/*
Audio playback and capture library. Choice of public domain or MIT-0. See license statements at the end of this file.
miniaudio - v0.11.22 - 2025-02-24

David Reid - mackron@gmail.com

Website:       https://miniaud.io
Documentation: https://miniaud.io/docs
GitHub:        https://github.com/mackron/miniaudio
*/
#include "miniaudio.h"

#ifndef miniaudio_c
#define miniaudio_c

#include <assert.h>
#include <limits.h>         /* For INT_MAX */
#include <math.h>           /* sin(), etc. */
#include <stdlib.h>         /* For malloc(), free(), wcstombs(). */
#include <string.h>         /* For memset() */

#include <stdarg.h>
#include <stdio.h>
#if !defined(_MSC_VER) && !defined(__DMC__)
    #include <strings.h>    /* For strcasecmp(). */
    #include <wchar.h>      /* For wcslen(), wcsrtombs() */
#endif
#ifdef _MSC_VER
    #include <float.h>      /* For _controlfp_s constants */
#endif

#if defined(MA_WIN32)
    #include <windows.h>

    /*
    There's a possibility that WIN32_LEAN_AND_MEAN has been defined which will exclude some symbols
    such as STGM_READ and CLSCTL_ALL. We need to check these and define them ourselves if they're
    unavailable.
    */
    #ifndef STGM_READ
    #define STGM_READ   0x00000000L
    #endif
    #ifndef CLSCTX_ALL
    #define CLSCTX_ALL  23
    #endif

    /* IUnknown is used by both the WASAPI and DirectSound backends. It easier to just declare our version here. */
    typedef struct ma_IUnknown  ma_IUnknown;
#endif

#if !defined(MA_WIN32)
#include <sched.h>
#include <sys/time.h>   /* select() (used for ma_sleep()). */
#include <pthread.h>
#endif

#ifdef MA_NX
#include <time.h>       /* For nanosleep() */
#endif

#include <sys/stat.h>   /* For fstat(), etc. */

#ifdef MA_EMSCRIPTEN
#include <emscripten/emscripten.h>
#endif


/* Architecture Detection */
#if !defined(MA_64BIT) && !defined(MA_32BIT)
#ifdef _WIN32
#ifdef _WIN64
#define MA_64BIT
#else
#define MA_32BIT
#endif
#endif
#endif

#if !defined(MA_64BIT) && !defined(MA_32BIT)
#ifdef __GNUC__
#ifdef __LP64__
#define MA_64BIT
#else
#define MA_32BIT
#endif
#endif
#endif

#if !defined(MA_64BIT) && !defined(MA_32BIT)
#include <stdint.h>
#if INTPTR_MAX == INT64_MAX
#define MA_64BIT
#else
#define MA_32BIT
#endif
#endif

#if defined(__arm__) || defined(_M_ARM)
#define MA_ARM32
#endif
#if defined(__arm64) || defined(__arm64__) || defined(__aarch64__) || defined(_M_ARM64)
#define MA_ARM64
#endif

#if defined(__x86_64__) || defined(_M_X64)
#define MA_X64
#elif defined(__i386) || defined(_M_IX86)
#define MA_X86
#elif defined(MA_ARM32) || defined(MA_ARM64)
#define MA_ARM
#endif

/* Intrinsics Support */
#if (defined(MA_X64) || defined(MA_X86)) && !defined(__COSMOPOLITAN__)
    #if defined(_MSC_VER) && !defined(__clang__)
        /* MSVC. */
        #if _MSC_VER >= 1400 && !defined(MA_NO_SSE2)   /* 2005 */
            #define MA_SUPPORT_SSE2
        #endif
        /*#if _MSC_VER >= 1600 && !defined(MA_NO_AVX)*/    /* 2010 */
        /*    #define MA_SUPPORT_AVX*/
        /*#endif*/
        #if _MSC_VER >= 1700 && !defined(MA_NO_AVX2)   /* 2012 */
            #define MA_SUPPORT_AVX2
        #endif
    #else
        /* Assume GNUC-style. */
        #if defined(__SSE2__) && !defined(MA_NO_SSE2)
            #define MA_SUPPORT_SSE2
        #endif
        /*#if defined(__AVX__) && !defined(MA_NO_AVX)*/
        /*    #define MA_SUPPORT_AVX*/
        /*#endif*/
        #if defined(__AVX2__) && !defined(MA_NO_AVX2)
            #define MA_SUPPORT_AVX2
        #endif
    #endif

    /* If at this point we still haven't determined compiler support for the intrinsics just fall back to __has_include. */
    #if !defined(__GNUC__) && !defined(__clang__) && defined(__has_include)
        #if !defined(MA_SUPPORT_SSE2)   && !defined(MA_NO_SSE2)   && __has_include(<emmintrin.h>)
            #define MA_SUPPORT_SSE2
        #endif
        /*#if !defined(MA_SUPPORT_AVX)    && !defined(MA_NO_AVX)    && __has_include(<immintrin.h>)*/
        /*    #define MA_SUPPORT_AVX*/
        /*#endif*/
        #if !defined(MA_SUPPORT_AVX2)   && !defined(MA_NO_AVX2)   && __has_include(<immintrin.h>)
            #define MA_SUPPORT_AVX2
        #endif
    #endif

    #if defined(MA_SUPPORT_AVX2) || defined(MA_SUPPORT_AVX)
        #include <immintrin.h>
    #elif defined(MA_SUPPORT_SSE2)
        #include <emmintrin.h>
    #endif
#endif

#if defined(MA_ARM)
    #if !defined(MA_NO_NEON) && (defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64))
        #define MA_SUPPORT_NEON
        #include <arm_neon.h>
    #endif
#endif

/* Begin globally disabled warnings. */
#if defined(_MSC_VER)
    #pragma warning(push)
    #pragma warning(disable:4752)   /* found Intel(R) Advanced Vector Extensions; consider using /arch:AVX */
    #pragma warning(disable:4049)   /* compiler limit : terminating line number emission */
#endif

#if defined(MA_X64) || defined(MA_X86)
    #if defined(_MSC_VER) && !defined(__clang__)
        #if _MSC_VER >= 1400
            #include <intrin.h>
            static MA_INLINE void ma_cpuid(int info[4], int fid)
            {
                __cpuid(info, fid);
            }
        #else
            #define MA_NO_CPUID
        #endif

        #if _MSC_VER >= 1600 && (defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 160040219)
            static MA_INLINE unsigned __int64 ma_xgetbv(int reg)
            {
                return _xgetbv(reg);
            }
        #else
            #define MA_NO_XGETBV
        #endif
    #elif (defined(__GNUC__) || defined(__clang__)) && !defined(MA_ANDROID)
        static MA_INLINE void ma_cpuid(int info[4], int fid)
        {
            /*
            It looks like the -fPIC option uses the ebx register which GCC complains about. We can work around this by just using a different register, the
            specific register of which I'm letting the compiler decide on. The "k" prefix is used to specify a 32-bit register. The {...} syntax is for
            supporting different assembly dialects.

            What's basically happening is that we're saving and restoring the ebx register manually.
            */
            #if defined(MA_X86) && defined(__PIC__)
                __asm__ __volatile__ (
                    "xchg{l} {%%}ebx, %k1;"
                    "cpuid;"
                    "xchg{l} {%%}ebx, %k1;"
                    : "=a"(info[0]), "=&r"(info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(fid), "c"(0)
                );
            #else
                __asm__ __volatile__ (
                    "cpuid" : "=a"(info[0]), "=b"(info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(fid), "c"(0)
                );
            #endif
        }

        static MA_INLINE ma_uint64 ma_xgetbv(int reg)
        {
            unsigned int hi;
            unsigned int lo;

            __asm__ __volatile__ (
                "xgetbv" : "=a"(lo), "=d"(hi) : "c"(reg)
            );

            return ((ma_uint64)hi << 32) | (ma_uint64)lo;
        }
    #else
        #define MA_NO_CPUID
        #define MA_NO_XGETBV
    #endif
#else
    #define MA_NO_CPUID
    #define MA_NO_XGETBV
#endif

static MA_INLINE ma_bool32 ma_has_sse2(void)
{
#if defined(MA_SUPPORT_SSE2)
    #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_SSE2)
        #if defined(MA_X64)
            return MA_TRUE;    /* 64-bit targets always support SSE2. */
        #elif (defined(_M_IX86_FP) && _M_IX86_FP == 2) || defined(__SSE2__)
            return MA_TRUE;    /* If the compiler is allowed to freely generate SSE2 code we can assume support. */
        #else
            #if defined(MA_NO_CPUID)
                return MA_FALSE;
            #else
                int info[4];
                ma_cpuid(info, 1);
                return (info[3] & (1 << 26)) != 0;
            #endif
        #endif
    #else
        return MA_FALSE;       /* SSE2 is only supported on x86 and x64 architectures. */
    #endif
#else
    return MA_FALSE;           /* No compiler support. */
#endif
}

#if 0
static MA_INLINE ma_bool32 ma_has_avx()
{
#if defined(MA_SUPPORT_AVX)
    #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_AVX)
        #if defined(_AVX_) || defined(__AVX__)
            return MA_TRUE;    /* If the compiler is allowed to freely generate AVX code we can assume support. */
        #else
            /* AVX requires both CPU and OS support. */
            #if defined(MA_NO_CPUID) || defined(MA_NO_XGETBV)
                return MA_FALSE;
            #else
                int info[4];
                ma_cpuid(info, 1);
                if (((info[2] & (1 << 27)) != 0) && ((info[2] & (1 << 28)) != 0)) {
                    ma_uint64 xrc = ma_xgetbv(0);
                    if ((xrc & 0x06) == 0x06) {
                        return MA_TRUE;
                    } else {
                        return MA_FALSE;
                    }
                } else {
                    return MA_FALSE;
                }
            #endif
        #endif
    #else
        return MA_FALSE;       /* AVX is only supported on x86 and x64 architectures. */
    #endif
#else
    return MA_FALSE;           /* No compiler support. */
#endif
}
#endif

static MA_INLINE ma_bool32 ma_has_avx2(void)
{
#if defined(MA_SUPPORT_AVX2)
    #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_NO_AVX2)
        #if defined(_AVX2_) || defined(__AVX2__)
            return MA_TRUE;    /* If the compiler is allowed to freely generate AVX2 code we can assume support. */
        #else
            /* AVX2 requires both CPU and OS support. */
            #if defined(MA_NO_CPUID) || defined(MA_NO_XGETBV)
                return MA_FALSE;
            #else
                int info1[4];
                int info7[4];
                ma_cpuid(info1, 1);
                ma_cpuid(info7, 7);
                if (((info1[2] & (1 << 27)) != 0) && ((info7[1] & (1 << 5)) != 0)) {
                    ma_uint64 xrc = ma_xgetbv(0);
                    if ((xrc & 0x06) == 0x06) {
                        return MA_TRUE;
                    } else {
                        return MA_FALSE;
                    }
                } else {
                    return MA_FALSE;
                }
            #endif
        #endif
    #else
        return MA_FALSE;       /* AVX2 is only supported on x86 and x64 architectures. */
    #endif
#else
    return MA_FALSE;           /* No compiler support. */
#endif
}

static MA_INLINE ma_bool32 ma_has_neon(void)
{
#if defined(MA_SUPPORT_NEON)
    #if defined(MA_ARM) && !defined(MA_NO_NEON)
        #if (defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64))
            return MA_TRUE;    /* If the compiler is allowed to freely generate NEON code we can assume support. */
        #else
            /* TODO: Runtime check. */
            return MA_FALSE;
        #endif
    #else
        return MA_FALSE;       /* NEON is only supported on ARM architectures. */
    #endif
#else
    return MA_FALSE;           /* No compiler support. */
#endif
}

#if defined(__has_builtin)
    #define MA_COMPILER_HAS_BUILTIN(x) __has_builtin(x)
#else
    #define MA_COMPILER_HAS_BUILTIN(x) 0
#endif

#ifndef MA_ASSUME
    #if MA_COMPILER_HAS_BUILTIN(__builtin_assume)
        #define MA_ASSUME(x) __builtin_assume(x)
    #elif MA_COMPILER_HAS_BUILTIN(__builtin_unreachable)
        #define MA_ASSUME(x) do { if (!(x)) __builtin_unreachable(); } while (0)
    #elif defined(_MSC_VER)
        #define MA_ASSUME(x) __assume(x)
    #else
        #define MA_ASSUME(x) (void)(x)
    #endif
#endif

#ifndef MA_RESTRICT
    #if defined(__clang__) || defined(__GNUC__) || defined(_MSC_VER)
        #define MA_RESTRICT __restrict
    #else
        #define MA_RESTRICT
    #endif
#endif

#if defined(_MSC_VER) && _MSC_VER >= 1400
    #define MA_HAS_BYTESWAP16_INTRINSIC
    #define MA_HAS_BYTESWAP32_INTRINSIC
    #define MA_HAS_BYTESWAP64_INTRINSIC
#elif defined(__clang__)
    #if MA_COMPILER_HAS_BUILTIN(__builtin_bswap16)
        #define MA_HAS_BYTESWAP16_INTRINSIC
    #endif
    #if MA_COMPILER_HAS_BUILTIN(__builtin_bswap32)
        #define MA_HAS_BYTESWAP32_INTRINSIC
    #endif
    #if MA_COMPILER_HAS_BUILTIN(__builtin_bswap64)
        #define MA_HAS_BYTESWAP64_INTRINSIC
    #endif
#elif defined(__GNUC__)
    #if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
        #define MA_HAS_BYTESWAP32_INTRINSIC
        #define MA_HAS_BYTESWAP64_INTRINSIC
    #endif
    #if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
        #define MA_HAS_BYTESWAP16_INTRINSIC
    #endif
#endif


static MA_INLINE ma_bool32 ma_is_little_endian(void)
{
#if defined(MA_X86) || defined(MA_X64)
    return MA_TRUE;
#else
    int n = 1;
    return (*(char*)&n) == 1;
#endif
}

static MA_INLINE ma_bool32 ma_is_big_endian(void)
{
    return !ma_is_little_endian();
}


static MA_INLINE ma_uint32 ma_swap_endian_uint32(ma_uint32 n)
{
#ifdef MA_HAS_BYTESWAP32_INTRINSIC
    #if defined(_MSC_VER)
        return _byteswap_ulong(n);
    #elif defined(__GNUC__) || defined(__clang__)
        #if defined(MA_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 6) && !defined(MA_64BIT)   /* <-- 64-bit inline assembly has not been tested, so disabling for now. */
            /* Inline assembly optimized implementation for ARM. In my testing, GCC does not generate optimized code with __builtin_bswap32(). */
            ma_uint32 r;
            __asm__ __volatile__ (
            #if defined(MA_64BIT)
                "rev %w[out], %w[in]" : [out]"=r"(r) : [in]"r"(n)   /* <-- This is untested. If someone in the community could test this, that would be appreciated! */
            #else
                "rev %[out], %[in]" : [out]"=r"(r) : [in]"r"(n)
            #endif
            );
            return r;
        #else
            return __builtin_bswap32(n);
        #endif
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & 0xFF000000) >> 24) |
           ((n & 0x00FF0000) >>  8) |
           ((n & 0x0000FF00) <<  8) |
           ((n & 0x000000FF) << 24);
#endif
}


#if !defined(MA_EMSCRIPTEN)
#ifdef MA_WIN32
static void ma_sleep__win32(ma_uint32 milliseconds)
{
    Sleep((DWORD)milliseconds);
}
#endif
#ifdef MA_POSIX
static void ma_sleep__posix(ma_uint32 milliseconds)
{
#ifdef MA_EMSCRIPTEN
    (void)milliseconds;
    MA_ASSERT(MA_FALSE);  /* The Emscripten build should never sleep. */
#else
    #if (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309L) || defined(MA_NX)
        struct timespec ts;
        ts.tv_sec  = milliseconds / 1000;
        ts.tv_nsec = milliseconds % 1000 * 1000000;
        nanosleep(&ts, NULL);
    #else
        struct timeval tv;
        tv.tv_sec  = milliseconds / 1000;
        tv.tv_usec = milliseconds % 1000 * 1000;
        select(0, NULL, NULL, NULL, &tv);
    #endif
#endif
}
#endif

static MA_INLINE void ma_sleep(ma_uint32 milliseconds)
{
#ifdef MA_WIN32
    ma_sleep__win32(milliseconds);
#endif
#ifdef MA_POSIX
    ma_sleep__posix(milliseconds);
#endif
}
#endif

static MA_INLINE void ma_yield(void)
{
#if defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64)
    /* x86/x64 */
    #if (defined(_MSC_VER) || defined(__WATCOMC__) || defined(__DMC__)) && !defined(__clang__)
        #if _MSC_VER >= 1400
            _mm_pause();
        #else
            #if defined(__DMC__)
                /* Digital Mars does not recognize the PAUSE opcode. Fall back to NOP. */
                __asm nop;
            #else
                __asm pause;
            #endif
        #endif
    #else
        __asm__ __volatile__ ("pause");
    #endif
#elif (defined(__arm__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7) || defined(_M_ARM64) || (defined(_M_ARM) && _M_ARM >= 7) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__)
    /* ARM */
    #if defined(_MSC_VER)
        /* Apparently there is a __yield() intrinsic that's compatible with ARM, but I cannot find documentation for it nor can I find where it's declared. */
        __yield();
    #else
        __asm__ __volatile__ ("yield"); /* ARMv6K/ARMv6T2 and above. */
    #endif
#else
    /* Unknown or unsupported architecture. No-op. */
#endif
}


#define MA_MM_DENORMALS_ZERO_MASK   0x0040
#define MA_MM_FLUSH_ZERO_MASK       0x8000

static MA_INLINE unsigned int ma_disable_denormals(void)
{
    unsigned int prevState;

    #if defined(_MSC_VER)
    {
        /*
        Older versions of Visual Studio don't support the "safe" versions of _controlfp_s(). I don't
        know which version of Visual Studio first added support for _controlfp_s(), but I do know
        that VC6 lacks support. _MSC_VER = 1200 is VC6, but if you get compilation errors on older
        versions of Visual Studio, let me know and I'll make the necessary adjustment.
        */
        #if _MSC_VER <= 1200
        {
            prevState = _statusfp();
            _controlfp(prevState | _DN_FLUSH, _MCW_DN);
        }
        #else
        {
            unsigned int unused;
            _controlfp_s(&prevState, 0, 0);
            _controlfp_s(&unused, prevState | _DN_FLUSH, _MCW_DN);
        }
        #endif
    }
    #elif defined(MA_X86) || defined(MA_X64)
    {
        #if defined(__SSE2__) && !(defined(__TINYC__) || defined(__WATCOMC__) || defined(__COSMOPOLITAN__)) /* <-- Add compilers that lack support for _mm_getcsr() and _mm_setcsr() to this list. */
        {
            prevState = _mm_getcsr();
            _mm_setcsr(prevState | MA_MM_DENORMALS_ZERO_MASK | MA_MM_FLUSH_ZERO_MASK);
        }
        #else
        {
            /* x88/64, but no support for _mm_getcsr()/_mm_setcsr(). May need to fall back to inlined assembly here. */
            prevState = 0;
        }
        #endif
    }
    #else
    {
        /* Unknown or unsupported architecture. No-op. */
        prevState = 0;
    }
    #endif

    return prevState;
}

static MA_INLINE void ma_restore_denormals(unsigned int prevState)
{
    #if defined(_MSC_VER)
    {
        /* Older versions of Visual Studio do not support _controlfp_s(). See ma_disable_denormals(). */
        #if _MSC_VER <= 1200
        {
            _controlfp(prevState, _MCW_DN);
        }
        #else
        {
            unsigned int unused;
            _controlfp_s(&unused, prevState, _MCW_DN);
        }
        #endif
    }
    #elif defined(MA_X86) || defined(MA_X64)
    {
        #if defined(__SSE2__) && !(defined(__TINYC__) || defined(__WATCOMC__) || defined(__COSMOPOLITAN__))   /* <-- Add compilers that lack support for _mm_getcsr() and _mm_setcsr() to this list. */
        {
            _mm_setcsr(prevState);
        }
        #else
        {
            /* x88/64, but no support for _mm_getcsr()/_mm_setcsr(). May need to fall back to inlined assembly here. */
            (void)prevState;
        }
        #endif
    }
    #else
    {
        /* Unknown or unsupported architecture. No-op. */
        (void)prevState;
    }
    #endif
}


#ifdef MA_ANDROID
#include <sys/system_properties.h>

int ma_android_sdk_version()
{
    char sdkVersion[PROP_VALUE_MAX + 1] = {0, };
    if (__system_property_get("ro.build.version.sdk", sdkVersion)) {
        return atoi(sdkVersion);
    }

    return 0;
}
#endif


#ifndef MA_COINIT_VALUE
#define MA_COINIT_VALUE    0   /* 0 = COINIT_MULTITHREADED */
#endif


#ifndef MA_FLT_MAX
    #ifdef FLT_MAX
        #define MA_FLT_MAX FLT_MAX
    #else
        #define MA_FLT_MAX 3.402823466e+38F
    #endif
#endif


#ifndef MA_PI
#define MA_PI      3.14159265358979323846264f
#endif
#ifndef MA_PI_D
#define MA_PI_D    3.14159265358979323846264
#endif
#ifndef MA_TAU
#define MA_TAU     6.28318530717958647693f
#endif
#ifndef MA_TAU_D
#define MA_TAU_D   6.28318530717958647693
#endif


/* The default format when ma_format_unknown (0) is requested when initializing a device. */
#ifndef MA_DEFAULT_FORMAT
#define MA_DEFAULT_FORMAT                                   ma_format_f32
#endif

/* The default channel count to use when 0 is used when initializing a device. */
#ifndef MA_DEFAULT_CHANNELS
#define MA_DEFAULT_CHANNELS                                 2
#endif

/* The default sample rate to use when 0 is used when initializing a device. */
#ifndef MA_DEFAULT_SAMPLE_RATE
#define MA_DEFAULT_SAMPLE_RATE                              48000
#endif

/* Default periods when none is specified in ma_device_init(). More periods means more work on the CPU. */
#ifndef MA_DEFAULT_PERIODS
#define MA_DEFAULT_PERIODS                                  3
#endif

/* The default period size in milliseconds for low latency mode. */
#ifndef MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY
#define MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY  10
#endif

/* The default buffer size in milliseconds for conservative mode. */
#ifndef MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE
#define MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE 100
#endif

/* The default LPF filter order for linear resampling. Note that this is clamped to MA_MAX_FILTER_ORDER. */
#ifndef MA_DEFAULT_RESAMPLER_LPF_ORDER
    #if MA_MAX_FILTER_ORDER >= 4
        #define MA_DEFAULT_RESAMPLER_LPF_ORDER  4
    #else
        #define MA_DEFAULT_RESAMPLER_LPF_ORDER  MA_MAX_FILTER_ORDER
    #endif
#endif


#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wunused-variable"
#endif

/* Standard sample rates, in order of priority. */
static ma_uint32 g_maStandardSampleRatePriorities[] = {
    (ma_uint32)ma_standard_sample_rate_48000,
    (ma_uint32)ma_standard_sample_rate_44100,

    (ma_uint32)ma_standard_sample_rate_32000,
    (ma_uint32)ma_standard_sample_rate_24000,
    (ma_uint32)ma_standard_sample_rate_22050,

    (ma_uint32)ma_standard_sample_rate_88200,
    (ma_uint32)ma_standard_sample_rate_96000,
    (ma_uint32)ma_standard_sample_rate_176400,
    (ma_uint32)ma_standard_sample_rate_192000,

    (ma_uint32)ma_standard_sample_rate_16000,
    (ma_uint32)ma_standard_sample_rate_11025,
    (ma_uint32)ma_standard_sample_rate_8000,

    (ma_uint32)ma_standard_sample_rate_352800,
    (ma_uint32)ma_standard_sample_rate_384000
};

static MA_INLINE ma_bool32 ma_is_standard_sample_rate(ma_uint32 sampleRate)
{
    ma_uint32 iSampleRate;

    for (iSampleRate = 0; iSampleRate < sizeof(g_maStandardSampleRatePriorities) / sizeof(g_maStandardSampleRatePriorities[0]); iSampleRate += 1) {
        if (g_maStandardSampleRatePriorities[iSampleRate] == sampleRate) {
            return MA_TRUE;
        }
    }

    /* Getting here means the sample rate is not supported. */
    return MA_FALSE;
}


static ma_format g_maFormatPriorities[] = {
    ma_format_s16,         /* Most common */
    ma_format_f32,

    /*ma_format_s24_32,*/    /* Clean alignment */
    ma_format_s32,

    ma_format_s24,         /* Unclean alignment */

    ma_format_u8           /* Low quality */
};
#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic pop
#endif


MA_API void ma_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision)
{
    if (pMajor) {
        *pMajor = MA_VERSION_MAJOR;
    }

    if (pMinor) {
        *pMinor = MA_VERSION_MINOR;
    }

    if (pRevision) {
        *pRevision = MA_VERSION_REVISION;
    }
}

MA_API const char* ma_version_string(void)
{
    return MA_VERSION_STRING;
}


/******************************************************************************

Standard Library Stuff

******************************************************************************/
#ifndef MA_ASSERT
#define MA_ASSERT(condition)            assert(condition)
#endif

#ifndef MA_MALLOC
#define MA_MALLOC(sz)                   malloc((sz))
#endif
#ifndef MA_REALLOC
#define MA_REALLOC(p, sz)               realloc((p), (sz))
#endif
#ifndef MA_FREE
#define MA_FREE(p)                      free((p))
#endif

static MA_INLINE void ma_zero_memory_default(void* p, size_t sz)
{
    if (p == NULL) {
        MA_ASSERT(sz == 0); /* If this is triggered there's an error with the calling code. */
        return;
    }

    if (sz > 0) {
        memset(p, 0, sz);
    }
}


#ifndef MA_ZERO_MEMORY
#define MA_ZERO_MEMORY(p, sz)           ma_zero_memory_default((p), (sz))
#endif
#ifndef MA_COPY_MEMORY
#define MA_COPY_MEMORY(dst, src, sz)    memcpy((dst), (src), (sz))
#endif
#ifndef MA_MOVE_MEMORY
#define MA_MOVE_MEMORY(dst, src, sz)    memmove((dst), (src), (sz))
#endif

#define MA_ZERO_OBJECT(p)               MA_ZERO_MEMORY((p), sizeof(*(p)))

#define ma_countof(x)                   (sizeof(x) / sizeof(x[0]))
#define ma_max(x, y)                    (((x) > (y)) ? (x) : (y))
#define ma_min(x, y)                    (((x) < (y)) ? (x) : (y))
#define ma_abs(x)                       (((x) > 0) ? (x) : -(x))
#define ma_clamp(x, lo, hi)             (ma_max(lo, ma_min(x, hi)))
#define ma_offset_ptr(p, offset)        (((ma_uint8*)(p)) + (offset))
#define ma_align(x, a)                  (((x) + ((a)-1)) & ~((a)-1))
#define ma_align_64(x)                  ma_align(x, 8)

#define ma_buffer_frame_capacity(buffer, channels, format) (sizeof(buffer) / ma_get_bytes_per_sample(format) / (channels))

static MA_INLINE double ma_sind(double x)
{
    /* TODO: Implement custom sin(x). */
    return sin(x);
}

static MA_INLINE double ma_expd(double x)
{
    /* TODO: Implement custom exp(x). */
    return exp(x);
}

static MA_INLINE double ma_logd(double x)
{
    /* TODO: Implement custom log(x). */
    return log(x);
}

static MA_INLINE double ma_powd(double x, double y)
{
    /* TODO: Implement custom pow(x, y). */
    return pow(x, y);
}

static MA_INLINE double ma_sqrtd(double x)
{
    /* TODO: Implement custom sqrt(x). */
    return sqrt(x);
}


static MA_INLINE float ma_rsqrtf(float x)
{
    #if defined(MA_SUPPORT_SSE2) && !defined(MA_NO_SSE2) && (defined(MA_X64) || (defined(_M_IX86_FP) && _M_IX86_FP == 2) || defined(__SSE2__))
    {
        /*
        For SSE we can use RSQRTSS.

        This Stack Overflow post suggests that compilers don't necessarily generate optimal code
        when using intrinsics:

            https://web.archive.org/web/20221211012522/https://stackoverflow.com/questions/32687079/getting-fewest-instructions-for-rsqrtss-wrapper

        I'm going to do something similar here, but a bit simpler.
        */
        #if defined(__GNUC__) || defined(__clang__)
        {
            float result;
            __asm__ __volatile__("rsqrtss %1, %0" : "=x"(result) : "x"(x));
            return result;
        }
        #else
        {
            return _mm_cvtss_f32(_mm_rsqrt_ss(_mm_set_ps1(x)));
        }
        #endif
    }
    #else
    {
        return 1 / (float)ma_sqrtd(x);
    }
    #endif
}


static MA_INLINE float ma_sinf(float x)
{
    return (float)ma_sind((float)x);
}

static MA_INLINE double ma_cosd(double x)
{
    return ma_sind((MA_PI_D*0.5) - x);
}

static MA_INLINE float ma_cosf(float x)
{
    return (float)ma_cosd((float)x);
}

static MA_INLINE double ma_log10d(double x)
{
    return ma_logd(x) * 0.43429448190325182765;
}

static MA_INLINE float ma_powf(float x, float y)
{
    return (float)ma_powd((double)x, (double)y);
}

static MA_INLINE float ma_log10f(float x)
{
    return (float)ma_log10d((double)x);
}


static MA_INLINE double ma_degrees_to_radians(double degrees)
{
    return degrees * 0.01745329252;
}

static MA_INLINE double ma_radians_to_degrees(double radians)
{
    return radians * 57.295779512896;
}

static MA_INLINE float ma_degrees_to_radians_f(float degrees)
{
    return degrees * 0.01745329252f;
}

static MA_INLINE float ma_radians_to_degrees_f(float radians)
{
    return radians * 57.295779512896f;
}


/*
Return Values:
  0:  Success
  22: EINVAL
  34: ERANGE

Not using symbolic constants for errors because I want to avoid #including errno.h

These are marked as no-inline because of some bad code generation by Clang. None of these functions
are used in any performance-critical code within miniaudio.
*/
MA_API MA_NO_INLINE int ma_strcpy_s(char* dst, size_t dstSizeInBytes, const char* src)
{
    size_t i;

    if (dst == 0) {
        return 22;
    }
    if (dstSizeInBytes == 0) {
        return 34;
    }
    if (src == 0) {
        dst[0] = '\0';
        return 22;
    }

    for (i = 0; i < dstSizeInBytes && src[i] != '\0'; ++i) {
        dst[i] = src[i];
    }

    if (i < dstSizeInBytes) {
        dst[i] = '\0';
        return 0;
    }

    dst[0] = '\0';
    return 34;
}

MA_API MA_NO_INLINE int ma_wcscpy_s(wchar_t* dst, size_t dstCap, const wchar_t* src)
{
    size_t i;

    if (dst == 0) {
        return 22;
    }
    if (dstCap == 0) {
        return 34;
    }
    if (src == 0) {
        dst[0] = '\0';
        return 22;
    }

    for (i = 0; i < dstCap && src[i] != '\0'; ++i) {
        dst[i] = src[i];
    }

    if (i < dstCap) {
        dst[i] = '\0';
        return 0;
    }

    dst[0] = '\0';
    return 34;
}


MA_API MA_NO_INLINE int ma_strncpy_s(char* dst, size_t dstSizeInBytes, const char* src, size_t count)
{
    size_t maxcount;
    size_t i;

    if (dst == 0) {
        return 22;
    }
    if (dstSizeInBytes == 0) {
        return 34;
    }
    if (src == 0) {
        dst[0] = '\0';
        return 22;
    }

    maxcount = count;
    if (count == ((size_t)-1) || count >= dstSizeInBytes) {        /* -1 = _TRUNCATE */
        maxcount = dstSizeInBytes - 1;
    }

    for (i = 0; i < maxcount && src[i] != '\0'; ++i) {
        dst[i] = src[i];
    }

    if (src[i] == '\0' || i == count || count == ((size_t)-1)) {
        dst[i] = '\0';
        return 0;
    }

    dst[0] = '\0';
    return 34;
}

MA_API MA_NO_INLINE int ma_strcat_s(char* dst, size_t dstSizeInBytes, const char* src)
{
    char* dstorig;

    if (dst == 0) {
        return 22;
    }
    if (dstSizeInBytes == 0) {
        return 34;
    }
    if (src == 0) {
        dst[0] = '\0';
        return 22;
    }

    dstorig = dst;

    while (dstSizeInBytes > 0 && dst[0] != '\0') {
        dst += 1;
        dstSizeInBytes -= 1;
    }

    if (dstSizeInBytes == 0) {
        return 22;  /* Unterminated. */
    }


    while (dstSizeInBytes > 0 && src[0] != '\0') {
        *dst++ = *src++;
        dstSizeInBytes -= 1;
    }

    if (dstSizeInBytes > 0) {
        dst[0] = '\0';
    } else {
        dstorig[0] = '\0';
        return 34;
    }

    return 0;
}

MA_API MA_NO_INLINE int ma_strncat_s(char* dst, size_t dstSizeInBytes, const char* src, size_t count)
{
    char* dstorig;

    if (dst == 0) {
        return 22;
    }
    if (dstSizeInBytes == 0) {
        return 34;
    }
    if (src == 0) {
        return 22;
    }

    dstorig = dst;

    while (dstSizeInBytes > 0 && dst[0] != '\0') {
        dst += 1;
        dstSizeInBytes -= 1;
    }

    if (dstSizeInBytes == 0) {
        return 22;  /* Unterminated. */
    }


    if (count == ((size_t)-1)) {        /* _TRUNCATE */
        count = dstSizeInBytes - 1;
    }

    while (dstSizeInBytes > 0 && src[0] != '\0' && count > 0) {
        *dst++ = *src++;
        dstSizeInBytes -= 1;
        count -= 1;
    }

    if (dstSizeInBytes > 0) {
        dst[0] = '\0';
    } else {
        dstorig[0] = '\0';
        return 34;
    }

    return 0;
}

MA_API MA_NO_INLINE int ma_itoa_s(int value, char* dst, size_t dstSizeInBytes, int radix)
{
    int sign;
    unsigned int valueU;
    char* dstEnd;

    if (dst == NULL || dstSizeInBytes == 0) {
        return 22;
    }
    if (radix < 2 || radix > 36) {
        dst[0] = '\0';
        return 22;
    }

    sign = (value < 0 && radix == 10) ? -1 : 1;     /* The negative sign is only used when the base is 10. */

    if (value < 0) {
        valueU = -value;
    } else {
        valueU = value;
    }

    dstEnd = dst;
    do
    {
        int remainder = valueU % radix;
        if (remainder > 9) {
            *dstEnd = (char)((remainder - 10) + 'a');
        } else {
            *dstEnd = (char)(remainder + '0');
        }

        dstEnd += 1;
        dstSizeInBytes -= 1;
        valueU /= radix;
    } while (dstSizeInBytes > 0 && valueU > 0);

    if (dstSizeInBytes == 0) {
        dst[0] = '\0';
        return 22;  /* Ran out of room in the output buffer. */
    }

    if (sign < 0) {
        *dstEnd++ = '-';
        dstSizeInBytes -= 1;
    }

    if (dstSizeInBytes == 0) {
        dst[0] = '\0';
        return 22;  /* Ran out of room in the output buffer. */
    }

    *dstEnd = '\0';


    /* At this point the string will be reversed. */
    dstEnd -= 1;
    while (dst < dstEnd) {
        char temp = *dst;
        *dst = *dstEnd;
        *dstEnd = temp;

        dst += 1;
        dstEnd -= 1;
    }

    return 0;
}

MA_API MA_NO_INLINE int ma_strcmp(const char* str1, const char* str2)
{
    if (str1 == str2) return  0;

    /* These checks differ from the standard implementation. It's not important, but I prefer it just for sanity. */
    if (str1 == NULL) return -1;
    if (str2 == NULL) return  1;

    for (;;) {
        if (str1[0] == '\0') {
            break;
        }
        if (str1[0] != str2[0]) {
            break;
        }

        str1 += 1;
        str2 += 1;
    }

    return ((unsigned char*)str1)[0] - ((unsigned char*)str2)[0];
}

MA_API MA_NO_INLINE int ma_strappend(char* dst, size_t dstSize, const char* srcA, const char* srcB)
{
    int result;

    result = ma_strncpy_s(dst, dstSize, srcA, (size_t)-1);
    if (result != 0) {
        return result;
    }

    result = ma_strncat_s(dst, dstSize, srcB, (size_t)-1);
    if (result != 0) {
        return result;
    }

    return result;
}

MA_API MA_NO_INLINE char* ma_copy_string(const char* src, const ma_allocation_callbacks* pAllocationCallbacks)
{
    size_t sz;
    char* dst;

    if (src == NULL) {
        return NULL;
    }

    sz = strlen(src)+1;
    dst = (char*)ma_malloc(sz, pAllocationCallbacks);
    if (dst == NULL) {
        return NULL;
    }

    ma_strcpy_s(dst, sz, src);

    return dst;
}

MA_API MA_NO_INLINE wchar_t* ma_copy_string_w(const wchar_t* src, const ma_allocation_callbacks* pAllocationCallbacks)
{
    size_t sz = wcslen(src)+1;
    wchar_t* dst = (wchar_t*)ma_malloc(sz * sizeof(*dst), pAllocationCallbacks);
    if (dst == NULL) {
        return NULL;
    }

    ma_wcscpy_s(dst, sz, src);

    return dst;
}



#include <errno.h>
static ma_result ma_result_from_errno(int e)
{
    if (e == 0) {
        return MA_SUCCESS;
    }
#ifdef EPERM
    else if (e == EPERM) { return MA_INVALID_OPERATION; }
#endif
#ifdef ENOENT
    else if (e == ENOENT) { return MA_DOES_NOT_EXIST; }
#endif
#ifdef ESRCH
    else if (e == ESRCH) { return MA_DOES_NOT_EXIST; }
#endif
#ifdef EINTR
    else if (e == EINTR) { return MA_INTERRUPT; }
#endif
#ifdef EIO
    else if (e == EIO) { return MA_IO_ERROR; }
#endif
#ifdef ENXIO
    else if (e == ENXIO) { return MA_DOES_NOT_EXIST; }
#endif
#ifdef E2BIG
    else if (e == E2BIG) { return MA_INVALID_ARGS; }
#endif
#ifdef ENOEXEC
    else if (e == ENOEXEC) { return MA_INVALID_FILE; }
#endif
#ifdef EBADF
    else if (e == EBADF) { return MA_INVALID_FILE; }
#endif
#ifdef ECHILD
    else if (e == ECHILD) { return MA_ERROR; }
#endif
#ifdef EAGAIN
    else if (e == EAGAIN) { return MA_UNAVAILABLE; }
#endif
#ifdef ENOMEM
    else if (e == ENOMEM) { return MA_OUT_OF_MEMORY; }
#endif
#ifdef EACCES
    else if (e == EACCES) { return MA_ACCESS_DENIED; }
#endif
#ifdef EFAULT
    else if (e == EFAULT) { return MA_BAD_ADDRESS; }
#endif
#ifdef ENOTBLK
    else if (e == ENOTBLK) { return MA_ERROR; }
#endif
#ifdef EBUSY
    else if (e == EBUSY) { return MA_BUSY; }
#endif
#ifdef EEXIST
    else if (e == EEXIST) { return MA_ALREADY_EXISTS; }
#endif
#ifdef EXDEV
    else if (e == EXDEV) { return MA_ERROR; }
#endif
#ifdef ENODEV
    else if (e == ENODEV) { return MA_DOES_NOT_EXIST; }
#endif
#ifdef ENOTDIR
    else if (e == ENOTDIR) { return MA_NOT_DIRECTORY; }
#endif
#ifdef EISDIR
    else if (e == EISDIR) { return MA_IS_DIRECTORY; }
#endif
#ifdef EINVAL
    else if (e == EINVAL) { return MA_INVALID_ARGS; }
#endif
#ifdef ENFILE
    else if (e == ENFILE) { return MA_TOO_MANY_OPEN_FILES; }
#endif
#ifdef EMFILE
    else if (e == EMFILE) { return MA_TOO_MANY_OPEN_FILES; }
#endif
#ifdef ENOTTY
    else if (e == ENOTTY) { return MA_INVALID_OPERATION; }
#endif
#ifdef ETXTBSY
    else if (e == ETXTBSY) { return MA_BUSY; }
#endif
#ifdef EFBIG
    else if (e == EFBIG) { return MA_TOO_BIG; }
#endif
#ifdef ENOSPC
    else if (e == ENOSPC) { return MA_NO_SPACE; }
#endif
#ifdef ESPIPE
    else if (e == ESPIPE) { return MA_BAD_SEEK; }
#endif
#ifdef EROFS
    else if (e == EROFS) { return MA_ACCESS_DENIED; }
#endif
#ifdef EMLINK
    else if (e == EMLINK) { return MA_TOO_MANY_LINKS; }
#endif
#ifdef EPIPE
    else if (e == EPIPE) { return MA_BAD_PIPE; }
#endif
#ifdef EDOM
    else if (e == EDOM) { return MA_OUT_OF_RANGE; }
#endif
#ifdef ERANGE
    else if (e == ERANGE) { return MA_OUT_OF_RANGE; }
#endif
#ifdef EDEADLK
    else if (e == EDEADLK) { return MA_DEADLOCK; }
#endif
#ifdef ENAMETOOLONG
    else if (e == ENAMETOOLONG) { return MA_PATH_TOO_LONG; }
#endif
#ifdef ENOLCK
    else if (e == ENOLCK) { return MA_ERROR; }
#endif
#ifdef ENOSYS
    else if (e == ENOSYS) { return MA_NOT_IMPLEMENTED; }
#endif
#ifdef ENOTEMPTY
    else if (e == ENOTEMPTY) { return MA_DIRECTORY_NOT_EMPTY; }
#endif
#ifdef ELOOP
    else if (e == ELOOP) { return MA_TOO_MANY_LINKS; }
#endif
#ifdef ENOMSG
    else if (e == ENOMSG) { return MA_NO_MESSAGE; }
#endif
#ifdef EIDRM
    else if (e == EIDRM) { return MA_ERROR; }
#endif
#ifdef ECHRNG
    else if (e == ECHRNG) { return MA_ERROR; }
#endif
#ifdef EL2NSYNC
    else if (e == EL2NSYNC) { return MA_ERROR; }
#endif
#ifdef EL3HLT
    else if (e == EL3HLT) { return MA_ERROR; }
#endif
#ifdef EL3RST
    else if (e == EL3RST) { return MA_ERROR; }
#endif
#ifdef ELNRNG
    else if (e == ELNRNG) { return MA_OUT_OF_RANGE; }
#endif
#ifdef EUNATCH
    else if (e == EUNATCH) { return MA_ERROR; }
#endif
#ifdef ENOCSI
    else if (e == ENOCSI) { return MA_ERROR; }
#endif
#ifdef EL2HLT
    else if (e == EL2HLT) { return MA_ERROR; }
#endif
#ifdef EBADE
    else if (e == EBADE) { return MA_ERROR; }
#endif
#ifdef EBADR
    else if (e == EBADR) { return MA_ERROR; }
#endif
#ifdef EXFULL
    else if (e == EXFULL) { return MA_ERROR; }
#endif
#ifdef ENOANO
    else if (e == ENOANO) { return MA_ERROR; }
#endif
#ifdef EBADRQC
    else if (e == EBADRQC) { return MA_ERROR; }
#endif
#ifdef EBADSLT
    else if (e == EBADSLT) { return MA_ERROR; }
#endif
#ifdef EBFONT
    else if (e == EBFONT) { return MA_INVALID_FILE; }
#endif
#ifdef ENOSTR
    else if (e == ENOSTR) { return MA_ERROR; }
#endif
#ifdef ENODATA
    else if (e == ENODATA) { return MA_NO_DATA_AVAILABLE; }
#endif
#ifdef ETIME
    else if (e == ETIME) { return MA_TIMEOUT; }
#endif
#ifdef ENOSR
    else if (e == ENOSR) { return MA_NO_DATA_AVAILABLE; }
#endif
#ifdef ENONET
    else if (e == ENONET) { return MA_NO_NETWORK; }
#endif
#ifdef ENOPKG
    else if (e == ENOPKG) { return MA_ERROR; }
#endif
#ifdef EREMOTE
    else if (e == EREMOTE) { return MA_ERROR; }
#endif
#ifdef ENOLINK
    else if (e == ENOLINK) { return MA_ERROR; }
#endif
#ifdef EADV
    else if (e == EADV) { return MA_ERROR; }
#endif
#ifdef ESRMNT
    else if (e == ESRMNT) { return MA_ERROR; }
#endif
#ifdef ECOMM
    else if (e == ECOMM) { return MA_ERROR; }
#endif
#ifdef EPROTO
    else if (e == EPROTO) { return MA_ERROR; }
#endif
#ifdef EMULTIHOP
    else if (e == EMULTIHOP) { return MA_ERROR; }
#endif
#ifdef EDOTDOT
    else if (e == EDOTDOT) { return MA_ERROR; }
#endif
#ifdef EBADMSG
    else if (e == EBADMSG) { return MA_BAD_MESSAGE; }
#endif
#ifdef EOVERFLOW
    else if (e == EOVERFLOW) { return MA_TOO_BIG; }
#endif
#ifdef ENOTUNIQ
    else if (e == ENOTUNIQ) { return MA_NOT_UNIQUE; }
#endif
#ifdef EBADFD
    else if (e == EBADFD) { return MA_ERROR; }
#endif
#ifdef EREMCHG
    else if (e == EREMCHG) { return MA_ERROR; }
#endif
#ifdef ELIBACC
    else if (e == ELIBACC) { return MA_ACCESS_DENIED; }
#endif
#ifdef ELIBBAD
    else if (e == ELIBBAD) { return MA_INVALID_FILE; }
#endif
#ifdef ELIBSCN
    else if (e == ELIBSCN) { return MA_INVALID_FILE; }
#endif
#ifdef ELIBMAX
    else if (e == ELIBMAX) { return MA_ERROR; }
#endif
#ifdef ELIBEXEC
    else if (e == ELIBEXEC) { return MA_ERROR; }
#endif
#ifdef EILSEQ
    else if (e == EILSEQ) { return MA_INVALID_DATA; }
#endif
#ifdef ERESTART
    else if (e == ERESTART) { return MA_ERROR; }
#endif
#ifdef ESTRPIPE
    else if (e == ESTRPIPE) { return MA_ERROR; }
#endif
#ifdef EUSERS
    else if (e == EUSERS) { return MA_ERROR; }
#endif
#ifdef ENOTSOCK
    else if (e == ENOTSOCK) { return MA_NOT_SOCKET; }
#endif
#ifdef EDESTADDRREQ
    else if (e == EDESTADDRREQ) { return MA_NO_ADDRESS; }
#endif
#ifdef EMSGSIZE
    else if (e == EMSGSIZE) { return MA_TOO_BIG; }
#endif
#ifdef EPROTOTYPE
    else if (e == EPROTOTYPE) { return MA_BAD_PROTOCOL; }
#endif
#ifdef ENOPROTOOPT
    else if (e == ENOPROTOOPT) { return MA_PROTOCOL_UNAVAILABLE; }
#endif
#ifdef EPROTONOSUPPORT
    else if (e == EPROTONOSUPPORT) { return MA_PROTOCOL_NOT_SUPPORTED; }
#endif
#ifdef ESOCKTNOSUPPORT
    else if (e == ESOCKTNOSUPPORT) { return MA_SOCKET_NOT_SUPPORTED; }
#endif
#ifdef EOPNOTSUPP
    else if (e == EOPNOTSUPP) { return MA_INVALID_OPERATION; }
#endif
#ifdef EPFNOSUPPORT
    else if (e == EPFNOSUPPORT) { return MA_PROTOCOL_FAMILY_NOT_SUPPORTED; }
#endif
#ifdef EAFNOSUPPORT
    else if (e == EAFNOSUPPORT) { return MA_ADDRESS_FAMILY_NOT_SUPPORTED; }
#endif
#ifdef EADDRINUSE
    else if (e == EADDRINUSE) { return MA_ALREADY_IN_USE; }
#endif
#ifdef EADDRNOTAVAIL
    else if (e == EADDRNOTAVAIL) { return MA_ERROR; }
#endif
#ifdef ENETDOWN
    else if (e == ENETDOWN) { return MA_NO_NETWORK; }
#endif
#ifdef ENETUNREACH
    else if (e == ENETUNREACH) { return MA_NO_NETWORK; }
#endif
#ifdef ENETRESET
    else if (e == ENETRESET) { return MA_NO_NETWORK; }
#endif
#ifdef ECONNABORTED
    else if (e == ECONNABORTED) { return MA_NO_NETWORK; }
#endif
#ifdef ECONNRESET
    else if (e == ECONNRESET) { return MA_CONNECTION_RESET; }
#endif
#ifdef ENOBUFS
    else if (e == ENOBUFS) { return MA_NO_SPACE; }
#endif
#ifdef EISCONN
    else if (e == EISCONN) { return MA_ALREADY_CONNECTED; }
#endif
#ifdef ENOTCONN
    else if (e == ENOTCONN) { return MA_NOT_CONNECTED; }
#endif
#ifdef ESHUTDOWN
    else if (e == ESHUTDOWN) { return MA_ERROR; }
#endif
#ifdef ETOOMANYREFS
    else if (e == ETOOMANYREFS) { return MA_ERROR; }
#endif
#ifdef ETIMEDOUT
    else if (e == ETIMEDOUT) { return MA_TIMEOUT; }
#endif
#ifdef ECONNREFUSED
    else if (e == ECONNREFUSED) { return MA_CONNECTION_REFUSED; }
#endif
#ifdef EHOSTDOWN
    else if (e == EHOSTDOWN) { return MA_NO_HOST; }
#endif
#ifdef EHOSTUNREACH
    else if (e == EHOSTUNREACH) { return MA_NO_HOST; }
#endif
#ifdef EALREADY
    else if (e == EALREADY) { return MA_IN_PROGRESS; }
#endif
#ifdef EINPROGRESS
    else if (e == EINPROGRESS) { return MA_IN_PROGRESS; }
#endif
#ifdef ESTALE
    else if (e == ESTALE) { return MA_INVALID_FILE; }
#endif
#ifdef EUCLEAN
    else if (e == EUCLEAN) { return MA_ERROR; }
#endif
#ifdef ENOTNAM
    else if (e == ENOTNAM) { return MA_ERROR; }
#endif
#ifdef ENAVAIL
    else if (e == ENAVAIL) { return MA_ERROR; }
#endif
#ifdef EISNAM
    else if (e == EISNAM) { return MA_ERROR; }
#endif
#ifdef EREMOTEIO
    else if (e == EREMOTEIO) { return MA_IO_ERROR; }
#endif
#ifdef EDQUOT
    else if (e == EDQUOT) { return MA_NO_SPACE; }
#endif
#ifdef ENOMEDIUM
    else if (e == ENOMEDIUM) { return MA_DOES_NOT_EXIST; }
#endif
#ifdef EMEDIUMTYPE
    else if (e == EMEDIUMTYPE) { return MA_ERROR; }
#endif
#ifdef ECANCELED
    else if (e == ECANCELED) { return MA_CANCELLED; }
#endif
#ifdef ENOKEY
    else if (e == ENOKEY) { return MA_ERROR; }
#endif
#ifdef EKEYEXPIRED
    else if (e == EKEYEXPIRED) { return MA_ERROR; }
#endif
#ifdef EKEYREVOKED
    else if (e == EKEYREVOKED) { return MA_ERROR; }
#endif
#ifdef EKEYREJECTED
    else if (e == EKEYREJECTED) { return MA_ERROR; }
#endif
#ifdef EOWNERDEAD
    else if (e == EOWNERDEAD) { return MA_ERROR; }
#endif
#ifdef ENOTRECOVERABLE
    else if (e == ENOTRECOVERABLE) { return MA_ERROR; }
#endif
#ifdef ERFKILL
    else if (e == ERFKILL) { return MA_ERROR; }
#endif
#ifdef EHWPOISON
    else if (e == EHWPOISON) { return MA_ERROR; }
#endif
    else {
        return MA_ERROR;
    }
}

MA_API ma_result ma_fopen(FILE** ppFile, const char* pFilePath, const char* pOpenMode)
{
#if defined(_MSC_VER) && _MSC_VER >= 1400
    errno_t err;
#endif

    if (ppFile != NULL) {
        *ppFile = NULL;  /* Safety. */
    }

    if (pFilePath == NULL || pOpenMode == NULL || ppFile == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(_MSC_VER) && _MSC_VER >= 1400
    err = fopen_s(ppFile, pFilePath, pOpenMode);
    if (err != 0) {
        return ma_result_from_errno(err);
    }
#else
#if defined(_WIN32) || defined(__APPLE__)
    *ppFile = fopen(pFilePath, pOpenMode);
#else
    #if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS == 64 && defined(_LARGEFILE64_SOURCE)
        *ppFile = fopen64(pFilePath, pOpenMode);
    #else
        *ppFile = fopen(pFilePath, pOpenMode);
    #endif
#endif
    if (*ppFile == NULL) {
        ma_result result = ma_result_from_errno(errno);
        if (result == MA_SUCCESS) {
            result = MA_ERROR;   /* Just a safety check to make sure we never ever return success when pFile == NULL. */
        }

        return result;
    }
#endif

    return MA_SUCCESS;
}



/*
_wfopen() isn't always available in all compilation environments.

    * Windows only.
    * MSVC seems to support it universally as far back as VC6 from what I can tell (haven't checked further back).
    * MinGW-64 (both 32- and 64-bit) seems to support it.
    * MinGW wraps it in !defined(__STRICT_ANSI__).
    * OpenWatcom wraps it in !defined(_NO_EXT_KEYS).

This can be reviewed as compatibility issues arise. The preference is to use _wfopen_s() and _wfopen() as opposed to the wcsrtombs()
fallback, so if you notice your compiler not detecting this properly I'm happy to look at adding support.
*/
#if defined(_WIN32)
    #if defined(_MSC_VER) || defined(__MINGW64__) || (!defined(__STRICT_ANSI__) && !defined(_NO_EXT_KEYS))
        #define MA_HAS_WFOPEN
    #endif
#endif

MA_API ma_result ma_wfopen(FILE** ppFile, const wchar_t* pFilePath, const wchar_t* pOpenMode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (ppFile != NULL) {
        *ppFile = NULL;  /* Safety. */
    }

    if (pFilePath == NULL || pOpenMode == NULL || ppFile == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_HAS_WFOPEN)
    {
        /* Use _wfopen() on Windows. */
    #if defined(_MSC_VER) && _MSC_VER >= 1400
        errno_t err = _wfopen_s(ppFile, pFilePath, pOpenMode);
        if (err != 0) {
            return ma_result_from_errno(err);
        }
    #else
        *ppFile = _wfopen(pFilePath, pOpenMode);
        if (*ppFile == NULL) {
            return ma_result_from_errno(errno);
        }
    #endif
        (void)pAllocationCallbacks;
    }
#else
    /*
    Use fopen() on anything other than Windows. Requires a conversion. This is annoying because fopen() is locale specific. The only real way I can
    think of to do this is with wcsrtombs(). Note that wcstombs() is apparently not thread-safe because it uses a static global mbstate_t object for
    maintaining state. I've checked this with -std=c89 and it works, but if somebody get's a compiler error I'll look into improving compatibility.
    */
    {
        mbstate_t mbs;
        size_t lenMB;
        const wchar_t* pFilePathTemp = pFilePath;
        char* pFilePathMB = NULL;
        char pOpenModeMB[32] = {0};

        /* Get the length first. */
        MA_ZERO_OBJECT(&mbs);
        lenMB = wcsrtombs(NULL, &pFilePathTemp, 0, &mbs);
        if (lenMB == (size_t)-1) {
            return ma_result_from_errno(errno);
        }

        pFilePathMB = (char*)ma_malloc(lenMB + 1, pAllocationCallbacks);
        if (pFilePathMB == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        pFilePathTemp = pFilePath;
        MA_ZERO_OBJECT(&mbs);
        wcsrtombs(pFilePathMB, &pFilePathTemp, lenMB + 1, &mbs);

        /* The open mode should always consist of ASCII characters so we should be able to do a trivial conversion. */
        {
            size_t i = 0;
            for (;;) {
                if (pOpenMode[i] == 0) {
                    pOpenModeMB[i] = '\0';
                    break;
                }

                pOpenModeMB[i] = (char)pOpenMode[i];
                i += 1;
            }
        }

        *ppFile = fopen(pFilePathMB, pOpenModeMB);

        ma_free(pFilePathMB, pAllocationCallbacks);
    }

    if (*ppFile == NULL) {
        return MA_ERROR;
    }
#endif

    return MA_SUCCESS;
}



static MA_INLINE void ma_copy_memory_64(void* dst, const void* src, ma_uint64 sizeInBytes)
{
#if 0xFFFFFFFFFFFFFFFF <= MA_SIZE_MAX
    MA_COPY_MEMORY(dst, src, (size_t)sizeInBytes);
#else
    while (sizeInBytes > 0) {
        ma_uint64 bytesToCopyNow = sizeInBytes;
        if (bytesToCopyNow > MA_SIZE_MAX) {
            bytesToCopyNow = MA_SIZE_MAX;
        }

        MA_COPY_MEMORY(dst, src, (size_t)bytesToCopyNow);  /* Safe cast to size_t. */

        sizeInBytes -= bytesToCopyNow;
        dst = (      void*)((      ma_uint8*)dst + bytesToCopyNow);
        src = (const void*)((const ma_uint8*)src + bytesToCopyNow);
    }
#endif
}

static MA_INLINE void ma_zero_memory_64(void* dst, ma_uint64 sizeInBytes)
{
#if 0xFFFFFFFFFFFFFFFF <= MA_SIZE_MAX
    MA_ZERO_MEMORY(dst, (size_t)sizeInBytes);
#else
    while (sizeInBytes > 0) {
        ma_uint64 bytesToZeroNow = sizeInBytes;
        if (bytesToZeroNow > MA_SIZE_MAX) {
            bytesToZeroNow = MA_SIZE_MAX;
        }

        MA_ZERO_MEMORY(dst, (size_t)bytesToZeroNow);  /* Safe cast to size_t. */

        sizeInBytes -= bytesToZeroNow;
        dst = (void*)((ma_uint8*)dst + bytesToZeroNow);
    }
#endif
}


/* Thanks to good old Bit Twiddling Hacks for this one: http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2 */
static MA_INLINE unsigned int ma_next_power_of_2(unsigned int x)
{
    x--;
    x |= x >> 1;
    x |= x >> 2;
    x |= x >> 4;
    x |= x >> 8;
    x |= x >> 16;
    x++;

    return x;
}

static MA_INLINE unsigned int ma_prev_power_of_2(unsigned int x)
{
    return ma_next_power_of_2(x) >> 1;
}

static MA_INLINE unsigned int ma_round_to_power_of_2(unsigned int x)
{
    unsigned int prev = ma_prev_power_of_2(x);
    unsigned int next = ma_next_power_of_2(x);
    if ((next - x) > (x - prev)) {
        return prev;
    } else {
        return next;
    }
}

static MA_INLINE unsigned int ma_count_set_bits(unsigned int x)
{
    unsigned int count = 0;
    while (x != 0) {
        if (x & 1) {
            count += 1;
        }

        x = x >> 1;
    }

    return count;
}



/**************************************************************************************************************************************************************

Allocation Callbacks

**************************************************************************************************************************************************************/
static void* ma__malloc_default(size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_MALLOC(sz);
}

static void* ma__realloc_default(void* p, size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_REALLOC(p, sz);
}

static void ma__free_default(void* p, void* pUserData)
{
    (void)pUserData;
    MA_FREE(p);
}

static ma_allocation_callbacks ma_allocation_callbacks_init_default(void)
{
    ma_allocation_callbacks callbacks;
    callbacks.pUserData = NULL;
    callbacks.onMalloc  = ma__malloc_default;
    callbacks.onRealloc = ma__realloc_default;
    callbacks.onFree    = ma__free_default;

    return callbacks;
}

static ma_result ma_allocation_callbacks_init_copy(ma_allocation_callbacks* pDst, const ma_allocation_callbacks* pSrc)
{
    if (pDst == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pSrc == NULL) {
        *pDst = ma_allocation_callbacks_init_default();
    } else {
        if (pSrc->pUserData == NULL && pSrc->onFree == NULL && pSrc->onMalloc == NULL && pSrc->onRealloc == NULL) {
            *pDst = ma_allocation_callbacks_init_default();
        } else {
            if (pSrc->onFree == NULL || (pSrc->onMalloc == NULL && pSrc->onRealloc == NULL)) {
                return MA_INVALID_ARGS;    /* Invalid allocation callbacks. */
            } else {
                *pDst = *pSrc;
            }
        }
    }

    return MA_SUCCESS;
}




/**************************************************************************************************************************************************************

Logging

**************************************************************************************************************************************************************/
MA_API const char* ma_log_level_to_string(ma_uint32 logLevel)
{
    switch (logLevel)
    {
        case MA_LOG_LEVEL_DEBUG:   return "DEBUG";
        case MA_LOG_LEVEL_INFO:    return "INFO";
        case MA_LOG_LEVEL_WARNING: return "WARNING";
        case MA_LOG_LEVEL_ERROR:   return "ERROR";
        default:                   return "ERROR";
    }
}

#if defined(MA_DEBUG_OUTPUT)
#if defined(MA_ANDROID)
    #include <android/log.h>
#endif

/* Customize this to use a specific tag in __android_log_print() for debug output messages. */
#ifndef MA_ANDROID_LOG_TAG
#define MA_ANDROID_LOG_TAG  "miniaudio"
#endif

void ma_log_callback_debug(void* pUserData, ma_uint32 level, const char* pMessage)
{
    (void)pUserData;

    /* Special handling for some platforms. */
    #if defined(MA_ANDROID)
    {
        /* Android. */
        __android_log_print(ANDROID_LOG_DEBUG, MA_ANDROID_LOG_TAG, "%s: %s", ma_log_level_to_string(level), pMessage);
    }
    #else
    {
        /* Everything else. */
        printf("%s: %s", ma_log_level_to_string(level), pMessage);
    }
    #endif
}
#endif

MA_API ma_log_callback ma_log_callback_init(ma_log_callback_proc onLog, void* pUserData)
{
    ma_log_callback callback;

    MA_ZERO_OBJECT(&callback);
    callback.onLog     = onLog;
    callback.pUserData = pUserData;

    return callback;
}


MA_API ma_result ma_log_init(const ma_allocation_callbacks* pAllocationCallbacks, ma_log* pLog)
{
    if (pLog == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pLog);
    ma_allocation_callbacks_init_copy(&pLog->allocationCallbacks, pAllocationCallbacks);

    /* We need a mutex for thread safety. */
    #ifndef MA_NO_THREADING
    {
        ma_result result = ma_mutex_init(&pLog->lock);
        if (result != MA_SUCCESS) {
            return result;
        }
    }
    #endif

    /* If we're using debug output, enable it. */
    #if defined(MA_DEBUG_OUTPUT)
    {
        ma_log_register_callback(pLog, ma_log_callback_init(ma_log_callback_debug, NULL)); /* Doesn't really matter if this fails. */
    }
    #endif

    return MA_SUCCESS;
}

MA_API void ma_log_uninit(ma_log* pLog)
{
    if (pLog == NULL) {
        return;
    }

#ifndef MA_NO_THREADING
    ma_mutex_uninit(&pLog->lock);
#endif
}

static void ma_log_lock(ma_log* pLog)
{
#ifndef MA_NO_THREADING
    ma_mutex_lock(&pLog->lock);
#else
    (void)pLog;
#endif
}

static void ma_log_unlock(ma_log* pLog)
{
#ifndef MA_NO_THREADING
    ma_mutex_unlock(&pLog->lock);
#else
    (void)pLog;
#endif
}

MA_API ma_result ma_log_register_callback(ma_log* pLog, ma_log_callback callback)
{
    ma_result result = MA_SUCCESS;

    if (pLog == NULL || callback.onLog == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_log_lock(pLog);
    {
        if (pLog->callbackCount == ma_countof(pLog->callbacks)) {
            result = MA_OUT_OF_MEMORY;  /* Reached the maximum allowed log callbacks. */
        } else {
            pLog->callbacks[pLog->callbackCount] = callback;
            pLog->callbackCount += 1;
        }
    }
    ma_log_unlock(pLog);

    return result;
}

MA_API ma_result ma_log_unregister_callback(ma_log* pLog, ma_log_callback callback)
{
    if (pLog == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_log_lock(pLog);
    {
        ma_uint32 iLog;
        for (iLog = 0; iLog < pLog->callbackCount; ) {
            if (pLog->callbacks[iLog].onLog == callback.onLog) {
                /* Found. Move everything down a slot. */
                ma_uint32 jLog;
                for (jLog = iLog; jLog < pLog->callbackCount-1; jLog += 1) {
                    pLog->callbacks[jLog] = pLog->callbacks[jLog + 1];
                }

                pLog->callbackCount -= 1;
            } else {
                /* Not found. */
                iLog += 1;
            }
        }
    }
    ma_log_unlock(pLog);

    return MA_SUCCESS;
}

MA_API ma_result ma_log_post(ma_log* pLog, ma_uint32 level, const char* pMessage)
{
    if (pLog == NULL || pMessage == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_log_lock(pLog);
    {
        ma_uint32 iLog;
        for (iLog = 0; iLog < pLog->callbackCount; iLog += 1) {
            if (pLog->callbacks[iLog].onLog) {
                pLog->callbacks[iLog].onLog(pLog->callbacks[iLog].pUserData, level, pMessage);
            }
        }
    }
    ma_log_unlock(pLog);

    return MA_SUCCESS;
}


/*
We need to emulate _vscprintf() for the VC6 build. This can be more efficient, but since it's only VC6, and it's just a
logging function, I'm happy to keep this simple. In the VC6 build we can implement this in terms of _vsnprintf().
*/
#if defined(_MSC_VER) && _MSC_VER < 1900
static int ma_vscprintf(const ma_allocation_callbacks* pAllocationCallbacks, const char* format, va_list args)
{
#if _MSC_VER > 1200
    return _vscprintf(format, args);
#else
    int result;
    char* pTempBuffer = NULL;
    size_t tempBufferCap = 1024;

    if (format == NULL) {
        errno = EINVAL;
        return -1;
    }

    for (;;) {
        char* pNewTempBuffer = (char*)ma_realloc(pTempBuffer, tempBufferCap, pAllocationCallbacks);
        if (pNewTempBuffer == NULL) {
            ma_free(pTempBuffer, pAllocationCallbacks);
            errno = ENOMEM;
            return -1;  /* Out of memory. */
        }

        pTempBuffer = pNewTempBuffer;

        result = _vsnprintf(pTempBuffer, tempBufferCap, format, args);
        ma_free(pTempBuffer, NULL);

        if (result != -1) {
            break;  /* Got it. */
        }

        /* Buffer wasn't big enough. Ideally it'd be nice to use an error code to know the reason for sure, but this is reliable enough. */
        tempBufferCap *= 2;
    }

    return result;
#endif
}
#endif

MA_API ma_result ma_log_postv(ma_log* pLog, ma_uint32 level, const char* pFormat, va_list args)
{
    if (pLog == NULL || pFormat == NULL) {
        return MA_INVALID_ARGS;
    }

    #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || ((!defined(_MSC_VER) || _MSC_VER >= 1900) && !defined(__STRICT_ANSI__) && !defined(_NO_EXT_KEYS)) || (defined(__cplusplus) && __cplusplus >= 201103L)
    {
        ma_result result;
        int length;
        char  pFormattedMessageStack[1024];
        char* pFormattedMessageHeap = NULL;

        /* First try formatting into our fixed sized stack allocated buffer. If this is too small we'll fallback to a heap allocation. */
        length = vsnprintf(pFormattedMessageStack, sizeof(pFormattedMessageStack), pFormat, args);
        if (length < 0) {
            return MA_INVALID_OPERATION;    /* An error occurred when trying to convert the buffer. */
        }

        if ((size_t)length < sizeof(pFormattedMessageStack)) {
            /* The string was written to the stack. */
            result = ma_log_post(pLog, level, pFormattedMessageStack);
        } else {
            /* The stack buffer was too small, try the heap. */
            pFormattedMessageHeap = (char*)ma_malloc(length + 1, &pLog->allocationCallbacks);
            if (pFormattedMessageHeap == NULL) {
                return MA_OUT_OF_MEMORY;
            }

            length = vsnprintf(pFormattedMessageHeap, length + 1, pFormat, args);
            if (length < 0) {
                ma_free(pFormattedMessageHeap, &pLog->allocationCallbacks);
                return MA_INVALID_OPERATION;
            }

            result = ma_log_post(pLog, level, pFormattedMessageHeap);
            ma_free(pFormattedMessageHeap, &pLog->allocationCallbacks);
        }

        return result;
    }
    #else
    {
        /*
        Without snprintf() we need to first measure the string and then heap allocate it. I'm only aware of Visual Studio having support for this without snprintf(), so we'll
        need to restrict this branch to Visual Studio. For other compilers we need to just not support formatted logging because I don't want the security risk of overflowing
        a fixed sized stack allocated buffer.
        */
        #if defined(_MSC_VER) && _MSC_VER >= 1200   /* 1200 = VC6 */
        {
            ma_result result;
            int formattedLen;
            char* pFormattedMessage = NULL;
            va_list args2;

            #if _MSC_VER >= 1800
            {
                va_copy(args2, args);
            }
            #else
            {
                args2 = args;
            }
            #endif

            formattedLen = ma_vscprintf(&pLog->allocationCallbacks, pFormat, args2);
            va_end(args2);

            if (formattedLen <= 0) {
                return MA_INVALID_OPERATION;
            }

            pFormattedMessage = (char*)ma_malloc(formattedLen + 1, &pLog->allocationCallbacks);
            if (pFormattedMessage == NULL) {
                return MA_OUT_OF_MEMORY;
            }

            /* We'll get errors on newer versions of Visual Studio if we try to use vsprintf().  */
            #if _MSC_VER >= 1400    /* 1400 = Visual Studio 2005 */
            {
                vsprintf_s(pFormattedMessage, formattedLen + 1, pFormat, args);
            }
            #else
            {
                vsprintf(pFormattedMessage, pFormat, args);
            }
            #endif

            result = ma_log_post(pLog, level, pFormattedMessage);
            ma_free(pFormattedMessage, &pLog->allocationCallbacks);

            return result;
        }
        #else
        {
            /* Can't do anything because we don't have a safe way of to emulate vsnprintf() without a manual solution. */
            (void)level;
            (void)args;

            return MA_INVALID_OPERATION;
        }
        #endif
    }
    #endif
}

MA_API ma_result ma_log_postf(ma_log* pLog, ma_uint32 level, const char* pFormat, ...)
{
    ma_result result;
    va_list args;

    if (pLog == NULL || pFormat == NULL) {
        return MA_INVALID_ARGS;
    }

    va_start(args, pFormat);
    {
        result = ma_log_postv(pLog, level, pFormat, args);
    }
    va_end(args);

    return result;
}



static MA_INLINE ma_uint8 ma_clip_u8(ma_int32 x)
{
    return (ma_uint8)(ma_clamp(x, -128, 127) + 128);
}

static MA_INLINE ma_int16 ma_clip_s16(ma_int32 x)
{
    return (ma_int16)ma_clamp(x, -32768, 32767);
}

static MA_INLINE ma_int64 ma_clip_s24(ma_int64 x)
{
    return (ma_int64)ma_clamp(x, -8388608, 8388607);
}

static MA_INLINE ma_int32 ma_clip_s32(ma_int64 x)
{
    /* This dance is to silence warnings with -std=c89. A good compiler should be able to optimize this away. */
    ma_int64 clipMin;
    ma_int64 clipMax;
    clipMin = -((ma_int64)2147483647 + 1);
    clipMax =   (ma_int64)2147483647;

    return (ma_int32)ma_clamp(x, clipMin, clipMax);
}

static MA_INLINE float ma_clip_f32(float x)
{
    if (x < -1) return -1;
    if (x > +1) return +1;
    return x;
}


static MA_INLINE float ma_mix_f32(float x, float y, float a)
{
    return x*(1-a) + y*a;
}
static MA_INLINE float ma_mix_f32_fast(float x, float y, float a)
{
    float r0 = (y - x);
    float r1 = r0*a;
    return x + r1;
    /*return x + (y - x)*a;*/
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE __m128 ma_mix_f32_fast__sse2(__m128 x, __m128 y, __m128 a)
{
    return _mm_add_ps(x, _mm_mul_ps(_mm_sub_ps(y, x), a));
}
#endif
#if defined(MA_SUPPORT_AVX2)
static MA_INLINE __m256 ma_mix_f32_fast__avx2(__m256 x, __m256 y, __m256 a)
{
    return _mm256_add_ps(x, _mm256_mul_ps(_mm256_sub_ps(y, x), a));
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE float32x4_t ma_mix_f32_fast__neon(float32x4_t x, float32x4_t y, float32x4_t a)
{
    return vaddq_f32(x, vmulq_f32(vsubq_f32(y, x), a));
}
#endif


static MA_INLINE double ma_mix_f64(double x, double y, double a)
{
    return x*(1-a) + y*a;
}
static MA_INLINE double ma_mix_f64_fast(double x, double y, double a)
{
    return x + (y - x)*a;
}

static MA_INLINE float ma_scale_to_range_f32(float x, float lo, float hi)
{
    return lo + x*(hi-lo);
}


/*
Greatest common factor using Euclid's algorithm iteratively.
*/
static MA_INLINE ma_uint32 ma_gcf_u32(ma_uint32 a, ma_uint32 b)
{
    for (;;) {
        if (b == 0) {
            break;
        } else {
            ma_uint32 t = a;
            a = b;
            b = t % a;
        }
    }

    return a;
}


static ma_uint32 ma_ffs_32(ma_uint32 x)
{
    ma_uint32 i;

    /* Just a naive implementation just to get things working for now. Will optimize this later. */
    for (i = 0; i < 32; i += 1) {
        if ((x & (1U << i)) != 0) {
            return i;
        }
    }

    return i;
}

static MA_INLINE ma_int16 ma_float_to_fixed_16(float x)
{
    return (ma_int16)(x * (1 << 8));
}



/*
Random Number Generation

miniaudio uses the LCG random number generation algorithm. This is good enough for audio.

Note that miniaudio's global LCG implementation uses global state which is _not_ thread-local. When this is called across
multiple threads, results will be unpredictable. However, it won't crash and results will still be random enough for
miniaudio's purposes.
*/
#ifndef MA_DEFAULT_LCG_SEED
#define MA_DEFAULT_LCG_SEED 4321
#endif

#define MA_LCG_M   2147483647
#define MA_LCG_A   48271
#define MA_LCG_C   0

static ma_lcg g_maLCG = {MA_DEFAULT_LCG_SEED}; /* Non-zero initial seed. Use ma_seed() to use an explicit seed. */

static MA_INLINE void ma_lcg_seed(ma_lcg* pLCG, ma_int32 seed)
{
    MA_ASSERT(pLCG != NULL);
    pLCG->state = seed;
}

static MA_INLINE ma_int32 ma_lcg_rand_s32(ma_lcg* pLCG)
{
    pLCG->state = (MA_LCG_A * pLCG->state + MA_LCG_C) % MA_LCG_M;
    return pLCG->state;
}

static MA_INLINE ma_uint32 ma_lcg_rand_u32(ma_lcg* pLCG)
{
    return (ma_uint32)ma_lcg_rand_s32(pLCG);
}

static MA_INLINE ma_int16 ma_lcg_rand_s16(ma_lcg* pLCG)
{
    return (ma_int16)(ma_lcg_rand_s32(pLCG) & 0xFFFF);
}

static MA_INLINE double ma_lcg_rand_f64(ma_lcg* pLCG)
{
    return ma_lcg_rand_s32(pLCG) / (double)0x7FFFFFFF;
}

static MA_INLINE float ma_lcg_rand_f32(ma_lcg* pLCG)
{
    return (float)ma_lcg_rand_f64(pLCG);
}

static MA_INLINE float ma_lcg_rand_range_f32(ma_lcg* pLCG, float lo, float hi)
{
    return ma_scale_to_range_f32(ma_lcg_rand_f32(pLCG), lo, hi);
}

static MA_INLINE ma_int32 ma_lcg_rand_range_s32(ma_lcg* pLCG, ma_int32 lo, ma_int32 hi)
{
    if (lo == hi) {
        return lo;
    }

    return lo + ma_lcg_rand_u32(pLCG) / (0xFFFFFFFF / (hi - lo + 1) + 1);
}



static MA_INLINE void ma_seed(ma_int32 seed)
{
    ma_lcg_seed(&g_maLCG, seed);
}

static MA_INLINE ma_int32 ma_rand_s32(void)
{
    return ma_lcg_rand_s32(&g_maLCG);
}

static MA_INLINE ma_uint32 ma_rand_u32(void)
{
    return ma_lcg_rand_u32(&g_maLCG);
}

static MA_INLINE double ma_rand_f64(void)
{
    return ma_lcg_rand_f64(&g_maLCG);
}

static MA_INLINE float ma_rand_f32(void)
{
    return ma_lcg_rand_f32(&g_maLCG);
}

static MA_INLINE float ma_rand_range_f32(float lo, float hi)
{
    return ma_lcg_rand_range_f32(&g_maLCG, lo, hi);
}

static MA_INLINE ma_int32 ma_rand_range_s32(ma_int32 lo, ma_int32 hi)
{
    return ma_lcg_rand_range_s32(&g_maLCG, lo, hi);
}


static MA_INLINE float ma_dither_f32_rectangle(float ditherMin, float ditherMax)
{
    return ma_rand_range_f32(ditherMin, ditherMax);
}

static MA_INLINE float ma_dither_f32_triangle(float ditherMin, float ditherMax)
{
    float a = ma_rand_range_f32(ditherMin, 0);
    float b = ma_rand_range_f32(0, ditherMax);
    return a + b;
}

static MA_INLINE float ma_dither_f32(ma_dither_mode ditherMode, float ditherMin, float ditherMax)
{
    if (ditherMode == ma_dither_mode_rectangle) {
        return ma_dither_f32_rectangle(ditherMin, ditherMax);
    }
    if (ditherMode == ma_dither_mode_triangle) {
        return ma_dither_f32_triangle(ditherMin, ditherMax);
    }

    return 0;
}

static MA_INLINE ma_int32 ma_dither_s32(ma_dither_mode ditherMode, ma_int32 ditherMin, ma_int32 ditherMax)
{
    if (ditherMode == ma_dither_mode_rectangle) {
        ma_int32 a = ma_rand_range_s32(ditherMin, ditherMax);
        return a;
    }
    if (ditherMode == ma_dither_mode_triangle) {
        ma_int32 a = ma_rand_range_s32(ditherMin, 0);
        ma_int32 b = ma_rand_range_s32(0, ditherMax);
        return a + b;
    }

    return 0;
}


/**************************************************************************************************************************************************************

Atomics

**************************************************************************************************************************************************************/
/* c89atomic.h begin */
#ifndef ma_atomic_h
#if defined(__cplusplus)
extern "C" {
#endif
#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wlong-long"
    #if defined(__clang__)
        #pragma GCC diagnostic ignored "-Wc++11-long-long"
    #endif
#endif
typedef int ma_atomic_memory_order;
#define MA_ATOMIC_HAS_8
#define MA_ATOMIC_HAS_16
#define MA_ATOMIC_HAS_32
#define MA_ATOMIC_HAS_64
#if (defined(_MSC_VER) ) || defined(__WATCOMC__) || defined(__DMC__)
    #define MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, intrin, ma_atomicType, msvcType)   \
        ma_atomicType result; \
        switch (order) \
        { \
            case ma_atomic_memory_order_relaxed: \
            { \
                result = (ma_atomicType)intrin##_nf((volatile msvcType*)dst, (msvcType)src); \
            } break; \
            case ma_atomic_memory_order_consume: \
            case ma_atomic_memory_order_acquire: \
            { \
                result = (ma_atomicType)intrin##_acq((volatile msvcType*)dst, (msvcType)src); \
            } break; \
            case ma_atomic_memory_order_release: \
            { \
                result = (ma_atomicType)intrin##_rel((volatile msvcType*)dst, (msvcType)src); \
            } break; \
            case ma_atomic_memory_order_acq_rel: \
            case ma_atomic_memory_order_seq_cst: \
            default: \
            { \
                result = (ma_atomicType)intrin((volatile msvcType*)dst, (msvcType)src); \
            } break; \
        } \
        return result;
    #define MA_ATOMIC_MSVC_ARM_INTRINSIC_COMPARE_EXCHANGE(ptr, expected, desired, order, intrin, ma_atomicType, msvcType)   \
        ma_atomicType result; \
        switch (order) \
        { \
            case ma_atomic_memory_order_relaxed: \
            { \
                result = (ma_atomicType)intrin##_nf((volatile msvcType*)ptr, (msvcType)expected, (msvcType)desired); \
            } break; \
            case ma_atomic_memory_order_consume: \
            case ma_atomic_memory_order_acquire: \
            { \
                result = (ma_atomicType)intrin##_acq((volatile msvcType*)ptr, (msvcType)expected, (msvcType)desired); \
            } break; \
            case ma_atomic_memory_order_release: \
            { \
                result = (ma_atomicType)intrin##_rel((volatile msvcType*)ptr, (msvcType)expected, (msvcType)desired); \
            } break; \
            case ma_atomic_memory_order_acq_rel: \
            case ma_atomic_memory_order_seq_cst: \
            default: \
            { \
                result = (ma_atomicType)intrin((volatile msvcType*)ptr, (msvcType)expected, (msvcType)desired); \
            } break; \
        } \
        return result;
    #define ma_atomic_memory_order_relaxed  0
    #define ma_atomic_memory_order_consume  1
    #define ma_atomic_memory_order_acquire  2
    #define ma_atomic_memory_order_release  3
    #define ma_atomic_memory_order_acq_rel  4
    #define ma_atomic_memory_order_seq_cst  5
    #if _MSC_VER < 1600 && defined(MA_X86)
        #define MA_ATOMIC_MSVC_USE_INLINED_ASSEMBLY
    #endif
    #if _MSC_VER < 1600
        #undef MA_ATOMIC_HAS_8
        #undef MA_ATOMIC_HAS_16
    #endif
    #if !defined(MA_ATOMIC_MSVC_USE_INLINED_ASSEMBLY)
        #include <intrin.h>
    #endif
    #if defined(MA_ATOMIC_MSVC_USE_INLINED_ASSEMBLY)
        #if defined(MA_ATOMIC_HAS_8)
            static MA_INLINE ma_uint8 __stdcall ma_atomic_compare_and_swap_8(volatile ma_uint8* dst, ma_uint8 expected, ma_uint8 desired)
            {
                ma_uint8 result = 0;
                __asm {
                    mov ecx, dst
                    mov al,  expected
                    mov dl,  desired
                    lock cmpxchg [ecx], dl
                    mov result, al
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_16)
            static MA_INLINE ma_uint16 __stdcall ma_atomic_compare_and_swap_16(volatile ma_uint16* dst, ma_uint16 expected, ma_uint16 desired)
            {
                ma_uint16 result = 0;
                __asm {
                    mov ecx, dst
                    mov ax,  expected
                    mov dx,  desired
                    lock cmpxchg [ecx], dx
                    mov result, ax
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_32)
            static MA_INLINE ma_uint32 __stdcall ma_atomic_compare_and_swap_32(volatile ma_uint32* dst, ma_uint32 expected, ma_uint32 desired)
            {
                ma_uint32 result = 0;
                __asm {
                    mov ecx, dst
                    mov eax, expected
                    mov edx, desired
                    lock cmpxchg [ecx], edx
                    mov result, eax
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_64)
            static MA_INLINE ma_uint64 __stdcall ma_atomic_compare_and_swap_64(volatile ma_uint64* dst, ma_uint64 expected, ma_uint64 desired)
            {
                ma_uint32 resultEAX = 0;
                ma_uint32 resultEDX = 0;
                __asm {
                    mov esi, dst
                    mov eax, dword ptr expected
                    mov edx, dword ptr expected + 4
                    mov ebx, dword ptr desired
                    mov ecx, dword ptr desired + 4
                    lock cmpxchg8b qword ptr [esi]
                    mov resultEAX, eax
                    mov resultEDX, edx
                }
                return ((ma_uint64)resultEDX << 32) | resultEAX;
            }
        #endif
    #else
        #if defined(MA_ATOMIC_HAS_8)
            #define ma_atomic_compare_and_swap_8( dst, expected, desired) (ma_uint8 )_InterlockedCompareExchange8((volatile char*)dst, (char)desired, (char)expected)
        #endif
        #if defined(MA_ATOMIC_HAS_16)
            #define ma_atomic_compare_and_swap_16(dst, expected, desired) (ma_uint16)_InterlockedCompareExchange16((volatile short*)dst, (short)desired, (short)expected)
        #endif
        #if defined(MA_ATOMIC_HAS_32)
            #define ma_atomic_compare_and_swap_32(dst, expected, desired) (ma_uint32)_InterlockedCompareExchange((volatile long*)dst, (long)desired, (long)expected)
        #endif
        #if defined(MA_ATOMIC_HAS_64)
            #define ma_atomic_compare_and_swap_64(dst, expected, desired) (ma_uint64)_InterlockedCompareExchange64((volatile ma_int64*)dst, (ma_int64)desired, (ma_int64)expected)
        #endif
    #endif
    #if defined(MA_ATOMIC_MSVC_USE_INLINED_ASSEMBLY)
        #if defined(MA_ATOMIC_HAS_8)
            static MA_INLINE ma_uint8 __stdcall ma_atomic_exchange_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
            {
                ma_uint8 result = 0;
                (void)order;
                __asm {
                    mov ecx, dst
                    mov al,  src
                    lock xchg [ecx], al
                    mov result, al
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_16)
            static MA_INLINE ma_uint16 __stdcall ma_atomic_exchange_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
            {
                ma_uint16 result = 0;
                (void)order;
                __asm {
                    mov ecx, dst
                    mov ax,  src
                    lock xchg [ecx], ax
                    mov result, ax
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_32)
            static MA_INLINE ma_uint32 __stdcall ma_atomic_exchange_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
            {
                ma_uint32 result = 0;
                (void)order;
                __asm {
                    mov ecx, dst
                    mov eax, src
                    lock xchg [ecx], eax
                    mov result, eax
                }
                return result;
            }
        #endif
    #else
        #if defined(MA_ATOMIC_HAS_8)
            static MA_INLINE ma_uint8 __stdcall ma_atomic_exchange_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchange8, ma_uint8, char);
            #else
                (void)order;
                return (ma_uint8)_InterlockedExchange8((volatile char*)dst, (char)src);
            #endif
            }
        #endif
        #if defined(MA_ATOMIC_HAS_16)
            static MA_INLINE ma_uint16 __stdcall ma_atomic_exchange_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchange16, ma_uint16, short);
            #else
                (void)order;
                return (ma_uint16)_InterlockedExchange16((volatile short*)dst, (short)src);
            #endif
            }
        #endif
        #if defined(MA_ATOMIC_HAS_32)
            static MA_INLINE ma_uint32 __stdcall ma_atomic_exchange_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchange, ma_uint32, long);
            #else
                (void)order;
                return (ma_uint32)_InterlockedExchange((volatile long*)dst, (long)src);
            #endif
            }
        #endif
        #if defined(MA_ATOMIC_HAS_64) && defined(MA_64BIT)
            static MA_INLINE ma_uint64 __stdcall ma_atomic_exchange_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchange64, ma_uint64, long long);
            #else
                (void)order;
                return (ma_uint64)_InterlockedExchange64((volatile long long*)dst, (long long)src);
            #endif
            }
        #else
        #endif
    #endif
    #if defined(MA_ATOMIC_HAS_64) && !defined(MA_64BIT)
        static MA_INLINE ma_uint64 __stdcall ma_atomic_exchange_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            do {
                oldValue = *dst;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, src) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #if defined(MA_ATOMIC_MSVC_USE_INLINED_ASSEMBLY)
        #if defined(MA_ATOMIC_HAS_8)
            static MA_INLINE ma_uint8 __stdcall ma_atomic_fetch_add_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
            {
                ma_uint8 result = 0;
                (void)order;
                __asm {
                    mov ecx, dst
                    mov al,  src
                    lock xadd [ecx], al
                    mov result, al
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_16)
            static MA_INLINE ma_uint16 __stdcall ma_atomic_fetch_add_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
            {
                ma_uint16 result = 0;
                (void)order;
                __asm {
                    mov ecx, dst
                    mov ax,  src
                    lock xadd [ecx], ax
                    mov result, ax
                }
                return result;
            }
        #endif
        #if defined(MA_ATOMIC_HAS_32)
            static MA_INLINE ma_uint32 __stdcall ma_atomic_fetch_add_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
            {
                ma_uint32 result = 0;
                (void)order;
                __asm {
                    mov ecx, dst
                    mov eax, src
                    lock xadd [ecx], eax
                    mov result, eax
                }
                return result;
            }
        #endif
    #else
        #if defined(MA_ATOMIC_HAS_8)
            static MA_INLINE ma_uint8 __stdcall ma_atomic_fetch_add_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchangeAdd8, ma_uint8, char);
            #else
                (void)order;
                return (ma_uint8)_InterlockedExchangeAdd8((volatile char*)dst, (char)src);
            #endif
            }
        #endif
        #if defined(MA_ATOMIC_HAS_16)
            static MA_INLINE ma_uint16 __stdcall ma_atomic_fetch_add_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchangeAdd16, ma_uint16, short);
            #else
                (void)order;
                return (ma_uint16)_InterlockedExchangeAdd16((volatile short*)dst, (short)src);
            #endif
            }
        #endif
        #if defined(MA_ATOMIC_HAS_32)
            static MA_INLINE ma_uint32 __stdcall ma_atomic_fetch_add_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchangeAdd, ma_uint32, long);
            #else
                (void)order;
                return (ma_uint32)_InterlockedExchangeAdd((volatile long*)dst, (long)src);
            #endif
            }
        #endif
        #if defined(MA_ATOMIC_HAS_64) && defined(MA_64BIT)
            static MA_INLINE ma_uint64 __stdcall ma_atomic_fetch_add_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
            {
            #if defined(MA_ARM)
                MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedExchangeAdd64, ma_uint64, long long);
            #else
                (void)order;
                return (ma_uint64)_InterlockedExchangeAdd64((volatile long long*)dst, (long long)src);
            #endif
            }
        #else
        #endif
    #endif
    #if defined(MA_ATOMIC_HAS_64) && !defined(MA_64BIT)
        static MA_INLINE ma_uint64 __stdcall ma_atomic_fetch_add_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue + src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #if defined(MA_ATOMIC_MSVC_USE_INLINED_ASSEMBLY)
        static MA_INLINE void __stdcall ma_atomic_thread_fence(ma_atomic_memory_order order)
        {
            (void)order;
            __asm {
                lock add [esp], 0
            }
        }
    #else
        #if defined(MA_X64)
            #define ma_atomic_thread_fence(order)   __faststorefence(), (void)order
        #elif defined(MA_ARM64)
            #define ma_atomic_thread_fence(order)   __dmb(_ARM64_BARRIER_ISH), (void)order
        #else
            static MA_INLINE void ma_atomic_thread_fence(ma_atomic_memory_order order)
            {
                volatile ma_uint32 barrier = 0;
                ma_atomic_fetch_add_explicit_32(&barrier, 0, order);
            }
        #endif
    #endif
    #define ma_atomic_compiler_fence()      ma_atomic_thread_fence(ma_atomic_memory_order_seq_cst)
    #define ma_atomic_signal_fence(order)   ma_atomic_thread_fence(order)
    #if defined(MA_ATOMIC_HAS_8)
        static MA_INLINE ma_uint8 ma_atomic_load_explicit_8(volatile const ma_uint8* ptr, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC_COMPARE_EXCHANGE(ptr, 0, 0, order, _InterlockedCompareExchange8, ma_uint8, char);
        #else
            (void)order;
            return ma_atomic_compare_and_swap_8((volatile ma_uint8*)ptr, 0, 0);
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        static MA_INLINE ma_uint16 ma_atomic_load_explicit_16(volatile const ma_uint16* ptr, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC_COMPARE_EXCHANGE(ptr, 0, 0, order, _InterlockedCompareExchange16, ma_uint16, short);
        #else
            (void)order;
            return ma_atomic_compare_and_swap_16((volatile ma_uint16*)ptr, 0, 0);
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        static MA_INLINE ma_uint32 ma_atomic_load_explicit_32(volatile const ma_uint32* ptr, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC_COMPARE_EXCHANGE(ptr, 0, 0, order, _InterlockedCompareExchange, ma_uint32, long);
        #else
            (void)order;
            return ma_atomic_compare_and_swap_32((volatile ma_uint32*)ptr, 0, 0);
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        static MA_INLINE ma_uint64 ma_atomic_load_explicit_64(volatile const ma_uint64* ptr, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC_COMPARE_EXCHANGE(ptr, 0, 0, order, _InterlockedCompareExchange64, ma_uint64, long long);
        #else
            (void)order;
            return ma_atomic_compare_and_swap_64((volatile ma_uint64*)ptr, 0, 0);
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        #define ma_atomic_store_explicit_8( dst, src, order) (void)ma_atomic_exchange_explicit_8 (dst, src, order)
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        #define ma_atomic_store_explicit_16(dst, src, order) (void)ma_atomic_exchange_explicit_16(dst, src, order)
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        #define ma_atomic_store_explicit_32(dst, src, order) (void)ma_atomic_exchange_explicit_32(dst, src, order)
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        #define ma_atomic_store_explicit_64(dst, src, order) (void)ma_atomic_exchange_explicit_64(dst, src, order)
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        static MA_INLINE ma_uint8 __stdcall ma_atomic_fetch_sub_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue - src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        static MA_INLINE ma_uint16 __stdcall ma_atomic_fetch_sub_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue - src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        static MA_INLINE ma_uint32 __stdcall ma_atomic_fetch_sub_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue - src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        static MA_INLINE ma_uint64 __stdcall ma_atomic_fetch_sub_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue - src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        static MA_INLINE ma_uint8 __stdcall ma_atomic_fetch_and_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedAnd8, ma_uint8, char);
        #else
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue & src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        static MA_INLINE ma_uint16 __stdcall ma_atomic_fetch_and_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedAnd16, ma_uint16, short);
        #else
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue & src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        static MA_INLINE ma_uint32 __stdcall ma_atomic_fetch_and_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedAnd, ma_uint32, long);
        #else
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue & src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        static MA_INLINE ma_uint64 __stdcall ma_atomic_fetch_and_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedAnd64, ma_uint64, long long);
        #else
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue & src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        static MA_INLINE ma_uint8 __stdcall ma_atomic_fetch_xor_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedXor8, ma_uint8, char);
        #else
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue ^ src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        static MA_INLINE ma_uint16 __stdcall ma_atomic_fetch_xor_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedXor16, ma_uint16, short);
        #else
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue ^ src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        static MA_INLINE ma_uint32 __stdcall ma_atomic_fetch_xor_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedXor, ma_uint32, long);
        #else
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue ^ src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        static MA_INLINE ma_uint64 __stdcall ma_atomic_fetch_xor_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedXor64, ma_uint64, long long);
        #else
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue ^ src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        static MA_INLINE ma_uint8 __stdcall ma_atomic_fetch_or_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedOr8, ma_uint8, char);
        #else
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue | src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        static MA_INLINE ma_uint16 __stdcall ma_atomic_fetch_or_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedOr16, ma_uint16, short);
        #else
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue | src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        static MA_INLINE ma_uint32 __stdcall ma_atomic_fetch_or_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedOr, ma_uint32, long);
        #else
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue | src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        static MA_INLINE ma_uint64 __stdcall ma_atomic_fetch_or_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
        #if defined(MA_ARM)
            MA_ATOMIC_MSVC_ARM_INTRINSIC(dst, src, order, _InterlockedOr64, ma_uint64, long long);
        #else
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue | src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        #endif
        }
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        #define ma_atomic_test_and_set_explicit_8( dst, order) ma_atomic_exchange_explicit_8 (dst, 1, order)
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        #define ma_atomic_test_and_set_explicit_16(dst, order) ma_atomic_exchange_explicit_16(dst, 1, order)
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        #define ma_atomic_test_and_set_explicit_32(dst, order) ma_atomic_exchange_explicit_32(dst, 1, order)
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        #define ma_atomic_test_and_set_explicit_64(dst, order) ma_atomic_exchange_explicit_64(dst, 1, order)
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        #define ma_atomic_clear_explicit_8( dst, order) ma_atomic_store_explicit_8 (dst, 0, order)
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        #define ma_atomic_clear_explicit_16(dst, order) ma_atomic_store_explicit_16(dst, 0, order)
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        #define ma_atomic_clear_explicit_32(dst, order) ma_atomic_store_explicit_32(dst, 0, order)
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        #define ma_atomic_clear_explicit_64(dst, order) ma_atomic_store_explicit_64(dst, 0, order)
    #endif
    #if defined(MA_ATOMIC_HAS_8)
        typedef ma_uint8 ma_atomic_flag;
        #define ma_atomic_flag_test_and_set_explicit(ptr, order)    (ma_bool32)ma_atomic_test_and_set_explicit_8(ptr, order)
        #define ma_atomic_flag_clear_explicit(ptr, order)           ma_atomic_clear_explicit_8(ptr, order)
        #define ma_atomic_flag_load_explicit(ptr, order)            ma_atomic_load_explicit_8(ptr, order)
    #else
        typedef ma_uint32 ma_atomic_flag;
        #define ma_atomic_flag_test_and_set_explicit(ptr, order)    (ma_bool32)ma_atomic_test_and_set_explicit_32(ptr, order)
        #define ma_atomic_flag_clear_explicit(ptr, order)           ma_atomic_clear_explicit_32(ptr, order)
        #define ma_atomic_flag_load_explicit(ptr, order)            ma_atomic_load_explicit_32(ptr, order)
    #endif
#elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)))
    #define MA_ATOMIC_HAS_NATIVE_COMPARE_EXCHANGE
    #define MA_ATOMIC_HAS_NATIVE_IS_LOCK_FREE
    #define ma_atomic_memory_order_relaxed                          __ATOMIC_RELAXED
    #define ma_atomic_memory_order_consume                          __ATOMIC_CONSUME
    #define ma_atomic_memory_order_acquire                          __ATOMIC_ACQUIRE
    #define ma_atomic_memory_order_release                          __ATOMIC_RELEASE
    #define ma_atomic_memory_order_acq_rel                          __ATOMIC_ACQ_REL
    #define ma_atomic_memory_order_seq_cst                          __ATOMIC_SEQ_CST
    #define ma_atomic_compiler_fence()                              __asm__ __volatile__("":::"memory")
    #define ma_atomic_thread_fence(order)                           __atomic_thread_fence(order)
    #define ma_atomic_signal_fence(order)                           __atomic_signal_fence(order)
    #define ma_atomic_is_lock_free_8(ptr)                           __atomic_is_lock_free(1, ptr)
    #define ma_atomic_is_lock_free_16(ptr)                          __atomic_is_lock_free(2, ptr)
    #define ma_atomic_is_lock_free_32(ptr)                          __atomic_is_lock_free(4, ptr)
    #define ma_atomic_is_lock_free_64(ptr)                          __atomic_is_lock_free(8, ptr)
    #define ma_atomic_test_and_set_explicit_8( dst, order)          __atomic_exchange_n(dst, 1, order)
    #define ma_atomic_test_and_set_explicit_16(dst, order)          __atomic_exchange_n(dst, 1, order)
    #define ma_atomic_test_and_set_explicit_32(dst, order)          __atomic_exchange_n(dst, 1, order)
    #define ma_atomic_test_and_set_explicit_64(dst, order)          __atomic_exchange_n(dst, 1, order)
    #define ma_atomic_clear_explicit_8( dst, order)                 __atomic_store_n(dst, 0, order)
    #define ma_atomic_clear_explicit_16(dst, order)                 __atomic_store_n(dst, 0, order)
    #define ma_atomic_clear_explicit_32(dst, order)                 __atomic_store_n(dst, 0, order)
    #define ma_atomic_clear_explicit_64(dst, order)                 __atomic_store_n(dst, 0, order)
    #define ma_atomic_store_explicit_8( dst, src, order)            __atomic_store_n(dst, src, order)
    #define ma_atomic_store_explicit_16(dst, src, order)            __atomic_store_n(dst, src, order)
    #define ma_atomic_store_explicit_32(dst, src, order)            __atomic_store_n(dst, src, order)
    #define ma_atomic_store_explicit_64(dst, src, order)            __atomic_store_n(dst, src, order)
    #define ma_atomic_load_explicit_8( dst, order)                  __atomic_load_n(dst, order)
    #define ma_atomic_load_explicit_16(dst, order)                  __atomic_load_n(dst, order)
    #define ma_atomic_load_explicit_32(dst, order)                  __atomic_load_n(dst, order)
    #define ma_atomic_load_explicit_64(dst, order)                  __atomic_load_n(dst, order)
    #define ma_atomic_exchange_explicit_8( dst, src, order)         __atomic_exchange_n(dst, src, order)
    #define ma_atomic_exchange_explicit_16(dst, src, order)         __atomic_exchange_n(dst, src, order)
    #define ma_atomic_exchange_explicit_32(dst, src, order)         __atomic_exchange_n(dst, src, order)
    #define ma_atomic_exchange_explicit_64(dst, src, order)         __atomic_exchange_n(dst, src, order)
    #define ma_atomic_compare_exchange_strong_explicit_8( dst, expected, desired, successOrder, failureOrder)   __atomic_compare_exchange_n(dst, expected, desired, 0, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_strong_explicit_16(dst, expected, desired, successOrder, failureOrder)   __atomic_compare_exchange_n(dst, expected, desired, 0, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_strong_explicit_32(dst, expected, desired, successOrder, failureOrder)   __atomic_compare_exchange_n(dst, expected, desired, 0, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_strong_explicit_64(dst, expected, desired, successOrder, failureOrder)   __atomic_compare_exchange_n(dst, expected, desired, 0, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_8( dst, expected, desired, successOrder, failureOrder)     __atomic_compare_exchange_n(dst, expected, desired, 1, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_16(dst, expected, desired, successOrder, failureOrder)     __atomic_compare_exchange_n(dst, expected, desired, 1, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_32(dst, expected, desired, successOrder, failureOrder)     __atomic_compare_exchange_n(dst, expected, desired, 1, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_64(dst, expected, desired, successOrder, failureOrder)     __atomic_compare_exchange_n(dst, expected, desired, 1, successOrder, failureOrder)
    #define ma_atomic_fetch_add_explicit_8( dst, src, order)        __atomic_fetch_add(dst, src, order)
    #define ma_atomic_fetch_add_explicit_16(dst, src, order)        __atomic_fetch_add(dst, src, order)
    #define ma_atomic_fetch_add_explicit_32(dst, src, order)        __atomic_fetch_add(dst, src, order)
    #define ma_atomic_fetch_add_explicit_64(dst, src, order)        __atomic_fetch_add(dst, src, order)
    #define ma_atomic_fetch_sub_explicit_8( dst, src, order)        __atomic_fetch_sub(dst, src, order)
    #define ma_atomic_fetch_sub_explicit_16(dst, src, order)        __atomic_fetch_sub(dst, src, order)
    #define ma_atomic_fetch_sub_explicit_32(dst, src, order)        __atomic_fetch_sub(dst, src, order)
    #define ma_atomic_fetch_sub_explicit_64(dst, src, order)        __atomic_fetch_sub(dst, src, order)
    #define ma_atomic_fetch_or_explicit_8( dst, src, order)         __atomic_fetch_or(dst, src, order)
    #define ma_atomic_fetch_or_explicit_16(dst, src, order)         __atomic_fetch_or(dst, src, order)
    #define ma_atomic_fetch_or_explicit_32(dst, src, order)         __atomic_fetch_or(dst, src, order)
    #define ma_atomic_fetch_or_explicit_64(dst, src, order)         __atomic_fetch_or(dst, src, order)
    #define ma_atomic_fetch_xor_explicit_8( dst, src, order)        __atomic_fetch_xor(dst, src, order)
    #define ma_atomic_fetch_xor_explicit_16(dst, src, order)        __atomic_fetch_xor(dst, src, order)
    #define ma_atomic_fetch_xor_explicit_32(dst, src, order)        __atomic_fetch_xor(dst, src, order)
    #define ma_atomic_fetch_xor_explicit_64(dst, src, order)        __atomic_fetch_xor(dst, src, order)
    #define ma_atomic_fetch_and_explicit_8( dst, src, order)        __atomic_fetch_and(dst, src, order)
    #define ma_atomic_fetch_and_explicit_16(dst, src, order)        __atomic_fetch_and(dst, src, order)
    #define ma_atomic_fetch_and_explicit_32(dst, src, order)        __atomic_fetch_and(dst, src, order)
    #define ma_atomic_fetch_and_explicit_64(dst, src, order)        __atomic_fetch_and(dst, src, order)
    static MA_INLINE ma_uint8 ma_atomic_compare_and_swap_8(volatile ma_uint8* dst, ma_uint8 expected, ma_uint8 desired)
    {
        __atomic_compare_exchange_n(dst, &expected, desired, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
        return expected;
    }
    static MA_INLINE ma_uint16 ma_atomic_compare_and_swap_16(volatile ma_uint16* dst, ma_uint16 expected, ma_uint16 desired)
    {
        __atomic_compare_exchange_n(dst, &expected, desired, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
        return expected;
    }
    static MA_INLINE ma_uint32 ma_atomic_compare_and_swap_32(volatile ma_uint32* dst, ma_uint32 expected, ma_uint32 desired)
    {
        __atomic_compare_exchange_n(dst, &expected, desired, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
        return expected;
    }
    #if defined(__clang__)
        #pragma clang diagnostic push
        #if __clang_major__ >= 8
            #pragma clang diagnostic ignored "-Watomic-alignment"
        #endif
    #endif
    static MA_INLINE ma_uint64 ma_atomic_compare_and_swap_64(volatile ma_uint64* dst, ma_uint64 expected, ma_uint64 desired)
    {
        __atomic_compare_exchange_n(dst, &expected, desired, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
        return expected;
    }
    #if defined(__clang__)
        #pragma clang diagnostic pop
    #endif
    typedef ma_uint8 ma_atomic_flag;
    #define ma_atomic_flag_test_and_set_explicit(dst, order)        (ma_bool32)__atomic_test_and_set(dst, order)
    #define ma_atomic_flag_clear_explicit(dst, order)               __atomic_clear(dst, order)
    #define ma_atomic_flag_load_explicit(ptr, order)                ma_atomic_load_explicit_8(ptr, order)
#else
    #define ma_atomic_memory_order_relaxed  1
    #define ma_atomic_memory_order_consume  2
    #define ma_atomic_memory_order_acquire  3
    #define ma_atomic_memory_order_release  4
    #define ma_atomic_memory_order_acq_rel  5
    #define ma_atomic_memory_order_seq_cst  6
    #define ma_atomic_compiler_fence() __asm__ __volatile__("":::"memory")
    #if defined(__GNUC__)
        #define ma_atomic_thread_fence(order) __sync_synchronize(), (void)order
        static MA_INLINE ma_uint8 ma_atomic_exchange_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            if (order > ma_atomic_memory_order_acquire) {
                __sync_synchronize();
            }
            return __sync_lock_test_and_set(dst, src);
        }
        static MA_INLINE ma_uint16 ma_atomic_exchange_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 oldValue;
            do {
                oldValue = *dst;
            } while (__sync_val_compare_and_swap(dst, oldValue, src) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint32 ma_atomic_exchange_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 oldValue;
            do {
                oldValue = *dst;
            } while (__sync_val_compare_and_swap(dst, oldValue, src) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint64 ma_atomic_exchange_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            do {
                oldValue = *dst;
            } while (__sync_val_compare_and_swap(dst, oldValue, src) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_add_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_add(dst, src);
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_add_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_add(dst, src);
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_add_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_add(dst, src);
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_add_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_add(dst, src);
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_sub_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_sub(dst, src);
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_sub_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_sub(dst, src);
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_sub_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_sub(dst, src);
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_sub_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_sub(dst, src);
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_or_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_or(dst, src);
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_or_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_or(dst, src);
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_or_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_or(dst, src);
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_or_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_or(dst, src);
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_xor_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_xor(dst, src);
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_xor_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_xor(dst, src);
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_xor_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_xor(dst, src);
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_xor_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_xor(dst, src);
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_and_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_and(dst, src);
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_and_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_and(dst, src);
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_and_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_and(dst, src);
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_and_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            (void)order;
            return __sync_fetch_and_and(dst, src);
        }
        #define ma_atomic_compare_and_swap_8( dst, expected, desired)   __sync_val_compare_and_swap(dst, expected, desired)
        #define ma_atomic_compare_and_swap_16(dst, expected, desired)   __sync_val_compare_and_swap(dst, expected, desired)
        #define ma_atomic_compare_and_swap_32(dst, expected, desired)   __sync_val_compare_and_swap(dst, expected, desired)
        #define ma_atomic_compare_and_swap_64(dst, expected, desired)   __sync_val_compare_and_swap(dst, expected, desired)
    #else
        #if defined(MA_X86)
            #define ma_atomic_thread_fence(order) __asm__ __volatile__("lock; addl $0, (%%esp)" ::: "memory", "cc")
        #elif defined(MA_X64)
            #define ma_atomic_thread_fence(order) __asm__ __volatile__("lock; addq $0, (%%rsp)" ::: "memory", "cc")
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
        static MA_INLINE ma_uint8 ma_atomic_compare_and_swap_8(volatile ma_uint8* dst, ma_uint8 expected, ma_uint8 desired)
        {
            ma_uint8 result;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; cmpxchg %3, %0" : "+m"(*dst), "=a"(result) : "a"(expected), "d"(desired) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint16 ma_atomic_compare_and_swap_16(volatile ma_uint16* dst, ma_uint16 expected, ma_uint16 desired)
        {
            ma_uint16 result;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; cmpxchg %3, %0" : "+m"(*dst), "=a"(result) : "a"(expected), "d"(desired) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint32 ma_atomic_compare_and_swap_32(volatile ma_uint32* dst, ma_uint32 expected, ma_uint32 desired)
        {
            ma_uint32 result;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; cmpxchg %3, %0" : "+m"(*dst), "=a"(result) : "a"(expected), "d"(desired) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint64 ma_atomic_compare_and_swap_64(volatile ma_uint64* dst, ma_uint64 expected, ma_uint64 desired)
        {
            volatile ma_uint64 result;
        #if defined(MA_X86)
            ma_uint32 resultEAX;
            ma_uint32 resultEDX;
            __asm__ __volatile__("push %%ebx; xchg %5, %%ebx; lock; cmpxchg8b %0; pop %%ebx" : "+m"(*dst), "=a"(resultEAX), "=d"(resultEDX) : "a"(expected & 0xFFFFFFFF), "d"(expected >> 32), "r"(desired & 0xFFFFFFFF), "c"(desired >> 32) : "cc");
            result = ((ma_uint64)resultEDX << 32) | resultEAX;
        #elif defined(MA_X64)
            __asm__ __volatile__("lock; cmpxchg %3, %0" : "+m"(*dst), "=a"(result) : "a"(expected), "d"(desired) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint8 ma_atomic_exchange_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 result = 0;
            (void)order;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; xchg %1, %0" : "+m"(*dst), "=a"(result) : "a"(src));
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint16 ma_atomic_exchange_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 result = 0;
            (void)order;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; xchg %1, %0" : "+m"(*dst), "=a"(result) : "a"(src));
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint32 ma_atomic_exchange_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 result;
            (void)order;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; xchg %1, %0" : "+m"(*dst), "=a"(result) : "a"(src));
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint64 ma_atomic_exchange_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 result;
            (void)order;
        #if defined(MA_X86)
            do {
                result = *dst;
            } while (ma_atomic_compare_and_swap_64(dst, result, src) != result);
        #elif defined(MA_X64)
            __asm__ __volatile__("lock; xchg %1, %0" : "+m"(*dst), "=a"(result) : "a"(src));
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_add_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 result;
            (void)order;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; xadd %1, %0" : "+m"(*dst), "=a"(result) : "a"(src) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_add_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 result;
            (void)order;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; xadd %1, %0" : "+m"(*dst), "=a"(result) : "a"(src) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_add_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 result;
            (void)order;
        #if defined(MA_X86) || defined(MA_X64)
            __asm__ __volatile__("lock; xadd %1, %0" : "+m"(*dst), "=a"(result) : "a"(src) : "cc");
        #else
            #error Unsupported architecture. Please submit a feature request.
        #endif
            return result;
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_add_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
        #if defined(MA_X86)
            ma_uint64 oldValue;
            ma_uint64 newValue;
            (void)order;
            do {
                oldValue = *dst;
                newValue = oldValue + src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            return oldValue;
        #elif defined(MA_X64)
            ma_uint64 result;
            (void)order;
            __asm__ __volatile__("lock; xadd %1, %0" : "+m"(*dst), "=a"(result) : "a"(src) : "cc");
            return result;
        #endif
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_sub_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue - src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_sub_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue - src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_sub_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue - src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_sub_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue - src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_and_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue & src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_and_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue & src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_and_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue & src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_and_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue & src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_xor_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue ^ src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_xor_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue ^ src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_xor_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue ^ src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_xor_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue ^ src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint8 ma_atomic_fetch_or_explicit_8(volatile ma_uint8* dst, ma_uint8 src, ma_atomic_memory_order order)
        {
            ma_uint8 oldValue;
            ma_uint8 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint8)(oldValue | src);
            } while (ma_atomic_compare_and_swap_8(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint16 ma_atomic_fetch_or_explicit_16(volatile ma_uint16* dst, ma_uint16 src, ma_atomic_memory_order order)
        {
            ma_uint16 oldValue;
            ma_uint16 newValue;
            do {
                oldValue = *dst;
                newValue = (ma_uint16)(oldValue | src);
            } while (ma_atomic_compare_and_swap_16(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint32 ma_atomic_fetch_or_explicit_32(volatile ma_uint32* dst, ma_uint32 src, ma_atomic_memory_order order)
        {
            ma_uint32 oldValue;
            ma_uint32 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue | src;
            } while (ma_atomic_compare_and_swap_32(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
        static MA_INLINE ma_uint64 ma_atomic_fetch_or_explicit_64(volatile ma_uint64* dst, ma_uint64 src, ma_atomic_memory_order order)
        {
            ma_uint64 oldValue;
            ma_uint64 newValue;
            do {
                oldValue = *dst;
                newValue = oldValue | src;
            } while (ma_atomic_compare_and_swap_64(dst, oldValue, newValue) != oldValue);
            (void)order;
            return oldValue;
        }
    #endif
    #define ma_atomic_signal_fence(order)                           ma_atomic_thread_fence(order)
    static MA_INLINE ma_uint8 ma_atomic_load_explicit_8(volatile const ma_uint8* ptr, ma_atomic_memory_order order)
    {
        (void)order;
        return ma_atomic_compare_and_swap_8((ma_uint8*)ptr, 0, 0);
    }
    static MA_INLINE ma_uint16 ma_atomic_load_explicit_16(volatile const ma_uint16* ptr, ma_atomic_memory_order order)
    {
        (void)order;
        return ma_atomic_compare_and_swap_16((ma_uint16*)ptr, 0, 0);
    }
    static MA_INLINE ma_uint32 ma_atomic_load_explicit_32(volatile const ma_uint32* ptr, ma_atomic_memory_order order)
    {
        (void)order;
        return ma_atomic_compare_and_swap_32((ma_uint32*)ptr, 0, 0);
    }
    static MA_INLINE ma_uint64 ma_atomic_load_explicit_64(volatile const ma_uint64* ptr, ma_atomic_memory_order order)
    {
        (void)order;
        return ma_atomic_compare_and_swap_64((ma_uint64*)ptr, 0, 0);
    }
    #define ma_atomic_store_explicit_8( dst, src, order)            (void)ma_atomic_exchange_explicit_8 (dst, src, order)
    #define ma_atomic_store_explicit_16(dst, src, order)            (void)ma_atomic_exchange_explicit_16(dst, src, order)
    #define ma_atomic_store_explicit_32(dst, src, order)            (void)ma_atomic_exchange_explicit_32(dst, src, order)
    #define ma_atomic_store_explicit_64(dst, src, order)            (void)ma_atomic_exchange_explicit_64(dst, src, order)
    #define ma_atomic_test_and_set_explicit_8( dst, order)          ma_atomic_exchange_explicit_8 (dst, 1, order)
    #define ma_atomic_test_and_set_explicit_16(dst, order)          ma_atomic_exchange_explicit_16(dst, 1, order)
    #define ma_atomic_test_and_set_explicit_32(dst, order)          ma_atomic_exchange_explicit_32(dst, 1, order)
    #define ma_atomic_test_and_set_explicit_64(dst, order)          ma_atomic_exchange_explicit_64(dst, 1, order)
    #define ma_atomic_clear_explicit_8( dst, order)                 ma_atomic_store_explicit_8 (dst, 0, order)
    #define ma_atomic_clear_explicit_16(dst, order)                 ma_atomic_store_explicit_16(dst, 0, order)
    #define ma_atomic_clear_explicit_32(dst, order)                 ma_atomic_store_explicit_32(dst, 0, order)
    #define ma_atomic_clear_explicit_64(dst, order)                 ma_atomic_store_explicit_64(dst, 0, order)
    typedef ma_uint8 ma_atomic_flag;
    #define ma_atomic_flag_test_and_set_explicit(ptr, order)        (ma_bool32)ma_atomic_test_and_set_explicit_8(ptr, order)
    #define ma_atomic_flag_clear_explicit(ptr, order)               ma_atomic_clear_explicit_8(ptr, order)
    #define ma_atomic_flag_load_explicit(ptr, order)                ma_atomic_load_explicit_8(ptr, order)
#endif
#if !defined(MA_ATOMIC_HAS_NATIVE_COMPARE_EXCHANGE)
    #if defined(MA_ATOMIC_HAS_8)
        static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_8(volatile ma_uint8* dst, ma_uint8* expected, ma_uint8 desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
        {
            ma_uint8 expectedValue;
            ma_uint8 result;
            (void)successOrder;
            (void)failureOrder;
            expectedValue = ma_atomic_load_explicit_8(expected, ma_atomic_memory_order_seq_cst);
            result = ma_atomic_compare_and_swap_8(dst, expectedValue, desired);
            if (result == expectedValue) {
                return 1;
            } else {
                ma_atomic_store_explicit_8(expected, result, failureOrder);
                return 0;
            }
        }
    #endif
    #if defined(MA_ATOMIC_HAS_16)
        static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_16(volatile ma_uint16* dst, ma_uint16* expected, ma_uint16 desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
        {
            ma_uint16 expectedValue;
            ma_uint16 result;
            (void)successOrder;
            (void)failureOrder;
            expectedValue = ma_atomic_load_explicit_16(expected, ma_atomic_memory_order_seq_cst);
            result = ma_atomic_compare_and_swap_16(dst, expectedValue, desired);
            if (result == expectedValue) {
                return 1;
            } else {
                ma_atomic_store_explicit_16(expected, result, failureOrder);
                return 0;
            }
        }
    #endif
    #if defined(MA_ATOMIC_HAS_32)
        static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_32(volatile ma_uint32* dst, ma_uint32* expected, ma_uint32 desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
        {
            ma_uint32 expectedValue;
            ma_uint32 result;
            (void)successOrder;
            (void)failureOrder;
            expectedValue = ma_atomic_load_explicit_32(expected, ma_atomic_memory_order_seq_cst);
            result = ma_atomic_compare_and_swap_32(dst, expectedValue, desired);
            if (result == expectedValue) {
                return 1;
            } else {
                ma_atomic_store_explicit_32(expected, result, failureOrder);
                return 0;
            }
        }
    #endif
    #if defined(MA_ATOMIC_HAS_64)
        static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_64(volatile ma_uint64* dst, volatile ma_uint64* expected, ma_uint64 desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
        {
            ma_uint64 expectedValue;
            ma_uint64 result;
            (void)successOrder;
            (void)failureOrder;
            expectedValue = ma_atomic_load_explicit_64(expected, ma_atomic_memory_order_seq_cst);
            result = ma_atomic_compare_and_swap_64(dst, expectedValue, desired);
            if (result == expectedValue) {
                return 1;
            } else {
                ma_atomic_store_explicit_64(expected, result, failureOrder);
                return 0;
            }
        }
    #endif
    #define ma_atomic_compare_exchange_weak_explicit_8( dst, expected, desired, successOrder, failureOrder) ma_atomic_compare_exchange_strong_explicit_8 (dst, expected, desired, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_16(dst, expected, desired, successOrder, failureOrder) ma_atomic_compare_exchange_strong_explicit_16(dst, expected, desired, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_32(dst, expected, desired, successOrder, failureOrder) ma_atomic_compare_exchange_strong_explicit_32(dst, expected, desired, successOrder, failureOrder)
    #define ma_atomic_compare_exchange_weak_explicit_64(dst, expected, desired, successOrder, failureOrder) ma_atomic_compare_exchange_strong_explicit_64(dst, expected, desired, successOrder, failureOrder)
#endif
#if !defined(MA_ATOMIC_HAS_NATIVE_IS_LOCK_FREE)
    static MA_INLINE ma_bool32 ma_atomic_is_lock_free_8(volatile void* ptr)
    {
        (void)ptr;
        return 1;
    }
    static MA_INLINE ma_bool32 ma_atomic_is_lock_free_16(volatile void* ptr)
    {
        (void)ptr;
        return 1;
    }
    static MA_INLINE ma_bool32 ma_atomic_is_lock_free_32(volatile void* ptr)
    {
        (void)ptr;
        return 1;
    }
    static MA_INLINE ma_bool32 ma_atomic_is_lock_free_64(volatile void* ptr)
    {
        (void)ptr;
    #if defined(MA_64BIT)
        return 1;
    #else
        #if defined(MA_X86) || defined(MA_X64)
            return 1;
        #else
            return 0;
        #endif
    #endif
    }
#endif
#if defined(MA_64BIT)
    static MA_INLINE ma_bool32 ma_atomic_is_lock_free_ptr(volatile void** ptr)
    {
        return ma_atomic_is_lock_free_64((volatile ma_uint64*)ptr);
    }
    static MA_INLINE void* ma_atomic_load_explicit_ptr(volatile void** ptr, ma_atomic_memory_order order)
    {
        return (void*)ma_atomic_load_explicit_64((volatile ma_uint64*)ptr, order);
    }
    static MA_INLINE void ma_atomic_store_explicit_ptr(volatile void** dst, void* src, ma_atomic_memory_order order)
    {
        ma_atomic_store_explicit_64((volatile ma_uint64*)dst, (ma_uint64)src, order);
    }
    static MA_INLINE void* ma_atomic_exchange_explicit_ptr(volatile void** dst, void* src, ma_atomic_memory_order order)
    {
        return (void*)ma_atomic_exchange_explicit_64((volatile ma_uint64*)dst, (ma_uint64)src, order);
    }
    static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_ptr(volatile void** dst, void** expected, void* desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
    {
        return ma_atomic_compare_exchange_strong_explicit_64((volatile ma_uint64*)dst, (ma_uint64*)expected, (ma_uint64)desired, successOrder, failureOrder);
    }
    static MA_INLINE ma_bool32 ma_atomic_compare_exchange_weak_explicit_ptr(volatile void** dst, void** expected, void* desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
    {
        return ma_atomic_compare_exchange_weak_explicit_64((volatile ma_uint64*)dst, (ma_uint64*)expected, (ma_uint64)desired, successOrder, failureOrder);
    }
    static MA_INLINE void* ma_atomic_compare_and_swap_ptr(volatile void** dst, void* expected, void* desired)
    {
        return (void*)ma_atomic_compare_and_swap_64((volatile ma_uint64*)dst, (ma_uint64)expected, (ma_uint64)desired);
    }
#elif defined(MA_32BIT)
    static MA_INLINE ma_bool32 ma_atomic_is_lock_free_ptr(volatile void** ptr)
    {
        return ma_atomic_is_lock_free_32((volatile ma_uint32*)ptr);
    }
    static MA_INLINE void* ma_atomic_load_explicit_ptr(volatile void** ptr, ma_atomic_memory_order order)
    {
        return (void*)ma_atomic_load_explicit_32((volatile ma_uint32*)ptr, order);
    }
    static MA_INLINE void ma_atomic_store_explicit_ptr(volatile void** dst, void* src, ma_atomic_memory_order order)
    {
        ma_atomic_store_explicit_32((volatile ma_uint32*)dst, (ma_uint32)src, order);
    }
    static MA_INLINE void* ma_atomic_exchange_explicit_ptr(volatile void** dst, void* src, ma_atomic_memory_order order)
    {
        return (void*)ma_atomic_exchange_explicit_32((volatile ma_uint32*)dst, (ma_uint32)src, order);
    }
    static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_ptr(volatile void** dst, void** expected, void* desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
    {
        return ma_atomic_compare_exchange_strong_explicit_32((volatile ma_uint32*)dst, (ma_uint32*)expected, (ma_uint32)desired, successOrder, failureOrder);
    }
    static MA_INLINE ma_bool32 ma_atomic_compare_exchange_weak_explicit_ptr(volatile void** dst, void** expected, void* desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
    {
        return ma_atomic_compare_exchange_weak_explicit_32((volatile ma_uint32*)dst, (ma_uint32*)expected, (ma_uint32)desired, successOrder, failureOrder);
    }
    static MA_INLINE void* ma_atomic_compare_and_swap_ptr(volatile void** dst, void* expected, void* desired)
    {
        return (void*)ma_atomic_compare_and_swap_32((volatile ma_uint32*)dst, (ma_uint32)expected, (ma_uint32)desired);
    }
#else
    #error Unsupported architecture.
#endif
#define ma_atomic_flag_test_and_set(ptr)                                ma_atomic_flag_test_and_set_explicit(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_flag_clear(ptr)                                       ma_atomic_flag_clear_explicit(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_ptr(dst, src)                                   ma_atomic_store_explicit_ptr((volatile void**)dst, (void*)src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_ptr(ptr)                                         ma_atomic_load_explicit_ptr((volatile void**)ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_ptr(dst, src)                                ma_atomic_exchange_explicit_ptr((volatile void**)dst, (void*)src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_ptr(dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_ptr((volatile void**)dst, (void**)expected, (void*)desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_ptr(dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_ptr((volatile void**)dst, (void**)expected, (void*)desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_8( ptr)                                  ma_atomic_test_and_set_explicit_8( ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_16(ptr)                                  ma_atomic_test_and_set_explicit_16(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_32(ptr)                                  ma_atomic_test_and_set_explicit_32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_64(ptr)                                  ma_atomic_test_and_set_explicit_64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_8( ptr)                                         ma_atomic_clear_explicit_8( ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_16(ptr)                                         ma_atomic_clear_explicit_16(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_32(ptr)                                         ma_atomic_clear_explicit_32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_64(ptr)                                         ma_atomic_clear_explicit_64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_8( dst, src)                                    ma_atomic_store_explicit_8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_16(dst, src)                                    ma_atomic_store_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_32(dst, src)                                    ma_atomic_store_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_64(dst, src)                                    ma_atomic_store_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_8( ptr)                                          ma_atomic_load_explicit_8( ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_16(ptr)                                          ma_atomic_load_explicit_16(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_32(ptr)                                          ma_atomic_load_explicit_32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_64(ptr)                                          ma_atomic_load_explicit_64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_8( dst, src)                                 ma_atomic_exchange_explicit_8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_16(dst, src)                                 ma_atomic_exchange_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_32(dst, src)                                 ma_atomic_exchange_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_64(dst, src)                                 ma_atomic_exchange_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_8( dst, expected, desired)    ma_atomic_compare_exchange_strong_explicit_8( dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_16(dst, expected, desired)    ma_atomic_compare_exchange_strong_explicit_16(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_32(dst, expected, desired)    ma_atomic_compare_exchange_strong_explicit_32(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_64(dst, expected, desired)    ma_atomic_compare_exchange_strong_explicit_64(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_8(  dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_8( dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_16( dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_16(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_32( dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_32(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_64( dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_64(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_8( dst, src)                                ma_atomic_fetch_add_explicit_8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_16(dst, src)                                ma_atomic_fetch_add_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_32(dst, src)                                ma_atomic_fetch_add_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_64(dst, src)                                ma_atomic_fetch_add_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_8( dst, src)                                ma_atomic_fetch_sub_explicit_8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_16(dst, src)                                ma_atomic_fetch_sub_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_32(dst, src)                                ma_atomic_fetch_sub_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_64(dst, src)                                ma_atomic_fetch_sub_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_8( dst, src)                                 ma_atomic_fetch_or_explicit_8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_16(dst, src)                                 ma_atomic_fetch_or_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_32(dst, src)                                 ma_atomic_fetch_or_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_64(dst, src)                                 ma_atomic_fetch_or_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_8( dst, src)                                ma_atomic_fetch_xor_explicit_8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_16(dst, src)                                ma_atomic_fetch_xor_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_32(dst, src)                                ma_atomic_fetch_xor_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_64(dst, src)                                ma_atomic_fetch_xor_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_8( dst, src)                                ma_atomic_fetch_and_explicit_8 (dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_16(dst, src)                                ma_atomic_fetch_and_explicit_16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_32(dst, src)                                ma_atomic_fetch_and_explicit_32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_64(dst, src)                                ma_atomic_fetch_and_explicit_64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_explicit_i8( ptr, order)                 (ma_int8 )ma_atomic_test_and_set_explicit_8( (ma_uint8* )ptr, order)
#define ma_atomic_test_and_set_explicit_i16(ptr, order)                 (ma_int16)ma_atomic_test_and_set_explicit_16((ma_uint16*)ptr, order)
#define ma_atomic_test_and_set_explicit_i32(ptr, order)                 (ma_int32)ma_atomic_test_and_set_explicit_32((ma_uint32*)ptr, order)
#define ma_atomic_test_and_set_explicit_i64(ptr, order)                 (ma_int64)ma_atomic_test_and_set_explicit_64((ma_uint64*)ptr, order)
#define ma_atomic_clear_explicit_i8( ptr, order)                        ma_atomic_clear_explicit_8( (ma_uint8* )ptr, order)
#define ma_atomic_clear_explicit_i16(ptr, order)                        ma_atomic_clear_explicit_16((ma_uint16*)ptr, order)
#define ma_atomic_clear_explicit_i32(ptr, order)                        ma_atomic_clear_explicit_32((ma_uint32*)ptr, order)
#define ma_atomic_clear_explicit_i64(ptr, order)                        ma_atomic_clear_explicit_64((ma_uint64*)ptr, order)
#define ma_atomic_store_explicit_i8( dst, src, order)                   ma_atomic_store_explicit_8( (ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_store_explicit_i16(dst, src, order)                   ma_atomic_store_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_store_explicit_i32(dst, src, order)                   ma_atomic_store_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_store_explicit_i64(dst, src, order)                   ma_atomic_store_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_load_explicit_i8( ptr, order)                         (ma_int8 )ma_atomic_load_explicit_8( (ma_uint8* )ptr, order)
#define ma_atomic_load_explicit_i16(ptr, order)                         (ma_int16)ma_atomic_load_explicit_16((ma_uint16*)ptr, order)
#define ma_atomic_load_explicit_i32(ptr, order)                         (ma_int32)ma_atomic_load_explicit_32((ma_uint32*)ptr, order)
#define ma_atomic_load_explicit_i64(ptr, order)                         (ma_int64)ma_atomic_load_explicit_64((ma_uint64*)ptr, order)
#define ma_atomic_exchange_explicit_i8( dst, src, order)                (ma_int8 )ma_atomic_exchange_explicit_8 ((ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_exchange_explicit_i16(dst, src, order)                (ma_int16)ma_atomic_exchange_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_exchange_explicit_i32(dst, src, order)                (ma_int32)ma_atomic_exchange_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_exchange_explicit_i64(dst, src, order)                (ma_int64)ma_atomic_exchange_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_compare_exchange_strong_explicit_i8( dst, expected, desired, successOrder, failureOrder)  ma_atomic_compare_exchange_strong_explicit_8( (ma_uint8* )dst, (ma_uint8* )expected, (ma_uint8 )desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_strong_explicit_i16(dst, expected, desired, successOrder, failureOrder)  ma_atomic_compare_exchange_strong_explicit_16((ma_uint16*)dst, (ma_uint16*)expected, (ma_uint16)desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_strong_explicit_i32(dst, expected, desired, successOrder, failureOrder)  ma_atomic_compare_exchange_strong_explicit_32((ma_uint32*)dst, (ma_uint32*)expected, (ma_uint32)desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_strong_explicit_i64(dst, expected, desired, successOrder, failureOrder)  ma_atomic_compare_exchange_strong_explicit_64((ma_uint64*)dst, (ma_uint64*)expected, (ma_uint64)desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_weak_explicit_i8( dst, expected, desired, successOrder, failureOrder)    ma_atomic_compare_exchange_weak_explicit_8( (ma_uint8* )dst, (ma_uint8* )expected, (ma_uint8 )desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_weak_explicit_i16(dst, expected, desired, successOrder, failureOrder)    ma_atomic_compare_exchange_weak_explicit_16((ma_uint16*)dst, (ma_uint16*)expected, (ma_uint16)desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_weak_explicit_i32(dst, expected, desired, successOrder, failureOrder)    ma_atomic_compare_exchange_weak_explicit_32((ma_uint32*)dst, (ma_uint32*)expected, (ma_uint32)desired, successOrder, failureOrder)
#define ma_atomic_compare_exchange_weak_explicit_i64(dst, expected, desired, successOrder, failureOrder)    ma_atomic_compare_exchange_weak_explicit_64((ma_uint64*)dst, (ma_uint64*)expected, (ma_uint64)desired, successOrder, failureOrder)
#define ma_atomic_fetch_add_explicit_i8( dst, src, order)               (ma_int8 )ma_atomic_fetch_add_explicit_8( (ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_fetch_add_explicit_i16(dst, src, order)               (ma_int16)ma_atomic_fetch_add_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_fetch_add_explicit_i32(dst, src, order)               (ma_int32)ma_atomic_fetch_add_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_fetch_add_explicit_i64(dst, src, order)               (ma_int64)ma_atomic_fetch_add_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_fetch_sub_explicit_i8( dst, src, order)               (ma_int8 )ma_atomic_fetch_sub_explicit_8( (ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_fetch_sub_explicit_i16(dst, src, order)               (ma_int16)ma_atomic_fetch_sub_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_fetch_sub_explicit_i32(dst, src, order)               (ma_int32)ma_atomic_fetch_sub_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_fetch_sub_explicit_i64(dst, src, order)               (ma_int64)ma_atomic_fetch_sub_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_fetch_or_explicit_i8( dst, src, order)                (ma_int8 )ma_atomic_fetch_or_explicit_8( (ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_fetch_or_explicit_i16(dst, src, order)                (ma_int16)ma_atomic_fetch_or_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_fetch_or_explicit_i32(dst, src, order)                (ma_int32)ma_atomic_fetch_or_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_fetch_or_explicit_i64(dst, src, order)                (ma_int64)ma_atomic_fetch_or_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_fetch_xor_explicit_i8( dst, src, order)               (ma_int8 )ma_atomic_fetch_xor_explicit_8( (ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_fetch_xor_explicit_i16(dst, src, order)               (ma_int16)ma_atomic_fetch_xor_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_fetch_xor_explicit_i32(dst, src, order)               (ma_int32)ma_atomic_fetch_xor_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_fetch_xor_explicit_i64(dst, src, order)               (ma_int64)ma_atomic_fetch_xor_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_fetch_and_explicit_i8( dst, src, order)               (ma_int8 )ma_atomic_fetch_and_explicit_8( (ma_uint8* )dst, (ma_uint8 )src, order)
#define ma_atomic_fetch_and_explicit_i16(dst, src, order)               (ma_int16)ma_atomic_fetch_and_explicit_16((ma_uint16*)dst, (ma_uint16)src, order)
#define ma_atomic_fetch_and_explicit_i32(dst, src, order)               (ma_int32)ma_atomic_fetch_and_explicit_32((ma_uint32*)dst, (ma_uint32)src, order)
#define ma_atomic_fetch_and_explicit_i64(dst, src, order)               (ma_int64)ma_atomic_fetch_and_explicit_64((ma_uint64*)dst, (ma_uint64)src, order)
#define ma_atomic_test_and_set_i8( ptr)                                 ma_atomic_test_and_set_explicit_i8( ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_i16(ptr)                                 ma_atomic_test_and_set_explicit_i16(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_i32(ptr)                                 ma_atomic_test_and_set_explicit_i32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_test_and_set_i64(ptr)                                 ma_atomic_test_and_set_explicit_i64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_i8( ptr)                                        ma_atomic_clear_explicit_i8( ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_i16(ptr)                                        ma_atomic_clear_explicit_i16(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_i32(ptr)                                        ma_atomic_clear_explicit_i32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_i64(ptr)                                        ma_atomic_clear_explicit_i64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_i8( dst, src)                                   ma_atomic_store_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_i16(dst, src)                                   ma_atomic_store_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_i32(dst, src)                                   ma_atomic_store_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_i64(dst, src)                                   ma_atomic_store_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_i8( ptr)                                         ma_atomic_load_explicit_i8( ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_i16(ptr)                                         ma_atomic_load_explicit_i16(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_i32(ptr)                                         ma_atomic_load_explicit_i32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_i64(ptr)                                         ma_atomic_load_explicit_i64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_i8( dst, src)                                ma_atomic_exchange_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_i16(dst, src)                                ma_atomic_exchange_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_i32(dst, src)                                ma_atomic_exchange_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_i64(dst, src)                                ma_atomic_exchange_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_i8( dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_i8( dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_i16(dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_i16(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_i32(dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_i32(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_i64(dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_i64(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_i8( dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_i8( dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_i16(dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_i16(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_i32(dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_i32(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_i64(dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_i64(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_i8( dst, src)                               ma_atomic_fetch_add_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_i16(dst, src)                               ma_atomic_fetch_add_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_i32(dst, src)                               ma_atomic_fetch_add_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_i64(dst, src)                               ma_atomic_fetch_add_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_i8( dst, src)                               ma_atomic_fetch_sub_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_i16(dst, src)                               ma_atomic_fetch_sub_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_i32(dst, src)                               ma_atomic_fetch_sub_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_i64(dst, src)                               ma_atomic_fetch_sub_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_i8( dst, src)                                ma_atomic_fetch_or_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_i16(dst, src)                                ma_atomic_fetch_or_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_i32(dst, src)                                ma_atomic_fetch_or_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_i64(dst, src)                                ma_atomic_fetch_or_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_i8( dst, src)                               ma_atomic_fetch_xor_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_i16(dst, src)                               ma_atomic_fetch_xor_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_i32(dst, src)                               ma_atomic_fetch_xor_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_i64(dst, src)                               ma_atomic_fetch_xor_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_i8( dst, src)                               ma_atomic_fetch_and_explicit_i8( dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_i16(dst, src)                               ma_atomic_fetch_and_explicit_i16(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_i32(dst, src)                               ma_atomic_fetch_and_explicit_i32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_i64(dst, src)                               ma_atomic_fetch_and_explicit_i64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_and_swap_i8( dst, expected, dedsired)         (ma_int8 )ma_atomic_compare_and_swap_8( (ma_uint8* )dst, (ma_uint8 )expected, (ma_uint8 )dedsired)
#define ma_atomic_compare_and_swap_i16(dst, expected, dedsired)         (ma_int16)ma_atomic_compare_and_swap_16((ma_uint16*)dst, (ma_uint16)expected, (ma_uint16)dedsired)
#define ma_atomic_compare_and_swap_i32(dst, expected, dedsired)         (ma_int32)ma_atomic_compare_and_swap_32((ma_uint32*)dst, (ma_uint32)expected, (ma_uint32)dedsired)
#define ma_atomic_compare_and_swap_i64(dst, expected, dedsired)         (ma_int64)ma_atomic_compare_and_swap_64((ma_uint64*)dst, (ma_uint64)expected, (ma_uint64)dedsired)
typedef union
{
    ma_uint32 i;
    float f;
} ma_atomic_if32;
typedef union
{
    ma_uint64 i;
    double f;
} ma_atomic_if64;
#define ma_atomic_clear_explicit_f32(ptr, order)                        ma_atomic_clear_explicit_32((ma_uint32*)ptr, order)
#define ma_atomic_clear_explicit_f64(ptr, order)                        ma_atomic_clear_explicit_64((ma_uint64*)ptr, order)
static MA_INLINE void ma_atomic_store_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 x;
    x.f = src;
    ma_atomic_store_explicit_32((volatile ma_uint32*)dst, x.i, order);
}
static MA_INLINE void ma_atomic_store_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 x;
    x.f = src;
    ma_atomic_store_explicit_64((volatile ma_uint64*)dst, x.i, order);
}
static MA_INLINE float ma_atomic_load_explicit_f32(volatile const float* ptr, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    r.i = ma_atomic_load_explicit_32((volatile const ma_uint32*)ptr, order);
    return r.f;
}
static MA_INLINE double ma_atomic_load_explicit_f64(volatile const double* ptr, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    r.i = ma_atomic_load_explicit_64((volatile const ma_uint64*)ptr, order);
    return r.f;
}
static MA_INLINE float ma_atomic_exchange_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    ma_atomic_if32 x;
    x.f = src;
    r.i = ma_atomic_exchange_explicit_32((volatile ma_uint32*)dst, x.i, order);
    return r.f;
}
static MA_INLINE double ma_atomic_exchange_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    ma_atomic_if64 x;
    x.f = src;
    r.i = ma_atomic_exchange_explicit_64((volatile ma_uint64*)dst, x.i, order);
    return r.f;
}
static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_f32(volatile float* dst, float* expected, float desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
{
    ma_atomic_if32 d;
    d.f = desired;
    return ma_atomic_compare_exchange_strong_explicit_32((volatile ma_uint32*)dst, (ma_uint32*)expected, d.i, successOrder, failureOrder);
}
static MA_INLINE ma_bool32 ma_atomic_compare_exchange_strong_explicit_f64(volatile double* dst, double* expected, double desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
{
    ma_atomic_if64 d;
    d.f = desired;
    return ma_atomic_compare_exchange_strong_explicit_64((volatile ma_uint64*)dst, (ma_uint64*)expected, d.i, successOrder, failureOrder);
}
static MA_INLINE ma_bool32 ma_atomic_compare_exchange_weak_explicit_f32(volatile float* dst, float* expected, float desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
{
    ma_atomic_if32 d;
    d.f = desired;
    return ma_atomic_compare_exchange_weak_explicit_32((volatile ma_uint32*)dst, (ma_uint32*)expected, d.i, successOrder, failureOrder);
}
static MA_INLINE ma_bool32 ma_atomic_compare_exchange_weak_explicit_f64(volatile double* dst, double* expected, double desired, ma_atomic_memory_order successOrder, ma_atomic_memory_order failureOrder)
{
    ma_atomic_if64 d;
    d.f = desired;
    return ma_atomic_compare_exchange_weak_explicit_64((volatile ma_uint64*)dst, (ma_uint64*)expected, d.i, successOrder, failureOrder);
}
static MA_INLINE float ma_atomic_fetch_add_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    ma_atomic_if32 x;
    x.f = src;
    r.i = ma_atomic_fetch_add_explicit_32((volatile ma_uint32*)dst, x.i, order);
    return r.f;
}
static MA_INLINE double ma_atomic_fetch_add_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    ma_atomic_if64 x;
    x.f = src;
    r.i = ma_atomic_fetch_add_explicit_64((volatile ma_uint64*)dst, x.i, order);
    return r.f;
}
static MA_INLINE float ma_atomic_fetch_sub_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    ma_atomic_if32 x;
    x.f = src;
    r.i = ma_atomic_fetch_sub_explicit_32((volatile ma_uint32*)dst, x.i, order);
    return r.f;
}
static MA_INLINE double ma_atomic_fetch_sub_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    ma_atomic_if64 x;
    x.f = src;
    r.i = ma_atomic_fetch_sub_explicit_64((volatile ma_uint64*)dst, x.i, order);
    return r.f;
}
static MA_INLINE float ma_atomic_fetch_or_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    ma_atomic_if32 x;
    x.f = src;
    r.i = ma_atomic_fetch_or_explicit_32((volatile ma_uint32*)dst, x.i, order);
    return r.f;
}
static MA_INLINE double ma_atomic_fetch_or_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    ma_atomic_if64 x;
    x.f = src;
    r.i = ma_atomic_fetch_or_explicit_64((volatile ma_uint64*)dst, x.i, order);
    return r.f;
}
static MA_INLINE float ma_atomic_fetch_xor_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    ma_atomic_if32 x;
    x.f = src;
    r.i = ma_atomic_fetch_xor_explicit_32((volatile ma_uint32*)dst, x.i, order);
    return r.f;
}
static MA_INLINE double ma_atomic_fetch_xor_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    ma_atomic_if64 x;
    x.f = src;
    r.i = ma_atomic_fetch_xor_explicit_64((volatile ma_uint64*)dst, x.i, order);
    return r.f;
}
static MA_INLINE float ma_atomic_fetch_and_explicit_f32(volatile float* dst, float src, ma_atomic_memory_order order)
{
    ma_atomic_if32 r;
    ma_atomic_if32 x;
    x.f = src;
    r.i = ma_atomic_fetch_and_explicit_32((volatile ma_uint32*)dst, x.i, order);
    return r.f;
}
static MA_INLINE double ma_atomic_fetch_and_explicit_f64(volatile double* dst, double src, ma_atomic_memory_order order)
{
    ma_atomic_if64 r;
    ma_atomic_if64 x;
    x.f = src;
    r.i = ma_atomic_fetch_and_explicit_64((volatile ma_uint64*)dst, x.i, order);
    return r.f;
}
#define ma_atomic_clear_f32(ptr)                                        (float )ma_atomic_clear_explicit_f32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_clear_f64(ptr)                                        (double)ma_atomic_clear_explicit_f64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_f32(dst, src)                                   ma_atomic_store_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_store_f64(dst, src)                                   ma_atomic_store_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_f32(ptr)                                         (float )ma_atomic_load_explicit_f32(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_load_f64(ptr)                                         (double)ma_atomic_load_explicit_f64(ptr, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_f32(dst, src)                                (float )ma_atomic_exchange_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_exchange_f64(dst, src)                                (double)ma_atomic_exchange_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_f32(dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_f32(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_strong_f64(dst, expected, desired)   ma_atomic_compare_exchange_strong_explicit_f64(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_f32(dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_f32(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_compare_exchange_weak_f64(dst, expected, desired)     ma_atomic_compare_exchange_weak_explicit_f64(dst, expected, desired, ma_atomic_memory_order_seq_cst, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_f32(dst, src)                               ma_atomic_fetch_add_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_add_f64(dst, src)                               ma_atomic_fetch_add_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_f32(dst, src)                               ma_atomic_fetch_sub_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_sub_f64(dst, src)                               ma_atomic_fetch_sub_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_f32(dst, src)                                ma_atomic_fetch_or_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_or_f64(dst, src)                                ma_atomic_fetch_or_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_f32(dst, src)                               ma_atomic_fetch_xor_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_xor_f64(dst, src)                               ma_atomic_fetch_xor_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_f32(dst, src)                               ma_atomic_fetch_and_explicit_f32(dst, src, ma_atomic_memory_order_seq_cst)
#define ma_atomic_fetch_and_f64(dst, src)                               ma_atomic_fetch_and_explicit_f64(dst, src, ma_atomic_memory_order_seq_cst)
static MA_INLINE float ma_atomic_compare_and_swap_f32(volatile float* dst, float expected, float desired)
{
    ma_atomic_if32 r;
    ma_atomic_if32 e, d;
    e.f = expected;
    d.f = desired;
    r.i = ma_atomic_compare_and_swap_32((volatile ma_uint32*)dst, e.i, d.i);
    return r.f;
}
static MA_INLINE double ma_atomic_compare_and_swap_f64(volatile double* dst, double expected, double desired)
{
    ma_atomic_if64 r;
    ma_atomic_if64 e, d;
    e.f = expected;
    d.f = desired;
    r.i = ma_atomic_compare_and_swap_64((volatile ma_uint64*)dst, e.i, d.i);
    return r.f;
}
typedef ma_atomic_flag ma_atomic_spinlock;
static MA_INLINE void ma_atomic_spinlock_lock(volatile ma_atomic_spinlock* pSpinlock)
{
    for (;;) {
        if (ma_atomic_flag_test_and_set_explicit(pSpinlock, ma_atomic_memory_order_acquire) == 0) {
            break;
        }
        while (ma_atomic_flag_load_explicit(pSpinlock, ma_atomic_memory_order_relaxed) == 1) {
        }
    }
}
static MA_INLINE void ma_atomic_spinlock_unlock(volatile ma_atomic_spinlock* pSpinlock)
{
    ma_atomic_flag_clear_explicit(pSpinlock, ma_atomic_memory_order_release);
}
#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic pop
#endif
#if defined(__cplusplus)
}
#endif
#endif
/* c89atomic.h end */

#define MA_ATOMIC_SAFE_TYPE_IMPL(c89TypeExtension, type) \
    static MA_INLINE ma_##type ma_atomic_##type##_get(ma_atomic_##type* x) \
    { \
        return (ma_##type)ma_atomic_load_##c89TypeExtension(&x->value); \
    } \
    static MA_INLINE void ma_atomic_##type##_set(ma_atomic_##type* x, ma_##type value) \
    { \
        ma_atomic_store_##c89TypeExtension(&x->value, value); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_exchange(ma_atomic_##type* x, ma_##type value) \
    { \
        return (ma_##type)ma_atomic_exchange_##c89TypeExtension(&x->value, value); \
    } \
    static MA_INLINE ma_bool32 ma_atomic_##type##_compare_exchange(ma_atomic_##type* x, ma_##type* expected, ma_##type desired) \
    { \
        return ma_atomic_compare_exchange_weak_##c89TypeExtension(&x->value, expected, desired); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_fetch_add(ma_atomic_##type* x, ma_##type y) \
    { \
        return (ma_##type)ma_atomic_fetch_add_##c89TypeExtension(&x->value, y); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_fetch_sub(ma_atomic_##type* x, ma_##type y) \
    { \
        return (ma_##type)ma_atomic_fetch_sub_##c89TypeExtension(&x->value, y); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_fetch_or(ma_atomic_##type* x, ma_##type y) \
    { \
        return (ma_##type)ma_atomic_fetch_or_##c89TypeExtension(&x->value, y); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_fetch_xor(ma_atomic_##type* x, ma_##type y) \
    { \
        return (ma_##type)ma_atomic_fetch_xor_##c89TypeExtension(&x->value, y); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_fetch_and(ma_atomic_##type* x, ma_##type y) \
    { \
        return (ma_##type)ma_atomic_fetch_and_##c89TypeExtension(&x->value, y); \
    } \
    static MA_INLINE ma_##type ma_atomic_##type##_compare_and_swap(ma_atomic_##type* x, ma_##type expected, ma_##type desired) \
    { \
        return (ma_##type)ma_atomic_compare_and_swap_##c89TypeExtension(&x->value, expected, desired); \
    } \

#define MA_ATOMIC_SAFE_TYPE_IMPL_PTR(type) \
    static MA_INLINE ma_##type* ma_atomic_ptr_##type##_get(ma_atomic_ptr_##type* x) \
    { \
        return ma_atomic_load_ptr((void**)&x->value); \
    } \
    static MA_INLINE void ma_atomic_ptr_##type##_set(ma_atomic_ptr_##type* x, ma_##type* value) \
    { \
        ma_atomic_store_ptr((void**)&x->value, (void*)value); \
    } \
    static MA_INLINE ma_##type* ma_atomic_ptr_##type##_exchange(ma_atomic_ptr_##type* x, ma_##type* value) \
    { \
        return ma_atomic_exchange_ptr((void**)&x->value, (void*)value); \
    } \
    static MA_INLINE ma_bool32 ma_atomic_ptr_##type##_compare_exchange(ma_atomic_ptr_##type* x, ma_##type** expected, ma_##type* desired) \
    { \
        return ma_atomic_compare_exchange_weak_ptr((void**)&x->value, (void*)expected, (void*)desired); \
    } \
    static MA_INLINE ma_##type* ma_atomic_ptr_##type##_compare_and_swap(ma_atomic_ptr_##type* x, ma_##type* expected, ma_##type* desired) \
    { \
        return (ma_##type*)ma_atomic_compare_and_swap_ptr((void**)&x->value, (void*)expected, (void*)desired); \
    } \

MA_ATOMIC_SAFE_TYPE_IMPL(32,  uint32)
MA_ATOMIC_SAFE_TYPE_IMPL(i32, int32)
MA_ATOMIC_SAFE_TYPE_IMPL(64,  uint64)
MA_ATOMIC_SAFE_TYPE_IMPL(f32, float)
MA_ATOMIC_SAFE_TYPE_IMPL(32,  bool32)

#if !defined(MA_NO_DEVICE_IO)
MA_ATOMIC_SAFE_TYPE_IMPL(i32, device_state)
#endif


MA_API ma_uint64 ma_calculate_frame_count_after_resampling(ma_uint32 sampleRateOut, ma_uint32 sampleRateIn, ma_uint64 frameCountIn)
{
    /* This is based on the calculation in ma_linear_resampler_get_expected_output_frame_count(). */
    ma_uint64 outputFrameCount;
    ma_uint64 preliminaryInputFrameCountFromFrac;
    ma_uint64 preliminaryInputFrameCount;

    if (sampleRateIn == 0 || sampleRateOut == 0 || frameCountIn == 0) {
        return 0;
    }

    if (sampleRateOut == sampleRateIn) {
        return frameCountIn;
    }

    outputFrameCount = (frameCountIn * sampleRateOut) / sampleRateIn;

    preliminaryInputFrameCountFromFrac = (outputFrameCount * (sampleRateIn / sampleRateOut)) / sampleRateOut;
    preliminaryInputFrameCount         = (outputFrameCount * (sampleRateIn % sampleRateOut)) + preliminaryInputFrameCountFromFrac;

    if (preliminaryInputFrameCount <= frameCountIn) {
        outputFrameCount += 1;
    }

    return outputFrameCount;
}

#ifndef MA_DATA_CONVERTER_STACK_BUFFER_SIZE
#define MA_DATA_CONVERTER_STACK_BUFFER_SIZE     4096
#endif



#if defined(MA_WIN32)
static ma_result ma_result_from_GetLastError(DWORD error)
{
    switch (error)
    {
        case ERROR_SUCCESS:             return MA_SUCCESS;
        case ERROR_PATH_NOT_FOUND:      return MA_DOES_NOT_EXIST;
        case ERROR_TOO_MANY_OPEN_FILES: return MA_TOO_MANY_OPEN_FILES;
        case ERROR_NOT_ENOUGH_MEMORY:   return MA_OUT_OF_MEMORY;
        case ERROR_DISK_FULL:           return MA_NO_SPACE;
        case ERROR_HANDLE_EOF:          return MA_AT_END;
        case ERROR_NEGATIVE_SEEK:       return MA_BAD_SEEK;
        case ERROR_INVALID_PARAMETER:   return MA_INVALID_ARGS;
        case ERROR_ACCESS_DENIED:       return MA_ACCESS_DENIED;
        case ERROR_SEM_TIMEOUT:         return MA_TIMEOUT;
        case ERROR_FILE_NOT_FOUND:      return MA_DOES_NOT_EXIST;
        default: break;
    }

    return MA_ERROR;
}
#endif  /* MA_WIN32 */


/*******************************************************************************

Threading

*******************************************************************************/
static MA_INLINE ma_result ma_spinlock_lock_ex(volatile ma_spinlock* pSpinlock, ma_bool32 yield)
{
    if (pSpinlock == NULL) {
        return MA_INVALID_ARGS;
    }

    for (;;) {
        if (ma_atomic_exchange_explicit_32(pSpinlock, 1, ma_atomic_memory_order_acquire) == 0) {
            break;
        }

        while (ma_atomic_load_explicit_32(pSpinlock, ma_atomic_memory_order_relaxed) == 1) {
            if (yield) {
                ma_yield();
            }
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_spinlock_lock(volatile ma_spinlock* pSpinlock)
{
    return ma_spinlock_lock_ex(pSpinlock, MA_TRUE);
}

MA_API ma_result ma_spinlock_lock_noyield(volatile ma_spinlock* pSpinlock)
{
    return ma_spinlock_lock_ex(pSpinlock, MA_FALSE);
}

MA_API ma_result ma_spinlock_unlock(volatile ma_spinlock* pSpinlock)
{
    if (pSpinlock == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_store_explicit_32(pSpinlock, 0, ma_atomic_memory_order_release);
    return MA_SUCCESS;
}


#ifndef MA_NO_THREADING
#if defined(MA_POSIX)
    #define MA_THREADCALL
    typedef void* ma_thread_result;
#elif defined(MA_WIN32)
    #define MA_THREADCALL WINAPI
    typedef unsigned long ma_thread_result;
#endif

typedef ma_thread_result (MA_THREADCALL * ma_thread_entry_proc)(void* pData);

#ifdef MA_POSIX
static ma_result ma_thread_create__posix(ma_thread* pThread, ma_thread_priority priority, size_t stackSize, ma_thread_entry_proc entryProc, void* pData)
{
    int result;
    pthread_attr_t* pAttr = NULL;

#if !defined(__EMSCRIPTEN__) && !defined(__3DS__)
    /* Try setting the thread priority. It's not critical if anything fails here. */
    pthread_attr_t attr;
    if (pthread_attr_init(&attr) == 0) {
        int scheduler = -1;

        /* We successfully initialized our attributes object so we can assign the pointer so it's passed into pthread_create(). */
        pAttr = &attr;

        /* We need to set the scheduler policy. Only do this if the OS supports pthread_attr_setschedpolicy() */
        #if !defined(MA_BEOS)
        {
            if (priority == ma_thread_priority_idle) {
            #ifdef SCHED_IDLE
                if (pthread_attr_setschedpolicy(&attr, SCHED_IDLE) == 0) {
                    scheduler = SCHED_IDLE;
                }
            #endif
            } else if (priority == ma_thread_priority_realtime) {
            #ifdef SCHED_FIFO
                if (pthread_attr_setschedpolicy(&attr, SCHED_FIFO) == 0) {
                    scheduler = SCHED_FIFO;
                }
            #endif
            #ifdef MA_LINUX
            } else {
                scheduler = sched_getscheduler(0);
            #endif
            }
        }
        #endif

        if (stackSize > 0) {
            pthread_attr_setstacksize(&attr, stackSize);
        }

        if (scheduler != -1) {
            int priorityMin = sched_get_priority_min(scheduler);
            int priorityMax = sched_get_priority_max(scheduler);
            int priorityStep = (priorityMax - priorityMin) / 7;  /* 7 = number of priorities supported by miniaudio. */

            struct sched_param sched;
            if (pthread_attr_getschedparam(&attr, &sched) == 0) {
                if (priority == ma_thread_priority_idle) {
                    sched.sched_priority = priorityMin;
                } else if (priority == ma_thread_priority_realtime) {
                    #if defined(MA_PTHREAD_REALTIME_THREAD_PRIORITY)
                    {
                        sched.sched_priority = MA_PTHREAD_REALTIME_THREAD_PRIORITY;
                    }
                    #else
                    {
                        sched.sched_priority = priorityMax;
                    }
                    #endif
                } else {
                    sched.sched_priority += ((int)priority + 5) * priorityStep;  /* +5 because the lowest priority is -5. */
                }

                if (sched.sched_priority < priorityMin) {
                    sched.sched_priority = priorityMin;
                }
                if (sched.sched_priority > priorityMax) {
                    sched.sched_priority = priorityMax;
                }

                /* I'm not treating a failure of setting the priority as a critical error so not aborting on failure here. */
                if (pthread_attr_setschedparam(&attr, &sched) == 0) {
                    #if !defined(MA_ANDROID) || (defined(__ANDROID_API__) && __ANDROID_API__ >= 28)
                    {
                        pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
                    }
                    #endif
                }
            }
        }
    }
#else
    /* It's the emscripten build. We'll have a few unused parameters. */
    (void)priority;
    (void)stackSize;
#endif

    result = pthread_create((pthread_t*)pThread, pAttr, entryProc, pData);

    /* The thread attributes object is no longer required. */
    if (pAttr != NULL) {
        pthread_attr_destroy(pAttr);
    }

    if (result != 0) {
        return ma_result_from_errno(result);
    }

    return MA_SUCCESS;
}

static void ma_thread_wait__posix(ma_thread* pThread)
{
    pthread_join((pthread_t)*pThread, NULL);
}


static ma_result ma_mutex_init__posix(ma_mutex* pMutex)
{
    int result;

    if (pMutex == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pMutex);

    result = pthread_mutex_init((pthread_mutex_t*)pMutex, NULL);
    if (result != 0) {
        return ma_result_from_errno(result);
    }

    return MA_SUCCESS;
}

static void ma_mutex_uninit__posix(ma_mutex* pMutex)
{
    pthread_mutex_destroy((pthread_mutex_t*)pMutex);
}

static void ma_mutex_lock__posix(ma_mutex* pMutex)
{
    pthread_mutex_lock((pthread_mutex_t*)pMutex);
}

static void ma_mutex_unlock__posix(ma_mutex* pMutex)
{
    pthread_mutex_unlock((pthread_mutex_t*)pMutex);
}


static ma_result ma_event_init__posix(ma_event* pEvent)
{
    int result;

    result = pthread_mutex_init((pthread_mutex_t*)&pEvent->lock, NULL);
    if (result != 0) {
        return ma_result_from_errno(result);
    }

    result = pthread_cond_init((pthread_cond_t*)&pEvent->cond, NULL);
    if (result != 0) {
        pthread_mutex_destroy((pthread_mutex_t*)&pEvent->lock);
        return ma_result_from_errno(result);
    }

    pEvent->value = 0;
    return MA_SUCCESS;
}

static void ma_event_uninit__posix(ma_event* pEvent)
{
    pthread_cond_destroy((pthread_cond_t*)&pEvent->cond);
    pthread_mutex_destroy((pthread_mutex_t*)&pEvent->lock);
}

static ma_result ma_event_wait__posix(ma_event* pEvent)
{
    pthread_mutex_lock((pthread_mutex_t*)&pEvent->lock);
    {
        while (pEvent->value == 0) {
            pthread_cond_wait((pthread_cond_t*)&pEvent->cond, (pthread_mutex_t*)&pEvent->lock);
        }
        pEvent->value = 0;  /* Auto-reset. */
    }
    pthread_mutex_unlock((pthread_mutex_t*)&pEvent->lock);

    return MA_SUCCESS;
}

static ma_result ma_event_signal__posix(ma_event* pEvent)
{
    pthread_mutex_lock((pthread_mutex_t*)&pEvent->lock);
    {
        pEvent->value = 1;
        pthread_cond_signal((pthread_cond_t*)&pEvent->cond);
    }
    pthread_mutex_unlock((pthread_mutex_t*)&pEvent->lock);

    return MA_SUCCESS;
}


static ma_result ma_semaphore_init__posix(int initialValue, ma_semaphore* pSemaphore)
{
    int result;

    if (pSemaphore == NULL) {
        return MA_INVALID_ARGS;
    }

    pSemaphore->value = initialValue;

    result = pthread_mutex_init((pthread_mutex_t*)&pSemaphore->lock, NULL);
    if (result != 0) {
        return ma_result_from_errno(result);  /* Failed to create mutex. */
    }

    result = pthread_cond_init((pthread_cond_t*)&pSemaphore->cond, NULL);
    if (result != 0) {
        pthread_mutex_destroy((pthread_mutex_t*)&pSemaphore->lock);
        return ma_result_from_errno(result);  /* Failed to create condition variable. */
    }

    return MA_SUCCESS;
}

static void ma_semaphore_uninit__posix(ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        return;
    }

    pthread_cond_destroy((pthread_cond_t*)&pSemaphore->cond);
    pthread_mutex_destroy((pthread_mutex_t*)&pSemaphore->lock);
}

static ma_result ma_semaphore_wait__posix(ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        return MA_INVALID_ARGS;
    }

    pthread_mutex_lock((pthread_mutex_t*)&pSemaphore->lock);
    {
        /* We need to wait on a condition variable before escaping. We can't return from this function until the semaphore has been signaled. */
        while (pSemaphore->value == 0) {
            pthread_cond_wait((pthread_cond_t*)&pSemaphore->cond, (pthread_mutex_t*)&pSemaphore->lock);
        }

        pSemaphore->value -= 1;
    }
    pthread_mutex_unlock((pthread_mutex_t*)&pSemaphore->lock);

    return MA_SUCCESS;
}

static ma_result ma_semaphore_release__posix(ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        return MA_INVALID_ARGS;
    }

    pthread_mutex_lock((pthread_mutex_t*)&pSemaphore->lock);
    {
        pSemaphore->value += 1;
        pthread_cond_signal((pthread_cond_t*)&pSemaphore->cond);
    }
    pthread_mutex_unlock((pthread_mutex_t*)&pSemaphore->lock);

    return MA_SUCCESS;
}
#elif defined(MA_WIN32)
static int ma_thread_priority_to_win32(ma_thread_priority priority)
{
    switch (priority) {
        case ma_thread_priority_idle:     return THREAD_PRIORITY_IDLE;
        case ma_thread_priority_lowest:   return THREAD_PRIORITY_LOWEST;
        case ma_thread_priority_low:      return THREAD_PRIORITY_BELOW_NORMAL;
        case ma_thread_priority_normal:   return THREAD_PRIORITY_NORMAL;
        case ma_thread_priority_high:     return THREAD_PRIORITY_ABOVE_NORMAL;
        case ma_thread_priority_highest:  return THREAD_PRIORITY_HIGHEST;
        case ma_thread_priority_realtime: return THREAD_PRIORITY_TIME_CRITICAL;
        default:                          return THREAD_PRIORITY_NORMAL;
    }
}

static ma_result ma_thread_create__win32(ma_thread* pThread, ma_thread_priority priority, size_t stackSize, ma_thread_entry_proc entryProc, void* pData)
{
    DWORD threadID; /* Not used. Only used for passing into CreateThread() so it doesn't fail on Windows 98. */

    *pThread = CreateThread(NULL, stackSize, entryProc, pData, 0, &threadID);
    if (*pThread == NULL) {
        return ma_result_from_GetLastError(GetLastError());
    }

    SetThreadPriority((HANDLE)*pThread, ma_thread_priority_to_win32(priority));

    return MA_SUCCESS;
}

static void ma_thread_wait__win32(ma_thread* pThread)
{
    WaitForSingleObject((HANDLE)*pThread, INFINITE);
    CloseHandle((HANDLE)*pThread);
}


static ma_result ma_mutex_init__win32(ma_mutex* pMutex)
{
    *pMutex = CreateEventA(NULL, FALSE, TRUE, NULL);
    if (*pMutex == NULL) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}

static void ma_mutex_uninit__win32(ma_mutex* pMutex)
{
    CloseHandle((HANDLE)*pMutex);
}

static void ma_mutex_lock__win32(ma_mutex* pMutex)
{
    WaitForSingleObject((HANDLE)*pMutex, INFINITE);
}

static void ma_mutex_unlock__win32(ma_mutex* pMutex)
{
    SetEvent((HANDLE)*pMutex);
}


static ma_result ma_event_init__win32(ma_event* pEvent)
{
    *pEvent = CreateEventA(NULL, FALSE, FALSE, NULL);
    if (*pEvent == NULL) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}

static void ma_event_uninit__win32(ma_event* pEvent)
{
    CloseHandle((HANDLE)*pEvent);
}

static ma_result ma_event_wait__win32(ma_event* pEvent)
{
    DWORD result = WaitForSingleObject((HANDLE)*pEvent, INFINITE);
    if (result == WAIT_OBJECT_0) {
        return MA_SUCCESS;
    }

    if (result == WAIT_TIMEOUT) {
        return MA_TIMEOUT;
    }

    return ma_result_from_GetLastError(GetLastError());
}

static ma_result ma_event_signal__win32(ma_event* pEvent)
{
    BOOL result = SetEvent((HANDLE)*pEvent);
    if (result == 0) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}


static ma_result ma_semaphore_init__win32(int initialValue, ma_semaphore* pSemaphore)
{
    *pSemaphore = CreateSemaphoreW(NULL, (LONG)initialValue, LONG_MAX, NULL);
    if (*pSemaphore == NULL) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}

static void ma_semaphore_uninit__win32(ma_semaphore* pSemaphore)
{
    CloseHandle((HANDLE)*pSemaphore);
}

static ma_result ma_semaphore_wait__win32(ma_semaphore* pSemaphore)
{
    DWORD result = WaitForSingleObject((HANDLE)*pSemaphore, INFINITE);
    if (result == WAIT_OBJECT_0) {
        return MA_SUCCESS;
    }

    if (result == WAIT_TIMEOUT) {
        return MA_TIMEOUT;
    }

    return ma_result_from_GetLastError(GetLastError());
}

static ma_result ma_semaphore_release__win32(ma_semaphore* pSemaphore)
{
    BOOL result = ReleaseSemaphore((HANDLE)*pSemaphore, 1, NULL);
    if (result == 0) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}
#endif

typedef struct
{
    ma_thread_entry_proc entryProc;
    void* pData;
    ma_allocation_callbacks allocationCallbacks;
} ma_thread_proxy_data;

static ma_thread_result MA_THREADCALL ma_thread_entry_proxy(void* pData)
{
    ma_thread_proxy_data* pProxyData = (ma_thread_proxy_data*)pData;
    ma_thread_entry_proc entryProc;
    void* pEntryProcData;
    ma_thread_result result;

    #if defined(MA_ON_THREAD_ENTRY)
        MA_ON_THREAD_ENTRY
    #endif

    entryProc = pProxyData->entryProc;
    pEntryProcData = pProxyData->pData;

    /* Free the proxy data before getting into the real thread entry proc. */
    ma_free(pProxyData, &pProxyData->allocationCallbacks);

    result = entryProc(pEntryProcData);

    #if defined(MA_ON_THREAD_EXIT)
        MA_ON_THREAD_EXIT
    #endif

    return result;
}

static ma_result ma_thread_create(ma_thread* pThread, ma_thread_priority priority, size_t stackSize, ma_thread_entry_proc entryProc, void* pData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_result result;
    ma_thread_proxy_data* pProxyData;

    if (pThread == NULL || entryProc == NULL) {
        return MA_INVALID_ARGS;
    }

    pProxyData = (ma_thread_proxy_data*)ma_malloc(sizeof(*pProxyData), pAllocationCallbacks);   /* Will be freed by the proxy entry proc. */
    if (pProxyData == NULL) {
        return MA_OUT_OF_MEMORY;
    }

#if defined(MA_THREAD_DEFAULT_STACK_SIZE)
    if (stackSize == 0) {
        stackSize = MA_THREAD_DEFAULT_STACK_SIZE;
    }
#endif

    pProxyData->entryProc = entryProc;
    pProxyData->pData     = pData;
    ma_allocation_callbacks_init_copy(&pProxyData->allocationCallbacks, pAllocationCallbacks);

#if defined(MA_POSIX)
    result = ma_thread_create__posix(pThread, priority, stackSize, ma_thread_entry_proxy, pProxyData);
#elif defined(MA_WIN32)
    result = ma_thread_create__win32(pThread, priority, stackSize, ma_thread_entry_proxy, pProxyData);
#endif

    if (result != MA_SUCCESS) {
        ma_free(pProxyData, pAllocationCallbacks);
        return result;
    }

    return MA_SUCCESS;
}

static void ma_thread_wait(ma_thread* pThread)
{
    if (pThread == NULL) {
        return;
    }

#if defined(MA_POSIX)
    ma_thread_wait__posix(pThread);
#elif defined(MA_WIN32)
    ma_thread_wait__win32(pThread);
#endif
}


MA_API ma_result ma_mutex_init(ma_mutex* pMutex)
{
    if (pMutex == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_mutex_init__posix(pMutex);
#elif defined(MA_WIN32)
    return ma_mutex_init__win32(pMutex);
#endif
}

MA_API void ma_mutex_uninit(ma_mutex* pMutex)
{
    if (pMutex == NULL) {
        return;
    }

#if defined(MA_POSIX)
    ma_mutex_uninit__posix(pMutex);
#elif defined(MA_WIN32)
    ma_mutex_uninit__win32(pMutex);
#endif
}

MA_API void ma_mutex_lock(ma_mutex* pMutex)
{
    if (pMutex == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return;
    }

#if defined(MA_POSIX)
    ma_mutex_lock__posix(pMutex);
#elif defined(MA_WIN32)
    ma_mutex_lock__win32(pMutex);
#endif
}

MA_API void ma_mutex_unlock(ma_mutex* pMutex)
{
    if (pMutex == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return;
    }

#if defined(MA_POSIX)
    ma_mutex_unlock__posix(pMutex);
#elif defined(MA_WIN32)
    ma_mutex_unlock__win32(pMutex);
#endif
}


MA_API ma_result ma_event_init(ma_event* pEvent)
{
    if (pEvent == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_event_init__posix(pEvent);
#elif defined(MA_WIN32)
    return ma_event_init__win32(pEvent);
#endif
}

#if 0
static ma_result ma_event_alloc_and_init(ma_event** ppEvent, ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_result result;
    ma_event* pEvent;

    if (ppEvent == NULL) {
        return MA_INVALID_ARGS;
    }

    *ppEvent = NULL;

    pEvent = ma_malloc(sizeof(*pEvent), pAllocationCallbacks);
    if (pEvent == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_event_init(pEvent);
    if (result != MA_SUCCESS) {
        ma_free(pEvent, pAllocationCallbacks);
        return result;
    }

    *ppEvent = pEvent;
    return result;
}
#endif

MA_API void ma_event_uninit(ma_event* pEvent)
{
    if (pEvent == NULL) {
        return;
    }

#if defined(MA_POSIX)
    ma_event_uninit__posix(pEvent);
#elif defined(MA_WIN32)
    ma_event_uninit__win32(pEvent);
#endif
}

#if 0
static void ma_event_uninit_and_free(ma_event* pEvent, ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pEvent == NULL) {
        return;
    }

    ma_event_uninit(pEvent);
    ma_free(pEvent, pAllocationCallbacks);
}
#endif

MA_API ma_result ma_event_wait(ma_event* pEvent)
{
    if (pEvent == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert to the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_event_wait__posix(pEvent);
#elif defined(MA_WIN32)
    return ma_event_wait__win32(pEvent);
#endif
}

MA_API ma_result ma_event_signal(ma_event* pEvent)
{
    if (pEvent == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert to the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_event_signal__posix(pEvent);
#elif defined(MA_WIN32)
    return ma_event_signal__win32(pEvent);
#endif
}


MA_API ma_result ma_semaphore_init(int initialValue, ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_semaphore_init__posix(initialValue, pSemaphore);
#elif defined(MA_WIN32)
    return ma_semaphore_init__win32(initialValue, pSemaphore);
#endif
}

MA_API void ma_semaphore_uninit(ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return;
    }

#if defined(MA_POSIX)
    ma_semaphore_uninit__posix(pSemaphore);
#elif defined(MA_WIN32)
    ma_semaphore_uninit__win32(pSemaphore);
#endif
}

MA_API ma_result ma_semaphore_wait(ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_semaphore_wait__posix(pSemaphore);
#elif defined(MA_WIN32)
    return ma_semaphore_wait__win32(pSemaphore);
#endif
}

MA_API ma_result ma_semaphore_release(ma_semaphore* pSemaphore)
{
    if (pSemaphore == NULL) {
        MA_ASSERT(MA_FALSE);    /* Fire an assert so the caller is aware of this bug. */
        return MA_INVALID_ARGS;
    }

#if defined(MA_POSIX)
    return ma_semaphore_release__posix(pSemaphore);
#elif defined(MA_WIN32)
    return ma_semaphore_release__win32(pSemaphore);
#endif
}
#else
/* MA_NO_THREADING is set which means threading is disabled. Threading is required by some API families. If any of these are enabled we need to throw an error. */
#ifndef MA_NO_DEVICE_IO
#error "MA_NO_THREADING cannot be used without MA_NO_DEVICE_IO";
#endif
#endif  /* MA_NO_THREADING */



#define MA_FENCE_COUNTER_MAX    0x7FFFFFFF

MA_API ma_result ma_fence_init(ma_fence* pFence)
{
    if (pFence == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFence);
    pFence->counter = 0;

    #ifndef MA_NO_THREADING
    {
        ma_result result;

        result = ma_event_init(&pFence->e);
        if (result != MA_SUCCESS) {
            return result;
        }
    }
    #endif

    return MA_SUCCESS;
}

MA_API void ma_fence_uninit(ma_fence* pFence)
{
    if (pFence == NULL) {
        return;
    }

    #ifndef MA_NO_THREADING
    {
        ma_event_uninit(&pFence->e);
    }
    #endif

    MA_ZERO_OBJECT(pFence);
}

MA_API ma_result ma_fence_acquire(ma_fence* pFence)
{
    if (pFence == NULL) {
        return MA_INVALID_ARGS;
    }

    for (;;) {
        ma_uint32 oldCounter = ma_atomic_load_32(&pFence->counter);
        ma_uint32 newCounter = oldCounter + 1;

        /* Make sure we're not about to exceed our maximum value. */
        if (newCounter > MA_FENCE_COUNTER_MAX) {
            MA_ASSERT(MA_FALSE);
            return MA_OUT_OF_RANGE;
        }

        if (ma_atomic_compare_exchange_weak_32(&pFence->counter, &oldCounter, newCounter)) {
            return MA_SUCCESS;
        } else {
            if (oldCounter == MA_FENCE_COUNTER_MAX) {
                MA_ASSERT(MA_FALSE);
                return MA_OUT_OF_RANGE; /* The other thread took the last available slot. Abort. */
            }
        }
    }

    /* Should never get here. */
    /*return MA_SUCCESS;*/
}

MA_API ma_result ma_fence_release(ma_fence* pFence)
{
    if (pFence == NULL) {
        return MA_INVALID_ARGS;
    }

    for (;;) {
        ma_uint32 oldCounter = ma_atomic_load_32(&pFence->counter);
        ma_uint32 newCounter = oldCounter - 1;

        if (oldCounter == 0) {
            MA_ASSERT(MA_FALSE);
            return MA_INVALID_OPERATION;    /* Acquire/release mismatch. */
        }

        if (ma_atomic_compare_exchange_weak_32(&pFence->counter, &oldCounter, newCounter)) {
            #ifndef MA_NO_THREADING
            {
                if (newCounter == 0) {
                    ma_event_signal(&pFence->e);    /* <-- ma_fence_wait() will be waiting on this. */
                }
            }
            #endif

            return MA_SUCCESS;
        } else {
            if (oldCounter == 0) {
                MA_ASSERT(MA_FALSE);
                return MA_INVALID_OPERATION;    /* Another thread has taken the 0 slot. Acquire/release mismatch. */
            }
        }
    }

    /* Should never get here. */
    /*return MA_SUCCESS;*/
}

MA_API ma_result ma_fence_wait(ma_fence* pFence)
{
    if (pFence == NULL) {
        return MA_INVALID_ARGS;
    }

    for (;;) {
        ma_uint32 counter;

        counter = ma_atomic_load_32(&pFence->counter);
        if (counter == 0) {
            /*
            Counter has hit zero. By the time we get here some other thread may have acquired the
            fence again, but that is where the caller needs to take care with how they se the fence.
            */
            return MA_SUCCESS;
        }

        /* Getting here means the counter is > 0. We'll need to wait for something to happen. */
        #ifndef MA_NO_THREADING
        {
            ma_result result;

            result = ma_event_wait(&pFence->e);
            if (result != MA_SUCCESS) {
                return result;
            }
        }
        #endif
    }

    /* Should never get here. */
    /*return MA_INVALID_OPERATION;*/
}


MA_API ma_result ma_async_notification_signal(ma_async_notification* pNotification)
{
    ma_async_notification_callbacks* pNotificationCallbacks = (ma_async_notification_callbacks*)pNotification;

    if (pNotification == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pNotificationCallbacks->onSignal == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    pNotificationCallbacks->onSignal(pNotification);
    return MA_INVALID_ARGS;
}


static void ma_async_notification_poll__on_signal(ma_async_notification* pNotification)
{
    ((ma_async_notification_poll*)pNotification)->signalled = MA_TRUE;
}

MA_API ma_result ma_async_notification_poll_init(ma_async_notification_poll* pNotificationPoll)
{
    if (pNotificationPoll == NULL) {
        return MA_INVALID_ARGS;
    }

    pNotificationPoll->cb.onSignal = ma_async_notification_poll__on_signal;
    pNotificationPoll->signalled = MA_FALSE;

    return MA_SUCCESS;
}

MA_API ma_bool32 ma_async_notification_poll_is_signalled(const ma_async_notification_poll* pNotificationPoll)
{
    if (pNotificationPoll == NULL) {
        return MA_FALSE;
    }

    return pNotificationPoll->signalled;
}


static void ma_async_notification_event__on_signal(ma_async_notification* pNotification)
{
    ma_async_notification_event_signal((ma_async_notification_event*)pNotification);
}

MA_API ma_result ma_async_notification_event_init(ma_async_notification_event* pNotificationEvent)
{
    if (pNotificationEvent == NULL) {
        return MA_INVALID_ARGS;
    }

    pNotificationEvent->cb.onSignal = ma_async_notification_event__on_signal;

    #ifndef MA_NO_THREADING
    {
        ma_result result;

        result = ma_event_init(&pNotificationEvent->e);
        if (result != MA_SUCCESS) {
            return result;
        }

        return MA_SUCCESS;
    }
    #else
    {
        return MA_NOT_IMPLEMENTED;  /* Threading is disabled. */
    }
    #endif
}

MA_API ma_result ma_async_notification_event_uninit(ma_async_notification_event* pNotificationEvent)
{
    if (pNotificationEvent == NULL) {
        return MA_INVALID_ARGS;
    }

    #ifndef MA_NO_THREADING
    {
        ma_event_uninit(&pNotificationEvent->e);
        return MA_SUCCESS;
    }
    #else
    {
        return MA_NOT_IMPLEMENTED;  /* Threading is disabled. */
    }
    #endif
}

MA_API ma_result ma_async_notification_event_wait(ma_async_notification_event* pNotificationEvent)
{
    if (pNotificationEvent == NULL) {
        return MA_INVALID_ARGS;
    }

    #ifndef MA_NO_THREADING
    {
        return ma_event_wait(&pNotificationEvent->e);
    }
    #else
    {
        return MA_NOT_IMPLEMENTED;  /* Threading is disabled. */
    }
    #endif
}

MA_API ma_result ma_async_notification_event_signal(ma_async_notification_event* pNotificationEvent)
{
    if (pNotificationEvent == NULL) {
        return MA_INVALID_ARGS;
    }

    #ifndef MA_NO_THREADING
    {
        return ma_event_signal(&pNotificationEvent->e);
    }
    #else
    {
        return MA_NOT_IMPLEMENTED;  /* Threading is disabled. */
    }
    #endif
}



/************************************************************************************************************************************************************

Job Queue

************************************************************************************************************************************************************/
MA_API ma_slot_allocator_config ma_slot_allocator_config_init(ma_uint32 capacity)
{
    ma_slot_allocator_config config;

    MA_ZERO_OBJECT(&config);
    config.capacity = capacity;

    return config;
}


static MA_INLINE ma_uint32 ma_slot_allocator_calculate_group_capacity(ma_uint32 slotCapacity)
{
    ma_uint32 cap = slotCapacity / 32;
    if ((slotCapacity % 32) != 0) {
        cap += 1;
    }

    return cap;
}

static MA_INLINE ma_uint32 ma_slot_allocator_group_capacity(const ma_slot_allocator* pAllocator)
{
    return ma_slot_allocator_calculate_group_capacity(pAllocator->capacity);
}


typedef struct
{
    size_t sizeInBytes;
    size_t groupsOffset;
    size_t slotsOffset;
} ma_slot_allocator_heap_layout;

static ma_result ma_slot_allocator_get_heap_layout(const ma_slot_allocator_config* pConfig, ma_slot_allocator_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->capacity == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Groups. */
    pHeapLayout->groupsOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(ma_slot_allocator_calculate_group_capacity(pConfig->capacity) * sizeof(ma_slot_allocator_group));

    /* Slots. */
    pHeapLayout->slotsOffset  = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(pConfig->capacity * sizeof(ma_uint32));

    return MA_SUCCESS;
}

MA_API ma_result ma_slot_allocator_get_heap_size(const ma_slot_allocator_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_slot_allocator_heap_layout layout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_slot_allocator_get_heap_layout(pConfig, &layout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = layout.sizeInBytes;

    return result;
}

MA_API ma_result ma_slot_allocator_init_preallocated(const ma_slot_allocator_config* pConfig, void* pHeap, ma_slot_allocator* pAllocator)
{
    ma_result result;
    ma_slot_allocator_heap_layout heapLayout;

    if (pAllocator == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pAllocator);

    if (pHeap == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_slot_allocator_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pAllocator->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pAllocator->pGroups  = (ma_slot_allocator_group*)ma_offset_ptr(pHeap, heapLayout.groupsOffset);
    pAllocator->pSlots   = (ma_uint32*)ma_offset_ptr(pHeap, heapLayout.slotsOffset);
    pAllocator->capacity = pConfig->capacity;

    return MA_SUCCESS;
}

MA_API ma_result ma_slot_allocator_init(const ma_slot_allocator_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_slot_allocator* pAllocator)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_slot_allocator_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to retrieve the size of the heap allocation. */
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_slot_allocator_init_preallocated(pConfig, pHeap, pAllocator);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pAllocator->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_slot_allocator_uninit(ma_slot_allocator* pAllocator, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocator == NULL) {
        return;
    }

    if (pAllocator->_ownsHeap) {
        ma_free(pAllocator->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_slot_allocator_alloc(ma_slot_allocator* pAllocator, ma_uint64* pSlot)
{
    ma_uint32 iAttempt;
    const ma_uint32 maxAttempts = 2;    /* The number of iterations to perform until returning MA_OUT_OF_MEMORY if no slots can be found. */

    if (pAllocator == NULL || pSlot == NULL) {
        return MA_INVALID_ARGS;
    }

    for (iAttempt = 0; iAttempt < maxAttempts; iAttempt += 1) {
        /* We need to acquire a suitable bitfield first. This is a bitfield that's got an available slot within it. */
        ma_uint32 iGroup;
        for (iGroup = 0; iGroup < ma_slot_allocator_group_capacity(pAllocator); iGroup += 1) {
            /* CAS */
            for (;;) {
                ma_uint32 oldBitfield;
                ma_uint32 newBitfield;
                ma_uint32 bitOffset;

                oldBitfield = ma_atomic_load_32(&pAllocator->pGroups[iGroup].bitfield);  /* <-- This copy must happen. The compiler must not optimize this away. */

                /* Fast check to see if anything is available. */
                if (oldBitfield == 0xFFFFFFFF) {
                    break;  /* No available bits in this bitfield. */
                }

                bitOffset = ma_ffs_32(~oldBitfield);
                MA_ASSERT(bitOffset < 32);

                newBitfield = oldBitfield | (1 << bitOffset);

                if (ma_atomic_compare_and_swap_32(&pAllocator->pGroups[iGroup].bitfield, oldBitfield, newBitfield) == oldBitfield) {
                    ma_uint32 slotIndex;

                    /* Increment the counter as soon as possible to have other threads report out-of-memory sooner than later. */
                    ma_atomic_fetch_add_32(&pAllocator->count, 1);

                    /* The slot index is required for constructing the output value. */
                    slotIndex = (iGroup << 5) + bitOffset;  /* iGroup << 5 = iGroup * 32 */
                    if (slotIndex >= pAllocator->capacity) {
                        return MA_OUT_OF_MEMORY;
                    }

                    /* Increment the reference count before constructing the output value. */
                    pAllocator->pSlots[slotIndex] += 1;

                    /* Construct the output value. */
                    *pSlot = (((ma_uint64)pAllocator->pSlots[slotIndex] << 32) | slotIndex);

                    return MA_SUCCESS;
                }
            }
        }

        /* We weren't able to find a slot. If it's because we've reached our capacity we need to return MA_OUT_OF_MEMORY. Otherwise we need to do another iteration and try again. */
        if (pAllocator->count < pAllocator->capacity) {
            ma_yield();
        } else {
            return MA_OUT_OF_MEMORY;
        }
    }

    /* We couldn't find a slot within the maximum number of attempts. */
    return MA_OUT_OF_MEMORY;
}

MA_API ma_result ma_slot_allocator_free(ma_slot_allocator* pAllocator, ma_uint64 slot)
{
    ma_uint32 iGroup;
    ma_uint32 iBit;

    if (pAllocator == NULL) {
        return MA_INVALID_ARGS;
    }

    iGroup = (ma_uint32)((slot & 0xFFFFFFFF) >> 5);   /* slot / 32 */
    iBit   = (ma_uint32)((slot & 0xFFFFFFFF) & 31);   /* slot % 32 */

    if (iGroup >= ma_slot_allocator_group_capacity(pAllocator)) {
        return MA_INVALID_ARGS;
    }

    MA_ASSERT(iBit < 32);   /* This must be true due to the logic we used to actually calculate it. */

    while (ma_atomic_load_32(&pAllocator->count) > 0) {
        /* CAS */
        ma_uint32 oldBitfield;
        ma_uint32 newBitfield;

        oldBitfield = ma_atomic_load_32(&pAllocator->pGroups[iGroup].bitfield);  /* <-- This copy must happen. The compiler must not optimize this away. */
        newBitfield = oldBitfield & ~(1 << iBit);

        /* Debugging for checking for double-frees. */
        #if defined(MA_DEBUG_OUTPUT)
        {
            if ((oldBitfield & (1 << iBit)) == 0) {
                MA_ASSERT(MA_FALSE);    /* Double free detected.*/
            }
        }
        #endif

        if (ma_atomic_compare_and_swap_32(&pAllocator->pGroups[iGroup].bitfield, oldBitfield, newBitfield) == oldBitfield) {
            ma_atomic_fetch_sub_32(&pAllocator->count, 1);
            return MA_SUCCESS;
        }
    }

    /* Getting here means there are no allocations available for freeing. */
    return MA_INVALID_OPERATION;
}


#define MA_JOB_ID_NONE      ~((ma_uint64)0)
#define MA_JOB_SLOT_NONE    (ma_uint16)(~0)

static MA_INLINE ma_uint32 ma_job_extract_refcount(ma_uint64 toc)
{
    return (ma_uint32)(toc >> 32);
}

static MA_INLINE ma_uint16 ma_job_extract_slot(ma_uint64 toc)
{
    return (ma_uint16)(toc & 0x0000FFFF);
}

static MA_INLINE ma_uint16 ma_job_extract_code(ma_uint64 toc)
{
    return (ma_uint16)((toc & 0xFFFF0000) >> 16);
}

static MA_INLINE ma_uint64 ma_job_toc_to_allocation(ma_uint64 toc)
{
    return ((ma_uint64)ma_job_extract_refcount(toc) << 32) | (ma_uint64)ma_job_extract_slot(toc);
}

static MA_INLINE ma_uint64 ma_job_set_refcount(ma_uint64 toc, ma_uint32 refcount)
{
    /* Clear the reference count first. */
    toc = toc & ~((ma_uint64)0xFFFFFFFF << 32);
    toc = toc |  ((ma_uint64)refcount   << 32);

    return toc;
}


MA_API ma_job ma_job_init(ma_uint16 code)
{
    ma_job job;

    MA_ZERO_OBJECT(&job);
    job.toc.breakup.code = code;
    job.toc.breakup.slot = MA_JOB_SLOT_NONE;    /* Temp value. Will be allocated when posted to a queue. */
    job.next             = MA_JOB_ID_NONE;

    return job;
}


static ma_result ma_job_process__noop(ma_job* pJob);
static ma_result ma_job_process__quit(ma_job* pJob);
static ma_result ma_job_process__custom(ma_job* pJob);
static ma_result ma_job_process__resource_manager__load_data_buffer_node(ma_job* pJob);
static ma_result ma_job_process__resource_manager__free_data_buffer_node(ma_job* pJob);
static ma_result ma_job_process__resource_manager__page_data_buffer_node(ma_job* pJob);
static ma_result ma_job_process__resource_manager__load_data_buffer(ma_job* pJob);
static ma_result ma_job_process__resource_manager__free_data_buffer(ma_job* pJob);
static ma_result ma_job_process__resource_manager__load_data_stream(ma_job* pJob);
static ma_result ma_job_process__resource_manager__free_data_stream(ma_job* pJob);
static ma_result ma_job_process__resource_manager__page_data_stream(ma_job* pJob);
static ma_result ma_job_process__resource_manager__seek_data_stream(ma_job* pJob);

#if !defined(MA_NO_DEVICE_IO)
static ma_result ma_job_process__device__aaudio_reroute(ma_job* pJob);
#endif

static ma_job_proc g_jobVTable[MA_JOB_TYPE_COUNT] =
{
    /* Miscellaneous. */
    ma_job_process__quit,                                       /* MA_JOB_TYPE_QUIT */
    ma_job_process__custom,                                     /* MA_JOB_TYPE_CUSTOM */

    /* Resource Manager. */
    ma_job_process__resource_manager__load_data_buffer_node,    /* MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_BUFFER_NODE */
    ma_job_process__resource_manager__free_data_buffer_node,    /* MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER_NODE */
    ma_job_process__resource_manager__page_data_buffer_node,    /* MA_JOB_TYPE_RESOURCE_MANAGER_PAGE_DATA_BUFFER_NODE */
    ma_job_process__resource_manager__load_data_buffer,         /* MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_BUFFER */
    ma_job_process__resource_manager__free_data_buffer,         /* MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER */
    ma_job_process__resource_manager__load_data_stream,         /* MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_STREAM */
    ma_job_process__resource_manager__free_data_stream,         /* MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_STREAM */
    ma_job_process__resource_manager__page_data_stream,         /* MA_JOB_TYPE_RESOURCE_MANAGER_PAGE_DATA_STREAM */
    ma_job_process__resource_manager__seek_data_stream,         /* MA_JOB_TYPE_RESOURCE_MANAGER_SEEK_DATA_STREAM */

    /* Device. */
#if !defined(MA_NO_DEVICE_IO)
    ma_job_process__device__aaudio_reroute                      /* MA_JOB_TYPE_DEVICE_AAUDIO_REROUTE */
#endif
};

MA_API ma_result ma_job_process(ma_job* pJob)
{
    if (pJob == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pJob->toc.breakup.code >= MA_JOB_TYPE_COUNT) {
        return MA_INVALID_OPERATION;
    }

    return g_jobVTable[pJob->toc.breakup.code](pJob);
}

static ma_result ma_job_process__noop(ma_job* pJob)
{
    MA_ASSERT(pJob != NULL);

    /* No-op. */
    (void)pJob;

    return MA_SUCCESS;
}

static ma_result ma_job_process__quit(ma_job* pJob)
{
    return ma_job_process__noop(pJob);
}

static ma_result ma_job_process__custom(ma_job* pJob)
{
    MA_ASSERT(pJob != NULL);

    /* No-op if there's no callback. */
    if (pJob->data.custom.proc == NULL) {
        return MA_SUCCESS;
    }

    return pJob->data.custom.proc(pJob);
}



MA_API ma_job_queue_config ma_job_queue_config_init(ma_uint32 flags, ma_uint32 capacity)
{
    ma_job_queue_config config;

    config.flags    = flags;
    config.capacity = capacity;

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t allocatorOffset;
    size_t jobsOffset;
} ma_job_queue_heap_layout;

static ma_result ma_job_queue_get_heap_layout(const ma_job_queue_config* pConfig, ma_job_queue_heap_layout* pHeapLayout)
{
    ma_result result;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->capacity == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Allocator. */
    {
        ma_slot_allocator_config allocatorConfig;
        size_t allocatorHeapSizeInBytes;

        allocatorConfig = ma_slot_allocator_config_init(pConfig->capacity);
        result = ma_slot_allocator_get_heap_size(&allocatorConfig, &allocatorHeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->allocatorOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes    += allocatorHeapSizeInBytes;
    }

    /* Jobs. */
    pHeapLayout->jobsOffset   = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(pConfig->capacity * sizeof(ma_job));

    return MA_SUCCESS;
}

MA_API ma_result ma_job_queue_get_heap_size(const ma_job_queue_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_job_queue_heap_layout layout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_job_queue_get_heap_layout(pConfig, &layout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = layout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_job_queue_init_preallocated(const ma_job_queue_config* pConfig, void* pHeap, ma_job_queue* pQueue)
{
    ma_result result;
    ma_job_queue_heap_layout heapLayout;
    ma_slot_allocator_config allocatorConfig;

    if (pQueue == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pQueue);

    result = ma_job_queue_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pQueue->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pQueue->flags    = pConfig->flags;
    pQueue->capacity = pConfig->capacity;
    pQueue->pJobs    = (ma_job*)ma_offset_ptr(pHeap, heapLayout.jobsOffset);

    allocatorConfig = ma_slot_allocator_config_init(pConfig->capacity);
    result = ma_slot_allocator_init_preallocated(&allocatorConfig, ma_offset_ptr(pHeap, heapLayout.allocatorOffset), &pQueue->allocator);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* We need a semaphore if we're running in non-blocking mode. If threading is disabled we need to return an error. */
    if ((pQueue->flags & MA_JOB_QUEUE_FLAG_NON_BLOCKING) == 0) {
        #ifndef MA_NO_THREADING
        {
            ma_semaphore_init(0, &pQueue->sem);
        }
        #else
        {
            /* Threading is disabled and we've requested non-blocking mode. */
            return MA_INVALID_OPERATION;
        }
        #endif
    }

    /*
    Our queue needs to be initialized with a free standing node. This should always be slot 0. Required for the lock free algorithm. The first job in the queue is
    just a dummy item for giving us the first item in the list which is stored in the "next" member.
    */
    ma_slot_allocator_alloc(&pQueue->allocator, &pQueue->head);  /* Will never fail. */
    pQueue->pJobs[ma_job_extract_slot(pQueue->head)].next = MA_JOB_ID_NONE;
    pQueue->tail = pQueue->head;

    return MA_SUCCESS;
}

MA_API ma_result ma_job_queue_init(const ma_job_queue_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_job_queue* pQueue)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_job_queue_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_job_queue_init_preallocated(pConfig, pHeap, pQueue);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pQueue->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_job_queue_uninit(ma_job_queue* pQueue, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pQueue == NULL) {
        return;
    }

    /* All we need to do is uninitialize the semaphore. */
    if ((pQueue->flags & MA_JOB_QUEUE_FLAG_NON_BLOCKING) == 0) {
        #ifndef MA_NO_THREADING
        {
            ma_semaphore_uninit(&pQueue->sem);
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never get here. Should have been checked at initialization time. */
        }
        #endif
    }

    ma_slot_allocator_uninit(&pQueue->allocator, pAllocationCallbacks);

    if (pQueue->_ownsHeap) {
        ma_free(pQueue->_pHeap, pAllocationCallbacks);
    }
}

static ma_bool32 ma_job_queue_cas(volatile ma_uint64* dst, ma_uint64 expected, ma_uint64 desired)
{
    /* The new counter is taken from the expected value. */
    return ma_atomic_compare_and_swap_64(dst, expected, ma_job_set_refcount(desired, ma_job_extract_refcount(expected) + 1)) == expected;
}

MA_API ma_result ma_job_queue_post(ma_job_queue* pQueue, const ma_job* pJob)
{
    /*
    Lock free queue implementation based on the paper by Michael and Scott: Nonblocking Algorithms and Preemption-Safe Locking on Multiprogrammed Shared Memory Multiprocessors
    */
    ma_result result;
    ma_uint64 slot;
    ma_uint64 tail;
    ma_uint64 next;

    if (pQueue == NULL || pJob == NULL) {
        return MA_INVALID_ARGS;
    }

    /* We need a new slot. */
    result = ma_slot_allocator_alloc(&pQueue->allocator, &slot);
    if (result != MA_SUCCESS) {
        return result;  /* Probably ran out of slots. If so, MA_OUT_OF_MEMORY will be returned. */
    }

    /* At this point we should have a slot to place the job. */
    MA_ASSERT(ma_job_extract_slot(slot) < pQueue->capacity);

    /* We need to put the job into memory before we do anything. */
    pQueue->pJobs[ma_job_extract_slot(slot)]                  = *pJob;
    pQueue->pJobs[ma_job_extract_slot(slot)].toc.allocation   = slot;                    /* This will overwrite the job code. */
    pQueue->pJobs[ma_job_extract_slot(slot)].toc.breakup.code = pJob->toc.breakup.code;  /* The job code needs to be applied again because the line above overwrote it. */
    pQueue->pJobs[ma_job_extract_slot(slot)].next             = MA_JOB_ID_NONE;          /* Reset for safety. */

    #ifndef MA_USE_EXPERIMENTAL_LOCK_FREE_JOB_QUEUE
    ma_spinlock_lock(&pQueue->lock);
    #endif
    {
        /* The job is stored in memory so now we need to add it to our linked list. We only ever add items to the end of the list. */
        for (;;) {
            tail = ma_atomic_load_64(&pQueue->tail);
            next = ma_atomic_load_64(&pQueue->pJobs[ma_job_extract_slot(tail)].next);

            if (ma_job_toc_to_allocation(tail) == ma_job_toc_to_allocation(ma_atomic_load_64(&pQueue->tail))) {
                if (ma_job_extract_slot(next) == 0xFFFF) {
                    if (ma_job_queue_cas(&pQueue->pJobs[ma_job_extract_slot(tail)].next, next, slot)) {
                        break;
                    }
                } else {
                    ma_job_queue_cas(&pQueue->tail, tail, ma_job_extract_slot(next));
                }
            }
        }
        ma_job_queue_cas(&pQueue->tail, tail, slot);
    }
    #ifndef MA_USE_EXPERIMENTAL_LOCK_FREE_JOB_QUEUE
    ma_spinlock_unlock(&pQueue->lock);
    #endif


    /* Signal the semaphore as the last step if we're using synchronous mode. */
    if ((pQueue->flags & MA_JOB_QUEUE_FLAG_NON_BLOCKING) == 0) {
        #ifndef MA_NO_THREADING
        {
            ma_semaphore_release(&pQueue->sem);
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never get here. Should have been checked at initialization time. */
        }
        #endif
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_job_queue_next(ma_job_queue* pQueue, ma_job* pJob)
{
    ma_uint64 head;
    ma_uint64 tail;
    ma_uint64 next;

    if (pQueue == NULL || pJob == NULL) {
        return MA_INVALID_ARGS;
    }

    /* If we're running in synchronous mode we'll need to wait on a semaphore. */
    if ((pQueue->flags & MA_JOB_QUEUE_FLAG_NON_BLOCKING) == 0) {
        #ifndef MA_NO_THREADING
        {
            ma_semaphore_wait(&pQueue->sem);
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never get here. Should have been checked at initialization time. */
        }
        #endif
    }

    #ifndef MA_USE_EXPERIMENTAL_LOCK_FREE_JOB_QUEUE
    ma_spinlock_lock(&pQueue->lock);
    #endif
    {
        /*
        BUG: In lock-free mode, multiple threads can be in this section of code. The "head" variable in the loop below
        is stored. One thread can fall through to the freeing of this item while another is still using "head" for the
        retrieval of the "next" variable.

        The slot allocator might need to make use of some reference counting to ensure it's only truly freed when
        there are no more references to the item. This must be fixed before removing these locks.
        */

        /* Now we need to remove the root item from the list. */
        for (;;) {
            head = ma_atomic_load_64(&pQueue->head);
            tail = ma_atomic_load_64(&pQueue->tail);
            next = ma_atomic_load_64(&pQueue->pJobs[ma_job_extract_slot(head)].next);

            if (ma_job_toc_to_allocation(head) == ma_job_toc_to_allocation(ma_atomic_load_64(&pQueue->head))) {
                if (ma_job_extract_slot(head) == ma_job_extract_slot(tail)) {
                    if (ma_job_extract_slot(next) == 0xFFFF) {
                        #ifndef MA_USE_EXPERIMENTAL_LOCK_FREE_JOB_QUEUE
                        ma_spinlock_unlock(&pQueue->lock);
                        #endif
                        return MA_NO_DATA_AVAILABLE;
                    }
                    ma_job_queue_cas(&pQueue->tail, tail, ma_job_extract_slot(next));
                } else {
                    *pJob = pQueue->pJobs[ma_job_extract_slot(next)];
                    if (ma_job_queue_cas(&pQueue->head, head, ma_job_extract_slot(next))) {
                        break;
                    }
                }
            }
        }
    }
    #ifndef MA_USE_EXPERIMENTAL_LOCK_FREE_JOB_QUEUE
    ma_spinlock_unlock(&pQueue->lock);
    #endif

    ma_slot_allocator_free(&pQueue->allocator, head);

    /*
    If it's a quit job make sure it's put back on the queue to ensure other threads have an opportunity to detect it and terminate naturally. We
    could instead just leave it on the queue, but that would involve fiddling with the lock-free code above and I want to keep that as simple as
    possible.
    */
    if (pJob->toc.breakup.code == MA_JOB_TYPE_QUIT) {
        ma_job_queue_post(pQueue, pJob);
        return MA_CANCELLED;    /* Return a cancelled status just in case the thread is checking return codes and not properly checking for a quit job. */
    }

    return MA_SUCCESS;
}



/*******************************************************************************

Dynamic Linking

*******************************************************************************/
#ifdef MA_POSIX
    /* No need for dlfcn.h if we're not using runtime linking. */
    #ifndef MA_NO_RUNTIME_LINKING
        #include <dlfcn.h>
    #endif
#endif

MA_API ma_handle ma_dlopen(ma_log* pLog, const char* filename)
{
#ifndef MA_NO_RUNTIME_LINKING
    ma_handle handle;

    ma_log_postf(pLog, MA_LOG_LEVEL_DEBUG, "Loading library: %s\n", filename);

    #ifdef MA_WIN32
        /* From MSDN: Desktop applications cannot use LoadPackagedLibrary; if a desktop application calls this function it fails with APPMODEL_ERROR_NO_PACKAGE.*/
        #if !defined(MA_WIN32_UWP) || !(defined(WINAPI_FAMILY) && ((defined(WINAPI_FAMILY_PHONE_APP) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)))
            handle = (ma_handle)LoadLibraryA(filename);
        #else
            /* *sigh* It appears there is no ANSI version of LoadPackagedLibrary()... */
            WCHAR filenameW[4096];
            if (MultiByteToWideChar(CP_UTF8, 0, filename, -1, filenameW, sizeof(filenameW)) == 0) {
                handle = NULL;
            } else {
                handle = (ma_handle)LoadPackagedLibrary(filenameW, 0);
            }
        #endif
    #else
        handle = (ma_handle)dlopen(filename, RTLD_NOW);
    #endif

    /*
    I'm not considering failure to load a library an error nor a warning because seamlessly falling through to a lower-priority
    backend is a deliberate design choice. Instead I'm logging it as an informational message.
    */
    if (handle == NULL) {
        ma_log_postf(pLog, MA_LOG_LEVEL_INFO, "Failed to load library: %s\n", filename);
    }

    return handle;
#else
    /* Runtime linking is disabled. */
    (void)pLog;
    (void)filename;
    return NULL;
#endif
}

MA_API void ma_dlclose(ma_log* pLog, ma_handle handle)
{
#ifndef MA_NO_RUNTIME_LINKING
    #ifdef MA_WIN32
        FreeLibrary((HMODULE)handle);
    #else
        /* Hack for Android bug (see https://github.com/android/ndk/issues/360). Calling dlclose() pre-API 28 may segfault. */
        #if !defined(MA_ANDROID) || (defined(__ANDROID_API__) && __ANDROID_API__ >= 28)
        {
            dlclose((void*)handle);
        }
        #else
        {
            (void)handle;
        }
        #endif
    #endif

    (void)pLog;
#else
    /* Runtime linking is disabled. */
    (void)pLog;
    (void)handle;
#endif
}

MA_API ma_proc ma_dlsym(ma_log* pLog, ma_handle handle, const char* symbol)
{
#ifndef MA_NO_RUNTIME_LINKING
    ma_proc proc;

    ma_log_postf(pLog, MA_LOG_LEVEL_DEBUG, "Loading symbol: %s\n", symbol);

#ifdef _WIN32
    proc = (ma_proc)GetProcAddress((HMODULE)handle, symbol);
#else
#if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) || defined(__clang__)
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wpedantic"
#endif
    proc = (ma_proc)dlsym((void*)handle, symbol);
#if (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) || defined(__clang__)
    #pragma GCC diagnostic pop
#endif
#endif

    if (proc == NULL) {
        ma_log_postf(pLog, MA_LOG_LEVEL_WARNING, "Failed to load symbol: %s\n", symbol);
    }

    (void)pLog; /* It's possible for pContext to be unused. */
    return proc;
#else
    /* Runtime linking is disabled. */
    (void)pLog;
    (void)handle;
    (void)symbol;
    return NULL;
#endif
}



/************************************************************************************************************************************************************
*************************************************************************************************************************************************************

DEVICE I/O
==========

*************************************************************************************************************************************************************
************************************************************************************************************************************************************/

/* Disable run-time linking on certain backends and platforms. */
#ifndef MA_NO_RUNTIME_LINKING
    #if defined(MA_EMSCRIPTEN) || defined(MA_ORBIS) || defined(MA_PROSPERO)
        #define MA_NO_RUNTIME_LINKING
    #endif
#endif

#ifdef MA_APPLE
    #include <AvailabilityMacros.h>
#endif

#ifndef MA_NO_DEVICE_IO

#if defined(MA_APPLE) && (MAC_OS_X_VERSION_MIN_REQUIRED < 101200)
    #include <mach/mach_time.h> /* For mach_absolute_time() */
#endif

#ifdef MA_POSIX
    #include <sys/types.h>
    #include <unistd.h>

    /* No need for dlfcn.h if we're not using runtime linking. */
    #ifndef MA_NO_RUNTIME_LINKING
        #include <dlfcn.h>
    #endif
#endif

/* This must be set to at least 26. */
#ifndef MA_AAUDIO_MIN_ANDROID_SDK_VERSION
#define MA_AAUDIO_MIN_ANDROID_SDK_VERSION 27
#endif


MA_API void ma_device_info_add_native_data_format(ma_device_info* pDeviceInfo, ma_format format, ma_uint32 channels, ma_uint32 sampleRate, ma_uint32 flags)
{
    if (pDeviceInfo == NULL) {
        return;
    }

    if (pDeviceInfo->nativeDataFormatCount < ma_countof(pDeviceInfo->nativeDataFormats)) {
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = format;
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = channels;
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = sampleRate;
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = flags;
        pDeviceInfo->nativeDataFormatCount += 1;
    }
}


typedef struct
{
    ma_backend backend;
    const char* pName;
} ma_backend_info;

static ma_backend_info gBackendInfo[] = /* Indexed by the backend enum. Must be in the order backends are declared in the ma_backend enum. */
{
    {ma_backend_wasapi,     "WASAPI"},
    {ma_backend_dsound,     "DirectSound"},
    {ma_backend_winmm,      "WinMM"},
    {ma_backend_coreaudio,  "Core Audio"},
    {ma_backend_sndio,      "sndio"},
    {ma_backend_audio4,     "audio(4)"},
    {ma_backend_oss,        "OSS"},
    {ma_backend_pulseaudio, "PulseAudio"},
    {ma_backend_alsa,       "ALSA"},
    {ma_backend_jack,       "JACK"},
    {ma_backend_aaudio,     "AAudio"},
    {ma_backend_opensl,     "OpenSL|ES"},
    {ma_backend_webaudio,   "Web Audio"},
    {ma_backend_custom,     "Custom"},
    {ma_backend_null,       "Null"}
};

MA_API const char* ma_get_backend_name(ma_backend backend)
{
    if (backend < 0 || backend >= (int)ma_countof(gBackendInfo)) {
        return "Unknown";
    }

    return gBackendInfo[backend].pName;
}

MA_API ma_result ma_get_backend_from_name(const char* pBackendName, ma_backend* pBackend)
{
    size_t iBackend;

    if (pBackendName == NULL) {
        return MA_INVALID_ARGS;
    }

    for (iBackend = 0; iBackend < ma_countof(gBackendInfo); iBackend += 1) {
        if (ma_strcmp(pBackendName, gBackendInfo[iBackend].pName) == 0) {
            if (pBackend != NULL) {
                *pBackend = gBackendInfo[iBackend].backend;
            }

            return MA_SUCCESS;
        }
    }

    /* Getting here means the backend name is unknown. */
    return MA_INVALID_ARGS;
}

MA_API ma_bool32 ma_is_backend_enabled(ma_backend backend)
{
    /*
    This looks a little bit gross, but we want all backends to be included in the switch to avoid warnings on some compilers
    about some enums not being handled by the switch statement.
    */
    switch (backend)
    {
        case ma_backend_wasapi:
        #if defined(MA_HAS_WASAPI)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_dsound:
        #if defined(MA_HAS_DSOUND)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_winmm:
        #if defined(MA_HAS_WINMM)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_coreaudio:
        #if defined(MA_HAS_COREAUDIO)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_sndio:
        #if defined(MA_HAS_SNDIO)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_audio4:
        #if defined(MA_HAS_AUDIO4)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_oss:
        #if defined(MA_HAS_OSS)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_pulseaudio:
        #if defined(MA_HAS_PULSEAUDIO)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_alsa:
        #if defined(MA_HAS_ALSA)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_jack:
        #if defined(MA_HAS_JACK)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_aaudio:
        #if defined(MA_HAS_AAUDIO)
            #if defined(MA_ANDROID)
            {
                return ma_android_sdk_version() >= MA_AAUDIO_MIN_ANDROID_SDK_VERSION;
            }
            #else
                return MA_FALSE;
            #endif
        #else
            return MA_FALSE;
        #endif
        case ma_backend_opensl:
        #if defined(MA_HAS_OPENSL)
            #if defined(MA_ANDROID)
            {
                return ma_android_sdk_version() >= 9;
            }
            #else
                return MA_TRUE;
            #endif
        #else
            return MA_FALSE;
        #endif
        case ma_backend_webaudio:
        #if defined(MA_HAS_WEBAUDIO)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_custom:
        #if defined(MA_HAS_CUSTOM)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
        case ma_backend_null:
        #if defined(MA_HAS_NULL)
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif

        default: return MA_FALSE;
    }
}

MA_API ma_result ma_get_enabled_backends(ma_backend* pBackends, size_t backendCap, size_t* pBackendCount)
{
    size_t backendCount;
    size_t iBackend;
    ma_result result = MA_SUCCESS;

    if (pBackendCount == NULL) {
        return MA_INVALID_ARGS;
    }

    backendCount = 0;

    for (iBackend = 0; iBackend <= ma_backend_null; iBackend += 1) {
        ma_backend backend = (ma_backend)iBackend;

        if (ma_is_backend_enabled(backend)) {
            /* The backend is enabled. Try adding it to the list. If there's no room, MA_NO_SPACE needs to be returned. */
            if (backendCount == backendCap) {
                result = MA_NO_SPACE;
                break;
            } else {
                pBackends[backendCount] = backend;
                backendCount += 1;
            }
        }
    }

    if (pBackendCount != NULL) {
        *pBackendCount = backendCount;
    }

    return result;
}

MA_API ma_bool32 ma_is_loopback_supported(ma_backend backend)
{
    switch (backend)
    {
        case ma_backend_wasapi:     return MA_TRUE;
        case ma_backend_dsound:     return MA_FALSE;
        case ma_backend_winmm:      return MA_FALSE;
        case ma_backend_coreaudio:  return MA_FALSE;
        case ma_backend_sndio:      return MA_FALSE;
        case ma_backend_audio4:     return MA_FALSE;
        case ma_backend_oss:        return MA_FALSE;
        case ma_backend_pulseaudio: return MA_FALSE;
        case ma_backend_alsa:       return MA_FALSE;
        case ma_backend_jack:       return MA_FALSE;
        case ma_backend_aaudio:     return MA_FALSE;
        case ma_backend_opensl:     return MA_FALSE;
        case ma_backend_webaudio:   return MA_FALSE;
        case ma_backend_custom:     return MA_FALSE;    /* <-- Will depend on the implementation of the backend. */
        case ma_backend_null:       return MA_FALSE;
        default:                    return MA_FALSE;
    }
}



#if defined(MA_WIN32)
/* WASAPI error codes. */
#define MA_AUDCLNT_E_NOT_INITIALIZED              ((HRESULT)0x88890001)
#define MA_AUDCLNT_E_ALREADY_INITIALIZED          ((HRESULT)0x88890002)
#define MA_AUDCLNT_E_WRONG_ENDPOINT_TYPE          ((HRESULT)0x88890003)
#define MA_AUDCLNT_E_DEVICE_INVALIDATED           ((HRESULT)0x88890004)
#define MA_AUDCLNT_E_NOT_STOPPED                  ((HRESULT)0x88890005)
#define MA_AUDCLNT_E_BUFFER_TOO_LARGE             ((HRESULT)0x88890006)
#define MA_AUDCLNT_E_OUT_OF_ORDER                 ((HRESULT)0x88890007)
#define MA_AUDCLNT_E_UNSUPPORTED_FORMAT           ((HRESULT)0x88890008)
#define MA_AUDCLNT_E_INVALID_SIZE                 ((HRESULT)0x88890009)
#define MA_AUDCLNT_E_DEVICE_IN_USE                ((HRESULT)0x8889000A)
#define MA_AUDCLNT_E_BUFFER_OPERATION_PENDING     ((HRESULT)0x8889000B)
#define MA_AUDCLNT_E_THREAD_NOT_REGISTERED        ((HRESULT)0x8889000C)
#define MA_AUDCLNT_E_NO_SINGLE_PROCESS            ((HRESULT)0x8889000D)
#define MA_AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED   ((HRESULT)0x8889000E)
#define MA_AUDCLNT_E_ENDPOINT_CREATE_FAILED       ((HRESULT)0x8889000F)
#define MA_AUDCLNT_E_SERVICE_NOT_RUNNING          ((HRESULT)0x88890010)
#define MA_AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED     ((HRESULT)0x88890011)
#define MA_AUDCLNT_E_EXCLUSIVE_MODE_ONLY          ((HRESULT)0x88890012)
#define MA_AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL ((HRESULT)0x88890013)
#define MA_AUDCLNT_E_EVENTHANDLE_NOT_SET          ((HRESULT)0x88890014)
#define MA_AUDCLNT_E_INCORRECT_BUFFER_SIZE        ((HRESULT)0x88890015)
#define MA_AUDCLNT_E_BUFFER_SIZE_ERROR            ((HRESULT)0x88890016)
#define MA_AUDCLNT_E_CPUUSAGE_EXCEEDED            ((HRESULT)0x88890017)
#define MA_AUDCLNT_E_BUFFER_ERROR                 ((HRESULT)0x88890018)
#define MA_AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED      ((HRESULT)0x88890019)
#define MA_AUDCLNT_E_INVALID_DEVICE_PERIOD        ((HRESULT)0x88890020)
#define MA_AUDCLNT_E_INVALID_STREAM_FLAG          ((HRESULT)0x88890021)
#define MA_AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE ((HRESULT)0x88890022)
#define MA_AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES     ((HRESULT)0x88890023)
#define MA_AUDCLNT_E_OFFLOAD_MODE_ONLY            ((HRESULT)0x88890024)
#define MA_AUDCLNT_E_NONOFFLOAD_MODE_ONLY         ((HRESULT)0x88890025)
#define MA_AUDCLNT_E_RESOURCES_INVALIDATED        ((HRESULT)0x88890026)
#define MA_AUDCLNT_E_RAW_MODE_UNSUPPORTED         ((HRESULT)0x88890027)
#define MA_AUDCLNT_E_ENGINE_PERIODICITY_LOCKED    ((HRESULT)0x88890028)
#define MA_AUDCLNT_E_ENGINE_FORMAT_LOCKED         ((HRESULT)0x88890029)
#define MA_AUDCLNT_E_HEADTRACKING_ENABLED         ((HRESULT)0x88890030)
#define MA_AUDCLNT_E_HEADTRACKING_UNSUPPORTED     ((HRESULT)0x88890040)
#define MA_AUDCLNT_S_BUFFER_EMPTY                 ((HRESULT)0x08890001)
#define MA_AUDCLNT_S_THREAD_ALREADY_REGISTERED    ((HRESULT)0x08890002)
#define MA_AUDCLNT_S_POSITION_STALLED             ((HRESULT)0x08890003)

#define MA_DS_OK                                  ((HRESULT)0)
#define MA_DS_NO_VIRTUALIZATION                   ((HRESULT)0x0878000A)
#define MA_DSERR_ALLOCATED                        ((HRESULT)0x8878000A)
#define MA_DSERR_CONTROLUNAVAIL                   ((HRESULT)0x8878001E)
#define MA_DSERR_INVALIDPARAM                     ((HRESULT)0x80070057) /*E_INVALIDARG*/
#define MA_DSERR_INVALIDCALL                      ((HRESULT)0x88780032)
#define MA_DSERR_GENERIC                          ((HRESULT)0x80004005) /*E_FAIL*/
#define MA_DSERR_PRIOLEVELNEEDED                  ((HRESULT)0x88780046)
#define MA_DSERR_OUTOFMEMORY                      ((HRESULT)0x8007000E) /*E_OUTOFMEMORY*/
#define MA_DSERR_BADFORMAT                        ((HRESULT)0x88780064)
#define MA_DSERR_UNSUPPORTED                      ((HRESULT)0x80004001) /*E_NOTIMPL*/
#define MA_DSERR_NODRIVER                         ((HRESULT)0x88780078)
#define MA_DSERR_ALREADYINITIALIZED               ((HRESULT)0x88780082)
#define MA_DSERR_NOAGGREGATION                    ((HRESULT)0x80040110) /*CLASS_E_NOAGGREGATION*/
#define MA_DSERR_BUFFERLOST                       ((HRESULT)0x88780096)
#define MA_DSERR_OTHERAPPHASPRIO                  ((HRESULT)0x887800A0)
#define MA_DSERR_UNINITIALIZED                    ((HRESULT)0x887800AA)
#define MA_DSERR_NOINTERFACE                      ((HRESULT)0x80004002) /*E_NOINTERFACE*/
#define MA_DSERR_ACCESSDENIED                     ((HRESULT)0x80070005) /*E_ACCESSDENIED*/
#define MA_DSERR_BUFFERTOOSMALL                   ((HRESULT)0x887800B4)
#define MA_DSERR_DS8_REQUIRED                     ((HRESULT)0x887800BE)
#define MA_DSERR_SENDLOOP                         ((HRESULT)0x887800C8)
#define MA_DSERR_BADSENDBUFFERGUID                ((HRESULT)0x887800D2)
#define MA_DSERR_OBJECTNOTFOUND                   ((HRESULT)0x88781161)
#define MA_DSERR_FXUNAVAILABLE                    ((HRESULT)0x887800DC)

static ma_result ma_result_from_HRESULT(HRESULT hr)
{
    switch (hr)
    {
        case NOERROR:                                   return MA_SUCCESS;
        /*case S_OK:                                      return MA_SUCCESS;*/

        case E_POINTER:                                 return MA_INVALID_ARGS;
        case E_UNEXPECTED:                              return MA_ERROR;
        case E_NOTIMPL:                                 return MA_NOT_IMPLEMENTED;
        case E_OUTOFMEMORY:                             return MA_OUT_OF_MEMORY;
        case E_INVALIDARG:                              return MA_INVALID_ARGS;
        case E_NOINTERFACE:                             return MA_API_NOT_FOUND;
        case E_HANDLE:                                  return MA_INVALID_ARGS;
        case E_ABORT:                                   return MA_ERROR;
        case E_FAIL:                                    return MA_ERROR;
        case E_ACCESSDENIED:                            return MA_ACCESS_DENIED;

        /* WASAPI */
        case MA_AUDCLNT_E_NOT_INITIALIZED:              return MA_DEVICE_NOT_INITIALIZED;
        case MA_AUDCLNT_E_ALREADY_INITIALIZED:          return MA_DEVICE_ALREADY_INITIALIZED;
        case MA_AUDCLNT_E_WRONG_ENDPOINT_TYPE:          return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_DEVICE_INVALIDATED:           return MA_UNAVAILABLE;
        case MA_AUDCLNT_E_NOT_STOPPED:                  return MA_DEVICE_NOT_STOPPED;
        case MA_AUDCLNT_E_BUFFER_TOO_LARGE:             return MA_TOO_BIG;
        case MA_AUDCLNT_E_OUT_OF_ORDER:                 return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_UNSUPPORTED_FORMAT:           return MA_FORMAT_NOT_SUPPORTED;
        case MA_AUDCLNT_E_INVALID_SIZE:                 return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_DEVICE_IN_USE:                return MA_BUSY;
        case MA_AUDCLNT_E_BUFFER_OPERATION_PENDING:     return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_THREAD_NOT_REGISTERED:        return MA_DOES_NOT_EXIST;
        case MA_AUDCLNT_E_NO_SINGLE_PROCESS:            return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED:   return MA_SHARE_MODE_NOT_SUPPORTED;
        case MA_AUDCLNT_E_ENDPOINT_CREATE_FAILED:       return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
        case MA_AUDCLNT_E_SERVICE_NOT_RUNNING:          return MA_NOT_CONNECTED;
        case MA_AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED:     return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_EXCLUSIVE_MODE_ONLY:          return MA_SHARE_MODE_NOT_SUPPORTED;
        case MA_AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL: return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_EVENTHANDLE_NOT_SET:          return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_INCORRECT_BUFFER_SIZE:        return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_BUFFER_SIZE_ERROR:            return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_CPUUSAGE_EXCEEDED:            return MA_ERROR;
        case MA_AUDCLNT_E_BUFFER_ERROR:                 return MA_ERROR;
        case MA_AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED:      return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_INVALID_DEVICE_PERIOD:        return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_INVALID_STREAM_FLAG:          return MA_INVALID_ARGS;
        case MA_AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE: return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_OUT_OF_OFFLOAD_RESOURCES:     return MA_OUT_OF_MEMORY;
        case MA_AUDCLNT_E_OFFLOAD_MODE_ONLY:            return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_NONOFFLOAD_MODE_ONLY:         return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_RESOURCES_INVALIDATED:        return MA_INVALID_DATA;
        case MA_AUDCLNT_E_RAW_MODE_UNSUPPORTED:         return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_ENGINE_PERIODICITY_LOCKED:    return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_ENGINE_FORMAT_LOCKED:         return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_HEADTRACKING_ENABLED:         return MA_INVALID_OPERATION;
        case MA_AUDCLNT_E_HEADTRACKING_UNSUPPORTED:     return MA_INVALID_OPERATION;
        case MA_AUDCLNT_S_BUFFER_EMPTY:                 return MA_NO_SPACE;
        case MA_AUDCLNT_S_THREAD_ALREADY_REGISTERED:    return MA_ALREADY_EXISTS;
        case MA_AUDCLNT_S_POSITION_STALLED:             return MA_ERROR;

        /* DirectSound */
        /*case MA_DS_OK:                                  return MA_SUCCESS;*/          /* S_OK */
        case MA_DS_NO_VIRTUALIZATION:                   return MA_SUCCESS;
        case MA_DSERR_ALLOCATED:                        return MA_ALREADY_IN_USE;
        case MA_DSERR_CONTROLUNAVAIL:                   return MA_INVALID_OPERATION;
        /*case MA_DSERR_INVALIDPARAM:                    return MA_INVALID_ARGS;*/      /* E_INVALIDARG */
        case MA_DSERR_INVALIDCALL:                      return MA_INVALID_OPERATION;
        /*case MA_DSERR_GENERIC:                          return MA_ERROR;*/            /* E_FAIL */
        case MA_DSERR_PRIOLEVELNEEDED:                  return MA_INVALID_OPERATION;
        /*case MA_DSERR_OUTOFMEMORY:                      return MA_OUT_OF_MEMORY;*/    /* E_OUTOFMEMORY */
        case MA_DSERR_BADFORMAT:                        return MA_FORMAT_NOT_SUPPORTED;
        /*case MA_DSERR_UNSUPPORTED:                      return MA_NOT_IMPLEMENTED;*/  /* E_NOTIMPL */
        case MA_DSERR_NODRIVER:                         return MA_FAILED_TO_INIT_BACKEND;
        case MA_DSERR_ALREADYINITIALIZED:               return MA_DEVICE_ALREADY_INITIALIZED;
        case MA_DSERR_NOAGGREGATION:                    return MA_ERROR;
        case MA_DSERR_BUFFERLOST:                       return MA_UNAVAILABLE;
        case MA_DSERR_OTHERAPPHASPRIO:                  return MA_ACCESS_DENIED;
        case MA_DSERR_UNINITIALIZED:                    return MA_DEVICE_NOT_INITIALIZED;
        /*case MA_DSERR_NOINTERFACE:                      return MA_API_NOT_FOUND;*/    /* E_NOINTERFACE */
        /*case MA_DSERR_ACCESSDENIED:                     return MA_ACCESS_DENIED;*/    /* E_ACCESSDENIED */
        case MA_DSERR_BUFFERTOOSMALL:                   return MA_NO_SPACE;
        case MA_DSERR_DS8_REQUIRED:                     return MA_INVALID_OPERATION;
        case MA_DSERR_SENDLOOP:                         return MA_DEADLOCK;
        case MA_DSERR_BADSENDBUFFERGUID:                return MA_INVALID_ARGS;
        case MA_DSERR_OBJECTNOTFOUND:                   return MA_NO_DEVICE;
        case MA_DSERR_FXUNAVAILABLE:                    return MA_UNAVAILABLE;

        default:                                        return MA_ERROR;
    }
}

/* PROPVARIANT */
#define MA_VT_LPWSTR    31
#define MA_VT_BLOB      65

#if defined(_MSC_VER) && !defined(__clang__)
    #pragma warning(push)
    #pragma warning(disable:4201)   /* nonstandard extension used: nameless struct/union */
#elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wpedantic" /* For ISO C99 doesn't support unnamed structs/unions [-Wpedantic] */
    #if defined(__clang__)
        #pragma GCC diagnostic ignored "-Wc11-extensions"   /* anonymous unions are a C11 extension */
    #endif
#endif
typedef struct
{
    WORD vt;
    WORD wReserved1;
    WORD wReserved2;
    WORD wReserved3;
    union
    {
        struct
        {
            ULONG cbSize;
            BYTE* pBlobData;
        } blob;
        WCHAR* pwszVal;
        char pad[16];   /* Just to ensure the size of the struct matches the official version. */
    };
} MA_PROPVARIANT;
#if defined(_MSC_VER) && !defined(__clang__)
    #pragma warning(pop)
#elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
    #pragma GCC diagnostic pop
#endif

typedef HRESULT (WINAPI * MA_PFN_CoInitialize)(void* pvReserved);
typedef HRESULT (WINAPI * MA_PFN_CoInitializeEx)(void* pvReserved, DWORD  dwCoInit);
typedef void    (WINAPI * MA_PFN_CoUninitialize)(void);
typedef HRESULT (WINAPI * MA_PFN_CoCreateInstance)(const IID* rclsid, void* pUnkOuter, DWORD dwClsContext, const IID* riid, void* ppv);
typedef void    (WINAPI * MA_PFN_CoTaskMemFree)(void* pv);
typedef HRESULT (WINAPI * MA_PFN_PropVariantClear)(MA_PROPVARIANT *pvar);
typedef int     (WINAPI * MA_PFN_StringFromGUID2)(const GUID* const rguid, WCHAR* lpsz, int cchMax);

typedef HWND    (WINAPI * MA_PFN_GetForegroundWindow)(void);
typedef HWND    (WINAPI * MA_PFN_GetDesktopWindow)(void);

#if defined(MA_WIN32_DESKTOP)
/* Microsoft documents these APIs as returning LSTATUS, but the Win32 API shipping with some compilers do not define it. It's just a LONG. */
typedef LONG    (WINAPI * MA_PFN_RegOpenKeyExA)(HKEY hKey, const char* lpSubKey, DWORD ulOptions, DWORD samDesired, HKEY* phkResult);
typedef LONG    (WINAPI * MA_PFN_RegCloseKey)(HKEY hKey);
typedef LONG    (WINAPI * MA_PFN_RegQueryValueExA)(HKEY hKey, const char* lpValueName, DWORD* lpReserved, DWORD* lpType, BYTE* lpData, DWORD* lpcbData);
#endif  /* MA_WIN32_DESKTOP */

MA_API size_t ma_strlen_WCHAR(const WCHAR* str)
{
    size_t len = 0;
    while (str[len] != '\0') {
        len += 1;
    }

    return len;
}

MA_API int ma_strcmp_WCHAR(const WCHAR *s1, const WCHAR *s2)
{
    while (*s1 != '\0' && *s1 == *s2) {
        s1 += 1;
        s2 += 1;
    }

    return *s1 - *s2;
}

MA_API int ma_strcpy_s_WCHAR(WCHAR* dst, size_t dstCap, const WCHAR* src)
{
    size_t i;

    if (dst == 0) {
        return 22;
    }
    if (dstCap == 0) {
        return 34;
    }
    if (src == 0) {
        dst[0] = '\0';
        return 22;
    }

    for (i = 0; i < dstCap && src[i] != '\0'; ++i) {
        dst[i] = src[i];
    }

    if (i < dstCap) {
        dst[i] = '\0';
        return 0;
    }

    dst[0] = '\0';
    return 34;
}
#endif  /* MA_WIN32 */


#define MA_DEFAULT_PLAYBACK_DEVICE_NAME    "Default Playback Device"
#define MA_DEFAULT_CAPTURE_DEVICE_NAME     "Default Capture Device"




/*******************************************************************************

Timing

*******************************************************************************/
#if defined(MA_WIN32) && !defined(MA_POSIX)
    static LARGE_INTEGER g_ma_TimerFrequency;   /* <-- Initialized to zero since it's static. */
    static void ma_timer_init(ma_timer* pTimer)
    {
        LARGE_INTEGER counter;

        if (g_ma_TimerFrequency.QuadPart == 0) {
            QueryPerformanceFrequency(&g_ma_TimerFrequency);
        }

        QueryPerformanceCounter(&counter);
        pTimer->counter = counter.QuadPart;
    }

    static double ma_timer_get_time_in_seconds(ma_timer* pTimer)
    {
        LARGE_INTEGER counter;
        if (!QueryPerformanceCounter(&counter)) {
            return 0;
        }

        return (double)(counter.QuadPart - pTimer->counter) / g_ma_TimerFrequency.QuadPart;
    }
#elif defined(MA_APPLE) && (MAC_OS_X_VERSION_MIN_REQUIRED < 101200)
    static ma_uint64 g_ma_TimerFrequency = 0;
    static void ma_timer_init(ma_timer* pTimer)
    {
        mach_timebase_info_data_t baseTime;
        mach_timebase_info(&baseTime);
        g_ma_TimerFrequency = (baseTime.denom * 1e9) / baseTime.numer;

        pTimer->counter = mach_absolute_time();
    }

    static double ma_timer_get_time_in_seconds(ma_timer* pTimer)
    {
        ma_uint64 newTimeCounter = mach_absolute_time();
        ma_uint64 oldTimeCounter = pTimer->counter;

        return (newTimeCounter - oldTimeCounter) / g_ma_TimerFrequency;
    }
#elif defined(MA_EMSCRIPTEN)
    static MA_INLINE void ma_timer_init(ma_timer* pTimer)
    {
        pTimer->counterD = emscripten_get_now();
    }

    static MA_INLINE double ma_timer_get_time_in_seconds(ma_timer* pTimer)
    {
        return (emscripten_get_now() - pTimer->counterD) / 1000;    /* Emscripten is in milliseconds. */
    }
#else
    #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309L
        #if defined(CLOCK_MONOTONIC)
            #define MA_CLOCK_ID CLOCK_MONOTONIC
        #else
            #define MA_CLOCK_ID CLOCK_REALTIME
        #endif

        static void ma_timer_init(ma_timer* pTimer)
        {
            struct timespec newTime;
            clock_gettime(MA_CLOCK_ID, &newTime);

            pTimer->counter = (newTime.tv_sec * 1000000000) + newTime.tv_nsec;
        }

        static double ma_timer_get_time_in_seconds(ma_timer* pTimer)
        {
            ma_uint64 newTimeCounter;
            ma_uint64 oldTimeCounter;

            struct timespec newTime;
            clock_gettime(MA_CLOCK_ID, &newTime);

            newTimeCounter = (newTime.tv_sec * 1000000000) + newTime.tv_nsec;
            oldTimeCounter = pTimer->counter;

            return (newTimeCounter - oldTimeCounter) / 1000000000.0;
        }
    #else
        static void ma_timer_init(ma_timer* pTimer)
        {
            struct timeval newTime;
            gettimeofday(&newTime, NULL);

            pTimer->counter = (newTime.tv_sec * 1000000) + newTime.tv_usec;
        }

        static double ma_timer_get_time_in_seconds(ma_timer* pTimer)
        {
            ma_uint64 newTimeCounter;
            ma_uint64 oldTimeCounter;

            struct timeval newTime;
            gettimeofday(&newTime, NULL);

            newTimeCounter = (newTime.tv_sec * 1000000) + newTime.tv_usec;
            oldTimeCounter = pTimer->counter;

            return (newTimeCounter - oldTimeCounter) / 1000000.0;
        }
    #endif
#endif



#if 0
static ma_uint32 ma_get_closest_standard_sample_rate(ma_uint32 sampleRateIn)
{
    ma_uint32 closestRate = 0;
    ma_uint32 closestDiff = 0xFFFFFFFF;
    size_t iStandardRate;

    for (iStandardRate = 0; iStandardRate < ma_countof(g_maStandardSampleRatePriorities); ++iStandardRate) {
        ma_uint32 standardRate = g_maStandardSampleRatePriorities[iStandardRate];
        ma_uint32 diff;

        if (sampleRateIn > standardRate) {
            diff = sampleRateIn - standardRate;
        } else {
            diff = standardRate - sampleRateIn;
        }

        if (diff == 0) {
            return standardRate;    /* The input sample rate is a standard rate. */
        }

        if (closestDiff > diff) {
            closestDiff = diff;
            closestRate = standardRate;
        }
    }

    return closestRate;
}
#endif


static MA_INLINE unsigned int ma_device_disable_denormals(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (!pDevice->noDisableDenormals) {
        return ma_disable_denormals();
    } else {
        return 0;
    }
}

static MA_INLINE void ma_device_restore_denormals(ma_device* pDevice, unsigned int prevState)
{
    MA_ASSERT(pDevice != NULL);

    if (!pDevice->noDisableDenormals) {
        ma_restore_denormals(prevState);
    } else {
        /* Do nothing. */
        (void)prevState;
    }
}

static ma_device_notification ma_device_notification_init(ma_device* pDevice, ma_device_notification_type type)
{
    ma_device_notification notification;

    MA_ZERO_OBJECT(&notification);
    notification.pDevice = pDevice;
    notification.type    = type;

    return notification;
}

static void ma_device__on_notification(ma_device_notification notification)
{
    MA_ASSERT(notification.pDevice != NULL);

    if (notification.pDevice->onNotification != NULL) {
        notification.pDevice->onNotification(&notification);
    }

    /* TEMP FOR COMPATIBILITY: If it's a stopped notification, fire the onStop callback as well. This is only for backwards compatibility and will be removed. */
    if (notification.pDevice->onStop != NULL && notification.type == ma_device_notification_type_stopped) {
        notification.pDevice->onStop(notification.pDevice);
    }
}

static void ma_device__on_notification_started(ma_device* pDevice)
{
    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_started));
}

static void ma_device__on_notification_stopped(ma_device* pDevice)
{
    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_stopped));
}

/* Not all platforms support reroute notifications. */
#if !defined(MA_EMSCRIPTEN)
static void ma_device__on_notification_rerouted(ma_device* pDevice)
{
    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_rerouted));
}
#endif

#if defined(MA_EMSCRIPTEN)
#ifdef __cplusplus
extern "C" {
#endif
void EMSCRIPTEN_KEEPALIVE ma_device__on_notification_unlocked(ma_device* pDevice)
{
    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_unlocked));
}
#ifdef __cplusplus
}
#endif
#endif


static void ma_device__on_data_inner(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pDevice->onData != NULL);

    if (!pDevice->noPreSilencedOutputBuffer && pFramesOut != NULL) {
        ma_silence_pcm_frames(pFramesOut, frameCount, pDevice->playback.format, pDevice->playback.channels);
    }

    pDevice->onData(pDevice, pFramesOut, pFramesIn, frameCount);
}

static void ma_device__on_data(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
    MA_ASSERT(pDevice != NULL);

    /* Don't read more data from the client if we're in the process of stopping. */
    if (ma_device_get_state(pDevice) == ma_device_state_stopping) {
        return;
    }

    if (pDevice->noFixedSizedCallback) {
        /* Fast path. Not using a fixed sized callback. Process directly from the specified buffers. */
        ma_device__on_data_inner(pDevice, pFramesOut, pFramesIn, frameCount);
    } else {
        /* Slow path. Using a fixed sized callback. Need to use the intermediary buffer. */
        ma_uint32 totalFramesProcessed = 0;

        while (totalFramesProcessed < frameCount) {
            ma_uint32 totalFramesRemaining = frameCount - totalFramesProcessed;
            ma_uint32 framesToProcessThisIteration = 0;

            if (pFramesIn != NULL) {
                /* Capturing. Write to the intermediary buffer. If there's no room, fire the callback to empty it. */
                if (pDevice->capture.intermediaryBufferLen < pDevice->capture.intermediaryBufferCap) {
                    /* There's some room left in the intermediary buffer. Write to it without firing the callback. */
                    framesToProcessThisIteration = totalFramesRemaining;
                    if (framesToProcessThisIteration > pDevice->capture.intermediaryBufferCap - pDevice->capture.intermediaryBufferLen) {
                        framesToProcessThisIteration = pDevice->capture.intermediaryBufferCap - pDevice->capture.intermediaryBufferLen;
                    }

                    ma_copy_pcm_frames(
                        ma_offset_pcm_frames_ptr(pDevice->capture.pIntermediaryBuffer, pDevice->capture.intermediaryBufferLen, pDevice->capture.format, pDevice->capture.channels),
                        ma_offset_pcm_frames_const_ptr(pFramesIn, totalFramesProcessed, pDevice->capture.format, pDevice->capture.channels),
                        framesToProcessThisIteration,
                        pDevice->capture.format, pDevice->capture.channels);

                    pDevice->capture.intermediaryBufferLen += framesToProcessThisIteration;
                }

                if (pDevice->capture.intermediaryBufferLen == pDevice->capture.intermediaryBufferCap) {
                    /* No room left in the intermediary buffer. Fire the data callback. */
                    if (pDevice->type == ma_device_type_duplex) {
                        /* We'll do the duplex data callback later after we've processed the playback data. */
                    } else {
                        ma_device__on_data_inner(pDevice, NULL, pDevice->capture.pIntermediaryBuffer, pDevice->capture.intermediaryBufferCap);

                        /* The intermediary buffer has just been drained. */
                        pDevice->capture.intermediaryBufferLen = 0;
                    }
                }
            }

            if (pFramesOut != NULL) {
                /* Playing back. Read from the intermediary buffer. If there's nothing in it, fire the callback to fill it. */
                if (pDevice->playback.intermediaryBufferLen > 0) {
                    /* There's some content in the intermediary buffer. Read from that without firing the callback. */
                    if (pDevice->type == ma_device_type_duplex) {
                        /* The frames processed this iteration for a duplex device will always be based on the capture side. Leave it unmodified. */
                    } else {
                        framesToProcessThisIteration = totalFramesRemaining;
                        if (framesToProcessThisIteration > pDevice->playback.intermediaryBufferLen) {
                            framesToProcessThisIteration = pDevice->playback.intermediaryBufferLen;
                        }
                    }

                    ma_copy_pcm_frames(
                        ma_offset_pcm_frames_ptr(pFramesOut, totalFramesProcessed, pDevice->playback.format, pDevice->playback.channels),
                        ma_offset_pcm_frames_ptr(pDevice->playback.pIntermediaryBuffer, pDevice->playback.intermediaryBufferCap - pDevice->playback.intermediaryBufferLen, pDevice->playback.format, pDevice->playback.channels),
                        framesToProcessThisIteration,
                        pDevice->playback.format, pDevice->playback.channels);

                    pDevice->playback.intermediaryBufferLen -= framesToProcessThisIteration;
                }

                if (pDevice->playback.intermediaryBufferLen == 0) {
                    /* There's nothing in the intermediary buffer. Fire the data callback to fill it. */
                    if (pDevice->type == ma_device_type_duplex) {
                        /* In duplex mode, the data callback will be fired later. Nothing to do here. */
                    } else {
                        ma_device__on_data_inner(pDevice, pDevice->playback.pIntermediaryBuffer, NULL, pDevice->playback.intermediaryBufferCap);

                        /* The intermediary buffer has just been filled. */
                        pDevice->playback.intermediaryBufferLen = pDevice->playback.intermediaryBufferCap;
                    }
                }
            }

            /* If we're in duplex mode we might need to do a refill of the data. */
            if (pDevice->type == ma_device_type_duplex) {
                if (pDevice->capture.intermediaryBufferLen == pDevice->capture.intermediaryBufferCap) {
                    ma_device__on_data_inner(pDevice, pDevice->playback.pIntermediaryBuffer, pDevice->capture.pIntermediaryBuffer, pDevice->capture.intermediaryBufferCap);

                    pDevice->playback.intermediaryBufferLen = pDevice->playback.intermediaryBufferCap;  /* The playback buffer will have just been filled. */
                    pDevice->capture.intermediaryBufferLen  = 0;                                        /* The intermediary buffer has just been drained. */
                }
            }

            /* Make sure this is only incremented once in the duplex case. */
            totalFramesProcessed += framesToProcessThisIteration;
        }
    }
}

static void ma_device__handle_data_callback(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
    float masterVolumeFactor;

    ma_device_get_master_volume(pDevice, &masterVolumeFactor);  /* Use ma_device_get_master_volume() to ensure the volume is loaded atomically. */

    if (pDevice->onData) {
        unsigned int prevDenormalState = ma_device_disable_denormals(pDevice);
        {
            /* Volume control of input makes things a bit awkward because the input buffer is read-only. We'll need to use a temp buffer and loop in this case. */
            if (pFramesIn != NULL && masterVolumeFactor != 1) {
                ma_uint8 tempFramesIn[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
                ma_uint32 bpfCapture  = ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels);
                ma_uint32 bpfPlayback = ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels);
                ma_uint32 totalFramesProcessed = 0;
                while (totalFramesProcessed < frameCount) {
                    ma_uint32 framesToProcessThisIteration = frameCount - totalFramesProcessed;
                    if (framesToProcessThisIteration > sizeof(tempFramesIn)/bpfCapture) {
                        framesToProcessThisIteration = sizeof(tempFramesIn)/bpfCapture;
                    }

                    ma_copy_and_apply_volume_factor_pcm_frames(tempFramesIn, ma_offset_ptr(pFramesIn, totalFramesProcessed*bpfCapture), framesToProcessThisIteration, pDevice->capture.format, pDevice->capture.channels, masterVolumeFactor);

                    ma_device__on_data(pDevice, ma_offset_ptr(pFramesOut, totalFramesProcessed*bpfPlayback), tempFramesIn, framesToProcessThisIteration);

                    totalFramesProcessed += framesToProcessThisIteration;
                }
            } else {
                ma_device__on_data(pDevice, pFramesOut, pFramesIn, frameCount);
            }

            /* Volume control and clipping for playback devices. */
            if (pFramesOut != NULL) {
                if (masterVolumeFactor != 1) {
                    if (pFramesIn == NULL) {    /* <-- In full-duplex situations, the volume will have been applied to the input samples before the data callback. Applying it again post-callback will incorrectly compound it. */
                        ma_apply_volume_factor_pcm_frames(pFramesOut, frameCount, pDevice->playback.format, pDevice->playback.channels, masterVolumeFactor);
                    }
                }

                if (!pDevice->noClip && pDevice->playback.format == ma_format_f32) {
                    ma_clip_samples_f32((float*)pFramesOut, (const float*)pFramesOut, frameCount * pDevice->playback.channels);   /* Intentionally specifying the same pointer for both input and output for in-place processing. */
                }
            }
        }
        ma_device_restore_denormals(pDevice, prevDenormalState);
    } else {
        /* No data callback. Just silence the output. */
        if (pFramesOut != NULL) {
            ma_silence_pcm_frames(pFramesOut, frameCount, pDevice->playback.format, pDevice->playback.channels);
        }
    }
}



/* A helper function for reading sample data from the client. */
static void ma_device__read_frames_from_client(ma_device* pDevice, ma_uint32 frameCount, void* pFramesOut)
{
    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(frameCount > 0);
    MA_ASSERT(pFramesOut != NULL);

    if (pDevice->playback.converter.isPassthrough) {
        ma_device__handle_data_callback(pDevice, pFramesOut, NULL, frameCount);
    } else {
        ma_result result;
        ma_uint64 totalFramesReadOut;
        void* pRunningFramesOut;

        totalFramesReadOut = 0;
        pRunningFramesOut  = pFramesOut;

        /*
        We run slightly different logic depending on whether or not we're using a heap-allocated
        buffer for caching input data. This will be the case if the data converter does not have
        the ability to retrieve the required input frame count for a given output frame count.
        */
        if (pDevice->playback.pInputCache != NULL) {
            while (totalFramesReadOut < frameCount) {
                ma_uint64 framesToReadThisIterationIn;
                ma_uint64 framesToReadThisIterationOut;

                /* If there's any data available in the cache, that needs to get processed first. */
                if (pDevice->playback.inputCacheRemaining > 0) {
                    framesToReadThisIterationOut = (frameCount - totalFramesReadOut);
                    framesToReadThisIterationIn  = framesToReadThisIterationOut;
                    if (framesToReadThisIterationIn > pDevice->playback.inputCacheRemaining) {
                        framesToReadThisIterationIn = pDevice->playback.inputCacheRemaining;
                    }

                    result = ma_data_converter_process_pcm_frames(&pDevice->playback.converter, ma_offset_pcm_frames_ptr(pDevice->playback.pInputCache, pDevice->playback.inputCacheConsumed, pDevice->playback.format, pDevice->playback.channels), &framesToReadThisIterationIn, pRunningFramesOut, &framesToReadThisIterationOut);
                    if (result != MA_SUCCESS) {
                        break;
                    }

                    pDevice->playback.inputCacheConsumed  += framesToReadThisIterationIn;
                    pDevice->playback.inputCacheRemaining -= framesToReadThisIterationIn;

                    totalFramesReadOut += framesToReadThisIterationOut;
                    pRunningFramesOut   = ma_offset_ptr(pRunningFramesOut, framesToReadThisIterationOut * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));

                    if (framesToReadThisIterationIn == 0 && framesToReadThisIterationOut == 0) {
                        break;  /* We're done. */
                    }
                }

                /* Getting here means there's no data in the cache and we need to fill it up with data from the client. */
                if (pDevice->playback.inputCacheRemaining == 0) {
                    ma_device__handle_data_callback(pDevice, pDevice->playback.pInputCache, NULL, (ma_uint32)pDevice->playback.inputCacheCap);

                    pDevice->playback.inputCacheConsumed  = 0;
                    pDevice->playback.inputCacheRemaining = pDevice->playback.inputCacheCap;
                }
            }
        } else {
            while (totalFramesReadOut < frameCount) {
                ma_uint8 pIntermediaryBuffer[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];  /* In client format. */
                ma_uint64 intermediaryBufferCap = sizeof(pIntermediaryBuffer) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels);
                ma_uint64 framesToReadThisIterationIn;
                ma_uint64 framesReadThisIterationIn;
                ma_uint64 framesToReadThisIterationOut;
                ma_uint64 framesReadThisIterationOut;
                ma_uint64 requiredInputFrameCount;

                framesToReadThisIterationOut = (frameCount - totalFramesReadOut);
                framesToReadThisIterationIn = framesToReadThisIterationOut;
                if (framesToReadThisIterationIn > intermediaryBufferCap) {
                    framesToReadThisIterationIn = intermediaryBufferCap;
                }

                ma_data_converter_get_required_input_frame_count(&pDevice->playback.converter, framesToReadThisIterationOut, &requiredInputFrameCount);
                if (framesToReadThisIterationIn > requiredInputFrameCount) {
                    framesToReadThisIterationIn = requiredInputFrameCount;
                }

                ma_device__handle_data_callback(pDevice, pIntermediaryBuffer, NULL, (ma_uint32)framesToReadThisIterationIn);

                /*
                At this point we have our decoded data in input format and now we need to convert to output format. Note that even if we didn't read any
                input frames, we still want to try processing frames because there may some output frames generated from cached input data.
                */
                framesReadThisIterationIn  = framesToReadThisIterationIn;
                framesReadThisIterationOut = framesToReadThisIterationOut;
                result = ma_data_converter_process_pcm_frames(&pDevice->playback.converter, pIntermediaryBuffer, &framesReadThisIterationIn, pRunningFramesOut, &framesReadThisIterationOut);
                if (result != MA_SUCCESS) {
                    break;
                }

                totalFramesReadOut += framesReadThisIterationOut;
                pRunningFramesOut   = ma_offset_ptr(pRunningFramesOut, framesReadThisIterationOut * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));

                if (framesReadThisIterationIn == 0 && framesReadThisIterationOut == 0) {
                    break;  /* We're done. */
                }
            }
        }
    }
}

/* A helper for sending sample data to the client. */
static void ma_device__send_frames_to_client(ma_device* pDevice, ma_uint32 frameCountInDeviceFormat, const void* pFramesInDeviceFormat)
{
    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(frameCountInDeviceFormat > 0);
    MA_ASSERT(pFramesInDeviceFormat != NULL);

    if (pDevice->capture.converter.isPassthrough) {
        ma_device__handle_data_callback(pDevice, NULL, pFramesInDeviceFormat, frameCountInDeviceFormat);
    } else {
        ma_result result;
        ma_uint8 pFramesInClientFormat[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
        ma_uint64 framesInClientFormatCap = sizeof(pFramesInClientFormat) / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels);
        ma_uint64 totalDeviceFramesProcessed = 0;
        ma_uint64 totalClientFramesProcessed = 0;
        const void* pRunningFramesInDeviceFormat = pFramesInDeviceFormat;

        /* We just keep going until we've exhausted all of our input frames and cannot generate any more output frames. */
        for (;;) {
            ma_uint64 deviceFramesProcessedThisIteration;
            ma_uint64 clientFramesProcessedThisIteration;

            deviceFramesProcessedThisIteration = (frameCountInDeviceFormat - totalDeviceFramesProcessed);
            clientFramesProcessedThisIteration = framesInClientFormatCap;

            result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningFramesInDeviceFormat, &deviceFramesProcessedThisIteration, pFramesInClientFormat, &clientFramesProcessedThisIteration);
            if (result != MA_SUCCESS) {
                break;
            }

            if (clientFramesProcessedThisIteration > 0) {
                ma_device__handle_data_callback(pDevice, NULL, pFramesInClientFormat, (ma_uint32)clientFramesProcessedThisIteration);    /* Safe cast. */
            }

            pRunningFramesInDeviceFormat = ma_offset_ptr(pRunningFramesInDeviceFormat, deviceFramesProcessedThisIteration * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels));
            totalDeviceFramesProcessed  += deviceFramesProcessedThisIteration;
            totalClientFramesProcessed  += clientFramesProcessedThisIteration;

            /* This is just to silence a warning. I might want to use this variable later so leaving in place for now. */
            (void)totalClientFramesProcessed;

            if (deviceFramesProcessedThisIteration == 0 && clientFramesProcessedThisIteration == 0) {
                break;  /* We're done. */
            }
        }
    }
}

static ma_result ma_device__handle_duplex_callback_capture(ma_device* pDevice, ma_uint32 frameCountInDeviceFormat, const void* pFramesInDeviceFormat, ma_pcm_rb* pRB)
{
    ma_result result;
    ma_uint32 totalDeviceFramesProcessed = 0;
    const void* pRunningFramesInDeviceFormat = pFramesInDeviceFormat;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(frameCountInDeviceFormat > 0);
    MA_ASSERT(pFramesInDeviceFormat != NULL);
    MA_ASSERT(pRB != NULL);

    /* Write to the ring buffer. The ring buffer is in the client format which means we need to convert. */
    for (;;) {
        ma_uint32 framesToProcessInDeviceFormat = (frameCountInDeviceFormat - totalDeviceFramesProcessed);
        ma_uint32 framesToProcessInClientFormat = MA_DATA_CONVERTER_STACK_BUFFER_SIZE / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels);
        ma_uint64 framesProcessedInDeviceFormat;
        ma_uint64 framesProcessedInClientFormat;
        void* pFramesInClientFormat;

        result = ma_pcm_rb_acquire_write(pRB, &framesToProcessInClientFormat, &pFramesInClientFormat);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "Failed to acquire capture PCM frames from ring buffer.");
            break;
        }

        if (framesToProcessInClientFormat == 0) {
            if (ma_pcm_rb_pointer_distance(pRB) == (ma_int32)ma_pcm_rb_get_subbuffer_size(pRB)) {
                break;  /* Overrun. Not enough room in the ring buffer for input frame. Excess frames are dropped. */
            }
        }

        /* Convert. */
        framesProcessedInDeviceFormat = framesToProcessInDeviceFormat;
        framesProcessedInClientFormat = framesToProcessInClientFormat;
        result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningFramesInDeviceFormat, &framesProcessedInDeviceFormat, pFramesInClientFormat, &framesProcessedInClientFormat);
        if (result != MA_SUCCESS) {
            break;
        }

        result = ma_pcm_rb_commit_write(pRB, (ma_uint32)framesProcessedInClientFormat);  /* Safe cast. */
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "Failed to commit capture PCM frames to ring buffer.");
            break;
        }

        pRunningFramesInDeviceFormat = ma_offset_ptr(pRunningFramesInDeviceFormat, framesProcessedInDeviceFormat * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels));
        totalDeviceFramesProcessed += (ma_uint32)framesProcessedInDeviceFormat; /* Safe cast. */

        /* We're done when we're unable to process any client nor device frames. */
        if (framesProcessedInClientFormat == 0 && framesProcessedInDeviceFormat == 0) {
            break;  /* Done. */
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device__handle_duplex_callback_playback(ma_device* pDevice, ma_uint32 frameCount, void* pFramesInInternalFormat, ma_pcm_rb* pRB)
{
    ma_result result;
    ma_uint8 silentInputFrames[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
    ma_uint32 totalFramesReadOut = 0;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(frameCount > 0);
    MA_ASSERT(pFramesInInternalFormat != NULL);
    MA_ASSERT(pRB != NULL);
    MA_ASSERT(pDevice->playback.pInputCache != NULL);

    /*
    Sitting in the ring buffer should be captured data from the capture callback in external format. If there's not enough data in there for
    the whole frameCount frames we just use silence instead for the input data.
    */
    MA_ZERO_MEMORY(silentInputFrames, sizeof(silentInputFrames));

    while (totalFramesReadOut < frameCount && ma_device_is_started(pDevice)) {
        /*
        We should have a buffer allocated on the heap. Any playback frames still sitting in there
        need to be sent to the internal device before we process any more data from the client.
        */
        if (pDevice->playback.inputCacheRemaining > 0) {
            ma_uint64 framesConvertedIn  = pDevice->playback.inputCacheRemaining;
            ma_uint64 framesConvertedOut = (frameCount - totalFramesReadOut);
            ma_data_converter_process_pcm_frames(&pDevice->playback.converter, ma_offset_pcm_frames_ptr(pDevice->playback.pInputCache, pDevice->playback.inputCacheConsumed, pDevice->playback.format, pDevice->playback.channels), &framesConvertedIn, pFramesInInternalFormat, &framesConvertedOut);

            pDevice->playback.inputCacheConsumed  += framesConvertedIn;
            pDevice->playback.inputCacheRemaining -= framesConvertedIn;

            totalFramesReadOut        += (ma_uint32)framesConvertedOut; /* Safe cast. */
            pFramesInInternalFormat    = ma_offset_ptr(pFramesInInternalFormat, framesConvertedOut * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));
        }

        /* If there's no more data in the cache we'll need to fill it with some. */
        if (totalFramesReadOut < frameCount && pDevice->playback.inputCacheRemaining == 0) {
            ma_uint32 inputFrameCount;
            void* pInputFrames;

            inputFrameCount = (ma_uint32)pDevice->playback.inputCacheCap;
            result = ma_pcm_rb_acquire_read(pRB, &inputFrameCount, &pInputFrames);
            if (result == MA_SUCCESS) {
                if (inputFrameCount > 0) {
                    ma_device__handle_data_callback(pDevice, pDevice->playback.pInputCache, pInputFrames, inputFrameCount);
                } else {
                    if (ma_pcm_rb_pointer_distance(pRB) == 0) {
                        break;  /* Underrun. */
                    }
                }
            } else {
                /* No capture data available. Feed in silence. */
                inputFrameCount = (ma_uint32)ma_min(pDevice->playback.inputCacheCap, sizeof(silentInputFrames) / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels));
                ma_device__handle_data_callback(pDevice, pDevice->playback.pInputCache, silentInputFrames, inputFrameCount);
            }

            pDevice->playback.inputCacheConsumed  = 0;
            pDevice->playback.inputCacheRemaining = inputFrameCount;

            result = ma_pcm_rb_commit_read(pRB, inputFrameCount);
            if (result != MA_SUCCESS) {
                return result;  /* Should never happen. */
            }
        }
    }

    return MA_SUCCESS;
}

/* A helper for changing the state of the device. */
static MA_INLINE void ma_device__set_state(ma_device* pDevice, ma_device_state newState)
{
    ma_atomic_device_state_set(&pDevice->state, newState);
}


#if defined(MA_WIN32)
    static GUID MA_GUID_KSDATAFORMAT_SUBTYPE_PCM        = {0x00000001, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
    static GUID MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT = {0x00000003, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};
    /*static GUID MA_GUID_KSDATAFORMAT_SUBTYPE_ALAW       = {0x00000006, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};*/
    /*static GUID MA_GUID_KSDATAFORMAT_SUBTYPE_MULAW      = {0x00000007, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}};*/
#endif



MA_API ma_uint32 ma_get_format_priority_index(ma_format format) /* Lower = better. */
{
    ma_uint32 i;
    for (i = 0; i < ma_countof(g_maFormatPriorities); ++i) {
        if (g_maFormatPriorities[i] == format) {
            return i;
        }
    }

    /* Getting here means the format could not be found or is equal to ma_format_unknown. */
    return (ma_uint32)-1;
}

static ma_result ma_device__post_init_setup(ma_device* pDevice, ma_device_type deviceType);

static ma_bool32 ma_device_descriptor_is_valid(const ma_device_descriptor* pDeviceDescriptor)
{
    if (pDeviceDescriptor == NULL) {
        return MA_FALSE;
    }

    if (pDeviceDescriptor->format == ma_format_unknown) {
        return MA_FALSE;
    }

    if (pDeviceDescriptor->channels == 0 || pDeviceDescriptor->channels > MA_MAX_CHANNELS) {
        return MA_FALSE;
    }

    if (pDeviceDescriptor->sampleRate == 0) {
        return MA_FALSE;
    }

    return MA_TRUE;
}


static ma_result ma_device_audio_thread__default_read_write(ma_device* pDevice)
{
    ma_result result = MA_SUCCESS;
    ma_bool32 exitLoop = MA_FALSE;
    ma_uint8  capturedDeviceData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
    ma_uint8  playbackDeviceData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
    ma_uint32 capturedDeviceDataCapInFrames = 0;
    ma_uint32 playbackDeviceDataCapInFrames = 0;

    MA_ASSERT(pDevice != NULL);

    /* Just some quick validation on the device type and the available callbacks. */
    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex || pDevice->type == ma_device_type_loopback) {
        if (pDevice->pContext->callbacks.onDeviceRead == NULL) {
            return MA_NOT_IMPLEMENTED;
        }

        capturedDeviceDataCapInFrames = sizeof(capturedDeviceData) / ma_get_bytes_per_frame(pDevice->capture.internalFormat,  pDevice->capture.internalChannels);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        if (pDevice->pContext->callbacks.onDeviceWrite == NULL) {
            return MA_NOT_IMPLEMENTED;
        }

        playbackDeviceDataCapInFrames = sizeof(playbackDeviceData) / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    }

    /* NOTE: The device was started outside of this function, in the worker thread. */

    while (ma_device_get_state(pDevice) == ma_device_state_started && !exitLoop) {
        switch (pDevice->type) {
            case ma_device_type_duplex:
            {
                /* The process is: onDeviceRead() -> convert -> callback -> convert -> onDeviceWrite() */
                ma_uint32 totalCapturedDeviceFramesProcessed = 0;
                ma_uint32 capturedDevicePeriodSizeInFrames = ma_min(pDevice->capture.internalPeriodSizeInFrames, pDevice->playback.internalPeriodSizeInFrames);

                while (totalCapturedDeviceFramesProcessed < capturedDevicePeriodSizeInFrames) {
                    ma_uint32 capturedDeviceFramesRemaining;
                    ma_uint32 capturedDeviceFramesProcessed;
                    ma_uint32 capturedDeviceFramesToProcess;
                    ma_uint32 capturedDeviceFramesToTryProcessing = capturedDevicePeriodSizeInFrames - totalCapturedDeviceFramesProcessed;
                    if (capturedDeviceFramesToTryProcessing > capturedDeviceDataCapInFrames) {
                        capturedDeviceFramesToTryProcessing = capturedDeviceDataCapInFrames;
                    }

                    result = pDevice->pContext->callbacks.onDeviceRead(pDevice, capturedDeviceData, capturedDeviceFramesToTryProcessing, &capturedDeviceFramesToProcess);
                    if (result != MA_SUCCESS) {
                        exitLoop = MA_TRUE;
                        break;
                    }

                    capturedDeviceFramesRemaining = capturedDeviceFramesToProcess;
                    capturedDeviceFramesProcessed = 0;

                    /* At this point we have our captured data in device format and we now need to convert it to client format. */
                    for (;;) {
                        ma_uint8  capturedClientData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
                        ma_uint8  playbackClientData[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
                        ma_uint32 capturedClientDataCapInFrames = sizeof(capturedClientData) / ma_get_bytes_per_frame(pDevice->capture.format,  pDevice->capture.channels);
                        ma_uint32 playbackClientDataCapInFrames = sizeof(playbackClientData) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels);
                        ma_uint64 capturedClientFramesToProcessThisIteration = ma_min(capturedClientDataCapInFrames, playbackClientDataCapInFrames);
                        ma_uint64 capturedDeviceFramesToProcessThisIteration = capturedDeviceFramesRemaining;
                        ma_uint8* pRunningCapturedDeviceFrames = ma_offset_ptr(capturedDeviceData, capturedDeviceFramesProcessed * ma_get_bytes_per_frame(pDevice->capture.internalFormat,  pDevice->capture.internalChannels));

                        /* Convert capture data from device format to client format. */
                        result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningCapturedDeviceFrames, &capturedDeviceFramesToProcessThisIteration, capturedClientData, &capturedClientFramesToProcessThisIteration);
                        if (result != MA_SUCCESS) {
                            break;
                        }

                        /*
                        If we weren't able to generate any output frames it must mean we've exhausted all of our input. The only time this would not be the case is if capturedClientData was too small
                        which should never be the case when it's of the size MA_DATA_CONVERTER_STACK_BUFFER_SIZE.
                        */
                        if (capturedClientFramesToProcessThisIteration == 0) {
                            break;
                        }

                        ma_device__handle_data_callback(pDevice, playbackClientData, capturedClientData, (ma_uint32)capturedClientFramesToProcessThisIteration);    /* Safe cast .*/

                        capturedDeviceFramesProcessed += (ma_uint32)capturedDeviceFramesToProcessThisIteration; /* Safe cast. */
                        capturedDeviceFramesRemaining -= (ma_uint32)capturedDeviceFramesToProcessThisIteration; /* Safe cast. */

                        /* At this point the playbackClientData buffer should be holding data that needs to be written to the device. */
                        for (;;) {
                            ma_uint64 convertedClientFrameCount = capturedClientFramesToProcessThisIteration;
                            ma_uint64 convertedDeviceFrameCount = playbackDeviceDataCapInFrames;
                            result = ma_data_converter_process_pcm_frames(&pDevice->playback.converter, playbackClientData, &convertedClientFrameCount, playbackDeviceData, &convertedDeviceFrameCount);
                            if (result != MA_SUCCESS) {
                                break;
                            }

                            result = pDevice->pContext->callbacks.onDeviceWrite(pDevice, playbackDeviceData, (ma_uint32)convertedDeviceFrameCount, NULL);   /* Safe cast. */
                            if (result != MA_SUCCESS) {
                                exitLoop = MA_TRUE;
                                break;
                            }

                            capturedClientFramesToProcessThisIteration -= (ma_uint32)convertedClientFrameCount;  /* Safe cast. */
                            if (capturedClientFramesToProcessThisIteration == 0) {
                                break;
                            }
                        }

                        /* In case an error happened from ma_device_write__null()... */
                        if (result != MA_SUCCESS) {
                            exitLoop = MA_TRUE;
                            break;
                        }
                    }

                    /* Make sure we don't get stuck in the inner loop. */
                    if (capturedDeviceFramesProcessed == 0) {
                        break;
                    }

                    totalCapturedDeviceFramesProcessed += capturedDeviceFramesProcessed;
                }
            } break;

            case ma_device_type_capture:
            case ma_device_type_loopback:
            {
                ma_uint32 periodSizeInFrames = pDevice->capture.internalPeriodSizeInFrames;
                ma_uint32 framesReadThisPeriod = 0;
                while (framesReadThisPeriod < periodSizeInFrames) {
                    ma_uint32 framesRemainingInPeriod = periodSizeInFrames - framesReadThisPeriod;
                    ma_uint32 framesProcessed;
                    ma_uint32 framesToReadThisIteration = framesRemainingInPeriod;
                    if (framesToReadThisIteration > capturedDeviceDataCapInFrames) {
                        framesToReadThisIteration = capturedDeviceDataCapInFrames;
                    }

                    result = pDevice->pContext->callbacks.onDeviceRead(pDevice, capturedDeviceData, framesToReadThisIteration, &framesProcessed);
                    if (result != MA_SUCCESS) {
                        exitLoop = MA_TRUE;
                        break;
                    }

                    /* Make sure we don't get stuck in the inner loop. */
                    if (framesProcessed == 0) {
                        break;
                    }

                    ma_device__send_frames_to_client(pDevice, framesProcessed, capturedDeviceData);

                    framesReadThisPeriod += framesProcessed;
                }
            } break;

            case ma_device_type_playback:
            {
                /* We write in chunks of the period size, but use a stack allocated buffer for the intermediary. */
                ma_uint32 periodSizeInFrames = pDevice->playback.internalPeriodSizeInFrames;
                ma_uint32 framesWrittenThisPeriod = 0;
                while (framesWrittenThisPeriod < periodSizeInFrames) {
                    ma_uint32 framesRemainingInPeriod = periodSizeInFrames - framesWrittenThisPeriod;
                    ma_uint32 framesProcessed;
                    ma_uint32 framesToWriteThisIteration = framesRemainingInPeriod;
                    if (framesToWriteThisIteration > playbackDeviceDataCapInFrames) {
                        framesToWriteThisIteration = playbackDeviceDataCapInFrames;
                    }

                    ma_device__read_frames_from_client(pDevice, framesToWriteThisIteration, playbackDeviceData);

                    result = pDevice->pContext->callbacks.onDeviceWrite(pDevice, playbackDeviceData, framesToWriteThisIteration, &framesProcessed);
                    if (result != MA_SUCCESS) {
                        exitLoop = MA_TRUE;
                        break;
                    }

                    /* Make sure we don't get stuck in the inner loop. */
                    if (framesProcessed == 0) {
                        break;
                    }

                    framesWrittenThisPeriod += framesProcessed;
                }
            } break;

            /* Should never get here. */
            default: break;
        }
    }

    return result;
}



/*******************************************************************************

Null Backend

*******************************************************************************/
#ifdef MA_HAS_NULL

#define MA_DEVICE_OP_NONE__NULL    0
#define MA_DEVICE_OP_START__NULL   1
#define MA_DEVICE_OP_SUSPEND__NULL 2
#define MA_DEVICE_OP_KILL__NULL    3

static ma_thread_result MA_THREADCALL ma_device_thread__null(void* pData)
{
    ma_device* pDevice = (ma_device*)pData;
    MA_ASSERT(pDevice != NULL);

    for (;;) {  /* Keep the thread alive until the device is uninitialized. */
        ma_uint32 operation;

        /* Wait for an operation to be requested. */
        ma_event_wait(&pDevice->null_device.operationEvent);

        /* At this point an event should have been triggered. */
        operation = pDevice->null_device.operation;

        /* Starting the device needs to put the thread into a loop. */
        if (operation == MA_DEVICE_OP_START__NULL) {
            /* Reset the timer just in case. */
            ma_timer_init(&pDevice->null_device.timer);

            /* Getting here means a suspend or kill operation has been requested. */
            pDevice->null_device.operationResult = MA_SUCCESS;
            ma_event_signal(&pDevice->null_device.operationCompletionEvent);
            ma_semaphore_release(&pDevice->null_device.operationSemaphore);
            continue;
        }

        /* Suspending the device means we need to stop the timer and just continue the loop. */
        if (operation == MA_DEVICE_OP_SUSPEND__NULL) {
            /* We need to add the current run time to the prior run time, then reset the timer. */
            pDevice->null_device.priorRunTime += ma_timer_get_time_in_seconds(&pDevice->null_device.timer);
            ma_timer_init(&pDevice->null_device.timer);

            /* We're done. */
            pDevice->null_device.operationResult = MA_SUCCESS;
            ma_event_signal(&pDevice->null_device.operationCompletionEvent);
            ma_semaphore_release(&pDevice->null_device.operationSemaphore);
            continue;
        }

        /* Killing the device means we need to get out of this loop so that this thread can terminate. */
        if (operation == MA_DEVICE_OP_KILL__NULL) {
            pDevice->null_device.operationResult = MA_SUCCESS;
            ma_event_signal(&pDevice->null_device.operationCompletionEvent);
            ma_semaphore_release(&pDevice->null_device.operationSemaphore);
            break;
        }

        /* Getting a signal on a "none" operation probably means an error. Return invalid operation. */
        if (operation == MA_DEVICE_OP_NONE__NULL) {
            MA_ASSERT(MA_FALSE);  /* <-- Trigger this in debug mode to ensure developers are aware they're doing something wrong (or there's a bug in a miniaudio). */
            pDevice->null_device.operationResult = MA_INVALID_OPERATION;
            ma_event_signal(&pDevice->null_device.operationCompletionEvent);
            ma_semaphore_release(&pDevice->null_device.operationSemaphore);
            continue;   /* Continue the loop. Don't terminate. */
        }
    }

    return (ma_thread_result)0;
}

static ma_result ma_device_do_operation__null(ma_device* pDevice, ma_uint32 operation)
{
    ma_result result;

    /*
    TODO: Need to review this and consider just using mutual exclusion. I think the original motivation
    for this was to just post the event to a queue and return immediately, but that has since changed
    and now this function is synchronous. I think this can be simplified to just use a mutex.
    */

    /*
    The first thing to do is wait for an operation slot to become available. We only have a single slot for this, but we could extend this later
    to support queuing of operations.
    */
    result = ma_semaphore_wait(&pDevice->null_device.operationSemaphore);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to wait for the event. */
    }

    /*
    When we get here it means the background thread is not referencing the operation code and it can be changed. After changing this we need to
    signal an event to the worker thread to let it know that it can start work.
    */
    pDevice->null_device.operation = operation;

    /* Once the operation code has been set, the worker thread can start work. */
    if (ma_event_signal(&pDevice->null_device.operationEvent) != MA_SUCCESS) {
        return MA_ERROR;
    }

    /* We want everything to be synchronous so we're going to wait for the worker thread to complete it's operation. */
    if (ma_event_wait(&pDevice->null_device.operationCompletionEvent) != MA_SUCCESS) {
        return MA_ERROR;
    }

    return pDevice->null_device.operationResult;
}

static ma_uint64 ma_device_get_total_run_time_in_frames__null(ma_device* pDevice)
{
    ma_uint32 internalSampleRate;
    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        internalSampleRate = pDevice->capture.internalSampleRate;
    } else {
        internalSampleRate = pDevice->playback.internalSampleRate;
    }

    return (ma_uint64)((pDevice->null_device.priorRunTime + ma_timer_get_time_in_seconds(&pDevice->null_device.timer)) * internalSampleRate);
}

static ma_result ma_context_enumerate_devices__null(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_bool32 cbResult = MA_TRUE;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* Playback. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Playback Device", (size_t)-1);
        deviceInfo.isDefault = MA_TRUE; /* Only one playback and capture device for the null backend, so might as well mark as default. */
        cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
    }

    /* Capture. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), "NULL Capture Device", (size_t)-1);
        deviceInfo.isDefault = MA_TRUE; /* Only one playback and capture device for the null backend, so might as well mark as default. */
        cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
    }

    (void)cbResult; /* Silence a static analysis warning. */

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__null(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    MA_ASSERT(pContext != NULL);

    if (pDeviceID != NULL && pDeviceID->nullbackend != 0) {
        return MA_NO_DEVICE;   /* Don't know the device. */
    }

    /* Name / Description */
    if (deviceType == ma_device_type_playback) {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), "NULL Playback Device", (size_t)-1);
    } else {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), "NULL Capture Device", (size_t)-1);
    }

    pDeviceInfo->isDefault = MA_TRUE;   /* Only one playback and capture device for the null backend, so might as well mark as default. */

    /* Support everything on the null backend. */
    pDeviceInfo->nativeDataFormats[0].format     = ma_format_unknown;
    pDeviceInfo->nativeDataFormats[0].channels   = 0;
    pDeviceInfo->nativeDataFormats[0].sampleRate = 0;
    pDeviceInfo->nativeDataFormats[0].flags      = 0;
    pDeviceInfo->nativeDataFormatCount = 1;

    (void)pContext;
    return MA_SUCCESS;
}


static ma_result ma_device_uninit__null(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /* Keep it clean and wait for the device thread to finish before returning. */
    ma_device_do_operation__null(pDevice, MA_DEVICE_OP_KILL__NULL);

    /* Wait for the thread to finish before continuing. */
    ma_thread_wait(&pDevice->null_device.deviceThread);

    /* At this point the loop in the device thread is as good as terminated so we can uninitialize our events. */
    ma_semaphore_uninit(&pDevice->null_device.operationSemaphore);
    ma_event_uninit(&pDevice->null_device.operationCompletionEvent);
    ma_event_uninit(&pDevice->null_device.operationEvent);

    return MA_SUCCESS;
}

static ma_result ma_device_init__null(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->null_device);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /* The null backend supports everything exactly as we specify it. */
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        pDescriptorCapture->format     = (pDescriptorCapture->format     != ma_format_unknown) ? pDescriptorCapture->format     : MA_DEFAULT_FORMAT;
        pDescriptorCapture->channels   = (pDescriptorCapture->channels   != 0)                 ? pDescriptorCapture->channels   : MA_DEFAULT_CHANNELS;
        pDescriptorCapture->sampleRate = (pDescriptorCapture->sampleRate != 0)                 ? pDescriptorCapture->sampleRate : MA_DEFAULT_SAMPLE_RATE;

        if (pDescriptorCapture->channelMap[0] == MA_CHANNEL_NONE) {
            ma_channel_map_init_standard(ma_standard_channel_map_default, pDescriptorCapture->channelMap, ma_countof(pDescriptorCapture->channelMap), pDescriptorCapture->channels);
        }

        pDescriptorCapture->periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptorCapture, pDescriptorCapture->sampleRate, pConfig->performanceProfile);
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        pDescriptorPlayback->format     = (pDescriptorPlayback->format     != ma_format_unknown) ? pDescriptorPlayback->format     : MA_DEFAULT_FORMAT;
        pDescriptorPlayback->channels   = (pDescriptorPlayback->channels   != 0)                 ? pDescriptorPlayback->channels   : MA_DEFAULT_CHANNELS;
        pDescriptorPlayback->sampleRate = (pDescriptorPlayback->sampleRate != 0)                 ? pDescriptorPlayback->sampleRate : MA_DEFAULT_SAMPLE_RATE;

        if (pDescriptorPlayback->channelMap[0] == MA_CHANNEL_NONE) {
            ma_channel_map_init_standard(ma_standard_channel_map_default, pDescriptorPlayback->channelMap, ma_countof(pDescriptorCapture->channelMap), pDescriptorPlayback->channels);
        }

        pDescriptorPlayback->periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptorPlayback, pDescriptorPlayback->sampleRate, pConfig->performanceProfile);
    }

    /*
    In order to get timing right, we need to create a thread that does nothing but keeps track of the timer. This timer is started when the
    first period is "written" to it, and then stopped in ma_device_stop__null().
    */
    result = ma_event_init(&pDevice->null_device.operationEvent);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_event_init(&pDevice->null_device.operationCompletionEvent);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_semaphore_init(1, &pDevice->null_device.operationSemaphore);    /* <-- It's important that the initial value is set to 1. */
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_thread_create(&pDevice->null_device.deviceThread, pDevice->pContext->threadPriority, 0, ma_device_thread__null, pDevice, &pDevice->pContext->allocationCallbacks);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__null(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    ma_device_do_operation__null(pDevice, MA_DEVICE_OP_START__NULL);

    ma_atomic_bool32_set(&pDevice->null_device.isStarted, MA_TRUE);
    return MA_SUCCESS;
}

static ma_result ma_device_stop__null(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    ma_device_do_operation__null(pDevice, MA_DEVICE_OP_SUSPEND__NULL);

    ma_atomic_bool32_set(&pDevice->null_device.isStarted, MA_FALSE);
    return MA_SUCCESS;
}

static ma_bool32 ma_device_is_started__null(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    return ma_atomic_bool32_get(&pDevice->null_device.isStarted);
}

static ma_result ma_device_write__null(ma_device* pDevice, const void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 totalPCMFramesProcessed;
    ma_bool32 wasStartedOnEntry;

    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    wasStartedOnEntry = ma_device_is_started__null(pDevice);

    /* Keep going until everything has been read. */
    totalPCMFramesProcessed = 0;
    while (totalPCMFramesProcessed < frameCount) {
        ma_uint64 targetFrame;

        /* If there are any frames remaining in the current period, consume those first. */
        if (pDevice->null_device.currentPeriodFramesRemainingPlayback > 0) {
            ma_uint32 framesRemaining = (frameCount - totalPCMFramesProcessed);
            ma_uint32 framesToProcess = pDevice->null_device.currentPeriodFramesRemainingPlayback;
            if (framesToProcess > framesRemaining) {
                framesToProcess = framesRemaining;
            }

            /* We don't actually do anything with pPCMFrames, so just mark it as unused to prevent a warning. */
            (void)pPCMFrames;

            pDevice->null_device.currentPeriodFramesRemainingPlayback -= framesToProcess;
            totalPCMFramesProcessed += framesToProcess;
        }

        /* If we've consumed the current period we'll need to mark it as such an ensure the device is started if it's not already. */
        if (pDevice->null_device.currentPeriodFramesRemainingPlayback == 0) {
            pDevice->null_device.currentPeriodFramesRemainingPlayback = 0;

            if (!ma_device_is_started__null(pDevice) && !wasStartedOnEntry) {
                result = ma_device_start__null(pDevice);
                if (result != MA_SUCCESS) {
                    break;
                }
            }
        }

        /* If we've consumed the whole buffer we can return now. */
        MA_ASSERT(totalPCMFramesProcessed <= frameCount);
        if (totalPCMFramesProcessed == frameCount) {
            break;
        }

        /* Getting here means we've still got more frames to consume, we but need to wait for it to become available. */
        targetFrame = pDevice->null_device.lastProcessedFramePlayback;
        for (;;) {
            ma_uint64 currentFrame;

            /* Stop waiting if the device has been stopped. */
            if (!ma_device_is_started__null(pDevice)) {
                break;
            }

            currentFrame = ma_device_get_total_run_time_in_frames__null(pDevice);
            if (currentFrame >= targetFrame) {
                break;
            }

            /* Getting here means we haven't yet reached the target sample, so continue waiting. */
            ma_sleep(10);
        }

        pDevice->null_device.lastProcessedFramePlayback          += pDevice->playback.internalPeriodSizeInFrames;
        pDevice->null_device.currentPeriodFramesRemainingPlayback = pDevice->playback.internalPeriodSizeInFrames;
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = totalPCMFramesProcessed;
    }

    return result;
}

static ma_result ma_device_read__null(ma_device* pDevice, void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 totalPCMFramesProcessed;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    /* Keep going until everything has been read. */
    totalPCMFramesProcessed = 0;
    while (totalPCMFramesProcessed < frameCount) {
        ma_uint64 targetFrame;

        /* If there are any frames remaining in the current period, consume those first. */
        if (pDevice->null_device.currentPeriodFramesRemainingCapture > 0) {
            ma_uint32 bpf = ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
            ma_uint32 framesRemaining = (frameCount - totalPCMFramesProcessed);
            ma_uint32 framesToProcess = pDevice->null_device.currentPeriodFramesRemainingCapture;
            if (framesToProcess > framesRemaining) {
                framesToProcess = framesRemaining;
            }

            /* We need to ensure the output buffer is zeroed. */
            MA_ZERO_MEMORY(ma_offset_ptr(pPCMFrames, totalPCMFramesProcessed*bpf), framesToProcess*bpf);

            pDevice->null_device.currentPeriodFramesRemainingCapture -= framesToProcess;
            totalPCMFramesProcessed += framesToProcess;
        }

        /* If we've consumed the current period we'll need to mark it as such an ensure the device is started if it's not already. */
        if (pDevice->null_device.currentPeriodFramesRemainingCapture == 0) {
            pDevice->null_device.currentPeriodFramesRemainingCapture = 0;
        }

        /* If we've consumed the whole buffer we can return now. */
        MA_ASSERT(totalPCMFramesProcessed <= frameCount);
        if (totalPCMFramesProcessed == frameCount) {
            break;
        }

        /* Getting here means we've still got more frames to consume, we but need to wait for it to become available. */
        targetFrame = pDevice->null_device.lastProcessedFrameCapture + pDevice->capture.internalPeriodSizeInFrames;
        for (;;) {
            ma_uint64 currentFrame;

            /* Stop waiting if the device has been stopped. */
            if (!ma_device_is_started__null(pDevice)) {
                break;
            }

            currentFrame = ma_device_get_total_run_time_in_frames__null(pDevice);
            if (currentFrame >= targetFrame) {
                break;
            }

            /* Getting here means we haven't yet reached the target sample, so continue waiting. */
            ma_sleep(10);
        }

        pDevice->null_device.lastProcessedFrameCapture          += pDevice->capture.internalPeriodSizeInFrames;
        pDevice->null_device.currentPeriodFramesRemainingCapture = pDevice->capture.internalPeriodSizeInFrames;
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalPCMFramesProcessed;
    }

    return result;
}

static ma_result ma_context_uninit__null(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_null);

    (void)pContext;
    return MA_SUCCESS;
}

static ma_result ma_context_init__null(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    MA_ASSERT(pContext != NULL);

    (void)pConfig;
    (void)pContext;

    pCallbacks->onContextInit             = ma_context_init__null;
    pCallbacks->onContextUninit           = ma_context_uninit__null;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__null;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__null;
    pCallbacks->onDeviceInit              = ma_device_init__null;
    pCallbacks->onDeviceUninit            = ma_device_uninit__null;
    pCallbacks->onDeviceStart             = ma_device_start__null;
    pCallbacks->onDeviceStop              = ma_device_stop__null;
    pCallbacks->onDeviceRead              = ma_device_read__null;
    pCallbacks->onDeviceWrite             = ma_device_write__null;
    pCallbacks->onDeviceDataLoop          = NULL;   /* Our backend is asynchronous with a blocking read-write API which means we can get miniaudio to deal with the audio thread. */

    /* The null backend always works. */
    return MA_SUCCESS;
}
#endif



/*******************************************************************************

WIN32 COMMON

*******************************************************************************/
#if defined(MA_WIN32)
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    #define ma_CoInitializeEx(pContext, pvReserved, dwCoInit)                          ((pContext->win32.CoInitializeEx) ? ((MA_PFN_CoInitializeEx)pContext->win32.CoInitializeEx)(pvReserved, dwCoInit) : ((MA_PFN_CoInitialize)pContext->win32.CoInitialize)(pvReserved))
    #define ma_CoUninitialize(pContext)                                                ((MA_PFN_CoUninitialize)pContext->win32.CoUninitialize)()
    #define ma_CoCreateInstance(pContext, rclsid, pUnkOuter, dwClsContext, riid, ppv)  ((MA_PFN_CoCreateInstance)pContext->win32.CoCreateInstance)(rclsid, pUnkOuter, dwClsContext, riid, ppv)
    #define ma_CoTaskMemFree(pContext, pv)                                             ((MA_PFN_CoTaskMemFree)pContext->win32.CoTaskMemFree)(pv)
    #define ma_PropVariantClear(pContext, pvar)                                        ((MA_PFN_PropVariantClear)pContext->win32.PropVariantClear)(pvar)
#else
    #define ma_CoInitializeEx(pContext, pvReserved, dwCoInit)                          CoInitializeEx(pvReserved, dwCoInit)
    #define ma_CoUninitialize(pContext)                                                CoUninitialize()
    #define ma_CoCreateInstance(pContext, rclsid, pUnkOuter, dwClsContext, riid, ppv)  CoCreateInstance(rclsid, pUnkOuter, dwClsContext, riid, ppv)
    #define ma_CoTaskMemFree(pContext, pv)                                             CoTaskMemFree(pv)
    #define ma_PropVariantClear(pContext, pvar)                                        PropVariantClear(pvar)
#endif

#if !defined(MAXULONG_PTR) && !defined(__WATCOMC__)
typedef size_t DWORD_PTR;
#endif

#if !defined(WAVE_FORMAT_1M08)
#define WAVE_FORMAT_1M08    0x00000001
#define WAVE_FORMAT_1S08    0x00000002
#define WAVE_FORMAT_1M16    0x00000004
#define WAVE_FORMAT_1S16    0x00000008
#define WAVE_FORMAT_2M08    0x00000010
#define WAVE_FORMAT_2S08    0x00000020
#define WAVE_FORMAT_2M16    0x00000040
#define WAVE_FORMAT_2S16    0x00000080
#define WAVE_FORMAT_4M08    0x00000100
#define WAVE_FORMAT_4S08    0x00000200
#define WAVE_FORMAT_4M16    0x00000400
#define WAVE_FORMAT_4S16    0x00000800
#endif

#if !defined(WAVE_FORMAT_44M08)
#define WAVE_FORMAT_44M08   0x00000100
#define WAVE_FORMAT_44S08   0x00000200
#define WAVE_FORMAT_44M16   0x00000400
#define WAVE_FORMAT_44S16   0x00000800
#define WAVE_FORMAT_48M08   0x00001000
#define WAVE_FORMAT_48S08   0x00002000
#define WAVE_FORMAT_48M16   0x00004000
#define WAVE_FORMAT_48S16   0x00008000
#define WAVE_FORMAT_96M08   0x00010000
#define WAVE_FORMAT_96S08   0x00020000
#define WAVE_FORMAT_96M16   0x00040000
#define WAVE_FORMAT_96S16   0x00080000
#endif

#ifndef SPEAKER_FRONT_LEFT
#define SPEAKER_FRONT_LEFT            0x1
#define SPEAKER_FRONT_RIGHT           0x2
#define SPEAKER_FRONT_CENTER          0x4
#define SPEAKER_LOW_FREQUENCY         0x8
#define SPEAKER_BACK_LEFT             0x10
#define SPEAKER_BACK_RIGHT            0x20
#define SPEAKER_FRONT_LEFT_OF_CENTER  0x40
#define SPEAKER_FRONT_RIGHT_OF_CENTER 0x80
#define SPEAKER_BACK_CENTER           0x100
#define SPEAKER_SIDE_LEFT             0x200
#define SPEAKER_SIDE_RIGHT            0x400
#define SPEAKER_TOP_CENTER            0x800
#define SPEAKER_TOP_FRONT_LEFT        0x1000
#define SPEAKER_TOP_FRONT_CENTER      0x2000
#define SPEAKER_TOP_FRONT_RIGHT       0x4000
#define SPEAKER_TOP_BACK_LEFT         0x8000
#define SPEAKER_TOP_BACK_CENTER       0x10000
#define SPEAKER_TOP_BACK_RIGHT        0x20000
#endif

/*
Implement our own version of MA_WAVEFORMATEXTENSIBLE so we can avoid a header. Be careful with this
because MA_WAVEFORMATEX has an extra two bytes over standard WAVEFORMATEX due to padding. The
standard version uses tight packing, but for compiler compatibility we're not doing that with ours.
*/
typedef struct
{
    WORD wFormatTag;
    WORD nChannels;
    DWORD nSamplesPerSec;
    DWORD nAvgBytesPerSec;
    WORD nBlockAlign;
    WORD wBitsPerSample;
    WORD cbSize;
} MA_WAVEFORMATEX;

typedef struct
{
    WORD wFormatTag;
    WORD nChannels;
    DWORD nSamplesPerSec;
    DWORD nAvgBytesPerSec;
    WORD nBlockAlign;
    WORD wBitsPerSample;
    WORD cbSize;
    union
    {
        WORD wValidBitsPerSample;
        WORD wSamplesPerBlock;
        WORD wReserved;
    } Samples;
    DWORD dwChannelMask;
    GUID SubFormat;
} MA_WAVEFORMATEXTENSIBLE;



#ifndef WAVE_FORMAT_EXTENSIBLE
#define WAVE_FORMAT_EXTENSIBLE  0xFFFE
#endif

#ifndef WAVE_FORMAT_PCM
#define WAVE_FORMAT_PCM         1
#endif

#ifndef WAVE_FORMAT_IEEE_FLOAT
#define WAVE_FORMAT_IEEE_FLOAT  0x0003
#endif

/* Converts an individual Win32-style channel identifier (SPEAKER_FRONT_LEFT, etc.) to miniaudio. */
static ma_uint8 ma_channel_id_to_ma__win32(DWORD id)
{
    switch (id)
    {
        case SPEAKER_FRONT_LEFT:            return MA_CHANNEL_FRONT_LEFT;
        case SPEAKER_FRONT_RIGHT:           return MA_CHANNEL_FRONT_RIGHT;
        case SPEAKER_FRONT_CENTER:          return MA_CHANNEL_FRONT_CENTER;
        case SPEAKER_LOW_FREQUENCY:         return MA_CHANNEL_LFE;
        case SPEAKER_BACK_LEFT:             return MA_CHANNEL_BACK_LEFT;
        case SPEAKER_BACK_RIGHT:            return MA_CHANNEL_BACK_RIGHT;
        case SPEAKER_FRONT_LEFT_OF_CENTER:  return MA_CHANNEL_FRONT_LEFT_CENTER;
        case SPEAKER_FRONT_RIGHT_OF_CENTER: return MA_CHANNEL_FRONT_RIGHT_CENTER;
        case SPEAKER_BACK_CENTER:           return MA_CHANNEL_BACK_CENTER;
        case SPEAKER_SIDE_LEFT:             return MA_CHANNEL_SIDE_LEFT;
        case SPEAKER_SIDE_RIGHT:            return MA_CHANNEL_SIDE_RIGHT;
        case SPEAKER_TOP_CENTER:            return MA_CHANNEL_TOP_CENTER;
        case SPEAKER_TOP_FRONT_LEFT:        return MA_CHANNEL_TOP_FRONT_LEFT;
        case SPEAKER_TOP_FRONT_CENTER:      return MA_CHANNEL_TOP_FRONT_CENTER;
        case SPEAKER_TOP_FRONT_RIGHT:       return MA_CHANNEL_TOP_FRONT_RIGHT;
        case SPEAKER_TOP_BACK_LEFT:         return MA_CHANNEL_TOP_BACK_LEFT;
        case SPEAKER_TOP_BACK_CENTER:       return MA_CHANNEL_TOP_BACK_CENTER;
        case SPEAKER_TOP_BACK_RIGHT:        return MA_CHANNEL_TOP_BACK_RIGHT;
        default: return 0;
    }
}

/* Converts an individual miniaudio channel identifier (MA_CHANNEL_FRONT_LEFT, etc.) to Win32-style. */
static DWORD ma_channel_id_to_win32(DWORD id)
{
    switch (id)
    {
        case MA_CHANNEL_MONO:               return SPEAKER_FRONT_CENTER;
        case MA_CHANNEL_FRONT_LEFT:         return SPEAKER_FRONT_LEFT;
        case MA_CHANNEL_FRONT_RIGHT:        return SPEAKER_FRONT_RIGHT;
        case MA_CHANNEL_FRONT_CENTER:       return SPEAKER_FRONT_CENTER;
        case MA_CHANNEL_LFE:                return SPEAKER_LOW_FREQUENCY;
        case MA_CHANNEL_BACK_LEFT:          return SPEAKER_BACK_LEFT;
        case MA_CHANNEL_BACK_RIGHT:         return SPEAKER_BACK_RIGHT;
        case MA_CHANNEL_FRONT_LEFT_CENTER:  return SPEAKER_FRONT_LEFT_OF_CENTER;
        case MA_CHANNEL_FRONT_RIGHT_CENTER: return SPEAKER_FRONT_RIGHT_OF_CENTER;
        case MA_CHANNEL_BACK_CENTER:        return SPEAKER_BACK_CENTER;
        case MA_CHANNEL_SIDE_LEFT:          return SPEAKER_SIDE_LEFT;
        case MA_CHANNEL_SIDE_RIGHT:         return SPEAKER_SIDE_RIGHT;
        case MA_CHANNEL_TOP_CENTER:         return SPEAKER_TOP_CENTER;
        case MA_CHANNEL_TOP_FRONT_LEFT:     return SPEAKER_TOP_FRONT_LEFT;
        case MA_CHANNEL_TOP_FRONT_CENTER:   return SPEAKER_TOP_FRONT_CENTER;
        case MA_CHANNEL_TOP_FRONT_RIGHT:    return SPEAKER_TOP_FRONT_RIGHT;
        case MA_CHANNEL_TOP_BACK_LEFT:      return SPEAKER_TOP_BACK_LEFT;
        case MA_CHANNEL_TOP_BACK_CENTER:    return SPEAKER_TOP_BACK_CENTER;
        case MA_CHANNEL_TOP_BACK_RIGHT:     return SPEAKER_TOP_BACK_RIGHT;
        default: return 0;
    }
}

/* Converts a channel mapping to a Win32-style channel mask. */
static DWORD ma_channel_map_to_channel_mask__win32(const ma_channel* pChannelMap, ma_uint32 channels)
{
    DWORD dwChannelMask = 0;
    ma_uint32 iChannel;

    for (iChannel = 0; iChannel < channels; ++iChannel) {
        dwChannelMask |= ma_channel_id_to_win32(pChannelMap[iChannel]);
    }

    return dwChannelMask;
}

/* Converts a Win32-style channel mask to a miniaudio channel map. */
static void ma_channel_mask_to_channel_map__win32(DWORD dwChannelMask, ma_uint32 channels, ma_channel* pChannelMap)
{
    /* If the channel mask is set to 0, just assume a default Win32 channel map. */
    if (dwChannelMask == 0) {
        ma_channel_map_init_standard(ma_standard_channel_map_microsoft, pChannelMap, channels, channels);
    } else {
        if (channels == 1 && (dwChannelMask & SPEAKER_FRONT_CENTER) != 0) {
            pChannelMap[0] = MA_CHANNEL_MONO;
        } else {
            /* Just iterate over each bit. */
            ma_uint32 iChannel = 0;
            ma_uint32 iBit;

            for (iBit = 0; iBit < 32 && iChannel < channels; ++iBit) {
                DWORD bitValue = (dwChannelMask & (1UL << iBit));
                if (bitValue != 0) {
                    /* The bit is set. */
                    pChannelMap[iChannel] = ma_channel_id_to_ma__win32(bitValue);
                    iChannel += 1;
                }
            }
        }
    }
}

#ifdef __cplusplus
static ma_bool32 ma_is_guid_equal(const void* a, const void* b)
{
    return IsEqualGUID(*(const GUID*)a, *(const GUID*)b);
}
#else
#define ma_is_guid_equal(a, b) IsEqualGUID((const GUID*)a, (const GUID*)b)
#endif

static MA_INLINE ma_bool32 ma_is_guid_null(const void* guid)
{
    static GUID nullguid = {0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
    return ma_is_guid_equal(guid, &nullguid);
}

static ma_format ma_format_from_WAVEFORMATEX(const MA_WAVEFORMATEX* pWF)
{
    MA_ASSERT(pWF != NULL);

    if (pWF->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
        const MA_WAVEFORMATEXTENSIBLE* pWFEX = (const MA_WAVEFORMATEXTENSIBLE*)pWF;
        if (ma_is_guid_equal(&pWFEX->SubFormat, &MA_GUID_KSDATAFORMAT_SUBTYPE_PCM)) {
            if (pWFEX->Samples.wValidBitsPerSample == 32) {
                return ma_format_s32;
            }
            if (pWFEX->Samples.wValidBitsPerSample == 24) {
                if (pWFEX->wBitsPerSample == 32) {
                    return ma_format_s32;
                }
                if (pWFEX->wBitsPerSample == 24) {
                    return ma_format_s24;
                }
            }
            if (pWFEX->Samples.wValidBitsPerSample == 16) {
                return ma_format_s16;
            }
            if (pWFEX->Samples.wValidBitsPerSample == 8) {
                return ma_format_u8;
            }
        }
        if (ma_is_guid_equal(&pWFEX->SubFormat, &MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) {
            if (pWFEX->Samples.wValidBitsPerSample == 32) {
                return ma_format_f32;
            }
            /*
            if (pWFEX->Samples.wValidBitsPerSample == 64) {
                return ma_format_f64;
            }
            */
        }
    } else {
        if (pWF->wFormatTag == WAVE_FORMAT_PCM) {
            if (pWF->wBitsPerSample == 32) {
                return ma_format_s32;
            }
            if (pWF->wBitsPerSample == 24) {
                return ma_format_s24;
            }
            if (pWF->wBitsPerSample == 16) {
                return ma_format_s16;
            }
            if (pWF->wBitsPerSample == 8) {
                return ma_format_u8;
            }
        }
        if (pWF->wFormatTag == WAVE_FORMAT_IEEE_FLOAT) {
            if (pWF->wBitsPerSample == 32) {
                return ma_format_f32;
            }
            if (pWF->wBitsPerSample == 64) {
                /*return ma_format_f64;*/
            }
        }
    }

    return ma_format_unknown;
}
#endif


/*******************************************************************************

WASAPI Backend

*******************************************************************************/
#ifdef MA_HAS_WASAPI
#if 0
#if defined(_MSC_VER)
    #pragma warning(push)
    #pragma warning(disable:4091)   /* 'typedef ': ignored on left of '' when no variable is declared */
#endif
#include <audioclient.h>
#include <mmdeviceapi.h>
#if defined(_MSC_VER)
    #pragma warning(pop)
#endif
#endif  /* 0 */

static ma_result ma_device_reroute__wasapi(ma_device* pDevice, ma_device_type deviceType);

/* Some compilers don't define VerifyVersionInfoW. Need to write this ourselves. */
#define MA_WIN32_WINNT_VISTA    0x0600
#define MA_VER_MINORVERSION     0x01
#define MA_VER_MAJORVERSION     0x02
#define MA_VER_SERVICEPACKMAJOR 0x20
#define MA_VER_GREATER_EQUAL    0x03

typedef struct  {
    DWORD dwOSVersionInfoSize;
    DWORD dwMajorVersion;
    DWORD dwMinorVersion;
    DWORD dwBuildNumber;
    DWORD dwPlatformId;
    WCHAR szCSDVersion[128];
    WORD  wServicePackMajor;
    WORD  wServicePackMinor;
    WORD  wSuiteMask;
    BYTE  wProductType;
    BYTE  wReserved;
} ma_OSVERSIONINFOEXW;

typedef BOOL      (WINAPI * ma_PFNVerifyVersionInfoW) (ma_OSVERSIONINFOEXW* lpVersionInfo, DWORD dwTypeMask, DWORDLONG dwlConditionMask);
typedef ULONGLONG (WINAPI * ma_PFNVerSetConditionMask)(ULONGLONG dwlConditionMask, DWORD dwTypeBitMask, BYTE dwConditionMask);


#ifndef PROPERTYKEY_DEFINED
#define PROPERTYKEY_DEFINED
#ifndef __WATCOMC__
typedef struct
{
    GUID fmtid;
    DWORD pid;
} PROPERTYKEY;
#endif
#endif

/* Some compilers don't define PropVariantInit(). We just do this ourselves since it's just a memset(). */
static MA_INLINE void ma_PropVariantInit(MA_PROPVARIANT* pProp)
{
    MA_ZERO_OBJECT(pProp);
}


static const PROPERTYKEY MA_PKEY_Device_FriendlyName             = {{0xA45C254E, 0xDF1C, 0x4EFD, {0x80, 0x20, 0x67, 0xD1, 0x46, 0xA8, 0x50, 0xE0}}, 14};
static const PROPERTYKEY MA_PKEY_AudioEngine_DeviceFormat        = {{0xF19F064D, 0x82C,  0x4E27, {0xBC, 0x73, 0x68, 0x82, 0xA1, 0xBB, 0x8E, 0x4C}},  0};

static const IID MA_IID_IUnknown                                 = {0x00000000, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}}; /* 00000000-0000-0000-C000-000000000046 */
#if !defined(MA_WIN32_DESKTOP) && !defined(MA_WIN32_GDK)
static const IID MA_IID_IAgileObject                             = {0x94EA2B94, 0xE9CC, 0x49E0, {0xC0, 0xFF, 0xEE, 0x64, 0xCA, 0x8F, 0x5B, 0x90}}; /* 94EA2B94-E9CC-49E0-C0FF-EE64CA8F5B90 */
#endif

static const IID MA_IID_IAudioClient                             = {0x1CB9AD4C, 0xDBFA, 0x4C32, {0xB1, 0x78, 0xC2, 0xF5, 0x68, 0xA7, 0x03, 0xB2}}; /* 1CB9AD4C-DBFA-4C32-B178-C2F568A703B2 = __uuidof(IAudioClient) */
static const IID MA_IID_IAudioClient2                            = {0x726778CD, 0xF60A, 0x4EDA, {0x82, 0xDE, 0xE4, 0x76, 0x10, 0xCD, 0x78, 0xAA}}; /* 726778CD-F60A-4EDA-82DE-E47610CD78AA = __uuidof(IAudioClient2) */
static const IID MA_IID_IAudioClient3                            = {0x7ED4EE07, 0x8E67, 0x4CD4, {0x8C, 0x1A, 0x2B, 0x7A, 0x59, 0x87, 0xAD, 0x42}}; /* 7ED4EE07-8E67-4CD4-8C1A-2B7A5987AD42 = __uuidof(IAudioClient3) */
static const IID MA_IID_IAudioRenderClient                       = {0xF294ACFC, 0x3146, 0x4483, {0xA7, 0xBF, 0xAD, 0xDC, 0xA7, 0xC2, 0x60, 0xE2}}; /* F294ACFC-3146-4483-A7BF-ADDCA7C260E2 = __uuidof(IAudioRenderClient) */
static const IID MA_IID_IAudioCaptureClient                      = {0xC8ADBD64, 0xE71E, 0x48A0, {0xA4, 0xDE, 0x18, 0x5C, 0x39, 0x5C, 0xD3, 0x17}}; /* C8ADBD64-E71E-48A0-A4DE-185C395CD317 = __uuidof(IAudioCaptureClient) */
static const IID MA_IID_IMMNotificationClient                    = {0x7991EEC9, 0x7E89, 0x4D85, {0x83, 0x90, 0x6C, 0x70, 0x3C, 0xEC, 0x60, 0xC0}}; /* 7991EEC9-7E89-4D85-8390-6C703CEC60C0 = __uuidof(IMMNotificationClient) */
#if !defined(MA_WIN32_DESKTOP) && !defined(MA_WIN32_GDK)
static const IID MA_IID_DEVINTERFACE_AUDIO_RENDER                = {0xE6327CAD, 0xDCEC, 0x4949, {0xAE, 0x8A, 0x99, 0x1E, 0x97, 0x6A, 0x79, 0xD2}}; /* E6327CAD-DCEC-4949-AE8A-991E976A79D2 */
static const IID MA_IID_DEVINTERFACE_AUDIO_CAPTURE               = {0x2EEF81BE, 0x33FA, 0x4800, {0x96, 0x70, 0x1C, 0xD4, 0x74, 0x97, 0x2C, 0x3F}}; /* 2EEF81BE-33FA-4800-9670-1CD474972C3F */
static const IID MA_IID_IActivateAudioInterfaceCompletionHandler = {0x41D949AB, 0x9862, 0x444A, {0x80, 0xF6, 0xC2, 0x61, 0x33, 0x4D, 0xA5, 0xEB}}; /* 41D949AB-9862-444A-80F6-C261334DA5EB */
#endif

static const IID MA_CLSID_MMDeviceEnumerator                     = {0xBCDE0395, 0xE52F, 0x467C, {0x8E, 0x3D, 0xC4, 0x57, 0x92, 0x91, 0x69, 0x2E}}; /* BCDE0395-E52F-467C-8E3D-C4579291692E = __uuidof(MMDeviceEnumerator) */
static const IID MA_IID_IMMDeviceEnumerator                      = {0xA95664D2, 0x9614, 0x4F35, {0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36, 0x17, 0xE6}}; /* A95664D2-9614-4F35-A746-DE8DB63617E6 = __uuidof(IMMDeviceEnumerator) */

#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
#define MA_MM_DEVICE_STATE_ACTIVE                          1
#define MA_MM_DEVICE_STATE_DISABLED                        2
#define MA_MM_DEVICE_STATE_NOTPRESENT                      4
#define MA_MM_DEVICE_STATE_UNPLUGGED                       8

typedef struct ma_IMMDeviceEnumerator                      ma_IMMDeviceEnumerator;
typedef struct ma_IMMDeviceCollection                      ma_IMMDeviceCollection;
typedef struct ma_IMMDevice                                ma_IMMDevice;
#else
typedef struct ma_IActivateAudioInterfaceCompletionHandler ma_IActivateAudioInterfaceCompletionHandler;
typedef struct ma_IActivateAudioInterfaceAsyncOperation    ma_IActivateAudioInterfaceAsyncOperation;
#endif
typedef struct ma_IPropertyStore                           ma_IPropertyStore;
typedef struct ma_IAudioClient                             ma_IAudioClient;
typedef struct ma_IAudioClient2                            ma_IAudioClient2;
typedef struct ma_IAudioClient3                            ma_IAudioClient3;
typedef struct ma_IAudioRenderClient                       ma_IAudioRenderClient;
typedef struct ma_IAudioCaptureClient                      ma_IAudioCaptureClient;

typedef ma_int64                                           MA_REFERENCE_TIME;

#define MA_AUDCLNT_STREAMFLAGS_CROSSPROCESS                0x00010000
#define MA_AUDCLNT_STREAMFLAGS_LOOPBACK                    0x00020000
#define MA_AUDCLNT_STREAMFLAGS_EVENTCALLBACK               0x00040000
#define MA_AUDCLNT_STREAMFLAGS_NOPERSIST                   0x00080000
#define MA_AUDCLNT_STREAMFLAGS_RATEADJUST                  0x00100000
#define MA_AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY         0x08000000
#define MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM              0x80000000
#define MA_AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED          0x10000000
#define MA_AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE               0x20000000
#define MA_AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED    0x40000000

/* Buffer flags. */
#define MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY          1
#define MA_AUDCLNT_BUFFERFLAGS_SILENT                      2
#define MA_AUDCLNT_BUFFERFLAGS_TIMESTAMP_ERROR             4

typedef enum
{
    ma_eRender  = 0,
    ma_eCapture = 1,
    ma_eAll     = 2
} ma_EDataFlow;

typedef enum
{
    ma_eConsole        = 0,
    ma_eMultimedia     = 1,
    ma_eCommunications = 2
} ma_ERole;

typedef enum
{
    MA_AUDCLNT_SHAREMODE_SHARED,
    MA_AUDCLNT_SHAREMODE_EXCLUSIVE
} MA_AUDCLNT_SHAREMODE;

typedef enum
{
    MA_AudioCategory_Other = 0  /* <-- miniaudio is only caring about Other. */
} MA_AUDIO_STREAM_CATEGORY;

typedef struct
{
    ma_uint32 cbSize;
    BOOL bIsOffload;
    MA_AUDIO_STREAM_CATEGORY eCategory;
} ma_AudioClientProperties;

/* IUnknown */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IUnknown* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IUnknown* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IUnknown* pThis);
} ma_IUnknownVtbl;
struct ma_IUnknown
{
    ma_IUnknownVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IUnknown_QueryInterface(ma_IUnknown* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IUnknown_AddRef(ma_IUnknown* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IUnknown_Release(ma_IUnknown* pThis)                                                { return pThis->lpVtbl->Release(pThis); }

#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    /* IMMNotificationClient */
    typedef struct
    {
        /* IUnknown */
        HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMNotificationClient* pThis, const IID* const riid, void** ppObject);
        ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IMMNotificationClient* pThis);
        ULONG   (STDMETHODCALLTYPE * Release)       (ma_IMMNotificationClient* pThis);

        /* IMMNotificationClient */
        HRESULT (STDMETHODCALLTYPE * OnDeviceStateChanged)  (ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID, DWORD dwNewState);
        HRESULT (STDMETHODCALLTYPE * OnDeviceAdded)         (ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID);
        HRESULT (STDMETHODCALLTYPE * OnDeviceRemoved)       (ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID);
        HRESULT (STDMETHODCALLTYPE * OnDefaultDeviceChanged)(ma_IMMNotificationClient* pThis, ma_EDataFlow dataFlow, ma_ERole role, const WCHAR* pDefaultDeviceID);
        HRESULT (STDMETHODCALLTYPE * OnPropertyValueChanged)(ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID, const PROPERTYKEY key);
    } ma_IMMNotificationClientVtbl;

    /* IMMDeviceEnumerator */
    typedef struct
    {
        /* IUnknown */
        HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMDeviceEnumerator* pThis, const IID* const riid, void** ppObject);
        ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IMMDeviceEnumerator* pThis);
        ULONG   (STDMETHODCALLTYPE * Release)       (ma_IMMDeviceEnumerator* pThis);

        /* IMMDeviceEnumerator */
        HRESULT (STDMETHODCALLTYPE * EnumAudioEndpoints)                    (ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, DWORD dwStateMask, ma_IMMDeviceCollection** ppDevices);
        HRESULT (STDMETHODCALLTYPE * GetDefaultAudioEndpoint)               (ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, ma_ERole role, ma_IMMDevice** ppEndpoint);
        HRESULT (STDMETHODCALLTYPE * GetDevice)                             (ma_IMMDeviceEnumerator* pThis, const WCHAR* pID, ma_IMMDevice** ppDevice);
        HRESULT (STDMETHODCALLTYPE * RegisterEndpointNotificationCallback)  (ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient);
        HRESULT (STDMETHODCALLTYPE * UnregisterEndpointNotificationCallback)(ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient);
    } ma_IMMDeviceEnumeratorVtbl;
    struct ma_IMMDeviceEnumerator
    {
        ma_IMMDeviceEnumeratorVtbl* lpVtbl;
    };
    static MA_INLINE HRESULT ma_IMMDeviceEnumerator_QueryInterface(ma_IMMDeviceEnumerator* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
    static MA_INLINE ULONG   ma_IMMDeviceEnumerator_AddRef(ma_IMMDeviceEnumerator* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
    static MA_INLINE ULONG   ma_IMMDeviceEnumerator_Release(ma_IMMDeviceEnumerator* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
    static MA_INLINE HRESULT ma_IMMDeviceEnumerator_EnumAudioEndpoints(ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, DWORD dwStateMask, ma_IMMDeviceCollection** ppDevices) { return pThis->lpVtbl->EnumAudioEndpoints(pThis, dataFlow, dwStateMask, ppDevices); }
    static MA_INLINE HRESULT ma_IMMDeviceEnumerator_GetDefaultAudioEndpoint(ma_IMMDeviceEnumerator* pThis, ma_EDataFlow dataFlow, ma_ERole role, ma_IMMDevice** ppEndpoint) { return pThis->lpVtbl->GetDefaultAudioEndpoint(pThis, dataFlow, role, ppEndpoint); }
    static MA_INLINE HRESULT ma_IMMDeviceEnumerator_GetDevice(ma_IMMDeviceEnumerator* pThis, const WCHAR* pID, ma_IMMDevice** ppDevice) { return pThis->lpVtbl->GetDevice(pThis, pID, ppDevice); }
    static MA_INLINE HRESULT ma_IMMDeviceEnumerator_RegisterEndpointNotificationCallback(ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient) { return pThis->lpVtbl->RegisterEndpointNotificationCallback(pThis, pClient); }
    static MA_INLINE HRESULT ma_IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(ma_IMMDeviceEnumerator* pThis, ma_IMMNotificationClient* pClient) { return pThis->lpVtbl->UnregisterEndpointNotificationCallback(pThis, pClient); }


    /* IMMDeviceCollection */
    typedef struct
    {
        /* IUnknown */
        HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMDeviceCollection* pThis, const IID* const riid, void** ppObject);
        ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IMMDeviceCollection* pThis);
        ULONG   (STDMETHODCALLTYPE * Release)       (ma_IMMDeviceCollection* pThis);

        /* IMMDeviceCollection */
        HRESULT (STDMETHODCALLTYPE * GetCount)(ma_IMMDeviceCollection* pThis, UINT* pDevices);
        HRESULT (STDMETHODCALLTYPE * Item)    (ma_IMMDeviceCollection* pThis, UINT nDevice, ma_IMMDevice** ppDevice);
    } ma_IMMDeviceCollectionVtbl;
    struct ma_IMMDeviceCollection
    {
        ma_IMMDeviceCollectionVtbl* lpVtbl;
    };
    static MA_INLINE HRESULT ma_IMMDeviceCollection_QueryInterface(ma_IMMDeviceCollection* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
    static MA_INLINE ULONG   ma_IMMDeviceCollection_AddRef(ma_IMMDeviceCollection* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
    static MA_INLINE ULONG   ma_IMMDeviceCollection_Release(ma_IMMDeviceCollection* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
    static MA_INLINE HRESULT ma_IMMDeviceCollection_GetCount(ma_IMMDeviceCollection* pThis, UINT* pDevices)                               { return pThis->lpVtbl->GetCount(pThis, pDevices); }
    static MA_INLINE HRESULT ma_IMMDeviceCollection_Item(ma_IMMDeviceCollection* pThis, UINT nDevice, ma_IMMDevice** ppDevice)            { return pThis->lpVtbl->Item(pThis, nDevice, ppDevice); }


    /* IMMDevice */
    typedef struct
    {
        /* IUnknown */
        HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IMMDevice* pThis, const IID* const riid, void** ppObject);
        ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IMMDevice* pThis);
        ULONG   (STDMETHODCALLTYPE * Release)       (ma_IMMDevice* pThis);

        /* IMMDevice */
        HRESULT (STDMETHODCALLTYPE * Activate)         (ma_IMMDevice* pThis, const IID* const iid, DWORD dwClsCtx, MA_PROPVARIANT* pActivationParams, void** ppInterface);
        HRESULT (STDMETHODCALLTYPE * OpenPropertyStore)(ma_IMMDevice* pThis, DWORD stgmAccess, ma_IPropertyStore** ppProperties);
        HRESULT (STDMETHODCALLTYPE * GetId)            (ma_IMMDevice* pThis, WCHAR** pID);
        HRESULT (STDMETHODCALLTYPE * GetState)         (ma_IMMDevice* pThis, DWORD *pState);
    } ma_IMMDeviceVtbl;
    struct ma_IMMDevice
    {
        ma_IMMDeviceVtbl* lpVtbl;
    };
    static MA_INLINE HRESULT ma_IMMDevice_QueryInterface(ma_IMMDevice* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
    static MA_INLINE ULONG   ma_IMMDevice_AddRef(ma_IMMDevice* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
    static MA_INLINE ULONG   ma_IMMDevice_Release(ma_IMMDevice* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
    static MA_INLINE HRESULT ma_IMMDevice_Activate(ma_IMMDevice* pThis, const IID* const iid, DWORD dwClsCtx, MA_PROPVARIANT* pActivationParams, void** ppInterface) { return pThis->lpVtbl->Activate(pThis, iid, dwClsCtx, pActivationParams, ppInterface); }
    static MA_INLINE HRESULT ma_IMMDevice_OpenPropertyStore(ma_IMMDevice* pThis, DWORD stgmAccess, ma_IPropertyStore** ppProperties) { return pThis->lpVtbl->OpenPropertyStore(pThis, stgmAccess, ppProperties); }
    static MA_INLINE HRESULT ma_IMMDevice_GetId(ma_IMMDevice* pThis, WCHAR** pID)                                     { return pThis->lpVtbl->GetId(pThis, pID); }
    static MA_INLINE HRESULT ma_IMMDevice_GetState(ma_IMMDevice* pThis, DWORD *pState)                                { return pThis->lpVtbl->GetState(pThis, pState); }
#else
    /* IActivateAudioInterfaceAsyncOperation */
    typedef struct
    {
        /* IUnknown */
        HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IActivateAudioInterfaceAsyncOperation* pThis, const IID* const riid, void** ppObject);
        ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IActivateAudioInterfaceAsyncOperation* pThis);
        ULONG   (STDMETHODCALLTYPE * Release)       (ma_IActivateAudioInterfaceAsyncOperation* pThis);

        /* IActivateAudioInterfaceAsyncOperation */
        HRESULT (STDMETHODCALLTYPE * GetActivateResult)(ma_IActivateAudioInterfaceAsyncOperation* pThis, HRESULT *pActivateResult, ma_IUnknown** ppActivatedInterface);
    } ma_IActivateAudioInterfaceAsyncOperationVtbl;
    struct ma_IActivateAudioInterfaceAsyncOperation
    {
        ma_IActivateAudioInterfaceAsyncOperationVtbl* lpVtbl;
    };
    static MA_INLINE HRESULT ma_IActivateAudioInterfaceAsyncOperation_QueryInterface(ma_IActivateAudioInterfaceAsyncOperation* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
    static MA_INLINE ULONG   ma_IActivateAudioInterfaceAsyncOperation_AddRef(ma_IActivateAudioInterfaceAsyncOperation* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
    static MA_INLINE ULONG   ma_IActivateAudioInterfaceAsyncOperation_Release(ma_IActivateAudioInterfaceAsyncOperation* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
    static MA_INLINE HRESULT ma_IActivateAudioInterfaceAsyncOperation_GetActivateResult(ma_IActivateAudioInterfaceAsyncOperation* pThis, HRESULT *pActivateResult, ma_IUnknown** ppActivatedInterface) { return pThis->lpVtbl->GetActivateResult(pThis, pActivateResult, ppActivatedInterface); }
#endif

/* IPropertyStore */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IPropertyStore* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IPropertyStore* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IPropertyStore* pThis);

    /* IPropertyStore */
    HRESULT (STDMETHODCALLTYPE * GetCount)(ma_IPropertyStore* pThis, DWORD* pPropCount);
    HRESULT (STDMETHODCALLTYPE * GetAt)   (ma_IPropertyStore* pThis, DWORD propIndex, PROPERTYKEY* pPropKey);
    HRESULT (STDMETHODCALLTYPE * GetValue)(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, MA_PROPVARIANT* pPropVar);
    HRESULT (STDMETHODCALLTYPE * SetValue)(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, const MA_PROPVARIANT* const pPropVar);
    HRESULT (STDMETHODCALLTYPE * Commit)  (ma_IPropertyStore* pThis);
} ma_IPropertyStoreVtbl;
struct ma_IPropertyStore
{
    ma_IPropertyStoreVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IPropertyStore_QueryInterface(ma_IPropertyStore* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IPropertyStore_AddRef(ma_IPropertyStore* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IPropertyStore_Release(ma_IPropertyStore* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IPropertyStore_GetCount(ma_IPropertyStore* pThis, DWORD* pPropCount)                            { return pThis->lpVtbl->GetCount(pThis, pPropCount); }
static MA_INLINE HRESULT ma_IPropertyStore_GetAt(ma_IPropertyStore* pThis, DWORD propIndex, PROPERTYKEY* pPropKey)          { return pThis->lpVtbl->GetAt(pThis, propIndex, pPropKey); }
static MA_INLINE HRESULT ma_IPropertyStore_GetValue(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, MA_PROPVARIANT* pPropVar) { return pThis->lpVtbl->GetValue(pThis, pKey, pPropVar); }
static MA_INLINE HRESULT ma_IPropertyStore_SetValue(ma_IPropertyStore* pThis, const PROPERTYKEY* const pKey, const MA_PROPVARIANT* const pPropVar) { return pThis->lpVtbl->SetValue(pThis, pKey, pPropVar); }
static MA_INLINE HRESULT ma_IPropertyStore_Commit(ma_IPropertyStore* pThis)                                                 { return pThis->lpVtbl->Commit(pThis); }


/* IAudioClient */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioClient* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IAudioClient* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IAudioClient* pThis);

    /* IAudioClient */
    HRESULT (STDMETHODCALLTYPE * Initialize)       (ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid);
    HRESULT (STDMETHODCALLTYPE * GetBufferSize)    (ma_IAudioClient* pThis, ma_uint32* pNumBufferFrames);
    HRESULT (STDMETHODCALLTYPE * GetStreamLatency) (ma_IAudioClient* pThis, MA_REFERENCE_TIME* pLatency);
    HRESULT (STDMETHODCALLTYPE * GetCurrentPadding)(ma_IAudioClient* pThis, ma_uint32* pNumPaddingFrames);
    HRESULT (STDMETHODCALLTYPE * IsFormatSupported)(ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, const MA_WAVEFORMATEX* pFormat, MA_WAVEFORMATEX** ppClosestMatch);
    HRESULT (STDMETHODCALLTYPE * GetMixFormat)     (ma_IAudioClient* pThis, MA_WAVEFORMATEX** ppDeviceFormat);
    HRESULT (STDMETHODCALLTYPE * GetDevicePeriod)  (ma_IAudioClient* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod);
    HRESULT (STDMETHODCALLTYPE * Start)            (ma_IAudioClient* pThis);
    HRESULT (STDMETHODCALLTYPE * Stop)             (ma_IAudioClient* pThis);
    HRESULT (STDMETHODCALLTYPE * Reset)            (ma_IAudioClient* pThis);
    HRESULT (STDMETHODCALLTYPE * SetEventHandle)   (ma_IAudioClient* pThis, HANDLE eventHandle);
    HRESULT (STDMETHODCALLTYPE * GetService)       (ma_IAudioClient* pThis, const IID* const riid, void** pp);
} ma_IAudioClientVtbl;
struct ma_IAudioClient
{
    ma_IAudioClientVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IAudioClient_QueryInterface(ma_IAudioClient* pThis, const IID* const riid, void** ppObject)    { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IAudioClient_AddRef(ma_IAudioClient* pThis)                                                    { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IAudioClient_Release(ma_IAudioClient* pThis)                                                   { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IAudioClient_Initialize(ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid) { return pThis->lpVtbl->Initialize(pThis, shareMode, streamFlags, bufferDuration, periodicity, pFormat, pAudioSessionGuid); }
static MA_INLINE HRESULT ma_IAudioClient_GetBufferSize(ma_IAudioClient* pThis, ma_uint32* pNumBufferFrames)                { return pThis->lpVtbl->GetBufferSize(pThis, pNumBufferFrames); }
static MA_INLINE HRESULT ma_IAudioClient_GetStreamLatency(ma_IAudioClient* pThis, MA_REFERENCE_TIME* pLatency)             { return pThis->lpVtbl->GetStreamLatency(pThis, pLatency); }
static MA_INLINE HRESULT ma_IAudioClient_GetCurrentPadding(ma_IAudioClient* pThis, ma_uint32* pNumPaddingFrames)           { return pThis->lpVtbl->GetCurrentPadding(pThis, pNumPaddingFrames); }
static MA_INLINE HRESULT ma_IAudioClient_IsFormatSupported(ma_IAudioClient* pThis, MA_AUDCLNT_SHAREMODE shareMode, const MA_WAVEFORMATEX* pFormat, MA_WAVEFORMATEX** ppClosestMatch) { return pThis->lpVtbl->IsFormatSupported(pThis, shareMode, pFormat, ppClosestMatch); }
static MA_INLINE HRESULT ma_IAudioClient_GetMixFormat(ma_IAudioClient* pThis, MA_WAVEFORMATEX** ppDeviceFormat)            { return pThis->lpVtbl->GetMixFormat(pThis, ppDeviceFormat); }
static MA_INLINE HRESULT ma_IAudioClient_GetDevicePeriod(ma_IAudioClient* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod) { return pThis->lpVtbl->GetDevicePeriod(pThis, pDefaultDevicePeriod, pMinimumDevicePeriod); }
static MA_INLINE HRESULT ma_IAudioClient_Start(ma_IAudioClient* pThis)                                                     { return pThis->lpVtbl->Start(pThis); }
static MA_INLINE HRESULT ma_IAudioClient_Stop(ma_IAudioClient* pThis)                                                      { return pThis->lpVtbl->Stop(pThis); }
static MA_INLINE HRESULT ma_IAudioClient_Reset(ma_IAudioClient* pThis)                                                     { return pThis->lpVtbl->Reset(pThis); }
static MA_INLINE HRESULT ma_IAudioClient_SetEventHandle(ma_IAudioClient* pThis, HANDLE eventHandle)                        { return pThis->lpVtbl->SetEventHandle(pThis, eventHandle); }
static MA_INLINE HRESULT ma_IAudioClient_GetService(ma_IAudioClient* pThis, const IID* const riid, void** pp)              { return pThis->lpVtbl->GetService(pThis, riid, pp); }

/* IAudioClient2 */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioClient2* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IAudioClient2* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IAudioClient2* pThis);

    /* IAudioClient */
    HRESULT (STDMETHODCALLTYPE * Initialize)       (ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid);
    HRESULT (STDMETHODCALLTYPE * GetBufferSize)    (ma_IAudioClient2* pThis, ma_uint32* pNumBufferFrames);
    HRESULT (STDMETHODCALLTYPE * GetStreamLatency) (ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pLatency);
    HRESULT (STDMETHODCALLTYPE * GetCurrentPadding)(ma_IAudioClient2* pThis, ma_uint32* pNumPaddingFrames);
    HRESULT (STDMETHODCALLTYPE * IsFormatSupported)(ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, const MA_WAVEFORMATEX* pFormat, MA_WAVEFORMATEX** ppClosestMatch);
    HRESULT (STDMETHODCALLTYPE * GetMixFormat)     (ma_IAudioClient2* pThis, MA_WAVEFORMATEX** ppDeviceFormat);
    HRESULT (STDMETHODCALLTYPE * GetDevicePeriod)  (ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod);
    HRESULT (STDMETHODCALLTYPE * Start)            (ma_IAudioClient2* pThis);
    HRESULT (STDMETHODCALLTYPE * Stop)             (ma_IAudioClient2* pThis);
    HRESULT (STDMETHODCALLTYPE * Reset)            (ma_IAudioClient2* pThis);
    HRESULT (STDMETHODCALLTYPE * SetEventHandle)   (ma_IAudioClient2* pThis, HANDLE eventHandle);
    HRESULT (STDMETHODCALLTYPE * GetService)       (ma_IAudioClient2* pThis, const IID* const riid, void** pp);

    /* IAudioClient2 */
    HRESULT (STDMETHODCALLTYPE * IsOffloadCapable)   (ma_IAudioClient2* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable);
    HRESULT (STDMETHODCALLTYPE * SetClientProperties)(ma_IAudioClient2* pThis, const ma_AudioClientProperties* pProperties);
    HRESULT (STDMETHODCALLTYPE * GetBufferSizeLimits)(ma_IAudioClient2* pThis, const MA_WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration);
} ma_IAudioClient2Vtbl;
struct ma_IAudioClient2
{
    ma_IAudioClient2Vtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IAudioClient2_QueryInterface(ma_IAudioClient2* pThis, const IID* const riid, void** ppObject)    { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IAudioClient2_AddRef(ma_IAudioClient2* pThis)                                                    { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IAudioClient2_Release(ma_IAudioClient2* pThis)                                                   { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IAudioClient2_Initialize(ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid) { return pThis->lpVtbl->Initialize(pThis, shareMode, streamFlags, bufferDuration, periodicity, pFormat, pAudioSessionGuid); }
static MA_INLINE HRESULT ma_IAudioClient2_GetBufferSize(ma_IAudioClient2* pThis, ma_uint32* pNumBufferFrames)                { return pThis->lpVtbl->GetBufferSize(pThis, pNumBufferFrames); }
static MA_INLINE HRESULT ma_IAudioClient2_GetStreamLatency(ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pLatency)             { return pThis->lpVtbl->GetStreamLatency(pThis, pLatency); }
static MA_INLINE HRESULT ma_IAudioClient2_GetCurrentPadding(ma_IAudioClient2* pThis, ma_uint32* pNumPaddingFrames)           { return pThis->lpVtbl->GetCurrentPadding(pThis, pNumPaddingFrames); }
static MA_INLINE HRESULT ma_IAudioClient2_IsFormatSupported(ma_IAudioClient2* pThis, MA_AUDCLNT_SHAREMODE shareMode, const MA_WAVEFORMATEX* pFormat, MA_WAVEFORMATEX** ppClosestMatch) { return pThis->lpVtbl->IsFormatSupported(pThis, shareMode, pFormat, ppClosestMatch); }
static MA_INLINE HRESULT ma_IAudioClient2_GetMixFormat(ma_IAudioClient2* pThis, MA_WAVEFORMATEX** ppDeviceFormat)            { return pThis->lpVtbl->GetMixFormat(pThis, ppDeviceFormat); }
static MA_INLINE HRESULT ma_IAudioClient2_GetDevicePeriod(ma_IAudioClient2* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod) { return pThis->lpVtbl->GetDevicePeriod(pThis, pDefaultDevicePeriod, pMinimumDevicePeriod); }
static MA_INLINE HRESULT ma_IAudioClient2_Start(ma_IAudioClient2* pThis)                                                     { return pThis->lpVtbl->Start(pThis); }
static MA_INLINE HRESULT ma_IAudioClient2_Stop(ma_IAudioClient2* pThis)                                                      { return pThis->lpVtbl->Stop(pThis); }
static MA_INLINE HRESULT ma_IAudioClient2_Reset(ma_IAudioClient2* pThis)                                                     { return pThis->lpVtbl->Reset(pThis); }
static MA_INLINE HRESULT ma_IAudioClient2_SetEventHandle(ma_IAudioClient2* pThis, HANDLE eventHandle)                        { return pThis->lpVtbl->SetEventHandle(pThis, eventHandle); }
static MA_INLINE HRESULT ma_IAudioClient2_GetService(ma_IAudioClient2* pThis, const IID* const riid, void** pp)              { return pThis->lpVtbl->GetService(pThis, riid, pp); }
static MA_INLINE HRESULT ma_IAudioClient2_IsOffloadCapable(ma_IAudioClient2* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable) { return pThis->lpVtbl->IsOffloadCapable(pThis, category, pOffloadCapable); }
static MA_INLINE HRESULT ma_IAudioClient2_SetClientProperties(ma_IAudioClient2* pThis, const ma_AudioClientProperties* pProperties)           { return pThis->lpVtbl->SetClientProperties(pThis, pProperties); }
static MA_INLINE HRESULT ma_IAudioClient2_GetBufferSizeLimits(ma_IAudioClient2* pThis, const MA_WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration) { return pThis->lpVtbl->GetBufferSizeLimits(pThis, pFormat, eventDriven, pMinBufferDuration, pMaxBufferDuration); }


/* IAudioClient3 */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioClient3* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IAudioClient3* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IAudioClient3* pThis);

    /* IAudioClient */
    HRESULT (STDMETHODCALLTYPE * Initialize)       (ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid);
    HRESULT (STDMETHODCALLTYPE * GetBufferSize)    (ma_IAudioClient3* pThis, ma_uint32* pNumBufferFrames);
    HRESULT (STDMETHODCALLTYPE * GetStreamLatency) (ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pLatency);
    HRESULT (STDMETHODCALLTYPE * GetCurrentPadding)(ma_IAudioClient3* pThis, ma_uint32* pNumPaddingFrames);
    HRESULT (STDMETHODCALLTYPE * IsFormatSupported)(ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, const MA_WAVEFORMATEX* pFormat, MA_WAVEFORMATEX** ppClosestMatch);
    HRESULT (STDMETHODCALLTYPE * GetMixFormat)     (ma_IAudioClient3* pThis, MA_WAVEFORMATEX** ppDeviceFormat);
    HRESULT (STDMETHODCALLTYPE * GetDevicePeriod)  (ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod);
    HRESULT (STDMETHODCALLTYPE * Start)            (ma_IAudioClient3* pThis);
    HRESULT (STDMETHODCALLTYPE * Stop)             (ma_IAudioClient3* pThis);
    HRESULT (STDMETHODCALLTYPE * Reset)            (ma_IAudioClient3* pThis);
    HRESULT (STDMETHODCALLTYPE * SetEventHandle)   (ma_IAudioClient3* pThis, HANDLE eventHandle);
    HRESULT (STDMETHODCALLTYPE * GetService)       (ma_IAudioClient3* pThis, const IID* const riid, void** pp);

    /* IAudioClient2 */
    HRESULT (STDMETHODCALLTYPE * IsOffloadCapable)   (ma_IAudioClient3* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable);
    HRESULT (STDMETHODCALLTYPE * SetClientProperties)(ma_IAudioClient3* pThis, const ma_AudioClientProperties* pProperties);
    HRESULT (STDMETHODCALLTYPE * GetBufferSizeLimits)(ma_IAudioClient3* pThis, const MA_WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration);

    /* IAudioClient3 */
    HRESULT (STDMETHODCALLTYPE * GetSharedModeEnginePeriod)       (ma_IAudioClient3* pThis, const MA_WAVEFORMATEX* pFormat, ma_uint32* pDefaultPeriodInFrames, ma_uint32* pFundamentalPeriodInFrames, ma_uint32* pMinPeriodInFrames, ma_uint32* pMaxPeriodInFrames);
    HRESULT (STDMETHODCALLTYPE * GetCurrentSharedModeEnginePeriod)(ma_IAudioClient3* pThis, MA_WAVEFORMATEX** ppFormat, ma_uint32* pCurrentPeriodInFrames);
    HRESULT (STDMETHODCALLTYPE * InitializeSharedAudioStream)     (ma_IAudioClient3* pThis, DWORD streamFlags, ma_uint32 periodInFrames, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid);
} ma_IAudioClient3Vtbl;
struct ma_IAudioClient3
{
    ma_IAudioClient3Vtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IAudioClient3_QueryInterface(ma_IAudioClient3* pThis, const IID* const riid, void** ppObject)    { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IAudioClient3_AddRef(ma_IAudioClient3* pThis)                                                    { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IAudioClient3_Release(ma_IAudioClient3* pThis)                                                   { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IAudioClient3_Initialize(ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, DWORD streamFlags, MA_REFERENCE_TIME bufferDuration, MA_REFERENCE_TIME periodicity, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGuid) { return pThis->lpVtbl->Initialize(pThis, shareMode, streamFlags, bufferDuration, periodicity, pFormat, pAudioSessionGuid); }
static MA_INLINE HRESULT ma_IAudioClient3_GetBufferSize(ma_IAudioClient3* pThis, ma_uint32* pNumBufferFrames)                { return pThis->lpVtbl->GetBufferSize(pThis, pNumBufferFrames); }
static MA_INLINE HRESULT ma_IAudioClient3_GetStreamLatency(ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pLatency)             { return pThis->lpVtbl->GetStreamLatency(pThis, pLatency); }
static MA_INLINE HRESULT ma_IAudioClient3_GetCurrentPadding(ma_IAudioClient3* pThis, ma_uint32* pNumPaddingFrames)           { return pThis->lpVtbl->GetCurrentPadding(pThis, pNumPaddingFrames); }
static MA_INLINE HRESULT ma_IAudioClient3_IsFormatSupported(ma_IAudioClient3* pThis, MA_AUDCLNT_SHAREMODE shareMode, const MA_WAVEFORMATEX* pFormat, MA_WAVEFORMATEX** ppClosestMatch) { return pThis->lpVtbl->IsFormatSupported(pThis, shareMode, pFormat, ppClosestMatch); }
static MA_INLINE HRESULT ma_IAudioClient3_GetMixFormat(ma_IAudioClient3* pThis, MA_WAVEFORMATEX** ppDeviceFormat)               { return pThis->lpVtbl->GetMixFormat(pThis, ppDeviceFormat); }
static MA_INLINE HRESULT ma_IAudioClient3_GetDevicePeriod(ma_IAudioClient3* pThis, MA_REFERENCE_TIME* pDefaultDevicePeriod, MA_REFERENCE_TIME* pMinimumDevicePeriod) { return pThis->lpVtbl->GetDevicePeriod(pThis, pDefaultDevicePeriod, pMinimumDevicePeriod); }
static MA_INLINE HRESULT ma_IAudioClient3_Start(ma_IAudioClient3* pThis)                                                     { return pThis->lpVtbl->Start(pThis); }
static MA_INLINE HRESULT ma_IAudioClient3_Stop(ma_IAudioClient3* pThis)                                                      { return pThis->lpVtbl->Stop(pThis); }
static MA_INLINE HRESULT ma_IAudioClient3_Reset(ma_IAudioClient3* pThis)                                                     { return pThis->lpVtbl->Reset(pThis); }
static MA_INLINE HRESULT ma_IAudioClient3_SetEventHandle(ma_IAudioClient3* pThis, HANDLE eventHandle)                        { return pThis->lpVtbl->SetEventHandle(pThis, eventHandle); }
static MA_INLINE HRESULT ma_IAudioClient3_GetService(ma_IAudioClient3* pThis, const IID* const riid, void** pp)              { return pThis->lpVtbl->GetService(pThis, riid, pp); }
static MA_INLINE HRESULT ma_IAudioClient3_IsOffloadCapable(ma_IAudioClient3* pThis, MA_AUDIO_STREAM_CATEGORY category, BOOL* pOffloadCapable) { return pThis->lpVtbl->IsOffloadCapable(pThis, category, pOffloadCapable); }
static MA_INLINE HRESULT ma_IAudioClient3_SetClientProperties(ma_IAudioClient3* pThis, const ma_AudioClientProperties* pProperties)           { return pThis->lpVtbl->SetClientProperties(pThis, pProperties); }
static MA_INLINE HRESULT ma_IAudioClient3_GetBufferSizeLimits(ma_IAudioClient3* pThis, const MA_WAVEFORMATEX* pFormat, BOOL eventDriven, MA_REFERENCE_TIME* pMinBufferDuration, MA_REFERENCE_TIME* pMaxBufferDuration) { return pThis->lpVtbl->GetBufferSizeLimits(pThis, pFormat, eventDriven, pMinBufferDuration, pMaxBufferDuration); }
static MA_INLINE HRESULT ma_IAudioClient3_GetSharedModeEnginePeriod(ma_IAudioClient3* pThis, const MA_WAVEFORMATEX* pFormat, ma_uint32* pDefaultPeriodInFrames, ma_uint32* pFundamentalPeriodInFrames, ma_uint32* pMinPeriodInFrames, ma_uint32* pMaxPeriodInFrames) { return pThis->lpVtbl->GetSharedModeEnginePeriod(pThis, pFormat, pDefaultPeriodInFrames, pFundamentalPeriodInFrames, pMinPeriodInFrames, pMaxPeriodInFrames); }
static MA_INLINE HRESULT ma_IAudioClient3_GetCurrentSharedModeEnginePeriod(ma_IAudioClient3* pThis, MA_WAVEFORMATEX** ppFormat, ma_uint32* pCurrentPeriodInFrames) { return pThis->lpVtbl->GetCurrentSharedModeEnginePeriod(pThis, ppFormat, pCurrentPeriodInFrames); }
static MA_INLINE HRESULT ma_IAudioClient3_InitializeSharedAudioStream(ma_IAudioClient3* pThis, DWORD streamFlags, ma_uint32 periodInFrames, const MA_WAVEFORMATEX* pFormat, const GUID* pAudioSessionGUID) { return pThis->lpVtbl->InitializeSharedAudioStream(pThis, streamFlags, periodInFrames, pFormat, pAudioSessionGUID); }


/* IAudioRenderClient */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioRenderClient* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IAudioRenderClient* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IAudioRenderClient* pThis);

    /* IAudioRenderClient */
    HRESULT (STDMETHODCALLTYPE * GetBuffer)    (ma_IAudioRenderClient* pThis, ma_uint32 numFramesRequested, BYTE** ppData);
    HRESULT (STDMETHODCALLTYPE * ReleaseBuffer)(ma_IAudioRenderClient* pThis, ma_uint32 numFramesWritten, DWORD dwFlags);
} ma_IAudioRenderClientVtbl;
struct ma_IAudioRenderClient
{
    ma_IAudioRenderClientVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IAudioRenderClient_QueryInterface(ma_IAudioRenderClient* pThis, const IID* const riid, void** ppObject)   { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IAudioRenderClient_AddRef(ma_IAudioRenderClient* pThis)                                                   { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IAudioRenderClient_Release(ma_IAudioRenderClient* pThis)                                                  { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IAudioRenderClient_GetBuffer(ma_IAudioRenderClient* pThis, ma_uint32 numFramesRequested, BYTE** ppData)   { return pThis->lpVtbl->GetBuffer(pThis, numFramesRequested, ppData); }
static MA_INLINE HRESULT ma_IAudioRenderClient_ReleaseBuffer(ma_IAudioRenderClient* pThis, ma_uint32 numFramesWritten, DWORD dwFlags) { return pThis->lpVtbl->ReleaseBuffer(pThis, numFramesWritten, dwFlags); }


/* IAudioCaptureClient */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IAudioCaptureClient* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IAudioCaptureClient* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IAudioCaptureClient* pThis);

    /* IAudioRenderClient */
    HRESULT (STDMETHODCALLTYPE * GetBuffer)        (ma_IAudioCaptureClient* pThis, BYTE** ppData, ma_uint32* pNumFramesToRead, DWORD* pFlags, ma_uint64* pDevicePosition, ma_uint64* pQPCPosition);
    HRESULT (STDMETHODCALLTYPE * ReleaseBuffer)    (ma_IAudioCaptureClient* pThis, ma_uint32 numFramesRead);
    HRESULT (STDMETHODCALLTYPE * GetNextPacketSize)(ma_IAudioCaptureClient* pThis, ma_uint32* pNumFramesInNextPacket);
} ma_IAudioCaptureClientVtbl;
struct ma_IAudioCaptureClient
{
    ma_IAudioCaptureClientVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IAudioCaptureClient_QueryInterface(ma_IAudioCaptureClient* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IAudioCaptureClient_AddRef(ma_IAudioCaptureClient* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IAudioCaptureClient_Release(ma_IAudioCaptureClient* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IAudioCaptureClient_GetBuffer(ma_IAudioCaptureClient* pThis, BYTE** ppData, ma_uint32* pNumFramesToRead, DWORD* pFlags, ma_uint64* pDevicePosition, ma_uint64* pQPCPosition) { return pThis->lpVtbl->GetBuffer(pThis, ppData, pNumFramesToRead, pFlags, pDevicePosition, pQPCPosition); }
static MA_INLINE HRESULT ma_IAudioCaptureClient_ReleaseBuffer(ma_IAudioCaptureClient* pThis, ma_uint32 numFramesRead)                 { return pThis->lpVtbl->ReleaseBuffer(pThis, numFramesRead); }
static MA_INLINE HRESULT ma_IAudioCaptureClient_GetNextPacketSize(ma_IAudioCaptureClient* pThis, ma_uint32* pNumFramesInNextPacket)   { return pThis->lpVtbl->GetNextPacketSize(pThis, pNumFramesInNextPacket); }

#if defined(MA_WIN32_UWP)
/* mmdevapi Functions */
typedef HRESULT (WINAPI * MA_PFN_ActivateAudioInterfaceAsync)(const wchar_t* deviceInterfacePath, const IID* riid, MA_PROPVARIANT* activationParams, ma_IActivateAudioInterfaceCompletionHandler* completionHandler, ma_IActivateAudioInterfaceAsyncOperation** activationOperation);
#endif

/* Avrt Functions */
typedef HANDLE (WINAPI * MA_PFN_AvSetMmThreadCharacteristicsA)(const char* TaskName, DWORD* TaskIndex);
typedef BOOL   (WINAPI * MA_PFN_AvRevertMmThreadCharacteristics)(HANDLE AvrtHandle);

#if !defined(MA_WIN32_DESKTOP) && !defined(MA_WIN32_GDK)
typedef struct ma_completion_handler_uwp ma_completion_handler_uwp;

typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_completion_handler_uwp* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_completion_handler_uwp* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_completion_handler_uwp* pThis);

    /* IActivateAudioInterfaceCompletionHandler */
    HRESULT (STDMETHODCALLTYPE * ActivateCompleted)(ma_completion_handler_uwp* pThis, ma_IActivateAudioInterfaceAsyncOperation* pActivateOperation);
} ma_completion_handler_uwp_vtbl;
struct ma_completion_handler_uwp
{
    ma_completion_handler_uwp_vtbl* lpVtbl;
    MA_ATOMIC(4, ma_uint32) counter;
    HANDLE hEvent;
};

static HRESULT STDMETHODCALLTYPE ma_completion_handler_uwp_QueryInterface(ma_completion_handler_uwp* pThis, const IID* const riid, void** ppObject)
{
    /*
    We need to "implement" IAgileObject which is just an indicator that's used internally by WASAPI for some multithreading management. To
    "implement" this, we just make sure we return pThis when the IAgileObject is requested.
    */
    if (!ma_is_guid_equal(riid, &MA_IID_IUnknown) && !ma_is_guid_equal(riid, &MA_IID_IActivateAudioInterfaceCompletionHandler) && !ma_is_guid_equal(riid, &MA_IID_IAgileObject)) {
        *ppObject = NULL;
        return E_NOINTERFACE;
    }

    /* Getting here means the IID is IUnknown or IMMNotificationClient. */
    *ppObject = (void*)pThis;
    ((ma_completion_handler_uwp_vtbl*)pThis->lpVtbl)->AddRef(pThis);
    return S_OK;
}

static ULONG STDMETHODCALLTYPE ma_completion_handler_uwp_AddRef(ma_completion_handler_uwp* pThis)
{
    return (ULONG)ma_atomic_fetch_add_32(&pThis->counter, 1) + 1;
}

static ULONG STDMETHODCALLTYPE ma_completion_handler_uwp_Release(ma_completion_handler_uwp* pThis)
{
    ma_uint32 newRefCount = ma_atomic_fetch_sub_32(&pThis->counter, 1) - 1;
    if (newRefCount == 0) {
        return 0;   /* We don't free anything here because we never allocate the object on the heap. */
    }

    return (ULONG)newRefCount;
}

static HRESULT STDMETHODCALLTYPE ma_completion_handler_uwp_ActivateCompleted(ma_completion_handler_uwp* pThis, ma_IActivateAudioInterfaceAsyncOperation* pActivateOperation)
{
    (void)pActivateOperation;
    SetEvent(pThis->hEvent);
    return S_OK;
}


static ma_completion_handler_uwp_vtbl g_maCompletionHandlerVtblInstance = {
    ma_completion_handler_uwp_QueryInterface,
    ma_completion_handler_uwp_AddRef,
    ma_completion_handler_uwp_Release,
    ma_completion_handler_uwp_ActivateCompleted
};

static ma_result ma_completion_handler_uwp_init(ma_completion_handler_uwp* pHandler)
{
    MA_ASSERT(pHandler != NULL);
    MA_ZERO_OBJECT(pHandler);

    pHandler->lpVtbl = &g_maCompletionHandlerVtblInstance;
    pHandler->counter = 1;
    pHandler->hEvent = CreateEventA(NULL, FALSE, FALSE, NULL);
    if (pHandler->hEvent == NULL) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}

static void ma_completion_handler_uwp_uninit(ma_completion_handler_uwp* pHandler)
{
    if (pHandler->hEvent != NULL) {
        CloseHandle(pHandler->hEvent);
    }
}

static void ma_completion_handler_uwp_wait(ma_completion_handler_uwp* pHandler)
{
    WaitForSingleObject((HANDLE)pHandler->hEvent, INFINITE);
}
#endif  /* !MA_WIN32_DESKTOP */

/* We need a virtual table for our notification client object that's used for detecting changes to the default device. */
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_QueryInterface(ma_IMMNotificationClient* pThis, const IID* const riid, void** ppObject)
{
    /*
    We care about two interfaces - IUnknown and IMMNotificationClient. If the requested IID is something else
    we just return E_NOINTERFACE. Otherwise we need to increment the reference counter and return S_OK.
    */
    if (!ma_is_guid_equal(riid, &MA_IID_IUnknown) && !ma_is_guid_equal(riid, &MA_IID_IMMNotificationClient)) {
        *ppObject = NULL;
        return E_NOINTERFACE;
    }

    /* Getting here means the IID is IUnknown or IMMNotificationClient. */
    *ppObject = (void*)pThis;
    ((ma_IMMNotificationClientVtbl*)pThis->lpVtbl)->AddRef(pThis);
    return S_OK;
}

static ULONG STDMETHODCALLTYPE ma_IMMNotificationClient_AddRef(ma_IMMNotificationClient* pThis)
{
    return (ULONG)ma_atomic_fetch_add_32(&pThis->counter, 1) + 1;
}

static ULONG STDMETHODCALLTYPE ma_IMMNotificationClient_Release(ma_IMMNotificationClient* pThis)
{
    ma_uint32 newRefCount = ma_atomic_fetch_sub_32(&pThis->counter, 1) - 1;
    if (newRefCount == 0) {
        return 0;   /* We don't free anything here because we never allocate the object on the heap. */
    }

    return (ULONG)newRefCount;
}

static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDeviceStateChanged(ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID, DWORD dwNewState)
{
    ma_bool32 isThisDevice = MA_FALSE;
    ma_bool32 isCapture    = MA_FALSE;
    ma_bool32 isPlayback   = MA_FALSE;

#ifdef MA_DEBUG_OUTPUT
    /*ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "IMMNotificationClient_OnDeviceStateChanged(pDeviceID=%S, dwNewState=%u)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)", (unsigned int)dwNewState);*/
#endif

    /*
    There have been reports of a hang when a playback device is disconnected. The idea with this code is to explicitly stop the device if we detect
    that the device is disabled or has been unplugged.
    */
    if (pThis->pDevice->wasapi.allowCaptureAutoStreamRouting && (pThis->pDevice->type == ma_device_type_capture || pThis->pDevice->type == ma_device_type_duplex || pThis->pDevice->type == ma_device_type_loopback)) {
        isCapture = MA_TRUE;
        if (ma_strcmp_WCHAR(pThis->pDevice->capture.id.wasapi, pDeviceID) == 0) {
            isThisDevice = MA_TRUE;
        }
    }

    if (pThis->pDevice->wasapi.allowPlaybackAutoStreamRouting && (pThis->pDevice->type == ma_device_type_playback || pThis->pDevice->type == ma_device_type_duplex)) {
        isPlayback = MA_TRUE;
        if (ma_strcmp_WCHAR(pThis->pDevice->playback.id.wasapi, pDeviceID) == 0) {
            isThisDevice = MA_TRUE;
        }
    }


    /*
    If the device ID matches our device we need to mark our device as detached and stop it. When a
    device is added in OnDeviceAdded(), we'll restart it. We only mark it as detached if the device
    was started at the time of being removed.
    */
    if (isThisDevice) {
        if ((dwNewState & MA_MM_DEVICE_STATE_ACTIVE) == 0) {
            /*
            Unplugged or otherwise unavailable. Mark as detached if we were in a playing state. We'll
            use this to determine whether or not we need to automatically start the device when it's
            plugged back in again.
            */
            if (ma_device_get_state(pThis->pDevice) == ma_device_state_started) {
                if (isPlayback) {
                    pThis->pDevice->wasapi.isDetachedPlayback = MA_TRUE;
                }
                if (isCapture) {
                    pThis->pDevice->wasapi.isDetachedCapture = MA_TRUE;
                }

                ma_device_stop(pThis->pDevice);
            }
        }

        if ((dwNewState & MA_MM_DEVICE_STATE_ACTIVE) != 0) {
            /* The device was activated. If we were detached, we need to start it again. */
            ma_bool8 tryRestartingDevice = MA_FALSE;

            if (isPlayback) {
                if (pThis->pDevice->wasapi.isDetachedPlayback) {
                    pThis->pDevice->wasapi.isDetachedPlayback = MA_FALSE;
                    ma_device_reroute__wasapi(pThis->pDevice, ma_device_type_playback);
                    tryRestartingDevice = MA_TRUE;
                }
            }

            if (isCapture) {
                if (pThis->pDevice->wasapi.isDetachedCapture) {
                    pThis->pDevice->wasapi.isDetachedCapture = MA_FALSE;
                    ma_device_reroute__wasapi(pThis->pDevice, (pThis->pDevice->type == ma_device_type_loopback) ? ma_device_type_loopback : ma_device_type_capture);
                    tryRestartingDevice = MA_TRUE;
                }
            }

            if (tryRestartingDevice) {
                if (pThis->pDevice->wasapi.isDetachedPlayback == MA_FALSE && pThis->pDevice->wasapi.isDetachedCapture == MA_FALSE) {
                    ma_device_start(pThis->pDevice);
                }
            }
        }
    }

    return S_OK;
}

static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDeviceAdded(ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID)
{
#ifdef MA_DEBUG_OUTPUT
    /*ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "IMMNotificationClient_OnDeviceAdded(pDeviceID=%S)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)");*/
#endif

    /* We don't need to worry about this event for our purposes. */
    (void)pThis;
    (void)pDeviceID;
    return S_OK;
}

static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDeviceRemoved(ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID)
{
#ifdef MA_DEBUG_OUTPUT
    /*ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "IMMNotificationClient_OnDeviceRemoved(pDeviceID=%S)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)");*/
#endif

    /* We don't need to worry about this event for our purposes. */
    (void)pThis;
    (void)pDeviceID;
    return S_OK;
}

static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnDefaultDeviceChanged(ma_IMMNotificationClient* pThis, ma_EDataFlow dataFlow, ma_ERole role, const WCHAR* pDefaultDeviceID)
{
#ifdef MA_DEBUG_OUTPUT
    /*ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "IMMNotificationClient_OnDefaultDeviceChanged(dataFlow=%d, role=%d, pDefaultDeviceID=%S)\n", dataFlow, role, (pDefaultDeviceID != NULL) ? pDefaultDeviceID : L"(NULL)");*/
#endif

    (void)role;

    /* We only care about devices with the same data flow as the current device. */
    if ((pThis->pDevice->type == ma_device_type_playback && dataFlow != ma_eRender)  ||
        (pThis->pDevice->type == ma_device_type_capture  && dataFlow != ma_eCapture) ||
        (pThis->pDevice->type == ma_device_type_loopback && dataFlow != ma_eRender)) {
        ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Stream rerouting abandoned because dataFlow does match device type.\n");
        return S_OK;
    }

    /* We need to consider dataFlow as ma_eCapture if device is ma_device_type_loopback */
    if (pThis->pDevice->type == ma_device_type_loopback) {
        dataFlow = ma_eCapture;
    }

    /* Don't do automatic stream routing if we're not allowed. */
    if ((dataFlow == ma_eRender  && pThis->pDevice->wasapi.allowPlaybackAutoStreamRouting == MA_FALSE) ||
        (dataFlow == ma_eCapture && pThis->pDevice->wasapi.allowCaptureAutoStreamRouting  == MA_FALSE)) {
        ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Stream rerouting abandoned because automatic stream routing has been disabled by the device config.\n");
        return S_OK;
    }

    /*
    Not currently supporting automatic stream routing in exclusive mode. This is not working correctly on my machine due to
    AUDCLNT_E_DEVICE_IN_USE errors when reinitializing the device. If this is a bug in miniaudio, we can try re-enabling this once
    it's fixed.
    */
    if ((dataFlow == ma_eRender  && pThis->pDevice->playback.shareMode == ma_share_mode_exclusive) ||
        (dataFlow == ma_eCapture && pThis->pDevice->capture.shareMode  == ma_share_mode_exclusive)) {
        ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Stream rerouting abandoned because the device shared mode is exclusive.\n");
        return S_OK;
    }



    /*
    Second attempt at device rerouting. We're going to retrieve the device's state at the time of
    the route change. We're then going to stop the device, reinitialize the device, and then start
    it again if the state before stopping was ma_device_state_started.
    */
    {
        ma_uint32 previousState = ma_device_get_state(pThis->pDevice);
        ma_bool8 restartDevice = MA_FALSE;

        if (previousState == ma_device_state_uninitialized || previousState == ma_device_state_starting) {
            ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Stream rerouting abandoned because the device is in the process of starting.\n");
            return S_OK;
        }

        if (previousState == ma_device_state_started) {
            ma_device_stop(pThis->pDevice);
            restartDevice = MA_TRUE;
        }

        if (pDefaultDeviceID != NULL) { /* <-- The input device ID will be null if there's no other device available. */
            ma_mutex_lock(&pThis->pDevice->wasapi.rerouteLock);
            {
                if (dataFlow == ma_eRender) {
                    ma_device_reroute__wasapi(pThis->pDevice, ma_device_type_playback);

                    if (pThis->pDevice->wasapi.isDetachedPlayback) {
                        pThis->pDevice->wasapi.isDetachedPlayback = MA_FALSE;

                        if (pThis->pDevice->type == ma_device_type_duplex && pThis->pDevice->wasapi.isDetachedCapture) {
                            restartDevice = MA_FALSE;   /* It's a duplex device and the capture side is detached. We cannot be restarting the device just yet. */
                        }
                        else {
                            restartDevice = MA_TRUE;    /* It's not a duplex device, or the capture side is also attached so we can go ahead and restart the device. */
                        }
                    }
                }
                else {
                    ma_device_reroute__wasapi(pThis->pDevice, (pThis->pDevice->type == ma_device_type_loopback) ? ma_device_type_loopback : ma_device_type_capture);

                    if (pThis->pDevice->wasapi.isDetachedCapture) {
                        pThis->pDevice->wasapi.isDetachedCapture = MA_FALSE;

                        if (pThis->pDevice->type == ma_device_type_duplex && pThis->pDevice->wasapi.isDetachedPlayback) {
                            restartDevice = MA_FALSE;   /* It's a duplex device and the playback side is detached. We cannot be restarting the device just yet. */
                        }
                        else {
                            restartDevice = MA_TRUE;    /* It's not a duplex device, or the playback side is also attached so we can go ahead and restart the device. */
                        }
                    }
                }
            }
            ma_mutex_unlock(&pThis->pDevice->wasapi.rerouteLock);

            if (restartDevice) {
                ma_device_start(pThis->pDevice);
            }
        }
    }

    return S_OK;
}

static HRESULT STDMETHODCALLTYPE ma_IMMNotificationClient_OnPropertyValueChanged(ma_IMMNotificationClient* pThis, const WCHAR* pDeviceID, const PROPERTYKEY key)
{
#ifdef MA_DEBUG_OUTPUT
    /*ma_log_postf(ma_device_get_log(pThis->pDevice), MA_LOG_LEVEL_DEBUG, "IMMNotificationClient_OnPropertyValueChanged(pDeviceID=%S)\n", (pDeviceID != NULL) ? pDeviceID : L"(NULL)");*/
#endif

    (void)pThis;
    (void)pDeviceID;
    (void)key;
    return S_OK;
}

static ma_IMMNotificationClientVtbl g_maNotificationCientVtbl = {
    ma_IMMNotificationClient_QueryInterface,
    ma_IMMNotificationClient_AddRef,
    ma_IMMNotificationClient_Release,
    ma_IMMNotificationClient_OnDeviceStateChanged,
    ma_IMMNotificationClient_OnDeviceAdded,
    ma_IMMNotificationClient_OnDeviceRemoved,
    ma_IMMNotificationClient_OnDefaultDeviceChanged,
    ma_IMMNotificationClient_OnPropertyValueChanged
};
#endif  /* MA_WIN32_DESKTOP */

static const char* ma_to_usage_string__wasapi(ma_wasapi_usage usage)
{
    switch (usage)
    {
        case ma_wasapi_usage_default:   return NULL;
        case ma_wasapi_usage_games:     return "Games";
        case ma_wasapi_usage_pro_audio: return "Pro Audio";
        default: break;
    }

    return NULL;
}

#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
typedef ma_IMMDevice ma_WASAPIDeviceInterface;
#else
typedef ma_IUnknown ma_WASAPIDeviceInterface;
#endif


#define MA_CONTEXT_COMMAND_QUIT__WASAPI                 1
#define MA_CONTEXT_COMMAND_CREATE_IAUDIOCLIENT__WASAPI  2
#define MA_CONTEXT_COMMAND_RELEASE_IAUDIOCLIENT__WASAPI 3

static ma_context_command__wasapi ma_context_init_command__wasapi(int code)
{
    ma_context_command__wasapi cmd;

    MA_ZERO_OBJECT(&cmd);
    cmd.code = code;

    return cmd;
}

static ma_result ma_context_post_command__wasapi(ma_context* pContext, const ma_context_command__wasapi* pCmd)
{
    /* For now we are doing everything synchronously, but I might relax this later if the need arises. */
    ma_result result;
    ma_bool32 isUsingLocalEvent = MA_FALSE;
    ma_event localEvent;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pCmd     != NULL);

    if (pCmd->pEvent == NULL) {
        isUsingLocalEvent = MA_TRUE;

        result = ma_event_init(&localEvent);
        if (result != MA_SUCCESS) {
            return result;  /* Failed to create the event for this command. */
        }
    }

    /* Here is where we add the command to the list. If there's not enough room we'll spin until there is. */
    ma_mutex_lock(&pContext->wasapi.commandLock);
    {
        ma_uint32 index;

        /* Spin until we've got some space available. */
        while (pContext->wasapi.commandCount == ma_countof(pContext->wasapi.commands)) {
            ma_yield();
        }

        /* Space is now available. Can safely add to the list. */
        index = (pContext->wasapi.commandIndex + pContext->wasapi.commandCount) % ma_countof(pContext->wasapi.commands);
        pContext->wasapi.commands[index]        = *pCmd;
        pContext->wasapi.commands[index].pEvent = &localEvent;
        pContext->wasapi.commandCount += 1;

        /* Now that the command has been added, release the semaphore so ma_context_next_command__wasapi() can return. */
        ma_semaphore_release(&pContext->wasapi.commandSem);
    }
    ma_mutex_unlock(&pContext->wasapi.commandLock);

    if (isUsingLocalEvent) {
        ma_event_wait(&localEvent);
        ma_event_uninit(&localEvent);
    }

    return MA_SUCCESS;
}

static ma_result ma_context_next_command__wasapi(ma_context* pContext, ma_context_command__wasapi* pCmd)
{
    ma_result result = MA_SUCCESS;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pCmd     != NULL);

    result = ma_semaphore_wait(&pContext->wasapi.commandSem);
    if (result == MA_SUCCESS) {
        ma_mutex_lock(&pContext->wasapi.commandLock);
        {
            *pCmd = pContext->wasapi.commands[pContext->wasapi.commandIndex];
            pContext->wasapi.commandIndex  = (pContext->wasapi.commandIndex + 1) % ma_countof(pContext->wasapi.commands);
            pContext->wasapi.commandCount -= 1;
        }
        ma_mutex_unlock(&pContext->wasapi.commandLock);
    }

    return result;
}

static ma_thread_result MA_THREADCALL ma_context_command_thread__wasapi(void* pUserData)
{
    ma_result result;
    ma_context* pContext = (ma_context*)pUserData;
    MA_ASSERT(pContext != NULL);

    for (;;) {
        ma_context_command__wasapi cmd;
        result = ma_context_next_command__wasapi(pContext, &cmd);
        if (result != MA_SUCCESS) {
            break;
        }

        switch (cmd.code)
        {
            case MA_CONTEXT_COMMAND_QUIT__WASAPI:
            {
                /* Do nothing. Handled after the switch. */
            } break;

            case MA_CONTEXT_COMMAND_CREATE_IAUDIOCLIENT__WASAPI:
            {
                if (cmd.data.createAudioClient.deviceType == ma_device_type_playback) {
                    *cmd.data.createAudioClient.pResult = ma_result_from_HRESULT(ma_IAudioClient_GetService((ma_IAudioClient*)cmd.data.createAudioClient.pAudioClient, &MA_IID_IAudioRenderClient, cmd.data.createAudioClient.ppAudioClientService));
                } else {
                    *cmd.data.createAudioClient.pResult = ma_result_from_HRESULT(ma_IAudioClient_GetService((ma_IAudioClient*)cmd.data.createAudioClient.pAudioClient, &MA_IID_IAudioCaptureClient, cmd.data.createAudioClient.ppAudioClientService));
                }
            } break;

            case MA_CONTEXT_COMMAND_RELEASE_IAUDIOCLIENT__WASAPI:
            {
                if (cmd.data.releaseAudioClient.deviceType == ma_device_type_playback) {
                    if (cmd.data.releaseAudioClient.pDevice->wasapi.pAudioClientPlayback != NULL) {
                        ma_IAudioClient_Release((ma_IAudioClient*)cmd.data.releaseAudioClient.pDevice->wasapi.pAudioClientPlayback);
                        cmd.data.releaseAudioClient.pDevice->wasapi.pAudioClientPlayback = NULL;
                    }
                }

                if (cmd.data.releaseAudioClient.deviceType == ma_device_type_capture) {
                    if (cmd.data.releaseAudioClient.pDevice->wasapi.pAudioClientCapture != NULL) {
                        ma_IAudioClient_Release((ma_IAudioClient*)cmd.data.releaseAudioClient.pDevice->wasapi.pAudioClientCapture);
                        cmd.data.releaseAudioClient.pDevice->wasapi.pAudioClientCapture = NULL;
                    }
                }
            } break;

            default:
            {
                /* Unknown command. Ignore it, but trigger an assert in debug mode so we're aware of it. */
                MA_ASSERT(MA_FALSE);
            } break;
        }

        if (cmd.pEvent != NULL) {
            ma_event_signal(cmd.pEvent);
        }

        if (cmd.code == MA_CONTEXT_COMMAND_QUIT__WASAPI) {
            break;  /* Received a quit message. Get out of here. */
        }
    }

    return (ma_thread_result)0;
}

static ma_result ma_device_create_IAudioClient_service__wasapi(ma_context* pContext, ma_device_type deviceType, ma_IAudioClient* pAudioClient, void** ppAudioClientService)
{
    ma_result result;
    ma_result cmdResult;
    ma_context_command__wasapi cmd = ma_context_init_command__wasapi(MA_CONTEXT_COMMAND_CREATE_IAUDIOCLIENT__WASAPI);
    cmd.data.createAudioClient.deviceType           = deviceType;
    cmd.data.createAudioClient.pAudioClient         = (void*)pAudioClient;
    cmd.data.createAudioClient.ppAudioClientService = ppAudioClientService;
    cmd.data.createAudioClient.pResult              = &cmdResult;   /* Declared locally, but won't be dereferenced after this function returns since execution of the command will wait here. */

    result = ma_context_post_command__wasapi(pContext, &cmd);  /* This will not return until the command has actually been run. */
    if (result != MA_SUCCESS) {
        return result;
    }

    return *cmd.data.createAudioClient.pResult;
}

#if 0   /* Not used at the moment, but leaving here for future use. */
static ma_result ma_device_release_IAudioClient_service__wasapi(ma_device* pDevice, ma_device_type deviceType)
{
    ma_result result;
    ma_context_command__wasapi cmd = ma_context_init_command__wasapi(MA_CONTEXT_COMMAND_RELEASE_IAUDIOCLIENT__WASAPI);
    cmd.data.releaseAudioClient.pDevice    = pDevice;
    cmd.data.releaseAudioClient.deviceType = deviceType;

    result = ma_context_post_command__wasapi(pDevice->pContext, &cmd);  /* This will not return until the command has actually been run. */
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}
#endif


static void ma_add_native_data_format_to_device_info_from_WAVEFORMATEX(const MA_WAVEFORMATEX* pWF, ma_share_mode shareMode, ma_device_info* pInfo)
{
    MA_ASSERT(pWF != NULL);
    MA_ASSERT(pInfo != NULL);

    if (pInfo->nativeDataFormatCount >= ma_countof(pInfo->nativeDataFormats)) {
        return; /* Too many data formats. Need to ignore this one. Don't think this should ever happen with WASAPI. */
    }

    pInfo->nativeDataFormats[pInfo->nativeDataFormatCount].format     = ma_format_from_WAVEFORMATEX(pWF);
    pInfo->nativeDataFormats[pInfo->nativeDataFormatCount].channels   = pWF->nChannels;
    pInfo->nativeDataFormats[pInfo->nativeDataFormatCount].sampleRate = pWF->nSamplesPerSec;
    pInfo->nativeDataFormats[pInfo->nativeDataFormatCount].flags      = (shareMode == ma_share_mode_exclusive) ? MA_DATA_FORMAT_FLAG_EXCLUSIVE_MODE : 0;
    pInfo->nativeDataFormatCount += 1;
}

static ma_result ma_context_get_device_info_from_IAudioClient__wasapi(ma_context* pContext, /*ma_IMMDevice**/void* pMMDevice, ma_IAudioClient* pAudioClient, ma_device_info* pInfo)
{
    HRESULT hr;
    MA_WAVEFORMATEX* pWF = NULL;

    MA_ASSERT(pAudioClient != NULL);
    MA_ASSERT(pInfo != NULL);

    /* Shared Mode. We use GetMixFormat() here. */
    hr = ma_IAudioClient_GetMixFormat((ma_IAudioClient*)pAudioClient, (MA_WAVEFORMATEX**)&pWF);
    if (SUCCEEDED(hr)) {
        ma_add_native_data_format_to_device_info_from_WAVEFORMATEX(pWF, ma_share_mode_shared, pInfo);
    } else {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to retrieve mix format for device info retrieval.");
        return ma_result_from_HRESULT(hr);
    }

    /*
    Exclusive Mode. We repeatedly call IsFormatSupported() here. This is not currently supported on
    UWP. Failure to retrieve the exclusive mode format is not considered an error, so from here on
    out, MA_SUCCESS is guaranteed to be returned.
    */
    #if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    {
        ma_IPropertyStore *pProperties;

        /*
        The first thing to do is get the format from PKEY_AudioEngine_DeviceFormat. This should give us a channel count we assume is
        correct which will simplify our searching.
        */
        hr = ma_IMMDevice_OpenPropertyStore((ma_IMMDevice*)pMMDevice, STGM_READ, &pProperties);
        if (SUCCEEDED(hr)) {
            MA_PROPVARIANT var;
            ma_PropVariantInit(&var);

            hr = ma_IPropertyStore_GetValue(pProperties, &MA_PKEY_AudioEngine_DeviceFormat, &var);
            if (SUCCEEDED(hr)) {
                pWF = (MA_WAVEFORMATEX*)var.blob.pBlobData;

                /*
                In my testing, the format returned by PKEY_AudioEngine_DeviceFormat is suitable for exclusive mode so we check this format
                first. If this fails, fall back to a search.
                */
                hr = ma_IAudioClient_IsFormatSupported((ma_IAudioClient*)pAudioClient, MA_AUDCLNT_SHAREMODE_EXCLUSIVE, pWF, NULL);
                if (SUCCEEDED(hr)) {
                    /* The format returned by PKEY_AudioEngine_DeviceFormat is supported. */
                    ma_add_native_data_format_to_device_info_from_WAVEFORMATEX(pWF, ma_share_mode_exclusive, pInfo);
                } else {
                    /*
                    The format returned by PKEY_AudioEngine_DeviceFormat is not supported, so fall back to a search. We assume the channel
                    count returned by MA_PKEY_AudioEngine_DeviceFormat is valid and correct. For simplicity we're only returning one format.
                    */
                    ma_uint32 channels = pWF->nChannels;
                    ma_channel defaultChannelMap[MA_MAX_CHANNELS];
                    MA_WAVEFORMATEXTENSIBLE wf;
                    ma_bool32 found;
                    ma_uint32 iFormat;

                    /* Make sure we don't overflow the channel map. */
                    if (channels > MA_MAX_CHANNELS) {
                        channels = MA_MAX_CHANNELS;
                    }

                    ma_channel_map_init_standard(ma_standard_channel_map_microsoft, defaultChannelMap, ma_countof(defaultChannelMap), channels);

                    MA_ZERO_OBJECT(&wf);
                    wf.cbSize     = sizeof(wf);
                    wf.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
                    wf.nChannels  = (WORD)channels;
                    wf.dwChannelMask     = ma_channel_map_to_channel_mask__win32(defaultChannelMap, channels);

                    found = MA_FALSE;
                    for (iFormat = 0; iFormat < ma_countof(g_maFormatPriorities); ++iFormat) {
                        ma_format format = g_maFormatPriorities[iFormat];
                        ma_uint32 iSampleRate;

                        wf.wBitsPerSample       = (WORD)(ma_get_bytes_per_sample(format)*8);
                        wf.nBlockAlign          = (WORD)(wf.nChannels * wf.wBitsPerSample / 8);
                        wf.nAvgBytesPerSec      = wf.nBlockAlign * wf.nSamplesPerSec;
                        wf.Samples.wValidBitsPerSample = /*(format == ma_format_s24_32) ? 24 :*/ wf.wBitsPerSample;
                        if (format == ma_format_f32) {
                            wf.SubFormat = MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
                        } else {
                            wf.SubFormat = MA_GUID_KSDATAFORMAT_SUBTYPE_PCM;
                        }

                        for (iSampleRate = 0; iSampleRate < ma_countof(g_maStandardSampleRatePriorities); ++iSampleRate) {
                            wf.nSamplesPerSec = g_maStandardSampleRatePriorities[iSampleRate];

                            hr = ma_IAudioClient_IsFormatSupported((ma_IAudioClient*)pAudioClient, MA_AUDCLNT_SHAREMODE_EXCLUSIVE, (MA_WAVEFORMATEX*)&wf, NULL);
                            if (SUCCEEDED(hr)) {
                                ma_add_native_data_format_to_device_info_from_WAVEFORMATEX((MA_WAVEFORMATEX*)&wf, ma_share_mode_exclusive, pInfo);
                                found = MA_TRUE;
                                break;
                            }
                        }

                        if (found) {
                            break;
                        }
                    }

                    ma_PropVariantClear(pContext, &var);

                    if (!found) {
                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "[WASAPI] Failed to find suitable device format for device info retrieval.");
                    }
                }
            } else {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "[WASAPI] Failed to retrieve device format for device info retrieval.");
            }

            ma_IPropertyStore_Release(pProperties);
        } else {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "[WASAPI] Failed to open property store for device info retrieval.");
        }
    }
    #else
    {
        (void)pMMDevice;    /* Unused. */
    }
    #endif

    return MA_SUCCESS;
}

#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
static ma_EDataFlow ma_device_type_to_EDataFlow(ma_device_type deviceType)
{
    if (deviceType == ma_device_type_playback) {
        return ma_eRender;
    } else if (deviceType == ma_device_type_capture) {
        return ma_eCapture;
    } else {
        MA_ASSERT(MA_FALSE);
        return ma_eRender; /* Should never hit this. */
    }
}

static ma_result ma_context_create_IMMDeviceEnumerator__wasapi(ma_context* pContext, ma_IMMDeviceEnumerator** ppDeviceEnumerator)
{
    HRESULT hr;
    ma_IMMDeviceEnumerator* pDeviceEnumerator;

    MA_ASSERT(pContext           != NULL);
    MA_ASSERT(ppDeviceEnumerator != NULL);

    *ppDeviceEnumerator = NULL; /* Safety. */

    hr = ma_CoCreateInstance(pContext, &MA_CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &MA_IID_IMMDeviceEnumerator, (void**)&pDeviceEnumerator);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create device enumerator.");
        return ma_result_from_HRESULT(hr);
    }

    *ppDeviceEnumerator = pDeviceEnumerator;

    return MA_SUCCESS;
}

static WCHAR* ma_context_get_default_device_id_from_IMMDeviceEnumerator__wasapi(ma_context* pContext, ma_IMMDeviceEnumerator* pDeviceEnumerator, ma_device_type deviceType)
{
    HRESULT hr;
    ma_IMMDevice* pMMDefaultDevice = NULL;
    WCHAR* pDefaultDeviceID = NULL;
    ma_EDataFlow dataFlow;
    ma_ERole role;

    MA_ASSERT(pContext          != NULL);
    MA_ASSERT(pDeviceEnumerator != NULL);

    (void)pContext;

    /* Grab the EDataFlow type from the device type. */
    dataFlow = ma_device_type_to_EDataFlow(deviceType);

    /* The role is always eConsole, but we may make this configurable later. */
    role = ma_eConsole;

    hr = ma_IMMDeviceEnumerator_GetDefaultAudioEndpoint(pDeviceEnumerator, dataFlow, role, &pMMDefaultDevice);
    if (FAILED(hr)) {
        return NULL;
    }

    hr = ma_IMMDevice_GetId(pMMDefaultDevice, &pDefaultDeviceID);

    ma_IMMDevice_Release(pMMDefaultDevice);
    pMMDefaultDevice = NULL;

    if (FAILED(hr)) {
        return NULL;
    }

    return pDefaultDeviceID;
}

static WCHAR* ma_context_get_default_device_id__wasapi(ma_context* pContext, ma_device_type deviceType)    /* Free the returned pointer with ma_CoTaskMemFree() */
{
    ma_result result;
    ma_IMMDeviceEnumerator* pDeviceEnumerator;
    WCHAR* pDefaultDeviceID = NULL;

    MA_ASSERT(pContext != NULL);

    result = ma_context_create_IMMDeviceEnumerator__wasapi(pContext, &pDeviceEnumerator);
    if (result != MA_SUCCESS) {
        return NULL;
    }

    pDefaultDeviceID = ma_context_get_default_device_id_from_IMMDeviceEnumerator__wasapi(pContext, pDeviceEnumerator, deviceType);

    ma_IMMDeviceEnumerator_Release(pDeviceEnumerator);
    return pDefaultDeviceID;
}

static ma_result ma_context_get_MMDevice__wasapi(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_IMMDevice** ppMMDevice)
{
    ma_IMMDeviceEnumerator* pDeviceEnumerator;
    HRESULT hr;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppMMDevice != NULL);

    /*
    This weird COM init/uninit here is a hack to work around a crash when changing devices. What is happening is
    WASAPI fires a callback from another thread when the device is changed. It's from that thread where this
    function is getting called. What I'm suspecting is that the other thread is not initializing COM which in turn
    results in CoCreateInstance() failing.

    The community has reported that this seems to fix the crash. There are future plans to move all WASAPI operation
    over to a single thread to make everything safer, but in the meantime while we wait for that to come online I'm
    happy enough to use this hack instead.
    */
    ma_CoInitializeEx(pContext, NULL, MA_COINIT_VALUE);
    {
        hr = ma_CoCreateInstance(pContext, &MA_CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &MA_IID_IMMDeviceEnumerator, (void**)&pDeviceEnumerator);
    }
    ma_CoUninitialize(pContext);

    if (FAILED(hr)) {   /* <-- This is checking the call above to ma_CoCreateInstance(). */
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create IMMDeviceEnumerator.\n");
        return ma_result_from_HRESULT(hr);
    }

    if (pDeviceID == NULL) {
        hr = ma_IMMDeviceEnumerator_GetDefaultAudioEndpoint(pDeviceEnumerator, (deviceType == ma_device_type_capture) ? ma_eCapture : ma_eRender, ma_eConsole, ppMMDevice);
    } else {
        hr = ma_IMMDeviceEnumerator_GetDevice(pDeviceEnumerator, pDeviceID->wasapi, ppMMDevice);
    }

    ma_IMMDeviceEnumerator_Release(pDeviceEnumerator);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to retrieve IMMDevice.\n");
        return ma_result_from_HRESULT(hr);
    }

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_id_from_MMDevice__wasapi(ma_context* pContext, ma_IMMDevice* pMMDevice, ma_device_id* pDeviceID)
{
    WCHAR* pDeviceIDString;
    HRESULT hr;

    MA_ASSERT(pDeviceID != NULL);

    hr = ma_IMMDevice_GetId(pMMDevice, &pDeviceIDString);
    if (SUCCEEDED(hr)) {
        size_t idlen = ma_strlen_WCHAR(pDeviceIDString);
        if (idlen+1 > ma_countof(pDeviceID->wasapi)) {
            ma_CoTaskMemFree(pContext, pDeviceIDString);
            MA_ASSERT(MA_FALSE);  /* NOTE: If this is triggered, please report it. It means the format of the ID must have changed and is too long to fit in our fixed sized buffer. */
            return MA_ERROR;
        }

        MA_COPY_MEMORY(pDeviceID->wasapi, pDeviceIDString, idlen * sizeof(wchar_t));
        pDeviceID->wasapi[idlen] = '\0';

        ma_CoTaskMemFree(pContext, pDeviceIDString);

        return MA_SUCCESS;
    }

    return MA_ERROR;
}

static ma_result ma_context_get_device_info_from_MMDevice__wasapi(ma_context* pContext, ma_IMMDevice* pMMDevice, WCHAR* pDefaultDeviceID, ma_bool32 onlySimpleInfo, ma_device_info* pInfo)
{
    ma_result result;
    HRESULT hr;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pMMDevice != NULL);
    MA_ASSERT(pInfo != NULL);

    /* ID. */
    result = ma_context_get_device_id_from_MMDevice__wasapi(pContext, pMMDevice, &pInfo->id);
    if (result == MA_SUCCESS) {
        if (pDefaultDeviceID != NULL) {
            if (ma_strcmp_WCHAR(pInfo->id.wasapi, pDefaultDeviceID) == 0) {
                pInfo->isDefault = MA_TRUE;
            }
        }
    }

    /* Description / Friendly Name */
    {
        ma_IPropertyStore *pProperties;
        hr = ma_IMMDevice_OpenPropertyStore(pMMDevice, STGM_READ, &pProperties);
        if (SUCCEEDED(hr)) {
            MA_PROPVARIANT var;

            ma_PropVariantInit(&var);
            hr = ma_IPropertyStore_GetValue(pProperties, &MA_PKEY_Device_FriendlyName, &var);
            if (SUCCEEDED(hr)) {
                WideCharToMultiByte(CP_UTF8, 0, var.pwszVal, -1, pInfo->name, sizeof(pInfo->name), 0, FALSE);
                ma_PropVariantClear(pContext, &var);
            }

            ma_IPropertyStore_Release(pProperties);
        }
    }

    /* Format */
    if (!onlySimpleInfo) {
        ma_IAudioClient* pAudioClient;
        hr = ma_IMMDevice_Activate(pMMDevice, &MA_IID_IAudioClient, CLSCTX_ALL, NULL, (void**)&pAudioClient);
        if (SUCCEEDED(hr)) {
            result = ma_context_get_device_info_from_IAudioClient__wasapi(pContext, pMMDevice, pAudioClient, pInfo);

            ma_IAudioClient_Release(pAudioClient);
            return result;
        } else {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to activate audio client for device info retrieval.");
            return ma_result_from_HRESULT(hr);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_context_enumerate_devices_by_type__wasapi(ma_context* pContext, ma_IMMDeviceEnumerator* pDeviceEnumerator, ma_device_type deviceType, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_result result = MA_SUCCESS;
    UINT deviceCount;
    HRESULT hr;
    ma_uint32 iDevice;
    WCHAR* pDefaultDeviceID = NULL;
    ma_IMMDeviceCollection* pDeviceCollection = NULL;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* Grab the default device. We use this to know whether or not flag the returned device info as being the default. */
    pDefaultDeviceID = ma_context_get_default_device_id_from_IMMDeviceEnumerator__wasapi(pContext, pDeviceEnumerator, deviceType);

    /* We need to enumerate the devices which returns a device collection. */
    hr = ma_IMMDeviceEnumerator_EnumAudioEndpoints(pDeviceEnumerator, ma_device_type_to_EDataFlow(deviceType), MA_MM_DEVICE_STATE_ACTIVE, &pDeviceCollection);
    if (SUCCEEDED(hr)) {
        hr = ma_IMMDeviceCollection_GetCount(pDeviceCollection, &deviceCount);
        if (FAILED(hr)) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to get device count.\n");
            result = ma_result_from_HRESULT(hr);
            goto done;
        }

        for (iDevice = 0; iDevice < deviceCount; ++iDevice) {
            ma_device_info deviceInfo;
            ma_IMMDevice* pMMDevice;

            MA_ZERO_OBJECT(&deviceInfo);

            hr = ma_IMMDeviceCollection_Item(pDeviceCollection, iDevice, &pMMDevice);
            if (SUCCEEDED(hr)) {
                result = ma_context_get_device_info_from_MMDevice__wasapi(pContext, pMMDevice, pDefaultDeviceID, MA_TRUE, &deviceInfo);   /* MA_TRUE = onlySimpleInfo. */

                ma_IMMDevice_Release(pMMDevice);
                if (result == MA_SUCCESS) {
                    ma_bool32 cbResult = callback(pContext, deviceType, &deviceInfo, pUserData);
                    if (cbResult == MA_FALSE) {
                        break;
                    }
                }
            }
        }
    }

done:
    if (pDefaultDeviceID != NULL) {
        ma_CoTaskMemFree(pContext, pDefaultDeviceID);
        pDefaultDeviceID = NULL;
    }

    if (pDeviceCollection != NULL) {
        ma_IMMDeviceCollection_Release(pDeviceCollection);
        pDeviceCollection = NULL;
    }

    return result;
}

static ma_result ma_context_get_IAudioClient_Desktop__wasapi(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, MA_PROPVARIANT* pActivationParams, ma_IAudioClient** ppAudioClient, ma_IMMDevice** ppMMDevice)
{
    ma_result result;
    HRESULT hr;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppAudioClient != NULL);
    MA_ASSERT(ppMMDevice != NULL);

    result = ma_context_get_MMDevice__wasapi(pContext, deviceType, pDeviceID, ppMMDevice);
    if (result != MA_SUCCESS) {
        return result;
    }

    hr = ma_IMMDevice_Activate(*ppMMDevice, &MA_IID_IAudioClient, CLSCTX_ALL, pActivationParams, (void**)ppAudioClient);
    if (FAILED(hr)) {
        return ma_result_from_HRESULT(hr);
    }

    return MA_SUCCESS;
}
#else
static ma_result ma_context_get_IAudioClient_UWP__wasapi(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, MA_PROPVARIANT* pActivationParams, ma_IAudioClient** ppAudioClient, ma_IUnknown** ppActivatedInterface)
{
    ma_IActivateAudioInterfaceAsyncOperation *pAsyncOp = NULL;
    ma_completion_handler_uwp completionHandler;
    IID iid;
    WCHAR* iidStr;
    HRESULT hr;
    ma_result result;
    HRESULT activateResult;
    ma_IUnknown* pActivatedInterface;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppAudioClient != NULL);

    if (pDeviceID != NULL) {
        iidStr = (WCHAR*)pDeviceID->wasapi;
    } else {
        if (deviceType == ma_device_type_capture) {
            iid = MA_IID_DEVINTERFACE_AUDIO_CAPTURE;
        } else {
            iid = MA_IID_DEVINTERFACE_AUDIO_RENDER;
        }

    #if defined(__cplusplus)
        hr = StringFromIID(iid, &iidStr);
    #else
        hr = StringFromIID(&iid, &iidStr);
    #endif
        if (FAILED(hr)) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to convert device IID to string for ActivateAudioInterfaceAsync(). Out of memory.\n");
            return ma_result_from_HRESULT(hr);
        }
    }

    result = ma_completion_handler_uwp_init(&completionHandler);
    if (result != MA_SUCCESS) {
        ma_CoTaskMemFree(pContext, iidStr);
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create event for waiting for ActivateAudioInterfaceAsync().\n");
        return result;
    }

    hr = ((MA_PFN_ActivateAudioInterfaceAsync)pContext->wasapi.ActivateAudioInterfaceAsync)(iidStr, &MA_IID_IAudioClient, pActivationParams, (ma_IActivateAudioInterfaceCompletionHandler*)&completionHandler, (ma_IActivateAudioInterfaceAsyncOperation**)&pAsyncOp);
    if (FAILED(hr)) {
        ma_completion_handler_uwp_uninit(&completionHandler);
        ma_CoTaskMemFree(pContext, iidStr);
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] ActivateAudioInterfaceAsync() failed.\n");
        return ma_result_from_HRESULT(hr);
    }

    if (pDeviceID == NULL) {
        ma_CoTaskMemFree(pContext, iidStr);
    }

    /* Wait for the async operation for finish. */
    ma_completion_handler_uwp_wait(&completionHandler);
    ma_completion_handler_uwp_uninit(&completionHandler);

    hr = ma_IActivateAudioInterfaceAsyncOperation_GetActivateResult(pAsyncOp, &activateResult, &pActivatedInterface);
    ma_IActivateAudioInterfaceAsyncOperation_Release(pAsyncOp);

    if (FAILED(hr) || FAILED(activateResult)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to activate device.\n");
        return FAILED(hr) ? ma_result_from_HRESULT(hr) : ma_result_from_HRESULT(activateResult);
    }

    /* Here is where we grab the IAudioClient interface. */
    hr = ma_IUnknown_QueryInterface(pActivatedInterface, &MA_IID_IAudioClient, (void**)ppAudioClient);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to query IAudioClient interface.\n");
        return ma_result_from_HRESULT(hr);
    }

    if (ppActivatedInterface) {
        *ppActivatedInterface = pActivatedInterface;
    } else {
        ma_IUnknown_Release(pActivatedInterface);
    }

    return MA_SUCCESS;
}
#endif


/* https://docs.microsoft.com/en-us/windows/win32/api/audioclientactivationparams/ne-audioclientactivationparams-audioclient_activation_type */
typedef enum
{
    MA_AUDIOCLIENT_ACTIVATION_TYPE_DEFAULT,
    MA_AUDIOCLIENT_ACTIVATION_TYPE_PROCESS_LOOPBACK
} MA_AUDIOCLIENT_ACTIVATION_TYPE;

/* https://docs.microsoft.com/en-us/windows/win32/api/audioclientactivationparams/ne-audioclientactivationparams-process_loopback_mode */
typedef enum
{
    MA_PROCESS_LOOPBACK_MODE_INCLUDE_TARGET_PROCESS_TREE,
    MA_PROCESS_LOOPBACK_MODE_EXCLUDE_TARGET_PROCESS_TREE
} MA_PROCESS_LOOPBACK_MODE;

/* https://docs.microsoft.com/en-us/windows/win32/api/audioclientactivationparams/ns-audioclientactivationparams-audioclient_process_loopback_params */
typedef struct
{
    DWORD TargetProcessId;
    MA_PROCESS_LOOPBACK_MODE ProcessLoopbackMode;
} MA_AUDIOCLIENT_PROCESS_LOOPBACK_PARAMS;

#if defined(_MSC_VER) && !defined(__clang__)
    #pragma warning(push)
    #pragma warning(disable:4201)   /* nonstandard extension used: nameless struct/union */
#elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wpedantic" /* For ISO C99 doesn't support unnamed structs/unions [-Wpedantic] */
    #if defined(__clang__)
        #pragma GCC diagnostic ignored "-Wc11-extensions"   /* anonymous unions are a C11 extension */
    #endif
#endif
/* https://docs.microsoft.com/en-us/windows/win32/api/audioclientactivationparams/ns-audioclientactivationparams-audioclient_activation_params */
typedef struct
{
    MA_AUDIOCLIENT_ACTIVATION_TYPE ActivationType;
    union
    {
        MA_AUDIOCLIENT_PROCESS_LOOPBACK_PARAMS ProcessLoopbackParams;
    };
} MA_AUDIOCLIENT_ACTIVATION_PARAMS;
#if defined(_MSC_VER) && !defined(__clang__)
    #pragma warning(pop)
#elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
    #pragma GCC diagnostic pop
#endif

#define MA_VIRTUAL_AUDIO_DEVICE_PROCESS_LOOPBACK L"VAD\\Process_Loopback"

static ma_result ma_context_get_IAudioClient__wasapi(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_uint32 loopbackProcessID, ma_bool32 loopbackProcessExclude, ma_IAudioClient** ppAudioClient, ma_WASAPIDeviceInterface** ppDeviceInterface)
{
    ma_result result;
    ma_bool32 usingProcessLoopback = MA_FALSE;
    MA_AUDIOCLIENT_ACTIVATION_PARAMS audioclientActivationParams;
    MA_PROPVARIANT activationParams;
    MA_PROPVARIANT* pActivationParams = NULL;
    ma_device_id virtualDeviceID;

    /* Activation parameters specific to loopback mode. Note that process-specific loopback will only work when a default device ID is specified. */
    if (deviceType == ma_device_type_loopback && loopbackProcessID != 0 && pDeviceID == NULL) {
        usingProcessLoopback = MA_TRUE;
    }

    if (usingProcessLoopback) {
        MA_ZERO_OBJECT(&audioclientActivationParams);
        audioclientActivationParams.ActivationType                            = MA_AUDIOCLIENT_ACTIVATION_TYPE_PROCESS_LOOPBACK;
        audioclientActivationParams.ProcessLoopbackParams.ProcessLoopbackMode = (loopbackProcessExclude) ? MA_PROCESS_LOOPBACK_MODE_EXCLUDE_TARGET_PROCESS_TREE : MA_PROCESS_LOOPBACK_MODE_INCLUDE_TARGET_PROCESS_TREE;
        audioclientActivationParams.ProcessLoopbackParams.TargetProcessId     = (DWORD)loopbackProcessID;

        ma_PropVariantInit(&activationParams);
        activationParams.vt             = MA_VT_BLOB;
        activationParams.blob.cbSize    = sizeof(audioclientActivationParams);
        activationParams.blob.pBlobData = (BYTE*)&audioclientActivationParams;
        pActivationParams = &activationParams;

        /* When requesting a specific device ID we need to use a special device ID. */
        MA_COPY_MEMORY(virtualDeviceID.wasapi, MA_VIRTUAL_AUDIO_DEVICE_PROCESS_LOOPBACK, (wcslen(MA_VIRTUAL_AUDIO_DEVICE_PROCESS_LOOPBACK) + 1) * sizeof(wchar_t)); /* +1 for the null terminator. */
        pDeviceID = &virtualDeviceID;
    } else {
        pActivationParams = NULL;   /* No activation parameters required. */
    }

#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    result = ma_context_get_IAudioClient_Desktop__wasapi(pContext, deviceType, pDeviceID, pActivationParams, ppAudioClient, ppDeviceInterface);
#else
    result = ma_context_get_IAudioClient_UWP__wasapi(pContext, deviceType, pDeviceID, pActivationParams, ppAudioClient, ppDeviceInterface);
#endif

    /*
    If loopback mode was requested with a process ID and initialization failed, it could be because it's
    trying to run on an older version of Windows where it's not supported. We need to let the caller
    know about this with a log message.
    */
    if (result != MA_SUCCESS) {
        if (usingProcessLoopback) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Loopback mode requested to %s process ID %u, but initialization failed. Support for this feature begins with Windows 10 Build 20348. Confirm your version of Windows or consider not using process-specific loopback.\n", (loopbackProcessExclude) ? "exclude" : "include", loopbackProcessID);
        }
    }

    return result;
}


static ma_result ma_context_enumerate_devices__wasapi(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    /* Different enumeration for desktop and UWP. */
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    /* Desktop */
    HRESULT hr;
    ma_IMMDeviceEnumerator* pDeviceEnumerator;

    hr = ma_CoCreateInstance(pContext, &MA_CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &MA_IID_IMMDeviceEnumerator, (void**)&pDeviceEnumerator);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create device enumerator.");
        return ma_result_from_HRESULT(hr);
    }

    ma_context_enumerate_devices_by_type__wasapi(pContext, pDeviceEnumerator, ma_device_type_playback, callback, pUserData);
    ma_context_enumerate_devices_by_type__wasapi(pContext, pDeviceEnumerator, ma_device_type_capture,  callback, pUserData);

    ma_IMMDeviceEnumerator_Release(pDeviceEnumerator);
#else
    /*
    UWP

    The MMDevice API is only supported on desktop applications. For now, while I'm still figuring out how to properly enumerate
    over devices without using MMDevice, I'm restricting devices to defaults.

    Hint: DeviceInformation::FindAllAsync() with DeviceClass.AudioCapture/AudioRender. https://blogs.windows.com/buildingapps/2014/05/15/real-time-audio-in-windows-store-and-windows-phone-apps/
    */
    if (callback) {
        ma_bool32 cbResult = MA_TRUE;

        /* Playback. */
        if (cbResult) {
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
            deviceInfo.isDefault = MA_TRUE;
            cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
        }

        /* Capture. */
        if (cbResult) {
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
            deviceInfo.isDefault = MA_TRUE;
            cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
        }
    }
#endif

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__wasapi(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    ma_result result;
    ma_IMMDevice* pMMDevice = NULL;
    WCHAR* pDefaultDeviceID = NULL;

    result = ma_context_get_MMDevice__wasapi(pContext, deviceType, pDeviceID, &pMMDevice);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* We need the default device ID so we can set the isDefault flag in the device info. */
    pDefaultDeviceID = ma_context_get_default_device_id__wasapi(pContext, deviceType);

    result = ma_context_get_device_info_from_MMDevice__wasapi(pContext, pMMDevice, pDefaultDeviceID, MA_FALSE, pDeviceInfo);   /* MA_FALSE = !onlySimpleInfo. */

    if (pDefaultDeviceID != NULL) {
        ma_CoTaskMemFree(pContext, pDefaultDeviceID);
        pDefaultDeviceID = NULL;
    }

    ma_IMMDevice_Release(pMMDevice);

    return result;
#else
    ma_IAudioClient* pAudioClient;
    ma_result result;

    /* UWP currently only uses default devices. */
    if (deviceType == ma_device_type_playback) {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
    } else {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
    }

    result = ma_context_get_IAudioClient_UWP__wasapi(pContext, deviceType, pDeviceID, NULL, &pAudioClient, NULL);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_context_get_device_info_from_IAudioClient__wasapi(pContext, NULL, pAudioClient, pDeviceInfo);

    pDeviceInfo->isDefault = MA_TRUE;  /* UWP only supports default devices. */

    ma_IAudioClient_Release(pAudioClient);
    return result;
#endif
}

static ma_result ma_device_uninit__wasapi(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    #if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    {
        if (pDevice->wasapi.pDeviceEnumerator) {
            ((ma_IMMDeviceEnumerator*)pDevice->wasapi.pDeviceEnumerator)->lpVtbl->UnregisterEndpointNotificationCallback((ma_IMMDeviceEnumerator*)pDevice->wasapi.pDeviceEnumerator, &pDevice->wasapi.notificationClient);
            ma_IMMDeviceEnumerator_Release((ma_IMMDeviceEnumerator*)pDevice->wasapi.pDeviceEnumerator);
        }

        ma_mutex_uninit(&pDevice->wasapi.rerouteLock);
    }
    #endif

    if (pDevice->wasapi.pRenderClient) {
        if (pDevice->wasapi.pMappedBufferPlayback != NULL) {
            ma_IAudioRenderClient_ReleaseBuffer((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient, pDevice->wasapi.mappedBufferPlaybackCap, 0);
            pDevice->wasapi.pMappedBufferPlayback   = NULL;
            pDevice->wasapi.mappedBufferPlaybackCap = 0;
            pDevice->wasapi.mappedBufferPlaybackLen = 0;
        }

        ma_IAudioRenderClient_Release((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient);
    }
    if (pDevice->wasapi.pCaptureClient) {
        if (pDevice->wasapi.pMappedBufferCapture != NULL) {
            ma_IAudioCaptureClient_ReleaseBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, pDevice->wasapi.mappedBufferCaptureCap);
            pDevice->wasapi.pMappedBufferCapture   = NULL;
            pDevice->wasapi.mappedBufferCaptureCap = 0;
            pDevice->wasapi.mappedBufferCaptureLen = 0;
        }

        ma_IAudioCaptureClient_Release((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient);
    }

    if (pDevice->wasapi.pAudioClientPlayback) {
        ma_IAudioClient_Release((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback);
    }
    if (pDevice->wasapi.pAudioClientCapture) {
        ma_IAudioClient_Release((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
    }

    if (pDevice->wasapi.hEventPlayback) {
        CloseHandle((HANDLE)pDevice->wasapi.hEventPlayback);
    }
    if (pDevice->wasapi.hEventCapture) {
        CloseHandle((HANDLE)pDevice->wasapi.hEventCapture);
    }

    return MA_SUCCESS;
}


typedef struct
{
    /* Input. */
    ma_format formatIn;
    ma_uint32 channelsIn;
    ma_uint32 sampleRateIn;
    ma_channel channelMapIn[MA_MAX_CHANNELS];
    ma_uint32 periodSizeInFramesIn;
    ma_uint32 periodSizeInMillisecondsIn;
    ma_uint32 periodsIn;
    ma_share_mode shareMode;
    ma_performance_profile performanceProfile;
    ma_bool32 noAutoConvertSRC;
    ma_bool32 noDefaultQualitySRC;
    ma_bool32 noHardwareOffloading;
    ma_uint32 loopbackProcessID;
    ma_bool32 loopbackProcessExclude;

    /* Output. */
    ma_IAudioClient* pAudioClient;
    ma_IAudioRenderClient* pRenderClient;
    ma_IAudioCaptureClient* pCaptureClient;
    ma_format formatOut;
    ma_uint32 channelsOut;
    ma_uint32 sampleRateOut;
    ma_channel channelMapOut[MA_MAX_CHANNELS];
    ma_uint32 periodSizeInFramesOut;
    ma_uint32 periodsOut;
    ma_bool32 usingAudioClient3;
    char deviceName[256];
    ma_device_id id;
} ma_device_init_internal_data__wasapi;

static ma_result ma_device_init_internal__wasapi(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_init_internal_data__wasapi* pData)
{
    HRESULT hr;
    ma_result result = MA_SUCCESS;
    const char* errorMsg = "";
    MA_AUDCLNT_SHAREMODE shareMode = MA_AUDCLNT_SHAREMODE_SHARED;
    DWORD streamFlags = 0;
    MA_REFERENCE_TIME periodDurationInMicroseconds;
    ma_bool32 wasInitializedUsingIAudioClient3 = MA_FALSE;
    MA_WAVEFORMATEXTENSIBLE wf;
    ma_WASAPIDeviceInterface* pDeviceInterface = NULL;
    ma_IAudioClient2* pAudioClient2;
    ma_uint32 nativeSampleRate;
    ma_bool32 usingProcessLoopback = MA_FALSE;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pData != NULL);

    /* This function is only used to initialize one device type: either playback, capture or loopback. Never full-duplex. */
    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }

    usingProcessLoopback = deviceType == ma_device_type_loopback && pData->loopbackProcessID != 0 && pDeviceID == NULL;

    pData->pAudioClient = NULL;
    pData->pRenderClient = NULL;
    pData->pCaptureClient = NULL;

    streamFlags = MA_AUDCLNT_STREAMFLAGS_EVENTCALLBACK;
    if (!pData->noAutoConvertSRC && pData->sampleRateIn != 0 && pData->shareMode != ma_share_mode_exclusive) {    /* <-- Exclusive streams must use the native sample rate. */
        streamFlags |= MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM;
    }
    if (!pData->noDefaultQualitySRC && pData->sampleRateIn != 0 && (streamFlags & MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM) != 0) {
        streamFlags |= MA_AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY;
    }
    if (deviceType == ma_device_type_loopback) {
        streamFlags |= MA_AUDCLNT_STREAMFLAGS_LOOPBACK;
    }

    result = ma_context_get_IAudioClient__wasapi(pContext, deviceType, pDeviceID, pData->loopbackProcessID, pData->loopbackProcessExclude, &pData->pAudioClient, &pDeviceInterface);
    if (result != MA_SUCCESS) {
        goto done;
    }

    MA_ZERO_OBJECT(&wf);

    /* Try enabling hardware offloading. */
    if (!pData->noHardwareOffloading) {
        hr = ma_IAudioClient_QueryInterface(pData->pAudioClient, &MA_IID_IAudioClient2, (void**)&pAudioClient2);
        if (SUCCEEDED(hr)) {
            BOOL isHardwareOffloadingSupported = 0;
            hr = ma_IAudioClient2_IsOffloadCapable(pAudioClient2, MA_AudioCategory_Other, &isHardwareOffloadingSupported);
            if (SUCCEEDED(hr) && isHardwareOffloadingSupported) {
                ma_AudioClientProperties clientProperties;
                MA_ZERO_OBJECT(&clientProperties);
                clientProperties.cbSize = sizeof(clientProperties);
                clientProperties.bIsOffload = 1;
                clientProperties.eCategory = MA_AudioCategory_Other;
                ma_IAudioClient2_SetClientProperties(pAudioClient2, &clientProperties);
            }

            pAudioClient2->lpVtbl->Release(pAudioClient2);
        }
    }

    /* Here is where we try to determine the best format to use with the device. If the client if wanting exclusive mode, first try finding the best format for that. If this fails, fall back to shared mode. */
    result = MA_FORMAT_NOT_SUPPORTED;
    if (pData->shareMode == ma_share_mode_exclusive) {
    #if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
        /* In exclusive mode on desktop we always use the backend's native format. */
        ma_IPropertyStore* pStore = NULL;
        hr = ma_IMMDevice_OpenPropertyStore(pDeviceInterface, STGM_READ, &pStore);
        if (SUCCEEDED(hr)) {
            MA_PROPVARIANT prop;
            ma_PropVariantInit(&prop);
            hr = ma_IPropertyStore_GetValue(pStore, &MA_PKEY_AudioEngine_DeviceFormat, &prop);
            if (SUCCEEDED(hr)) {
                MA_WAVEFORMATEX* pActualFormat = (MA_WAVEFORMATEX*)prop.blob.pBlobData;
                hr = ma_IAudioClient_IsFormatSupported((ma_IAudioClient*)pData->pAudioClient, MA_AUDCLNT_SHAREMODE_EXCLUSIVE, pActualFormat, NULL);
                if (SUCCEEDED(hr)) {
                    MA_COPY_MEMORY(&wf, pActualFormat, sizeof(MA_WAVEFORMATEXTENSIBLE));
                }

                ma_PropVariantClear(pContext, &prop);
            }

            ma_IPropertyStore_Release(pStore);
        }
    #else
        /*
        I do not know how to query the device's native format on UWP so for now I'm just disabling support for
        exclusive mode. The alternative is to enumerate over different formats and check IsFormatSupported()
        until you find one that works.

        TODO: Add support for exclusive mode to UWP.
        */
        hr = S_FALSE;
    #endif

        if (hr == S_OK) {
            shareMode = MA_AUDCLNT_SHAREMODE_EXCLUSIVE;
            result = MA_SUCCESS;
        } else {
            result = MA_SHARE_MODE_NOT_SUPPORTED;
        }
    } else {
        /* In shared mode we are always using the format reported by the operating system. */
        MA_WAVEFORMATEXTENSIBLE* pNativeFormat = NULL;
        hr = ma_IAudioClient_GetMixFormat((ma_IAudioClient*)pData->pAudioClient, (MA_WAVEFORMATEX**)&pNativeFormat);
        if (hr != S_OK) {
            /* When using process-specific loopback, GetMixFormat() seems to always fail. */
            if (usingProcessLoopback) {
                wf.wFormatTag      = WAVE_FORMAT_IEEE_FLOAT;
                wf.nChannels       = 2;
                wf.nSamplesPerSec  = 44100;
                wf.wBitsPerSample  = 32;
                wf.nBlockAlign     = wf.nChannels * wf.wBitsPerSample / 8;
                wf.nAvgBytesPerSec = wf.nSamplesPerSec * wf.nBlockAlign;
                wf.cbSize          = sizeof(MA_WAVEFORMATEX);

                result = MA_SUCCESS;
            } else {
                result = MA_FORMAT_NOT_SUPPORTED;
            }
        } else {
            /*
            I've seen cases where cbSize will be set to sizeof(WAVEFORMATEX) even though the structure itself
            is given the format tag of WAVE_FORMAT_EXTENSIBLE. If the format tag is WAVE_FORMAT_EXTENSIBLE
            want to make sure we copy the whole WAVEFORMATEXTENSIBLE structure. Otherwise we'll have to be
            safe and only copy the WAVEFORMATEX part.
            */
            if (pNativeFormat->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
                MA_COPY_MEMORY(&wf, pNativeFormat, sizeof(MA_WAVEFORMATEXTENSIBLE));
            } else {
                /* I've seen a case where cbSize was set to 0. Assume sizeof(WAVEFORMATEX) in this case. */
                size_t cbSize = pNativeFormat->cbSize;
                if (cbSize == 0) {
                    cbSize = sizeof(MA_WAVEFORMATEX);
                }

                /* Make sure we don't copy more than the capacity of `wf`. */
                if (cbSize > sizeof(wf)) {
                    cbSize = sizeof(wf);
                }

                MA_COPY_MEMORY(&wf, pNativeFormat, cbSize);
            }

            result = MA_SUCCESS;
        }

        ma_CoTaskMemFree(pContext, pNativeFormat);

        shareMode = MA_AUDCLNT_SHAREMODE_SHARED;
    }

    /* Return an error if we still haven't found a format. */
    if (result != MA_SUCCESS) {
        errorMsg = "[WASAPI] Failed to find best device mix format.";
        goto done;
    }

    /*
    Override the native sample rate with the one requested by the caller, but only if we're not using the default sample rate. We'll use
    WASAPI to perform the sample rate conversion.
    */
    nativeSampleRate = wf.nSamplesPerSec;
    if (streamFlags & MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM) {
        wf.nSamplesPerSec = (pData->sampleRateIn != 0) ? pData->sampleRateIn : MA_DEFAULT_SAMPLE_RATE;
        wf.nAvgBytesPerSec = wf.nSamplesPerSec * wf.nBlockAlign;
    }

    pData->formatOut = ma_format_from_WAVEFORMATEX((MA_WAVEFORMATEX*)&wf);
    if (pData->formatOut == ma_format_unknown) {
        /*
        The format isn't supported. This is almost certainly because the exclusive mode format isn't supported by miniaudio. We need to return MA_SHARE_MODE_NOT_SUPPORTED
        in this case so that the caller can detect it and fall back to shared mode if desired. We should never get here if shared mode was requested, but just for
        completeness we'll check for it and return MA_FORMAT_NOT_SUPPORTED.
        */
        if (shareMode == MA_AUDCLNT_SHAREMODE_EXCLUSIVE) {
            result = MA_SHARE_MODE_NOT_SUPPORTED;
        } else {
            result = MA_FORMAT_NOT_SUPPORTED;
        }

        errorMsg = "[WASAPI] Native format not supported.";
        goto done;
    }

    pData->channelsOut = wf.nChannels;
    pData->sampleRateOut = wf.nSamplesPerSec;

    /*
    Get the internal channel map based on the channel mask. There is a possibility that GetMixFormat() returns
    a WAVEFORMATEX instead of a WAVEFORMATEXTENSIBLE, in which case the channel mask will be undefined. In this
    case we'll just use the default channel map.
    */
    if (wf.wFormatTag == WAVE_FORMAT_EXTENSIBLE || wf.cbSize >= sizeof(MA_WAVEFORMATEXTENSIBLE)) {
        ma_channel_mask_to_channel_map__win32(wf.dwChannelMask, pData->channelsOut, pData->channelMapOut);
    } else {
        ma_channel_map_init_standard(ma_standard_channel_map_microsoft, pData->channelMapOut, ma_countof(pData->channelMapOut), pData->channelsOut);
    }

    /* Period size. */
    pData->periodsOut = (pData->periodsIn != 0) ? pData->periodsIn : MA_DEFAULT_PERIODS;
    pData->periodSizeInFramesOut = pData->periodSizeInFramesIn;
    if (pData->periodSizeInFramesOut == 0) {
        if (pData->periodSizeInMillisecondsIn == 0) {
            if (pData->performanceProfile == ma_performance_profile_low_latency) {
                pData->periodSizeInFramesOut = ma_calculate_buffer_size_in_frames_from_milliseconds(MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY, wf.nSamplesPerSec);
            } else {
                pData->periodSizeInFramesOut = ma_calculate_buffer_size_in_frames_from_milliseconds(MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE, wf.nSamplesPerSec);
            }
        } else {
            pData->periodSizeInFramesOut = ma_calculate_buffer_size_in_frames_from_milliseconds(pData->periodSizeInMillisecondsIn, wf.nSamplesPerSec);
        }
    }

    periodDurationInMicroseconds = ((ma_uint64)pData->periodSizeInFramesOut * 1000 * 1000) / wf.nSamplesPerSec;


    /* Slightly different initialization for shared and exclusive modes. We try exclusive mode first, and if it fails, fall back to shared mode. */
    if (shareMode == MA_AUDCLNT_SHAREMODE_EXCLUSIVE) {
        MA_REFERENCE_TIME bufferDuration = periodDurationInMicroseconds * pData->periodsOut * 10;

        /*
        If the periodicity is too small, Initialize() will fail with AUDCLNT_E_INVALID_DEVICE_PERIOD. In this case we should just keep increasing
        it and trying it again.
        */
        hr = E_FAIL;
        for (;;) {
            hr = ma_IAudioClient_Initialize((ma_IAudioClient*)pData->pAudioClient, shareMode, streamFlags, bufferDuration, bufferDuration, (MA_WAVEFORMATEX*)&wf, NULL);
            if (hr == MA_AUDCLNT_E_INVALID_DEVICE_PERIOD) {
                if (bufferDuration > 500*10000) {
                    break;
                } else {
                    if (bufferDuration == 0) {  /* <-- Just a sanity check to prevent an infinite loop. Should never happen, but it makes me feel better. */
                        break;
                    }

                    bufferDuration = bufferDuration * 2;
                    continue;
                }
            } else {
                break;
            }
        }

        if (hr == MA_AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED) {
            ma_uint32 bufferSizeInFrames;
            hr = ma_IAudioClient_GetBufferSize((ma_IAudioClient*)pData->pAudioClient, &bufferSizeInFrames);
            if (SUCCEEDED(hr)) {
                bufferDuration = (MA_REFERENCE_TIME)((10000.0 * 1000 / wf.nSamplesPerSec * bufferSizeInFrames) + 0.5);

                /* Unfortunately we need to release and re-acquire the audio client according to MSDN. Seems silly - why not just call IAudioClient_Initialize() again?! */
                ma_IAudioClient_Release((ma_IAudioClient*)pData->pAudioClient);

            #if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
                hr = ma_IMMDevice_Activate(pDeviceInterface, &MA_IID_IAudioClient, CLSCTX_ALL, NULL, (void**)&pData->pAudioClient);
            #else
                hr = ma_IUnknown_QueryInterface(pDeviceInterface, &MA_IID_IAudioClient, (void**)&pData->pAudioClient);
            #endif

                if (SUCCEEDED(hr)) {
                    hr = ma_IAudioClient_Initialize((ma_IAudioClient*)pData->pAudioClient, shareMode, streamFlags, bufferDuration, bufferDuration, (MA_WAVEFORMATEX*)&wf, NULL);
                }
            }
        }

        if (FAILED(hr)) {
            /* Failed to initialize in exclusive mode. Don't fall back to shared mode - instead tell the client about it. They can reinitialize in shared mode if they want. */
            if (hr == E_ACCESSDENIED) {
                errorMsg = "[WASAPI] Failed to initialize device in exclusive mode. Access denied.", result = MA_ACCESS_DENIED;
            } else if (hr == MA_AUDCLNT_E_DEVICE_IN_USE) {
                errorMsg = "[WASAPI] Failed to initialize device in exclusive mode. Device in use.", result = MA_BUSY;
            } else {
                errorMsg = "[WASAPI] Failed to initialize device in exclusive mode."; result = ma_result_from_HRESULT(hr);
            }
            goto done;
        }
    }

    if (shareMode == MA_AUDCLNT_SHAREMODE_SHARED) {
        /*
        Low latency shared mode via IAudioClient3.

        NOTE
        ====
        Contrary to the documentation on MSDN (https://docs.microsoft.com/en-us/windows/win32/api/audioclient/nf-audioclient-iaudioclient3-initializesharedaudiostream), the
        use of AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM and AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY with IAudioClient3_InitializeSharedAudioStream() absolutely does not work. Using
        any of these flags will result in HRESULT code 0x88890021. The other problem is that calling IAudioClient3_GetSharedModeEnginePeriod() with a sample rate different to
        that returned by IAudioClient_GetMixFormat() also results in an error. I'm therefore disabling low-latency shared mode with AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM.
        */
        #ifndef MA_WASAPI_NO_LOW_LATENCY_SHARED_MODE
        {
            if ((streamFlags & MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM) == 0 || nativeSampleRate == wf.nSamplesPerSec) {
                ma_IAudioClient3* pAudioClient3 = NULL;
                hr = ma_IAudioClient_QueryInterface(pData->pAudioClient, &MA_IID_IAudioClient3, (void**)&pAudioClient3);
                if (SUCCEEDED(hr)) {
                    ma_uint32 defaultPeriodInFrames;
                    ma_uint32 fundamentalPeriodInFrames;
                    ma_uint32 minPeriodInFrames;
                    ma_uint32 maxPeriodInFrames;
                    hr = ma_IAudioClient3_GetSharedModeEnginePeriod(pAudioClient3, (MA_WAVEFORMATEX*)&wf, &defaultPeriodInFrames, &fundamentalPeriodInFrames, &minPeriodInFrames, &maxPeriodInFrames);
                    if (SUCCEEDED(hr)) {
                        ma_uint32 desiredPeriodInFrames = pData->periodSizeInFramesOut;
                        ma_uint32 actualPeriodInFrames  = desiredPeriodInFrames;

                        /* Make sure the period size is a multiple of fundamentalPeriodInFrames. */
                        actualPeriodInFrames = actualPeriodInFrames / fundamentalPeriodInFrames;
                        actualPeriodInFrames = actualPeriodInFrames * fundamentalPeriodInFrames;

                        /* The period needs to be clamped between minPeriodInFrames and maxPeriodInFrames. */
                        actualPeriodInFrames = ma_clamp(actualPeriodInFrames, minPeriodInFrames, maxPeriodInFrames);

                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[WASAPI] Trying IAudioClient3_InitializeSharedAudioStream(actualPeriodInFrames=%d)\n", actualPeriodInFrames);
                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "    defaultPeriodInFrames=%d\n", defaultPeriodInFrames);
                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "    fundamentalPeriodInFrames=%d\n", fundamentalPeriodInFrames);
                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "    minPeriodInFrames=%d\n", minPeriodInFrames);
                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "    maxPeriodInFrames=%d\n", maxPeriodInFrames);

                        /* If the client requested a largish buffer than we don't actually want to use low latency shared mode because it forces small buffers. */
                        if (actualPeriodInFrames >= desiredPeriodInFrames) {
                            /*
                            MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | MA_AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY must not be in the stream flags. If either of these are specified,
                            IAudioClient3_InitializeSharedAudioStream() will fail.
                            */
                            hr = ma_IAudioClient3_InitializeSharedAudioStream(pAudioClient3, streamFlags & ~(MA_AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | MA_AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY), actualPeriodInFrames, (MA_WAVEFORMATEX*)&wf, NULL);
                            if (SUCCEEDED(hr)) {
                                wasInitializedUsingIAudioClient3 = MA_TRUE;
                                pData->periodSizeInFramesOut = actualPeriodInFrames;

                                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[WASAPI] Using IAudioClient3\n");
                                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "    periodSizeInFramesOut=%d\n", pData->periodSizeInFramesOut);
                            } else {
                                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[WASAPI] IAudioClient3_InitializeSharedAudioStream failed. Falling back to IAudioClient.\n");
                            }
                        } else {
                            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[WASAPI] Not using IAudioClient3 because the desired period size is larger than the maximum supported by IAudioClient3.\n");
                        }
                    } else {
                        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[WASAPI] IAudioClient3_GetSharedModeEnginePeriod failed. Falling back to IAudioClient.\n");
                    }

                    ma_IAudioClient3_Release(pAudioClient3);
                    pAudioClient3 = NULL;
                }
            }
        }
        #else
        {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[WASAPI] Not using IAudioClient3 because MA_WASAPI_NO_LOW_LATENCY_SHARED_MODE is enabled.\n");
        }
        #endif

        /* If we don't have an IAudioClient3 then we need to use the normal initialization routine. */
        if (!wasInitializedUsingIAudioClient3) {
            MA_REFERENCE_TIME bufferDuration = periodDurationInMicroseconds * pData->periodsOut * 10;   /* <-- Multiply by 10 for microseconds to 100-nanoseconds. */
            hr = ma_IAudioClient_Initialize((ma_IAudioClient*)pData->pAudioClient, shareMode, streamFlags, bufferDuration, 0, (const MA_WAVEFORMATEX*)&wf, NULL);
            if (FAILED(hr)) {
                if (hr == E_ACCESSDENIED) {
                    errorMsg = "[WASAPI] Failed to initialize device. Access denied.", result = MA_ACCESS_DENIED;
                } else if (hr == MA_AUDCLNT_E_DEVICE_IN_USE) {
                    errorMsg = "[WASAPI] Failed to initialize device. Device in use.", result = MA_BUSY;
                } else {
                    errorMsg = "[WASAPI] Failed to initialize device.", result = ma_result_from_HRESULT(hr);
                }

                goto done;
            }
        }
    }

    if (!wasInitializedUsingIAudioClient3) {
        ma_uint32 bufferSizeInFrames = 0;
        hr = ma_IAudioClient_GetBufferSize((ma_IAudioClient*)pData->pAudioClient, &bufferSizeInFrames);
        if (FAILED(hr)) {
            errorMsg = "[WASAPI] Failed to get audio client's actual buffer size.", result = ma_result_from_HRESULT(hr);
            goto done;
        }

        /*
        When using process loopback mode, retrieval of the buffer size seems to result in totally
        incorrect values. In this case we'll just assume it's the same size as what we requested
        when we initialized the client.
        */
        if (usingProcessLoopback) {
            bufferSizeInFrames = (ma_uint32)((periodDurationInMicroseconds * pData->periodsOut) * pData->sampleRateOut / 1000000);
        }

        pData->periodSizeInFramesOut = bufferSizeInFrames / pData->periodsOut;
    }

    pData->usingAudioClient3 = wasInitializedUsingIAudioClient3;


    if (deviceType == ma_device_type_playback) {
        result = ma_device_create_IAudioClient_service__wasapi(pContext, deviceType, (ma_IAudioClient*)pData->pAudioClient, (void**)&pData->pRenderClient);
    } else {
        result = ma_device_create_IAudioClient_service__wasapi(pContext, deviceType, (ma_IAudioClient*)pData->pAudioClient, (void**)&pData->pCaptureClient);
    }

    /*if (FAILED(hr)) {*/
    if (result != MA_SUCCESS) {
        errorMsg = "[WASAPI] Failed to get audio client service.";
        goto done;
    }


    /* Grab the name of the device. */
    #if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    {
        ma_IPropertyStore *pProperties;
        hr = ma_IMMDevice_OpenPropertyStore(pDeviceInterface, STGM_READ, &pProperties);
        if (SUCCEEDED(hr)) {
            MA_PROPVARIANT varName;
            ma_PropVariantInit(&varName);
            hr = ma_IPropertyStore_GetValue(pProperties, &MA_PKEY_Device_FriendlyName, &varName);
            if (SUCCEEDED(hr)) {
                WideCharToMultiByte(CP_UTF8, 0, varName.pwszVal, -1, pData->deviceName, sizeof(pData->deviceName), 0, FALSE);
                ma_PropVariantClear(pContext, &varName);
            }

            ma_IPropertyStore_Release(pProperties);
        }
    }
    #endif

    /*
    For the WASAPI backend we need to know the actual IDs of the device in order to do automatic
    stream routing so that IDs can be compared and we can determine which device has been detached
    and whether or not it matches with our ma_device.
    */
    #if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    {
        /* Desktop */
        ma_context_get_device_id_from_MMDevice__wasapi(pContext, pDeviceInterface, &pData->id);
    }
    #else
    {
        /* UWP */
        /* TODO: Implement me. Need to figure out how to get the ID of the default device. */
    }
    #endif

done:
    /* Clean up. */
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    if (pDeviceInterface != NULL) {
        ma_IMMDevice_Release(pDeviceInterface);
    }
#else
    if (pDeviceInterface != NULL) {
        ma_IUnknown_Release(pDeviceInterface);
    }
#endif

    if (result != MA_SUCCESS) {
        if (pData->pRenderClient) {
            ma_IAudioRenderClient_Release((ma_IAudioRenderClient*)pData->pRenderClient);
            pData->pRenderClient = NULL;
        }
        if (pData->pCaptureClient) {
            ma_IAudioCaptureClient_Release((ma_IAudioCaptureClient*)pData->pCaptureClient);
            pData->pCaptureClient = NULL;
        }
        if (pData->pAudioClient) {
            ma_IAudioClient_Release((ma_IAudioClient*)pData->pAudioClient);
            pData->pAudioClient = NULL;
        }

        if (errorMsg != NULL && errorMsg[0] != '\0') {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "%s\n", errorMsg);
        }

        return result;
    } else {
        return MA_SUCCESS;
    }
}

static ma_result ma_device_reinit__wasapi(ma_device* pDevice, ma_device_type deviceType)
{
    ma_device_init_internal_data__wasapi data;
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    /* We only re-initialize the playback or capture device. Never a full-duplex device. */
    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }


    /*
    Before reinitializing the device we need to free the previous audio clients.

    There's a known memory leak here. We will be calling this from the routing change callback that
    is fired by WASAPI. If we attempt to release the IAudioClient we will deadlock. In my opinion
    this is a bug. I'm not sure what I need to do to handle this cleanly, but I think we'll probably
    need some system where we post an event, but delay the execution of it until the callback has
    returned. I'm not sure how to do this reliably, however. I have set up some infrastructure for
    a command thread which might be useful for this.
    */
    if (deviceType == ma_device_type_capture || deviceType == ma_device_type_loopback) {
        if (pDevice->wasapi.pCaptureClient) {
            ma_IAudioCaptureClient_Release((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient);
            pDevice->wasapi.pCaptureClient = NULL;
        }

        if (pDevice->wasapi.pAudioClientCapture) {
            /*ma_device_release_IAudioClient_service__wasapi(pDevice, ma_device_type_capture);*/
            pDevice->wasapi.pAudioClientCapture = NULL;
        }
    }

    if (deviceType == ma_device_type_playback) {
        if (pDevice->wasapi.pRenderClient) {
            ma_IAudioRenderClient_Release((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient);
            pDevice->wasapi.pRenderClient = NULL;
        }

        if (pDevice->wasapi.pAudioClientPlayback) {
            /*ma_device_release_IAudioClient_service__wasapi(pDevice, ma_device_type_playback);*/
            pDevice->wasapi.pAudioClientPlayback = NULL;
        }
    }


    if (deviceType == ma_device_type_playback) {
        data.formatIn               = pDevice->playback.format;
        data.channelsIn             = pDevice->playback.channels;
        MA_COPY_MEMORY(data.channelMapIn, pDevice->playback.channelMap, sizeof(pDevice->playback.channelMap));
        data.shareMode              = pDevice->playback.shareMode;
    } else {
        data.formatIn               = pDevice->capture.format;
        data.channelsIn             = pDevice->capture.channels;
        MA_COPY_MEMORY(data.channelMapIn, pDevice->capture.channelMap, sizeof(pDevice->capture.channelMap));
        data.shareMode              = pDevice->capture.shareMode;
    }

    data.sampleRateIn               = pDevice->sampleRate;
    data.periodSizeInFramesIn       = pDevice->wasapi.originalPeriodSizeInFrames;
    data.periodSizeInMillisecondsIn = pDevice->wasapi.originalPeriodSizeInMilliseconds;
    data.periodsIn                  = pDevice->wasapi.originalPeriods;
    data.performanceProfile         = pDevice->wasapi.originalPerformanceProfile;
    data.noAutoConvertSRC           = pDevice->wasapi.noAutoConvertSRC;
    data.noDefaultQualitySRC        = pDevice->wasapi.noDefaultQualitySRC;
    data.noHardwareOffloading       = pDevice->wasapi.noHardwareOffloading;
    data.loopbackProcessID          = pDevice->wasapi.loopbackProcessID;
    data.loopbackProcessExclude     = pDevice->wasapi.loopbackProcessExclude;
    result = ma_device_init_internal__wasapi(pDevice->pContext, deviceType, NULL, &data);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* At this point we have some new objects ready to go. We need to uninitialize the previous ones and then set the new ones. */
    if (deviceType == ma_device_type_capture || deviceType == ma_device_type_loopback) {
        pDevice->wasapi.pAudioClientCapture         = data.pAudioClient;
        pDevice->wasapi.pCaptureClient              = data.pCaptureClient;

        pDevice->capture.internalFormat             = data.formatOut;
        pDevice->capture.internalChannels           = data.channelsOut;
        pDevice->capture.internalSampleRate         = data.sampleRateOut;
        MA_COPY_MEMORY(pDevice->capture.internalChannelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDevice->capture.internalPeriodSizeInFrames = data.periodSizeInFramesOut;
        pDevice->capture.internalPeriods            = data.periodsOut;
        ma_strcpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), data.deviceName);

        ma_IAudioClient_SetEventHandle((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture, (HANDLE)pDevice->wasapi.hEventCapture);

        pDevice->wasapi.periodSizeInFramesCapture = data.periodSizeInFramesOut;
        ma_IAudioClient_GetBufferSize((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture, &pDevice->wasapi.actualBufferSizeInFramesCapture);

        /* We must always have a valid ID. */
        ma_strcpy_s_WCHAR(pDevice->capture.id.wasapi, sizeof(pDevice->capture.id.wasapi), data.id.wasapi);
    }

    if (deviceType == ma_device_type_playback) {
        pDevice->wasapi.pAudioClientPlayback         = data.pAudioClient;
        pDevice->wasapi.pRenderClient                = data.pRenderClient;

        pDevice->playback.internalFormat             = data.formatOut;
        pDevice->playback.internalChannels           = data.channelsOut;
        pDevice->playback.internalSampleRate         = data.sampleRateOut;
        MA_COPY_MEMORY(pDevice->playback.internalChannelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDevice->playback.internalPeriodSizeInFrames = data.periodSizeInFramesOut;
        pDevice->playback.internalPeriods            = data.periodsOut;
        ma_strcpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), data.deviceName);

        ma_IAudioClient_SetEventHandle((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback, (HANDLE)pDevice->wasapi.hEventPlayback);

        pDevice->wasapi.periodSizeInFramesPlayback = data.periodSizeInFramesOut;
        ma_IAudioClient_GetBufferSize((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback, &pDevice->wasapi.actualBufferSizeInFramesPlayback);

        /* We must always have a valid ID because rerouting will look at it. */
        ma_strcpy_s_WCHAR(pDevice->playback.id.wasapi, sizeof(pDevice->playback.id.wasapi), data.id.wasapi);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_init__wasapi(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result = MA_SUCCESS;

#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    HRESULT hr;
    ma_IMMDeviceEnumerator* pDeviceEnumerator;
#endif

    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->wasapi);
    pDevice->wasapi.usage                  = pConfig->wasapi.usage;
    pDevice->wasapi.noAutoConvertSRC       = pConfig->wasapi.noAutoConvertSRC;
    pDevice->wasapi.noDefaultQualitySRC    = pConfig->wasapi.noDefaultQualitySRC;
    pDevice->wasapi.noHardwareOffloading   = pConfig->wasapi.noHardwareOffloading;
    pDevice->wasapi.loopbackProcessID      = pConfig->wasapi.loopbackProcessID;
    pDevice->wasapi.loopbackProcessExclude = pConfig->wasapi.loopbackProcessExclude;

    /* Exclusive mode is not allowed with loopback. */
    if (pConfig->deviceType == ma_device_type_loopback && pConfig->playback.shareMode == ma_share_mode_exclusive) {
        return MA_INVALID_DEVICE_CONFIG;
    }

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex || pConfig->deviceType == ma_device_type_loopback) {
        ma_device_init_internal_data__wasapi data;
        data.formatIn                   = pDescriptorCapture->format;
        data.channelsIn                 = pDescriptorCapture->channels;
        data.sampleRateIn               = pDescriptorCapture->sampleRate;
        MA_COPY_MEMORY(data.channelMapIn, pDescriptorCapture->channelMap, sizeof(pDescriptorCapture->channelMap));
        data.periodSizeInFramesIn       = pDescriptorCapture->periodSizeInFrames;
        data.periodSizeInMillisecondsIn = pDescriptorCapture->periodSizeInMilliseconds;
        data.periodsIn                  = pDescriptorCapture->periodCount;
        data.shareMode                  = pDescriptorCapture->shareMode;
        data.performanceProfile         = pConfig->performanceProfile;
        data.noAutoConvertSRC           = pConfig->wasapi.noAutoConvertSRC;
        data.noDefaultQualitySRC        = pConfig->wasapi.noDefaultQualitySRC;
        data.noHardwareOffloading       = pConfig->wasapi.noHardwareOffloading;
        data.loopbackProcessID          = pConfig->wasapi.loopbackProcessID;
        data.loopbackProcessExclude     = pConfig->wasapi.loopbackProcessExclude;

        result = ma_device_init_internal__wasapi(pDevice->pContext, (pConfig->deviceType == ma_device_type_loopback) ? ma_device_type_loopback : ma_device_type_capture, pDescriptorCapture->pDeviceID, &data);
        if (result != MA_SUCCESS) {
            return result;
        }

        pDevice->wasapi.pAudioClientCapture              = data.pAudioClient;
        pDevice->wasapi.pCaptureClient                   = data.pCaptureClient;
        pDevice->wasapi.originalPeriodSizeInMilliseconds = pDescriptorCapture->periodSizeInMilliseconds;
        pDevice->wasapi.originalPeriodSizeInFrames       = pDescriptorCapture->periodSizeInFrames;
        pDevice->wasapi.originalPeriods                  = pDescriptorCapture->periodCount;
        pDevice->wasapi.originalPerformanceProfile       = pConfig->performanceProfile;

        /*
        The event for capture needs to be manual reset for the same reason as playback. We keep the initial state set to unsignaled,
        however, because we want to block until we actually have something for the first call to ma_device_read().
        */
        pDevice->wasapi.hEventCapture = (ma_handle)CreateEventA(NULL, FALSE, FALSE, NULL);  /* Auto reset, unsignaled by default. */
        if (pDevice->wasapi.hEventCapture == NULL) {
            result = ma_result_from_GetLastError(GetLastError());

            if (pDevice->wasapi.pCaptureClient != NULL) {
                ma_IAudioCaptureClient_Release((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient);
                pDevice->wasapi.pCaptureClient = NULL;
            }
            if (pDevice->wasapi.pAudioClientCapture != NULL) {
                ma_IAudioClient_Release((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
                pDevice->wasapi.pAudioClientCapture = NULL;
            }

            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create event for capture.");
            return result;
        }
        ma_IAudioClient_SetEventHandle((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture, (HANDLE)pDevice->wasapi.hEventCapture);

        pDevice->wasapi.periodSizeInFramesCapture = data.periodSizeInFramesOut;
        ma_IAudioClient_GetBufferSize((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture, &pDevice->wasapi.actualBufferSizeInFramesCapture);

        /* We must always have a valid ID. */
        ma_strcpy_s_WCHAR(pDevice->capture.id.wasapi, sizeof(pDevice->capture.id.wasapi), data.id.wasapi);

        /* The descriptor needs to be updated with actual values. */
        pDescriptorCapture->format             = data.formatOut;
        pDescriptorCapture->channels           = data.channelsOut;
        pDescriptorCapture->sampleRate         = data.sampleRateOut;
        MA_COPY_MEMORY(pDescriptorCapture->channelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDescriptorCapture->periodSizeInFrames = data.periodSizeInFramesOut;
        pDescriptorCapture->periodCount        = data.periodsOut;
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_device_init_internal_data__wasapi data;
        data.formatIn                   = pDescriptorPlayback->format;
        data.channelsIn                 = pDescriptorPlayback->channels;
        data.sampleRateIn               = pDescriptorPlayback->sampleRate;
        MA_COPY_MEMORY(data.channelMapIn, pDescriptorPlayback->channelMap, sizeof(pDescriptorPlayback->channelMap));
        data.periodSizeInFramesIn       = pDescriptorPlayback->periodSizeInFrames;
        data.periodSizeInMillisecondsIn = pDescriptorPlayback->periodSizeInMilliseconds;
        data.periodsIn                  = pDescriptorPlayback->periodCount;
        data.shareMode                  = pDescriptorPlayback->shareMode;
        data.performanceProfile         = pConfig->performanceProfile;
        data.noAutoConvertSRC           = pConfig->wasapi.noAutoConvertSRC;
        data.noDefaultQualitySRC        = pConfig->wasapi.noDefaultQualitySRC;
        data.noHardwareOffloading       = pConfig->wasapi.noHardwareOffloading;
        data.loopbackProcessID          = pConfig->wasapi.loopbackProcessID;
        data.loopbackProcessExclude     = pConfig->wasapi.loopbackProcessExclude;

        result = ma_device_init_internal__wasapi(pDevice->pContext, ma_device_type_playback, pDescriptorPlayback->pDeviceID, &data);
        if (result != MA_SUCCESS) {
            if (pConfig->deviceType == ma_device_type_duplex) {
                if (pDevice->wasapi.pCaptureClient != NULL) {
                    ma_IAudioCaptureClient_Release((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient);
                    pDevice->wasapi.pCaptureClient = NULL;
                }
                if (pDevice->wasapi.pAudioClientCapture != NULL) {
                    ma_IAudioClient_Release((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
                    pDevice->wasapi.pAudioClientCapture = NULL;
                }

                CloseHandle((HANDLE)pDevice->wasapi.hEventCapture);
                pDevice->wasapi.hEventCapture = NULL;
            }
            return result;
        }

        pDevice->wasapi.pAudioClientPlayback             = data.pAudioClient;
        pDevice->wasapi.pRenderClient                    = data.pRenderClient;
        pDevice->wasapi.originalPeriodSizeInMilliseconds = pDescriptorPlayback->periodSizeInMilliseconds;
        pDevice->wasapi.originalPeriodSizeInFrames       = pDescriptorPlayback->periodSizeInFrames;
        pDevice->wasapi.originalPeriods                  = pDescriptorPlayback->periodCount;
        pDevice->wasapi.originalPerformanceProfile       = pConfig->performanceProfile;

        /*
        The event for playback is needs to be manual reset because we want to explicitly control the fact that it becomes signalled
        only after the whole available space has been filled, never before.

        The playback event also needs to be initially set to a signaled state so that the first call to ma_device_write() is able
        to get passed WaitForMultipleObjects().
        */
        pDevice->wasapi.hEventPlayback = (ma_handle)CreateEventA(NULL, FALSE, TRUE, NULL);  /* Auto reset, signaled by default. */
        if (pDevice->wasapi.hEventPlayback == NULL) {
            result = ma_result_from_GetLastError(GetLastError());

            if (pConfig->deviceType == ma_device_type_duplex) {
                if (pDevice->wasapi.pCaptureClient != NULL) {
                    ma_IAudioCaptureClient_Release((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient);
                    pDevice->wasapi.pCaptureClient = NULL;
                }
                if (pDevice->wasapi.pAudioClientCapture != NULL) {
                    ma_IAudioClient_Release((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
                    pDevice->wasapi.pAudioClientCapture = NULL;
                }

                CloseHandle((HANDLE)pDevice->wasapi.hEventCapture);
                pDevice->wasapi.hEventCapture = NULL;
            }

            if (pDevice->wasapi.pRenderClient != NULL) {
                ma_IAudioRenderClient_Release((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient);
                pDevice->wasapi.pRenderClient = NULL;
            }
            if (pDevice->wasapi.pAudioClientPlayback != NULL) {
                ma_IAudioClient_Release((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback);
                pDevice->wasapi.pAudioClientPlayback = NULL;
            }

            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create event for playback.");
            return result;
        }
        ma_IAudioClient_SetEventHandle((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback, (HANDLE)pDevice->wasapi.hEventPlayback);

        pDevice->wasapi.periodSizeInFramesPlayback = data.periodSizeInFramesOut;
        ma_IAudioClient_GetBufferSize((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback, &pDevice->wasapi.actualBufferSizeInFramesPlayback);

        /* We must always have a valid ID because rerouting will look at it. */
        ma_strcpy_s_WCHAR(pDevice->playback.id.wasapi, sizeof(pDevice->playback.id.wasapi), data.id.wasapi);

        /* The descriptor needs to be updated with actual values. */
        pDescriptorPlayback->format             = data.formatOut;
        pDescriptorPlayback->channels           = data.channelsOut;
        pDescriptorPlayback->sampleRate         = data.sampleRateOut;
        MA_COPY_MEMORY(pDescriptorPlayback->channelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDescriptorPlayback->periodSizeInFrames = data.periodSizeInFramesOut;
        pDescriptorPlayback->periodCount        = data.periodsOut;
    }

    /*
    We need to register a notification client to detect when the device has been disabled, unplugged or re-routed (when the default device changes). When
    we are connecting to the default device we want to do automatic stream routing when the device is disabled or unplugged. Otherwise we want to just
    stop the device outright and let the application handle it.
    */
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    if (pConfig->wasapi.noAutoStreamRouting == MA_FALSE) {
        if ((pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex || pConfig->deviceType == ma_device_type_loopback) && pConfig->capture.pDeviceID == NULL) {
            pDevice->wasapi.allowCaptureAutoStreamRouting = MA_TRUE;
        }
        if ((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pConfig->playback.pDeviceID == NULL) {
            pDevice->wasapi.allowPlaybackAutoStreamRouting = MA_TRUE;
        }
    }

    ma_mutex_init(&pDevice->wasapi.rerouteLock);

    hr = ma_CoCreateInstance(pDevice->pContext, &MA_CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &MA_IID_IMMDeviceEnumerator, (void**)&pDeviceEnumerator);
    if (FAILED(hr)) {
        ma_device_uninit__wasapi(pDevice);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to create device enumerator.");
        return ma_result_from_HRESULT(hr);
    }

    pDevice->wasapi.notificationClient.lpVtbl  = (void*)&g_maNotificationCientVtbl;
    pDevice->wasapi.notificationClient.counter = 1;
    pDevice->wasapi.notificationClient.pDevice = pDevice;

    hr = pDeviceEnumerator->lpVtbl->RegisterEndpointNotificationCallback(pDeviceEnumerator, &pDevice->wasapi.notificationClient);
    if (SUCCEEDED(hr)) {
        pDevice->wasapi.pDeviceEnumerator = (ma_ptr)pDeviceEnumerator;
    } else {
        /* Not the end of the world if we fail to register the notification callback. We just won't support automatic stream routing. */
        ma_IMMDeviceEnumerator_Release(pDeviceEnumerator);
    }
#endif

    ma_atomic_bool32_set(&pDevice->wasapi.isStartedCapture,  MA_FALSE);
    ma_atomic_bool32_set(&pDevice->wasapi.isStartedPlayback, MA_FALSE);

    return MA_SUCCESS;
}

static ma_result ma_device__get_available_frames__wasapi(ma_device* pDevice, ma_IAudioClient* pAudioClient, ma_uint32* pFrameCount)
{
    ma_uint32 paddingFramesCount;
    HRESULT hr;
    ma_share_mode shareMode;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pFrameCount != NULL);

    *pFrameCount = 0;

    if ((ma_ptr)pAudioClient != pDevice->wasapi.pAudioClientPlayback && (ma_ptr)pAudioClient != pDevice->wasapi.pAudioClientCapture) {
        return MA_INVALID_OPERATION;
    }

    /*
    I've had a report that GetCurrentPadding() is returning a frame count of 0 which is preventing
    higher level function calls from doing anything because it thinks nothing is available. I have
    taken a look at the documentation and it looks like this is unnecessary in exclusive mode.

    From Microsoft's documentation:

        For an exclusive-mode rendering or capture stream that was initialized with the
        AUDCLNT_STREAMFLAGS_EVENTCALLBACK flag, the client typically has no use for the padding
        value reported by GetCurrentPadding. Instead, the client accesses an entire buffer during
        each processing pass.

    Considering this, I'm going to skip GetCurrentPadding() for exclusive mode and just report the
    entire buffer. This depends on the caller making sure they wait on the event handler.
    */
    shareMode = ((ma_ptr)pAudioClient == pDevice->wasapi.pAudioClientPlayback) ? pDevice->playback.shareMode : pDevice->capture.shareMode;
    if (shareMode == ma_share_mode_shared) {
        /* Shared mode. */
        hr = ma_IAudioClient_GetCurrentPadding(pAudioClient, &paddingFramesCount);
        if (FAILED(hr)) {
            return ma_result_from_HRESULT(hr);
        }

        if ((ma_ptr)pAudioClient == pDevice->wasapi.pAudioClientPlayback) {
            *pFrameCount = pDevice->wasapi.actualBufferSizeInFramesPlayback - paddingFramesCount;
        } else {
            *pFrameCount = paddingFramesCount;
        }
    } else {
        /* Exclusive mode. */
        if ((ma_ptr)pAudioClient == pDevice->wasapi.pAudioClientPlayback) {
            *pFrameCount = pDevice->wasapi.actualBufferSizeInFramesPlayback;
        } else {
            *pFrameCount = pDevice->wasapi.actualBufferSizeInFramesCapture;
        }
    }

    return MA_SUCCESS;
}


static ma_result ma_device_reroute__wasapi(ma_device* pDevice, ma_device_type deviceType)
{
    ma_result result;

    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }

    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "=== CHANGING DEVICE ===\n");

    result = ma_device_reinit__wasapi(pDevice, deviceType);
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[WASAPI] Reinitializing device after route change failed.\n");
        return result;
    }

    ma_device__post_init_setup(pDevice, deviceType);
    ma_device__on_notification_rerouted(pDevice);

    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "=== DEVICE CHANGED ===\n");

    return MA_SUCCESS;
}

static ma_result ma_device_start__wasapi_nolock(ma_device* pDevice)
{
    HRESULT hr;

    if (pDevice->pContext->wasapi.hAvrt) {
        const char* pTaskName = ma_to_usage_string__wasapi(pDevice->wasapi.usage);
        if (pTaskName) {
            DWORD idx = 0;
            pDevice->wasapi.hAvrtHandle = (ma_handle)((MA_PFN_AvSetMmThreadCharacteristicsA)pDevice->pContext->wasapi.AvSetMmThreadCharacteristicsA)(pTaskName, &idx);
        }
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex || pDevice->type == ma_device_type_loopback) {
        hr = ma_IAudioClient_Start((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
        if (FAILED(hr)) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to start internal capture device. HRESULT = %d.", (int)hr);
            return ma_result_from_HRESULT(hr);
        }

        ma_atomic_bool32_set(&pDevice->wasapi.isStartedCapture, MA_TRUE);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        hr = ma_IAudioClient_Start((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback);
        if (FAILED(hr)) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to start internal playback device. HRESULT = %d.", (int)hr);
            return ma_result_from_HRESULT(hr);
        }

        ma_atomic_bool32_set(&pDevice->wasapi.isStartedPlayback, MA_TRUE);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__wasapi(ma_device* pDevice)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    /* Wait for any rerouting to finish before attempting to start the device. */
    ma_mutex_lock(&pDevice->wasapi.rerouteLock);
    {
        result = ma_device_start__wasapi_nolock(pDevice);
    }
    ma_mutex_unlock(&pDevice->wasapi.rerouteLock);

    return result;
}

static ma_result ma_device_stop__wasapi_nolock(ma_device* pDevice)
{
    ma_result result;
    HRESULT hr;

    MA_ASSERT(pDevice != NULL);

    if (pDevice->wasapi.hAvrtHandle) {
        ((MA_PFN_AvRevertMmThreadCharacteristics)pDevice->pContext->wasapi.AvRevertMmThreadcharacteristics)((HANDLE)pDevice->wasapi.hAvrtHandle);
        pDevice->wasapi.hAvrtHandle = NULL;
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex || pDevice->type == ma_device_type_loopback) {
        /* If we have a mapped buffer we need to release it. */
        if (pDevice->wasapi.pMappedBufferCapture != NULL) {
            ma_IAudioCaptureClient_ReleaseBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, pDevice->wasapi.mappedBufferCaptureCap);
            pDevice->wasapi.pMappedBufferCapture = NULL;
            pDevice->wasapi.mappedBufferCaptureCap = 0;
            pDevice->wasapi.mappedBufferCaptureLen = 0;
        }

        hr = ma_IAudioClient_Stop((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to stop internal capture device.");
            return ma_result_from_HRESULT(hr);
        }

        /* The audio client needs to be reset otherwise restarting will fail. */
        hr = ma_IAudioClient_Reset((ma_IAudioClient*)pDevice->wasapi.pAudioClientCapture);
        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to reset internal capture device.");
            return ma_result_from_HRESULT(hr);
        }

        ma_atomic_bool32_set(&pDevice->wasapi.isStartedCapture, MA_FALSE);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        if (pDevice->wasapi.pMappedBufferPlayback != NULL) {
            ma_silence_pcm_frames(
                ma_offset_pcm_frames_ptr(pDevice->wasapi.pMappedBufferPlayback, pDevice->wasapi.mappedBufferPlaybackLen, pDevice->playback.internalFormat, pDevice->playback.internalChannels),
                pDevice->wasapi.mappedBufferPlaybackCap - pDevice->wasapi.mappedBufferPlaybackLen,
                pDevice->playback.internalFormat, pDevice->playback.internalChannels
            );
            ma_IAudioRenderClient_ReleaseBuffer((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient, pDevice->wasapi.mappedBufferPlaybackCap, 0);
            pDevice->wasapi.pMappedBufferPlayback = NULL;
            pDevice->wasapi.mappedBufferPlaybackCap = 0;
            pDevice->wasapi.mappedBufferPlaybackLen = 0;
        }

        /*
        The buffer needs to be drained before stopping the device. Not doing this will result in the last few frames not getting output to
        the speakers. This is a problem for very short sounds because it'll result in a significant portion of it not getting played.
        */
        if (ma_atomic_bool32_get(&pDevice->wasapi.isStartedPlayback)) {
            /* We need to make sure we put a timeout here or else we'll risk getting stuck in a deadlock in some cases. */
            DWORD waitTime = (pDevice->wasapi.actualBufferSizeInFramesPlayback * 1000) / pDevice->playback.internalSampleRate;

            if (pDevice->playback.shareMode == ma_share_mode_exclusive) {
                WaitForSingleObject((HANDLE)pDevice->wasapi.hEventPlayback, waitTime);
            } else {
                ma_uint32 prevFramesAvailablePlayback = (ma_uint32)-1;
                ma_uint32 framesAvailablePlayback;
                for (;;) {
                    result = ma_device__get_available_frames__wasapi(pDevice, (ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback, &framesAvailablePlayback);
                    if (result != MA_SUCCESS) {
                        break;
                    }

                    if (framesAvailablePlayback >= pDevice->wasapi.actualBufferSizeInFramesPlayback) {
                        break;
                    }

                    /*
                    Just a safety check to avoid an infinite loop. If this iteration results in a situation where the number of available frames
                    has not changed, get out of the loop. I don't think this should ever happen, but I think it's nice to have just in case.
                    */
                    if (framesAvailablePlayback == prevFramesAvailablePlayback) {
                        break;
                    }
                    prevFramesAvailablePlayback = framesAvailablePlayback;

                    ResetEvent((HANDLE)pDevice->wasapi.hEventPlayback); /* Manual reset. */
                    WaitForSingleObject((HANDLE)pDevice->wasapi.hEventPlayback, waitTime);
                }
            }
        }

        hr = ma_IAudioClient_Stop((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback);
        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to stop internal playback device.");
            return ma_result_from_HRESULT(hr);
        }

        /* The audio client needs to be reset otherwise restarting will fail. */
        {
            ma_int32 retries = 5;

            while ((hr = ma_IAudioClient_Reset((ma_IAudioClient*)pDevice->wasapi.pAudioClientPlayback)) == MA_AUDCLNT_E_BUFFER_OPERATION_PENDING && retries > 0) {
                ma_sleep(10);
                retries -= 1;
            }
        }

        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to reset internal playback device.");
            return ma_result_from_HRESULT(hr);
        }

        ma_atomic_bool32_set(&pDevice->wasapi.isStartedPlayback, MA_FALSE);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__wasapi(ma_device* pDevice)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    /* Wait for any rerouting to finish before attempting to stop the device. */
    ma_mutex_lock(&pDevice->wasapi.rerouteLock);
    {
        result = ma_device_stop__wasapi_nolock(pDevice);
    }
    ma_mutex_unlock(&pDevice->wasapi.rerouteLock);

    return result;
}


#ifndef MA_WASAPI_WAIT_TIMEOUT_MILLISECONDS
#define MA_WASAPI_WAIT_TIMEOUT_MILLISECONDS 5000
#endif

static ma_result ma_device_read__wasapi(ma_device* pDevice, void* pFrames, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 totalFramesProcessed = 0;

    /*
    When reading, we need to get a buffer and process all of it before releasing it. Because the
    frame count (frameCount) can be different to the size of the buffer, we'll need to cache the
    pointer to the buffer.
    */

    /* Keep running until we've processed the requested number of frames. */
    while (ma_device_get_state(pDevice) == ma_device_state_started && totalFramesProcessed < frameCount) {
        ma_uint32 framesRemaining = frameCount - totalFramesProcessed;

        /* If we have a mapped data buffer, consume that first. */
        if (pDevice->wasapi.pMappedBufferCapture != NULL) {
            /* We have a cached data pointer so consume that before grabbing another one from WASAPI. */
            ma_uint32 framesToProcessNow = framesRemaining;
            if (framesToProcessNow > pDevice->wasapi.mappedBufferCaptureLen) {
                framesToProcessNow = pDevice->wasapi.mappedBufferCaptureLen;
            }

            /* Now just copy the data over to the output buffer. */
            ma_copy_pcm_frames(
                ma_offset_pcm_frames_ptr(pFrames, totalFramesProcessed, pDevice->capture.internalFormat, pDevice->capture.internalChannels),
                ma_offset_pcm_frames_const_ptr(pDevice->wasapi.pMappedBufferCapture, pDevice->wasapi.mappedBufferCaptureCap - pDevice->wasapi.mappedBufferCaptureLen, pDevice->capture.internalFormat, pDevice->capture.internalChannels),
                framesToProcessNow,
                pDevice->capture.internalFormat, pDevice->capture.internalChannels
            );

            totalFramesProcessed                   += framesToProcessNow;
            pDevice->wasapi.mappedBufferCaptureLen -= framesToProcessNow;

            /* If the data buffer has been fully consumed we need to release it. */
            if (pDevice->wasapi.mappedBufferCaptureLen == 0) {
                ma_IAudioCaptureClient_ReleaseBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, pDevice->wasapi.mappedBufferCaptureCap);
                pDevice->wasapi.pMappedBufferCapture   = NULL;
                pDevice->wasapi.mappedBufferCaptureCap = 0;
            }
        } else {
            /* We don't have any cached data pointer, so grab another one. */
            HRESULT hr;
            DWORD flags = 0;

            /* First just ask WASAPI for a data buffer. If it's not available, we'll wait for more. */
            hr = ma_IAudioCaptureClient_GetBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, (BYTE**)&pDevice->wasapi.pMappedBufferCapture, &pDevice->wasapi.mappedBufferCaptureCap, &flags, NULL, NULL);
            if (hr == S_OK) {
                /* We got a data buffer. Continue to the next loop iteration which will then read from the mapped pointer. */
                pDevice->wasapi.mappedBufferCaptureLen = pDevice->wasapi.mappedBufferCaptureCap;

                /*
                There have been reports that indicate that at times the AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY is reported for every
                call to IAudioCaptureClient_GetBuffer() above which results in spamming of the debug messages below. To partially
                work around this, I'm only outputting these messages when MA_DEBUG_OUTPUT is explicitly defined. The better solution
                would be to figure out why the flag is always getting reported.
                */
                #if defined(MA_DEBUG_OUTPUT)
                {
                    if (flags != 0) {
                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Capture Flags: %ld\n", flags);

                        if ((flags & MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY) != 0) {
                            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Data discontinuity (possible overrun). Attempting recovery. mappedBufferCaptureCap=%d\n", pDevice->wasapi.mappedBufferCaptureCap);
                        }
                    }
                }
                #endif

                /* Overrun detection. */
                if ((flags & MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY) != 0) {
                    /* Glitched. Probably due to an overrun. */

                    /*
                    If we got an overrun it probably means we're straddling the end of the buffer. In normal capture
                    mode this is the fault of the client application because they're responsible for ensuring data is
                    processed fast enough. In duplex mode, however, the processing of audio is tied to the playback
                    device, so this can possibly be the result of a timing de-sync.

                    In capture mode we're not going to do any kind of recovery because the real fix is for the client
                    application to process faster. In duplex mode, we'll treat this as a desync and reset the buffers
                    to prevent a never-ending sequence of glitches due to straddling the end of the buffer.
                    */
                    if (pDevice->type == ma_device_type_duplex) {
                        /*
                        Experiment:

                        If we empty out the *entire* buffer we may end up putting ourselves into an underrun position
                        which isn't really any better than the overrun we're probably in right now. Instead we'll just
                        empty out about half.
                        */
                        ma_uint32 i;
                        ma_uint32 periodCount = (pDevice->wasapi.actualBufferSizeInFramesCapture / pDevice->wasapi.periodSizeInFramesCapture);
                        ma_uint32 iterationCount = periodCount / 2;
                        if ((periodCount % 2) > 0) {
                            iterationCount += 1;
                        }

                        for (i = 0; i < iterationCount; i += 1) {
                            hr = ma_IAudioCaptureClient_ReleaseBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, pDevice->wasapi.mappedBufferCaptureCap);
                            if (FAILED(hr)) {
                                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Data discontinuity recovery: IAudioCaptureClient_ReleaseBuffer() failed with %ld.\n", hr);
                                break;
                            }

                            flags = 0;
                            hr = ma_IAudioCaptureClient_GetBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, (BYTE**)&pDevice->wasapi.pMappedBufferCapture, &pDevice->wasapi.mappedBufferCaptureCap, &flags, NULL, NULL);
                            if (hr == MA_AUDCLNT_S_BUFFER_EMPTY || FAILED(hr)) {
                                /*
                                The buffer has been completely emptied or an error occurred. In this case we'll need
                                to reset the state of the mapped buffer which will trigger the next iteration to get
                                a fresh buffer from WASAPI.
                                */
                                pDevice->wasapi.pMappedBufferCapture   = NULL;
                                pDevice->wasapi.mappedBufferCaptureCap = 0;
                                pDevice->wasapi.mappedBufferCaptureLen = 0;

                                if (hr == MA_AUDCLNT_S_BUFFER_EMPTY) {
                                    if ((flags & MA_AUDCLNT_BUFFERFLAGS_DATA_DISCONTINUITY) != 0) {
                                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Data discontinuity recovery: Buffer emptied, and data discontinuity still reported.\n");
                                    } else {
                                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Data discontinuity recovery: Buffer emptied.\n");
                                    }
                                }

                                if (FAILED(hr)) {
                                    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[WASAPI] Data discontinuity recovery: IAudioCaptureClient_GetBuffer() failed with %ld.\n", hr);
                                }

                                break;
                            }
                        }

                        /* If at this point we have a valid buffer mapped, make sure the buffer length is set appropriately. */
                        if (pDevice->wasapi.pMappedBufferCapture != NULL) {
                            pDevice->wasapi.mappedBufferCaptureLen = pDevice->wasapi.mappedBufferCaptureCap;
                        }
                    }
                }

                continue;
            } else {
                if (hr == MA_AUDCLNT_S_BUFFER_EMPTY || hr == MA_AUDCLNT_E_BUFFER_ERROR) {
                    /*
                    No data is available. We need to wait for more. There's two situations to consider
                    here. The first is normal capture mode. If this times out it probably means the
                    microphone isn't delivering data for whatever reason. In this case we'll just
                    abort the read and return whatever we were able to get. The other situations is
                    loopback mode, in which case a timeout probably just means the nothing is playing
                    through the speakers.
                    */

                    /* Experiment: Use a shorter timeout for loopback mode. */
                    DWORD timeoutInMilliseconds = MA_WASAPI_WAIT_TIMEOUT_MILLISECONDS;
                    if (pDevice->type == ma_device_type_loopback) {
                        timeoutInMilliseconds = 10;
                    }

                    if (WaitForSingleObject((HANDLE)pDevice->wasapi.hEventCapture, timeoutInMilliseconds) != WAIT_OBJECT_0) {
                        if (pDevice->type == ma_device_type_loopback) {
                            continue;   /* Keep waiting in loopback mode. */
                        } else {
                            result = MA_ERROR;
                            break;      /* Wait failed. */
                        }
                    }

                    /* At this point we should be able to loop back to the start of the loop and try retrieving a data buffer again. */
                } else {
                    /* An error occurred and we need to abort. */
                    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to retrieve internal buffer from capture device in preparation for reading from the device. HRESULT = %d. Stopping device.\n", (int)hr);
                    result = ma_result_from_HRESULT(hr);
                    break;
                }
            }
        }
    }

    /*
    If we were unable to process the entire requested frame count, but we still have a mapped buffer,
    there's a good chance either an error occurred or the device was stopped mid-read. In this case
    we'll need to make sure the buffer is released.
    */
    if (totalFramesProcessed < frameCount && pDevice->wasapi.pMappedBufferCapture != NULL) {
        ma_IAudioCaptureClient_ReleaseBuffer((ma_IAudioCaptureClient*)pDevice->wasapi.pCaptureClient, pDevice->wasapi.mappedBufferCaptureCap);
        pDevice->wasapi.pMappedBufferCapture   = NULL;
        pDevice->wasapi.mappedBufferCaptureCap = 0;
        pDevice->wasapi.mappedBufferCaptureLen = 0;
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesProcessed;
    }

    return result;
}

static ma_result ma_device_write__wasapi(ma_device* pDevice, const void* pFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 totalFramesProcessed = 0;

    /* Keep writing to the device until it's stopped or we've consumed all of our input. */
    while (ma_device_get_state(pDevice) == ma_device_state_started && totalFramesProcessed < frameCount) {
        ma_uint32 framesRemaining = frameCount - totalFramesProcessed;

        /*
        We're going to do this in a similar way to capture. We'll first check if the cached data pointer
        is valid, and if so, read from that. Otherwise We will call IAudioRenderClient_GetBuffer() with
        a requested buffer size equal to our actual period size. If it returns AUDCLNT_E_BUFFER_TOO_LARGE
        it means we need to wait for some data to become available.
        */
        if (pDevice->wasapi.pMappedBufferPlayback != NULL) {
            /* We still have some space available in the mapped data buffer. Write to it. */
            ma_uint32 framesToProcessNow = framesRemaining;
            if (framesToProcessNow > (pDevice->wasapi.mappedBufferPlaybackCap - pDevice->wasapi.mappedBufferPlaybackLen)) {
                framesToProcessNow = (pDevice->wasapi.mappedBufferPlaybackCap - pDevice->wasapi.mappedBufferPlaybackLen);
            }

            /* Now just copy the data over to the output buffer. */
            ma_copy_pcm_frames(
                ma_offset_pcm_frames_ptr(pDevice->wasapi.pMappedBufferPlayback, pDevice->wasapi.mappedBufferPlaybackLen, pDevice->playback.internalFormat, pDevice->playback.internalChannels),
                ma_offset_pcm_frames_const_ptr(pFrames, totalFramesProcessed, pDevice->playback.internalFormat, pDevice->playback.internalChannels),
                framesToProcessNow,
                pDevice->playback.internalFormat, pDevice->playback.internalChannels
            );

            totalFramesProcessed                    += framesToProcessNow;
            pDevice->wasapi.mappedBufferPlaybackLen += framesToProcessNow;

            /* If the data buffer has been fully consumed we need to release it. */
            if (pDevice->wasapi.mappedBufferPlaybackLen == pDevice->wasapi.mappedBufferPlaybackCap) {
                ma_IAudioRenderClient_ReleaseBuffer((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient, pDevice->wasapi.mappedBufferPlaybackCap, 0);
                pDevice->wasapi.pMappedBufferPlayback   = NULL;
                pDevice->wasapi.mappedBufferPlaybackCap = 0;
                pDevice->wasapi.mappedBufferPlaybackLen = 0;

                /*
                In exclusive mode we need to wait here. Exclusive mode is weird because GetBuffer() never
                seems to return AUDCLNT_E_BUFFER_TOO_LARGE, which is what we normally use to determine
                whether or not we need to wait for more data.
                */
                if (pDevice->playback.shareMode == ma_share_mode_exclusive) {
                    if (WaitForSingleObject((HANDLE)pDevice->wasapi.hEventPlayback, MA_WASAPI_WAIT_TIMEOUT_MILLISECONDS) != WAIT_OBJECT_0) {
                        result = MA_ERROR;
                        break;   /* Wait failed. Probably timed out. */
                    }
                }
            }
        } else {
            /* We don't have a mapped data buffer so we'll need to get one. */
            HRESULT hr;
            ma_uint32 bufferSizeInFrames;

            /* Special rules for exclusive mode. */
            if (pDevice->playback.shareMode == ma_share_mode_exclusive) {
                bufferSizeInFrames = pDevice->wasapi.actualBufferSizeInFramesPlayback;
            } else {
                bufferSizeInFrames = pDevice->wasapi.periodSizeInFramesPlayback;
            }

            hr = ma_IAudioRenderClient_GetBuffer((ma_IAudioRenderClient*)pDevice->wasapi.pRenderClient, bufferSizeInFrames, (BYTE**)&pDevice->wasapi.pMappedBufferPlayback);
            if (hr == S_OK) {
                /* We have data available. */
                pDevice->wasapi.mappedBufferPlaybackCap = bufferSizeInFrames;
                pDevice->wasapi.mappedBufferPlaybackLen = 0;
            } else {
                if (hr == MA_AUDCLNT_E_BUFFER_TOO_LARGE || hr == MA_AUDCLNT_E_BUFFER_ERROR) {
                    /* Not enough data available. We need to wait for more. */
                    if (WaitForSingleObject((HANDLE)pDevice->wasapi.hEventPlayback, MA_WASAPI_WAIT_TIMEOUT_MILLISECONDS) != WAIT_OBJECT_0) {
                        result = MA_ERROR;
                        break;   /* Wait failed. Probably timed out. */
                    }
                } else {
                    /* Some error occurred. We'll need to abort. */
                    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WASAPI] Failed to retrieve internal buffer from playback device in preparation for writing to the device. HRESULT = %d. Stopping device.\n", (int)hr);
                    result = ma_result_from_HRESULT(hr);
                    break;
                }
            }
        }
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = totalFramesProcessed;
    }

    return result;
}

static ma_result ma_device_data_loop_wakeup__wasapi(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex || pDevice->type == ma_device_type_loopback) {
        SetEvent((HANDLE)pDevice->wasapi.hEventCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        SetEvent((HANDLE)pDevice->wasapi.hEventPlayback);
    }

    return MA_SUCCESS;
}


static ma_result ma_context_uninit__wasapi(ma_context* pContext)
{
    ma_context_command__wasapi cmd = ma_context_init_command__wasapi(MA_CONTEXT_COMMAND_QUIT__WASAPI);

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_wasapi);

    ma_context_post_command__wasapi(pContext, &cmd);
    ma_thread_wait(&pContext->wasapi.commandThread);

    if (pContext->wasapi.hAvrt) {
        ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hAvrt);
        pContext->wasapi.hAvrt = NULL;
    }

    #if defined(MA_WIN32_UWP)
    {
        if (pContext->wasapi.hMMDevapi) {
            ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi);
            pContext->wasapi.hMMDevapi = NULL;
        }
    }
    #endif

    /* Only after the thread has been terminated can we uninitialize the sync objects for the command thread. */
    ma_semaphore_uninit(&pContext->wasapi.commandSem);
    ma_mutex_uninit(&pContext->wasapi.commandLock);

    return MA_SUCCESS;
}

static ma_result ma_context_init__wasapi(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    ma_result result = MA_SUCCESS;

    MA_ASSERT(pContext != NULL);

    (void)pConfig;

#ifdef MA_WIN32_DESKTOP
    /*
    WASAPI is only supported in Vista SP1 and newer. The reason for SP1 and not the base version of Vista is that event-driven
    exclusive mode does not work until SP1.

    Unfortunately older compilers don't define these functions so we need to dynamically load them in order to avoid a link error.
    */
    {
        ma_OSVERSIONINFOEXW osvi;
        ma_handle kernel32DLL;
        ma_PFNVerifyVersionInfoW _VerifyVersionInfoW;
        ma_PFNVerSetConditionMask _VerSetConditionMask;

        kernel32DLL = ma_dlopen(ma_context_get_log(pContext), "kernel32.dll");
        if (kernel32DLL == NULL) {
            return MA_NO_BACKEND;
        }

        _VerifyVersionInfoW  = (ma_PFNVerifyVersionInfoW )ma_dlsym(ma_context_get_log(pContext), kernel32DLL, "VerifyVersionInfoW");
        _VerSetConditionMask = (ma_PFNVerSetConditionMask)ma_dlsym(ma_context_get_log(pContext), kernel32DLL, "VerSetConditionMask");
        if (_VerifyVersionInfoW == NULL || _VerSetConditionMask == NULL) {
            ma_dlclose(ma_context_get_log(pContext), kernel32DLL);
            return MA_NO_BACKEND;
        }

        MA_ZERO_OBJECT(&osvi);
        osvi.dwOSVersionInfoSize = sizeof(osvi);
        osvi.dwMajorVersion = ((MA_WIN32_WINNT_VISTA >> 8) & 0xFF);
        osvi.dwMinorVersion = ((MA_WIN32_WINNT_VISTA >> 0) & 0xFF);
        osvi.wServicePackMajor = 1;
        if (_VerifyVersionInfoW(&osvi, MA_VER_MAJORVERSION | MA_VER_MINORVERSION | MA_VER_SERVICEPACKMAJOR, _VerSetConditionMask(_VerSetConditionMask(_VerSetConditionMask(0, MA_VER_MAJORVERSION, MA_VER_GREATER_EQUAL), MA_VER_MINORVERSION, MA_VER_GREATER_EQUAL), MA_VER_SERVICEPACKMAJOR, MA_VER_GREATER_EQUAL))) {
            result = MA_SUCCESS;
        } else {
            result = MA_NO_BACKEND;
        }

        ma_dlclose(ma_context_get_log(pContext), kernel32DLL);
    }
#endif

    if (result != MA_SUCCESS) {
        return result;
    }

    MA_ZERO_OBJECT(&pContext->wasapi);


    #if defined(MA_WIN32_UWP)
    {
        /* Link to mmdevapi so we can get access to ActivateAudioInterfaceAsync(). */
        pContext->wasapi.hMMDevapi = ma_dlopen(ma_context_get_log(pContext), "mmdevapi.dll");
        if (pContext->wasapi.hMMDevapi) {
            pContext->wasapi.ActivateAudioInterfaceAsync = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi, "ActivateAudioInterfaceAsync");
            if (pContext->wasapi.ActivateAudioInterfaceAsync == NULL) {
                ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hMMDevapi);
                return MA_NO_BACKEND;   /* ActivateAudioInterfaceAsync() could not be loaded. */
            }
        } else {
            return MA_NO_BACKEND;   /* Failed to load mmdevapi.dll which is required for ActivateAudioInterfaceAsync() */
        }
    }
    #endif

    /* Optionally use the Avrt API to specify the audio thread's latency sensitivity requirements */
    pContext->wasapi.hAvrt = ma_dlopen(ma_context_get_log(pContext), "avrt.dll");
    if (pContext->wasapi.hAvrt) {
        pContext->wasapi.AvSetMmThreadCharacteristicsA   = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvSetMmThreadCharacteristicsA");
        pContext->wasapi.AvRevertMmThreadcharacteristics = ma_dlsym(ma_context_get_log(pContext), pContext->wasapi.hAvrt, "AvRevertMmThreadCharacteristics");

        /* If either function could not be found, disable use of avrt entirely. */
        if (!pContext->wasapi.AvSetMmThreadCharacteristicsA || !pContext->wasapi.AvRevertMmThreadcharacteristics) {
            pContext->wasapi.AvSetMmThreadCharacteristicsA   = NULL;
            pContext->wasapi.AvRevertMmThreadcharacteristics = NULL;
            ma_dlclose(ma_context_get_log(pContext), pContext->wasapi.hAvrt);
            pContext->wasapi.hAvrt = NULL;
        }
    }


    /*
    Annoyingly, WASAPI does not allow you to release an IAudioClient object from a different thread
    than the one that retrieved it with GetService(). This can result in a deadlock in two
    situations:

        1) When calling ma_device_uninit() from a different thread to ma_device_init(); and
        2) When uninitializing and reinitializing the internal IAudioClient object in response to
           automatic stream routing.

    We could define ma_device_uninit() such that it must be called on the same thread as
    ma_device_init(). We could also just not release the IAudioClient when performing automatic
    stream routing to avoid the deadlock. Neither of these are acceptable solutions in my view so
    we're going to have to work around this with a worker thread. This is not ideal, but I can't
    think of a better way to do this.

    More information about this can be found here:

        https://docs.microsoft.com/en-us/windows/win32/api/audioclient/nn-audioclient-iaudiorenderclient

    Note this section:

        When releasing an IAudioRenderClient interface instance, the client must call the interface's
        Release method from the same thread as the call to IAudioClient::GetService that created the
        object.
    */
    {
        result = ma_mutex_init(&pContext->wasapi.commandLock);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_semaphore_init(0, &pContext->wasapi.commandSem);
        if (result != MA_SUCCESS) {
            ma_mutex_uninit(&pContext->wasapi.commandLock);
            return result;
        }

        result = ma_thread_create(&pContext->wasapi.commandThread, ma_thread_priority_normal, 0, ma_context_command_thread__wasapi, pContext, &pContext->allocationCallbacks);
        if (result != MA_SUCCESS) {
            ma_semaphore_uninit(&pContext->wasapi.commandSem);
            ma_mutex_uninit(&pContext->wasapi.commandLock);
            return result;
        }
    }


    pCallbacks->onContextInit             = ma_context_init__wasapi;
    pCallbacks->onContextUninit           = ma_context_uninit__wasapi;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__wasapi;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__wasapi;
    pCallbacks->onDeviceInit              = ma_device_init__wasapi;
    pCallbacks->onDeviceUninit            = ma_device_uninit__wasapi;
    pCallbacks->onDeviceStart             = ma_device_start__wasapi;
    pCallbacks->onDeviceStop              = ma_device_stop__wasapi;
    pCallbacks->onDeviceRead              = ma_device_read__wasapi;
    pCallbacks->onDeviceWrite             = ma_device_write__wasapi;
    pCallbacks->onDeviceDataLoop          = NULL;
    pCallbacks->onDeviceDataLoopWakeup    = ma_device_data_loop_wakeup__wasapi;

    return MA_SUCCESS;
}
#endif

/******************************************************************************

DirectSound Backend

******************************************************************************/
#ifdef MA_HAS_DSOUND
/*#include <dsound.h>*/

/*static const GUID MA_GUID_IID_DirectSoundNotify = {0xb0210783, 0x89cd, 0x11d0, {0xaf, 0x08, 0x00, 0xa0, 0xc9, 0x25, 0xcd, 0x16}};*/

/* miniaudio only uses priority or exclusive modes. */
#define MA_DSSCL_NORMAL                 1
#define MA_DSSCL_PRIORITY               2
#define MA_DSSCL_EXCLUSIVE              3
#define MA_DSSCL_WRITEPRIMARY           4

#define MA_DSCAPS_PRIMARYMONO           0x00000001
#define MA_DSCAPS_PRIMARYSTEREO         0x00000002
#define MA_DSCAPS_PRIMARY8BIT           0x00000004
#define MA_DSCAPS_PRIMARY16BIT          0x00000008
#define MA_DSCAPS_CONTINUOUSRATE        0x00000010
#define MA_DSCAPS_EMULDRIVER            0x00000020
#define MA_DSCAPS_CERTIFIED             0x00000040
#define MA_DSCAPS_SECONDARYMONO         0x00000100
#define MA_DSCAPS_SECONDARYSTEREO       0x00000200
#define MA_DSCAPS_SECONDARY8BIT         0x00000400
#define MA_DSCAPS_SECONDARY16BIT        0x00000800

#define MA_DSBCAPS_PRIMARYBUFFER        0x00000001
#define MA_DSBCAPS_STATIC               0x00000002
#define MA_DSBCAPS_LOCHARDWARE          0x00000004
#define MA_DSBCAPS_LOCSOFTWARE          0x00000008
#define MA_DSBCAPS_CTRL3D               0x00000010
#define MA_DSBCAPS_CTRLFREQUENCY        0x00000020
#define MA_DSBCAPS_CTRLPAN              0x00000040
#define MA_DSBCAPS_CTRLVOLUME           0x00000080
#define MA_DSBCAPS_CTRLPOSITIONNOTIFY   0x00000100
#define MA_DSBCAPS_CTRLFX               0x00000200
#define MA_DSBCAPS_STICKYFOCUS          0x00004000
#define MA_DSBCAPS_GLOBALFOCUS          0x00008000
#define MA_DSBCAPS_GETCURRENTPOSITION2  0x00010000
#define MA_DSBCAPS_MUTE3DATMAXDISTANCE  0x00020000
#define MA_DSBCAPS_LOCDEFER             0x00040000
#define MA_DSBCAPS_TRUEPLAYPOSITION     0x00080000

#define MA_DSBPLAY_LOOPING              0x00000001
#define MA_DSBPLAY_LOCHARDWARE          0x00000002
#define MA_DSBPLAY_LOCSOFTWARE          0x00000004
#define MA_DSBPLAY_TERMINATEBY_TIME     0x00000008
#define MA_DSBPLAY_TERMINATEBY_DISTANCE 0x00000010
#define MA_DSBPLAY_TERMINATEBY_PRIORITY 0x00000020

#define MA_DSBSTATUS_PLAYING            0x00000001
#define MA_DSBSTATUS_BUFFERLOST         0x00000002
#define MA_DSBSTATUS_LOOPING            0x00000004
#define MA_DSBSTATUS_LOCHARDWARE        0x00000008
#define MA_DSBSTATUS_LOCSOFTWARE        0x00000010
#define MA_DSBSTATUS_TERMINATED         0x00000020

#define MA_DSCBSTART_LOOPING            0x00000001

typedef struct
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwBufferBytes;
    DWORD dwReserved;
    MA_WAVEFORMATEX* lpwfxFormat;
    GUID guid3DAlgorithm;
} MA_DSBUFFERDESC;

typedef struct
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwBufferBytes;
    DWORD dwReserved;
    MA_WAVEFORMATEX* lpwfxFormat;
    DWORD dwFXCount;
    void* lpDSCFXDesc;  /* <-- miniaudio doesn't use this, so set to void*. */
} MA_DSCBUFFERDESC;

typedef struct
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwMinSecondarySampleRate;
    DWORD dwMaxSecondarySampleRate;
    DWORD dwPrimaryBuffers;
    DWORD dwMaxHwMixingAllBuffers;
    DWORD dwMaxHwMixingStaticBuffers;
    DWORD dwMaxHwMixingStreamingBuffers;
    DWORD dwFreeHwMixingAllBuffers;
    DWORD dwFreeHwMixingStaticBuffers;
    DWORD dwFreeHwMixingStreamingBuffers;
    DWORD dwMaxHw3DAllBuffers;
    DWORD dwMaxHw3DStaticBuffers;
    DWORD dwMaxHw3DStreamingBuffers;
    DWORD dwFreeHw3DAllBuffers;
    DWORD dwFreeHw3DStaticBuffers;
    DWORD dwFreeHw3DStreamingBuffers;
    DWORD dwTotalHwMemBytes;
    DWORD dwFreeHwMemBytes;
    DWORD dwMaxContigFreeHwMemBytes;
    DWORD dwUnlockTransferRateHwBuffers;
    DWORD dwPlayCpuOverheadSwBuffers;
    DWORD dwReserved1;
    DWORD dwReserved2;
} MA_DSCAPS;

typedef struct
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwBufferBytes;
    DWORD dwUnlockTransferRate;
    DWORD dwPlayCpuOverhead;
} MA_DSBCAPS;

typedef struct
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwFormats;
    DWORD dwChannels;
} MA_DSCCAPS;

typedef struct
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwBufferBytes;
    DWORD dwReserved;
} MA_DSCBCAPS;

typedef struct
{
    DWORD  dwOffset;
    HANDLE hEventNotify;
} MA_DSBPOSITIONNOTIFY;

typedef struct ma_IDirectSound              ma_IDirectSound;
typedef struct ma_IDirectSoundBuffer        ma_IDirectSoundBuffer;
typedef struct ma_IDirectSoundCapture       ma_IDirectSoundCapture;
typedef struct ma_IDirectSoundCaptureBuffer ma_IDirectSoundCaptureBuffer;
typedef struct ma_IDirectSoundNotify        ma_IDirectSoundNotify;


/*
COM objects. The way these work is that you have a vtable (a list of function pointers, kind of
like how C++ works internally), and then you have a structure with a single member, which is a
pointer to the vtable. The vtable is where the methods of the object are defined. Methods need
to be in a specific order, and parent classes need to have their methods declared first.
*/

/* IDirectSound */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IDirectSound* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IDirectSound* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IDirectSound* pThis);

    /* IDirectSound */
    HRESULT (STDMETHODCALLTYPE * CreateSoundBuffer)   (ma_IDirectSound* pThis, const MA_DSBUFFERDESC* pDSBufferDesc, ma_IDirectSoundBuffer** ppDSBuffer, void* pUnkOuter);
    HRESULT (STDMETHODCALLTYPE * GetCaps)             (ma_IDirectSound* pThis, MA_DSCAPS* pDSCaps);
    HRESULT (STDMETHODCALLTYPE * DuplicateSoundBuffer)(ma_IDirectSound* pThis, ma_IDirectSoundBuffer* pDSBufferOriginal, ma_IDirectSoundBuffer** ppDSBufferDuplicate);
    HRESULT (STDMETHODCALLTYPE * SetCooperativeLevel) (ma_IDirectSound* pThis, HWND hwnd, DWORD dwLevel);
    HRESULT (STDMETHODCALLTYPE * Compact)             (ma_IDirectSound* pThis);
    HRESULT (STDMETHODCALLTYPE * GetSpeakerConfig)    (ma_IDirectSound* pThis, DWORD* pSpeakerConfig);
    HRESULT (STDMETHODCALLTYPE * SetSpeakerConfig)    (ma_IDirectSound* pThis, DWORD dwSpeakerConfig);
    HRESULT (STDMETHODCALLTYPE * Initialize)          (ma_IDirectSound* pThis, const GUID* pGuidDevice);
} ma_IDirectSoundVtbl;
struct ma_IDirectSound
{
    ma_IDirectSoundVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IDirectSound_QueryInterface(ma_IDirectSound* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IDirectSound_AddRef(ma_IDirectSound* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IDirectSound_Release(ma_IDirectSound* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IDirectSound_CreateSoundBuffer(ma_IDirectSound* pThis, const MA_DSBUFFERDESC* pDSBufferDesc, ma_IDirectSoundBuffer** ppDSBuffer, void* pUnkOuter) { return pThis->lpVtbl->CreateSoundBuffer(pThis, pDSBufferDesc, ppDSBuffer, pUnkOuter); }
static MA_INLINE HRESULT ma_IDirectSound_GetCaps(ma_IDirectSound* pThis, MA_DSCAPS* pDSCaps)                            { return pThis->lpVtbl->GetCaps(pThis, pDSCaps); }
static MA_INLINE HRESULT ma_IDirectSound_DuplicateSoundBuffer(ma_IDirectSound* pThis, ma_IDirectSoundBuffer* pDSBufferOriginal, ma_IDirectSoundBuffer** ppDSBufferDuplicate) { return pThis->lpVtbl->DuplicateSoundBuffer(pThis, pDSBufferOriginal, ppDSBufferDuplicate); }
static MA_INLINE HRESULT ma_IDirectSound_SetCooperativeLevel(ma_IDirectSound* pThis, HWND hwnd, DWORD dwLevel)          { return pThis->lpVtbl->SetCooperativeLevel(pThis, hwnd, dwLevel); }
static MA_INLINE HRESULT ma_IDirectSound_Compact(ma_IDirectSound* pThis)                                                { return pThis->lpVtbl->Compact(pThis); }
static MA_INLINE HRESULT ma_IDirectSound_GetSpeakerConfig(ma_IDirectSound* pThis, DWORD* pSpeakerConfig)                { return pThis->lpVtbl->GetSpeakerConfig(pThis, pSpeakerConfig); }
static MA_INLINE HRESULT ma_IDirectSound_SetSpeakerConfig(ma_IDirectSound* pThis, DWORD dwSpeakerConfig)                { return pThis->lpVtbl->SetSpeakerConfig(pThis, dwSpeakerConfig); }
static MA_INLINE HRESULT ma_IDirectSound_Initialize(ma_IDirectSound* pThis, const GUID* pGuidDevice)                    { return pThis->lpVtbl->Initialize(pThis, pGuidDevice); }


/* IDirectSoundBuffer */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IDirectSoundBuffer* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IDirectSoundBuffer* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IDirectSoundBuffer* pThis);

    /* IDirectSoundBuffer */
    HRESULT (STDMETHODCALLTYPE * GetCaps)           (ma_IDirectSoundBuffer* pThis, MA_DSBCAPS* pDSBufferCaps);
    HRESULT (STDMETHODCALLTYPE * GetCurrentPosition)(ma_IDirectSoundBuffer* pThis, DWORD* pCurrentPlayCursor, DWORD* pCurrentWriteCursor);
    HRESULT (STDMETHODCALLTYPE * GetFormat)         (ma_IDirectSoundBuffer* pThis, MA_WAVEFORMATEX* pFormat, DWORD dwSizeAllocated, DWORD* pSizeWritten);
    HRESULT (STDMETHODCALLTYPE * GetVolume)         (ma_IDirectSoundBuffer* pThis, LONG* pVolume);
    HRESULT (STDMETHODCALLTYPE * GetPan)            (ma_IDirectSoundBuffer* pThis, LONG* pPan);
    HRESULT (STDMETHODCALLTYPE * GetFrequency)      (ma_IDirectSoundBuffer* pThis, DWORD* pFrequency);
    HRESULT (STDMETHODCALLTYPE * GetStatus)         (ma_IDirectSoundBuffer* pThis, DWORD* pStatus);
    HRESULT (STDMETHODCALLTYPE * Initialize)        (ma_IDirectSoundBuffer* pThis, ma_IDirectSound* pDirectSound, const MA_DSBUFFERDESC* pDSBufferDesc);
    HRESULT (STDMETHODCALLTYPE * Lock)              (ma_IDirectSoundBuffer* pThis, DWORD dwOffset, DWORD dwBytes, void** ppAudioPtr1, DWORD* pAudioBytes1, void** ppAudioPtr2, DWORD* pAudioBytes2, DWORD dwFlags);
    HRESULT (STDMETHODCALLTYPE * Play)              (ma_IDirectSoundBuffer* pThis, DWORD dwReserved1, DWORD dwPriority, DWORD dwFlags);
    HRESULT (STDMETHODCALLTYPE * SetCurrentPosition)(ma_IDirectSoundBuffer* pThis, DWORD dwNewPosition);
    HRESULT (STDMETHODCALLTYPE * SetFormat)         (ma_IDirectSoundBuffer* pThis, const MA_WAVEFORMATEX* pFormat);
    HRESULT (STDMETHODCALLTYPE * SetVolume)         (ma_IDirectSoundBuffer* pThis, LONG volume);
    HRESULT (STDMETHODCALLTYPE * SetPan)            (ma_IDirectSoundBuffer* pThis, LONG pan);
    HRESULT (STDMETHODCALLTYPE * SetFrequency)      (ma_IDirectSoundBuffer* pThis, DWORD dwFrequency);
    HRESULT (STDMETHODCALLTYPE * Stop)              (ma_IDirectSoundBuffer* pThis);
    HRESULT (STDMETHODCALLTYPE * Unlock)            (ma_IDirectSoundBuffer* pThis, void* pAudioPtr1, DWORD dwAudioBytes1, void* pAudioPtr2, DWORD dwAudioBytes2);
    HRESULT (STDMETHODCALLTYPE * Restore)           (ma_IDirectSoundBuffer* pThis);
} ma_IDirectSoundBufferVtbl;
struct ma_IDirectSoundBuffer
{
    ma_IDirectSoundBufferVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IDirectSoundBuffer_QueryInterface(ma_IDirectSoundBuffer* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IDirectSoundBuffer_AddRef(ma_IDirectSoundBuffer* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IDirectSoundBuffer_Release(ma_IDirectSoundBuffer* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetCaps(ma_IDirectSoundBuffer* pThis, MA_DSBCAPS* pDSBufferCaps)                     { return pThis->lpVtbl->GetCaps(pThis, pDSBufferCaps); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetCurrentPosition(ma_IDirectSoundBuffer* pThis, DWORD* pCurrentPlayCursor, DWORD* pCurrentWriteCursor) { return pThis->lpVtbl->GetCurrentPosition(pThis, pCurrentPlayCursor, pCurrentWriteCursor); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetFormat(ma_IDirectSoundBuffer* pThis, MA_WAVEFORMATEX* pFormat, DWORD dwSizeAllocated, DWORD* pSizeWritten) { return pThis->lpVtbl->GetFormat(pThis, pFormat, dwSizeAllocated, pSizeWritten); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetVolume(ma_IDirectSoundBuffer* pThis, LONG* pVolume)                               { return pThis->lpVtbl->GetVolume(pThis, pVolume); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetPan(ma_IDirectSoundBuffer* pThis, LONG* pPan)                                     { return pThis->lpVtbl->GetPan(pThis, pPan); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetFrequency(ma_IDirectSoundBuffer* pThis, DWORD* pFrequency)                        { return pThis->lpVtbl->GetFrequency(pThis, pFrequency); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_GetStatus(ma_IDirectSoundBuffer* pThis, DWORD* pStatus)                              { return pThis->lpVtbl->GetStatus(pThis, pStatus); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_Initialize(ma_IDirectSoundBuffer* pThis, ma_IDirectSound* pDirectSound, const MA_DSBUFFERDESC* pDSBufferDesc) { return pThis->lpVtbl->Initialize(pThis, pDirectSound, pDSBufferDesc); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_Lock(ma_IDirectSoundBuffer* pThis, DWORD dwOffset, DWORD dwBytes, void** ppAudioPtr1, DWORD* pAudioBytes1, void** ppAudioPtr2, DWORD* pAudioBytes2, DWORD dwFlags) { return pThis->lpVtbl->Lock(pThis, dwOffset, dwBytes, ppAudioPtr1, pAudioBytes1, ppAudioPtr2, pAudioBytes2, dwFlags); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_Play(ma_IDirectSoundBuffer* pThis, DWORD dwReserved1, DWORD dwPriority, DWORD dwFlags) { return pThis->lpVtbl->Play(pThis, dwReserved1, dwPriority, dwFlags); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_SetCurrentPosition(ma_IDirectSoundBuffer* pThis, DWORD dwNewPosition)                { return pThis->lpVtbl->SetCurrentPosition(pThis, dwNewPosition); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_SetFormat(ma_IDirectSoundBuffer* pThis, const MA_WAVEFORMATEX* pFormat)              { return pThis->lpVtbl->SetFormat(pThis, pFormat); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_SetVolume(ma_IDirectSoundBuffer* pThis, LONG volume)                                 { return pThis->lpVtbl->SetVolume(pThis, volume); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_SetPan(ma_IDirectSoundBuffer* pThis, LONG pan)                                       { return pThis->lpVtbl->SetPan(pThis, pan); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_SetFrequency(ma_IDirectSoundBuffer* pThis, DWORD dwFrequency)                        { return pThis->lpVtbl->SetFrequency(pThis, dwFrequency); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_Stop(ma_IDirectSoundBuffer* pThis)                                                   { return pThis->lpVtbl->Stop(pThis); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_Unlock(ma_IDirectSoundBuffer* pThis, void* pAudioPtr1, DWORD dwAudioBytes1, void* pAudioPtr2, DWORD dwAudioBytes2) { return pThis->lpVtbl->Unlock(pThis, pAudioPtr1, dwAudioBytes1, pAudioPtr2, dwAudioBytes2); }
static MA_INLINE HRESULT ma_IDirectSoundBuffer_Restore(ma_IDirectSoundBuffer* pThis)                                                { return pThis->lpVtbl->Restore(pThis); }


/* IDirectSoundCapture */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IDirectSoundCapture* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IDirectSoundCapture* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IDirectSoundCapture* pThis);

    /* IDirectSoundCapture */
    HRESULT (STDMETHODCALLTYPE * CreateCaptureBuffer)(ma_IDirectSoundCapture* pThis, const MA_DSCBUFFERDESC* pDSCBufferDesc, ma_IDirectSoundCaptureBuffer** ppDSCBuffer, void* pUnkOuter);
    HRESULT (STDMETHODCALLTYPE * GetCaps)            (ma_IDirectSoundCapture* pThis, MA_DSCCAPS* pDSCCaps);
    HRESULT (STDMETHODCALLTYPE * Initialize)         (ma_IDirectSoundCapture* pThis, const GUID* pGuidDevice);
} ma_IDirectSoundCaptureVtbl;
struct ma_IDirectSoundCapture
{
    ma_IDirectSoundCaptureVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IDirectSoundCapture_QueryInterface     (ma_IDirectSoundCapture* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IDirectSoundCapture_AddRef             (ma_IDirectSoundCapture* pThis)                                    { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IDirectSoundCapture_Release            (ma_IDirectSoundCapture* pThis)                                    { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IDirectSoundCapture_CreateCaptureBuffer(ma_IDirectSoundCapture* pThis, const MA_DSCBUFFERDESC* pDSCBufferDesc, ma_IDirectSoundCaptureBuffer** ppDSCBuffer, void* pUnkOuter) { return pThis->lpVtbl->CreateCaptureBuffer(pThis, pDSCBufferDesc, ppDSCBuffer, pUnkOuter); }
static MA_INLINE HRESULT ma_IDirectSoundCapture_GetCaps            (ma_IDirectSoundCapture* pThis, MA_DSCCAPS* pDSCCaps)              { return pThis->lpVtbl->GetCaps(pThis, pDSCCaps); }
static MA_INLINE HRESULT ma_IDirectSoundCapture_Initialize         (ma_IDirectSoundCapture* pThis, const GUID* pGuidDevice)           { return pThis->lpVtbl->Initialize(pThis, pGuidDevice); }


/* IDirectSoundCaptureBuffer */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IDirectSoundCaptureBuffer* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IDirectSoundCaptureBuffer* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IDirectSoundCaptureBuffer* pThis);

    /* IDirectSoundCaptureBuffer */
    HRESULT (STDMETHODCALLTYPE * GetCaps)           (ma_IDirectSoundCaptureBuffer* pThis, MA_DSCBCAPS* pDSCBCaps);
    HRESULT (STDMETHODCALLTYPE * GetCurrentPosition)(ma_IDirectSoundCaptureBuffer* pThis, DWORD* pCapturePosition, DWORD* pReadPosition);
    HRESULT (STDMETHODCALLTYPE * GetFormat)         (ma_IDirectSoundCaptureBuffer* pThis, MA_WAVEFORMATEX* pFormat, DWORD dwSizeAllocated, DWORD* pSizeWritten);
    HRESULT (STDMETHODCALLTYPE * GetStatus)         (ma_IDirectSoundCaptureBuffer* pThis, DWORD* pStatus);
    HRESULT (STDMETHODCALLTYPE * Initialize)        (ma_IDirectSoundCaptureBuffer* pThis, ma_IDirectSoundCapture* pDirectSoundCapture, const MA_DSCBUFFERDESC* pDSCBufferDesc);
    HRESULT (STDMETHODCALLTYPE * Lock)              (ma_IDirectSoundCaptureBuffer* pThis, DWORD dwOffset, DWORD dwBytes, void** ppAudioPtr1, DWORD* pAudioBytes1, void** ppAudioPtr2, DWORD* pAudioBytes2, DWORD dwFlags);
    HRESULT (STDMETHODCALLTYPE * Start)             (ma_IDirectSoundCaptureBuffer* pThis, DWORD dwFlags);
    HRESULT (STDMETHODCALLTYPE * Stop)              (ma_IDirectSoundCaptureBuffer* pThis);
    HRESULT (STDMETHODCALLTYPE * Unlock)            (ma_IDirectSoundCaptureBuffer* pThis, void* pAudioPtr1, DWORD dwAudioBytes1, void* pAudioPtr2, DWORD dwAudioBytes2);
} ma_IDirectSoundCaptureBufferVtbl;
struct ma_IDirectSoundCaptureBuffer
{
    ma_IDirectSoundCaptureBufferVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_QueryInterface(ma_IDirectSoundCaptureBuffer* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IDirectSoundCaptureBuffer_AddRef(ma_IDirectSoundCaptureBuffer* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IDirectSoundCaptureBuffer_Release(ma_IDirectSoundCaptureBuffer* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_GetCaps(ma_IDirectSoundCaptureBuffer* pThis, MA_DSCBCAPS* pDSCBCaps)                        { return pThis->lpVtbl->GetCaps(pThis, pDSCBCaps); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_GetCurrentPosition(ma_IDirectSoundCaptureBuffer* pThis, DWORD* pCapturePosition, DWORD* pReadPosition) { return pThis->lpVtbl->GetCurrentPosition(pThis, pCapturePosition, pReadPosition); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_GetFormat(ma_IDirectSoundCaptureBuffer* pThis, MA_WAVEFORMATEX* pFormat, DWORD dwSizeAllocated, DWORD* pSizeWritten) { return pThis->lpVtbl->GetFormat(pThis, pFormat, dwSizeAllocated, pSizeWritten); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_GetStatus(ma_IDirectSoundCaptureBuffer* pThis, DWORD* pStatus)                              { return pThis->lpVtbl->GetStatus(pThis, pStatus); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_Initialize(ma_IDirectSoundCaptureBuffer* pThis, ma_IDirectSoundCapture* pDirectSoundCapture, const MA_DSCBUFFERDESC* pDSCBufferDesc) { return pThis->lpVtbl->Initialize(pThis, pDirectSoundCapture, pDSCBufferDesc); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_Lock(ma_IDirectSoundCaptureBuffer* pThis, DWORD dwOffset, DWORD dwBytes, void** ppAudioPtr1, DWORD* pAudioBytes1, void** ppAudioPtr2, DWORD* pAudioBytes2, DWORD dwFlags) { return pThis->lpVtbl->Lock(pThis, dwOffset, dwBytes, ppAudioPtr1, pAudioBytes1, ppAudioPtr2, pAudioBytes2, dwFlags); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_Start(ma_IDirectSoundCaptureBuffer* pThis, DWORD dwFlags)                                   { return pThis->lpVtbl->Start(pThis, dwFlags); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_Stop(ma_IDirectSoundCaptureBuffer* pThis)                                                   { return pThis->lpVtbl->Stop(pThis); }
static MA_INLINE HRESULT ma_IDirectSoundCaptureBuffer_Unlock(ma_IDirectSoundCaptureBuffer* pThis, void* pAudioPtr1, DWORD dwAudioBytes1, void* pAudioPtr2, DWORD dwAudioBytes2) { return pThis->lpVtbl->Unlock(pThis, pAudioPtr1, dwAudioBytes1, pAudioPtr2, dwAudioBytes2); }


/* IDirectSoundNotify */
typedef struct
{
    /* IUnknown */
    HRESULT (STDMETHODCALLTYPE * QueryInterface)(ma_IDirectSoundNotify* pThis, const IID* const riid, void** ppObject);
    ULONG   (STDMETHODCALLTYPE * AddRef)        (ma_IDirectSoundNotify* pThis);
    ULONG   (STDMETHODCALLTYPE * Release)       (ma_IDirectSoundNotify* pThis);

    /* IDirectSoundNotify */
    HRESULT (STDMETHODCALLTYPE * SetNotificationPositions)(ma_IDirectSoundNotify* pThis, DWORD dwPositionNotifies, const MA_DSBPOSITIONNOTIFY* pPositionNotifies);
} ma_IDirectSoundNotifyVtbl;
struct ma_IDirectSoundNotify
{
    ma_IDirectSoundNotifyVtbl* lpVtbl;
};
static MA_INLINE HRESULT ma_IDirectSoundNotify_QueryInterface(ma_IDirectSoundNotify* pThis, const IID* const riid, void** ppObject) { return pThis->lpVtbl->QueryInterface(pThis, riid, ppObject); }
static MA_INLINE ULONG   ma_IDirectSoundNotify_AddRef(ma_IDirectSoundNotify* pThis)                                                 { return pThis->lpVtbl->AddRef(pThis); }
static MA_INLINE ULONG   ma_IDirectSoundNotify_Release(ma_IDirectSoundNotify* pThis)                                                { return pThis->lpVtbl->Release(pThis); }
static MA_INLINE HRESULT ma_IDirectSoundNotify_SetNotificationPositions(ma_IDirectSoundNotify* pThis, DWORD dwPositionNotifies, const MA_DSBPOSITIONNOTIFY* pPositionNotifies) { return pThis->lpVtbl->SetNotificationPositions(pThis, dwPositionNotifies, pPositionNotifies); }


typedef BOOL    (CALLBACK * ma_DSEnumCallbackAProc)             (GUID* pDeviceGUID, const char* pDeviceDescription, const char* pModule, void* pContext);
typedef HRESULT (WINAPI   * ma_DirectSoundCreateProc)           (const GUID* pcGuidDevice, ma_IDirectSound** ppDS8, ma_IUnknown* pUnkOuter);
typedef HRESULT (WINAPI   * ma_DirectSoundEnumerateAProc)       (ma_DSEnumCallbackAProc pDSEnumCallback, void* pContext);
typedef HRESULT (WINAPI   * ma_DirectSoundCaptureCreateProc)    (const GUID* pcGuidDevice, ma_IDirectSoundCapture** ppDSC8, ma_IUnknown* pUnkOuter);
typedef HRESULT (WINAPI   * ma_DirectSoundCaptureEnumerateAProc)(ma_DSEnumCallbackAProc pDSEnumCallback, void* pContext);

static ma_uint32 ma_get_best_sample_rate_within_range(ma_uint32 sampleRateMin, ma_uint32 sampleRateMax)
{
    /* Normalize the range in case we were given something stupid. */
    if (sampleRateMin < (ma_uint32)ma_standard_sample_rate_min) {
        sampleRateMin = (ma_uint32)ma_standard_sample_rate_min;
    }
    if (sampleRateMax > (ma_uint32)ma_standard_sample_rate_max) {
        sampleRateMax = (ma_uint32)ma_standard_sample_rate_max;
    }
    if (sampleRateMin > sampleRateMax) {
        sampleRateMin = sampleRateMax;
    }

    if (sampleRateMin == sampleRateMax) {
        return sampleRateMax;
    } else {
        size_t iStandardRate;
        for (iStandardRate = 0; iStandardRate < ma_countof(g_maStandardSampleRatePriorities); ++iStandardRate) {
            ma_uint32 standardRate = g_maStandardSampleRatePriorities[iStandardRate];
            if (standardRate >= sampleRateMin && standardRate <= sampleRateMax) {
                return standardRate;
            }
        }
    }

    /* Should never get here. */
    MA_ASSERT(MA_FALSE);
    return 0;
}

/*
Retrieves the channel count and channel map for the given speaker configuration. If the speaker configuration is unknown,
the channel count and channel map will be left unmodified.
*/
static void ma_get_channels_from_speaker_config__dsound(DWORD speakerConfig, WORD* pChannelsOut, DWORD* pChannelMapOut)
{
    WORD  channels;
    DWORD channelMap;

    channels = 0;
    if (pChannelsOut != NULL) {
        channels = *pChannelsOut;
    }

    channelMap = 0;
    if (pChannelMapOut != NULL) {
        channelMap = *pChannelMapOut;
    }

    /*
    The speaker configuration is a combination of speaker config and speaker geometry. The lower 8 bits is what we care about. The upper
    16 bits is for the geometry.
    */
    switch ((BYTE)(speakerConfig)) {
        case 1 /*DSSPEAKER_HEADPHONE*/:                          channels = 2; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT; break;
        case 2 /*DSSPEAKER_MONO*/:                               channels = 1; channelMap = SPEAKER_FRONT_CENTER; break;
        case 3 /*DSSPEAKER_QUAD*/:                               channels = 4; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT; break;
        case 4 /*DSSPEAKER_STEREO*/:                             channels = 2; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT; break;
        case 5 /*DSSPEAKER_SURROUND*/:                           channels = 4; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_BACK_CENTER; break;
        case 6 /*DSSPEAKER_5POINT1_BACK*/ /*DSSPEAKER_5POINT1*/: channels = 6; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT; break;
        case 7 /*DSSPEAKER_7POINT1_WIDE*/ /*DSSPEAKER_7POINT1*/: channels = 8; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT | SPEAKER_FRONT_LEFT_OF_CENTER | SPEAKER_FRONT_RIGHT_OF_CENTER; break;
        case 8 /*DSSPEAKER_7POINT1_SURROUND*/:                   channels = 8; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT; break;
        case 9 /*DSSPEAKER_5POINT1_SURROUND*/:                   channels = 6; channelMap = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT; break;
        default: break;
    }

    if (pChannelsOut != NULL) {
        *pChannelsOut = channels;
    }

    if (pChannelMapOut != NULL) {
        *pChannelMapOut = channelMap;
    }
}


static ma_result ma_context_create_IDirectSound__dsound(ma_context* pContext, ma_share_mode shareMode, const ma_device_id* pDeviceID, ma_IDirectSound** ppDirectSound)
{
    ma_IDirectSound* pDirectSound;
    HWND hWnd;
    HRESULT hr;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppDirectSound != NULL);

    *ppDirectSound = NULL;
    pDirectSound = NULL;

    if (FAILED(((ma_DirectSoundCreateProc)pContext->dsound.DirectSoundCreate)((pDeviceID == NULL) ? NULL : (const GUID*)pDeviceID->dsound, &pDirectSound, NULL))) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[DirectSound] DirectSoundCreate() failed for playback device.");
        return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
    }

    /* The cooperative level must be set before doing anything else. */
    hWnd = (HWND)pContext->dsound.hWnd;
    if (hWnd == 0) {
        hWnd = ((MA_PFN_GetForegroundWindow)pContext->win32.GetForegroundWindow)();
        if (hWnd == 0) {
            hWnd = ((MA_PFN_GetDesktopWindow)pContext->win32.GetDesktopWindow)();
        }
    }

    hr = ma_IDirectSound_SetCooperativeLevel(pDirectSound, hWnd, (shareMode == ma_share_mode_exclusive) ? MA_DSSCL_EXCLUSIVE : MA_DSSCL_PRIORITY);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSound_SetCooperateiveLevel() failed for playback device.");
        return ma_result_from_HRESULT(hr);
    }

    *ppDirectSound = pDirectSound;
    return MA_SUCCESS;
}

static ma_result ma_context_create_IDirectSoundCapture__dsound(ma_context* pContext, ma_share_mode shareMode, const ma_device_id* pDeviceID, ma_IDirectSoundCapture** ppDirectSoundCapture)
{
    ma_IDirectSoundCapture* pDirectSoundCapture;
    HRESULT hr;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppDirectSoundCapture != NULL);

    /* DirectSound does not support exclusive mode for capture. */
    if (shareMode == ma_share_mode_exclusive) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    *ppDirectSoundCapture = NULL;
    pDirectSoundCapture = NULL;

    hr = ((ma_DirectSoundCaptureCreateProc)pContext->dsound.DirectSoundCaptureCreate)((pDeviceID == NULL) ? NULL : (const GUID*)pDeviceID->dsound, &pDirectSoundCapture, NULL);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[DirectSound] DirectSoundCaptureCreate() failed for capture device.");
        return ma_result_from_HRESULT(hr);
    }

    *ppDirectSoundCapture = pDirectSoundCapture;
    return MA_SUCCESS;
}

static ma_result ma_context_get_format_info_for_IDirectSoundCapture__dsound(ma_context* pContext, ma_IDirectSoundCapture* pDirectSoundCapture, WORD* pChannels, WORD* pBitsPerSample, DWORD* pSampleRate)
{
    HRESULT hr;
    MA_DSCCAPS caps;
    WORD bitsPerSample;
    DWORD sampleRate;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pDirectSoundCapture != NULL);

    if (pChannels) {
        *pChannels = 0;
    }
    if (pBitsPerSample) {
        *pBitsPerSample = 0;
    }
    if (pSampleRate) {
        *pSampleRate = 0;
    }

    MA_ZERO_OBJECT(&caps);
    caps.dwSize = sizeof(caps);
    hr = ma_IDirectSoundCapture_GetCaps(pDirectSoundCapture, &caps);
    if (FAILED(hr)) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundCapture_GetCaps() failed for capture device.");
        return ma_result_from_HRESULT(hr);
    }

    if (pChannels) {
        *pChannels = (WORD)caps.dwChannels;
    }

    /* The device can support multiple formats. We just go through the different formats in order of priority and pick the first one. This the same type of system as the WinMM backend. */
    bitsPerSample = 16;
    sampleRate = 48000;

    if (caps.dwChannels == 1) {
        if ((caps.dwFormats & WAVE_FORMAT_48M16) != 0) {
            sampleRate = 48000;
        } else if ((caps.dwFormats & WAVE_FORMAT_44M16) != 0) {
            sampleRate = 44100;
        } else if ((caps.dwFormats & WAVE_FORMAT_2M16) != 0) {
            sampleRate = 22050;
        } else if ((caps.dwFormats & WAVE_FORMAT_1M16) != 0) {
            sampleRate = 11025;
        } else if ((caps.dwFormats & WAVE_FORMAT_96M16) != 0) {
            sampleRate = 96000;
        } else {
            bitsPerSample = 8;
            if ((caps.dwFormats & WAVE_FORMAT_48M08) != 0) {
                sampleRate = 48000;
            } else if ((caps.dwFormats & WAVE_FORMAT_44M08) != 0) {
                sampleRate = 44100;
            } else if ((caps.dwFormats & WAVE_FORMAT_2M08) != 0) {
                sampleRate = 22050;
            } else if ((caps.dwFormats & WAVE_FORMAT_1M08) != 0) {
                sampleRate = 11025;
            } else if ((caps.dwFormats & WAVE_FORMAT_96M08) != 0) {
                sampleRate = 96000;
            } else {
                bitsPerSample = 16;  /* Didn't find it. Just fall back to 16-bit. */
            }
        }
    } else if (caps.dwChannels == 2) {
        if ((caps.dwFormats & WAVE_FORMAT_48S16) != 0) {
            sampleRate = 48000;
        } else if ((caps.dwFormats & WAVE_FORMAT_44S16) != 0) {
            sampleRate = 44100;
        } else if ((caps.dwFormats & WAVE_FORMAT_2S16) != 0) {
            sampleRate = 22050;
        } else if ((caps.dwFormats & WAVE_FORMAT_1S16) != 0) {
            sampleRate = 11025;
        } else if ((caps.dwFormats & WAVE_FORMAT_96S16) != 0) {
            sampleRate = 96000;
        } else {
            bitsPerSample = 8;
            if ((caps.dwFormats & WAVE_FORMAT_48S08) != 0) {
                sampleRate = 48000;
            } else if ((caps.dwFormats & WAVE_FORMAT_44S08) != 0) {
                sampleRate = 44100;
            } else if ((caps.dwFormats & WAVE_FORMAT_2S08) != 0) {
                sampleRate = 22050;
            } else if ((caps.dwFormats & WAVE_FORMAT_1S08) != 0) {
                sampleRate = 11025;
            } else if ((caps.dwFormats & WAVE_FORMAT_96S08) != 0) {
                sampleRate = 96000;
            } else {
                bitsPerSample = 16;  /* Didn't find it. Just fall back to 16-bit. */
            }
        }
    }

    if (pBitsPerSample) {
        *pBitsPerSample = bitsPerSample;
    }
    if (pSampleRate) {
        *pSampleRate = sampleRate;
    }

    return MA_SUCCESS;
}


typedef struct
{
    ma_context* pContext;
    ma_device_type deviceType;
    ma_enum_devices_callback_proc callback;
    void* pUserData;
    ma_bool32 terminated;
} ma_context_enumerate_devices_callback_data__dsound;

static BOOL CALLBACK ma_context_enumerate_devices_callback__dsound(GUID* lpGuid, const char* lpcstrDescription, const char* lpcstrModule, void* lpContext)
{
    ma_context_enumerate_devices_callback_data__dsound* pData = (ma_context_enumerate_devices_callback_data__dsound*)lpContext;
    ma_device_info deviceInfo;

    (void)lpcstrModule;

    MA_ZERO_OBJECT(&deviceInfo);

    /* ID. */
    if (lpGuid != NULL) {
        MA_COPY_MEMORY(deviceInfo.id.dsound, lpGuid, 16);
    } else {
        MA_ZERO_MEMORY(deviceInfo.id.dsound, 16);
        deviceInfo.isDefault = MA_TRUE;
    }

    /* Name / Description */
    ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), lpcstrDescription, (size_t)-1);


    /* Call the callback function, but make sure we stop enumerating if the callee requested so. */
    MA_ASSERT(pData != NULL);
    pData->terminated = (pData->callback(pData->pContext, pData->deviceType, &deviceInfo, pData->pUserData) == MA_FALSE);
    if (pData->terminated) {
        return FALSE;   /* Stop enumeration. */
    } else {
        return TRUE;    /* Continue enumeration. */
    }
}

static ma_result ma_context_enumerate_devices__dsound(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_context_enumerate_devices_callback_data__dsound data;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    data.pContext = pContext;
    data.callback = callback;
    data.pUserData = pUserData;
    data.terminated = MA_FALSE;

    /* Playback. */
    if (!data.terminated) {
        data.deviceType = ma_device_type_playback;
        ((ma_DirectSoundEnumerateAProc)pContext->dsound.DirectSoundEnumerateA)(ma_context_enumerate_devices_callback__dsound, &data);
    }

    /* Capture. */
    if (!data.terminated) {
        data.deviceType = ma_device_type_capture;
        ((ma_DirectSoundCaptureEnumerateAProc)pContext->dsound.DirectSoundCaptureEnumerateA)(ma_context_enumerate_devices_callback__dsound, &data);
    }

    return MA_SUCCESS;
}


typedef struct
{
    const ma_device_id* pDeviceID;
    ma_device_info* pDeviceInfo;
    ma_bool32 found;
} ma_context_get_device_info_callback_data__dsound;

static BOOL CALLBACK ma_context_get_device_info_callback__dsound(GUID* lpGuid, const char* lpcstrDescription, const char* lpcstrModule, void* lpContext)
{
    ma_context_get_device_info_callback_data__dsound* pData = (ma_context_get_device_info_callback_data__dsound*)lpContext;
    MA_ASSERT(pData != NULL);

    if ((pData->pDeviceID == NULL || ma_is_guid_null(pData->pDeviceID->dsound)) && (lpGuid == NULL || ma_is_guid_null(lpGuid))) {
        /* Default device. */
        ma_strncpy_s(pData->pDeviceInfo->name, sizeof(pData->pDeviceInfo->name), lpcstrDescription, (size_t)-1);
        pData->pDeviceInfo->isDefault = MA_TRUE;
        pData->found = MA_TRUE;
        return FALSE;   /* Stop enumeration. */
    } else {
        /* Not the default device. */
        if (lpGuid != NULL && pData->pDeviceID != NULL) {
            if (memcmp(pData->pDeviceID->dsound, lpGuid, sizeof(pData->pDeviceID->dsound)) == 0) {
                ma_strncpy_s(pData->pDeviceInfo->name, sizeof(pData->pDeviceInfo->name), lpcstrDescription, (size_t)-1);
                pData->found = MA_TRUE;
                return FALSE;   /* Stop enumeration. */
            }
        }
    }

    (void)lpcstrModule;
    return TRUE;
}

static ma_result ma_context_get_device_info__dsound(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_result result;
    HRESULT hr;

    if (pDeviceID != NULL) {
        ma_context_get_device_info_callback_data__dsound data;

        /* ID. */
        MA_COPY_MEMORY(pDeviceInfo->id.dsound, pDeviceID->dsound, 16);

        /* Name / Description. This is retrieved by enumerating over each device until we find that one that matches the input ID. */
        data.pDeviceID = pDeviceID;
        data.pDeviceInfo = pDeviceInfo;
        data.found = MA_FALSE;
        if (deviceType == ma_device_type_playback) {
            ((ma_DirectSoundEnumerateAProc)pContext->dsound.DirectSoundEnumerateA)(ma_context_get_device_info_callback__dsound, &data);
        } else {
            ((ma_DirectSoundCaptureEnumerateAProc)pContext->dsound.DirectSoundCaptureEnumerateA)(ma_context_get_device_info_callback__dsound, &data);
        }

        if (!data.found) {
            return MA_NO_DEVICE;
        }
    } else {
        /* I don't think there's a way to get the name of the default device with DirectSound. In this case we just need to use defaults. */

        /* ID */
        MA_ZERO_MEMORY(pDeviceInfo->id.dsound, 16);

        /* Name / Description */
        if (deviceType == ma_device_type_playback) {
            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
        } else {
            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
        }

        pDeviceInfo->isDefault = MA_TRUE;
    }

    /* Retrieving detailed information is slightly different depending on the device type. */
    if (deviceType == ma_device_type_playback) {
        /* Playback. */
        ma_IDirectSound* pDirectSound;
        MA_DSCAPS caps;
        WORD channels;

        result = ma_context_create_IDirectSound__dsound(pContext, ma_share_mode_shared, pDeviceID, &pDirectSound);
        if (result != MA_SUCCESS) {
            return result;
        }

        MA_ZERO_OBJECT(&caps);
        caps.dwSize = sizeof(caps);
        hr = ma_IDirectSound_GetCaps(pDirectSound, &caps);
        if (FAILED(hr)) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSound_GetCaps() failed for playback device.");
            return ma_result_from_HRESULT(hr);
        }


        /* Channels. Only a single channel count is reported for DirectSound. */
        if ((caps.dwFlags & MA_DSCAPS_PRIMARYSTEREO) != 0) {
            /* It supports at least stereo, but could support more. */
            DWORD speakerConfig;

            channels = 2;

            /* Look at the speaker configuration to get a better idea on the channel count. */
            hr = ma_IDirectSound_GetSpeakerConfig(pDirectSound, &speakerConfig);
            if (SUCCEEDED(hr)) {
                ma_get_channels_from_speaker_config__dsound(speakerConfig, &channels, NULL);
            }
        } else {
            /* It does not support stereo, which means we are stuck with mono. */
            channels = 1;
        }


        /*
        In DirectSound, our native formats are centered around sample rates. All formats are supported, and we're only reporting a single channel
        count. However, DirectSound can report a range of supported sample rates. We're only going to include standard rates known by miniaudio
        in order to keep the size of this within reason.
        */
        if ((caps.dwFlags & MA_DSCAPS_CONTINUOUSRATE) != 0) {
            /* Multiple sample rates are supported. We'll report in order of our preferred sample rates. */
            size_t iStandardSampleRate;
            for (iStandardSampleRate = 0; iStandardSampleRate < ma_countof(g_maStandardSampleRatePriorities); iStandardSampleRate += 1) {
                ma_uint32 sampleRate = g_maStandardSampleRatePriorities[iStandardSampleRate];
                if (sampleRate >= caps.dwMinSecondarySampleRate && sampleRate <= caps.dwMaxSecondarySampleRate) {
                    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = ma_format_unknown;
                    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = channels;
                    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = sampleRate;
                    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = 0;
                    pDeviceInfo->nativeDataFormatCount += 1;
                }
            }
        } else {
            /* Only a single sample rate is supported. */
            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = ma_format_unknown;
            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = channels;
            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = caps.dwMaxSecondarySampleRate;
            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = 0;
            pDeviceInfo->nativeDataFormatCount += 1;
        }

        ma_IDirectSound_Release(pDirectSound);
    } else {
        /*
        Capture. This is a little different to playback due to the say the supported formats are reported. Technically capture
        devices can support a number of different formats, but for simplicity and consistency with ma_device_init() I'm just
        reporting the best format.
        */
        ma_IDirectSoundCapture* pDirectSoundCapture;
        WORD channels;
        WORD bitsPerSample;
        DWORD sampleRate;

        result = ma_context_create_IDirectSoundCapture__dsound(pContext, ma_share_mode_shared, pDeviceID, &pDirectSoundCapture);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_context_get_format_info_for_IDirectSoundCapture__dsound(pContext, pDirectSoundCapture, &channels, &bitsPerSample, &sampleRate);
        if (result != MA_SUCCESS) {
            ma_IDirectSoundCapture_Release(pDirectSoundCapture);
            return result;
        }

        ma_IDirectSoundCapture_Release(pDirectSoundCapture);

        /* The format is always an integer format and is based on the bits per sample. */
        if (bitsPerSample == 8) {
            pDeviceInfo->nativeDataFormats[0].format = ma_format_u8;
        } else if (bitsPerSample == 16) {
            pDeviceInfo->nativeDataFormats[0].format = ma_format_s16;
        } else if (bitsPerSample == 24) {
            pDeviceInfo->nativeDataFormats[0].format = ma_format_s24;
        } else if (bitsPerSample == 32) {
            pDeviceInfo->nativeDataFormats[0].format = ma_format_s32;
        } else {
            return MA_FORMAT_NOT_SUPPORTED;
        }

        pDeviceInfo->nativeDataFormats[0].channels   = channels;
        pDeviceInfo->nativeDataFormats[0].sampleRate = sampleRate;
        pDeviceInfo->nativeDataFormats[0].flags      = 0;
        pDeviceInfo->nativeDataFormatCount = 1;
    }

    return MA_SUCCESS;
}



static ma_result ma_device_uninit__dsound(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->dsound.pCaptureBuffer != NULL) {
        ma_IDirectSoundCaptureBuffer_Release((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer);
    }
    if (pDevice->dsound.pCapture != NULL) {
        ma_IDirectSoundCapture_Release((ma_IDirectSoundCapture*)pDevice->dsound.pCapture);
    }

    if (pDevice->dsound.pPlaybackBuffer != NULL) {
        ma_IDirectSoundBuffer_Release((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer);
    }
    if (pDevice->dsound.pPlaybackPrimaryBuffer != NULL) {
        ma_IDirectSoundBuffer_Release((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackPrimaryBuffer);
    }
    if (pDevice->dsound.pPlayback != NULL) {
        ma_IDirectSound_Release((ma_IDirectSound*)pDevice->dsound.pPlayback);
    }

    return MA_SUCCESS;
}

static ma_result ma_config_to_WAVEFORMATEXTENSIBLE(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, const ma_channel* pChannelMap, MA_WAVEFORMATEXTENSIBLE* pWF)
{
    GUID subformat;

    if (format == ma_format_unknown) {
        format = MA_DEFAULT_FORMAT;
    }

    if (channels == 0) {
        channels = MA_DEFAULT_CHANNELS;
    }

    if (sampleRate == 0) {
        sampleRate = MA_DEFAULT_SAMPLE_RATE;
    }

    switch (format)
    {
        case ma_format_u8:
        case ma_format_s16:
        case ma_format_s24:
        /*case ma_format_s24_32:*/
        case ma_format_s32:
        {
            subformat = MA_GUID_KSDATAFORMAT_SUBTYPE_PCM;
        } break;

        case ma_format_f32:
        {
            subformat = MA_GUID_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
        } break;

        default:
        return MA_FORMAT_NOT_SUPPORTED;
    }

    MA_ZERO_OBJECT(pWF);
    pWF->cbSize                      = sizeof(*pWF);
    pWF->wFormatTag                  = WAVE_FORMAT_EXTENSIBLE;
    pWF->nChannels                   = (WORD)channels;
    pWF->nSamplesPerSec              = (DWORD)sampleRate;
    pWF->wBitsPerSample              = (WORD)(ma_get_bytes_per_sample(format)*8);
    pWF->nBlockAlign                 = (WORD)(pWF->nChannels * pWF->wBitsPerSample / 8);
    pWF->nAvgBytesPerSec             = pWF->nBlockAlign * pWF->nSamplesPerSec;
    pWF->Samples.wValidBitsPerSample = pWF->wBitsPerSample;
    pWF->dwChannelMask               = ma_channel_map_to_channel_mask__win32(pChannelMap, channels);
    pWF->SubFormat                   = subformat;

    return MA_SUCCESS;
}

static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__dsound(const ma_device_descriptor* pDescriptor, ma_uint32 nativeSampleRate, ma_performance_profile performanceProfile)
{
    /*
    DirectSound has a minimum period size of 20ms. In practice, this doesn't seem to be enough for
    reliable glitch-free processing so going to use 30ms instead.
    */
    ma_uint32 minPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(30, nativeSampleRate);
    ma_uint32 periodSizeInFrames;

    periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, nativeSampleRate, performanceProfile);
    if (periodSizeInFrames < minPeriodSizeInFrames) {
        periodSizeInFrames = minPeriodSizeInFrames;
    }

    return periodSizeInFrames;
}

static ma_result ma_device_init__dsound(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;
    HRESULT hr;

    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->dsound);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /*
    Unfortunately DirectSound uses different APIs and data structures for playback and capture devices. We need to initialize
    the capture device first because we'll want to match its buffer size and period count on the playback side if we're using
    full-duplex mode.
    */
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        MA_WAVEFORMATEXTENSIBLE wf;
        MA_DSCBUFFERDESC descDS;
        ma_uint32 periodSizeInFrames;
        ma_uint32 periodCount;
        char rawdata[1024]; /* <-- Ugly hack to avoid a malloc() due to a crappy DirectSound API. */
        MA_WAVEFORMATEXTENSIBLE* pActualFormat;

        result = ma_config_to_WAVEFORMATEXTENSIBLE(pDescriptorCapture->format, pDescriptorCapture->channels, pDescriptorCapture->sampleRate, pDescriptorCapture->channelMap, &wf);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_context_create_IDirectSoundCapture__dsound(pDevice->pContext, pDescriptorCapture->shareMode, pDescriptorCapture->pDeviceID, (ma_IDirectSoundCapture**)&pDevice->dsound.pCapture);
        if (result != MA_SUCCESS) {
            ma_device_uninit__dsound(pDevice);
            return result;
        }

        result = ma_context_get_format_info_for_IDirectSoundCapture__dsound(pDevice->pContext, (ma_IDirectSoundCapture*)pDevice->dsound.pCapture, &wf.nChannels, &wf.wBitsPerSample, &wf.nSamplesPerSec);
        if (result != MA_SUCCESS) {
            ma_device_uninit__dsound(pDevice);
            return result;
        }

        wf.nBlockAlign                 = (WORD)(wf.nChannels * wf.wBitsPerSample / 8);
        wf.nAvgBytesPerSec             = wf.nBlockAlign * wf.nSamplesPerSec;
        wf.Samples.wValidBitsPerSample = wf.wBitsPerSample;
        wf.SubFormat                   = MA_GUID_KSDATAFORMAT_SUBTYPE_PCM;

        /* The size of the buffer must be a clean multiple of the period count. */
        periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__dsound(pDescriptorCapture, wf.nSamplesPerSec, pConfig->performanceProfile);
        periodCount = (pDescriptorCapture->periodCount > 0) ? pDescriptorCapture->periodCount : MA_DEFAULT_PERIODS;

        MA_ZERO_OBJECT(&descDS);
        descDS.dwSize        = sizeof(descDS);
        descDS.dwFlags       = 0;
        descDS.dwBufferBytes = periodSizeInFrames * periodCount * wf.nBlockAlign;
        descDS.lpwfxFormat   = (MA_WAVEFORMATEX*)&wf;
        hr = ma_IDirectSoundCapture_CreateCaptureBuffer((ma_IDirectSoundCapture*)pDevice->dsound.pCapture, &descDS, (ma_IDirectSoundCaptureBuffer**)&pDevice->dsound.pCaptureBuffer, NULL);
        if (FAILED(hr)) {
            ma_device_uninit__dsound(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundCapture_CreateCaptureBuffer() failed for capture device.");
            return ma_result_from_HRESULT(hr);
        }

        /* Get the _actual_ properties of the buffer. */
        pActualFormat = (MA_WAVEFORMATEXTENSIBLE*)rawdata;
        hr = ma_IDirectSoundCaptureBuffer_GetFormat((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, (MA_WAVEFORMATEX*)pActualFormat, sizeof(rawdata), NULL);
        if (FAILED(hr)) {
            ma_device_uninit__dsound(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to retrieve the actual format of the capture device's buffer.");
            return ma_result_from_HRESULT(hr);
        }

        /* We can now start setting the output data formats. */
        pDescriptorCapture->format     = ma_format_from_WAVEFORMATEX((MA_WAVEFORMATEX*)pActualFormat);
        pDescriptorCapture->channels   = pActualFormat->nChannels;
        pDescriptorCapture->sampleRate = pActualFormat->nSamplesPerSec;

        /* Get the native channel map based on the channel mask. */
        if (pActualFormat->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
            ma_channel_mask_to_channel_map__win32(pActualFormat->dwChannelMask, pDescriptorCapture->channels, pDescriptorCapture->channelMap);
        } else {
            ma_channel_mask_to_channel_map__win32(wf.dwChannelMask, pDescriptorCapture->channels, pDescriptorCapture->channelMap);
        }

        /*
        After getting the actual format the size of the buffer in frames may have actually changed. However, we want this to be as close to what the
        user has asked for as possible, so let's go ahead and release the old capture buffer and create a new one in this case.
        */
        if (periodSizeInFrames != (descDS.dwBufferBytes / ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels) / periodCount)) {
            descDS.dwBufferBytes = periodSizeInFrames * ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels) * periodCount;
            ma_IDirectSoundCaptureBuffer_Release((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer);

            hr = ma_IDirectSoundCapture_CreateCaptureBuffer((ma_IDirectSoundCapture*)pDevice->dsound.pCapture, &descDS, (ma_IDirectSoundCaptureBuffer**)&pDevice->dsound.pCaptureBuffer, NULL);
            if (FAILED(hr)) {
                ma_device_uninit__dsound(pDevice);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Second attempt at IDirectSoundCapture_CreateCaptureBuffer() failed for capture device.");
                return ma_result_from_HRESULT(hr);
            }
        }

        /* DirectSound should give us a buffer exactly the size we asked for. */
        pDescriptorCapture->periodSizeInFrames = periodSizeInFrames;
        pDescriptorCapture->periodCount        = periodCount;
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        MA_WAVEFORMATEXTENSIBLE wf;
        MA_DSBUFFERDESC descDSPrimary;
        MA_DSCAPS caps;
        char rawdata[1024]; /* <-- Ugly hack to avoid a malloc() due to a crappy DirectSound API. */
        MA_WAVEFORMATEXTENSIBLE* pActualFormat;
        ma_uint32 periodSizeInFrames;
        ma_uint32 periodCount;
        MA_DSBUFFERDESC descDS;
        WORD nativeChannelCount;
        DWORD nativeChannelMask = 0;

        result = ma_config_to_WAVEFORMATEXTENSIBLE(pDescriptorPlayback->format, pDescriptorPlayback->channels, pDescriptorPlayback->sampleRate, pDescriptorPlayback->channelMap, &wf);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_context_create_IDirectSound__dsound(pDevice->pContext, pDescriptorPlayback->shareMode, pDescriptorPlayback->pDeviceID, (ma_IDirectSound**)&pDevice->dsound.pPlayback);
        if (result != MA_SUCCESS) {
            ma_device_uninit__dsound(pDevice);
            return result;
        }

        MA_ZERO_OBJECT(&descDSPrimary);
        descDSPrimary.dwSize  = sizeof(MA_DSBUFFERDESC);
        descDSPrimary.dwFlags = MA_DSBCAPS_PRIMARYBUFFER | MA_DSBCAPS_CTRLVOLUME;
        hr = ma_IDirectSound_CreateSoundBuffer((ma_IDirectSound*)pDevice->dsound.pPlayback, &descDSPrimary, (ma_IDirectSoundBuffer**)&pDevice->dsound.pPlaybackPrimaryBuffer, NULL);
        if (FAILED(hr)) {
            ma_device_uninit__dsound(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSound_CreateSoundBuffer() failed for playback device's primary buffer.");
            return ma_result_from_HRESULT(hr);
        }


        /* We may want to make some adjustments to the format if we are using defaults. */
        MA_ZERO_OBJECT(&caps);
        caps.dwSize = sizeof(caps);
        hr = ma_IDirectSound_GetCaps((ma_IDirectSound*)pDevice->dsound.pPlayback, &caps);
        if (FAILED(hr)) {
            ma_device_uninit__dsound(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSound_GetCaps() failed for playback device.");
            return ma_result_from_HRESULT(hr);
        }

        if ((caps.dwFlags & MA_DSCAPS_PRIMARYSTEREO) != 0) {
            DWORD speakerConfig;

            /* It supports at least stereo, but could support more. */
            nativeChannelCount = 2;

            /* Look at the speaker configuration to get a better idea on the channel count. */
            if (SUCCEEDED(ma_IDirectSound_GetSpeakerConfig((ma_IDirectSound*)pDevice->dsound.pPlayback, &speakerConfig))) {
                ma_get_channels_from_speaker_config__dsound(speakerConfig, &nativeChannelCount, &nativeChannelMask);
            }
        } else {
            /* It does not support stereo, which means we are stuck with mono. */
            nativeChannelCount = 1;
            nativeChannelMask  = 0x00000001;
        }

        if (pDescriptorPlayback->channels == 0) {
            wf.nChannels = nativeChannelCount;
            wf.dwChannelMask    = nativeChannelMask;
        }

        if (pDescriptorPlayback->sampleRate == 0) {
            /* We base the sample rate on the values returned by GetCaps(). */
            if ((caps.dwFlags & MA_DSCAPS_CONTINUOUSRATE) != 0) {
                wf.nSamplesPerSec = ma_get_best_sample_rate_within_range(caps.dwMinSecondarySampleRate, caps.dwMaxSecondarySampleRate);
            } else {
                wf.nSamplesPerSec = caps.dwMaxSecondarySampleRate;
            }
        }

        wf.nBlockAlign     = (WORD)(wf.nChannels * wf.wBitsPerSample / 8);
        wf.nAvgBytesPerSec = wf.nBlockAlign * wf.nSamplesPerSec;

        /*
        From MSDN:

        The method succeeds even if the hardware does not support the requested format; DirectSound sets the buffer to the closest
        supported format. To determine whether this has happened, an application can call the GetFormat method for the primary buffer
        and compare the result with the format that was requested with the SetFormat method.
        */
        hr = ma_IDirectSoundBuffer_SetFormat((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackPrimaryBuffer, (MA_WAVEFORMATEX*)&wf);
        if (FAILED(hr)) {
            /*
            If setting of the format failed we'll try again with some fallback settings. On Windows 98 I have
            observed that IEEE_FLOAT does not work. We'll therefore enforce PCM. I also had issues where a
            sample rate of 48000 did not work correctly. Not sure if it was a driver issue or not, but will
            use 44100 for the sample rate.
            */
            wf.cbSize          = 18;    /* NOTE: Don't use sizeof(MA_WAVEFORMATEX) here because it's got an extra 2 bytes due to padding. */
            wf.wFormatTag      = WAVE_FORMAT_PCM;
            wf.wBitsPerSample  = 16;
            wf.nChannels       = nativeChannelCount;
            wf.nSamplesPerSec  = 44100;
            wf.nBlockAlign     = wf.nChannels * (wf.wBitsPerSample / 8);
            wf.nAvgBytesPerSec = wf.nSamplesPerSec * wf.nBlockAlign;

            hr = ma_IDirectSoundBuffer_SetFormat((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackPrimaryBuffer, (MA_WAVEFORMATEX*)&wf);
            if (FAILED(hr)) {
                ma_device_uninit__dsound(pDevice);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to set format of playback device's primary buffer.");
                return ma_result_from_HRESULT(hr);
            }
        }

        /* Get the _actual_ properties of the buffer. */
        pActualFormat = (MA_WAVEFORMATEXTENSIBLE*)rawdata;
        hr = ma_IDirectSoundBuffer_GetFormat((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackPrimaryBuffer, (MA_WAVEFORMATEX*)pActualFormat, sizeof(rawdata), NULL);
        if (FAILED(hr)) {
            ma_device_uninit__dsound(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to retrieve the actual format of the playback device's primary buffer.");
            return ma_result_from_HRESULT(hr);
        }

        /* We now have enough information to start setting some output properties. */
        pDescriptorPlayback->format     = ma_format_from_WAVEFORMATEX((MA_WAVEFORMATEX*)pActualFormat);
        pDescriptorPlayback->channels   = pActualFormat->nChannels;
        pDescriptorPlayback->sampleRate = pActualFormat->nSamplesPerSec;

        /* Get the internal channel map based on the channel mask. */
        if (pActualFormat->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
            ma_channel_mask_to_channel_map__win32(pActualFormat->dwChannelMask, pDescriptorPlayback->channels, pDescriptorPlayback->channelMap);
        } else {
            ma_channel_mask_to_channel_map__win32(wf.dwChannelMask, pDescriptorPlayback->channels, pDescriptorPlayback->channelMap);
        }

        /* The size of the buffer must be a clean multiple of the period count. */
        periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__dsound(pDescriptorPlayback, pDescriptorPlayback->sampleRate, pConfig->performanceProfile);
        periodCount = (pDescriptorPlayback->periodCount > 0) ? pDescriptorPlayback->periodCount : MA_DEFAULT_PERIODS;

        /*
        Meaning of dwFlags (from MSDN):

        DSBCAPS_CTRLPOSITIONNOTIFY
          The buffer has position notification capability.

        DSBCAPS_GLOBALFOCUS
          With this flag set, an application using DirectSound can continue to play its buffers if the user switches focus to
          another application, even if the new application uses DirectSound.

        DSBCAPS_GETCURRENTPOSITION2
          In the first version of DirectSound, the play cursor was significantly ahead of the actual playing sound on emulated
          sound cards; it was directly behind the write cursor. Now, if the DSBCAPS_GETCURRENTPOSITION2 flag is specified, the
          application can get a more accurate play cursor.
        */
        MA_ZERO_OBJECT(&descDS);
        descDS.dwSize = sizeof(descDS);
        descDS.dwFlags = MA_DSBCAPS_CTRLPOSITIONNOTIFY | MA_DSBCAPS_GLOBALFOCUS | MA_DSBCAPS_GETCURRENTPOSITION2;
        descDS.dwBufferBytes = periodSizeInFrames * periodCount * ma_get_bytes_per_frame(pDescriptorPlayback->format, pDescriptorPlayback->channels);
        descDS.lpwfxFormat = (MA_WAVEFORMATEX*)pActualFormat;
        hr = ma_IDirectSound_CreateSoundBuffer((ma_IDirectSound*)pDevice->dsound.pPlayback, &descDS, (ma_IDirectSoundBuffer**)&pDevice->dsound.pPlaybackBuffer, NULL);
        if (FAILED(hr)) {
            ma_device_uninit__dsound(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSound_CreateSoundBuffer() failed for playback device's secondary buffer.");
            return ma_result_from_HRESULT(hr);
        }

        /* DirectSound should give us a buffer exactly the size we asked for. */
        pDescriptorPlayback->periodSizeInFrames = periodSizeInFrames;
        pDescriptorPlayback->periodCount        = periodCount;
    }

    return MA_SUCCESS;
}


static ma_result ma_device_data_loop__dsound(ma_device* pDevice)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 bpfDeviceCapture  = ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
    ma_uint32 bpfDevicePlayback = ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    HRESULT hr;
    DWORD lockOffsetInBytesCapture;
    DWORD lockSizeInBytesCapture;
    DWORD mappedSizeInBytesCapture;
    DWORD mappedDeviceFramesProcessedCapture;
    void* pMappedDeviceBufferCapture;
    DWORD lockOffsetInBytesPlayback;
    DWORD lockSizeInBytesPlayback;
    DWORD mappedSizeInBytesPlayback;
    void* pMappedDeviceBufferPlayback;
    DWORD prevReadCursorInBytesCapture = 0;
    DWORD prevPlayCursorInBytesPlayback = 0;
    ma_bool32 physicalPlayCursorLoopFlagPlayback = 0;
    DWORD virtualWriteCursorInBytesPlayback = 0;
    ma_bool32 virtualWriteCursorLoopFlagPlayback = 0;
    ma_bool32 isPlaybackDeviceStarted = MA_FALSE;
    ma_uint32 framesWrittenToPlaybackDevice = 0;   /* For knowing whether or not the playback device needs to be started. */
    ma_uint32 waitTimeInMilliseconds = 1;
    DWORD playbackBufferStatus = 0;

    MA_ASSERT(pDevice != NULL);

    /* The first thing to do is start the capture device. The playback device is only started after the first period is written. */
    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        hr = ma_IDirectSoundCaptureBuffer_Start((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, MA_DSCBSTART_LOOPING);
        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundCaptureBuffer_Start() failed.");
            return ma_result_from_HRESULT(hr);
        }
    }

    while (ma_device_get_state(pDevice) == ma_device_state_started) {
        switch (pDevice->type)
        {
            case ma_device_type_duplex:
            {
                DWORD physicalCaptureCursorInBytes;
                DWORD physicalReadCursorInBytes;
                hr = ma_IDirectSoundCaptureBuffer_GetCurrentPosition((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, &physicalCaptureCursorInBytes, &physicalReadCursorInBytes);
                if (FAILED(hr)) {
                    return ma_result_from_HRESULT(hr);
                }

                /* If nothing is available we just sleep for a bit and return from this iteration. */
                if (physicalReadCursorInBytes == prevReadCursorInBytesCapture) {
                    ma_sleep(waitTimeInMilliseconds);
                    continue; /* Nothing is available in the capture buffer. */
                }

                /*
                The current position has moved. We need to map all of the captured samples and write them to the playback device, making sure
                we don't return until every frame has been copied over.
                */
                if (prevReadCursorInBytesCapture < physicalReadCursorInBytes) {
                    /* The capture position has not looped. This is the simple case. */
                    lockOffsetInBytesCapture = prevReadCursorInBytesCapture;
                    lockSizeInBytesCapture   = (physicalReadCursorInBytes - prevReadCursorInBytesCapture);
                } else {
                    /*
                    The capture position has looped. This is the more complex case. Map to the end of the buffer. If this does not return anything,
                    do it again from the start.
                    */
                    if (prevReadCursorInBytesCapture < pDevice->capture.internalPeriodSizeInFrames*pDevice->capture.internalPeriods*bpfDeviceCapture) {
                        /* Lock up to the end of the buffer. */
                        lockOffsetInBytesCapture = prevReadCursorInBytesCapture;
                        lockSizeInBytesCapture   = (pDevice->capture.internalPeriodSizeInFrames*pDevice->capture.internalPeriods*bpfDeviceCapture) - prevReadCursorInBytesCapture;
                    } else {
                        /* Lock starting from the start of the buffer. */
                        lockOffsetInBytesCapture = 0;
                        lockSizeInBytesCapture   = physicalReadCursorInBytes;
                    }
                }

                if (lockSizeInBytesCapture == 0) {
                    ma_sleep(waitTimeInMilliseconds);
                    continue; /* Nothing is available in the capture buffer. */
                }

                hr = ma_IDirectSoundCaptureBuffer_Lock((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, lockOffsetInBytesCapture, lockSizeInBytesCapture, &pMappedDeviceBufferCapture, &mappedSizeInBytesCapture, NULL, NULL, 0);
                if (FAILED(hr)) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to map buffer from capture device in preparation for writing to the device.");
                    return ma_result_from_HRESULT(hr);
                }


                /* At this point we have some input data that we need to output. We do not return until every mapped frame of the input data is written to the playback device. */
                mappedDeviceFramesProcessedCapture = 0;

                for (;;) {  /* Keep writing to the playback device. */
                    ma_uint8  inputFramesInClientFormat[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
                    ma_uint32 inputFramesInClientFormatCap = sizeof(inputFramesInClientFormat) / ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels);
                    ma_uint8  outputFramesInClientFormat[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
                    ma_uint32 outputFramesInClientFormatCap = sizeof(outputFramesInClientFormat) / ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels);
                    ma_uint32 outputFramesInClientFormatCount;
                    ma_uint32 outputFramesInClientFormatConsumed = 0;
                    ma_uint64 clientCapturedFramesToProcess = ma_min(inputFramesInClientFormatCap, outputFramesInClientFormatCap);
                    ma_uint64 deviceCapturedFramesToProcess = (mappedSizeInBytesCapture / bpfDeviceCapture) - mappedDeviceFramesProcessedCapture;
                    void* pRunningMappedDeviceBufferCapture = ma_offset_ptr(pMappedDeviceBufferCapture, mappedDeviceFramesProcessedCapture * bpfDeviceCapture);

                    result = ma_data_converter_process_pcm_frames(&pDevice->capture.converter, pRunningMappedDeviceBufferCapture, &deviceCapturedFramesToProcess, inputFramesInClientFormat, &clientCapturedFramesToProcess);
                    if (result != MA_SUCCESS) {
                        break;
                    }

                    outputFramesInClientFormatCount     = (ma_uint32)clientCapturedFramesToProcess;
                    mappedDeviceFramesProcessedCapture += (ma_uint32)deviceCapturedFramesToProcess;

                    ma_device__handle_data_callback(pDevice, outputFramesInClientFormat, inputFramesInClientFormat, (ma_uint32)clientCapturedFramesToProcess);

                    /* At this point we have input and output data in client format. All we need to do now is convert it to the output device format. This may take a few passes. */
                    for (;;) {
                        ma_uint32 framesWrittenThisIteration;
                        DWORD physicalPlayCursorInBytes;
                        DWORD physicalWriteCursorInBytes;
                        DWORD availableBytesPlayback;
                        DWORD silentPaddingInBytes = 0; /* <-- Must be initialized to 0. */

                        /* We need the physical play and write cursors. */
                        if (FAILED(ma_IDirectSoundBuffer_GetCurrentPosition((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, &physicalPlayCursorInBytes, &physicalWriteCursorInBytes))) {
                            break;
                        }

                        if (physicalPlayCursorInBytes < prevPlayCursorInBytesPlayback) {
                            physicalPlayCursorLoopFlagPlayback = !physicalPlayCursorLoopFlagPlayback;
                        }
                        prevPlayCursorInBytesPlayback  = physicalPlayCursorInBytes;

                        /* If there's any bytes available for writing we can do that now. The space between the virtual cursor position and play cursor. */
                        if (physicalPlayCursorLoopFlagPlayback == virtualWriteCursorLoopFlagPlayback) {
                            /* Same loop iteration. The available bytes wraps all the way around from the virtual write cursor to the physical play cursor. */
                            if (physicalPlayCursorInBytes <= virtualWriteCursorInBytesPlayback) {
                                availableBytesPlayback  = (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) - virtualWriteCursorInBytesPlayback;
                                availableBytesPlayback += physicalPlayCursorInBytes;    /* Wrap around. */
                            } else {
                                /* This is an error. */
                                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[DirectSound] (Duplex/Playback): Play cursor has moved in front of the write cursor (same loop iteration). physicalPlayCursorInBytes=%ld, virtualWriteCursorInBytes=%ld.\n", physicalPlayCursorInBytes, virtualWriteCursorInBytesPlayback);
                                availableBytesPlayback = 0;
                            }
                        } else {
                            /* Different loop iterations. The available bytes only goes from the virtual write cursor to the physical play cursor. */
                            if (physicalPlayCursorInBytes >= virtualWriteCursorInBytesPlayback) {
                                availableBytesPlayback = physicalPlayCursorInBytes - virtualWriteCursorInBytesPlayback;
                            } else {
                                /* This is an error. */
                                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[DirectSound] (Duplex/Playback): Write cursor has moved behind the play cursor (different loop iterations). physicalPlayCursorInBytes=%ld, virtualWriteCursorInBytes=%ld.\n", physicalPlayCursorInBytes, virtualWriteCursorInBytesPlayback);
                                availableBytesPlayback = 0;
                            }
                        }

                        /* If there's no room available for writing we need to wait for more. */
                        if (availableBytesPlayback == 0) {
                            /* If we haven't started the device yet, this will never get beyond 0. In this case we need to get the device started. */
                            if (!isPlaybackDeviceStarted) {
                                hr = ma_IDirectSoundBuffer_Play((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, 0, 0, MA_DSBPLAY_LOOPING);
                                if (FAILED(hr)) {
                                    ma_IDirectSoundCaptureBuffer_Stop((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer);
                                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundBuffer_Play() failed.");
                                    return ma_result_from_HRESULT(hr);
                                }
                                isPlaybackDeviceStarted = MA_TRUE;
                            } else {
                                ma_sleep(waitTimeInMilliseconds);
                                continue;
                            }
                        }


                        /* Getting here means there room available somewhere. We limit this to either the end of the buffer or the physical play cursor, whichever is closest. */
                        lockOffsetInBytesPlayback = virtualWriteCursorInBytesPlayback;
                        if (physicalPlayCursorLoopFlagPlayback == virtualWriteCursorLoopFlagPlayback) {
                            /* Same loop iteration. Go up to the end of the buffer. */
                            lockSizeInBytesPlayback = (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) - virtualWriteCursorInBytesPlayback;
                        } else {
                            /* Different loop iterations. Go up to the physical play cursor. */
                            lockSizeInBytesPlayback = physicalPlayCursorInBytes - virtualWriteCursorInBytesPlayback;
                        }

                        hr = ma_IDirectSoundBuffer_Lock((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, lockOffsetInBytesPlayback, lockSizeInBytesPlayback, &pMappedDeviceBufferPlayback, &mappedSizeInBytesPlayback, NULL, NULL, 0);
                        if (FAILED(hr)) {
                            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to map buffer from playback device in preparation for writing to the device.");
                            result = ma_result_from_HRESULT(hr);
                            break;
                        }

                        /*
                        Experiment: If the playback buffer is being starved, pad it with some silence to get it back in sync. This will cause a glitch, but it may prevent
                        endless glitching due to it constantly running out of data.
                        */
                        if (isPlaybackDeviceStarted) {
                            DWORD bytesQueuedForPlayback = (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) - availableBytesPlayback;
                            if (bytesQueuedForPlayback < (pDevice->playback.internalPeriodSizeInFrames*bpfDevicePlayback)) {
                                silentPaddingInBytes   = (pDevice->playback.internalPeriodSizeInFrames*2*bpfDevicePlayback) - bytesQueuedForPlayback;
                                if (silentPaddingInBytes > lockSizeInBytesPlayback) {
                                    silentPaddingInBytes = lockSizeInBytesPlayback;
                                }

                                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[DirectSound] (Duplex/Playback) Playback buffer starved. availableBytesPlayback=%ld, silentPaddingInBytes=%ld\n", availableBytesPlayback, silentPaddingInBytes);
                            }
                        }

                        /* At this point we have a buffer for output. */
                        if (silentPaddingInBytes > 0) {
                            MA_ZERO_MEMORY(pMappedDeviceBufferPlayback, silentPaddingInBytes);
                            framesWrittenThisIteration = silentPaddingInBytes/bpfDevicePlayback;
                        } else {
                            ma_uint64 convertedFrameCountIn  = (outputFramesInClientFormatCount - outputFramesInClientFormatConsumed);
                            ma_uint64 convertedFrameCountOut = mappedSizeInBytesPlayback/bpfDevicePlayback;
                            void* pConvertedFramesIn  = ma_offset_ptr(outputFramesInClientFormat, outputFramesInClientFormatConsumed * bpfDevicePlayback);
                            void* pConvertedFramesOut = pMappedDeviceBufferPlayback;

                            result = ma_data_converter_process_pcm_frames(&pDevice->playback.converter, pConvertedFramesIn, &convertedFrameCountIn, pConvertedFramesOut, &convertedFrameCountOut);
                            if (result != MA_SUCCESS) {
                                break;
                            }

                            outputFramesInClientFormatConsumed += (ma_uint32)convertedFrameCountOut;
                            framesWrittenThisIteration          = (ma_uint32)convertedFrameCountOut;
                        }


                        hr = ma_IDirectSoundBuffer_Unlock((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, pMappedDeviceBufferPlayback, framesWrittenThisIteration*bpfDevicePlayback, NULL, 0);
                        if (FAILED(hr)) {
                            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to unlock internal buffer from playback device after writing to the device.");
                            result = ma_result_from_HRESULT(hr);
                            break;
                        }

                        virtualWriteCursorInBytesPlayback += framesWrittenThisIteration*bpfDevicePlayback;
                        if ((virtualWriteCursorInBytesPlayback/bpfDevicePlayback) == pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods) {
                            virtualWriteCursorInBytesPlayback  = 0;
                            virtualWriteCursorLoopFlagPlayback = !virtualWriteCursorLoopFlagPlayback;
                        }

                        /*
                        We may need to start the device. We want two full periods to be written before starting the playback device. Having an extra period adds
                        a bit of a buffer to prevent the playback buffer from getting starved.
                        */
                        framesWrittenToPlaybackDevice += framesWrittenThisIteration;
                        if (!isPlaybackDeviceStarted && framesWrittenToPlaybackDevice >= (pDevice->playback.internalPeriodSizeInFrames*2)) {
                            hr = ma_IDirectSoundBuffer_Play((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, 0, 0, MA_DSBPLAY_LOOPING);
                            if (FAILED(hr)) {
                                ma_IDirectSoundCaptureBuffer_Stop((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer);
                                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundBuffer_Play() failed.");
                                return ma_result_from_HRESULT(hr);
                            }
                            isPlaybackDeviceStarted = MA_TRUE;
                        }

                        if (framesWrittenThisIteration < mappedSizeInBytesPlayback/bpfDevicePlayback) {
                            break;  /* We're finished with the output data.*/
                        }
                    }

                    if (clientCapturedFramesToProcess == 0) {
                        break;  /* We just consumed every input sample. */
                    }
                }


                /* At this point we're done with the mapped portion of the capture buffer. */
                hr = ma_IDirectSoundCaptureBuffer_Unlock((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, pMappedDeviceBufferCapture, mappedSizeInBytesCapture, NULL, 0);
                if (FAILED(hr)) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to unlock internal buffer from capture device after reading from the device.");
                    return ma_result_from_HRESULT(hr);
                }
                prevReadCursorInBytesCapture = (lockOffsetInBytesCapture + mappedSizeInBytesCapture);
            } break;



            case ma_device_type_capture:
            {
                DWORD physicalCaptureCursorInBytes;
                DWORD physicalReadCursorInBytes;
                hr = ma_IDirectSoundCaptureBuffer_GetCurrentPosition((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, &physicalCaptureCursorInBytes, &physicalReadCursorInBytes);
                if (FAILED(hr)) {
                    return MA_ERROR;
                }

                /* If the previous capture position is the same as the current position we need to wait a bit longer. */
                if (prevReadCursorInBytesCapture == physicalReadCursorInBytes) {
                    ma_sleep(waitTimeInMilliseconds);
                    continue;
                }

                /* Getting here means we have capture data available. */
                if (prevReadCursorInBytesCapture < physicalReadCursorInBytes) {
                    /* The capture position has not looped. This is the simple case. */
                    lockOffsetInBytesCapture = prevReadCursorInBytesCapture;
                    lockSizeInBytesCapture   = (physicalReadCursorInBytes - prevReadCursorInBytesCapture);
                } else {
                    /*
                    The capture position has looped. This is the more complex case. Map to the end of the buffer. If this does not return anything,
                    do it again from the start.
                    */
                    if (prevReadCursorInBytesCapture < pDevice->capture.internalPeriodSizeInFrames*pDevice->capture.internalPeriods*bpfDeviceCapture) {
                        /* Lock up to the end of the buffer. */
                        lockOffsetInBytesCapture = prevReadCursorInBytesCapture;
                        lockSizeInBytesCapture   = (pDevice->capture.internalPeriodSizeInFrames*pDevice->capture.internalPeriods*bpfDeviceCapture) - prevReadCursorInBytesCapture;
                    } else {
                        /* Lock starting from the start of the buffer. */
                        lockOffsetInBytesCapture = 0;
                        lockSizeInBytesCapture   = physicalReadCursorInBytes;
                    }
                }

                if (lockSizeInBytesCapture < pDevice->capture.internalPeriodSizeInFrames) {
                    ma_sleep(waitTimeInMilliseconds);
                    continue; /* Nothing is available in the capture buffer. */
                }

                hr = ma_IDirectSoundCaptureBuffer_Lock((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, lockOffsetInBytesCapture, lockSizeInBytesCapture, &pMappedDeviceBufferCapture, &mappedSizeInBytesCapture, NULL, NULL, 0);
                if (FAILED(hr)) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to map buffer from capture device in preparation for writing to the device.");
                    result = ma_result_from_HRESULT(hr);
                }

                if (lockSizeInBytesCapture != mappedSizeInBytesCapture) {
                    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[DirectSound] (Capture) lockSizeInBytesCapture=%ld != mappedSizeInBytesCapture=%ld\n", lockSizeInBytesCapture, mappedSizeInBytesCapture);
                }

                ma_device__send_frames_to_client(pDevice, mappedSizeInBytesCapture/bpfDeviceCapture, pMappedDeviceBufferCapture);

                hr = ma_IDirectSoundCaptureBuffer_Unlock((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer, pMappedDeviceBufferCapture, mappedSizeInBytesCapture, NULL, 0);
                if (FAILED(hr)) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to unlock internal buffer from capture device after reading from the device.");
                    return ma_result_from_HRESULT(hr);
                }
                prevReadCursorInBytesCapture = lockOffsetInBytesCapture + mappedSizeInBytesCapture;

                if (prevReadCursorInBytesCapture == (pDevice->capture.internalPeriodSizeInFrames*pDevice->capture.internalPeriods*bpfDeviceCapture)) {
                    prevReadCursorInBytesCapture = 0;
                }
            } break;



            case ma_device_type_playback:
            {
                DWORD availableBytesPlayback;
                DWORD physicalPlayCursorInBytes;
                DWORD physicalWriteCursorInBytes;
                hr = ma_IDirectSoundBuffer_GetCurrentPosition((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, &physicalPlayCursorInBytes, &physicalWriteCursorInBytes);
                if (FAILED(hr)) {
                    break;
                }

                hr = ma_IDirectSoundBuffer_GetStatus((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, &playbackBufferStatus);
                if (SUCCEEDED(hr) && (playbackBufferStatus & MA_DSBSTATUS_PLAYING) == 0 && isPlaybackDeviceStarted) {
                    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[DirectSound] Attempting to resume audio due to state: %d.", (int)playbackBufferStatus);
                    hr = ma_IDirectSoundBuffer_Play((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, 0, 0, MA_DSBPLAY_LOOPING);
                    if (FAILED(hr)) {
                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundBuffer_Play() failed after attempting to resume from state %d.", (int)playbackBufferStatus);
                        return ma_result_from_HRESULT(hr);
                    }

                    isPlaybackDeviceStarted = MA_TRUE;
                    ma_sleep(waitTimeInMilliseconds);
                    continue;
                }

                if (physicalPlayCursorInBytes < prevPlayCursorInBytesPlayback) {
                    physicalPlayCursorLoopFlagPlayback = !physicalPlayCursorLoopFlagPlayback;
                }
                prevPlayCursorInBytesPlayback  = physicalPlayCursorInBytes;

                /* If there's any bytes available for writing we can do that now. The space between the virtual cursor position and play cursor. */
                if (physicalPlayCursorLoopFlagPlayback == virtualWriteCursorLoopFlagPlayback) {
                    /* Same loop iteration. The available bytes wraps all the way around from the virtual write cursor to the physical play cursor. */
                    if (physicalPlayCursorInBytes <= virtualWriteCursorInBytesPlayback) {
                        availableBytesPlayback  = (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) - virtualWriteCursorInBytesPlayback;
                        availableBytesPlayback += physicalPlayCursorInBytes;    /* Wrap around. */
                    } else {
                        /* This is an error. */
                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[DirectSound] (Playback): Play cursor has moved in front of the write cursor (same loop iterations). physicalPlayCursorInBytes=%ld, virtualWriteCursorInBytes=%ld.\n", physicalPlayCursorInBytes, virtualWriteCursorInBytesPlayback);
                        availableBytesPlayback = 0;
                    }
                } else {
                    /* Different loop iterations. The available bytes only goes from the virtual write cursor to the physical play cursor. */
                    if (physicalPlayCursorInBytes >= virtualWriteCursorInBytesPlayback) {
                        availableBytesPlayback = physicalPlayCursorInBytes - virtualWriteCursorInBytesPlayback;
                    } else {
                        /* This is an error. */
                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[DirectSound] (Playback): Write cursor has moved behind the play cursor (different loop iterations). physicalPlayCursorInBytes=%ld, virtualWriteCursorInBytes=%ld.\n", physicalPlayCursorInBytes, virtualWriteCursorInBytesPlayback);
                        availableBytesPlayback = 0;
                    }
                }

                /* If there's no room available for writing we need to wait for more. */
                if (availableBytesPlayback < pDevice->playback.internalPeriodSizeInFrames) {
                    /* If we haven't started the device yet, this will never get beyond 0. In this case we need to get the device started. */
                    if (availableBytesPlayback == 0 && !isPlaybackDeviceStarted) {
                        hr = ma_IDirectSoundBuffer_Play((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, 0, 0, MA_DSBPLAY_LOOPING);
                        if (FAILED(hr)) {
                            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundBuffer_Play() failed.");
                            return ma_result_from_HRESULT(hr);
                        }
                        isPlaybackDeviceStarted = MA_TRUE;
                    } else {
                        ma_sleep(waitTimeInMilliseconds);
                        continue;
                    }
                }

                /* Getting here means there room available somewhere. We limit this to either the end of the buffer or the physical play cursor, whichever is closest. */
                lockOffsetInBytesPlayback = virtualWriteCursorInBytesPlayback;
                if (physicalPlayCursorLoopFlagPlayback == virtualWriteCursorLoopFlagPlayback) {
                    /* Same loop iteration. Go up to the end of the buffer. */
                    lockSizeInBytesPlayback = (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) - virtualWriteCursorInBytesPlayback;
                } else {
                    /* Different loop iterations. Go up to the physical play cursor. */
                    lockSizeInBytesPlayback = physicalPlayCursorInBytes - virtualWriteCursorInBytesPlayback;
                }

                hr = ma_IDirectSoundBuffer_Lock((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, lockOffsetInBytesPlayback, lockSizeInBytesPlayback, &pMappedDeviceBufferPlayback, &mappedSizeInBytesPlayback, NULL, NULL, 0);
                if (FAILED(hr)) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to map buffer from playback device in preparation for writing to the device.");
                    result = ma_result_from_HRESULT(hr);
                    break;
                }

                /* At this point we have a buffer for output. */
                ma_device__read_frames_from_client(pDevice, (mappedSizeInBytesPlayback/bpfDevicePlayback), pMappedDeviceBufferPlayback);

                hr = ma_IDirectSoundBuffer_Unlock((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, pMappedDeviceBufferPlayback, mappedSizeInBytesPlayback, NULL, 0);
                if (FAILED(hr)) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] Failed to unlock internal buffer from playback device after writing to the device.");
                    result = ma_result_from_HRESULT(hr);
                    break;
                }

                virtualWriteCursorInBytesPlayback += mappedSizeInBytesPlayback;
                if (virtualWriteCursorInBytesPlayback == pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) {
                    virtualWriteCursorInBytesPlayback  = 0;
                    virtualWriteCursorLoopFlagPlayback = !virtualWriteCursorLoopFlagPlayback;
                }

                /*
                We may need to start the device. We want two full periods to be written before starting the playback device. Having an extra period adds
                a bit of a buffer to prevent the playback buffer from getting starved.
                */
                framesWrittenToPlaybackDevice += mappedSizeInBytesPlayback/bpfDevicePlayback;
                if (!isPlaybackDeviceStarted && framesWrittenToPlaybackDevice >= pDevice->playback.internalPeriodSizeInFrames) {
                    hr = ma_IDirectSoundBuffer_Play((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, 0, 0, MA_DSBPLAY_LOOPING);
                    if (FAILED(hr)) {
                        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundBuffer_Play() failed.");
                        return ma_result_from_HRESULT(hr);
                    }
                    isPlaybackDeviceStarted = MA_TRUE;
                }
            } break;


            default: return MA_INVALID_ARGS;   /* Invalid device type. */
        }

        if (result != MA_SUCCESS) {
            return result;
        }
    }

    /* Getting here means the device is being stopped. */
    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        hr = ma_IDirectSoundCaptureBuffer_Stop((ma_IDirectSoundCaptureBuffer*)pDevice->dsound.pCaptureBuffer);
        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundCaptureBuffer_Stop() failed.");
            return ma_result_from_HRESULT(hr);
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        /* The playback device should be drained before stopping. All we do is wait until the available bytes is equal to the size of the buffer. */
        if (isPlaybackDeviceStarted) {
            for (;;) {
                DWORD availableBytesPlayback = 0;
                DWORD physicalPlayCursorInBytes;
                DWORD physicalWriteCursorInBytes;
                hr = ma_IDirectSoundBuffer_GetCurrentPosition((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, &physicalPlayCursorInBytes, &physicalWriteCursorInBytes);
                if (FAILED(hr)) {
                    break;
                }

                if (physicalPlayCursorInBytes < prevPlayCursorInBytesPlayback) {
                    physicalPlayCursorLoopFlagPlayback = !physicalPlayCursorLoopFlagPlayback;
                }
                prevPlayCursorInBytesPlayback  = physicalPlayCursorInBytes;

                if (physicalPlayCursorLoopFlagPlayback == virtualWriteCursorLoopFlagPlayback) {
                    /* Same loop iteration. The available bytes wraps all the way around from the virtual write cursor to the physical play cursor. */
                    if (physicalPlayCursorInBytes <= virtualWriteCursorInBytesPlayback) {
                        availableBytesPlayback  = (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback) - virtualWriteCursorInBytesPlayback;
                        availableBytesPlayback += physicalPlayCursorInBytes;    /* Wrap around. */
                    } else {
                        break;
                    }
                } else {
                    /* Different loop iterations. The available bytes only goes from the virtual write cursor to the physical play cursor. */
                    if (physicalPlayCursorInBytes >= virtualWriteCursorInBytesPlayback) {
                        availableBytesPlayback = physicalPlayCursorInBytes - virtualWriteCursorInBytesPlayback;
                    } else {
                        break;
                    }
                }

                if (availableBytesPlayback >= (pDevice->playback.internalPeriodSizeInFrames*pDevice->playback.internalPeriods*bpfDevicePlayback)) {
                    break;
                }

                ma_sleep(waitTimeInMilliseconds);
            }
        }

        hr = ma_IDirectSoundBuffer_Stop((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer);
        if (FAILED(hr)) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[DirectSound] IDirectSoundBuffer_Stop() failed.");
            return ma_result_from_HRESULT(hr);
        }

        ma_IDirectSoundBuffer_SetCurrentPosition((ma_IDirectSoundBuffer*)pDevice->dsound.pPlaybackBuffer, 0);
    }

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__dsound(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_dsound);

    ma_dlclose(ma_context_get_log(pContext), pContext->dsound.hDSoundDLL);

    return MA_SUCCESS;
}

static ma_result ma_context_init__dsound(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    MA_ASSERT(pContext != NULL);

    (void)pConfig;

    pContext->dsound.hDSoundDLL = ma_dlopen(ma_context_get_log(pContext), "dsound.dll");
    if (pContext->dsound.hDSoundDLL == NULL) {
        return MA_API_NOT_FOUND;
    }

    pContext->dsound.DirectSoundCreate            = ma_dlsym(ma_context_get_log(pContext), pContext->dsound.hDSoundDLL, "DirectSoundCreate");
    pContext->dsound.DirectSoundEnumerateA        = ma_dlsym(ma_context_get_log(pContext), pContext->dsound.hDSoundDLL, "DirectSoundEnumerateA");
    pContext->dsound.DirectSoundCaptureCreate     = ma_dlsym(ma_context_get_log(pContext), pContext->dsound.hDSoundDLL, "DirectSoundCaptureCreate");
    pContext->dsound.DirectSoundCaptureEnumerateA = ma_dlsym(ma_context_get_log(pContext), pContext->dsound.hDSoundDLL, "DirectSoundCaptureEnumerateA");

    /*
    We need to support all functions or nothing. DirectSound with Windows 95 seems to not work too
    well in my testing. For example, it's missing DirectSoundCaptureEnumerateA(). This is a convenient
    place to just disable the DirectSound backend for Windows 95.
    */
    if (pContext->dsound.DirectSoundCreate            == NULL ||
        pContext->dsound.DirectSoundEnumerateA        == NULL ||
        pContext->dsound.DirectSoundCaptureCreate     == NULL ||
        pContext->dsound.DirectSoundCaptureEnumerateA == NULL) {
        return MA_API_NOT_FOUND;
    }

    pContext->dsound.hWnd = pConfig->dsound.hWnd;

    pCallbacks->onContextInit             = ma_context_init__dsound;
    pCallbacks->onContextUninit           = ma_context_uninit__dsound;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__dsound;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__dsound;
    pCallbacks->onDeviceInit              = ma_device_init__dsound;
    pCallbacks->onDeviceUninit            = ma_device_uninit__dsound;
    pCallbacks->onDeviceStart             = NULL;   /* Not used. Started in onDeviceDataLoop. */
    pCallbacks->onDeviceStop              = NULL;   /* Not used. Stopped in onDeviceDataLoop. */
    pCallbacks->onDeviceRead              = NULL;   /* Not used. Data is read directly in onDeviceDataLoop. */
    pCallbacks->onDeviceWrite             = NULL;   /* Not used. Data is written directly in onDeviceDataLoop. */
    pCallbacks->onDeviceDataLoop          = ma_device_data_loop__dsound;

    return MA_SUCCESS;
}
#endif



/******************************************************************************

WinMM Backend

******************************************************************************/
#ifdef MA_HAS_WINMM

/*
Some build configurations will exclude the WinMM API. An example is when WIN32_LEAN_AND_MEAN
is defined. We need to define the types and functions we need manually.
*/
#define MA_MMSYSERR_NOERROR     0
#define MA_MMSYSERR_ERROR       1
#define MA_MMSYSERR_BADDEVICEID 2
#define MA_MMSYSERR_INVALHANDLE 5
#define MA_MMSYSERR_NOMEM       7
#define MA_MMSYSERR_INVALFLAG   10
#define MA_MMSYSERR_INVALPARAM  11
#define MA_MMSYSERR_HANDLEBUSY  12

#define MA_CALLBACK_EVENT       0x00050000
#define MA_WAVE_ALLOWSYNC       0x0002

#define MA_WHDR_DONE            0x00000001
#define MA_WHDR_PREPARED        0x00000002
#define MA_WHDR_BEGINLOOP       0x00000004
#define MA_WHDR_ENDLOOP         0x00000008
#define MA_WHDR_INQUEUE         0x00000010

#define MA_MAXPNAMELEN          32

typedef void* MA_HWAVEIN;
typedef void* MA_HWAVEOUT;
typedef UINT MA_MMRESULT;
typedef UINT MA_MMVERSION;

typedef struct
{
    WORD wMid;
    WORD wPid;
    MA_MMVERSION vDriverVersion;
    CHAR szPname[MA_MAXPNAMELEN];
    DWORD dwFormats;
    WORD wChannels;
    WORD wReserved1;
} MA_WAVEINCAPSA;

typedef struct
{
    WORD wMid;
    WORD wPid;
    MA_MMVERSION vDriverVersion;
    CHAR szPname[MA_MAXPNAMELEN];
    DWORD dwFormats;
    WORD wChannels;
    WORD wReserved1;
    DWORD dwSupport;
} MA_WAVEOUTCAPSA;

typedef struct tagWAVEHDR
{
    char* lpData;
    DWORD dwBufferLength;
    DWORD dwBytesRecorded;
    DWORD_PTR dwUser;
    DWORD dwFlags;
    DWORD dwLoops;
    struct tagWAVEHDR* lpNext;
    DWORD_PTR reserved;
} MA_WAVEHDR;

typedef struct
{
    WORD wMid;
    WORD wPid;
    MA_MMVERSION vDriverVersion;
    CHAR szPname[MA_MAXPNAMELEN];
    DWORD dwFormats;
    WORD wChannels;
    WORD wReserved1;
    DWORD dwSupport;
    GUID ManufacturerGuid;
    GUID ProductGuid;
    GUID NameGuid;
} MA_WAVEOUTCAPS2A;

typedef struct
{
    WORD wMid;
    WORD wPid;
    MA_MMVERSION vDriverVersion;
    CHAR szPname[MA_MAXPNAMELEN];
    DWORD dwFormats;
    WORD wChannels;
    WORD wReserved1;
    GUID ManufacturerGuid;
    GUID ProductGuid;
    GUID NameGuid;
} MA_WAVEINCAPS2A;

typedef UINT        (WINAPI * MA_PFN_waveOutGetNumDevs)(void);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutGetDevCapsA)(ma_uintptr uDeviceID, MA_WAVEOUTCAPSA* pwoc, UINT cbwoc);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutOpen)(MA_HWAVEOUT* phwo, UINT uDeviceID, const MA_WAVEFORMATEX* pwfx, DWORD_PTR dwCallback, DWORD_PTR dwInstance, DWORD fdwOpen);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutClose)(MA_HWAVEOUT hwo);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutPrepareHeader)(MA_HWAVEOUT hwo, MA_WAVEHDR* pwh, UINT cbwh);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutUnprepareHeader)(MA_HWAVEOUT hwo, MA_WAVEHDR* pwh, UINT cbwh);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutWrite)(MA_HWAVEOUT hwo, MA_WAVEHDR* pwh, UINT cbwh);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveOutReset)(MA_HWAVEOUT hwo);
typedef UINT        (WINAPI * MA_PFN_waveInGetNumDevs)(void);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInGetDevCapsA)(ma_uintptr uDeviceID, MA_WAVEINCAPSA* pwic, UINT cbwic);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInOpen)(MA_HWAVEIN* phwi, UINT uDeviceID, const MA_WAVEFORMATEX* pwfx, DWORD_PTR dwCallback, DWORD_PTR dwInstance, DWORD fdwOpen);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInClose)(MA_HWAVEIN hwi);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInPrepareHeader)(MA_HWAVEIN hwi, MA_WAVEHDR* pwh, UINT cbwh);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInUnprepareHeader)(MA_HWAVEIN hwi, MA_WAVEHDR* pwh, UINT cbwh);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInAddBuffer)(MA_HWAVEIN hwi, MA_WAVEHDR* pwh, UINT cbwh);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInStart)(MA_HWAVEIN hwi);
typedef MA_MMRESULT (WINAPI * MA_PFN_waveInReset)(MA_HWAVEIN hwi);

static ma_result ma_result_from_MMRESULT(MA_MMRESULT resultMM)
{
    switch (resultMM)
    {
        case MA_MMSYSERR_NOERROR:       return MA_SUCCESS;
        case MA_MMSYSERR_BADDEVICEID:   return MA_INVALID_ARGS;
        case MA_MMSYSERR_INVALHANDLE:   return MA_INVALID_ARGS;
        case MA_MMSYSERR_NOMEM:         return MA_OUT_OF_MEMORY;
        case MA_MMSYSERR_INVALFLAG:     return MA_INVALID_ARGS;
        case MA_MMSYSERR_INVALPARAM:    return MA_INVALID_ARGS;
        case MA_MMSYSERR_HANDLEBUSY:    return MA_BUSY;
        case MA_MMSYSERR_ERROR:         return MA_ERROR;
        default:                        return MA_ERROR;
    }
}

static char* ma_find_last_character(char* str, char ch)
{
    char* last;

    if (str == NULL) {
        return NULL;
    }

    last = NULL;
    while (*str != '\0') {
        if (*str == ch) {
            last = str;
        }

        str += 1;
    }

    return last;
}

static ma_uint32 ma_get_period_size_in_bytes(ma_uint32 periodSizeInFrames, ma_format format, ma_uint32 channels)
{
    return periodSizeInFrames * ma_get_bytes_per_frame(format, channels);
}


/*
Our own "WAVECAPS" structure that contains generic information shared between WAVEOUTCAPS2 and WAVEINCAPS2 so
we can do things generically and typesafely. Names are being kept the same for consistency.
*/
typedef struct
{
    CHAR szPname[MA_MAXPNAMELEN];
    DWORD dwFormats;
    WORD wChannels;
    GUID NameGuid;
} MA_WAVECAPSA;

static ma_result ma_get_best_info_from_formats_flags__winmm(DWORD dwFormats, WORD channels, WORD* pBitsPerSample, DWORD* pSampleRate)
{
    WORD bitsPerSample = 0;
    DWORD sampleRate = 0;

    if (pBitsPerSample) {
        *pBitsPerSample = 0;
    }
    if (pSampleRate) {
        *pSampleRate = 0;
    }

    if (channels == 1) {
        bitsPerSample = 16;
        if ((dwFormats & WAVE_FORMAT_48M16) != 0) {
            sampleRate = 48000;
        } else if ((dwFormats & WAVE_FORMAT_44M16) != 0) {
            sampleRate = 44100;
        } else if ((dwFormats & WAVE_FORMAT_2M16) != 0) {
            sampleRate = 22050;
        } else if ((dwFormats & WAVE_FORMAT_1M16) != 0) {
            sampleRate = 11025;
        } else if ((dwFormats & WAVE_FORMAT_96M16) != 0) {
            sampleRate = 96000;
        } else {
            bitsPerSample = 8;
            if ((dwFormats & WAVE_FORMAT_48M08) != 0) {
                sampleRate = 48000;
            } else if ((dwFormats & WAVE_FORMAT_44M08) != 0) {
                sampleRate = 44100;
            } else if ((dwFormats & WAVE_FORMAT_2M08) != 0) {
                sampleRate = 22050;
            } else if ((dwFormats & WAVE_FORMAT_1M08) != 0) {
                sampleRate = 11025;
            } else if ((dwFormats & WAVE_FORMAT_96M08) != 0) {
                sampleRate = 96000;
            } else {
                return MA_FORMAT_NOT_SUPPORTED;
            }
        }
    } else {
        bitsPerSample = 16;
        if ((dwFormats & WAVE_FORMAT_48S16) != 0) {
            sampleRate = 48000;
        } else if ((dwFormats & WAVE_FORMAT_44S16) != 0) {
            sampleRate = 44100;
        } else if ((dwFormats & WAVE_FORMAT_2S16) != 0) {
            sampleRate = 22050;
        } else if ((dwFormats & WAVE_FORMAT_1S16) != 0) {
            sampleRate = 11025;
        } else if ((dwFormats & WAVE_FORMAT_96S16) != 0) {
            sampleRate = 96000;
        } else {
            bitsPerSample = 8;
            if ((dwFormats & WAVE_FORMAT_48S08) != 0) {
                sampleRate = 48000;
            } else if ((dwFormats & WAVE_FORMAT_44S08) != 0) {
                sampleRate = 44100;
            } else if ((dwFormats & WAVE_FORMAT_2S08) != 0) {
                sampleRate = 22050;
            } else if ((dwFormats & WAVE_FORMAT_1S08) != 0) {
                sampleRate = 11025;
            } else if ((dwFormats & WAVE_FORMAT_96S08) != 0) {
                sampleRate = 96000;
            } else {
                return MA_FORMAT_NOT_SUPPORTED;
            }
        }
    }

    if (pBitsPerSample) {
        *pBitsPerSample = bitsPerSample;
    }
    if (pSampleRate) {
        *pSampleRate = sampleRate;
    }

    return MA_SUCCESS;
}

static ma_result ma_formats_flags_to_WAVEFORMATEX__winmm(DWORD dwFormats, WORD channels, MA_WAVEFORMATEX* pWF)
{
    ma_result result;

    MA_ASSERT(pWF != NULL);

    MA_ZERO_OBJECT(pWF);
    pWF->cbSize     = sizeof(*pWF);
    pWF->wFormatTag = WAVE_FORMAT_PCM;
    pWF->nChannels  = (WORD)channels;
    if (pWF->nChannels > 2) {
        pWF->nChannels = 2;
    }

    result = ma_get_best_info_from_formats_flags__winmm(dwFormats, channels, &pWF->wBitsPerSample, &pWF->nSamplesPerSec);
    if (result != MA_SUCCESS) {
        return result;
    }

    pWF->nBlockAlign     = (WORD)(pWF->nChannels * pWF->wBitsPerSample / 8);
    pWF->nAvgBytesPerSec = pWF->nBlockAlign * pWF->nSamplesPerSec;

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info_from_WAVECAPS(ma_context* pContext, MA_WAVECAPSA* pCaps, ma_device_info* pDeviceInfo)
{
    WORD bitsPerSample;
    DWORD sampleRate;
    ma_result result;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pCaps != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    /*
    Name / Description

    Unfortunately the name specified in WAVE(OUT/IN)CAPS2 is limited to 31 characters. This results in an unprofessional looking
    situation where the names of the devices are truncated. To help work around this, we need to look at the name GUID and try
    looking in the registry for the full name. If we can't find it there, we need to just fall back to the default name.
    */

    /* Set the default to begin with. */
    ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), pCaps->szPname, (size_t)-1);

    /*
    Now try the registry. There's a few things to consider here:
    - The name GUID can be null, in which we case we just need to stick to the original 31 characters.
    - If the name GUID is not present in the registry we'll also need to stick to the original 31 characters.
    - I like consistency, so I want the returned device names to be consistent with those returned by WASAPI and DirectSound. The
      problem, however is that WASAPI and DirectSound use "<component> (<name>)" format (such as "Speakers (High Definition Audio)"),
      but WinMM does not specify the component name. From my admittedly limited testing, I've notice the component name seems to
      usually fit within the 31 characters of the fixed sized buffer, so what I'm going to do is parse that string for the component
      name, and then concatenate the name from the registry.
    */
    if (!ma_is_guid_null(&pCaps->NameGuid)) {
        WCHAR guidStrW[256];
        if (((MA_PFN_StringFromGUID2)pContext->win32.StringFromGUID2)(&pCaps->NameGuid, guidStrW, ma_countof(guidStrW)) > 0) {
            char guidStr[256];
            char keyStr[1024];
            HKEY hKey;

            WideCharToMultiByte(CP_UTF8, 0, guidStrW, -1, guidStr, sizeof(guidStr), 0, FALSE);

            ma_strcpy_s(keyStr, sizeof(keyStr), "SYSTEM\\CurrentControlSet\\Control\\MediaCategories\\");
            ma_strcat_s(keyStr, sizeof(keyStr), guidStr);

            if (((MA_PFN_RegOpenKeyExA)pContext->win32.RegOpenKeyExA)(HKEY_LOCAL_MACHINE, keyStr, 0, KEY_READ, &hKey) == ERROR_SUCCESS) {
                BYTE nameFromReg[512];
                DWORD nameFromRegSize = sizeof(nameFromReg);
                LONG resultWin32 = ((MA_PFN_RegQueryValueExA)pContext->win32.RegQueryValueExA)(hKey, "Name", 0, NULL, (BYTE*)nameFromReg, (DWORD*)&nameFromRegSize);
                ((MA_PFN_RegCloseKey)pContext->win32.RegCloseKey)(hKey);

                if (resultWin32 == ERROR_SUCCESS) {
                    /* We have the value from the registry, so now we need to construct the name string. */
                    char name[1024];
                    if (ma_strcpy_s(name, sizeof(name), pDeviceInfo->name) == 0) {
                        char* nameBeg = ma_find_last_character(name, '(');
                        if (nameBeg != NULL) {
                            size_t leadingLen = (nameBeg - name);
                            ma_strncpy_s(nameBeg + 1, sizeof(name) - leadingLen, (const char*)nameFromReg, (size_t)-1);

                            /* The closing ")", if it can fit. */
                            if (leadingLen + nameFromRegSize < sizeof(name)-1) {
                                ma_strcat_s(name, sizeof(name), ")");
                            }

                            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), name, (size_t)-1);
                        }
                    }
                }
            }
        }
    }


    result = ma_get_best_info_from_formats_flags__winmm(pCaps->dwFormats, pCaps->wChannels, &bitsPerSample, &sampleRate);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (bitsPerSample == 8) {
        pDeviceInfo->nativeDataFormats[0].format = ma_format_u8;
    } else if (bitsPerSample == 16) {
        pDeviceInfo->nativeDataFormats[0].format = ma_format_s16;
    } else if (bitsPerSample == 24) {
        pDeviceInfo->nativeDataFormats[0].format = ma_format_s24;
    } else if (bitsPerSample == 32) {
        pDeviceInfo->nativeDataFormats[0].format = ma_format_s32;
    } else {
        return MA_FORMAT_NOT_SUPPORTED;
    }
    pDeviceInfo->nativeDataFormats[0].channels   = pCaps->wChannels;
    pDeviceInfo->nativeDataFormats[0].sampleRate = sampleRate;
    pDeviceInfo->nativeDataFormats[0].flags      = 0;
    pDeviceInfo->nativeDataFormatCount = 1;

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info_from_WAVEOUTCAPS2(ma_context* pContext, MA_WAVEOUTCAPS2A* pCaps, ma_device_info* pDeviceInfo)
{
    MA_WAVECAPSA caps;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pCaps != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    MA_COPY_MEMORY(caps.szPname, pCaps->szPname, sizeof(caps.szPname));
    caps.dwFormats = pCaps->dwFormats;
    caps.wChannels = pCaps->wChannels;
    caps.NameGuid  = pCaps->NameGuid;
    return ma_context_get_device_info_from_WAVECAPS(pContext, &caps, pDeviceInfo);
}

static ma_result ma_context_get_device_info_from_WAVEINCAPS2(ma_context* pContext, MA_WAVEINCAPS2A* pCaps, ma_device_info* pDeviceInfo)
{
    MA_WAVECAPSA caps;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pCaps != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    MA_COPY_MEMORY(caps.szPname, pCaps->szPname, sizeof(caps.szPname));
    caps.dwFormats = pCaps->dwFormats;
    caps.wChannels = pCaps->wChannels;
    caps.NameGuid  = pCaps->NameGuid;
    return ma_context_get_device_info_from_WAVECAPS(pContext, &caps, pDeviceInfo);
}


static ma_result ma_context_enumerate_devices__winmm(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    UINT playbackDeviceCount;
    UINT captureDeviceCount;
    UINT iPlaybackDevice;
    UINT iCaptureDevice;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* Playback. */
    playbackDeviceCount = ((MA_PFN_waveOutGetNumDevs)pContext->winmm.waveOutGetNumDevs)();
    for (iPlaybackDevice = 0; iPlaybackDevice < playbackDeviceCount; ++iPlaybackDevice) {
        MA_MMRESULT result;
        MA_WAVEOUTCAPS2A caps;

        MA_ZERO_OBJECT(&caps);

        result = ((MA_PFN_waveOutGetDevCapsA)pContext->winmm.waveOutGetDevCapsA)(iPlaybackDevice, (MA_WAVEOUTCAPSA*)&caps, sizeof(caps));
        if (result == MA_MMSYSERR_NOERROR) {
            ma_device_info deviceInfo;

            MA_ZERO_OBJECT(&deviceInfo);
            deviceInfo.id.winmm = iPlaybackDevice;

            /* The first enumerated device is the default device. */
            if (iPlaybackDevice == 0) {
                deviceInfo.isDefault = MA_TRUE;
            }

            if (ma_context_get_device_info_from_WAVEOUTCAPS2(pContext, &caps, &deviceInfo) == MA_SUCCESS) {
                ma_bool32 cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
                if (cbResult == MA_FALSE) {
                    return MA_SUCCESS; /* Enumeration was stopped. */
                }
            }
        }
    }

    /* Capture. */
    captureDeviceCount = ((MA_PFN_waveInGetNumDevs)pContext->winmm.waveInGetNumDevs)();
    for (iCaptureDevice = 0; iCaptureDevice < captureDeviceCount; ++iCaptureDevice) {
        MA_MMRESULT result;
        MA_WAVEINCAPS2A caps;

        MA_ZERO_OBJECT(&caps);

        result = ((MA_PFN_waveInGetDevCapsA)pContext->winmm.waveInGetDevCapsA)(iCaptureDevice, (MA_WAVEINCAPSA*)&caps, sizeof(caps));
        if (result == MA_MMSYSERR_NOERROR) {
            ma_device_info deviceInfo;

            MA_ZERO_OBJECT(&deviceInfo);
            deviceInfo.id.winmm = iCaptureDevice;

            /* The first enumerated device is the default device. */
            if (iCaptureDevice == 0) {
                deviceInfo.isDefault = MA_TRUE;
            }

            if (ma_context_get_device_info_from_WAVEINCAPS2(pContext, &caps, &deviceInfo) == MA_SUCCESS) {
                ma_bool32 cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
                if (cbResult == MA_FALSE) {
                    return MA_SUCCESS; /* Enumeration was stopped. */
                }
            }
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__winmm(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    UINT winMMDeviceID;

    MA_ASSERT(pContext != NULL);

    winMMDeviceID = 0;
    if (pDeviceID != NULL) {
        winMMDeviceID = (UINT)pDeviceID->winmm;
    }

    pDeviceInfo->id.winmm = winMMDeviceID;

    /* The first ID is the default device. */
    if (winMMDeviceID == 0) {
        pDeviceInfo->isDefault = MA_TRUE;
    }

    if (deviceType == ma_device_type_playback) {
        MA_MMRESULT result;
        MA_WAVEOUTCAPS2A caps;

        MA_ZERO_OBJECT(&caps);

        result = ((MA_PFN_waveOutGetDevCapsA)pContext->winmm.waveOutGetDevCapsA)(winMMDeviceID, (MA_WAVEOUTCAPSA*)&caps, sizeof(caps));
        if (result == MA_MMSYSERR_NOERROR) {
            return ma_context_get_device_info_from_WAVEOUTCAPS2(pContext, &caps, pDeviceInfo);
        }
    } else {
        MA_MMRESULT result;
        MA_WAVEINCAPS2A caps;

        MA_ZERO_OBJECT(&caps);

        result = ((MA_PFN_waveInGetDevCapsA)pContext->winmm.waveInGetDevCapsA)(winMMDeviceID, (MA_WAVEINCAPSA*)&caps, sizeof(caps));
        if (result == MA_MMSYSERR_NOERROR) {
            return ma_context_get_device_info_from_WAVEINCAPS2(pContext, &caps, pDeviceInfo);
        }
    }

    return MA_NO_DEVICE;
}


static ma_result ma_device_uninit__winmm(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ((MA_PFN_waveInClose)pDevice->pContext->winmm.waveInClose)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture);
        CloseHandle((HANDLE)pDevice->winmm.hEventCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ((MA_PFN_waveOutReset)pDevice->pContext->winmm.waveOutReset)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback);
        ((MA_PFN_waveOutClose)pDevice->pContext->winmm.waveOutClose)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback);
        CloseHandle((HANDLE)pDevice->winmm.hEventPlayback);
    }

    ma_free(pDevice->winmm._pHeapData, &pDevice->pContext->allocationCallbacks);

    MA_ZERO_OBJECT(&pDevice->winmm);   /* Safety. */

    return MA_SUCCESS;
}

static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__winmm(const ma_device_descriptor* pDescriptor, ma_uint32 nativeSampleRate, ma_performance_profile performanceProfile)
{
    /* WinMM has a minimum period size of 40ms. */
    ma_uint32 minPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(40, nativeSampleRate);
    ma_uint32 periodSizeInFrames;

    periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, nativeSampleRate, performanceProfile);
    if (periodSizeInFrames < minPeriodSizeInFrames) {
        periodSizeInFrames = minPeriodSizeInFrames;
    }

    return periodSizeInFrames;
}

static ma_result ma_device_init__winmm(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    const char* errorMsg = "";
    ma_result errorCode = MA_ERROR;
    ma_result result = MA_SUCCESS;
    ma_uint32 heapSize;
    UINT winMMDeviceIDPlayback = 0;
    UINT winMMDeviceIDCapture  = 0;

    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->winmm);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /* No exclusive mode with WinMM. */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->shareMode == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->shareMode  == ma_share_mode_exclusive)) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    if (pDescriptorPlayback->pDeviceID != NULL) {
        winMMDeviceIDPlayback = (UINT)pDescriptorPlayback->pDeviceID->winmm;
    }
    if (pDescriptorCapture->pDeviceID != NULL) {
        winMMDeviceIDCapture = (UINT)pDescriptorCapture->pDeviceID->winmm;
    }

    /* The capture device needs to be initialized first. */
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        MA_WAVEINCAPSA caps;
        MA_WAVEFORMATEX wf;
        MA_MMRESULT resultMM;

        /* We use an event to know when a new fragment needs to be enqueued. */
        pDevice->winmm.hEventCapture = (ma_handle)CreateEventA(NULL, TRUE, TRUE, NULL);
        if (pDevice->winmm.hEventCapture == NULL) {
            errorMsg = "[WinMM] Failed to create event for fragment enqueuing for the capture device.", errorCode = ma_result_from_GetLastError(GetLastError());
            goto on_error;
        }

        /* The format should be based on the device's actual format. */
        if (((MA_PFN_waveInGetDevCapsA)pDevice->pContext->winmm.waveInGetDevCapsA)(winMMDeviceIDCapture, &caps, sizeof(caps)) != MA_MMSYSERR_NOERROR) {
            errorMsg = "[WinMM] Failed to retrieve internal device caps.", errorCode = MA_FORMAT_NOT_SUPPORTED;
            goto on_error;
        }

        result = ma_formats_flags_to_WAVEFORMATEX__winmm(caps.dwFormats, caps.wChannels, &wf);
        if (result != MA_SUCCESS) {
            errorMsg = "[WinMM] Could not find appropriate format for internal device.", errorCode = result;
            goto on_error;
        }

        resultMM = ((MA_PFN_waveInOpen)pDevice->pContext->winmm.waveInOpen)((MA_HWAVEIN*)&pDevice->winmm.hDeviceCapture, winMMDeviceIDCapture, &wf, (DWORD_PTR)pDevice->winmm.hEventCapture, (DWORD_PTR)pDevice, MA_CALLBACK_EVENT | MA_WAVE_ALLOWSYNC);
        if (resultMM != MA_MMSYSERR_NOERROR) {
            errorMsg = "[WinMM] Failed to open capture device.", errorCode = MA_FAILED_TO_OPEN_BACKEND_DEVICE;
            goto on_error;
        }

        pDescriptorCapture->format             = ma_format_from_WAVEFORMATEX(&wf);
        pDescriptorCapture->channels           = wf.nChannels;
        pDescriptorCapture->sampleRate         = wf.nSamplesPerSec;
        ma_channel_map_init_standard(ma_standard_channel_map_microsoft, pDescriptorCapture->channelMap, ma_countof(pDescriptorCapture->channelMap), pDescriptorCapture->channels);
        pDescriptorCapture->periodCount        = pDescriptorCapture->periodCount;
        pDescriptorCapture->periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__winmm(pDescriptorCapture, pDescriptorCapture->sampleRate, pConfig->performanceProfile);
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        MA_WAVEOUTCAPSA caps;
        MA_WAVEFORMATEX wf;
        MA_MMRESULT resultMM;

        /* We use an event to know when a new fragment needs to be enqueued. */
        pDevice->winmm.hEventPlayback = (ma_handle)CreateEventA(NULL, TRUE, TRUE, NULL);
        if (pDevice->winmm.hEventPlayback == NULL) {
            errorMsg = "[WinMM] Failed to create event for fragment enqueuing for the playback device.", errorCode = ma_result_from_GetLastError(GetLastError());
            goto on_error;
        }

        /* The format should be based on the device's actual format. */
        if (((MA_PFN_waveOutGetDevCapsA)pDevice->pContext->winmm.waveOutGetDevCapsA)(winMMDeviceIDPlayback, &caps, sizeof(caps)) != MA_MMSYSERR_NOERROR) {
            errorMsg = "[WinMM] Failed to retrieve internal device caps.", errorCode = MA_FORMAT_NOT_SUPPORTED;
            goto on_error;
        }

        result = ma_formats_flags_to_WAVEFORMATEX__winmm(caps.dwFormats, caps.wChannels, &wf);
        if (result != MA_SUCCESS) {
            errorMsg = "[WinMM] Could not find appropriate format for internal device.", errorCode = result;
            goto on_error;
        }

        resultMM = ((MA_PFN_waveOutOpen)pDevice->pContext->winmm.waveOutOpen)((MA_HWAVEOUT*)&pDevice->winmm.hDevicePlayback, winMMDeviceIDPlayback, &wf, (DWORD_PTR)pDevice->winmm.hEventPlayback, (DWORD_PTR)pDevice, MA_CALLBACK_EVENT | MA_WAVE_ALLOWSYNC);
        if (resultMM != MA_MMSYSERR_NOERROR) {
            errorMsg = "[WinMM] Failed to open playback device.", errorCode = MA_FAILED_TO_OPEN_BACKEND_DEVICE;
            goto on_error;
        }

        pDescriptorPlayback->format             = ma_format_from_WAVEFORMATEX(&wf);
        pDescriptorPlayback->channels           = wf.nChannels;
        pDescriptorPlayback->sampleRate         = wf.nSamplesPerSec;
        ma_channel_map_init_standard(ma_standard_channel_map_microsoft, pDescriptorPlayback->channelMap, ma_countof(pDescriptorPlayback->channelMap), pDescriptorPlayback->channels);
        pDescriptorPlayback->periodCount        = pDescriptorPlayback->periodCount;
        pDescriptorPlayback->periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__winmm(pDescriptorPlayback, pDescriptorPlayback->sampleRate, pConfig->performanceProfile);
    }

    /*
    The heap allocated data is allocated like so:

    [Capture WAVEHDRs][Playback WAVEHDRs][Capture Intermediary Buffer][Playback Intermediary Buffer]
    */
    heapSize = 0;
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        heapSize += sizeof(MA_WAVEHDR)*pDescriptorCapture->periodCount + (pDescriptorCapture->periodSizeInFrames * pDescriptorCapture->periodCount * ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels));
    }
    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        heapSize += sizeof(MA_WAVEHDR)*pDescriptorPlayback->periodCount + (pDescriptorPlayback->periodSizeInFrames * pDescriptorPlayback->periodCount * ma_get_bytes_per_frame(pDescriptorPlayback->format, pDescriptorPlayback->channels));
    }

    pDevice->winmm._pHeapData = (ma_uint8*)ma_calloc(heapSize, &pDevice->pContext->allocationCallbacks);
    if (pDevice->winmm._pHeapData == NULL) {
        errorMsg = "[WinMM] Failed to allocate memory for the intermediary buffer.", errorCode = MA_OUT_OF_MEMORY;
        goto on_error;
    }

    MA_ZERO_MEMORY(pDevice->winmm._pHeapData, heapSize);

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_uint32 iPeriod;

        if (pConfig->deviceType == ma_device_type_capture) {
            pDevice->winmm.pWAVEHDRCapture            = pDevice->winmm._pHeapData;
            pDevice->winmm.pIntermediaryBufferCapture = pDevice->winmm._pHeapData + (sizeof(MA_WAVEHDR)*(pDescriptorCapture->periodCount));
        } else {
            pDevice->winmm.pWAVEHDRCapture            = pDevice->winmm._pHeapData;
            pDevice->winmm.pIntermediaryBufferCapture = pDevice->winmm._pHeapData + (sizeof(MA_WAVEHDR)*(pDescriptorCapture->periodCount + pDescriptorPlayback->periodCount));
        }

        /* Prepare headers. */
        for (iPeriod = 0; iPeriod < pDescriptorCapture->periodCount; ++iPeriod) {
            ma_uint32 periodSizeInBytes = ma_get_period_size_in_bytes(pDescriptorCapture->periodSizeInFrames, pDescriptorCapture->format, pDescriptorCapture->channels);

            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod].lpData         = (char*)(pDevice->winmm.pIntermediaryBufferCapture + (periodSizeInBytes*iPeriod));
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod].dwBufferLength = periodSizeInBytes;
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod].dwFlags        = 0L;
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod].dwLoops        = 0L;
            ((MA_PFN_waveInPrepareHeader)pDevice->pContext->winmm.waveInPrepareHeader)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture, &((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod], sizeof(MA_WAVEHDR));

            /*
            The user data of the MA_WAVEHDR structure is a single flag the controls whether or not it is ready for writing. Consider it to be named "isLocked". A value of 0 means
            it's unlocked and available for writing. A value of 1 means it's locked.
            */
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod].dwUser = 0;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_uint32 iPeriod;

        if (pConfig->deviceType == ma_device_type_playback) {
            pDevice->winmm.pWAVEHDRPlayback            = pDevice->winmm._pHeapData;
            pDevice->winmm.pIntermediaryBufferPlayback = pDevice->winmm._pHeapData + (sizeof(MA_WAVEHDR)*pDescriptorPlayback->periodCount);
        } else {
            pDevice->winmm.pWAVEHDRPlayback            = pDevice->winmm._pHeapData + (sizeof(MA_WAVEHDR)*(pDescriptorCapture->periodCount));
            pDevice->winmm.pIntermediaryBufferPlayback = pDevice->winmm._pHeapData + (sizeof(MA_WAVEHDR)*(pDescriptorCapture->periodCount + pDescriptorPlayback->periodCount)) + (pDescriptorCapture->periodSizeInFrames*pDescriptorCapture->periodCount*ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels));
        }

        /* Prepare headers. */
        for (iPeriod = 0; iPeriod < pDescriptorPlayback->periodCount; ++iPeriod) {
            ma_uint32 periodSizeInBytes = ma_get_period_size_in_bytes(pDescriptorPlayback->periodSizeInFrames, pDescriptorPlayback->format, pDescriptorPlayback->channels);

            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod].lpData         = (char*)(pDevice->winmm.pIntermediaryBufferPlayback + (periodSizeInBytes*iPeriod));
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod].dwBufferLength = periodSizeInBytes;
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod].dwFlags        = 0L;
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod].dwLoops        = 0L;
            ((MA_PFN_waveOutPrepareHeader)pDevice->pContext->winmm.waveOutPrepareHeader)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback, &((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod], sizeof(MA_WAVEHDR));

            /*
            The user data of the MA_WAVEHDR structure is a single flag the controls whether or not it is ready for writing. Consider it to be named "isLocked". A value of 0 means
            it's unlocked and available for writing. A value of 1 means it's locked.
            */
            ((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod].dwUser = 0;
        }
    }

    return MA_SUCCESS;

on_error:
    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        if (pDevice->winmm.pWAVEHDRCapture != NULL) {
            ma_uint32 iPeriod;
            for (iPeriod = 0; iPeriod < pDescriptorCapture->periodCount; ++iPeriod) {
                ((MA_PFN_waveInUnprepareHeader)pDevice->pContext->winmm.waveInUnprepareHeader)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture, &((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod], sizeof(MA_WAVEHDR));
            }
        }

        ((MA_PFN_waveInClose)pDevice->pContext->winmm.waveInClose)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        if (pDevice->winmm.pWAVEHDRCapture != NULL) {
            ma_uint32 iPeriod;
            for (iPeriod = 0; iPeriod < pDescriptorPlayback->periodCount; ++iPeriod) {
                ((MA_PFN_waveOutUnprepareHeader)pDevice->pContext->winmm.waveOutUnprepareHeader)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback, &((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback)[iPeriod], sizeof(MA_WAVEHDR));
            }
        }

        ((MA_PFN_waveOutClose)pDevice->pContext->winmm.waveOutClose)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback);
    }

    ma_free(pDevice->winmm._pHeapData, &pDevice->pContext->allocationCallbacks);

    if (errorMsg != NULL && errorMsg[0] != '\0') {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "%s", errorMsg);
    }

    return errorCode;
}

static ma_result ma_device_start__winmm(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        MA_MMRESULT resultMM;
        MA_WAVEHDR* pWAVEHDR;
        ma_uint32 iPeriod;

        pWAVEHDR = (MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture;

        /* Make sure the event is reset to a non-signaled state to ensure we don't prematurely return from WaitForSingleObject(). */
        ResetEvent((HANDLE)pDevice->winmm.hEventCapture);

        /* To start the device we attach all of the buffers and then start it. As the buffers are filled with data we will get notifications. */
        for (iPeriod = 0; iPeriod < pDevice->capture.internalPeriods; ++iPeriod) {
            resultMM = ((MA_PFN_waveInAddBuffer)pDevice->pContext->winmm.waveInAddBuffer)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture, &((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[iPeriod], sizeof(MA_WAVEHDR));
            if (resultMM != MA_MMSYSERR_NOERROR) {
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WinMM] Failed to attach input buffers to capture device in preparation for capture.");
                return ma_result_from_MMRESULT(resultMM);
            }

            /* Make sure all of the buffers start out locked. We don't want to access them until the backend tells us we can. */
            pWAVEHDR[iPeriod].dwUser = 1;   /* 1 = locked. */
        }

        /* Capture devices need to be explicitly started, unlike playback devices. */
        resultMM = ((MA_PFN_waveInStart)pDevice->pContext->winmm.waveInStart)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture);
        if (resultMM != MA_MMSYSERR_NOERROR) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WinMM] Failed to start backend device.");
            return ma_result_from_MMRESULT(resultMM);
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        /* Don't need to do anything for playback. It'll be started automatically in ma_device_start__winmm(). */
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__winmm(ma_device* pDevice)
{
    MA_MMRESULT resultMM;

    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        if (pDevice->winmm.hDeviceCapture == NULL) {
            return MA_INVALID_ARGS;
        }

        resultMM = ((MA_PFN_waveInReset)pDevice->pContext->winmm.waveInReset)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture);
        if (resultMM != MA_MMSYSERR_NOERROR) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[WinMM] WARNING: Failed to reset capture device.");
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_uint32 iPeriod;
        MA_WAVEHDR* pWAVEHDR;

        if (pDevice->winmm.hDevicePlayback == NULL) {
            return MA_INVALID_ARGS;
        }

        /* We need to drain the device. To do this we just loop over each header and if it's locked just wait for the event. */
        pWAVEHDR = (MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback;
        for (iPeriod = 0; iPeriod < pDevice->playback.internalPeriods; iPeriod += 1) {
            if (pWAVEHDR[iPeriod].dwUser == 1) { /* 1 = locked. */
                if (WaitForSingleObject((HANDLE)pDevice->winmm.hEventPlayback, INFINITE) != WAIT_OBJECT_0) {
                    break;  /* An error occurred so just abandon ship and stop the device without draining. */
                }

                pWAVEHDR[iPeriod].dwUser = 0;
            }
        }

        resultMM = ((MA_PFN_waveOutReset)pDevice->pContext->winmm.waveOutReset)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback);
        if (resultMM != MA_MMSYSERR_NOERROR) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[WinMM] WARNING: Failed to reset playback device.");
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_write__winmm(ma_device* pDevice, const void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    ma_result result = MA_SUCCESS;
    MA_MMRESULT resultMM;
    ma_uint32 totalFramesWritten;
    MA_WAVEHDR* pWAVEHDR;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pPCMFrames != NULL);

    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    pWAVEHDR = (MA_WAVEHDR*)pDevice->winmm.pWAVEHDRPlayback;

    /* Keep processing as much data as possible. */
    totalFramesWritten = 0;
    while (totalFramesWritten < frameCount) {
        /* If the current header has some space available we need to write part of it. */
        if (pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwUser == 0) { /* 0 = unlocked. */
            /*
            This header has room in it. We copy as much of it as we can. If we end up fully consuming the buffer we need to
            write it out and move on to the next iteration.
            */
            ma_uint32 bpf = ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
            ma_uint32 framesRemainingInHeader = (pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwBufferLength/bpf) - pDevice->winmm.headerFramesConsumedPlayback;

            ma_uint32 framesToCopy = ma_min(framesRemainingInHeader, (frameCount - totalFramesWritten));
            const void* pSrc = ma_offset_ptr(pPCMFrames, totalFramesWritten*bpf);
            void* pDst = ma_offset_ptr(pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].lpData, pDevice->winmm.headerFramesConsumedPlayback*bpf);
            MA_COPY_MEMORY(pDst, pSrc, framesToCopy*bpf);

            pDevice->winmm.headerFramesConsumedPlayback += framesToCopy;
            totalFramesWritten += framesToCopy;

            /* If we've consumed the buffer entirely we need to write it out to the device. */
            if (pDevice->winmm.headerFramesConsumedPlayback == (pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwBufferLength/bpf)) {
                pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwUser = 1;            /* 1 = locked. */
                pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwFlags &= ~MA_WHDR_DONE; /* <-- Need to make sure the WHDR_DONE flag is unset. */

                /* Make sure the event is reset to a non-signaled state to ensure we don't prematurely return from WaitForSingleObject(). */
                ResetEvent((HANDLE)pDevice->winmm.hEventPlayback);

                /* The device will be started here. */
                resultMM = ((MA_PFN_waveOutWrite)pDevice->pContext->winmm.waveOutWrite)((MA_HWAVEOUT)pDevice->winmm.hDevicePlayback, &pWAVEHDR[pDevice->winmm.iNextHeaderPlayback], sizeof(MA_WAVEHDR));
                if (resultMM != MA_MMSYSERR_NOERROR) {
                    result = ma_result_from_MMRESULT(resultMM);
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WinMM] waveOutWrite() failed.");
                    break;
                }

                /* Make sure we move to the next header. */
                pDevice->winmm.iNextHeaderPlayback = (pDevice->winmm.iNextHeaderPlayback + 1) % pDevice->playback.internalPeriods;
                pDevice->winmm.headerFramesConsumedPlayback = 0;
            }

            /* If at this point we have consumed the entire input buffer we can return. */
            MA_ASSERT(totalFramesWritten <= frameCount);
            if (totalFramesWritten == frameCount) {
                break;
            }

            /* Getting here means there's more to process. */
            continue;
        }

        /* Getting here means there isn't enough room in the buffer and we need to wait for one to become available. */
        if (WaitForSingleObject((HANDLE)pDevice->winmm.hEventPlayback, INFINITE) != WAIT_OBJECT_0) {
            result = MA_ERROR;
            break;
        }

        /* Something happened. If the next buffer has been marked as done we need to reset a bit of state. */
        if ((pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwFlags & MA_WHDR_DONE) != 0) {
            pWAVEHDR[pDevice->winmm.iNextHeaderPlayback].dwUser = 0;    /* 0 = unlocked (make it available for writing). */
            pDevice->winmm.headerFramesConsumedPlayback = 0;
        }

        /* If the device has been stopped we need to break. */
        if (ma_device_get_state(pDevice) != ma_device_state_started) {
            break;
        }
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = totalFramesWritten;
    }

    return result;
}

static ma_result ma_device_read__winmm(ma_device* pDevice, void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    MA_MMRESULT resultMM;
    ma_uint32 totalFramesRead;
    MA_WAVEHDR* pWAVEHDR;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pPCMFrames != NULL);

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    pWAVEHDR = (MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture;

    /* Keep processing as much data as possible. */
    totalFramesRead = 0;
    while (totalFramesRead < frameCount) {
        /* If the current header has some space available we need to write part of it. */
        if (pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwUser == 0) { /* 0 = unlocked. */
            /* The buffer is available for reading. If we fully consume it we need to add it back to the buffer. */
            ma_uint32 bpf = ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
            ma_uint32 framesRemainingInHeader = (pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwBufferLength/bpf) - pDevice->winmm.headerFramesConsumedCapture;

            ma_uint32 framesToCopy = ma_min(framesRemainingInHeader, (frameCount - totalFramesRead));
            const void* pSrc = ma_offset_ptr(pWAVEHDR[pDevice->winmm.iNextHeaderCapture].lpData, pDevice->winmm.headerFramesConsumedCapture*bpf);
            void* pDst = ma_offset_ptr(pPCMFrames, totalFramesRead*bpf);
            MA_COPY_MEMORY(pDst, pSrc, framesToCopy*bpf);

            pDevice->winmm.headerFramesConsumedCapture += framesToCopy;
            totalFramesRead += framesToCopy;

            /* If we've consumed the buffer entirely we need to add it back to the device. */
            if (pDevice->winmm.headerFramesConsumedCapture == (pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwBufferLength/bpf)) {
                pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwUser = 1;            /* 1 = locked. */
                pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwFlags &= ~MA_WHDR_DONE; /* <-- Need to make sure the WHDR_DONE flag is unset. */

                /* Make sure the event is reset to a non-signaled state to ensure we don't prematurely return from WaitForSingleObject(). */
                ResetEvent((HANDLE)pDevice->winmm.hEventCapture);

                /* The device will be started here. */
                resultMM = ((MA_PFN_waveInAddBuffer)pDevice->pContext->winmm.waveInAddBuffer)((MA_HWAVEIN)pDevice->winmm.hDeviceCapture, &((MA_WAVEHDR*)pDevice->winmm.pWAVEHDRCapture)[pDevice->winmm.iNextHeaderCapture], sizeof(MA_WAVEHDR));
                if (resultMM != MA_MMSYSERR_NOERROR) {
                    result = ma_result_from_MMRESULT(resultMM);
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[WinMM] waveInAddBuffer() failed.");
                    break;
                }

                /* Make sure we move to the next header. */
                pDevice->winmm.iNextHeaderCapture = (pDevice->winmm.iNextHeaderCapture + 1) % pDevice->capture.internalPeriods;
                pDevice->winmm.headerFramesConsumedCapture = 0;
            }

            /* If at this point we have filled the entire input buffer we can return. */
            MA_ASSERT(totalFramesRead <= frameCount);
            if (totalFramesRead == frameCount) {
                break;
            }

            /* Getting here means there's more to process. */
            continue;
        }

        /* Getting here means there isn't enough any data left to send to the client which means we need to wait for more. */
        if (WaitForSingleObject((HANDLE)pDevice->winmm.hEventCapture, INFINITE) != WAIT_OBJECT_0) {
            result = MA_ERROR;
            break;
        }

        /* Something happened. If the next buffer has been marked as done we need to reset a bit of state. */
        if ((pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwFlags & MA_WHDR_DONE) != 0) {
            pWAVEHDR[pDevice->winmm.iNextHeaderCapture].dwUser = 0;    /* 0 = unlocked (make it available for reading). */
            pDevice->winmm.headerFramesConsumedCapture = 0;
        }

        /* If the device has been stopped we need to break. */
        if (ma_device_get_state(pDevice) != ma_device_state_started) {
            break;
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesRead;
    }

    return result;
}

static ma_result ma_context_uninit__winmm(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_winmm);

    ma_dlclose(ma_context_get_log(pContext), pContext->winmm.hWinMM);
    return MA_SUCCESS;
}

static ma_result ma_context_init__winmm(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    MA_ASSERT(pContext != NULL);

    (void)pConfig;

    pContext->winmm.hWinMM = ma_dlopen(ma_context_get_log(pContext), "winmm.dll");
    if (pContext->winmm.hWinMM == NULL) {
        return MA_NO_BACKEND;
    }

    pContext->winmm.waveOutGetNumDevs      = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutGetNumDevs");
    pContext->winmm.waveOutGetDevCapsA     = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutGetDevCapsA");
    pContext->winmm.waveOutOpen            = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutOpen");
    pContext->winmm.waveOutClose           = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutClose");
    pContext->winmm.waveOutPrepareHeader   = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutPrepareHeader");
    pContext->winmm.waveOutUnprepareHeader = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutUnprepareHeader");
    pContext->winmm.waveOutWrite           = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutWrite");
    pContext->winmm.waveOutReset           = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveOutReset");
    pContext->winmm.waveInGetNumDevs       = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInGetNumDevs");
    pContext->winmm.waveInGetDevCapsA      = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInGetDevCapsA");
    pContext->winmm.waveInOpen             = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInOpen");
    pContext->winmm.waveInClose            = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInClose");
    pContext->winmm.waveInPrepareHeader    = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInPrepareHeader");
    pContext->winmm.waveInUnprepareHeader  = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInUnprepareHeader");
    pContext->winmm.waveInAddBuffer        = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInAddBuffer");
    pContext->winmm.waveInStart            = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInStart");
    pContext->winmm.waveInReset            = ma_dlsym(ma_context_get_log(pContext), pContext->winmm.hWinMM, "waveInReset");

    pCallbacks->onContextInit             = ma_context_init__winmm;
    pCallbacks->onContextUninit           = ma_context_uninit__winmm;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__winmm;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__winmm;
    pCallbacks->onDeviceInit              = ma_device_init__winmm;
    pCallbacks->onDeviceUninit            = ma_device_uninit__winmm;
    pCallbacks->onDeviceStart             = ma_device_start__winmm;
    pCallbacks->onDeviceStop              = ma_device_stop__winmm;
    pCallbacks->onDeviceRead              = ma_device_read__winmm;
    pCallbacks->onDeviceWrite             = ma_device_write__winmm;
    pCallbacks->onDeviceDataLoop          = NULL;   /* This is a blocking read-write API, so this can be NULL since miniaudio will manage the audio thread for us. */

    return MA_SUCCESS;
}
#endif




/******************************************************************************

ALSA Backend

******************************************************************************/
#ifdef MA_HAS_ALSA

#include <poll.h>           /* poll(), struct pollfd */
#include <sys/eventfd.h>    /* eventfd() */

#ifdef MA_NO_RUNTIME_LINKING

/* asoundlib.h marks some functions with "inline" which isn't always supported. Need to emulate it. */
#if !defined(__cplusplus)
    #if defined(__STRICT_ANSI__)
        #if !defined(inline)
            #define inline __inline__ __attribute__((always_inline))
            #define MA_INLINE_DEFINED
        #endif
    #endif
#endif
#include <alsa/asoundlib.h>
#if defined(MA_INLINE_DEFINED)
    #undef inline
    #undef MA_INLINE_DEFINED
#endif

typedef snd_pcm_uframes_t                       ma_snd_pcm_uframes_t;
typedef snd_pcm_sframes_t                       ma_snd_pcm_sframes_t;
typedef snd_pcm_stream_t                        ma_snd_pcm_stream_t;
typedef snd_pcm_format_t                        ma_snd_pcm_format_t;
typedef snd_pcm_access_t                        ma_snd_pcm_access_t;
typedef snd_pcm_t                               ma_snd_pcm_t;
typedef snd_pcm_hw_params_t                     ma_snd_pcm_hw_params_t;
typedef snd_pcm_sw_params_t                     ma_snd_pcm_sw_params_t;
typedef snd_pcm_format_mask_t                   ma_snd_pcm_format_mask_t;
typedef snd_pcm_info_t                          ma_snd_pcm_info_t;
typedef snd_pcm_channel_area_t                  ma_snd_pcm_channel_area_t;
typedef snd_pcm_chmap_t                         ma_snd_pcm_chmap_t;
typedef snd_pcm_state_t                         ma_snd_pcm_state_t;

/* snd_pcm_stream_t */
#define MA_SND_PCM_STREAM_PLAYBACK              SND_PCM_STREAM_PLAYBACK
#define MA_SND_PCM_STREAM_CAPTURE               SND_PCM_STREAM_CAPTURE

/* snd_pcm_format_t */
#define MA_SND_PCM_FORMAT_UNKNOWN               SND_PCM_FORMAT_UNKNOWN
#define MA_SND_PCM_FORMAT_U8                    SND_PCM_FORMAT_U8
#define MA_SND_PCM_FORMAT_S16_LE                SND_PCM_FORMAT_S16_LE
#define MA_SND_PCM_FORMAT_S16_BE                SND_PCM_FORMAT_S16_BE
#define MA_SND_PCM_FORMAT_S24_LE                SND_PCM_FORMAT_S24_LE
#define MA_SND_PCM_FORMAT_S24_BE                SND_PCM_FORMAT_S24_BE
#define MA_SND_PCM_FORMAT_S32_LE                SND_PCM_FORMAT_S32_LE
#define MA_SND_PCM_FORMAT_S32_BE                SND_PCM_FORMAT_S32_BE
#define MA_SND_PCM_FORMAT_FLOAT_LE              SND_PCM_FORMAT_FLOAT_LE
#define MA_SND_PCM_FORMAT_FLOAT_BE              SND_PCM_FORMAT_FLOAT_BE
#define MA_SND_PCM_FORMAT_FLOAT64_LE            SND_PCM_FORMAT_FLOAT64_LE
#define MA_SND_PCM_FORMAT_FLOAT64_BE            SND_PCM_FORMAT_FLOAT64_BE
#define MA_SND_PCM_FORMAT_MU_LAW                SND_PCM_FORMAT_MU_LAW
#define MA_SND_PCM_FORMAT_A_LAW                 SND_PCM_FORMAT_A_LAW
#define MA_SND_PCM_FORMAT_S24_3LE               SND_PCM_FORMAT_S24_3LE
#define MA_SND_PCM_FORMAT_S24_3BE               SND_PCM_FORMAT_S24_3BE

/* ma_snd_pcm_access_t */
#define MA_SND_PCM_ACCESS_MMAP_INTERLEAVED      SND_PCM_ACCESS_MMAP_INTERLEAVED
#define MA_SND_PCM_ACCESS_MMAP_NONINTERLEAVED   SND_PCM_ACCESS_MMAP_NONINTERLEAVED
#define MA_SND_PCM_ACCESS_MMAP_COMPLEX          SND_PCM_ACCESS_MMAP_COMPLEX
#define MA_SND_PCM_ACCESS_RW_INTERLEAVED        SND_PCM_ACCESS_RW_INTERLEAVED
#define MA_SND_PCM_ACCESS_RW_NONINTERLEAVED     SND_PCM_ACCESS_RW_NONINTERLEAVED

/* Channel positions. */
#define MA_SND_CHMAP_UNKNOWN                    SND_CHMAP_UNKNOWN
#define MA_SND_CHMAP_NA                         SND_CHMAP_NA
#define MA_SND_CHMAP_MONO                       SND_CHMAP_MONO
#define MA_SND_CHMAP_FL                         SND_CHMAP_FL
#define MA_SND_CHMAP_FR                         SND_CHMAP_FR
#define MA_SND_CHMAP_RL                         SND_CHMAP_RL
#define MA_SND_CHMAP_RR                         SND_CHMAP_RR
#define MA_SND_CHMAP_FC                         SND_CHMAP_FC
#define MA_SND_CHMAP_LFE                        SND_CHMAP_LFE
#define MA_SND_CHMAP_SL                         SND_CHMAP_SL
#define MA_SND_CHMAP_SR                         SND_CHMAP_SR
#define MA_SND_CHMAP_RC                         SND_CHMAP_RC
#define MA_SND_CHMAP_FLC                        SND_CHMAP_FLC
#define MA_SND_CHMAP_FRC                        SND_CHMAP_FRC
#define MA_SND_CHMAP_RLC                        SND_CHMAP_RLC
#define MA_SND_CHMAP_RRC                        SND_CHMAP_RRC
#define MA_SND_CHMAP_FLW                        SND_CHMAP_FLW
#define MA_SND_CHMAP_FRW                        SND_CHMAP_FRW
#define MA_SND_CHMAP_FLH                        SND_CHMAP_FLH
#define MA_SND_CHMAP_FCH                        SND_CHMAP_FCH
#define MA_SND_CHMAP_FRH                        SND_CHMAP_FRH
#define MA_SND_CHMAP_TC                         SND_CHMAP_TC
#define MA_SND_CHMAP_TFL                        SND_CHMAP_TFL
#define MA_SND_CHMAP_TFR                        SND_CHMAP_TFR
#define MA_SND_CHMAP_TFC                        SND_CHMAP_TFC
#define MA_SND_CHMAP_TRL                        SND_CHMAP_TRL
#define MA_SND_CHMAP_TRR                        SND_CHMAP_TRR
#define MA_SND_CHMAP_TRC                        SND_CHMAP_TRC
#define MA_SND_CHMAP_TFLC                       SND_CHMAP_TFLC
#define MA_SND_CHMAP_TFRC                       SND_CHMAP_TFRC
#define MA_SND_CHMAP_TSL                        SND_CHMAP_TSL
#define MA_SND_CHMAP_TSR                        SND_CHMAP_TSR
#define MA_SND_CHMAP_LLFE                       SND_CHMAP_LLFE
#define MA_SND_CHMAP_RLFE                       SND_CHMAP_RLFE
#define MA_SND_CHMAP_BC                         SND_CHMAP_BC
#define MA_SND_CHMAP_BLC                        SND_CHMAP_BLC
#define MA_SND_CHMAP_BRC                        SND_CHMAP_BRC

/* Open mode flags. */
#define MA_SND_PCM_NO_AUTO_RESAMPLE             SND_PCM_NO_AUTO_RESAMPLE
#define MA_SND_PCM_NO_AUTO_CHANNELS             SND_PCM_NO_AUTO_CHANNELS
#define MA_SND_PCM_NO_AUTO_FORMAT               SND_PCM_NO_AUTO_FORMAT
#else
#include <errno.h>  /* For EPIPE, etc. */
typedef unsigned long                           ma_snd_pcm_uframes_t;
typedef long                                    ma_snd_pcm_sframes_t;
typedef int                                     ma_snd_pcm_stream_t;
typedef int                                     ma_snd_pcm_format_t;
typedef int                                     ma_snd_pcm_access_t;
typedef int                                     ma_snd_pcm_state_t;
typedef struct ma_snd_pcm_t                     ma_snd_pcm_t;
typedef struct ma_snd_pcm_hw_params_t           ma_snd_pcm_hw_params_t;
typedef struct ma_snd_pcm_sw_params_t           ma_snd_pcm_sw_params_t;
typedef struct ma_snd_pcm_format_mask_t         ma_snd_pcm_format_mask_t;
typedef struct ma_snd_pcm_info_t                ma_snd_pcm_info_t;
typedef struct
{
    void* addr;
    unsigned int first;
    unsigned int step;
} ma_snd_pcm_channel_area_t;
typedef struct
{
    unsigned int channels;
    unsigned int pos[1];
} ma_snd_pcm_chmap_t;

/* snd_pcm_state_t */
#define MA_SND_PCM_STATE_OPEN                  0
#define MA_SND_PCM_STATE_SETUP                 1
#define MA_SND_PCM_STATE_PREPARED              2
#define MA_SND_PCM_STATE_RUNNING               3
#define MA_SND_PCM_STATE_XRUN                  4
#define MA_SND_PCM_STATE_DRAINING              5
#define MA_SND_PCM_STATE_PAUSED                6
#define MA_SND_PCM_STATE_SUSPENDED             7
#define MA_SND_PCM_STATE_DISCONNECTED          8

/* snd_pcm_stream_t */
#define MA_SND_PCM_STREAM_PLAYBACK             0
#define MA_SND_PCM_STREAM_CAPTURE              1

/* snd_pcm_format_t */
#define MA_SND_PCM_FORMAT_UNKNOWN              -1
#define MA_SND_PCM_FORMAT_U8                   1
#define MA_SND_PCM_FORMAT_S16_LE               2
#define MA_SND_PCM_FORMAT_S16_BE               3
#define MA_SND_PCM_FORMAT_S24_LE               6
#define MA_SND_PCM_FORMAT_S24_BE               7
#define MA_SND_PCM_FORMAT_S32_LE               10
#define MA_SND_PCM_FORMAT_S32_BE               11
#define MA_SND_PCM_FORMAT_FLOAT_LE             14
#define MA_SND_PCM_FORMAT_FLOAT_BE             15
#define MA_SND_PCM_FORMAT_FLOAT64_LE           16
#define MA_SND_PCM_FORMAT_FLOAT64_BE           17
#define MA_SND_PCM_FORMAT_MU_LAW               20
#define MA_SND_PCM_FORMAT_A_LAW                21
#define MA_SND_PCM_FORMAT_S24_3LE              32
#define MA_SND_PCM_FORMAT_S24_3BE              33

/* snd_pcm_access_t */
#define MA_SND_PCM_ACCESS_MMAP_INTERLEAVED     0
#define MA_SND_PCM_ACCESS_MMAP_NONINTERLEAVED  1
#define MA_SND_PCM_ACCESS_MMAP_COMPLEX         2
#define MA_SND_PCM_ACCESS_RW_INTERLEAVED       3
#define MA_SND_PCM_ACCESS_RW_NONINTERLEAVED    4

/* Channel positions. */
#define MA_SND_CHMAP_UNKNOWN                   0
#define MA_SND_CHMAP_NA                        1
#define MA_SND_CHMAP_MONO                      2
#define MA_SND_CHMAP_FL                        3
#define MA_SND_CHMAP_FR                        4
#define MA_SND_CHMAP_RL                        5
#define MA_SND_CHMAP_RR                        6
#define MA_SND_CHMAP_FC                        7
#define MA_SND_CHMAP_LFE                       8
#define MA_SND_CHMAP_SL                        9
#define MA_SND_CHMAP_SR                        10
#define MA_SND_CHMAP_RC                        11
#define MA_SND_CHMAP_FLC                       12
#define MA_SND_CHMAP_FRC                       13
#define MA_SND_CHMAP_RLC                       14
#define MA_SND_CHMAP_RRC                       15
#define MA_SND_CHMAP_FLW                       16
#define MA_SND_CHMAP_FRW                       17
#define MA_SND_CHMAP_FLH                       18
#define MA_SND_CHMAP_FCH                       19
#define MA_SND_CHMAP_FRH                       20
#define MA_SND_CHMAP_TC                        21
#define MA_SND_CHMAP_TFL                       22
#define MA_SND_CHMAP_TFR                       23
#define MA_SND_CHMAP_TFC                       24
#define MA_SND_CHMAP_TRL                       25
#define MA_SND_CHMAP_TRR                       26
#define MA_SND_CHMAP_TRC                       27
#define MA_SND_CHMAP_TFLC                      28
#define MA_SND_CHMAP_TFRC                      29
#define MA_SND_CHMAP_TSL                       30
#define MA_SND_CHMAP_TSR                       31
#define MA_SND_CHMAP_LLFE                      32
#define MA_SND_CHMAP_RLFE                      33
#define MA_SND_CHMAP_BC                        34
#define MA_SND_CHMAP_BLC                       35
#define MA_SND_CHMAP_BRC                       36

/* Open mode flags. */
#define MA_SND_PCM_NO_AUTO_RESAMPLE            0x00010000
#define MA_SND_PCM_NO_AUTO_CHANNELS            0x00020000
#define MA_SND_PCM_NO_AUTO_FORMAT              0x00040000
#endif

typedef int                  (* ma_snd_pcm_open_proc)                          (ma_snd_pcm_t **pcm, const char *name, ma_snd_pcm_stream_t stream, int mode);
typedef int                  (* ma_snd_pcm_close_proc)                         (ma_snd_pcm_t *pcm);
typedef size_t               (* ma_snd_pcm_hw_params_sizeof_proc)              (void);
typedef int                  (* ma_snd_pcm_hw_params_any_proc)                 (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params);
typedef int                  (* ma_snd_pcm_hw_params_set_format_proc)          (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, ma_snd_pcm_format_t val);
typedef int                  (* ma_snd_pcm_hw_params_set_format_first_proc)    (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, ma_snd_pcm_format_t *format);
typedef void                 (* ma_snd_pcm_hw_params_get_format_mask_proc)     (ma_snd_pcm_hw_params_t *params, ma_snd_pcm_format_mask_t *mask);
typedef int                  (* ma_snd_pcm_hw_params_set_channels_proc)        (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int val);
typedef int                  (* ma_snd_pcm_hw_params_set_channels_near_proc)   (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int *val);
typedef int                  (* ma_snd_pcm_hw_params_set_channels_minmax_proc) (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int *minimum, unsigned int *maximum);
typedef int                  (* ma_snd_pcm_hw_params_set_rate_resample_proc)   (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int val);
typedef int                  (* ma_snd_pcm_hw_params_set_rate_proc)            (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int val, int dir);
typedef int                  (* ma_snd_pcm_hw_params_set_rate_near_proc)       (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
typedef int                  (* ma_snd_pcm_hw_params_set_buffer_size_near_proc)(ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, ma_snd_pcm_uframes_t *val);
typedef int                  (* ma_snd_pcm_hw_params_set_periods_near_proc)    (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
typedef int                  (* ma_snd_pcm_hw_params_set_access_proc)          (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, ma_snd_pcm_access_t _access);
typedef int                  (* ma_snd_pcm_hw_params_get_format_proc)          (const ma_snd_pcm_hw_params_t *params, ma_snd_pcm_format_t *format);
typedef int                  (* ma_snd_pcm_hw_params_get_channels_proc)        (const ma_snd_pcm_hw_params_t *params, unsigned int *val);
typedef int                  (* ma_snd_pcm_hw_params_get_channels_min_proc)    (const ma_snd_pcm_hw_params_t *params, unsigned int *val);
typedef int                  (* ma_snd_pcm_hw_params_get_channels_max_proc)    (const ma_snd_pcm_hw_params_t *params, unsigned int *val);
typedef int                  (* ma_snd_pcm_hw_params_get_rate_proc)            (const ma_snd_pcm_hw_params_t *params, unsigned int *rate, int *dir);
typedef int                  (* ma_snd_pcm_hw_params_get_rate_min_proc)        (const ma_snd_pcm_hw_params_t *params, unsigned int *rate, int *dir);
typedef int                  (* ma_snd_pcm_hw_params_get_rate_max_proc)        (const ma_snd_pcm_hw_params_t *params, unsigned int *rate, int *dir);
typedef int                  (* ma_snd_pcm_hw_params_get_buffer_size_proc)     (const ma_snd_pcm_hw_params_t *params, ma_snd_pcm_uframes_t *val);
typedef int                  (* ma_snd_pcm_hw_params_get_periods_proc)         (const ma_snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
typedef int                  (* ma_snd_pcm_hw_params_get_access_proc)          (const ma_snd_pcm_hw_params_t *params, ma_snd_pcm_access_t *_access);
typedef int                  (* ma_snd_pcm_hw_params_test_format_proc)         (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, ma_snd_pcm_format_t val);
typedef int                  (* ma_snd_pcm_hw_params_test_channels_proc)       (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int val);
typedef int                  (* ma_snd_pcm_hw_params_test_rate_proc)           (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params, unsigned int val, int dir);
typedef int                  (* ma_snd_pcm_hw_params_proc)                     (ma_snd_pcm_t *pcm, ma_snd_pcm_hw_params_t *params);
typedef size_t               (* ma_snd_pcm_sw_params_sizeof_proc)              (void);
typedef int                  (* ma_snd_pcm_sw_params_current_proc)             (ma_snd_pcm_t *pcm, ma_snd_pcm_sw_params_t *params);
typedef int                  (* ma_snd_pcm_sw_params_get_boundary_proc)        (const ma_snd_pcm_sw_params_t *params, ma_snd_pcm_uframes_t* val);
typedef int                  (* ma_snd_pcm_sw_params_set_avail_min_proc)       (ma_snd_pcm_t *pcm, ma_snd_pcm_sw_params_t *params, ma_snd_pcm_uframes_t val);
typedef int                  (* ma_snd_pcm_sw_params_set_start_threshold_proc) (ma_snd_pcm_t *pcm, ma_snd_pcm_sw_params_t *params, ma_snd_pcm_uframes_t val);
typedef int                  (* ma_snd_pcm_sw_params_set_stop_threshold_proc)  (ma_snd_pcm_t *pcm, ma_snd_pcm_sw_params_t *params, ma_snd_pcm_uframes_t val);
typedef int                  (* ma_snd_pcm_sw_params_proc)                     (ma_snd_pcm_t *pcm, ma_snd_pcm_sw_params_t *params);
typedef size_t               (* ma_snd_pcm_format_mask_sizeof_proc)            (void);
typedef int                  (* ma_snd_pcm_format_mask_test_proc)              (const ma_snd_pcm_format_mask_t *mask, ma_snd_pcm_format_t val);
typedef ma_snd_pcm_chmap_t * (* ma_snd_pcm_get_chmap_proc)                     (ma_snd_pcm_t *pcm);
typedef ma_snd_pcm_state_t   (* ma_snd_pcm_state_proc)                         (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_prepare_proc)                       (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_start_proc)                         (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_drop_proc)                          (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_drain_proc)                         (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_reset_proc)                         (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_device_name_hint_proc)                  (int card, const char *iface, void ***hints);
typedef char *               (* ma_snd_device_name_get_hint_proc)              (const void *hint, const char *id);
typedef int                  (* ma_snd_card_get_index_proc)                    (const char *name);
typedef int                  (* ma_snd_device_name_free_hint_proc)             (void **hints);
typedef int                  (* ma_snd_pcm_mmap_begin_proc)                    (ma_snd_pcm_t *pcm, const ma_snd_pcm_channel_area_t **areas, ma_snd_pcm_uframes_t *offset, ma_snd_pcm_uframes_t *frames);
typedef ma_snd_pcm_sframes_t (* ma_snd_pcm_mmap_commit_proc)                   (ma_snd_pcm_t *pcm, ma_snd_pcm_uframes_t offset, ma_snd_pcm_uframes_t frames);
typedef int                  (* ma_snd_pcm_recover_proc)                       (ma_snd_pcm_t *pcm, int err, int silent);
typedef ma_snd_pcm_sframes_t (* ma_snd_pcm_readi_proc)                         (ma_snd_pcm_t *pcm, void *buffer, ma_snd_pcm_uframes_t size);
typedef ma_snd_pcm_sframes_t (* ma_snd_pcm_writei_proc)                        (ma_snd_pcm_t *pcm, const void *buffer, ma_snd_pcm_uframes_t size);
typedef ma_snd_pcm_sframes_t (* ma_snd_pcm_avail_proc)                         (ma_snd_pcm_t *pcm);
typedef ma_snd_pcm_sframes_t (* ma_snd_pcm_avail_update_proc)                  (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_wait_proc)                          (ma_snd_pcm_t *pcm, int timeout);
typedef int                  (* ma_snd_pcm_nonblock_proc)                      (ma_snd_pcm_t *pcm, int nonblock);
typedef int                  (* ma_snd_pcm_info_proc)                          (ma_snd_pcm_t *pcm, ma_snd_pcm_info_t* info);
typedef size_t               (* ma_snd_pcm_info_sizeof_proc)                   (void);
typedef const char*          (* ma_snd_pcm_info_get_name_proc)                 (const ma_snd_pcm_info_t* info);
typedef int                  (* ma_snd_pcm_poll_descriptors_proc)              (ma_snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space);
typedef int                  (* ma_snd_pcm_poll_descriptors_count_proc)        (ma_snd_pcm_t *pcm);
typedef int                  (* ma_snd_pcm_poll_descriptors_revents_proc)      (ma_snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
typedef int                  (* ma_snd_config_update_free_global_proc)         (void);

/* This array specifies each of the common devices that can be used for both playback and capture. */
static const char* g_maCommonDeviceNamesALSA[] = {
    "default",
    "null",
    "pulse",
    "jack"
};

/* This array allows us to blacklist specific playback devices. */
static const char* g_maBlacklistedPlaybackDeviceNamesALSA[] = {
    ""
};

/* This array allows us to blacklist specific capture devices. */
static const char* g_maBlacklistedCaptureDeviceNamesALSA[] = {
    ""
};


static ma_snd_pcm_format_t ma_convert_ma_format_to_alsa_format(ma_format format)
{
    ma_snd_pcm_format_t ALSAFormats[] = {
        MA_SND_PCM_FORMAT_UNKNOWN,     /* ma_format_unknown */
        MA_SND_PCM_FORMAT_U8,          /* ma_format_u8 */
        MA_SND_PCM_FORMAT_S16_LE,      /* ma_format_s16 */
        MA_SND_PCM_FORMAT_S24_3LE,     /* ma_format_s24 */
        MA_SND_PCM_FORMAT_S32_LE,      /* ma_format_s32 */
        MA_SND_PCM_FORMAT_FLOAT_LE     /* ma_format_f32 */
    };

    if (ma_is_big_endian()) {
        ALSAFormats[0] = MA_SND_PCM_FORMAT_UNKNOWN;
        ALSAFormats[1] = MA_SND_PCM_FORMAT_U8;
        ALSAFormats[2] = MA_SND_PCM_FORMAT_S16_BE;
        ALSAFormats[3] = MA_SND_PCM_FORMAT_S24_3BE;
        ALSAFormats[4] = MA_SND_PCM_FORMAT_S32_BE;
        ALSAFormats[5] = MA_SND_PCM_FORMAT_FLOAT_BE;
    }

    return ALSAFormats[format];
}

static ma_format ma_format_from_alsa(ma_snd_pcm_format_t formatALSA)
{
    if (ma_is_little_endian()) {
        switch (formatALSA) {
            case MA_SND_PCM_FORMAT_S16_LE:   return ma_format_s16;
            case MA_SND_PCM_FORMAT_S24_3LE:  return ma_format_s24;
            case MA_SND_PCM_FORMAT_S32_LE:   return ma_format_s32;
            case MA_SND_PCM_FORMAT_FLOAT_LE: return ma_format_f32;
            default: break;
        }
    } else {
        switch (formatALSA) {
            case MA_SND_PCM_FORMAT_S16_BE:   return ma_format_s16;
            case MA_SND_PCM_FORMAT_S24_3BE:  return ma_format_s24;
            case MA_SND_PCM_FORMAT_S32_BE:   return ma_format_s32;
            case MA_SND_PCM_FORMAT_FLOAT_BE: return ma_format_f32;
            default: break;
        }
    }

    /* Endian agnostic. */
    switch (formatALSA) {
        case MA_SND_PCM_FORMAT_U8: return ma_format_u8;
        default: return ma_format_unknown;
    }
}

static ma_channel ma_convert_alsa_channel_position_to_ma_channel(unsigned int alsaChannelPos)
{
    switch (alsaChannelPos)
    {
        case MA_SND_CHMAP_MONO: return MA_CHANNEL_MONO;
        case MA_SND_CHMAP_FL:   return MA_CHANNEL_FRONT_LEFT;
        case MA_SND_CHMAP_FR:   return MA_CHANNEL_FRONT_RIGHT;
        case MA_SND_CHMAP_RL:   return MA_CHANNEL_BACK_LEFT;
        case MA_SND_CHMAP_RR:   return MA_CHANNEL_BACK_RIGHT;
        case MA_SND_CHMAP_FC:   return MA_CHANNEL_FRONT_CENTER;
        case MA_SND_CHMAP_LFE:  return MA_CHANNEL_LFE;
        case MA_SND_CHMAP_SL:   return MA_CHANNEL_SIDE_LEFT;
        case MA_SND_CHMAP_SR:   return MA_CHANNEL_SIDE_RIGHT;
        case MA_SND_CHMAP_RC:   return MA_CHANNEL_BACK_CENTER;
        case MA_SND_CHMAP_FLC:  return MA_CHANNEL_FRONT_LEFT_CENTER;
        case MA_SND_CHMAP_FRC:  return MA_CHANNEL_FRONT_RIGHT_CENTER;
        case MA_SND_CHMAP_RLC:  return 0;
        case MA_SND_CHMAP_RRC:  return 0;
        case MA_SND_CHMAP_FLW:  return 0;
        case MA_SND_CHMAP_FRW:  return 0;
        case MA_SND_CHMAP_FLH:  return 0;
        case MA_SND_CHMAP_FCH:  return 0;
        case MA_SND_CHMAP_FRH:  return 0;
        case MA_SND_CHMAP_TC:   return MA_CHANNEL_TOP_CENTER;
        case MA_SND_CHMAP_TFL:  return MA_CHANNEL_TOP_FRONT_LEFT;
        case MA_SND_CHMAP_TFR:  return MA_CHANNEL_TOP_FRONT_RIGHT;
        case MA_SND_CHMAP_TFC:  return MA_CHANNEL_TOP_FRONT_CENTER;
        case MA_SND_CHMAP_TRL:  return MA_CHANNEL_TOP_BACK_LEFT;
        case MA_SND_CHMAP_TRR:  return MA_CHANNEL_TOP_BACK_RIGHT;
        case MA_SND_CHMAP_TRC:  return MA_CHANNEL_TOP_BACK_CENTER;
        default: break;
    }

    return 0;
}

static ma_bool32 ma_is_common_device_name__alsa(const char* name)
{
    size_t iName;
    for (iName = 0; iName < ma_countof(g_maCommonDeviceNamesALSA); ++iName) {
        if (ma_strcmp(name, g_maCommonDeviceNamesALSA[iName]) == 0) {
            return MA_TRUE;
        }
    }

    return MA_FALSE;
}


static ma_bool32 ma_is_playback_device_blacklisted__alsa(const char* name)
{
    size_t iName;
    for (iName = 0; iName < ma_countof(g_maBlacklistedPlaybackDeviceNamesALSA); ++iName) {
        if (ma_strcmp(name, g_maBlacklistedPlaybackDeviceNamesALSA[iName]) == 0) {
            return MA_TRUE;
        }
    }

    return MA_FALSE;
}

static ma_bool32 ma_is_capture_device_blacklisted__alsa(const char* name)
{
    size_t iName;
    for (iName = 0; iName < ma_countof(g_maBlacklistedCaptureDeviceNamesALSA); ++iName) {
        if (ma_strcmp(name, g_maBlacklistedCaptureDeviceNamesALSA[iName]) == 0) {
            return MA_TRUE;
        }
    }

    return MA_FALSE;
}

static ma_bool32 ma_is_device_blacklisted__alsa(ma_device_type deviceType, const char* name)
{
    if (deviceType == ma_device_type_playback) {
        return ma_is_playback_device_blacklisted__alsa(name);
    } else {
        return ma_is_capture_device_blacklisted__alsa(name);
    }
}


static const char* ma_find_char(const char* str, char c, int* index)
{
    int i = 0;
    for (;;) {
        if (str[i] == '\0') {
            if (index) *index = -1;
            return NULL;
        }

        if (str[i] == c) {
            if (index) *index = i;
            return str + i;
        }

        i += 1;
    }

    /* Should never get here, but treat it as though the character was not found to make me feel better inside. */
    if (index) *index = -1;
    return NULL;
}

static ma_bool32 ma_is_device_name_in_hw_format__alsa(const char* hwid)
{
    /* This function is just checking whether or not hwid is in "hw:%d,%d" format. */

    int commaPos;
    const char* dev;
    int i;

    if (hwid == NULL) {
        return MA_FALSE;
    }

    if (hwid[0] != 'h' || hwid[1] != 'w' || hwid[2] != ':') {
        return MA_FALSE;
    }

    hwid += 3;

    dev = ma_find_char(hwid, ',', &commaPos);
    if (dev == NULL) {
        return MA_FALSE;
    } else {
        dev += 1;   /* Skip past the ",". */
    }

    /* Check if the part between the ":" and the "," contains only numbers. If not, return false. */
    for (i = 0; i < commaPos; ++i) {
        if (hwid[i] < '0' || hwid[i] > '9') {
            return MA_FALSE;
        }
    }

    /* Check if everything after the "," is numeric. If not, return false. */
    i = 0;
    while (dev[i] != '\0') {
        if (dev[i] < '0' || dev[i] > '9') {
            return MA_FALSE;
        }
        i += 1;
    }

    return MA_TRUE;
}

static int ma_convert_device_name_to_hw_format__alsa(ma_context* pContext, char* dst, size_t dstSize, const char* src)  /* Returns 0 on success, non-0 on error. */
{
    /* src should look something like this: "hw:CARD=I82801AAICH,DEV=0" */

    int colonPos;
    int commaPos;
    char card[256];
    const char* dev;
    int cardIndex;

    if (dst == NULL) {
        return -1;
    }
    if (dstSize < 7) {
        return -1;     /* Absolute minimum size of the output buffer is 7 bytes. */
    }

    *dst = '\0';    /* Safety. */
    if (src == NULL) {
        return -1;
    }

    /* If the input name is already in "hw:%d,%d" format, just return that verbatim. */
    if (ma_is_device_name_in_hw_format__alsa(src)) {
        return ma_strcpy_s(dst, dstSize, src);
    }

    src = ma_find_char(src, ':', &colonPos);
    if (src == NULL) {
        return -1;  /* Couldn't find a colon */
    }

    dev = ma_find_char(src, ',', &commaPos);
    if (dev == NULL) {
        dev = "0";
        ma_strncpy_s(card, sizeof(card), src+6, (size_t)-1);   /* +6 = ":CARD=" */
    } else {
        dev = dev + 5;  /* +5 = ",DEV=" */
        ma_strncpy_s(card, sizeof(card), src+6, commaPos-6);   /* +6 = ":CARD=" */
    }

    cardIndex = ((ma_snd_card_get_index_proc)pContext->alsa.snd_card_get_index)(card);
    if (cardIndex < 0) {
        return -2;  /* Failed to retrieve the card index. */
    }


    /* Construction. */
    dst[0] = 'h'; dst[1] = 'w'; dst[2] = ':';
    if (ma_itoa_s(cardIndex, dst+3, dstSize-3, 10) != 0) {
        return -3;
    }
    if (ma_strcat_s(dst, dstSize, ",") != 0) {
        return -3;
    }
    if (ma_strcat_s(dst, dstSize, dev) != 0) {
        return -3;
    }

    return 0;
}

static ma_bool32 ma_does_id_exist_in_list__alsa(ma_device_id* pUniqueIDs, ma_uint32 count, const char* pHWID)
{
    ma_uint32 i;

    MA_ASSERT(pHWID != NULL);

    for (i = 0; i < count; ++i) {
        if (ma_strcmp(pUniqueIDs[i].alsa, pHWID) == 0) {
            return MA_TRUE;
        }
    }

    return MA_FALSE;
}


static ma_result ma_context_open_pcm__alsa(ma_context* pContext, ma_share_mode shareMode, ma_device_type deviceType, const ma_device_id* pDeviceID, int openMode, ma_snd_pcm_t** ppPCM)
{
    ma_snd_pcm_t* pPCM;
    ma_snd_pcm_stream_t stream;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppPCM != NULL);

    *ppPCM = NULL;
    pPCM = NULL;

    stream = (deviceType == ma_device_type_playback) ? MA_SND_PCM_STREAM_PLAYBACK : MA_SND_PCM_STREAM_CAPTURE;

    if (pDeviceID == NULL) {
        ma_bool32 isDeviceOpen;
        size_t i;

        /*
        We're opening the default device. I don't know if trying anything other than "default" is necessary, but it makes
        me feel better to try as hard as we can get to get _something_ working.
        */
        const char* defaultDeviceNames[] = {
            "default",
            NULL,
            NULL,
            NULL,
            NULL,
            NULL,
            NULL
        };

        if (shareMode == ma_share_mode_exclusive) {
            defaultDeviceNames[1] = "hw";
            defaultDeviceNames[2] = "hw:0";
            defaultDeviceNames[3] = "hw:0,0";
        } else {
            if (deviceType == ma_device_type_playback) {
                defaultDeviceNames[1] = "dmix";
                defaultDeviceNames[2] = "dmix:0";
                defaultDeviceNames[3] = "dmix:0,0";
            } else {
                defaultDeviceNames[1] = "dsnoop";
                defaultDeviceNames[2] = "dsnoop:0";
                defaultDeviceNames[3] = "dsnoop:0,0";
            }
            defaultDeviceNames[4] = "hw";
            defaultDeviceNames[5] = "hw:0";
            defaultDeviceNames[6] = "hw:0,0";
        }

        isDeviceOpen = MA_FALSE;
        for (i = 0; i < ma_countof(defaultDeviceNames); ++i) {
            if (defaultDeviceNames[i] != NULL && defaultDeviceNames[i][0] != '\0') {
                if (((ma_snd_pcm_open_proc)pContext->alsa.snd_pcm_open)(&pPCM, defaultDeviceNames[i], stream, openMode) == 0) {
                    isDeviceOpen = MA_TRUE;
                    break;
                }
            }
        }

        if (!isDeviceOpen) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[ALSA] snd_pcm_open() failed when trying to open an appropriate default device.");
            return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
        }
    } else {
        /*
        We're trying to open a specific device. There's a few things to consider here:

        miniaudio recognizes a special format of device id that excludes the "hw", "dmix", etc. prefix. It looks like this: ":0,0", ":0,1", etc. When
        an ID of this format is specified, it indicates to miniaudio that it can try different combinations of plugins ("hw", "dmix", etc.) until it
        finds an appropriate one that works. This comes in very handy when trying to open a device in shared mode ("dmix"), vs exclusive mode ("hw").
        */

        /* May end up needing to make small adjustments to the ID, so make a copy. */
        ma_device_id deviceID = *pDeviceID;
        int resultALSA = -ENODEV;

        if (deviceID.alsa[0] != ':') {
            /* The ID is not in ":0,0" format. Use the ID exactly as-is. */
            resultALSA = ((ma_snd_pcm_open_proc)pContext->alsa.snd_pcm_open)(&pPCM, deviceID.alsa, stream, openMode);
        } else {
            char hwid[256];

            /* The ID is in ":0,0" format. Try different plugins depending on the shared mode. */
            if (deviceID.alsa[1] == '\0') {
                deviceID.alsa[0] = '\0';  /* An ID of ":" should be converted to "". */
            }

            if (shareMode == ma_share_mode_shared) {
                if (deviceType == ma_device_type_playback) {
                    ma_strcpy_s(hwid, sizeof(hwid), "dmix");
                } else {
                    ma_strcpy_s(hwid, sizeof(hwid), "dsnoop");
                }

                if (ma_strcat_s(hwid, sizeof(hwid), deviceID.alsa) == 0) {
                    resultALSA = ((ma_snd_pcm_open_proc)pContext->alsa.snd_pcm_open)(&pPCM, hwid, stream, openMode);
                }
            }

            /* If at this point we still don't have an open device it means we're either preferencing exclusive mode or opening with "dmix"/"dsnoop" failed. */
            if (resultALSA != 0) {
                ma_strcpy_s(hwid, sizeof(hwid), "hw");
                if (ma_strcat_s(hwid, sizeof(hwid), deviceID.alsa) == 0) {
                    resultALSA = ((ma_snd_pcm_open_proc)pContext->alsa.snd_pcm_open)(&pPCM, hwid, stream, openMode);
                }
            }
        }

        if (resultALSA < 0) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[ALSA] snd_pcm_open() failed.");
            return ma_result_from_errno(-resultALSA);
        }
    }

    *ppPCM = pPCM;
    return MA_SUCCESS;
}


static ma_result ma_context_enumerate_devices__alsa(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    int resultALSA;
    ma_bool32 cbResult = MA_TRUE;
    char** ppDeviceHints;
    ma_device_id* pUniqueIDs = NULL;
    ma_uint32 uniqueIDCount = 0;
    char** ppNextDeviceHint;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    ma_mutex_lock(&pContext->alsa.internalDeviceEnumLock);

    resultALSA = ((ma_snd_device_name_hint_proc)pContext->alsa.snd_device_name_hint)(-1, "pcm", (void***)&ppDeviceHints);
    if (resultALSA < 0) {
        ma_mutex_unlock(&pContext->alsa.internalDeviceEnumLock);
        return ma_result_from_errno(-resultALSA);
    }

    ppNextDeviceHint = ppDeviceHints;
    while (*ppNextDeviceHint != NULL) {
        char* NAME = ((ma_snd_device_name_get_hint_proc)pContext->alsa.snd_device_name_get_hint)(*ppNextDeviceHint, "NAME");
        char* DESC = ((ma_snd_device_name_get_hint_proc)pContext->alsa.snd_device_name_get_hint)(*ppNextDeviceHint, "DESC");
        char* IOID = ((ma_snd_device_name_get_hint_proc)pContext->alsa.snd_device_name_get_hint)(*ppNextDeviceHint, "IOID");
        ma_device_type deviceType = ma_device_type_playback;
        ma_bool32 stopEnumeration = MA_FALSE;
        char hwid[sizeof(pUniqueIDs->alsa)];
        ma_device_info deviceInfo;

        if ((IOID == NULL || ma_strcmp(IOID, "Output") == 0)) {
            deviceType = ma_device_type_playback;
        }
        if ((IOID != NULL && ma_strcmp(IOID, "Input" ) == 0)) {
            deviceType = ma_device_type_capture;
        }

        if (NAME != NULL) {
            if (pContext->alsa.useVerboseDeviceEnumeration) {
                /* Verbose mode. Use the name exactly as-is. */
                ma_strncpy_s(hwid, sizeof(hwid), NAME, (size_t)-1);
            } else {
                /* Simplified mode. Use ":%d,%d" format. */
                if (ma_convert_device_name_to_hw_format__alsa(pContext, hwid, sizeof(hwid), NAME) == 0) {
                    /*
                    At this point, hwid looks like "hw:0,0". In simplified enumeration mode, we actually want to strip off the
                    plugin name so it looks like ":0,0". The reason for this is that this special format is detected at device
                    initialization time and is used as an indicator to try to use the most appropriate plugin depending on the
                    device type and sharing mode.
                    */
                    char* dst = hwid;
                    char* src = hwid+2;
                    while ((*dst++ = *src++));
                } else {
                    /* Conversion to "hw:%d,%d" failed. Just use the name as-is. */
                    ma_strncpy_s(hwid, sizeof(hwid), NAME, (size_t)-1);
                }

                if (ma_does_id_exist_in_list__alsa(pUniqueIDs, uniqueIDCount, hwid)) {
                    goto next_device;   /* The device has already been enumerated. Move on to the next one. */
                } else {
                    /* The device has not yet been enumerated. Make sure it's added to our list so that it's not enumerated again. */
                    size_t newCapacity = sizeof(*pUniqueIDs) * (uniqueIDCount + 1);
                    ma_device_id* pNewUniqueIDs = (ma_device_id*)ma_realloc(pUniqueIDs, newCapacity, &pContext->allocationCallbacks);
                    if (pNewUniqueIDs == NULL) {
                        goto next_device;   /* Failed to allocate memory. */
                    }

                    pUniqueIDs = pNewUniqueIDs;
                    MA_COPY_MEMORY(pUniqueIDs[uniqueIDCount].alsa, hwid, sizeof(hwid));
                    uniqueIDCount += 1;
                }
            }
        } else {
            MA_ZERO_MEMORY(hwid, sizeof(hwid));
        }

        MA_ZERO_OBJECT(&deviceInfo);
        ma_strncpy_s(deviceInfo.id.alsa, sizeof(deviceInfo.id.alsa), hwid, (size_t)-1);

        /*
        There's no good way to determine whether or not a device is the default on Linux. We're just going to do something simple and
        just use the name of "default" as the indicator.
        */
        if (ma_strcmp(deviceInfo.id.alsa, "default") == 0) {
            deviceInfo.isDefault = MA_TRUE;
        }


        /*
        DESC is the friendly name. We treat this slightly differently depending on whether or not we are using verbose
        device enumeration. In verbose mode we want to take the entire description so that the end-user can distinguish
        between the subdevices of each card/dev pair. In simplified mode, however, we only want the first part of the
        description.

        The value in DESC seems to be split into two lines, with the first line being the name of the device and the
        second line being a description of the device. I don't like having the description be across two lines because
        it makes formatting ugly and annoying. I'm therefore deciding to put it all on a single line with the second line
        being put into parentheses. In simplified mode I'm just stripping the second line entirely.
        */
        if (DESC != NULL) {
            int lfPos;
            const char* line2 = ma_find_char(DESC, '\n', &lfPos);
            if (line2 != NULL) {
                line2 += 1; /* Skip past the new-line character. */

                if (pContext->alsa.useVerboseDeviceEnumeration) {
                    /* Verbose mode. Put the second line in brackets. */
                    ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), DESC, lfPos);
                    ma_strcat_s (deviceInfo.name, sizeof(deviceInfo.name), " (");
                    ma_strcat_s (deviceInfo.name, sizeof(deviceInfo.name), line2);
                    ma_strcat_s (deviceInfo.name, sizeof(deviceInfo.name), ")");
                } else {
                    /* Simplified mode. Strip the second line entirely. */
                    ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), DESC, lfPos);
                }
            } else {
                /* There's no second line. Just copy the whole description. */
                ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), DESC, (size_t)-1);
            }
        }

        if (!ma_is_device_blacklisted__alsa(deviceType, NAME)) {
            cbResult = callback(pContext, deviceType, &deviceInfo, pUserData);
        }

        /*
        Some devices are both playback and capture, but they are only enumerated by ALSA once. We need to fire the callback
        again for the other device type in this case. We do this for known devices and where the IOID hint is NULL, which
        means both Input and Output.
        */
        if (cbResult) {
            if (ma_is_common_device_name__alsa(NAME) || IOID == NULL) {
                if (deviceType == ma_device_type_playback) {
                    if (!ma_is_capture_device_blacklisted__alsa(NAME)) {
                        cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
                    }
                } else {
                    if (!ma_is_playback_device_blacklisted__alsa(NAME)) {
                        cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
                    }
                }
            }
        }

        if (cbResult == MA_FALSE) {
            stopEnumeration = MA_TRUE;
        }

    next_device:
        free(NAME);
        free(DESC);
        free(IOID);
        ppNextDeviceHint += 1;

        /* We need to stop enumeration if the callback returned false. */
        if (stopEnumeration) {
            break;
        }
    }

    ma_free(pUniqueIDs, &pContext->allocationCallbacks);
    ((ma_snd_device_name_free_hint_proc)pContext->alsa.snd_device_name_free_hint)((void**)ppDeviceHints);

    ma_mutex_unlock(&pContext->alsa.internalDeviceEnumLock);

    return MA_SUCCESS;
}


typedef struct
{
    ma_device_type deviceType;
    const ma_device_id* pDeviceID;
    ma_share_mode shareMode;
    ma_device_info* pDeviceInfo;
    ma_bool32 foundDevice;
} ma_context_get_device_info_enum_callback_data__alsa;

static ma_bool32 ma_context_get_device_info_enum_callback__alsa(ma_context* pContext, ma_device_type deviceType, const ma_device_info* pDeviceInfo, void* pUserData)
{
    ma_context_get_device_info_enum_callback_data__alsa* pData = (ma_context_get_device_info_enum_callback_data__alsa*)pUserData;
    MA_ASSERT(pData != NULL);

    (void)pContext;

    if (pData->pDeviceID == NULL && ma_strcmp(pDeviceInfo->id.alsa, "default") == 0) {
        ma_strncpy_s(pData->pDeviceInfo->name, sizeof(pData->pDeviceInfo->name), pDeviceInfo->name, (size_t)-1);
        pData->foundDevice = MA_TRUE;
    } else {
        if (pData->deviceType == deviceType && (pData->pDeviceID != NULL && ma_strcmp(pData->pDeviceID->alsa, pDeviceInfo->id.alsa) == 0)) {
            ma_strncpy_s(pData->pDeviceInfo->name, sizeof(pData->pDeviceInfo->name), pDeviceInfo->name, (size_t)-1);
            pData->foundDevice = MA_TRUE;
        }
    }

    /* Keep enumerating until we have found the device. */
    return !pData->foundDevice;
}

static void ma_context_test_rate_and_add_native_data_format__alsa(ma_context* pContext, ma_snd_pcm_t* pPCM, ma_snd_pcm_hw_params_t* pHWParams, ma_format format, ma_uint32 channels, ma_uint32 sampleRate, ma_uint32 flags, ma_device_info* pDeviceInfo)
{
    MA_ASSERT(pPCM        != NULL);
    MA_ASSERT(pHWParams   != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    if (pDeviceInfo->nativeDataFormatCount < ma_countof(pDeviceInfo->nativeDataFormats) && ((ma_snd_pcm_hw_params_test_rate_proc)pContext->alsa.snd_pcm_hw_params_test_rate)(pPCM, pHWParams, sampleRate, 0) == 0) {
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = format;
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = channels;
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = sampleRate;
        pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = flags;
        pDeviceInfo->nativeDataFormatCount += 1;
    }
}

static void ma_context_iterate_rates_and_add_native_data_format__alsa(ma_context* pContext, ma_snd_pcm_t* pPCM, ma_snd_pcm_hw_params_t* pHWParams, ma_format format, ma_uint32 channels, ma_uint32 flags, ma_device_info* pDeviceInfo)
{
    ma_uint32 iSampleRate;
    unsigned int minSampleRate;
    unsigned int maxSampleRate;
    int sampleRateDir;  /* Not used. Just passed into snd_pcm_hw_params_get_rate_min/max(). */

    /* There could be a range. */
    ((ma_snd_pcm_hw_params_get_rate_min_proc)pContext->alsa.snd_pcm_hw_params_get_rate_min)(pHWParams, &minSampleRate, &sampleRateDir);
    ((ma_snd_pcm_hw_params_get_rate_max_proc)pContext->alsa.snd_pcm_hw_params_get_rate_max)(pHWParams, &maxSampleRate, &sampleRateDir);

    /* Make sure our sample rates are clamped to sane values. Stupid devices like "pulse" will reports rates like "1" which is ridiculous. */
    minSampleRate = ma_clamp(minSampleRate, (unsigned int)ma_standard_sample_rate_min, (unsigned int)ma_standard_sample_rate_max);
    maxSampleRate = ma_clamp(maxSampleRate, (unsigned int)ma_standard_sample_rate_min, (unsigned int)ma_standard_sample_rate_max);

    for (iSampleRate = 0; iSampleRate < ma_countof(g_maStandardSampleRatePriorities); iSampleRate += 1) {
        ma_uint32 standardSampleRate = g_maStandardSampleRatePriorities[iSampleRate];

        if (standardSampleRate >= minSampleRate && standardSampleRate <= maxSampleRate) {
            ma_context_test_rate_and_add_native_data_format__alsa(pContext, pPCM, pHWParams, format, channels, standardSampleRate, flags, pDeviceInfo);
        }
    }

    /* Now make sure our min and max rates are included just in case they aren't in the range of our standard rates. */
    if (!ma_is_standard_sample_rate(minSampleRate)) {
        ma_context_test_rate_and_add_native_data_format__alsa(pContext, pPCM, pHWParams, format, channels, minSampleRate, flags, pDeviceInfo);
    }

    if (!ma_is_standard_sample_rate(maxSampleRate) && maxSampleRate != minSampleRate) {
        ma_context_test_rate_and_add_native_data_format__alsa(pContext, pPCM, pHWParams, format, channels, maxSampleRate, flags, pDeviceInfo);
    }
}

static ma_result ma_context_get_device_info__alsa(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_context_get_device_info_enum_callback_data__alsa data;
    ma_result result;
    int resultALSA;
    ma_snd_pcm_t* pPCM;
    ma_snd_pcm_hw_params_t* pHWParams;
    ma_uint32 iFormat;
    ma_uint32 iChannel;

    MA_ASSERT(pContext != NULL);

    /* We just enumerate to find basic information about the device. */
    data.deviceType  = deviceType;
    data.pDeviceID   = pDeviceID;
    data.pDeviceInfo = pDeviceInfo;
    data.foundDevice = MA_FALSE;
    result = ma_context_enumerate_devices__alsa(pContext, ma_context_get_device_info_enum_callback__alsa, &data);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (!data.foundDevice) {
        return MA_NO_DEVICE;
    }

    if (ma_strcmp(pDeviceInfo->id.alsa, "default") == 0) {
        pDeviceInfo->isDefault = MA_TRUE;
    }

    /* For detailed info we need to open the device. */
    result = ma_context_open_pcm__alsa(pContext, ma_share_mode_shared, deviceType, pDeviceID, 0, &pPCM);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* We need to initialize a HW parameters object in order to know what formats are supported. */
    pHWParams = (ma_snd_pcm_hw_params_t*)ma_calloc(((ma_snd_pcm_hw_params_sizeof_proc)pContext->alsa.snd_pcm_hw_params_sizeof)(), &pContext->allocationCallbacks);
    if (pHWParams == NULL) {
        ((ma_snd_pcm_close_proc)pContext->alsa.snd_pcm_close)(pPCM);
        return MA_OUT_OF_MEMORY;
    }

    resultALSA = ((ma_snd_pcm_hw_params_any_proc)pContext->alsa.snd_pcm_hw_params_any)(pPCM, pHWParams);
    if (resultALSA < 0) {
        ma_free(pHWParams, &pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to initialize hardware parameters. snd_pcm_hw_params_any() failed.");
        return ma_result_from_errno(-resultALSA);
    }

    /*
    Some ALSA devices can support many permutations of formats, channels and rates. We only support
    a fixed number of permutations which means we need to employ some strategies to ensure the best
    combinations are returned. An example is the "pulse" device which can do its own data conversion
    in software and as a result can support any combination of format, channels and rate.

    We want to ensure that the first data formats are the best. We have a list of favored sample
    formats and sample rates, so these will be the basis of our iteration.
    */

    /* Formats. We just iterate over our standard formats and test them, making sure we reset the configuration space each iteration. */
    for (iFormat = 0; iFormat < ma_countof(g_maFormatPriorities); iFormat += 1) {
        ma_format format = g_maFormatPriorities[iFormat];

        /*
        For each format we need to make sure we reset the configuration space so we don't return
        channel counts and rates that aren't compatible with a format.
        */
        ((ma_snd_pcm_hw_params_any_proc)pContext->alsa.snd_pcm_hw_params_any)(pPCM, pHWParams);

        /* Test the format first. If this fails it means the format is not supported and we can skip it. */
        if (((ma_snd_pcm_hw_params_test_format_proc)pContext->alsa.snd_pcm_hw_params_test_format)(pPCM, pHWParams, ma_convert_ma_format_to_alsa_format(format)) == 0) {
            /* The format is supported. */
            unsigned int minChannels;
            unsigned int maxChannels;

            /*
            The configuration space needs to be restricted to this format so we can get an accurate
            picture of which sample rates and channel counts are support with this format.
            */
            ((ma_snd_pcm_hw_params_set_format_proc)pContext->alsa.snd_pcm_hw_params_set_format)(pPCM, pHWParams, ma_convert_ma_format_to_alsa_format(format));

            /* Now we need to check for supported channels. */
            ((ma_snd_pcm_hw_params_get_channels_min_proc)pContext->alsa.snd_pcm_hw_params_get_channels_min)(pHWParams, &minChannels);
            ((ma_snd_pcm_hw_params_get_channels_max_proc)pContext->alsa.snd_pcm_hw_params_get_channels_max)(pHWParams, &maxChannels);

            if (minChannels > MA_MAX_CHANNELS) {
                continue;   /* Too many channels. */
            }
            if (maxChannels < MA_MIN_CHANNELS) {
                continue;   /* Not enough channels. */
            }

            /*
            Make sure the channel count is clamped. This is mainly intended for the max channels
            because some devices can report an unbound maximum.
            */
            minChannels = ma_clamp(minChannels, MA_MIN_CHANNELS, MA_MAX_CHANNELS);
            maxChannels = ma_clamp(maxChannels, MA_MIN_CHANNELS, MA_MAX_CHANNELS);

            if (minChannels == MA_MIN_CHANNELS && maxChannels == MA_MAX_CHANNELS) {
                /* The device supports all channels. Don't iterate over every single one. Instead just set the channels to 0 which means all channels are supported. */
                ma_context_iterate_rates_and_add_native_data_format__alsa(pContext, pPCM, pHWParams, format, 0, 0, pDeviceInfo);    /* Intentionally setting the channel count to 0 as that means all channels are supported. */
            } else {
                /* The device only supports a specific set of channels. We need to iterate over all of them. */
                for (iChannel = minChannels; iChannel <= maxChannels; iChannel += 1) {
                    /* Test the channel before applying it to the configuration space. */
                    unsigned int channels = iChannel;

                    /* Make sure our channel range is reset before testing again or else we'll always fail the test. */
                    ((ma_snd_pcm_hw_params_any_proc)pContext->alsa.snd_pcm_hw_params_any)(pPCM, pHWParams);
                    ((ma_snd_pcm_hw_params_set_format_proc)pContext->alsa.snd_pcm_hw_params_set_format)(pPCM, pHWParams, ma_convert_ma_format_to_alsa_format(format));

                    if (((ma_snd_pcm_hw_params_test_channels_proc)pContext->alsa.snd_pcm_hw_params_test_channels)(pPCM, pHWParams, channels) == 0) {
                        /* The channel count is supported. */

                        /* The configuration space now needs to be restricted to the channel count before extracting the sample rate. */
                        ((ma_snd_pcm_hw_params_set_channels_proc)pContext->alsa.snd_pcm_hw_params_set_channels)(pPCM, pHWParams, channels);

                        /* Only after the configuration space has been restricted to the specific channel count should we iterate over our sample rates. */
                        ma_context_iterate_rates_and_add_native_data_format__alsa(pContext, pPCM, pHWParams, format, channels, 0, pDeviceInfo);
                    } else {
                        /* The channel count is not supported. Skip. */
                    }
                }
            }
        } else {
            /* The format is not supported. Skip. */
        }
    }

    ma_free(pHWParams, &pContext->allocationCallbacks);

    ((ma_snd_pcm_close_proc)pContext->alsa.snd_pcm_close)(pPCM);
    return MA_SUCCESS;
}

static ma_result ma_device_uninit__alsa(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if ((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture) {
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture);
        close(pDevice->alsa.wakeupfdCapture);
        ma_free(pDevice->alsa.pPollDescriptorsCapture, &pDevice->pContext->allocationCallbacks);
    }

    if ((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback) {
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback);
        close(pDevice->alsa.wakeupfdPlayback);
        ma_free(pDevice->alsa.pPollDescriptorsPlayback, &pDevice->pContext->allocationCallbacks);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_init_by_type__alsa(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptor, ma_device_type deviceType)
{
    ma_result result;
    int resultALSA;
    ma_snd_pcm_t* pPCM;
    ma_bool32 isUsingMMap;
    ma_snd_pcm_format_t formatALSA;
    ma_format internalFormat;
    ma_uint32 internalChannels;
    ma_uint32 internalSampleRate;
    ma_channel internalChannelMap[MA_MAX_CHANNELS];
    ma_uint32 internalPeriodSizeInFrames;
    ma_uint32 internalPeriods;
    int openMode;
    ma_snd_pcm_hw_params_t* pHWParams;
    ma_snd_pcm_sw_params_t* pSWParams;
    ma_snd_pcm_uframes_t bufferBoundary;
    int pollDescriptorCount;
    struct pollfd* pPollDescriptors;
    int wakeupfd;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(deviceType != ma_device_type_duplex); /* This function should only be called for playback _or_ capture, never duplex. */
    MA_ASSERT(pDevice != NULL);

    formatALSA = ma_convert_ma_format_to_alsa_format(pDescriptor->format);

    openMode = 0;
    if (pConfig->alsa.noAutoResample) {
        openMode |= MA_SND_PCM_NO_AUTO_RESAMPLE;
    }
    if (pConfig->alsa.noAutoChannels) {
        openMode |= MA_SND_PCM_NO_AUTO_CHANNELS;
    }
    if (pConfig->alsa.noAutoFormat) {
        openMode |= MA_SND_PCM_NO_AUTO_FORMAT;
    }

    result = ma_context_open_pcm__alsa(pDevice->pContext, pDescriptor->shareMode, deviceType, pDescriptor->pDeviceID, openMode, &pPCM);
    if (result != MA_SUCCESS) {
        return result;
    }


    /* Hardware parameters. */
    pHWParams = (ma_snd_pcm_hw_params_t*)ma_calloc(((ma_snd_pcm_hw_params_sizeof_proc)pDevice->pContext->alsa.snd_pcm_hw_params_sizeof)(), &pDevice->pContext->allocationCallbacks);
    if (pHWParams == NULL) {
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to allocate memory for hardware parameters.");
        return MA_OUT_OF_MEMORY;
    }

    resultALSA = ((ma_snd_pcm_hw_params_any_proc)pDevice->pContext->alsa.snd_pcm_hw_params_any)(pPCM, pHWParams);
    if (resultALSA < 0) {
        ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to initialize hardware parameters. snd_pcm_hw_params_any() failed.");
        return ma_result_from_errno(-resultALSA);
    }

    /* MMAP Mode. Try using interleaved MMAP access. If this fails, fall back to standard readi/writei. */
    isUsingMMap = MA_FALSE;
#if 0   /* NOTE: MMAP mode temporarily disabled. */
    if (deviceType != ma_device_type_capture) {    /* <-- Disabling MMAP mode for capture devices because I apparently do not have a device that supports it which means I can't test it... Contributions welcome. */
        if (!pConfig->alsa.noMMap) {
            if (((ma_snd_pcm_hw_params_set_access_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_access)(pPCM, pHWParams, MA_SND_PCM_ACCESS_MMAP_INTERLEAVED) == 0) {
                pDevice->alsa.isUsingMMap = MA_TRUE;
            }
        }
    }
#endif

    if (!isUsingMMap) {
        resultALSA = ((ma_snd_pcm_hw_params_set_access_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_access)(pPCM, pHWParams, MA_SND_PCM_ACCESS_RW_INTERLEAVED);
        if (resultALSA < 0) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set access mode to neither SND_PCM_ACCESS_MMAP_INTERLEAVED nor SND_PCM_ACCESS_RW_INTERLEAVED. snd_pcm_hw_params_set_access() failed.");
            return ma_result_from_errno(-resultALSA);
        }
    }

    /*
    Most important properties first. The documentation for OSS (yes, I know this is ALSA!) recommends format, channels, then sample rate. I can't
    find any documentation for ALSA specifically, so I'm going to copy the recommendation for OSS.
    */

    /* Format. */
    {
        /*
        At this point we should have a list of supported formats, so now we need to find the best one. We first check if the requested format is
        supported, and if so, use that one. If it's not supported, we just run though a list of formats and try to find the best one.
        */
        if (formatALSA == MA_SND_PCM_FORMAT_UNKNOWN || ((ma_snd_pcm_hw_params_test_format_proc)pDevice->pContext->alsa.snd_pcm_hw_params_test_format)(pPCM, pHWParams, formatALSA) != 0) {
            /* We're either requesting the native format or the specified format is not supported. */
            size_t iFormat;

            formatALSA = MA_SND_PCM_FORMAT_UNKNOWN;
            for (iFormat = 0; iFormat < ma_countof(g_maFormatPriorities); ++iFormat) {
                if (((ma_snd_pcm_hw_params_test_format_proc)pDevice->pContext->alsa.snd_pcm_hw_params_test_format)(pPCM, pHWParams, ma_convert_ma_format_to_alsa_format(g_maFormatPriorities[iFormat])) == 0) {
                    formatALSA = ma_convert_ma_format_to_alsa_format(g_maFormatPriorities[iFormat]);
                    break;
                }
            }

            if (formatALSA == MA_SND_PCM_FORMAT_UNKNOWN) {
                ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
                ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Format not supported. The device does not support any miniaudio formats.");
                return MA_FORMAT_NOT_SUPPORTED;
            }
        }

        resultALSA = ((ma_snd_pcm_hw_params_set_format_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_format)(pPCM, pHWParams, formatALSA);
        if (resultALSA < 0) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Format not supported. snd_pcm_hw_params_set_format() failed.");
            return ma_result_from_errno(-resultALSA);
        }

        internalFormat = ma_format_from_alsa(formatALSA);
        if (internalFormat == ma_format_unknown) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] The chosen format is not supported by miniaudio.");
            return MA_FORMAT_NOT_SUPPORTED;
        }
    }

    /* Channels. */
    {
        unsigned int channels = pDescriptor->channels;
        if (channels == 0) {
            channels = MA_DEFAULT_CHANNELS;
        }

        resultALSA = ((ma_snd_pcm_hw_params_set_channels_near_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_channels_near)(pPCM, pHWParams, &channels);
        if (resultALSA < 0) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set channel count. snd_pcm_hw_params_set_channels_near() failed.");
            return ma_result_from_errno(-resultALSA);
        }

        internalChannels = (ma_uint32)channels;
    }

    /* Sample Rate */
    {
        unsigned int sampleRate;

        /*
        It appears there's either a bug in ALSA, a bug in some drivers, or I'm doing something silly; but having resampling enabled causes
        problems with some device configurations when used in conjunction with MMAP access mode. To fix this problem we need to disable
        resampling.

        To reproduce this problem, open the "plug:dmix" device, and set the sample rate to 44100. Internally, it looks like dmix uses a
        sample rate of 48000. The hardware parameters will get set correctly with no errors, but it looks like the 44100 -> 48000 resampling
        doesn't work properly - but only with MMAP access mode. You will notice skipping/crackling in the audio, and it'll run at a slightly
        faster rate.

        miniaudio has built-in support for sample rate conversion (albeit low quality at the moment), so disabling resampling should be fine
        for us. The only problem is that it won't be taking advantage of any kind of hardware-accelerated resampling and it won't be very
        good quality until I get a chance to improve the quality of miniaudio's software sample rate conversion.

        I don't currently know if the dmix plugin is the only one with this error. Indeed, this is the only one I've been able to reproduce
        this error with. In the future, we may want to restrict the disabling of resampling to only known bad plugins.
        */
        ((ma_snd_pcm_hw_params_set_rate_resample_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_rate_resample)(pPCM, pHWParams, 0);

        sampleRate = pDescriptor->sampleRate;
        if (sampleRate == 0) {
            sampleRate = MA_DEFAULT_SAMPLE_RATE;
        }

        resultALSA = ((ma_snd_pcm_hw_params_set_rate_near_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_rate_near)(pPCM, pHWParams, &sampleRate, 0);
        if (resultALSA < 0) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Sample rate not supported. snd_pcm_hw_params_set_rate_near() failed.");
            return ma_result_from_errno(-resultALSA);
        }

        internalSampleRate = (ma_uint32)sampleRate;
    }

    /* Periods. */
    {
        ma_uint32 periods = pDescriptor->periodCount;

        resultALSA = ((ma_snd_pcm_hw_params_set_periods_near_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_periods_near)(pPCM, pHWParams, &periods, NULL);
        if (resultALSA < 0) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set period count. snd_pcm_hw_params_set_periods_near() failed.");
            return ma_result_from_errno(-resultALSA);
        }

        internalPeriods = periods;
    }

    /* Buffer Size */
    {
        ma_snd_pcm_uframes_t actualBufferSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, internalSampleRate, pConfig->performanceProfile) * internalPeriods;

        resultALSA = ((ma_snd_pcm_hw_params_set_buffer_size_near_proc)pDevice->pContext->alsa.snd_pcm_hw_params_set_buffer_size_near)(pPCM, pHWParams, &actualBufferSizeInFrames);
        if (resultALSA < 0) {
            ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set buffer size for device. snd_pcm_hw_params_set_buffer_size() failed.");
            return ma_result_from_errno(-resultALSA);
        }

        internalPeriodSizeInFrames = actualBufferSizeInFrames / internalPeriods;
    }

    /* Apply hardware parameters. */
    resultALSA = ((ma_snd_pcm_hw_params_proc)pDevice->pContext->alsa.snd_pcm_hw_params)(pPCM, pHWParams);
    if (resultALSA < 0) {
        ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set hardware parameters. snd_pcm_hw_params() failed.");
        return ma_result_from_errno(-resultALSA);
    }

    ma_free(pHWParams, &pDevice->pContext->allocationCallbacks);
    pHWParams = NULL;


    /* Software parameters. */
    pSWParams = (ma_snd_pcm_sw_params_t*)ma_calloc(((ma_snd_pcm_sw_params_sizeof_proc)pDevice->pContext->alsa.snd_pcm_sw_params_sizeof)(), &pDevice->pContext->allocationCallbacks);
    if (pSWParams == NULL) {
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to allocate memory for software parameters.");
        return MA_OUT_OF_MEMORY;
    }

    resultALSA = ((ma_snd_pcm_sw_params_current_proc)pDevice->pContext->alsa.snd_pcm_sw_params_current)(pPCM, pSWParams);
    if (resultALSA < 0) {
        ma_free(pSWParams, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to initialize software parameters. snd_pcm_sw_params_current() failed.");
        return ma_result_from_errno(-resultALSA);
    }

    resultALSA = ((ma_snd_pcm_sw_params_set_avail_min_proc)pDevice->pContext->alsa.snd_pcm_sw_params_set_avail_min)(pPCM, pSWParams, ma_prev_power_of_2(internalPeriodSizeInFrames));
    if (resultALSA < 0) {
        ma_free(pSWParams, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] snd_pcm_sw_params_set_avail_min() failed.");
        return ma_result_from_errno(-resultALSA);
    }

    resultALSA = ((ma_snd_pcm_sw_params_get_boundary_proc)pDevice->pContext->alsa.snd_pcm_sw_params_get_boundary)(pSWParams, &bufferBoundary);
    if (resultALSA < 0) {
        bufferBoundary = internalPeriodSizeInFrames * internalPeriods;
    }

    if (deviceType == ma_device_type_playback && !isUsingMMap) {   /* Only playback devices in writei/readi mode need a start threshold. */
        /*
        Subtle detail here with the start threshold. When in playback-only mode (no full-duplex) we can set the start threshold to
        the size of a period. But for full-duplex we need to set it such that it is at least two periods.
        */
        resultALSA = ((ma_snd_pcm_sw_params_set_start_threshold_proc)pDevice->pContext->alsa.snd_pcm_sw_params_set_start_threshold)(pPCM, pSWParams, internalPeriodSizeInFrames*2);
        if (resultALSA < 0) {
            ma_free(pSWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set start threshold for playback device. snd_pcm_sw_params_set_start_threshold() failed.");
            return ma_result_from_errno(-resultALSA);
        }

        resultALSA = ((ma_snd_pcm_sw_params_set_stop_threshold_proc)pDevice->pContext->alsa.snd_pcm_sw_params_set_stop_threshold)(pPCM, pSWParams, bufferBoundary);
        if (resultALSA < 0) { /* Set to boundary to loop instead of stop in the event of an xrun. */
            ma_free(pSWParams, &pDevice->pContext->allocationCallbacks);
            ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set stop threshold for playback device. snd_pcm_sw_params_set_stop_threshold() failed.");
            return ma_result_from_errno(-resultALSA);
        }
    }

    resultALSA = ((ma_snd_pcm_sw_params_proc)pDevice->pContext->alsa.snd_pcm_sw_params)(pPCM, pSWParams);
    if (resultALSA < 0) {
        ma_free(pSWParams, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to set software parameters. snd_pcm_sw_params() failed.");
        return ma_result_from_errno(-resultALSA);
    }

    ma_free(pSWParams, &pDevice->pContext->allocationCallbacks);
    pSWParams = NULL;


    /* Grab the internal channel map. For now we're not going to bother trying to change the channel map and instead just do it ourselves. */
    {
        ma_snd_pcm_chmap_t* pChmap = NULL;
        if (pDevice->pContext->alsa.snd_pcm_get_chmap != NULL) {
            pChmap = ((ma_snd_pcm_get_chmap_proc)pDevice->pContext->alsa.snd_pcm_get_chmap)(pPCM);
        }

        if (pChmap != NULL) {
            ma_uint32 iChannel;

            /* There are cases where the returned channel map can have a different channel count than was returned by snd_pcm_hw_params_set_channels_near(). */
            if (pChmap->channels >= internalChannels) {
                /* Drop excess channels. */
                for (iChannel = 0; iChannel < internalChannels; ++iChannel) {
                    internalChannelMap[iChannel] = ma_convert_alsa_channel_position_to_ma_channel(pChmap->pos[iChannel]);
                }
            } else {
                ma_uint32 i;

                /*
                Excess channels use defaults. Do an initial fill with defaults, overwrite the first pChmap->channels, validate to ensure there are no duplicate
                channels. If validation fails, fall back to defaults.
                */
                ma_bool32 isValid = MA_TRUE;

                /* Fill with defaults. */
                ma_channel_map_init_standard(ma_standard_channel_map_alsa, internalChannelMap, ma_countof(internalChannelMap), internalChannels);

                /* Overwrite first pChmap->channels channels. */
                for (iChannel = 0; iChannel < pChmap->channels; ++iChannel) {
                    internalChannelMap[iChannel] = ma_convert_alsa_channel_position_to_ma_channel(pChmap->pos[iChannel]);
                }

                /* Validate. */
                for (i = 0; i < internalChannels && isValid; ++i) {
                    ma_uint32 j;
                    for (j = i+1; j < internalChannels; ++j) {
                        if (internalChannelMap[i] == internalChannelMap[j]) {
                            isValid = MA_FALSE;
                            break;
                        }
                    }
                }

                /* If our channel map is invalid, fall back to defaults. */
                if (!isValid) {
                    ma_channel_map_init_standard(ma_standard_channel_map_alsa, internalChannelMap, ma_countof(internalChannelMap), internalChannels);
                }
            }

            free(pChmap);
            pChmap = NULL;
        } else {
            /* Could not retrieve the channel map. Fall back to a hard-coded assumption. */
            ma_channel_map_init_standard(ma_standard_channel_map_alsa, internalChannelMap, ma_countof(internalChannelMap), internalChannels);
        }
    }


    /*
    We need to retrieve the poll descriptors so we can use poll() to wait for data to become
    available for reading or writing. There's no well defined maximum for this so we're just going
    to allocate this on the heap.
    */
    pollDescriptorCount = ((ma_snd_pcm_poll_descriptors_count_proc)pDevice->pContext->alsa.snd_pcm_poll_descriptors_count)(pPCM);
    if (pollDescriptorCount <= 0) {
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to retrieve poll descriptors count.");
        return MA_ERROR;
    }

    pPollDescriptors = (struct pollfd*)ma_malloc(sizeof(*pPollDescriptors) * (pollDescriptorCount + 1), &pDevice->pContext->allocationCallbacks);   /* +1 because we want room for the wakeup descriptor. */
    if (pPollDescriptors == NULL) {
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to allocate memory for poll descriptors.");
        return MA_OUT_OF_MEMORY;
    }

    /*
    We need an eventfd to wakeup from poll() and avoid a deadlock in situations where the driver
    never returns from writei() and readi(). This has been observed with the "pulse" device.
    */
    wakeupfd = eventfd(0, 0);
    if (wakeupfd < 0) {
        ma_free(pPollDescriptors, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to create eventfd for poll wakeup.");
        return ma_result_from_errno(errno);
    }

    /* We'll place the wakeup fd at the start of the buffer. */
    pPollDescriptors[0].fd      = wakeupfd;
    pPollDescriptors[0].events  = POLLIN;    /* We only care about waiting to read from the wakeup file descriptor. */
    pPollDescriptors[0].revents = 0;

    /* We can now extract the PCM poll descriptors which we place after the wakeup descriptor. */
    pollDescriptorCount = ((ma_snd_pcm_poll_descriptors_proc)pDevice->pContext->alsa.snd_pcm_poll_descriptors)(pPCM, pPollDescriptors + 1, pollDescriptorCount);    /* +1 because we want to place these descriptors after the wakeup descriptor. */
    if (pollDescriptorCount <= 0) {
        close(wakeupfd);
        ma_free(pPollDescriptors, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to retrieve poll descriptors.");
        return MA_ERROR;
    }

    if (deviceType == ma_device_type_capture) {
        pDevice->alsa.pollDescriptorCountCapture = pollDescriptorCount;
        pDevice->alsa.pPollDescriptorsCapture = pPollDescriptors;
        pDevice->alsa.wakeupfdCapture = wakeupfd;
    } else {
        pDevice->alsa.pollDescriptorCountPlayback = pollDescriptorCount;
        pDevice->alsa.pPollDescriptorsPlayback = pPollDescriptors;
        pDevice->alsa.wakeupfdPlayback = wakeupfd;
    }


    /* We're done. Prepare the device. */
    resultALSA = ((ma_snd_pcm_prepare_proc)pDevice->pContext->alsa.snd_pcm_prepare)(pPCM);
    if (resultALSA < 0) {
        close(wakeupfd);
        ma_free(pPollDescriptors, &pDevice->pContext->allocationCallbacks);
        ((ma_snd_pcm_close_proc)pDevice->pContext->alsa.snd_pcm_close)(pPCM);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to prepare device.");
        return ma_result_from_errno(-resultALSA);
    }


    if (deviceType == ma_device_type_capture) {
        pDevice->alsa.pPCMCapture         = (ma_ptr)pPCM;
        pDevice->alsa.isUsingMMapCapture  = isUsingMMap;
    } else {
        pDevice->alsa.pPCMPlayback        = (ma_ptr)pPCM;
        pDevice->alsa.isUsingMMapPlayback = isUsingMMap;
    }

    pDescriptor->format             = internalFormat;
    pDescriptor->channels           = internalChannels;
    pDescriptor->sampleRate         = internalSampleRate;
    ma_channel_map_copy(pDescriptor->channelMap, internalChannelMap, ma_min(internalChannels, MA_MAX_CHANNELS));
    pDescriptor->periodSizeInFrames = internalPeriodSizeInFrames;
    pDescriptor->periodCount        = internalPeriods;

    return MA_SUCCESS;
}

static ma_result ma_device_init__alsa(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->alsa);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_by_type__alsa(pDevice, pConfig, pDescriptorCapture, ma_device_type_capture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_by_type__alsa(pDevice, pConfig, pDescriptorPlayback, ma_device_type_playback);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__alsa(ma_device* pDevice)
{
    int resultALSA;

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        resultALSA = ((ma_snd_pcm_start_proc)pDevice->pContext->alsa.snd_pcm_start)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture);
        if (resultALSA < 0) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to start capture device.");
            return ma_result_from_errno(-resultALSA);
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        /*        
        When data is written to the device we wait for the device to get ready to receive data with poll(). In my testing
        I have observed that poll() can sometimes block forever unless the device is started explicitly with snd_pcm_start()
        or some data is written with snd_pcm_writei().

        To resolve this I've decided to do an explicit start with snd_pcm_start(). The problem with this is that the device
        is started without any data in the internal buffer which will result in an immediate underrun. If instead we were
        to call into snd_pcm_writei() in an attempt to prevent the underrun, we would run the risk of a weird deadlock
        issue as documented inside ma_device_write__alsa().
        */
        resultALSA = ((ma_snd_pcm_start_proc)pDevice->pContext->alsa.snd_pcm_start)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback);
        if (resultALSA < 0) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to start playback device.");
            return ma_result_from_errno(-resultALSA);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__alsa(ma_device* pDevice)
{
    /*
    The stop callback will get called on the worker thread after read/write__alsa() has returned. At this point there is
    a small chance that our wakeupfd has not been cleared. We'll clear that out now if applicable.
    */
    int resultPoll;
    int resultRead;

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Dropping capture device...\n");
        ((ma_snd_pcm_drop_proc)pDevice->pContext->alsa.snd_pcm_drop)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture);
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Dropping capture device successful.\n");

        /* We need to prepare the device again, otherwise we won't be able to restart the device. */
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Preparing capture device...\n");
        if (((ma_snd_pcm_prepare_proc)pDevice->pContext->alsa.snd_pcm_prepare)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture) < 0) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Preparing capture device failed.\n");
        } else {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Preparing capture device successful.\n");
        }

        /* Clear the wakeupfd. */
        resultPoll = poll((struct pollfd*)pDevice->alsa.pPollDescriptorsCapture, 1, 0);
        if (resultPoll > 0) {
            ma_uint64 t;
            resultRead = read(((struct pollfd*)pDevice->alsa.pPollDescriptorsCapture)[0].fd, &t, sizeof(t));
            if (resultRead != sizeof(t)) {
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Failed to read from capture wakeupfd. read() = %d\n", resultRead);
            }
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Dropping playback device...\n");
        ((ma_snd_pcm_drop_proc)pDevice->pContext->alsa.snd_pcm_drop)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback);
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Dropping playback device successful.\n");

        /* We need to prepare the device again, otherwise we won't be able to restart the device. */
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Preparing playback device...\n");
        if (((ma_snd_pcm_prepare_proc)pDevice->pContext->alsa.snd_pcm_prepare)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback) < 0) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Preparing playback device failed.\n");
        } else {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Preparing playback device successful.\n");
        }

        /* Clear the wakeupfd. */
        resultPoll = poll((struct pollfd*)pDevice->alsa.pPollDescriptorsPlayback, 1, 0);
        if (resultPoll > 0) {
            ma_uint64 t;
            resultRead = read(((struct pollfd*)pDevice->alsa.pPollDescriptorsPlayback)[0].fd, &t, sizeof(t));
            if (resultRead != sizeof(t)) {
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Failed to read from playback wakeupfd. read() = %d\n", resultRead);
            }
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_wait__alsa(ma_device* pDevice, ma_snd_pcm_t* pPCM, struct pollfd* pPollDescriptors, int pollDescriptorCount, short requiredEvent)
{
    for (;;) {
        unsigned short revents;
        int resultALSA;
        int resultPoll = poll(pPollDescriptors, pollDescriptorCount, -1);
        if (resultPoll < 0) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[ALSA] poll() failed.\n");

            /*
            There have been reports that poll() is returning an error randomly and that instead of
            returning an error, simply trying again will work. I'm experimenting with adopting this
            advice.
            */
            continue;
            /*return ma_result_from_errno(errno);*/
        }

        /*
        Before checking the ALSA poll descriptor flag we need to check if the wakeup descriptor
        has had it's POLLIN flag set. If so, we need to actually read the data and then exit the
        function. The wakeup descriptor will be the first item in the descriptors buffer.
        */
        if ((pPollDescriptors[0].revents & POLLIN) != 0) {
            ma_uint64 t;
            int resultRead = read(pPollDescriptors[0].fd, &t, sizeof(t));    /* <-- Important that we read here so that the next write() does not block. */
            if (resultRead < 0) {
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] read() failed.\n");
                return ma_result_from_errno(errno);
            }

            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] POLLIN set for wakeupfd\n");
            return MA_DEVICE_NOT_STARTED;
        }

        /*
        Getting here means that some data should be able to be read. We need to use ALSA to
        translate the revents flags for us.
        */
        resultALSA = ((ma_snd_pcm_poll_descriptors_revents_proc)pDevice->pContext->alsa.snd_pcm_poll_descriptors_revents)(pPCM, pPollDescriptors + 1, pollDescriptorCount - 1, &revents);   /* +1, -1 to ignore the wakeup descriptor. */
        if (resultALSA < 0) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] snd_pcm_poll_descriptors_revents() failed.\n");
            return ma_result_from_errno(-resultALSA);
        }

        if ((revents & POLLERR) != 0) {
            ma_snd_pcm_state_t state = ((ma_snd_pcm_state_proc)pDevice->pContext->alsa.snd_pcm_state)(pPCM);
            if (state == MA_SND_PCM_STATE_XRUN) {
                /* The PCM is in a xrun state. This will be recovered from at a higher level. We can disregard this. */
            } else {
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[ALSA] POLLERR detected. status = %d\n", ((ma_snd_pcm_state_proc)pDevice->pContext->alsa.snd_pcm_state)(pPCM));
            }
        }

        if ((revents & requiredEvent) == requiredEvent) {
            break;  /* We're done. Data available for reading or writing. */
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_wait_read__alsa(ma_device* pDevice)
{
    return ma_device_wait__alsa(pDevice, (ma_snd_pcm_t*)pDevice->alsa.pPCMCapture, (struct pollfd*)pDevice->alsa.pPollDescriptorsCapture, pDevice->alsa.pollDescriptorCountCapture + 1, POLLIN); /* +1 to account for the wakeup descriptor. */
}

static ma_result ma_device_wait_write__alsa(ma_device* pDevice)
{
    return ma_device_wait__alsa(pDevice, (ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback, (struct pollfd*)pDevice->alsa.pPollDescriptorsPlayback, pDevice->alsa.pollDescriptorCountPlayback + 1, POLLOUT); /* +1 to account for the wakeup descriptor. */
}

static ma_result ma_device_read__alsa(ma_device* pDevice, void* pFramesOut, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    ma_snd_pcm_sframes_t resultALSA = 0;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pFramesOut != NULL);

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    while (ma_device_get_state(pDevice) == ma_device_state_started) {
        ma_result result;

        /* The first thing to do is wait for data to become available for reading. This will return an error code if the device has been stopped. */
        result = ma_device_wait_read__alsa(pDevice);
        if (result != MA_SUCCESS) {
            return result;
        }

        /* Getting here means we should have data available. */
        resultALSA = ((ma_snd_pcm_readi_proc)pDevice->pContext->alsa.snd_pcm_readi)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture, pFramesOut, frameCount);
        if (resultALSA >= 0) {
            break;  /* Success. */
        } else {
            if (resultALSA == -EAGAIN) {
                /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "EGAIN (read)\n");*/
                continue;   /* Try again. */
            } else if (resultALSA == -EPIPE) {
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "EPIPE (read)\n");

                /* Overrun. Recover and try again. If this fails we need to return an error. */
                resultALSA = ((ma_snd_pcm_recover_proc)pDevice->pContext->alsa.snd_pcm_recover)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture, resultALSA, MA_TRUE);
                if (resultALSA < 0) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to recover device after overrun.");
                    return ma_result_from_errno((int)-resultALSA);
                }

                resultALSA = ((ma_snd_pcm_start_proc)pDevice->pContext->alsa.snd_pcm_start)((ma_snd_pcm_t*)pDevice->alsa.pPCMCapture);
                if (resultALSA < 0) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to start device after underrun.");
                    return ma_result_from_errno((int)-resultALSA);
                }

                continue;   /* Try reading again. */
            }
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = resultALSA;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_write__alsa(ma_device* pDevice, const void* pFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    ma_snd_pcm_sframes_t resultALSA = 0;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pFrames != NULL);

    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    while (ma_device_get_state(pDevice) == ma_device_state_started) {
        ma_result result;

        /* The first thing to do is wait for space to become available for writing. This will return an error code if the device has been stopped. */
        result = ma_device_wait_write__alsa(pDevice);
        if (result != MA_SUCCESS) {
            return result;
        }

        resultALSA = ((ma_snd_pcm_writei_proc)pDevice->pContext->alsa.snd_pcm_writei)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback, pFrames, frameCount);
        if (resultALSA >= 0) {
            break;  /* Success. */
        } else {
            if (resultALSA == -EAGAIN) {
                /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "EGAIN (write)\n");*/
                continue;   /* Try again. */
            } else if (resultALSA == -EPIPE) {
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "EPIPE (write)\n");

                /* Underrun. Recover and try again. If this fails we need to return an error. */
                resultALSA = ((ma_snd_pcm_recover_proc)pDevice->pContext->alsa.snd_pcm_recover)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback, resultALSA, MA_TRUE);    /* MA_TRUE=silent (don't print anything on error). */
                if (resultALSA < 0) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to recover device after underrun.");
                    return ma_result_from_errno((int)-resultALSA);
                }

                /*
                In my testing I have had a situation where writei() does not automatically restart the device even though I've set it
                up as such in the software parameters. What will happen is writei() will block indefinitely even though the number of
                frames is well beyond the auto-start threshold. To work around this I've needed to add an explicit start here. Not sure
                if this is me just being stupid and not recovering the device properly, but this definitely feels like something isn't
                quite right here.
                */
                resultALSA = ((ma_snd_pcm_start_proc)pDevice->pContext->alsa.snd_pcm_start)((ma_snd_pcm_t*)pDevice->alsa.pPCMPlayback);
                if (resultALSA < 0) {
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] Failed to start device after underrun.");
                    return ma_result_from_errno((int)-resultALSA);
                }

                continue;   /* Try writing again. */
            }
        }
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = resultALSA;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_data_loop_wakeup__alsa(ma_device* pDevice)
{
    ma_uint64 t = 1;
    int resultWrite = 0;

    MA_ASSERT(pDevice != NULL);

    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Waking up...\n");

    /* Write to an eventfd to trigger a wakeup from poll() and abort any reading or writing. */
    if (pDevice->alsa.pPollDescriptorsCapture != NULL) {
        resultWrite = write(pDevice->alsa.wakeupfdCapture, &t, sizeof(t));
    }
    if (pDevice->alsa.pPollDescriptorsPlayback != NULL) {
        resultWrite = write(pDevice->alsa.wakeupfdPlayback, &t, sizeof(t));
    }

    if (resultWrite < 0) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[ALSA] write() failed.\n");
        return ma_result_from_errno(errno);
    }

    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[ALSA] Waking up completed successfully.\n");

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__alsa(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_alsa);

    /* Clean up memory for memory leak checkers. */
    ((ma_snd_config_update_free_global_proc)pContext->alsa.snd_config_update_free_global)();

#ifndef MA_NO_RUNTIME_LINKING
    ma_dlclose(ma_context_get_log(pContext), pContext->alsa.asoundSO);
#endif

    ma_mutex_uninit(&pContext->alsa.internalDeviceEnumLock);

    return MA_SUCCESS;
}

static ma_result ma_context_init__alsa(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    ma_result result;
#ifndef MA_NO_RUNTIME_LINKING
    const char* libasoundNames[] = {
        "libasound.so.2",
        "libasound.so"
    };
    size_t i;

    for (i = 0; i < ma_countof(libasoundNames); ++i) {
        pContext->alsa.asoundSO = ma_dlopen(ma_context_get_log(pContext), libasoundNames[i]);
        if (pContext->alsa.asoundSO != NULL) {
            break;
        }
    }

    if (pContext->alsa.asoundSO == NULL) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "[ALSA] Failed to open shared object.\n");
        return MA_NO_BACKEND;
    }

    pContext->alsa.snd_pcm_open                           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_open");
    pContext->alsa.snd_pcm_close                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_close");
    pContext->alsa.snd_pcm_hw_params_sizeof               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_sizeof");
    pContext->alsa.snd_pcm_hw_params_any                  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_any");
    pContext->alsa.snd_pcm_hw_params_set_format           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_format");
    pContext->alsa.snd_pcm_hw_params_set_format_first     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_format_first");
    pContext->alsa.snd_pcm_hw_params_get_format_mask      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_format_mask");
    pContext->alsa.snd_pcm_hw_params_set_channels         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_channels");
    pContext->alsa.snd_pcm_hw_params_set_channels_near    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_channels_near");
    pContext->alsa.snd_pcm_hw_params_set_channels_minmax  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_channels_minmax");
    pContext->alsa.snd_pcm_hw_params_set_rate_resample    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_rate_resample");
    pContext->alsa.snd_pcm_hw_params_set_rate             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_rate");
    pContext->alsa.snd_pcm_hw_params_set_rate_near        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_rate_near");
    pContext->alsa.snd_pcm_hw_params_set_buffer_size_near = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_buffer_size_near");
    pContext->alsa.snd_pcm_hw_params_set_periods_near     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_periods_near");
    pContext->alsa.snd_pcm_hw_params_set_access           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_set_access");
    pContext->alsa.snd_pcm_hw_params_get_format           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_format");
    pContext->alsa.snd_pcm_hw_params_get_channels         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_channels");
    pContext->alsa.snd_pcm_hw_params_get_channels_min     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_channels_min");
    pContext->alsa.snd_pcm_hw_params_get_channels_max     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_channels_max");
    pContext->alsa.snd_pcm_hw_params_get_rate             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_rate");
    pContext->alsa.snd_pcm_hw_params_get_rate_min         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_rate_min");
    pContext->alsa.snd_pcm_hw_params_get_rate_max         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_rate_max");
    pContext->alsa.snd_pcm_hw_params_get_buffer_size      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_buffer_size");
    pContext->alsa.snd_pcm_hw_params_get_periods          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_periods");
    pContext->alsa.snd_pcm_hw_params_get_access           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_get_access");
    pContext->alsa.snd_pcm_hw_params_test_format          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_test_format");
    pContext->alsa.snd_pcm_hw_params_test_channels        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_test_channels");
    pContext->alsa.snd_pcm_hw_params_test_rate            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params_test_rate");
    pContext->alsa.snd_pcm_hw_params                      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_hw_params");
    pContext->alsa.snd_pcm_sw_params_sizeof               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params_sizeof");
    pContext->alsa.snd_pcm_sw_params_current              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params_current");
    pContext->alsa.snd_pcm_sw_params_get_boundary         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params_get_boundary");
    pContext->alsa.snd_pcm_sw_params_set_avail_min        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params_set_avail_min");
    pContext->alsa.snd_pcm_sw_params_set_start_threshold  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params_set_start_threshold");
    pContext->alsa.snd_pcm_sw_params_set_stop_threshold   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params_set_stop_threshold");
    pContext->alsa.snd_pcm_sw_params                      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_sw_params");
    pContext->alsa.snd_pcm_format_mask_sizeof             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_format_mask_sizeof");
    pContext->alsa.snd_pcm_format_mask_test               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_format_mask_test");
    pContext->alsa.snd_pcm_get_chmap                      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_get_chmap");
    pContext->alsa.snd_pcm_state                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_state");
    pContext->alsa.snd_pcm_prepare                        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_prepare");
    pContext->alsa.snd_pcm_start                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_start");
    pContext->alsa.snd_pcm_drop                           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_drop");
    pContext->alsa.snd_pcm_drain                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_drain");
    pContext->alsa.snd_pcm_reset                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_reset");
    pContext->alsa.snd_device_name_hint                   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_device_name_hint");
    pContext->alsa.snd_device_name_get_hint               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_device_name_get_hint");
    pContext->alsa.snd_card_get_index                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_card_get_index");
    pContext->alsa.snd_device_name_free_hint              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_device_name_free_hint");
    pContext->alsa.snd_pcm_mmap_begin                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_mmap_begin");
    pContext->alsa.snd_pcm_mmap_commit                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_mmap_commit");
    pContext->alsa.snd_pcm_recover                        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_recover");
    pContext->alsa.snd_pcm_readi                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_readi");
    pContext->alsa.snd_pcm_writei                         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_writei");
    pContext->alsa.snd_pcm_avail                          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_avail");
    pContext->alsa.snd_pcm_avail_update                   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_avail_update");
    pContext->alsa.snd_pcm_wait                           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_wait");
    pContext->alsa.snd_pcm_nonblock                       = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_nonblock");
    pContext->alsa.snd_pcm_info                           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_info");
    pContext->alsa.snd_pcm_info_sizeof                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_info_sizeof");
    pContext->alsa.snd_pcm_info_get_name                  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_info_get_name");
    pContext->alsa.snd_pcm_poll_descriptors               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_poll_descriptors");
    pContext->alsa.snd_pcm_poll_descriptors_count         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_poll_descriptors_count");
    pContext->alsa.snd_pcm_poll_descriptors_revents       = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_pcm_poll_descriptors_revents");
    pContext->alsa.snd_config_update_free_global          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->alsa.asoundSO, "snd_config_update_free_global");
#else
    /* The system below is just for type safety. */
    ma_snd_pcm_open_proc                           _snd_pcm_open                           = snd_pcm_open;
    ma_snd_pcm_close_proc                          _snd_pcm_close                          = snd_pcm_close;
    ma_snd_pcm_hw_params_sizeof_proc               _snd_pcm_hw_params_sizeof               = snd_pcm_hw_params_sizeof;
    ma_snd_pcm_hw_params_any_proc                  _snd_pcm_hw_params_any                  = snd_pcm_hw_params_any;
    ma_snd_pcm_hw_params_set_format_proc           _snd_pcm_hw_params_set_format           = snd_pcm_hw_params_set_format;
    ma_snd_pcm_hw_params_set_format_first_proc     _snd_pcm_hw_params_set_format_first     = snd_pcm_hw_params_set_format_first;
    ma_snd_pcm_hw_params_get_format_mask_proc      _snd_pcm_hw_params_get_format_mask      = snd_pcm_hw_params_get_format_mask;
    ma_snd_pcm_hw_params_set_channels_proc         _snd_pcm_hw_params_set_channels         = snd_pcm_hw_params_set_channels;
    ma_snd_pcm_hw_params_set_channels_near_proc    _snd_pcm_hw_params_set_channels_near    = snd_pcm_hw_params_set_channels_near;
    ma_snd_pcm_hw_params_set_rate_resample_proc    _snd_pcm_hw_params_set_rate_resample    = snd_pcm_hw_params_set_rate_resample;
    ma_snd_pcm_hw_params_set_rate_near             _snd_pcm_hw_params_set_rate             = snd_pcm_hw_params_set_rate;
    ma_snd_pcm_hw_params_set_rate_near_proc        _snd_pcm_hw_params_set_rate_near        = snd_pcm_hw_params_set_rate_near;
    ma_snd_pcm_hw_params_set_rate_minmax_proc      _snd_pcm_hw_params_set_rate_minmax      = snd_pcm_hw_params_set_rate_minmax;
    ma_snd_pcm_hw_params_set_buffer_size_near_proc _snd_pcm_hw_params_set_buffer_size_near = snd_pcm_hw_params_set_buffer_size_near;
    ma_snd_pcm_hw_params_set_periods_near_proc     _snd_pcm_hw_params_set_periods_near     = snd_pcm_hw_params_set_periods_near;
    ma_snd_pcm_hw_params_set_access_proc           _snd_pcm_hw_params_set_access           = snd_pcm_hw_params_set_access;
    ma_snd_pcm_hw_params_get_format_proc           _snd_pcm_hw_params_get_format           = snd_pcm_hw_params_get_format;
    ma_snd_pcm_hw_params_get_channels_proc         _snd_pcm_hw_params_get_channels         = snd_pcm_hw_params_get_channels;
    ma_snd_pcm_hw_params_get_channels_min_proc     _snd_pcm_hw_params_get_channels_min     = snd_pcm_hw_params_get_channels_min;
    ma_snd_pcm_hw_params_get_channels_max_proc     _snd_pcm_hw_params_get_channels_max     = snd_pcm_hw_params_get_channels_max;
    ma_snd_pcm_hw_params_get_rate_proc             _snd_pcm_hw_params_get_rate             = snd_pcm_hw_params_get_rate;
    ma_snd_pcm_hw_params_get_rate_min_proc         _snd_pcm_hw_params_get_rate_min         = snd_pcm_hw_params_get_rate_min;
    ma_snd_pcm_hw_params_get_rate_max_proc         _snd_pcm_hw_params_get_rate_max         = snd_pcm_hw_params_get_rate_max;
    ma_snd_pcm_hw_params_get_buffer_size_proc      _snd_pcm_hw_params_get_buffer_size      = snd_pcm_hw_params_get_buffer_size;
    ma_snd_pcm_hw_params_get_periods_proc          _snd_pcm_hw_params_get_periods          = snd_pcm_hw_params_get_periods;
    ma_snd_pcm_hw_params_get_access_proc           _snd_pcm_hw_params_get_access           = snd_pcm_hw_params_get_access;
    ma_snd_pcm_hw_params_test_format_proc          _snd_pcm_hw_params_test_format          = snd_pcm_hw_params_test_format;
    ma_snd_pcm_hw_params_test_channels_proc        _snd_pcm_hw_params_test_channels        = snd_pcm_hw_params_test_channels;
    ma_snd_pcm_hw_params_test_rate_proc            _snd_pcm_hw_params_test_rate            = snd_pcm_hw_params_test_rate;
    ma_snd_pcm_hw_params_proc                      _snd_pcm_hw_params                      = snd_pcm_hw_params;
    ma_snd_pcm_sw_params_sizeof_proc               _snd_pcm_sw_params_sizeof               = snd_pcm_sw_params_sizeof;
    ma_snd_pcm_sw_params_current_proc              _snd_pcm_sw_params_current              = snd_pcm_sw_params_current;
    ma_snd_pcm_sw_params_get_boundary_proc         _snd_pcm_sw_params_get_boundary         = snd_pcm_sw_params_get_boundary;
    ma_snd_pcm_sw_params_set_avail_min_proc        _snd_pcm_sw_params_set_avail_min        = snd_pcm_sw_params_set_avail_min;
    ma_snd_pcm_sw_params_set_start_threshold_proc  _snd_pcm_sw_params_set_start_threshold  = snd_pcm_sw_params_set_start_threshold;
    ma_snd_pcm_sw_params_set_stop_threshold_proc   _snd_pcm_sw_params_set_stop_threshold   = snd_pcm_sw_params_set_stop_threshold;
    ma_snd_pcm_sw_params_proc                      _snd_pcm_sw_params                      = snd_pcm_sw_params;
    ma_snd_pcm_format_mask_sizeof_proc             _snd_pcm_format_mask_sizeof             = snd_pcm_format_mask_sizeof;
    ma_snd_pcm_format_mask_test_proc               _snd_pcm_format_mask_test               = snd_pcm_format_mask_test;
    ma_snd_pcm_get_chmap_proc                      _snd_pcm_get_chmap                      = snd_pcm_get_chmap;
    ma_snd_pcm_state_proc                          _snd_pcm_state                          = snd_pcm_state;
    ma_snd_pcm_prepare_proc                        _snd_pcm_prepare                        = snd_pcm_prepare;
    ma_snd_pcm_start_proc                          _snd_pcm_start                          = snd_pcm_start;
    ma_snd_pcm_drop_proc                           _snd_pcm_drop                           = snd_pcm_drop;
    ma_snd_pcm_drain_proc                          _snd_pcm_drain                          = snd_pcm_drain;
    ma_snd_pcm_reset_proc                          _snd_pcm_reset                          = snd_pcm_reset;
    ma_snd_device_name_hint_proc                   _snd_device_name_hint                   = snd_device_name_hint;
    ma_snd_device_name_get_hint_proc               _snd_device_name_get_hint               = snd_device_name_get_hint;
    ma_snd_card_get_index_proc                     _snd_card_get_index                     = snd_card_get_index;
    ma_snd_device_name_free_hint_proc              _snd_device_name_free_hint              = snd_device_name_free_hint;
    ma_snd_pcm_mmap_begin_proc                     _snd_pcm_mmap_begin                     = snd_pcm_mmap_begin;
    ma_snd_pcm_mmap_commit_proc                    _snd_pcm_mmap_commit                    = snd_pcm_mmap_commit;
    ma_snd_pcm_recover_proc                        _snd_pcm_recover                        = snd_pcm_recover;
    ma_snd_pcm_readi_proc                          _snd_pcm_readi                          = snd_pcm_readi;
    ma_snd_pcm_writei_proc                         _snd_pcm_writei                         = snd_pcm_writei;
    ma_snd_pcm_avail_proc                          _snd_pcm_avail                          = snd_pcm_avail;
    ma_snd_pcm_avail_update_proc                   _snd_pcm_avail_update                   = snd_pcm_avail_update;
    ma_snd_pcm_wait_proc                           _snd_pcm_wait                           = snd_pcm_wait;
    ma_snd_pcm_nonblock_proc                       _snd_pcm_nonblock                       = snd_pcm_nonblock;
    ma_snd_pcm_info_proc                           _snd_pcm_info                           = snd_pcm_info;
    ma_snd_pcm_info_sizeof_proc                    _snd_pcm_info_sizeof                    = snd_pcm_info_sizeof;
    ma_snd_pcm_info_get_name_proc                  _snd_pcm_info_get_name                  = snd_pcm_info_get_name;
    ma_snd_pcm_poll_descriptors                    _snd_pcm_poll_descriptors               = snd_pcm_poll_descriptors;
    ma_snd_pcm_poll_descriptors_count              _snd_pcm_poll_descriptors_count         = snd_pcm_poll_descriptors_count;
    ma_snd_pcm_poll_descriptors_revents            _snd_pcm_poll_descriptors_revents       = snd_pcm_poll_descriptors_revents;
    ma_snd_config_update_free_global_proc          _snd_config_update_free_global          = snd_config_update_free_global;

    pContext->alsa.snd_pcm_open                           = (ma_proc)_snd_pcm_open;
    pContext->alsa.snd_pcm_close                          = (ma_proc)_snd_pcm_close;
    pContext->alsa.snd_pcm_hw_params_sizeof               = (ma_proc)_snd_pcm_hw_params_sizeof;
    pContext->alsa.snd_pcm_hw_params_any                  = (ma_proc)_snd_pcm_hw_params_any;
    pContext->alsa.snd_pcm_hw_params_set_format           = (ma_proc)_snd_pcm_hw_params_set_format;
    pContext->alsa.snd_pcm_hw_params_set_format_first     = (ma_proc)_snd_pcm_hw_params_set_format_first;
    pContext->alsa.snd_pcm_hw_params_get_format_mask      = (ma_proc)_snd_pcm_hw_params_get_format_mask;
    pContext->alsa.snd_pcm_hw_params_set_channels         = (ma_proc)_snd_pcm_hw_params_set_channels;
    pContext->alsa.snd_pcm_hw_params_set_channels_near    = (ma_proc)_snd_pcm_hw_params_set_channels_near;
    pContext->alsa.snd_pcm_hw_params_set_channels_minmax  = (ma_proc)_snd_pcm_hw_params_set_channels_minmax;
    pContext->alsa.snd_pcm_hw_params_set_rate_resample    = (ma_proc)_snd_pcm_hw_params_set_rate_resample;
    pContext->alsa.snd_pcm_hw_params_set_rate             = (ma_proc)_snd_pcm_hw_params_set_rate;
    pContext->alsa.snd_pcm_hw_params_set_rate_near        = (ma_proc)_snd_pcm_hw_params_set_rate_near;
    pContext->alsa.snd_pcm_hw_params_set_buffer_size_near = (ma_proc)_snd_pcm_hw_params_set_buffer_size_near;
    pContext->alsa.snd_pcm_hw_params_set_periods_near     = (ma_proc)_snd_pcm_hw_params_set_periods_near;
    pContext->alsa.snd_pcm_hw_params_set_access           = (ma_proc)_snd_pcm_hw_params_set_access;
    pContext->alsa.snd_pcm_hw_params_get_format           = (ma_proc)_snd_pcm_hw_params_get_format;
    pContext->alsa.snd_pcm_hw_params_get_channels         = (ma_proc)_snd_pcm_hw_params_get_channels;
    pContext->alsa.snd_pcm_hw_params_get_channels_min     = (ma_proc)_snd_pcm_hw_params_get_channels_min;
    pContext->alsa.snd_pcm_hw_params_get_channels_max     = (ma_proc)_snd_pcm_hw_params_get_channels_max;
    pContext->alsa.snd_pcm_hw_params_get_rate             = (ma_proc)_snd_pcm_hw_params_get_rate;
    pContext->alsa.snd_pcm_hw_params_get_rate_min         = (ma_proc)_snd_pcm_hw_params_get_rate_min;
    pContext->alsa.snd_pcm_hw_params_get_rate_max         = (ma_proc)_snd_pcm_hw_params_get_rate_max;
    pContext->alsa.snd_pcm_hw_params_get_buffer_size      = (ma_proc)_snd_pcm_hw_params_get_buffer_size;
    pContext->alsa.snd_pcm_hw_params_get_periods          = (ma_proc)_snd_pcm_hw_params_get_periods;
    pContext->alsa.snd_pcm_hw_params_get_access           = (ma_proc)_snd_pcm_hw_params_get_access;
    pContext->alsa.snd_pcm_hw_params_test_format          = (ma_proc)_snd_pcm_hw_params_test_format;
    pContext->alsa.snd_pcm_hw_params_test_channels        = (ma_proc)_snd_pcm_hw_params_test_channels;
    pContext->alsa.snd_pcm_hw_params_test_rate            = (ma_proc)_snd_pcm_hw_params_test_rate;
    pContext->alsa.snd_pcm_hw_params                      = (ma_proc)_snd_pcm_hw_params;
    pContext->alsa.snd_pcm_sw_params_sizeof               = (ma_proc)_snd_pcm_sw_params_sizeof;
    pContext->alsa.snd_pcm_sw_params_current              = (ma_proc)_snd_pcm_sw_params_current;
    pContext->alsa.snd_pcm_sw_params_get_boundary         = (ma_proc)_snd_pcm_sw_params_get_boundary;
    pContext->alsa.snd_pcm_sw_params_set_avail_min        = (ma_proc)_snd_pcm_sw_params_set_avail_min;
    pContext->alsa.snd_pcm_sw_params_set_start_threshold  = (ma_proc)_snd_pcm_sw_params_set_start_threshold;
    pContext->alsa.snd_pcm_sw_params_set_stop_threshold   = (ma_proc)_snd_pcm_sw_params_set_stop_threshold;
    pContext->alsa.snd_pcm_sw_params                      = (ma_proc)_snd_pcm_sw_params;
    pContext->alsa.snd_pcm_format_mask_sizeof             = (ma_proc)_snd_pcm_format_mask_sizeof;
    pContext->alsa.snd_pcm_format_mask_test               = (ma_proc)_snd_pcm_format_mask_test;
    pContext->alsa.snd_pcm_get_chmap                      = (ma_proc)_snd_pcm_get_chmap;
    pContext->alsa.snd_pcm_state                          = (ma_proc)_snd_pcm_state;
    pContext->alsa.snd_pcm_prepare                        = (ma_proc)_snd_pcm_prepare;
    pContext->alsa.snd_pcm_start                          = (ma_proc)_snd_pcm_start;
    pContext->alsa.snd_pcm_drop                           = (ma_proc)_snd_pcm_drop;
    pContext->alsa.snd_pcm_drain                          = (ma_proc)_snd_pcm_drain;
    pContext->alsa.snd_pcm_reset                          = (ma_proc)_snd_pcm_reset;
    pContext->alsa.snd_device_name_hint                   = (ma_proc)_snd_device_name_hint;
    pContext->alsa.snd_device_name_get_hint               = (ma_proc)_snd_device_name_get_hint;
    pContext->alsa.snd_card_get_index                     = (ma_proc)_snd_card_get_index;
    pContext->alsa.snd_device_name_free_hint              = (ma_proc)_snd_device_name_free_hint;
    pContext->alsa.snd_pcm_mmap_begin                     = (ma_proc)_snd_pcm_mmap_begin;
    pContext->alsa.snd_pcm_mmap_commit                    = (ma_proc)_snd_pcm_mmap_commit;
    pContext->alsa.snd_pcm_recover                        = (ma_proc)_snd_pcm_recover;
    pContext->alsa.snd_pcm_readi                          = (ma_proc)_snd_pcm_readi;
    pContext->alsa.snd_pcm_writei                         = (ma_proc)_snd_pcm_writei;
    pContext->alsa.snd_pcm_avail                          = (ma_proc)_snd_pcm_avail;
    pContext->alsa.snd_pcm_avail_update                   = (ma_proc)_snd_pcm_avail_update;
    pContext->alsa.snd_pcm_wait                           = (ma_proc)_snd_pcm_wait;
    pContext->alsa.snd_pcm_nonblock                       = (ma_proc)_snd_pcm_nonblock;
    pContext->alsa.snd_pcm_info                           = (ma_proc)_snd_pcm_info;
    pContext->alsa.snd_pcm_info_sizeof                    = (ma_proc)_snd_pcm_info_sizeof;
    pContext->alsa.snd_pcm_info_get_name                  = (ma_proc)_snd_pcm_info_get_name;
    pContext->alsa.snd_pcm_poll_descriptors               = (ma_proc)_snd_pcm_poll_descriptors;
    pContext->alsa.snd_pcm_poll_descriptors_count         = (ma_proc)_snd_pcm_poll_descriptors_count;
    pContext->alsa.snd_pcm_poll_descriptors_revents       = (ma_proc)_snd_pcm_poll_descriptors_revents;
    pContext->alsa.snd_config_update_free_global          = (ma_proc)_snd_config_update_free_global;
#endif

    pContext->alsa.useVerboseDeviceEnumeration = pConfig->alsa.useVerboseDeviceEnumeration;

    result = ma_mutex_init(&pContext->alsa.internalDeviceEnumLock);
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[ALSA] WARNING: Failed to initialize mutex for internal device enumeration.");
        return result;
    }

    pCallbacks->onContextInit             = ma_context_init__alsa;
    pCallbacks->onContextUninit           = ma_context_uninit__alsa;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__alsa;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__alsa;
    pCallbacks->onDeviceInit              = ma_device_init__alsa;
    pCallbacks->onDeviceUninit            = ma_device_uninit__alsa;
    pCallbacks->onDeviceStart             = ma_device_start__alsa;
    pCallbacks->onDeviceStop              = ma_device_stop__alsa;
    pCallbacks->onDeviceRead              = ma_device_read__alsa;
    pCallbacks->onDeviceWrite             = ma_device_write__alsa;
    pCallbacks->onDeviceDataLoop          = NULL;
    pCallbacks->onDeviceDataLoopWakeup    = ma_device_data_loop_wakeup__alsa;

    return MA_SUCCESS;
}
#endif  /* MA_HAS_ALSA */



/******************************************************************************

PulseAudio Backend

******************************************************************************/
#ifdef MA_HAS_PULSEAUDIO
/*
The PulseAudio API, along with Apple's Core Audio, is the worst of the mainstream audio APIs. This is a brief description of what's going on
in the PulseAudio backend. I apologize if this gets a bit ranty for your liking - you might want to skip this discussion.

PulseAudio has something they call the "Simple API", which unfortunately isn't suitable for miniaudio. I've not seen anywhere where it
allows you to enumerate over devices, nor does it seem to support the ability to stop and start streams. Looking at the documentation, it
appears as though the stream is constantly running and you prevent sound from being emitted or captured by simply not calling the read or
write functions. This is not a professional solution as it would be much better to *actually* stop the underlying stream. Perhaps the
simple API has some smarts to do this automatically, but I'm not sure. Another limitation with the simple API is that it seems inefficient
when you want to have multiple streams to a single context. For these reasons, miniaudio is not using the simple API.

Since we're not using the simple API, we're left with the asynchronous API as our only other option. And boy, is this where it starts to
get fun, and I don't mean that in a good way...

The problems start with the very name of the API - "asynchronous". Yes, this is an asynchronous oriented API which means your commands
don't immediately take effect. You instead need to issue your commands, and then wait for them to complete. The waiting mechanism is
enabled through the use of a "main loop". In the asynchronous API you cannot get away from the main loop, and the main loop is where almost
all of PulseAudio's problems stem from.

When you first initialize PulseAudio you need an object referred to as "main loop". You can implement this yourself by defining your own
vtable, but it's much easier to just use one of the built-in main loop implementations. There's two generic implementations called
pa_mainloop and pa_threaded_mainloop, and another implementation specific to GLib called pa_glib_mainloop. We're using pa_threaded_mainloop
because it simplifies management of the worker thread. The idea of the main loop object is pretty self explanatory - you're supposed to use
it to implement a worker thread which runs in a loop. The main loop is where operations are actually executed.

To initialize the main loop, you just use `pa_threaded_mainloop_new()`. This is the first function you'll call. You can then get a pointer
to the vtable with `pa_threaded_mainloop_get_api()` (the main loop vtable is called `pa_mainloop_api`). Again, you can bypass the threaded
main loop object entirely and just implement `pa_mainloop_api` directly, but there's no need for it unless you're doing something extremely
specialized such as if you want to integrate it into your application's existing main loop infrastructure.

(EDIT 2021-01-26: miniaudio is no longer using `pa_threaded_mainloop` due to this issue: https://github.com/mackron/miniaudio/issues/262.
It is now using `pa_mainloop` which turns out to be a simpler solution anyway. The rest of this rant still applies, however.)

Once you have your main loop vtable (the `pa_mainloop_api` object) you can create the PulseAudio context. This is very similar to
miniaudio's context and they map to each other quite well. You have one context to many streams, which is basically the same as miniaudio's
one `ma_context` to many `ma_device`s. Here's where it starts to get annoying, however. When you first create the PulseAudio context, which
is done with `pa_context_new()`, it's not actually connected to anything. When you connect, you call `pa_context_connect()`. However, if
you remember, PulseAudio is an asynchronous API. That means you cannot just assume the context is connected after `pa_context_context()`
has returned. You instead need to wait for it to connect. To do this, you need to either wait for a callback to get fired, which you can
set with `pa_context_set_state_callback()`, or you can continuously poll the context's state. Either way, you need to run this in a loop.
All objects from here out are created from the context, and, I believe, you can't be creating these objects until the context is connected.
This waiting loop is therefore unavoidable. In order for the waiting to ever complete, however, the main loop needs to be running. Before
attempting to connect the context, the main loop needs to be started with `pa_threaded_mainloop_start()`.

The reason for this asynchronous design is to support cases where you're connecting to a remote server, say through a local network or an
internet connection. However, the *VAST* majority of cases don't involve this at all - they just connect to a local "server" running on the
host machine. The fact that this would be the default rather than making `pa_context_connect()` synchronous tends to boggle the mind.

Once the context has been created and connected you can start creating a stream. A PulseAudio stream is analogous to miniaudio's device.
The initialization of a stream is fairly standard - you configure some attributes (analogous to miniaudio's device config) and then call
`pa_stream_new()` to actually create it. Here is where we start to get into "operations". When configuring the stream, you can get
information about the source (such as sample format, sample rate, etc.), however it's not synchronous. Instead, a `pa_operation` object
is returned from `pa_context_get_source_info_by_name()` (capture) or `pa_context_get_sink_info_by_name()` (playback). Then, you need to
run a loop (again!) to wait for the operation to complete which you can determine via a callback or polling, just like we did with the
context. Then, as an added bonus, you need to decrement the reference counter of the `pa_operation` object to ensure memory is cleaned up.
All of that just to retrieve basic information about a device!

Once the basic information about the device has been retrieved, miniaudio can now create the stream with `ma_stream_new()`. Like the
context, this needs to be connected. But we need to be careful here, because we're now about to introduce one of the most horrific design
choices in PulseAudio.

PulseAudio allows you to specify a callback that is fired when data can be written to or read from a stream. The language is important here
because PulseAudio takes it literally, specifically the "can be". You would think these callbacks would be appropriate as the place for
writing and reading data to and from the stream, and that would be right, except when it's not. When you initialize the stream, you can
set a flag that tells PulseAudio to not start the stream automatically. This is required because miniaudio does not auto-start devices
straight after initialization - you need to call `ma_device_start()` manually. The problem is that even when this flag is specified,
PulseAudio will immediately fire its write or read callback. This is *technically* correct (based on the wording in the documentation)
because indeed, data *can* be written at this point. The problem is that it's not *practical*. It makes sense that the write/read callback
would be where a program will want to write or read data to or from the stream, but when it's called before the application has even
requested that the stream be started, it's just not practical because the program probably isn't ready for any kind of data delivery at
that point (it may still need to load files or whatnot). Instead, this callback should only be fired when the application requests the
stream be started which is how it works with literally *every* other callback-based audio API. Since miniaudio forbids firing of the data
callback until the device has been started (as it should be with *all* callback based APIs), logic needs to be added to ensure miniaudio
doesn't just blindly fire the application-defined data callback from within the PulseAudio callback before the stream has actually been
started. The device state is used for this - if the state is anything other than `ma_device_state_starting` or `ma_device_state_started`, the main data
callback is not fired.

This, unfortunately, is not the end of the problems with the PulseAudio write callback. Any normal callback based audio API will
continuously fire the callback at regular intervals based on the size of the internal buffer. This will only ever be fired when the device
is running, and will be fired regardless of whether or not the user actually wrote anything to the device/stream. This not the case in
PulseAudio. In PulseAudio, the data callback will *only* be called if you wrote something to it previously. That means, if you don't call
`pa_stream_write()`, the callback will not get fired. On the surface you wouldn't think this would matter because you should be always
writing data, and if you don't have anything to write, just write silence. That's fine until you want to drain the stream. You see, if
you're continuously writing data to the stream, the stream will never get drained! That means in order to drain the stream, you need to
*not* write data to it! But remember, when you don't write data to the stream, the callback won't get fired again! Why is draining
important? Because that's how we've defined stopping to work in miniaudio. In miniaudio, stopping the device requires it to be drained
before returning from ma_device_stop(). So we've stopped the device, which requires us to drain, but draining requires us to *not* write
data to the stream (or else it won't ever complete draining), but not writing to the stream means the callback won't get fired again!

This becomes a problem when stopping and then restarting the device. When the device is stopped, it's drained, which requires us to *not*
write anything to the stream. But then, since we didn't write anything to it, the write callback will *never* get called again if we just
resume the stream naively. This means that starting the stream requires us to write data to the stream from outside the callback. This
disconnect is something PulseAudio has got seriously wrong - there should only ever be a single source of data delivery, that being the
callback. (I have tried using `pa_stream_flush()` to trigger the write callback to fire, but this just doesn't work for some reason.)

Once you've created the stream, you need to connect it which involves the whole waiting procedure. This is the same process as the context,
only this time you'll poll for the state with `pa_stream_get_status()`. The starting and stopping of a streaming is referred to as
"corking" in PulseAudio. The analogy is corking a barrel. To start the stream, you uncork it, to stop it you cork it. Personally I think
it's silly - why would you not just call it "starting" and "stopping" like any other normal audio API? Anyway, the act of corking is, you
guessed it, asynchronous. This means you'll need our waiting loop as usual. Again, why this asynchronous design is the default is
absolutely beyond me. Would it really be that hard to just make it run synchronously?

Teardown is pretty simple (what?!). It's just a matter of calling the relevant `_unref()` function on each object in reverse order that
they were initialized in.

That's about it from the PulseAudio side. A bit ranty, I know, but they really need to fix that main loop and callback system. They're
embarrassingly unpractical. The main loop thing is an easy fix - have synchronous versions of all APIs. If an application wants these to
run asynchronously, they can execute them in a separate thread themselves. The desire to run these asynchronously is such a niche
requirement - it makes no sense to make it the default. The stream write callback needs to be change, or an alternative provided, that is
constantly fired, regardless of whether or not `pa_stream_write()` has been called, and it needs to take a pointer to a buffer as a
parameter which the program just writes to directly rather than having to call `pa_stream_writable_size()` and `pa_stream_write()`. These
changes alone will change PulseAudio from one of the worst audio APIs to one of the best.
*/


/*
It is assumed pulseaudio.h is available when linking at compile time. When linking at compile time, we use the declarations in the header
to check for type safety. We cannot do this when linking at run time because the header might not be available.
*/
#ifdef MA_NO_RUNTIME_LINKING

/* pulseaudio.h marks some functions with "inline" which isn't always supported. Need to emulate it. */
#if !defined(__cplusplus)
    #if defined(__STRICT_ANSI__)
        #if !defined(inline)
            #define inline __inline__ __attribute__((always_inline))
            #define MA_INLINE_DEFINED
        #endif
    #endif
#endif
#include <pulse/pulseaudio.h>
#if defined(MA_INLINE_DEFINED)
    #undef inline
    #undef MA_INLINE_DEFINED
#endif

#define MA_PA_OK                                       PA_OK
#define MA_PA_ERR_ACCESS                               PA_ERR_ACCESS
#define MA_PA_ERR_INVALID                              PA_ERR_INVALID
#define MA_PA_ERR_NOENTITY                             PA_ERR_NOENTITY
#define MA_PA_ERR_NOTSUPPORTED                         PA_ERR_NOTSUPPORTED

#define MA_PA_CHANNELS_MAX                             PA_CHANNELS_MAX
#define MA_PA_RATE_MAX                                 PA_RATE_MAX

typedef pa_context_flags_t ma_pa_context_flags_t;
#define MA_PA_CONTEXT_NOFLAGS                          PA_CONTEXT_NOFLAGS
#define MA_PA_CONTEXT_NOAUTOSPAWN                      PA_CONTEXT_NOAUTOSPAWN
#define MA_PA_CONTEXT_NOFAIL                           PA_CONTEXT_NOFAIL

typedef pa_stream_flags_t ma_pa_stream_flags_t;
#define MA_PA_STREAM_NOFLAGS                           PA_STREAM_NOFLAGS
#define MA_PA_STREAM_START_CORKED                      PA_STREAM_START_CORKED
#define MA_PA_STREAM_INTERPOLATE_TIMING                PA_STREAM_INTERPOLATE_TIMING
#define MA_PA_STREAM_NOT_MONOTONIC                     PA_STREAM_NOT_MONOTONIC
#define MA_PA_STREAM_AUTO_TIMING_UPDATE                PA_STREAM_AUTO_TIMING_UPDATE
#define MA_PA_STREAM_NO_REMAP_CHANNELS                 PA_STREAM_NO_REMAP_CHANNELS
#define MA_PA_STREAM_NO_REMIX_CHANNELS                 PA_STREAM_NO_REMIX_CHANNELS
#define MA_PA_STREAM_FIX_FORMAT                        PA_STREAM_FIX_FORMAT
#define MA_PA_STREAM_FIX_RATE                          PA_STREAM_FIX_RATE
#define MA_PA_STREAM_FIX_CHANNELS                      PA_STREAM_FIX_CHANNELS
#define MA_PA_STREAM_DONT_MOVE                         PA_STREAM_DONT_MOVE
#define MA_PA_STREAM_VARIABLE_RATE                     PA_STREAM_VARIABLE_RATE
#define MA_PA_STREAM_PEAK_DETECT                       PA_STREAM_PEAK_DETECT
#define MA_PA_STREAM_START_MUTED                       PA_STREAM_START_MUTED
#define MA_PA_STREAM_ADJUST_LATENCY                    PA_STREAM_ADJUST_LATENCY
#define MA_PA_STREAM_EARLY_REQUESTS                    PA_STREAM_EARLY_REQUESTS
#define MA_PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND         PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND
#define MA_PA_STREAM_START_UNMUTED                     PA_STREAM_START_UNMUTED
#define MA_PA_STREAM_FAIL_ON_SUSPEND                   PA_STREAM_FAIL_ON_SUSPEND
#define MA_PA_STREAM_RELATIVE_VOLUME                   PA_STREAM_RELATIVE_VOLUME
#define MA_PA_STREAM_PASSTHROUGH                       PA_STREAM_PASSTHROUGH

typedef pa_sink_flags_t ma_pa_sink_flags_t;
#define MA_PA_SINK_NOFLAGS                             PA_SINK_NOFLAGS
#define MA_PA_SINK_HW_VOLUME_CTRL                      PA_SINK_HW_VOLUME_CTRL
#define MA_PA_SINK_LATENCY                             PA_SINK_LATENCY
#define MA_PA_SINK_HARDWARE                            PA_SINK_HARDWARE
#define MA_PA_SINK_NETWORK                             PA_SINK_NETWORK
#define MA_PA_SINK_HW_MUTE_CTRL                        PA_SINK_HW_MUTE_CTRL
#define MA_PA_SINK_DECIBEL_VOLUME                      PA_SINK_DECIBEL_VOLUME
#define MA_PA_SINK_FLAT_VOLUME                         PA_SINK_FLAT_VOLUME
#define MA_PA_SINK_DYNAMIC_LATENCY                     PA_SINK_DYNAMIC_LATENCY
#define MA_PA_SINK_SET_FORMATS                         PA_SINK_SET_FORMATS

typedef pa_source_flags_t ma_pa_source_flags_t;
#define MA_PA_SOURCE_NOFLAGS                           PA_SOURCE_NOFLAGS
#define MA_PA_SOURCE_HW_VOLUME_CTRL                    PA_SOURCE_HW_VOLUME_CTRL
#define MA_PA_SOURCE_LATENCY                           PA_SOURCE_LATENCY
#define MA_PA_SOURCE_HARDWARE                          PA_SOURCE_HARDWARE
#define MA_PA_SOURCE_NETWORK                           PA_SOURCE_NETWORK
#define MA_PA_SOURCE_HW_MUTE_CTRL                      PA_SOURCE_HW_MUTE_CTRL
#define MA_PA_SOURCE_DECIBEL_VOLUME                    PA_SOURCE_DECIBEL_VOLUME
#define MA_PA_SOURCE_DYNAMIC_LATENCY                   PA_SOURCE_DYNAMIC_LATENCY
#define MA_PA_SOURCE_FLAT_VOLUME                       PA_SOURCE_FLAT_VOLUME

typedef pa_context_state_t ma_pa_context_state_t;
#define MA_PA_CONTEXT_UNCONNECTED                      PA_CONTEXT_UNCONNECTED
#define MA_PA_CONTEXT_CONNECTING                       PA_CONTEXT_CONNECTING
#define MA_PA_CONTEXT_AUTHORIZING                      PA_CONTEXT_AUTHORIZING
#define MA_PA_CONTEXT_SETTING_NAME                     PA_CONTEXT_SETTING_NAME
#define MA_PA_CONTEXT_READY                            PA_CONTEXT_READY
#define MA_PA_CONTEXT_FAILED                           PA_CONTEXT_FAILED
#define MA_PA_CONTEXT_TERMINATED                       PA_CONTEXT_TERMINATED

typedef pa_stream_state_t ma_pa_stream_state_t;
#define MA_PA_STREAM_UNCONNECTED                       PA_STREAM_UNCONNECTED
#define MA_PA_STREAM_CREATING                          PA_STREAM_CREATING
#define MA_PA_STREAM_READY                             PA_STREAM_READY
#define MA_PA_STREAM_FAILED                            PA_STREAM_FAILED
#define MA_PA_STREAM_TERMINATED                        PA_STREAM_TERMINATED

typedef pa_operation_state_t ma_pa_operation_state_t;
#define MA_PA_OPERATION_RUNNING                        PA_OPERATION_RUNNING
#define MA_PA_OPERATION_DONE                           PA_OPERATION_DONE
#define MA_PA_OPERATION_CANCELLED                      PA_OPERATION_CANCELLED

typedef pa_sink_state_t ma_pa_sink_state_t;
#define MA_PA_SINK_INVALID_STATE                       PA_SINK_INVALID_STATE
#define MA_PA_SINK_RUNNING                             PA_SINK_RUNNING
#define MA_PA_SINK_IDLE                                PA_SINK_IDLE
#define MA_PA_SINK_SUSPENDED                           PA_SINK_SUSPENDED

typedef pa_source_state_t ma_pa_source_state_t;
#define MA_PA_SOURCE_INVALID_STATE                     PA_SOURCE_INVALID_STATE
#define MA_PA_SOURCE_RUNNING                           PA_SOURCE_RUNNING
#define MA_PA_SOURCE_IDLE                              PA_SOURCE_IDLE
#define MA_PA_SOURCE_SUSPENDED                         PA_SOURCE_SUSPENDED

typedef pa_seek_mode_t ma_pa_seek_mode_t;
#define MA_PA_SEEK_RELATIVE                            PA_SEEK_RELATIVE
#define MA_PA_SEEK_ABSOLUTE                            PA_SEEK_ABSOLUTE
#define MA_PA_SEEK_RELATIVE_ON_READ                    PA_SEEK_RELATIVE_ON_READ
#define MA_PA_SEEK_RELATIVE_END                        PA_SEEK_RELATIVE_END

typedef pa_channel_position_t ma_pa_channel_position_t;
#define MA_PA_CHANNEL_POSITION_INVALID                 PA_CHANNEL_POSITION_INVALID
#define MA_PA_CHANNEL_POSITION_MONO                    PA_CHANNEL_POSITION_MONO
#define MA_PA_CHANNEL_POSITION_FRONT_LEFT              PA_CHANNEL_POSITION_FRONT_LEFT
#define MA_PA_CHANNEL_POSITION_FRONT_RIGHT             PA_CHANNEL_POSITION_FRONT_RIGHT
#define MA_PA_CHANNEL_POSITION_FRONT_CENTER            PA_CHANNEL_POSITION_FRONT_CENTER
#define MA_PA_CHANNEL_POSITION_REAR_CENTER             PA_CHANNEL_POSITION_REAR_CENTER
#define MA_PA_CHANNEL_POSITION_REAR_LEFT               PA_CHANNEL_POSITION_REAR_LEFT
#define MA_PA_CHANNEL_POSITION_REAR_RIGHT              PA_CHANNEL_POSITION_REAR_RIGHT
#define MA_PA_CHANNEL_POSITION_LFE                     PA_CHANNEL_POSITION_LFE
#define MA_PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER    PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
#define MA_PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER   PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER
#define MA_PA_CHANNEL_POSITION_SIDE_LEFT               PA_CHANNEL_POSITION_SIDE_LEFT
#define MA_PA_CHANNEL_POSITION_SIDE_RIGHT              PA_CHANNEL_POSITION_SIDE_RIGHT
#define MA_PA_CHANNEL_POSITION_AUX0                    PA_CHANNEL_POSITION_AUX0
#define MA_PA_CHANNEL_POSITION_AUX1                    PA_CHANNEL_POSITION_AUX1
#define MA_PA_CHANNEL_POSITION_AUX2                    PA_CHANNEL_POSITION_AUX2
#define MA_PA_CHANNEL_POSITION_AUX3                    PA_CHANNEL_POSITION_AUX3
#define MA_PA_CHANNEL_POSITION_AUX4                    PA_CHANNEL_POSITION_AUX4
#define MA_PA_CHANNEL_POSITION_AUX5                    PA_CHANNEL_POSITION_AUX5
#define MA_PA_CHANNEL_POSITION_AUX6                    PA_CHANNEL_POSITION_AUX6
#define MA_PA_CHANNEL_POSITION_AUX7                    PA_CHANNEL_POSITION_AUX7
#define MA_PA_CHANNEL_POSITION_AUX8                    PA_CHANNEL_POSITION_AUX8
#define MA_PA_CHANNEL_POSITION_AUX9                    PA_CHANNEL_POSITION_AUX9
#define MA_PA_CHANNEL_POSITION_AUX10                   PA_CHANNEL_POSITION_AUX10
#define MA_PA_CHANNEL_POSITION_AUX11                   PA_CHANNEL_POSITION_AUX11
#define MA_PA_CHANNEL_POSITION_AUX12                   PA_CHANNEL_POSITION_AUX12
#define MA_PA_CHANNEL_POSITION_AUX13                   PA_CHANNEL_POSITION_AUX13
#define MA_PA_CHANNEL_POSITION_AUX14                   PA_CHANNEL_POSITION_AUX14
#define MA_PA_CHANNEL_POSITION_AUX15                   PA_CHANNEL_POSITION_AUX15
#define MA_PA_CHANNEL_POSITION_AUX16                   PA_CHANNEL_POSITION_AUX16
#define MA_PA_CHANNEL_POSITION_AUX17                   PA_CHANNEL_POSITION_AUX17
#define MA_PA_CHANNEL_POSITION_AUX18                   PA_CHANNEL_POSITION_AUX18
#define MA_PA_CHANNEL_POSITION_AUX19                   PA_CHANNEL_POSITION_AUX19
#define MA_PA_CHANNEL_POSITION_AUX20                   PA_CHANNEL_POSITION_AUX20
#define MA_PA_CHANNEL_POSITION_AUX21                   PA_CHANNEL_POSITION_AUX21
#define MA_PA_CHANNEL_POSITION_AUX22                   PA_CHANNEL_POSITION_AUX22
#define MA_PA_CHANNEL_POSITION_AUX23                   PA_CHANNEL_POSITION_AUX23
#define MA_PA_CHANNEL_POSITION_AUX24                   PA_CHANNEL_POSITION_AUX24
#define MA_PA_CHANNEL_POSITION_AUX25                   PA_CHANNEL_POSITION_AUX25
#define MA_PA_CHANNEL_POSITION_AUX26                   PA_CHANNEL_POSITION_AUX26
#define MA_PA_CHANNEL_POSITION_AUX27                   PA_CHANNEL_POSITION_AUX27
#define MA_PA_CHANNEL_POSITION_AUX28                   PA_CHANNEL_POSITION_AUX28
#define MA_PA_CHANNEL_POSITION_AUX29                   PA_CHANNEL_POSITION_AUX29
#define MA_PA_CHANNEL_POSITION_AUX30                   PA_CHANNEL_POSITION_AUX30
#define MA_PA_CHANNEL_POSITION_AUX31                   PA_CHANNEL_POSITION_AUX31
#define MA_PA_CHANNEL_POSITION_TOP_CENTER              PA_CHANNEL_POSITION_TOP_CENTER
#define MA_PA_CHANNEL_POSITION_TOP_FRONT_LEFT          PA_CHANNEL_POSITION_TOP_FRONT_LEFT
#define MA_PA_CHANNEL_POSITION_TOP_FRONT_RIGHT         PA_CHANNEL_POSITION_TOP_FRONT_RIGHT
#define MA_PA_CHANNEL_POSITION_TOP_FRONT_CENTER        PA_CHANNEL_POSITION_TOP_FRONT_CENTER
#define MA_PA_CHANNEL_POSITION_TOP_REAR_LEFT           PA_CHANNEL_POSITION_TOP_REAR_LEFT
#define MA_PA_CHANNEL_POSITION_TOP_REAR_RIGHT          PA_CHANNEL_POSITION_TOP_REAR_RIGHT
#define MA_PA_CHANNEL_POSITION_TOP_REAR_CENTER         PA_CHANNEL_POSITION_TOP_REAR_CENTER
#define MA_PA_CHANNEL_POSITION_LEFT                    PA_CHANNEL_POSITION_LEFT
#define MA_PA_CHANNEL_POSITION_RIGHT                   PA_CHANNEL_POSITION_RIGHT
#define MA_PA_CHANNEL_POSITION_CENTER                  PA_CHANNEL_POSITION_CENTER
#define MA_PA_CHANNEL_POSITION_SUBWOOFER               PA_CHANNEL_POSITION_SUBWOOFER

typedef pa_channel_map_def_t ma_pa_channel_map_def_t;
#define MA_PA_CHANNEL_MAP_AIFF                         PA_CHANNEL_MAP_AIFF
#define MA_PA_CHANNEL_MAP_ALSA                         PA_CHANNEL_MAP_ALSA
#define MA_PA_CHANNEL_MAP_AUX                          PA_CHANNEL_MAP_AUX
#define MA_PA_CHANNEL_MAP_WAVEEX                       PA_CHANNEL_MAP_WAVEEX
#define MA_PA_CHANNEL_MAP_OSS                          PA_CHANNEL_MAP_OSS
#define MA_PA_CHANNEL_MAP_DEFAULT                      PA_CHANNEL_MAP_DEFAULT

typedef pa_sample_format_t ma_pa_sample_format_t;
#define MA_PA_SAMPLE_INVALID                           PA_SAMPLE_INVALID
#define MA_PA_SAMPLE_U8                                PA_SAMPLE_U8
#define MA_PA_SAMPLE_ALAW                              PA_SAMPLE_ALAW
#define MA_PA_SAMPLE_ULAW                              PA_SAMPLE_ULAW
#define MA_PA_SAMPLE_S16LE                             PA_SAMPLE_S16LE
#define MA_PA_SAMPLE_S16BE                             PA_SAMPLE_S16BE
#define MA_PA_SAMPLE_FLOAT32LE                         PA_SAMPLE_FLOAT32LE
#define MA_PA_SAMPLE_FLOAT32BE                         PA_SAMPLE_FLOAT32BE
#define MA_PA_SAMPLE_S32LE                             PA_SAMPLE_S32LE
#define MA_PA_SAMPLE_S32BE                             PA_SAMPLE_S32BE
#define MA_PA_SAMPLE_S24LE                             PA_SAMPLE_S24LE
#define MA_PA_SAMPLE_S24BE                             PA_SAMPLE_S24BE
#define MA_PA_SAMPLE_S24_32LE                          PA_SAMPLE_S24_32LE
#define MA_PA_SAMPLE_S24_32BE                          PA_SAMPLE_S24_32BE

typedef pa_mainloop             ma_pa_mainloop;
typedef pa_threaded_mainloop    ma_pa_threaded_mainloop;
typedef pa_mainloop_api         ma_pa_mainloop_api;
typedef pa_context              ma_pa_context;
typedef pa_operation            ma_pa_operation;
typedef pa_stream               ma_pa_stream;
typedef pa_spawn_api            ma_pa_spawn_api;
typedef pa_buffer_attr          ma_pa_buffer_attr;
typedef pa_channel_map          ma_pa_channel_map;
typedef pa_cvolume              ma_pa_cvolume;
typedef pa_sample_spec          ma_pa_sample_spec;
typedef pa_sink_info            ma_pa_sink_info;
typedef pa_source_info          ma_pa_source_info;

typedef pa_context_notify_cb_t  ma_pa_context_notify_cb_t;
typedef pa_sink_info_cb_t       ma_pa_sink_info_cb_t;
typedef pa_source_info_cb_t     ma_pa_source_info_cb_t;
typedef pa_stream_success_cb_t  ma_pa_stream_success_cb_t;
typedef pa_stream_request_cb_t  ma_pa_stream_request_cb_t;
typedef pa_stream_notify_cb_t   ma_pa_stream_notify_cb_t;
typedef pa_free_cb_t            ma_pa_free_cb_t;
#else
#define MA_PA_OK                                       0
#define MA_PA_ERR_ACCESS                               1
#define MA_PA_ERR_INVALID                              2
#define MA_PA_ERR_NOENTITY                             5
#define MA_PA_ERR_NOTSUPPORTED                         19

#define MA_PA_CHANNELS_MAX                             32
#define MA_PA_RATE_MAX                                 384000

typedef int ma_pa_context_flags_t;
#define MA_PA_CONTEXT_NOFLAGS                          0x00000000
#define MA_PA_CONTEXT_NOAUTOSPAWN                      0x00000001
#define MA_PA_CONTEXT_NOFAIL                           0x00000002

typedef int ma_pa_stream_flags_t;
#define MA_PA_STREAM_NOFLAGS                           0x00000000
#define MA_PA_STREAM_START_CORKED                      0x00000001
#define MA_PA_STREAM_INTERPOLATE_TIMING                0x00000002
#define MA_PA_STREAM_NOT_MONOTONIC                     0x00000004
#define MA_PA_STREAM_AUTO_TIMING_UPDATE                0x00000008
#define MA_PA_STREAM_NO_REMAP_CHANNELS                 0x00000010
#define MA_PA_STREAM_NO_REMIX_CHANNELS                 0x00000020
#define MA_PA_STREAM_FIX_FORMAT                        0x00000040
#define MA_PA_STREAM_FIX_RATE                          0x00000080
#define MA_PA_STREAM_FIX_CHANNELS                      0x00000100
#define MA_PA_STREAM_DONT_MOVE                         0x00000200
#define MA_PA_STREAM_VARIABLE_RATE                     0x00000400
#define MA_PA_STREAM_PEAK_DETECT                       0x00000800
#define MA_PA_STREAM_START_MUTED                       0x00001000
#define MA_PA_STREAM_ADJUST_LATENCY                    0x00002000
#define MA_PA_STREAM_EARLY_REQUESTS                    0x00004000
#define MA_PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND         0x00008000
#define MA_PA_STREAM_START_UNMUTED                     0x00010000
#define MA_PA_STREAM_FAIL_ON_SUSPEND                   0x00020000
#define MA_PA_STREAM_RELATIVE_VOLUME                   0x00040000
#define MA_PA_STREAM_PASSTHROUGH                       0x00080000

typedef int ma_pa_sink_flags_t;
#define MA_PA_SINK_NOFLAGS                             0x00000000
#define MA_PA_SINK_HW_VOLUME_CTRL                      0x00000001
#define MA_PA_SINK_LATENCY                             0x00000002
#define MA_PA_SINK_HARDWARE                            0x00000004
#define MA_PA_SINK_NETWORK                             0x00000008
#define MA_PA_SINK_HW_MUTE_CTRL                        0x00000010
#define MA_PA_SINK_DECIBEL_VOLUME                      0x00000020
#define MA_PA_SINK_FLAT_VOLUME                         0x00000040
#define MA_PA_SINK_DYNAMIC_LATENCY                     0x00000080
#define MA_PA_SINK_SET_FORMATS                         0x00000100

typedef int ma_pa_source_flags_t;
#define MA_PA_SOURCE_NOFLAGS                           0x00000000
#define MA_PA_SOURCE_HW_VOLUME_CTRL                    0x00000001
#define MA_PA_SOURCE_LATENCY                           0x00000002
#define MA_PA_SOURCE_HARDWARE                          0x00000004
#define MA_PA_SOURCE_NETWORK                           0x00000008
#define MA_PA_SOURCE_HW_MUTE_CTRL                      0x00000010
#define MA_PA_SOURCE_DECIBEL_VOLUME                    0x00000020
#define MA_PA_SOURCE_DYNAMIC_LATENCY                   0x00000040
#define MA_PA_SOURCE_FLAT_VOLUME                       0x00000080

typedef int ma_pa_context_state_t;
#define MA_PA_CONTEXT_UNCONNECTED                      0
#define MA_PA_CONTEXT_CONNECTING                       1
#define MA_PA_CONTEXT_AUTHORIZING                      2
#define MA_PA_CONTEXT_SETTING_NAME                     3
#define MA_PA_CONTEXT_READY                            4
#define MA_PA_CONTEXT_FAILED                           5
#define MA_PA_CONTEXT_TERMINATED                       6

typedef int ma_pa_stream_state_t;
#define MA_PA_STREAM_UNCONNECTED                       0
#define MA_PA_STREAM_CREATING                          1
#define MA_PA_STREAM_READY                             2
#define MA_PA_STREAM_FAILED                            3
#define MA_PA_STREAM_TERMINATED                        4

typedef int ma_pa_operation_state_t;
#define MA_PA_OPERATION_RUNNING                        0
#define MA_PA_OPERATION_DONE                           1
#define MA_PA_OPERATION_CANCELLED                      2

typedef int ma_pa_sink_state_t;
#define MA_PA_SINK_INVALID_STATE                       -1
#define MA_PA_SINK_RUNNING                             0
#define MA_PA_SINK_IDLE                                1
#define MA_PA_SINK_SUSPENDED                           2

typedef int ma_pa_source_state_t;
#define MA_PA_SOURCE_INVALID_STATE                     -1
#define MA_PA_SOURCE_RUNNING                           0
#define MA_PA_SOURCE_IDLE                              1
#define MA_PA_SOURCE_SUSPENDED                         2

typedef int ma_pa_seek_mode_t;
#define MA_PA_SEEK_RELATIVE                            0
#define MA_PA_SEEK_ABSOLUTE                            1
#define MA_PA_SEEK_RELATIVE_ON_READ                    2
#define MA_PA_SEEK_RELATIVE_END                        3

typedef int ma_pa_channel_position_t;
#define MA_PA_CHANNEL_POSITION_INVALID                 -1
#define MA_PA_CHANNEL_POSITION_MONO                    0
#define MA_PA_CHANNEL_POSITION_FRONT_LEFT              1
#define MA_PA_CHANNEL_POSITION_FRONT_RIGHT             2
#define MA_PA_CHANNEL_POSITION_FRONT_CENTER            3
#define MA_PA_CHANNEL_POSITION_REAR_CENTER             4
#define MA_PA_CHANNEL_POSITION_REAR_LEFT               5
#define MA_PA_CHANNEL_POSITION_REAR_RIGHT              6
#define MA_PA_CHANNEL_POSITION_LFE                     7
#define MA_PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER    8
#define MA_PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER   9
#define MA_PA_CHANNEL_POSITION_SIDE_LEFT               10
#define MA_PA_CHANNEL_POSITION_SIDE_RIGHT              11
#define MA_PA_CHANNEL_POSITION_AUX0                    12
#define MA_PA_CHANNEL_POSITION_AUX1                    13
#define MA_PA_CHANNEL_POSITION_AUX2                    14
#define MA_PA_CHANNEL_POSITION_AUX3                    15
#define MA_PA_CHANNEL_POSITION_AUX4                    16
#define MA_PA_CHANNEL_POSITION_AUX5                    17
#define MA_PA_CHANNEL_POSITION_AUX6                    18
#define MA_PA_CHANNEL_POSITION_AUX7                    19
#define MA_PA_CHANNEL_POSITION_AUX8                    20
#define MA_PA_CHANNEL_POSITION_AUX9                    21
#define MA_PA_CHANNEL_POSITION_AUX10                   22
#define MA_PA_CHANNEL_POSITION_AUX11                   23
#define MA_PA_CHANNEL_POSITION_AUX12                   24
#define MA_PA_CHANNEL_POSITION_AUX13                   25
#define MA_PA_CHANNEL_POSITION_AUX14                   26
#define MA_PA_CHANNEL_POSITION_AUX15                   27
#define MA_PA_CHANNEL_POSITION_AUX16                   28
#define MA_PA_CHANNEL_POSITION_AUX17                   29
#define MA_PA_CHANNEL_POSITION_AUX18                   30
#define MA_PA_CHANNEL_POSITION_AUX19                   31
#define MA_PA_CHANNEL_POSITION_AUX20                   32
#define MA_PA_CHANNEL_POSITION_AUX21                   33
#define MA_PA_CHANNEL_POSITION_AUX22                   34
#define MA_PA_CHANNEL_POSITION_AUX23                   35
#define MA_PA_CHANNEL_POSITION_AUX24                   36
#define MA_PA_CHANNEL_POSITION_AUX25                   37
#define MA_PA_CHANNEL_POSITION_AUX26                   38
#define MA_PA_CHANNEL_POSITION_AUX27                   39
#define MA_PA_CHANNEL_POSITION_AUX28                   40
#define MA_PA_CHANNEL_POSITION_AUX29                   41
#define MA_PA_CHANNEL_POSITION_AUX30                   42
#define MA_PA_CHANNEL_POSITION_AUX31                   43
#define MA_PA_CHANNEL_POSITION_TOP_CENTER              44
#define MA_PA_CHANNEL_POSITION_TOP_FRONT_LEFT          45
#define MA_PA_CHANNEL_POSITION_TOP_FRONT_RIGHT         46
#define MA_PA_CHANNEL_POSITION_TOP_FRONT_CENTER        47
#define MA_PA_CHANNEL_POSITION_TOP_REAR_LEFT           48
#define MA_PA_CHANNEL_POSITION_TOP_REAR_RIGHT          49
#define MA_PA_CHANNEL_POSITION_TOP_REAR_CENTER         50
#define MA_PA_CHANNEL_POSITION_LEFT                    MA_PA_CHANNEL_POSITION_FRONT_LEFT
#define MA_PA_CHANNEL_POSITION_RIGHT                   MA_PA_CHANNEL_POSITION_FRONT_RIGHT
#define MA_PA_CHANNEL_POSITION_CENTER                  MA_PA_CHANNEL_POSITION_FRONT_CENTER
#define MA_PA_CHANNEL_POSITION_SUBWOOFER               MA_PA_CHANNEL_POSITION_LFE

typedef int ma_pa_channel_map_def_t;
#define MA_PA_CHANNEL_MAP_AIFF                         0
#define MA_PA_CHANNEL_MAP_ALSA                         1
#define MA_PA_CHANNEL_MAP_AUX                          2
#define MA_PA_CHANNEL_MAP_WAVEEX                       3
#define MA_PA_CHANNEL_MAP_OSS                          4
#define MA_PA_CHANNEL_MAP_DEFAULT                      MA_PA_CHANNEL_MAP_AIFF

typedef int ma_pa_sample_format_t;
#define MA_PA_SAMPLE_INVALID                           -1
#define MA_PA_SAMPLE_U8                                0
#define MA_PA_SAMPLE_ALAW                              1
#define MA_PA_SAMPLE_ULAW                              2
#define MA_PA_SAMPLE_S16LE                             3
#define MA_PA_SAMPLE_S16BE                             4
#define MA_PA_SAMPLE_FLOAT32LE                         5
#define MA_PA_SAMPLE_FLOAT32BE                         6
#define MA_PA_SAMPLE_S32LE                             7
#define MA_PA_SAMPLE_S32BE                             8
#define MA_PA_SAMPLE_S24LE                             9
#define MA_PA_SAMPLE_S24BE                             10
#define MA_PA_SAMPLE_S24_32LE                          11
#define MA_PA_SAMPLE_S24_32BE                          12

typedef struct ma_pa_mainloop           ma_pa_mainloop;
typedef struct ma_pa_threaded_mainloop  ma_pa_threaded_mainloop;
typedef struct ma_pa_mainloop_api       ma_pa_mainloop_api;
typedef struct ma_pa_context            ma_pa_context;
typedef struct ma_pa_operation          ma_pa_operation;
typedef struct ma_pa_stream             ma_pa_stream;
typedef struct ma_pa_spawn_api          ma_pa_spawn_api;

typedef struct
{
    ma_uint32 maxlength;
    ma_uint32 tlength;
    ma_uint32 prebuf;
    ma_uint32 minreq;
    ma_uint32 fragsize;
} ma_pa_buffer_attr;

typedef struct
{
    ma_uint8 channels;
    ma_pa_channel_position_t map[MA_PA_CHANNELS_MAX];
} ma_pa_channel_map;

typedef struct
{
    ma_uint8 channels;
    ma_uint32 values[MA_PA_CHANNELS_MAX];
} ma_pa_cvolume;

typedef struct
{
    ma_pa_sample_format_t format;
    ma_uint32 rate;
    ma_uint8 channels;
} ma_pa_sample_spec;

typedef struct
{
    const char* name;
    ma_uint32 index;
    const char* description;
    ma_pa_sample_spec sample_spec;
    ma_pa_channel_map channel_map;
    ma_uint32 owner_module;
    ma_pa_cvolume volume;
    int mute;
    ma_uint32 monitor_source;
    const char* monitor_source_name;
    ma_uint64 latency;
    const char* driver;
    ma_pa_sink_flags_t flags;
    void* proplist;
    ma_uint64 configured_latency;
    ma_uint32 base_volume;
    ma_pa_sink_state_t state;
    ma_uint32 n_volume_steps;
    ma_uint32 card;
    ma_uint32 n_ports;
    void** ports;
    void* active_port;
    ma_uint8 n_formats;
    void** formats;
} ma_pa_sink_info;

typedef struct
{
    const char *name;
    ma_uint32 index;
    const char *description;
    ma_pa_sample_spec sample_spec;
    ma_pa_channel_map channel_map;
    ma_uint32 owner_module;
    ma_pa_cvolume volume;
    int mute;
    ma_uint32 monitor_of_sink;
    const char *monitor_of_sink_name;
    ma_uint64 latency;
    const char *driver;
    ma_pa_source_flags_t flags;
    void* proplist;
    ma_uint64 configured_latency;
    ma_uint32 base_volume;
    ma_pa_source_state_t state;
    ma_uint32 n_volume_steps;
    ma_uint32 card;
    ma_uint32 n_ports;
    void** ports;
    void* active_port;
    ma_uint8 n_formats;
    void** formats;
} ma_pa_source_info;

typedef void (* ma_pa_context_notify_cb_t)(ma_pa_context* c, void* userdata);
typedef void (* ma_pa_sink_info_cb_t)     (ma_pa_context* c, const ma_pa_sink_info* i, int eol, void* userdata);
typedef void (* ma_pa_source_info_cb_t)   (ma_pa_context* c, const ma_pa_source_info* i, int eol, void* userdata);
typedef void (* ma_pa_stream_success_cb_t)(ma_pa_stream* s, int success, void* userdata);
typedef void (* ma_pa_stream_request_cb_t)(ma_pa_stream* s, size_t nbytes, void* userdata);
typedef void (* ma_pa_stream_notify_cb_t) (ma_pa_stream* s, void* userdata);
typedef void (* ma_pa_free_cb_t)          (void* p);
#endif


typedef ma_pa_mainloop*          (* ma_pa_mainloop_new_proc)                   (void);
typedef void                     (* ma_pa_mainloop_free_proc)                  (ma_pa_mainloop* m);
typedef void                     (* ma_pa_mainloop_quit_proc)                  (ma_pa_mainloop* m, int retval);
typedef ma_pa_mainloop_api*      (* ma_pa_mainloop_get_api_proc)               (ma_pa_mainloop* m);
typedef int                      (* ma_pa_mainloop_iterate_proc)               (ma_pa_mainloop* m, int block, int* retval);
typedef void                     (* ma_pa_mainloop_wakeup_proc)                (ma_pa_mainloop* m);
typedef ma_pa_threaded_mainloop* (* ma_pa_threaded_mainloop_new_proc)          (void);
typedef void                     (* ma_pa_threaded_mainloop_free_proc)         (ma_pa_threaded_mainloop* m);
typedef int                      (* ma_pa_threaded_mainloop_start_proc)        (ma_pa_threaded_mainloop* m);
typedef void                     (* ma_pa_threaded_mainloop_stop_proc)         (ma_pa_threaded_mainloop* m);
typedef void                     (* ma_pa_threaded_mainloop_lock_proc)         (ma_pa_threaded_mainloop* m);
typedef void                     (* ma_pa_threaded_mainloop_unlock_proc)       (ma_pa_threaded_mainloop* m);
typedef void                     (* ma_pa_threaded_mainloop_wait_proc)         (ma_pa_threaded_mainloop* m);
typedef void                     (* ma_pa_threaded_mainloop_signal_proc)       (ma_pa_threaded_mainloop* m, int wait_for_accept);
typedef void                     (* ma_pa_threaded_mainloop_accept_proc)       (ma_pa_threaded_mainloop* m);
typedef int                      (* ma_pa_threaded_mainloop_get_retval_proc)   (ma_pa_threaded_mainloop* m);
typedef ma_pa_mainloop_api*      (* ma_pa_threaded_mainloop_get_api_proc)      (ma_pa_threaded_mainloop* m);
typedef int                      (* ma_pa_threaded_mainloop_in_thread_proc)    (ma_pa_threaded_mainloop* m);
typedef void                     (* ma_pa_threaded_mainloop_set_name_proc)     (ma_pa_threaded_mainloop* m, const char* name);
typedef ma_pa_context*           (* ma_pa_context_new_proc)                    (ma_pa_mainloop_api* mainloop, const char* name);
typedef void                     (* ma_pa_context_unref_proc)                  (ma_pa_context* c);
typedef int                      (* ma_pa_context_connect_proc)                (ma_pa_context* c, const char* server, ma_pa_context_flags_t flags, const ma_pa_spawn_api* api);
typedef void                     (* ma_pa_context_disconnect_proc)             (ma_pa_context* c);
typedef void                     (* ma_pa_context_set_state_callback_proc)     (ma_pa_context* c, ma_pa_context_notify_cb_t cb, void* userdata);
typedef ma_pa_context_state_t    (* ma_pa_context_get_state_proc)              (ma_pa_context* c);
typedef ma_pa_operation*         (* ma_pa_context_get_sink_info_list_proc)     (ma_pa_context* c, ma_pa_sink_info_cb_t cb, void* userdata);
typedef ma_pa_operation*         (* ma_pa_context_get_source_info_list_proc)   (ma_pa_context* c, ma_pa_source_info_cb_t cb, void* userdata);
typedef ma_pa_operation*         (* ma_pa_context_get_sink_info_by_name_proc)  (ma_pa_context* c, const char* name, ma_pa_sink_info_cb_t cb, void* userdata);
typedef ma_pa_operation*         (* ma_pa_context_get_source_info_by_name_proc)(ma_pa_context* c, const char* name, ma_pa_source_info_cb_t cb, void* userdata);
typedef void                     (* ma_pa_operation_unref_proc)                (ma_pa_operation* o);
typedef ma_pa_operation_state_t  (* ma_pa_operation_get_state_proc)            (ma_pa_operation* o);
typedef ma_pa_channel_map*       (* ma_pa_channel_map_init_extend_proc)        (ma_pa_channel_map* m, unsigned channels, ma_pa_channel_map_def_t def);
typedef int                      (* ma_pa_channel_map_valid_proc)              (const ma_pa_channel_map* m);
typedef int                      (* ma_pa_channel_map_compatible_proc)         (const ma_pa_channel_map* m, const ma_pa_sample_spec* ss);
typedef ma_pa_stream*            (* ma_pa_stream_new_proc)                     (ma_pa_context* c, const char* name, const ma_pa_sample_spec* ss, const ma_pa_channel_map* map);
typedef void                     (* ma_pa_stream_unref_proc)                   (ma_pa_stream* s);
typedef int                      (* ma_pa_stream_connect_playback_proc)        (ma_pa_stream* s, const char* dev, const ma_pa_buffer_attr* attr, ma_pa_stream_flags_t flags, const ma_pa_cvolume* volume, ma_pa_stream* sync_stream);
typedef int                      (* ma_pa_stream_connect_record_proc)          (ma_pa_stream* s, const char* dev, const ma_pa_buffer_attr* attr, ma_pa_stream_flags_t flags);
typedef int                      (* ma_pa_stream_disconnect_proc)              (ma_pa_stream* s);
typedef ma_pa_stream_state_t     (* ma_pa_stream_get_state_proc)               (ma_pa_stream* s);
typedef const ma_pa_sample_spec* (* ma_pa_stream_get_sample_spec_proc)         (ma_pa_stream* s);
typedef const ma_pa_channel_map* (* ma_pa_stream_get_channel_map_proc)         (ma_pa_stream* s);
typedef const ma_pa_buffer_attr* (* ma_pa_stream_get_buffer_attr_proc)         (ma_pa_stream* s);
typedef ma_pa_operation*         (* ma_pa_stream_set_buffer_attr_proc)         (ma_pa_stream* s, const ma_pa_buffer_attr* attr, ma_pa_stream_success_cb_t cb, void* userdata);
typedef const char*              (* ma_pa_stream_get_device_name_proc)         (ma_pa_stream* s);
typedef void                     (* ma_pa_stream_set_write_callback_proc)      (ma_pa_stream* s, ma_pa_stream_request_cb_t cb, void* userdata);
typedef void                     (* ma_pa_stream_set_read_callback_proc)       (ma_pa_stream* s, ma_pa_stream_request_cb_t cb, void* userdata);
typedef void                     (* ma_pa_stream_set_suspended_callback_proc)  (ma_pa_stream* s, ma_pa_stream_notify_cb_t cb, void* userdata);
typedef void                     (* ma_pa_stream_set_moved_callback_proc)      (ma_pa_stream* s, ma_pa_stream_notify_cb_t cb, void* userdata);
typedef int                      (* ma_pa_stream_is_suspended_proc)            (const ma_pa_stream* s);
typedef ma_pa_operation*         (* ma_pa_stream_flush_proc)                   (ma_pa_stream* s, ma_pa_stream_success_cb_t cb, void* userdata);
typedef ma_pa_operation*         (* ma_pa_stream_drain_proc)                   (ma_pa_stream* s, ma_pa_stream_success_cb_t cb, void* userdata);
typedef int                      (* ma_pa_stream_is_corked_proc)               (ma_pa_stream* s);
typedef ma_pa_operation*         (* ma_pa_stream_cork_proc)                    (ma_pa_stream* s, int b, ma_pa_stream_success_cb_t cb, void* userdata);
typedef ma_pa_operation*         (* ma_pa_stream_trigger_proc)                 (ma_pa_stream* s, ma_pa_stream_success_cb_t cb, void* userdata);
typedef int                      (* ma_pa_stream_begin_write_proc)             (ma_pa_stream* s, void** data, size_t* nbytes);
typedef int                      (* ma_pa_stream_write_proc)                   (ma_pa_stream* s, const void* data, size_t nbytes, ma_pa_free_cb_t free_cb, int64_t offset, ma_pa_seek_mode_t seek);
typedef int                      (* ma_pa_stream_peek_proc)                    (ma_pa_stream* s, const void** data, size_t* nbytes);
typedef int                      (* ma_pa_stream_drop_proc)                    (ma_pa_stream* s);
typedef size_t                   (* ma_pa_stream_writable_size_proc)           (ma_pa_stream* s);
typedef size_t                   (* ma_pa_stream_readable_size_proc)           (ma_pa_stream* s);

typedef struct
{
    ma_uint32 count;
    ma_uint32 capacity;
    ma_device_info* pInfo;
} ma_pulse_device_enum_data;

static ma_result ma_result_from_pulse(int result)
{
    if (result < 0) {
        return MA_ERROR;
    }

    switch (result) {
        case MA_PA_OK:           return MA_SUCCESS;
        case MA_PA_ERR_ACCESS:   return MA_ACCESS_DENIED;
        case MA_PA_ERR_INVALID:  return MA_INVALID_ARGS;
        case MA_PA_ERR_NOENTITY: return MA_NO_DEVICE;
        default:                 return MA_ERROR;
    }
}

#if 0
static ma_pa_sample_format_t ma_format_to_pulse(ma_format format)
{
    if (ma_is_little_endian()) {
        switch (format) {
            case ma_format_s16: return MA_PA_SAMPLE_S16LE;
            case ma_format_s24: return MA_PA_SAMPLE_S24LE;
            case ma_format_s32: return MA_PA_SAMPLE_S32LE;
            case ma_format_f32: return MA_PA_SAMPLE_FLOAT32LE;
            default: break;
        }
    } else {
        switch (format) {
            case ma_format_s16: return MA_PA_SAMPLE_S16BE;
            case ma_format_s24: return MA_PA_SAMPLE_S24BE;
            case ma_format_s32: return MA_PA_SAMPLE_S32BE;
            case ma_format_f32: return MA_PA_SAMPLE_FLOAT32BE;
            default: break;
        }
    }

    /* Endian agnostic. */
    switch (format) {
        case ma_format_u8: return MA_PA_SAMPLE_U8;
        default: return MA_PA_SAMPLE_INVALID;
    }
}
#endif

static ma_format ma_format_from_pulse(ma_pa_sample_format_t format)
{
    if (ma_is_little_endian()) {
        switch (format) {
            case MA_PA_SAMPLE_S16LE:     return ma_format_s16;
            case MA_PA_SAMPLE_S24LE:     return ma_format_s24;
            case MA_PA_SAMPLE_S32LE:     return ma_format_s32;
            case MA_PA_SAMPLE_FLOAT32LE: return ma_format_f32;
            default: break;
        }
    } else {
        switch (format) {
            case MA_PA_SAMPLE_S16BE:     return ma_format_s16;
            case MA_PA_SAMPLE_S24BE:     return ma_format_s24;
            case MA_PA_SAMPLE_S32BE:     return ma_format_s32;
            case MA_PA_SAMPLE_FLOAT32BE: return ma_format_f32;
            default: break;
        }
    }

    /* Endian agnostic. */
    switch (format) {
        case MA_PA_SAMPLE_U8: return ma_format_u8;
        default: return ma_format_unknown;
    }
}

static ma_channel ma_channel_position_from_pulse(ma_pa_channel_position_t position)
{
    switch (position)
    {
        case MA_PA_CHANNEL_POSITION_INVALID:               return MA_CHANNEL_NONE;
        case MA_PA_CHANNEL_POSITION_MONO:                  return MA_CHANNEL_MONO;
        case MA_PA_CHANNEL_POSITION_FRONT_LEFT:            return MA_CHANNEL_FRONT_LEFT;
        case MA_PA_CHANNEL_POSITION_FRONT_RIGHT:           return MA_CHANNEL_FRONT_RIGHT;
        case MA_PA_CHANNEL_POSITION_FRONT_CENTER:          return MA_CHANNEL_FRONT_CENTER;
        case MA_PA_CHANNEL_POSITION_REAR_CENTER:           return MA_CHANNEL_BACK_CENTER;
        case MA_PA_CHANNEL_POSITION_REAR_LEFT:             return MA_CHANNEL_BACK_LEFT;
        case MA_PA_CHANNEL_POSITION_REAR_RIGHT:            return MA_CHANNEL_BACK_RIGHT;
        case MA_PA_CHANNEL_POSITION_LFE:                   return MA_CHANNEL_LFE;
        case MA_PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER:  return MA_CHANNEL_FRONT_LEFT_CENTER;
        case MA_PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER: return MA_CHANNEL_FRONT_RIGHT_CENTER;
        case MA_PA_CHANNEL_POSITION_SIDE_LEFT:             return MA_CHANNEL_SIDE_LEFT;
        case MA_PA_CHANNEL_POSITION_SIDE_RIGHT:            return MA_CHANNEL_SIDE_RIGHT;
        case MA_PA_CHANNEL_POSITION_AUX0:                  return MA_CHANNEL_AUX_0;
        case MA_PA_CHANNEL_POSITION_AUX1:                  return MA_CHANNEL_AUX_1;
        case MA_PA_CHANNEL_POSITION_AUX2:                  return MA_CHANNEL_AUX_2;
        case MA_PA_CHANNEL_POSITION_AUX3:                  return MA_CHANNEL_AUX_3;
        case MA_PA_CHANNEL_POSITION_AUX4:                  return MA_CHANNEL_AUX_4;
        case MA_PA_CHANNEL_POSITION_AUX5:                  return MA_CHANNEL_AUX_5;
        case MA_PA_CHANNEL_POSITION_AUX6:                  return MA_CHANNEL_AUX_6;
        case MA_PA_CHANNEL_POSITION_AUX7:                  return MA_CHANNEL_AUX_7;
        case MA_PA_CHANNEL_POSITION_AUX8:                  return MA_CHANNEL_AUX_8;
        case MA_PA_CHANNEL_POSITION_AUX9:                  return MA_CHANNEL_AUX_9;
        case MA_PA_CHANNEL_POSITION_AUX10:                 return MA_CHANNEL_AUX_10;
        case MA_PA_CHANNEL_POSITION_AUX11:                 return MA_CHANNEL_AUX_11;
        case MA_PA_CHANNEL_POSITION_AUX12:                 return MA_CHANNEL_AUX_12;
        case MA_PA_CHANNEL_POSITION_AUX13:                 return MA_CHANNEL_AUX_13;
        case MA_PA_CHANNEL_POSITION_AUX14:                 return MA_CHANNEL_AUX_14;
        case MA_PA_CHANNEL_POSITION_AUX15:                 return MA_CHANNEL_AUX_15;
        case MA_PA_CHANNEL_POSITION_AUX16:                 return MA_CHANNEL_AUX_16;
        case MA_PA_CHANNEL_POSITION_AUX17:                 return MA_CHANNEL_AUX_17;
        case MA_PA_CHANNEL_POSITION_AUX18:                 return MA_CHANNEL_AUX_18;
        case MA_PA_CHANNEL_POSITION_AUX19:                 return MA_CHANNEL_AUX_19;
        case MA_PA_CHANNEL_POSITION_AUX20:                 return MA_CHANNEL_AUX_20;
        case MA_PA_CHANNEL_POSITION_AUX21:                 return MA_CHANNEL_AUX_21;
        case MA_PA_CHANNEL_POSITION_AUX22:                 return MA_CHANNEL_AUX_22;
        case MA_PA_CHANNEL_POSITION_AUX23:                 return MA_CHANNEL_AUX_23;
        case MA_PA_CHANNEL_POSITION_AUX24:                 return MA_CHANNEL_AUX_24;
        case MA_PA_CHANNEL_POSITION_AUX25:                 return MA_CHANNEL_AUX_25;
        case MA_PA_CHANNEL_POSITION_AUX26:                 return MA_CHANNEL_AUX_26;
        case MA_PA_CHANNEL_POSITION_AUX27:                 return MA_CHANNEL_AUX_27;
        case MA_PA_CHANNEL_POSITION_AUX28:                 return MA_CHANNEL_AUX_28;
        case MA_PA_CHANNEL_POSITION_AUX29:                 return MA_CHANNEL_AUX_29;
        case MA_PA_CHANNEL_POSITION_AUX30:                 return MA_CHANNEL_AUX_30;
        case MA_PA_CHANNEL_POSITION_AUX31:                 return MA_CHANNEL_AUX_31;
        case MA_PA_CHANNEL_POSITION_TOP_CENTER:            return MA_CHANNEL_TOP_CENTER;
        case MA_PA_CHANNEL_POSITION_TOP_FRONT_LEFT:        return MA_CHANNEL_TOP_FRONT_LEFT;
        case MA_PA_CHANNEL_POSITION_TOP_FRONT_RIGHT:       return MA_CHANNEL_TOP_FRONT_RIGHT;
        case MA_PA_CHANNEL_POSITION_TOP_FRONT_CENTER:      return MA_CHANNEL_TOP_FRONT_CENTER;
        case MA_PA_CHANNEL_POSITION_TOP_REAR_LEFT:         return MA_CHANNEL_TOP_BACK_LEFT;
        case MA_PA_CHANNEL_POSITION_TOP_REAR_RIGHT:        return MA_CHANNEL_TOP_BACK_RIGHT;
        case MA_PA_CHANNEL_POSITION_TOP_REAR_CENTER:       return MA_CHANNEL_TOP_BACK_CENTER;
        default: return MA_CHANNEL_NONE;
    }
}

#if 0
static ma_pa_channel_position_t ma_channel_position_to_pulse(ma_channel position)
{
    switch (position)
    {
        case MA_CHANNEL_NONE:               return MA_PA_CHANNEL_POSITION_INVALID;
        case MA_CHANNEL_FRONT_LEFT:         return MA_PA_CHANNEL_POSITION_FRONT_LEFT;
        case MA_CHANNEL_FRONT_RIGHT:        return MA_PA_CHANNEL_POSITION_FRONT_RIGHT;
        case MA_CHANNEL_FRONT_CENTER:       return MA_PA_CHANNEL_POSITION_FRONT_CENTER;
        case MA_CHANNEL_LFE:                return MA_PA_CHANNEL_POSITION_LFE;
        case MA_CHANNEL_BACK_LEFT:          return MA_PA_CHANNEL_POSITION_REAR_LEFT;
        case MA_CHANNEL_BACK_RIGHT:         return MA_PA_CHANNEL_POSITION_REAR_RIGHT;
        case MA_CHANNEL_FRONT_LEFT_CENTER:  return MA_PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
        case MA_CHANNEL_FRONT_RIGHT_CENTER: return MA_PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
        case MA_CHANNEL_BACK_CENTER:        return MA_PA_CHANNEL_POSITION_REAR_CENTER;
        case MA_CHANNEL_SIDE_LEFT:          return MA_PA_CHANNEL_POSITION_SIDE_LEFT;
        case MA_CHANNEL_SIDE_RIGHT:         return MA_PA_CHANNEL_POSITION_SIDE_RIGHT;
        case MA_CHANNEL_TOP_CENTER:         return MA_PA_CHANNEL_POSITION_TOP_CENTER;
        case MA_CHANNEL_TOP_FRONT_LEFT:     return MA_PA_CHANNEL_POSITION_TOP_FRONT_LEFT;
        case MA_CHANNEL_TOP_FRONT_CENTER:   return MA_PA_CHANNEL_POSITION_TOP_FRONT_CENTER;
        case MA_CHANNEL_TOP_FRONT_RIGHT:    return MA_PA_CHANNEL_POSITION_TOP_FRONT_RIGHT;
        case MA_CHANNEL_TOP_BACK_LEFT:      return MA_PA_CHANNEL_POSITION_TOP_REAR_LEFT;
        case MA_CHANNEL_TOP_BACK_CENTER:    return MA_PA_CHANNEL_POSITION_TOP_REAR_CENTER;
        case MA_CHANNEL_TOP_BACK_RIGHT:     return MA_PA_CHANNEL_POSITION_TOP_REAR_RIGHT;
        case MA_CHANNEL_19:                 return MA_PA_CHANNEL_POSITION_AUX18;
        case MA_CHANNEL_20:                 return MA_PA_CHANNEL_POSITION_AUX19;
        case MA_CHANNEL_21:                 return MA_PA_CHANNEL_POSITION_AUX20;
        case MA_CHANNEL_22:                 return MA_PA_CHANNEL_POSITION_AUX21;
        case MA_CHANNEL_23:                 return MA_PA_CHANNEL_POSITION_AUX22;
        case MA_CHANNEL_24:                 return MA_PA_CHANNEL_POSITION_AUX23;
        case MA_CHANNEL_25:                 return MA_PA_CHANNEL_POSITION_AUX24;
        case MA_CHANNEL_26:                 return MA_PA_CHANNEL_POSITION_AUX25;
        case MA_CHANNEL_27:                 return MA_PA_CHANNEL_POSITION_AUX26;
        case MA_CHANNEL_28:                 return MA_PA_CHANNEL_POSITION_AUX27;
        case MA_CHANNEL_29:                 return MA_PA_CHANNEL_POSITION_AUX28;
        case MA_CHANNEL_30:                 return MA_PA_CHANNEL_POSITION_AUX29;
        case MA_CHANNEL_31:                 return MA_PA_CHANNEL_POSITION_AUX30;
        case MA_CHANNEL_32:                 return MA_PA_CHANNEL_POSITION_AUX31;
        default: return (ma_pa_channel_position_t)position;
    }
}
#endif

static ma_result ma_wait_for_operation__pulse(ma_context* pContext, ma_ptr pMainLoop, ma_pa_operation* pOP)
{
    int resultPA;
    ma_pa_operation_state_t state;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pOP != NULL);

    for (;;) {
        state = ((ma_pa_operation_get_state_proc)pContext->pulse.pa_operation_get_state)(pOP);
        if (state != MA_PA_OPERATION_RUNNING) {
            break;  /* Done. */
        }

        resultPA = ((ma_pa_mainloop_iterate_proc)pContext->pulse.pa_mainloop_iterate)((ma_pa_mainloop*)pMainLoop, 1, NULL);
        if (resultPA < 0) {
            return ma_result_from_pulse(resultPA);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_wait_for_operation_and_unref__pulse(ma_context* pContext, ma_ptr pMainLoop, ma_pa_operation* pOP)
{
    ma_result result;

    if (pOP == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_wait_for_operation__pulse(pContext, pMainLoop, pOP);
    ((ma_pa_operation_unref_proc)pContext->pulse.pa_operation_unref)(pOP);

    return result;
}

static ma_result ma_wait_for_pa_context_to_connect__pulse(ma_context* pContext, ma_ptr pMainLoop, ma_ptr pPulseContext)
{
    int resultPA;
    ma_pa_context_state_t state;

    for (;;) {
        state = ((ma_pa_context_get_state_proc)pContext->pulse.pa_context_get_state)((ma_pa_context*)pPulseContext);
        if (state == MA_PA_CONTEXT_READY) {
            break;  /* Done. */
        }

        if (state == MA_PA_CONTEXT_FAILED || state == MA_PA_CONTEXT_TERMINATED) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[PulseAudio] An error occurred while connecting the PulseAudio context.");
            return MA_ERROR;
        }

        resultPA = ((ma_pa_mainloop_iterate_proc)pContext->pulse.pa_mainloop_iterate)((ma_pa_mainloop*)pMainLoop, 1, NULL);
        if (resultPA < 0) {
            return ma_result_from_pulse(resultPA);
        }
    }

    /* Should never get here. */
    return MA_SUCCESS;
}

static ma_result ma_wait_for_pa_stream_to_connect__pulse(ma_context* pContext, ma_ptr pMainLoop, ma_ptr pStream)
{
    int resultPA;
    ma_pa_stream_state_t state;

    for (;;) {
        state = ((ma_pa_stream_get_state_proc)pContext->pulse.pa_stream_get_state)((ma_pa_stream*)pStream);
        if (state == MA_PA_STREAM_READY) {
            break;  /* Done. */
        }

        if (state == MA_PA_STREAM_FAILED || state == MA_PA_STREAM_TERMINATED) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[PulseAudio] An error occurred while connecting the PulseAudio stream.");
            return MA_ERROR;
        }

        resultPA = ((ma_pa_mainloop_iterate_proc)pContext->pulse.pa_mainloop_iterate)((ma_pa_mainloop*)pMainLoop, 1, NULL);
        if (resultPA < 0) {
            return ma_result_from_pulse(resultPA);
        }
    }

    return MA_SUCCESS;
}


static ma_result ma_init_pa_mainloop_and_pa_context__pulse(ma_context* pContext, const char* pApplicationName, const char* pServerName, ma_bool32 tryAutoSpawn, ma_ptr* ppMainLoop, ma_ptr* ppPulseContext)
{
    ma_result result;
    ma_ptr pMainLoop;
    ma_ptr pPulseContext;

    MA_ASSERT(ppMainLoop     != NULL);
    MA_ASSERT(ppPulseContext != NULL);

    /* The PulseAudio context maps well to miniaudio's notion of a context. The pa_context object will be initialized as part of the ma_context. */
    pMainLoop = ((ma_pa_mainloop_new_proc)pContext->pulse.pa_mainloop_new)();
    if (pMainLoop == NULL) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to create mainloop.");
        return MA_FAILED_TO_INIT_BACKEND;
    }

    pPulseContext = ((ma_pa_context_new_proc)pContext->pulse.pa_context_new)(((ma_pa_mainloop_get_api_proc)pContext->pulse.pa_mainloop_get_api)((ma_pa_mainloop*)pMainLoop), pApplicationName);
    if (pPulseContext == NULL) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to create PulseAudio context.");
        ((ma_pa_mainloop_free_proc)pContext->pulse.pa_mainloop_free)((ma_pa_mainloop*)(pMainLoop));
        return MA_FAILED_TO_INIT_BACKEND;
    }

    /* Now we need to connect to the context. Everything is asynchronous so we need to wait for it to connect before returning. */
    result = ma_result_from_pulse(((ma_pa_context_connect_proc)pContext->pulse.pa_context_connect)((ma_pa_context*)pPulseContext, pServerName, (tryAutoSpawn) ? 0 : MA_PA_CONTEXT_NOAUTOSPAWN, NULL));
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to connect PulseAudio context.");
        ((ma_pa_mainloop_free_proc)pContext->pulse.pa_mainloop_free)((ma_pa_mainloop*)(pMainLoop));
        return result;
    }

    /* Since ma_context_init() runs synchronously we need to wait for the PulseAudio context to connect before we return. */
    result = ma_wait_for_pa_context_to_connect__pulse(pContext, pMainLoop, pPulseContext);
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[PulseAudio] Waiting for connection failed.");
        ((ma_pa_mainloop_free_proc)pContext->pulse.pa_mainloop_free)((ma_pa_mainloop*)(pMainLoop));
        return result;
    }

    *ppMainLoop     = pMainLoop;
    *ppPulseContext = pPulseContext;

    return MA_SUCCESS;
}


static void ma_device_sink_info_callback(ma_pa_context* pPulseContext, const ma_pa_sink_info* pInfo, int endOfList, void* pUserData)
{
    ma_pa_sink_info* pInfoOut;

    if (endOfList > 0) {
        return;
    }

    /*
    There has been a report that indicates that pInfo can be null which results
    in a null pointer dereference below. We'll check for this for safety.
    */
    if (pInfo == NULL) {
        return;
    }

    pInfoOut = (ma_pa_sink_info*)pUserData;
    MA_ASSERT(pInfoOut != NULL);

    *pInfoOut = *pInfo;

    (void)pPulseContext; /* Unused. */
}

static void ma_device_source_info_callback(ma_pa_context* pPulseContext, const ma_pa_source_info* pInfo, int endOfList, void* pUserData)
{
    ma_pa_source_info* pInfoOut;

    if (endOfList > 0) {
        return;
    }

    /*
    There has been a report that indicates that pInfo can be null which results
    in a null pointer dereference below. We'll check for this for safety.
    */
    if (pInfo == NULL) {
        return;
    }

    pInfoOut = (ma_pa_source_info*)pUserData;
    MA_ASSERT(pInfoOut != NULL);

    *pInfoOut = *pInfo;

    (void)pPulseContext; /* Unused. */
}

#if 0
static void ma_device_sink_name_callback(ma_pa_context* pPulseContext, const ma_pa_sink_info* pInfo, int endOfList, void* pUserData)
{
    ma_device* pDevice;

    if (endOfList > 0) {
        return;
    }

    pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), pInfo->description, (size_t)-1);

    (void)pPulseContext; /* Unused. */
}

static void ma_device_source_name_callback(ma_pa_context* pPulseContext, const ma_pa_source_info* pInfo, int endOfList, void* pUserData)
{
    ma_device* pDevice;

    if (endOfList > 0) {
        return;
    }

    pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), pInfo->description, (size_t)-1);

    (void)pPulseContext; /* Unused. */
}
#endif

static ma_result ma_context_get_sink_info__pulse(ma_context* pContext, const char* pDeviceName, ma_pa_sink_info* pSinkInfo)
{
    ma_pa_operation* pOP;

    pOP = ((ma_pa_context_get_sink_info_by_name_proc)pContext->pulse.pa_context_get_sink_info_by_name)((ma_pa_context*)pContext->pulse.pPulseContext, pDeviceName, ma_device_sink_info_callback, pSinkInfo);
    if (pOP == NULL) {
        return MA_ERROR;
    }

    return ma_wait_for_operation_and_unref__pulse(pContext, pContext->pulse.pMainLoop, pOP);
}

static ma_result ma_context_get_source_info__pulse(ma_context* pContext, const char* pDeviceName, ma_pa_source_info* pSourceInfo)
{
    ma_pa_operation* pOP;

    pOP = ((ma_pa_context_get_source_info_by_name_proc)pContext->pulse.pa_context_get_source_info_by_name)((ma_pa_context*)pContext->pulse.pPulseContext, pDeviceName, ma_device_source_info_callback, pSourceInfo);
    if (pOP == NULL) {
        return MA_ERROR;
    }

    return ma_wait_for_operation_and_unref__pulse(pContext, pContext->pulse.pMainLoop, pOP);
}

static ma_result ma_context_get_default_device_index__pulse(ma_context* pContext, ma_device_type deviceType, ma_uint32* pIndex)
{
    ma_result result;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pIndex   != NULL);

    if (pIndex != NULL) {
        *pIndex = (ma_uint32)-1;
    }

    if (deviceType == ma_device_type_playback) {
        ma_pa_sink_info sinkInfo;
        result = ma_context_get_sink_info__pulse(pContext, NULL, &sinkInfo);
        if (result != MA_SUCCESS) {
            return result;
        }

        if (pIndex != NULL) {
            *pIndex = sinkInfo.index;
        }
    }

    if (deviceType == ma_device_type_capture) {
        ma_pa_source_info sourceInfo;
        result = ma_context_get_source_info__pulse(pContext, NULL, &sourceInfo);
        if (result != MA_SUCCESS) {
            return result;
        }

        if (pIndex != NULL) {
            *pIndex = sourceInfo.index;
        }
    }

    return MA_SUCCESS;
}


typedef struct
{
    ma_context* pContext;
    ma_enum_devices_callback_proc callback;
    void* pUserData;
    ma_bool32 isTerminated;
    ma_uint32 defaultDeviceIndexPlayback;
    ma_uint32 defaultDeviceIndexCapture;
} ma_context_enumerate_devices_callback_data__pulse;

static void ma_context_enumerate_devices_sink_callback__pulse(ma_pa_context* pPulseContext, const ma_pa_sink_info* pSinkInfo, int endOfList, void* pUserData)
{
    ma_context_enumerate_devices_callback_data__pulse* pData = (ma_context_enumerate_devices_callback_data__pulse*)pUserData;
    ma_device_info deviceInfo;

    MA_ASSERT(pData != NULL);

    if (endOfList || pData->isTerminated) {
        return;
    }

    MA_ZERO_OBJECT(&deviceInfo);

    /* The name from PulseAudio is the ID for miniaudio. */
    if (pSinkInfo->name != NULL) {
        ma_strncpy_s(deviceInfo.id.pulse, sizeof(deviceInfo.id.pulse), pSinkInfo->name, (size_t)-1);
    }

    /* The description from PulseAudio is the name for miniaudio. */
    if (pSinkInfo->description != NULL) {
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), pSinkInfo->description, (size_t)-1);
    }

    if (pSinkInfo->index == pData->defaultDeviceIndexPlayback) {
        deviceInfo.isDefault = MA_TRUE;
    }

    pData->isTerminated = !pData->callback(pData->pContext, ma_device_type_playback, &deviceInfo, pData->pUserData);

    (void)pPulseContext; /* Unused. */
}

static void ma_context_enumerate_devices_source_callback__pulse(ma_pa_context* pPulseContext, const ma_pa_source_info* pSourceInfo, int endOfList, void* pUserData)
{
    ma_context_enumerate_devices_callback_data__pulse* pData = (ma_context_enumerate_devices_callback_data__pulse*)pUserData;
    ma_device_info deviceInfo;

    MA_ASSERT(pData != NULL);

    if (endOfList || pData->isTerminated) {
        return;
    }

    MA_ZERO_OBJECT(&deviceInfo);

    /* The name from PulseAudio is the ID for miniaudio. */
    if (pSourceInfo->name != NULL) {
        ma_strncpy_s(deviceInfo.id.pulse, sizeof(deviceInfo.id.pulse), pSourceInfo->name, (size_t)-1);
    }

    /* The description from PulseAudio is the name for miniaudio. */
    if (pSourceInfo->description != NULL) {
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), pSourceInfo->description, (size_t)-1);
    }

    if (pSourceInfo->index == pData->defaultDeviceIndexCapture) {
        deviceInfo.isDefault = MA_TRUE;
    }

    pData->isTerminated = !pData->callback(pData->pContext, ma_device_type_capture, &deviceInfo, pData->pUserData);

    (void)pPulseContext; /* Unused. */
}

static ma_result ma_context_enumerate_devices__pulse(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_result result = MA_SUCCESS;
    ma_context_enumerate_devices_callback_data__pulse callbackData;
    ma_pa_operation* pOP = NULL;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    callbackData.pContext = pContext;
    callbackData.callback = callback;
    callbackData.pUserData = pUserData;
    callbackData.isTerminated = MA_FALSE;
    callbackData.defaultDeviceIndexPlayback = (ma_uint32)-1;
    callbackData.defaultDeviceIndexCapture  = (ma_uint32)-1;

    /* We need to get the index of the default devices. */
    ma_context_get_default_device_index__pulse(pContext, ma_device_type_playback, &callbackData.defaultDeviceIndexPlayback);
    ma_context_get_default_device_index__pulse(pContext, ma_device_type_capture,  &callbackData.defaultDeviceIndexCapture);

    /* Playback. */
    if (!callbackData.isTerminated) {
        pOP = ((ma_pa_context_get_sink_info_list_proc)pContext->pulse.pa_context_get_sink_info_list)((ma_pa_context*)(pContext->pulse.pPulseContext), ma_context_enumerate_devices_sink_callback__pulse, &callbackData);
        if (pOP == NULL) {
            result = MA_ERROR;
            goto done;
        }

        result = ma_wait_for_operation__pulse(pContext, pContext->pulse.pMainLoop, pOP);
        ((ma_pa_operation_unref_proc)pContext->pulse.pa_operation_unref)(pOP);

        if (result != MA_SUCCESS) {
            goto done;
        }
    }


    /* Capture. */
    if (!callbackData.isTerminated) {
        pOP = ((ma_pa_context_get_source_info_list_proc)pContext->pulse.pa_context_get_source_info_list)((ma_pa_context*)(pContext->pulse.pPulseContext), ma_context_enumerate_devices_source_callback__pulse, &callbackData);
        if (pOP == NULL) {
            result = MA_ERROR;
            goto done;
        }

        result = ma_wait_for_operation__pulse(pContext, pContext->pulse.pMainLoop, pOP);
        ((ma_pa_operation_unref_proc)pContext->pulse.pa_operation_unref)(pOP);

        if (result != MA_SUCCESS) {
            goto done;
        }
    }

done:
    return result;
}


typedef struct
{
    ma_device_info* pDeviceInfo;
    ma_uint32 defaultDeviceIndex;
    ma_bool32 foundDevice;
} ma_context_get_device_info_callback_data__pulse;

static void ma_context_get_device_info_sink_callback__pulse(ma_pa_context* pPulseContext, const ma_pa_sink_info* pInfo, int endOfList, void* pUserData)
{
    ma_context_get_device_info_callback_data__pulse* pData = (ma_context_get_device_info_callback_data__pulse*)pUserData;

    if (endOfList > 0) {
        return;
    }

    MA_ASSERT(pData != NULL);
    pData->foundDevice = MA_TRUE;

    if (pInfo->name != NULL) {
        ma_strncpy_s(pData->pDeviceInfo->id.pulse, sizeof(pData->pDeviceInfo->id.pulse), pInfo->name, (size_t)-1);
    }

    if (pInfo->description != NULL) {
        ma_strncpy_s(pData->pDeviceInfo->name, sizeof(pData->pDeviceInfo->name), pInfo->description, (size_t)-1);
    }

    /*
    We're just reporting a single data format here. I think technically PulseAudio might support
    all formats, but I don't trust that PulseAudio will do *anything* right, so I'm just going to
    report the "native" device format.
    */
    pData->pDeviceInfo->nativeDataFormats[0].format     = ma_format_from_pulse(pInfo->sample_spec.format);
    pData->pDeviceInfo->nativeDataFormats[0].channels   = pInfo->sample_spec.channels;
    pData->pDeviceInfo->nativeDataFormats[0].sampleRate = pInfo->sample_spec.rate;
    pData->pDeviceInfo->nativeDataFormats[0].flags      = 0;
    pData->pDeviceInfo->nativeDataFormatCount = 1;

    if (pData->defaultDeviceIndex == pInfo->index) {
        pData->pDeviceInfo->isDefault = MA_TRUE;
    }

    (void)pPulseContext; /* Unused. */
}

static void ma_context_get_device_info_source_callback__pulse(ma_pa_context* pPulseContext, const ma_pa_source_info* pInfo, int endOfList, void* pUserData)
{
    ma_context_get_device_info_callback_data__pulse* pData = (ma_context_get_device_info_callback_data__pulse*)pUserData;

    if (endOfList > 0) {
        return;
    }

    MA_ASSERT(pData != NULL);
    pData->foundDevice = MA_TRUE;

    if (pInfo->name != NULL) {
        ma_strncpy_s(pData->pDeviceInfo->id.pulse, sizeof(pData->pDeviceInfo->id.pulse), pInfo->name, (size_t)-1);
    }

    if (pInfo->description != NULL) {
        ma_strncpy_s(pData->pDeviceInfo->name, sizeof(pData->pDeviceInfo->name), pInfo->description, (size_t)-1);
    }

    /*
    We're just reporting a single data format here. I think technically PulseAudio might support
    all formats, but I don't trust that PulseAudio will do *anything* right, so I'm just going to
    report the "native" device format.
    */
    pData->pDeviceInfo->nativeDataFormats[0].format     = ma_format_from_pulse(pInfo->sample_spec.format);
    pData->pDeviceInfo->nativeDataFormats[0].channels   = pInfo->sample_spec.channels;
    pData->pDeviceInfo->nativeDataFormats[0].sampleRate = pInfo->sample_spec.rate;
    pData->pDeviceInfo->nativeDataFormats[0].flags      = 0;
    pData->pDeviceInfo->nativeDataFormatCount = 1;

    if (pData->defaultDeviceIndex == pInfo->index) {
        pData->pDeviceInfo->isDefault = MA_TRUE;
    }

    (void)pPulseContext; /* Unused. */
}

static ma_result ma_context_get_device_info__pulse(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_result result = MA_SUCCESS;
    ma_context_get_device_info_callback_data__pulse callbackData;
    ma_pa_operation* pOP = NULL;
    const char* pDeviceName = NULL;

    MA_ASSERT(pContext != NULL);

    callbackData.pDeviceInfo = pDeviceInfo;
    callbackData.foundDevice = MA_FALSE;

    if (pDeviceID != NULL) {
        pDeviceName = pDeviceID->pulse;
    } else {
        pDeviceName = NULL;
    }

    result = ma_context_get_default_device_index__pulse(pContext, deviceType, &callbackData.defaultDeviceIndex);

    if (deviceType == ma_device_type_playback) {
        pOP = ((ma_pa_context_get_sink_info_by_name_proc)pContext->pulse.pa_context_get_sink_info_by_name)((ma_pa_context*)(pContext->pulse.pPulseContext), pDeviceName, ma_context_get_device_info_sink_callback__pulse, &callbackData);
    } else {
        pOP = ((ma_pa_context_get_source_info_by_name_proc)pContext->pulse.pa_context_get_source_info_by_name)((ma_pa_context*)(pContext->pulse.pPulseContext), pDeviceName, ma_context_get_device_info_source_callback__pulse, &callbackData);
    }

    if (pOP != NULL) {
        ma_wait_for_operation_and_unref__pulse(pContext, pContext->pulse.pMainLoop, pOP);
    } else {
        result = MA_ERROR;
        goto done;
    }

    if (!callbackData.foundDevice) {
        result = MA_NO_DEVICE;
        goto done;
    }

done:
    return result;
}

static ma_result ma_device_uninit__pulse(ma_device* pDevice)
{
    ma_context* pContext;

    MA_ASSERT(pDevice != NULL);

    pContext = pDevice->pContext;
    MA_ASSERT(pContext != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ((ma_pa_stream_disconnect_proc)pContext->pulse.pa_stream_disconnect)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
        ((ma_pa_stream_unref_proc)pContext->pulse.pa_stream_unref)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ((ma_pa_stream_disconnect_proc)pContext->pulse.pa_stream_disconnect)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
        ((ma_pa_stream_unref_proc)pContext->pulse.pa_stream_unref)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
    }

    if (pDevice->type == ma_device_type_duplex) {
        ma_duplex_rb_uninit(&pDevice->duplexRB);
    }

    ((ma_pa_context_disconnect_proc)pContext->pulse.pa_context_disconnect)((ma_pa_context*)pDevice->pulse.pPulseContext);
    ((ma_pa_context_unref_proc)pContext->pulse.pa_context_unref)((ma_pa_context*)pDevice->pulse.pPulseContext);
    ((ma_pa_mainloop_free_proc)pContext->pulse.pa_mainloop_free)((ma_pa_mainloop*)pDevice->pulse.pMainLoop);

    return MA_SUCCESS;
}

static ma_pa_buffer_attr ma_device__pa_buffer_attr_new(ma_uint32 periodSizeInFrames, ma_uint32 periods, const ma_pa_sample_spec* ss)
{
    ma_pa_buffer_attr attr;
    attr.maxlength = periodSizeInFrames * periods * ma_get_bytes_per_frame(ma_format_from_pulse(ss->format), ss->channels);
    attr.tlength   = attr.maxlength / periods;
    attr.prebuf    = (ma_uint32)-1;
    attr.minreq    = (ma_uint32)-1;
    attr.fragsize  = attr.maxlength / periods;

    return attr;
}

static ma_pa_stream* ma_device__pa_stream_new__pulse(ma_device* pDevice, const char* pStreamName, const ma_pa_sample_spec* ss, const ma_pa_channel_map* cmap)
{
    static ma_atomic_uint32 g_StreamCounter = { 0 };
    char actualStreamName[256];

    if (pStreamName != NULL) {
        ma_strncpy_s(actualStreamName, sizeof(actualStreamName), pStreamName, (size_t)-1);
    } else {
        const char* pBaseName = "miniaudio:";
        size_t baseNameLen = strlen(pBaseName);
        ma_strcpy_s(actualStreamName, sizeof(actualStreamName), pBaseName);
        ma_itoa_s((int)ma_atomic_uint32_get(&g_StreamCounter), actualStreamName + baseNameLen, sizeof(actualStreamName)-baseNameLen, 10);
    }
    ma_atomic_uint32_fetch_add(&g_StreamCounter, 1);

    return ((ma_pa_stream_new_proc)pDevice->pContext->pulse.pa_stream_new)((ma_pa_context*)pDevice->pulse.pPulseContext, actualStreamName, ss, cmap);
}


static void ma_device_on_read__pulse(ma_pa_stream* pStream, size_t byteCount, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    ma_uint32 bpf;
    ma_uint32 deviceState;
    ma_uint64 frameCount;
    ma_uint64 framesProcessed;

    MA_ASSERT(pDevice != NULL);

    /*
    Don't do anything if the device isn't initialized yet. Yes, this can happen because PulseAudio
    can fire this callback before the stream has even started. Ridiculous.
    */
    deviceState = ma_device_get_state(pDevice);
    if (deviceState != ma_device_state_starting && deviceState != ma_device_state_started) {
        return;
    }

    bpf = ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
    MA_ASSERT(bpf > 0);

    frameCount = byteCount / bpf;
    framesProcessed = 0;

    while (ma_device_get_state(pDevice) == ma_device_state_started && framesProcessed < frameCount) {
        const void* pMappedPCMFrames;
        size_t bytesMapped;
        ma_uint64 framesMapped;

        int pulseResult = ((ma_pa_stream_peek_proc)pDevice->pContext->pulse.pa_stream_peek)(pStream, &pMappedPCMFrames, &bytesMapped);
        if (pulseResult < 0) {
            break; /* Failed to map. Abort. */
        }

        framesMapped = bytesMapped / bpf;
        if (framesMapped > 0) {
            if (pMappedPCMFrames != NULL) {
                ma_device_handle_backend_data_callback(pDevice, NULL, pMappedPCMFrames, framesMapped);
            } else {
                /* It's a hole. */
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[PulseAudio] ma_device_on_read__pulse: Hole.\n");
            }

            pulseResult = ((ma_pa_stream_drop_proc)pDevice->pContext->pulse.pa_stream_drop)(pStream);
            if (pulseResult < 0) {
                break;  /* Failed to drop the buffer. */
            }

            framesProcessed += framesMapped;

        } else {
            /* Nothing was mapped. Just abort. */
            break;
        }
    }
}

static ma_result ma_device_write_to_stream__pulse(ma_device* pDevice, ma_pa_stream* pStream, ma_uint64* pFramesProcessed)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 framesProcessed = 0;
    size_t bytesMapped;
    ma_uint32 bpf;
    ma_uint32 deviceState;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pStream != NULL);

    bpf = ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    MA_ASSERT(bpf > 0);

    deviceState = ma_device_get_state(pDevice);

    bytesMapped = ((ma_pa_stream_writable_size_proc)pDevice->pContext->pulse.pa_stream_writable_size)(pStream);
    if (bytesMapped != (size_t)-1) {
        if (bytesMapped > 0) {
            ma_uint64 framesMapped;
            void* pMappedPCMFrames;
            int pulseResult = ((ma_pa_stream_begin_write_proc)pDevice->pContext->pulse.pa_stream_begin_write)(pStream, &pMappedPCMFrames, &bytesMapped);
            if (pulseResult < 0) {
                result = ma_result_from_pulse(pulseResult);
                goto done;
            }

            framesMapped = bytesMapped / bpf;

            if (deviceState == ma_device_state_started || deviceState == ma_device_state_starting) {  /* Check for starting state just in case this is being used to do the initial fill. */
                ma_device_handle_backend_data_callback(pDevice, pMappedPCMFrames, NULL, framesMapped);
            } else {
                /* Device is not started. Write silence. */
                ma_silence_pcm_frames(pMappedPCMFrames, framesMapped, pDevice->playback.format, pDevice->playback.channels);
            }

            pulseResult = ((ma_pa_stream_write_proc)pDevice->pContext->pulse.pa_stream_write)(pStream, pMappedPCMFrames, bytesMapped, NULL, 0, MA_PA_SEEK_RELATIVE);
            if (pulseResult < 0) {
                result = ma_result_from_pulse(pulseResult);
                goto done;  /* Failed to write data to stream. */
            }

            framesProcessed += framesMapped;
        } else {
            result = MA_SUCCESS;  /* No data available for writing. */
            goto done;
        }
    } else {
        result = MA_ERROR;  /* Failed to retrieve the writable size. Abort. */
        goto done;
    }

done:
    if (pFramesProcessed != NULL) {
        *pFramesProcessed = framesProcessed;
    }

    return result;
}

static void ma_device_on_write__pulse(ma_pa_stream* pStream, size_t byteCount, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    ma_uint32 bpf;
    ma_uint64 frameCount;
    ma_uint64 framesProcessed;
    ma_uint32 deviceState;
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    /*
    Don't do anything if the device isn't initialized yet. Yes, this can happen because PulseAudio
    can fire this callback before the stream has even started. Ridiculous.
    */
    deviceState = ma_device_get_state(pDevice);
    if (deviceState != ma_device_state_starting && deviceState != ma_device_state_started) {
        return;
    }

    bpf = ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    MA_ASSERT(bpf > 0);

    frameCount = byteCount / bpf;
    framesProcessed = 0;

    while (framesProcessed < frameCount) {
        ma_uint64 framesProcessedThisIteration;

        /* Don't keep trying to process frames if the device isn't started. */
        deviceState = ma_device_get_state(pDevice);
        if (deviceState != ma_device_state_starting && deviceState != ma_device_state_started) {
            break;
        }

        result = ma_device_write_to_stream__pulse(pDevice, pStream, &framesProcessedThisIteration);
        if (result != MA_SUCCESS) {
            break;
        }

        framesProcessed += framesProcessedThisIteration;
    }
}

static void ma_device_on_suspended__pulse(ma_pa_stream* pStream, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    int suspended;

    (void)pStream;

    suspended = ((ma_pa_stream_is_suspended_proc)pDevice->pContext->pulse.pa_stream_is_suspended)(pStream);
    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[Pulse] Device suspended state changed. pa_stream_is_suspended() returned %d.\n", suspended);

    if (suspended < 0) {
        return;
    }

    if (suspended == 1) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[Pulse] Device suspended state changed. Suspended.\n");
        ma_device__on_notification_stopped(pDevice);
    } else {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "[Pulse] Device suspended state changed. Resumed.\n");
        ma_device__on_notification_started(pDevice);
    }
}

static void ma_device_on_rerouted__pulse(ma_pa_stream* pStream, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;

    (void)pStream;
    (void)pUserData;

    ma_device__on_notification_rerouted(pDevice);
}

static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__pulse(const ma_device_descriptor* pDescriptor, ma_uint32 nativeSampleRate, ma_performance_profile performanceProfile)
{
    /*
    There have been reports from users where buffers of < ~20ms result glitches when running through
    PipeWire. To work around this we're going to have to use a different default buffer size.
    */
    const ma_uint32 defaultPeriodSizeInMilliseconds_LowLatency   = 25;
    const ma_uint32 defaultPeriodSizeInMilliseconds_Conservative = MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE;

    MA_ASSERT(nativeSampleRate != 0);

    if (pDescriptor->periodSizeInFrames == 0) {
        if (pDescriptor->periodSizeInMilliseconds == 0) {
            if (performanceProfile == ma_performance_profile_low_latency) {
                return ma_calculate_buffer_size_in_frames_from_milliseconds(defaultPeriodSizeInMilliseconds_LowLatency, nativeSampleRate);
            } else {
                return ma_calculate_buffer_size_in_frames_from_milliseconds(defaultPeriodSizeInMilliseconds_Conservative, nativeSampleRate);
            }
        } else {
            return ma_calculate_buffer_size_in_frames_from_milliseconds(pDescriptor->periodSizeInMilliseconds, nativeSampleRate);
        }
    } else {
        return pDescriptor->periodSizeInFrames;
    }
}

static ma_result ma_device_init__pulse(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    /*
    Notes for PulseAudio:

      - When both the period size in frames and milliseconds are 0, we default to miniaudio's
        default buffer sizes rather than leaving it up to PulseAudio because I don't trust
        PulseAudio to give us any kind of reasonable latency by default.

      - Do not ever, *ever* forget to use MA_PA_STREAM_ADJUST_LATENCY. If you don't specify this
        flag, capture mode will just not work properly until you open another PulseAudio app.
    */

    ma_result result = MA_SUCCESS;
    int error = 0;
    const char* devPlayback = NULL;
    const char* devCapture  = NULL;
    ma_format format = ma_format_unknown;
    ma_uint32 channels = 0;
    ma_uint32 sampleRate = 0;
    ma_pa_sink_info sinkInfo;
    ma_pa_source_info sourceInfo;
    ma_pa_sample_spec ss;
    ma_pa_channel_map cmap;
    ma_pa_buffer_attr attr;
    const ma_pa_sample_spec* pActualSS   = NULL;
    const ma_pa_buffer_attr* pActualAttr = NULL;
    const ma_pa_channel_map* pActualChannelMap = NULL;
    ma_uint32 iChannel;
    ma_pa_stream_flags_t streamFlags;

    MA_ASSERT(pDevice != NULL);
    MA_ZERO_OBJECT(&pDevice->pulse);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /* No exclusive mode with the PulseAudio backend. */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pConfig->playback.shareMode == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pConfig->capture.shareMode  == ma_share_mode_exclusive)) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        if (pDescriptorPlayback->pDeviceID != NULL) {
            devPlayback = pDescriptorPlayback->pDeviceID->pulse;
        }

        format     = pDescriptorPlayback->format;
        channels   = pDescriptorPlayback->channels;
        sampleRate = pDescriptorPlayback->sampleRate;
    }

    if (pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) {
        if (pDescriptorCapture->pDeviceID != NULL) {
            devCapture = pDescriptorCapture->pDeviceID->pulse;
        }

        format     = pDescriptorCapture->format;
        channels   = pDescriptorCapture->channels;
        sampleRate = pDescriptorCapture->sampleRate;
    }



    result = ma_init_pa_mainloop_and_pa_context__pulse(pDevice->pContext, pDevice->pContext->pulse.pApplicationName, pDevice->pContext->pulse.pServerName, MA_FALSE, &pDevice->pulse.pMainLoop, &pDevice->pulse.pPulseContext);
    if (result != MA_SUCCESS) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to initialize PA mainloop and context for device.\n");
        return result;
    }

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        result = ma_context_get_source_info__pulse(pDevice->pContext, devCapture, &sourceInfo);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to retrieve source info for capture device.");
            goto on_error0;
        }

        ss   = sourceInfo.sample_spec;
        cmap = sourceInfo.channel_map;

        /* Use the requested channel count if we have one. */
        if (pDescriptorCapture->channels != 0) {
            ss.channels = pDescriptorCapture->channels;
        }

        /* Use a default channel map. */
        ((ma_pa_channel_map_init_extend_proc)pDevice->pContext->pulse.pa_channel_map_init_extend)(&cmap, ss.channels, pConfig->pulse.channelMap);

        /* Use the requested sample rate if one was specified. */
        if (pDescriptorCapture->sampleRate != 0) {
            ss.rate = pDescriptorCapture->sampleRate;
        }
        streamFlags = MA_PA_STREAM_START_CORKED | MA_PA_STREAM_ADJUST_LATENCY;

        if (ma_format_from_pulse(ss.format) == ma_format_unknown) {
            if (ma_is_little_endian()) {
                ss.format = MA_PA_SAMPLE_FLOAT32LE;
            } else {
                ss.format = MA_PA_SAMPLE_FLOAT32BE;
            }
            streamFlags |= MA_PA_STREAM_FIX_FORMAT;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] sample_spec.format not supported by miniaudio. Defaulting to PA_SAMPLE_FLOAT32.\n");
        }
        if (ss.rate == 0) {
            ss.rate = MA_DEFAULT_SAMPLE_RATE;
            streamFlags |= MA_PA_STREAM_FIX_RATE;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] sample_spec.rate = 0. Defaulting to %d.\n", ss.rate);
        }
        if (ss.channels == 0) {
            ss.channels = MA_DEFAULT_CHANNELS;
            streamFlags |= MA_PA_STREAM_FIX_CHANNELS;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] sample_spec.channels = 0. Defaulting to %d.\n", ss.channels);
        }

        /* We now have enough information to calculate our actual period size in frames. */
        pDescriptorCapture->periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__pulse(pDescriptorCapture, ss.rate, pConfig->performanceProfile);

        attr = ma_device__pa_buffer_attr_new(pDescriptorCapture->periodSizeInFrames, pDescriptorCapture->periodCount, &ss);
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Capture attr: maxlength=%d, tlength=%d, prebuf=%d, minreq=%d, fragsize=%d; periodSizeInFrames=%d\n", attr.maxlength, attr.tlength, attr.prebuf, attr.minreq, attr.fragsize, pDescriptorCapture->periodSizeInFrames);

        pDevice->pulse.pStreamCapture = ma_device__pa_stream_new__pulse(pDevice, pConfig->pulse.pStreamNameCapture, &ss, &cmap);
        if (pDevice->pulse.pStreamCapture == NULL) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to create PulseAudio capture stream.\n");
            result = MA_ERROR;
            goto on_error0;
        }


        /* The callback needs to be set before connecting the stream. */
        ((ma_pa_stream_set_read_callback_proc)pDevice->pContext->pulse.pa_stream_set_read_callback)((ma_pa_stream*)pDevice->pulse.pStreamCapture, ma_device_on_read__pulse, pDevice);

        /* State callback for checking when the device has been corked. */
        ((ma_pa_stream_set_suspended_callback_proc)pDevice->pContext->pulse.pa_stream_set_suspended_callback)((ma_pa_stream*)pDevice->pulse.pStreamCapture, ma_device_on_suspended__pulse, pDevice);

        /* Rerouting notification. */
        ((ma_pa_stream_set_moved_callback_proc)pDevice->pContext->pulse.pa_stream_set_moved_callback)((ma_pa_stream*)pDevice->pulse.pStreamCapture, ma_device_on_rerouted__pulse, pDevice);


        /* Connect after we've got all of our internal state set up. */
        if (devCapture != NULL) {
            streamFlags |= MA_PA_STREAM_DONT_MOVE;
        }

        error = ((ma_pa_stream_connect_record_proc)pDevice->pContext->pulse.pa_stream_connect_record)((ma_pa_stream*)pDevice->pulse.pStreamCapture, devCapture, &attr, streamFlags);
        if (error != MA_PA_OK) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to connect PulseAudio capture stream.");
            result = ma_result_from_pulse(error);
            goto on_error1;
        }

        result = ma_wait_for_pa_stream_to_connect__pulse(pDevice->pContext, pDevice->pulse.pMainLoop, (ma_pa_stream*)pDevice->pulse.pStreamCapture);
        if (result != MA_SUCCESS) {
            goto on_error2;
        }


        /* Internal format. */
        pActualSS = ((ma_pa_stream_get_sample_spec_proc)pDevice->pContext->pulse.pa_stream_get_sample_spec)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
        if (pActualSS != NULL) {
            ss = *pActualSS;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Capture sample spec: format=%s, channels=%d, rate=%d\n", ma_get_format_name(ma_format_from_pulse(ss.format)), ss.channels, ss.rate);
        } else {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Failed to retrieve capture sample spec.\n");
        }

        pDescriptorCapture->format     = ma_format_from_pulse(ss.format);
        pDescriptorCapture->channels   = ss.channels;
        pDescriptorCapture->sampleRate = ss.rate;

        if (pDescriptorCapture->format == ma_format_unknown || pDescriptorCapture->channels == 0 || pDescriptorCapture->sampleRate == 0) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Capture sample spec is invalid. Device unusable by miniaudio. format=%s, channels=%d, sampleRate=%d.\n", ma_get_format_name(pDescriptorCapture->format), pDescriptorCapture->channels, pDescriptorCapture->sampleRate);
            result = MA_ERROR;
            goto on_error4;
        }


        /* Internal channel map. */
        pActualChannelMap = ((ma_pa_stream_get_channel_map_proc)pDevice->pContext->pulse.pa_stream_get_channel_map)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
        if (pActualChannelMap == NULL) {
            pActualChannelMap = &cmap;  /* Fallback just in case. */
        }

        /*
        Bug in PipeWire. There have been reports that PipeWire is returning AUX channels when reporting
        the channel map. To somewhat workaround this, I'm hacking in a hard coded channel map for mono
        and stereo. In this case it should be safe to assume mono = MONO and stereo = LEFT/RIGHT. For
        all other channel counts we need to just put up with whatever PipeWire reports and hope it gets
        fixed sooner than later. I might remove this hack later.
        */
        if (pDescriptorCapture->channels > 2) {
            for (iChannel = 0; iChannel < pDescriptorCapture->channels; iChannel += 1) {
                pDescriptorCapture->channelMap[iChannel] = ma_channel_position_from_pulse(pActualChannelMap->map[iChannel]);
            }
        } else {
            /* Hack for mono and stereo. */
            if (pDescriptorCapture->channels == 1) {
                pDescriptorCapture->channelMap[0] = MA_CHANNEL_MONO;
            } else if (pDescriptorCapture->channels == 2) {
                pDescriptorCapture->channelMap[0] = MA_CHANNEL_FRONT_LEFT;
                pDescriptorCapture->channelMap[1] = MA_CHANNEL_FRONT_RIGHT;
            } else {
                MA_ASSERT(MA_FALSE);    /* Should never hit this. */
            }
        }


        /* Buffer. */
        pActualAttr = ((ma_pa_stream_get_buffer_attr_proc)pDevice->pContext->pulse.pa_stream_get_buffer_attr)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
        if (pActualAttr != NULL) {
            attr = *pActualAttr;
        }

        if (attr.fragsize > 0) {
            pDescriptorCapture->periodCount = ma_max(attr.maxlength / attr.fragsize, 1);
        } else {
            pDescriptorCapture->periodCount = 1;
        }

        pDescriptorCapture->periodSizeInFrames = attr.maxlength / ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels) / pDescriptorCapture->periodCount;
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Capture actual attr: maxlength=%d, tlength=%d, prebuf=%d, minreq=%d, fragsize=%d; periodSizeInFrames=%d\n", attr.maxlength, attr.tlength, attr.prebuf, attr.minreq, attr.fragsize, pDescriptorCapture->periodSizeInFrames);
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        result = ma_context_get_sink_info__pulse(pDevice->pContext, devPlayback, &sinkInfo);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to retrieve sink info for playback device.\n");
            goto on_error2;
        }

        ss   = sinkInfo.sample_spec;
        cmap = sinkInfo.channel_map;

        /* Use the requested channel count if we have one. */
        if (pDescriptorPlayback->channels != 0) {
            ss.channels = pDescriptorPlayback->channels;
        }

        /* Use a default channel map. */
        ((ma_pa_channel_map_init_extend_proc)pDevice->pContext->pulse.pa_channel_map_init_extend)(&cmap, ss.channels, pConfig->pulse.channelMap);


        /* Use the requested sample rate if one was specified. */
        if (pDescriptorPlayback->sampleRate != 0) {
            ss.rate = pDescriptorPlayback->sampleRate;
        }

        streamFlags = MA_PA_STREAM_START_CORKED | MA_PA_STREAM_ADJUST_LATENCY;
        if (ma_format_from_pulse(ss.format) == ma_format_unknown) {
            if (ma_is_little_endian()) {
                ss.format = MA_PA_SAMPLE_FLOAT32LE;
            } else {
                ss.format = MA_PA_SAMPLE_FLOAT32BE;
            }
            streamFlags |= MA_PA_STREAM_FIX_FORMAT;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] sample_spec.format not supported by miniaudio. Defaulting to PA_SAMPLE_FLOAT32.\n");
        }
        if (ss.rate == 0) {
            ss.rate = MA_DEFAULT_SAMPLE_RATE;
            streamFlags |= MA_PA_STREAM_FIX_RATE;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] sample_spec.rate = 0. Defaulting to %d.\n", ss.rate);
        }
        if (ss.channels == 0) {
            ss.channels = MA_DEFAULT_CHANNELS;
            streamFlags |= MA_PA_STREAM_FIX_CHANNELS;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] sample_spec.channels = 0. Defaulting to %d.\n", ss.channels);
        }

        /* We now have enough information to calculate the actual buffer size in frames. */
        pDescriptorPlayback->periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__pulse(pDescriptorPlayback, ss.rate, pConfig->performanceProfile);

        attr = ma_device__pa_buffer_attr_new(pDescriptorPlayback->periodSizeInFrames, pDescriptorPlayback->periodCount, &ss);

        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Playback attr: maxlength=%d, tlength=%d, prebuf=%d, minreq=%d, fragsize=%d; periodSizeInFrames=%d\n", attr.maxlength, attr.tlength, attr.prebuf, attr.minreq, attr.fragsize, pDescriptorPlayback->periodSizeInFrames);

        pDevice->pulse.pStreamPlayback = ma_device__pa_stream_new__pulse(pDevice, pConfig->pulse.pStreamNamePlayback, &ss, &cmap);
        if (pDevice->pulse.pStreamPlayback == NULL) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to create PulseAudio playback stream.\n");
            result = MA_ERROR;
            goto on_error2;
        }


        /*
        Note that this callback will be fired as soon as the stream is connected, even though it's started as corked. The callback needs to handle a
        device state of ma_device_state_uninitialized.
        */
        ((ma_pa_stream_set_write_callback_proc)pDevice->pContext->pulse.pa_stream_set_write_callback)((ma_pa_stream*)pDevice->pulse.pStreamPlayback, ma_device_on_write__pulse, pDevice);

        /* State callback for checking when the device has been corked. */
        ((ma_pa_stream_set_suspended_callback_proc)pDevice->pContext->pulse.pa_stream_set_suspended_callback)((ma_pa_stream*)pDevice->pulse.pStreamPlayback, ma_device_on_suspended__pulse, pDevice);

        /* Rerouting notification. */
        ((ma_pa_stream_set_moved_callback_proc)pDevice->pContext->pulse.pa_stream_set_moved_callback)((ma_pa_stream*)pDevice->pulse.pStreamPlayback, ma_device_on_rerouted__pulse, pDevice);


        /* Connect after we've got all of our internal state set up. */
        if (devPlayback != NULL) {
            streamFlags |= MA_PA_STREAM_DONT_MOVE;
        }

        error = ((ma_pa_stream_connect_playback_proc)pDevice->pContext->pulse.pa_stream_connect_playback)((ma_pa_stream*)pDevice->pulse.pStreamPlayback, devPlayback, &attr, streamFlags, NULL, NULL);
        if (error != MA_PA_OK) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to connect PulseAudio playback stream.");
            result = ma_result_from_pulse(error);
            goto on_error3;
        }

        result = ma_wait_for_pa_stream_to_connect__pulse(pDevice->pContext, pDevice->pulse.pMainLoop, (ma_pa_stream*)pDevice->pulse.pStreamPlayback);
        if (result != MA_SUCCESS) {
            goto on_error3;
        }


        /* Internal format. */
        pActualSS = ((ma_pa_stream_get_sample_spec_proc)pDevice->pContext->pulse.pa_stream_get_sample_spec)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
        if (pActualSS != NULL) {
            ss = *pActualSS;
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Playback sample spec: format=%s, channels=%d, rate=%d\n", ma_get_format_name(ma_format_from_pulse(ss.format)), ss.channels, ss.rate);
        } else {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Failed to retrieve playback sample spec.\n");
        }

        pDescriptorPlayback->format     = ma_format_from_pulse(ss.format);
        pDescriptorPlayback->channels   = ss.channels;
        pDescriptorPlayback->sampleRate = ss.rate;

        if (pDescriptorPlayback->format == ma_format_unknown || pDescriptorPlayback->channels == 0 || pDescriptorPlayback->sampleRate == 0) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Playback sample spec is invalid. Device unusable by miniaudio. format=%s, channels=%d, sampleRate=%d.\n", ma_get_format_name(pDescriptorPlayback->format), pDescriptorPlayback->channels, pDescriptorPlayback->sampleRate);
            result = MA_ERROR;
            goto on_error4;
        }


        /* Internal channel map. */
        pActualChannelMap = ((ma_pa_stream_get_channel_map_proc)pDevice->pContext->pulse.pa_stream_get_channel_map)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
        if (pActualChannelMap == NULL) {
            pActualChannelMap = &cmap;  /* Fallback just in case. */
        }

        /*
        Bug in PipeWire. There have been reports that PipeWire is returning AUX channels when reporting
        the channel map. To somewhat workaround this, I'm hacking in a hard coded channel map for mono
        and stereo. In this case it should be safe to assume mono = MONO and stereo = LEFT/RIGHT. For
        all other channel counts we need to just put up with whatever PipeWire reports and hope it gets
        fixed sooner than later. I might remove this hack later.
        */
        if (pDescriptorPlayback->channels > 2) {
            for (iChannel = 0; iChannel < pDescriptorPlayback->channels; iChannel += 1) {
                pDescriptorPlayback->channelMap[iChannel] = ma_channel_position_from_pulse(pActualChannelMap->map[iChannel]);
            }
        } else {
            /* Hack for mono and stereo. */
            if (pDescriptorPlayback->channels == 1) {
                pDescriptorPlayback->channelMap[0] = MA_CHANNEL_MONO;
            } else if (pDescriptorPlayback->channels == 2) {
                pDescriptorPlayback->channelMap[0] = MA_CHANNEL_FRONT_LEFT;
                pDescriptorPlayback->channelMap[1] = MA_CHANNEL_FRONT_RIGHT;
            } else {
                MA_ASSERT(MA_FALSE);    /* Should never hit this. */
            }
        }


        /* Buffer. */
        pActualAttr = ((ma_pa_stream_get_buffer_attr_proc)pDevice->pContext->pulse.pa_stream_get_buffer_attr)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
        if (pActualAttr != NULL) {
            attr = *pActualAttr;
        }

        if (attr.tlength > 0) {
            pDescriptorPlayback->periodCount = ma_max(attr.maxlength / attr.tlength, 1);
        } else {
            pDescriptorPlayback->periodCount = 1;
        }

        pDescriptorPlayback->periodSizeInFrames = attr.maxlength / ma_get_bytes_per_frame(pDescriptorPlayback->format, pDescriptorPlayback->channels) / pDescriptorPlayback->periodCount;
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[PulseAudio] Playback actual attr: maxlength=%d, tlength=%d, prebuf=%d, minreq=%d, fragsize=%d; internalPeriodSizeInFrames=%d\n", attr.maxlength, attr.tlength, attr.prebuf, attr.minreq, attr.fragsize, pDescriptorPlayback->periodSizeInFrames);
    }


    /*
    We need a ring buffer for handling duplex mode. We can use the main duplex ring buffer in the main
    part of the ma_device struct. We cannot, however, depend on ma_device_init() initializing this for
    us later on because that will only do it if it's a fully asynchronous backend - i.e. the
    onDeviceDataLoop callback is NULL, which is not the case for PulseAudio.
    */
    if (pConfig->deviceType == ma_device_type_duplex) {
        ma_format rbFormat     = (format != ma_format_unknown) ? format     : pDescriptorCapture->format;
        ma_uint32 rbChannels   = (channels   > 0)              ? channels   : pDescriptorCapture->channels;
        ma_uint32 rbSampleRate = (sampleRate > 0)              ? sampleRate : pDescriptorCapture->sampleRate;

        result = ma_duplex_rb_init(rbFormat, rbChannels, rbSampleRate, pDescriptorCapture->sampleRate, pDescriptorCapture->periodSizeInFrames, &pDevice->pContext->allocationCallbacks, &pDevice->duplexRB);
        if (result != MA_SUCCESS) {
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to initialize ring buffer. %s.\n", ma_result_description(result));
            goto on_error4;
        }
    }

    return MA_SUCCESS;


on_error4:
    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ((ma_pa_stream_disconnect_proc)pDevice->pContext->pulse.pa_stream_disconnect)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
    }
on_error3:
    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ((ma_pa_stream_unref_proc)pDevice->pContext->pulse.pa_stream_unref)((ma_pa_stream*)pDevice->pulse.pStreamPlayback);
    }
on_error2:
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ((ma_pa_stream_disconnect_proc)pDevice->pContext->pulse.pa_stream_disconnect)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
    }
on_error1:
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ((ma_pa_stream_unref_proc)pDevice->pContext->pulse.pa_stream_unref)((ma_pa_stream*)pDevice->pulse.pStreamCapture);
    }
on_error0:
    return result;
}


static void ma_pulse_operation_complete_callback(ma_pa_stream* pStream, int success, void* pUserData)
{
    ma_bool32* pIsSuccessful = (ma_bool32*)pUserData;
    MA_ASSERT(pIsSuccessful != NULL);

    *pIsSuccessful = (ma_bool32)success;

    (void)pStream; /* Unused. */
}

static ma_result ma_device__cork_stream__pulse(ma_device* pDevice, ma_device_type deviceType, int cork)
{
    ma_context* pContext = pDevice->pContext;
    ma_bool32 wasSuccessful;
    ma_pa_stream* pStream;
    ma_pa_operation* pOP;
    ma_result result;

    /* This should not be called with a duplex device type. */
    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }

    wasSuccessful = MA_FALSE;

    pStream = (ma_pa_stream*)((deviceType == ma_device_type_capture) ? pDevice->pulse.pStreamCapture : pDevice->pulse.pStreamPlayback);
    MA_ASSERT(pStream != NULL);

    pOP = ((ma_pa_stream_cork_proc)pContext->pulse.pa_stream_cork)(pStream, cork, ma_pulse_operation_complete_callback, &wasSuccessful);
    if (pOP == NULL) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to cork PulseAudio stream.");
        return MA_ERROR;
    }

    result = ma_wait_for_operation_and_unref__pulse(pDevice->pContext, pDevice->pulse.pMainLoop, pOP);
    if (result != MA_SUCCESS) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] An error occurred while waiting for the PulseAudio stream to cork.");
        return result;
    }

    if (!wasSuccessful) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[PulseAudio] Failed to %s PulseAudio stream.", (cork) ? "stop" : "start");
        return MA_ERROR;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__pulse(ma_device* pDevice)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        result = ma_device__cork_stream__pulse(pDevice, ma_device_type_capture, 0);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        /*
        We need to fill some data before uncorking. Not doing this will result in the write callback
        never getting fired. We're not going to abort if writing fails because I still want the device
        to get uncorked.
        */
        ma_device_write_to_stream__pulse(pDevice, (ma_pa_stream*)(pDevice->pulse.pStreamPlayback), NULL);   /* No need to check the result here. Always want to fall through an uncork.*/

        result = ma_device__cork_stream__pulse(pDevice, ma_device_type_playback, 0);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__pulse(ma_device* pDevice)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        result = ma_device__cork_stream__pulse(pDevice, ma_device_type_capture, 1);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        /*
        Ideally we would drain the device here, but there's been cases where PulseAudio seems to be
        broken on some systems to the point where no audio processing seems to happen. When this
        happens, draining never completes and we get stuck here. For now I'm disabling draining of
        the device so we don't just freeze the application.
        */
    #if 0
        ma_pa_operation* pOP = ((ma_pa_stream_drain_proc)pDevice->pContext->pulse.pa_stream_drain)((ma_pa_stream*)pDevice->pulse.pStreamPlayback, ma_pulse_operation_complete_callback, &wasSuccessful);
        ma_wait_for_operation_and_unref__pulse(pDevice->pContext, pDevice->pulse.pMainLoop, pOP);
    #endif

        result = ma_device__cork_stream__pulse(pDevice, ma_device_type_playback, 1);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_data_loop__pulse(ma_device* pDevice)
{
    int resultPA;

    MA_ASSERT(pDevice != NULL);

    /* NOTE: Don't start the device here. It'll be done at a higher level. */

    /*
    All data is handled through callbacks. All we need to do is iterate over the main loop and let
    the callbacks deal with it.
    */
    while (ma_device_get_state(pDevice) == ma_device_state_started) {
        resultPA = ((ma_pa_mainloop_iterate_proc)pDevice->pContext->pulse.pa_mainloop_iterate)((ma_pa_mainloop*)pDevice->pulse.pMainLoop, 1, NULL);
        if (resultPA < 0) {
            break;
        }
    }

    /* NOTE: Don't stop the device here. It'll be done at a higher level. */
    return MA_SUCCESS;
}

static ma_result ma_device_data_loop_wakeup__pulse(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    ((ma_pa_mainloop_wakeup_proc)pDevice->pContext->pulse.pa_mainloop_wakeup)((ma_pa_mainloop*)pDevice->pulse.pMainLoop);

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__pulse(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_pulseaudio);

    ((ma_pa_context_disconnect_proc)pContext->pulse.pa_context_disconnect)((ma_pa_context*)pContext->pulse.pPulseContext);
    ((ma_pa_context_unref_proc)pContext->pulse.pa_context_unref)((ma_pa_context*)pContext->pulse.pPulseContext);
    ((ma_pa_mainloop_free_proc)pContext->pulse.pa_mainloop_free)((ma_pa_mainloop*)pContext->pulse.pMainLoop);

    ma_free(pContext->pulse.pServerName, &pContext->allocationCallbacks);
    ma_free(pContext->pulse.pApplicationName, &pContext->allocationCallbacks);

#ifndef MA_NO_RUNTIME_LINKING
    ma_dlclose(ma_context_get_log(pContext), pContext->pulse.pulseSO);
#endif

    return MA_SUCCESS;
}

static ma_result ma_context_init__pulse(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    ma_result result;
#ifndef MA_NO_RUNTIME_LINKING
    const char* libpulseNames[] = {
        "libpulse.so",
        "libpulse.so.0"
    };
    size_t i;

    for (i = 0; i < ma_countof(libpulseNames); ++i) {
        pContext->pulse.pulseSO = ma_dlopen(ma_context_get_log(pContext), libpulseNames[i]);
        if (pContext->pulse.pulseSO != NULL) {
            break;
        }
    }

    if (pContext->pulse.pulseSO == NULL) {
        return MA_NO_BACKEND;
    }

    pContext->pulse.pa_mainloop_new                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_mainloop_new");
    pContext->pulse.pa_mainloop_free                   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_mainloop_free");
    pContext->pulse.pa_mainloop_quit                   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_mainloop_quit");
    pContext->pulse.pa_mainloop_get_api                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_mainloop_get_api");
    pContext->pulse.pa_mainloop_iterate                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_mainloop_iterate");
    pContext->pulse.pa_mainloop_wakeup                 = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_mainloop_wakeup");
    pContext->pulse.pa_threaded_mainloop_new           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_new");
    pContext->pulse.pa_threaded_mainloop_free          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_free");
    pContext->pulse.pa_threaded_mainloop_start         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_start");
    pContext->pulse.pa_threaded_mainloop_stop          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_stop");
    pContext->pulse.pa_threaded_mainloop_lock          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_lock");
    pContext->pulse.pa_threaded_mainloop_unlock        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_unlock");
    pContext->pulse.pa_threaded_mainloop_wait          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_wait");
    pContext->pulse.pa_threaded_mainloop_signal        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_signal");
    pContext->pulse.pa_threaded_mainloop_accept        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_accept");
    pContext->pulse.pa_threaded_mainloop_get_retval    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_get_retval");
    pContext->pulse.pa_threaded_mainloop_get_api       = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_get_api");
    pContext->pulse.pa_threaded_mainloop_in_thread     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_in_thread");
    pContext->pulse.pa_threaded_mainloop_set_name      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_threaded_mainloop_set_name");
    pContext->pulse.pa_context_new                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_new");
    pContext->pulse.pa_context_unref                   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_unref");
    pContext->pulse.pa_context_connect                 = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_connect");
    pContext->pulse.pa_context_disconnect              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_disconnect");
    pContext->pulse.pa_context_set_state_callback      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_set_state_callback");
    pContext->pulse.pa_context_get_state               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_get_state");
    pContext->pulse.pa_context_get_sink_info_list      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_get_sink_info_list");
    pContext->pulse.pa_context_get_source_info_list    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_get_source_info_list");
    pContext->pulse.pa_context_get_sink_info_by_name   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_get_sink_info_by_name");
    pContext->pulse.pa_context_get_source_info_by_name = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_context_get_source_info_by_name");
    pContext->pulse.pa_operation_unref                 = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_operation_unref");
    pContext->pulse.pa_operation_get_state             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_operation_get_state");
    pContext->pulse.pa_channel_map_init_extend         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_channel_map_init_extend");
    pContext->pulse.pa_channel_map_valid               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_channel_map_valid");
    pContext->pulse.pa_channel_map_compatible          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_channel_map_compatible");
    pContext->pulse.pa_stream_new                      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_new");
    pContext->pulse.pa_stream_unref                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_unref");
    pContext->pulse.pa_stream_connect_playback         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_connect_playback");
    pContext->pulse.pa_stream_connect_record           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_connect_record");
    pContext->pulse.pa_stream_disconnect               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_disconnect");
    pContext->pulse.pa_stream_get_state                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_get_state");
    pContext->pulse.pa_stream_get_sample_spec          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_get_sample_spec");
    pContext->pulse.pa_stream_get_channel_map          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_get_channel_map");
    pContext->pulse.pa_stream_get_buffer_attr          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_get_buffer_attr");
    pContext->pulse.pa_stream_set_buffer_attr          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_set_buffer_attr");
    pContext->pulse.pa_stream_get_device_name          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_get_device_name");
    pContext->pulse.pa_stream_set_write_callback       = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_set_write_callback");
    pContext->pulse.pa_stream_set_read_callback        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_set_read_callback");
    pContext->pulse.pa_stream_set_suspended_callback   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_set_suspended_callback");
    pContext->pulse.pa_stream_set_moved_callback       = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_set_moved_callback");
    pContext->pulse.pa_stream_is_suspended             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_is_suspended");
    pContext->pulse.pa_stream_flush                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_flush");
    pContext->pulse.pa_stream_drain                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_drain");
    pContext->pulse.pa_stream_is_corked                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_is_corked");
    pContext->pulse.pa_stream_cork                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_cork");
    pContext->pulse.pa_stream_trigger                  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_trigger");
    pContext->pulse.pa_stream_begin_write              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_begin_write");
    pContext->pulse.pa_stream_write                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_write");
    pContext->pulse.pa_stream_peek                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_peek");
    pContext->pulse.pa_stream_drop                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_drop");
    pContext->pulse.pa_stream_writable_size            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_writable_size");
    pContext->pulse.pa_stream_readable_size            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->pulse.pulseSO, "pa_stream_readable_size");
#else
    /* This strange assignment system is just for type safety. */
    ma_pa_mainloop_new_proc                    _pa_mainloop_new                   = pa_mainloop_new;
    ma_pa_mainloop_free_proc                   _pa_mainloop_free                  = pa_mainloop_free;
    ma_pa_mainloop_quit_proc                   _pa_mainloop_quit                  = pa_mainloop_quit;
    ma_pa_mainloop_get_api_proc                _pa_mainloop_get_api               = pa_mainloop_get_api;
    ma_pa_mainloop_iterate_proc                _pa_mainloop_iterate               = pa_mainloop_iterate;
    ma_pa_mainloop_wakeup_proc                 _pa_mainloop_wakeup                = pa_mainloop_wakeup;
    ma_pa_threaded_mainloop_new_proc           _pa_threaded_mainloop_new          = pa_threaded_mainloop_new;
    ma_pa_threaded_mainloop_free_proc          _pa_threaded_mainloop_free         = pa_threaded_mainloop_free;
    ma_pa_threaded_mainloop_start_proc         _pa_threaded_mainloop_start        = pa_threaded_mainloop_start;
    ma_pa_threaded_mainloop_stop_proc          _pa_threaded_mainloop_stop         = pa_threaded_mainloop_stop;
    ma_pa_threaded_mainloop_lock_proc          _pa_threaded_mainloop_lock         = pa_threaded_mainloop_lock;
    ma_pa_threaded_mainloop_unlock_proc        _pa_threaded_mainloop_unlock       = pa_threaded_mainloop_unlock;
    ma_pa_threaded_mainloop_wait_proc          _pa_threaded_mainloop_wait         = pa_threaded_mainloop_wait;
    ma_pa_threaded_mainloop_signal_proc        _pa_threaded_mainloop_signal       = pa_threaded_mainloop_signal;
    ma_pa_threaded_mainloop_accept_proc        _pa_threaded_mainloop_accept       = pa_threaded_mainloop_accept;
    ma_pa_threaded_mainloop_get_retval_proc    _pa_threaded_mainloop_get_retval   = pa_threaded_mainloop_get_retval;
    ma_pa_threaded_mainloop_get_api_proc       _pa_threaded_mainloop_get_api      = pa_threaded_mainloop_get_api;
    ma_pa_threaded_mainloop_in_thread_proc     _pa_threaded_mainloop_in_thread    = pa_threaded_mainloop_in_thread;
    ma_pa_threaded_mainloop_set_name_proc      _pa_threaded_mainloop_set_name     = pa_threaded_mainloop_set_name;
    ma_pa_context_new_proc                     _pa_context_new                    = pa_context_new;
    ma_pa_context_unref_proc                   _pa_context_unref                  = pa_context_unref;
    ma_pa_context_connect_proc                 _pa_context_connect                = pa_context_connect;
    ma_pa_context_disconnect_proc              _pa_context_disconnect             = pa_context_disconnect;
    ma_pa_context_set_state_callback_proc      _pa_context_set_state_callback     = pa_context_set_state_callback;
    ma_pa_context_get_state_proc               _pa_context_get_state              = pa_context_get_state;
    ma_pa_context_get_sink_info_list_proc      _pa_context_get_sink_info_list     = pa_context_get_sink_info_list;
    ma_pa_context_get_source_info_list_proc    _pa_context_get_source_info_list   = pa_context_get_source_info_list;
    ma_pa_context_get_sink_info_by_name_proc   _pa_context_get_sink_info_by_name  = pa_context_get_sink_info_by_name;
    ma_pa_context_get_source_info_by_name_proc _pa_context_get_source_info_by_name= pa_context_get_source_info_by_name;
    ma_pa_operation_unref_proc                 _pa_operation_unref                = pa_operation_unref;
    ma_pa_operation_get_state_proc             _pa_operation_get_state            = pa_operation_get_state;
    ma_pa_channel_map_init_extend_proc         _pa_channel_map_init_extend        = pa_channel_map_init_extend;
    ma_pa_channel_map_valid_proc               _pa_channel_map_valid              = pa_channel_map_valid;
    ma_pa_channel_map_compatible_proc          _pa_channel_map_compatible         = pa_channel_map_compatible;
    ma_pa_stream_new_proc                      _pa_stream_new                     = pa_stream_new;
    ma_pa_stream_unref_proc                    _pa_stream_unref                   = pa_stream_unref;
    ma_pa_stream_connect_playback_proc         _pa_stream_connect_playback        = pa_stream_connect_playback;
    ma_pa_stream_connect_record_proc           _pa_stream_connect_record          = pa_stream_connect_record;
    ma_pa_stream_disconnect_proc               _pa_stream_disconnect              = pa_stream_disconnect;
    ma_pa_stream_get_state_proc                _pa_stream_get_state               = pa_stream_get_state;
    ma_pa_stream_get_sample_spec_proc          _pa_stream_get_sample_spec         = pa_stream_get_sample_spec;
    ma_pa_stream_get_channel_map_proc          _pa_stream_get_channel_map         = pa_stream_get_channel_map;
    ma_pa_stream_get_buffer_attr_proc          _pa_stream_get_buffer_attr         = pa_stream_get_buffer_attr;
    ma_pa_stream_set_buffer_attr_proc          _pa_stream_set_buffer_attr         = pa_stream_set_buffer_attr;
    ma_pa_stream_get_device_name_proc          _pa_stream_get_device_name         = pa_stream_get_device_name;
    ma_pa_stream_set_write_callback_proc       _pa_stream_set_write_callback      = pa_stream_set_write_callback;
    ma_pa_stream_set_read_callback_proc        _pa_stream_set_read_callback       = pa_stream_set_read_callback;
    ma_pa_stream_set_suspended_callback_proc   _pa_stream_set_suspended_callback  = pa_stream_set_suspended_callback;
    ma_pa_stream_set_moved_callback_proc       _pa_stream_set_moved_callback      = pa_stream_set_moved_callback;
    ma_pa_stream_is_suspended_proc             _pa_stream_is_suspended            = pa_stream_is_suspended;
    ma_pa_stream_flush_proc                    _pa_stream_flush                   = pa_stream_flush;
    ma_pa_stream_drain_proc                    _pa_stream_drain                   = pa_stream_drain;
    ma_pa_stream_is_corked_proc                _pa_stream_is_corked               = pa_stream_is_corked;
    ma_pa_stream_cork_proc                     _pa_stream_cork                    = pa_stream_cork;
    ma_pa_stream_trigger_proc                  _pa_stream_trigger                 = pa_stream_trigger;
    ma_pa_stream_begin_write_proc              _pa_stream_begin_write             = pa_stream_begin_write;
    ma_pa_stream_write_proc                    _pa_stream_write                   = pa_stream_write;
    ma_pa_stream_peek_proc                     _pa_stream_peek                    = pa_stream_peek;
    ma_pa_stream_drop_proc                     _pa_stream_drop                    = pa_stream_drop;
    ma_pa_stream_writable_size_proc            _pa_stream_writable_size           = pa_stream_writable_size;
    ma_pa_stream_readable_size_proc            _pa_stream_readable_size           = pa_stream_readable_size;

    pContext->pulse.pa_mainloop_new                    = (ma_proc)_pa_mainloop_new;
    pContext->pulse.pa_mainloop_free                   = (ma_proc)_pa_mainloop_free;
    pContext->pulse.pa_mainloop_quit                   = (ma_proc)_pa_mainloop_quit;
    pContext->pulse.pa_mainloop_get_api                = (ma_proc)_pa_mainloop_get_api;
    pContext->pulse.pa_mainloop_iterate                = (ma_proc)_pa_mainloop_iterate;
    pContext->pulse.pa_mainloop_wakeup                 = (ma_proc)_pa_mainloop_wakeup;
    pContext->pulse.pa_threaded_mainloop_new           = (ma_proc)_pa_threaded_mainloop_new;
    pContext->pulse.pa_threaded_mainloop_free          = (ma_proc)_pa_threaded_mainloop_free;
    pContext->pulse.pa_threaded_mainloop_start         = (ma_proc)_pa_threaded_mainloop_start;
    pContext->pulse.pa_threaded_mainloop_stop          = (ma_proc)_pa_threaded_mainloop_stop;
    pContext->pulse.pa_threaded_mainloop_lock          = (ma_proc)_pa_threaded_mainloop_lock;
    pContext->pulse.pa_threaded_mainloop_unlock        = (ma_proc)_pa_threaded_mainloop_unlock;
    pContext->pulse.pa_threaded_mainloop_wait          = (ma_proc)_pa_threaded_mainloop_wait;
    pContext->pulse.pa_threaded_mainloop_signal        = (ma_proc)_pa_threaded_mainloop_signal;
    pContext->pulse.pa_threaded_mainloop_accept        = (ma_proc)_pa_threaded_mainloop_accept;
    pContext->pulse.pa_threaded_mainloop_get_retval    = (ma_proc)_pa_threaded_mainloop_get_retval;
    pContext->pulse.pa_threaded_mainloop_get_api       = (ma_proc)_pa_threaded_mainloop_get_api;
    pContext->pulse.pa_threaded_mainloop_in_thread     = (ma_proc)_pa_threaded_mainloop_in_thread;
    pContext->pulse.pa_threaded_mainloop_set_name      = (ma_proc)_pa_threaded_mainloop_set_name;
    pContext->pulse.pa_context_new                     = (ma_proc)_pa_context_new;
    pContext->pulse.pa_context_unref                   = (ma_proc)_pa_context_unref;
    pContext->pulse.pa_context_connect                 = (ma_proc)_pa_context_connect;
    pContext->pulse.pa_context_disconnect              = (ma_proc)_pa_context_disconnect;
    pContext->pulse.pa_context_set_state_callback      = (ma_proc)_pa_context_set_state_callback;
    pContext->pulse.pa_context_get_state               = (ma_proc)_pa_context_get_state;
    pContext->pulse.pa_context_get_sink_info_list      = (ma_proc)_pa_context_get_sink_info_list;
    pContext->pulse.pa_context_get_source_info_list    = (ma_proc)_pa_context_get_source_info_list;
    pContext->pulse.pa_context_get_sink_info_by_name   = (ma_proc)_pa_context_get_sink_info_by_name;
    pContext->pulse.pa_context_get_source_info_by_name = (ma_proc)_pa_context_get_source_info_by_name;
    pContext->pulse.pa_operation_unref                 = (ma_proc)_pa_operation_unref;
    pContext->pulse.pa_operation_get_state             = (ma_proc)_pa_operation_get_state;
    pContext->pulse.pa_channel_map_init_extend         = (ma_proc)_pa_channel_map_init_extend;
    pContext->pulse.pa_channel_map_valid               = (ma_proc)_pa_channel_map_valid;
    pContext->pulse.pa_channel_map_compatible          = (ma_proc)_pa_channel_map_compatible;
    pContext->pulse.pa_stream_new                      = (ma_proc)_pa_stream_new;
    pContext->pulse.pa_stream_unref                    = (ma_proc)_pa_stream_unref;
    pContext->pulse.pa_stream_connect_playback         = (ma_proc)_pa_stream_connect_playback;
    pContext->pulse.pa_stream_connect_record           = (ma_proc)_pa_stream_connect_record;
    pContext->pulse.pa_stream_disconnect               = (ma_proc)_pa_stream_disconnect;
    pContext->pulse.pa_stream_get_state                = (ma_proc)_pa_stream_get_state;
    pContext->pulse.pa_stream_get_sample_spec          = (ma_proc)_pa_stream_get_sample_spec;
    pContext->pulse.pa_stream_get_channel_map          = (ma_proc)_pa_stream_get_channel_map;
    pContext->pulse.pa_stream_get_buffer_attr          = (ma_proc)_pa_stream_get_buffer_attr;
    pContext->pulse.pa_stream_set_buffer_attr          = (ma_proc)_pa_stream_set_buffer_attr;
    pContext->pulse.pa_stream_get_device_name          = (ma_proc)_pa_stream_get_device_name;
    pContext->pulse.pa_stream_set_write_callback       = (ma_proc)_pa_stream_set_write_callback;
    pContext->pulse.pa_stream_set_read_callback        = (ma_proc)_pa_stream_set_read_callback;
    pContext->pulse.pa_stream_set_suspended_callback   = (ma_proc)_pa_stream_set_suspended_callback;
    pContext->pulse.pa_stream_set_moved_callback       = (ma_proc)_pa_stream_set_moved_callback;
    pContext->pulse.pa_stream_is_suspended             = (ma_proc)_pa_stream_is_suspended;
    pContext->pulse.pa_stream_flush                    = (ma_proc)_pa_stream_flush;
    pContext->pulse.pa_stream_drain                    = (ma_proc)_pa_stream_drain;
    pContext->pulse.pa_stream_is_corked                = (ma_proc)_pa_stream_is_corked;
    pContext->pulse.pa_stream_cork                     = (ma_proc)_pa_stream_cork;
    pContext->pulse.pa_stream_trigger                  = (ma_proc)_pa_stream_trigger;
    pContext->pulse.pa_stream_begin_write              = (ma_proc)_pa_stream_begin_write;
    pContext->pulse.pa_stream_write                    = (ma_proc)_pa_stream_write;
    pContext->pulse.pa_stream_peek                     = (ma_proc)_pa_stream_peek;
    pContext->pulse.pa_stream_drop                     = (ma_proc)_pa_stream_drop;
    pContext->pulse.pa_stream_writable_size            = (ma_proc)_pa_stream_writable_size;
    pContext->pulse.pa_stream_readable_size            = (ma_proc)_pa_stream_readable_size;
#endif

    /* We need to make a copy of the application and server names so we can pass them to the pa_context of each device. */
    pContext->pulse.pApplicationName = ma_copy_string(pConfig->pulse.pApplicationName, &pContext->allocationCallbacks);
    if (pContext->pulse.pApplicationName == NULL && pConfig->pulse.pApplicationName != NULL) {
        return MA_OUT_OF_MEMORY;
    }

    pContext->pulse.pServerName = ma_copy_string(pConfig->pulse.pServerName, &pContext->allocationCallbacks);
    if (pContext->pulse.pServerName == NULL && pConfig->pulse.pServerName != NULL) {
        ma_free(pContext->pulse.pApplicationName, &pContext->allocationCallbacks);
        return MA_OUT_OF_MEMORY;
    }

    result = ma_init_pa_mainloop_and_pa_context__pulse(pContext, pConfig->pulse.pApplicationName, pConfig->pulse.pServerName, pConfig->pulse.tryAutoSpawn, &pContext->pulse.pMainLoop, &pContext->pulse.pPulseContext);
    if (result != MA_SUCCESS) {
        ma_free(pContext->pulse.pServerName, &pContext->allocationCallbacks);
        ma_free(pContext->pulse.pApplicationName, &pContext->allocationCallbacks);
    #ifndef MA_NO_RUNTIME_LINKING
        ma_dlclose(ma_context_get_log(pContext), pContext->pulse.pulseSO);
    #endif
        return result;
    }

    /* With pa_mainloop we run a synchronous backend, but we implement our own main loop. */
    pCallbacks->onContextInit             = ma_context_init__pulse;
    pCallbacks->onContextUninit           = ma_context_uninit__pulse;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__pulse;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__pulse;
    pCallbacks->onDeviceInit              = ma_device_init__pulse;
    pCallbacks->onDeviceUninit            = ma_device_uninit__pulse;
    pCallbacks->onDeviceStart             = ma_device_start__pulse;
    pCallbacks->onDeviceStop              = ma_device_stop__pulse;
    pCallbacks->onDeviceRead              = NULL;   /* Not used because we're implementing onDeviceDataLoop. */
    pCallbacks->onDeviceWrite             = NULL;   /* Not used because we're implementing onDeviceDataLoop. */
    pCallbacks->onDeviceDataLoop          = ma_device_data_loop__pulse;
    pCallbacks->onDeviceDataLoopWakeup    = ma_device_data_loop_wakeup__pulse;

    return MA_SUCCESS;
}
#endif


/******************************************************************************

JACK Backend

******************************************************************************/
#ifdef MA_HAS_JACK

/* It is assumed jack.h is available when compile-time linking is being used. */
#ifdef MA_NO_RUNTIME_LINKING
#include <jack/jack.h>

typedef jack_nframes_t              ma_jack_nframes_t;
typedef jack_options_t              ma_jack_options_t;
typedef jack_status_t               ma_jack_status_t;
typedef jack_client_t               ma_jack_client_t;
typedef jack_port_t                 ma_jack_port_t;
typedef JackProcessCallback         ma_JackProcessCallback;
typedef JackBufferSizeCallback      ma_JackBufferSizeCallback;
typedef JackShutdownCallback        ma_JackShutdownCallback;
#define MA_JACK_DEFAULT_AUDIO_TYPE  JACK_DEFAULT_AUDIO_TYPE
#define ma_JackNoStartServer        JackNoStartServer
#define ma_JackPortIsInput          JackPortIsInput
#define ma_JackPortIsOutput         JackPortIsOutput
#define ma_JackPortIsPhysical       JackPortIsPhysical
#else
typedef ma_uint32               ma_jack_nframes_t;
typedef int                     ma_jack_options_t;
typedef int                     ma_jack_status_t;
typedef struct ma_jack_client_t ma_jack_client_t;
typedef struct ma_jack_port_t   ma_jack_port_t;
typedef int  (* ma_JackProcessCallback)   (ma_jack_nframes_t nframes, void* arg);
typedef int  (* ma_JackBufferSizeCallback)(ma_jack_nframes_t nframes, void* arg);
typedef void (* ma_JackShutdownCallback)  (void* arg);
#define MA_JACK_DEFAULT_AUDIO_TYPE "32 bit float mono audio"
#define ma_JackNoStartServer       1
#define ma_JackPortIsInput         1
#define ma_JackPortIsOutput        2
#define ma_JackPortIsPhysical      4
#endif

typedef ma_jack_client_t* (* ma_jack_client_open_proc)             (const char* client_name, ma_jack_options_t options, ma_jack_status_t* status, ...);
typedef int               (* ma_jack_client_close_proc)            (ma_jack_client_t* client);
typedef int               (* ma_jack_client_name_size_proc)        (void);
typedef int               (* ma_jack_set_process_callback_proc)    (ma_jack_client_t* client, ma_JackProcessCallback process_callback, void* arg);
typedef int               (* ma_jack_set_buffer_size_callback_proc)(ma_jack_client_t* client, ma_JackBufferSizeCallback bufsize_callback, void* arg);
typedef void              (* ma_jack_on_shutdown_proc)             (ma_jack_client_t* client, ma_JackShutdownCallback function, void* arg);
typedef ma_jack_nframes_t (* ma_jack_get_sample_rate_proc)         (ma_jack_client_t* client);
typedef ma_jack_nframes_t (* ma_jack_get_buffer_size_proc)         (ma_jack_client_t* client);
typedef const char**      (* ma_jack_get_ports_proc)               (ma_jack_client_t* client, const char* port_name_pattern, const char* type_name_pattern, unsigned long flags);
typedef int               (* ma_jack_activate_proc)                (ma_jack_client_t* client);
typedef int               (* ma_jack_deactivate_proc)              (ma_jack_client_t* client);
typedef int               (* ma_jack_connect_proc)                 (ma_jack_client_t* client, const char* source_port, const char* destination_port);
typedef ma_jack_port_t*   (* ma_jack_port_register_proc)           (ma_jack_client_t* client, const char* port_name, const char* port_type, unsigned long flags, unsigned long buffer_size);
typedef const char*       (* ma_jack_port_name_proc)               (const ma_jack_port_t* port);
typedef void*             (* ma_jack_port_get_buffer_proc)         (ma_jack_port_t* port, ma_jack_nframes_t nframes);
typedef void              (* ma_jack_free_proc)                    (void* ptr);

static ma_result ma_context_open_client__jack(ma_context* pContext, ma_jack_client_t** ppClient)
{
    size_t maxClientNameSize;
    char clientName[256];
    ma_jack_status_t status;
    ma_jack_client_t* pClient;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppClient != NULL);

    if (ppClient) {
        *ppClient = NULL;
    }

    maxClientNameSize = ((ma_jack_client_name_size_proc)pContext->jack.jack_client_name_size)(); /* Includes null terminator. */
    ma_strncpy_s(clientName, ma_min(sizeof(clientName), maxClientNameSize), (pContext->jack.pClientName != NULL) ? pContext->jack.pClientName : "miniaudio", (size_t)-1);

    pClient = ((ma_jack_client_open_proc)pContext->jack.jack_client_open)(clientName, (pContext->jack.tryStartServer) ? 0 : ma_JackNoStartServer, &status, NULL);
    if (pClient == NULL) {
        return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
    }

    if (ppClient) {
        *ppClient = pClient;
    }

    return MA_SUCCESS;
}


static ma_result ma_context_enumerate_devices__jack(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_bool32 cbResult = MA_TRUE;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* Playback. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
        deviceInfo.isDefault = MA_TRUE;    /* JACK only uses default devices. */
        cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
    }

    /* Capture. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
        deviceInfo.isDefault = MA_TRUE;    /* JACK only uses default devices. */
        cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
    }

    (void)cbResult; /* For silencing a static analysis warning. */

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__jack(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_jack_client_t* pClient;
    ma_result result;
    const char** ppPorts;

    MA_ASSERT(pContext != NULL);

    if (pDeviceID != NULL && pDeviceID->jack != 0) {
        return MA_NO_DEVICE;   /* Don't know the device. */
    }

    /* Name / Description */
    if (deviceType == ma_device_type_playback) {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
    } else {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
    }

    /* Jack only uses default devices. */
    pDeviceInfo->isDefault = MA_TRUE;

    /* Jack only supports f32 and has a specific channel count and sample rate. */
    pDeviceInfo->nativeDataFormats[0].format = ma_format_f32;

    /* The channel count and sample rate can only be determined by opening the device. */
    result = ma_context_open_client__jack(pContext, &pClient);
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[JACK] Failed to open client.");
        return result;
    }

    pDeviceInfo->nativeDataFormats[0].sampleRate = ((ma_jack_get_sample_rate_proc)pContext->jack.jack_get_sample_rate)((ma_jack_client_t*)pClient);
    pDeviceInfo->nativeDataFormats[0].channels   = 0;

    ppPorts = ((ma_jack_get_ports_proc)pContext->jack.jack_get_ports)((ma_jack_client_t*)pClient, NULL, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsPhysical | ((deviceType == ma_device_type_playback) ? ma_JackPortIsInput : ma_JackPortIsOutput));
    if (ppPorts == NULL) {
        ((ma_jack_client_close_proc)pContext->jack.jack_client_close)((ma_jack_client_t*)pClient);
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[JACK] Failed to query physical ports.");
        return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
    }

    while (ppPorts[pDeviceInfo->nativeDataFormats[0].channels] != NULL) {
        pDeviceInfo->nativeDataFormats[0].channels += 1;
    }

    pDeviceInfo->nativeDataFormats[0].flags = 0;
    pDeviceInfo->nativeDataFormatCount = 1;

    ((ma_jack_free_proc)pContext->jack.jack_free)((void*)ppPorts);
    ((ma_jack_client_close_proc)pContext->jack.jack_client_close)((ma_jack_client_t*)pClient);

    (void)pContext;
    return MA_SUCCESS;
}


static ma_result ma_device_uninit__jack(ma_device* pDevice)
{
    ma_context* pContext;

    MA_ASSERT(pDevice != NULL);

    pContext = pDevice->pContext;
    MA_ASSERT(pContext != NULL);

    if (pDevice->jack.pClient != NULL) {
        ((ma_jack_client_close_proc)pContext->jack.jack_client_close)((ma_jack_client_t*)pDevice->jack.pClient);
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_free(pDevice->jack.pIntermediaryBufferCapture, &pDevice->pContext->allocationCallbacks);
        ma_free(pDevice->jack.ppPortsCapture, &pDevice->pContext->allocationCallbacks);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_free(pDevice->jack.pIntermediaryBufferPlayback, &pDevice->pContext->allocationCallbacks);
        ma_free(pDevice->jack.ppPortsPlayback, &pDevice->pContext->allocationCallbacks);
    }

    return MA_SUCCESS;
}

static void ma_device__jack_shutdown_callback(void* pUserData)
{
    /* JACK died. Stop the device. */
    ma_device* pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    ma_device_stop(pDevice);
}

static int ma_device__jack_buffer_size_callback(ma_jack_nframes_t frameCount, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        size_t newBufferSize = frameCount * (pDevice->capture.internalChannels * ma_get_bytes_per_sample(pDevice->capture.internalFormat));
        float* pNewBuffer = (float*)ma_calloc(newBufferSize, &pDevice->pContext->allocationCallbacks);
        if (pNewBuffer == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        ma_free(pDevice->jack.pIntermediaryBufferCapture, &pDevice->pContext->allocationCallbacks);

        pDevice->jack.pIntermediaryBufferCapture = pNewBuffer;
        pDevice->playback.internalPeriodSizeInFrames = frameCount;
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        size_t newBufferSize = frameCount * (pDevice->playback.internalChannels * ma_get_bytes_per_sample(pDevice->playback.internalFormat));
        float* pNewBuffer = (float*)ma_calloc(newBufferSize, &pDevice->pContext->allocationCallbacks);
        if (pNewBuffer == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        ma_free(pDevice->jack.pIntermediaryBufferPlayback, &pDevice->pContext->allocationCallbacks);

        pDevice->jack.pIntermediaryBufferPlayback = pNewBuffer;
        pDevice->playback.internalPeriodSizeInFrames = frameCount;
    }

    return 0;
}

static int ma_device__jack_process_callback(ma_jack_nframes_t frameCount, void* pUserData)
{
    ma_device* pDevice;
    ma_context* pContext;
    ma_uint32 iChannel;

    pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    pContext = pDevice->pContext;
    MA_ASSERT(pContext != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        /* Channels need to be interleaved. */
        for (iChannel = 0; iChannel < pDevice->capture.internalChannels; ++iChannel) {
            const float* pSrc = (const float*)((ma_jack_port_get_buffer_proc)pContext->jack.jack_port_get_buffer)((ma_jack_port_t*)pDevice->jack.ppPortsCapture[iChannel], frameCount);
            if (pSrc != NULL) {
                float* pDst = pDevice->jack.pIntermediaryBufferCapture + iChannel;
                ma_jack_nframes_t iFrame;
                for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                    *pDst = *pSrc;

                    pDst += pDevice->capture.internalChannels;
                    pSrc += 1;
                }
            }
        }

        ma_device_handle_backend_data_callback(pDevice, NULL, pDevice->jack.pIntermediaryBufferCapture, frameCount);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_device_handle_backend_data_callback(pDevice, pDevice->jack.pIntermediaryBufferPlayback, NULL, frameCount);

        /* Channels need to be deinterleaved. */
        for (iChannel = 0; iChannel < pDevice->playback.internalChannels; ++iChannel) {
            float* pDst = (float*)((ma_jack_port_get_buffer_proc)pContext->jack.jack_port_get_buffer)((ma_jack_port_t*)pDevice->jack.ppPortsPlayback[iChannel], frameCount);
            if (pDst != NULL) {
                const float* pSrc = pDevice->jack.pIntermediaryBufferPlayback + iChannel;
                ma_jack_nframes_t iFrame;
                for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                    *pDst = *pSrc;

                    pDst += 1;
                    pSrc += pDevice->playback.internalChannels;
                }
            }
        }
    }

    return 0;
}

static ma_result ma_device_init__jack(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;
    ma_uint32 periodSizeInFrames;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pDevice != NULL);

    if (pConfig->deviceType == ma_device_type_loopback) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Loopback mode not supported.");
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /* Only supporting default devices with JACK. */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->pDeviceID != NULL && pDescriptorPlayback->pDeviceID->jack != 0) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->pDeviceID  != NULL && pDescriptorCapture->pDeviceID->jack  != 0)) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Only default devices are supported.");
        return MA_NO_DEVICE;
    }

    /* No exclusive mode with the JACK backend. */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->shareMode == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->shareMode  == ma_share_mode_exclusive)) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Exclusive mode not supported.");
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    /* Open the client. */
    result = ma_context_open_client__jack(pDevice->pContext, (ma_jack_client_t**)&pDevice->jack.pClient);
    if (result != MA_SUCCESS) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to open client.");
        return result;
    }

    /* Callbacks. */
    if (((ma_jack_set_process_callback_proc)pDevice->pContext->jack.jack_set_process_callback)((ma_jack_client_t*)pDevice->jack.pClient, ma_device__jack_process_callback, pDevice) != 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to set process callback.");
        return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
    }
    if (((ma_jack_set_buffer_size_callback_proc)pDevice->pContext->jack.jack_set_buffer_size_callback)((ma_jack_client_t*)pDevice->jack.pClient, ma_device__jack_buffer_size_callback, pDevice) != 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to set buffer size callback.");
        return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
    }

    ((ma_jack_on_shutdown_proc)pDevice->pContext->jack.jack_on_shutdown)((ma_jack_client_t*)pDevice->jack.pClient, ma_device__jack_shutdown_callback, pDevice);


    /* The buffer size in frames can change. */
    periodSizeInFrames = ((ma_jack_get_buffer_size_proc)pDevice->pContext->jack.jack_get_buffer_size)((ma_jack_client_t*)pDevice->jack.pClient);

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_uint32 iPort;
        const char** ppPorts;

        pDescriptorCapture->format     = ma_format_f32;
        pDescriptorCapture->channels   = 0;
        pDescriptorCapture->sampleRate = ((ma_jack_get_sample_rate_proc)pDevice->pContext->jack.jack_get_sample_rate)((ma_jack_client_t*)pDevice->jack.pClient);
        ma_channel_map_init_standard(ma_standard_channel_map_alsa, pDescriptorCapture->channelMap, ma_countof(pDescriptorCapture->channelMap), pDescriptorCapture->channels);

        ppPorts = ((ma_jack_get_ports_proc)pDevice->pContext->jack.jack_get_ports)((ma_jack_client_t*)pDevice->jack.pClient, NULL, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsPhysical | ma_JackPortIsOutput);
        if (ppPorts == NULL) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to query physical ports.");
            return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
        }

        /* Need to count the number of ports first so we can allocate some memory. */
        while (ppPorts[pDescriptorCapture->channels] != NULL) {
            pDescriptorCapture->channels += 1;
        }

        pDevice->jack.ppPortsCapture = (ma_ptr*)ma_malloc(sizeof(*pDevice->jack.ppPortsCapture) * pDescriptorCapture->channels, &pDevice->pContext->allocationCallbacks);
        if (pDevice->jack.ppPortsCapture == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        for (iPort = 0; iPort < pDescriptorCapture->channels; iPort += 1) {
            char name[64];
            ma_strcpy_s(name, sizeof(name), "capture");
            ma_itoa_s((int)iPort, name+7, sizeof(name)-7, 10); /* 7 = length of "capture" */

            pDevice->jack.ppPortsCapture[iPort] = ((ma_jack_port_register_proc)pDevice->pContext->jack.jack_port_register)((ma_jack_client_t*)pDevice->jack.pClient, name, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsInput, 0);
            if (pDevice->jack.ppPortsCapture[iPort] == NULL) {
                ((ma_jack_free_proc)pDevice->pContext->jack.jack_free)((void*)ppPorts);
                ma_device_uninit__jack(pDevice);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to register ports.");
                return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
            }
        }

        ((ma_jack_free_proc)pDevice->pContext->jack.jack_free)((void*)ppPorts);

        pDescriptorCapture->periodSizeInFrames = periodSizeInFrames;
        pDescriptorCapture->periodCount        = 1; /* There's no notion of a period in JACK. Just set to 1. */

        pDevice->jack.pIntermediaryBufferCapture = (float*)ma_calloc(pDescriptorCapture->periodSizeInFrames * ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels), &pDevice->pContext->allocationCallbacks);
        if (pDevice->jack.pIntermediaryBufferCapture == NULL) {
            ma_device_uninit__jack(pDevice);
            return MA_OUT_OF_MEMORY;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_uint32 iPort;
        const char** ppPorts;

        pDescriptorPlayback->format     = ma_format_f32;
        pDescriptorPlayback->channels   = 0;
        pDescriptorPlayback->sampleRate = ((ma_jack_get_sample_rate_proc)pDevice->pContext->jack.jack_get_sample_rate)((ma_jack_client_t*)pDevice->jack.pClient);
        ma_channel_map_init_standard(ma_standard_channel_map_alsa, pDescriptorPlayback->channelMap, ma_countof(pDescriptorPlayback->channelMap), pDescriptorPlayback->channels);

        ppPorts = ((ma_jack_get_ports_proc)pDevice->pContext->jack.jack_get_ports)((ma_jack_client_t*)pDevice->jack.pClient, NULL, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsPhysical | ma_JackPortIsInput);
        if (ppPorts == NULL) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to query physical ports.");
            return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
        }

        /* Need to count the number of ports first so we can allocate some memory. */
        while (ppPorts[pDescriptorPlayback->channels] != NULL) {
            pDescriptorPlayback->channels += 1;
        }

        pDevice->jack.ppPortsPlayback = (ma_ptr*)ma_malloc(sizeof(*pDevice->jack.ppPortsPlayback) * pDescriptorPlayback->channels, &pDevice->pContext->allocationCallbacks);
        if (pDevice->jack.ppPortsPlayback == NULL) {
            ma_free(pDevice->jack.ppPortsCapture, &pDevice->pContext->allocationCallbacks);
            return MA_OUT_OF_MEMORY;
        }

        for (iPort = 0; iPort < pDescriptorPlayback->channels; iPort += 1) {
            char name[64];
            ma_strcpy_s(name, sizeof(name), "playback");
            ma_itoa_s((int)iPort, name+8, sizeof(name)-8, 10); /* 8 = length of "playback" */

            pDevice->jack.ppPortsPlayback[iPort] = ((ma_jack_port_register_proc)pDevice->pContext->jack.jack_port_register)((ma_jack_client_t*)pDevice->jack.pClient, name, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsOutput, 0);
            if (pDevice->jack.ppPortsPlayback[iPort] == NULL) {
                ((ma_jack_free_proc)pDevice->pContext->jack.jack_free)((void*)ppPorts);
                ma_device_uninit__jack(pDevice);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to register ports.");
                return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
            }
        }

        ((ma_jack_free_proc)pDevice->pContext->jack.jack_free)((void*)ppPorts);

        pDescriptorPlayback->periodSizeInFrames = periodSizeInFrames;
        pDescriptorPlayback->periodCount        = 1;   /* There's no notion of a period in JACK. Just set to 1. */

        pDevice->jack.pIntermediaryBufferPlayback = (float*)ma_calloc(pDescriptorPlayback->periodSizeInFrames * ma_get_bytes_per_frame(pDescriptorPlayback->format, pDescriptorPlayback->channels), &pDevice->pContext->allocationCallbacks);
        if (pDevice->jack.pIntermediaryBufferPlayback == NULL) {
            ma_device_uninit__jack(pDevice);
            return MA_OUT_OF_MEMORY;
        }
    }

    return MA_SUCCESS;
}


static ma_result ma_device_start__jack(ma_device* pDevice)
{
    ma_context* pContext = pDevice->pContext;
    int resultJACK;
    size_t i;

    resultJACK = ((ma_jack_activate_proc)pContext->jack.jack_activate)((ma_jack_client_t*)pDevice->jack.pClient);
    if (resultJACK != 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to activate the JACK client.");
        return MA_FAILED_TO_START_BACKEND_DEVICE;
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        const char** ppServerPorts = ((ma_jack_get_ports_proc)pContext->jack.jack_get_ports)((ma_jack_client_t*)pDevice->jack.pClient, NULL, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsPhysical | ma_JackPortIsOutput);
        if (ppServerPorts == NULL) {
            ((ma_jack_deactivate_proc)pContext->jack.jack_deactivate)((ma_jack_client_t*)pDevice->jack.pClient);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to retrieve physical ports.");
            return MA_ERROR;
        }

        for (i = 0; ppServerPorts[i] != NULL; ++i) {
            const char* pServerPort = ppServerPorts[i];
            const char* pClientPort = ((ma_jack_port_name_proc)pContext->jack.jack_port_name)((ma_jack_port_t*)pDevice->jack.ppPortsCapture[i]);

            resultJACK = ((ma_jack_connect_proc)pContext->jack.jack_connect)((ma_jack_client_t*)pDevice->jack.pClient, pServerPort, pClientPort);
            if (resultJACK != 0) {
                ((ma_jack_free_proc)pContext->jack.jack_free)((void*)ppServerPorts);
                ((ma_jack_deactivate_proc)pContext->jack.jack_deactivate)((ma_jack_client_t*)pDevice->jack.pClient);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to connect ports.");
                return MA_ERROR;
            }
        }

        ((ma_jack_free_proc)pContext->jack.jack_free)((void*)ppServerPorts);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        const char** ppServerPorts = ((ma_jack_get_ports_proc)pContext->jack.jack_get_ports)((ma_jack_client_t*)pDevice->jack.pClient, NULL, MA_JACK_DEFAULT_AUDIO_TYPE, ma_JackPortIsPhysical | ma_JackPortIsInput);
        if (ppServerPorts == NULL) {
            ((ma_jack_deactivate_proc)pContext->jack.jack_deactivate)((ma_jack_client_t*)pDevice->jack.pClient);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to retrieve physical ports.");
            return MA_ERROR;
        }

        for (i = 0; ppServerPorts[i] != NULL; ++i) {
            const char* pServerPort = ppServerPorts[i];
            const char* pClientPort = ((ma_jack_port_name_proc)pContext->jack.jack_port_name)((ma_jack_port_t*)pDevice->jack.ppPortsPlayback[i]);

            resultJACK = ((ma_jack_connect_proc)pContext->jack.jack_connect)((ma_jack_client_t*)pDevice->jack.pClient, pClientPort, pServerPort);
            if (resultJACK != 0) {
                ((ma_jack_free_proc)pContext->jack.jack_free)((void*)ppServerPorts);
                ((ma_jack_deactivate_proc)pContext->jack.jack_deactivate)((ma_jack_client_t*)pDevice->jack.pClient);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] Failed to connect ports.");
                return MA_ERROR;
            }
        }

        ((ma_jack_free_proc)pContext->jack.jack_free)((void*)ppServerPorts);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__jack(ma_device* pDevice)
{
    ma_context* pContext = pDevice->pContext;

    if (((ma_jack_deactivate_proc)pContext->jack.jack_deactivate)((ma_jack_client_t*)pDevice->jack.pClient) != 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[JACK] An error occurred when deactivating the JACK client.");
        return MA_ERROR;
    }

    ma_device__on_notification_stopped(pDevice);

    return MA_SUCCESS;
}


static ma_result ma_context_uninit__jack(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_jack);

    ma_free(pContext->jack.pClientName, &pContext->allocationCallbacks);
    pContext->jack.pClientName = NULL;

#ifndef MA_NO_RUNTIME_LINKING
    ma_dlclose(ma_context_get_log(pContext), pContext->jack.jackSO);
#endif

    return MA_SUCCESS;
}

static ma_result ma_context_init__jack(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
#ifndef MA_NO_RUNTIME_LINKING
    const char* libjackNames[] = {
#if defined(MA_WIN32)
        "libjack.dll",
        "libjack64.dll"
#endif
#if defined(MA_UNIX)
        "libjack.so",
        "libjack.so.0"
#endif
    };
    size_t i;

    for (i = 0; i < ma_countof(libjackNames); ++i) {
        pContext->jack.jackSO = ma_dlopen(ma_context_get_log(pContext), libjackNames[i]);
        if (pContext->jack.jackSO != NULL) {
            break;
        }
    }

    if (pContext->jack.jackSO == NULL) {
        return MA_NO_BACKEND;
    }

    pContext->jack.jack_client_open              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_client_open");
    pContext->jack.jack_client_close             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_client_close");
    pContext->jack.jack_client_name_size         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_client_name_size");
    pContext->jack.jack_set_process_callback     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_set_process_callback");
    pContext->jack.jack_set_buffer_size_callback = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_set_buffer_size_callback");
    pContext->jack.jack_on_shutdown              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_on_shutdown");
    pContext->jack.jack_get_sample_rate          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_get_sample_rate");
    pContext->jack.jack_get_buffer_size          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_get_buffer_size");
    pContext->jack.jack_get_ports                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_get_ports");
    pContext->jack.jack_activate                 = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_activate");
    pContext->jack.jack_deactivate               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_deactivate");
    pContext->jack.jack_connect                  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_connect");
    pContext->jack.jack_port_register            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_port_register");
    pContext->jack.jack_port_name                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_port_name");
    pContext->jack.jack_port_get_buffer          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_port_get_buffer");
    pContext->jack.jack_free                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->jack.jackSO, "jack_free");
#else
    /*
    This strange assignment system is here just to ensure type safety of miniaudio's function pointer
    types. If anything differs slightly the compiler should throw a warning.
    */
    ma_jack_client_open_proc              _jack_client_open              = jack_client_open;
    ma_jack_client_close_proc             _jack_client_close             = jack_client_close;
    ma_jack_client_name_size_proc         _jack_client_name_size         = jack_client_name_size;
    ma_jack_set_process_callback_proc     _jack_set_process_callback     = jack_set_process_callback;
    ma_jack_set_buffer_size_callback_proc _jack_set_buffer_size_callback = jack_set_buffer_size_callback;
    ma_jack_on_shutdown_proc              _jack_on_shutdown              = jack_on_shutdown;
    ma_jack_get_sample_rate_proc          _jack_get_sample_rate          = jack_get_sample_rate;
    ma_jack_get_buffer_size_proc          _jack_get_buffer_size          = jack_get_buffer_size;
    ma_jack_get_ports_proc                _jack_get_ports                = jack_get_ports;
    ma_jack_activate_proc                 _jack_activate                 = jack_activate;
    ma_jack_deactivate_proc               _jack_deactivate               = jack_deactivate;
    ma_jack_connect_proc                  _jack_connect                  = jack_connect;
    ma_jack_port_register_proc            _jack_port_register            = jack_port_register;
    ma_jack_port_name_proc                _jack_port_name                = jack_port_name;
    ma_jack_port_get_buffer_proc          _jack_port_get_buffer          = jack_port_get_buffer;
    ma_jack_free_proc                     _jack_free                     = jack_free;

    pContext->jack.jack_client_open              = (ma_proc)_jack_client_open;
    pContext->jack.jack_client_close             = (ma_proc)_jack_client_close;
    pContext->jack.jack_client_name_size         = (ma_proc)_jack_client_name_size;
    pContext->jack.jack_set_process_callback     = (ma_proc)_jack_set_process_callback;
    pContext->jack.jack_set_buffer_size_callback = (ma_proc)_jack_set_buffer_size_callback;
    pContext->jack.jack_on_shutdown              = (ma_proc)_jack_on_shutdown;
    pContext->jack.jack_get_sample_rate          = (ma_proc)_jack_get_sample_rate;
    pContext->jack.jack_get_buffer_size          = (ma_proc)_jack_get_buffer_size;
    pContext->jack.jack_get_ports                = (ma_proc)_jack_get_ports;
    pContext->jack.jack_activate                 = (ma_proc)_jack_activate;
    pContext->jack.jack_deactivate               = (ma_proc)_jack_deactivate;
    pContext->jack.jack_connect                  = (ma_proc)_jack_connect;
    pContext->jack.jack_port_register            = (ma_proc)_jack_port_register;
    pContext->jack.jack_port_name                = (ma_proc)_jack_port_name;
    pContext->jack.jack_port_get_buffer          = (ma_proc)_jack_port_get_buffer;
    pContext->jack.jack_free                     = (ma_proc)_jack_free;
#endif

    if (pConfig->jack.pClientName != NULL) {
        pContext->jack.pClientName = ma_copy_string(pConfig->jack.pClientName, &pContext->allocationCallbacks);
    }
    pContext->jack.tryStartServer = pConfig->jack.tryStartServer;

    /*
    Getting here means the JACK library is installed, but it doesn't necessarily mean it's usable. We need to quickly test this by connecting
    a temporary client.
    */
    {
        ma_jack_client_t* pDummyClient;
        ma_result result = ma_context_open_client__jack(pContext, &pDummyClient);
        if (result != MA_SUCCESS) {
            ma_free(pContext->jack.pClientName, &pContext->allocationCallbacks);
        #ifndef MA_NO_RUNTIME_LINKING
            ma_dlclose(ma_context_get_log(pContext), pContext->jack.jackSO);
        #endif
            return MA_NO_BACKEND;
        }

        ((ma_jack_client_close_proc)pContext->jack.jack_client_close)((ma_jack_client_t*)pDummyClient);
    }


    pCallbacks->onContextInit             = ma_context_init__jack;
    pCallbacks->onContextUninit           = ma_context_uninit__jack;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__jack;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__jack;
    pCallbacks->onDeviceInit              = ma_device_init__jack;
    pCallbacks->onDeviceUninit            = ma_device_uninit__jack;
    pCallbacks->onDeviceStart             = ma_device_start__jack;
    pCallbacks->onDeviceStop              = ma_device_stop__jack;
    pCallbacks->onDeviceRead              = NULL;   /* Not used because JACK is asynchronous. */
    pCallbacks->onDeviceWrite             = NULL;   /* Not used because JACK is asynchronous. */
    pCallbacks->onDeviceDataLoop          = NULL;   /* Not used because JACK is asynchronous. */

    return MA_SUCCESS;
}
#endif  /* MA_HAS_JACK */



/******************************************************************************

Core Audio Backend

References
==========
- Technical Note TN2091: Device input using the HAL Output Audio Unit
    https://developer.apple.com/library/archive/technotes/tn2091/_index.html

******************************************************************************/
#ifdef MA_HAS_COREAUDIO
#include <TargetConditionals.h>

#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE == 1
    #define MA_APPLE_MOBILE
    #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
        #define MA_APPLE_TV
    #endif
    #if defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
        #define MA_APPLE_WATCH
    #endif
    #if __has_feature(objc_arc)
        #define MA_BRIDGE_TRANSFER  __bridge_transfer
        #define MA_BRIDGE_RETAINED  __bridge_retained
    #else
        #define MA_BRIDGE_TRANSFER
        #define MA_BRIDGE_RETAINED
    #endif
#else
    #define MA_APPLE_DESKTOP
#endif

#if defined(MA_APPLE_DESKTOP)
#include <CoreAudio/CoreAudio.h>
#else
#include <AVFoundation/AVFoundation.h>
#endif

#include <AudioToolbox/AudioToolbox.h>

/* CoreFoundation */
typedef Boolean (* ma_CFStringGetCString_proc)(CFStringRef theString, char* buffer, CFIndex bufferSize, CFStringEncoding encoding);
typedef void (* ma_CFRelease_proc)(CFTypeRef cf);

/* CoreAudio */
#if defined(MA_APPLE_DESKTOP)
typedef OSStatus (* ma_AudioObjectGetPropertyData_proc)(AudioObjectID inObjectID, const AudioObjectPropertyAddress* inAddress, UInt32 inQualifierDataSize, const void* inQualifierData, UInt32* ioDataSize, void* outData);
typedef OSStatus (* ma_AudioObjectGetPropertyDataSize_proc)(AudioObjectID inObjectID, const AudioObjectPropertyAddress* inAddress, UInt32 inQualifierDataSize, const void* inQualifierData, UInt32* outDataSize);
typedef OSStatus (* ma_AudioObjectSetPropertyData_proc)(AudioObjectID inObjectID, const AudioObjectPropertyAddress* inAddress, UInt32 inQualifierDataSize, const void* inQualifierData, UInt32 inDataSize, const void* inData);
typedef OSStatus (* ma_AudioObjectAddPropertyListener_proc)(AudioObjectID inObjectID, const AudioObjectPropertyAddress* inAddress, AudioObjectPropertyListenerProc inListener, void* inClientData);
typedef OSStatus (* ma_AudioObjectRemovePropertyListener_proc)(AudioObjectID inObjectID, const AudioObjectPropertyAddress* inAddress, AudioObjectPropertyListenerProc inListener, void* inClientData);
#endif

/* AudioToolbox */
typedef AudioComponent (* ma_AudioComponentFindNext_proc)(AudioComponent inComponent, const AudioComponentDescription* inDesc);
typedef OSStatus (* ma_AudioComponentInstanceDispose_proc)(AudioComponentInstance inInstance);
typedef OSStatus (* ma_AudioComponentInstanceNew_proc)(AudioComponent inComponent, AudioComponentInstance* outInstance);
typedef OSStatus (* ma_AudioOutputUnitStart_proc)(AudioUnit inUnit);
typedef OSStatus (* ma_AudioOutputUnitStop_proc)(AudioUnit inUnit);
typedef OSStatus (* ma_AudioUnitAddPropertyListener_proc)(AudioUnit inUnit, AudioUnitPropertyID inID, AudioUnitPropertyListenerProc inProc, void* inProcUserData);
typedef OSStatus (* ma_AudioUnitGetPropertyInfo_proc)(AudioUnit inUnit, AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32* outDataSize, Boolean* outWriteable);
typedef OSStatus (* ma_AudioUnitGetProperty_proc)(AudioUnit inUnit, AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void* outData, UInt32* ioDataSize);
typedef OSStatus (* ma_AudioUnitSetProperty_proc)(AudioUnit inUnit, AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, const void* inData, UInt32 inDataSize);
typedef OSStatus (* ma_AudioUnitInitialize_proc)(AudioUnit inUnit);
typedef OSStatus (* ma_AudioUnitRender_proc)(AudioUnit inUnit, AudioUnitRenderActionFlags* ioActionFlags, const AudioTimeStamp* inTimeStamp, UInt32 inOutputBusNumber, UInt32 inNumberFrames, AudioBufferList* ioData);


#define MA_COREAUDIO_OUTPUT_BUS    0
#define MA_COREAUDIO_INPUT_BUS     1

#if defined(MA_APPLE_DESKTOP)
static ma_result ma_device_reinit_internal__coreaudio(ma_device* pDevice, ma_device_type deviceType, ma_bool32 disposePreviousAudioUnit);
#endif

/*
Core Audio

So far, Core Audio has been the worst backend to work with due to being both unintuitive and having almost no documentation
apart from comments in the headers (which admittedly are quite good). For my own purposes, and for anybody out there whose
needing to figure out how this darn thing works, I'm going to outline a few things here.

Since miniaudio is a fairly low-level API, one of the things it needs is control over specific devices, and it needs to be
able to identify whether or not it can be used as playback and/or capture. The AudioObject API is the only one I've seen
that supports this level of detail. There was some public domain sample code I stumbled across that used the AudioComponent
and AudioUnit APIs, but I couldn't see anything that gave low-level control over device selection and capabilities (the
distinction between playback and capture in particular). Therefore, miniaudio is using the AudioObject API.

Most (all?) functions in the AudioObject API take a AudioObjectID as its input. This is the device identifier. When
retrieving global information, such as the device list, you use kAudioObjectSystemObject. When retrieving device-specific
data, you pass in the ID for that device. In order to retrieve device-specific IDs you need to enumerate over each of the
devices. This is done using the AudioObjectGetPropertyDataSize() and AudioObjectGetPropertyData() APIs which seem to be
the central APIs for retrieving information about the system and specific devices.

To use the AudioObjectGetPropertyData() API you need to use the notion of a property address. A property address is a
structure with three variables and is used to identify which property you are getting or setting. The first is the "selector"
which is basically the specific property that you're wanting to retrieve or set. The second is the "scope", which is
typically set to kAudioObjectPropertyScopeGlobal, kAudioObjectPropertyScopeInput for input-specific properties and
kAudioObjectPropertyScopeOutput for output-specific properties. The last is the "element" which is always set to
kAudioObjectPropertyElementMain in miniaudio's case. I don't know of any cases where this would be set to anything different.

Back to the earlier issue of device retrieval, you first use the AudioObjectGetPropertyDataSize() API to retrieve the size
of the raw data which is just a list of AudioDeviceID's. You use the kAudioObjectSystemObject AudioObjectID, and a property
address with the kAudioHardwarePropertyDevices selector and the kAudioObjectPropertyScopeGlobal scope. Once you have the
size, allocate a block of memory of that size and then call AudioObjectGetPropertyData(). The data is just a list of
AudioDeviceID's so just do "dataSize/sizeof(AudioDeviceID)" to know the device count.
*/

#if defined(MA_APPLE_MOBILE)
static void ma_device__on_notification_interruption_began(ma_device* pDevice)
{
    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_began));
}

static void ma_device__on_notification_interruption_ended(ma_device* pDevice)
{
    ma_device__on_notification(ma_device_notification_init(pDevice, ma_device_notification_type_interruption_ended));
}
#endif

static ma_result ma_result_from_OSStatus(OSStatus status)
{
    switch (status)
    {
        case noErr:                                   return MA_SUCCESS;
    #if defined(MA_APPLE_DESKTOP)
        case kAudioHardwareNotRunningError:           return MA_DEVICE_NOT_STARTED;
        case kAudioHardwareUnspecifiedError:          return MA_ERROR;
        case kAudioHardwareUnknownPropertyError:      return MA_INVALID_ARGS;
        case kAudioHardwareBadPropertySizeError:      return MA_INVALID_OPERATION;
        case kAudioHardwareIllegalOperationError:     return MA_INVALID_OPERATION;
        case kAudioHardwareBadObjectError:            return MA_INVALID_ARGS;
        case kAudioHardwareBadDeviceError:            return MA_INVALID_ARGS;
        case kAudioHardwareBadStreamError:            return MA_INVALID_ARGS;
        case kAudioHardwareUnsupportedOperationError: return MA_INVALID_OPERATION;
        case kAudioDeviceUnsupportedFormatError:      return MA_FORMAT_NOT_SUPPORTED;
        case kAudioDevicePermissionsError:            return MA_ACCESS_DENIED;
    #endif
        default:                                      return MA_ERROR;
    }
}

#if 0
static ma_channel ma_channel_from_AudioChannelBitmap(AudioChannelBitmap bit)
{
    switch (bit)
    {
        case kAudioChannelBit_Left:                 return MA_CHANNEL_LEFT;
        case kAudioChannelBit_Right:                return MA_CHANNEL_RIGHT;
        case kAudioChannelBit_Center:               return MA_CHANNEL_FRONT_CENTER;
        case kAudioChannelBit_LFEScreen:            return MA_CHANNEL_LFE;
        case kAudioChannelBit_LeftSurround:         return MA_CHANNEL_BACK_LEFT;
        case kAudioChannelBit_RightSurround:        return MA_CHANNEL_BACK_RIGHT;
        case kAudioChannelBit_LeftCenter:           return MA_CHANNEL_FRONT_LEFT_CENTER;
        case kAudioChannelBit_RightCenter:          return MA_CHANNEL_FRONT_RIGHT_CENTER;
        case kAudioChannelBit_CenterSurround:       return MA_CHANNEL_BACK_CENTER;
        case kAudioChannelBit_LeftSurroundDirect:   return MA_CHANNEL_SIDE_LEFT;
        case kAudioChannelBit_RightSurroundDirect:  return MA_CHANNEL_SIDE_RIGHT;
        case kAudioChannelBit_TopCenterSurround:    return MA_CHANNEL_TOP_CENTER;
        case kAudioChannelBit_VerticalHeightLeft:   return MA_CHANNEL_TOP_FRONT_LEFT;
        case kAudioChannelBit_VerticalHeightCenter: return MA_CHANNEL_TOP_FRONT_CENTER;
        case kAudioChannelBit_VerticalHeightRight:  return MA_CHANNEL_TOP_FRONT_RIGHT;
        case kAudioChannelBit_TopBackLeft:          return MA_CHANNEL_TOP_BACK_LEFT;
        case kAudioChannelBit_TopBackCenter:        return MA_CHANNEL_TOP_BACK_CENTER;
        case kAudioChannelBit_TopBackRight:         return MA_CHANNEL_TOP_BACK_RIGHT;
        default:                                    return MA_CHANNEL_NONE;
    }
}
#endif

static ma_result ma_format_from_AudioStreamBasicDescription(const AudioStreamBasicDescription* pDescription, ma_format* pFormatOut)
{
    MA_ASSERT(pDescription != NULL);
    MA_ASSERT(pFormatOut != NULL);

    *pFormatOut = ma_format_unknown;   /* Safety. */

    /* There's a few things miniaudio doesn't support. */
    if (pDescription->mFormatID != kAudioFormatLinearPCM) {
        return MA_FORMAT_NOT_SUPPORTED;
    }

    /* We don't support any non-packed formats that are aligned high. */
    if ((pDescription->mFormatFlags & kLinearPCMFormatFlagIsAlignedHigh) != 0) {
        return MA_FORMAT_NOT_SUPPORTED;
    }

    /* Only supporting native-endian. */
    if ((ma_is_little_endian() && (pDescription->mFormatFlags & kAudioFormatFlagIsBigEndian) != 0) || (ma_is_big_endian() && (pDescription->mFormatFlags & kAudioFormatFlagIsBigEndian) == 0)) {
        return MA_FORMAT_NOT_SUPPORTED;
    }

    /* We are not currently supporting non-interleaved formats (this will be added in a future version of miniaudio). */
    /*if ((pDescription->mFormatFlags & kAudioFormatFlagIsNonInterleaved) != 0) {
        return MA_FORMAT_NOT_SUPPORTED;
    }*/

    if ((pDescription->mFormatFlags & kLinearPCMFormatFlagIsFloat) != 0) {
        if (pDescription->mBitsPerChannel == 32) {
            *pFormatOut = ma_format_f32;
            return MA_SUCCESS;
        }
    } else {
        if ((pDescription->mFormatFlags & kLinearPCMFormatFlagIsSignedInteger) != 0) {
            if (pDescription->mBitsPerChannel == 16) {
                *pFormatOut = ma_format_s16;
                return MA_SUCCESS;
            } else if (pDescription->mBitsPerChannel == 24) {
                if (pDescription->mBytesPerFrame == (pDescription->mBitsPerChannel/8 * pDescription->mChannelsPerFrame)) {
                    *pFormatOut = ma_format_s24;
                    return MA_SUCCESS;
                } else {
                    if (pDescription->mBytesPerFrame/pDescription->mChannelsPerFrame == sizeof(ma_int32)) {
                        /* TODO: Implement ma_format_s24_32. */
                        /**pFormatOut = ma_format_s24_32;*/
                        /*return MA_SUCCESS;*/
                        return MA_FORMAT_NOT_SUPPORTED;
                    }
                }
            } else if (pDescription->mBitsPerChannel == 32) {
                *pFormatOut = ma_format_s32;
                return MA_SUCCESS;
            }
        } else {
            if (pDescription->mBitsPerChannel == 8) {
                *pFormatOut = ma_format_u8;
                return MA_SUCCESS;
            }
        }
    }

    /* Getting here means the format is not supported. */
    return MA_FORMAT_NOT_SUPPORTED;
}

#if defined(MA_APPLE_DESKTOP)
static ma_channel ma_channel_from_AudioChannelLabel(AudioChannelLabel label)
{
    switch (label)
    {
        case kAudioChannelLabel_Unknown:              return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Unused:               return MA_CHANNEL_NONE;
        case kAudioChannelLabel_UseCoordinates:       return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Left:                 return MA_CHANNEL_LEFT;
        case kAudioChannelLabel_Right:                return MA_CHANNEL_RIGHT;
        case kAudioChannelLabel_Center:               return MA_CHANNEL_FRONT_CENTER;
        case kAudioChannelLabel_LFEScreen:            return MA_CHANNEL_LFE;
        case kAudioChannelLabel_LeftSurround:         return MA_CHANNEL_BACK_LEFT;
        case kAudioChannelLabel_RightSurround:        return MA_CHANNEL_BACK_RIGHT;
        case kAudioChannelLabel_LeftCenter:           return MA_CHANNEL_FRONT_LEFT_CENTER;
        case kAudioChannelLabel_RightCenter:          return MA_CHANNEL_FRONT_RIGHT_CENTER;
        case kAudioChannelLabel_CenterSurround:       return MA_CHANNEL_BACK_CENTER;
        case kAudioChannelLabel_LeftSurroundDirect:   return MA_CHANNEL_SIDE_LEFT;
        case kAudioChannelLabel_RightSurroundDirect:  return MA_CHANNEL_SIDE_RIGHT;
        case kAudioChannelLabel_TopCenterSurround:    return MA_CHANNEL_TOP_CENTER;
        case kAudioChannelLabel_VerticalHeightLeft:   return MA_CHANNEL_TOP_FRONT_LEFT;
        case kAudioChannelLabel_VerticalHeightCenter: return MA_CHANNEL_TOP_FRONT_CENTER;
        case kAudioChannelLabel_VerticalHeightRight:  return MA_CHANNEL_TOP_FRONT_RIGHT;
        case kAudioChannelLabel_TopBackLeft:          return MA_CHANNEL_TOP_BACK_LEFT;
        case kAudioChannelLabel_TopBackCenter:        return MA_CHANNEL_TOP_BACK_CENTER;
        case kAudioChannelLabel_TopBackRight:         return MA_CHANNEL_TOP_BACK_RIGHT;
        case kAudioChannelLabel_RearSurroundLeft:     return MA_CHANNEL_BACK_LEFT;
        case kAudioChannelLabel_RearSurroundRight:    return MA_CHANNEL_BACK_RIGHT;
        case kAudioChannelLabel_LeftWide:             return MA_CHANNEL_SIDE_LEFT;
        case kAudioChannelLabel_RightWide:            return MA_CHANNEL_SIDE_RIGHT;
        case kAudioChannelLabel_LFE2:                 return MA_CHANNEL_LFE;
        case kAudioChannelLabel_LeftTotal:            return MA_CHANNEL_LEFT;
        case kAudioChannelLabel_RightTotal:           return MA_CHANNEL_RIGHT;
        case kAudioChannelLabel_HearingImpaired:      return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Narration:            return MA_CHANNEL_MONO;
        case kAudioChannelLabel_Mono:                 return MA_CHANNEL_MONO;
        case kAudioChannelLabel_DialogCentricMix:     return MA_CHANNEL_MONO;
        case kAudioChannelLabel_CenterSurroundDirect: return MA_CHANNEL_BACK_CENTER;
        case kAudioChannelLabel_Haptic:               return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Ambisonic_W:          return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Ambisonic_X:          return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Ambisonic_Y:          return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Ambisonic_Z:          return MA_CHANNEL_NONE;
        case kAudioChannelLabel_MS_Mid:               return MA_CHANNEL_LEFT;
        case kAudioChannelLabel_MS_Side:              return MA_CHANNEL_RIGHT;
        case kAudioChannelLabel_XY_X:                 return MA_CHANNEL_LEFT;
        case kAudioChannelLabel_XY_Y:                 return MA_CHANNEL_RIGHT;
        case kAudioChannelLabel_HeadphonesLeft:       return MA_CHANNEL_LEFT;
        case kAudioChannelLabel_HeadphonesRight:      return MA_CHANNEL_RIGHT;
        case kAudioChannelLabel_ClickTrack:           return MA_CHANNEL_NONE;
        case kAudioChannelLabel_ForeignLanguage:      return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Discrete:             return MA_CHANNEL_NONE;
        case kAudioChannelLabel_Discrete_0:           return MA_CHANNEL_AUX_0;
        case kAudioChannelLabel_Discrete_1:           return MA_CHANNEL_AUX_1;
        case kAudioChannelLabel_Discrete_2:           return MA_CHANNEL_AUX_2;
        case kAudioChannelLabel_Discrete_3:           return MA_CHANNEL_AUX_3;
        case kAudioChannelLabel_Discrete_4:           return MA_CHANNEL_AUX_4;
        case kAudioChannelLabel_Discrete_5:           return MA_CHANNEL_AUX_5;
        case kAudioChannelLabel_Discrete_6:           return MA_CHANNEL_AUX_6;
        case kAudioChannelLabel_Discrete_7:           return MA_CHANNEL_AUX_7;
        case kAudioChannelLabel_Discrete_8:           return MA_CHANNEL_AUX_8;
        case kAudioChannelLabel_Discrete_9:           return MA_CHANNEL_AUX_9;
        case kAudioChannelLabel_Discrete_10:          return MA_CHANNEL_AUX_10;
        case kAudioChannelLabel_Discrete_11:          return MA_CHANNEL_AUX_11;
        case kAudioChannelLabel_Discrete_12:          return MA_CHANNEL_AUX_12;
        case kAudioChannelLabel_Discrete_13:          return MA_CHANNEL_AUX_13;
        case kAudioChannelLabel_Discrete_14:          return MA_CHANNEL_AUX_14;
        case kAudioChannelLabel_Discrete_15:          return MA_CHANNEL_AUX_15;
        case kAudioChannelLabel_Discrete_65535:       return MA_CHANNEL_NONE;

    #if 0   /* Introduced in a later version of macOS. */
        case kAudioChannelLabel_HOA_ACN:              return MA_CHANNEL_NONE;
        case kAudioChannelLabel_HOA_ACN_0:            return MA_CHANNEL_AUX_0;
        case kAudioChannelLabel_HOA_ACN_1:            return MA_CHANNEL_AUX_1;
        case kAudioChannelLabel_HOA_ACN_2:            return MA_CHANNEL_AUX_2;
        case kAudioChannelLabel_HOA_ACN_3:            return MA_CHANNEL_AUX_3;
        case kAudioChannelLabel_HOA_ACN_4:            return MA_CHANNEL_AUX_4;
        case kAudioChannelLabel_HOA_ACN_5:            return MA_CHANNEL_AUX_5;
        case kAudioChannelLabel_HOA_ACN_6:            return MA_CHANNEL_AUX_6;
        case kAudioChannelLabel_HOA_ACN_7:            return MA_CHANNEL_AUX_7;
        case kAudioChannelLabel_HOA_ACN_8:            return MA_CHANNEL_AUX_8;
        case kAudioChannelLabel_HOA_ACN_9:            return MA_CHANNEL_AUX_9;
        case kAudioChannelLabel_HOA_ACN_10:           return MA_CHANNEL_AUX_10;
        case kAudioChannelLabel_HOA_ACN_11:           return MA_CHANNEL_AUX_11;
        case kAudioChannelLabel_HOA_ACN_12:           return MA_CHANNEL_AUX_12;
        case kAudioChannelLabel_HOA_ACN_13:           return MA_CHANNEL_AUX_13;
        case kAudioChannelLabel_HOA_ACN_14:           return MA_CHANNEL_AUX_14;
        case kAudioChannelLabel_HOA_ACN_15:           return MA_CHANNEL_AUX_15;
        case kAudioChannelLabel_HOA_ACN_65024:        return MA_CHANNEL_NONE;
    #endif

        default:                                      return MA_CHANNEL_NONE;
    }
}

static ma_result ma_get_channel_map_from_AudioChannelLayout(AudioChannelLayout* pChannelLayout, ma_channel* pChannelMap, size_t channelMapCap)
{
    MA_ASSERT(pChannelLayout != NULL);

    if (pChannelLayout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelDescriptions) {
        UInt32 iChannel;
        for (iChannel = 0; iChannel < pChannelLayout->mNumberChannelDescriptions && iChannel < channelMapCap; ++iChannel) {
            pChannelMap[iChannel] = ma_channel_from_AudioChannelLabel(pChannelLayout->mChannelDescriptions[iChannel].mChannelLabel);
        }
    } else
#if 0
    if (pChannelLayout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelBitmap) {
        /* This is the same kind of system that's used by Windows audio APIs. */
        UInt32 iChannel = 0;
        UInt32 iBit;
        AudioChannelBitmap bitmap = pChannelLayout->mChannelBitmap;
        for (iBit = 0; iBit < 32 && iChannel < channelMapCap; ++iBit) {
            AudioChannelBitmap bit = bitmap & (1 << iBit);
            if (bit != 0) {
                pChannelMap[iChannel++] = ma_channel_from_AudioChannelBit(bit);
            }
        }
    } else
#endif
    {
        /*
        Need to use the tag to determine the channel map. For now I'm just assuming a default channel map, but later on this should
        be updated to determine the mapping based on the tag.
        */
        UInt32 channelCount;

        /* Our channel map retrieval APIs below take 32-bit integers, so we'll want to clamp the channel map capacity. */
        if (channelMapCap > 0xFFFFFFFF) {
            channelMapCap = 0xFFFFFFFF;
        }

        channelCount = ma_min(AudioChannelLayoutTag_GetNumberOfChannels(pChannelLayout->mChannelLayoutTag), (UInt32)channelMapCap);

        switch (pChannelLayout->mChannelLayoutTag)
        {
            case kAudioChannelLayoutTag_Mono:
            case kAudioChannelLayoutTag_Stereo:
            case kAudioChannelLayoutTag_StereoHeadphones:
            case kAudioChannelLayoutTag_MatrixStereo:
            case kAudioChannelLayoutTag_MidSide:
            case kAudioChannelLayoutTag_XY:
            case kAudioChannelLayoutTag_Binaural:
            case kAudioChannelLayoutTag_Ambisonic_B_Format:
            {
                ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, channelCount);
            } break;

            case kAudioChannelLayoutTag_Octagonal:
            {
                pChannelMap[7] = MA_CHANNEL_SIDE_RIGHT;
                pChannelMap[6] = MA_CHANNEL_SIDE_LEFT;
            } MA_FALLTHROUGH; /* Intentional fallthrough. */
            case kAudioChannelLayoutTag_Hexagonal:
            {
                pChannelMap[5] = MA_CHANNEL_BACK_CENTER;
            } MA_FALLTHROUGH; /* Intentional fallthrough. */
            case kAudioChannelLayoutTag_Pentagonal:
            {
                pChannelMap[4] = MA_CHANNEL_FRONT_CENTER;
            } MA_FALLTHROUGH; /* Intentional fallthrough. */
            case kAudioChannelLayoutTag_Quadraphonic:
            {
                pChannelMap[3] = MA_CHANNEL_BACK_RIGHT;
                pChannelMap[2] = MA_CHANNEL_BACK_LEFT;
                pChannelMap[1] = MA_CHANNEL_RIGHT;
                pChannelMap[0] = MA_CHANNEL_LEFT;
            } break;

            /* TODO: Add support for more tags here. */

            default:
            {
                ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, channelCount);
            } break;
        }
    }

    return MA_SUCCESS;
}

#if (defined(MAC_OS_VERSION_12_0) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_VERSION_12_0) || \
    (defined(__IPHONE_15_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_15_0)
#define AUDIO_OBJECT_PROPERTY_ELEMENT kAudioObjectPropertyElementMain
#else
/* kAudioObjectPropertyElementMaster is deprecated. */
#define AUDIO_OBJECT_PROPERTY_ELEMENT kAudioObjectPropertyElementMaster
#endif

/* kAudioDevicePropertyScope* were renamed to kAudioObjectPropertyScope* in 10.8. */
#if !defined(MAC_OS_X_VERSION_10_8) || (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_8)
#define kAudioObjectPropertyScopeInput kAudioDevicePropertyScopeInput
#define kAudioObjectPropertyScopeOutput kAudioDevicePropertyScopeOutput
#endif

static ma_result ma_get_device_object_ids__coreaudio(ma_context* pContext, UInt32* pDeviceCount, AudioObjectID** ppDeviceObjectIDs) /* NOTE: Free the returned buffer with ma_free(). */
{
    AudioObjectPropertyAddress propAddressDevices;
    UInt32 deviceObjectsDataSize;
    OSStatus status;
    AudioObjectID* pDeviceObjectIDs;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pDeviceCount != NULL);
    MA_ASSERT(ppDeviceObjectIDs != NULL);

    /* Safety. */
    *pDeviceCount = 0;
    *ppDeviceObjectIDs = NULL;

    propAddressDevices.mSelector = kAudioHardwarePropertyDevices;
    propAddressDevices.mScope    = kAudioObjectPropertyScopeGlobal;
    propAddressDevices.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    status = ((ma_AudioObjectGetPropertyDataSize_proc)pContext->coreaudio.AudioObjectGetPropertyDataSize)(kAudioObjectSystemObject, &propAddressDevices, 0, NULL, &deviceObjectsDataSize);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    pDeviceObjectIDs = (AudioObjectID*)ma_malloc(deviceObjectsDataSize, &pContext->allocationCallbacks);
    if (pDeviceObjectIDs == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(kAudioObjectSystemObject, &propAddressDevices, 0, NULL, &deviceObjectsDataSize, pDeviceObjectIDs);
    if (status != noErr) {
        ma_free(pDeviceObjectIDs, &pContext->allocationCallbacks);
        return ma_result_from_OSStatus(status);
    }

    *pDeviceCount = deviceObjectsDataSize / sizeof(AudioObjectID);
    *ppDeviceObjectIDs = pDeviceObjectIDs;

    return MA_SUCCESS;
}

static ma_result ma_get_AudioObject_uid_as_CFStringRef(ma_context* pContext, AudioObjectID objectID, CFStringRef* pUID)
{
    AudioObjectPropertyAddress propAddress;
    UInt32 dataSize;
    OSStatus status;

    MA_ASSERT(pContext != NULL);

    propAddress.mSelector = kAudioDevicePropertyDeviceUID;
    propAddress.mScope    = kAudioObjectPropertyScopeGlobal;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    dataSize = sizeof(*pUID);
    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(objectID, &propAddress, 0, NULL, &dataSize, pUID);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    return MA_SUCCESS;
}

static ma_result ma_get_AudioObject_uid(ma_context* pContext, AudioObjectID objectID, size_t bufferSize, char* bufferOut)
{
    CFStringRef uid;
    ma_result result;

    MA_ASSERT(pContext != NULL);

    result = ma_get_AudioObject_uid_as_CFStringRef(pContext, objectID, &uid);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (!((ma_CFStringGetCString_proc)pContext->coreaudio.CFStringGetCString)(uid, bufferOut, bufferSize, kCFStringEncodingUTF8)) {
        return MA_ERROR;
    }

    ((ma_CFRelease_proc)pContext->coreaudio.CFRelease)(uid);
    return MA_SUCCESS;
}

static ma_result ma_get_AudioObject_name(ma_context* pContext, AudioObjectID objectID, size_t bufferSize, char* bufferOut)
{
    AudioObjectPropertyAddress propAddress;
    CFStringRef deviceName = NULL;
    UInt32 dataSize;
    OSStatus status;

    MA_ASSERT(pContext != NULL);

    propAddress.mSelector = kAudioDevicePropertyDeviceNameCFString;
    propAddress.mScope    = kAudioObjectPropertyScopeGlobal;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    dataSize = sizeof(deviceName);
    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(objectID, &propAddress, 0, NULL, &dataSize, &deviceName);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    if (!((ma_CFStringGetCString_proc)pContext->coreaudio.CFStringGetCString)(deviceName, bufferOut, bufferSize, kCFStringEncodingUTF8)) {
        return MA_ERROR;
    }

    ((ma_CFRelease_proc)pContext->coreaudio.CFRelease)(deviceName);
    return MA_SUCCESS;
}

static ma_bool32 ma_does_AudioObject_support_scope(ma_context* pContext, AudioObjectID deviceObjectID, AudioObjectPropertyScope scope)
{
    AudioObjectPropertyAddress propAddress;
    UInt32 dataSize;
    OSStatus status;
    AudioBufferList* pBufferList;
    ma_bool32 isSupported;

    MA_ASSERT(pContext != NULL);

    /* To know whether or not a device is an input device we need ot look at the stream configuration. If it has an output channel it's a playback device. */
    propAddress.mSelector = kAudioDevicePropertyStreamConfiguration;
    propAddress.mScope    = scope;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    status = ((ma_AudioObjectGetPropertyDataSize_proc)pContext->coreaudio.AudioObjectGetPropertyDataSize)(deviceObjectID, &propAddress, 0, NULL, &dataSize);
    if (status != noErr) {
        return MA_FALSE;
    }

    pBufferList = (AudioBufferList*)ma_malloc(dataSize, &pContext->allocationCallbacks);
    if (pBufferList == NULL) {
        return MA_FALSE;   /* Out of memory. */
    }

    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(deviceObjectID, &propAddress, 0, NULL, &dataSize, pBufferList);
    if (status != noErr) {
        ma_free(pBufferList, &pContext->allocationCallbacks);
        return MA_FALSE;
    }

    isSupported = MA_FALSE;
    if (pBufferList->mNumberBuffers > 0) {
        isSupported = MA_TRUE;
    }

    ma_free(pBufferList, &pContext->allocationCallbacks);
    return isSupported;
}

static ma_bool32 ma_does_AudioObject_support_playback(ma_context* pContext, AudioObjectID deviceObjectID)
{
    return ma_does_AudioObject_support_scope(pContext, deviceObjectID, kAudioObjectPropertyScopeOutput);
}

static ma_bool32 ma_does_AudioObject_support_capture(ma_context* pContext, AudioObjectID deviceObjectID)
{
    return ma_does_AudioObject_support_scope(pContext, deviceObjectID, kAudioObjectPropertyScopeInput);
}


static ma_result ma_get_AudioObject_stream_descriptions(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, UInt32* pDescriptionCount, AudioStreamRangedDescription** ppDescriptions) /* NOTE: Free the returned pointer with ma_free(). */
{
    AudioObjectPropertyAddress propAddress;
    UInt32 dataSize;
    OSStatus status;
    AudioStreamRangedDescription* pDescriptions;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pDescriptionCount != NULL);
    MA_ASSERT(ppDescriptions != NULL);

    /*
    TODO: Experiment with kAudioStreamPropertyAvailablePhysicalFormats instead of (or in addition to) kAudioStreamPropertyAvailableVirtualFormats. My
          MacBook Pro uses s24/32 format, however, which miniaudio does not currently support.
    */
    propAddress.mSelector = kAudioStreamPropertyAvailableVirtualFormats; /*kAudioStreamPropertyAvailablePhysicalFormats;*/
    propAddress.mScope    = (deviceType == ma_device_type_playback) ? kAudioObjectPropertyScopeOutput : kAudioObjectPropertyScopeInput;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    status = ((ma_AudioObjectGetPropertyDataSize_proc)pContext->coreaudio.AudioObjectGetPropertyDataSize)(deviceObjectID, &propAddress, 0, NULL, &dataSize);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    pDescriptions = (AudioStreamRangedDescription*)ma_malloc(dataSize, &pContext->allocationCallbacks);
    if (pDescriptions == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(deviceObjectID, &propAddress, 0, NULL, &dataSize, pDescriptions);
    if (status != noErr) {
        ma_free(pDescriptions, &pContext->allocationCallbacks);
        return ma_result_from_OSStatus(status);
    }

    *pDescriptionCount = dataSize / sizeof(*pDescriptions);
    *ppDescriptions = pDescriptions;
    return MA_SUCCESS;
}


static ma_result ma_get_AudioObject_channel_layout(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, AudioChannelLayout** ppChannelLayout)   /* NOTE: Free the returned pointer with ma_free(). */
{
    AudioObjectPropertyAddress propAddress;
    UInt32 dataSize;
    OSStatus status;
    AudioChannelLayout* pChannelLayout;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(ppChannelLayout != NULL);

    *ppChannelLayout = NULL;    /* Safety. */

    propAddress.mSelector = kAudioDevicePropertyPreferredChannelLayout;
    propAddress.mScope    = (deviceType == ma_device_type_playback) ? kAudioObjectPropertyScopeOutput : kAudioObjectPropertyScopeInput;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    status = ((ma_AudioObjectGetPropertyDataSize_proc)pContext->coreaudio.AudioObjectGetPropertyDataSize)(deviceObjectID, &propAddress, 0, NULL, &dataSize);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    pChannelLayout = (AudioChannelLayout*)ma_malloc(dataSize, &pContext->allocationCallbacks);
    if (pChannelLayout == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(deviceObjectID, &propAddress, 0, NULL, &dataSize, pChannelLayout);
    if (status != noErr) {
        ma_free(pChannelLayout, &pContext->allocationCallbacks);
        return ma_result_from_OSStatus(status);
    }

    *ppChannelLayout = pChannelLayout;
    return MA_SUCCESS;
}

static ma_result ma_get_AudioObject_channel_count(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, ma_uint32* pChannelCount)
{
    AudioChannelLayout* pChannelLayout;
    ma_result result;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pChannelCount != NULL);

    *pChannelCount = 0; /* Safety. */

    result = ma_get_AudioObject_channel_layout(pContext, deviceObjectID, deviceType, &pChannelLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pChannelLayout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelDescriptions) {
        *pChannelCount = pChannelLayout->mNumberChannelDescriptions;
    } else if (pChannelLayout->mChannelLayoutTag == kAudioChannelLayoutTag_UseChannelBitmap) {
        *pChannelCount = ma_count_set_bits(pChannelLayout->mChannelBitmap);
    } else {
        *pChannelCount = AudioChannelLayoutTag_GetNumberOfChannels(pChannelLayout->mChannelLayoutTag);
    }

    ma_free(pChannelLayout, &pContext->allocationCallbacks);
    return MA_SUCCESS;
}

#if 0
static ma_result ma_get_AudioObject_channel_map(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, ma_channel* pChannelMap, size_t channelMapCap)
{
    AudioChannelLayout* pChannelLayout;
    ma_result result;

    MA_ASSERT(pContext != NULL);

    result = ma_get_AudioObject_channel_layout(pContext, deviceObjectID, deviceType, &pChannelLayout);
    if (result != MA_SUCCESS) {
        return result;  /* Rather than always failing here, would it be more robust to simply assume a default? */
    }

    result = ma_get_channel_map_from_AudioChannelLayout(pChannelLayout, pChannelMap, channelMapCap);
    if (result != MA_SUCCESS) {
        ma_free(pChannelLayout, &pContext->allocationCallbacks);
        return result;
    }

    ma_free(pChannelLayout, &pContext->allocationCallbacks);
    return result;
}
#endif

static ma_result ma_get_AudioObject_sample_rates(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, UInt32* pSampleRateRangesCount, AudioValueRange** ppSampleRateRanges)   /* NOTE: Free the returned pointer with ma_free(). */
{
    AudioObjectPropertyAddress propAddress;
    UInt32 dataSize;
    OSStatus status;
    AudioValueRange* pSampleRateRanges;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pSampleRateRangesCount != NULL);
    MA_ASSERT(ppSampleRateRanges != NULL);

    /* Safety. */
    *pSampleRateRangesCount = 0;
    *ppSampleRateRanges = NULL;

    propAddress.mSelector = kAudioDevicePropertyAvailableNominalSampleRates;
    propAddress.mScope    = (deviceType == ma_device_type_playback) ? kAudioObjectPropertyScopeOutput : kAudioObjectPropertyScopeInput;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    status = ((ma_AudioObjectGetPropertyDataSize_proc)pContext->coreaudio.AudioObjectGetPropertyDataSize)(deviceObjectID, &propAddress, 0, NULL, &dataSize);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    pSampleRateRanges = (AudioValueRange*)ma_malloc(dataSize, &pContext->allocationCallbacks);
    if (pSampleRateRanges == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(deviceObjectID, &propAddress, 0, NULL, &dataSize, pSampleRateRanges);
    if (status != noErr) {
        ma_free(pSampleRateRanges, &pContext->allocationCallbacks);
        return ma_result_from_OSStatus(status);
    }

    *pSampleRateRangesCount = dataSize / sizeof(*pSampleRateRanges);
    *ppSampleRateRanges = pSampleRateRanges;
    return MA_SUCCESS;
}

#if 0
static ma_result ma_get_AudioObject_get_closest_sample_rate(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, ma_uint32 sampleRateIn, ma_uint32* pSampleRateOut)
{
    UInt32 sampleRateRangeCount;
    AudioValueRange* pSampleRateRanges;
    ma_result result;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pSampleRateOut != NULL);

    *pSampleRateOut = 0;    /* Safety. */

    result = ma_get_AudioObject_sample_rates(pContext, deviceObjectID, deviceType, &sampleRateRangeCount, &pSampleRateRanges);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (sampleRateRangeCount == 0) {
        ma_free(pSampleRateRanges, &pContext->allocationCallbacks);
        return MA_ERROR;   /* Should never hit this case should we? */
    }

    if (sampleRateIn == 0) {
        /* Search in order of miniaudio's preferred priority. */
        UInt32 iMALSampleRate;
        for (iMALSampleRate = 0; iMALSampleRate < ma_countof(g_maStandardSampleRatePriorities); ++iMALSampleRate) {
            ma_uint32 malSampleRate = g_maStandardSampleRatePriorities[iMALSampleRate];
            UInt32 iCASampleRate;
            for (iCASampleRate = 0; iCASampleRate < sampleRateRangeCount; ++iCASampleRate) {
                AudioValueRange caSampleRate = pSampleRateRanges[iCASampleRate];
                if (caSampleRate.mMinimum <= malSampleRate && caSampleRate.mMaximum >= malSampleRate) {
                    *pSampleRateOut = malSampleRate;
                    ma_free(pSampleRateRanges, &pContext->allocationCallbacks);
                    return MA_SUCCESS;
                }
            }
        }

        /*
        If we get here it means none of miniaudio's standard sample rates matched any of the supported sample rates from the device. In this
        case we just fall back to the first one reported by Core Audio.
        */
        MA_ASSERT(sampleRateRangeCount > 0);

        *pSampleRateOut = pSampleRateRanges[0].mMinimum;
        ma_free(pSampleRateRanges, &pContext->allocationCallbacks);
        return MA_SUCCESS;
    } else {
        /* Find the closest match to this sample rate. */
        UInt32 currentAbsoluteDifference = INT32_MAX;
        UInt32 iCurrentClosestRange = (UInt32)-1;
        UInt32 iRange;
        for (iRange = 0; iRange < sampleRateRangeCount; ++iRange) {
            if (pSampleRateRanges[iRange].mMinimum <= sampleRateIn && pSampleRateRanges[iRange].mMaximum >= sampleRateIn) {
                *pSampleRateOut = sampleRateIn;
                ma_free(pSampleRateRanges, &pContext->allocationCallbacks);
                return MA_SUCCESS;
            } else {
                UInt32 absoluteDifference;
                if (pSampleRateRanges[iRange].mMinimum > sampleRateIn) {
                    absoluteDifference = pSampleRateRanges[iRange].mMinimum - sampleRateIn;
                } else {
                    absoluteDifference = sampleRateIn - pSampleRateRanges[iRange].mMaximum;
                }

                if (currentAbsoluteDifference > absoluteDifference) {
                    currentAbsoluteDifference = absoluteDifference;
                    iCurrentClosestRange = iRange;
                }
            }
        }

        MA_ASSERT(iCurrentClosestRange != (UInt32)-1);

        *pSampleRateOut = pSampleRateRanges[iCurrentClosestRange].mMinimum;
        ma_free(pSampleRateRanges, &pContext->allocationCallbacks);
        return MA_SUCCESS;
    }

    /* Should never get here, but it would mean we weren't able to find any suitable sample rates. */
    /*ma_free(pSampleRateRanges, &pContext->allocationCallbacks);*/
    /*return MA_ERROR;*/
}
#endif

static ma_result ma_get_AudioObject_closest_buffer_size_in_frames(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, ma_uint32 bufferSizeInFramesIn, ma_uint32* pBufferSizeInFramesOut)
{
    AudioObjectPropertyAddress propAddress;
    AudioValueRange bufferSizeRange;
    UInt32 dataSize;
    OSStatus status;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pBufferSizeInFramesOut != NULL);

    *pBufferSizeInFramesOut = 0;    /* Safety. */

    propAddress.mSelector = kAudioDevicePropertyBufferFrameSizeRange;
    propAddress.mScope    = (deviceType == ma_device_type_playback) ? kAudioObjectPropertyScopeOutput : kAudioObjectPropertyScopeInput;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    dataSize = sizeof(bufferSizeRange);
    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(deviceObjectID, &propAddress, 0, NULL, &dataSize, &bufferSizeRange);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    /* This is just a clamp. */
    if (bufferSizeInFramesIn < bufferSizeRange.mMinimum) {
        *pBufferSizeInFramesOut = (ma_uint32)bufferSizeRange.mMinimum;
    } else if (bufferSizeInFramesIn > bufferSizeRange.mMaximum) {
        *pBufferSizeInFramesOut = (ma_uint32)bufferSizeRange.mMaximum;
    } else {
        *pBufferSizeInFramesOut = bufferSizeInFramesIn;
    }

    return MA_SUCCESS;
}

static ma_result ma_set_AudioObject_buffer_size_in_frames(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, ma_uint32* pPeriodSizeInOut)
{
    ma_result result;
    ma_uint32 chosenBufferSizeInFrames;
    AudioObjectPropertyAddress propAddress;
    UInt32 dataSize;
    OSStatus status;

    MA_ASSERT(pContext != NULL);

    result = ma_get_AudioObject_closest_buffer_size_in_frames(pContext, deviceObjectID, deviceType, *pPeriodSizeInOut, &chosenBufferSizeInFrames);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Try setting the size of the buffer... If this fails we just use whatever is currently set. */
    propAddress.mSelector = kAudioDevicePropertyBufferFrameSize;
    propAddress.mScope    = (deviceType == ma_device_type_playback) ? kAudioObjectPropertyScopeOutput : kAudioObjectPropertyScopeInput;
    propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

    ((ma_AudioObjectSetPropertyData_proc)pContext->coreaudio.AudioObjectSetPropertyData)(deviceObjectID, &propAddress, 0, NULL, sizeof(chosenBufferSizeInFrames), &chosenBufferSizeInFrames);

    /* Get the actual size of the buffer. */
    dataSize = sizeof(*pPeriodSizeInOut);
    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(deviceObjectID, &propAddress, 0, NULL, &dataSize, &chosenBufferSizeInFrames);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    *pPeriodSizeInOut = chosenBufferSizeInFrames;
    return MA_SUCCESS;
}

static ma_result ma_find_default_AudioObjectID(ma_context* pContext, ma_device_type deviceType, AudioObjectID* pDeviceObjectID)
{
    AudioObjectPropertyAddress propAddressDefaultDevice;
    UInt32 defaultDeviceObjectIDSize = sizeof(AudioObjectID);
    AudioObjectID defaultDeviceObjectID;
    OSStatus status;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pDeviceObjectID != NULL);

    /* Safety. */
    *pDeviceObjectID = 0;

    propAddressDefaultDevice.mScope = kAudioObjectPropertyScopeGlobal;
    propAddressDefaultDevice.mElement = AUDIO_OBJECT_PROPERTY_ELEMENT;
    if (deviceType == ma_device_type_playback) {
        propAddressDefaultDevice.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
    } else {
        propAddressDefaultDevice.mSelector = kAudioHardwarePropertyDefaultInputDevice;
    }

    defaultDeviceObjectIDSize = sizeof(AudioObjectID);
    status = ((ma_AudioObjectGetPropertyData_proc)pContext->coreaudio.AudioObjectGetPropertyData)(kAudioObjectSystemObject, &propAddressDefaultDevice, 0, NULL, &defaultDeviceObjectIDSize, &defaultDeviceObjectID);
    if (status == noErr) {
        *pDeviceObjectID = defaultDeviceObjectID;
        return MA_SUCCESS;
    }

    /* If we get here it means we couldn't find the device. */
    return MA_NO_DEVICE;
}

static ma_result ma_find_AudioObjectID(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, AudioObjectID* pDeviceObjectID)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pDeviceObjectID != NULL);

    /* Safety. */
    *pDeviceObjectID = 0;

    if (pDeviceID == NULL) {
        /* Default device. */
        return ma_find_default_AudioObjectID(pContext, deviceType, pDeviceObjectID);
    } else {
        /* Explicit device. */
        UInt32 deviceCount;
        AudioObjectID* pDeviceObjectIDs;
        ma_result result;
        UInt32 iDevice;

        result = ma_get_device_object_ids__coreaudio(pContext, &deviceCount, &pDeviceObjectIDs);
        if (result != MA_SUCCESS) {
            return result;
        }

        for (iDevice = 0; iDevice < deviceCount; ++iDevice) {
            AudioObjectID deviceObjectID = pDeviceObjectIDs[iDevice];

            char uid[256];
            if (ma_get_AudioObject_uid(pContext, deviceObjectID, sizeof(uid), uid) != MA_SUCCESS) {
                continue;
            }

            if (deviceType == ma_device_type_playback) {
                if (ma_does_AudioObject_support_playback(pContext, deviceObjectID)) {
                    if (strcmp(uid, pDeviceID->coreaudio) == 0) {
                        *pDeviceObjectID = deviceObjectID;
                        ma_free(pDeviceObjectIDs, &pContext->allocationCallbacks);
                        return MA_SUCCESS;
                    }
                }
            } else {
                if (ma_does_AudioObject_support_capture(pContext, deviceObjectID)) {
                    if (strcmp(uid, pDeviceID->coreaudio) == 0) {
                        *pDeviceObjectID = deviceObjectID;
                        ma_free(pDeviceObjectIDs, &pContext->allocationCallbacks);
                        return MA_SUCCESS;
                    }
                }
            }
        }

        ma_free(pDeviceObjectIDs, &pContext->allocationCallbacks);
    }

    /* If we get here it means we couldn't find the device. */
    return MA_NO_DEVICE;
}


static ma_result ma_find_best_format__coreaudio(ma_context* pContext, AudioObjectID deviceObjectID, ma_device_type deviceType, ma_format format, ma_uint32 channels, ma_uint32 sampleRate, const AudioStreamBasicDescription* pOrigFormat, AudioStreamBasicDescription* pFormat)
{
    UInt32 deviceFormatDescriptionCount;
    AudioStreamRangedDescription* pDeviceFormatDescriptions;
    ma_result result;
    ma_uint32 desiredSampleRate;
    ma_uint32 desiredChannelCount;
    ma_format desiredFormat;
    AudioStreamBasicDescription bestDeviceFormatSoFar;
    ma_bool32 hasSupportedFormat;
    UInt32 iFormat;

    result = ma_get_AudioObject_stream_descriptions(pContext, deviceObjectID, deviceType, &deviceFormatDescriptionCount, &pDeviceFormatDescriptions);
    if (result != MA_SUCCESS) {
        return result;
    }

    desiredSampleRate = sampleRate;
    if (desiredSampleRate == 0) {
        desiredSampleRate = (ma_uint32)pOrigFormat->mSampleRate;
    }

    desiredChannelCount = channels;
    if (desiredChannelCount == 0) {
        desiredChannelCount = pOrigFormat->mChannelsPerFrame;
    }

    desiredFormat = format;
    if (desiredFormat == ma_format_unknown) {
        result = ma_format_from_AudioStreamBasicDescription(pOrigFormat, &desiredFormat);
        if (result != MA_SUCCESS || desiredFormat == ma_format_unknown) {
            desiredFormat = g_maFormatPriorities[0];
        }
    }

    /*
    If we get here it means we don't have an exact match to what the client is asking for. We'll need to find the closest one. The next
    loop will check for formats that have the same sample rate to what we're asking for. If there is, we prefer that one in all cases.
    */
    MA_ZERO_OBJECT(&bestDeviceFormatSoFar);

    hasSupportedFormat = MA_FALSE;
    for (iFormat = 0; iFormat < deviceFormatDescriptionCount; ++iFormat) {
        ma_format formatFromDescription;
        ma_result formatResult = ma_format_from_AudioStreamBasicDescription(&pDeviceFormatDescriptions[iFormat].mFormat, &formatFromDescription);
        if (formatResult == MA_SUCCESS && formatFromDescription != ma_format_unknown) {
            hasSupportedFormat = MA_TRUE;
            bestDeviceFormatSoFar = pDeviceFormatDescriptions[iFormat].mFormat;
            break;
        }
    }

    if (!hasSupportedFormat) {
        ma_free(pDeviceFormatDescriptions, &pContext->allocationCallbacks);
        return MA_FORMAT_NOT_SUPPORTED;
    }


    for (iFormat = 0; iFormat < deviceFormatDescriptionCount; ++iFormat) {
        AudioStreamBasicDescription thisDeviceFormat = pDeviceFormatDescriptions[iFormat].mFormat;
        ma_format thisSampleFormat;
        ma_result formatResult;
        ma_format bestSampleFormatSoFar;

        /* If the format is not supported by miniaudio we need to skip this one entirely. */
        formatResult = ma_format_from_AudioStreamBasicDescription(&pDeviceFormatDescriptions[iFormat].mFormat, &thisSampleFormat);
        if (formatResult != MA_SUCCESS || thisSampleFormat == ma_format_unknown) {
            continue;   /* The format is not supported by miniaudio. Skip. */
        }

        ma_format_from_AudioStreamBasicDescription(&bestDeviceFormatSoFar, &bestSampleFormatSoFar);

        /* Getting here means the format is supported by miniaudio which makes this format a candidate. */
        if (thisDeviceFormat.mSampleRate != desiredSampleRate) {
            /*
            The sample rate does not match, but this format could still be usable, although it's a very low priority. If the best format
            so far has an equal sample rate we can just ignore this one.
            */
            if (bestDeviceFormatSoFar.mSampleRate == desiredSampleRate) {
                continue;   /* The best sample rate so far has the same sample rate as what we requested which means it's still the best so far. Skip this format. */
            } else {
                /* In this case, neither the best format so far nor this one have the same sample rate. Check the channel count next. */
                if (thisDeviceFormat.mChannelsPerFrame != desiredChannelCount) {
                    /* This format has a different sample rate _and_ a different channel count. */
                    if (bestDeviceFormatSoFar.mChannelsPerFrame == desiredChannelCount) {
                        continue;   /* No change to the best format. */
                    } else {
                        /*
                        Both this format and the best so far have different sample rates and different channel counts. Whichever has the
                        best format is the new best.
                        */
                        if (ma_get_format_priority_index(thisSampleFormat) < ma_get_format_priority_index(bestSampleFormatSoFar)) {
                            bestDeviceFormatSoFar = thisDeviceFormat;
                            continue;
                        } else {
                            continue;   /* No change to the best format. */
                        }
                    }
                } else {
                    /* This format has a different sample rate but the desired channel count. */
                    if (bestDeviceFormatSoFar.mChannelsPerFrame == desiredChannelCount) {
                        /* Both this format and the best so far have the desired channel count. Whichever has the best format is the new best. */
                        if (ma_get_format_priority_index(thisSampleFormat) < ma_get_format_priority_index(bestSampleFormatSoFar)) {
                            bestDeviceFormatSoFar = thisDeviceFormat;
                            continue;
                        } else {
                            continue;   /* No change to the best format for now. */
                        }
                    } else {
                        /* This format has the desired channel count, but the best so far does not. We have a new best. */
                        bestDeviceFormatSoFar = thisDeviceFormat;
                        continue;
                    }
                }
            }
        } else {
            /*
            The sample rates match which makes this format a very high priority contender. If the best format so far has a different
            sample rate it needs to be replaced with this one.
            */
            if (bestDeviceFormatSoFar.mSampleRate != desiredSampleRate) {
                bestDeviceFormatSoFar = thisDeviceFormat;
                continue;
            } else {
                /* In this case both this format and the best format so far have the same sample rate. Check the channel count next. */
                if (thisDeviceFormat.mChannelsPerFrame == desiredChannelCount) {
                    /*
                    In this case this format has the same channel count as what the client is requesting. If the best format so far has
                    a different count, this one becomes the new best.
                    */
                    if (bestDeviceFormatSoFar.mChannelsPerFrame != desiredChannelCount) {
                        bestDeviceFormatSoFar = thisDeviceFormat;
                        continue;
                    } else {
                        /* In this case both this format and the best so far have the ideal sample rate and channel count. Check the format. */
                        if (thisSampleFormat == desiredFormat) {
                            bestDeviceFormatSoFar = thisDeviceFormat;
                            break;  /* Found the exact match. */
                        } else {
                            /* The formats are different. The new best format is the one with the highest priority format according to miniaudio. */
                            if (ma_get_format_priority_index(thisSampleFormat) < ma_get_format_priority_index(bestSampleFormatSoFar)) {
                                bestDeviceFormatSoFar = thisDeviceFormat;
                                continue;
                            } else {
                                continue;   /* No change to the best format for now. */
                            }
                        }
                    }
                } else {
                    /*
                    In this case the channel count is different to what the client has requested. If the best so far has the same channel
                    count as the requested count then it remains the best.
                    */
                    if (bestDeviceFormatSoFar.mChannelsPerFrame == desiredChannelCount) {
                        continue;
                    } else {
                        /*
                        This is the case where both have the same sample rate (good) but different channel counts. Right now both have about
                        the same priority, but we need to compare the format now.
                        */
                        if (thisSampleFormat == bestSampleFormatSoFar) {
                            if (ma_get_format_priority_index(thisSampleFormat) < ma_get_format_priority_index(bestSampleFormatSoFar)) {
                                bestDeviceFormatSoFar = thisDeviceFormat;
                                continue;
                            } else {
                                continue;   /* No change to the best format for now. */
                            }
                        }
                    }
                }
            }
        }
    }

    *pFormat = bestDeviceFormatSoFar;

    ma_free(pDeviceFormatDescriptions, &pContext->allocationCallbacks);
    return MA_SUCCESS;
}

static ma_result ma_get_AudioUnit_channel_map(ma_context* pContext, AudioUnit audioUnit, ma_device_type deviceType, ma_channel* pChannelMap, size_t channelMapCap)
{
    AudioUnitScope deviceScope;
    AudioUnitElement deviceBus;
    UInt32 channelLayoutSize;
    OSStatus status;
    AudioChannelLayout* pChannelLayout;
    ma_result result;

    MA_ASSERT(pContext != NULL);

    if (deviceType == ma_device_type_playback) {
        deviceScope = kAudioUnitScope_Input;
        deviceBus = MA_COREAUDIO_OUTPUT_BUS;
    } else {
        deviceScope = kAudioUnitScope_Output;
        deviceBus = MA_COREAUDIO_INPUT_BUS;
    }

    status = ((ma_AudioUnitGetPropertyInfo_proc)pContext->coreaudio.AudioUnitGetPropertyInfo)(audioUnit, kAudioUnitProperty_AudioChannelLayout, deviceScope, deviceBus, &channelLayoutSize, NULL);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }

    pChannelLayout = (AudioChannelLayout*)ma_malloc(channelLayoutSize, &pContext->allocationCallbacks);
    if (pChannelLayout == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    status = ((ma_AudioUnitGetProperty_proc)pContext->coreaudio.AudioUnitGetProperty)(audioUnit, kAudioUnitProperty_AudioChannelLayout, deviceScope, deviceBus, pChannelLayout, &channelLayoutSize);
    if (status != noErr) {
        ma_free(pChannelLayout, &pContext->allocationCallbacks);
        return ma_result_from_OSStatus(status);
    }

    result = ma_get_channel_map_from_AudioChannelLayout(pChannelLayout, pChannelMap, channelMapCap);
    if (result != MA_SUCCESS) {
        ma_free(pChannelLayout, &pContext->allocationCallbacks);
        return result;
    }

    ma_free(pChannelLayout, &pContext->allocationCallbacks);
    return MA_SUCCESS;
}
#endif /* MA_APPLE_DESKTOP */


#if !defined(MA_APPLE_DESKTOP)
static void ma_AVAudioSessionPortDescription_to_device_info(AVAudioSessionPortDescription* pPortDesc, ma_device_info* pInfo)
{
    MA_ZERO_OBJECT(pInfo);
    ma_strncpy_s(pInfo->name,         sizeof(pInfo->name),         [pPortDesc.portName UTF8String], (size_t)-1);
    ma_strncpy_s(pInfo->id.coreaudio, sizeof(pInfo->id.coreaudio), [pPortDesc.UID      UTF8String], (size_t)-1);
}
#endif

static ma_result ma_context_enumerate_devices__coreaudio(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
#if defined(MA_APPLE_DESKTOP)
    UInt32 deviceCount;
    AudioObjectID* pDeviceObjectIDs;
    AudioObjectID defaultDeviceObjectIDPlayback;
    AudioObjectID defaultDeviceObjectIDCapture;
    ma_result result;
    UInt32 iDevice;

    ma_find_default_AudioObjectID(pContext, ma_device_type_playback, &defaultDeviceObjectIDPlayback);   /* OK if this fails. */
    ma_find_default_AudioObjectID(pContext, ma_device_type_capture,  &defaultDeviceObjectIDCapture);    /* OK if this fails. */

    result = ma_get_device_object_ids__coreaudio(pContext, &deviceCount, &pDeviceObjectIDs);
    if (result != MA_SUCCESS) {
        return result;
    }

    for (iDevice = 0; iDevice < deviceCount; ++iDevice) {
        AudioObjectID deviceObjectID = pDeviceObjectIDs[iDevice];
        ma_device_info info;

        MA_ZERO_OBJECT(&info);
        if (ma_get_AudioObject_uid(pContext, deviceObjectID, sizeof(info.id.coreaudio), info.id.coreaudio) != MA_SUCCESS) {
            continue;
        }
        if (ma_get_AudioObject_name(pContext, deviceObjectID, sizeof(info.name), info.name) != MA_SUCCESS) {
            continue;
        }

        if (ma_does_AudioObject_support_playback(pContext, deviceObjectID)) {
            if (deviceObjectID == defaultDeviceObjectIDPlayback) {
                info.isDefault = MA_TRUE;
            }

            if (!callback(pContext, ma_device_type_playback, &info, pUserData)) {
                break;
            }
        }
        if (ma_does_AudioObject_support_capture(pContext, deviceObjectID)) {
            if (deviceObjectID == defaultDeviceObjectIDCapture) {
                info.isDefault = MA_TRUE;
            }

            if (!callback(pContext, ma_device_type_capture, &info, pUserData)) {
                break;
            }
        }
    }

    ma_free(pDeviceObjectIDs, &pContext->allocationCallbacks);
#else
    ma_device_info info;
    NSArray *pInputs  = [[[AVAudioSession sharedInstance] currentRoute] inputs];
    NSArray *pOutputs = [[[AVAudioSession sharedInstance] currentRoute] outputs];

    for (AVAudioSessionPortDescription* pPortDesc in pOutputs) {
        ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, &info);
        if (!callback(pContext, ma_device_type_playback, &info, pUserData)) {
            return MA_SUCCESS;
        }
    }

    for (AVAudioSessionPortDescription* pPortDesc in pInputs) {
        ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, &info);
        if (!callback(pContext, ma_device_type_capture, &info, pUserData)) {
            return MA_SUCCESS;
        }
    }
#endif

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__coreaudio(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_result result;

    MA_ASSERT(pContext != NULL);

#if defined(MA_APPLE_DESKTOP)
    /* Desktop */
    {
        AudioObjectID deviceObjectID;
        AudioObjectID defaultDeviceObjectID;
        UInt32 streamDescriptionCount;
        AudioStreamRangedDescription* pStreamDescriptions;
        UInt32 iStreamDescription;
        UInt32 sampleRateRangeCount;
        AudioValueRange* pSampleRateRanges;

        ma_find_default_AudioObjectID(pContext, deviceType, &defaultDeviceObjectID);     /* OK if this fails. */

        result = ma_find_AudioObjectID(pContext, deviceType, pDeviceID, &deviceObjectID);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_get_AudioObject_uid(pContext, deviceObjectID, sizeof(pDeviceInfo->id.coreaudio), pDeviceInfo->id.coreaudio);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_get_AudioObject_name(pContext, deviceObjectID, sizeof(pDeviceInfo->name), pDeviceInfo->name);
        if (result != MA_SUCCESS) {
            return result;
        }

        if (deviceObjectID == defaultDeviceObjectID) {
            pDeviceInfo->isDefault = MA_TRUE;
        }

        /*
        There could be a large number of permutations here. Fortunately there is only a single channel count
        being reported which reduces this quite a bit. For sample rates we're only reporting those that are
        one of miniaudio's recognized "standard" rates. If there are still more formats than can fit into
        our fixed sized array we'll just need to truncate them. This is unlikely and will probably only happen
        if some driver performs software data conversion and therefore reports every possible format and
        sample rate.
        */
        pDeviceInfo->nativeDataFormatCount = 0;

        /* Formats. */
        {
            ma_format uniqueFormats[ma_format_count];
            ma_uint32 uniqueFormatCount = 0;
            ma_uint32 channels;

            /* Channels. */
            result = ma_get_AudioObject_channel_count(pContext, deviceObjectID, deviceType, &channels);
            if (result != MA_SUCCESS) {
                return result;
            }

            /* Formats. */
            result = ma_get_AudioObject_stream_descriptions(pContext, deviceObjectID, deviceType, &streamDescriptionCount, &pStreamDescriptions);
            if (result != MA_SUCCESS) {
                return result;
            }

            for (iStreamDescription = 0; iStreamDescription < streamDescriptionCount; ++iStreamDescription) {
                ma_format format;
                ma_bool32 hasFormatBeenHandled = MA_FALSE;
                ma_uint32 iOutputFormat;
                ma_uint32 iSampleRate;

                result = ma_format_from_AudioStreamBasicDescription(&pStreamDescriptions[iStreamDescription].mFormat, &format);
                if (result != MA_SUCCESS) {
                    continue;
                }

                MA_ASSERT(format != ma_format_unknown);

                /* Make sure the format isn't already in the output list. */
                for (iOutputFormat = 0; iOutputFormat < uniqueFormatCount; ++iOutputFormat) {
                    if (uniqueFormats[iOutputFormat] == format) {
                        hasFormatBeenHandled = MA_TRUE;
                        break;
                    }
                }

                /* If we've already handled this format just skip it. */
                if (hasFormatBeenHandled) {
                    continue;
                }

                uniqueFormats[uniqueFormatCount] = format;
                uniqueFormatCount += 1;

                /* Sample Rates */
                result = ma_get_AudioObject_sample_rates(pContext, deviceObjectID, deviceType, &sampleRateRangeCount, &pSampleRateRanges);
                if (result != MA_SUCCESS) {
                    return result;
                }

                /*
                Annoyingly Core Audio reports a sample rate range. We just get all the standard rates that are
                between this range.
                */
                for (iSampleRate = 0; iSampleRate < sampleRateRangeCount; ++iSampleRate) {
                    ma_uint32 iStandardSampleRate;
                    for (iStandardSampleRate = 0; iStandardSampleRate < ma_countof(g_maStandardSampleRatePriorities); iStandardSampleRate += 1) {
                        ma_uint32 standardSampleRate = g_maStandardSampleRatePriorities[iStandardSampleRate];
                        if (standardSampleRate >= pSampleRateRanges[iSampleRate].mMinimum && standardSampleRate <= pSampleRateRanges[iSampleRate].mMaximum) {
                            /* We have a new data format. Add it to the list. */
                            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = format;
                            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = channels;
                            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = standardSampleRate;
                            pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = 0;
                            pDeviceInfo->nativeDataFormatCount += 1;

                            if (pDeviceInfo->nativeDataFormatCount >= ma_countof(pDeviceInfo->nativeDataFormats)) {
                                break;  /* No more room for any more formats. */
                            }
                        }
                    }
                }

                ma_free(pSampleRateRanges, &pContext->allocationCallbacks);

                if (pDeviceInfo->nativeDataFormatCount >= ma_countof(pDeviceInfo->nativeDataFormats)) {
                    break;  /* No more room for any more formats. */
                }
            }

            ma_free(pStreamDescriptions, &pContext->allocationCallbacks);
        }
    }
#else
    /* Mobile */
    {
        AudioComponentDescription desc;
        AudioComponent component;
        AudioUnit audioUnit;
        OSStatus status;
        AudioUnitScope formatScope;
        AudioUnitElement formatElement;
        AudioStreamBasicDescription bestFormat;
        UInt32 propSize;

        /* We want to ensure we use a consistent device name to device enumeration. */
        if (pDeviceID != NULL && pDeviceID->coreaudio[0] != '\0') {
            ma_bool32 found = MA_FALSE;
            if (deviceType == ma_device_type_playback) {
                NSArray *pOutputs = [[[AVAudioSession sharedInstance] currentRoute] outputs];
                for (AVAudioSessionPortDescription* pPortDesc in pOutputs) {
                    if (strcmp(pDeviceID->coreaudio, [pPortDesc.UID UTF8String]) == 0) {
                        ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, pDeviceInfo);
                        found = MA_TRUE;
                        break;
                    }
                }
            } else {
                NSArray *pInputs = [[[AVAudioSession sharedInstance] currentRoute] inputs];
                for (AVAudioSessionPortDescription* pPortDesc in pInputs) {
                    if (strcmp(pDeviceID->coreaudio, [pPortDesc.UID UTF8String]) == 0) {
                        ma_AVAudioSessionPortDescription_to_device_info(pPortDesc, pDeviceInfo);
                        found = MA_TRUE;
                        break;
                    }
                }
            }

            if (!found) {
                return MA_DOES_NOT_EXIST;
            }
        } else {
            if (deviceType == ma_device_type_playback) {
                ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
            } else {
                ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
            }
        }


        /*
        Retrieving device information is more annoying on mobile than desktop. For simplicity I'm locking this down to whatever format is
        reported on a temporary I/O unit. The problem, however, is that this doesn't return a value for the sample rate which we need to
        retrieve from the AVAudioSession shared instance.
        */
        desc.componentType = kAudioUnitType_Output;
        desc.componentSubType = kAudioUnitSubType_RemoteIO;
        desc.componentManufacturer = kAudioUnitManufacturer_Apple;
        desc.componentFlags = 0;
        desc.componentFlagsMask = 0;

        component = ((ma_AudioComponentFindNext_proc)pContext->coreaudio.AudioComponentFindNext)(NULL, &desc);
        if (component == NULL) {
            return MA_FAILED_TO_INIT_BACKEND;
        }

        status = ((ma_AudioComponentInstanceNew_proc)pContext->coreaudio.AudioComponentInstanceNew)(component, &audioUnit);
        if (status != noErr) {
            return ma_result_from_OSStatus(status);
        }

        formatScope   = (deviceType == ma_device_type_playback) ? kAudioUnitScope_Input : kAudioUnitScope_Output;
        formatElement = (deviceType == ma_device_type_playback) ? MA_COREAUDIO_OUTPUT_BUS : MA_COREAUDIO_INPUT_BUS;

        propSize = sizeof(bestFormat);
        status = ((ma_AudioUnitGetProperty_proc)pContext->coreaudio.AudioUnitGetProperty)(audioUnit, kAudioUnitProperty_StreamFormat, formatScope, formatElement, &bestFormat, &propSize);
        if (status != noErr) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(audioUnit);
            return ma_result_from_OSStatus(status);
        }

        ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(audioUnit);
        audioUnit = NULL;

        /* Only a single format is being reported for iOS. */
        pDeviceInfo->nativeDataFormatCount = 1;

        result = ma_format_from_AudioStreamBasicDescription(&bestFormat, &pDeviceInfo->nativeDataFormats[0].format);
        if (result != MA_SUCCESS) {
            return result;
        }

        pDeviceInfo->nativeDataFormats[0].channels = bestFormat.mChannelsPerFrame;

        /*
        It looks like Apple are wanting to push the whole AVAudioSession thing. Thus, we need to use that to determine device settings. To do
        this we just get the shared instance and inspect.
        */
        @autoreleasepool {
            AVAudioSession* pAudioSession = [AVAudioSession sharedInstance];
            MA_ASSERT(pAudioSession != NULL);

            pDeviceInfo->nativeDataFormats[0].sampleRate = (ma_uint32)pAudioSession.sampleRate;
        }
    }
#endif

    (void)pDeviceInfo; /* Unused. */
    return MA_SUCCESS;
}

static AudioBufferList* ma_allocate_AudioBufferList__coreaudio(ma_uint32 sizeInFrames, ma_format format, ma_uint32 channels, ma_stream_layout layout, const ma_allocation_callbacks* pAllocationCallbacks)
{
    AudioBufferList* pBufferList;
    UInt32 audioBufferSizeInBytes;
    size_t allocationSize;

    MA_ASSERT(sizeInFrames > 0);
    MA_ASSERT(format != ma_format_unknown);
    MA_ASSERT(channels > 0);

    allocationSize = sizeof(AudioBufferList) - sizeof(AudioBuffer);  /* Subtract sizeof(AudioBuffer) because that part is dynamically sized. */
    if (layout == ma_stream_layout_interleaved) {
        /* Interleaved case. This is the simple case because we just have one buffer. */
        allocationSize += sizeof(AudioBuffer) * 1;
    } else {
        /* Non-interleaved case. This is the more complex case because there's more than one buffer. */
        allocationSize += sizeof(AudioBuffer) * channels;
    }

    allocationSize += sizeInFrames * ma_get_bytes_per_frame(format, channels);

    pBufferList = (AudioBufferList*)ma_malloc(allocationSize, pAllocationCallbacks);
    if (pBufferList == NULL) {
        return NULL;
    }

    audioBufferSizeInBytes = (UInt32)(sizeInFrames * ma_get_bytes_per_sample(format));

    if (layout == ma_stream_layout_interleaved) {
        pBufferList->mNumberBuffers = 1;
        pBufferList->mBuffers[0].mNumberChannels = channels;
        pBufferList->mBuffers[0].mDataByteSize   = audioBufferSizeInBytes * channels;
        pBufferList->mBuffers[0].mData           = (ma_uint8*)pBufferList + sizeof(AudioBufferList);
    } else {
        ma_uint32 iBuffer;
        pBufferList->mNumberBuffers = channels;
        for (iBuffer = 0; iBuffer < pBufferList->mNumberBuffers; ++iBuffer) {
            pBufferList->mBuffers[iBuffer].mNumberChannels = 1;
            pBufferList->mBuffers[iBuffer].mDataByteSize   = audioBufferSizeInBytes;
            pBufferList->mBuffers[iBuffer].mData           = (ma_uint8*)pBufferList + ((sizeof(AudioBufferList) - sizeof(AudioBuffer)) + (sizeof(AudioBuffer) * channels)) + (audioBufferSizeInBytes * iBuffer);
        }
    }

    return pBufferList;
}

static ma_result ma_device_realloc_AudioBufferList__coreaudio(ma_device* pDevice, ma_uint32 sizeInFrames, ma_format format, ma_uint32 channels, ma_stream_layout layout)
{
    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(format != ma_format_unknown);
    MA_ASSERT(channels > 0);

    /* Only resize the buffer if necessary. */
    if (pDevice->coreaudio.audioBufferCapInFrames < sizeInFrames) {
        AudioBufferList* pNewAudioBufferList;

        pNewAudioBufferList = ma_allocate_AudioBufferList__coreaudio(sizeInFrames, format, channels, layout, &pDevice->pContext->allocationCallbacks);
        if (pNewAudioBufferList == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        /* At this point we'll have a new AudioBufferList and we can free the old one. */
        ma_free(pDevice->coreaudio.pAudioBufferList, &pDevice->pContext->allocationCallbacks);
        pDevice->coreaudio.pAudioBufferList = pNewAudioBufferList;
        pDevice->coreaudio.audioBufferCapInFrames = sizeInFrames;
    }

    /* Getting here means the capacity of the audio is fine. */
    return MA_SUCCESS;
}


static OSStatus ma_on_output__coreaudio(void* pUserData, AudioUnitRenderActionFlags* pActionFlags, const AudioTimeStamp* pTimeStamp, UInt32 busNumber, UInt32 frameCount, AudioBufferList* pBufferList)
{
    ma_device* pDevice = (ma_device*)pUserData;
    ma_stream_layout layout;

    MA_ASSERT(pDevice != NULL);

    /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "INFO: Output Callback: busNumber=%d, frameCount=%d, mNumberBuffers=%d\n", (int)busNumber, (int)frameCount, (int)pBufferList->mNumberBuffers);*/

    /* We need to check whether or not we are outputting interleaved or non-interleaved samples. The way we do this is slightly different for each type. */
    layout = ma_stream_layout_interleaved;
    if (pBufferList->mBuffers[0].mNumberChannels != pDevice->playback.internalChannels) {
        layout = ma_stream_layout_deinterleaved;
    }

    if (layout == ma_stream_layout_interleaved) {
        /* For now we can assume everything is interleaved. */
        UInt32 iBuffer;
        for (iBuffer = 0; iBuffer < pBufferList->mNumberBuffers; ++iBuffer) {
            if (pBufferList->mBuffers[iBuffer].mNumberChannels == pDevice->playback.internalChannels) {
                ma_uint32 frameCountForThisBuffer = pBufferList->mBuffers[iBuffer].mDataByteSize / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
                if (frameCountForThisBuffer > 0) {
                    ma_device_handle_backend_data_callback(pDevice, pBufferList->mBuffers[iBuffer].mData, NULL, frameCountForThisBuffer);
                }

                /*a_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "  frameCount=%d, mNumberChannels=%d, mDataByteSize=%d\n", (int)frameCount, (int)pBufferList->mBuffers[iBuffer].mNumberChannels, (int)pBufferList->mBuffers[iBuffer].mDataByteSize);*/
            } else {
                /*
                This case is where the number of channels in the output buffer do not match our internal channels. It could mean that it's
                not interleaved, in which case we can't handle right now since miniaudio does not yet support non-interleaved streams. We just
                output silence here.
                */
                MA_ZERO_MEMORY(pBufferList->mBuffers[iBuffer].mData, pBufferList->mBuffers[iBuffer].mDataByteSize);
                /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "  WARNING: Outputting silence. frameCount=%d, mNumberChannels=%d, mDataByteSize=%d\n", (int)frameCount, (int)pBufferList->mBuffers[iBuffer].mNumberChannels, (int)pBufferList->mBuffers[iBuffer].mDataByteSize);*/
            }
        }
    } else {
        /* This is the deinterleaved case. We need to update each buffer in groups of internalChannels. This assumes each buffer is the same size. */
        MA_ASSERT(pDevice->playback.internalChannels <= MA_MAX_CHANNELS);   /* This should have been validated at initialization time. */

        /*
        For safety we'll check that the internal channels is a multiple of the buffer count. If it's not it means something
        very strange has happened and we're not going to support it.
        */
        if ((pBufferList->mNumberBuffers % pDevice->playback.internalChannels) == 0) {
            ma_uint8 tempBuffer[4096];
            UInt32 iBuffer;

            for (iBuffer = 0; iBuffer < pBufferList->mNumberBuffers; iBuffer += pDevice->playback.internalChannels) {
                ma_uint32 frameCountPerBuffer = pBufferList->mBuffers[iBuffer].mDataByteSize / ma_get_bytes_per_sample(pDevice->playback.internalFormat);
                ma_uint32 framesRemaining = frameCountPerBuffer;

                while (framesRemaining > 0) {
                    void* ppDeinterleavedBuffers[MA_MAX_CHANNELS];
                    ma_uint32 iChannel;
                    ma_uint32 framesToRead = sizeof(tempBuffer) / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
                    if (framesToRead > framesRemaining) {
                        framesToRead = framesRemaining;
                    }

                    ma_device_handle_backend_data_callback(pDevice, tempBuffer, NULL, framesToRead);

                    for (iChannel = 0; iChannel < pDevice->playback.internalChannels; ++iChannel) {
                        ppDeinterleavedBuffers[iChannel] = (void*)ma_offset_ptr(pBufferList->mBuffers[iBuffer+iChannel].mData, (frameCountPerBuffer - framesRemaining) * ma_get_bytes_per_sample(pDevice->playback.internalFormat));
                    }

                    ma_deinterleave_pcm_frames(pDevice->playback.internalFormat, pDevice->playback.internalChannels, framesToRead, tempBuffer, ppDeinterleavedBuffers);

                    framesRemaining -= framesToRead;
                }
            }
        }
    }

    (void)pActionFlags;
    (void)pTimeStamp;
    (void)busNumber;
    (void)frameCount;

    return noErr;
}

static OSStatus ma_on_input__coreaudio(void* pUserData, AudioUnitRenderActionFlags* pActionFlags, const AudioTimeStamp* pTimeStamp, UInt32 busNumber, UInt32 frameCount, AudioBufferList* pUnusedBufferList)
{
    ma_device* pDevice = (ma_device*)pUserData;
    AudioBufferList* pRenderedBufferList;
    ma_result result;
    ma_stream_layout layout;
    ma_uint32 iBuffer;
    OSStatus status;

    MA_ASSERT(pDevice != NULL);

    pRenderedBufferList = (AudioBufferList*)pDevice->coreaudio.pAudioBufferList;
    MA_ASSERT(pRenderedBufferList);

    /* We need to check whether or not we are outputting interleaved or non-interleaved samples. The way we do this is slightly different for each type. */
    layout = ma_stream_layout_interleaved;
    if (pRenderedBufferList->mBuffers[0].mNumberChannels != pDevice->capture.internalChannels) {
        layout = ma_stream_layout_deinterleaved;
    }

    /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "INFO: Input Callback: busNumber=%d, frameCount=%d, mNumberBuffers=%d\n", (int)busNumber, (int)frameCount, (int)pRenderedBufferList->mNumberBuffers);*/

    /*
    There has been a situation reported where frame count passed into this function is greater than the capacity of
    our capture buffer. There doesn't seem to be a reliable way to determine what the maximum frame count will be,
    so we need to instead resort to dynamically reallocating our buffer to ensure it's large enough to capture the
    number of frames requested by this callback.
    */
    result = ma_device_realloc_AudioBufferList__coreaudio(pDevice, frameCount, pDevice->capture.internalFormat, pDevice->capture.internalChannels, layout);
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "Failed to allocate AudioBufferList for capture.\n");
        return noErr;
    }

    pRenderedBufferList = (AudioBufferList*)pDevice->coreaudio.pAudioBufferList;
    MA_ASSERT(pRenderedBufferList);

    /*
    When you call AudioUnitRender(), Core Audio tries to be helpful by setting the mDataByteSize to the number of bytes
    that were actually rendered. The problem with this is that the next call can fail with -50 due to the size no longer
    being set to the capacity of the buffer, but instead the size in bytes of the previous render. This will cause a
    problem when a future call to this callback specifies a larger number of frames.

    To work around this we need to explicitly set the size of each buffer to their respective size in bytes.
    */
    for (iBuffer = 0; iBuffer < pRenderedBufferList->mNumberBuffers; ++iBuffer) {
        pRenderedBufferList->mBuffers[iBuffer].mDataByteSize = pDevice->coreaudio.audioBufferCapInFrames * ma_get_bytes_per_sample(pDevice->capture.internalFormat) * pRenderedBufferList->mBuffers[iBuffer].mNumberChannels;
        /*printf("DEBUG: nDataByteSize = %d\n", (int)pRenderedBufferList->mBuffers[iBuffer].mDataByteSize);*/
    }

    status = ((ma_AudioUnitRender_proc)pDevice->pContext->coreaudio.AudioUnitRender)((AudioUnit)pDevice->coreaudio.audioUnitCapture, pActionFlags, pTimeStamp, busNumber, frameCount, pRenderedBufferList);
    if (status != noErr) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "ERROR: AudioUnitRender() failed with %d.\n", (int)status);
        return status;
    }

    if (layout == ma_stream_layout_interleaved) {
        for (iBuffer = 0; iBuffer < pRenderedBufferList->mNumberBuffers; ++iBuffer) {
            if (pRenderedBufferList->mBuffers[iBuffer].mNumberChannels == pDevice->capture.internalChannels) {
                ma_device_handle_backend_data_callback(pDevice, NULL, pRenderedBufferList->mBuffers[iBuffer].mData, frameCount);
                /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "  mDataByteSize=%d.\n", (int)pRenderedBufferList->mBuffers[iBuffer].mDataByteSize);*/
            } else {
                /*
                This case is where the number of channels in the output buffer do not match our internal channels. It could mean that it's
                not interleaved, in which case we can't handle right now since miniaudio does not yet support non-interleaved streams.
                */
                ma_uint8 silentBuffer[4096];
                ma_uint32 framesRemaining;

                MA_ZERO_MEMORY(silentBuffer, sizeof(silentBuffer));

                framesRemaining = frameCount;
                while (framesRemaining > 0) {
                    ma_uint32 framesToSend = sizeof(silentBuffer) / ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
                    if (framesToSend > framesRemaining) {
                        framesToSend = framesRemaining;
                    }

                    ma_device_handle_backend_data_callback(pDevice, NULL, silentBuffer, framesToSend);

                    framesRemaining -= framesToSend;
                }

                /*ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_DEBUG, "  WARNING: Outputting silence. frameCount=%d, mNumberChannels=%d, mDataByteSize=%d\n", (int)frameCount, (int)pRenderedBufferList->mBuffers[iBuffer].mNumberChannels, (int)pRenderedBufferList->mBuffers[iBuffer].mDataByteSize);*/
            }
        }
    } else {
        /* This is the deinterleaved case. We need to interleave the audio data before sending it to the client. This assumes each buffer is the same size. */
        MA_ASSERT(pDevice->capture.internalChannels <= MA_MAX_CHANNELS);    /* This should have been validated at initialization time. */

        /*
        For safety we'll check that the internal channels is a multiple of the buffer count. If it's not it means something
        very strange has happened and we're not going to support it.
        */
        if ((pRenderedBufferList->mNumberBuffers % pDevice->capture.internalChannels) == 0) {
            ma_uint8 tempBuffer[4096];
            for (iBuffer = 0; iBuffer < pRenderedBufferList->mNumberBuffers; iBuffer += pDevice->capture.internalChannels) {
                ma_uint32 framesRemaining = frameCount;
                while (framesRemaining > 0) {
                    void* ppDeinterleavedBuffers[MA_MAX_CHANNELS];
                    ma_uint32 iChannel;
                    ma_uint32 framesToSend = sizeof(tempBuffer) / ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
                    if (framesToSend > framesRemaining) {
                        framesToSend = framesRemaining;
                    }

                    for (iChannel = 0; iChannel < pDevice->capture.internalChannels; ++iChannel) {
                        ppDeinterleavedBuffers[iChannel] = (void*)ma_offset_ptr(pRenderedBufferList->mBuffers[iBuffer+iChannel].mData, (frameCount - framesRemaining) * ma_get_bytes_per_sample(pDevice->capture.internalFormat));
                    }

                    ma_interleave_pcm_frames(pDevice->capture.internalFormat, pDevice->capture.internalChannels, framesToSend, (const void**)ppDeinterleavedBuffers, tempBuffer);
                    ma_device_handle_backend_data_callback(pDevice, NULL, tempBuffer, framesToSend);

                    framesRemaining -= framesToSend;
                }
            }
        }
    }

    (void)pActionFlags;
    (void)pTimeStamp;
    (void)busNumber;
    (void)frameCount;
    (void)pUnusedBufferList;

    return noErr;
}

static void on_start_stop__coreaudio(void* pUserData, AudioUnit audioUnit, AudioUnitPropertyID propertyID, AudioUnitScope scope, AudioUnitElement element)
{
    ma_device* pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    /* Don't do anything if it looks like we're just reinitializing due to a device switch. */
    if (((audioUnit == pDevice->coreaudio.audioUnitPlayback) && pDevice->coreaudio.isSwitchingPlaybackDevice) ||
        ((audioUnit == pDevice->coreaudio.audioUnitCapture)  && pDevice->coreaudio.isSwitchingCaptureDevice)) {
        return;
    }

    /*
    There's been a report of a deadlock here when triggered by ma_device_uninit(). It looks like
    AudioUnitGetProprty (called below) and AudioComponentInstanceDispose (called in ma_device_uninit)
    can try waiting on the same lock. I'm going to try working around this by not calling any Core
    Audio APIs in the callback when the device has been stopped or uninitialized.
    */
    if (ma_device_get_state(pDevice) == ma_device_state_uninitialized || ma_device_get_state(pDevice) == ma_device_state_stopping || ma_device_get_state(pDevice) == ma_device_state_stopped) {
        ma_device__on_notification_stopped(pDevice);
    } else {
        UInt32 isRunning;
        UInt32 isRunningSize = sizeof(isRunning);
        OSStatus status = ((ma_AudioUnitGetProperty_proc)pDevice->pContext->coreaudio.AudioUnitGetProperty)(audioUnit, kAudioOutputUnitProperty_IsRunning, scope, element, &isRunning, &isRunningSize);
        if (status != noErr) {
            goto done; /* Don't really know what to do in this case... just ignore it, I suppose... */
        }

        if (!isRunning) {
            /*
            The stop event is a bit annoying in Core Audio because it will be called when we automatically switch the default device. Some scenarios to consider:

            1) When the device is unplugged, this will be called _before_ the default device change notification.
            2) When the device is changed via the default device change notification, this will be called _after_ the switch.

            For case #1, we just check if there's a new default device available. If so, we just ignore the stop event. For case #2 we check a flag.
            */
            if (((audioUnit == pDevice->coreaudio.audioUnitPlayback) && pDevice->coreaudio.isDefaultPlaybackDevice) ||
                ((audioUnit == pDevice->coreaudio.audioUnitCapture)  && pDevice->coreaudio.isDefaultCaptureDevice)) {
                /*
                It looks like the device is switching through an external event, such as the user unplugging the device or changing the default device
                via the operating system's sound settings. If we're re-initializing the device, we just terminate because we want the stopping of the
                device to be seamless to the client (we don't want them receiving the stopped event and thinking that the device has stopped when it
                hasn't!).
                */
                if (((audioUnit == pDevice->coreaudio.audioUnitPlayback) && pDevice->coreaudio.isSwitchingPlaybackDevice) ||
                    ((audioUnit == pDevice->coreaudio.audioUnitCapture)  && pDevice->coreaudio.isSwitchingCaptureDevice)) {
                    goto done;
                }

                /*
                Getting here means the device is not reinitializing which means it may have been unplugged. From what I can see, it looks like Core Audio
                will try switching to the new default device seamlessly. We need to somehow find a way to determine whether or not Core Audio will most
                likely be successful in switching to the new device.

                TODO: Try to predict if Core Audio will switch devices. If not, the stopped callback needs to be posted.
                */
                goto done;
            }

            /* Getting here means we need to stop the device. */
            ma_device__on_notification_stopped(pDevice);
        }
    }

    (void)propertyID; /* Unused. */

done:
    /* Always signal the stop event. It's possible for the "else" case to get hit which can happen during an interruption. */
    ma_event_signal(&pDevice->coreaudio.stopEvent);
}

#if defined(MA_APPLE_DESKTOP)
static ma_spinlock g_DeviceTrackingInitLock_CoreAudio = 0;  /* A spinlock for mutal exclusion of the init/uninit of the global tracking data. Initialization to 0 is what we need. */
static ma_uint32   g_DeviceTrackingInitCounter_CoreAudio = 0;
static ma_mutex    g_DeviceTrackingMutex_CoreAudio;
static ma_device** g_ppTrackedDevices_CoreAudio = NULL;
static ma_uint32   g_TrackedDeviceCap_CoreAudio = 0;
static ma_uint32   g_TrackedDeviceCount_CoreAudio = 0;

static OSStatus ma_default_device_changed__coreaudio(AudioObjectID objectID, UInt32 addressCount, const AudioObjectPropertyAddress* pAddresses, void* pUserData)
{
    ma_device_type deviceType;

    /* Not sure if I really need to check this, but it makes me feel better. */
    if (addressCount == 0) {
        return noErr;
    }

    if (pAddresses[0].mSelector == kAudioHardwarePropertyDefaultOutputDevice) {
        deviceType = ma_device_type_playback;
    } else if (pAddresses[0].mSelector == kAudioHardwarePropertyDefaultInputDevice) {
        deviceType = ma_device_type_capture;
    } else {
        return noErr;   /* Should never hit this. */
    }

    ma_mutex_lock(&g_DeviceTrackingMutex_CoreAudio);
    {
        ma_uint32 iDevice;
        for (iDevice = 0; iDevice < g_TrackedDeviceCount_CoreAudio; iDevice += 1) {
            ma_result reinitResult;
            ma_device* pDevice;

            pDevice = g_ppTrackedDevices_CoreAudio[iDevice];
            if (pDevice->type == deviceType || pDevice->type == ma_device_type_duplex) {
                if (deviceType == ma_device_type_playback) {
                    pDevice->coreaudio.isSwitchingPlaybackDevice = MA_TRUE;
                    reinitResult = ma_device_reinit_internal__coreaudio(pDevice, deviceType, MA_TRUE);
                    pDevice->coreaudio.isSwitchingPlaybackDevice = MA_FALSE;
                } else {
                    pDevice->coreaudio.isSwitchingCaptureDevice = MA_TRUE;
                    reinitResult = ma_device_reinit_internal__coreaudio(pDevice, deviceType, MA_TRUE);
                    pDevice->coreaudio.isSwitchingCaptureDevice = MA_FALSE;
                }

                if (reinitResult == MA_SUCCESS) {
                    ma_device__post_init_setup(pDevice, deviceType);

                    /* Restart the device if required. If this fails we need to stop the device entirely. */
                    if (ma_device_get_state(pDevice) == ma_device_state_started) {
                        OSStatus status;
                        if (deviceType == ma_device_type_playback) {
                            status = ((ma_AudioOutputUnitStart_proc)pDevice->pContext->coreaudio.AudioOutputUnitStart)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
                            if (status != noErr) {
                                if (pDevice->type == ma_device_type_duplex) {
                                    ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
                                }
                                ma_device__set_state(pDevice, ma_device_state_stopped);
                            }
                        } else if (deviceType == ma_device_type_capture) {
                            status = ((ma_AudioOutputUnitStart_proc)pDevice->pContext->coreaudio.AudioOutputUnitStart)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
                            if (status != noErr) {
                                if (pDevice->type == ma_device_type_duplex) {
                                    ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
                                }
                                ma_device__set_state(pDevice, ma_device_state_stopped);
                            }
                        }
                    }

                    ma_device__on_notification_rerouted(pDevice);
                }
            }
        }
    }
    ma_mutex_unlock(&g_DeviceTrackingMutex_CoreAudio);

    /* Unused parameters. */
    (void)objectID;
    (void)pUserData;

    return noErr;
}

static ma_result ma_context__init_device_tracking__coreaudio(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);

    ma_spinlock_lock(&g_DeviceTrackingInitLock_CoreAudio);
    {
        /* Don't do anything if we've already initialized device tracking. */
        if (g_DeviceTrackingInitCounter_CoreAudio == 0) {
            AudioObjectPropertyAddress propAddress;
            propAddress.mScope    = kAudioObjectPropertyScopeGlobal;
            propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

            ma_mutex_init(&g_DeviceTrackingMutex_CoreAudio);

            propAddress.mSelector = kAudioHardwarePropertyDefaultInputDevice;
            ((ma_AudioObjectAddPropertyListener_proc)pContext->coreaudio.AudioObjectAddPropertyListener)(kAudioObjectSystemObject, &propAddress, &ma_default_device_changed__coreaudio, NULL);

            propAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
            ((ma_AudioObjectAddPropertyListener_proc)pContext->coreaudio.AudioObjectAddPropertyListener)(kAudioObjectSystemObject, &propAddress, &ma_default_device_changed__coreaudio, NULL);

        }
        g_DeviceTrackingInitCounter_CoreAudio += 1;
    }
    ma_spinlock_unlock(&g_DeviceTrackingInitLock_CoreAudio);

    return MA_SUCCESS;
}

static ma_result ma_context__uninit_device_tracking__coreaudio(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);

    ma_spinlock_lock(&g_DeviceTrackingInitLock_CoreAudio);
    {
        if (g_DeviceTrackingInitCounter_CoreAudio > 0)
            g_DeviceTrackingInitCounter_CoreAudio -= 1;

        if (g_DeviceTrackingInitCounter_CoreAudio == 0) {
            AudioObjectPropertyAddress propAddress;
            propAddress.mScope    = kAudioObjectPropertyScopeGlobal;
            propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

            propAddress.mSelector = kAudioHardwarePropertyDefaultInputDevice;
            ((ma_AudioObjectRemovePropertyListener_proc)pContext->coreaudio.AudioObjectRemovePropertyListener)(kAudioObjectSystemObject, &propAddress, &ma_default_device_changed__coreaudio, NULL);

            propAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
            ((ma_AudioObjectRemovePropertyListener_proc)pContext->coreaudio.AudioObjectRemovePropertyListener)(kAudioObjectSystemObject, &propAddress, &ma_default_device_changed__coreaudio, NULL);

            /* At this point there should be no tracked devices. If not there's an error somewhere. */
            if (g_ppTrackedDevices_CoreAudio != NULL) {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "You have uninitialized all contexts while an associated device is still active.");
                ma_spinlock_unlock(&g_DeviceTrackingInitLock_CoreAudio);
                return MA_INVALID_OPERATION;
            }

            ma_mutex_uninit(&g_DeviceTrackingMutex_CoreAudio);
        }
    }
    ma_spinlock_unlock(&g_DeviceTrackingInitLock_CoreAudio);

    return MA_SUCCESS;
}

static ma_result ma_device__track__coreaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    ma_mutex_lock(&g_DeviceTrackingMutex_CoreAudio);
    {
        /* Allocate memory if required. */
        if (g_TrackedDeviceCap_CoreAudio <= g_TrackedDeviceCount_CoreAudio) {
            ma_uint32 newCap;
            ma_device** ppNewDevices;

            newCap = g_TrackedDeviceCap_CoreAudio * 2;
            if (newCap == 0) {
                newCap = 1;
            }

            ppNewDevices = (ma_device**)ma_realloc(g_ppTrackedDevices_CoreAudio, sizeof(*g_ppTrackedDevices_CoreAudio)*newCap, &pDevice->pContext->allocationCallbacks);
            if (ppNewDevices == NULL) {
                ma_mutex_unlock(&g_DeviceTrackingMutex_CoreAudio);
                return MA_OUT_OF_MEMORY;
            }

            g_ppTrackedDevices_CoreAudio = ppNewDevices;
            g_TrackedDeviceCap_CoreAudio = newCap;
        }

        g_ppTrackedDevices_CoreAudio[g_TrackedDeviceCount_CoreAudio] = pDevice;
        g_TrackedDeviceCount_CoreAudio += 1;
    }
    ma_mutex_unlock(&g_DeviceTrackingMutex_CoreAudio);

    return MA_SUCCESS;
}

static ma_result ma_device__untrack__coreaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    ma_mutex_lock(&g_DeviceTrackingMutex_CoreAudio);
    {
        ma_uint32 iDevice;
        for (iDevice = 0; iDevice < g_TrackedDeviceCount_CoreAudio; iDevice += 1) {
            if (g_ppTrackedDevices_CoreAudio[iDevice] == pDevice) {
                /* We've found the device. We now need to remove it from the list. */
                ma_uint32 jDevice;
                for (jDevice = iDevice; jDevice < g_TrackedDeviceCount_CoreAudio-1; jDevice += 1) {
                    g_ppTrackedDevices_CoreAudio[jDevice] = g_ppTrackedDevices_CoreAudio[jDevice+1];
                }

                g_TrackedDeviceCount_CoreAudio -= 1;

                /* If there's nothing else in the list we need to free memory. */
                if (g_TrackedDeviceCount_CoreAudio == 0) {
                    ma_free(g_ppTrackedDevices_CoreAudio, &pDevice->pContext->allocationCallbacks);
                    g_ppTrackedDevices_CoreAudio = NULL;
                    g_TrackedDeviceCap_CoreAudio = 0;
                }

                break;
            }
        }
    }
    ma_mutex_unlock(&g_DeviceTrackingMutex_CoreAudio);

    return MA_SUCCESS;
}
#endif

#if defined(MA_APPLE_MOBILE)
@interface ma_ios_notification_handler:NSObject {
    ma_device* m_pDevice;
}
@end

@implementation ma_ios_notification_handler
-(id)init:(ma_device*)pDevice
{
    self = [super init];
    m_pDevice = pDevice;

    /* For route changes. */
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handle_route_change:) name:AVAudioSessionRouteChangeNotification object:[AVAudioSession sharedInstance]];

    /* For interruptions. */
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handle_interruption:) name:AVAudioSessionInterruptionNotification object:[AVAudioSession sharedInstance]];

    return self;
}

-(void)dealloc
{
    [self remove_handler];

    #if defined(__has_feature)
        #if !__has_feature(objc_arc)
            [super dealloc];
        #endif
    #endif
}

-(void)remove_handler
{
    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVAudioSessionRouteChangeNotification object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVAudioSessionInterruptionNotification object:nil];
}

-(void)handle_interruption:(NSNotification*)pNotification
{
    NSInteger type = [[[pNotification userInfo] objectForKey:AVAudioSessionInterruptionTypeKey] integerValue];
    switch (type)
    {
        case AVAudioSessionInterruptionTypeBegan:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Interruption: AVAudioSessionInterruptionTypeBegan\n");

            /*
            Core Audio will have stopped the internal device automatically, but we need explicitly
            stop it at a higher level to ensure miniaudio-specific state is updated for consistency.
            */
            ma_device_stop(m_pDevice);

            /*
            Fire the notification after the device has been stopped to ensure it's in the correct
            state when the notification handler is invoked.
            */
            ma_device__on_notification_interruption_began(m_pDevice);
        } break;

        case AVAudioSessionInterruptionTypeEnded:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Interruption: AVAudioSessionInterruptionTypeEnded\n");
            ma_device__on_notification_interruption_ended(m_pDevice);
        } break;
    }
}

-(void)handle_route_change:(NSNotification*)pNotification
{
    AVAudioSession* pSession = [AVAudioSession sharedInstance];

    NSInteger reason = [[[pNotification userInfo] objectForKey:AVAudioSessionRouteChangeReasonKey] integerValue];
    switch (reason)
    {
        case AVAudioSessionRouteChangeReasonOldDeviceUnavailable:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonOldDeviceUnavailable\n");
        } break;

        case AVAudioSessionRouteChangeReasonNewDeviceAvailable:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonNewDeviceAvailable\n");
        } break;

        case AVAudioSessionRouteChangeReasonNoSuitableRouteForCategory:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonNoSuitableRouteForCategory\n");
        } break;

        case AVAudioSessionRouteChangeReasonWakeFromSleep:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonWakeFromSleep\n");
        } break;

        case AVAudioSessionRouteChangeReasonOverride:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonOverride\n");
        } break;

        case AVAudioSessionRouteChangeReasonCategoryChange:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonCategoryChange\n");
        } break;

        case AVAudioSessionRouteChangeReasonUnknown:
        default:
        {
            ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_INFO, "[Core Audio] Route Changed: AVAudioSessionRouteChangeReasonUnknown\n");
        } break;
    }

    ma_log_postf(ma_device_get_log(m_pDevice), MA_LOG_LEVEL_DEBUG, "[Core Audio] Changing Route. inputNumberChannels=%d; outputNumberOfChannels=%d\n", (int)pSession.inputNumberOfChannels, (int)pSession.outputNumberOfChannels);

    /* Let the application know about the route change. */
    ma_device__on_notification_rerouted(m_pDevice);
}
@end
#endif

static ma_result ma_device_uninit__coreaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(ma_device_get_state(pDevice) == ma_device_state_uninitialized);

#if defined(MA_APPLE_DESKTOP)
    /*
    Make sure we're no longer tracking the device. It doesn't matter if we call this for a non-default device because it'll
    just gracefully ignore it.
    */
    ma_device__untrack__coreaudio(pDevice);
#endif
#if defined(MA_APPLE_MOBILE)
    if (pDevice->coreaudio.pNotificationHandler != NULL) {
        ma_ios_notification_handler* pNotificationHandler = (MA_BRIDGE_TRANSFER ma_ios_notification_handler*)pDevice->coreaudio.pNotificationHandler;
        [pNotificationHandler remove_handler];
    }
#endif

    if (pDevice->coreaudio.audioUnitCapture != NULL) {
        ((ma_AudioComponentInstanceDispose_proc)pDevice->pContext->coreaudio.AudioComponentInstanceDispose)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
    }
    if (pDevice->coreaudio.audioUnitPlayback != NULL) {
        ((ma_AudioComponentInstanceDispose_proc)pDevice->pContext->coreaudio.AudioComponentInstanceDispose)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
    }

    if (pDevice->coreaudio.pAudioBufferList) {
        ma_free(pDevice->coreaudio.pAudioBufferList, &pDevice->pContext->allocationCallbacks);
    }

    return MA_SUCCESS;
}

typedef struct
{
    ma_bool32 allowNominalSampleRateChange;

    /* Input. */
    ma_format formatIn;
    ma_uint32 channelsIn;
    ma_uint32 sampleRateIn;
    ma_channel channelMapIn[MA_MAX_CHANNELS];
    ma_uint32 periodSizeInFramesIn;
    ma_uint32 periodSizeInMillisecondsIn;
    ma_uint32 periodsIn;
    ma_share_mode shareMode;
    ma_performance_profile performanceProfile;
    ma_bool32 registerStopEvent;

    /* Output. */
#if defined(MA_APPLE_DESKTOP)
    AudioObjectID deviceObjectID;
#endif
    AudioComponent component;
    AudioUnit audioUnit;
    AudioBufferList* pAudioBufferList;  /* Only used for input devices. */
    ma_format formatOut;
    ma_uint32 channelsOut;
    ma_uint32 sampleRateOut;
    ma_channel channelMapOut[MA_MAX_CHANNELS];
    ma_uint32 periodSizeInFramesOut;
    ma_uint32 periodsOut;
    char deviceName[256];
} ma_device_init_internal_data__coreaudio;

static ma_result ma_device_init_internal__coreaudio(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_init_internal_data__coreaudio* pData, void* pDevice_DoNotReference)   /* <-- pDevice is typed as void* intentionally so as to avoid accidentally referencing it. */
{
    ma_result result = MA_SUCCESS;
    OSStatus status;
    UInt32 enableIOFlag;
    AudioStreamBasicDescription bestFormat;
    ma_uint32 actualPeriodSizeInFrames;
    AURenderCallbackStruct callbackInfo;
#if defined(MA_APPLE_DESKTOP)
    AudioObjectID deviceObjectID;
#endif

    /* This API should only be used for a single device type: playback or capture. No full-duplex mode. */
    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(deviceType == ma_device_type_playback || deviceType == ma_device_type_capture);

#if defined(MA_APPLE_DESKTOP)
    pData->deviceObjectID = 0;
#endif
    pData->component = NULL;
    pData->audioUnit = NULL;
    pData->pAudioBufferList = NULL;

#if defined(MA_APPLE_DESKTOP)
    result = ma_find_AudioObjectID(pContext, deviceType, pDeviceID, &deviceObjectID);
    if (result != MA_SUCCESS) {
        return result;
    }

    pData->deviceObjectID = deviceObjectID;
#endif

    /* Core audio doesn't really use the notion of a period so we can leave this unmodified, but not too over the top. */
    pData->periodsOut = pData->periodsIn;
    if (pData->periodsOut == 0) {
        pData->periodsOut = MA_DEFAULT_PERIODS;
    }
    if (pData->periodsOut > 16) {
        pData->periodsOut = 16;
    }


    /* Audio unit. */
    status = ((ma_AudioComponentInstanceNew_proc)pContext->coreaudio.AudioComponentInstanceNew)((AudioComponent)pContext->coreaudio.component, (AudioUnit*)&pData->audioUnit);
    if (status != noErr) {
        return ma_result_from_OSStatus(status);
    }


    /* The input/output buses need to be explicitly enabled and disabled. We set the flag based on the output unit first, then we just swap it for input. */
    enableIOFlag = 1;
    if (deviceType == ma_device_type_capture) {
        enableIOFlag = 0;
    }

    status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, MA_COREAUDIO_OUTPUT_BUS, &enableIOFlag, sizeof(enableIOFlag));
    if (status != noErr) {
        ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
        return ma_result_from_OSStatus(status);
    }

    enableIOFlag = (enableIOFlag == 0) ? 1 : 0;
    status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, MA_COREAUDIO_INPUT_BUS, &enableIOFlag, sizeof(enableIOFlag));
    if (status != noErr) {
        ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
        return ma_result_from_OSStatus(status);
    }


    /* Set the device to use with this audio unit. This is only used on desktop since we are using defaults on mobile. */
#if defined(MA_APPLE_DESKTOP)
    status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &deviceObjectID, sizeof(deviceObjectID));
    if (status != noErr) {
        ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
        return ma_result_from_OSStatus(result);
    }
#else
    /*
    For some reason it looks like Apple is only allowing selection of the input device. There does not appear to be any way to change
    the default output route. I have no idea why this is like this, but for now we'll only be able to configure capture devices.
    */
    if (pDeviceID != NULL) {
        if (deviceType == ma_device_type_capture) {
            ma_bool32 found = MA_FALSE;
            NSArray *pInputs = [[[AVAudioSession sharedInstance] currentRoute] inputs];
            for (AVAudioSessionPortDescription* pPortDesc in pInputs) {
                if (strcmp(pDeviceID->coreaudio, [pPortDesc.UID UTF8String]) == 0) {
                    [[AVAudioSession sharedInstance] setPreferredInput:pPortDesc error:nil];
                    found = MA_TRUE;
                    break;
                }
            }

            if (found == MA_FALSE) {
                return MA_DOES_NOT_EXIST;
            }
        }
    }
#endif

    /*
    Format. This is the hardest part of initialization because there's a few variables to take into account.
      1) The format must be supported by the device.
      2) The format must be supported miniaudio.
      3) There's a priority that miniaudio prefers.

    Ideally we would like to use a format that's as close to the hardware as possible so we can get as close to a passthrough as possible. The
    most important property is the sample rate. miniaudio can do format conversion for any sample rate and channel count, but cannot do the same
    for the sample data format. If the sample data format is not supported by miniaudio it must be ignored completely.

    On mobile platforms this is a bit different. We just force the use of whatever the audio unit's current format is set to.
    */
    {
        AudioStreamBasicDescription origFormat;
        UInt32 origFormatSize = sizeof(origFormat);
        AudioUnitScope   formatScope   = (deviceType == ma_device_type_playback) ? kAudioUnitScope_Input : kAudioUnitScope_Output;
        AudioUnitElement formatElement = (deviceType == ma_device_type_playback) ? MA_COREAUDIO_OUTPUT_BUS : MA_COREAUDIO_INPUT_BUS;

        if (deviceType == ma_device_type_playback) {
            status = ((ma_AudioUnitGetProperty_proc)pContext->coreaudio.AudioUnitGetProperty)(pData->audioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, MA_COREAUDIO_OUTPUT_BUS, &origFormat, &origFormatSize);
        } else {
            status = ((ma_AudioUnitGetProperty_proc)pContext->coreaudio.AudioUnitGetProperty)(pData->audioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, MA_COREAUDIO_INPUT_BUS, &origFormat, &origFormatSize);
        }
        if (status != noErr) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return ma_result_from_OSStatus(status);
        }

    #if defined(MA_APPLE_DESKTOP)
        result = ma_find_best_format__coreaudio(pContext, deviceObjectID, deviceType, pData->formatIn, pData->channelsIn, pData->sampleRateIn, &origFormat, &bestFormat);
        if (result != MA_SUCCESS) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return result;
        }

        /*
        Technical Note TN2091: Device input using the HAL Output Audio Unit
            https://developer.apple.com/library/archive/technotes/tn2091/_index.html

        This documentation says the following:

            The internal AudioConverter can handle any *simple* conversion. Typically, this means that a client can specify ANY
            variant of the PCM formats. Consequently, the device's sample rate should match the desired sample rate. If sample rate
            conversion is needed, it can be accomplished by buffering the input and converting the data on a separate thread with
            another AudioConverter.

        The important part here is the mention that it can handle *simple* conversions, which does *not* include sample rate. We
        therefore want to ensure the sample rate stays consistent. This document is specifically for input, but I'm going to play it
        safe and apply the same rule to output as well.

        I have tried going against the documentation by setting the sample rate anyway, but this just results in AudioUnitRender()
        returning a result code of -10863. I have also tried changing the format directly on the input scope on the input bus, but
        this just results in `ca_require: IsStreamFormatWritable(inScope, inElement) NotWritable` when trying to set the format.

        Something that does seem to work, however, has been setting the nominal sample rate on the device object. The problem with
        this, however, is that it actually changes the sample rate at the operating system level and not just the application. This
        could be intrusive to the user, however, so I don't think it's wise to make this the default. Instead I'm making this a
        configuration option. When the `coreaudio.allowNominalSampleRateChange` config option is set to true, changing the sample
        rate will be allowed. Otherwise it'll be fixed to the current sample rate. To check the system-defined sample rate, run
        the Audio MIDI Setup program that comes installed on macOS and observe how the sample rate changes as the sample rate is
        changed by miniaudio.
        */
        if (pData->allowNominalSampleRateChange) {
            AudioValueRange sampleRateRange;
            AudioObjectPropertyAddress propAddress;

            sampleRateRange.mMinimum = bestFormat.mSampleRate;
            sampleRateRange.mMaximum = bestFormat.mSampleRate;

            propAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
            propAddress.mScope    = (deviceType == ma_device_type_playback) ? kAudioObjectPropertyScopeOutput : kAudioObjectPropertyScopeInput;
            propAddress.mElement  = AUDIO_OBJECT_PROPERTY_ELEMENT;

            status = ((ma_AudioObjectSetPropertyData_proc)pContext->coreaudio.AudioObjectSetPropertyData)(deviceObjectID, &propAddress, 0, NULL, sizeof(sampleRateRange), &sampleRateRange);
            if (status != noErr) {
                bestFormat.mSampleRate = origFormat.mSampleRate;
            }
        } else {
            bestFormat.mSampleRate = origFormat.mSampleRate;
        }

        status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioUnitProperty_StreamFormat, formatScope, formatElement, &bestFormat, sizeof(bestFormat));
        if (status != noErr) {
            /* We failed to set the format, so fall back to the current format of the audio unit. */
            bestFormat = origFormat;
        }
    #else
        bestFormat = origFormat;

        /*
        Sample rate is a little different here because for some reason kAudioUnitProperty_StreamFormat returns 0... Oh well. We need to instead try
        setting the sample rate to what the user has requested and then just see the results of it. Need to use some Objective-C here for this since
        it depends on Apple's AVAudioSession API. To do this we just get the shared AVAudioSession instance and then set it. Note that from what I
        can tell, it looks like the sample rate is shared between playback and capture for everything.
        */
        @autoreleasepool {
            AVAudioSession* pAudioSession = [AVAudioSession sharedInstance];
            MA_ASSERT(pAudioSession != NULL);

            [pAudioSession setPreferredSampleRate:(double)pData->sampleRateIn error:nil];
            bestFormat.mSampleRate = pAudioSession.sampleRate;

            /*
            I've had a report that the channel count returned by AudioUnitGetProperty above is inconsistent with
            AVAudioSession outputNumberOfChannels. I'm going to try using the AVAudioSession values instead.

            UPDATE 20/02/2025:
            When testing on the simulator with an iPhone 15 and iOS 17 I get an error when initializing the audio
            unit if set the input channels to pAudioSession.inputNumberOfChannels. What is happening is the channel
            count returned from AudioUnitGetProperty() above is set to 2, but pAudioSession is reporting a channel
            count of 1. When this happens, the call to AudioUnitSetProprty() below just down below will succeed, but
            AudioUnitInitialize() further down will fail. The only solution I have come up with is to not set the
            channel count to pAudioSession.inputNumberOfChannels.
            */
            if (deviceType == ma_device_type_playback) {
                bestFormat.mChannelsPerFrame = (UInt32)pAudioSession.outputNumberOfChannels;
            }

            #if 0
            if (deviceType == ma_device_type_capture) {
                /*printf("DEBUG: bestFormat.mChannelsPerFrame = %d; pAudioSession.inputNumberOfChannels = %d\n", (int)bestFormat.mChannelsPerFrame, (int)pAudioSession.inputNumberOfChannels);*/
                bestFormat.mChannelsPerFrame = (UInt32)pAudioSession.inputNumberOfChannels;
            }
            #endif
        }

        
        status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioUnitProperty_StreamFormat, formatScope, formatElement, &bestFormat, sizeof(bestFormat));
        if (status != noErr) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return ma_result_from_OSStatus(status);
        }
    #endif

        result = ma_format_from_AudioStreamBasicDescription(&bestFormat, &pData->formatOut);
        if (result != MA_SUCCESS) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return result;
        }

        if (pData->formatOut == ma_format_unknown) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return MA_FORMAT_NOT_SUPPORTED;
        }

        pData->channelsOut   = bestFormat.mChannelsPerFrame;
        pData->sampleRateOut = (ma_uint32)bestFormat.mSampleRate;
    }

    /* Clamp the channel count for safety. */
    if (pData->channelsOut > MA_MAX_CHANNELS) {
        pData->channelsOut = MA_MAX_CHANNELS;
    }

    /*
    Internal channel map. This is weird in my testing. If I use the AudioObject to get the
    channel map, the channel descriptions are set to "Unknown" for some reason. To work around
    this it looks like retrieving it from the AudioUnit will work. However, and this is where
    it gets weird, it doesn't seem to work with capture devices, nor at all on iOS... Therefore
    I'm going to fall back to a default assumption in these cases.
    */
#if defined(MA_APPLE_DESKTOP)
    result = ma_get_AudioUnit_channel_map(pContext, pData->audioUnit, deviceType, pData->channelMapOut, pData->channelsOut);
    if (result != MA_SUCCESS) {
    #if 0
        /* Try falling back to the channel map from the AudioObject. */
        result = ma_get_AudioObject_channel_map(pContext, deviceObjectID, deviceType, pData->channelMapOut, pData->channelsOut);
        if (result != MA_SUCCESS) {
            return result;
        }
    #else
        /* Fall back to default assumptions. */
        ma_channel_map_init_standard(ma_standard_channel_map_default, pData->channelMapOut, ma_countof(pData->channelMapOut), pData->channelsOut);
    #endif
    }
#else
    /* TODO: Figure out how to get the channel map using AVAudioSession. */
    ma_channel_map_init_standard(ma_standard_channel_map_default, pData->channelMapOut, ma_countof(pData->channelMapOut), pData->channelsOut);
#endif


    /* Buffer size. Not allowing this to be configurable on iOS. */
    if (pData->periodSizeInFramesIn == 0) {
        if (pData->periodSizeInMillisecondsIn == 0) {
            if (pData->performanceProfile == ma_performance_profile_low_latency) {
                actualPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY, pData->sampleRateOut);
            } else {
                actualPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE, pData->sampleRateOut);
            }
        } else {
            actualPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(pData->periodSizeInMillisecondsIn, pData->sampleRateOut);
        }
    } else {
        actualPeriodSizeInFrames = pData->periodSizeInFramesIn;
    }

#if defined(MA_APPLE_DESKTOP)
    result = ma_set_AudioObject_buffer_size_in_frames(pContext, deviceObjectID, deviceType, &actualPeriodSizeInFrames);
    if (result != MA_SUCCESS) {
        return result;
    }
#else
    /*
    On iOS, the size of the IO buffer needs to be specified in seconds and is a floating point
    number. I don't trust any potential truncation errors due to converting from float to integer
    so I'm going to explicitly set the actual period size to the next power of 2.
    */
    @autoreleasepool {
        AVAudioSession* pAudioSession = [AVAudioSession sharedInstance];
        MA_ASSERT(pAudioSession != NULL);

        [pAudioSession setPreferredIOBufferDuration:((float)actualPeriodSizeInFrames / pAudioSession.sampleRate) error:nil];
        actualPeriodSizeInFrames = ma_next_power_of_2((ma_uint32)(pAudioSession.IOBufferDuration * pAudioSession.sampleRate));
    }
#endif


    /*
    During testing I discovered that the buffer size can be too big. You'll get an error like this:

      kAudioUnitErr_TooManyFramesToProcess : inFramesToProcess=4096, mMaxFramesPerSlice=512

    Note how inFramesToProcess is smaller than mMaxFramesPerSlice. To fix, we need to set kAudioUnitProperty_MaximumFramesPerSlice to that
    of the size of our buffer, or do it the other way around and set our buffer size to the kAudioUnitProperty_MaximumFramesPerSlice.
    */
    status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global, 0, &actualPeriodSizeInFrames, sizeof(actualPeriodSizeInFrames));
    if (status != noErr) {
        ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
        return ma_result_from_OSStatus(status);
    }

    pData->periodSizeInFramesOut = (ma_uint32)actualPeriodSizeInFrames;

    /* We need a buffer list if this is an input device. We render into this in the input callback. */
    if (deviceType == ma_device_type_capture) {
        ma_bool32 isInterleaved = (bestFormat.mFormatFlags & kAudioFormatFlagIsNonInterleaved) == 0;
        AudioBufferList* pBufferList;

        pBufferList = ma_allocate_AudioBufferList__coreaudio(pData->periodSizeInFramesOut, pData->formatOut, pData->channelsOut, (isInterleaved) ? ma_stream_layout_interleaved : ma_stream_layout_deinterleaved, &pContext->allocationCallbacks);
        if (pBufferList == NULL) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return MA_OUT_OF_MEMORY;
        }

        pData->pAudioBufferList = pBufferList;
    }

    /* Callbacks. */
    callbackInfo.inputProcRefCon = pDevice_DoNotReference;
    if (deviceType == ma_device_type_playback) {
        callbackInfo.inputProc = ma_on_output__coreaudio;
        status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Global, 0, &callbackInfo, sizeof(callbackInfo));
        if (status != noErr) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return ma_result_from_OSStatus(status);
        }
    } else {
        callbackInfo.inputProc = ma_on_input__coreaudio;
        status = ((ma_AudioUnitSetProperty_proc)pContext->coreaudio.AudioUnitSetProperty)(pData->audioUnit, kAudioOutputUnitProperty_SetInputCallback, kAudioUnitScope_Global, 0, &callbackInfo, sizeof(callbackInfo));
        if (status != noErr) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return ma_result_from_OSStatus(status);
        }
    }

    /* We need to listen for stop events. */
    if (pData->registerStopEvent) {
        status = ((ma_AudioUnitAddPropertyListener_proc)pContext->coreaudio.AudioUnitAddPropertyListener)(pData->audioUnit, kAudioOutputUnitProperty_IsRunning, on_start_stop__coreaudio, pDevice_DoNotReference);
        if (status != noErr) {
            ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
            return ma_result_from_OSStatus(status);
        }
    }

    /* Initialize the audio unit. */
    status = ((ma_AudioUnitInitialize_proc)pContext->coreaudio.AudioUnitInitialize)(pData->audioUnit);
    if (status != noErr) {
        ma_free(pData->pAudioBufferList, &pContext->allocationCallbacks);
        pData->pAudioBufferList = NULL;
        ((ma_AudioComponentInstanceDispose_proc)pContext->coreaudio.AudioComponentInstanceDispose)(pData->audioUnit);
        return ma_result_from_OSStatus(status);
    }

    /* Grab the name. */
#if defined(MA_APPLE_DESKTOP)
    ma_get_AudioObject_name(pContext, deviceObjectID, sizeof(pData->deviceName), pData->deviceName);
#else
    if (deviceType == ma_device_type_playback) {
        ma_strcpy_s(pData->deviceName, sizeof(pData->deviceName), MA_DEFAULT_PLAYBACK_DEVICE_NAME);
    } else {
        ma_strcpy_s(pData->deviceName, sizeof(pData->deviceName), MA_DEFAULT_CAPTURE_DEVICE_NAME);
    }
#endif

    return result;
}

#if defined(MA_APPLE_DESKTOP)
static ma_result ma_device_reinit_internal__coreaudio(ma_device* pDevice, ma_device_type deviceType, ma_bool32 disposePreviousAudioUnit)
{
    ma_device_init_internal_data__coreaudio data;
    ma_result result;

    /* This should only be called for playback or capture, not duplex. */
    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }

    data.allowNominalSampleRateChange = MA_FALSE;   /* Don't change the nominal sample rate when switching devices. */

    if (deviceType == ma_device_type_capture) {
        data.formatIn               = pDevice->capture.format;
        data.channelsIn             = pDevice->capture.channels;
        data.sampleRateIn           = pDevice->sampleRate;
        MA_COPY_MEMORY(data.channelMapIn, pDevice->capture.channelMap, sizeof(pDevice->capture.channelMap));
        data.shareMode              = pDevice->capture.shareMode;
        data.performanceProfile     = pDevice->coreaudio.originalPerformanceProfile;
        data.registerStopEvent      = MA_TRUE;

        if (disposePreviousAudioUnit) {
            ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
            ((ma_AudioComponentInstanceDispose_proc)pDevice->pContext->coreaudio.AudioComponentInstanceDispose)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
        }
        if (pDevice->coreaudio.pAudioBufferList) {
            ma_free(pDevice->coreaudio.pAudioBufferList, &pDevice->pContext->allocationCallbacks);
        }
    } else if (deviceType == ma_device_type_playback) {
        data.formatIn               = pDevice->playback.format;
        data.channelsIn             = pDevice->playback.channels;
        data.sampleRateIn           = pDevice->sampleRate;
        MA_COPY_MEMORY(data.channelMapIn, pDevice->playback.channelMap, sizeof(pDevice->playback.channelMap));
        data.shareMode              = pDevice->playback.shareMode;
        data.performanceProfile     = pDevice->coreaudio.originalPerformanceProfile;
        data.registerStopEvent      = (pDevice->type != ma_device_type_duplex);

        if (disposePreviousAudioUnit) {
            ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
            ((ma_AudioComponentInstanceDispose_proc)pDevice->pContext->coreaudio.AudioComponentInstanceDispose)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
        }
    }
    data.periodSizeInFramesIn       = pDevice->coreaudio.originalPeriodSizeInFrames;
    data.periodSizeInMillisecondsIn = pDevice->coreaudio.originalPeriodSizeInMilliseconds;
    data.periodsIn                  = pDevice->coreaudio.originalPeriods;

    /* Need at least 3 periods for duplex. */
    if (data.periodsIn < 3 && pDevice->type == ma_device_type_duplex) {
        data.periodsIn = 3;
    }

    result = ma_device_init_internal__coreaudio(pDevice->pContext, deviceType, NULL, &data, (void*)pDevice);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (deviceType == ma_device_type_capture) {
    #if defined(MA_APPLE_DESKTOP)
        pDevice->coreaudio.deviceObjectIDCapture     = (ma_uint32)data.deviceObjectID;
        ma_get_AudioObject_uid(pDevice->pContext, pDevice->coreaudio.deviceObjectIDCapture, sizeof(pDevice->capture.id.coreaudio), pDevice->capture.id.coreaudio);
    #endif
        pDevice->coreaudio.audioUnitCapture          = (ma_ptr)data.audioUnit;
        pDevice->coreaudio.pAudioBufferList          = (ma_ptr)data.pAudioBufferList;
        pDevice->coreaudio.audioBufferCapInFrames    = data.periodSizeInFramesOut;

        pDevice->capture.internalFormat              = data.formatOut;
        pDevice->capture.internalChannels            = data.channelsOut;
        pDevice->capture.internalSampleRate          = data.sampleRateOut;
        MA_COPY_MEMORY(pDevice->capture.internalChannelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDevice->capture.internalPeriodSizeInFrames  = data.periodSizeInFramesOut;
        pDevice->capture.internalPeriods             = data.periodsOut;
    } else if (deviceType == ma_device_type_playback) {
    #if defined(MA_APPLE_DESKTOP)
        pDevice->coreaudio.deviceObjectIDPlayback    = (ma_uint32)data.deviceObjectID;
        ma_get_AudioObject_uid(pDevice->pContext, pDevice->coreaudio.deviceObjectIDPlayback, sizeof(pDevice->playback.id.coreaudio), pDevice->playback.id.coreaudio);
    #endif
        pDevice->coreaudio.audioUnitPlayback         = (ma_ptr)data.audioUnit;

        pDevice->playback.internalFormat             = data.formatOut;
        pDevice->playback.internalChannels           = data.channelsOut;
        pDevice->playback.internalSampleRate         = data.sampleRateOut;
        MA_COPY_MEMORY(pDevice->playback.internalChannelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDevice->playback.internalPeriodSizeInFrames = data.periodSizeInFramesOut;
        pDevice->playback.internalPeriods            = data.periodsOut;
    }

    return MA_SUCCESS;
}
#endif /* MA_APPLE_DESKTOP */

static ma_result ma_device_init__coreaudio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pConfig != NULL);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /* No exclusive mode with the Core Audio backend for now. */
    if (((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->shareMode  == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->shareMode == ma_share_mode_exclusive)) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    /* Capture needs to be initialized first. */
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_device_init_internal_data__coreaudio data;
        data.allowNominalSampleRateChange = pConfig->coreaudio.allowNominalSampleRateChange;
        data.formatIn                     = pDescriptorCapture->format;
        data.channelsIn                   = pDescriptorCapture->channels;
        data.sampleRateIn                 = pDescriptorCapture->sampleRate;
        MA_COPY_MEMORY(data.channelMapIn, pDescriptorCapture->channelMap, sizeof(pDescriptorCapture->channelMap));
        data.periodSizeInFramesIn         = pDescriptorCapture->periodSizeInFrames;
        data.periodSizeInMillisecondsIn   = pDescriptorCapture->periodSizeInMilliseconds;
        data.periodsIn                    = pDescriptorCapture->periodCount;
        data.shareMode                    = pDescriptorCapture->shareMode;
        data.performanceProfile           = pConfig->performanceProfile;
        data.registerStopEvent            = MA_TRUE;

        /* Need at least 3 periods for duplex. */
        if (data.periodsIn < 3 && pConfig->deviceType == ma_device_type_duplex) {
            data.periodsIn = 3;
        }

        result = ma_device_init_internal__coreaudio(pDevice->pContext, ma_device_type_capture, pDescriptorCapture->pDeviceID, &data, (void*)pDevice);
        if (result != MA_SUCCESS) {
            return result;
        }

        pDevice->coreaudio.isDefaultCaptureDevice           = (pConfig->capture.pDeviceID == NULL);
    #if defined(MA_APPLE_DESKTOP)
        pDevice->coreaudio.deviceObjectIDCapture            = (ma_uint32)data.deviceObjectID;
    #endif
        pDevice->coreaudio.audioUnitCapture                 = (ma_ptr)data.audioUnit;
        pDevice->coreaudio.pAudioBufferList                 = (ma_ptr)data.pAudioBufferList;
        pDevice->coreaudio.audioBufferCapInFrames           = data.periodSizeInFramesOut;
        pDevice->coreaudio.originalPeriodSizeInFrames       = pDescriptorCapture->periodSizeInFrames;
        pDevice->coreaudio.originalPeriodSizeInMilliseconds = pDescriptorCapture->periodSizeInMilliseconds;
        pDevice->coreaudio.originalPeriods                  = pDescriptorCapture->periodCount;
        pDevice->coreaudio.originalPerformanceProfile       = pConfig->performanceProfile;

        pDescriptorCapture->format                          = data.formatOut;
        pDescriptorCapture->channels                        = data.channelsOut;
        pDescriptorCapture->sampleRate                      = data.sampleRateOut;
        MA_COPY_MEMORY(pDescriptorCapture->channelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDescriptorCapture->periodSizeInFrames              = data.periodSizeInFramesOut;
        pDescriptorCapture->periodCount                     = data.periodsOut;

    #if defined(MA_APPLE_DESKTOP)
        ma_get_AudioObject_uid(pDevice->pContext, pDevice->coreaudio.deviceObjectIDCapture, sizeof(pDevice->capture.id.coreaudio), pDevice->capture.id.coreaudio);

        /*
        If we are using the default device we'll need to listen for changes to the system's default device so we can seamlessly
        switch the device in the background.
        */
        if (pConfig->capture.pDeviceID == NULL) {
            ma_device__track__coreaudio(pDevice);
        }
    #endif
    }

    /* Playback. */
    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_device_init_internal_data__coreaudio data;
        data.allowNominalSampleRateChange   = pConfig->coreaudio.allowNominalSampleRateChange;
        data.formatIn                       = pDescriptorPlayback->format;
        data.channelsIn                     = pDescriptorPlayback->channels;
        data.sampleRateIn                   = pDescriptorPlayback->sampleRate;
        MA_COPY_MEMORY(data.channelMapIn, pDescriptorPlayback->channelMap, sizeof(pDescriptorPlayback->channelMap));
        data.shareMode                      = pDescriptorPlayback->shareMode;
        data.performanceProfile             = pConfig->performanceProfile;

        /* In full-duplex mode we want the playback buffer to be the same size as the capture buffer. */
        if (pConfig->deviceType == ma_device_type_duplex) {
            data.periodSizeInFramesIn       = pDescriptorCapture->periodSizeInFrames;
            data.periodsIn                  = pDescriptorCapture->periodCount;
            data.registerStopEvent          = MA_FALSE;
        } else {
            data.periodSizeInFramesIn       = pDescriptorPlayback->periodSizeInFrames;
            data.periodSizeInMillisecondsIn = pDescriptorPlayback->periodSizeInMilliseconds;
            data.periodsIn                  = pDescriptorPlayback->periodCount;
            data.registerStopEvent          = MA_TRUE;
        }

        result = ma_device_init_internal__coreaudio(pDevice->pContext, ma_device_type_playback, pDescriptorPlayback->pDeviceID, &data, (void*)pDevice);
        if (result != MA_SUCCESS) {
            if (pConfig->deviceType == ma_device_type_duplex) {
                ((ma_AudioComponentInstanceDispose_proc)pDevice->pContext->coreaudio.AudioComponentInstanceDispose)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
                if (pDevice->coreaudio.pAudioBufferList) {
                    ma_free(pDevice->coreaudio.pAudioBufferList, &pDevice->pContext->allocationCallbacks);
                }
            }
            return result;
        }

        pDevice->coreaudio.isDefaultPlaybackDevice          = (pConfig->playback.pDeviceID == NULL);
    #if defined(MA_APPLE_DESKTOP)
        pDevice->coreaudio.deviceObjectIDPlayback           = (ma_uint32)data.deviceObjectID;
    #endif
        pDevice->coreaudio.audioUnitPlayback                = (ma_ptr)data.audioUnit;
        pDevice->coreaudio.originalPeriodSizeInFrames       = pDescriptorPlayback->periodSizeInFrames;
        pDevice->coreaudio.originalPeriodSizeInMilliseconds = pDescriptorPlayback->periodSizeInMilliseconds;
        pDevice->coreaudio.originalPeriods                  = pDescriptorPlayback->periodCount;
        pDevice->coreaudio.originalPerformanceProfile       = pConfig->performanceProfile;

        pDescriptorPlayback->format                         = data.formatOut;
        pDescriptorPlayback->channels                       = data.channelsOut;
        pDescriptorPlayback->sampleRate                     = data.sampleRateOut;
        MA_COPY_MEMORY(pDescriptorPlayback->channelMap, data.channelMapOut, sizeof(data.channelMapOut));
        pDescriptorPlayback->periodSizeInFrames             = data.periodSizeInFramesOut;
        pDescriptorPlayback->periodCount                    = data.periodsOut;

    #if defined(MA_APPLE_DESKTOP)
        ma_get_AudioObject_uid(pDevice->pContext, pDevice->coreaudio.deviceObjectIDPlayback, sizeof(pDevice->playback.id.coreaudio), pDevice->playback.id.coreaudio);

        /*
        If we are using the default device we'll need to listen for changes to the system's default device so we can seamlessly
        switch the device in the background.
        */
        if (pDescriptorPlayback->pDeviceID == NULL && (pConfig->deviceType != ma_device_type_duplex || pDescriptorCapture->pDeviceID != NULL)) {
            ma_device__track__coreaudio(pDevice);
        }
    #endif
    }



    /*
    When stopping the device, a callback is called on another thread. We need to wait for this callback
    before returning from ma_device_stop(). This event is used for this.
    */
    ma_event_init(&pDevice->coreaudio.stopEvent);

    /*
    We need to detect when a route has changed so we can update the data conversion pipeline accordingly. This is done
    differently on non-Desktop Apple platforms.
    */
#if defined(MA_APPLE_MOBILE)
    pDevice->coreaudio.pNotificationHandler = (MA_BRIDGE_RETAINED void*)[[ma_ios_notification_handler alloc] init:pDevice];
#endif

    return MA_SUCCESS;
}


static ma_result ma_device_start__coreaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        OSStatus status = ((ma_AudioOutputUnitStart_proc)pDevice->pContext->coreaudio.AudioOutputUnitStart)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
        if (status != noErr) {
            return ma_result_from_OSStatus(status);
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        OSStatus status = ((ma_AudioOutputUnitStart_proc)pDevice->pContext->coreaudio.AudioOutputUnitStart)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
        if (status != noErr) {
            if (pDevice->type == ma_device_type_duplex) {
                ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
            }
            return ma_result_from_OSStatus(status);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__coreaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /* It's not clear from the documentation whether or not AudioOutputUnitStop() actually drains the device or not. */

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        OSStatus status = ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitCapture);
        if (status != noErr) {
            return ma_result_from_OSStatus(status);
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        OSStatus status = ((ma_AudioOutputUnitStop_proc)pDevice->pContext->coreaudio.AudioOutputUnitStop)((AudioUnit)pDevice->coreaudio.audioUnitPlayback);
        if (status != noErr) {
            return ma_result_from_OSStatus(status);
        }
    }

    /* We need to wait for the callback to finish before returning. */
    ma_event_wait(&pDevice->coreaudio.stopEvent);
    return MA_SUCCESS;
}


static ma_result ma_context_uninit__coreaudio(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_coreaudio);

#if defined(MA_APPLE_MOBILE)
    if (!pContext->coreaudio.noAudioSessionDeactivate) {
        if (![[AVAudioSession sharedInstance] setActive:false error:nil]) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "Failed to deactivate audio session.");
            return MA_FAILED_TO_INIT_BACKEND;
        }
    }
#endif

#if !defined(MA_NO_RUNTIME_LINKING) && !defined(MA_APPLE_MOBILE)
    ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit);
    ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio);
    ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation);
#endif

#if !defined(MA_APPLE_MOBILE)
    ma_context__uninit_device_tracking__coreaudio(pContext);
#endif

    (void)pContext;
    return MA_SUCCESS;
}

#if defined(MA_APPLE_MOBILE) && defined(__IPHONE_12_0)
static AVAudioSessionCategory ma_to_AVAudioSessionCategory(ma_ios_session_category category)
{
    /* The "default" and "none" categories are treated different and should not be used as an input into this function. */
    MA_ASSERT(category != ma_ios_session_category_default);
    MA_ASSERT(category != ma_ios_session_category_none);

    switch (category) {
        case ma_ios_session_category_ambient:         return AVAudioSessionCategoryAmbient;
        case ma_ios_session_category_solo_ambient:    return AVAudioSessionCategorySoloAmbient;
        case ma_ios_session_category_playback:        return AVAudioSessionCategoryPlayback;
        case ma_ios_session_category_record:          return AVAudioSessionCategoryRecord;
        case ma_ios_session_category_play_and_record: return AVAudioSessionCategoryPlayAndRecord;
        case ma_ios_session_category_multi_route:     return AVAudioSessionCategoryMultiRoute;
        case ma_ios_session_category_none:            return AVAudioSessionCategoryAmbient;
        case ma_ios_session_category_default:         return AVAudioSessionCategoryAmbient;
        default:                                      return AVAudioSessionCategoryAmbient;
    }
}
#endif

static ma_result ma_context_init__coreaudio(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
#if !defined(MA_APPLE_MOBILE)
    ma_result result;
#endif

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pContext != NULL);

#if defined(MA_APPLE_MOBILE)
    @autoreleasepool {
        AVAudioSession* pAudioSession = [AVAudioSession sharedInstance];
        AVAudioSessionCategoryOptions options = pConfig->coreaudio.sessionCategoryOptions;

        MA_ASSERT(pAudioSession != NULL);

        if (pConfig->coreaudio.sessionCategory == ma_ios_session_category_default) {
            /*
            I'm going to use trial and error to determine our default session category. First we'll try PlayAndRecord. If that fails
            we'll try Playback and if that fails we'll try record. If all of these fail we'll just not set the category.
            */
        #if !defined(MA_APPLE_TV) && !defined(MA_APPLE_WATCH)
            options |= AVAudioSessionCategoryOptionDefaultToSpeaker;
        #endif

            if ([pAudioSession setCategory: AVAudioSessionCategoryPlayAndRecord withOptions:options error:nil]) {
                /* Using PlayAndRecord */
            } else if ([pAudioSession setCategory: AVAudioSessionCategoryPlayback withOptions:options error:nil]) {
                /* Using Playback */
            } else if ([pAudioSession setCategory: AVAudioSessionCategoryRecord withOptions:options error:nil]) {
                /* Using Record */
            } else {
                /* Leave as default? */
            }
        } else {
            if (pConfig->coreaudio.sessionCategory != ma_ios_session_category_none) {
            #if defined(__IPHONE_12_0)
                if (![pAudioSession setCategory: ma_to_AVAudioSessionCategory(pConfig->coreaudio.sessionCategory) withOptions:options error:nil]) {
                    return MA_INVALID_OPERATION;    /* Failed to set session category. */
                }
            #else
                /* Ignore the session category on version 11 and older, but post a warning. */
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "Session category only supported in iOS 12 and newer.");
            #endif
            }
        }

        if (!pConfig->coreaudio.noAudioSessionActivate) {
            if (![pAudioSession setActive:true error:nil]) {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "Failed to activate audio session.");
                return MA_FAILED_TO_INIT_BACKEND;
            }
        }
    }
#endif

#if !defined(MA_NO_RUNTIME_LINKING) && !defined(MA_APPLE_MOBILE)
    pContext->coreaudio.hCoreFoundation = ma_dlopen(ma_context_get_log(pContext), "/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation");
    if (pContext->coreaudio.hCoreFoundation == NULL) {
        return MA_API_NOT_FOUND;
    }

    pContext->coreaudio.CFStringGetCString = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation, "CFStringGetCString");
    pContext->coreaudio.CFRelease          = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation, "CFRelease");


    pContext->coreaudio.hCoreAudio = ma_dlopen(ma_context_get_log(pContext), "/System/Library/Frameworks/CoreAudio.framework/CoreAudio");
    if (pContext->coreaudio.hCoreAudio == NULL) {
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation);
        return MA_API_NOT_FOUND;
    }

    pContext->coreaudio.AudioObjectGetPropertyData        = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio, "AudioObjectGetPropertyData");
    pContext->coreaudio.AudioObjectGetPropertyDataSize    = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio, "AudioObjectGetPropertyDataSize");
    pContext->coreaudio.AudioObjectSetPropertyData        = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio, "AudioObjectSetPropertyData");
    pContext->coreaudio.AudioObjectAddPropertyListener    = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio, "AudioObjectAddPropertyListener");
    pContext->coreaudio.AudioObjectRemovePropertyListener = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio, "AudioObjectRemovePropertyListener");

    /*
    It looks like Apple has moved some APIs from AudioUnit into AudioToolbox on more recent versions of macOS. They are still
    defined in AudioUnit, but just in case they decide to remove them from there entirely I'm going to implement a fallback.
    The way it'll work is that it'll first try AudioUnit, and if the required symbols are not present there we'll fall back to
    AudioToolbox.
    */
    pContext->coreaudio.hAudioUnit = ma_dlopen(ma_context_get_log(pContext), "/System/Library/Frameworks/AudioUnit.framework/AudioUnit");
    if (pContext->coreaudio.hAudioUnit == NULL) {
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio);
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation);
        return MA_API_NOT_FOUND;
    }

    if (ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioComponentFindNext") == NULL) {
        /* Couldn't find the required symbols in AudioUnit, so fall back to AudioToolbox. */
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit);
        pContext->coreaudio.hAudioUnit = ma_dlopen(ma_context_get_log(pContext), "/System/Library/Frameworks/AudioToolbox.framework/AudioToolbox");
        if (pContext->coreaudio.hAudioUnit == NULL) {
            ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio);
            ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation);
            return MA_API_NOT_FOUND;
        }
    }

    pContext->coreaudio.AudioComponentFindNext            = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioComponentFindNext");
    pContext->coreaudio.AudioComponentInstanceDispose     = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioComponentInstanceDispose");
    pContext->coreaudio.AudioComponentInstanceNew         = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioComponentInstanceNew");
    pContext->coreaudio.AudioOutputUnitStart              = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioOutputUnitStart");
    pContext->coreaudio.AudioOutputUnitStop               = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioOutputUnitStop");
    pContext->coreaudio.AudioUnitAddPropertyListener      = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioUnitAddPropertyListener");
    pContext->coreaudio.AudioUnitGetPropertyInfo          = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioUnitGetPropertyInfo");
    pContext->coreaudio.AudioUnitGetProperty              = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioUnitGetProperty");
    pContext->coreaudio.AudioUnitSetProperty              = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioUnitSetProperty");
    pContext->coreaudio.AudioUnitInitialize               = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioUnitInitialize");
    pContext->coreaudio.AudioUnitRender                   = ma_dlsym(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit, "AudioUnitRender");
#else
    pContext->coreaudio.CFStringGetCString                = (ma_proc)CFStringGetCString;
    pContext->coreaudio.CFRelease                         = (ma_proc)CFRelease;

    #if defined(MA_APPLE_DESKTOP)
    pContext->coreaudio.AudioObjectGetPropertyData        = (ma_proc)AudioObjectGetPropertyData;
    pContext->coreaudio.AudioObjectGetPropertyDataSize    = (ma_proc)AudioObjectGetPropertyDataSize;
    pContext->coreaudio.AudioObjectSetPropertyData        = (ma_proc)AudioObjectSetPropertyData;
    pContext->coreaudio.AudioObjectAddPropertyListener    = (ma_proc)AudioObjectAddPropertyListener;
    pContext->coreaudio.AudioObjectRemovePropertyListener = (ma_proc)AudioObjectRemovePropertyListener;
    #endif

    pContext->coreaudio.AudioComponentFindNext            = (ma_proc)AudioComponentFindNext;
    pContext->coreaudio.AudioComponentInstanceDispose     = (ma_proc)AudioComponentInstanceDispose;
    pContext->coreaudio.AudioComponentInstanceNew         = (ma_proc)AudioComponentInstanceNew;
    pContext->coreaudio.AudioOutputUnitStart              = (ma_proc)AudioOutputUnitStart;
    pContext->coreaudio.AudioOutputUnitStop               = (ma_proc)AudioOutputUnitStop;
    pContext->coreaudio.AudioUnitAddPropertyListener      = (ma_proc)AudioUnitAddPropertyListener;
    pContext->coreaudio.AudioUnitGetPropertyInfo          = (ma_proc)AudioUnitGetPropertyInfo;
    pContext->coreaudio.AudioUnitGetProperty              = (ma_proc)AudioUnitGetProperty;
    pContext->coreaudio.AudioUnitSetProperty              = (ma_proc)AudioUnitSetProperty;
    pContext->coreaudio.AudioUnitInitialize               = (ma_proc)AudioUnitInitialize;
    pContext->coreaudio.AudioUnitRender                   = (ma_proc)AudioUnitRender;
#endif

    /* Audio component. */
    {
        AudioComponentDescription desc;
        desc.componentType         = kAudioUnitType_Output;
    #if defined(MA_APPLE_DESKTOP)
        desc.componentSubType      = kAudioUnitSubType_HALOutput;
    #else
        desc.componentSubType      = kAudioUnitSubType_RemoteIO;
    #endif
        desc.componentManufacturer = kAudioUnitManufacturer_Apple;
        desc.componentFlags        = 0;
        desc.componentFlagsMask    = 0;

        pContext->coreaudio.component = ((ma_AudioComponentFindNext_proc)pContext->coreaudio.AudioComponentFindNext)(NULL, &desc);
        if (pContext->coreaudio.component == NULL) {
        #if !defined(MA_NO_RUNTIME_LINKING) && !defined(MA_APPLE_MOBILE)
            ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit);
            ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio);
            ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation);
        #endif
            return MA_FAILED_TO_INIT_BACKEND;
        }
    }

#if !defined(MA_APPLE_MOBILE)
    result = ma_context__init_device_tracking__coreaudio(pContext);
    if (result != MA_SUCCESS) {
    #if !defined(MA_NO_RUNTIME_LINKING) && !defined(MA_APPLE_MOBILE)
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hAudioUnit);
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreAudio);
        ma_dlclose(ma_context_get_log(pContext), pContext->coreaudio.hCoreFoundation);
    #endif
        return result;
    }
#endif

    pContext->coreaudio.noAudioSessionDeactivate = pConfig->coreaudio.noAudioSessionDeactivate;

    pCallbacks->onContextInit             = ma_context_init__coreaudio;
    pCallbacks->onContextUninit           = ma_context_uninit__coreaudio;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__coreaudio;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__coreaudio;
    pCallbacks->onDeviceInit              = ma_device_init__coreaudio;
    pCallbacks->onDeviceUninit            = ma_device_uninit__coreaudio;
    pCallbacks->onDeviceStart             = ma_device_start__coreaudio;
    pCallbacks->onDeviceStop              = ma_device_stop__coreaudio;
    pCallbacks->onDeviceRead              = NULL;
    pCallbacks->onDeviceWrite             = NULL;
    pCallbacks->onDeviceDataLoop          = NULL;

    return MA_SUCCESS;
}
#endif  /* MA_HAS_COREAUDIO */



/******************************************************************************

sndio Backend

******************************************************************************/
#ifdef MA_HAS_SNDIO
#include <fcntl.h>

/*
Only supporting OpenBSD. This did not work very well at all on FreeBSD when I tried it. Not sure if this is due
to miniaudio's implementation or if it's some kind of system configuration issue, but basically the default device
just doesn't emit any sound, or at times you'll hear tiny pieces. I will consider enabling this when there's
demand for it or if I can get it tested and debugged more thoroughly.
*/
#if 0
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/audioio.h>
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
#include <sys/soundcard.h>
#endif
#endif

#define MA_SIO_DEVANY   "default"
#define MA_SIO_PLAY     1
#define MA_SIO_REC      2
#define MA_SIO_NENC     8
#define MA_SIO_NCHAN    8
#define MA_SIO_NRATE    16
#define MA_SIO_NCONF    4

struct ma_sio_hdl; /* <-- Opaque */

struct ma_sio_par
{
    unsigned int bits;
    unsigned int bps;
    unsigned int sig;
    unsigned int le;
    unsigned int msb;
    unsigned int rchan;
    unsigned int pchan;
    unsigned int rate;
    unsigned int bufsz;
    unsigned int xrun;
    unsigned int round;
    unsigned int appbufsz;
    int __pad[3];
    unsigned int __magic;
};

struct ma_sio_enc
{
    unsigned int bits;
    unsigned int bps;
    unsigned int sig;
    unsigned int le;
    unsigned int msb;
};

struct ma_sio_conf
{
    unsigned int enc;
    unsigned int rchan;
    unsigned int pchan;
    unsigned int rate;
};

struct ma_sio_cap
{
    struct ma_sio_enc enc[MA_SIO_NENC];
    unsigned int rchan[MA_SIO_NCHAN];
    unsigned int pchan[MA_SIO_NCHAN];
    unsigned int rate[MA_SIO_NRATE];
    int __pad[7];
    unsigned int nconf;
    struct ma_sio_conf confs[MA_SIO_NCONF];
};

typedef struct ma_sio_hdl* (* ma_sio_open_proc)   (const char*, unsigned int, int);
typedef void               (* ma_sio_close_proc)  (struct ma_sio_hdl*);
typedef int                (* ma_sio_setpar_proc) (struct ma_sio_hdl*, struct ma_sio_par*);
typedef int                (* ma_sio_getpar_proc) (struct ma_sio_hdl*, struct ma_sio_par*);
typedef int                (* ma_sio_getcap_proc) (struct ma_sio_hdl*, struct ma_sio_cap*);
typedef size_t             (* ma_sio_write_proc)  (struct ma_sio_hdl*, const void*, size_t);
typedef size_t             (* ma_sio_read_proc)   (struct ma_sio_hdl*, void*, size_t);
typedef int                (* ma_sio_start_proc)  (struct ma_sio_hdl*);
typedef int                (* ma_sio_stop_proc)   (struct ma_sio_hdl*);
typedef int                (* ma_sio_initpar_proc)(struct ma_sio_par*);

static ma_uint32 ma_get_standard_sample_rate_priority_index__sndio(ma_uint32 sampleRate)   /* Lower = higher priority */
{
    ma_uint32 i;
    for (i = 0; i < ma_countof(g_maStandardSampleRatePriorities); ++i) {
        if (g_maStandardSampleRatePriorities[i] == sampleRate) {
            return i;
        }
    }

    return (ma_uint32)-1;
}

static ma_format ma_format_from_sio_enc__sndio(unsigned int bits, unsigned int bps, unsigned int sig, unsigned int le, unsigned int msb)
{
    /* We only support native-endian right now. */
    if ((ma_is_little_endian() && le == 0) || (ma_is_big_endian() && le == 1)) {
        return ma_format_unknown;
    }

    if (bits ==  8 && bps == 1 && sig == 0) {
        return ma_format_u8;
    }
    if (bits == 16 && bps == 2 && sig == 1) {
        return ma_format_s16;
    }
    if (bits == 24 && bps == 3 && sig == 1) {
        return ma_format_s24;
    }
    if (bits == 24 && bps == 4 && sig == 1 && msb == 0) {
        /*return ma_format_s24_32;*/
    }
    if (bits == 32 && bps == 4 && sig == 1) {
        return ma_format_s32;
    }

    return ma_format_unknown;
}

static ma_format ma_find_best_format_from_sio_cap__sndio(struct ma_sio_cap* caps)
{
    ma_format bestFormat;
    unsigned int iConfig;

    MA_ASSERT(caps != NULL);

    bestFormat = ma_format_unknown;
    for (iConfig = 0; iConfig < caps->nconf; iConfig += 1) {
        unsigned int iEncoding;
        for (iEncoding = 0; iEncoding < MA_SIO_NENC; iEncoding += 1) {
            unsigned int bits;
            unsigned int bps;
            unsigned int sig;
            unsigned int le;
            unsigned int msb;
            ma_format format;

            if ((caps->confs[iConfig].enc & (1UL << iEncoding)) == 0) {
                continue;
            }

            bits = caps->enc[iEncoding].bits;
            bps  = caps->enc[iEncoding].bps;
            sig  = caps->enc[iEncoding].sig;
            le   = caps->enc[iEncoding].le;
            msb  = caps->enc[iEncoding].msb;
            format = ma_format_from_sio_enc__sndio(bits, bps, sig, le, msb);
            if (format == ma_format_unknown) {
                continue;   /* Format not supported. */
            }

            if (bestFormat == ma_format_unknown) {
                bestFormat = format;
            } else {
                if (ma_get_format_priority_index(bestFormat) > ma_get_format_priority_index(format)) {    /* <-- Lower = better. */
                    bestFormat = format;
                }
            }
        }
    }

    return bestFormat;
}

static ma_uint32 ma_find_best_channels_from_sio_cap__sndio(struct ma_sio_cap* caps, ma_device_type deviceType, ma_format requiredFormat)
{
    ma_uint32 maxChannels;
    unsigned int iConfig;

    MA_ASSERT(caps != NULL);
    MA_ASSERT(requiredFormat != ma_format_unknown);

    /* Just pick whatever configuration has the most channels. */
    maxChannels = 0;
    for (iConfig = 0; iConfig < caps->nconf; iConfig += 1) {
        /* The encoding should be of requiredFormat. */
        unsigned int iEncoding;
        for (iEncoding = 0; iEncoding < MA_SIO_NENC; iEncoding += 1) {
            unsigned int iChannel;
            unsigned int bits;
            unsigned int bps;
            unsigned int sig;
            unsigned int le;
            unsigned int msb;
            ma_format format;

            if ((caps->confs[iConfig].enc & (1UL << iEncoding)) == 0) {
                continue;
            }

            bits = caps->enc[iEncoding].bits;
            bps  = caps->enc[iEncoding].bps;
            sig  = caps->enc[iEncoding].sig;
            le   = caps->enc[iEncoding].le;
            msb  = caps->enc[iEncoding].msb;
            format = ma_format_from_sio_enc__sndio(bits, bps, sig, le, msb);
            if (format != requiredFormat) {
                continue;
            }

            /* Getting here means the format is supported. Iterate over each channel count and grab the biggest one. */
            for (iChannel = 0; iChannel < MA_SIO_NCHAN; iChannel += 1) {
                unsigned int chan = 0;
                unsigned int channels;

                if (deviceType == ma_device_type_playback) {
                    chan = caps->confs[iConfig].pchan;
                } else {
                    chan = caps->confs[iConfig].rchan;
                }

                if ((chan & (1UL << iChannel)) == 0) {
                    continue;
                }

                if (deviceType == ma_device_type_playback) {
                    channels = caps->pchan[iChannel];
                } else {
                    channels = caps->rchan[iChannel];
                }

                if (maxChannels < channels) {
                    maxChannels = channels;
                }
            }
        }
    }

    return maxChannels;
}

static ma_uint32 ma_find_best_sample_rate_from_sio_cap__sndio(struct ma_sio_cap* caps, ma_device_type deviceType, ma_format requiredFormat, ma_uint32 requiredChannels)
{
    ma_uint32 firstSampleRate;
    ma_uint32 bestSampleRate;
    unsigned int iConfig;

    MA_ASSERT(caps != NULL);
    MA_ASSERT(requiredFormat != ma_format_unknown);
    MA_ASSERT(requiredChannels > 0);
    MA_ASSERT(requiredChannels <= MA_MAX_CHANNELS);

    firstSampleRate = 0; /* <-- If the device does not support a standard rate we'll fall back to the first one that's found. */
    bestSampleRate  = 0;

    for (iConfig = 0; iConfig < caps->nconf; iConfig += 1) {
        /* The encoding should be of requiredFormat. */
        unsigned int iEncoding;
        for (iEncoding = 0; iEncoding < MA_SIO_NENC; iEncoding += 1) {
            unsigned int iChannel;
            unsigned int bits;
            unsigned int bps;
            unsigned int sig;
            unsigned int le;
            unsigned int msb;
            ma_format format;

            if ((caps->confs[iConfig].enc & (1UL << iEncoding)) == 0) {
                continue;
            }

            bits = caps->enc[iEncoding].bits;
            bps  = caps->enc[iEncoding].bps;
            sig  = caps->enc[iEncoding].sig;
            le   = caps->enc[iEncoding].le;
            msb  = caps->enc[iEncoding].msb;
            format = ma_format_from_sio_enc__sndio(bits, bps, sig, le, msb);
            if (format != requiredFormat) {
                continue;
            }

            /* Getting here means the format is supported. Iterate over each channel count and grab the biggest one. */
            for (iChannel = 0; iChannel < MA_SIO_NCHAN; iChannel += 1) {
                unsigned int chan = 0;
                unsigned int channels;
                unsigned int iRate;

                if (deviceType == ma_device_type_playback) {
                    chan = caps->confs[iConfig].pchan;
                } else {
                    chan = caps->confs[iConfig].rchan;
                }

                if ((chan & (1UL << iChannel)) == 0) {
                    continue;
                }

                if (deviceType == ma_device_type_playback) {
                    channels = caps->pchan[iChannel];
                } else {
                    channels = caps->rchan[iChannel];
                }

                if (channels != requiredChannels) {
                    continue;
                }

                /* Getting here means we have found a compatible encoding/channel pair. */
                for (iRate = 0; iRate < MA_SIO_NRATE; iRate += 1) {
                    ma_uint32 rate = (ma_uint32)caps->rate[iRate];
                    ma_uint32 ratePriority;

                    if (firstSampleRate == 0) {
                        firstSampleRate = rate;
                    }

                    /* Disregard this rate if it's not a standard one. */
                    ratePriority = ma_get_standard_sample_rate_priority_index__sndio(rate);
                    if (ratePriority == (ma_uint32)-1) {
                        continue;
                    }

                    if (ma_get_standard_sample_rate_priority_index__sndio(bestSampleRate) > ratePriority) {   /* Lower = better. */
                        bestSampleRate = rate;
                    }
                }
            }
        }
    }

    /* If a standard sample rate was not found just fall back to the first one that was iterated. */
    if (bestSampleRate == 0) {
        bestSampleRate = firstSampleRate;
    }

    return bestSampleRate;
}


static ma_result ma_context_enumerate_devices__sndio(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_bool32 isTerminating = MA_FALSE;
    struct ma_sio_hdl* handle;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* sndio doesn't seem to have a good device enumeration API, so I'm therefore only enumerating over default devices for now. */

    /* Playback. */
    if (!isTerminating) {
        handle = ((ma_sio_open_proc)pContext->sndio.sio_open)(MA_SIO_DEVANY, MA_SIO_PLAY, 0);
        if (handle != NULL) {
            /* Supports playback. */
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            ma_strcpy_s(deviceInfo.id.sndio, sizeof(deviceInfo.id.sndio), MA_SIO_DEVANY);
            ma_strcpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME);

            isTerminating = !callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);

            ((ma_sio_close_proc)pContext->sndio.sio_close)(handle);
        }
    }

    /* Capture. */
    if (!isTerminating) {
        handle = ((ma_sio_open_proc)pContext->sndio.sio_open)(MA_SIO_DEVANY, MA_SIO_REC, 0);
        if (handle != NULL) {
            /* Supports capture. */
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            ma_strcpy_s(deviceInfo.id.sndio, sizeof(deviceInfo.id.sndio), "default");
            ma_strcpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME);

            isTerminating = !callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);

            ((ma_sio_close_proc)pContext->sndio.sio_close)(handle);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__sndio(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    char devid[256];
    struct ma_sio_hdl* handle;
    struct ma_sio_cap caps;
    unsigned int iConfig;

    MA_ASSERT(pContext != NULL);

    /* We need to open the device before we can get information about it. */
    if (pDeviceID == NULL) {
        ma_strcpy_s(devid, sizeof(devid), MA_SIO_DEVANY);
        ma_strcpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), (deviceType == ma_device_type_playback) ? MA_DEFAULT_PLAYBACK_DEVICE_NAME : MA_DEFAULT_CAPTURE_DEVICE_NAME);
    } else {
        ma_strcpy_s(devid, sizeof(devid), pDeviceID->sndio);
        ma_strcpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), devid);
    }

    handle = ((ma_sio_open_proc)pContext->sndio.sio_open)(devid, (deviceType == ma_device_type_playback) ? MA_SIO_PLAY : MA_SIO_REC, 0);
    if (handle == NULL) {
        return MA_NO_DEVICE;
    }

    if (((ma_sio_getcap_proc)pContext->sndio.sio_getcap)(handle, &caps) == 0) {
        return MA_ERROR;
    }

    pDeviceInfo->nativeDataFormatCount = 0;

    for (iConfig = 0; iConfig < caps.nconf; iConfig += 1) {
        /*
        The main thing we care about is that the encoding is supported by miniaudio. If it is, we want to give
        preference to some formats over others.
        */
        unsigned int iEncoding;
        unsigned int iChannel;
        unsigned int iRate;

        for (iEncoding = 0; iEncoding < MA_SIO_NENC; iEncoding += 1) {
            unsigned int bits;
            unsigned int bps;
            unsigned int sig;
            unsigned int le;
            unsigned int msb;
            ma_format format;

            if ((caps.confs[iConfig].enc & (1UL << iEncoding)) == 0) {
                continue;
            }

            bits = caps.enc[iEncoding].bits;
            bps  = caps.enc[iEncoding].bps;
            sig  = caps.enc[iEncoding].sig;
            le   = caps.enc[iEncoding].le;
            msb  = caps.enc[iEncoding].msb;
            format = ma_format_from_sio_enc__sndio(bits, bps, sig, le, msb);
            if (format == ma_format_unknown) {
                continue;   /* Format not supported. */
            }


            /* Channels. */
            for (iChannel = 0; iChannel < MA_SIO_NCHAN; iChannel += 1) {
                unsigned int chan = 0;
                unsigned int channels;

                if (deviceType == ma_device_type_playback) {
                    chan = caps.confs[iConfig].pchan;
                } else {
                    chan = caps.confs[iConfig].rchan;
                }

                if ((chan & (1UL << iChannel)) == 0) {
                    continue;
                }

                if (deviceType == ma_device_type_playback) {
                    channels = caps.pchan[iChannel];
                } else {
                    channels = caps.rchan[iChannel];
                }


                /* Sample Rates. */
                for (iRate = 0; iRate < MA_SIO_NRATE; iRate += 1) {
                    if ((caps.confs[iConfig].rate & (1UL << iRate)) != 0) {
                        ma_device_info_add_native_data_format(pDeviceInfo, format, channels, caps.rate[iRate], 0);
                    }
                }
            }
        }
    }

    ((ma_sio_close_proc)pContext->sndio.sio_close)(handle);
    return MA_SUCCESS;
}

static ma_result ma_device_uninit__sndio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ((ma_sio_close_proc)pDevice->pContext->sndio.sio_close)((struct ma_sio_hdl*)pDevice->sndio.handleCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ((ma_sio_close_proc)pDevice->pContext->sndio.sio_close)((struct ma_sio_hdl*)pDevice->sndio.handlePlayback);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_init_handle__sndio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptor, ma_device_type deviceType)
{
    const char* pDeviceName;
    ma_ptr handle;
    int openFlags = 0;
    struct ma_sio_cap caps;
    struct ma_sio_par par;
    const ma_device_id* pDeviceID;
    ma_format format;
    ma_uint32 channels;
    ma_uint32 sampleRate;
    ma_format internalFormat;
    ma_uint32 internalChannels;
    ma_uint32 internalSampleRate;
    ma_uint32 internalPeriodSizeInFrames;
    ma_uint32 internalPeriods;

    MA_ASSERT(pConfig    != NULL);
    MA_ASSERT(deviceType != ma_device_type_duplex);
    MA_ASSERT(pDevice    != NULL);

    if (deviceType == ma_device_type_capture) {
        openFlags = MA_SIO_REC;
    } else {
        openFlags = MA_SIO_PLAY;
    }

    pDeviceID  = pDescriptor->pDeviceID;
    format     = pDescriptor->format;
    channels   = pDescriptor->channels;
    sampleRate = pDescriptor->sampleRate;

    pDeviceName = MA_SIO_DEVANY;
    if (pDeviceID != NULL) {
        pDeviceName = pDeviceID->sndio;
    }

    handle = (ma_ptr)((ma_sio_open_proc)pDevice->pContext->sndio.sio_open)(pDeviceName, openFlags, 0);
    if (handle == NULL) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[sndio] Failed to open device.");
        return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
    }

    /* We need to retrieve the device caps to determine the most appropriate format to use. */
    if (((ma_sio_getcap_proc)pDevice->pContext->sndio.sio_getcap)((struct ma_sio_hdl*)handle, &caps) == 0) {
        ((ma_sio_close_proc)pDevice->pContext->sndio.sio_close)((struct ma_sio_hdl*)handle);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[sndio] Failed to retrieve device caps.");
        return MA_ERROR;
    }

    /*
    Note: sndio reports a huge range of available channels. This is inconvenient for us because there's no real
    way, as far as I can tell, to get the _actual_ channel count of the device. I'm therefore restricting this
    to the requested channels, regardless of whether or not the default channel count is requested.

    For hardware devices, I'm suspecting only a single channel count will be reported and we can safely use the
    value returned by ma_find_best_channels_from_sio_cap__sndio().
    */
    if (deviceType == ma_device_type_capture) {
        if (format == ma_format_unknown) {
            format = ma_find_best_format_from_sio_cap__sndio(&caps);
        }

        if (channels == 0) {
            if (strlen(pDeviceName) > strlen("rsnd/") && strncmp(pDeviceName, "rsnd/", strlen("rsnd/")) == 0) {
                channels = ma_find_best_channels_from_sio_cap__sndio(&caps, deviceType, format);
            } else {
                channels = MA_DEFAULT_CHANNELS;
            }
        }
    } else {
        if (format == ma_format_unknown) {
            format = ma_find_best_format_from_sio_cap__sndio(&caps);
        }

        if (channels == 0) {
            if (strlen(pDeviceName) > strlen("rsnd/") && strncmp(pDeviceName, "rsnd/", strlen("rsnd/")) == 0) {
                channels = ma_find_best_channels_from_sio_cap__sndio(&caps, deviceType, format);
            } else {
                channels = MA_DEFAULT_CHANNELS;
            }
        }
    }

    if (sampleRate == 0) {
        sampleRate = ma_find_best_sample_rate_from_sio_cap__sndio(&caps, pConfig->deviceType, format, channels);
    }


    ((ma_sio_initpar_proc)pDevice->pContext->sndio.sio_initpar)(&par);
    par.msb = 0;
    par.le  = ma_is_little_endian();

    switch (format) {
        case ma_format_u8:
        {
            par.bits = 8;
            par.bps  = 1;
            par.sig  = 0;
        } break;

        case ma_format_s24:
        {
            par.bits = 24;
            par.bps  = 3;
            par.sig  = 1;
        } break;

        case ma_format_s32:
        {
            par.bits = 32;
            par.bps  = 4;
            par.sig  = 1;
        } break;

        case ma_format_s16:
        case ma_format_f32:
        case ma_format_unknown:
        default:
        {
            par.bits = 16;
            par.bps  = 2;
            par.sig  = 1;
        } break;
    }

    if (deviceType == ma_device_type_capture) {
        par.rchan = channels;
    } else {
        par.pchan = channels;
    }

    par.rate = sampleRate;

    internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, par.rate, pConfig->performanceProfile);

    par.round    = internalPeriodSizeInFrames;
    par.appbufsz = par.round * pDescriptor->periodCount;

    if (((ma_sio_setpar_proc)pDevice->pContext->sndio.sio_setpar)((struct ma_sio_hdl*)handle, &par) == 0) {
        ((ma_sio_close_proc)pDevice->pContext->sndio.sio_close)((struct ma_sio_hdl*)handle);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[sndio] Failed to set buffer size.");
        return MA_ERROR;
    }

    if (((ma_sio_getpar_proc)pDevice->pContext->sndio.sio_getpar)((struct ma_sio_hdl*)handle, &par) == 0) {
        ((ma_sio_close_proc)pDevice->pContext->sndio.sio_close)((struct ma_sio_hdl*)handle);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[sndio] Failed to retrieve buffer size.");
        return MA_ERROR;
    }

    internalFormat             = ma_format_from_sio_enc__sndio(par.bits, par.bps, par.sig, par.le, par.msb);
    internalChannels           = (deviceType == ma_device_type_capture) ? par.rchan : par.pchan;
    internalSampleRate         = par.rate;
    internalPeriods            = par.appbufsz / par.round;
    internalPeriodSizeInFrames = par.round;

    if (deviceType == ma_device_type_capture) {
        pDevice->sndio.handleCapture  = handle;
    } else {
        pDevice->sndio.handlePlayback = handle;
    }

    pDescriptor->format             = internalFormat;
    pDescriptor->channels           = internalChannels;
    pDescriptor->sampleRate         = internalSampleRate;
    ma_channel_map_init_standard(ma_standard_channel_map_sndio, pDescriptor->channelMap, ma_countof(pDescriptor->channelMap), internalChannels);
    pDescriptor->periodSizeInFrames = internalPeriodSizeInFrames;
    pDescriptor->periodCount        = internalPeriods;

    return MA_SUCCESS;
}

static ma_result ma_device_init__sndio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->sndio);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_handle__sndio(pDevice, pConfig, pDescriptorCapture, ma_device_type_capture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_handle__sndio(pDevice, pConfig, pDescriptorPlayback, ma_device_type_playback);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__sndio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ((ma_sio_start_proc)pDevice->pContext->sndio.sio_start)((struct ma_sio_hdl*)pDevice->sndio.handleCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ((ma_sio_start_proc)pDevice->pContext->sndio.sio_start)((struct ma_sio_hdl*)pDevice->sndio.handlePlayback);   /* <-- Doesn't actually playback until data is written. */
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__sndio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /*
    From the documentation:

        The sio_stop() function puts the audio subsystem in the same state as before sio_start() is called. It stops recording, drains the play buffer and then
        stops playback. If samples to play are queued but playback hasn't started yet then playback is forced immediately; playback will actually stop once the
        buffer is drained. In no case are samples in the play buffer discarded.

    Therefore, sio_stop() performs all of the necessary draining for us.
    */

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ((ma_sio_stop_proc)pDevice->pContext->sndio.sio_stop)((struct ma_sio_hdl*)pDevice->sndio.handleCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ((ma_sio_stop_proc)pDevice->pContext->sndio.sio_stop)((struct ma_sio_hdl*)pDevice->sndio.handlePlayback);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_write__sndio(ma_device* pDevice, const void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    int result;

    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    result = ((ma_sio_write_proc)pDevice->pContext->sndio.sio_write)((struct ma_sio_hdl*)pDevice->sndio.handlePlayback, pPCMFrames, frameCount * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));
    if (result == 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[sndio] Failed to send data from the client to the device.");
        return MA_IO_ERROR;
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = frameCount;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_read__sndio(ma_device* pDevice, void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    int result;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    result = ((ma_sio_read_proc)pDevice->pContext->sndio.sio_read)((struct ma_sio_hdl*)pDevice->sndio.handleCapture, pPCMFrames, frameCount * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels));
    if (result == 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[sndio] Failed to read data from the device to be sent to the device.");
        return MA_IO_ERROR;
    }

    if (pFramesRead != NULL) {
        *pFramesRead = frameCount;
    }

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__sndio(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_sndio);

    (void)pContext;
    return MA_SUCCESS;
}

static ma_result ma_context_init__sndio(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
#ifndef MA_NO_RUNTIME_LINKING
    const char* libsndioNames[] = {
        "libsndio.so"
    };
    size_t i;

    for (i = 0; i < ma_countof(libsndioNames); ++i) {
        pContext->sndio.sndioSO = ma_dlopen(ma_context_get_log(pContext), libsndioNames[i]);
        if (pContext->sndio.sndioSO != NULL) {
            break;
        }
    }

    if (pContext->sndio.sndioSO == NULL) {
        return MA_NO_BACKEND;
    }

    pContext->sndio.sio_open    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_open");
    pContext->sndio.sio_close   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_close");
    pContext->sndio.sio_setpar  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_setpar");
    pContext->sndio.sio_getpar  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_getpar");
    pContext->sndio.sio_getcap  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_getcap");
    pContext->sndio.sio_write   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_write");
    pContext->sndio.sio_read    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_read");
    pContext->sndio.sio_start   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_start");
    pContext->sndio.sio_stop    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_stop");
    pContext->sndio.sio_initpar = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->sndio.sndioSO, "sio_initpar");
#else
    pContext->sndio.sio_open    = sio_open;
    pContext->sndio.sio_close   = sio_close;
    pContext->sndio.sio_setpar  = sio_setpar;
    pContext->sndio.sio_getpar  = sio_getpar;
    pContext->sndio.sio_getcap  = sio_getcap;
    pContext->sndio.sio_write   = sio_write;
    pContext->sndio.sio_read    = sio_read;
    pContext->sndio.sio_start   = sio_start;
    pContext->sndio.sio_stop    = sio_stop;
    pContext->sndio.sio_initpar = sio_initpar;
#endif

    pCallbacks->onContextInit             = ma_context_init__sndio;
    pCallbacks->onContextUninit           = ma_context_uninit__sndio;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__sndio;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__sndio;
    pCallbacks->onDeviceInit              = ma_device_init__sndio;
    pCallbacks->onDeviceUninit            = ma_device_uninit__sndio;
    pCallbacks->onDeviceStart             = ma_device_start__sndio;
    pCallbacks->onDeviceStop              = ma_device_stop__sndio;
    pCallbacks->onDeviceRead              = ma_device_read__sndio;
    pCallbacks->onDeviceWrite             = ma_device_write__sndio;
    pCallbacks->onDeviceDataLoop          = NULL;

    (void)pConfig;
    return MA_SUCCESS;
}
#endif  /* MA_HAS_SNDIO */



/******************************************************************************

audio(4) Backend

******************************************************************************/
#ifdef MA_HAS_AUDIO4
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/audioio.h>

#ifdef __NetBSD__
#include <sys/param.h>
#endif

#if defined(__OpenBSD__)
    #include <sys/param.h>
    #if defined(OpenBSD) && OpenBSD >= 201709
        #define MA_AUDIO4_USE_NEW_API
    #endif
#endif

static void ma_construct_device_id__audio4(char* id, size_t idSize, const char* base, int deviceIndex)
{
    size_t baseLen;

    MA_ASSERT(id != NULL);
    MA_ASSERT(idSize > 0);
    MA_ASSERT(deviceIndex >= 0);

    baseLen = strlen(base);
    MA_ASSERT(idSize > baseLen);

    ma_strcpy_s(id, idSize, base);
    ma_itoa_s(deviceIndex, id+baseLen, idSize-baseLen, 10);
}

static ma_result ma_extract_device_index_from_id__audio4(const char* id, const char* base, int* pIndexOut)
{
    size_t idLen;
    size_t baseLen;
    const char* deviceIndexStr;

    MA_ASSERT(id != NULL);
    MA_ASSERT(base != NULL);
    MA_ASSERT(pIndexOut != NULL);

    idLen = strlen(id);
    baseLen = strlen(base);
    if (idLen <= baseLen) {
        return MA_ERROR;   /* Doesn't look like the id starts with the base. */
    }

    if (strncmp(id, base, baseLen) != 0) {
        return MA_ERROR;   /* ID does not begin with base. */
    }

    deviceIndexStr = id + baseLen;
    if (deviceIndexStr[0] == '\0') {
        return MA_ERROR;   /* No index specified in the ID. */
    }

    if (pIndexOut) {
        *pIndexOut = atoi(deviceIndexStr);
    }

    return MA_SUCCESS;
}


#if !defined(MA_AUDIO4_USE_NEW_API)    /* Old API */
static ma_format ma_format_from_encoding__audio4(unsigned int encoding, unsigned int precision)
{
    if (precision == 8 && (encoding == AUDIO_ENCODING_ULINEAR || encoding == AUDIO_ENCODING_ULINEAR || encoding == AUDIO_ENCODING_ULINEAR_LE || encoding == AUDIO_ENCODING_ULINEAR_BE)) {
        return ma_format_u8;
    } else {
        if (ma_is_little_endian() && encoding == AUDIO_ENCODING_SLINEAR_LE) {
            if (precision == 16) {
                return ma_format_s16;
            } else if (precision == 24) {
                return ma_format_s24;
            } else if (precision == 32) {
                return ma_format_s32;
            }
        } else if (ma_is_big_endian() && encoding == AUDIO_ENCODING_SLINEAR_BE) {
            if (precision == 16) {
                return ma_format_s16;
            } else if (precision == 24) {
                return ma_format_s24;
            } else if (precision == 32) {
                return ma_format_s32;
            }
        }
    }

    return ma_format_unknown;  /* Encoding not supported. */
}

static void ma_encoding_from_format__audio4(ma_format format, unsigned int* pEncoding, unsigned int* pPrecision)
{
    MA_ASSERT(pEncoding  != NULL);
    MA_ASSERT(pPrecision != NULL);

    switch (format)
    {
        case ma_format_u8:
        {
            *pEncoding = AUDIO_ENCODING_ULINEAR;
            *pPrecision = 8;
        } break;

        case ma_format_s24:
        {
            *pEncoding = (ma_is_little_endian()) ? AUDIO_ENCODING_SLINEAR_LE : AUDIO_ENCODING_SLINEAR_BE;
            *pPrecision = 24;
        } break;

        case ma_format_s32:
        {
            *pEncoding = (ma_is_little_endian()) ? AUDIO_ENCODING_SLINEAR_LE : AUDIO_ENCODING_SLINEAR_BE;
            *pPrecision = 32;
        } break;

        case ma_format_s16:
        case ma_format_f32:
        case ma_format_unknown:
        default:
        {
            *pEncoding = (ma_is_little_endian()) ? AUDIO_ENCODING_SLINEAR_LE : AUDIO_ENCODING_SLINEAR_BE;
            *pPrecision = 16;
        } break;
    }
}

static ma_format ma_format_from_prinfo__audio4(struct audio_prinfo* prinfo)
{
    return ma_format_from_encoding__audio4(prinfo->encoding, prinfo->precision);
}

static ma_format ma_best_format_from_fd__audio4(int fd, ma_format preferredFormat)
{
    audio_encoding_t encoding;
    ma_uint32 iFormat;
    int counter = 0;

    /* First check to see if the preferred format is supported. */
    if (preferredFormat != ma_format_unknown) {
        counter = 0;
        for (;;) {
            MA_ZERO_OBJECT(&encoding);
            encoding.index = counter;
            if (ioctl(fd, AUDIO_GETENC, &encoding) < 0) {
                break;
            }

            if (preferredFormat == ma_format_from_encoding__audio4(encoding.encoding, encoding.precision)) {
                return preferredFormat;  /* Found the preferred format. */
            }

            /* Getting here means this encoding does not match our preferred format so we need to more on to the next encoding. */
            counter += 1;
        }
    }

    /* Getting here means our preferred format is not supported, so fall back to our standard priorities. */
    for (iFormat = 0; iFormat < ma_countof(g_maFormatPriorities); iFormat += 1) {
        ma_format format = g_maFormatPriorities[iFormat];

        counter = 0;
        for (;;) {
            MA_ZERO_OBJECT(&encoding);
            encoding.index = counter;
            if (ioctl(fd, AUDIO_GETENC, &encoding) < 0) {
                break;
            }

            if (format == ma_format_from_encoding__audio4(encoding.encoding, encoding.precision)) {
                return format;  /* Found a workable format. */
            }

            /* Getting here means this encoding does not match our preferred format so we need to more on to the next encoding. */
            counter += 1;
        }
    }

    /* Getting here means not appropriate format was found. */
    return ma_format_unknown;
}
#else
static ma_format ma_format_from_swpar__audio4(struct audio_swpar* par)
{
    if (par->bits == 8 && par->bps == 1 && par->sig == 0) {
        return ma_format_u8;
    }
    if (par->bits == 16 && par->bps == 2 && par->sig == 1 && par->le == ma_is_little_endian()) {
        return ma_format_s16;
    }
    if (par->bits == 24 && par->bps == 3 && par->sig == 1 && par->le == ma_is_little_endian()) {
        return ma_format_s24;
    }
    if (par->bits == 32 && par->bps == 4 && par->sig == 1 && par->le == ma_is_little_endian()) {
        return ma_format_f32;
    }

    /* Format not supported. */
    return ma_format_unknown;
}
#endif

static ma_result ma_context_get_device_info_from_fd__audio4(ma_context* pContext, ma_device_type deviceType, int fd, ma_device_info* pDeviceInfo)
{
    audio_device_t fdDevice;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(fd >= 0);
    MA_ASSERT(pDeviceInfo != NULL);

    (void)pContext;
    (void)deviceType;

    if (ioctl(fd, AUDIO_GETDEV, &fdDevice) < 0) {
        return MA_ERROR;   /* Failed to retrieve device info. */
    }

    /* Name. */
    ma_strcpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), fdDevice.name);

    #if !defined(MA_AUDIO4_USE_NEW_API)
    {
        audio_info_t fdInfo;
        int counter = 0;
        ma_uint32 channels;
        ma_uint32 sampleRate;

#if defined(__NetBSD__) && (__NetBSD_Version__ >= 900000000)
        if (ioctl(fd, AUDIO_GETFORMAT, &fdInfo) < 0) {
            return MA_ERROR;
        }
#else
        if (ioctl(fd, AUDIO_GETINFO, &fdInfo) < 0) {
            return MA_ERROR;
        }
#endif

        if (deviceType == ma_device_type_playback) {
            channels   = fdInfo.play.channels;
            sampleRate = fdInfo.play.sample_rate;
        } else {
            channels   = fdInfo.record.channels;
            sampleRate = fdInfo.record.sample_rate;
        }

        /* Supported formats. We get this by looking at the encodings. */
        pDeviceInfo->nativeDataFormatCount = 0;
        for (;;) {
            audio_encoding_t encoding;
            ma_format format;

            MA_ZERO_OBJECT(&encoding);
            encoding.index = counter;
            if (ioctl(fd, AUDIO_GETENC, &encoding) < 0) {
                break;
            }

            format = ma_format_from_encoding__audio4(encoding.encoding, encoding.precision);
            if (format != ma_format_unknown) {
                ma_device_info_add_native_data_format(pDeviceInfo, format, channels, sampleRate, 0);
            }

            counter += 1;
        }
    }
    #else
    {
        struct audio_swpar fdPar;
        ma_format format;
        ma_uint32 channels;
        ma_uint32 sampleRate;

        if (ioctl(fd, AUDIO_GETPAR, &fdPar) < 0) {
            return MA_ERROR;
        }

        format = ma_format_from_swpar__audio4(&fdPar);
        if (format == ma_format_unknown) {
            return MA_FORMAT_NOT_SUPPORTED;
        }

        if (deviceType == ma_device_type_playback) {
            channels = fdPar.pchan;
        } else {
            channels = fdPar.rchan;
        }

        sampleRate = fdPar.rate;

        pDeviceInfo->nativeDataFormatCount = 0;
        ma_device_info_add_native_data_format(pDeviceInfo, format, channels, sampleRate, 0);
    }
    #endif

    return MA_SUCCESS;
}

static ma_result ma_context_enumerate_devices__audio4(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    const int maxDevices = 64;
    char devpath[256];
    int iDevice;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /*
    Every device will be named "/dev/audioN", with a "/dev/audioctlN" equivalent. We use the "/dev/audioctlN"
    version here since we can open it even when another process has control of the "/dev/audioN" device.
    */
    for (iDevice = 0; iDevice < maxDevices; ++iDevice) {
        struct stat st;
        int fd;
        ma_bool32 isTerminating = MA_FALSE;

        ma_strcpy_s(devpath, sizeof(devpath), "/dev/audioctl");
        ma_itoa_s(iDevice, devpath+strlen(devpath), sizeof(devpath)-strlen(devpath), 10);

        if (stat(devpath, &st) < 0) {
            break;
        }

        /* The device exists, but we need to check if it's usable as playback and/or capture. */

        /* Playback. */
        if (!isTerminating) {
            fd = open(devpath, O_RDONLY, 0);
            if (fd >= 0) {
                /* Supports playback. */
                ma_device_info deviceInfo;
                MA_ZERO_OBJECT(&deviceInfo);
                ma_construct_device_id__audio4(deviceInfo.id.audio4, sizeof(deviceInfo.id.audio4), "/dev/audio", iDevice);
                if (ma_context_get_device_info_from_fd__audio4(pContext, ma_device_type_playback, fd, &deviceInfo) == MA_SUCCESS) {
                    isTerminating = !callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
                }

                close(fd);
            }
        }

        /* Capture. */
        if (!isTerminating) {
            fd = open(devpath, O_WRONLY, 0);
            if (fd >= 0) {
                /* Supports capture. */
                ma_device_info deviceInfo;
                MA_ZERO_OBJECT(&deviceInfo);
                ma_construct_device_id__audio4(deviceInfo.id.audio4, sizeof(deviceInfo.id.audio4), "/dev/audio", iDevice);
                if (ma_context_get_device_info_from_fd__audio4(pContext, ma_device_type_capture, fd, &deviceInfo) == MA_SUCCESS) {
                    isTerminating = !callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
                }

                close(fd);
            }
        }

        if (isTerminating) {
            break;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__audio4(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    int fd = -1;
    int deviceIndex = -1;
    char ctlid[256];
    ma_result result;

    MA_ASSERT(pContext != NULL);

    /*
    We need to open the "/dev/audioctlN" device to get the info. To do this we need to extract the number
    from the device ID which will be in "/dev/audioN" format.
    */
    if (pDeviceID == NULL) {
        /* Default device. */
        ma_strcpy_s(ctlid, sizeof(ctlid), "/dev/audioctl");
    } else {
        /* Specific device. We need to convert from "/dev/audioN" to "/dev/audioctlN". */
        result = ma_extract_device_index_from_id__audio4(pDeviceID->audio4, "/dev/audio", &deviceIndex);
        if (result != MA_SUCCESS) {
            return result;
        }

        ma_construct_device_id__audio4(ctlid, sizeof(ctlid), "/dev/audioctl", deviceIndex);
    }

    fd = open(ctlid, (deviceType == ma_device_type_playback) ? O_WRONLY : O_RDONLY, 0);
    if (fd == -1) {
        return MA_NO_DEVICE;
    }

    if (deviceIndex == -1) {
        ma_strcpy_s(pDeviceInfo->id.audio4, sizeof(pDeviceInfo->id.audio4), "/dev/audio");
    } else {
        ma_construct_device_id__audio4(pDeviceInfo->id.audio4, sizeof(pDeviceInfo->id.audio4), "/dev/audio", deviceIndex);
    }

    result = ma_context_get_device_info_from_fd__audio4(pContext, deviceType, fd, pDeviceInfo);

    close(fd);
    return result;
}

static ma_result ma_device_uninit__audio4(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        close(pDevice->audio4.fdCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        close(pDevice->audio4.fdPlayback);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_init_fd__audio4(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptor, ma_device_type deviceType)
{
    const char* pDefaultDeviceNames[] = {
        "/dev/audio",
        "/dev/audio0"
    };
    const char* pDefaultDeviceCtlNames[] = {
        "/dev/audioctl",
        "/dev/audioctl0"
    };
    int fd;
    int fdFlags = 0;
    size_t iDefaultDevice = (size_t)-1;
    ma_format internalFormat;
    ma_uint32 internalChannels;
    ma_uint32 internalSampleRate;
    ma_uint32 internalPeriodSizeInFrames;
    ma_uint32 internalPeriods;

    MA_ASSERT(pConfig    != NULL);
    MA_ASSERT(deviceType != ma_device_type_duplex);
    MA_ASSERT(pDevice    != NULL);

    /* The first thing to do is open the file. */
    if (deviceType == ma_device_type_capture) {
        fdFlags = O_RDONLY;
    } else {
        fdFlags = O_WRONLY;
    }
    /*fdFlags |= O_NONBLOCK;*/

    /* Find the index of the default device as a start. We'll use this index later. Set it to (size_t)-1 otherwise. */
    if (pDescriptor->pDeviceID == NULL) {
        /* Default device. */
        for (iDefaultDevice = 0; iDefaultDevice < ma_countof(pDefaultDeviceNames); ++iDefaultDevice) {
            fd = open(pDefaultDeviceNames[iDefaultDevice], fdFlags, 0);
            if (fd != -1) {
                break;
            }
        }
    } else {
        /* Specific device. */
        fd = open(pDescriptor->pDeviceID->audio4, fdFlags, 0);

        for (iDefaultDevice = 0; iDefaultDevice < ma_countof(pDefaultDeviceNames); iDefaultDevice += 1) {
            if (ma_strcmp(pDefaultDeviceNames[iDefaultDevice], pDescriptor->pDeviceID->audio4) == 0) {
                break;
            }
        }

        if (iDefaultDevice == ma_countof(pDefaultDeviceNames)) {
            iDefaultDevice = (size_t)-1;
        }
    }

    if (fd == -1) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to open device.");
        return ma_result_from_errno(errno);
    }

    #if !defined(MA_AUDIO4_USE_NEW_API)    /* Old API */
    {
        audio_info_t fdInfo;
        int fdInfoResult = -1;

        /*
        The documentation is a little bit unclear to me as to how it handles formats. It says the
        following:

            Regardless of formats supported by underlying driver, the audio driver accepts the
            following formats.

        By then the next sentence says this:

            `encoding` and `precision` are one of the values obtained by AUDIO_GETENC.

        It sounds like a direct contradiction to me. I'm going to play this safe any only use the
        best sample format returned by AUDIO_GETENC. If the requested format is supported we'll
        use that, but otherwise we'll just use our standard format priorities to pick an
        appropriate one.
        */
        AUDIO_INITINFO(&fdInfo);

        /*
        Get the default format from the audioctl file if we're asking for a default device. If we
        retrieve it from /dev/audio it'll default to mono 8000Hz.
        */
        if (iDefaultDevice != (size_t)-1) {
            /* We're using a default device. Get the info from the /dev/audioctl file instead of /dev/audio. */
            int fdctl = open(pDefaultDeviceCtlNames[iDefaultDevice], fdFlags, 0);
            if (fdctl != -1) {
#if defined(__NetBSD__) && (__NetBSD_Version__ >= 900000000)
                fdInfoResult = ioctl(fdctl, AUDIO_GETFORMAT, &fdInfo);
#else
                fdInfoResult = ioctl(fdctl, AUDIO_GETINFO, &fdInfo);
#endif
                close(fdctl);
            }
        }

        if (fdInfoResult == -1) {
            /* We still don't have the default device info so just retrieve it from the main audio device. */
            if (ioctl(fd, AUDIO_GETINFO, &fdInfo) < 0) {
                close(fd);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] AUDIO_GETINFO failed.");
                return ma_result_from_errno(errno);
            }
        }

        /* We get the driver to do as much of the data conversion as possible. */
        if (deviceType == ma_device_type_capture) {
            fdInfo.mode = AUMODE_RECORD;
            ma_encoding_from_format__audio4(ma_best_format_from_fd__audio4(fd, pDescriptor->format), &fdInfo.record.encoding, &fdInfo.record.precision);

            if (pDescriptor->channels != 0) {
                fdInfo.record.channels = ma_clamp(pDescriptor->channels, 1, 12);    /* From the documentation: `channels` ranges from 1 to 12. */
            }

            if (pDescriptor->sampleRate != 0) {
                fdInfo.record.sample_rate = ma_clamp(pDescriptor->sampleRate, 1000, 192000);    /* From the documentation: `frequency` ranges from 1000Hz to 192000Hz. (They mean `sample_rate` instead of `frequency`.) */
            }
        } else {
            fdInfo.mode = AUMODE_PLAY;
            ma_encoding_from_format__audio4(ma_best_format_from_fd__audio4(fd, pDescriptor->format), &fdInfo.play.encoding, &fdInfo.play.precision);

            if (pDescriptor->channels != 0) {
                fdInfo.play.channels = ma_clamp(pDescriptor->channels, 1, 12);    /* From the documentation: `channels` ranges from 1 to 12. */
            }

            if (pDescriptor->sampleRate != 0) {
                fdInfo.play.sample_rate = ma_clamp(pDescriptor->sampleRate, 1000, 192000);    /* From the documentation: `frequency` ranges from 1000Hz to 192000Hz. (They mean `sample_rate` instead of `frequency`.) */
            }
        }

        if (ioctl(fd, AUDIO_SETINFO, &fdInfo) < 0) {
            close(fd);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to set device format. AUDIO_SETINFO failed.");
            return ma_result_from_errno(errno);
        }

        if (ioctl(fd, AUDIO_GETINFO, &fdInfo) < 0) {
            close(fd);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] AUDIO_GETINFO failed.");
            return ma_result_from_errno(errno);
        }

        if (deviceType == ma_device_type_capture) {
            internalFormat     = ma_format_from_prinfo__audio4(&fdInfo.record);
            internalChannels   = fdInfo.record.channels;
            internalSampleRate = fdInfo.record.sample_rate;
        } else {
            internalFormat     = ma_format_from_prinfo__audio4(&fdInfo.play);
            internalChannels   = fdInfo.play.channels;
            internalSampleRate = fdInfo.play.sample_rate;
        }

        if (internalFormat == ma_format_unknown) {
            close(fd);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] The device's internal device format is not supported by miniaudio. The device is unusable.");
            return MA_FORMAT_NOT_SUPPORTED;
        }

        /* Buffer. */
        {
            ma_uint32 internalPeriodSizeInBytes;

            internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, internalSampleRate, pConfig->performanceProfile);

            internalPeriodSizeInBytes = internalPeriodSizeInFrames * ma_get_bytes_per_frame(internalFormat, internalChannels);
            if (internalPeriodSizeInBytes < 16) {
                internalPeriodSizeInBytes = 16;
            }

            internalPeriods = pDescriptor->periodCount;
            if (internalPeriods < 2) {
                internalPeriods = 2;
            }

            /* What miniaudio calls a period, audio4 calls a block. */
            AUDIO_INITINFO(&fdInfo);
            fdInfo.hiwat     = internalPeriods;
            fdInfo.lowat     = internalPeriods-1;
            fdInfo.blocksize = internalPeriodSizeInBytes;
            if (ioctl(fd, AUDIO_SETINFO, &fdInfo) < 0) {
                close(fd);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to set internal buffer size. AUDIO_SETINFO failed.");
                return ma_result_from_errno(errno);
            }

            internalPeriods            = fdInfo.hiwat;
            internalPeriodSizeInFrames = fdInfo.blocksize / ma_get_bytes_per_frame(internalFormat, internalChannels);
        }
    }
    #else
    {
        struct audio_swpar fdPar;

        /* We need to retrieve the format of the device so we can know the channel count and sample rate. Then we can calculate the buffer size. */
        if (ioctl(fd, AUDIO_GETPAR, &fdPar) < 0) {
            close(fd);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to retrieve initial device parameters.");
            return ma_result_from_errno(errno);
        }

        internalFormat     = ma_format_from_swpar__audio4(&fdPar);
        internalChannels   = (deviceType == ma_device_type_capture) ? fdPar.rchan : fdPar.pchan;
        internalSampleRate = fdPar.rate;

        if (internalFormat == ma_format_unknown) {
            close(fd);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] The device's internal device format is not supported by miniaudio. The device is unusable.");
            return MA_FORMAT_NOT_SUPPORTED;
        }

        /* Buffer. */
        {
            ma_uint32 internalPeriodSizeInBytes;

            internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, internalSampleRate, pConfig->performanceProfile);

            /* What miniaudio calls a period, audio4 calls a block. */
            internalPeriodSizeInBytes = internalPeriodSizeInFrames * ma_get_bytes_per_frame(internalFormat, internalChannels);
            if (internalPeriodSizeInBytes < 16) {
                internalPeriodSizeInBytes = 16;
            }

            fdPar.nblks = pDescriptor->periodCount;
            fdPar.round = internalPeriodSizeInBytes;

            if (ioctl(fd, AUDIO_SETPAR, &fdPar) < 0) {
                close(fd);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to set device parameters.");
                return ma_result_from_errno(errno);
            }

            if (ioctl(fd, AUDIO_GETPAR, &fdPar) < 0) {
                close(fd);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to retrieve actual device parameters.");
                return ma_result_from_errno(errno);
            }
        }

        internalFormat             = ma_format_from_swpar__audio4(&fdPar);
        internalChannels           = (deviceType == ma_device_type_capture) ? fdPar.rchan : fdPar.pchan;
        internalSampleRate         = fdPar.rate;
        internalPeriods            = fdPar.nblks;
        internalPeriodSizeInFrames = fdPar.round / ma_get_bytes_per_frame(internalFormat, internalChannels);
    }
    #endif

    if (internalFormat == ma_format_unknown) {
        close(fd);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] The device's internal device format is not supported by miniaudio. The device is unusable.");
        return MA_FORMAT_NOT_SUPPORTED;
    }

    if (deviceType == ma_device_type_capture) {
        pDevice->audio4.fdCapture  = fd;
    } else {
        pDevice->audio4.fdPlayback = fd;
    }

    pDescriptor->format             = internalFormat;
    pDescriptor->channels           = internalChannels;
    pDescriptor->sampleRate         = internalSampleRate;
    ma_channel_map_init_standard(ma_standard_channel_map_sound4, pDescriptor->channelMap, ma_countof(pDescriptor->channelMap), internalChannels);
    pDescriptor->periodSizeInFrames = internalPeriodSizeInFrames;
    pDescriptor->periodCount        = internalPeriods;

    return MA_SUCCESS;
}

static ma_result ma_device_init__audio4(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    MA_ASSERT(pDevice != NULL);

    MA_ZERO_OBJECT(&pDevice->audio4);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    pDevice->audio4.fdCapture  = -1;
    pDevice->audio4.fdPlayback = -1;

    /*
    The version of the operating system dictates whether or not the device is exclusive or shared. NetBSD
    introduced in-kernel mixing which means it's shared. All other BSD flavours are exclusive as far as
    I'm aware.
    */
#if defined(__NetBSD_Version__) && __NetBSD_Version__ >= 800000000
    /* NetBSD 8.0+ */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->shareMode == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->shareMode  == ma_share_mode_exclusive)) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }
#else
    /* All other flavors. */
#endif

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_fd__audio4(pDevice, pConfig, pDescriptorCapture, ma_device_type_capture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_fd__audio4(pDevice, pConfig, pDescriptorPlayback, ma_device_type_playback);
        if (result != MA_SUCCESS) {
            if (pConfig->deviceType == ma_device_type_duplex) {
                close(pDevice->audio4.fdCapture);
            }
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__audio4(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        if (pDevice->audio4.fdCapture == -1) {
            return MA_INVALID_ARGS;
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        if (pDevice->audio4.fdPlayback == -1) {
            return MA_INVALID_ARGS;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop_fd__audio4(ma_device* pDevice, int fd)
{
    if (fd == -1) {
        return MA_INVALID_ARGS;
    }

#if !defined(MA_AUDIO4_USE_NEW_API)
    if (ioctl(fd, AUDIO_FLUSH, 0) < 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to stop device. AUDIO_FLUSH failed.");
        return ma_result_from_errno(errno);
    }
#else
    if (ioctl(fd, AUDIO_STOP, 0) < 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to stop device. AUDIO_STOP failed.");
        return ma_result_from_errno(errno);
    }
#endif

    return MA_SUCCESS;
}

static ma_result ma_device_stop__audio4(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_result result;

        result = ma_device_stop_fd__audio4(pDevice, pDevice->audio4.fdCapture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_result result;

        /* Drain the device first. If this fails we'll just need to flush without draining. Unfortunately draining isn't available on newer version of OpenBSD. */
    #if !defined(MA_AUDIO4_USE_NEW_API)
        ioctl(pDevice->audio4.fdPlayback, AUDIO_DRAIN, 0);
    #endif

        /* Here is where the device is stopped immediately. */
        result = ma_device_stop_fd__audio4(pDevice, pDevice->audio4.fdPlayback);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_write__audio4(ma_device* pDevice, const void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    int result;

    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    result = write(pDevice->audio4.fdPlayback, pPCMFrames, frameCount * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));
    if (result < 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to write data to the device.");
        return ma_result_from_errno(errno);
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = (ma_uint32)result / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_read__audio4(ma_device* pDevice, void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    int result;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    result = read(pDevice->audio4.fdCapture, pPCMFrames, frameCount * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels));
    if (result < 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[audio4] Failed to read data from the device.");
        return ma_result_from_errno(errno);
    }

    if (pFramesRead != NULL) {
        *pFramesRead = (ma_uint32)result / ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
    }

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__audio4(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_audio4);

    (void)pContext;
    return MA_SUCCESS;
}

static ma_result ma_context_init__audio4(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    MA_ASSERT(pContext != NULL);

    (void)pConfig;

    pCallbacks->onContextInit             = ma_context_init__audio4;
    pCallbacks->onContextUninit           = ma_context_uninit__audio4;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__audio4;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__audio4;
    pCallbacks->onDeviceInit              = ma_device_init__audio4;
    pCallbacks->onDeviceUninit            = ma_device_uninit__audio4;
    pCallbacks->onDeviceStart             = ma_device_start__audio4;
    pCallbacks->onDeviceStop              = ma_device_stop__audio4;
    pCallbacks->onDeviceRead              = ma_device_read__audio4;
    pCallbacks->onDeviceWrite             = ma_device_write__audio4;
    pCallbacks->onDeviceDataLoop          = NULL;

    return MA_SUCCESS;
}
#endif  /* MA_HAS_AUDIO4 */


/******************************************************************************

OSS Backend

******************************************************************************/
#ifdef MA_HAS_OSS
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/soundcard.h>

#ifndef SNDCTL_DSP_HALT
#define SNDCTL_DSP_HALT SNDCTL_DSP_RESET
#endif

#define MA_OSS_DEFAULT_DEVICE_NAME  "/dev/dsp"

static int ma_open_temp_device__oss()
{
    /* The OSS sample code uses "/dev/mixer" as the device for getting system properties so I'm going to do the same. */
    int fd = open("/dev/mixer", O_RDONLY, 0);
    if (fd >= 0) {
        return fd;
    }

    return -1;
}

static ma_result ma_context_open_device__oss(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_share_mode shareMode, int* pfd)
{
    const char* deviceName;
    int flags;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pfd != NULL);
    (void)pContext;

    *pfd = -1;

    /* This function should only be called for playback or capture, not duplex. */
    if (deviceType == ma_device_type_duplex) {
        return MA_INVALID_ARGS;
    }

    deviceName = MA_OSS_DEFAULT_DEVICE_NAME;
    if (pDeviceID != NULL) {
        deviceName = pDeviceID->oss;
    }

    flags = (deviceType == ma_device_type_playback) ? O_WRONLY : O_RDONLY;
    if (shareMode == ma_share_mode_exclusive) {
        flags |= O_EXCL;
    }

    *pfd = open(deviceName, flags, 0);
    if (*pfd == -1) {
        return ma_result_from_errno(errno);
    }

    return MA_SUCCESS;
}

static ma_result ma_context_enumerate_devices__oss(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    int fd;
    oss_sysinfo si;
    int result;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    fd = ma_open_temp_device__oss();
    if (fd == -1) {
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[OSS] Failed to open a temporary device for retrieving system information used for device enumeration.");
        return MA_NO_BACKEND;
    }

    result = ioctl(fd, SNDCTL_SYSINFO, &si);
    if (result != -1) {
        int iAudioDevice;
        for (iAudioDevice = 0; iAudioDevice < si.numaudios; ++iAudioDevice) {
            oss_audioinfo ai;
            ai.dev = iAudioDevice;
            result = ioctl(fd, SNDCTL_AUDIOINFO, &ai);
            if (result != -1) {
                if (ai.devnode[0] != '\0') {    /* <-- Can be blank, according to documentation. */
                    ma_device_info deviceInfo;
                    ma_bool32 isTerminating = MA_FALSE;

                    MA_ZERO_OBJECT(&deviceInfo);

                    /* ID */
                    ma_strncpy_s(deviceInfo.id.oss, sizeof(deviceInfo.id.oss), ai.devnode, (size_t)-1);

                    /*
                    The human readable device name should be in the "ai.handle" variable, but it can
                    sometimes be empty in which case we just fall back to "ai.name" which is less user
                    friendly, but usually has a value.
                    */
                    if (ai.handle[0] != '\0') {
                        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), ai.handle, (size_t)-1);
                    } else {
                        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), ai.name, (size_t)-1);
                    }

                    /* The device can be both playback and capture. */
                    if (!isTerminating && (ai.caps & PCM_CAP_OUTPUT) != 0) {
                        isTerminating = !callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
                    }
                    if (!isTerminating && (ai.caps & PCM_CAP_INPUT) != 0) {
                        isTerminating = !callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
                    }

                    if (isTerminating) {
                        break;
                    }
                }
            }
        }
    } else {
        close(fd);
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[OSS] Failed to retrieve system information for device enumeration.");
        return MA_NO_BACKEND;
    }

    close(fd);
    return MA_SUCCESS;
}

static void ma_context_add_native_data_format__oss(ma_context* pContext, oss_audioinfo* pAudioInfo, ma_format format, ma_device_info* pDeviceInfo)
{
    unsigned int minChannels;
    unsigned int maxChannels;
    unsigned int iRate;

    MA_ASSERT(pContext    != NULL);
    MA_ASSERT(pAudioInfo  != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    /* If we support all channels we just report 0. */
    minChannels = ma_clamp(pAudioInfo->min_channels, MA_MIN_CHANNELS, MA_MAX_CHANNELS);
    maxChannels = ma_clamp(pAudioInfo->max_channels, MA_MIN_CHANNELS, MA_MAX_CHANNELS);

    /*
    OSS has this annoying thing where sample rates can be reported in two ways. We prefer explicitness,
    which OSS has in the form of nrates/rates, however there are times where nrates can be 0, in which
    case we'll need to use min_rate and max_rate and report only standard rates.
    */
    if (pAudioInfo->nrates > 0) {
        for (iRate = 0; iRate < pAudioInfo->nrates; iRate += 1) {
            unsigned int rate = pAudioInfo->rates[iRate];

            if (minChannels == MA_MIN_CHANNELS && maxChannels == MA_MAX_CHANNELS) {
                ma_device_info_add_native_data_format(pDeviceInfo, format, 0, rate, 0);   /* Set the channel count to 0 to indicate that all channel counts are supported. */
            } else {
                unsigned int iChannel;
                for (iChannel = minChannels; iChannel <= maxChannels; iChannel += 1) {
                     ma_device_info_add_native_data_format(pDeviceInfo, format, iChannel, rate, 0);
                }
            }
        }
    } else {
        for (iRate = 0; iRate < ma_countof(g_maStandardSampleRatePriorities); iRate += 1) {
            ma_uint32 standardRate = g_maStandardSampleRatePriorities[iRate];

            if (standardRate >= (ma_uint32)pAudioInfo->min_rate && standardRate <= (ma_uint32)pAudioInfo->max_rate) {
                if (minChannels == MA_MIN_CHANNELS && maxChannels == MA_MAX_CHANNELS) {
                    ma_device_info_add_native_data_format(pDeviceInfo, format, 0, standardRate, 0);   /* Set the channel count to 0 to indicate that all channel counts are supported. */
                } else {
                    unsigned int iChannel;
                    for (iChannel = minChannels; iChannel <= maxChannels; iChannel += 1) {
                         ma_device_info_add_native_data_format(pDeviceInfo, format, iChannel, standardRate, 0);
                    }
                }
            }
        }
    }
}

static ma_result ma_context_get_device_info__oss(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_bool32 foundDevice;
    int fdTemp;
    oss_sysinfo si;
    int result;

    MA_ASSERT(pContext != NULL);

    /* Handle the default device a little differently. */
    if (pDeviceID == NULL) {
        if (deviceType == ma_device_type_playback) {
            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
        } else {
            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
        }

        return MA_SUCCESS;
    }


    /* If we get here it means we are _not_ using the default device. */
    foundDevice = MA_FALSE;

    fdTemp = ma_open_temp_device__oss();
    if (fdTemp == -1) {
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[OSS] Failed to open a temporary device for retrieving system information used for device enumeration.");
        return MA_NO_BACKEND;
    }

    result = ioctl(fdTemp, SNDCTL_SYSINFO, &si);
    if (result != -1) {
        int iAudioDevice;
        for (iAudioDevice = 0; iAudioDevice < si.numaudios; ++iAudioDevice) {
            oss_audioinfo ai;
            ai.dev = iAudioDevice;
            result = ioctl(fdTemp, SNDCTL_AUDIOINFO, &ai);
            if (result != -1) {
                if (ma_strcmp(ai.devnode, pDeviceID->oss) == 0) {
                    /* It has the same name, so now just confirm the type. */
                    if ((deviceType == ma_device_type_playback && ((ai.caps & PCM_CAP_OUTPUT) != 0)) ||
                        (deviceType == ma_device_type_capture  && ((ai.caps & PCM_CAP_INPUT)  != 0))) {
                        unsigned int formatMask;

                        /* ID */
                        ma_strncpy_s(pDeviceInfo->id.oss, sizeof(pDeviceInfo->id.oss), ai.devnode, (size_t)-1);

                        /*
                        The human readable device name should be in the "ai.handle" variable, but it can
                        sometimes be empty in which case we just fall back to "ai.name" which is less user
                        friendly, but usually has a value.
                        */
                        if (ai.handle[0] != '\0') {
                            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), ai.handle, (size_t)-1);
                        } else {
                            ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), ai.name, (size_t)-1);
                        }


                        pDeviceInfo->nativeDataFormatCount = 0;

                        if (deviceType == ma_device_type_playback) {
                            formatMask = ai.oformats;
                        } else {
                            formatMask = ai.iformats;
                        }

                        if (((formatMask & AFMT_S16_LE) != 0 && ma_is_little_endian()) || (AFMT_S16_BE && ma_is_big_endian())) {
                            ma_context_add_native_data_format__oss(pContext, &ai, ma_format_s16, pDeviceInfo);
                        }
                        if (((formatMask & AFMT_S32_LE) != 0 && ma_is_little_endian()) || (AFMT_S32_BE && ma_is_big_endian())) {
                            ma_context_add_native_data_format__oss(pContext, &ai, ma_format_s32, pDeviceInfo);
                        }
                        if ((formatMask & AFMT_U8) != 0) {
                            ma_context_add_native_data_format__oss(pContext, &ai, ma_format_u8, pDeviceInfo);
                        }

                        foundDevice = MA_TRUE;
                        break;
                    }
                }
            }
        }
    } else {
        close(fdTemp);
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[OSS] Failed to retrieve system information for device enumeration.");
        return MA_NO_BACKEND;
    }


    close(fdTemp);

    if (!foundDevice) {
        return MA_NO_DEVICE;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_uninit__oss(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        close(pDevice->oss.fdCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        close(pDevice->oss.fdPlayback);
    }

    return MA_SUCCESS;
}

static int ma_format_to_oss(ma_format format)
{
    int ossFormat = AFMT_U8;
    switch (format) {
        case ma_format_s16: ossFormat = (ma_is_little_endian()) ? AFMT_S16_LE : AFMT_S16_BE; break;
        case ma_format_s24: ossFormat = (ma_is_little_endian()) ? AFMT_S32_LE : AFMT_S32_BE; break;
        case ma_format_s32: ossFormat = (ma_is_little_endian()) ? AFMT_S32_LE : AFMT_S32_BE; break;
        case ma_format_f32: ossFormat = (ma_is_little_endian()) ? AFMT_S16_LE : AFMT_S16_BE; break;
        case ma_format_u8:
        default: ossFormat = AFMT_U8; break;
    }

    return ossFormat;
}

static ma_format ma_format_from_oss(int ossFormat)
{
    if (ossFormat == AFMT_U8) {
        return ma_format_u8;
    } else {
        if (ma_is_little_endian()) {
            switch (ossFormat) {
                case AFMT_S16_LE: return ma_format_s16;
                case AFMT_S32_LE: return ma_format_s32;
                default: return ma_format_unknown;
            }
        } else {
            switch (ossFormat) {
                case AFMT_S16_BE: return ma_format_s16;
                case AFMT_S32_BE: return ma_format_s32;
                default: return ma_format_unknown;
            }
        }
    }

    return ma_format_unknown;
}

static ma_result ma_device_init_fd__oss(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptor, ma_device_type deviceType)
{
    ma_result result;
    int ossResult;
    int fd;
    const ma_device_id* pDeviceID = NULL;
    ma_share_mode shareMode;
    int ossFormat;
    int ossChannels;
    int ossSampleRate;
    int ossFragment;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(deviceType != ma_device_type_duplex);

    pDeviceID     = pDescriptor->pDeviceID;
    shareMode     = pDescriptor->shareMode;
    ossFormat     = ma_format_to_oss((pDescriptor->format != ma_format_unknown) ? pDescriptor->format : ma_format_s16); /* Use s16 by default because OSS doesn't like floating point. */
    ossChannels   = (int)(pDescriptor->channels   > 0) ? pDescriptor->channels   : MA_DEFAULT_CHANNELS;
    ossSampleRate = (int)(pDescriptor->sampleRate > 0) ? pDescriptor->sampleRate : MA_DEFAULT_SAMPLE_RATE;

    result = ma_context_open_device__oss(pDevice->pContext, deviceType, pDeviceID, shareMode, &fd);
    if (result != MA_SUCCESS) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to open device.");
        return result;
    }

    /*
    The OSS documentation is very clear about the order we should be initializing the device's properties:
      1) Format
      2) Channels
      3) Sample rate.
    */

    /* Format. */
    ossResult = ioctl(fd, SNDCTL_DSP_SETFMT, &ossFormat);
    if (ossResult == -1) {
        close(fd);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to set format.");
        return ma_result_from_errno(errno);
    }

    /* Channels. */
    ossResult = ioctl(fd, SNDCTL_DSP_CHANNELS, &ossChannels);
    if (ossResult == -1) {
        close(fd);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to set channel count.");
        return ma_result_from_errno(errno);
    }

    /* Sample Rate. */
    ossResult = ioctl(fd, SNDCTL_DSP_SPEED, &ossSampleRate);
    if (ossResult == -1) {
        close(fd);
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to set sample rate.");
        return ma_result_from_errno(errno);
    }

    /*
    Buffer.

    The documentation says that the fragment settings should be set as soon as possible, but I'm not sure if
    it should be done before or after format/channels/rate.

    OSS wants the fragment size in bytes and a power of 2. When setting, we specify the power, not the actual
    value.
    */
    {
        ma_uint32 periodSizeInFrames;
        ma_uint32 periodSizeInBytes;
        ma_uint32 ossFragmentSizePower;

        periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, (ma_uint32)ossSampleRate, pConfig->performanceProfile);

        periodSizeInBytes = ma_round_to_power_of_2(periodSizeInFrames * ma_get_bytes_per_frame(ma_format_from_oss(ossFormat), ossChannels));
        if (periodSizeInBytes < 16) {
            periodSizeInBytes = 16;
        }

        ossFragmentSizePower = 4;
        periodSizeInBytes >>= 4;
        while (periodSizeInBytes >>= 1) {
            ossFragmentSizePower += 1;
        }

        ossFragment = (int)((pConfig->periods << 16) | ossFragmentSizePower);
        ossResult = ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &ossFragment);
        if (ossResult == -1) {
            close(fd);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to set fragment size and period count.");
            return ma_result_from_errno(errno);
        }
    }

    /* Internal settings. */
    if (deviceType == ma_device_type_capture) {
        pDevice->oss.fdCapture  = fd;
    } else {
        pDevice->oss.fdPlayback = fd;
    }

    pDescriptor->format             = ma_format_from_oss(ossFormat);
    pDescriptor->channels           = ossChannels;
    pDescriptor->sampleRate         = ossSampleRate;
    ma_channel_map_init_standard(ma_standard_channel_map_sound4, pDescriptor->channelMap, ma_countof(pDescriptor->channelMap), pDescriptor->channels);
    pDescriptor->periodCount        = (ma_uint32)(ossFragment >> 16);
    pDescriptor->periodSizeInFrames = (ma_uint32)(1 << (ossFragment & 0xFFFF)) / ma_get_bytes_per_frame(pDescriptor->format, pDescriptor->channels);

    if (pDescriptor->format == ma_format_unknown) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] The device's internal format is not supported by miniaudio.");
        return MA_FORMAT_NOT_SUPPORTED;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_init__oss(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    MA_ASSERT(pDevice  != NULL);
    MA_ASSERT(pConfig  != NULL);

    MA_ZERO_OBJECT(&pDevice->oss);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_fd__oss(pDevice, pConfig, pDescriptorCapture, ma_device_type_capture);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to open device.");
            return result;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_result result = ma_device_init_fd__oss(pDevice, pConfig, pDescriptorPlayback, ma_device_type_playback);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to open device.");
            return result;
        }
    }

    return MA_SUCCESS;
}

/*
Note on Starting and Stopping
=============================
In the past I was using SNDCTL_DSP_HALT to stop the device, however this results in issues when
trying to resume the device again. If we use SNDCTL_DSP_HALT, the next write() or read() will
fail. Instead what we need to do is just not write or read to and from the device when the
device is not running.

As a result, both the start and stop functions for OSS are just empty stubs. The starting and
stopping logic is handled by ma_device_write__oss() and ma_device_read__oss(). These will check
the device state, and if the device is stopped they will simply not do any kind of processing.

The downside to this technique is that I've noticed a fairly lengthy delay in stopping the
device, up to a second. This is on a virtual machine, and as such might just be due to the
virtual drivers, but I'm not fully sure. I am not sure how to work around this problem so for
the moment that's just how it's going to have to be.

When starting the device, OSS will automatically start it when write() or read() is called.
*/
static ma_result ma_device_start__oss(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /* The device is automatically started with reading and writing. */
    (void)pDevice;

    return MA_SUCCESS;
}

static ma_result ma_device_stop__oss(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /* See note above on why this is empty. */
    (void)pDevice;

    return MA_SUCCESS;
}

static ma_result ma_device_write__oss(ma_device* pDevice, const void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesWritten)
{
    int resultOSS;
    ma_uint32 deviceState;

    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    /* Don't do any processing if the device is stopped. */
    deviceState = ma_device_get_state(pDevice);
    if (deviceState != ma_device_state_started && deviceState != ma_device_state_starting) {
        return MA_SUCCESS;
    }

    resultOSS = write(pDevice->oss.fdPlayback, pPCMFrames, frameCount * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));
    if (resultOSS < 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to send data from the client to the device.");
        return ma_result_from_errno(errno);
    }

    if (pFramesWritten != NULL) {
        *pFramesWritten = (ma_uint32)resultOSS / ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    }

    return MA_SUCCESS;
}

static ma_result ma_device_read__oss(ma_device* pDevice, void* pPCMFrames, ma_uint32 frameCount, ma_uint32* pFramesRead)
{
    int resultOSS;
    ma_uint32 deviceState;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    /* Don't do any processing if the device is stopped. */
    deviceState = ma_device_get_state(pDevice);
    if (deviceState != ma_device_state_started && deviceState != ma_device_state_starting) {
        return MA_SUCCESS;
    }

    resultOSS = read(pDevice->oss.fdCapture, pPCMFrames, frameCount * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels));
    if (resultOSS < 0) {
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OSS] Failed to read data from the device to be sent to the client.");
        return ma_result_from_errno(errno);
    }

    if (pFramesRead != NULL) {
        *pFramesRead = (ma_uint32)resultOSS / ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
    }

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__oss(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_oss);

    (void)pContext;
    return MA_SUCCESS;
}

static ma_result ma_context_init__oss(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    int fd;
    int ossVersion;
    int result;

    MA_ASSERT(pContext != NULL);

    (void)pConfig;

    /* Try opening a temporary device first so we can get version information. This is closed at the end. */
    fd = ma_open_temp_device__oss();
    if (fd == -1) {
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[OSS] Failed to open temporary device for retrieving system properties.");   /* Looks liks OSS isn't installed, or there are no available devices. */
        return MA_NO_BACKEND;
    }

    /* Grab the OSS version. */
    ossVersion = 0;
    result = ioctl(fd, OSS_GETVERSION, &ossVersion);
    if (result == -1) {
        close(fd);
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_ERROR, "[OSS] Failed to retrieve OSS version.");
        return MA_NO_BACKEND;
    }

    /* The file handle to temp device is no longer needed. Close ASAP. */
    close(fd);

    pContext->oss.versionMajor = ((ossVersion & 0xFF0000) >> 16);
    pContext->oss.versionMinor = ((ossVersion & 0x00FF00) >> 8);

    pCallbacks->onContextInit             = ma_context_init__oss;
    pCallbacks->onContextUninit           = ma_context_uninit__oss;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__oss;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__oss;
    pCallbacks->onDeviceInit              = ma_device_init__oss;
    pCallbacks->onDeviceUninit            = ma_device_uninit__oss;
    pCallbacks->onDeviceStart             = ma_device_start__oss;
    pCallbacks->onDeviceStop              = ma_device_stop__oss;
    pCallbacks->onDeviceRead              = ma_device_read__oss;
    pCallbacks->onDeviceWrite             = ma_device_write__oss;
    pCallbacks->onDeviceDataLoop          = NULL;

    return MA_SUCCESS;
}
#endif  /* MA_HAS_OSS */





/******************************************************************************

AAudio Backend

******************************************************************************/
#ifdef MA_HAS_AAUDIO

#ifdef MA_NO_RUNTIME_LINKING
    #include <AAudio/AAudio.h>
#endif

typedef int32_t                                         ma_aaudio_result_t;
typedef int32_t                                         ma_aaudio_direction_t;
typedef int32_t                                         ma_aaudio_sharing_mode_t;
typedef int32_t                                         ma_aaudio_format_t;
typedef int32_t                                         ma_aaudio_stream_state_t;
typedef int32_t                                         ma_aaudio_performance_mode_t;
typedef int32_t                                         ma_aaudio_usage_t;
typedef int32_t                                         ma_aaudio_content_type_t;
typedef int32_t                                         ma_aaudio_input_preset_t;
typedef int32_t                                         ma_aaudio_allowed_capture_policy_t;
typedef int32_t                                         ma_aaudio_data_callback_result_t;
typedef struct ma_AAudioStreamBuilder_t*                ma_AAudioStreamBuilder;
typedef struct ma_AAudioStream_t*                       ma_AAudioStream;

#define MA_AAUDIO_UNSPECIFIED                           0

/* Result codes. miniaudio only cares about the success code. */
#define MA_AAUDIO_OK                                    0

/* Directions. */
#define MA_AAUDIO_DIRECTION_OUTPUT                      0
#define MA_AAUDIO_DIRECTION_INPUT                       1

/* Sharing modes. */
#define MA_AAUDIO_SHARING_MODE_EXCLUSIVE                0
#define MA_AAUDIO_SHARING_MODE_SHARED                   1

/* Formats. */
#define MA_AAUDIO_FORMAT_PCM_I16                        1
#define MA_AAUDIO_FORMAT_PCM_FLOAT                      2

/* Stream states. */
#define MA_AAUDIO_STREAM_STATE_UNINITIALIZED            0
#define MA_AAUDIO_STREAM_STATE_UNKNOWN                  1
#define MA_AAUDIO_STREAM_STATE_OPEN                     2
#define MA_AAUDIO_STREAM_STATE_STARTING                 3
#define MA_AAUDIO_STREAM_STATE_STARTED                  4
#define MA_AAUDIO_STREAM_STATE_PAUSING                  5
#define MA_AAUDIO_STREAM_STATE_PAUSED                   6
#define MA_AAUDIO_STREAM_STATE_FLUSHING                 7
#define MA_AAUDIO_STREAM_STATE_FLUSHED                  8
#define MA_AAUDIO_STREAM_STATE_STOPPING                 9
#define MA_AAUDIO_STREAM_STATE_STOPPED                  10
#define MA_AAUDIO_STREAM_STATE_CLOSING                  11
#define MA_AAUDIO_STREAM_STATE_CLOSED                   12
#define MA_AAUDIO_STREAM_STATE_DISCONNECTED             13

/* Performance modes. */
#define MA_AAUDIO_PERFORMANCE_MODE_NONE                 10
#define MA_AAUDIO_PERFORMANCE_MODE_POWER_SAVING         11
#define MA_AAUDIO_PERFORMANCE_MODE_LOW_LATENCY          12

/* Usage types. */
#define MA_AAUDIO_USAGE_MEDIA                           1
#define MA_AAUDIO_USAGE_VOICE_COMMUNICATION             2
#define MA_AAUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING  3
#define MA_AAUDIO_USAGE_ALARM                           4
#define MA_AAUDIO_USAGE_NOTIFICATION                    5
#define MA_AAUDIO_USAGE_NOTIFICATION_RINGTONE           6
#define MA_AAUDIO_USAGE_NOTIFICATION_EVENT              10
#define MA_AAUDIO_USAGE_ASSISTANCE_ACCESSIBILITY        11
#define MA_AAUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE  12
#define MA_AAUDIO_USAGE_ASSISTANCE_SONIFICATION         13
#define MA_AAUDIO_USAGE_GAME                            14
#define MA_AAUDIO_USAGE_ASSISTANT                       16
#define MA_AAUDIO_SYSTEM_USAGE_EMERGENCY                1000
#define MA_AAUDIO_SYSTEM_USAGE_SAFETY                   1001
#define MA_AAUDIO_SYSTEM_USAGE_VEHICLE_STATUS           1002
#define MA_AAUDIO_SYSTEM_USAGE_ANNOUNCEMENT             1003

/* Content types. */
#define MA_AAUDIO_CONTENT_TYPE_SPEECH                   1
#define MA_AAUDIO_CONTENT_TYPE_MUSIC                    2
#define MA_AAUDIO_CONTENT_TYPE_MOVIE                    3
#define MA_AAUDIO_CONTENT_TYPE_SONIFICATION             4

/* Input presets. */
#define MA_AAUDIO_INPUT_PRESET_GENERIC                  1
#define MA_AAUDIO_INPUT_PRESET_CAMCORDER                5
#define MA_AAUDIO_INPUT_PRESET_VOICE_RECOGNITION        6
#define MA_AAUDIO_INPUT_PRESET_VOICE_COMMUNICATION      7
#define MA_AAUDIO_INPUT_PRESET_UNPROCESSED              9
#define MA_AAUDIO_INPUT_PRESET_VOICE_PERFORMANCE        10

/* Allowed Capture Policies */
#define MA_AAUDIO_ALLOW_CAPTURE_BY_ALL                  1
#define MA_AAUDIO_ALLOW_CAPTURE_BY_SYSTEM               2
#define MA_AAUDIO_ALLOW_CAPTURE_BY_NONE                 3

/* Callback results. */
#define MA_AAUDIO_CALLBACK_RESULT_CONTINUE              0
#define MA_AAUDIO_CALLBACK_RESULT_STOP                  1


typedef ma_aaudio_data_callback_result_t (* ma_AAudioStream_dataCallback) (ma_AAudioStream* pStream, void* pUserData, void* pAudioData, int32_t numFrames);
typedef void                             (* ma_AAudioStream_errorCallback)(ma_AAudioStream *pStream, void *pUserData, ma_aaudio_result_t error);

typedef ma_aaudio_result_t       (* MA_PFN_AAudio_createStreamBuilder)                   (ma_AAudioStreamBuilder** ppBuilder);
typedef ma_aaudio_result_t       (* MA_PFN_AAudioStreamBuilder_delete)                   (ma_AAudioStreamBuilder* pBuilder);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setDeviceId)              (ma_AAudioStreamBuilder* pBuilder, int32_t deviceId);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setDirection)             (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_direction_t direction);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setSharingMode)           (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_sharing_mode_t sharingMode);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setFormat)                (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_format_t format);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setChannelCount)          (ma_AAudioStreamBuilder* pBuilder, int32_t channelCount);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setSampleRate)            (ma_AAudioStreamBuilder* pBuilder, int32_t sampleRate);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setBufferCapacityInFrames)(ma_AAudioStreamBuilder* pBuilder, int32_t numFrames);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setFramesPerDataCallback) (ma_AAudioStreamBuilder* pBuilder, int32_t numFrames);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setDataCallback)          (ma_AAudioStreamBuilder* pBuilder, ma_AAudioStream_dataCallback callback, void* pUserData);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setErrorCallback)         (ma_AAudioStreamBuilder* pBuilder, ma_AAudioStream_errorCallback callback, void* pUserData);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setPerformanceMode)       (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_performance_mode_t mode);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setUsage)                 (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_usage_t contentType);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setContentType)           (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_content_type_t contentType);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setInputPreset)           (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_input_preset_t inputPreset);
typedef void                     (* MA_PFN_AAudioStreamBuilder_setAllowedCapturePolicy)  (ma_AAudioStreamBuilder* pBuilder, ma_aaudio_allowed_capture_policy_t policy);
typedef ma_aaudio_result_t       (* MA_PFN_AAudioStreamBuilder_openStream)               (ma_AAudioStreamBuilder* pBuilder, ma_AAudioStream** ppStream);
typedef ma_aaudio_result_t       (* MA_PFN_AAudioStream_close)                           (ma_AAudioStream* pStream);
typedef ma_aaudio_stream_state_t (* MA_PFN_AAudioStream_getState)                        (ma_AAudioStream* pStream);
typedef ma_aaudio_result_t       (* MA_PFN_AAudioStream_waitForStateChange)              (ma_AAudioStream* pStream, ma_aaudio_stream_state_t inputState, ma_aaudio_stream_state_t* pNextState, int64_t timeoutInNanoseconds);
typedef ma_aaudio_format_t       (* MA_PFN_AAudioStream_getFormat)                       (ma_AAudioStream* pStream);
typedef int32_t                  (* MA_PFN_AAudioStream_getChannelCount)                 (ma_AAudioStream* pStream);
typedef int32_t                  (* MA_PFN_AAudioStream_getSampleRate)                   (ma_AAudioStream* pStream);
typedef int32_t                  (* MA_PFN_AAudioStream_getBufferCapacityInFrames)       (ma_AAudioStream* pStream);
typedef int32_t                  (* MA_PFN_AAudioStream_getFramesPerDataCallback)        (ma_AAudioStream* pStream);
typedef int32_t                  (* MA_PFN_AAudioStream_getFramesPerBurst)               (ma_AAudioStream* pStream);
typedef ma_aaudio_result_t       (* MA_PFN_AAudioStream_requestStart)                    (ma_AAudioStream* pStream);
typedef ma_aaudio_result_t       (* MA_PFN_AAudioStream_requestStop)                     (ma_AAudioStream* pStream);

static ma_result ma_result_from_aaudio(ma_aaudio_result_t resultAA)
{
    switch (resultAA)
    {
        case MA_AAUDIO_OK: return MA_SUCCESS;
        default: break;
    }

    return MA_ERROR;
}

static ma_aaudio_usage_t ma_to_usage__aaudio(ma_aaudio_usage usage)
{
    switch (usage) {
        case ma_aaudio_usage_media:                          return MA_AAUDIO_USAGE_MEDIA;
        case ma_aaudio_usage_voice_communication:            return MA_AAUDIO_USAGE_VOICE_COMMUNICATION;
        case ma_aaudio_usage_voice_communication_signalling: return MA_AAUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
        case ma_aaudio_usage_alarm:                          return MA_AAUDIO_USAGE_ALARM;
        case ma_aaudio_usage_notification:                   return MA_AAUDIO_USAGE_NOTIFICATION;
        case ma_aaudio_usage_notification_ringtone:          return MA_AAUDIO_USAGE_NOTIFICATION_RINGTONE;
        case ma_aaudio_usage_notification_event:             return MA_AAUDIO_USAGE_NOTIFICATION_EVENT;
        case ma_aaudio_usage_assistance_accessibility:       return MA_AAUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
        case ma_aaudio_usage_assistance_navigation_guidance: return MA_AAUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE;
        case ma_aaudio_usage_assistance_sonification:        return MA_AAUDIO_USAGE_ASSISTANCE_SONIFICATION;
        case ma_aaudio_usage_game:                           return MA_AAUDIO_USAGE_GAME;
        case ma_aaudio_usage_assitant:                       return MA_AAUDIO_USAGE_ASSISTANT;
        case ma_aaudio_usage_emergency:                      return MA_AAUDIO_SYSTEM_USAGE_EMERGENCY;
        case ma_aaudio_usage_safety:                         return MA_AAUDIO_SYSTEM_USAGE_SAFETY;
        case ma_aaudio_usage_vehicle_status:                 return MA_AAUDIO_SYSTEM_USAGE_VEHICLE_STATUS;
        case ma_aaudio_usage_announcement:                   return MA_AAUDIO_SYSTEM_USAGE_ANNOUNCEMENT;
        default: break;
    }

    return MA_AAUDIO_USAGE_MEDIA;
}

static ma_aaudio_content_type_t ma_to_content_type__aaudio(ma_aaudio_content_type contentType)
{
    switch (contentType) {
        case ma_aaudio_content_type_speech:       return MA_AAUDIO_CONTENT_TYPE_SPEECH;
        case ma_aaudio_content_type_music:        return MA_AAUDIO_CONTENT_TYPE_MUSIC;
        case ma_aaudio_content_type_movie:        return MA_AAUDIO_CONTENT_TYPE_MOVIE;
        case ma_aaudio_content_type_sonification: return MA_AAUDIO_CONTENT_TYPE_SONIFICATION;
        default: break;
    }

    return MA_AAUDIO_CONTENT_TYPE_SPEECH;
}

static ma_aaudio_input_preset_t ma_to_input_preset__aaudio(ma_aaudio_input_preset inputPreset)
{
    switch (inputPreset) {
        case ma_aaudio_input_preset_generic:             return MA_AAUDIO_INPUT_PRESET_GENERIC;
        case ma_aaudio_input_preset_camcorder:           return MA_AAUDIO_INPUT_PRESET_CAMCORDER;
        case ma_aaudio_input_preset_voice_recognition:   return MA_AAUDIO_INPUT_PRESET_VOICE_RECOGNITION;
        case ma_aaudio_input_preset_voice_communication: return MA_AAUDIO_INPUT_PRESET_VOICE_COMMUNICATION;
        case ma_aaudio_input_preset_unprocessed:         return MA_AAUDIO_INPUT_PRESET_UNPROCESSED;
        case ma_aaudio_input_preset_voice_performance:   return MA_AAUDIO_INPUT_PRESET_VOICE_PERFORMANCE;
        default: break;
    }

    return MA_AAUDIO_INPUT_PRESET_GENERIC;
}

static ma_aaudio_allowed_capture_policy_t ma_to_allowed_capture_policy__aaudio(ma_aaudio_allowed_capture_policy allowedCapturePolicy)
{
    switch (allowedCapturePolicy) {
        case ma_aaudio_allow_capture_by_all:    return MA_AAUDIO_ALLOW_CAPTURE_BY_ALL;
        case ma_aaudio_allow_capture_by_system: return MA_AAUDIO_ALLOW_CAPTURE_BY_SYSTEM;
        case ma_aaudio_allow_capture_by_none:   return MA_AAUDIO_ALLOW_CAPTURE_BY_NONE;
        default: break;
    }

    return MA_AAUDIO_ALLOW_CAPTURE_BY_ALL;
}

static void ma_stream_error_callback__aaudio(ma_AAudioStream* pStream, void* pUserData, ma_aaudio_result_t error)
{
    ma_result result;
    ma_job job;
    ma_device* pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    (void)error;
    ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[AAudio] ERROR CALLBACK: error=%d, AAudioStream_getState()=%d\n", error, ((MA_PFN_AAudioStream_getState)pDevice->pContext->aaudio.AAudioStream_getState)(pStream));
    /*
    When we get an error, we'll assume that the stream is in an erroneous state and needs to be restarted. From the documentation,
    we cannot do this from the error callback. Therefore we are going to use an event thread for the AAudio backend to do this
    cleanly and safely.
    */
    job = ma_job_init(MA_JOB_TYPE_DEVICE_AAUDIO_REROUTE);
    job.data.device.aaudio.reroute.pDevice = pDevice;

    if (pStream == pDevice->aaudio.pStreamCapture) {
        job.data.device.aaudio.reroute.deviceType = ma_device_type_capture;
    }
    else {
        job.data.device.aaudio.reroute.deviceType = ma_device_type_playback;
    }

    result = ma_device_job_thread_post(&pDevice->pContext->aaudio.jobThread, &job);
    if (result != MA_SUCCESS) {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[AAudio] Device Disconnected. Failed to post job for rerouting.\n");
        return;
    }
}

static ma_aaudio_data_callback_result_t ma_stream_data_callback_capture__aaudio(ma_AAudioStream* pStream, void* pUserData, void* pAudioData, int32_t frameCount)
{
    ma_device* pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    if (frameCount > 0) {
        ma_device_handle_backend_data_callback(pDevice, NULL, pAudioData, (ma_uint32)frameCount);
    }

    (void)pStream;
    return MA_AAUDIO_CALLBACK_RESULT_CONTINUE;
}

static ma_aaudio_data_callback_result_t ma_stream_data_callback_playback__aaudio(ma_AAudioStream* pStream, void* pUserData, void* pAudioData, int32_t frameCount)
{
    ma_device* pDevice = (ma_device*)pUserData;
    MA_ASSERT(pDevice != NULL);

    /*
    I've had a report that AAudio can sometimes post a frame count of 0. We need to check for that here
    so we don't get any errors at a deeper level. I'm doing the same with the capture side for safety,
    though I've not yet had any reports about that one.
    */
    if (frameCount > 0) {
        ma_device_handle_backend_data_callback(pDevice, pAudioData, NULL, (ma_uint32)frameCount);
    }

    (void)pStream;
    return MA_AAUDIO_CALLBACK_RESULT_CONTINUE;
}

static ma_result ma_create_and_configure_AAudioStreamBuilder__aaudio(ma_context* pContext, const ma_device_id* pDeviceID, ma_device_type deviceType, ma_share_mode shareMode, const ma_device_descriptor* pDescriptor, const ma_device_config* pConfig, ma_device* pDevice, ma_AAudioStreamBuilder** ppBuilder)
{
    ma_AAudioStreamBuilder* pBuilder;
    ma_aaudio_result_t resultAA;

    /* Safety. */
    *ppBuilder = NULL;

    resultAA = ((MA_PFN_AAudio_createStreamBuilder)pContext->aaudio.AAudio_createStreamBuilder)(&pBuilder);
    if (resultAA != MA_AAUDIO_OK) {
        return ma_result_from_aaudio(resultAA);
    }

    if (pDeviceID != NULL) {
        ((MA_PFN_AAudioStreamBuilder_setDeviceId)pContext->aaudio.AAudioStreamBuilder_setDeviceId)(pBuilder, pDeviceID->aaudio);
    }

    ((MA_PFN_AAudioStreamBuilder_setDirection)pContext->aaudio.AAudioStreamBuilder_setDirection)(pBuilder, (deviceType == ma_device_type_playback) ? MA_AAUDIO_DIRECTION_OUTPUT : MA_AAUDIO_DIRECTION_INPUT);
    ((MA_PFN_AAudioStreamBuilder_setSharingMode)pContext->aaudio.AAudioStreamBuilder_setSharingMode)(pBuilder, (shareMode == ma_share_mode_shared) ? MA_AAUDIO_SHARING_MODE_SHARED : MA_AAUDIO_SHARING_MODE_EXCLUSIVE);


    /* If we have a device descriptor make sure we configure the stream builder to take our requested parameters. */
    if (pDescriptor != NULL) {
        MA_ASSERT(pConfig != NULL); /* We must have a device config if we also have a descriptor. The config is required for AAudio specific configuration options. */

        if (pDescriptor->sampleRate != 0) {
            ((MA_PFN_AAudioStreamBuilder_setSampleRate)pContext->aaudio.AAudioStreamBuilder_setSampleRate)(pBuilder, pDescriptor->sampleRate);
        }

        if (pDescriptor->channels != 0) {
            ((MA_PFN_AAudioStreamBuilder_setChannelCount)pContext->aaudio.AAudioStreamBuilder_setChannelCount)(pBuilder, pDescriptor->channels);
        }

        if (pDescriptor->format != ma_format_unknown) {
            ((MA_PFN_AAudioStreamBuilder_setFormat)pContext->aaudio.AAudioStreamBuilder_setFormat)(pBuilder, (pDescriptor->format == ma_format_s16) ? MA_AAUDIO_FORMAT_PCM_I16 : MA_AAUDIO_FORMAT_PCM_FLOAT);
        }


        /*
        There have been reports where setting the frames per data callback results in an error.
        In particular, re-routing may inadvertently switch from low-latency mode, resulting in a less stable
        stream from the legacy path (AudioStreamLegacy). To address this, we simply don't set the value. It
        can still be set if it's explicitly requested via the aaudio.allowSetBufferCapacity variable in the
        device config.
        */
        if ((!pConfig->aaudio.enableCompatibilityWorkarounds || ma_android_sdk_version() > 30) && pConfig->aaudio.allowSetBufferCapacity) {
            /*
            AAudio is annoying when it comes to its buffer calculation stuff because it doesn't let you
            retrieve the actual sample rate until after you've opened the stream. But you need to configure
            the buffer capacity before you open the stream... :/

            To solve, we're just going to assume MA_DEFAULT_SAMPLE_RATE (48000) and move on.
            */
            ma_uint32 bufferCapacityInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptor, pDescriptor->sampleRate, pConfig->performanceProfile) * pDescriptor->periodCount;

            ((MA_PFN_AAudioStreamBuilder_setBufferCapacityInFrames)pContext->aaudio.AAudioStreamBuilder_setBufferCapacityInFrames)(pBuilder, bufferCapacityInFrames);
            ((MA_PFN_AAudioStreamBuilder_setFramesPerDataCallback)pContext->aaudio.AAudioStreamBuilder_setFramesPerDataCallback)(pBuilder, bufferCapacityInFrames / pDescriptor->periodCount);
        }

        if (deviceType == ma_device_type_capture) {
            if (pConfig->aaudio.inputPreset != ma_aaudio_input_preset_default && pContext->aaudio.AAudioStreamBuilder_setInputPreset != NULL) {
                ((MA_PFN_AAudioStreamBuilder_setInputPreset)pContext->aaudio.AAudioStreamBuilder_setInputPreset)(pBuilder, ma_to_input_preset__aaudio(pConfig->aaudio.inputPreset));
            }

            ((MA_PFN_AAudioStreamBuilder_setDataCallback)pContext->aaudio.AAudioStreamBuilder_setDataCallback)(pBuilder, ma_stream_data_callback_capture__aaudio, (void*)pDevice);
        } else {
            if (pConfig->aaudio.usage != ma_aaudio_usage_default && pContext->aaudio.AAudioStreamBuilder_setUsage != NULL) {
                ((MA_PFN_AAudioStreamBuilder_setUsage)pContext->aaudio.AAudioStreamBuilder_setUsage)(pBuilder, ma_to_usage__aaudio(pConfig->aaudio.usage));
            }

            if (pConfig->aaudio.contentType != ma_aaudio_content_type_default && pContext->aaudio.AAudioStreamBuilder_setContentType != NULL) {
                ((MA_PFN_AAudioStreamBuilder_setContentType)pContext->aaudio.AAudioStreamBuilder_setContentType)(pBuilder, ma_to_content_type__aaudio(pConfig->aaudio.contentType));
            }

            if (pConfig->aaudio.allowedCapturePolicy != ma_aaudio_allow_capture_default && pContext->aaudio.AAudioStreamBuilder_setAllowedCapturePolicy != NULL) {
                ((MA_PFN_AAudioStreamBuilder_setAllowedCapturePolicy)pContext->aaudio.AAudioStreamBuilder_setAllowedCapturePolicy)(pBuilder, ma_to_allowed_capture_policy__aaudio(pConfig->aaudio.allowedCapturePolicy));
            }

            ((MA_PFN_AAudioStreamBuilder_setDataCallback)pContext->aaudio.AAudioStreamBuilder_setDataCallback)(pBuilder, ma_stream_data_callback_playback__aaudio, (void*)pDevice);
        }

        /*
        If we set AAUDIO_PERFORMANCE_MODE_LOW_LATENCY, we allow for MMAP (non-legacy path).
        Since there's a mapping between miniaudio's performance profiles and AAudio's performance modes, let's use it.
        Beware though, with a conservative performance profile, AAudio will indeed take the legacy path.
        */
        ((MA_PFN_AAudioStreamBuilder_setPerformanceMode)pContext->aaudio.AAudioStreamBuilder_setPerformanceMode)(pBuilder, (pConfig->performanceProfile == ma_performance_profile_low_latency) ? MA_AAUDIO_PERFORMANCE_MODE_LOW_LATENCY : MA_AAUDIO_PERFORMANCE_MODE_NONE);

        /* We need to set an error callback to detect device changes. */
        if (pDevice != NULL) {  /* <-- pDevice should never be null if pDescriptor is not null, which is always the case if we hit this branch. Check anyway for safety. */
            ((MA_PFN_AAudioStreamBuilder_setErrorCallback)pContext->aaudio.AAudioStreamBuilder_setErrorCallback)(pBuilder, ma_stream_error_callback__aaudio, (void*)pDevice);
        }
    }

    *ppBuilder = pBuilder;

    return MA_SUCCESS;
}

static ma_result ma_open_stream_and_close_builder__aaudio(ma_context* pContext, ma_AAudioStreamBuilder* pBuilder, ma_AAudioStream** ppStream)
{
    ma_result result;

    result = ma_result_from_aaudio(((MA_PFN_AAudioStreamBuilder_openStream)pContext->aaudio.AAudioStreamBuilder_openStream)(pBuilder, ppStream));
    ((MA_PFN_AAudioStreamBuilder_delete)pContext->aaudio.AAudioStreamBuilder_delete)(pBuilder);

    return result;
}

static ma_result ma_open_stream_basic__aaudio(ma_context* pContext, const ma_device_id* pDeviceID, ma_device_type deviceType, ma_share_mode shareMode, ma_AAudioStream** ppStream)
{
    ma_result result;
    ma_AAudioStreamBuilder* pBuilder;

    *ppStream = NULL;

    result = ma_create_and_configure_AAudioStreamBuilder__aaudio(pContext, pDeviceID, deviceType, shareMode, NULL, NULL, NULL, &pBuilder);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Let's give AAudio a hint to avoid the legacy path (AudioStreamLegacy). */
    ((MA_PFN_AAudioStreamBuilder_setPerformanceMode)pContext->aaudio.AAudioStreamBuilder_setPerformanceMode)(pBuilder, MA_AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);

    return ma_open_stream_and_close_builder__aaudio(pContext, pBuilder, ppStream);
}

static ma_result ma_open_stream__aaudio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_type deviceType, const ma_device_descriptor* pDescriptor, ma_AAudioStream** ppStream)
{
    ma_result result;
    ma_AAudioStreamBuilder* pBuilder;

    MA_ASSERT(pDevice != NULL);
    MA_ASSERT(pDescriptor != NULL);
    MA_ASSERT(deviceType != ma_device_type_duplex);   /* This function should not be called for a full-duplex device type. */

    *ppStream = NULL;

    result = ma_create_and_configure_AAudioStreamBuilder__aaudio(pDevice->pContext, pDescriptor->pDeviceID, deviceType, pDescriptor->shareMode, pDescriptor, pConfig, pDevice, &pBuilder);
    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_open_stream_and_close_builder__aaudio(pDevice->pContext, pBuilder, ppStream);
}

static ma_result ma_close_stream__aaudio(ma_context* pContext, ma_AAudioStream* pStream)
{
    if (pStream == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_result_from_aaudio(((MA_PFN_AAudioStream_close)pContext->aaudio.AAudioStream_close)(pStream));
}

static ma_bool32 ma_has_default_device__aaudio(ma_context* pContext, ma_device_type deviceType)
{
    /* The only way to know this is to try creating a stream. */
    ma_AAudioStream* pStream;
    ma_result result = ma_open_stream_basic__aaudio(pContext, NULL, deviceType, ma_share_mode_shared, &pStream);
    if (result != MA_SUCCESS) {
        return MA_FALSE;
    }

    ma_close_stream__aaudio(pContext, pStream);
    return MA_TRUE;
}

static ma_result ma_wait_for_simple_state_transition__aaudio(ma_context* pContext, ma_AAudioStream* pStream, ma_aaudio_stream_state_t oldState, ma_aaudio_stream_state_t newState)
{
    ma_aaudio_stream_state_t actualNewState;
    ma_aaudio_result_t resultAA = ((MA_PFN_AAudioStream_waitForStateChange)pContext->aaudio.AAudioStream_waitForStateChange)(pStream, oldState, &actualNewState, 5000000000); /* 5 second timeout. */
    if (resultAA != MA_AAUDIO_OK) {
        return ma_result_from_aaudio(resultAA);
    }

    if (newState != actualNewState) {
        return MA_ERROR;   /* Failed to transition into the expected state. */
    }

    return MA_SUCCESS;
}


static ma_result ma_context_enumerate_devices__aaudio(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_bool32 cbResult = MA_TRUE;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* Unfortunately AAudio does not have an enumeration API. Therefore I'm only going to report default devices, but only if it can instantiate a stream. */

    /* Playback. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        deviceInfo.id.aaudio = MA_AAUDIO_UNSPECIFIED;
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);

        if (ma_has_default_device__aaudio(pContext, ma_device_type_playback)) {
            cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
        }
    }

    /* Capture. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        deviceInfo.id.aaudio = MA_AAUDIO_UNSPECIFIED;
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);

        if (ma_has_default_device__aaudio(pContext, ma_device_type_capture)) {
            cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
        }
    }

    return MA_SUCCESS;
}

static void ma_context_add_native_data_format_from_AAudioStream_ex__aaudio(ma_context* pContext, ma_AAudioStream* pStream, ma_format format, ma_uint32 flags, ma_device_info* pDeviceInfo)
{
    MA_ASSERT(pContext    != NULL);
    MA_ASSERT(pStream     != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = format;
    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = ((MA_PFN_AAudioStream_getChannelCount)pContext->aaudio.AAudioStream_getChannelCount)(pStream);
    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = ((MA_PFN_AAudioStream_getSampleRate)pContext->aaudio.AAudioStream_getSampleRate)(pStream);
    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = flags;
    pDeviceInfo->nativeDataFormatCount += 1;
}

static void ma_context_add_native_data_format_from_AAudioStream__aaudio(ma_context* pContext, ma_AAudioStream* pStream, ma_uint32 flags, ma_device_info* pDeviceInfo)
{
    /* AAudio supports s16 and f32. */
    ma_context_add_native_data_format_from_AAudioStream_ex__aaudio(pContext, pStream, ma_format_f32, flags, pDeviceInfo);
    ma_context_add_native_data_format_from_AAudioStream_ex__aaudio(pContext, pStream, ma_format_s16, flags, pDeviceInfo);
}

static ma_result ma_context_get_device_info__aaudio(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_AAudioStream* pStream;
    ma_result result;

    MA_ASSERT(pContext != NULL);

    /* ID */
    if (pDeviceID != NULL) {
        pDeviceInfo->id.aaudio = pDeviceID->aaudio;
    } else {
        pDeviceInfo->id.aaudio = MA_AAUDIO_UNSPECIFIED;
    }

    /* Name */
    if (deviceType == ma_device_type_playback) {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
    } else {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
    }


    pDeviceInfo->nativeDataFormatCount = 0;

    /* We'll need to open the device to get accurate sample rate and channel count information. */
    result = ma_open_stream_basic__aaudio(pContext, pDeviceID, deviceType, ma_share_mode_shared, &pStream);
    if (result != MA_SUCCESS) {
        return result;
    }

    ma_context_add_native_data_format_from_AAudioStream__aaudio(pContext, pStream, 0, pDeviceInfo);

    ma_close_stream__aaudio(pContext, pStream);
    pStream = NULL;

    return MA_SUCCESS;
}

static ma_result ma_close_streams__aaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /* When re-routing, streams may have been closed and never re-opened. Hence the extra checks below. */
    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_close_stream__aaudio(pDevice->pContext, (ma_AAudioStream*)pDevice->aaudio.pStreamCapture);
        pDevice->aaudio.pStreamCapture = NULL;
    }
    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_close_stream__aaudio(pDevice->pContext, (ma_AAudioStream*)pDevice->aaudio.pStreamPlayback);
        pDevice->aaudio.pStreamPlayback = NULL;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_uninit__aaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /* Wait for any rerouting to finish before attempting to close the streams. */
    ma_mutex_lock(&pDevice->aaudio.rerouteLock);
    {
        ma_close_streams__aaudio(pDevice);
    }
    ma_mutex_unlock(&pDevice->aaudio.rerouteLock);

    /* Destroy re-routing lock. */
    ma_mutex_uninit(&pDevice->aaudio.rerouteLock);

    return MA_SUCCESS;
}

static ma_result ma_device_init_by_type__aaudio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_type deviceType, ma_device_descriptor* pDescriptor, ma_AAudioStream** ppStream)
{
    ma_result result;
    int32_t bufferCapacityInFrames;
    int32_t framesPerDataCallback;
    ma_AAudioStream* pStream;

    MA_ASSERT(pDevice     != NULL);
    MA_ASSERT(pConfig     != NULL);
    MA_ASSERT(pDescriptor != NULL);

    *ppStream = NULL;   /* Safety. */

    /* First step is to open the stream. From there we'll be able to extract the internal configuration. */
    result = ma_open_stream__aaudio(pDevice, pConfig, deviceType, pDescriptor, &pStream);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to open the AAudio stream. */
    }

    /* Now extract the internal configuration. */
    pDescriptor->format     = (((MA_PFN_AAudioStream_getFormat)pDevice->pContext->aaudio.AAudioStream_getFormat)(pStream) == MA_AAUDIO_FORMAT_PCM_I16) ? ma_format_s16 : ma_format_f32;
    pDescriptor->channels   = ((MA_PFN_AAudioStream_getChannelCount)pDevice->pContext->aaudio.AAudioStream_getChannelCount)(pStream);
    pDescriptor->sampleRate = ((MA_PFN_AAudioStream_getSampleRate)pDevice->pContext->aaudio.AAudioStream_getSampleRate)(pStream);

    /* For the channel map we need to be sure we don't overflow any buffers. */
    if (pDescriptor->channels <= MA_MAX_CHANNELS) {
        ma_channel_map_init_standard(ma_standard_channel_map_default, pDescriptor->channelMap, ma_countof(pDescriptor->channelMap), pDescriptor->channels); /* <-- Cannot find info on channel order, so assuming a default. */
    } else {
        ma_channel_map_init_blank(pDescriptor->channelMap, MA_MAX_CHANNELS); /* Too many channels. Use a blank channel map. */
    }

    bufferCapacityInFrames = ((MA_PFN_AAudioStream_getBufferCapacityInFrames)pDevice->pContext->aaudio.AAudioStream_getBufferCapacityInFrames)(pStream);
    framesPerDataCallback = ((MA_PFN_AAudioStream_getFramesPerDataCallback)pDevice->pContext->aaudio.AAudioStream_getFramesPerDataCallback)(pStream);

    if (framesPerDataCallback > 0) {
        pDescriptor->periodSizeInFrames = framesPerDataCallback;
        pDescriptor->periodCount        = bufferCapacityInFrames / framesPerDataCallback;
    } else {
        pDescriptor->periodSizeInFrames = bufferCapacityInFrames;
        pDescriptor->periodCount        = 1;
    }

    *ppStream = pStream;

    return MA_SUCCESS;
}

static ma_result ma_device_init_streams__aaudio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    pDevice->aaudio.usage                   = pConfig->aaudio.usage;
    pDevice->aaudio.contentType             = pConfig->aaudio.contentType;
    pDevice->aaudio.inputPreset             = pConfig->aaudio.inputPreset;
    pDevice->aaudio.allowedCapturePolicy    = pConfig->aaudio.allowedCapturePolicy;
    pDevice->aaudio.noAutoStartAfterReroute = pConfig->aaudio.noAutoStartAfterReroute;

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        result = ma_device_init_by_type__aaudio(pDevice, pConfig, ma_device_type_capture, pDescriptorCapture, (ma_AAudioStream**)&pDevice->aaudio.pStreamCapture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        result = ma_device_init_by_type__aaudio(pDevice, pConfig, ma_device_type_playback, pDescriptorPlayback, (ma_AAudioStream**)&pDevice->aaudio.pStreamPlayback);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_init__aaudio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    result = ma_device_init_streams__aaudio(pDevice, pConfig, pDescriptorPlayback, pDescriptorCapture);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_mutex_init(&pDevice->aaudio.rerouteLock);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start_stream__aaudio(ma_device* pDevice, ma_AAudioStream* pStream)
{
    ma_aaudio_result_t resultAA;
    ma_aaudio_stream_state_t currentState;

    MA_ASSERT(pDevice != NULL);

    if (pStream == NULL) {
        return MA_INVALID_ARGS;
    }

    resultAA = ((MA_PFN_AAudioStream_requestStart)pDevice->pContext->aaudio.AAudioStream_requestStart)(pStream);
    if (resultAA != MA_AAUDIO_OK) {
        return ma_result_from_aaudio(resultAA);
    }

    /* Do we actually need to wait for the device to transition into its started state? */

    /* The device should be in either a starting or started state. If it's not set to started we need to wait for it to transition. It should go from starting to started. */
    currentState = ((MA_PFN_AAudioStream_getState)pDevice->pContext->aaudio.AAudioStream_getState)(pStream);
    if (currentState != MA_AAUDIO_STREAM_STATE_STARTED) {
        ma_result result;

        if (currentState != MA_AAUDIO_STREAM_STATE_STARTING) {
            return MA_ERROR;   /* Expecting the stream to be a starting or started state. */
        }

        result = ma_wait_for_simple_state_transition__aaudio(pDevice->pContext, pStream, currentState, MA_AAUDIO_STREAM_STATE_STARTED);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop_stream__aaudio(ma_device* pDevice, ma_AAudioStream* pStream)
{
    ma_aaudio_result_t resultAA;
    ma_aaudio_stream_state_t currentState;

    MA_ASSERT(pDevice != NULL);

    if (pStream == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    From the AAudio documentation:

        The stream will stop after all of the data currently buffered has been played.

    This maps with miniaudio's requirement that device's be drained which means we don't need to implement any draining logic.
    */
    currentState = ((MA_PFN_AAudioStream_getState)pDevice->pContext->aaudio.AAudioStream_getState)(pStream);
    if (currentState == MA_AAUDIO_STREAM_STATE_DISCONNECTED) {
        return MA_SUCCESS;  /* The device is disconnected. Don't try stopping it. */
    }

    resultAA = ((MA_PFN_AAudioStream_requestStop)pDevice->pContext->aaudio.AAudioStream_requestStop)(pStream);
    if (resultAA != MA_AAUDIO_OK) {
        return ma_result_from_aaudio(resultAA);
    }

    /* The device should be in either a stopping or stopped state. If it's not set to started we need to wait for it to transition. It should go from stopping to stopped. */
    currentState = ((MA_PFN_AAudioStream_getState)pDevice->pContext->aaudio.AAudioStream_getState)(pStream);
    if (currentState != MA_AAUDIO_STREAM_STATE_STOPPED) {
        ma_result result;

        if (currentState != MA_AAUDIO_STREAM_STATE_STOPPING) {
            return MA_ERROR;   /* Expecting the stream to be a stopping or stopped state. */
        }

        result = ma_wait_for_simple_state_transition__aaudio(pDevice->pContext, pStream, currentState, MA_AAUDIO_STREAM_STATE_STOPPED);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_start__aaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_result result = ma_device_start_stream__aaudio(pDevice, (ma_AAudioStream*)pDevice->aaudio.pStreamCapture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_result result = ma_device_start_stream__aaudio(pDevice, (ma_AAudioStream*)pDevice->aaudio.pStreamPlayback);
        if (result != MA_SUCCESS) {
            if (pDevice->type == ma_device_type_duplex) {
                ma_device_stop_stream__aaudio(pDevice, (ma_AAudioStream*)pDevice->aaudio.pStreamCapture);
            }
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__aaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_result result = ma_device_stop_stream__aaudio(pDevice, (ma_AAudioStream*)pDevice->aaudio.pStreamCapture);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_result result = ma_device_stop_stream__aaudio(pDevice, (ma_AAudioStream*)pDevice->aaudio.pStreamPlayback);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    ma_device__on_notification_stopped(pDevice);

    return MA_SUCCESS;
}

static ma_result ma_device_reinit__aaudio(ma_device* pDevice, ma_device_type deviceType)
{
    ma_result result;
    int32_t retries = 0;

    MA_ASSERT(pDevice != NULL);

    /*
     TODO: Stop retrying if main thread is about to uninit device.
    */
    ma_mutex_lock(&pDevice->aaudio.rerouteLock);
    {
error_disconnected:
        /* The first thing to do is close the streams. */
        ma_close_streams__aaudio(pDevice);

        /* Now we need to reinitialize each streams. The hardest part with this is just filling output the config and descriptors. */
        ma_device_config deviceConfig;
        ma_device_descriptor descriptorPlayback;
        ma_device_descriptor descriptorCapture;

        deviceConfig = ma_device_config_init(deviceType);
        deviceConfig.playback.pDeviceID             = NULL; /* Only doing rerouting with default devices. */
        deviceConfig.playback.shareMode             = pDevice->playback.shareMode;
        deviceConfig.playback.format                = pDevice->playback.format;
        deviceConfig.playback.channels              = pDevice->playback.channels;
        deviceConfig.capture.pDeviceID              = NULL; /* Only doing rerouting with default devices. */
        deviceConfig.capture.shareMode              = pDevice->capture.shareMode;
        deviceConfig.capture.format                 = pDevice->capture.format;
        deviceConfig.capture.channels               = pDevice->capture.channels;
        deviceConfig.sampleRate                     = pDevice->sampleRate;
        deviceConfig.aaudio.usage                   = pDevice->aaudio.usage;
        deviceConfig.aaudio.contentType             = pDevice->aaudio.contentType;
        deviceConfig.aaudio.inputPreset             = pDevice->aaudio.inputPreset;
        deviceConfig.aaudio.allowedCapturePolicy    = pDevice->aaudio.allowedCapturePolicy;
        deviceConfig.aaudio.noAutoStartAfterReroute = pDevice->aaudio.noAutoStartAfterReroute;
        deviceConfig.periods                        = 1;

        /* Try to get an accurate period size. */
        if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
            deviceConfig.periodSizeInFrames = pDevice->playback.internalPeriodSizeInFrames;
        } else {
            deviceConfig.periodSizeInFrames = pDevice->capture.internalPeriodSizeInFrames;
        }

        if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex || deviceType == ma_device_type_loopback) {
            descriptorCapture.pDeviceID           = deviceConfig.capture.pDeviceID;
            descriptorCapture.shareMode           = deviceConfig.capture.shareMode;
            descriptorCapture.format              = deviceConfig.capture.format;
            descriptorCapture.channels            = deviceConfig.capture.channels;
            descriptorCapture.sampleRate          = deviceConfig.sampleRate;
            descriptorCapture.periodSizeInFrames  = deviceConfig.periodSizeInFrames;
            descriptorCapture.periodCount         = deviceConfig.periods;
        }

        if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
            descriptorPlayback.pDeviceID          = deviceConfig.playback.pDeviceID;
            descriptorPlayback.shareMode          = deviceConfig.playback.shareMode;
            descriptorPlayback.format             = deviceConfig.playback.format;
            descriptorPlayback.channels           = deviceConfig.playback.channels;
            descriptorPlayback.sampleRate         = deviceConfig.sampleRate;
            descriptorPlayback.periodSizeInFrames = deviceConfig.periodSizeInFrames;
            descriptorPlayback.periodCount        = deviceConfig.periods;
        }

        result = ma_device_init_streams__aaudio(pDevice, &deviceConfig, &descriptorPlayback, &descriptorCapture);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[AAudio] Failed to create stream after route change.");
            goto done;
        }

        result = ma_device_post_init(pDevice, deviceType, &descriptorPlayback, &descriptorCapture);
        if (result != MA_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_WARNING, "[AAudio] Failed to initialize device after route change.");
            ma_close_streams__aaudio(pDevice);
            goto done;
        }

        /* We'll only ever do this in response to a reroute. */
        ma_device__on_notification_rerouted(pDevice);

        /* If the device is started, start the streams. Maybe make this configurable? */
        if (ma_device_get_state(pDevice) == ma_device_state_started) {
            if (pDevice->aaudio.noAutoStartAfterReroute == MA_FALSE) {
                result = ma_device_start__aaudio(pDevice);
                if (result != MA_SUCCESS) {
                    /* We got disconnected! Retry a few times, until we find a connected device! */
                    retries += 1;
                    if (retries <= 3) {
                        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[AAudio] Failed to start stream after route change, retrying(%d)", retries);
                        goto error_disconnected;
                    }
                    ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[AAudio] Failed to start stream after route change.");
                    goto done;
                }
            } else {
                ma_device_stop(pDevice);    /* Do a full device stop so we set internal state correctly. */
            }
        }
        
        result = MA_SUCCESS;
    }
done:
    /* Re-routing done */
    ma_mutex_unlock(&pDevice->aaudio.rerouteLock);

    return result;
}

static ma_result ma_device_get_info__aaudio(ma_device* pDevice, ma_device_type type, ma_device_info* pDeviceInfo)
{
    ma_AAudioStream* pStream = NULL;

    MA_ASSERT(pDevice     != NULL);
    MA_ASSERT(type        != ma_device_type_duplex);
    MA_ASSERT(pDeviceInfo != NULL);

    if (type == ma_device_type_capture) {
        pStream = (ma_AAudioStream*)pDevice->aaudio.pStreamCapture;
        pDeviceInfo->id.aaudio = pDevice->capture.id.aaudio;
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);     /* Only supporting default devices. */
    }
    if (type == ma_device_type_playback) {
        pStream = (ma_AAudioStream*)pDevice->aaudio.pStreamPlayback;
        pDeviceInfo->id.aaudio = pDevice->playback.id.aaudio;
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);    /* Only supporting default devices. */
    }

    /* Safety. Should never happen. */
    if (pStream == NULL) {
        return MA_INVALID_OPERATION;
    }

    pDeviceInfo->nativeDataFormatCount = 0;
    ma_context_add_native_data_format_from_AAudioStream__aaudio(pDevice->pContext, pStream, 0, pDeviceInfo);

    return MA_SUCCESS;
}


static ma_result ma_context_uninit__aaudio(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_aaudio);

    ma_device_job_thread_uninit(&pContext->aaudio.jobThread, &pContext->allocationCallbacks);

    ma_dlclose(ma_context_get_log(pContext), pContext->aaudio.hAAudio);
    pContext->aaudio.hAAudio = NULL;

    return MA_SUCCESS;
}

static ma_result ma_context_init__aaudio(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
#if !defined(MA_NO_RUNTIME_LINKING)
    size_t i;
    const char* libNames[] = {
        "libaaudio.so"
    };

    for (i = 0; i < ma_countof(libNames); ++i) {
        pContext->aaudio.hAAudio = ma_dlopen(ma_context_get_log(pContext), libNames[i]);
        if (pContext->aaudio.hAAudio != NULL) {
            break;
        }
    }

    if (pContext->aaudio.hAAudio == NULL) {
        return MA_FAILED_TO_INIT_BACKEND;
    }

    pContext->aaudio.AAudio_createStreamBuilder                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudio_createStreamBuilder");
    pContext->aaudio.AAudioStreamBuilder_delete                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_delete");
    pContext->aaudio.AAudioStreamBuilder_setDeviceId               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setDeviceId");
    pContext->aaudio.AAudioStreamBuilder_setDirection              = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setDirection");
    pContext->aaudio.AAudioStreamBuilder_setSharingMode            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setSharingMode");
    pContext->aaudio.AAudioStreamBuilder_setFormat                 = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setFormat");
    pContext->aaudio.AAudioStreamBuilder_setChannelCount           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setChannelCount");
    pContext->aaudio.AAudioStreamBuilder_setSampleRate             = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setSampleRate");
    pContext->aaudio.AAudioStreamBuilder_setBufferCapacityInFrames = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setBufferCapacityInFrames");
    pContext->aaudio.AAudioStreamBuilder_setFramesPerDataCallback  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setFramesPerDataCallback");
    pContext->aaudio.AAudioStreamBuilder_setDataCallback           = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setDataCallback");
    pContext->aaudio.AAudioStreamBuilder_setErrorCallback          = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setErrorCallback");
    pContext->aaudio.AAudioStreamBuilder_setPerformanceMode        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setPerformanceMode");
    pContext->aaudio.AAudioStreamBuilder_setUsage                  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setUsage");
    pContext->aaudio.AAudioStreamBuilder_setContentType            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setContentType");
    pContext->aaudio.AAudioStreamBuilder_setInputPreset            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setInputPreset");
    pContext->aaudio.AAudioStreamBuilder_setAllowedCapturePolicy   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_setAllowedCapturePolicy");
    pContext->aaudio.AAudioStreamBuilder_openStream                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStreamBuilder_openStream");
    pContext->aaudio.AAudioStream_close                            = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_close");
    pContext->aaudio.AAudioStream_getState                         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getState");
    pContext->aaudio.AAudioStream_waitForStateChange               = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_waitForStateChange");
    pContext->aaudio.AAudioStream_getFormat                        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getFormat");
    pContext->aaudio.AAudioStream_getChannelCount                  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getChannelCount");
    pContext->aaudio.AAudioStream_getSampleRate                    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getSampleRate");
    pContext->aaudio.AAudioStream_getBufferCapacityInFrames        = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getBufferCapacityInFrames");
    pContext->aaudio.AAudioStream_getFramesPerDataCallback         = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getFramesPerDataCallback");
    pContext->aaudio.AAudioStream_getFramesPerBurst                = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_getFramesPerBurst");
    pContext->aaudio.AAudioStream_requestStart                     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_requestStart");
    pContext->aaudio.AAudioStream_requestStop                      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->aaudio.hAAudio, "AAudioStream_requestStop");
#else
    pContext->aaudio.AAudio_createStreamBuilder                    = (ma_proc)AAudio_createStreamBuilder;
    pContext->aaudio.AAudioStreamBuilder_delete                    = (ma_proc)AAudioStreamBuilder_delete;
    pContext->aaudio.AAudioStreamBuilder_setDeviceId               = (ma_proc)AAudioStreamBuilder_setDeviceId;
    pContext->aaudio.AAudioStreamBuilder_setDirection              = (ma_proc)AAudioStreamBuilder_setDirection;
    pContext->aaudio.AAudioStreamBuilder_setSharingMode            = (ma_proc)AAudioStreamBuilder_setSharingMode;
    pContext->aaudio.AAudioStreamBuilder_setFormat                 = (ma_proc)AAudioStreamBuilder_setFormat;
    pContext->aaudio.AAudioStreamBuilder_setChannelCount           = (ma_proc)AAudioStreamBuilder_setChannelCount;
    pContext->aaudio.AAudioStreamBuilder_setSampleRate             = (ma_proc)AAudioStreamBuilder_setSampleRate;
    pContext->aaudio.AAudioStreamBuilder_setBufferCapacityInFrames = (ma_proc)AAudioStreamBuilder_setBufferCapacityInFrames;
    pContext->aaudio.AAudioStreamBuilder_setFramesPerDataCallback  = (ma_proc)AAudioStreamBuilder_setFramesPerDataCallback;
    pContext->aaudio.AAudioStreamBuilder_setDataCallback           = (ma_proc)AAudioStreamBuilder_setDataCallback;
    pContext->aaudio.AAudioStreamBuilder_setErrorCallback          = (ma_proc)AAudioStreamBuilder_setErrorCallback;
    pContext->aaudio.AAudioStreamBuilder_setPerformanceMode        = (ma_proc)AAudioStreamBuilder_setPerformanceMode;
    pContext->aaudio.AAudioStreamBuilder_setUsage                  = (ma_proc)AAudioStreamBuilder_setUsage;
    pContext->aaudio.AAudioStreamBuilder_setContentType            = (ma_proc)AAudioStreamBuilder_setContentType;
    pContext->aaudio.AAudioStreamBuilder_setInputPreset            = (ma_proc)AAudioStreamBuilder_setInputPreset;
    #if defined(__ANDROID_API__) && __ANDROID_API__ >= 29
    pContext->aaudio.AAudioStreamBuilder_setAllowedCapturePolicy   = (ma_proc)AAudioStreamBuilder_setAllowedCapturePolicy;
    #endif
    pContext->aaudio.AAudioStreamBuilder_openStream                = (ma_proc)AAudioStreamBuilder_openStream;
    pContext->aaudio.AAudioStream_close                            = (ma_proc)AAudioStream_close;
    pContext->aaudio.AAudioStream_getState                         = (ma_proc)AAudioStream_getState;
    pContext->aaudio.AAudioStream_waitForStateChange               = (ma_proc)AAudioStream_waitForStateChange;
    pContext->aaudio.AAudioStream_getFormat                        = (ma_proc)AAudioStream_getFormat;
    pContext->aaudio.AAudioStream_getChannelCount                  = (ma_proc)AAudioStream_getChannelCount;
    pContext->aaudio.AAudioStream_getSampleRate                    = (ma_proc)AAudioStream_getSampleRate;
    pContext->aaudio.AAudioStream_getBufferCapacityInFrames        = (ma_proc)AAudioStream_getBufferCapacityInFrames;
    pContext->aaudio.AAudioStream_getFramesPerDataCallback         = (ma_proc)AAudioStream_getFramesPerDataCallback;
    pContext->aaudio.AAudioStream_getFramesPerBurst                = (ma_proc)AAudioStream_getFramesPerBurst;
    pContext->aaudio.AAudioStream_requestStart                     = (ma_proc)AAudioStream_requestStart;
    pContext->aaudio.AAudioStream_requestStop                      = (ma_proc)AAudioStream_requestStop;
#endif

    pCallbacks->onContextInit             = ma_context_init__aaudio;
    pCallbacks->onContextUninit           = ma_context_uninit__aaudio;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__aaudio;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__aaudio;
    pCallbacks->onDeviceInit              = ma_device_init__aaudio;
    pCallbacks->onDeviceUninit            = ma_device_uninit__aaudio;
    pCallbacks->onDeviceStart             = ma_device_start__aaudio;
    pCallbacks->onDeviceStop              = ma_device_stop__aaudio;
    pCallbacks->onDeviceRead              = NULL;   /* Not used because AAudio is asynchronous. */
    pCallbacks->onDeviceWrite             = NULL;   /* Not used because AAudio is asynchronous. */
    pCallbacks->onDeviceDataLoop          = NULL;   /* Not used because AAudio is asynchronous. */
    pCallbacks->onDeviceGetInfo           = ma_device_get_info__aaudio;


    /* We need a job thread so we can deal with rerouting. */
    {
        ma_result result;
        ma_device_job_thread_config jobThreadConfig;

        jobThreadConfig = ma_device_job_thread_config_init();

        result = ma_device_job_thread_init(&jobThreadConfig, &pContext->allocationCallbacks, &pContext->aaudio.jobThread);
        if (result != MA_SUCCESS) {
            ma_dlclose(ma_context_get_log(pContext), pContext->aaudio.hAAudio);
            pContext->aaudio.hAAudio = NULL;
            return result;
        }
    }


    (void)pConfig;
    return MA_SUCCESS;
}

static ma_result ma_job_process__device__aaudio_reroute(ma_job* pJob)
{
    ma_result result;
    ma_device* pDevice;

    MA_ASSERT(pJob != NULL);

    pDevice = (ma_device*)pJob->data.device.aaudio.reroute.pDevice;
    MA_ASSERT(pDevice != NULL);

    /* Here is where we need to reroute the device. To do this we need to uninitialize the stream and reinitialize it. */
    result = ma_device_reinit__aaudio(pDevice, (ma_device_type)pJob->data.device.aaudio.reroute.deviceType);
    if (result != MA_SUCCESS) {
        /*
        Getting here means we failed to reroute the device. The best thing I can think of here is to
        just stop the device.
        */
        ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[AAudio] Stopping device due to reroute failure.");
        ma_device_stop(pDevice);
        return result;
    }

    return MA_SUCCESS;
}
#else
/* Getting here means there is no AAudio backend so we need a no-op job implementation. */
static ma_result ma_job_process__device__aaudio_reroute(ma_job* pJob)
{
    return ma_job_process__noop(pJob);
}
#endif  /* AAudio */


/******************************************************************************

OpenSL|ES Backend

******************************************************************************/
#ifdef MA_HAS_OPENSL
#include <SLES/OpenSLES.h>
#ifdef MA_ANDROID
#include <SLES/OpenSLES_Android.h>
#endif

typedef SLresult (SLAPIENTRY * ma_slCreateEngine_proc)(SLObjectItf* pEngine, SLuint32 numOptions, SLEngineOption* pEngineOptions, SLuint32 numInterfaces, SLInterfaceID* pInterfaceIds, SLboolean* pInterfaceRequired);

/* OpenSL|ES has one-per-application objects :( */
static SLObjectItf g_maEngineObjectSL    = NULL;
static SLEngineItf g_maEngineSL          = NULL;
static ma_uint32   g_maOpenSLInitCounter = 0;
static ma_spinlock g_maOpenSLSpinlock    = 0;   /* For init/uninit. */

#define MA_OPENSL_OBJ(p)         (*((SLObjectItf)(p)))
#define MA_OPENSL_OUTPUTMIX(p)   (*((SLOutputMixItf)(p)))
#define MA_OPENSL_PLAY(p)        (*((SLPlayItf)(p)))
#define MA_OPENSL_RECORD(p)      (*((SLRecordItf)(p)))

#ifdef MA_ANDROID
#define MA_OPENSL_BUFFERQUEUE(p) (*((SLAndroidSimpleBufferQueueItf)(p)))
#else
#define MA_OPENSL_BUFFERQUEUE(p) (*((SLBufferQueueItf)(p)))
#endif

static ma_result ma_result_from_OpenSL(SLuint32 result)
{
    switch (result)
    {
        case SL_RESULT_SUCCESS:                 return MA_SUCCESS;
        case SL_RESULT_PRECONDITIONS_VIOLATED:  return MA_ERROR;
        case SL_RESULT_PARAMETER_INVALID:       return MA_INVALID_ARGS;
        case SL_RESULT_MEMORY_FAILURE:          return MA_OUT_OF_MEMORY;
        case SL_RESULT_RESOURCE_ERROR:          return MA_INVALID_DATA;
        case SL_RESULT_RESOURCE_LOST:           return MA_ERROR;
        case SL_RESULT_IO_ERROR:                return MA_IO_ERROR;
        case SL_RESULT_BUFFER_INSUFFICIENT:     return MA_NO_SPACE;
        case SL_RESULT_CONTENT_CORRUPTED:       return MA_INVALID_DATA;
        case SL_RESULT_CONTENT_UNSUPPORTED:     return MA_FORMAT_NOT_SUPPORTED;
        case SL_RESULT_CONTENT_NOT_FOUND:       return MA_ERROR;
        case SL_RESULT_PERMISSION_DENIED:       return MA_ACCESS_DENIED;
        case SL_RESULT_FEATURE_UNSUPPORTED:     return MA_NOT_IMPLEMENTED;
        case SL_RESULT_INTERNAL_ERROR:          return MA_ERROR;
        case SL_RESULT_UNKNOWN_ERROR:           return MA_ERROR;
        case SL_RESULT_OPERATION_ABORTED:       return MA_ERROR;
        case SL_RESULT_CONTROL_LOST:            return MA_ERROR;
        default:                                return MA_ERROR;
    }
}

/* Converts an individual OpenSL-style channel identifier (SL_SPEAKER_FRONT_LEFT, etc.) to miniaudio. */
static ma_uint8 ma_channel_id_to_ma__opensl(SLuint32 id)
{
    switch (id)
    {
        case SL_SPEAKER_FRONT_LEFT:            return MA_CHANNEL_FRONT_LEFT;
        case SL_SPEAKER_FRONT_RIGHT:           return MA_CHANNEL_FRONT_RIGHT;
        case SL_SPEAKER_FRONT_CENTER:          return MA_CHANNEL_FRONT_CENTER;
        case SL_SPEAKER_LOW_FREQUENCY:         return MA_CHANNEL_LFE;
        case SL_SPEAKER_BACK_LEFT:             return MA_CHANNEL_BACK_LEFT;
        case SL_SPEAKER_BACK_RIGHT:            return MA_CHANNEL_BACK_RIGHT;
        case SL_SPEAKER_FRONT_LEFT_OF_CENTER:  return MA_CHANNEL_FRONT_LEFT_CENTER;
        case SL_SPEAKER_FRONT_RIGHT_OF_CENTER: return MA_CHANNEL_FRONT_RIGHT_CENTER;
        case SL_SPEAKER_BACK_CENTER:           return MA_CHANNEL_BACK_CENTER;
        case SL_SPEAKER_SIDE_LEFT:             return MA_CHANNEL_SIDE_LEFT;
        case SL_SPEAKER_SIDE_RIGHT:            return MA_CHANNEL_SIDE_RIGHT;
        case SL_SPEAKER_TOP_CENTER:            return MA_CHANNEL_TOP_CENTER;
        case SL_SPEAKER_TOP_FRONT_LEFT:        return MA_CHANNEL_TOP_FRONT_LEFT;
        case SL_SPEAKER_TOP_FRONT_CENTER:      return MA_CHANNEL_TOP_FRONT_CENTER;
        case SL_SPEAKER_TOP_FRONT_RIGHT:       return MA_CHANNEL_TOP_FRONT_RIGHT;
        case SL_SPEAKER_TOP_BACK_LEFT:         return MA_CHANNEL_TOP_BACK_LEFT;
        case SL_SPEAKER_TOP_BACK_CENTER:       return MA_CHANNEL_TOP_BACK_CENTER;
        case SL_SPEAKER_TOP_BACK_RIGHT:        return MA_CHANNEL_TOP_BACK_RIGHT;
        default: return 0;
    }
}

/* Converts an individual miniaudio channel identifier (MA_CHANNEL_FRONT_LEFT, etc.) to OpenSL-style. */
static SLuint32 ma_channel_id_to_opensl(ma_uint8 id)
{
    switch (id)
    {
        case MA_CHANNEL_MONO:               return SL_SPEAKER_FRONT_CENTER;
        case MA_CHANNEL_FRONT_LEFT:         return SL_SPEAKER_FRONT_LEFT;
        case MA_CHANNEL_FRONT_RIGHT:        return SL_SPEAKER_FRONT_RIGHT;
        case MA_CHANNEL_FRONT_CENTER:       return SL_SPEAKER_FRONT_CENTER;
        case MA_CHANNEL_LFE:                return SL_SPEAKER_LOW_FREQUENCY;
        case MA_CHANNEL_BACK_LEFT:          return SL_SPEAKER_BACK_LEFT;
        case MA_CHANNEL_BACK_RIGHT:         return SL_SPEAKER_BACK_RIGHT;
        case MA_CHANNEL_FRONT_LEFT_CENTER:  return SL_SPEAKER_FRONT_LEFT_OF_CENTER;
        case MA_CHANNEL_FRONT_RIGHT_CENTER: return SL_SPEAKER_FRONT_RIGHT_OF_CENTER;
        case MA_CHANNEL_BACK_CENTER:        return SL_SPEAKER_BACK_CENTER;
        case MA_CHANNEL_SIDE_LEFT:          return SL_SPEAKER_SIDE_LEFT;
        case MA_CHANNEL_SIDE_RIGHT:         return SL_SPEAKER_SIDE_RIGHT;
        case MA_CHANNEL_TOP_CENTER:         return SL_SPEAKER_TOP_CENTER;
        case MA_CHANNEL_TOP_FRONT_LEFT:     return SL_SPEAKER_TOP_FRONT_LEFT;
        case MA_CHANNEL_TOP_FRONT_CENTER:   return SL_SPEAKER_TOP_FRONT_CENTER;
        case MA_CHANNEL_TOP_FRONT_RIGHT:    return SL_SPEAKER_TOP_FRONT_RIGHT;
        case MA_CHANNEL_TOP_BACK_LEFT:      return SL_SPEAKER_TOP_BACK_LEFT;
        case MA_CHANNEL_TOP_BACK_CENTER:    return SL_SPEAKER_TOP_BACK_CENTER;
        case MA_CHANNEL_TOP_BACK_RIGHT:     return SL_SPEAKER_TOP_BACK_RIGHT;
        default: return 0;
    }
}

/* Converts a channel mapping to an OpenSL-style channel mask. */
static SLuint32 ma_channel_map_to_channel_mask__opensl(const ma_channel* pChannelMap, ma_uint32 channels)
{
    SLuint32 channelMask = 0;
    ma_uint32 iChannel;
    for (iChannel = 0; iChannel < channels; ++iChannel) {
        channelMask |= ma_channel_id_to_opensl(pChannelMap[iChannel]);
    }

    return channelMask;
}

/* Converts an OpenSL-style channel mask to a miniaudio channel map. */
static void ma_channel_mask_to_channel_map__opensl(SLuint32 channelMask, ma_uint32 channels, ma_channel* pChannelMap)
{
    if (channels == 1 && channelMask == 0) {
        pChannelMap[0] = MA_CHANNEL_MONO;
    } else if (channels == 2 && channelMask == 0) {
        pChannelMap[0] = MA_CHANNEL_FRONT_LEFT;
        pChannelMap[1] = MA_CHANNEL_FRONT_RIGHT;
    } else {
        if (channels == 1 && (channelMask & SL_SPEAKER_FRONT_CENTER) != 0) {
            pChannelMap[0] = MA_CHANNEL_MONO;
        } else {
            /* Just iterate over each bit. */
            ma_uint32 iChannel = 0;
            ma_uint32 iBit;
            for (iBit = 0; iBit < 32 && iChannel < channels; ++iBit) {
                SLuint32 bitValue = (channelMask & (1UL << iBit));
                if (bitValue != 0) {
                    /* The bit is set. */
                    pChannelMap[iChannel] = ma_channel_id_to_ma__opensl(bitValue);
                    iChannel += 1;
                }
            }
        }
    }
}

static SLuint32 ma_round_to_standard_sample_rate__opensl(SLuint32 samplesPerSec)
{
    if (samplesPerSec <= SL_SAMPLINGRATE_8) {
        return SL_SAMPLINGRATE_8;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_11_025) {
        return SL_SAMPLINGRATE_11_025;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_12) {
        return SL_SAMPLINGRATE_12;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_16) {
        return SL_SAMPLINGRATE_16;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_22_05) {
        return SL_SAMPLINGRATE_22_05;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_24) {
        return SL_SAMPLINGRATE_24;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_32) {
        return SL_SAMPLINGRATE_32;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_44_1) {
        return SL_SAMPLINGRATE_44_1;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_48) {
        return SL_SAMPLINGRATE_48;
    }

    /* Android doesn't support more than 48000. */
#ifndef MA_ANDROID
    if (samplesPerSec <= SL_SAMPLINGRATE_64) {
        return SL_SAMPLINGRATE_64;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_88_2) {
        return SL_SAMPLINGRATE_88_2;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_96) {
        return SL_SAMPLINGRATE_96;
    }
    if (samplesPerSec <= SL_SAMPLINGRATE_192) {
        return SL_SAMPLINGRATE_192;
    }
#endif

    return SL_SAMPLINGRATE_16;
}


static SLint32 ma_to_stream_type__opensl(ma_opensl_stream_type streamType)
{
    switch (streamType) {
        case ma_opensl_stream_type_voice:        return SL_ANDROID_STREAM_VOICE;
        case ma_opensl_stream_type_system:       return SL_ANDROID_STREAM_SYSTEM;
        case ma_opensl_stream_type_ring:         return SL_ANDROID_STREAM_RING;
        case ma_opensl_stream_type_media:        return SL_ANDROID_STREAM_MEDIA;
        case ma_opensl_stream_type_alarm:        return SL_ANDROID_STREAM_ALARM;
        case ma_opensl_stream_type_notification: return SL_ANDROID_STREAM_NOTIFICATION;
        default: break;
    }

    return SL_ANDROID_STREAM_VOICE;
}

static SLint32 ma_to_recording_preset__opensl(ma_opensl_recording_preset recordingPreset)
{
    switch (recordingPreset) {
        case ma_opensl_recording_preset_generic:             return SL_ANDROID_RECORDING_PRESET_GENERIC;
        case ma_opensl_recording_preset_camcorder:           return SL_ANDROID_RECORDING_PRESET_CAMCORDER;
        case ma_opensl_recording_preset_voice_recognition:   return SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION;
        case ma_opensl_recording_preset_voice_communication: return SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION;
        case ma_opensl_recording_preset_voice_unprocessed:   return SL_ANDROID_RECORDING_PRESET_UNPROCESSED;
        default: break;
    }

    return SL_ANDROID_RECORDING_PRESET_NONE;
}


static ma_result ma_context_enumerate_devices__opensl(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_bool32 cbResult;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    MA_ASSERT(g_maOpenSLInitCounter > 0); /* <-- If you trigger this it means you've either not initialized the context, or you've uninitialized it and then attempted to enumerate devices. */
    if (g_maOpenSLInitCounter == 0) {
        return MA_INVALID_OPERATION;
    }

    /*
    TODO: Test Me.

    This is currently untested, so for now we are just returning default devices.
    */
#if 0 && !defined(MA_ANDROID)
    ma_bool32 isTerminated = MA_FALSE;

    SLuint32 pDeviceIDs[128];
    SLint32 deviceCount = sizeof(pDeviceIDs) / sizeof(pDeviceIDs[0]);

    SLAudioIODeviceCapabilitiesItf deviceCaps;
    SLresult resultSL = (*g_maEngineObjectSL)->GetInterface(g_maEngineObjectSL, (SLInterfaceID)pContext->opensl.SL_IID_AUDIOIODEVICECAPABILITIES, &deviceCaps);
    if (resultSL != SL_RESULT_SUCCESS) {
        /* The interface may not be supported so just report a default device. */
        goto return_default_device;
    }

    /* Playback */
    if (!isTerminated) {
        resultSL = (*deviceCaps)->GetAvailableAudioOutputs(deviceCaps, &deviceCount, pDeviceIDs);
        if (resultSL != SL_RESULT_SUCCESS) {
            return ma_result_from_OpenSL(resultSL);
        }

        for (SLint32 iDevice = 0; iDevice < deviceCount; ++iDevice) {
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            deviceInfo.id.opensl = pDeviceIDs[iDevice];

            SLAudioOutputDescriptor desc;
            resultSL = (*deviceCaps)->QueryAudioOutputCapabilities(deviceCaps, deviceInfo.id.opensl, &desc);
            if (resultSL == SL_RESULT_SUCCESS) {
                ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), (const char*)desc.pDeviceName, (size_t)-1);

                ma_bool32 cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
                if (cbResult == MA_FALSE) {
                    isTerminated = MA_TRUE;
                    break;
                }
            }
        }
    }

    /* Capture */
    if (!isTerminated) {
        resultSL = (*deviceCaps)->GetAvailableAudioInputs(deviceCaps, &deviceCount, pDeviceIDs);
        if (resultSL != SL_RESULT_SUCCESS) {
            return ma_result_from_OpenSL(resultSL);
        }

        for (SLint32 iDevice = 0; iDevice < deviceCount; ++iDevice) {
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            deviceInfo.id.opensl = pDeviceIDs[iDevice];

            SLAudioInputDescriptor desc;
            resultSL = (*deviceCaps)->QueryAudioInputCapabilities(deviceCaps, deviceInfo.id.opensl, &desc);
            if (resultSL == SL_RESULT_SUCCESS) {
                ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), (const char*)desc.deviceName, (size_t)-1);

                ma_bool32 cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
                if (cbResult == MA_FALSE) {
                    isTerminated = MA_TRUE;
                    break;
                }
            }
        }
    }

    return MA_SUCCESS;
#else
    goto return_default_device;
#endif

return_default_device:;
    cbResult = MA_TRUE;

    /* Playback. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        deviceInfo.id.opensl = SL_DEFAULTDEVICEID_AUDIOOUTPUT;
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
        cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
    }

    /* Capture. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        deviceInfo.id.opensl = SL_DEFAULTDEVICEID_AUDIOINPUT;
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
        cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
    }

    return MA_SUCCESS;
}

static void ma_context_add_data_format_ex__opensl(ma_context* pContext, ma_format format, ma_uint32 channels, ma_uint32 sampleRate, ma_device_info* pDeviceInfo)
{
    MA_ASSERT(pContext    != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].format     = format;
    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].channels   = channels;
    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].sampleRate = sampleRate;
    pDeviceInfo->nativeDataFormats[pDeviceInfo->nativeDataFormatCount].flags      = 0;
    pDeviceInfo->nativeDataFormatCount += 1;
}

static void ma_context_add_data_format__opensl(ma_context* pContext, ma_format format, ma_device_info* pDeviceInfo)
{
    ma_uint32 minChannels   = 1;
    ma_uint32 maxChannels   = 2;
    ma_uint32 minSampleRate = (ma_uint32)ma_standard_sample_rate_8000;
    ma_uint32 maxSampleRate = (ma_uint32)ma_standard_sample_rate_48000;
    ma_uint32 iChannel;
    ma_uint32 iSampleRate;

    MA_ASSERT(pContext    != NULL);
    MA_ASSERT(pDeviceInfo != NULL);

    /*
    Each sample format can support mono and stereo, and we'll support a small subset of standard
    rates (up to 48000). A better solution would be to somehow find a native sample rate.
    */
    for (iChannel = minChannels; iChannel < maxChannels; iChannel += 1) {
        for (iSampleRate = 0; iSampleRate < ma_countof(g_maStandardSampleRatePriorities); iSampleRate += 1) {
            ma_uint32 standardSampleRate = g_maStandardSampleRatePriorities[iSampleRate];
            if (standardSampleRate >= minSampleRate && standardSampleRate <= maxSampleRate) {
                ma_context_add_data_format_ex__opensl(pContext, format, iChannel, standardSampleRate, pDeviceInfo);
            }
        }
    }
}

static ma_result ma_context_get_device_info__opensl(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    MA_ASSERT(pContext != NULL);

    MA_ASSERT(g_maOpenSLInitCounter > 0); /* <-- If you trigger this it means you've either not initialized the context, or you've uninitialized it and then attempted to get device info. */
    if (g_maOpenSLInitCounter == 0) {
        return MA_INVALID_OPERATION;
    }

    /*
    TODO: Test Me.

    This is currently untested, so for now we are just returning default devices.
    */
#if 0 && !defined(MA_ANDROID)
    SLAudioIODeviceCapabilitiesItf deviceCaps;
    SLresult resultSL = (*g_maEngineObjectSL)->GetInterface(g_maEngineObjectSL, (SLInterfaceID)pContext->opensl.SL_IID_AUDIOIODEVICECAPABILITIES, &deviceCaps);
    if (resultSL != SL_RESULT_SUCCESS) {
        /* The interface may not be supported so just report a default device. */
        goto return_default_device;
    }

    if (deviceType == ma_device_type_playback) {
        SLAudioOutputDescriptor desc;
        resultSL = (*deviceCaps)->QueryAudioOutputCapabilities(deviceCaps, pDeviceID->opensl, &desc);
        if (resultSL != SL_RESULT_SUCCESS) {
            return ma_result_from_OpenSL(resultSL);
        }

        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), (const char*)desc.pDeviceName, (size_t)-1);
    } else {
        SLAudioInputDescriptor desc;
        resultSL = (*deviceCaps)->QueryAudioInputCapabilities(deviceCaps, pDeviceID->opensl, &desc);
        if (resultSL != SL_RESULT_SUCCESS) {
            return ma_result_from_OpenSL(resultSL);
        }

        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), (const char*)desc.deviceName, (size_t)-1);
    }

    goto return_detailed_info;
#else
    goto return_default_device;
#endif

return_default_device:
    if (pDeviceID != NULL) {
        if ((deviceType == ma_device_type_playback && pDeviceID->opensl != SL_DEFAULTDEVICEID_AUDIOOUTPUT) ||
            (deviceType == ma_device_type_capture  && pDeviceID->opensl != SL_DEFAULTDEVICEID_AUDIOINPUT)) {
            return MA_NO_DEVICE;   /* Don't know the device. */
        }
    }

    /* ID and Name / Description */
    if (deviceType == ma_device_type_playback) {
        pDeviceInfo->id.opensl = SL_DEFAULTDEVICEID_AUDIOOUTPUT;
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
    } else {
        pDeviceInfo->id.opensl = SL_DEFAULTDEVICEID_AUDIOINPUT;
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
    }

    pDeviceInfo->isDefault = MA_TRUE;

    goto return_detailed_info;


return_detailed_info:

    /*
    For now we're just outputting a set of values that are supported by the API but not necessarily supported
    by the device natively. Later on we should work on this so that it more closely reflects the device's
    actual native format.
    */
    pDeviceInfo->nativeDataFormatCount = 0;
#if defined(MA_ANDROID) && __ANDROID_API__ >= 21
    ma_context_add_data_format__opensl(pContext, ma_format_f32, pDeviceInfo);
#endif
    ma_context_add_data_format__opensl(pContext, ma_format_s16, pDeviceInfo);
    ma_context_add_data_format__opensl(pContext, ma_format_u8,  pDeviceInfo);

    return MA_SUCCESS;
}


#ifdef MA_ANDROID
/*void ma_buffer_queue_callback_capture__opensl_android(SLAndroidSimpleBufferQueueItf pBufferQueue, SLuint32 eventFlags, const void* pBuffer, SLuint32 bufferSize, SLuint32 dataUsed, void* pContext)*/
static void ma_buffer_queue_callback_capture__opensl_android(SLAndroidSimpleBufferQueueItf pBufferQueue, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    size_t periodSizeInBytes;
    ma_uint8* pBuffer;
    SLresult resultSL;

    MA_ASSERT(pDevice != NULL);

    (void)pBufferQueue;

    /*
    For now, don't do anything unless the buffer was fully processed. From what I can tell, it looks like
    OpenSL|ES 1.1 improves on buffer queues to the point that we could much more intelligently handle this,
    but unfortunately it looks like Android is only supporting OpenSL|ES 1.0.1 for now :(
    */

    /* Don't do anything if the device is not started. */
    if (ma_device_get_state(pDevice) != ma_device_state_started) {
        return;
    }

    /* Don't do anything if the device is being drained. */
    if (pDevice->opensl.isDrainingCapture) {
        return;
    }

    periodSizeInBytes = pDevice->capture.internalPeriodSizeInFrames * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
    pBuffer = pDevice->opensl.pBufferCapture + (pDevice->opensl.currentBufferIndexCapture * periodSizeInBytes);

    ma_device_handle_backend_data_callback(pDevice, NULL, pBuffer, pDevice->capture.internalPeriodSizeInFrames);

    resultSL = MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueueCapture)->Enqueue((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueueCapture, pBuffer, periodSizeInBytes);
    if (resultSL != SL_RESULT_SUCCESS) {
        return;
    }

    pDevice->opensl.currentBufferIndexCapture = (pDevice->opensl.currentBufferIndexCapture + 1) % pDevice->capture.internalPeriods;
}

static void ma_buffer_queue_callback_playback__opensl_android(SLAndroidSimpleBufferQueueItf pBufferQueue, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    size_t periodSizeInBytes;
    ma_uint8* pBuffer;
    SLresult resultSL;

    MA_ASSERT(pDevice != NULL);

    (void)pBufferQueue;

    /* Don't do anything if the device is not started. */
    if (ma_device_get_state(pDevice) != ma_device_state_started) {
        return;
    }

    /* Don't do anything if the device is being drained. */
    if (pDevice->opensl.isDrainingPlayback) {
        return;
    }

    periodSizeInBytes = pDevice->playback.internalPeriodSizeInFrames * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
    pBuffer = pDevice->opensl.pBufferPlayback + (pDevice->opensl.currentBufferIndexPlayback * periodSizeInBytes);

    ma_device_handle_backend_data_callback(pDevice, pBuffer, NULL, pDevice->playback.internalPeriodSizeInFrames);

    resultSL = MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueuePlayback)->Enqueue((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueuePlayback, pBuffer, periodSizeInBytes);
    if (resultSL != SL_RESULT_SUCCESS) {
        return;
    }

    pDevice->opensl.currentBufferIndexPlayback = (pDevice->opensl.currentBufferIndexPlayback + 1) % pDevice->playback.internalPeriods;
}
#endif

static ma_result ma_device_uninit__opensl(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    MA_ASSERT(g_maOpenSLInitCounter > 0); /* <-- If you trigger this it means you've either not initialized the context, or you've uninitialized it before uninitializing the device. */
    if (g_maOpenSLInitCounter == 0) {
        return MA_INVALID_OPERATION;
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        if (pDevice->opensl.pAudioRecorderObj) {
            MA_OPENSL_OBJ(pDevice->opensl.pAudioRecorderObj)->Destroy((SLObjectItf)pDevice->opensl.pAudioRecorderObj);
        }

        ma_free(pDevice->opensl.pBufferCapture, &pDevice->pContext->allocationCallbacks);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        if (pDevice->opensl.pAudioPlayerObj) {
            MA_OPENSL_OBJ(pDevice->opensl.pAudioPlayerObj)->Destroy((SLObjectItf)pDevice->opensl.pAudioPlayerObj);
        }
        if (pDevice->opensl.pOutputMixObj) {
            MA_OPENSL_OBJ(pDevice->opensl.pOutputMixObj)->Destroy((SLObjectItf)pDevice->opensl.pOutputMixObj);
        }

        ma_free(pDevice->opensl.pBufferPlayback, &pDevice->pContext->allocationCallbacks);
    }

    return MA_SUCCESS;
}

#if defined(MA_ANDROID) && __ANDROID_API__ >= 21
typedef SLAndroidDataFormat_PCM_EX  ma_SLDataFormat_PCM;
#else
typedef SLDataFormat_PCM            ma_SLDataFormat_PCM;
#endif

static ma_result ma_SLDataFormat_PCM_init__opensl(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, const ma_channel* channelMap, ma_SLDataFormat_PCM* pDataFormat)
{
    /* We need to convert our format/channels/rate so that they aren't set to default. */
    if (format == ma_format_unknown) {
        format = MA_DEFAULT_FORMAT;
    }
    if (channels == 0) {
        channels = MA_DEFAULT_CHANNELS;
    }
    if (sampleRate == 0) {
        sampleRate = MA_DEFAULT_SAMPLE_RATE;
    }

#if defined(MA_ANDROID) && __ANDROID_API__ >= 21
    if (format == ma_format_f32) {
        pDataFormat->formatType     = SL_ANDROID_DATAFORMAT_PCM_EX;
        pDataFormat->representation = SL_ANDROID_PCM_REPRESENTATION_FLOAT;
    } else {
        pDataFormat->formatType = SL_DATAFORMAT_PCM;
    }
#else
    pDataFormat->formatType = SL_DATAFORMAT_PCM;
#endif

    pDataFormat->numChannels   = channels;
    ((SLDataFormat_PCM*)pDataFormat)->samplesPerSec = ma_round_to_standard_sample_rate__opensl(sampleRate * 1000);  /* In millihertz. Annoyingly, the sample rate variable is named differently between SLAndroidDataFormat_PCM_EX and SLDataFormat_PCM */
    pDataFormat->bitsPerSample = ma_get_bytes_per_sample(format) * 8;
    pDataFormat->channelMask   = ma_channel_map_to_channel_mask__opensl(channelMap, channels);
    pDataFormat->endianness    = (ma_is_little_endian()) ? SL_BYTEORDER_LITTLEENDIAN : SL_BYTEORDER_BIGENDIAN;

    /*
    Android has a few restrictions on the format as documented here: https://developer.android.com/ndk/guides/audio/opensl-for-android.html
     - Only mono and stereo is supported.
     - Only u8 and s16 formats are supported.
     - Maximum sample rate of 48000.
    */
#ifdef MA_ANDROID
    if (pDataFormat->numChannels > 2) {
        pDataFormat->numChannels = 2;
    }
#if __ANDROID_API__ >= 21
    if (pDataFormat->formatType == SL_ANDROID_DATAFORMAT_PCM_EX) {
        /* It's floating point. */
        MA_ASSERT(pDataFormat->representation == SL_ANDROID_PCM_REPRESENTATION_FLOAT);
        if (pDataFormat->bitsPerSample > 32) {
            pDataFormat->bitsPerSample = 32;
        }
    } else {
        if (pDataFormat->bitsPerSample > 16) {
            pDataFormat->bitsPerSample = 16;
        }
    }
#else
    if (pDataFormat->bitsPerSample > 16) {
        pDataFormat->bitsPerSample = 16;
    }
#endif
    if (((SLDataFormat_PCM*)pDataFormat)->samplesPerSec > SL_SAMPLINGRATE_48) {
        ((SLDataFormat_PCM*)pDataFormat)->samplesPerSec = SL_SAMPLINGRATE_48;
    }
#endif

    pDataFormat->containerSize = pDataFormat->bitsPerSample;  /* Always tightly packed for now. */

    return MA_SUCCESS;
}

static ma_result ma_deconstruct_SLDataFormat_PCM__opensl(ma_SLDataFormat_PCM* pDataFormat, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_bool32 isFloatingPoint = MA_FALSE;
#if defined(MA_ANDROID) && __ANDROID_API__ >= 21
    if (pDataFormat->formatType == SL_ANDROID_DATAFORMAT_PCM_EX) {
        MA_ASSERT(pDataFormat->representation == SL_ANDROID_PCM_REPRESENTATION_FLOAT);
        isFloatingPoint = MA_TRUE;
    }
#endif
    if (isFloatingPoint) {
        if (pDataFormat->bitsPerSample == 32) {
            *pFormat = ma_format_f32;
        }
    } else {
        if (pDataFormat->bitsPerSample == 8) {
            *pFormat = ma_format_u8;
        } else if (pDataFormat->bitsPerSample == 16) {
            *pFormat = ma_format_s16;
        } else if (pDataFormat->bitsPerSample == 24) {
            *pFormat = ma_format_s24;
        } else if (pDataFormat->bitsPerSample == 32) {
            *pFormat = ma_format_s32;
        }
    }

    *pChannels   = pDataFormat->numChannels;
    *pSampleRate = ((SLDataFormat_PCM*)pDataFormat)->samplesPerSec / 1000;
    ma_channel_mask_to_channel_map__opensl(pDataFormat->channelMask, ma_min(pDataFormat->numChannels, channelMapCap), pChannelMap);

    return MA_SUCCESS;
}

static ma_result ma_device_init__opensl(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
#ifdef MA_ANDROID
    SLDataLocator_AndroidSimpleBufferQueue queue;
    SLresult resultSL;
    size_t bufferSizeInBytes;
    SLInterfaceID itfIDs[2];
    const SLboolean itfIDsRequired[] = {
        SL_BOOLEAN_TRUE,    /* SL_IID_ANDROIDSIMPLEBUFFERQUEUE */
        SL_BOOLEAN_FALSE    /* SL_IID_ANDROIDCONFIGURATION */
    };
#endif

    MA_ASSERT(g_maOpenSLInitCounter > 0); /* <-- If you trigger this it means you've either not initialized the context, or you've uninitialized it and then attempted to initialize a new device. */
    if (g_maOpenSLInitCounter == 0) {
        return MA_INVALID_OPERATION;
    }

    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /*
    For now, only supporting Android implementations of OpenSL|ES since that's the only one I've
    been able to test with and I currently depend on Android-specific extensions (simple buffer
    queues).
    */
#ifdef MA_ANDROID
    itfIDs[0] = (SLInterfaceID)pDevice->pContext->opensl.SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
    itfIDs[1] = (SLInterfaceID)pDevice->pContext->opensl.SL_IID_ANDROIDCONFIGURATION;

    /* No exclusive mode with OpenSL|ES. */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->shareMode == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->shareMode  == ma_share_mode_exclusive)) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    /* Now we can start initializing the device properly. */
    MA_ASSERT(pDevice != NULL);
    MA_ZERO_OBJECT(&pDevice->opensl);

    queue.locatorType = SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE;

    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        ma_SLDataFormat_PCM pcm;
        SLDataLocator_IODevice locatorDevice;
        SLDataSource source;
        SLDataSink sink;
        SLAndroidConfigurationItf pRecorderConfig;

        ma_SLDataFormat_PCM_init__opensl(pDescriptorCapture->format, pDescriptorCapture->channels, pDescriptorCapture->sampleRate, pDescriptorCapture->channelMap, &pcm);

        locatorDevice.locatorType = SL_DATALOCATOR_IODEVICE;
        locatorDevice.deviceType  = SL_IODEVICE_AUDIOINPUT;
        locatorDevice.deviceID    = SL_DEFAULTDEVICEID_AUDIOINPUT;  /* Must always use the default device with Android. */
        locatorDevice.device      = NULL;

        source.pLocator = &locatorDevice;
        source.pFormat  = NULL;

        queue.numBuffers = pDescriptorCapture->periodCount;

        sink.pLocator = &queue;
        sink.pFormat  = (SLDataFormat_PCM*)&pcm;

        resultSL = (*g_maEngineSL)->CreateAudioRecorder(g_maEngineSL, (SLObjectItf*)&pDevice->opensl.pAudioRecorderObj, &source, &sink, ma_countof(itfIDs), itfIDs, itfIDsRequired);
        if (resultSL == SL_RESULT_CONTENT_UNSUPPORTED || resultSL == SL_RESULT_PARAMETER_INVALID) {
            /* Unsupported format. Fall back to something safer and try again. If this fails, just abort. */
            pcm.formatType    = SL_DATAFORMAT_PCM;
            pcm.numChannels   = 1;
            ((SLDataFormat_PCM*)&pcm)->samplesPerSec = SL_SAMPLINGRATE_16;  /* The name of the sample rate variable is different between SLAndroidDataFormat_PCM_EX and SLDataFormat_PCM. */
            pcm.bitsPerSample = 16;
            pcm.containerSize = pcm.bitsPerSample;  /* Always tightly packed for now. */
            pcm.channelMask   = 0;
            resultSL = (*g_maEngineSL)->CreateAudioRecorder(g_maEngineSL, (SLObjectItf*)&pDevice->opensl.pAudioRecorderObj, &source, &sink, ma_countof(itfIDs), itfIDs, itfIDsRequired);
        }

        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to create audio recorder.");
            return ma_result_from_OpenSL(resultSL);
        }


        /* Set the recording preset before realizing the player. */
        if (pConfig->opensl.recordingPreset != ma_opensl_recording_preset_default) {
            resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioRecorderObj)->GetInterface((SLObjectItf)pDevice->opensl.pAudioRecorderObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_ANDROIDCONFIGURATION, &pRecorderConfig);
            if (resultSL == SL_RESULT_SUCCESS) {
                SLint32 recordingPreset = ma_to_recording_preset__opensl(pConfig->opensl.recordingPreset);
                resultSL = (*pRecorderConfig)->SetConfiguration(pRecorderConfig, SL_ANDROID_KEY_RECORDING_PRESET, &recordingPreset, sizeof(SLint32));
                if (resultSL != SL_RESULT_SUCCESS) {
                    /* Failed to set the configuration. Just keep going. */
                }
            }
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioRecorderObj)->Realize((SLObjectItf)pDevice->opensl.pAudioRecorderObj, SL_BOOLEAN_FALSE);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to realize audio recorder.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioRecorderObj)->GetInterface((SLObjectItf)pDevice->opensl.pAudioRecorderObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_RECORD, &pDevice->opensl.pAudioRecorder);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to retrieve SL_IID_RECORD interface.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioRecorderObj)->GetInterface((SLObjectItf)pDevice->opensl.pAudioRecorderObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_ANDROIDSIMPLEBUFFERQUEUE, &pDevice->opensl.pBufferQueueCapture);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to retrieve SL_IID_ANDROIDSIMPLEBUFFERQUEUE interface.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueueCapture)->RegisterCallback((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueueCapture, ma_buffer_queue_callback_capture__opensl_android, pDevice);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to register buffer queue callback.");
            return ma_result_from_OpenSL(resultSL);
        }

        /* The internal format is determined by the "pcm" object. */
        ma_deconstruct_SLDataFormat_PCM__opensl(&pcm, &pDescriptorCapture->format, &pDescriptorCapture->channels, &pDescriptorCapture->sampleRate, pDescriptorCapture->channelMap, ma_countof(pDescriptorCapture->channelMap));

        /* Buffer. */
        pDescriptorCapture->periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptorCapture, pDescriptorCapture->sampleRate, pConfig->performanceProfile);
        pDevice->opensl.currentBufferIndexCapture = 0;

        bufferSizeInBytes = pDescriptorCapture->periodSizeInFrames * ma_get_bytes_per_frame(pDescriptorCapture->format, pDescriptorCapture->channels) * pDescriptorCapture->periodCount;
        pDevice->opensl.pBufferCapture = (ma_uint8*)ma_calloc(bufferSizeInBytes, &pDevice->pContext->allocationCallbacks);
        if (pDevice->opensl.pBufferCapture == NULL) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to allocate memory for data buffer.");
            return MA_OUT_OF_MEMORY;
        }
        MA_ZERO_MEMORY(pDevice->opensl.pBufferCapture, bufferSizeInBytes);
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        ma_SLDataFormat_PCM pcm;
        SLDataSource source;
        SLDataLocator_OutputMix outmixLocator;
        SLDataSink sink;
        SLAndroidConfigurationItf pPlayerConfig;

        ma_SLDataFormat_PCM_init__opensl(pDescriptorPlayback->format, pDescriptorPlayback->channels, pDescriptorPlayback->sampleRate, pDescriptorPlayback->channelMap, &pcm);

        resultSL = (*g_maEngineSL)->CreateOutputMix(g_maEngineSL, (SLObjectItf*)&pDevice->opensl.pOutputMixObj, 0, NULL, NULL);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to create output mix.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pOutputMixObj)->Realize((SLObjectItf)pDevice->opensl.pOutputMixObj, SL_BOOLEAN_FALSE);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to realize output mix object.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pOutputMixObj)->GetInterface((SLObjectItf)pDevice->opensl.pOutputMixObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_OUTPUTMIX, &pDevice->opensl.pOutputMix);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to retrieve SL_IID_OUTPUTMIX interface.");
            return ma_result_from_OpenSL(resultSL);
        }

        /* Set the output device. */
        if (pDescriptorPlayback->pDeviceID != NULL) {
            SLuint32 deviceID_OpenSL = pDescriptorPlayback->pDeviceID->opensl;
            MA_OPENSL_OUTPUTMIX(pDevice->opensl.pOutputMix)->ReRoute((SLOutputMixItf)pDevice->opensl.pOutputMix, 1, &deviceID_OpenSL);
        }

        queue.numBuffers = pDescriptorPlayback->periodCount;

        source.pLocator = &queue;
        source.pFormat  = (SLDataFormat_PCM*)&pcm;

        outmixLocator.locatorType = SL_DATALOCATOR_OUTPUTMIX;
        outmixLocator.outputMix   = (SLObjectItf)pDevice->opensl.pOutputMixObj;

        sink.pLocator = &outmixLocator;
        sink.pFormat  = NULL;

        resultSL = (*g_maEngineSL)->CreateAudioPlayer(g_maEngineSL, (SLObjectItf*)&pDevice->opensl.pAudioPlayerObj, &source, &sink, ma_countof(itfIDs), itfIDs, itfIDsRequired);
        if (resultSL == SL_RESULT_CONTENT_UNSUPPORTED || resultSL == SL_RESULT_PARAMETER_INVALID) {
            /* Unsupported format. Fall back to something safer and try again. If this fails, just abort. */
            pcm.formatType = SL_DATAFORMAT_PCM;
            pcm.numChannels = 2;
            ((SLDataFormat_PCM*)&pcm)->samplesPerSec = SL_SAMPLINGRATE_16;
            pcm.bitsPerSample = 16;
            pcm.containerSize = pcm.bitsPerSample;  /* Always tightly packed for now. */
            pcm.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
            resultSL = (*g_maEngineSL)->CreateAudioPlayer(g_maEngineSL, (SLObjectItf*)&pDevice->opensl.pAudioPlayerObj, &source, &sink, ma_countof(itfIDs), itfIDs, itfIDsRequired);
        }

        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to create audio player.");
            return ma_result_from_OpenSL(resultSL);
        }


        /* Set the stream type before realizing the player. */
        if (pConfig->opensl.streamType != ma_opensl_stream_type_default) {
            resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioPlayerObj)->GetInterface((SLObjectItf)pDevice->opensl.pAudioPlayerObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_ANDROIDCONFIGURATION, &pPlayerConfig);
            if (resultSL == SL_RESULT_SUCCESS) {
                SLint32 streamType = ma_to_stream_type__opensl(pConfig->opensl.streamType);
                resultSL = (*pPlayerConfig)->SetConfiguration(pPlayerConfig, SL_ANDROID_KEY_STREAM_TYPE, &streamType, sizeof(SLint32));
                if (resultSL != SL_RESULT_SUCCESS) {
                    /* Failed to set the configuration. Just keep going. */
                }
            }
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioPlayerObj)->Realize((SLObjectItf)pDevice->opensl.pAudioPlayerObj, SL_BOOLEAN_FALSE);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to realize audio player.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioPlayerObj)->GetInterface((SLObjectItf)pDevice->opensl.pAudioPlayerObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_PLAY, &pDevice->opensl.pAudioPlayer);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to retrieve SL_IID_PLAY interface.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_OBJ(pDevice->opensl.pAudioPlayerObj)->GetInterface((SLObjectItf)pDevice->opensl.pAudioPlayerObj, (SLInterfaceID)pDevice->pContext->opensl.SL_IID_ANDROIDSIMPLEBUFFERQUEUE, &pDevice->opensl.pBufferQueuePlayback);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to retrieve SL_IID_ANDROIDSIMPLEBUFFERQUEUE interface.");
            return ma_result_from_OpenSL(resultSL);
        }

        resultSL = MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueuePlayback)->RegisterCallback((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueuePlayback, ma_buffer_queue_callback_playback__opensl_android, pDevice);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to register buffer queue callback.");
            return ma_result_from_OpenSL(resultSL);
        }

        /* The internal format is determined by the "pcm" object. */
        ma_deconstruct_SLDataFormat_PCM__opensl(&pcm, &pDescriptorPlayback->format, &pDescriptorPlayback->channels, &pDescriptorPlayback->sampleRate, pDescriptorPlayback->channelMap, ma_countof(pDescriptorPlayback->channelMap));

        /* Buffer. */
        pDescriptorPlayback->periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_descriptor(pDescriptorPlayback, pDescriptorPlayback->sampleRate, pConfig->performanceProfile);
        pDevice->opensl.currentBufferIndexPlayback   = 0;

        bufferSizeInBytes = pDescriptorPlayback->periodSizeInFrames * ma_get_bytes_per_frame(pDescriptorPlayback->format, pDescriptorPlayback->channels) * pDescriptorPlayback->periodCount;
        pDevice->opensl.pBufferPlayback = (ma_uint8*)ma_calloc(bufferSizeInBytes, &pDevice->pContext->allocationCallbacks);
        if (pDevice->opensl.pBufferPlayback == NULL) {
            ma_device_uninit__opensl(pDevice);
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to allocate memory for data buffer.");
            return MA_OUT_OF_MEMORY;
        }
        MA_ZERO_MEMORY(pDevice->opensl.pBufferPlayback, bufferSizeInBytes);
    }

    return MA_SUCCESS;
#else
    return MA_NO_BACKEND;   /* Non-Android implementations are not supported. */
#endif
}

static ma_result ma_device_start__opensl(ma_device* pDevice)
{
    SLresult resultSL;
    size_t periodSizeInBytes;
    ma_uint32 iPeriod;

    MA_ASSERT(pDevice != NULL);

    MA_ASSERT(g_maOpenSLInitCounter > 0); /* <-- If you trigger this it means you've either not initialized the context, or you've uninitialized it and then attempted to start the device. */
    if (g_maOpenSLInitCounter == 0) {
        return MA_INVALID_OPERATION;
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        resultSL = MA_OPENSL_RECORD(pDevice->opensl.pAudioRecorder)->SetRecordState((SLRecordItf)pDevice->opensl.pAudioRecorder, SL_RECORDSTATE_RECORDING);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to start internal capture device.");
            return ma_result_from_OpenSL(resultSL);
        }

        periodSizeInBytes = pDevice->capture.internalPeriodSizeInFrames * ma_get_bytes_per_frame(pDevice->capture.internalFormat, pDevice->capture.internalChannels);
        for (iPeriod = 0; iPeriod < pDevice->capture.internalPeriods; ++iPeriod) {
            resultSL = MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueueCapture)->Enqueue((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueueCapture, pDevice->opensl.pBufferCapture + (periodSizeInBytes * iPeriod), periodSizeInBytes);
            if (resultSL != SL_RESULT_SUCCESS) {
                MA_OPENSL_RECORD(pDevice->opensl.pAudioRecorder)->SetRecordState((SLRecordItf)pDevice->opensl.pAudioRecorder, SL_RECORDSTATE_STOPPED);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to enqueue buffer for capture device.");
                return ma_result_from_OpenSL(resultSL);
            }
        }
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        resultSL = MA_OPENSL_PLAY(pDevice->opensl.pAudioPlayer)->SetPlayState((SLPlayItf)pDevice->opensl.pAudioPlayer, SL_PLAYSTATE_PLAYING);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to start internal playback device.");
            return ma_result_from_OpenSL(resultSL);
        }

        /* In playback mode (no duplex) we need to load some initial buffers. In duplex mode we need to enqueue silent buffers. */
        if (pDevice->type == ma_device_type_duplex) {
            MA_ZERO_MEMORY(pDevice->opensl.pBufferPlayback, pDevice->playback.internalPeriodSizeInFrames * pDevice->playback.internalPeriods * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels));
        } else {
            ma_device__read_frames_from_client(pDevice, pDevice->playback.internalPeriodSizeInFrames * pDevice->playback.internalPeriods, pDevice->opensl.pBufferPlayback);
        }

        periodSizeInBytes = pDevice->playback.internalPeriodSizeInFrames * ma_get_bytes_per_frame(pDevice->playback.internalFormat, pDevice->playback.internalChannels);
        for (iPeriod = 0; iPeriod < pDevice->playback.internalPeriods; ++iPeriod) {
            resultSL = MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueuePlayback)->Enqueue((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueuePlayback, pDevice->opensl.pBufferPlayback + (periodSizeInBytes * iPeriod), periodSizeInBytes);
            if (resultSL != SL_RESULT_SUCCESS) {
                MA_OPENSL_PLAY(pDevice->opensl.pAudioPlayer)->SetPlayState((SLPlayItf)pDevice->opensl.pAudioPlayer, SL_PLAYSTATE_STOPPED);
                ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to enqueue buffer for playback device.");
                return ma_result_from_OpenSL(resultSL);
            }
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_device_drain__opensl(ma_device* pDevice, ma_device_type deviceType)
{
    SLAndroidSimpleBufferQueueItf pBufferQueue;

    MA_ASSERT(deviceType == ma_device_type_capture || deviceType == ma_device_type_playback);

    if (pDevice->type == ma_device_type_capture) {
        pBufferQueue = (SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueueCapture;
        pDevice->opensl.isDrainingCapture  = MA_TRUE;
    } else {
        pBufferQueue = (SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueuePlayback;
        pDevice->opensl.isDrainingPlayback = MA_TRUE;
    }

    for (;;) {
        SLAndroidSimpleBufferQueueState state;

        MA_OPENSL_BUFFERQUEUE(pBufferQueue)->GetState(pBufferQueue, &state);
        if (state.count == 0) {
            break;
        }

        ma_sleep(10);
    }

    if (pDevice->type == ma_device_type_capture) {
        pDevice->opensl.isDrainingCapture  = MA_FALSE;
    } else {
        pDevice->opensl.isDrainingPlayback = MA_FALSE;
    }

    return MA_SUCCESS;
}

static ma_result ma_device_stop__opensl(ma_device* pDevice)
{
    SLresult resultSL;

    MA_ASSERT(pDevice != NULL);

    MA_ASSERT(g_maOpenSLInitCounter > 0); /* <-- If you trigger this it means you've either not initialized the context, or you've uninitialized it before stopping/uninitializing the device. */
    if (g_maOpenSLInitCounter == 0) {
        return MA_INVALID_OPERATION;
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex) {
        ma_device_drain__opensl(pDevice, ma_device_type_capture);

        resultSL = MA_OPENSL_RECORD(pDevice->opensl.pAudioRecorder)->SetRecordState((SLRecordItf)pDevice->opensl.pAudioRecorder, SL_RECORDSTATE_STOPPED);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to stop internal capture device.");
            return ma_result_from_OpenSL(resultSL);
        }

        MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueueCapture)->Clear((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueueCapture);
    }

    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_device_drain__opensl(pDevice, ma_device_type_playback);

        resultSL = MA_OPENSL_PLAY(pDevice->opensl.pAudioPlayer)->SetPlayState((SLPlayItf)pDevice->opensl.pAudioPlayer, SL_PLAYSTATE_STOPPED);
        if (resultSL != SL_RESULT_SUCCESS) {
            ma_log_post(ma_device_get_log(pDevice), MA_LOG_LEVEL_ERROR, "[OpenSL] Failed to stop internal playback device.");
            return ma_result_from_OpenSL(resultSL);
        }

        MA_OPENSL_BUFFERQUEUE(pDevice->opensl.pBufferQueuePlayback)->Clear((SLAndroidSimpleBufferQueueItf)pDevice->opensl.pBufferQueuePlayback);
    }

    /* Make sure the client is aware that the device has stopped. There may be an OpenSL|ES callback for this, but I haven't found it. */
    ma_device__on_notification_stopped(pDevice);

    return MA_SUCCESS;
}


static ma_result ma_context_uninit__opensl(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_opensl);
    (void)pContext;

    /* Uninit global data. */
    ma_spinlock_lock(&g_maOpenSLSpinlock);
    {
        MA_ASSERT(g_maOpenSLInitCounter > 0);   /* If you've triggered this, it means you have ma_context_init/uninit mismatch. Each successful call to ma_context_init() must be matched up with a call to ma_context_uninit(). */

        g_maOpenSLInitCounter -= 1;
        if (g_maOpenSLInitCounter == 0) {
            (*g_maEngineObjectSL)->Destroy(g_maEngineObjectSL);
        }
    }
    ma_spinlock_unlock(&g_maOpenSLSpinlock);

    return MA_SUCCESS;
}

static ma_result ma_dlsym_SLInterfaceID__opensl(ma_context* pContext, const char* pName, ma_handle* pHandle)
{
    /* We need to return an error if the symbol cannot be found. This is important because there have been reports that some symbols do not exist. */
    ma_handle* p = (ma_handle*)ma_dlsym(ma_context_get_log(pContext), pContext->opensl.libOpenSLES, pName);
    if (p == NULL) {
        ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_INFO, "[OpenSL] Cannot find symbol %s", pName);
        return MA_NO_BACKEND;
    }

    *pHandle = *p;
    return MA_SUCCESS;
}

static ma_result ma_context_init_engine_nolock__opensl(ma_context* pContext)
{
    g_maOpenSLInitCounter += 1;
    if (g_maOpenSLInitCounter == 1) {
        SLresult resultSL;

        resultSL = ((ma_slCreateEngine_proc)pContext->opensl.slCreateEngine)(&g_maEngineObjectSL, 0, NULL, 0, NULL, NULL);
        if (resultSL != SL_RESULT_SUCCESS) {
            g_maOpenSLInitCounter -= 1;
            return ma_result_from_OpenSL(resultSL);
        }

        (*g_maEngineObjectSL)->Realize(g_maEngineObjectSL, SL_BOOLEAN_FALSE);

        resultSL = (*g_maEngineObjectSL)->GetInterface(g_maEngineObjectSL, (SLInterfaceID)pContext->opensl.SL_IID_ENGINE, &g_maEngineSL);
        if (resultSL != SL_RESULT_SUCCESS) {
            (*g_maEngineObjectSL)->Destroy(g_maEngineObjectSL);
            g_maOpenSLInitCounter -= 1;
            return ma_result_from_OpenSL(resultSL);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_context_init__opensl(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    ma_result result;

#if !defined(MA_NO_RUNTIME_LINKING)
    size_t i;
    const char* libOpenSLESNames[] = {
        "libOpenSLES.so"
    };
#endif

    MA_ASSERT(pContext != NULL);

    (void)pConfig;

#if !defined(MA_NO_RUNTIME_LINKING)
    /*
    Dynamically link against libOpenSLES.so. I have now had multiple reports that SL_IID_ANDROIDSIMPLEBUFFERQUEUE cannot be found. One
    report was happening at compile time and another at runtime. To try working around this, I'm going to link to libOpenSLES at runtime
    and extract the symbols rather than reference them directly. This should, hopefully, fix these issues as the compiler won't see any
    references to the symbols and will hopefully skip the checks.
    */
    for (i = 0; i < ma_countof(libOpenSLESNames); i += 1) {
        pContext->opensl.libOpenSLES = ma_dlopen(ma_context_get_log(pContext), libOpenSLESNames[i]);
        if (pContext->opensl.libOpenSLES != NULL) {
            break;
        }
    }

    if (pContext->opensl.libOpenSLES == NULL) {
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_INFO, "[OpenSL] Could not find libOpenSLES.so");
        return MA_NO_BACKEND;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_ENGINE", &pContext->opensl.SL_IID_ENGINE);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_AUDIOIODEVICECAPABILITIES", &pContext->opensl.SL_IID_AUDIOIODEVICECAPABILITIES);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_ANDROIDSIMPLEBUFFERQUEUE", &pContext->opensl.SL_IID_ANDROIDSIMPLEBUFFERQUEUE);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_RECORD", &pContext->opensl.SL_IID_RECORD);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_PLAY", &pContext->opensl.SL_IID_PLAY);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_OUTPUTMIX", &pContext->opensl.SL_IID_OUTPUTMIX);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    result = ma_dlsym_SLInterfaceID__opensl(pContext, "SL_IID_ANDROIDCONFIGURATION", &pContext->opensl.SL_IID_ANDROIDCONFIGURATION);
    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        return result;
    }

    pContext->opensl.slCreateEngine = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->opensl.libOpenSLES, "slCreateEngine");
    if (pContext->opensl.slCreateEngine == NULL) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_INFO, "[OpenSL] Cannot find symbol slCreateEngine.");
        return MA_NO_BACKEND;
    }
#else
    pContext->opensl.SL_IID_ENGINE                    = (ma_handle)SL_IID_ENGINE;
    pContext->opensl.SL_IID_AUDIOIODEVICECAPABILITIES = (ma_handle)SL_IID_AUDIOIODEVICECAPABILITIES;
    pContext->opensl.SL_IID_ANDROIDSIMPLEBUFFERQUEUE  = (ma_handle)SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
    pContext->opensl.SL_IID_RECORD                    = (ma_handle)SL_IID_RECORD;
    pContext->opensl.SL_IID_PLAY                      = (ma_handle)SL_IID_PLAY;
    pContext->opensl.SL_IID_OUTPUTMIX                 = (ma_handle)SL_IID_OUTPUTMIX;
    pContext->opensl.SL_IID_ANDROIDCONFIGURATION      = (ma_handle)SL_IID_ANDROIDCONFIGURATION;
    pContext->opensl.slCreateEngine                   = (ma_proc)slCreateEngine;
#endif


    /* Initialize global data first if applicable. */
    ma_spinlock_lock(&g_maOpenSLSpinlock);
    {
        result = ma_context_init_engine_nolock__opensl(pContext);
    }
    ma_spinlock_unlock(&g_maOpenSLSpinlock);

    if (result != MA_SUCCESS) {
        ma_dlclose(ma_context_get_log(pContext), pContext->opensl.libOpenSLES);
        ma_log_post(ma_context_get_log(pContext), MA_LOG_LEVEL_INFO, "[OpenSL] Failed to initialize OpenSL engine.");
        return result;
    }

    pCallbacks->onContextInit             = ma_context_init__opensl;
    pCallbacks->onContextUninit           = ma_context_uninit__opensl;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__opensl;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__opensl;
    pCallbacks->onDeviceInit              = ma_device_init__opensl;
    pCallbacks->onDeviceUninit            = ma_device_uninit__opensl;
    pCallbacks->onDeviceStart             = ma_device_start__opensl;
    pCallbacks->onDeviceStop              = ma_device_stop__opensl;
    pCallbacks->onDeviceRead              = NULL;   /* Not needed because OpenSL|ES is asynchronous. */
    pCallbacks->onDeviceWrite             = NULL;   /* Not needed because OpenSL|ES is asynchronous. */
    pCallbacks->onDeviceDataLoop          = NULL;   /* Not needed because OpenSL|ES is asynchronous. */

    return MA_SUCCESS;
}
#endif  /* OpenSL|ES */


/******************************************************************************

Web Audio Backend

******************************************************************************/
#ifdef MA_HAS_WEBAUDIO
#include <emscripten/emscripten.h>

#if (__EMSCRIPTEN_major__ > 3) || (__EMSCRIPTEN_major__ == 3 && (__EMSCRIPTEN_minor__ > 1 || (__EMSCRIPTEN_minor__ == 1 && __EMSCRIPTEN_tiny__ >= 32)))
    #include <emscripten/webaudio.h>
    #define MA_SUPPORT_AUDIO_WORKLETS

    #if (__EMSCRIPTEN_major__ > 3) || (__EMSCRIPTEN_major__ == 3 && (__EMSCRIPTEN_minor__ > 1 || (__EMSCRIPTEN_minor__ == 1 && __EMSCRIPTEN_tiny__ >= 70)))
        #define MA_SUPPORT_AUDIO_WORKLETS_VARIABLE_BUFFER_SIZE
    #endif
#endif

/*
TODO: Version 0.12: Swap this logic around so that AudioWorklets are used by default. Add MA_NO_AUDIO_WORKLETS.
*/
#if defined(MA_ENABLE_AUDIO_WORKLETS) && defined(MA_SUPPORT_AUDIO_WORKLETS)
    #define MA_USE_AUDIO_WORKLETS
#endif

/* The thread stack size must be a multiple of 16. */
#ifndef MA_AUDIO_WORKLETS_THREAD_STACK_SIZE
#define MA_AUDIO_WORKLETS_THREAD_STACK_SIZE     131072
#endif

#if defined(MA_USE_AUDIO_WORKLETS)
#define MA_WEBAUDIO_LATENCY_HINT_BALANCED       "balanced"
#define MA_WEBAUDIO_LATENCY_HINT_INTERACTIVE    "interactive"
#define MA_WEBAUDIO_LATENCY_HINT_PLAYBACK       "playback"
#endif

static ma_bool32 ma_is_capture_supported__webaudio()
{
    return EM_ASM_INT({
        return (navigator.mediaDevices !== undefined && navigator.mediaDevices.getUserMedia !== undefined);
    }, 0) != 0; /* Must pass in a dummy argument for C99 compatibility. */
}

#ifdef __cplusplus
extern "C" {
#endif
void* EMSCRIPTEN_KEEPALIVE ma_malloc_emscripten(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_malloc(sz, pAllocationCallbacks);
}

void EMSCRIPTEN_KEEPALIVE ma_free_emscripten(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_free(p, pAllocationCallbacks);
}

void EMSCRIPTEN_KEEPALIVE ma_device_process_pcm_frames_capture__webaudio(ma_device* pDevice, int frameCount, float* pFrames)
{
    ma_device_handle_backend_data_callback(pDevice, NULL, pFrames, (ma_uint32)frameCount);
}

void EMSCRIPTEN_KEEPALIVE ma_device_process_pcm_frames_playback__webaudio(ma_device* pDevice, int frameCount, float* pFrames)
{
    ma_device_handle_backend_data_callback(pDevice, pFrames, NULL, (ma_uint32)frameCount);
}
#ifdef __cplusplus
}
#endif

static ma_result ma_context_enumerate_devices__webaudio(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_bool32 cbResult = MA_TRUE;

    MA_ASSERT(pContext != NULL);
    MA_ASSERT(callback != NULL);

    /* Only supporting default devices for now. */

    /* Playback. */
    if (cbResult) {
        ma_device_info deviceInfo;
        MA_ZERO_OBJECT(&deviceInfo);
        ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
        deviceInfo.isDefault = MA_TRUE;    /* Only supporting default devices. */
        cbResult = callback(pContext, ma_device_type_playback, &deviceInfo, pUserData);
    }

    /* Capture. */
    if (cbResult) {
        if (ma_is_capture_supported__webaudio()) {
            ma_device_info deviceInfo;
            MA_ZERO_OBJECT(&deviceInfo);
            ma_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
            deviceInfo.isDefault = MA_TRUE;    /* Only supporting default devices. */
            cbResult = callback(pContext, ma_device_type_capture, &deviceInfo, pUserData);
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_context_get_device_info__webaudio(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    MA_ASSERT(pContext != NULL);

    if (deviceType == ma_device_type_capture && !ma_is_capture_supported__webaudio()) {
        return MA_NO_DEVICE;
    }

    MA_ZERO_MEMORY(pDeviceInfo->id.webaudio, sizeof(pDeviceInfo->id.webaudio));

    /* Only supporting default devices for now. */
    (void)pDeviceID;
    if (deviceType == ma_device_type_playback) {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
    } else {
        ma_strncpy_s(pDeviceInfo->name, sizeof(pDeviceInfo->name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
    }

    /* Only supporting default devices. */
    pDeviceInfo->isDefault = MA_TRUE;

    /* Web Audio can support any number of channels and sample rates. It only supports f32 formats, however. */
    pDeviceInfo->nativeDataFormats[0].flags      = 0;
    pDeviceInfo->nativeDataFormats[0].format     = ma_format_unknown;
    pDeviceInfo->nativeDataFormats[0].channels   = 0; /* All channels are supported. */
    pDeviceInfo->nativeDataFormats[0].sampleRate = EM_ASM_INT({
        try {
            var temp = new (window.AudioContext || window.webkitAudioContext)();
            var sampleRate = temp.sampleRate;
            temp.close();
            return sampleRate;
        } catch(e) {
            return 0;
        }
    }, 0);  /* Must pass in a dummy argument for C99 compatibility. */

    if (pDeviceInfo->nativeDataFormats[0].sampleRate == 0) {
        return MA_NO_DEVICE;
    }

    pDeviceInfo->nativeDataFormatCount = 1;

    return MA_SUCCESS;
}

static ma_result ma_device_uninit__webaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    #if defined(MA_USE_AUDIO_WORKLETS)
    {
        EM_ASM({
            var device = window.miniaudio.get_device_by_index($0);

            if (device.streamNode !== undefined) {
                device.streamNode.disconnect();
                device.streamNode = undefined;
            }

            device.pDevice = undefined;
        }, pDevice->webaudio.deviceIndex);

        emscripten_destroy_web_audio_node(pDevice->webaudio.audioWorklet);
        emscripten_destroy_audio_context(pDevice->webaudio.audioContext);
        ma_free(pDevice->webaudio.pStackBuffer, &pDevice->pContext->allocationCallbacks);
    }
    #else
    {
        EM_ASM({
            var device = window.miniaudio.get_device_by_index($0);

            /* Make sure all nodes are disconnected and marked for collection. */
            if (device.scriptNode !== undefined) {
                device.scriptNode.onaudioprocess = function(e) {};  /* We want to reset the callback to ensure it doesn't get called after AudioContext.close() has returned. Shouldn't happen since we're disconnecting, but just to be safe... */
                device.scriptNode.disconnect();
                device.scriptNode = undefined;
            }

            if (device.streamNode !== undefined) {
                device.streamNode.disconnect();
                device.streamNode = undefined;
            }

            /*
            Stop the device. I think there is a chance the callback could get fired after calling this, hence why we want
            to clear the callback before closing.
            */
            device.webaudio.close();
            device.webaudio = undefined;
            device.pDevice = undefined;
        }, pDevice->webaudio.deviceIndex);
    }
    #endif

    /* Clean up the device on the JS side. */
    EM_ASM({
        window.miniaudio.untrack_device_by_index($0);
    }, pDevice->webaudio.deviceIndex);

    ma_free(pDevice->webaudio.pIntermediaryBuffer, &pDevice->pContext->allocationCallbacks);

    return MA_SUCCESS;
}

#if !defined(MA_USE_AUDIO_WORKLETS)
static ma_uint32 ma_calculate_period_size_in_frames_from_descriptor__webaudio(const ma_device_descriptor* pDescriptor, ma_uint32 nativeSampleRate, ma_performance_profile performanceProfile)
{
    /*
    There have been reports of the default buffer size being too small on some browsers. If we're using
    the default buffer size, we'll make sure the period size is bigger than our standard defaults.
    */
    ma_uint32 periodSizeInFrames;

    if (nativeSampleRate == 0) {
        nativeSampleRate = MA_DEFAULT_SAMPLE_RATE;
    }

    if (pDescriptor->periodSizeInFrames == 0) {
        if (pDescriptor->periodSizeInMilliseconds == 0) {
            if (performanceProfile == ma_performance_profile_low_latency) {
                periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(33, nativeSampleRate);  /* 1 frame @ 30 FPS */
            } else {
                periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(333, nativeSampleRate);
            }
        } else {
            periodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(pDescriptor->periodSizeInMilliseconds, nativeSampleRate);
        }
    } else {
        periodSizeInFrames = pDescriptor->periodSizeInFrames;
    }

    /* The size of the buffer must be a power of 2 and between 256 and 16384. */
    if (periodSizeInFrames < 256) {
        periodSizeInFrames = 256;
    } else if (periodSizeInFrames > 16384) {
        periodSizeInFrames = 16384;
    } else {
        periodSizeInFrames = ma_next_power_of_2(periodSizeInFrames);
    }

    return periodSizeInFrames;
}
#endif


#if defined(MA_USE_AUDIO_WORKLETS)
typedef struct
{
    ma_device* pDevice;
    const ma_device_config* pConfig;
    ma_device_descriptor* pDescriptorPlayback;
    ma_device_descriptor* pDescriptorCapture;
} ma_audio_worklet_thread_initialized_data;

static EM_BOOL ma_audio_worklet_process_callback__webaudio(int inputCount, const AudioSampleFrame* pInputs, int outputCount, AudioSampleFrame* pOutputs, int paramCount, const AudioParamFrame* pParams, void* pUserData)
{
    ma_device* pDevice = (ma_device*)pUserData;
    ma_uint32 frameCount;

    (void)paramCount;
    (void)pParams;

    /*
    The Emscripten documentation says that it'll always be 128 frames being passed in. Hard coding it like that feels
    like a very bad idea to me. Even if it's hard coded in the backend, the API and documentation should always refer
    to variables instead of a hard coded number. In any case, will follow along for the time being.

    Unfortunately the audio data is not interleaved so we'll need to convert it before we give the data to miniaudio
    for further processing.
    */
    if (pDevice->type == ma_device_type_playback) {
        frameCount = pDevice->playback.internalPeriodSizeInFrames;
    } else {
        frameCount = pDevice->capture.internalPeriodSizeInFrames;
    }

    if (ma_device_get_state(pDevice) != ma_device_state_started) {
        /* Fill the output buffer with zero to avoid a noise sound */
        for (int i = 0; i < outputCount; i += 1) {
            MA_ZERO_MEMORY(pOutputs[i].data, pOutputs[i].numberOfChannels * frameCount * sizeof(float));
        }

        return EM_TRUE;
    }

    if (inputCount > 0) {
        /* Input data needs to be interleaved before we hand it to the client. */
        for (ma_uint32 iChannel = 0; iChannel < pDevice->capture.internalChannels; iChannel += 1) {
            for (ma_uint32 iFrame = 0; iFrame < frameCount; iFrame += 1) {
                pDevice->webaudio.pIntermediaryBuffer[iFrame*pDevice->capture.internalChannels + iChannel] = pInputs[0].data[frameCount*iChannel + iFrame];
            }
        }

        ma_device_process_pcm_frames_capture__webaudio(pDevice, frameCount, pDevice->webaudio.pIntermediaryBuffer);
    }

    if (outputCount > 0) {
        /* If it's a capture-only device, we'll need to output silence. */
        if (pDevice->type == ma_device_type_capture) {
            MA_ZERO_MEMORY(pOutputs[0].data, frameCount * pDevice->playback.internalChannels * sizeof(float));
        } else {
            ma_device_process_pcm_frames_playback__webaudio(pDevice, frameCount, pDevice->webaudio.pIntermediaryBuffer);

            /* We've read the data from the client. Now we need to deinterleave the buffer and output to the output buffer. */
            for (ma_uint32 iChannel = 0; iChannel < pDevice->playback.internalChannels; iChannel += 1) {
                for (ma_uint32 iFrame = 0; iFrame < frameCount; iFrame += 1) {
                    pOutputs[0].data[frameCount*iChannel + iFrame] = pDevice->webaudio.pIntermediaryBuffer[iFrame*pDevice->playback.internalChannels + iChannel];
                }
            }
        }
    }

    return EM_TRUE;
}


static void ma_audio_worklet_processor_created__webaudio(EMSCRIPTEN_WEBAUDIO_T audioContext, EM_BOOL success, void* pUserData)
{
    ma_audio_worklet_thread_initialized_data* pParameters = (ma_audio_worklet_thread_initialized_data*)pUserData;
    EmscriptenAudioWorkletNodeCreateOptions audioWorkletOptions;
    int channels = 0;
    size_t intermediaryBufferSizeInFrames;
    int sampleRate;

    if (success == EM_FALSE) {
        pParameters->pDevice->webaudio.initResult = MA_ERROR;
        ma_free(pParameters, &pParameters->pDevice->pContext->allocationCallbacks);
        return;
    }

    /* The next step is to initialize the audio worklet node. */
    MA_ZERO_OBJECT(&audioWorkletOptions);

    /*
    The way channel counts work with Web Audio is confusing. As far as I can tell, there's no way to know the channel
    count from MediaStreamAudioSourceNode (what we use for capture)? The only way to have control is to configure an
    output channel count on the capture side. This is slightly confusing for capture mode because intuitively you
    wouldn't actually connect an output to an input-only node, but this is what we'll have to do in order to have
    proper control over the channel count. In the capture case, we'll have to output silence to its output node.
    */
    if (pParameters->pConfig->deviceType == ma_device_type_capture) {
        channels = (int)((pParameters->pDescriptorCapture->channels > 0) ? pParameters->pDescriptorCapture->channels : MA_DEFAULT_CHANNELS);
        audioWorkletOptions.numberOfInputs = 1;
    } else {
        channels = (int)((pParameters->pDescriptorPlayback->channels > 0) ? pParameters->pDescriptorPlayback->channels : MA_DEFAULT_CHANNELS);

        if (pParameters->pConfig->deviceType == ma_device_type_duplex) {
            audioWorkletOptions.numberOfInputs = 1;
        } else {
            audioWorkletOptions.numberOfInputs = 0;
        }
    }

    audioWorkletOptions.numberOfOutputs = 1;
    audioWorkletOptions.outputChannelCounts = &channels;


    /*
    Now that we know the channel count to use we can allocate the intermediary buffer. The
    intermediary buffer is used for interleaving and deinterleaving.
    */
    #if defined(MA_SUPPORT_AUDIO_WORKLETS_VARIABLE_BUFFER_SIZE)
    {
        intermediaryBufferSizeInFrames = (size_t)emscripten_audio_context_quantum_size(audioContext);
    }
    #else
    {
        intermediaryBufferSizeInFrames = 128;
    }
    #endif

    pParameters->pDevice->webaudio.pIntermediaryBuffer = (float*)ma_malloc(intermediaryBufferSizeInFrames * (ma_uint32)channels * sizeof(float), &pParameters->pDevice->pContext->allocationCallbacks);
    if (pParameters->pDevice->webaudio.pIntermediaryBuffer == NULL) {
        pParameters->pDevice->webaudio.initResult = MA_OUT_OF_MEMORY;
        ma_free(pParameters, &pParameters->pDevice->pContext->allocationCallbacks);
        return;
    }

    pParameters->pDevice->webaudio.audioWorklet = emscripten_create_wasm_audio_worklet_node(audioContext, "miniaudio", &audioWorkletOptions, &ma_audio_worklet_process_callback__webaudio, pParameters->pDevice);

    /* With the audio worklet initialized we can now attach it to the graph. */
    if (pParameters->pConfig->deviceType == ma_device_type_capture || pParameters->pConfig->deviceType == ma_device_type_duplex) {
        ma_result attachmentResult = (ma_result)EM_ASM_INT({
            var getUserMediaResult = 0;
            var audioWorklet = emscriptenGetAudioObject($0);
            var audioContext = emscriptenGetAudioObject($1);

            navigator.mediaDevices.getUserMedia({audio:true, video:false})
                .then(function(stream) {
                    audioContext.streamNode = audioContext.createMediaStreamSource(stream);
                    audioContext.streamNode.connect(audioWorklet);
                    audioWorklet.connect(audioContext.destination);
                    getUserMediaResult = 0;   /* 0 = MA_SUCCESS */
                })
                .catch(function(error) {
                    console.log("navigator.mediaDevices.getUserMedia Failed: " + error);
                    getUserMediaResult = -1;  /* -1 = MA_ERROR */
                });

            return getUserMediaResult;
        }, pParameters->pDevice->webaudio.audioWorklet, audioContext);

        if (attachmentResult != MA_SUCCESS) {
            ma_log_postf(ma_device_get_log(pParameters->pDevice), MA_LOG_LEVEL_ERROR, "Web Audio: Failed to connect capture node.");
            emscripten_destroy_web_audio_node(pParameters->pDevice->webaudio.audioWorklet);
            pParameters->pDevice->webaudio.initResult = attachmentResult;
            ma_free(pParameters, &pParameters->pDevice->pContext->allocationCallbacks);
            return;
        }
    }

    /* If it's playback only we can now attach the worklet node to the graph. This has already been done for the duplex case. */
    if (pParameters->pConfig->deviceType == ma_device_type_playback) {
        ma_result attachmentResult = (ma_result)EM_ASM_INT({
            var audioWorklet = emscriptenGetAudioObject($0);
            var audioContext = emscriptenGetAudioObject($1);
            audioWorklet.connect(audioContext.destination);
            return 0;   /* 0 = MA_SUCCESS */
        }, pParameters->pDevice->webaudio.audioWorklet, audioContext);

        if (attachmentResult != MA_SUCCESS) {
            ma_log_postf(ma_device_get_log(pParameters->pDevice), MA_LOG_LEVEL_ERROR, "Web Audio: Failed to connect playback node.");
            pParameters->pDevice->webaudio.initResult = attachmentResult;
            ma_free(pParameters, &pParameters->pDevice->pContext->allocationCallbacks);
            return;
        }
    }

    /* We need to update the descriptors so that they reflect the internal data format. Both capture and playback should be the same. */
    sampleRate = EM_ASM_INT({ return emscriptenGetAudioObject($0).sampleRate; }, audioContext);

    if (pParameters->pDescriptorCapture != NULL) {
        pParameters->pDescriptorCapture->format              = ma_format_f32;
        pParameters->pDescriptorCapture->channels            = (ma_uint32)channels;
        pParameters->pDescriptorCapture->sampleRate          = (ma_uint32)sampleRate;
        ma_channel_map_init_standard(ma_standard_channel_map_webaudio, pParameters->pDescriptorCapture->channelMap, ma_countof(pParameters->pDescriptorCapture->channelMap), pParameters->pDescriptorCapture->channels);
        pParameters->pDescriptorCapture->periodSizeInFrames  = intermediaryBufferSizeInFrames;
        pParameters->pDescriptorCapture->periodCount         = 1;
    }

    if (pParameters->pDescriptorPlayback != NULL) {
        pParameters->pDescriptorPlayback->format             = ma_format_f32;
        pParameters->pDescriptorPlayback->channels           = (ma_uint32)channels;
        pParameters->pDescriptorPlayback->sampleRate         = (ma_uint32)sampleRate;
        ma_channel_map_init_standard(ma_standard_channel_map_webaudio, pParameters->pDescriptorPlayback->channelMap, ma_countof(pParameters->pDescriptorPlayback->channelMap), pParameters->pDescriptorPlayback->channels);
        pParameters->pDescriptorPlayback->periodSizeInFrames = intermediaryBufferSizeInFrames;
        pParameters->pDescriptorPlayback->periodCount        = 1;
    }

    /* At this point we're done and we can return. */
    ma_log_postf(ma_device_get_log(pParameters->pDevice), MA_LOG_LEVEL_DEBUG, "AudioWorklets: Created worklet node: %d\n", pParameters->pDevice->webaudio.audioWorklet);
    pParameters->pDevice->webaudio.initResult = MA_SUCCESS;
    ma_free(pParameters, &pParameters->pDevice->pContext->allocationCallbacks);
}

static void ma_audio_worklet_thread_initialized__webaudio(EMSCRIPTEN_WEBAUDIO_T audioContext, EM_BOOL success, void* pUserData)
{
    ma_audio_worklet_thread_initialized_data* pParameters = (ma_audio_worklet_thread_initialized_data*)pUserData;
    WebAudioWorkletProcessorCreateOptions workletProcessorOptions;

    MA_ASSERT(pParameters != NULL);

    if (success == EM_FALSE) {
        pParameters->pDevice->webaudio.initResult = MA_ERROR;
        return;
    }

    MA_ZERO_OBJECT(&workletProcessorOptions);
    workletProcessorOptions.name = "miniaudio"; /* I'm not entirely sure what to call this. Does this need to be globally unique, or does it need only be unique for a given AudioContext? */

    emscripten_create_wasm_audio_worklet_processor_async(audioContext, &workletProcessorOptions, ma_audio_worklet_processor_created__webaudio, pParameters);
}
#endif

static ma_result ma_device_init__webaudio(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
    if (pConfig->deviceType == ma_device_type_loopback) {
        return MA_DEVICE_TYPE_NOT_SUPPORTED;
    }

    /* No exclusive mode with Web Audio. */
    if (((pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) && pDescriptorPlayback->shareMode == ma_share_mode_exclusive) ||
        ((pConfig->deviceType == ma_device_type_capture  || pConfig->deviceType == ma_device_type_duplex) && pDescriptorCapture->shareMode  == ma_share_mode_exclusive)) {
        return MA_SHARE_MODE_NOT_SUPPORTED;
    }

    /*
    With AudioWorklets we'll have just a single AudioContext. I'm not sure why I'm not doing this for ScriptProcessorNode so
    it might be worthwhile to look into that as well.
    */
    #if defined(MA_USE_AUDIO_WORKLETS)
    {
        EmscriptenWebAudioCreateAttributes audioContextAttributes;
        ma_audio_worklet_thread_initialized_data* pInitParameters;
        void* pStackBuffer;

        if (pConfig->performanceProfile == ma_performance_profile_conservative) {
            audioContextAttributes.latencyHint = MA_WEBAUDIO_LATENCY_HINT_PLAYBACK;
        } else {
            audioContextAttributes.latencyHint = MA_WEBAUDIO_LATENCY_HINT_INTERACTIVE;
        }

        /*
        In my testing, Firefox does not seem to capture audio data properly if the sample rate is set
        to anything other than 48K. This does not seem to be the case for other browsers. For this reason,
        if the device type is anything other than playback, we'll leave the sample rate as-is and let the
        browser pick the appropriate rate for us.
        */
        if (pConfig->deviceType == ma_device_type_playback) {
            audioContextAttributes.sampleRate = pDescriptorPlayback->sampleRate;
        } else {
            audioContextAttributes.sampleRate = 0;
        }

        /* It's not clear if this can return an error. None of the tests in the Emscripten repository check for this, so neither am I for now. */
        pDevice->webaudio.audioContext = emscripten_create_audio_context(&audioContextAttributes);

        /*
        With the context created we can now create the worklet. We can only have a single worklet per audio
        context which means we'll need to craft this appropriately to handle duplex devices correctly.
        */

        /*
        We now need to create a worker thread. This is a bit weird because we need to allocate our
        own buffer for the thread's stack. The stack needs to be aligned to 16 bytes. I'm going to
        allocate this on the heap to keep it simple.
        */
        pStackBuffer = ma_aligned_malloc(MA_AUDIO_WORKLETS_THREAD_STACK_SIZE, 16, &pDevice->pContext->allocationCallbacks);
        if (pStackBuffer == NULL) {
            emscripten_destroy_audio_context(pDevice->webaudio.audioContext);
            return MA_OUT_OF_MEMORY;
        }

        /* Our thread initialization parameters need to be allocated on the heap so they don't go out of scope. */
        pInitParameters = (ma_audio_worklet_thread_initialized_data*)ma_malloc(sizeof(*pInitParameters), &pDevice->pContext->allocationCallbacks);
        if (pInitParameters == NULL) {
            ma_free(pStackBuffer, &pDevice->pContext->allocationCallbacks);
            emscripten_destroy_audio_context(pDevice->webaudio.audioContext);
            return MA_OUT_OF_MEMORY;
        }

        pInitParameters->pDevice = pDevice;
        pInitParameters->pConfig = pConfig;
        pInitParameters->pDescriptorPlayback = pDescriptorPlayback;
        pInitParameters->pDescriptorCapture  = pDescriptorCapture;

        /*
        We need to flag the device as not yet initialized so we can wait on it later. Unfortunately all of
        the Emscripten WebAudio stuff is asynchronous.
        */
        pDevice->webaudio.initResult = MA_BUSY;
        {
            emscripten_start_wasm_audio_worklet_thread_async(pDevice->webaudio.audioContext, pStackBuffer, MA_AUDIO_WORKLETS_THREAD_STACK_SIZE, ma_audio_worklet_thread_initialized__webaudio, pInitParameters);
        }
        while (pDevice->webaudio.initResult == MA_BUSY) { emscripten_sleep(1); }    /* We must wait for initialization to complete. We're just spinning here. The emscripten_sleep() call is why we need to build with `-sASYNCIFY`. */

        /* Initialization is now complete. Descriptors were updated when the worklet was initialized. */
        if (pDevice->webaudio.initResult != MA_SUCCESS) {
            ma_free(pStackBuffer, &pDevice->pContext->allocationCallbacks);
            emscripten_destroy_audio_context(pDevice->webaudio.audioContext);
            return pDevice->webaudio.initResult;
        }

        /* We need to add an entry to the miniaudio.devices list on the JS side so we can do some JS/C interop. */
        pDevice->webaudio.deviceIndex = EM_ASM_INT({
            return window.miniaudio.track_device({
                webaudio: emscriptenGetAudioObject($0),
                state:    1, /* 1 = ma_device_state_stopped */
                pDevice: $1
            });
        }, pDevice->webaudio.audioContext, pDevice);

        return MA_SUCCESS;
    }
    #else
    {
        /* ScriptProcessorNode. This path requires us to do almost everything in JS, but we'll do as much as we can in C. */
        ma_uint32 deviceIndex;
        ma_uint32 channels;
        ma_uint32 sampleRate;
        ma_uint32 periodSizeInFrames;

        /* The channel count will depend on the device type. If it's a capture, use its, otherwise use the playback side. */
        if (pConfig->deviceType == ma_device_type_capture) {
            channels = (pDescriptorCapture->channels  > 0) ? pDescriptorCapture->channels  : MA_DEFAULT_CHANNELS;
        } else {
            channels = (pDescriptorPlayback->channels > 0) ? pDescriptorPlayback->channels : MA_DEFAULT_CHANNELS;
        }

        /*
        When testing in Firefox, I've seen it where capture mode fails if the sample rate is changed to anything other than it's
        native rate. For this reason we're leaving the sample rate untouched for capture devices.
        */
        if (pConfig->deviceType == ma_device_type_playback) {
            sampleRate = pDescriptorPlayback->sampleRate;
        } else {
            sampleRate = 0; /* Let the browser decide when capturing. */
        }

        /* The period size needs to be a power of 2. */
        if (pConfig->deviceType == ma_device_type_capture) {
            periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__webaudio(pDescriptorCapture, sampleRate, pConfig->performanceProfile);
        } else {
            periodSizeInFrames = ma_calculate_period_size_in_frames_from_descriptor__webaudio(pDescriptorPlayback, sampleRate, pConfig->performanceProfile);
        }

        /* We need an intermediary buffer for doing interleaving and deinterleaving. */
        pDevice->webaudio.pIntermediaryBuffer = (float*)ma_malloc(periodSizeInFrames * channels * sizeof(float), &pDevice->pContext->allocationCallbacks);
        if (pDevice->webaudio.pIntermediaryBuffer == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        deviceIndex = EM_ASM_INT({
            var deviceType = $0;
            var channels   = $1;
            var sampleRate = $2;
            var bufferSize = $3;
            var pIntermediaryBuffer = $4;
            var pDevice    = $5;

            if (typeof(window.miniaudio) === 'undefined') {
                return -1;  /* Context not initialized. */
            }

            var device = {};

            /* First thing we need is an AudioContext. */
            var audioContextOptions = {};
            if (deviceType == window.miniaudio.device_type.playback && sampleRate != 0) {
                audioContextOptions.sampleRate = sampleRate;
            }

            device.webaudio = new (window.AudioContext || window.webkitAudioContext)(audioContextOptions);
            device.webaudio.suspend();  /* The AudioContext must be created in a suspended state. */
            device.state = window.miniaudio.device_state.stopped;

            /*
            We need to create a ScriptProcessorNode. The channel situation is the same as the AudioWorklet path in that we
            need to specify an output and configure the channel count there.
            */
            var channelCountIn  = 0;
            var channelCountOut = channels;
            if (deviceType != window.miniaudio.device_type.playback) {
                channelCountIn  = channels;
            }

            device.scriptNode = device.webaudio.createScriptProcessor(bufferSize, channelCountIn, channelCountOut);

            /* The node processing callback. */
            device.scriptNode.onaudioprocess = function(e) {
                if (device.intermediaryBufferView == null || device.intermediaryBufferView.length == 0) {
                    device.intermediaryBufferView = new Float32Array(HEAPF32.buffer, pIntermediaryBuffer, bufferSize * channels);
                }

                /* Do the capture side first. */
                if (deviceType == window.miniaudio.device_type.capture || deviceType == window.miniaudio.device_type.duplex) {
                    /* The data must be interleaved before being processed miniaudio. */
                    for (var iChannel = 0; iChannel < channels; iChannel += 1) {
                        var inputBuffer = e.inputBuffer.getChannelData(iChannel);
                        var intermediaryBuffer = device.intermediaryBufferView;

                        for (var iFrame = 0; iFrame < bufferSize; iFrame += 1) {
                            intermediaryBuffer[iFrame*channels + iChannel] = inputBuffer[iFrame];
                        }
                    }

                    _ma_device_process_pcm_frames_capture__webaudio(pDevice, bufferSize, pIntermediaryBuffer);
                }

                if (deviceType == window.miniaudio.device_type.playback || deviceType == window.miniaudio.device_type.duplex) {
                    _ma_device_process_pcm_frames_playback__webaudio(pDevice, bufferSize, pIntermediaryBuffer);

                    for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) {
                        var outputBuffer = e.outputBuffer.getChannelData(iChannel);
                        var intermediaryBuffer = device.intermediaryBufferView;

                        for (var iFrame = 0; iFrame < bufferSize; iFrame += 1) {
                            outputBuffer[iFrame] = intermediaryBuffer[iFrame*channels + iChannel];
                        }
                    }
                } else {
                    /* It's a capture-only device. Make sure the output is silenced. */
                    for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) {
                        e.outputBuffer.getChannelData(iChannel).fill(0.0);
                    }
                }
            };

            /* Now we need to connect our node to the graph. */
            if (deviceType == window.miniaudio.device_type.capture || deviceType == window.miniaudio.device_type.duplex) {
                navigator.mediaDevices.getUserMedia({audio:true, video:false})
                    .then(function(stream) {
                        device.streamNode = device.webaudio.createMediaStreamSource(stream);
                        device.streamNode.connect(device.scriptNode);
                        device.scriptNode.connect(device.webaudio.destination);
                    })
                    .catch(function(error) {
                        console.log("Failed to get user media: " + error);
                    });
            }

            if (deviceType == window.miniaudio.device_type.playback) {
                device.scriptNode.connect(device.webaudio.destination);
            }

            device.pDevice = pDevice;

            return window.miniaudio.track_device(device);
        }, pConfig->deviceType, channels, sampleRate, periodSizeInFrames, pDevice->webaudio.pIntermediaryBuffer, pDevice);

        if (deviceIndex < 0) {
            return MA_FAILED_TO_OPEN_BACKEND_DEVICE;
        }

        pDevice->webaudio.deviceIndex = deviceIndex;

        /* Grab the sample rate from the audio context directly. */
        sampleRate = (ma_uint32)EM_ASM_INT({ return window.miniaudio.get_device_by_index($0).webaudio.sampleRate; }, deviceIndex);

        if (pDescriptorCapture != NULL) {
            pDescriptorCapture->format              = ma_format_f32;
            pDescriptorCapture->channels            = channels;
            pDescriptorCapture->sampleRate          = sampleRate;
            ma_channel_map_init_standard(ma_standard_channel_map_webaudio, pDescriptorCapture->channelMap, ma_countof(pDescriptorCapture->channelMap), pDescriptorCapture->channels);
            pDescriptorCapture->periodSizeInFrames  = periodSizeInFrames;
            pDescriptorCapture->periodCount         = 1;
        }

        if (pDescriptorPlayback != NULL) {
            pDescriptorPlayback->format             = ma_format_f32;
            pDescriptorPlayback->channels           = channels;
            pDescriptorPlayback->sampleRate         = sampleRate;
            ma_channel_map_init_standard(ma_standard_channel_map_webaudio, pDescriptorPlayback->channelMap, ma_countof(pDescriptorPlayback->channelMap), pDescriptorPlayback->channels);
            pDescriptorPlayback->periodSizeInFrames = periodSizeInFrames;
            pDescriptorPlayback->periodCount        = 1;
        }

        return MA_SUCCESS;
    }
    #endif
}

static ma_result ma_device_start__webaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    EM_ASM({
        var device = window.miniaudio.get_device_by_index($0);
        device.webaudio.resume();
        device.state = window.miniaudio.device_state.started;
    }, pDevice->webaudio.deviceIndex);

    return MA_SUCCESS;
}

static ma_result ma_device_stop__webaudio(ma_device* pDevice)
{
    MA_ASSERT(pDevice != NULL);

    /*
    From the WebAudio API documentation for AudioContext.suspend():

        Suspends the progression of AudioContext's currentTime, allows any current context processing blocks that are already processed to be played to the
        destination, and then allows the system to release its claim on audio hardware.

    I read this to mean that "any current context processing blocks" are processed by suspend() - i.e. They they are drained. We therefore shouldn't need to
    do any kind of explicit draining.
    */
    EM_ASM({
        var device = window.miniaudio.get_device_by_index($0);
        device.webaudio.suspend();
        device.state = window.miniaudio.device_state.stopped;
    }, pDevice->webaudio.deviceIndex);

    ma_device__on_notification_stopped(pDevice);

    return MA_SUCCESS;
}

static ma_result ma_context_uninit__webaudio(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);
    MA_ASSERT(pContext->backend == ma_backend_webaudio);

    (void)pContext; /* Unused. */

    /* Remove the global miniaudio object from window if there are no more references to it. */
    EM_ASM({
        if (typeof(window.miniaudio) !== 'undefined') {
            miniaudio.unlock_event_types.map(function(event_type) {
                document.removeEventListener(event_type, miniaudio.unlock, true);
            });

            window.miniaudio.referenceCount -= 1;
            if (window.miniaudio.referenceCount === 0) {
                delete window.miniaudio;
            }
        }
    });

    return MA_SUCCESS;
}

static ma_result ma_context_init__webaudio(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
    int resultFromJS;

    MA_ASSERT(pContext != NULL);

    (void)pConfig; /* Unused. */

    /* Here is where our global JavaScript object is initialized. */
    resultFromJS = EM_ASM_INT({
        if (typeof window === 'undefined' || (window.AudioContext || window.webkitAudioContext) === undefined) {
            return 0;   /* Web Audio not supported. */
        }

        if (typeof(window.miniaudio) === 'undefined') {
            window.miniaudio = {
                referenceCount: 0
            };

            /* Device types. */
            window.miniaudio.device_type = {};
            window.miniaudio.device_type.playback = $0;
            window.miniaudio.device_type.capture  = $1;
            window.miniaudio.device_type.duplex   = $2;

            /* Device states. */
            window.miniaudio.device_state = {};
            window.miniaudio.device_state.stopped = $3;
            window.miniaudio.device_state.started = $4;

            /* Device cache for mapping devices to indexes for JavaScript/C interop. */
            let miniaudio = window.miniaudio;
            miniaudio.devices = [];

            miniaudio.track_device = function(device) {
                /* Try inserting into a free slot first. */
                for (var iDevice = 0; iDevice < miniaudio.devices.length; ++iDevice) {
                    if (miniaudio.devices[iDevice] == null) {
                        miniaudio.devices[iDevice] = device;
                        return iDevice;
                    }
                }

                /* Getting here means there is no empty slots in the array so we just push to the end. */
                miniaudio.devices.push(device);
                return miniaudio.devices.length - 1;
            };

            miniaudio.untrack_device_by_index = function(deviceIndex) {
                /* We just set the device's slot to null. The slot will get reused in the next call to ma_track_device. */
                miniaudio.devices[deviceIndex] = null;

                /* Trim the array if possible. */
                while (miniaudio.devices.length > 0) {
                    if (miniaudio.devices[miniaudio.devices.length-1] == null) {
                        miniaudio.devices.pop();
                    } else {
                        break;
                    }
                }
            };

            miniaudio.untrack_device = function(device) {
                for (var iDevice = 0; iDevice < miniaudio.devices.length; ++iDevice) {
                    if (miniaudio.devices[iDevice] == device) {
                        return miniaudio.untrack_device_by_index(iDevice);
                    }
                }
            };

            miniaudio.get_device_by_index = function(deviceIndex) {
                return miniaudio.devices[deviceIndex];
            };

            miniaudio.unlock_event_types = (function(){
                return ['touchend', 'click'];
            })();

            miniaudio.unlock = function() {
                for(var i = 0; i < miniaudio.devices.length; ++i) {
                    var device = miniaudio.devices[i];
                    if (device != null &&
                        device.webaudio != null &&
                        device.state === miniaudio.device_state.started) {

                        device.webaudio.resume().then(() => {
                            _ma_device__on_notification_unlocked(device.pDevice);
                        },
                        (error) => {console.error("Failed to resume audiocontext", error);
                        });
                    }
                }
                miniaudio.unlock_event_types.map(function(event_type) {
                    document.removeEventListener(event_type, miniaudio.unlock, true);
                });
            };

            miniaudio.unlock_event_types.map(function(event_type) {
                document.addEventListener(event_type, miniaudio.unlock, true);
            });
        }

        window.miniaudio.referenceCount += 1;

        return 1;
    }, ma_device_type_playback, ma_device_type_capture, ma_device_type_duplex, ma_device_state_stopped, ma_device_state_started);

    if (resultFromJS != 1) {
        return MA_FAILED_TO_INIT_BACKEND;
    }

    pCallbacks->onContextInit             = ma_context_init__webaudio;
    pCallbacks->onContextUninit           = ma_context_uninit__webaudio;
    pCallbacks->onContextEnumerateDevices = ma_context_enumerate_devices__webaudio;
    pCallbacks->onContextGetDeviceInfo    = ma_context_get_device_info__webaudio;
    pCallbacks->onDeviceInit              = ma_device_init__webaudio;
    pCallbacks->onDeviceUninit            = ma_device_uninit__webaudio;
    pCallbacks->onDeviceStart             = ma_device_start__webaudio;
    pCallbacks->onDeviceStop              = ma_device_stop__webaudio;
    pCallbacks->onDeviceRead              = NULL;   /* Not needed because WebAudio is asynchronous. */
    pCallbacks->onDeviceWrite             = NULL;   /* Not needed because WebAudio is asynchronous. */
    pCallbacks->onDeviceDataLoop          = NULL;   /* Not needed because WebAudio is asynchronous. */

    return MA_SUCCESS;
}
#endif  /* MA_HAS_WEBAUDIO */



static ma_bool32 ma__is_channel_map_valid(const ma_channel* pChannelMap, ma_uint32 channels)
{
    /* A blank channel map should be allowed, in which case it should use an appropriate default which will depend on context. */
    if (pChannelMap != NULL && pChannelMap[0] != MA_CHANNEL_NONE) {
        ma_uint32 iChannel;

        if (channels == 0 || channels > MA_MAX_CHANNELS) {
            return MA_FALSE;   /* Channel count out of range. */
        }

        /* A channel cannot be present in the channel map more than once. */
        for (iChannel = 0; iChannel < channels; ++iChannel) {
            ma_uint32 jChannel;
            for (jChannel = iChannel + 1; jChannel < channels; ++jChannel) {
                if (pChannelMap[iChannel] == pChannelMap[jChannel]) {
                    return MA_FALSE;
                }
            }
        }
    }

    return MA_TRUE;
}


static ma_bool32 ma_context_is_backend_asynchronous(ma_context* pContext)
{
    MA_ASSERT(pContext != NULL);

    if (pContext->callbacks.onDeviceRead == NULL && pContext->callbacks.onDeviceWrite == NULL) {
        if (pContext->callbacks.onDeviceDataLoop == NULL) {
            return MA_TRUE;
        } else {
            return MA_FALSE;
        }
    } else {
        return MA_FALSE;
    }
}


static ma_result ma_device__post_init_setup(ma_device* pDevice, ma_device_type deviceType)
{
    ma_result result;

    MA_ASSERT(pDevice != NULL);

    if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex || deviceType == ma_device_type_loopback) {
        if (pDevice->capture.format == ma_format_unknown) {
            pDevice->capture.format = pDevice->capture.internalFormat;
        }
        if (pDevice->capture.channels == 0) {
            pDevice->capture.channels = pDevice->capture.internalChannels;
        }
        if (pDevice->capture.channelMap[0] == MA_CHANNEL_NONE) {
            MA_ASSERT(pDevice->capture.channels <= MA_MAX_CHANNELS);
            if (pDevice->capture.internalChannels == pDevice->capture.channels) {
                ma_channel_map_copy(pDevice->capture.channelMap, pDevice->capture.internalChannelMap, pDevice->capture.channels);
            } else {
                if (pDevice->capture.channelMixMode == ma_channel_mix_mode_simple) {
                    ma_channel_map_init_blank(pDevice->capture.channelMap, pDevice->capture.channels);
                } else {
                    ma_channel_map_init_standard(ma_standard_channel_map_default, pDevice->capture.channelMap, ma_countof(pDevice->capture.channelMap), pDevice->capture.channels);
                }
            }
        }
    }

    if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
        if (pDevice->playback.format == ma_format_unknown) {
            pDevice->playback.format = pDevice->playback.internalFormat;
        }
        if (pDevice->playback.channels == 0) {
            pDevice->playback.channels = pDevice->playback.internalChannels;
        }
        if (pDevice->playback.channelMap[0] == MA_CHANNEL_NONE) {
            MA_ASSERT(pDevice->playback.channels <= MA_MAX_CHANNELS);
            if (pDevice->playback.internalChannels == pDevice->playback.channels) {
                ma_channel_map_copy(pDevice->playback.channelMap, pDevice->playback.internalChannelMap, pDevice->playback.channels);
            } else {
                if (pDevice->playback.channelMixMode == ma_channel_mix_mode_simple) {
                    ma_channel_map_init_blank(pDevice->playback.channelMap, pDevice->playback.channels);
                } else {
                    ma_channel_map_init_standard(ma_standard_channel_map_default, pDevice->playback.channelMap, ma_countof(pDevice->playback.channelMap), pDevice->playback.channels);
                }
            }
        }
    }

    if (pDevice->sampleRate == 0) {
        if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex || deviceType == ma_device_type_loopback) {
            pDevice->sampleRate = pDevice->capture.internalSampleRate;
        } else {
            pDevice->sampleRate = pDevice->playback.internalSampleRate;
        }
    }

    /* Data converters. */
    if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex || deviceType == ma_device_type_loopback) {
        /* Converting from internal device format to client format. */
        ma_data_converter_config converterConfig = ma_data_converter_config_init_default();
        converterConfig.formatIn                        = pDevice->capture.internalFormat;
        converterConfig.channelsIn                      = pDevice->capture.internalChannels;
        converterConfig.sampleRateIn                    = pDevice->capture.internalSampleRate;
        converterConfig.pChannelMapIn                   = pDevice->capture.internalChannelMap;
        converterConfig.formatOut                       = pDevice->capture.format;
        converterConfig.channelsOut                     = pDevice->capture.channels;
        converterConfig.sampleRateOut                   = pDevice->sampleRate;
        converterConfig.pChannelMapOut                  = pDevice->capture.channelMap;
        converterConfig.channelMixMode                  = pDevice->capture.channelMixMode;
        converterConfig.calculateLFEFromSpatialChannels = pDevice->capture.calculateLFEFromSpatialChannels;
        converterConfig.allowDynamicSampleRate          = MA_FALSE;
        converterConfig.resampling.algorithm            = pDevice->resampling.algorithm;
        converterConfig.resampling.linear.lpfOrder      = pDevice->resampling.linear.lpfOrder;
        converterConfig.resampling.pBackendVTable       = pDevice->resampling.pBackendVTable;
        converterConfig.resampling.pBackendUserData     = pDevice->resampling.pBackendUserData;

        /* Make sure the old converter is uninitialized first. */
        if (ma_device_get_state(pDevice) != ma_device_state_uninitialized) {
            ma_data_converter_uninit(&pDevice->capture.converter, &pDevice->pContext->allocationCallbacks);
        }

        result = ma_data_converter_init(&converterConfig, &pDevice->pContext->allocationCallbacks, &pDevice->capture.converter);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
        /* Converting from client format to device format. */
        ma_data_converter_config converterConfig = ma_data_converter_config_init_default();
        converterConfig.formatIn                        = pDevice->playback.format;
        converterConfig.channelsIn                      = pDevice->playback.channels;
        converterConfig.sampleRateIn                    = pDevice->sampleRate;
        converterConfig.pChannelMapIn                   = pDevice->playback.channelMap;
        converterConfig.formatOut                       = pDevice->playback.internalFormat;
        converterConfig.channelsOut                     = pDevice->playback.internalChannels;
        converterConfig.sampleRateOut                   = pDevice->playback.internalSampleRate;
        converterConfig.pChannelMapOut                  = pDevice->playback.internalChannelMap;
        converterConfig.channelMixMode                  = pDevice->playback.channelMixMode;
        converterConfig.calculateLFEFromSpatialChannels = pDevice->playback.calculateLFEFromSpatialChannels;
        converterConfig.allowDynamicSampleRate          = MA_FALSE;
        converterConfig.resampling.algorithm            = pDevice->resampling.algorithm;
        converterConfig.resampling.linear.lpfOrder      = pDevice->resampling.linear.lpfOrder;
        converterConfig.resampling.pBackendVTable       = pDevice->resampling.pBackendVTable;
        converterConfig.resampling.pBackendUserData     = pDevice->resampling.pBackendUserData;

        /* Make sure the old converter is uninitialized first. */
        if (ma_device_get_state(pDevice) != ma_device_state_uninitialized) {
            ma_data_converter_uninit(&pDevice->playback.converter, &pDevice->pContext->allocationCallbacks);
        }

        result = ma_data_converter_init(&converterConfig, &pDevice->pContext->allocationCallbacks, &pDevice->playback.converter);
        if (result != MA_SUCCESS) {
            return result;
        }
    }


    /*
    If the device is doing playback (ma_device_type_playback or ma_device_type_duplex), there's
    a couple of situations where we'll need a heap allocated cache.

    The first is a duplex device for backends that use a callback for data delivery. The reason
    this is needed is that the input stage needs to have a buffer to place the input data while it
    waits for the playback stage, after which the miniaudio data callback will get fired. This is
    not needed for backends that use a blocking API because miniaudio manages temporary buffers on
    the stack to achieve this.

    The other situation is when the data converter does not have the ability to query the number
    of input frames that are required in order to process a given number of output frames. When
    performing data conversion, it's useful if miniaudio know exactly how many frames it needs
    from the client in order to generate a given number of output frames. This way, only exactly
    the number of frames are needed to be read from the client which means no cache is necessary.
    On the other hand, if miniaudio doesn't know how many frames to read, it is forced to read
    in fixed sized chunks and then cache any residual unused input frames, those of which will be
    processed at a later stage.
    */
    if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
        ma_uint64 unused;

        pDevice->playback.inputCacheConsumed  = 0;
        pDevice->playback.inputCacheRemaining = 0;

        if (pDevice->type == ma_device_type_duplex ||                                                                       /* Duplex. backend may decide to use ma_device_handle_backend_data_callback() which will require this cache. */
            ma_data_converter_get_required_input_frame_count(&pDevice->playback.converter, 1, &unused) != MA_SUCCESS)       /* Data conversion required input frame calculation not supported. */
        {
            /* We need a heap allocated cache. We want to size this based on the period size. */
            void* pNewInputCache;
            ma_uint64 newInputCacheCap;
            ma_uint64 newInputCacheSizeInBytes;

            newInputCacheCap = ma_calculate_frame_count_after_resampling(pDevice->playback.internalSampleRate, pDevice->sampleRate, pDevice->playback.internalPeriodSizeInFrames);

            newInputCacheSizeInBytes = newInputCacheCap * ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels);
            if (newInputCacheSizeInBytes > MA_SIZE_MAX) {
                ma_free(pDevice->playback.pInputCache, &pDevice->pContext->allocationCallbacks);
                pDevice->playback.pInputCache   = NULL;
                pDevice->playback.inputCacheCap = 0;
                return MA_OUT_OF_MEMORY;    /* Allocation too big. Should never hit this, but makes the cast below safer for 32-bit builds. */
            }

            pNewInputCache = ma_realloc(pDevice->playback.pInputCache, (size_t)newInputCacheSizeInBytes, &pDevice->pContext->allocationCallbacks);
            if (pNewInputCache == NULL) {
                ma_free(pDevice->playback.pInputCache, &pDevice->pContext->allocationCallbacks);
                pDevice->playback.pInputCache   = NULL;
                pDevice->playback.inputCacheCap = 0;
                return MA_OUT_OF_MEMORY;
            }

            pDevice->playback.pInputCache   = pNewInputCache;
            pDevice->playback.inputCacheCap = newInputCacheCap;
        } else {
            /* Heap allocation not required. Make sure we clear out the old cache just in case this function was called in response to a route change. */
            ma_free(pDevice->playback.pInputCache, &pDevice->pContext->allocationCallbacks);
            pDevice->playback.pInputCache   = NULL;
            pDevice->playback.inputCacheCap = 0;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_device_post_init(ma_device* pDevice, ma_device_type deviceType, const ma_device_descriptor* pDescriptorPlayback, const ma_device_descriptor* pDescriptorCapture)
{
    ma_result result;

    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Capture. */
    if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex || deviceType == ma_device_type_loopback) {
        if (ma_device_descriptor_is_valid(pDescriptorCapture) == MA_FALSE) {
            return MA_INVALID_ARGS;
        }

        pDevice->capture.internalFormat             = pDescriptorCapture->format;
        pDevice->capture.internalChannels           = pDescriptorCapture->channels;
        pDevice->capture.internalSampleRate         = pDescriptorCapture->sampleRate;
        MA_COPY_MEMORY(pDevice->capture.internalChannelMap, pDescriptorCapture->channelMap, sizeof(pDescriptorCapture->channelMap));
        pDevice->capture.internalPeriodSizeInFrames = pDescriptorCapture->periodSizeInFrames;
        pDevice->capture.internalPeriods            = pDescriptorCapture->periodCount;

        if (pDevice->capture.internalPeriodSizeInFrames == 0) {
            pDevice->capture.internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(pDescriptorCapture->periodSizeInMilliseconds, pDescriptorCapture->sampleRate);
        }
    }

    /* Playback. */
    if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
        if (ma_device_descriptor_is_valid(pDescriptorPlayback) == MA_FALSE) {
            return MA_INVALID_ARGS;
        }

        pDevice->playback.internalFormat             = pDescriptorPlayback->format;
        pDevice->playback.internalChannels           = pDescriptorPlayback->channels;
        pDevice->playback.internalSampleRate         = pDescriptorPlayback->sampleRate;
        MA_COPY_MEMORY(pDevice->playback.internalChannelMap, pDescriptorPlayback->channelMap, sizeof(pDescriptorPlayback->channelMap));
        pDevice->playback.internalPeriodSizeInFrames = pDescriptorPlayback->periodSizeInFrames;
        pDevice->playback.internalPeriods            = pDescriptorPlayback->periodCount;

        if (pDevice->playback.internalPeriodSizeInFrames == 0) {
            pDevice->playback.internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(pDescriptorPlayback->periodSizeInMilliseconds, pDescriptorPlayback->sampleRate);
        }
    }

    /*
    The name of the device can be retrieved from device info. This may be temporary and replaced with a `ma_device_get_info(pDevice, deviceType)` instead.
    For loopback devices, we need to retrieve the name of the playback device.
    */
    {
        ma_device_info deviceInfo;

        if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex || deviceType == ma_device_type_loopback) {
            result = ma_device_get_info(pDevice, ma_device_type_capture, &deviceInfo);
            if (result == MA_SUCCESS) {
                ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), deviceInfo.name, (size_t)-1);
            } else {
                /* We failed to retrieve the device info. Fall back to a default name. */
                if (pDescriptorCapture->pDeviceID == NULL) {
                    ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
                } else {
                    ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), "Capture Device", (size_t)-1);
                }
            }
        }

        if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
            result = ma_device_get_info(pDevice, ma_device_type_playback, &deviceInfo);
            if (result == MA_SUCCESS) {
                ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), deviceInfo.name, (size_t)-1);
            } else {
                /* We failed to retrieve the device info. Fall back to a default name. */
                if (pDescriptorPlayback->pDeviceID == NULL) {
                    ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
                } else {
                    ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), "Playback Device", (size_t)-1);
                }
            }
        }
    }

    /* Update data conversion. */
    return ma_device__post_init_setup(pDevice, deviceType); /* TODO: Should probably rename ma_device__post_init_setup() to something better. */
}


static ma_thread_result MA_THREADCALL ma_worker_thread(void* pData)
{
    ma_device* pDevice = (ma_device*)pData;
#ifdef MA_WIN32
    HRESULT CoInitializeResult;
#endif

    MA_ASSERT(pDevice != NULL);

#ifdef MA_WIN32
    CoInitializeResult = ma_CoInitializeEx(pDevice->pContext, NULL, MA_COINIT_VALUE);
#endif

    /*
    When the device is being initialized its initial state is set to ma_device_state_uninitialized. Before returning from
    ma_device_init(), the state needs to be set to something valid. In miniaudio the device's default state immediately
    after initialization is stopped, so therefore we need to mark the device as such. miniaudio will wait on the worker
    thread to signal an event to know when the worker thread is ready for action.
    */
    ma_device__set_state(pDevice, ma_device_state_stopped);
    ma_event_signal(&pDevice->stopEvent);

    for (;;) {  /* <-- This loop just keeps the thread alive. The main audio loop is inside. */
        ma_result startResult;
        ma_result stopResult;   /* <-- This will store the result from onDeviceStop(). If it returns an error, we don't fire the stopped notification callback. */

        /* We wait on an event to know when something has requested that the device be started and the main loop entered. */
        ma_event_wait(&pDevice->wakeupEvent);

        /* Default result code. */
        pDevice->workResult = MA_SUCCESS;

        /* If the reason for the wake up is that we are terminating, just break from the loop. */
        if (ma_device_get_state(pDevice) == ma_device_state_uninitialized) {
            break;
        }

        /*
        Getting to this point means the device is wanting to get started. The function that has requested that the device
        be started will be waiting on an event (pDevice->startEvent) which means we need to make sure we signal the event
        in both the success and error case. It's important that the state of the device is set _before_ signaling the event.
        */
        MA_ASSERT(ma_device_get_state(pDevice) == ma_device_state_starting);

        /* If the device has a start callback, start it now. */
        if (pDevice->pContext->callbacks.onDeviceStart != NULL) {
            startResult = pDevice->pContext->callbacks.onDeviceStart(pDevice);
        } else {
            startResult = MA_SUCCESS;
        }

        /*
        If starting was not successful we'll need to loop back to the start and wait for something
        to happen (pDevice->wakeupEvent).
        */
        if (startResult != MA_SUCCESS) {
            pDevice->workResult = startResult;
            ma_event_signal(&pDevice->startEvent);  /* <-- Always signal the start event so ma_device_start() can return as it'll be waiting on it. */
            continue;
        }

        /* Make sure the state is set appropriately. */
        ma_device__set_state(pDevice, ma_device_state_started); /* <-- Set this before signaling the event so that the state is always guaranteed to be good after ma_device_start() has returned. */
        ma_event_signal(&pDevice->startEvent);

        ma_device__on_notification_started(pDevice);

        if (pDevice->pContext->callbacks.onDeviceDataLoop != NULL) {
            pDevice->pContext->callbacks.onDeviceDataLoop(pDevice);
        } else {
            /* The backend is not using a custom main loop implementation, so now fall back to the blocking read-write implementation. */
            ma_device_audio_thread__default_read_write(pDevice);
        }

        /* Getting here means we have broken from the main loop which happens the application has requested that device be stopped. */
        if (pDevice->pContext->callbacks.onDeviceStop != NULL) {
            stopResult = pDevice->pContext->callbacks.onDeviceStop(pDevice);
        } else {
            stopResult = MA_SUCCESS;    /* No stop callback with the backend. Just assume successful. */
        }

        /*
        After the device has stopped, make sure an event is posted. Don't post a stopped event if
        stopping failed. This can happen on some backends when the underlying stream has been
        stopped due to the device being physically unplugged or disabled via an OS setting.
        */
        if (stopResult == MA_SUCCESS) {
            ma_device__on_notification_stopped(pDevice);
        }

        /* If we stopped because the device has been uninitialized, abort now. */
        if (ma_device_get_state(pDevice) == ma_device_state_uninitialized) {
            break;
        }

        /* A function somewhere is waiting for the device to have stopped for real so we need to signal an event to allow it to continue. */
        ma_device__set_state(pDevice, ma_device_state_stopped);
        ma_event_signal(&pDevice->stopEvent);
    }

#ifdef MA_WIN32
    if (CoInitializeResult == S_OK) {
        ma_CoUninitialize(pDevice->pContext);
    }
#endif

    return (ma_thread_result)0;
}


/* Helper for determining whether or not the given device is initialized. */
static ma_bool32 ma_device__is_initialized(ma_device* pDevice)
{
    if (pDevice == NULL) {
        return MA_FALSE;
    }

    return ma_device_get_state(pDevice) != ma_device_state_uninitialized;
}


#ifdef MA_WIN32
static ma_result ma_context_uninit_backend_apis__win32(ma_context* pContext)
{
    /* For some reason UWP complains when CoUninitialize() is called. I'm just not going to call it on UWP. */
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    if (pContext->win32.CoInitializeResult == S_OK) {
        ma_CoUninitialize(pContext);
    }

    #if defined(MA_WIN32_DESKTOP)
        ma_dlclose(ma_context_get_log(pContext), pContext->win32.hUser32DLL);
        ma_dlclose(ma_context_get_log(pContext), pContext->win32.hAdvapi32DLL);
    #endif

    ma_dlclose(ma_context_get_log(pContext), pContext->win32.hOle32DLL);
#else
    (void)pContext;
#endif

    return MA_SUCCESS;
}

static ma_result ma_context_init_backend_apis__win32(ma_context* pContext)
{
#if defined(MA_WIN32_DESKTOP) || defined(MA_WIN32_GDK)
    #if defined(MA_WIN32_DESKTOP)
        /* User32.dll */
        pContext->win32.hUser32DLL = ma_dlopen(ma_context_get_log(pContext), "user32.dll");
        if (pContext->win32.hUser32DLL == NULL) {
            return MA_FAILED_TO_INIT_BACKEND;
        }

        pContext->win32.GetForegroundWindow = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hUser32DLL, "GetForegroundWindow");
        pContext->win32.GetDesktopWindow    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hUser32DLL, "GetDesktopWindow");


        /* Advapi32.dll */
        pContext->win32.hAdvapi32DLL = ma_dlopen(ma_context_get_log(pContext), "advapi32.dll");
        if (pContext->win32.hAdvapi32DLL == NULL) {
            return MA_FAILED_TO_INIT_BACKEND;
        }

        pContext->win32.RegOpenKeyExA    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hAdvapi32DLL, "RegOpenKeyExA");
        pContext->win32.RegCloseKey      = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hAdvapi32DLL, "RegCloseKey");
        pContext->win32.RegQueryValueExA = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hAdvapi32DLL, "RegQueryValueExA");
    #endif

    /* Ole32.dll */
    pContext->win32.hOle32DLL = ma_dlopen(ma_context_get_log(pContext), "ole32.dll");
    if (pContext->win32.hOle32DLL == NULL) {
        return MA_FAILED_TO_INIT_BACKEND;
    }

    pContext->win32.CoInitialize     = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "CoInitialize");
    pContext->win32.CoInitializeEx   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "CoInitializeEx");
    pContext->win32.CoUninitialize   = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "CoUninitialize");
    pContext->win32.CoCreateInstance = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "CoCreateInstance");
    pContext->win32.CoTaskMemFree    = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "CoTaskMemFree");
    pContext->win32.PropVariantClear = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "PropVariantClear");
    pContext->win32.StringFromGUID2  = (ma_proc)ma_dlsym(ma_context_get_log(pContext), pContext->win32.hOle32DLL, "StringFromGUID2");
#else
    (void)pContext; /* Unused. */
#endif

    pContext->win32.CoInitializeResult = ma_CoInitializeEx(pContext, NULL, MA_COINIT_VALUE);
    return MA_SUCCESS;
}
#else
static ma_result ma_context_uninit_backend_apis__nix(ma_context* pContext)
{
    (void)pContext;

    return MA_SUCCESS;
}

static ma_result ma_context_init_backend_apis__nix(ma_context* pContext)
{
    (void)pContext;

    return MA_SUCCESS;
}
#endif

static ma_result ma_context_init_backend_apis(ma_context* pContext)
{
    ma_result result;
#ifdef MA_WIN32
    result = ma_context_init_backend_apis__win32(pContext);
#else
    result = ma_context_init_backend_apis__nix(pContext);
#endif

    return result;
}

static ma_result ma_context_uninit_backend_apis(ma_context* pContext)
{
    ma_result result;
#ifdef MA_WIN32
    result = ma_context_uninit_backend_apis__win32(pContext);
#else
    result = ma_context_uninit_backend_apis__nix(pContext);
#endif

    return result;
}


/* The default capacity doesn't need to be too big. */
#ifndef MA_DEFAULT_DEVICE_JOB_QUEUE_CAPACITY
#define MA_DEFAULT_DEVICE_JOB_QUEUE_CAPACITY    32
#endif

MA_API ma_device_job_thread_config ma_device_job_thread_config_init(void)
{
    ma_device_job_thread_config config;

    MA_ZERO_OBJECT(&config);
    config.noThread         = MA_FALSE;
    config.jobQueueCapacity = MA_DEFAULT_DEVICE_JOB_QUEUE_CAPACITY;
    config.jobQueueFlags    = 0;

    return config;
}


static ma_thread_result MA_THREADCALL ma_device_job_thread_entry(void* pUserData)
{
    ma_device_job_thread* pJobThread = (ma_device_job_thread*)pUserData;
    MA_ASSERT(pJobThread != NULL);

    for (;;) {
        ma_result result;
        ma_job job;

        result = ma_device_job_thread_next(pJobThread, &job);
        if (result != MA_SUCCESS) {
            break;
        }

        if (job.toc.breakup.code == MA_JOB_TYPE_QUIT) {
            break;
        }

        ma_job_process(&job);
    }

    return (ma_thread_result)0;
}

MA_API ma_result ma_device_job_thread_init(const ma_device_job_thread_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_device_job_thread* pJobThread)
{
    ma_result result;
    ma_job_queue_config jobQueueConfig;

    if (pJobThread == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pJobThread);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }


    /* Initialize the job queue before the thread to ensure it's in a valid state. */
    jobQueueConfig = ma_job_queue_config_init(pConfig->jobQueueFlags, pConfig->jobQueueCapacity);

    result = ma_job_queue_init(&jobQueueConfig, pAllocationCallbacks, &pJobThread->jobQueue);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize job queue. */
    }


    /* The thread needs to be initialized after the job queue to ensure the thread doesn't try to access it prematurely. */
    if (pConfig->noThread == MA_FALSE) {
        result = ma_thread_create(&pJobThread->thread, ma_thread_priority_normal, 0, ma_device_job_thread_entry, pJobThread, pAllocationCallbacks);
        if (result != MA_SUCCESS) {
            ma_job_queue_uninit(&pJobThread->jobQueue, pAllocationCallbacks);
            return result;  /* Failed to create the job thread. */
        }

        pJobThread->_hasThread = MA_TRUE;
    } else {
        pJobThread->_hasThread = MA_FALSE;
    }


    return MA_SUCCESS;
}

MA_API void ma_device_job_thread_uninit(ma_device_job_thread* pJobThread, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pJobThread == NULL) {
        return;
    }

    /* The first thing to do is post a quit message to the job queue. If we're using a thread we'll need to wait for it. */
    {
        ma_job job = ma_job_init(MA_JOB_TYPE_QUIT);
        ma_device_job_thread_post(pJobThread, &job);
    }

    /* Wait for the thread to terminate naturally. */
    if (pJobThread->_hasThread) {
        ma_thread_wait(&pJobThread->thread);
    }

    /* At this point the thread should be terminated so we can safely uninitialize the job queue. */
    ma_job_queue_uninit(&pJobThread->jobQueue, pAllocationCallbacks);
}

MA_API ma_result ma_device_job_thread_post(ma_device_job_thread* pJobThread, const ma_job* pJob)
{
    if (pJobThread == NULL || pJob == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_job_queue_post(&pJobThread->jobQueue, pJob);
}

MA_API ma_result ma_device_job_thread_next(ma_device_job_thread* pJobThread, ma_job* pJob)
{
    if (pJob == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pJob);

    if (pJobThread == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_job_queue_next(&pJobThread->jobQueue, pJob);
}


MA_API ma_bool32 ma_device_id_equal(const ma_device_id* pA, const ma_device_id* pB)
{
    size_t i;

    if (pA == NULL || pB == NULL) {
        return MA_FALSE;
    }

    for (i = 0; i < sizeof(ma_device_id); i += 1) {
        if (((const char*)pA)[i] != ((const char*)pB)[i]) {
            return MA_FALSE;
        }
    }

    return MA_TRUE;
}



MA_API ma_context_config ma_context_config_init(void)
{
    ma_context_config config;
    MA_ZERO_OBJECT(&config);

    return config;
}

MA_API ma_result ma_context_init(const ma_backend backends[], ma_uint32 backendCount, const ma_context_config* pConfig, ma_context* pContext)
{
    ma_result result;
    ma_context_config defaultConfig;
    ma_backend defaultBackends[ma_backend_null+1];
    ma_uint32 iBackend;
    ma_backend* pBackendsToIterate;
    ma_uint32 backendsToIterateCount;

    if (pContext == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pContext);

    /* Always make sure the config is set first to ensure properties are available as soon as possible. */
    if (pConfig == NULL) {
        defaultConfig = ma_context_config_init();
        pConfig = &defaultConfig;
    }

    /* Allocation callbacks need to come first because they'll be passed around to other areas. */
    result = ma_allocation_callbacks_init_copy(&pContext->allocationCallbacks, &pConfig->allocationCallbacks);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Get a lot set up first so we can start logging ASAP. */
    if (pConfig->pLog != NULL) {
        pContext->pLog = pConfig->pLog;
    } else {
        result = ma_log_init(&pContext->allocationCallbacks, &pContext->log);
        if (result == MA_SUCCESS) {
            pContext->pLog = &pContext->log;
        } else {
            pContext->pLog = NULL;  /* Logging is not available. */
        }
    }

    pContext->threadPriority  = pConfig->threadPriority;
    pContext->threadStackSize = pConfig->threadStackSize;
    pContext->pUserData       = pConfig->pUserData;

    /* Backend APIs need to be initialized first. This is where external libraries will be loaded and linked. */
    result = ma_context_init_backend_apis(pContext);
    if (result != MA_SUCCESS) {
        return result;
    }

    for (iBackend = 0; iBackend <= ma_backend_null; ++iBackend) {
        defaultBackends[iBackend] = (ma_backend)iBackend;
    }

    pBackendsToIterate = (ma_backend*)backends;
    backendsToIterateCount = backendCount;
    if (pBackendsToIterate == NULL) {
        pBackendsToIterate = (ma_backend*)defaultBackends;
        backendsToIterateCount = ma_countof(defaultBackends);
    }

    MA_ASSERT(pBackendsToIterate != NULL);

    for (iBackend = 0; iBackend < backendsToIterateCount; iBackend += 1) {
        ma_backend backend = pBackendsToIterate[iBackend];

        /* Make sure all callbacks are reset so we don't accidentally drag in any from previously failed initialization attempts. */
        MA_ZERO_OBJECT(&pContext->callbacks);

        /* These backends are using the new callback system. */
        switch (backend) {
        #ifdef MA_HAS_WASAPI
            case ma_backend_wasapi:
            {
                pContext->callbacks.onContextInit = ma_context_init__wasapi;
            } break;
        #endif
        #ifdef MA_HAS_DSOUND
            case ma_backend_dsound:
            {
                pContext->callbacks.onContextInit = ma_context_init__dsound;
            } break;
        #endif
        #ifdef MA_HAS_WINMM
            case ma_backend_winmm:
            {
                pContext->callbacks.onContextInit = ma_context_init__winmm;
            } break;
        #endif
        #ifdef MA_HAS_COREAUDIO
            case ma_backend_coreaudio:
            {
                pContext->callbacks.onContextInit = ma_context_init__coreaudio;
            } break;
        #endif
        #ifdef MA_HAS_SNDIO
            case ma_backend_sndio:
            {
                pContext->callbacks.onContextInit = ma_context_init__sndio;
            } break;
        #endif
        #ifdef MA_HAS_AUDIO4
            case ma_backend_audio4:
            {
                pContext->callbacks.onContextInit = ma_context_init__audio4;
            } break;
        #endif
        #ifdef MA_HAS_OSS
            case ma_backend_oss:
            {
                pContext->callbacks.onContextInit = ma_context_init__oss;
            } break;
        #endif
        #ifdef MA_HAS_PULSEAUDIO
            case ma_backend_pulseaudio:
            {
                pContext->callbacks.onContextInit = ma_context_init__pulse;
            } break;
        #endif
        #ifdef MA_HAS_ALSA
            case ma_backend_alsa:
            {
                pContext->callbacks.onContextInit = ma_context_init__alsa;
            } break;
        #endif
        #ifdef MA_HAS_JACK
            case ma_backend_jack:
            {
                pContext->callbacks.onContextInit = ma_context_init__jack;
            } break;
        #endif
        #ifdef MA_HAS_AAUDIO
            case ma_backend_aaudio:
            {
                if (ma_is_backend_enabled(backend)) {
                    pContext->callbacks.onContextInit = ma_context_init__aaudio;
                }
            } break;
        #endif
        #ifdef MA_HAS_OPENSL
            case ma_backend_opensl:
            {
                if (ma_is_backend_enabled(backend)) {
                    pContext->callbacks.onContextInit = ma_context_init__opensl;
                }
            } break;
        #endif
        #ifdef MA_HAS_WEBAUDIO
            case ma_backend_webaudio:
            {
                pContext->callbacks.onContextInit = ma_context_init__webaudio;
            } break;
        #endif
        #ifdef MA_HAS_CUSTOM
            case ma_backend_custom:
            {
                /* Slightly different logic for custom backends. Custom backends can optionally set all of their callbacks in the config. */
                pContext->callbacks = pConfig->custom;
            } break;
        #endif
        #ifdef MA_HAS_NULL
            case ma_backend_null:
            {
                pContext->callbacks.onContextInit = ma_context_init__null;
            } break;
        #endif

            default: break;
        }

        if (pContext->callbacks.onContextInit != NULL) {
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "Attempting to initialize %s backend...\n", ma_get_backend_name(backend));
            result = pContext->callbacks.onContextInit(pContext, pConfig, &pContext->callbacks);
        } else {
            /* Getting here means the onContextInit callback is not set which means the backend is not enabled. Special case for the custom backend. */
            if (backend != ma_backend_custom) {
                result = MA_BACKEND_NOT_ENABLED;
            } else {
            #if !defined(MA_HAS_CUSTOM)
                result = MA_BACKEND_NOT_ENABLED;
            #else
                result = MA_NO_BACKEND;
            #endif
            }
        }

        /* If this iteration was successful, return. */
        if (result == MA_SUCCESS) {
            result = ma_mutex_init(&pContext->deviceEnumLock);
            if (result != MA_SUCCESS) {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "Failed to initialize mutex for device enumeration. ma_context_get_devices() is not thread safe.\n");
            }

            result = ma_mutex_init(&pContext->deviceInfoLock);
            if (result != MA_SUCCESS) {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_WARNING, "Failed to initialize mutex for device info retrieval. ma_context_get_device_info() is not thread safe.\n");
            }

            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "System Architecture:\n");
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "  Endian: %s\n", ma_is_little_endian() ? "LE"  : "BE");
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "  SSE2:   %s\n", ma_has_sse2()         ? "YES" : "NO");
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "  AVX2:   %s\n", ma_has_avx2()         ? "YES" : "NO");
            ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "  NEON:   %s\n", ma_has_neon()         ? "YES" : "NO");

            pContext->backend = backend;
            return result;
        } else {
            if (result == MA_BACKEND_NOT_ENABLED) {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "%s backend is disabled.\n", ma_get_backend_name(backend));
            } else {
                ma_log_postf(ma_context_get_log(pContext), MA_LOG_LEVEL_DEBUG, "Failed to initialize %s backend.\n", ma_get_backend_name(backend));
            }
        }
    }

    /* If we get here it means an error occurred. */
    MA_ZERO_OBJECT(pContext);  /* Safety. */
    return MA_NO_BACKEND;
}

MA_API ma_result ma_context_uninit(ma_context* pContext)
{
    if (pContext == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pContext->callbacks.onContextUninit != NULL) {
        pContext->callbacks.onContextUninit(pContext);
    }

    ma_mutex_uninit(&pContext->deviceEnumLock);
    ma_mutex_uninit(&pContext->deviceInfoLock);
    ma_free(pContext->pDeviceInfos, &pContext->allocationCallbacks);
    ma_context_uninit_backend_apis(pContext);

    if (pContext->pLog == &pContext->log) {
        ma_log_uninit(&pContext->log);
    }

    return MA_SUCCESS;
}

MA_API size_t ma_context_sizeof(void)
{
    return sizeof(ma_context);
}


MA_API ma_log* ma_context_get_log(ma_context* pContext)
{
    if (pContext == NULL) {
        return NULL;
    }

    return pContext->pLog;
}


MA_API ma_result ma_context_enumerate_devices(ma_context* pContext, ma_enum_devices_callback_proc callback, void* pUserData)
{
    ma_result result;

    if (pContext == NULL || callback == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pContext->callbacks.onContextEnumerateDevices == NULL) {
        return MA_INVALID_OPERATION;
    }

    ma_mutex_lock(&pContext->deviceEnumLock);
    {
        result = pContext->callbacks.onContextEnumerateDevices(pContext, callback, pUserData);
    }
    ma_mutex_unlock(&pContext->deviceEnumLock);

    return result;
}


static ma_bool32 ma_context_get_devices__enum_callback(ma_context* pContext, ma_device_type deviceType, const ma_device_info* pInfo, void* pUserData)
{
    /*
    We need to insert the device info into our main internal buffer. Where it goes depends on the device type. If it's a capture device
    it's just appended to the end. If it's a playback device it's inserted just before the first capture device.
    */

    /*
    First make sure we have room. Since the number of devices we add to the list is usually relatively small I've decided to use a
    simple fixed size increment for buffer expansion.
    */
    const ma_uint32 bufferExpansionCount = 2;
    const ma_uint32 totalDeviceInfoCount = pContext->playbackDeviceInfoCount + pContext->captureDeviceInfoCount;

    if (totalDeviceInfoCount >= pContext->deviceInfoCapacity) {
        ma_uint32 newCapacity = pContext->deviceInfoCapacity + bufferExpansionCount;
        ma_device_info* pNewInfos = (ma_device_info*)ma_realloc(pContext->pDeviceInfos, sizeof(*pContext->pDeviceInfos)*newCapacity, &pContext->allocationCallbacks);
        if (pNewInfos == NULL) {
            return MA_FALSE;   /* Out of memory. */
        }

        pContext->pDeviceInfos = pNewInfos;
        pContext->deviceInfoCapacity = newCapacity;
    }

    if (deviceType == ma_device_type_playback) {
        /* Playback. Insert just before the first capture device. */

        /* The first thing to do is move all of the capture devices down a slot. */
        ma_uint32 iFirstCaptureDevice = pContext->playbackDeviceInfoCount;
        size_t iCaptureDevice;
        for (iCaptureDevice = totalDeviceInfoCount; iCaptureDevice > iFirstCaptureDevice; --iCaptureDevice) {
            pContext->pDeviceInfos[iCaptureDevice] = pContext->pDeviceInfos[iCaptureDevice-1];
        }

        /* Now just insert where the first capture device was before moving it down a slot. */
        pContext->pDeviceInfos[iFirstCaptureDevice] = *pInfo;
        pContext->playbackDeviceInfoCount += 1;
    } else {
        /* Capture. Insert at the end. */
        pContext->pDeviceInfos[totalDeviceInfoCount] = *pInfo;
        pContext->captureDeviceInfoCount += 1;
    }

    (void)pUserData;
    return MA_TRUE;
}

MA_API ma_result ma_context_get_devices(ma_context* pContext, ma_device_info** ppPlaybackDeviceInfos, ma_uint32* pPlaybackDeviceCount, ma_device_info** ppCaptureDeviceInfos, ma_uint32* pCaptureDeviceCount)
{
    ma_result result;

    /* Safety. */
    if (ppPlaybackDeviceInfos != NULL) *ppPlaybackDeviceInfos = NULL;
    if (pPlaybackDeviceCount  != NULL) *pPlaybackDeviceCount  = 0;
    if (ppCaptureDeviceInfos  != NULL) *ppCaptureDeviceInfos  = NULL;
    if (pCaptureDeviceCount   != NULL) *pCaptureDeviceCount   = 0;

    if (pContext == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pContext->callbacks.onContextEnumerateDevices == NULL) {
        return MA_INVALID_OPERATION;
    }

    /* Note that we don't use ma_context_enumerate_devices() here because we want to do locking at a higher level. */
    ma_mutex_lock(&pContext->deviceEnumLock);
    {
        /* Reset everything first. */
        pContext->playbackDeviceInfoCount = 0;
        pContext->captureDeviceInfoCount = 0;

        /* Now enumerate over available devices. */
        result = pContext->callbacks.onContextEnumerateDevices(pContext, ma_context_get_devices__enum_callback, NULL);
        if (result == MA_SUCCESS) {
            /* Playback devices. */
            if (ppPlaybackDeviceInfos != NULL) {
                *ppPlaybackDeviceInfos = pContext->pDeviceInfos;
            }
            if (pPlaybackDeviceCount != NULL) {
                *pPlaybackDeviceCount = pContext->playbackDeviceInfoCount;
            }

            /* Capture devices. */
            if (ppCaptureDeviceInfos != NULL) {
                *ppCaptureDeviceInfos = pContext->pDeviceInfos;
                /* Capture devices come after playback devices. */
                if (pContext->playbackDeviceInfoCount > 0) {
                    /* Conditional, because NULL+0 is undefined behavior. */
                    *ppCaptureDeviceInfos += pContext->playbackDeviceInfoCount;
                }
            }
            if (pCaptureDeviceCount != NULL) {
                *pCaptureDeviceCount = pContext->captureDeviceInfoCount;
            }
        }
    }
    ma_mutex_unlock(&pContext->deviceEnumLock);

    return result;
}

MA_API ma_result ma_context_get_device_info(ma_context* pContext, ma_device_type deviceType, const ma_device_id* pDeviceID, ma_device_info* pDeviceInfo)
{
    ma_result result;
    ma_device_info deviceInfo;

    /* NOTE: Do not clear pDeviceInfo on entry. The reason is the pDeviceID may actually point to pDeviceInfo->id which will break things. */
    if (pContext == NULL || pDeviceInfo == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(&deviceInfo);

    /* Help the backend out by copying over the device ID if we have one. */
    if (pDeviceID != NULL) {
        MA_COPY_MEMORY(&deviceInfo.id, pDeviceID, sizeof(*pDeviceID));
    }

    if (pContext->callbacks.onContextGetDeviceInfo == NULL) {
        return MA_INVALID_OPERATION;
    }

    ma_mutex_lock(&pContext->deviceInfoLock);
    {
        result = pContext->callbacks.onContextGetDeviceInfo(pContext, deviceType, pDeviceID, &deviceInfo);
    }
    ma_mutex_unlock(&pContext->deviceInfoLock);

    *pDeviceInfo = deviceInfo;
    return result;
}

MA_API ma_bool32 ma_context_is_loopback_supported(ma_context* pContext)
{
    if (pContext == NULL) {
        return MA_FALSE;
    }

    return ma_is_loopback_supported(pContext->backend);
}


MA_API ma_device_config ma_device_config_init(ma_device_type deviceType)
{
    ma_device_config config;
    MA_ZERO_OBJECT(&config);
    config.deviceType = deviceType;
    config.resampling = ma_resampler_config_init(ma_format_unknown, 0, 0, 0, ma_resample_algorithm_linear); /* Format/channels/rate don't matter here. */

    return config;
}

MA_API ma_result ma_device_init(ma_context* pContext, const ma_device_config* pConfig, ma_device* pDevice)
{
    ma_result result;
    ma_device_descriptor descriptorPlayback;
    ma_device_descriptor descriptorCapture;

    /* The context can be null, in which case we self-manage it. */
    if (pContext == NULL) {
        return ma_device_init_ex(NULL, 0, NULL, pConfig, pDevice);
    }

    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDevice);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Check that we have our callbacks defined. */
    if (pContext->callbacks.onDeviceInit == NULL) {
        return MA_INVALID_OPERATION;
    }

    /* Basic config validation. */
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
        if (pConfig->capture.channels > MA_MAX_CHANNELS) {
            return MA_INVALID_ARGS;
        }

        if (!ma__is_channel_map_valid(pConfig->capture.pChannelMap, pConfig->capture.channels)) {
            return MA_INVALID_ARGS;
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex || pConfig->deviceType == ma_device_type_loopback) {
        if (pConfig->playback.channels > MA_MAX_CHANNELS) {
            return MA_INVALID_ARGS;
        }

        if (!ma__is_channel_map_valid(pConfig->playback.pChannelMap, pConfig->playback.channels)) {
            return MA_INVALID_ARGS;
        }
    }

    pDevice->pContext = pContext;

    /* Set the user data and log callback ASAP to ensure it is available for the entire initialization process. */
    pDevice->pUserData      = pConfig->pUserData;
    pDevice->onData         = pConfig->dataCallback;
    pDevice->onNotification = pConfig->notificationCallback;
    pDevice->onStop         = pConfig->stopCallback;

    if (pConfig->playback.pDeviceID != NULL) {
        MA_COPY_MEMORY(&pDevice->playback.id, pConfig->playback.pDeviceID, sizeof(pDevice->playback.id));
        pDevice->playback.pID = &pDevice->playback.id;
    } else {
        pDevice->playback.pID = NULL;
    }

    if (pConfig->capture.pDeviceID != NULL) {
        MA_COPY_MEMORY(&pDevice->capture.id, pConfig->capture.pDeviceID, sizeof(pDevice->capture.id));
        pDevice->capture.pID = &pDevice->capture.id;
    } else {
        pDevice->capture.pID = NULL;
    }

    pDevice->noPreSilencedOutputBuffer   = pConfig->noPreSilencedOutputBuffer;
    pDevice->noClip                      = pConfig->noClip;
    pDevice->noDisableDenormals          = pConfig->noDisableDenormals;
    pDevice->noFixedSizedCallback        = pConfig->noFixedSizedCallback;
    ma_atomic_float_set(&pDevice->masterVolumeFactor, 1);

    pDevice->type                        = pConfig->deviceType;
    pDevice->sampleRate                  = pConfig->sampleRate;
    pDevice->resampling.algorithm        = pConfig->resampling.algorithm;
    pDevice->resampling.linear.lpfOrder  = pConfig->resampling.linear.lpfOrder;
    pDevice->resampling.pBackendVTable   = pConfig->resampling.pBackendVTable;
    pDevice->resampling.pBackendUserData = pConfig->resampling.pBackendUserData;

    pDevice->capture.shareMode           = pConfig->capture.shareMode;
    pDevice->capture.format              = pConfig->capture.format;
    pDevice->capture.channels            = pConfig->capture.channels;
    ma_channel_map_copy_or_default(pDevice->capture.channelMap, ma_countof(pDevice->capture.channelMap), pConfig->capture.pChannelMap, pConfig->capture.channels);
    pDevice->capture.channelMixMode      = pConfig->capture.channelMixMode;
    pDevice->capture.calculateLFEFromSpatialChannels = pConfig->capture.calculateLFEFromSpatialChannels;

    pDevice->playback.shareMode          = pConfig->playback.shareMode;
    pDevice->playback.format             = pConfig->playback.format;
    pDevice->playback.channels           = pConfig->playback.channels;
    ma_channel_map_copy_or_default(pDevice->playback.channelMap, ma_countof(pDevice->playback.channelMap), pConfig->playback.pChannelMap, pConfig->playback.channels);
    pDevice->playback.channelMixMode     = pConfig->playback.channelMixMode;
    pDevice->playback.calculateLFEFromSpatialChannels = pConfig->playback.calculateLFEFromSpatialChannels;

    result = ma_mutex_init(&pDevice->startStopLock);
    if (result != MA_SUCCESS) {
        return result;
    }

    /*
    When the device is started, the worker thread is the one that does the actual startup of the backend device. We
    use a semaphore to wait for the background thread to finish the work. The same applies for stopping the device.

    Each of these semaphores is released internally by the worker thread when the work is completed. The start
    semaphore is also used to wake up the worker thread.
    */
    result = ma_event_init(&pDevice->wakeupEvent);
    if (result != MA_SUCCESS) {
        ma_mutex_uninit(&pDevice->startStopLock);
        return result;
    }

    result = ma_event_init(&pDevice->startEvent);
    if (result != MA_SUCCESS) {
        ma_event_uninit(&pDevice->wakeupEvent);
        ma_mutex_uninit(&pDevice->startStopLock);
        return result;
    }

    result = ma_event_init(&pDevice->stopEvent);
    if (result != MA_SUCCESS) {
        ma_event_uninit(&pDevice->startEvent);
        ma_event_uninit(&pDevice->wakeupEvent);
        ma_mutex_uninit(&pDevice->startStopLock);
        return result;
    }


    MA_ZERO_OBJECT(&descriptorPlayback);
    descriptorPlayback.pDeviceID                = pConfig->playback.pDeviceID;
    descriptorPlayback.shareMode                = pConfig->playback.shareMode;
    descriptorPlayback.format                   = pConfig->playback.format;
    descriptorPlayback.channels                 = pConfig->playback.channels;
    descriptorPlayback.sampleRate               = pConfig->sampleRate;
    ma_channel_map_copy_or_default(descriptorPlayback.channelMap, ma_countof(descriptorPlayback.channelMap), pConfig->playback.pChannelMap, pConfig->playback.channels);
    descriptorPlayback.periodSizeInFrames       = pConfig->periodSizeInFrames;
    descriptorPlayback.periodSizeInMilliseconds = pConfig->periodSizeInMilliseconds;
    descriptorPlayback.periodCount              = pConfig->periods;

    if (descriptorPlayback.periodCount == 0) {
        descriptorPlayback.periodCount = MA_DEFAULT_PERIODS;
    }


    MA_ZERO_OBJECT(&descriptorCapture);
    descriptorCapture.pDeviceID                 = pConfig->capture.pDeviceID;
    descriptorCapture.shareMode                 = pConfig->capture.shareMode;
    descriptorCapture.format                    = pConfig->capture.format;
    descriptorCapture.channels                  = pConfig->capture.channels;
    descriptorCapture.sampleRate                = pConfig->sampleRate;
    ma_channel_map_copy_or_default(descriptorCapture.channelMap, ma_countof(descriptorCapture.channelMap), pConfig->capture.pChannelMap, pConfig->capture.channels);
    descriptorCapture.periodSizeInFrames        = pConfig->periodSizeInFrames;
    descriptorCapture.periodSizeInMilliseconds  = pConfig->periodSizeInMilliseconds;
    descriptorCapture.periodCount               = pConfig->periods;

    if (descriptorCapture.periodCount == 0) {
        descriptorCapture.periodCount = MA_DEFAULT_PERIODS;
    }


    result = pContext->callbacks.onDeviceInit(pDevice, pConfig, &descriptorPlayback, &descriptorCapture);
    if (result != MA_SUCCESS) {
        ma_event_uninit(&pDevice->startEvent);
        ma_event_uninit(&pDevice->wakeupEvent);
        ma_mutex_uninit(&pDevice->startStopLock);
        return result;
    }

#if 0
    /*
    On output the descriptors will contain the *actual* data format of the device. We need this to know how to convert the data between
    the requested format and the internal format.
    */
    if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex || pConfig->deviceType == ma_device_type_loopback) {
        if (!ma_device_descriptor_is_valid(&descriptorCapture)) {
            ma_device_uninit(pDevice);
            return MA_INVALID_ARGS;
        }

        pDevice->capture.internalFormat             = descriptorCapture.format;
        pDevice->capture.internalChannels           = descriptorCapture.channels;
        pDevice->capture.internalSampleRate         = descriptorCapture.sampleRate;
        ma_channel_map_copy(pDevice->capture.internalChannelMap, descriptorCapture.channelMap, descriptorCapture.channels);
        pDevice->capture.internalPeriodSizeInFrames = descriptorCapture.periodSizeInFrames;
        pDevice->capture.internalPeriods            = descriptorCapture.periodCount;

        if (pDevice->capture.internalPeriodSizeInFrames == 0) {
            pDevice->capture.internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(descriptorCapture.periodSizeInMilliseconds, descriptorCapture.sampleRate);
        }
    }

    if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
        if (!ma_device_descriptor_is_valid(&descriptorPlayback)) {
            ma_device_uninit(pDevice);
            return MA_INVALID_ARGS;
        }

        pDevice->playback.internalFormat             = descriptorPlayback.format;
        pDevice->playback.internalChannels           = descriptorPlayback.channels;
        pDevice->playback.internalSampleRate         = descriptorPlayback.sampleRate;
        ma_channel_map_copy(pDevice->playback.internalChannelMap, descriptorPlayback.channelMap, descriptorPlayback.channels);
        pDevice->playback.internalPeriodSizeInFrames = descriptorPlayback.periodSizeInFrames;
        pDevice->playback.internalPeriods            = descriptorPlayback.periodCount;

        if (pDevice->playback.internalPeriodSizeInFrames == 0) {
            pDevice->playback.internalPeriodSizeInFrames = ma_calculate_buffer_size_in_frames_from_milliseconds(descriptorPlayback.periodSizeInMilliseconds, descriptorPlayback.sampleRate);
        }
    }


    /*
    The name of the device can be retrieved from device info. This may be temporary and replaced with a `ma_device_get_info(pDevice, deviceType)` instead.
    For loopback devices, we need to retrieve the name of the playback device.
    */
    {
        ma_device_info deviceInfo;

        if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex || pConfig->deviceType == ma_device_type_loopback) {
            result = ma_device_get_info(pDevice, (pConfig->deviceType == ma_device_type_loopback) ? ma_device_type_playback : ma_device_type_capture, &deviceInfo);
            if (result == MA_SUCCESS) {
                ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), deviceInfo.name, (size_t)-1);
            } else {
                /* We failed to retrieve the device info. Fall back to a default name. */
                if (descriptorCapture.pDeviceID == NULL) {
                    ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), MA_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
                } else {
                    ma_strncpy_s(pDevice->capture.name, sizeof(pDevice->capture.name), "Capture Device", (size_t)-1);
                }
            }
        }

        if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
            result = ma_device_get_info(pDevice, ma_device_type_playback, &deviceInfo);
            if (result == MA_SUCCESS) {
                ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), deviceInfo.name, (size_t)-1);
            } else {
                /* We failed to retrieve the device info. Fall back to a default name. */
                if (descriptorPlayback.pDeviceID == NULL) {
                    ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), MA_DEFAULT_PLAYBACK_DEVICE_NAME, (size_t)-1);
                } else {
                    ma_strncpy_s(pDevice->playback.name, sizeof(pDevice->playback.name), "Playback Device", (size_t)-1);
                }
            }
        }
    }


    ma_device__post_init_setup(pDevice, pConfig->deviceType);
#endif

    result = ma_device_post_init(pDevice, pConfig->deviceType, &descriptorPlayback, &descriptorCapture);
    if (result != MA_SUCCESS) {
        ma_device_uninit(pDevice);
        return result;
    }


    /*
    If we're using fixed sized callbacks we'll need to make use of an intermediary buffer. Needs to
    be done after post_init_setup() because we'll need access to the sample rate.
    */
    if (pConfig->noFixedSizedCallback == MA_FALSE) {
        /* We're using a fixed sized data callback so we'll need an intermediary buffer. */
        ma_uint32 intermediaryBufferCap = pConfig->periodSizeInFrames;
        if (intermediaryBufferCap == 0) {
            intermediaryBufferCap = ma_calculate_buffer_size_in_frames_from_milliseconds(pConfig->periodSizeInMilliseconds, pDevice->sampleRate);
        }

        if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex || pConfig->deviceType == ma_device_type_loopback) {
            ma_uint32 intermediaryBufferSizeInBytes;

            pDevice->capture.intermediaryBufferLen = 0;
            pDevice->capture.intermediaryBufferCap = intermediaryBufferCap;
            if (pDevice->capture.intermediaryBufferCap == 0) {
                pDevice->capture.intermediaryBufferCap = pDevice->capture.internalPeriodSizeInFrames;
            }

            intermediaryBufferSizeInBytes = pDevice->capture.intermediaryBufferCap * ma_get_bytes_per_frame(pDevice->capture.format, pDevice->capture.channels);

            pDevice->capture.pIntermediaryBuffer = ma_malloc((size_t)intermediaryBufferSizeInBytes, &pContext->allocationCallbacks);
            if (pDevice->capture.pIntermediaryBuffer == NULL) {
                ma_device_uninit(pDevice);
                return MA_OUT_OF_MEMORY;
            }

            /* Silence the buffer for safety. */
            ma_silence_pcm_frames(pDevice->capture.pIntermediaryBuffer, pDevice->capture.intermediaryBufferCap, pDevice->capture.format, pDevice->capture.channels);
            pDevice->capture.intermediaryBufferLen = pDevice->capture.intermediaryBufferCap;
        }

        if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
            ma_uint64 intermediaryBufferSizeInBytes;

            pDevice->playback.intermediaryBufferLen = 0;
            if (pConfig->deviceType == ma_device_type_duplex) {
                pDevice->playback.intermediaryBufferCap = pDevice->capture.intermediaryBufferCap;   /* In duplex mode, make sure the intermediary buffer is always the same size as the capture side. */
            } else {
                pDevice->playback.intermediaryBufferCap = intermediaryBufferCap;
                if (pDevice->playback.intermediaryBufferCap == 0) {
                    pDevice->playback.intermediaryBufferCap = pDevice->playback.internalPeriodSizeInFrames;
                }
            }

            intermediaryBufferSizeInBytes = pDevice->playback.intermediaryBufferCap * ma_get_bytes_per_frame(pDevice->playback.format, pDevice->playback.channels);

            pDevice->playback.pIntermediaryBuffer = ma_malloc((size_t)intermediaryBufferSizeInBytes, &pContext->allocationCallbacks);
            if (pDevice->playback.pIntermediaryBuffer == NULL) {
                ma_device_uninit(pDevice);
                return MA_OUT_OF_MEMORY;
            }

            /* Silence the buffer for safety. */
            ma_silence_pcm_frames(pDevice->playback.pIntermediaryBuffer, pDevice->playback.intermediaryBufferCap, pDevice->playback.format, pDevice->playback.channels);
            pDevice->playback.intermediaryBufferLen = 0;
        }
    } else {
        /* Not using a fixed sized data callback so no need for an intermediary buffer. */
    }


    /* Some backends don't require the worker thread. */
    if (!ma_context_is_backend_asynchronous(pContext)) {
        /* The worker thread. */
        result = ma_thread_create(&pDevice->thread, pContext->threadPriority, pContext->threadStackSize, ma_worker_thread, pDevice, &pContext->allocationCallbacks);
        if (result != MA_SUCCESS) {
            ma_device_uninit(pDevice);
            return result;
        }

        /* Wait for the worker thread to put the device into its stopped state for real. */
        ma_event_wait(&pDevice->stopEvent);
        MA_ASSERT(ma_device_get_state(pDevice) == ma_device_state_stopped);
    } else {
        /*
        If the backend is asynchronous and the device is duplex, we'll need an intermediary ring buffer. Note that this needs to be done
        after ma_device__post_init_setup().
        */
        if (ma_context_is_backend_asynchronous(pContext)) {
            if (pConfig->deviceType == ma_device_type_duplex) {
                result = ma_duplex_rb_init(pDevice->capture.format, pDevice->capture.channels, pDevice->sampleRate, pDevice->capture.internalSampleRate, pDevice->capture.internalPeriodSizeInFrames, &pDevice->pContext->allocationCallbacks, &pDevice->duplexRB);
                if (result != MA_SUCCESS) {
                    ma_device_uninit(pDevice);
                    return result;
                }
            }
        }

        ma_device__set_state(pDevice, ma_device_state_stopped);
    }

    /* Log device information. */
    {
        ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "[%s]\n", ma_get_backend_name(pDevice->pContext->backend));
        if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex || pDevice->type == ma_device_type_loopback) {
            char name[MA_MAX_DEVICE_NAME_LENGTH + 1];
            ma_device_get_name(pDevice, ma_device_type_capture, name, sizeof(name), NULL);

            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "  %s (%s)\n", name, "Capture");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Format:      %s -> %s\n", ma_get_format_name(pDevice->capture.internalFormat), ma_get_format_name(pDevice->capture.format));
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Channels:    %d -> %d\n", pDevice->capture.internalChannels, pDevice->capture.channels);
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Sample Rate: %d -> %d\n", pDevice->capture.internalSampleRate, pDevice->sampleRate);
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Buffer Size: %d*%d (%d)\n", pDevice->capture.internalPeriodSizeInFrames, pDevice->capture.internalPeriods, (pDevice->capture.internalPeriodSizeInFrames * pDevice->capture.internalPeriods));
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Conversion:\n");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Pre Format Conversion:  %s\n", pDevice->capture.converter.hasPreFormatConversion  ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Post Format Conversion: %s\n", pDevice->capture.converter.hasPostFormatConversion ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Channel Routing:        %s\n", pDevice->capture.converter.hasChannelConverter     ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Resampling:             %s\n", pDevice->capture.converter.hasResampler            ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Passthrough:            %s\n", pDevice->capture.converter.isPassthrough           ? "YES" : "NO");
            {
                char channelMapStr[1024];
                ma_channel_map_to_string(pDevice->capture.internalChannelMap, pDevice->capture.internalChannels, channelMapStr, sizeof(channelMapStr));
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Channel Map In:         {%s}\n", channelMapStr);

                ma_channel_map_to_string(pDevice->capture.channelMap, pDevice->capture.channels, channelMapStr, sizeof(channelMapStr));
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Channel Map Out:        {%s}\n", channelMapStr);
            }
        }
        if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
            char name[MA_MAX_DEVICE_NAME_LENGTH + 1];
            ma_device_get_name(pDevice, ma_device_type_playback, name, sizeof(name), NULL);

            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "  %s (%s)\n", name, "Playback");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Format:      %s -> %s\n", ma_get_format_name(pDevice->playback.format), ma_get_format_name(pDevice->playback.internalFormat));
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Channels:    %d -> %d\n", pDevice->playback.channels, pDevice->playback.internalChannels);
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Sample Rate: %d -> %d\n", pDevice->sampleRate, pDevice->playback.internalSampleRate);
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Buffer Size: %d*%d (%d)\n", pDevice->playback.internalPeriodSizeInFrames, pDevice->playback.internalPeriods, (pDevice->playback.internalPeriodSizeInFrames * pDevice->playback.internalPeriods));
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "    Conversion:\n");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Pre Format Conversion:  %s\n", pDevice->playback.converter.hasPreFormatConversion  ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Post Format Conversion: %s\n", pDevice->playback.converter.hasPostFormatConversion ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Channel Routing:        %s\n", pDevice->playback.converter.hasChannelConverter     ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Resampling:             %s\n", pDevice->playback.converter.hasResampler            ? "YES" : "NO");
            ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Passthrough:            %s\n", pDevice->playback.converter.isPassthrough           ? "YES" : "NO");
            {
                char channelMapStr[1024];
                ma_channel_map_to_string(pDevice->playback.channelMap, pDevice->playback.channels, channelMapStr, sizeof(channelMapStr));
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Channel Map In:         {%s}\n", channelMapStr);

                ma_channel_map_to_string(pDevice->playback.internalChannelMap, pDevice->playback.internalChannels, channelMapStr, sizeof(channelMapStr));
                ma_log_postf(ma_device_get_log(pDevice), MA_LOG_LEVEL_INFO, "      Channel Map Out:        {%s}\n", channelMapStr);
            }
        }
    }

    MA_ASSERT(ma_device_get_state(pDevice) == ma_device_state_stopped);
    return MA_SUCCESS;
}

MA_API ma_result ma_device_init_ex(const ma_backend backends[], ma_uint32 backendCount, const ma_context_config* pContextConfig, const ma_device_config* pConfig, ma_device* pDevice)
{
    ma_result result;
    ma_context* pContext;
    ma_backend defaultBackends[ma_backend_null+1];
    ma_uint32 iBackend;
    ma_backend* pBackendsToIterate;
    ma_uint32 backendsToIterateCount;
    ma_allocation_callbacks allocationCallbacks;

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pContextConfig != NULL) {
        result = ma_allocation_callbacks_init_copy(&allocationCallbacks, &pContextConfig->allocationCallbacks);
        if (result != MA_SUCCESS) {
            return result;
        }
    } else {
        allocationCallbacks = ma_allocation_callbacks_init_default();
    }

    pContext = (ma_context*)ma_malloc(sizeof(*pContext), &allocationCallbacks);
    if (pContext == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    for (iBackend = 0; iBackend <= ma_backend_null; ++iBackend) {
        defaultBackends[iBackend] = (ma_backend)iBackend;
    }

    pBackendsToIterate = (ma_backend*)backends;
    backendsToIterateCount = backendCount;
    if (pBackendsToIterate == NULL) {
        pBackendsToIterate = (ma_backend*)defaultBackends;
        backendsToIterateCount = ma_countof(defaultBackends);
    }

    result = MA_NO_BACKEND;

    for (iBackend = 0; iBackend < backendsToIterateCount; ++iBackend) {
        /*
        This is a hack for iOS. If the context config is null, there's a good chance the
        `ma_device_init(NULL, &deviceConfig, pDevice);` pattern is being used. In this
        case, set the session category based on the device type.
        */
    #if defined(MA_APPLE_MOBILE)
        ma_context_config contextConfig;

        if (pContextConfig == NULL) {
            contextConfig = ma_context_config_init();
            switch (pConfig->deviceType) {
                case ma_device_type_duplex: {
                    contextConfig.coreaudio.sessionCategory = ma_ios_session_category_play_and_record;
                } break;
                case ma_device_type_capture: {
                    contextConfig.coreaudio.sessionCategory = ma_ios_session_category_record;
                } break;
                case ma_device_type_playback:
                default: {
                    contextConfig.coreaudio.sessionCategory = ma_ios_session_category_playback;
                } break;
            }

            pContextConfig = &contextConfig;
        }
    #endif

        result = ma_context_init(&pBackendsToIterate[iBackend], 1, pContextConfig, pContext);
        if (result == MA_SUCCESS) {
            result = ma_device_init(pContext, pConfig, pDevice);
            if (result == MA_SUCCESS) {
                break;  /* Success. */
            } else {
                ma_context_uninit(pContext);   /* Failure. */
            }
        }
    }

    if (result != MA_SUCCESS) {
        ma_free(pContext, &allocationCallbacks);
        return result;
    }

    pDevice->isOwnerOfContext = MA_TRUE;
    return result;
}

MA_API void ma_device_uninit(ma_device* pDevice)
{
    if (!ma_device__is_initialized(pDevice)) {
        return;
    }

    /*
    It's possible for the miniaudio side of the device and the backend to not be in sync due to
    system-level situations such as the computer being put into sleep mode and the backend not
    notifying miniaudio of the fact the device has stopped. It's possible for this to result in a
    deadlock due to miniaudio thinking the device is in a running state, when in fact it's not
    running at all. For this reason I am no longer explicitly stopping the device. I don't think
    this should affect anyone in practice since uninitializing the backend will naturally stop the
    device anyway.
    */
    #if 0
    {
        /* Make sure the device is stopped first. The backends will probably handle this naturally, but I like to do it explicitly for my own sanity. */
        if (ma_device_is_started(pDevice)) {
            ma_device_stop(pDevice);
        }
    }
    #endif

    /* Putting the device into an uninitialized state will make the worker thread return. */
    ma_device__set_state(pDevice, ma_device_state_uninitialized);

    /* Wake up the worker thread and wait for it to properly terminate. */
    if (!ma_context_is_backend_asynchronous(pDevice->pContext)) {
        ma_event_signal(&pDevice->wakeupEvent);
        ma_thread_wait(&pDevice->thread);
    }

    if (pDevice->pContext->callbacks.onDeviceUninit != NULL) {
        pDevice->pContext->callbacks.onDeviceUninit(pDevice);
    }


    ma_event_uninit(&pDevice->stopEvent);
    ma_event_uninit(&pDevice->startEvent);
    ma_event_uninit(&pDevice->wakeupEvent);
    ma_mutex_uninit(&pDevice->startStopLock);

    if (ma_context_is_backend_asynchronous(pDevice->pContext)) {
        if (pDevice->type == ma_device_type_duplex) {
            ma_duplex_rb_uninit(&pDevice->duplexRB);
        }
    }

    if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_duplex || pDevice->type == ma_device_type_loopback) {
        ma_data_converter_uninit(&pDevice->capture.converter, &pDevice->pContext->allocationCallbacks);
    }
    if (pDevice->type == ma_device_type_playback || pDevice->type == ma_device_type_duplex) {
        ma_data_converter_uninit(&pDevice->playback.converter, &pDevice->pContext->allocationCallbacks);
    }

    if (pDevice->playback.pInputCache != NULL) {
        ma_free(pDevice->playback.pInputCache, &pDevice->pContext->allocationCallbacks);
    }

    if (pDevice->capture.pIntermediaryBuffer != NULL) {
        ma_free(pDevice->capture.pIntermediaryBuffer, &pDevice->pContext->allocationCallbacks);
    }
    if (pDevice->playback.pIntermediaryBuffer != NULL) {
        ma_free(pDevice->playback.pIntermediaryBuffer, &pDevice->pContext->allocationCallbacks);
    }

    if (pDevice->isOwnerOfContext) {
        ma_allocation_callbacks allocationCallbacks = pDevice->pContext->allocationCallbacks;

        ma_context_uninit(pDevice->pContext);
        ma_free(pDevice->pContext, &allocationCallbacks);
    }

    MA_ZERO_OBJECT(pDevice);
}

MA_API ma_context* ma_device_get_context(ma_device* pDevice)
{
    if (pDevice == NULL) {
        return NULL;
    }

    return pDevice->pContext;
}

MA_API ma_log* ma_device_get_log(ma_device* pDevice)
{
    return ma_context_get_log(ma_device_get_context(pDevice));
}

MA_API ma_result ma_device_get_info(ma_device* pDevice, ma_device_type type, ma_device_info* pDeviceInfo)
{
    if (pDeviceInfo == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDeviceInfo);

    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    /* If the onDeviceGetInfo() callback is set, use that. Otherwise we'll fall back to ma_context_get_device_info(). */
    if (pDevice->pContext->callbacks.onDeviceGetInfo != NULL) {
        return pDevice->pContext->callbacks.onDeviceGetInfo(pDevice, type, pDeviceInfo);
    }

    /* Getting here means onDeviceGetInfo is not implemented so we need to fall back to an alternative. */
    if (type == ma_device_type_playback) {
        return ma_context_get_device_info(pDevice->pContext, type, pDevice->playback.pID, pDeviceInfo);
    } else {
        /*
        Here we're getting the capture side, which is the branch we'll be entering for a loopback
        device, since loopback is capturing. However, if the device is using the default device ID,
        it won't get the correct information because it'll think we're asking for the default
        capture device, where in fact for loopback we want the default *playback* device. We'll do
        a bit of a hack here to make sure we get the correct info.
        */
        if (pDevice->type == ma_device_type_loopback && pDevice->capture.pID == NULL) {
            type = ma_device_type_playback;
        }

        return ma_context_get_device_info(pDevice->pContext, type, pDevice->capture.pID, pDeviceInfo);
    }
}

MA_API ma_result ma_device_get_name(ma_device* pDevice, ma_device_type type, char* pName, size_t nameCap, size_t* pLengthNotIncludingNullTerminator)
{
    ma_result result;
    ma_device_info deviceInfo;

    if (pLengthNotIncludingNullTerminator != NULL) {
        *pLengthNotIncludingNullTerminator = 0;
    }

    if (pName != NULL && nameCap > 0) {
        pName[0] = '\0';
    }

    result = ma_device_get_info(pDevice, type, &deviceInfo);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pName != NULL) {
        ma_strncpy_s(pName, nameCap, deviceInfo.name, (size_t)-1);

        /*
        For safety, make sure the length is based on the truncated output string rather than the
        source. Otherwise the caller might assume the output buffer contains more content than it
        actually does.
        */
        if (pLengthNotIncludingNullTerminator != NULL) {
            *pLengthNotIncludingNullTerminator = strlen(pName);
        }
    } else {
        /* Name not specified. Just report the length of the source string. */
        if (pLengthNotIncludingNullTerminator != NULL) {
            *pLengthNotIncludingNullTerminator = strlen(deviceInfo.name);
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_device_start(ma_device* pDevice)
{
    ma_result result;

    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_device_get_state(pDevice) == ma_device_state_uninitialized) {
        return MA_INVALID_OPERATION;    /* Not initialized. */
    }

    if (ma_device_get_state(pDevice) == ma_device_state_started) {
        return MA_SUCCESS;  /* Already started. */
    }

    ma_mutex_lock(&pDevice->startStopLock);
    {
        /*
        We need to check again if the device is in a started state because it's possible for one thread to have started the device
        while another was waiting on the mutex.
        */
        if (ma_device_get_state(pDevice) == ma_device_state_started) {
            ma_mutex_unlock(&pDevice->startStopLock);
            return MA_SUCCESS;  /* Already started. */
        }

        /* Starting and stopping are wrapped in a mutex which means we can assert that the device is in a stopped or paused state. */
        MA_ASSERT(ma_device_get_state(pDevice) == ma_device_state_stopped);

        ma_device__set_state(pDevice, ma_device_state_starting);

        /* Asynchronous backends need to be handled differently. */
        if (ma_context_is_backend_asynchronous(pDevice->pContext)) {
            if (pDevice->pContext->callbacks.onDeviceStart != NULL) {
                result = pDevice->pContext->callbacks.onDeviceStart(pDevice);
            } else {
                result = MA_INVALID_OPERATION;
            }

            if (result == MA_SUCCESS) {
                ma_device__set_state(pDevice, ma_device_state_started);
                ma_device__on_notification_started(pDevice);
            }
        } else {
            /*
            Synchronous backends are started by signaling an event that's being waited on in the worker thread. We first wake up the
            thread and then wait for the start event.
            */
            ma_event_signal(&pDevice->wakeupEvent);

            /*
            Wait for the worker thread to finish starting the device. Note that the worker thread will be the one who puts the device
            into the started state. Don't call ma_device__set_state() here.
            */
            ma_event_wait(&pDevice->startEvent);
            result = pDevice->workResult;
        }

        /* We changed the state from stopped to started, so if we failed, make sure we put the state back to stopped. */
        if (result != MA_SUCCESS) {
            ma_device__set_state(pDevice, ma_device_state_stopped);
        }
    }
    ma_mutex_unlock(&pDevice->startStopLock);

    return result;
}

MA_API ma_result ma_device_stop(ma_device* pDevice)
{
    ma_result result;

    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_device_get_state(pDevice) == ma_device_state_uninitialized) {
        return MA_INVALID_OPERATION;    /* Not initialized. */
    }

    if (ma_device_get_state(pDevice) == ma_device_state_stopped) {
        return MA_SUCCESS;  /* Already stopped. */
    }

    ma_mutex_lock(&pDevice->startStopLock);
    {
        /*
        We need to check again if the device is in a stopped state because it's possible for one thread to have stopped the device
        while another was waiting on the mutex.
        */
        if (ma_device_get_state(pDevice) == ma_device_state_stopped) {
            ma_mutex_unlock(&pDevice->startStopLock);
            return MA_SUCCESS;  /* Already stopped. */
        }

        /* Starting and stopping are wrapped in a mutex which means we can assert that the device is in a started or paused state. */
        MA_ASSERT(ma_device_get_state(pDevice) == ma_device_state_started);

        ma_device__set_state(pDevice, ma_device_state_stopping);

        /* Asynchronous backends need to be handled differently. */
        if (ma_context_is_backend_asynchronous(pDevice->pContext)) {
            /* Asynchronous backends must have a stop operation. */
            if (pDevice->pContext->callbacks.onDeviceStop != NULL) {
                result = pDevice->pContext->callbacks.onDeviceStop(pDevice);
            } else {
                result = MA_INVALID_OPERATION;
            }

            ma_device__set_state(pDevice, ma_device_state_stopped);
        } else {
            /*
            Synchronous backends. The stop callback is always called from the worker thread. Do not call the stop callback here. If
            the backend is implementing its own audio thread loop we'll need to wake it up if required. Note that we need to make
            sure the state of the device is *not* playing right now, which it shouldn't be since we set it above. This is super
            important though, so I'm asserting it here as well for extra safety in case we accidentally change something later.
            */
            MA_ASSERT(ma_device_get_state(pDevice) != ma_device_state_started);

            if (pDevice->pContext->callbacks.onDeviceDataLoopWakeup != NULL) {
                pDevice->pContext->callbacks.onDeviceDataLoopWakeup(pDevice);
            }

            /*
            We need to wait for the worker thread to become available for work before returning. Note that the worker thread will be
            the one who puts the device into the stopped state. Don't call ma_device__set_state() here.
            */
            ma_event_wait(&pDevice->stopEvent);
            result = MA_SUCCESS;
        }

        /*
        This is a safety measure to ensure the internal buffer has been cleared so any leftover
        does not get played the next time the device starts. Ideally this should be drained by
        the backend first.
        */
        pDevice->playback.intermediaryBufferLen = 0;
        pDevice->playback.inputCacheConsumed    = 0;
        pDevice->playback.inputCacheRemaining   = 0;
    }
    ma_mutex_unlock(&pDevice->startStopLock);

    return result;
}

MA_API ma_bool32 ma_device_is_started(const ma_device* pDevice)
{
    return ma_device_get_state(pDevice) == ma_device_state_started;
}

MA_API ma_device_state ma_device_get_state(const ma_device* pDevice)
{
    if (pDevice == NULL) {
        return ma_device_state_uninitialized;
    }

    return ma_atomic_device_state_get((ma_atomic_device_state*)&pDevice->state);   /* Naughty cast to get rid of a const warning. */
}

MA_API ma_result ma_device_set_master_volume(ma_device* pDevice, float volume)
{
    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    if (volume < 0.0f) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_float_set(&pDevice->masterVolumeFactor, volume);

    return MA_SUCCESS;
}

MA_API ma_result ma_device_get_master_volume(ma_device* pDevice, float* pVolume)
{
    if (pVolume == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDevice == NULL) {
        *pVolume = 0;
        return MA_INVALID_ARGS;
    }

    *pVolume = ma_atomic_float_get(&pDevice->masterVolumeFactor);

    return MA_SUCCESS;
}

MA_API ma_result ma_device_set_master_volume_db(ma_device* pDevice, float gainDB)
{
    if (gainDB > 0) {
        return MA_INVALID_ARGS;
    }

    return ma_device_set_master_volume(pDevice, ma_volume_db_to_linear(gainDB));
}

MA_API ma_result ma_device_get_master_volume_db(ma_device* pDevice, float* pGainDB)
{
    float factor;
    ma_result result;

    if (pGainDB == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_device_get_master_volume(pDevice, &factor);
    if (result != MA_SUCCESS) {
        *pGainDB = 0;
        return result;
    }

    *pGainDB = ma_volume_linear_to_db(factor);

    return MA_SUCCESS;
}


MA_API ma_result ma_device_handle_backend_data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
{
    if (pDevice == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pOutput == NULL && pInput == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    There is an assert deeper in the code that checks that frameCount > 0. Since this is a public facing
    API we'll need to check for that here. I've had reports that AAudio can sometimes post a frame count
    of 0.
    */
    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pDevice->type == ma_device_type_duplex) {
        if (pInput != NULL) {
            ma_device__handle_duplex_callback_capture(pDevice, frameCount, pInput, &pDevice->duplexRB.rb);
        }

        if (pOutput != NULL) {
            ma_device__handle_duplex_callback_playback(pDevice, frameCount, pOutput, &pDevice->duplexRB.rb);
        }
    } else {
        if (pDevice->type == ma_device_type_capture || pDevice->type == ma_device_type_loopback) {
            if (pInput == NULL) {
                return MA_INVALID_ARGS;
            }

            ma_device__send_frames_to_client(pDevice, frameCount, pInput);
        }

        if (pDevice->type == ma_device_type_playback) {
            if (pOutput == NULL) {
                return MA_INVALID_ARGS;
            }

            ma_device__read_frames_from_client(pDevice, frameCount, pOutput);
        }
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_calculate_buffer_size_in_frames_from_descriptor(const ma_device_descriptor* pDescriptor, ma_uint32 nativeSampleRate, ma_performance_profile performanceProfile)
{
    if (pDescriptor == NULL) {
        return 0;
    }

    /*
    We must have a non-0 native sample rate, but some backends don't allow retrieval of this at the
    time when the size of the buffer needs to be determined. In this case we need to just take a best
    guess and move on. We'll try using the sample rate in pDescriptor first. If that's not set we'll
    just fall back to MA_DEFAULT_SAMPLE_RATE.
    */
    if (nativeSampleRate == 0) {
        nativeSampleRate = pDescriptor->sampleRate;
    }
    if (nativeSampleRate == 0) {
        nativeSampleRate = MA_DEFAULT_SAMPLE_RATE;
    }

    MA_ASSERT(nativeSampleRate != 0);

    if (pDescriptor->periodSizeInFrames == 0) {
        if (pDescriptor->periodSizeInMilliseconds == 0) {
            if (performanceProfile == ma_performance_profile_low_latency) {
                return ma_calculate_buffer_size_in_frames_from_milliseconds(MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_LOW_LATENCY, nativeSampleRate);
            } else {
                return ma_calculate_buffer_size_in_frames_from_milliseconds(MA_DEFAULT_PERIOD_SIZE_IN_MILLISECONDS_CONSERVATIVE, nativeSampleRate);
            }
        } else {
            return ma_calculate_buffer_size_in_frames_from_milliseconds(pDescriptor->periodSizeInMilliseconds, nativeSampleRate);
        }
    } else {
        return pDescriptor->periodSizeInFrames;
    }
}
#endif  /* MA_NO_DEVICE_IO */


MA_API ma_uint32 ma_calculate_buffer_size_in_milliseconds_from_frames(ma_uint32 bufferSizeInFrames, ma_uint32 sampleRate)
{
    /* Prevent a division by zero. */
    if (sampleRate == 0) {
        return 0;
    }

    return (bufferSizeInFrames*1000 + (sampleRate - 1)) / sampleRate;
}

MA_API ma_uint32 ma_calculate_buffer_size_in_frames_from_milliseconds(ma_uint32 bufferSizeInMilliseconds, ma_uint32 sampleRate)
{
    /* Prevent a division by zero. */
    if (sampleRate == 0) {
        return 0;
    }

    return bufferSizeInMilliseconds*sampleRate / 1000;
}

MA_API void ma_copy_pcm_frames(void* dst, const void* src, ma_uint64 frameCount, ma_format format, ma_uint32 channels)
{
    if (dst == src) {
        return; /* No-op. */
    }

    ma_copy_memory_64(dst, src, frameCount * ma_get_bytes_per_frame(format, channels));
}

MA_API void ma_silence_pcm_frames(void* p, ma_uint64 frameCount, ma_format format, ma_uint32 channels)
{
    if (format == ma_format_u8) {
        ma_uint64 sampleCount = frameCount * channels;
        ma_uint64 iSample;
        for (iSample = 0; iSample < sampleCount; iSample += 1) {
            ((ma_uint8*)p)[iSample] = 128;
        }
    } else {
        ma_zero_memory_64(p, frameCount * ma_get_bytes_per_frame(format, channels));
    }
}

MA_API void* ma_offset_pcm_frames_ptr(void* p, ma_uint64 offsetInFrames, ma_format format, ma_uint32 channels)
{
    return ma_offset_ptr(p, offsetInFrames * ma_get_bytes_per_frame(format, channels));
}

MA_API const void* ma_offset_pcm_frames_const_ptr(const void* p, ma_uint64 offsetInFrames, ma_format format, ma_uint32 channels)
{
    return ma_offset_ptr(p, offsetInFrames * ma_get_bytes_per_frame(format, channels));
}


MA_API void ma_clip_samples_u8(ma_uint8* pDst, const ma_int16* pSrc, ma_uint64 count)
{
    ma_uint64 iSample;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_u8(pSrc[iSample]);
    }
}

MA_API void ma_clip_samples_s16(ma_int16* pDst, const ma_int32* pSrc, ma_uint64 count)
{
    ma_uint64 iSample;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_s16(pSrc[iSample]);
    }
}

MA_API void ma_clip_samples_s24(ma_uint8* pDst, const ma_int64* pSrc, ma_uint64 count)
{
    ma_uint64 iSample;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    for (iSample = 0; iSample < count; iSample += 1) {
        ma_int64 s = ma_clip_s24(pSrc[iSample]);
        pDst[iSample*3 + 0] = (ma_uint8)((s & 0x000000FF) >>  0);
        pDst[iSample*3 + 1] = (ma_uint8)((s & 0x0000FF00) >>  8);
        pDst[iSample*3 + 2] = (ma_uint8)((s & 0x00FF0000) >> 16);
    }
}

MA_API void ma_clip_samples_s32(ma_int32* pDst, const ma_int64* pSrc, ma_uint64 count)
{
    ma_uint64 iSample;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_s32(pSrc[iSample]);
    }
}

MA_API void ma_clip_samples_f32(float* pDst, const float* pSrc, ma_uint64 count)
{
    ma_uint64 iSample;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_f32(pSrc[iSample]);
    }
}

MA_API void ma_clip_pcm_frames(void* pDst, const void* pSrc, ma_uint64 frameCount, ma_format format, ma_uint32 channels)
{
    ma_uint64 sampleCount;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    sampleCount = frameCount * channels;

    switch (format) {
        case ma_format_u8:  ma_clip_samples_u8( (ma_uint8*)pDst, (const ma_int16*)pSrc, sampleCount); break;
        case ma_format_s16: ma_clip_samples_s16((ma_int16*)pDst, (const ma_int32*)pSrc, sampleCount); break;
        case ma_format_s24: ma_clip_samples_s24((ma_uint8*)pDst, (const ma_int64*)pSrc, sampleCount); break;
        case ma_format_s32: ma_clip_samples_s32((ma_int32*)pDst, (const ma_int64*)pSrc, sampleCount); break;
        case ma_format_f32: ma_clip_samples_f32((   float*)pDst, (const    float*)pSrc, sampleCount); break;

        /* Do nothing if we don't know the format. We're including these here to silence a compiler warning about enums not being handled by the switch. */
        case ma_format_unknown:
        case ma_format_count:
            break;
    }
}


MA_API void ma_copy_and_apply_volume_factor_u8(ma_uint8* pSamplesOut, const ma_uint8* pSamplesIn, ma_uint64 sampleCount, float factor)
{
    ma_uint64 iSample;

    if (pSamplesOut == NULL || pSamplesIn == NULL) {
        return;
    }

    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamplesOut[iSample] = (ma_uint8)(pSamplesIn[iSample] * factor);
    }
}

MA_API void ma_copy_and_apply_volume_factor_s16(ma_int16* pSamplesOut, const ma_int16* pSamplesIn, ma_uint64 sampleCount, float factor)
{
    ma_uint64 iSample;

    if (pSamplesOut == NULL || pSamplesIn == NULL) {
        return;
    }

    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamplesOut[iSample] = (ma_int16)(pSamplesIn[iSample] * factor);
    }
}

MA_API void ma_copy_and_apply_volume_factor_s24(void* pSamplesOut, const void* pSamplesIn, ma_uint64 sampleCount, float factor)
{
    ma_uint64 iSample;
    ma_uint8* pSamplesOut8;
    ma_uint8* pSamplesIn8;

    if (pSamplesOut == NULL || pSamplesIn == NULL) {
        return;
    }

    pSamplesOut8 = (ma_uint8*)pSamplesOut;
    pSamplesIn8  = (ma_uint8*)pSamplesIn;

    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        ma_int32 sampleS32;

        sampleS32 = (ma_int32)(((ma_uint32)(pSamplesIn8[iSample*3+0]) << 8) | ((ma_uint32)(pSamplesIn8[iSample*3+1]) << 16) | ((ma_uint32)(pSamplesIn8[iSample*3+2])) << 24);
        sampleS32 = (ma_int32)(sampleS32 * factor);

        pSamplesOut8[iSample*3+0] = (ma_uint8)(((ma_uint32)sampleS32 & 0x0000FF00) >>  8);
        pSamplesOut8[iSample*3+1] = (ma_uint8)(((ma_uint32)sampleS32 & 0x00FF0000) >> 16);
        pSamplesOut8[iSample*3+2] = (ma_uint8)(((ma_uint32)sampleS32 & 0xFF000000) >> 24);
    }
}

MA_API void ma_copy_and_apply_volume_factor_s32(ma_int32* pSamplesOut, const ma_int32* pSamplesIn, ma_uint64 sampleCount, float factor)
{
    ma_uint64 iSample;

    if (pSamplesOut == NULL || pSamplesIn == NULL) {
        return;
    }

    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamplesOut[iSample] = (ma_int32)(pSamplesIn[iSample] * factor);
    }
}

MA_API void ma_copy_and_apply_volume_factor_f32(float* pSamplesOut, const float* pSamplesIn, ma_uint64 sampleCount, float factor)
{
    ma_uint64 iSample;

    if (pSamplesOut == NULL || pSamplesIn == NULL) {
        return;
    }

    if (factor == 1) {
        if (pSamplesOut == pSamplesIn) {
            /* In place. No-op. */
        } else {
            /* Just a copy. */
            for (iSample = 0; iSample < sampleCount; iSample += 1) {
                pSamplesOut[iSample] = pSamplesIn[iSample];
            }
        }
    } else {
        for (iSample = 0; iSample < sampleCount; iSample += 1) {
            pSamplesOut[iSample] = pSamplesIn[iSample] * factor;
        }
    }
}

MA_API void ma_apply_volume_factor_u8(ma_uint8* pSamples, ma_uint64 sampleCount, float factor)
{
    ma_copy_and_apply_volume_factor_u8(pSamples, pSamples, sampleCount, factor);
}

MA_API void ma_apply_volume_factor_s16(ma_int16* pSamples, ma_uint64 sampleCount, float factor)
{
    ma_copy_and_apply_volume_factor_s16(pSamples, pSamples, sampleCount, factor);
}

MA_API void ma_apply_volume_factor_s24(void* pSamples, ma_uint64 sampleCount, float factor)
{
    ma_copy_and_apply_volume_factor_s24(pSamples, pSamples, sampleCount, factor);
}

MA_API void ma_apply_volume_factor_s32(ma_int32* pSamples, ma_uint64 sampleCount, float factor)
{
    ma_copy_and_apply_volume_factor_s32(pSamples, pSamples, sampleCount, factor);
}

MA_API void ma_apply_volume_factor_f32(float* pSamples, ma_uint64 sampleCount, float factor)
{
    ma_copy_and_apply_volume_factor_f32(pSamples, pSamples, sampleCount, factor);
}

MA_API void ma_copy_and_apply_volume_factor_pcm_frames_u8(ma_uint8* pFramesOut, const ma_uint8* pFramesIn, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_u8(pFramesOut, pFramesIn, frameCount*channels, factor);
}

MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s16(ma_int16* pFramesOut, const ma_int16* pFramesIn, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_s16(pFramesOut, pFramesIn, frameCount*channels, factor);
}

MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s24(void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_s24(pFramesOut, pFramesIn, frameCount*channels, factor);
}

MA_API void ma_copy_and_apply_volume_factor_pcm_frames_s32(ma_int32* pFramesOut, const ma_int32* pFramesIn, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_s32(pFramesOut, pFramesIn, frameCount*channels, factor);
}

MA_API void ma_copy_and_apply_volume_factor_pcm_frames_f32(float* pFramesOut, const float* pFramesIn, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_f32(pFramesOut, pFramesIn, frameCount*channels, factor);
}

MA_API void ma_copy_and_apply_volume_factor_pcm_frames(void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount, ma_format format, ma_uint32 channels, float factor)
{
    switch (format)
    {
    case ma_format_u8:  ma_copy_and_apply_volume_factor_pcm_frames_u8 ((ma_uint8*)pFramesOut, (const ma_uint8*)pFramesIn, frameCount, channels, factor); return;
    case ma_format_s16: ma_copy_and_apply_volume_factor_pcm_frames_s16((ma_int16*)pFramesOut, (const ma_int16*)pFramesIn, frameCount, channels, factor); return;
    case ma_format_s24: ma_copy_and_apply_volume_factor_pcm_frames_s24(           pFramesOut,                  pFramesIn, frameCount, channels, factor); return;
    case ma_format_s32: ma_copy_and_apply_volume_factor_pcm_frames_s32((ma_int32*)pFramesOut, (const ma_int32*)pFramesIn, frameCount, channels, factor); return;
    case ma_format_f32: ma_copy_and_apply_volume_factor_pcm_frames_f32(   (float*)pFramesOut,    (const float*)pFramesIn, frameCount, channels, factor); return;
    default: return;    /* Do nothing. */
    }
}

MA_API void ma_apply_volume_factor_pcm_frames_u8(ma_uint8* pFrames, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_pcm_frames_u8(pFrames, pFrames, frameCount, channels, factor);
}

MA_API void ma_apply_volume_factor_pcm_frames_s16(ma_int16* pFrames, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_pcm_frames_s16(pFrames, pFrames, frameCount, channels, factor);
}

MA_API void ma_apply_volume_factor_pcm_frames_s24(void* pFrames, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_pcm_frames_s24(pFrames, pFrames, frameCount, channels, factor);
}

MA_API void ma_apply_volume_factor_pcm_frames_s32(ma_int32* pFrames, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_pcm_frames_s32(pFrames, pFrames, frameCount, channels, factor);
}

MA_API void ma_apply_volume_factor_pcm_frames_f32(float* pFrames, ma_uint64 frameCount, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_pcm_frames_f32(pFrames, pFrames, frameCount, channels, factor);
}

MA_API void ma_apply_volume_factor_pcm_frames(void* pFramesOut, ma_uint64 frameCount, ma_format format, ma_uint32 channels, float factor)
{
    ma_copy_and_apply_volume_factor_pcm_frames(pFramesOut, pFramesOut, frameCount, format, channels, factor);
}


MA_API void ma_copy_and_apply_volume_factor_per_channel_f32(float* pFramesOut, const float* pFramesIn, ma_uint64 frameCount, ma_uint32 channels, float* pChannelGains)
{
    ma_uint64 iFrame;

    if (channels == 2) {
        /* TODO: Do an optimized implementation for stereo and mono. Can do a SIMD optimized implementation as well. */
    }

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            pFramesOut[iFrame * channels + iChannel] = pFramesIn[iFrame * channels + iChannel] * pChannelGains[iChannel];
        }
    }
}



static MA_INLINE ma_int16 ma_apply_volume_unclipped_u8(ma_int16 x, ma_int16 volume)
{
    return (ma_int16)(((ma_int32)x * (ma_int32)volume) >> 8);
}

static MA_INLINE ma_int32 ma_apply_volume_unclipped_s16(ma_int32 x, ma_int16 volume)
{
    return (ma_int32)((x * volume) >> 8);
}

static MA_INLINE ma_int64 ma_apply_volume_unclipped_s24(ma_int64 x, ma_int16 volume)
{
    return (ma_int64)((x * volume) >> 8);
}

static MA_INLINE ma_int64 ma_apply_volume_unclipped_s32(ma_int64 x, ma_int16 volume)
{
    return (ma_int64)((x * volume) >> 8);
}

static MA_INLINE float ma_apply_volume_unclipped_f32(float x, float volume)
{
    return x * volume;
}


MA_API void ma_copy_and_apply_volume_and_clip_samples_u8(ma_uint8* pDst, const ma_int16* pSrc, ma_uint64 count, float volume)
{
    ma_uint64 iSample;
    ma_int16  volumeFixed;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    volumeFixed = ma_float_to_fixed_16(volume);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_u8(ma_apply_volume_unclipped_u8(pSrc[iSample], volumeFixed));
    }
}

MA_API void ma_copy_and_apply_volume_and_clip_samples_s16(ma_int16* pDst, const ma_int32* pSrc, ma_uint64 count, float volume)
{
    ma_uint64 iSample;
    ma_int16  volumeFixed;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    volumeFixed = ma_float_to_fixed_16(volume);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_s16(ma_apply_volume_unclipped_s16(pSrc[iSample], volumeFixed));
    }
}

MA_API void ma_copy_and_apply_volume_and_clip_samples_s24(ma_uint8* pDst, const ma_int64* pSrc, ma_uint64 count, float volume)
{
    ma_uint64 iSample;
    ma_int16  volumeFixed;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    volumeFixed = ma_float_to_fixed_16(volume);

    for (iSample = 0; iSample < count; iSample += 1) {
        ma_int64 s = ma_clip_s24(ma_apply_volume_unclipped_s24(pSrc[iSample], volumeFixed));
        pDst[iSample*3 + 0] = (ma_uint8)((s & 0x000000FF) >>  0);
        pDst[iSample*3 + 1] = (ma_uint8)((s & 0x0000FF00) >>  8);
        pDst[iSample*3 + 2] = (ma_uint8)((s & 0x00FF0000) >> 16);
    }
}

MA_API void ma_copy_and_apply_volume_and_clip_samples_s32(ma_int32* pDst, const ma_int64* pSrc, ma_uint64 count, float volume)
{
    ma_uint64 iSample;
    ma_int16  volumeFixed;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    volumeFixed = ma_float_to_fixed_16(volume);

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_s32(ma_apply_volume_unclipped_s32(pSrc[iSample], volumeFixed));
    }
}

MA_API void ma_copy_and_apply_volume_and_clip_samples_f32(float* pDst, const float* pSrc, ma_uint64 count, float volume)
{
    ma_uint64 iSample;

    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    /* For the f32 case we need to make sure this supports in-place processing where the input and output buffers are the same. */

    for (iSample = 0; iSample < count; iSample += 1) {
        pDst[iSample] = ma_clip_f32(ma_apply_volume_unclipped_f32(pSrc[iSample], volume));
    }
}

MA_API void ma_copy_and_apply_volume_and_clip_pcm_frames(void* pDst, const void* pSrc, ma_uint64 frameCount, ma_format format, ma_uint32 channels, float volume)
{
    MA_ASSERT(pDst != NULL);
    MA_ASSERT(pSrc != NULL);

    if (volume == 1) {
        ma_clip_pcm_frames(pDst, pSrc, frameCount, format, channels);   /* Optimized case for volume = 1. */
    } else if (volume == 0) {
        ma_silence_pcm_frames(pDst, frameCount, format, channels);      /* Optimized case for volume = 0. */
    } else {
        ma_uint64 sampleCount = frameCount * channels;

        switch (format) {
            case ma_format_u8:  ma_copy_and_apply_volume_and_clip_samples_u8( (ma_uint8*)pDst, (const ma_int16*)pSrc, sampleCount, volume); break;
            case ma_format_s16: ma_copy_and_apply_volume_and_clip_samples_s16((ma_int16*)pDst, (const ma_int32*)pSrc, sampleCount, volume); break;
            case ma_format_s24: ma_copy_and_apply_volume_and_clip_samples_s24((ma_uint8*)pDst, (const ma_int64*)pSrc, sampleCount, volume); break;
            case ma_format_s32: ma_copy_and_apply_volume_and_clip_samples_s32((ma_int32*)pDst, (const ma_int64*)pSrc, sampleCount, volume); break;
            case ma_format_f32: ma_copy_and_apply_volume_and_clip_samples_f32((   float*)pDst, (const    float*)pSrc, sampleCount, volume); break;

            /* Do nothing if we don't know the format. We're including these here to silence a compiler warning about enums not being handled by the switch. */
            case ma_format_unknown:
            case ma_format_count:
                break;
        }
    }
}



MA_API float ma_volume_linear_to_db(float factor)
{
    return 20*ma_log10f(factor);
}

MA_API float ma_volume_db_to_linear(float gain)
{
    return ma_powf(10, gain/20.0f);
}


MA_API ma_result ma_mix_pcm_frames_f32(float* pDst, const float* pSrc, ma_uint64 frameCount, ma_uint32 channels, float volume)
{
    ma_uint64 iSample;
    ma_uint64 sampleCount;

    if (pDst == NULL || pSrc == NULL || channels == 0) {
        return MA_INVALID_ARGS;
    }

    if (volume == 0) {
        return MA_SUCCESS;  /* No changes if the volume is 0. */
    }

    sampleCount = frameCount * channels;

    if (volume == 1) {
        for (iSample = 0; iSample < sampleCount; iSample += 1) {
            pDst[iSample] += pSrc[iSample];
        }
    } else {
        for (iSample = 0; iSample < sampleCount; iSample += 1) {
            pDst[iSample] += ma_apply_volume_unclipped_f32(pSrc[iSample], volume);
        }
    }

    return MA_SUCCESS;
}



/**************************************************************************************************************************************************************

Format Conversion

**************************************************************************************************************************************************************/

static MA_INLINE ma_int16 ma_pcm_sample_f32_to_s16(float x)
{
    return (ma_int16)(x * 32767.0f);
}

static MA_INLINE ma_int16 ma_pcm_sample_u8_to_s16_no_scale(ma_uint8 x)
{
    return (ma_int16)((ma_int16)x - 128);
}

static MA_INLINE ma_int64 ma_pcm_sample_s24_to_s32_no_scale(const ma_uint8* x)
{
    return (ma_int64)(((ma_uint64)x[0] << 40) | ((ma_uint64)x[1] << 48) | ((ma_uint64)x[2] << 56)) >> 40;  /* Make sure the sign bits are maintained. */
}

static MA_INLINE void ma_pcm_sample_s32_to_s24_no_scale(ma_int64 x, ma_uint8* s24)
{
    s24[0] = (ma_uint8)((x & 0x000000FF) >>  0);
    s24[1] = (ma_uint8)((x & 0x0000FF00) >>  8);
    s24[2] = (ma_uint8)((x & 0x00FF0000) >> 16);
}


/* u8 */
MA_API void ma_pcm_u8_to_u8(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    (void)ditherMode;
    ma_copy_memory_64(dst, src, count * sizeof(ma_uint8));
}


static MA_INLINE void ma_pcm_u8_to_s16__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int16* dst_s16 = (ma_int16*)dst;
    const ma_uint8* src_u8 = (const ma_uint8*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        ma_int16 x = src_u8[i];
        x = (ma_int16)(x - 128);
        x = (ma_int16)(x << 8);
        dst_s16[i] = x;
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_u8_to_s16__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s16__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_u8_to_s16__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s16__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_u8_to_s16__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s16__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_u8_to_s16(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_u8_to_s16__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_u8_to_s16__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_u8_to_s16__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_u8_to_s16__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_u8_to_s24__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_s24 = (ma_uint8*)dst;
    const ma_uint8* src_u8 = (const ma_uint8*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        ma_int16 x = src_u8[i];
        x = (ma_int16)(x - 128);

        dst_s24[i*3+0] = 0;
        dst_s24[i*3+1] = 0;
        dst_s24[i*3+2] = (ma_uint8)((ma_int8)x);
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_u8_to_s24__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s24__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_u8_to_s24__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s24__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_u8_to_s24__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s24__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_u8_to_s24(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_u8_to_s24__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_u8_to_s24__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_u8_to_s24__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_u8_to_s24__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_u8_to_s32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int32* dst_s32 = (ma_int32*)dst;
    const ma_uint8* src_u8 = (const ma_uint8*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        ma_int32 x = src_u8[i];
        x = x - 128;
        x = x << 24;
        dst_s32[i] = x;
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_u8_to_s32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_u8_to_s32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_u8_to_s32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_s32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_u8_to_s32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_u8_to_s32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_u8_to_s32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_u8_to_s32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_u8_to_s32__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_u8_to_f32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    float* dst_f32 = (float*)dst;
    const ma_uint8* src_u8 = (const ma_uint8*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        float x = (float)src_u8[i];
        x = x * 0.00784313725490196078f;    /* 0..255 to 0..2 */
        x = x - 1;                          /* 0..2 to -1..1 */

        dst_f32[i] = x;
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_u8_to_f32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_f32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_u8_to_f32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_f32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_u8_to_f32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_u8_to_f32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_u8_to_f32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_u8_to_f32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_u8_to_f32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_u8_to_f32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_u8_to_f32__optimized(dst, src, count, ditherMode);
        }
#endif
}


#ifdef MA_USE_REFERENCE_CONVERSION_APIS
static MA_INLINE void ma_pcm_interleave_u8__reference(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_uint8* dst_u8 = (ma_uint8*)dst;
    const ma_uint8** src_u8 = (const ma_uint8**)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_u8[iFrame*channels + iChannel] = src_u8[iChannel][iFrame];
        }
    }
}
#else
static MA_INLINE void ma_pcm_interleave_u8__optimized(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_uint8* dst_u8 = (ma_uint8*)dst;
    const ma_uint8** src_u8 = (const ma_uint8**)src;

    if (channels == 1) {
        ma_copy_memory_64(dst, src[0], frameCount * sizeof(ma_uint8));
    } else if (channels == 2) {
        ma_uint64 iFrame;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            dst_u8[iFrame*2 + 0] = src_u8[0][iFrame];
            dst_u8[iFrame*2 + 1] = src_u8[1][iFrame];
        }
    } else {
        ma_uint64 iFrame;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            ma_uint32 iChannel;
            for (iChannel = 0; iChannel < channels; iChannel += 1) {
                dst_u8[iFrame*channels + iChannel] = src_u8[iChannel][iFrame];
            }
        }
    }
}
#endif

MA_API void ma_pcm_interleave_u8(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_interleave_u8__reference(dst, src, frameCount, channels);
#else
    ma_pcm_interleave_u8__optimized(dst, src, frameCount, channels);
#endif
}


static MA_INLINE void ma_pcm_deinterleave_u8__reference(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_uint8** dst_u8 = (ma_uint8**)dst;
    const ma_uint8* src_u8 = (const ma_uint8*)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_u8[iChannel][iFrame] = src_u8[iFrame*channels + iChannel];
        }
    }
}

static MA_INLINE void ma_pcm_deinterleave_u8__optimized(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_deinterleave_u8__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_deinterleave_u8(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_deinterleave_u8__reference(dst, src, frameCount, channels);
#else
    ma_pcm_deinterleave_u8__optimized(dst, src, frameCount, channels);
#endif
}


/* s16 */
static MA_INLINE void ma_pcm_s16_to_u8__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_u8 = (ma_uint8*)dst;
    const ma_int16* src_s16 = (const ma_int16*)src;

    if (ditherMode == ma_dither_mode_none) {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int16 x = src_s16[i];
            x = (ma_int16)(x >> 8);
            x = (ma_int16)(x + 128);
            dst_u8[i] = (ma_uint8)x;
        }
    } else {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int16 x = src_s16[i];

            /* Dither. Don't overflow. */
            ma_int32 dither = ma_dither_s32(ditherMode, -0x80, 0x7F);
            if ((x + dither) <= 0x7FFF) {
                x = (ma_int16)(x + dither);
            } else {
                x = 0x7FFF;
            }

            x = (ma_int16)(x >> 8);
            x = (ma_int16)(x + 128);
            dst_u8[i] = (ma_uint8)x;
        }
    }
}

static MA_INLINE void ma_pcm_s16_to_u8__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_u8__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s16_to_u8__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_u8__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s16_to_u8__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_u8__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s16_to_u8(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s16_to_u8__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s16_to_u8__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s16_to_u8__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s16_to_u8__optimized(dst, src, count, ditherMode);
        }
#endif
}


MA_API void ma_pcm_s16_to_s16(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    (void)ditherMode;
    ma_copy_memory_64(dst, src, count * sizeof(ma_int16));
}


static MA_INLINE void ma_pcm_s16_to_s24__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_s24 = (ma_uint8*)dst;
    const ma_int16* src_s16 = (const ma_int16*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        dst_s24[i*3+0] = 0;
        dst_s24[i*3+1] = (ma_uint8)(src_s16[i] & 0xFF);
        dst_s24[i*3+2] = (ma_uint8)(src_s16[i] >> 8);
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_s16_to_s24__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_s24__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s16_to_s24__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_s24__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s16_to_s24__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_s24__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s16_to_s24(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s16_to_s24__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s16_to_s24__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s16_to_s24__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s16_to_s24__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_s16_to_s32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int32* dst_s32 = (ma_int32*)dst;
    const ma_int16* src_s16 = (const ma_int16*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        dst_s32[i] = src_s16[i] << 16;
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_s16_to_s32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_s32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s16_to_s32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_s32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s16_to_s32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_s32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s16_to_s32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s16_to_s32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s16_to_s32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s16_to_s32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s16_to_s32__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_s16_to_f32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    float* dst_f32 = (float*)dst;
    const ma_int16* src_s16 = (const ma_int16*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        float x = (float)src_s16[i];

#if 0
        /* The accurate way. */
        x = x + 32768.0f;                   /* -32768..32767 to 0..65535 */
        x = x * 0.00003051804379339284f;    /* 0..65535 to 0..2 */
        x = x - 1;                          /* 0..2 to -1..1 */
#else
        /* The fast way. */
        x = x * 0.000030517578125f;         /* -32768..32767 to -1..0.999969482421875 */
#endif

        dst_f32[i] = x;
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_s16_to_f32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_f32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s16_to_f32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_f32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s16_to_f32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s16_to_f32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s16_to_f32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s16_to_f32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s16_to_f32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s16_to_f32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s16_to_f32__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_interleave_s16__reference(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_int16* dst_s16 = (ma_int16*)dst;
    const ma_int16** src_s16 = (const ma_int16**)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_s16[iFrame*channels + iChannel] = src_s16[iChannel][iFrame];
        }
    }
}

static MA_INLINE void ma_pcm_interleave_s16__optimized(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_interleave_s16__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_interleave_s16(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_interleave_s16__reference(dst, src, frameCount, channels);
#else
    ma_pcm_interleave_s16__optimized(dst, src, frameCount, channels);
#endif
}


static MA_INLINE void ma_pcm_deinterleave_s16__reference(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_int16** dst_s16 = (ma_int16**)dst;
    const ma_int16* src_s16 = (const ma_int16*)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_s16[iChannel][iFrame] = src_s16[iFrame*channels + iChannel];
        }
    }
}

static MA_INLINE void ma_pcm_deinterleave_s16__optimized(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_deinterleave_s16__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_deinterleave_s16(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_deinterleave_s16__reference(dst, src, frameCount, channels);
#else
    ma_pcm_deinterleave_s16__optimized(dst, src, frameCount, channels);
#endif
}


/* s24 */
static MA_INLINE void ma_pcm_s24_to_u8__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_u8 = (ma_uint8*)dst;
    const ma_uint8* src_s24 = (const ma_uint8*)src;

    if (ditherMode == ma_dither_mode_none) {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            dst_u8[i] = (ma_uint8)((ma_int8)src_s24[i*3 + 2] + 128);
        }
    } else {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int32 x = (ma_int32)(((ma_uint32)(src_s24[i*3+0]) << 8) | ((ma_uint32)(src_s24[i*3+1]) << 16) | ((ma_uint32)(src_s24[i*3+2])) << 24);

            /* Dither. Don't overflow. */
            ma_int32 dither = ma_dither_s32(ditherMode, -0x800000, 0x7FFFFF);
            if ((ma_int64)x + dither <= 0x7FFFFFFF) {
                x = x + dither;
            } else {
                x = 0x7FFFFFFF;
            }

            x = x >> 24;
            x = x + 128;
            dst_u8[i] = (ma_uint8)x;
        }
    }
}

static MA_INLINE void ma_pcm_s24_to_u8__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_u8__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s24_to_u8__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_u8__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s24_to_u8__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_u8__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s24_to_u8(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s24_to_u8__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s24_to_u8__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s24_to_u8__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s24_to_u8__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_s24_to_s16__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int16* dst_s16 = (ma_int16*)dst;
    const ma_uint8* src_s24 = (const ma_uint8*)src;

    if (ditherMode == ma_dither_mode_none) {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_uint16 dst_lo =            ((ma_uint16)src_s24[i*3 + 1]);
            ma_uint16 dst_hi = (ma_uint16)((ma_uint16)src_s24[i*3 + 2] << 8);
            dst_s16[i] = (ma_int16)(dst_lo | dst_hi);
        }
    } else {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int32 x = (ma_int32)(((ma_uint32)(src_s24[i*3+0]) << 8) | ((ma_uint32)(src_s24[i*3+1]) << 16) | ((ma_uint32)(src_s24[i*3+2])) << 24);

            /* Dither. Don't overflow. */
            ma_int32 dither = ma_dither_s32(ditherMode, -0x8000, 0x7FFF);
            if ((ma_int64)x + dither <= 0x7FFFFFFF) {
                x = x + dither;
            } else {
                x = 0x7FFFFFFF;
            }

            x = x >> 16;
            dst_s16[i] = (ma_int16)x;
        }
    }
}

static MA_INLINE void ma_pcm_s24_to_s16__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_s16__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s24_to_s16__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_s16__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s24_to_s16__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_s16__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s24_to_s16(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s24_to_s16__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s24_to_s16__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s24_to_s16__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s24_to_s16__optimized(dst, src, count, ditherMode);
        }
#endif
}


MA_API void ma_pcm_s24_to_s24(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    (void)ditherMode;

    ma_copy_memory_64(dst, src, count * 3);
}


static MA_INLINE void ma_pcm_s24_to_s32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int32* dst_s32 = (ma_int32*)dst;
    const ma_uint8* src_s24 = (const ma_uint8*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        dst_s32[i] = (ma_int32)(((ma_uint32)(src_s24[i*3+0]) << 8) | ((ma_uint32)(src_s24[i*3+1]) << 16) | ((ma_uint32)(src_s24[i*3+2])) << 24);
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_s24_to_s32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_s32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s24_to_s32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_s32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s24_to_s32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_s32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s24_to_s32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s24_to_s32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s24_to_s32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s24_to_s32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s24_to_s32__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_s24_to_f32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    float* dst_f32 = (float*)dst;
    const ma_uint8* src_s24 = (const ma_uint8*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        float x = (float)(((ma_int32)(((ma_uint32)(src_s24[i*3+0]) << 8) | ((ma_uint32)(src_s24[i*3+1]) << 16) | ((ma_uint32)(src_s24[i*3+2])) << 24)) >> 8);

#if 0
        /* The accurate way. */
        x = x + 8388608.0f;                 /* -8388608..8388607 to 0..16777215 */
        x = x * 0.00000011920929665621f;    /* 0..16777215 to 0..2 */
        x = x - 1;                          /* 0..2 to -1..1 */
#else
        /* The fast way. */
        x = x * 0.00000011920928955078125f; /* -8388608..8388607 to -1..0.999969482421875 */
#endif

        dst_f32[i] = x;
    }

    (void)ditherMode;
}

static MA_INLINE void ma_pcm_s24_to_f32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_f32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s24_to_f32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_f32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s24_to_f32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s24_to_f32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s24_to_f32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s24_to_f32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s24_to_f32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s24_to_f32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s24_to_f32__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_interleave_s24__reference(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_uint8* dst8 = (ma_uint8*)dst;
    const ma_uint8** src8 = (const ma_uint8**)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst8[iFrame*3*channels + iChannel*3 + 0] = src8[iChannel][iFrame*3 + 0];
            dst8[iFrame*3*channels + iChannel*3 + 1] = src8[iChannel][iFrame*3 + 1];
            dst8[iFrame*3*channels + iChannel*3 + 2] = src8[iChannel][iFrame*3 + 2];
        }
    }
}

static MA_INLINE void ma_pcm_interleave_s24__optimized(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_interleave_s24__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_interleave_s24(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_interleave_s24__reference(dst, src, frameCount, channels);
#else
    ma_pcm_interleave_s24__optimized(dst, src, frameCount, channels);
#endif
}


static MA_INLINE void ma_pcm_deinterleave_s24__reference(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_uint8** dst8 = (ma_uint8**)dst;
    const ma_uint8* src8 = (const ma_uint8*)src;

    ma_uint32 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst8[iChannel][iFrame*3 + 0] = src8[iFrame*3*channels + iChannel*3 + 0];
            dst8[iChannel][iFrame*3 + 1] = src8[iFrame*3*channels + iChannel*3 + 1];
            dst8[iChannel][iFrame*3 + 2] = src8[iFrame*3*channels + iChannel*3 + 2];
        }
    }
}

static MA_INLINE void ma_pcm_deinterleave_s24__optimized(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_deinterleave_s24__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_deinterleave_s24(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_deinterleave_s24__reference(dst, src, frameCount, channels);
#else
    ma_pcm_deinterleave_s24__optimized(dst, src, frameCount, channels);
#endif
}



/* s32 */
static MA_INLINE void ma_pcm_s32_to_u8__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_u8 = (ma_uint8*)dst;
    const ma_int32* src_s32 = (const ma_int32*)src;

    if (ditherMode == ma_dither_mode_none) {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int32 x = src_s32[i];
            x = x >> 24;
            x = x + 128;
            dst_u8[i] = (ma_uint8)x;
        }
    } else {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int32 x = src_s32[i];

            /* Dither. Don't overflow. */
            ma_int32 dither = ma_dither_s32(ditherMode, -0x800000, 0x7FFFFF);
            if ((ma_int64)x + dither <= 0x7FFFFFFF) {
                x = x + dither;
            } else {
                x = 0x7FFFFFFF;
            }

            x = x >> 24;
            x = x + 128;
            dst_u8[i] = (ma_uint8)x;
        }
    }
}

static MA_INLINE void ma_pcm_s32_to_u8__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_u8__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s32_to_u8__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_u8__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s32_to_u8__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_u8__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s32_to_u8(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s32_to_u8__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s32_to_u8__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s32_to_u8__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s32_to_u8__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_s32_to_s16__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int16* dst_s16 = (ma_int16*)dst;
    const ma_int32* src_s32 = (const ma_int32*)src;

    if (ditherMode == ma_dither_mode_none) {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int32 x = src_s32[i];
            x = x >> 16;
            dst_s16[i] = (ma_int16)x;
        }
    } else {
        ma_uint64 i;
        for (i = 0; i < count; i += 1) {
            ma_int32 x = src_s32[i];

            /* Dither. Don't overflow. */
            ma_int32 dither = ma_dither_s32(ditherMode, -0x8000, 0x7FFF);
            if ((ma_int64)x + dither <= 0x7FFFFFFF) {
                x = x + dither;
            } else {
                x = 0x7FFFFFFF;
            }

            x = x >> 16;
            dst_s16[i] = (ma_int16)x;
        }
    }
}

static MA_INLINE void ma_pcm_s32_to_s16__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_s16__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s32_to_s16__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_s16__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s32_to_s16__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_s16__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s32_to_s16(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s32_to_s16__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s32_to_s16__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s32_to_s16__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s32_to_s16__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_s32_to_s24__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_s24 = (ma_uint8*)dst;
    const ma_int32* src_s32 = (const ma_int32*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        ma_uint32 x = (ma_uint32)src_s32[i];
        dst_s24[i*3+0] = (ma_uint8)((x & 0x0000FF00) >>  8);
        dst_s24[i*3+1] = (ma_uint8)((x & 0x00FF0000) >> 16);
        dst_s24[i*3+2] = (ma_uint8)((x & 0xFF000000) >> 24);
    }

    (void)ditherMode;   /* No dithering for s32 -> s24. */
}

static MA_INLINE void ma_pcm_s32_to_s24__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_s24__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s32_to_s24__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_s24__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s32_to_s24__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_s24__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s32_to_s24(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s32_to_s24__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s32_to_s24__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s32_to_s24__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s32_to_s24__optimized(dst, src, count, ditherMode);
        }
#endif
}


MA_API void ma_pcm_s32_to_s32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    (void)ditherMode;

    ma_copy_memory_64(dst, src, count * sizeof(ma_int32));
}


static MA_INLINE void ma_pcm_s32_to_f32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    float* dst_f32 = (float*)dst;
    const ma_int32* src_s32 = (const ma_int32*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        double x = src_s32[i];

#if 0
        x = x + 2147483648.0;
        x = x * 0.0000000004656612873077392578125;
        x = x - 1;
#else
        x = x / 2147483648.0;
#endif

        dst_f32[i] = (float)x;
    }

    (void)ditherMode;   /* No dithering for s32 -> f32. */
}

static MA_INLINE void ma_pcm_s32_to_f32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_f32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_s32_to_f32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_f32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_s32_to_f32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_s32_to_f32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_s32_to_f32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_s32_to_f32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_s32_to_f32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_s32_to_f32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_s32_to_f32__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_interleave_s32__reference(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_int32* dst_s32 = (ma_int32*)dst;
    const ma_int32** src_s32 = (const ma_int32**)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_s32[iFrame*channels + iChannel] = src_s32[iChannel][iFrame];
        }
    }
}

static MA_INLINE void ma_pcm_interleave_s32__optimized(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_interleave_s32__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_interleave_s32(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_interleave_s32__reference(dst, src, frameCount, channels);
#else
    ma_pcm_interleave_s32__optimized(dst, src, frameCount, channels);
#endif
}


static MA_INLINE void ma_pcm_deinterleave_s32__reference(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_int32** dst_s32 = (ma_int32**)dst;
    const ma_int32* src_s32 = (const ma_int32*)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_s32[iChannel][iFrame] = src_s32[iFrame*channels + iChannel];
        }
    }
}

static MA_INLINE void ma_pcm_deinterleave_s32__optimized(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_deinterleave_s32__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_deinterleave_s32(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_deinterleave_s32__reference(dst, src, frameCount, channels);
#else
    ma_pcm_deinterleave_s32__optimized(dst, src, frameCount, channels);
#endif
}


/* f32 */
static MA_INLINE void ma_pcm_f32_to_u8__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint64 i;

    ma_uint8* dst_u8 = (ma_uint8*)dst;
    const float* src_f32 = (const float*)src;

    float ditherMin = 0;
    float ditherMax = 0;
    if (ditherMode != ma_dither_mode_none) {
        ditherMin = 1.0f / -128;
        ditherMax = 1.0f /  127;
    }

    for (i = 0; i < count; i += 1) {
        float x = src_f32[i];
        x = x + ma_dither_f32(ditherMode, ditherMin, ditherMax);
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */
        x = x + 1;                                  /* -1..1 to 0..2 */
        x = x * 127.5f;                             /* 0..2 to 0..255 */

        dst_u8[i] = (ma_uint8)x;
    }
}

static MA_INLINE void ma_pcm_f32_to_u8__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_u8__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_f32_to_u8__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_u8__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_f32_to_u8__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_u8__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_f32_to_u8(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_f32_to_u8__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_f32_to_u8__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_f32_to_u8__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_f32_to_u8__optimized(dst, src, count, ditherMode);
        }
#endif
}

#ifdef MA_USE_REFERENCE_CONVERSION_APIS
static MA_INLINE void ma_pcm_f32_to_s16__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint64 i;

    ma_int16* dst_s16 = (ma_int16*)dst;
    const float* src_f32 = (const float*)src;

    float ditherMin = 0;
    float ditherMax = 0;
    if (ditherMode != ma_dither_mode_none) {
        ditherMin = 1.0f / -32768;
        ditherMax = 1.0f /  32767;
    }

    for (i = 0; i < count; i += 1) {
        float x = src_f32[i];
        x = x + ma_dither_f32(ditherMode, ditherMin, ditherMax);
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */

#if 0
        /* The accurate way. */
        x = x + 1;                                  /* -1..1 to 0..2 */
        x = x * 32767.5f;                           /* 0..2 to 0..65535 */
        x = x - 32768.0f;                           /* 0...65535 to -32768..32767 */
#else
        /* The fast way. */
        x = x * 32767.0f;                           /* -1..1 to -32767..32767 */
#endif

        dst_s16[i] = (ma_int16)x;
    }
}
#else
static MA_INLINE void ma_pcm_f32_to_s16__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint64 i;
    ma_uint64 i4;
    ma_uint64 count4;

    ma_int16* dst_s16 = (ma_int16*)dst;
    const float* src_f32 = (const float*)src;

    float ditherMin = 0;
    float ditherMax = 0;
    if (ditherMode != ma_dither_mode_none) {
        ditherMin = 1.0f / -32768;
        ditherMax = 1.0f /  32767;
    }

    /* Unrolled. */
    i = 0;
    count4 = count >> 2;
    for (i4 = 0; i4 < count4; i4 += 1) {
        float d0 = ma_dither_f32(ditherMode, ditherMin, ditherMax);
        float d1 = ma_dither_f32(ditherMode, ditherMin, ditherMax);
        float d2 = ma_dither_f32(ditherMode, ditherMin, ditherMax);
        float d3 = ma_dither_f32(ditherMode, ditherMin, ditherMax);

        float x0 = src_f32[i+0];
        float x1 = src_f32[i+1];
        float x2 = src_f32[i+2];
        float x3 = src_f32[i+3];

        x0 = x0 + d0;
        x1 = x1 + d1;
        x2 = x2 + d2;
        x3 = x3 + d3;

        x0 = ((x0 < -1) ? -1 : ((x0 > 1) ? 1 : x0));
        x1 = ((x1 < -1) ? -1 : ((x1 > 1) ? 1 : x1));
        x2 = ((x2 < -1) ? -1 : ((x2 > 1) ? 1 : x2));
        x3 = ((x3 < -1) ? -1 : ((x3 > 1) ? 1 : x3));

        x0 = x0 * 32767.0f;
        x1 = x1 * 32767.0f;
        x2 = x2 * 32767.0f;
        x3 = x3 * 32767.0f;

        dst_s16[i+0] = (ma_int16)x0;
        dst_s16[i+1] = (ma_int16)x1;
        dst_s16[i+2] = (ma_int16)x2;
        dst_s16[i+3] = (ma_int16)x3;

        i += 4;
    }

    /* Leftover. */
    for (; i < count; i += 1) {
        float x = src_f32[i];
        x = x + ma_dither_f32(ditherMode, ditherMin, ditherMax);
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */
        x = x * 32767.0f;                           /* -1..1 to -32767..32767 */

        dst_s16[i] = (ma_int16)x;
    }
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_f32_to_s16__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint64 i;
    ma_uint64 i8;
    ma_uint64 count8;
    ma_int16* dst_s16;
    const float* src_f32;
    float ditherMin;
    float ditherMax;

    /* Both the input and output buffers need to be aligned to 16 bytes. */
    if ((((ma_uintptr)dst & 15) != 0) || (((ma_uintptr)src & 15) != 0)) {
        ma_pcm_f32_to_s16__optimized(dst, src, count, ditherMode);
        return;
    }

    dst_s16 = (ma_int16*)dst;
    src_f32 = (const float*)src;

    ditherMin = 0;
    ditherMax = 0;
    if (ditherMode != ma_dither_mode_none) {
        ditherMin = 1.0f / -32768;
        ditherMax = 1.0f /  32767;
    }

    i = 0;

    /* SSE2. SSE allows us to output 8 s16's at a time which means our loop is unrolled 8 times. */
    count8 = count >> 3;
    for (i8 = 0; i8 < count8; i8 += 1) {
        __m128 d0;
        __m128 d1;
        __m128 x0;
        __m128 x1;

        if (ditherMode == ma_dither_mode_none) {
            d0 = _mm_set1_ps(0);
            d1 = _mm_set1_ps(0);
        } else if (ditherMode == ma_dither_mode_rectangle) {
            d0 = _mm_set_ps(
                ma_dither_f32_rectangle(ditherMin, ditherMax),
                ma_dither_f32_rectangle(ditherMin, ditherMax),
                ma_dither_f32_rectangle(ditherMin, ditherMax),
                ma_dither_f32_rectangle(ditherMin, ditherMax)
            );
            d1 = _mm_set_ps(
                ma_dither_f32_rectangle(ditherMin, ditherMax),
                ma_dither_f32_rectangle(ditherMin, ditherMax),
                ma_dither_f32_rectangle(ditherMin, ditherMax),
                ma_dither_f32_rectangle(ditherMin, ditherMax)
            );
        } else {
            d0 = _mm_set_ps(
                ma_dither_f32_triangle(ditherMin, ditherMax),
                ma_dither_f32_triangle(ditherMin, ditherMax),
                ma_dither_f32_triangle(ditherMin, ditherMax),
                ma_dither_f32_triangle(ditherMin, ditherMax)
            );
            d1 = _mm_set_ps(
                ma_dither_f32_triangle(ditherMin, ditherMax),
                ma_dither_f32_triangle(ditherMin, ditherMax),
                ma_dither_f32_triangle(ditherMin, ditherMax),
                ma_dither_f32_triangle(ditherMin, ditherMax)
            );
        }

        x0 = *((__m128*)(src_f32 + i) + 0);
        x1 = *((__m128*)(src_f32 + i) + 1);

        x0 = _mm_add_ps(x0, d0);
        x1 = _mm_add_ps(x1, d1);

        x0 = _mm_mul_ps(x0, _mm_set1_ps(32767.0f));
        x1 = _mm_mul_ps(x1, _mm_set1_ps(32767.0f));

        _mm_stream_si128(((__m128i*)(dst_s16 + i)), _mm_packs_epi32(_mm_cvttps_epi32(x0), _mm_cvttps_epi32(x1)));

        i += 8;
    }


    /* Leftover. */
    for (; i < count; i += 1) {
        float x = src_f32[i];
        x = x + ma_dither_f32(ditherMode, ditherMin, ditherMax);
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */
        x = x * 32767.0f;                           /* -1..1 to -32767..32767 */

        dst_s16[i] = (ma_int16)x;
    }
}
#endif  /* SSE2 */

#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_f32_to_s16__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint64 i;
    ma_uint64 i8;
    ma_uint64 count8;
    ma_int16* dst_s16;
    const float* src_f32;
    float ditherMin;
    float ditherMax;

    if (!ma_has_neon()) {
        ma_pcm_f32_to_s16__optimized(dst, src, count, ditherMode);
        return;
    }

    /* Both the input and output buffers need to be aligned to 16 bytes. */
    if ((((ma_uintptr)dst & 15) != 0) || (((ma_uintptr)src & 15) != 0)) {
        ma_pcm_f32_to_s16__optimized(dst, src, count, ditherMode);
        return;
    }

    dst_s16 = (ma_int16*)dst;
    src_f32 = (const float*)src;

    ditherMin = 0;
    ditherMax = 0;
    if (ditherMode != ma_dither_mode_none) {
        ditherMin = 1.0f / -32768;
        ditherMax = 1.0f /  32767;
    }

    i = 0;

    /* NEON. NEON allows us to output 8 s16's at a time which means our loop is unrolled 8 times. */
    count8 = count >> 3;
    for (i8 = 0; i8 < count8; i8 += 1) {
        float32x4_t d0;
        float32x4_t d1;
        float32x4_t x0;
        float32x4_t x1;
        int32x4_t i0;
        int32x4_t i1;

        if (ditherMode == ma_dither_mode_none) {
            d0 = vmovq_n_f32(0);
            d1 = vmovq_n_f32(0);
        } else if (ditherMode == ma_dither_mode_rectangle) {
            float d0v[4];
            float d1v[4];

            d0v[0] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d0v[1] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d0v[2] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d0v[3] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d0 = vld1q_f32(d0v);

            d1v[0] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d1v[1] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d1v[2] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d1v[3] = ma_dither_f32_rectangle(ditherMin, ditherMax);
            d1 = vld1q_f32(d1v);
        } else {
            float d0v[4];
            float d1v[4];

            d0v[0] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d0v[1] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d0v[2] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d0v[3] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d0 = vld1q_f32(d0v);

            d1v[0] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d1v[1] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d1v[2] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d1v[3] = ma_dither_f32_triangle(ditherMin, ditherMax);
            d1 = vld1q_f32(d1v);
        }

        x0 = *((float32x4_t*)(src_f32 + i) + 0);
        x1 = *((float32x4_t*)(src_f32 + i) + 1);

        x0 = vaddq_f32(x0, d0);
        x1 = vaddq_f32(x1, d1);

        x0 = vmulq_n_f32(x0, 32767.0f);
        x1 = vmulq_n_f32(x1, 32767.0f);

        i0 = vcvtq_s32_f32(x0);
        i1 = vcvtq_s32_f32(x1);
        *((int16x8_t*)(dst_s16 + i)) = vcombine_s16(vqmovn_s32(i0), vqmovn_s32(i1));

        i += 8;
    }


    /* Leftover. */
    for (; i < count; i += 1) {
        float x = src_f32[i];
        x = x + ma_dither_f32(ditherMode, ditherMin, ditherMax);
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */
        x = x * 32767.0f;                           /* -1..1 to -32767..32767 */

        dst_s16[i] = (ma_int16)x;
    }
}
#endif  /* Neon */
#endif  /* MA_USE_REFERENCE_CONVERSION_APIS */

MA_API void ma_pcm_f32_to_s16(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_f32_to_s16__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_f32_to_s16__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_f32_to_s16__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_f32_to_s16__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_f32_to_s24__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_uint8* dst_s24 = (ma_uint8*)dst;
    const float* src_f32 = (const float*)src;

    ma_uint64 i;
    for (i = 0; i < count; i += 1) {
        ma_int32 r;
        float x = src_f32[i];
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */

#if 0
        /* The accurate way. */
        x = x + 1;                                  /* -1..1 to 0..2 */
        x = x * 8388607.5f;                         /* 0..2 to 0..16777215 */
        x = x - 8388608.0f;                         /* 0..16777215 to -8388608..8388607 */
#else
        /* The fast way. */
        x = x * 8388607.0f;                         /* -1..1 to -8388607..8388607 */
#endif

        r = (ma_int32)x;
        dst_s24[(i*3)+0] = (ma_uint8)((r & 0x0000FF) >>  0);
        dst_s24[(i*3)+1] = (ma_uint8)((r & 0x00FF00) >>  8);
        dst_s24[(i*3)+2] = (ma_uint8)((r & 0xFF0000) >> 16);
    }

    (void)ditherMode;   /* No dithering for f32 -> s24. */
}

static MA_INLINE void ma_pcm_f32_to_s24__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_s24__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_f32_to_s24__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_s24__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_f32_to_s24__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_s24__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_f32_to_s24(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_f32_to_s24__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_f32_to_s24__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_f32_to_s24__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_f32_to_s24__optimized(dst, src, count, ditherMode);
        }
#endif
}


static MA_INLINE void ma_pcm_f32_to_s32__reference(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_int32* dst_s32 = (ma_int32*)dst;
    const float* src_f32 = (const float*)src;

    ma_uint32 i;
    for (i = 0; i < count; i += 1) {
        double x = src_f32[i];
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));    /* clip */

#if 0
        /* The accurate way. */
        x = x + 1;                                  /* -1..1 to 0..2 */
        x = x * 2147483647.5;                       /* 0..2 to 0..4294967295 */
        x = x - 2147483648.0;                       /* 0...4294967295 to -2147483648..2147483647 */
#else
        /* The fast way. */
        x = x * 2147483647.0;                       /* -1..1 to -2147483647..2147483647 */
#endif

        dst_s32[i] = (ma_int32)x;
    }

    (void)ditherMode;   /* No dithering for f32 -> s32. */
}

static MA_INLINE void ma_pcm_f32_to_s32__optimized(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_s32__reference(dst, src, count, ditherMode);
}

#if defined(MA_SUPPORT_SSE2)
static MA_INLINE void ma_pcm_f32_to_s32__sse2(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_s32__optimized(dst, src, count, ditherMode);
}
#endif
#if defined(MA_SUPPORT_NEON)
static MA_INLINE void ma_pcm_f32_to_s32__neon(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    ma_pcm_f32_to_s32__optimized(dst, src, count, ditherMode);
}
#endif

MA_API void ma_pcm_f32_to_s32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_f32_to_s32__reference(dst, src, count, ditherMode);
#else
    #  if defined(MA_SUPPORT_SSE2)
        if (ma_has_sse2()) {
            ma_pcm_f32_to_s32__sse2(dst, src, count, ditherMode);
        } else
    #elif defined(MA_SUPPORT_NEON)
        if (ma_has_neon()) {
            ma_pcm_f32_to_s32__neon(dst, src, count, ditherMode);
        } else
    #endif
        {
            ma_pcm_f32_to_s32__optimized(dst, src, count, ditherMode);
        }
#endif
}


MA_API void ma_pcm_f32_to_f32(void* dst, const void* src, ma_uint64 count, ma_dither_mode ditherMode)
{
    (void)ditherMode;

    ma_copy_memory_64(dst, src, count * sizeof(float));
}


static void ma_pcm_interleave_f32__reference(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    float* dst_f32 = (float*)dst;
    const float** src_f32 = (const float**)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_f32[iFrame*channels + iChannel] = src_f32[iChannel][iFrame];
        }
    }
}

static void ma_pcm_interleave_f32__optimized(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_interleave_f32__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_interleave_f32(void* dst, const void** src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_interleave_f32__reference(dst, src, frameCount, channels);
#else
    ma_pcm_interleave_f32__optimized(dst, src, frameCount, channels);
#endif
}


static void ma_pcm_deinterleave_f32__reference(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    float** dst_f32 = (float**)dst;
    const float* src_f32 = (const float*)src;

    ma_uint64 iFrame;
    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; iChannel += 1) {
            dst_f32[iChannel][iFrame] = src_f32[iFrame*channels + iChannel];
        }
    }
}

static void ma_pcm_deinterleave_f32__optimized(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
    ma_pcm_deinterleave_f32__reference(dst, src, frameCount, channels);
}

MA_API void ma_pcm_deinterleave_f32(void** dst, const void* src, ma_uint64 frameCount, ma_uint32 channels)
{
#ifdef MA_USE_REFERENCE_CONVERSION_APIS
    ma_pcm_deinterleave_f32__reference(dst, src, frameCount, channels);
#else
    ma_pcm_deinterleave_f32__optimized(dst, src, frameCount, channels);
#endif
}


MA_API void ma_pcm_convert(void* pOut, ma_format formatOut, const void* pIn, ma_format formatIn, ma_uint64 sampleCount, ma_dither_mode ditherMode)
{
    if (formatOut == formatIn) {
        ma_copy_memory_64(pOut, pIn, sampleCount * ma_get_bytes_per_sample(formatOut));
        return;
    }

    switch (formatIn)
    {
        case ma_format_u8:
        {
            switch (formatOut)
            {
                case ma_format_s16: ma_pcm_u8_to_s16(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s24: ma_pcm_u8_to_s24(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s32: ma_pcm_u8_to_s32(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_f32: ma_pcm_u8_to_f32(pOut, pIn, sampleCount, ditherMode); return;
                default: break;
            }
        } break;

        case ma_format_s16:
        {
            switch (formatOut)
            {
                case ma_format_u8:  ma_pcm_s16_to_u8( pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s24: ma_pcm_s16_to_s24(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s32: ma_pcm_s16_to_s32(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_f32: ma_pcm_s16_to_f32(pOut, pIn, sampleCount, ditherMode); return;
                default: break;
            }
        } break;

        case ma_format_s24:
        {
            switch (formatOut)
            {
                case ma_format_u8:  ma_pcm_s24_to_u8( pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s16: ma_pcm_s24_to_s16(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s32: ma_pcm_s24_to_s32(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_f32: ma_pcm_s24_to_f32(pOut, pIn, sampleCount, ditherMode); return;
                default: break;
            }
        } break;

        case ma_format_s32:
        {
            switch (formatOut)
            {
                case ma_format_u8:  ma_pcm_s32_to_u8( pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s16: ma_pcm_s32_to_s16(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s24: ma_pcm_s32_to_s24(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_f32: ma_pcm_s32_to_f32(pOut, pIn, sampleCount, ditherMode); return;
                default: break;
            }
        } break;

        case ma_format_f32:
        {
            switch (formatOut)
            {
                case ma_format_u8:  ma_pcm_f32_to_u8( pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s16: ma_pcm_f32_to_s16(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s24: ma_pcm_f32_to_s24(pOut, pIn, sampleCount, ditherMode); return;
                case ma_format_s32: ma_pcm_f32_to_s32(pOut, pIn, sampleCount, ditherMode); return;
                default: break;
            }
        } break;

        default: break;
    }
}

MA_API void ma_convert_pcm_frames_format(void* pOut, ma_format formatOut, const void* pIn, ma_format formatIn, ma_uint64 frameCount, ma_uint32 channels, ma_dither_mode ditherMode)
{
    ma_pcm_convert(pOut, formatOut, pIn, formatIn, frameCount * channels, ditherMode);
}

MA_API void ma_deinterleave_pcm_frames(ma_format format, ma_uint32 channels, ma_uint64 frameCount, const void* pInterleavedPCMFrames, void** ppDeinterleavedPCMFrames)
{
    if (pInterleavedPCMFrames == NULL || ppDeinterleavedPCMFrames == NULL) {
        return; /* Invalid args. */
    }

    /* For efficiency we do this per format. */
    switch (format) {
        case ma_format_s16:
        {
            const ma_int16* pSrcS16 = (const ma_int16*)pInterleavedPCMFrames;
            ma_uint64 iPCMFrame;
            for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < channels; ++iChannel) {
                    ma_int16* pDstS16 = (ma_int16*)ppDeinterleavedPCMFrames[iChannel];
                    pDstS16[iPCMFrame] = pSrcS16[iPCMFrame*channels+iChannel];
                }
            }
        } break;

        case ma_format_f32:
        {
            const float* pSrcF32 = (const float*)pInterleavedPCMFrames;
            ma_uint64 iPCMFrame;
            for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < channels; ++iChannel) {
                    float* pDstF32 = (float*)ppDeinterleavedPCMFrames[iChannel];
                    pDstF32[iPCMFrame] = pSrcF32[iPCMFrame*channels+iChannel];
                }
            }
        } break;

        default:
        {
            ma_uint32 sampleSizeInBytes = ma_get_bytes_per_sample(format);
            ma_uint64 iPCMFrame;
            for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < channels; ++iChannel) {
                          void* pDst = ma_offset_ptr(ppDeinterleavedPCMFrames[iChannel], iPCMFrame*sampleSizeInBytes);
                    const void* pSrc = ma_offset_ptr(pInterleavedPCMFrames, (iPCMFrame*channels+iChannel)*sampleSizeInBytes);
                    memcpy(pDst, pSrc, sampleSizeInBytes);
                }
            }
        } break;
    }
}

MA_API void ma_interleave_pcm_frames(ma_format format, ma_uint32 channels, ma_uint64 frameCount, const void** ppDeinterleavedPCMFrames, void* pInterleavedPCMFrames)
{
    switch (format)
    {
        case ma_format_s16:
        {
            ma_int16* pDstS16 = (ma_int16*)pInterleavedPCMFrames;
            ma_uint64 iPCMFrame;
            for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < channels; ++iChannel) {
                    const ma_int16* pSrcS16 = (const ma_int16*)ppDeinterleavedPCMFrames[iChannel];
                    pDstS16[iPCMFrame*channels+iChannel] = pSrcS16[iPCMFrame];
                }
            }
        } break;

        case ma_format_f32:
        {
            float* pDstF32 = (float*)pInterleavedPCMFrames;
            ma_uint64 iPCMFrame;
            for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < channels; ++iChannel) {
                    const float* pSrcF32 = (const float*)ppDeinterleavedPCMFrames[iChannel];
                    pDstF32[iPCMFrame*channels+iChannel] = pSrcF32[iPCMFrame];
                }
            }
        } break;

        default:
        {
            ma_uint32 sampleSizeInBytes = ma_get_bytes_per_sample(format);
            ma_uint64 iPCMFrame;
            for (iPCMFrame = 0; iPCMFrame < frameCount; ++iPCMFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < channels; ++iChannel) {
                          void* pDst = ma_offset_ptr(pInterleavedPCMFrames, (iPCMFrame*channels+iChannel)*sampleSizeInBytes);
                    const void* pSrc = ma_offset_ptr(ppDeinterleavedPCMFrames[iChannel], iPCMFrame*sampleSizeInBytes);
                    memcpy(pDst, pSrc, sampleSizeInBytes);
                }
            }
        } break;
    }
}


/**************************************************************************************************************************************************************

Biquad Filter

**************************************************************************************************************************************************************/
#ifndef MA_BIQUAD_FIXED_POINT_SHIFT
#define MA_BIQUAD_FIXED_POINT_SHIFT 14
#endif

static ma_int32 ma_biquad_float_to_fp(double x)
{
    return (ma_int32)(x * (1 << MA_BIQUAD_FIXED_POINT_SHIFT));
}

MA_API ma_biquad_config ma_biquad_config_init(ma_format format, ma_uint32 channels, double b0, double b1, double b2, double a0, double a1, double a2)
{
    ma_biquad_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.b0 = b0;
    config.b1 = b1;
    config.b2 = b2;
    config.a0 = a0;
    config.a1 = a1;
    config.a2 = a2;

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t r1Offset;
    size_t r2Offset;
} ma_biquad_heap_layout;

static ma_result ma_biquad_get_heap_layout(const ma_biquad_config* pConfig, ma_biquad_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* R0 */
    pHeapLayout->r1Offset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += sizeof(ma_biquad_coefficient) * pConfig->channels;

    /* R1 */
    pHeapLayout->r2Offset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += sizeof(ma_biquad_coefficient) * pConfig->channels;

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_biquad_get_heap_size(const ma_biquad_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_biquad_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_biquad_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_biquad_init_preallocated(const ma_biquad_config* pConfig, void* pHeap, ma_biquad* pBQ)
{
    ma_result result;
    ma_biquad_heap_layout heapLayout;

    if (pBQ == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pBQ);

    result = ma_biquad_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pBQ->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pBQ->pR1 = (ma_biquad_coefficient*)ma_offset_ptr(pHeap, heapLayout.r1Offset);
    pBQ->pR2 = (ma_biquad_coefficient*)ma_offset_ptr(pHeap, heapLayout.r2Offset);

    return ma_biquad_reinit(pConfig, pBQ);
}

MA_API ma_result ma_biquad_init(const ma_biquad_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_biquad* pBQ)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_biquad_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_biquad_init_preallocated(pConfig, pHeap, pBQ);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pBQ->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_biquad_uninit(ma_biquad* pBQ, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pBQ == NULL) {
        return;
    }

    if (pBQ->_ownsHeap) {
        ma_free(pBQ->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_biquad_reinit(const ma_biquad_config* pConfig, ma_biquad* pBQ)
{
    if (pBQ == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->a0 == 0) {
        return MA_INVALID_ARGS; /* Division by zero. */
    }

    /* Only supporting f32 and s16. */
    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    /* The format cannot be changed after initialization. */
    if (pBQ->format != ma_format_unknown && pBQ->format != pConfig->format) {
        return MA_INVALID_OPERATION;
    }

    /* The channel count cannot be changed after initialization. */
    if (pBQ->channels != 0 && pBQ->channels != pConfig->channels) {
        return MA_INVALID_OPERATION;
    }


    pBQ->format   = pConfig->format;
    pBQ->channels = pConfig->channels;

    /* Normalize. */
    if (pConfig->format == ma_format_f32) {
        pBQ->b0.f32 = (float)(pConfig->b0 / pConfig->a0);
        pBQ->b1.f32 = (float)(pConfig->b1 / pConfig->a0);
        pBQ->b2.f32 = (float)(pConfig->b2 / pConfig->a0);
        pBQ->a1.f32 = (float)(pConfig->a1 / pConfig->a0);
        pBQ->a2.f32 = (float)(pConfig->a2 / pConfig->a0);
    } else {
        pBQ->b0.s32 = ma_biquad_float_to_fp(pConfig->b0 / pConfig->a0);
        pBQ->b1.s32 = ma_biquad_float_to_fp(pConfig->b1 / pConfig->a0);
        pBQ->b2.s32 = ma_biquad_float_to_fp(pConfig->b2 / pConfig->a0);
        pBQ->a1.s32 = ma_biquad_float_to_fp(pConfig->a1 / pConfig->a0);
        pBQ->a2.s32 = ma_biquad_float_to_fp(pConfig->a2 / pConfig->a0);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_biquad_clear_cache(ma_biquad* pBQ)
{
    if (pBQ == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pBQ->format == ma_format_f32) {
        pBQ->pR1->f32 = 0;
        pBQ->pR2->f32 = 0;
    } else {
        pBQ->pR1->s32 = 0;
        pBQ->pR2->s32 = 0;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_biquad_process_pcm_frame_f32__direct_form_2_transposed(ma_biquad* pBQ, float* pY, const float* pX)
{
    ma_uint32 c;
    const ma_uint32 channels = pBQ->channels;
    const float b0 = pBQ->b0.f32;
    const float b1 = pBQ->b1.f32;
    const float b2 = pBQ->b2.f32;
    const float a1 = pBQ->a1.f32;
    const float a2 = pBQ->a2.f32;

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        float r1 = pBQ->pR1[c].f32;
        float r2 = pBQ->pR2[c].f32;
        float x  = pX[c];
        float y;

        y  = b0*x        + r1;
        r1 = b1*x - a1*y + r2;
        r2 = b2*x - a2*y;

        pY[c]           = y;
        pBQ->pR1[c].f32 = r1;
        pBQ->pR2[c].f32 = r2;
    }
}

static MA_INLINE void ma_biquad_process_pcm_frame_f32(ma_biquad* pBQ, float* pY, const float* pX)
{
    ma_biquad_process_pcm_frame_f32__direct_form_2_transposed(pBQ, pY, pX);
}

static MA_INLINE void ma_biquad_process_pcm_frame_s16__direct_form_2_transposed(ma_biquad* pBQ, ma_int16* pY, const ma_int16* pX)
{
    ma_uint32 c;
    const ma_uint32 channels = pBQ->channels;
    const ma_int32 b0 = pBQ->b0.s32;
    const ma_int32 b1 = pBQ->b1.s32;
    const ma_int32 b2 = pBQ->b2.s32;
    const ma_int32 a1 = pBQ->a1.s32;
    const ma_int32 a2 = pBQ->a2.s32;

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        ma_int32 r1 = pBQ->pR1[c].s32;
        ma_int32 r2 = pBQ->pR2[c].s32;
        ma_int32 x  = pX[c];
        ma_int32 y;

        y  = (b0*x        + r1) >> MA_BIQUAD_FIXED_POINT_SHIFT;
        r1 = (b1*x - a1*y + r2);
        r2 = (b2*x - a2*y);

        pY[c]           = (ma_int16)ma_clamp(y, -32768, 32767);
        pBQ->pR1[c].s32 = r1;
        pBQ->pR2[c].s32 = r2;
    }
}

static MA_INLINE void ma_biquad_process_pcm_frame_s16(ma_biquad* pBQ, ma_int16* pY, const ma_int16* pX)
{
    ma_biquad_process_pcm_frame_s16__direct_form_2_transposed(pBQ, pY, pX);
}

MA_API ma_result ma_biquad_process_pcm_frames(ma_biquad* pBQ, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_uint32 n;

    if (pBQ == NULL || pFramesOut == NULL || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Note that the logic below needs to support in-place filtering. That is, it must support the case where pFramesOut and pFramesIn are the same. */

    if (pBQ->format == ma_format_f32) {
        /* */ float* pY = (      float*)pFramesOut;
        const float* pX = (const float*)pFramesIn;

        for (n = 0; n < frameCount; n += 1) {
            ma_biquad_process_pcm_frame_f32__direct_form_2_transposed(pBQ, pY, pX);
            pY += pBQ->channels;
            pX += pBQ->channels;
        }
    } else if (pBQ->format == ma_format_s16) {
        /* */ ma_int16* pY = (      ma_int16*)pFramesOut;
        const ma_int16* pX = (const ma_int16*)pFramesIn;

        for (n = 0; n < frameCount; n += 1) {
            ma_biquad_process_pcm_frame_s16__direct_form_2_transposed(pBQ, pY, pX);
            pY += pBQ->channels;
            pX += pBQ->channels;
        }
    } else {
        MA_ASSERT(MA_FALSE);
        return MA_INVALID_ARGS; /* Format not supported. Should never hit this because it's checked in ma_biquad_init() and ma_biquad_reinit(). */
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_biquad_get_latency(const ma_biquad* pBQ)
{
    if (pBQ == NULL) {
        return 0;
    }

    return 2;
}


/**************************************************************************************************************************************************************

Low-Pass Filter

**************************************************************************************************************************************************************/
MA_API ma_lpf1_config ma_lpf1_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency)
{
    ma_lpf1_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.sampleRate = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.q = 0.5;

    return config;
}

MA_API ma_lpf2_config ma_lpf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, double q)
{
    ma_lpf2_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.sampleRate = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.q = q;

    /* Q cannot be 0 or else it'll result in a division by 0. In this case just default to 0.707107. */
    if (config.q == 0) {
        config.q = 0.707107;
    }

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t r1Offset;
} ma_lpf1_heap_layout;

static ma_result ma_lpf1_get_heap_layout(const ma_lpf1_config* pConfig, ma_lpf1_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* R1 */
    pHeapLayout->r1Offset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += sizeof(ma_biquad_coefficient) * pConfig->channels;

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_lpf1_get_heap_size(const ma_lpf1_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_lpf1_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_lpf1_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_lpf1_init_preallocated(const ma_lpf1_config* pConfig, void* pHeap, ma_lpf1* pLPF)
{
    ma_result result;
    ma_lpf1_heap_layout heapLayout;

    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pLPF);

    result = ma_lpf1_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pLPF->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pLPF->pR1 = (ma_biquad_coefficient*)ma_offset_ptr(pHeap, heapLayout.r1Offset);

    return ma_lpf1_reinit(pConfig, pLPF);
}

MA_API ma_result ma_lpf1_init(const ma_lpf1_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_lpf1* pLPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_lpf1_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_lpf1_init_preallocated(pConfig, pHeap, pLPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pLPF->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_lpf1_uninit(ma_lpf1* pLPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pLPF == NULL) {
        return;
    }

    if (pLPF->_ownsHeap) {
        ma_free(pLPF->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_lpf1_reinit(const ma_lpf1_config* pConfig, ma_lpf1* pLPF)
{
    double a;

    if (pLPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Only supporting f32 and s16. */
    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    /* The format cannot be changed after initialization. */
    if (pLPF->format != ma_format_unknown && pLPF->format != pConfig->format) {
        return MA_INVALID_OPERATION;
    }

    /* The channel count cannot be changed after initialization. */
    if (pLPF->channels != 0 && pLPF->channels != pConfig->channels) {
        return MA_INVALID_OPERATION;
    }

    pLPF->format   = pConfig->format;
    pLPF->channels = pConfig->channels;

    a = ma_expd(-2 * MA_PI_D * pConfig->cutoffFrequency / pConfig->sampleRate);
    if (pConfig->format == ma_format_f32) {
        pLPF->a.f32 = (float)a;
    } else {
        pLPF->a.s32 = ma_biquad_float_to_fp(a);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_lpf1_clear_cache(ma_lpf1* pLPF)
{
    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pLPF->format == ma_format_f32) {
        pLPF->a.f32 = 0;
    } else {
        pLPF->a.s32 = 0;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_lpf1_process_pcm_frame_f32(ma_lpf1* pLPF, float* pY, const float* pX)
{
    ma_uint32 c;
    const ma_uint32 channels = pLPF->channels;
    const float a = pLPF->a.f32;
    const float b = 1 - a;

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        float r1 = pLPF->pR1[c].f32;
        float x  = pX[c];
        float y;

        y = b*x + a*r1;

        pY[c]           = y;
        pLPF->pR1[c].f32 = y;
    }
}

static MA_INLINE void ma_lpf1_process_pcm_frame_s16(ma_lpf1* pLPF, ma_int16* pY, const ma_int16* pX)
{
    ma_uint32 c;
    const ma_uint32 channels = pLPF->channels;
    const ma_int32 a = pLPF->a.s32;
    const ma_int32 b = ((1 << MA_BIQUAD_FIXED_POINT_SHIFT) - a);

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        ma_int32 r1 = pLPF->pR1[c].s32;
        ma_int32 x  = pX[c];
        ma_int32 y;

        y = (b*x + a*r1) >> MA_BIQUAD_FIXED_POINT_SHIFT;

        pY[c]            = (ma_int16)y;
        pLPF->pR1[c].s32 = (ma_int32)y;
    }
}

MA_API ma_result ma_lpf1_process_pcm_frames(ma_lpf1* pLPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_uint32 n;

    if (pLPF == NULL || pFramesOut == NULL || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Note that the logic below needs to support in-place filtering. That is, it must support the case where pFramesOut and pFramesIn are the same. */

    if (pLPF->format == ma_format_f32) {
        /* */ float* pY = (      float*)pFramesOut;
        const float* pX = (const float*)pFramesIn;

        for (n = 0; n < frameCount; n += 1) {
            ma_lpf1_process_pcm_frame_f32(pLPF, pY, pX);
            pY += pLPF->channels;
            pX += pLPF->channels;
        }
    } else if (pLPF->format == ma_format_s16) {
        /* */ ma_int16* pY = (      ma_int16*)pFramesOut;
        const ma_int16* pX = (const ma_int16*)pFramesIn;

        for (n = 0; n < frameCount; n += 1) {
            ma_lpf1_process_pcm_frame_s16(pLPF, pY, pX);
            pY += pLPF->channels;
            pX += pLPF->channels;
        }
    } else {
        MA_ASSERT(MA_FALSE);
        return MA_INVALID_ARGS; /* Format not supported. Should never hit this because it's checked in ma_biquad_init() and ma_biquad_reinit(). */
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_lpf1_get_latency(const ma_lpf1* pLPF)
{
    if (pLPF == NULL) {
        return 0;
    }

    return 1;
}


static MA_INLINE ma_biquad_config ma_lpf2__get_biquad_config(const ma_lpf2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double q;
    double w;
    double s;
    double c;
    double a;

    MA_ASSERT(pConfig != NULL);

    q = pConfig->q;
    w = 2 * MA_PI_D * pConfig->cutoffFrequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    a = s / (2*q);

    bqConfig.b0 = (1 - c) / 2;
    bqConfig.b1 =  1 - c;
    bqConfig.b2 = (1 - c) / 2;
    bqConfig.a0 =  1 + a;
    bqConfig.a1 = -2 * c;
    bqConfig.a2 =  1 - a;

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_lpf2_get_heap_size(const ma_lpf2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_lpf2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_lpf2_init_preallocated(const ma_lpf2_config* pConfig, void* pHeap, ma_lpf2* pLPF)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pLPF);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_lpf2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pLPF->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_lpf2_init(const ma_lpf2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_lpf2* pLPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_lpf2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_lpf2_init_preallocated(pConfig, pHeap, pLPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pLPF->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_lpf2_uninit(ma_lpf2* pLPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pLPF == NULL) {
        return;
    }

    ma_biquad_uninit(&pLPF->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_lpf2_reinit(const ma_lpf2_config* pConfig, ma_lpf2* pLPF)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pLPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_lpf2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pLPF->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_lpf2_clear_cache(ma_lpf2* pLPF)
{
    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_biquad_clear_cache(&pLPF->bq);

    return MA_SUCCESS;
}

static MA_INLINE void ma_lpf2_process_pcm_frame_s16(ma_lpf2* pLPF, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pLPF->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_lpf2_process_pcm_frame_f32(ma_lpf2* pLPF, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pLPF->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_lpf2_process_pcm_frames(ma_lpf2* pLPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pLPF->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_lpf2_get_latency(const ma_lpf2* pLPF)
{
    if (pLPF == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pLPF->bq);
}


MA_API ma_lpf_config ma_lpf_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order)
{
    ma_lpf_config config;

    MA_ZERO_OBJECT(&config);
    config.format          = format;
    config.channels        = channels;
    config.sampleRate      = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.order           = ma_min(order, MA_MAX_FILTER_ORDER);

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t lpf1Offset;
    size_t lpf2Offset;  /* Offset of the first second order filter. Subsequent filters will come straight after, and will each have the same heap size. */
} ma_lpf_heap_layout;

static void ma_lpf_calculate_sub_lpf_counts(ma_uint32 order, ma_uint32* pLPF1Count, ma_uint32* pLPF2Count)
{
    MA_ASSERT(pLPF1Count != NULL);
    MA_ASSERT(pLPF2Count != NULL);

    *pLPF1Count = order % 2;
    *pLPF2Count = order / 2;
}

static ma_result ma_lpf_get_heap_layout(const ma_lpf_config* pConfig, ma_lpf_heap_layout* pHeapLayout)
{
    ma_result result;
    ma_uint32 lpf1Count;
    ma_uint32 lpf2Count;
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->order > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    ma_lpf_calculate_sub_lpf_counts(pConfig->order, &lpf1Count, &lpf2Count);

    pHeapLayout->sizeInBytes = 0;

    /* LPF 1 */
    pHeapLayout->lpf1Offset = pHeapLayout->sizeInBytes;
    for (ilpf1 = 0; ilpf1 < lpf1Count; ilpf1 += 1) {
        size_t lpf1HeapSizeInBytes;
        ma_lpf1_config lpf1Config = ma_lpf1_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency);

        result = ma_lpf1_get_heap_size(&lpf1Config, &lpf1HeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += sizeof(ma_lpf1) + lpf1HeapSizeInBytes;
    }

    /* LPF 2*/
    pHeapLayout->lpf2Offset = pHeapLayout->sizeInBytes;
    for (ilpf2 = 0; ilpf2 < lpf2Count; ilpf2 += 1) {
        size_t lpf2HeapSizeInBytes;
        ma_lpf2_config lpf2Config = ma_lpf2_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency, 0.707107);   /* <-- The "q" parameter does not matter for the purpose of calculating the heap size. */

        result = ma_lpf2_get_heap_size(&lpf2Config, &lpf2HeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += sizeof(ma_lpf2) + lpf2HeapSizeInBytes;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

static ma_result ma_lpf_reinit__internal(const ma_lpf_config* pConfig, void* pHeap, ma_lpf* pLPF, ma_bool32 isNew)
{
    ma_result result;
    ma_uint32 lpf1Count;
    ma_uint32 lpf2Count;
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;
    ma_lpf_heap_layout heapLayout;  /* Only used if isNew is true. */

    if (pLPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Only supporting f32 and s16. */
    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    /* The format cannot be changed after initialization. */
    if (pLPF->format != ma_format_unknown && pLPF->format != pConfig->format) {
        return MA_INVALID_OPERATION;
    }

    /* The channel count cannot be changed after initialization. */
    if (pLPF->channels != 0 && pLPF->channels != pConfig->channels) {
        return MA_INVALID_OPERATION;
    }

    if (pConfig->order > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    ma_lpf_calculate_sub_lpf_counts(pConfig->order, &lpf1Count, &lpf2Count);

    /* The filter order can't change between reinits. */
    if (!isNew) {
        if (pLPF->lpf1Count != lpf1Count || pLPF->lpf2Count != lpf2Count) {
            return MA_INVALID_OPERATION;
        }
    }

    if (isNew) {
        result = ma_lpf_get_heap_layout(pConfig, &heapLayout);
        if (result != MA_SUCCESS) {
            return result;
        }

        pLPF->_pHeap = pHeap;
        MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

        pLPF->pLPF1 = (ma_lpf1*)ma_offset_ptr(pHeap, heapLayout.lpf1Offset);
        pLPF->pLPF2 = (ma_lpf2*)ma_offset_ptr(pHeap, heapLayout.lpf2Offset);
    } else {
        MA_ZERO_OBJECT(&heapLayout);    /* To silence a compiler warning. */
    }

    for (ilpf1 = 0; ilpf1 < lpf1Count; ilpf1 += 1) {
        ma_lpf1_config lpf1Config = ma_lpf1_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency);

        if (isNew) {
            size_t lpf1HeapSizeInBytes;

            result = ma_lpf1_get_heap_size(&lpf1Config, &lpf1HeapSizeInBytes);
            if (result == MA_SUCCESS) {
                result = ma_lpf1_init_preallocated(&lpf1Config, ma_offset_ptr(pHeap, heapLayout.lpf1Offset + (sizeof(ma_lpf1) * lpf1Count) + (ilpf1 * lpf1HeapSizeInBytes)), &pLPF->pLPF1[ilpf1]);
            }
        } else {
            result = ma_lpf1_reinit(&lpf1Config, &pLPF->pLPF1[ilpf1]);
        }

        if (result != MA_SUCCESS) {
            ma_uint32 jlpf1;

            for (jlpf1 = 0; jlpf1 < ilpf1; jlpf1 += 1) {
                ma_lpf1_uninit(&pLPF->pLPF1[jlpf1], NULL);  /* No need for allocation callbacks here since we used a preallocated heap allocation. */
            }

            return result;
        }
    }

    for (ilpf2 = 0; ilpf2 < lpf2Count; ilpf2 += 1) {
        ma_lpf2_config lpf2Config;
        double q;
        double a;

        /* Tempting to use 0.707107, but won't result in a Butterworth filter if the order is > 2. */
        if (lpf1Count == 1) {
            a = (1 + ilpf2*1) * (MA_PI_D/(pConfig->order*1));   /* Odd order. */
        } else {
            a = (1 + ilpf2*2) * (MA_PI_D/(pConfig->order*2));   /* Even order. */
        }
        q = 1 / (2*ma_cosd(a));

        lpf2Config = ma_lpf2_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency, q);

        if (isNew) {
            size_t lpf2HeapSizeInBytes;

            result = ma_lpf2_get_heap_size(&lpf2Config, &lpf2HeapSizeInBytes);
            if (result == MA_SUCCESS) {
                result = ma_lpf2_init_preallocated(&lpf2Config, ma_offset_ptr(pHeap, heapLayout.lpf2Offset + (sizeof(ma_lpf2) * lpf2Count) + (ilpf2 * lpf2HeapSizeInBytes)), &pLPF->pLPF2[ilpf2]);
            }
        } else {
            result = ma_lpf2_reinit(&lpf2Config, &pLPF->pLPF2[ilpf2]);
        }

        if (result != MA_SUCCESS) {
            ma_uint32 jlpf1;
            ma_uint32 jlpf2;

            for (jlpf1 = 0; jlpf1 < lpf1Count; jlpf1 += 1) {
                ma_lpf1_uninit(&pLPF->pLPF1[jlpf1], NULL);  /* No need for allocation callbacks here since we used a preallocated heap allocation. */
            }

            for (jlpf2 = 0; jlpf2 < ilpf2; jlpf2 += 1) {
                ma_lpf2_uninit(&pLPF->pLPF2[jlpf2], NULL);  /* No need for allocation callbacks here since we used a preallocated heap allocation. */
            }

            return result;
        }
    }

    pLPF->lpf1Count  = lpf1Count;
    pLPF->lpf2Count  = lpf2Count;
    pLPF->format     = pConfig->format;
    pLPF->channels   = pConfig->channels;
    pLPF->sampleRate = pConfig->sampleRate;

    return MA_SUCCESS;
}

MA_API ma_result ma_lpf_get_heap_size(const ma_lpf_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_lpf_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_lpf_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return result;
}

MA_API ma_result ma_lpf_init_preallocated(const ma_lpf_config* pConfig, void* pHeap, ma_lpf* pLPF)
{
    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pLPF);

    return ma_lpf_reinit__internal(pConfig, pHeap, pLPF, /*isNew*/MA_TRUE);
}

MA_API ma_result ma_lpf_init(const ma_lpf_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_lpf* pLPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_lpf_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_lpf_init_preallocated(pConfig, pHeap, pLPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pLPF->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_lpf_uninit(ma_lpf* pLPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;

    if (pLPF == NULL) {
        return;
    }

    for (ilpf1 = 0; ilpf1 < pLPF->lpf1Count; ilpf1 += 1) {
        ma_lpf1_uninit(&pLPF->pLPF1[ilpf1], pAllocationCallbacks);
    }

    for (ilpf2 = 0; ilpf2 < pLPF->lpf2Count; ilpf2 += 1) {
        ma_lpf2_uninit(&pLPF->pLPF2[ilpf2], pAllocationCallbacks);
    }

    if (pLPF->_ownsHeap) {
        ma_free(pLPF->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_lpf_reinit(const ma_lpf_config* pConfig, ma_lpf* pLPF)
{
    return ma_lpf_reinit__internal(pConfig, NULL, pLPF, /*isNew*/MA_FALSE);
}

MA_API ma_result ma_lpf_clear_cache(ma_lpf* pLPF)
{
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;

    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    for (ilpf1 = 0; ilpf1 < pLPF->lpf1Count; ilpf1 += 1) {
        ma_lpf1_clear_cache(&pLPF->pLPF1[ilpf1]);
    }

    for (ilpf2 = 0; ilpf2 < pLPF->lpf2Count; ilpf2 += 1) {
        ma_lpf2_clear_cache(&pLPF->pLPF2[ilpf2]);
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_lpf_process_pcm_frame_f32(ma_lpf* pLPF, float* pY, const void* pX)
{
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;

    MA_ASSERT(pLPF->format == ma_format_f32);

    MA_MOVE_MEMORY(pY, pX, ma_get_bytes_per_frame(pLPF->format, pLPF->channels));

    for (ilpf1 = 0; ilpf1 < pLPF->lpf1Count; ilpf1 += 1) {
        ma_lpf1_process_pcm_frame_f32(&pLPF->pLPF1[ilpf1], pY, pY);
    }

    for (ilpf2 = 0; ilpf2 < pLPF->lpf2Count; ilpf2 += 1) {
        ma_lpf2_process_pcm_frame_f32(&pLPF->pLPF2[ilpf2], pY, pY);
    }
}

static MA_INLINE void ma_lpf_process_pcm_frame_s16(ma_lpf* pLPF, ma_int16* pY, const ma_int16* pX)
{
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;

    MA_ASSERT(pLPF->format == ma_format_s16);

    MA_MOVE_MEMORY(pY, pX, ma_get_bytes_per_frame(pLPF->format, pLPF->channels));

    for (ilpf1 = 0; ilpf1 < pLPF->lpf1Count; ilpf1 += 1) {
        ma_lpf1_process_pcm_frame_s16(&pLPF->pLPF1[ilpf1], pY, pY);
    }

    for (ilpf2 = 0; ilpf2 < pLPF->lpf2Count; ilpf2 += 1) {
        ma_lpf2_process_pcm_frame_s16(&pLPF->pLPF2[ilpf2], pY, pY);
    }
}

MA_API ma_result ma_lpf_process_pcm_frames(ma_lpf* pLPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_result result;
    ma_uint32 ilpf1;
    ma_uint32 ilpf2;

    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Faster path for in-place. */
    if (pFramesOut == pFramesIn) {
        for (ilpf1 = 0; ilpf1 < pLPF->lpf1Count; ilpf1 += 1) {
            result = ma_lpf1_process_pcm_frames(&pLPF->pLPF1[ilpf1], pFramesOut, pFramesOut, frameCount);
            if (result != MA_SUCCESS) {
                return result;
            }
        }

        for (ilpf2 = 0; ilpf2 < pLPF->lpf2Count; ilpf2 += 1) {
            result = ma_lpf2_process_pcm_frames(&pLPF->pLPF2[ilpf2], pFramesOut, pFramesOut, frameCount);
            if (result != MA_SUCCESS) {
                return result;
            }
        }
    }

    /* Slightly slower path for copying. */
    if (pFramesOut != pFramesIn) {
        ma_uint32 iFrame;

        /*  */ if (pLPF->format == ma_format_f32) {
            /* */ float* pFramesOutF32 = (      float*)pFramesOut;
            const float* pFramesInF32  = (const float*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_lpf_process_pcm_frame_f32(pLPF, pFramesOutF32, pFramesInF32);
                pFramesOutF32 += pLPF->channels;
                pFramesInF32  += pLPF->channels;
            }
        } else if (pLPF->format == ma_format_s16) {
            /* */ ma_int16* pFramesOutS16 = (      ma_int16*)pFramesOut;
            const ma_int16* pFramesInS16  = (const ma_int16*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_lpf_process_pcm_frame_s16(pLPF, pFramesOutS16, pFramesInS16);
                pFramesOutS16 += pLPF->channels;
                pFramesInS16  += pLPF->channels;
            }
        } else {
            MA_ASSERT(MA_FALSE);
            return MA_INVALID_OPERATION;    /* Should never hit this. */
        }
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_lpf_get_latency(const ma_lpf* pLPF)
{
    if (pLPF == NULL) {
        return 0;
    }

    return pLPF->lpf2Count*2 + pLPF->lpf1Count;
}


/**************************************************************************************************************************************************************

High-Pass Filtering

**************************************************************************************************************************************************************/
MA_API ma_hpf1_config ma_hpf1_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency)
{
    ma_hpf1_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.sampleRate = sampleRate;
    config.cutoffFrequency = cutoffFrequency;

    return config;
}

MA_API ma_hpf2_config ma_hpf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, double q)
{
    ma_hpf2_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.sampleRate = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.q = q;

    /* Q cannot be 0 or else it'll result in a division by 0. In this case just default to 0.707107. */
    if (config.q == 0) {
        config.q = 0.707107;
    }

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t r1Offset;
} ma_hpf1_heap_layout;

static ma_result ma_hpf1_get_heap_layout(const ma_hpf1_config* pConfig, ma_hpf1_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* R1 */
    pHeapLayout->r1Offset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += sizeof(ma_biquad_coefficient) * pConfig->channels;

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_hpf1_get_heap_size(const ma_hpf1_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_hpf1_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_hpf1_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_hpf1_init_preallocated(const ma_hpf1_config* pConfig, void* pHeap, ma_hpf1* pLPF)
{
    ma_result result;
    ma_hpf1_heap_layout heapLayout;

    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pLPF);

    result = ma_hpf1_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pLPF->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pLPF->pR1 = (ma_biquad_coefficient*)ma_offset_ptr(pHeap, heapLayout.r1Offset);

    return ma_hpf1_reinit(pConfig, pLPF);
}

MA_API ma_result ma_hpf1_init(const ma_hpf1_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_hpf1* pLPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_hpf1_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_hpf1_init_preallocated(pConfig, pHeap, pLPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pLPF->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_hpf1_uninit(ma_hpf1* pHPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pHPF == NULL) {
        return;
    }

    if (pHPF->_ownsHeap) {
        ma_free(pHPF->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_hpf1_reinit(const ma_hpf1_config* pConfig, ma_hpf1* pHPF)
{
    double a;

    if (pHPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Only supporting f32 and s16. */
    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    /* The format cannot be changed after initialization. */
    if (pHPF->format != ma_format_unknown && pHPF->format != pConfig->format) {
        return MA_INVALID_OPERATION;
    }

    /* The channel count cannot be changed after initialization. */
    if (pHPF->channels != 0 && pHPF->channels != pConfig->channels) {
        return MA_INVALID_OPERATION;
    }

    pHPF->format   = pConfig->format;
    pHPF->channels = pConfig->channels;

    a = ma_expd(-2 * MA_PI_D * pConfig->cutoffFrequency / pConfig->sampleRate);
    if (pConfig->format == ma_format_f32) {
        pHPF->a.f32 = (float)a;
    } else {
        pHPF->a.s32 = ma_biquad_float_to_fp(a);
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_hpf1_process_pcm_frame_f32(ma_hpf1* pHPF, float* pY, const float* pX)
{
    ma_uint32 c;
    const ma_uint32 channels = pHPF->channels;
    const float a = 1 - pHPF->a.f32;
    const float b = 1 - a;

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        float r1 = pHPF->pR1[c].f32;
        float x  = pX[c];
        float y;

        y = b*x - a*r1;

        pY[c]            = y;
        pHPF->pR1[c].f32 = y;
    }
}

static MA_INLINE void ma_hpf1_process_pcm_frame_s16(ma_hpf1* pHPF, ma_int16* pY, const ma_int16* pX)
{
    ma_uint32 c;
    const ma_uint32 channels = pHPF->channels;
    const ma_int32 a = ((1 << MA_BIQUAD_FIXED_POINT_SHIFT) - pHPF->a.s32);
    const ma_int32 b = ((1 << MA_BIQUAD_FIXED_POINT_SHIFT) - a);

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        ma_int32 r1 = pHPF->pR1[c].s32;
        ma_int32 x  = pX[c];
        ma_int32 y;

        y = (b*x - a*r1) >> MA_BIQUAD_FIXED_POINT_SHIFT;

        pY[c]            = (ma_int16)y;
        pHPF->pR1[c].s32 = (ma_int32)y;
    }
}

MA_API ma_result ma_hpf1_process_pcm_frames(ma_hpf1* pHPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_uint32 n;

    if (pHPF == NULL || pFramesOut == NULL || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Note that the logic below needs to support in-place filtering. That is, it must support the case where pFramesOut and pFramesIn are the same. */

    if (pHPF->format == ma_format_f32) {
        /* */ float* pY = (      float*)pFramesOut;
        const float* pX = (const float*)pFramesIn;

        for (n = 0; n < frameCount; n += 1) {
            ma_hpf1_process_pcm_frame_f32(pHPF, pY, pX);
            pY += pHPF->channels;
            pX += pHPF->channels;
        }
    } else if (pHPF->format == ma_format_s16) {
        /* */ ma_int16* pY = (      ma_int16*)pFramesOut;
        const ma_int16* pX = (const ma_int16*)pFramesIn;

        for (n = 0; n < frameCount; n += 1) {
            ma_hpf1_process_pcm_frame_s16(pHPF, pY, pX);
            pY += pHPF->channels;
            pX += pHPF->channels;
        }
    } else {
        MA_ASSERT(MA_FALSE);
        return MA_INVALID_ARGS; /* Format not supported. Should never hit this because it's checked in ma_biquad_init() and ma_biquad_reinit(). */
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_hpf1_get_latency(const ma_hpf1* pHPF)
{
    if (pHPF == NULL) {
        return 0;
    }

    return 1;
}


static MA_INLINE ma_biquad_config ma_hpf2__get_biquad_config(const ma_hpf2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double q;
    double w;
    double s;
    double c;
    double a;

    MA_ASSERT(pConfig != NULL);

    q = pConfig->q;
    w = 2 * MA_PI_D * pConfig->cutoffFrequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    a = s / (2*q);

    bqConfig.b0 =  (1 + c) / 2;
    bqConfig.b1 = -(1 + c);
    bqConfig.b2 =  (1 + c) / 2;
    bqConfig.a0 =   1 + a;
    bqConfig.a1 =  -2 * c;
    bqConfig.a2 =   1 - a;

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_hpf2_get_heap_size(const ma_hpf2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_hpf2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_hpf2_init_preallocated(const ma_hpf2_config* pConfig, void* pHeap, ma_hpf2* pHPF)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pHPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pHPF);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_hpf2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pHPF->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_hpf2_init(const ma_hpf2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_hpf2* pHPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_hpf2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_hpf2_init_preallocated(pConfig, pHeap, pHPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pHPF->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_hpf2_uninit(ma_hpf2* pHPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pHPF == NULL) {
        return;
    }

    ma_biquad_uninit(&pHPF->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_hpf2_reinit(const ma_hpf2_config* pConfig, ma_hpf2* pHPF)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pHPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_hpf2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pHPF->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_hpf2_process_pcm_frame_s16(ma_hpf2* pHPF, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pHPF->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_hpf2_process_pcm_frame_f32(ma_hpf2* pHPF, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pHPF->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_hpf2_process_pcm_frames(ma_hpf2* pHPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pHPF == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pHPF->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_hpf2_get_latency(const ma_hpf2* pHPF)
{
    if (pHPF == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pHPF->bq);
}


MA_API ma_hpf_config ma_hpf_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order)
{
    ma_hpf_config config;

    MA_ZERO_OBJECT(&config);
    config.format          = format;
    config.channels        = channels;
    config.sampleRate      = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.order           = ma_min(order, MA_MAX_FILTER_ORDER);

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t hpf1Offset;
    size_t hpf2Offset;  /* Offset of the first second order filter. Subsequent filters will come straight after, and will each have the same heap size. */
} ma_hpf_heap_layout;

static void ma_hpf_calculate_sub_hpf_counts(ma_uint32 order, ma_uint32* pHPF1Count, ma_uint32* pHPF2Count)
{
    MA_ASSERT(pHPF1Count != NULL);
    MA_ASSERT(pHPF2Count != NULL);

    *pHPF1Count = order % 2;
    *pHPF2Count = order / 2;
}

static ma_result ma_hpf_get_heap_layout(const ma_hpf_config* pConfig, ma_hpf_heap_layout* pHeapLayout)
{
    ma_result result;
    ma_uint32 hpf1Count;
    ma_uint32 hpf2Count;
    ma_uint32 ihpf1;
    ma_uint32 ihpf2;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->order > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    ma_hpf_calculate_sub_hpf_counts(pConfig->order, &hpf1Count, &hpf2Count);

    pHeapLayout->sizeInBytes = 0;

    /* HPF 1 */
    pHeapLayout->hpf1Offset = pHeapLayout->sizeInBytes;
    for (ihpf1 = 0; ihpf1 < hpf1Count; ihpf1 += 1) {
        size_t hpf1HeapSizeInBytes;
        ma_hpf1_config hpf1Config = ma_hpf1_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency);

        result = ma_hpf1_get_heap_size(&hpf1Config, &hpf1HeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += sizeof(ma_hpf1) + hpf1HeapSizeInBytes;
    }

    /* HPF 2*/
    pHeapLayout->hpf2Offset = pHeapLayout->sizeInBytes;
    for (ihpf2 = 0; ihpf2 < hpf2Count; ihpf2 += 1) {
        size_t hpf2HeapSizeInBytes;
        ma_hpf2_config hpf2Config = ma_hpf2_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency, 0.707107);   /* <-- The "q" parameter does not matter for the purpose of calculating the heap size. */

        result = ma_hpf2_get_heap_size(&hpf2Config, &hpf2HeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += sizeof(ma_hpf2) + hpf2HeapSizeInBytes;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

static ma_result ma_hpf_reinit__internal(const ma_hpf_config* pConfig, void* pHeap, ma_hpf* pHPF, ma_bool32 isNew)
{
    ma_result result;
    ma_uint32 hpf1Count;
    ma_uint32 hpf2Count;
    ma_uint32 ihpf1;
    ma_uint32 ihpf2;
    ma_hpf_heap_layout heapLayout;  /* Only used if isNew is true. */

    if (pHPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Only supporting f32 and s16. */
    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    /* The format cannot be changed after initialization. */
    if (pHPF->format != ma_format_unknown && pHPF->format != pConfig->format) {
        return MA_INVALID_OPERATION;
    }

    /* The channel count cannot be changed after initialization. */
    if (pHPF->channels != 0 && pHPF->channels != pConfig->channels) {
        return MA_INVALID_OPERATION;
    }

    if (pConfig->order > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    ma_hpf_calculate_sub_hpf_counts(pConfig->order, &hpf1Count, &hpf2Count);

    /* The filter order can't change between reinits. */
    if (!isNew) {
        if (pHPF->hpf1Count != hpf1Count || pHPF->hpf2Count != hpf2Count) {
            return MA_INVALID_OPERATION;
        }
    }

    if (isNew) {
        result = ma_hpf_get_heap_layout(pConfig, &heapLayout);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHPF->_pHeap = pHeap;
        MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

        pHPF->pHPF1 = (ma_hpf1*)ma_offset_ptr(pHeap, heapLayout.hpf1Offset);
        pHPF->pHPF2 = (ma_hpf2*)ma_offset_ptr(pHeap, heapLayout.hpf2Offset);
    } else {
        MA_ZERO_OBJECT(&heapLayout);    /* To silence a compiler warning. */
    }

    for (ihpf1 = 0; ihpf1 < hpf1Count; ihpf1 += 1) {
        ma_hpf1_config hpf1Config = ma_hpf1_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency);

        if (isNew) {
            size_t hpf1HeapSizeInBytes;

            result = ma_hpf1_get_heap_size(&hpf1Config, &hpf1HeapSizeInBytes);
            if (result == MA_SUCCESS) {
                result = ma_hpf1_init_preallocated(&hpf1Config, ma_offset_ptr(pHeap, heapLayout.hpf1Offset + (sizeof(ma_hpf1) * hpf1Count) + (ihpf1 * hpf1HeapSizeInBytes)), &pHPF->pHPF1[ihpf1]);
            }
        } else {
            result = ma_hpf1_reinit(&hpf1Config, &pHPF->pHPF1[ihpf1]);
        }

        if (result != MA_SUCCESS) {
            ma_uint32 jhpf1;

            for (jhpf1 = 0; jhpf1 < ihpf1; jhpf1 += 1) {
                ma_hpf1_uninit(&pHPF->pHPF1[jhpf1], NULL);  /* No need for allocation callbacks here since we used a preallocated heap allocation. */
            }

            return result;
        }
    }

    for (ihpf2 = 0; ihpf2 < hpf2Count; ihpf2 += 1) {
        ma_hpf2_config hpf2Config;
        double q;
        double a;

        /* Tempting to use 0.707107, but won't result in a Butterworth filter if the order is > 2. */
        if (hpf1Count == 1) {
            a = (1 + ihpf2*1) * (MA_PI_D/(pConfig->order*1));   /* Odd order. */
        } else {
            a = (1 + ihpf2*2) * (MA_PI_D/(pConfig->order*2));   /* Even order. */
        }
        q = 1 / (2*ma_cosd(a));

        hpf2Config = ma_hpf2_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency, q);

        if (isNew) {
            size_t hpf2HeapSizeInBytes;

            result = ma_hpf2_get_heap_size(&hpf2Config, &hpf2HeapSizeInBytes);
            if (result == MA_SUCCESS) {
                result = ma_hpf2_init_preallocated(&hpf2Config, ma_offset_ptr(pHeap, heapLayout.hpf2Offset + (sizeof(ma_hpf2) * hpf2Count) + (ihpf2 * hpf2HeapSizeInBytes)), &pHPF->pHPF2[ihpf2]);
            }
        } else {
            result = ma_hpf2_reinit(&hpf2Config, &pHPF->pHPF2[ihpf2]);
        }

        if (result != MA_SUCCESS) {
            ma_uint32 jhpf1;
            ma_uint32 jhpf2;

            for (jhpf1 = 0; jhpf1 < hpf1Count; jhpf1 += 1) {
                ma_hpf1_uninit(&pHPF->pHPF1[jhpf1], NULL);  /* No need for allocation callbacks here since we used a preallocated heap allocation. */
            }

            for (jhpf2 = 0; jhpf2 < ihpf2; jhpf2 += 1) {
                ma_hpf2_uninit(&pHPF->pHPF2[jhpf2], NULL);  /* No need for allocation callbacks here since we used a preallocated heap allocation. */
            }

            return result;
        }
    }

    pHPF->hpf1Count  = hpf1Count;
    pHPF->hpf2Count  = hpf2Count;
    pHPF->format     = pConfig->format;
    pHPF->channels   = pConfig->channels;
    pHPF->sampleRate = pConfig->sampleRate;

    return MA_SUCCESS;
}

MA_API ma_result ma_hpf_get_heap_size(const ma_hpf_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_hpf_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_hpf_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return result;
}

MA_API ma_result ma_hpf_init_preallocated(const ma_hpf_config* pConfig, void* pHeap, ma_hpf* pLPF)
{
    if (pLPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pLPF);

    return ma_hpf_reinit__internal(pConfig, pHeap, pLPF, /*isNew*/MA_TRUE);
}

MA_API ma_result ma_hpf_init(const ma_hpf_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_hpf* pHPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_hpf_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_hpf_init_preallocated(pConfig, pHeap, pHPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pHPF->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_hpf_uninit(ma_hpf* pHPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_uint32 ihpf1;
    ma_uint32 ihpf2;

    if (pHPF == NULL) {
        return;
    }

    for (ihpf1 = 0; ihpf1 < pHPF->hpf1Count; ihpf1 += 1) {
        ma_hpf1_uninit(&pHPF->pHPF1[ihpf1], pAllocationCallbacks);
    }

    for (ihpf2 = 0; ihpf2 < pHPF->hpf2Count; ihpf2 += 1) {
        ma_hpf2_uninit(&pHPF->pHPF2[ihpf2], pAllocationCallbacks);
    }

    if (pHPF->_ownsHeap) {
        ma_free(pHPF->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_hpf_reinit(const ma_hpf_config* pConfig, ma_hpf* pHPF)
{
    return ma_hpf_reinit__internal(pConfig, NULL, pHPF, /*isNew*/MA_FALSE);
}

MA_API ma_result ma_hpf_process_pcm_frames(ma_hpf* pHPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_result result;
    ma_uint32 ihpf1;
    ma_uint32 ihpf2;

    if (pHPF == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Faster path for in-place. */
    if (pFramesOut == pFramesIn) {
        for (ihpf1 = 0; ihpf1 < pHPF->hpf1Count; ihpf1 += 1) {
            result = ma_hpf1_process_pcm_frames(&pHPF->pHPF1[ihpf1], pFramesOut, pFramesOut, frameCount);
            if (result != MA_SUCCESS) {
                return result;
            }
        }

        for (ihpf2 = 0; ihpf2 < pHPF->hpf2Count; ihpf2 += 1) {
            result = ma_hpf2_process_pcm_frames(&pHPF->pHPF2[ihpf2], pFramesOut, pFramesOut, frameCount);
            if (result != MA_SUCCESS) {
                return result;
            }
        }
    }

    /* Slightly slower path for copying. */
    if (pFramesOut != pFramesIn) {
        ma_uint32 iFrame;

        /*  */ if (pHPF->format == ma_format_f32) {
            /* */ float* pFramesOutF32 = (      float*)pFramesOut;
            const float* pFramesInF32  = (const float*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                MA_COPY_MEMORY(pFramesOutF32, pFramesInF32, ma_get_bytes_per_frame(pHPF->format, pHPF->channels));

                for (ihpf1 = 0; ihpf1 < pHPF->hpf1Count; ihpf1 += 1) {
                    ma_hpf1_process_pcm_frame_f32(&pHPF->pHPF1[ihpf1], pFramesOutF32, pFramesOutF32);
                }

                for (ihpf2 = 0; ihpf2 < pHPF->hpf2Count; ihpf2 += 1) {
                    ma_hpf2_process_pcm_frame_f32(&pHPF->pHPF2[ihpf2], pFramesOutF32, pFramesOutF32);
                }

                pFramesOutF32 += pHPF->channels;
                pFramesInF32  += pHPF->channels;
            }
        } else if (pHPF->format == ma_format_s16) {
            /* */ ma_int16* pFramesOutS16 = (      ma_int16*)pFramesOut;
            const ma_int16* pFramesInS16  = (const ma_int16*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                MA_COPY_MEMORY(pFramesOutS16, pFramesInS16, ma_get_bytes_per_frame(pHPF->format, pHPF->channels));

                for (ihpf1 = 0; ihpf1 < pHPF->hpf1Count; ihpf1 += 1) {
                    ma_hpf1_process_pcm_frame_s16(&pHPF->pHPF1[ihpf1], pFramesOutS16, pFramesOutS16);
                }

                for (ihpf2 = 0; ihpf2 < pHPF->hpf2Count; ihpf2 += 1) {
                    ma_hpf2_process_pcm_frame_s16(&pHPF->pHPF2[ihpf2], pFramesOutS16, pFramesOutS16);
                }

                pFramesOutS16 += pHPF->channels;
                pFramesInS16  += pHPF->channels;
            }
        } else {
            MA_ASSERT(MA_FALSE);
            return MA_INVALID_OPERATION;    /* Should never hit this. */
        }
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_hpf_get_latency(const ma_hpf* pHPF)
{
    if (pHPF == NULL) {
        return 0;
    }

    return pHPF->hpf2Count*2 + pHPF->hpf1Count;
}


/**************************************************************************************************************************************************************

Band-Pass Filtering

**************************************************************************************************************************************************************/
MA_API ma_bpf2_config ma_bpf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, double q)
{
    ma_bpf2_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.sampleRate = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.q = q;

    /* Q cannot be 0 or else it'll result in a division by 0. In this case just default to 0.707107. */
    if (config.q == 0) {
        config.q = 0.707107;
    }

    return config;
}


static MA_INLINE ma_biquad_config ma_bpf2__get_biquad_config(const ma_bpf2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double q;
    double w;
    double s;
    double c;
    double a;

    MA_ASSERT(pConfig != NULL);

    q = pConfig->q;
    w = 2 * MA_PI_D * pConfig->cutoffFrequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    a = s / (2*q);

    bqConfig.b0 =  q * a;
    bqConfig.b1 =  0;
    bqConfig.b2 = -q * a;
    bqConfig.a0 =  1 + a;
    bqConfig.a1 = -2 * c;
    bqConfig.a2 =  1 - a;

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_bpf2_get_heap_size(const ma_bpf2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_bpf2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_bpf2_init_preallocated(const ma_bpf2_config* pConfig, void* pHeap, ma_bpf2* pBPF)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pBPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pBPF);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_bpf2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pBPF->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_bpf2_init(const ma_bpf2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_bpf2* pBPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_bpf2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_bpf2_init_preallocated(pConfig, pHeap, pBPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pBPF->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_bpf2_uninit(ma_bpf2* pBPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pBPF == NULL) {
        return;
    }

    ma_biquad_uninit(&pBPF->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_bpf2_reinit(const ma_bpf2_config* pConfig, ma_bpf2* pBPF)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pBPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_bpf2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pBPF->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_bpf2_process_pcm_frame_s16(ma_bpf2* pBPF, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pBPF->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_bpf2_process_pcm_frame_f32(ma_bpf2* pBPF, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pBPF->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_bpf2_process_pcm_frames(ma_bpf2* pBPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pBPF == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pBPF->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_bpf2_get_latency(const ma_bpf2* pBPF)
{
    if (pBPF == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pBPF->bq);
}


MA_API ma_bpf_config ma_bpf_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order)
{
    ma_bpf_config config;

    MA_ZERO_OBJECT(&config);
    config.format          = format;
    config.channels        = channels;
    config.sampleRate      = sampleRate;
    config.cutoffFrequency = cutoffFrequency;
    config.order           = ma_min(order, MA_MAX_FILTER_ORDER);

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t bpf2Offset;
} ma_bpf_heap_layout;

static ma_result ma_bpf_get_heap_layout(const ma_bpf_config* pConfig, ma_bpf_heap_layout* pHeapLayout)
{
    ma_result result;
    ma_uint32 bpf2Count;
    ma_uint32 ibpf2;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->order > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    /* We must have an even number of order. */
    if ((pConfig->order & 0x1) != 0) {
        return MA_INVALID_ARGS;
    }

    bpf2Count = pConfig->order / 2;

    pHeapLayout->sizeInBytes = 0;

    /* BPF 2 */
    pHeapLayout->bpf2Offset = pHeapLayout->sizeInBytes;
    for (ibpf2 = 0; ibpf2 < bpf2Count; ibpf2 += 1) {
        size_t bpf2HeapSizeInBytes;
        ma_bpf2_config bpf2Config = ma_bpf2_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency, 0.707107);   /* <-- The "q" parameter does not matter for the purpose of calculating the heap size. */

        result = ma_bpf2_get_heap_size(&bpf2Config, &bpf2HeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += sizeof(ma_bpf2) + bpf2HeapSizeInBytes;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

static ma_result ma_bpf_reinit__internal(const ma_bpf_config* pConfig, void* pHeap, ma_bpf* pBPF, ma_bool32 isNew)
{
    ma_result result;
    ma_uint32 bpf2Count;
    ma_uint32 ibpf2;
    ma_bpf_heap_layout heapLayout;  /* Only used if isNew is true. */

    if (pBPF == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Only supporting f32 and s16. */
    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    /* The format cannot be changed after initialization. */
    if (pBPF->format != ma_format_unknown && pBPF->format != pConfig->format) {
        return MA_INVALID_OPERATION;
    }

    /* The channel count cannot be changed after initialization. */
    if (pBPF->channels != 0 && pBPF->channels != pConfig->channels) {
        return MA_INVALID_OPERATION;
    }

    if (pConfig->order > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    /* We must have an even number of order. */
    if ((pConfig->order & 0x1) != 0) {
        return MA_INVALID_ARGS;
    }

    bpf2Count = pConfig->order / 2;

    /* The filter order can't change between reinits. */
    if (!isNew) {
        if (pBPF->bpf2Count != bpf2Count) {
            return MA_INVALID_OPERATION;
        }
    }

    if (isNew) {
        result = ma_bpf_get_heap_layout(pConfig, &heapLayout);
        if (result != MA_SUCCESS) {
            return result;
        }

        pBPF->_pHeap = pHeap;
        MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

        pBPF->pBPF2 = (ma_bpf2*)ma_offset_ptr(pHeap, heapLayout.bpf2Offset);
    } else {
        MA_ZERO_OBJECT(&heapLayout);
    }

    for (ibpf2 = 0; ibpf2 < bpf2Count; ibpf2 += 1) {
        ma_bpf2_config bpf2Config;
        double q;

        /* TODO: Calculate Q to make this a proper Butterworth filter. */
        q = 0.707107;

        bpf2Config = ma_bpf2_config_init(pConfig->format, pConfig->channels, pConfig->sampleRate, pConfig->cutoffFrequency, q);

        if (isNew) {
            size_t bpf2HeapSizeInBytes;

            result = ma_bpf2_get_heap_size(&bpf2Config, &bpf2HeapSizeInBytes);
            if (result == MA_SUCCESS) {
                result = ma_bpf2_init_preallocated(&bpf2Config, ma_offset_ptr(pHeap, heapLayout.bpf2Offset + (sizeof(ma_bpf2) * bpf2Count) + (ibpf2 * bpf2HeapSizeInBytes)), &pBPF->pBPF2[ibpf2]);
            }
        } else {
            result = ma_bpf2_reinit(&bpf2Config, &pBPF->pBPF2[ibpf2]);
        }

        if (result != MA_SUCCESS) {
            return result;
        }
    }

    pBPF->bpf2Count = bpf2Count;
    pBPF->format    = pConfig->format;
    pBPF->channels  = pConfig->channels;

    return MA_SUCCESS;
}


MA_API ma_result ma_bpf_get_heap_size(const ma_bpf_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_bpf_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_bpf_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_bpf_init_preallocated(const ma_bpf_config* pConfig, void* pHeap, ma_bpf* pBPF)
{
    if (pBPF == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pBPF);

    return ma_bpf_reinit__internal(pConfig, pHeap, pBPF, /*isNew*/MA_TRUE);
}

MA_API ma_result ma_bpf_init(const ma_bpf_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_bpf* pBPF)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_bpf_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_bpf_init_preallocated(pConfig, pHeap, pBPF);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pBPF->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_bpf_uninit(ma_bpf* pBPF, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_uint32 ibpf2;

    if (pBPF == NULL) {
        return;
    }

    for (ibpf2 = 0; ibpf2 < pBPF->bpf2Count; ibpf2 += 1) {
        ma_bpf2_uninit(&pBPF->pBPF2[ibpf2], pAllocationCallbacks);
    }

    if (pBPF->_ownsHeap) {
        ma_free(pBPF->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_bpf_reinit(const ma_bpf_config* pConfig, ma_bpf* pBPF)
{
    return ma_bpf_reinit__internal(pConfig, NULL, pBPF, /*isNew*/MA_FALSE);
}

MA_API ma_result ma_bpf_process_pcm_frames(ma_bpf* pBPF, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_result result;
    ma_uint32 ibpf2;

    if (pBPF == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Faster path for in-place. */
    if (pFramesOut == pFramesIn) {
        for (ibpf2 = 0; ibpf2 < pBPF->bpf2Count; ibpf2 += 1) {
            result = ma_bpf2_process_pcm_frames(&pBPF->pBPF2[ibpf2], pFramesOut, pFramesOut, frameCount);
            if (result != MA_SUCCESS) {
                return result;
            }
        }
    }

    /* Slightly slower path for copying. */
    if (pFramesOut != pFramesIn) {
        ma_uint32 iFrame;

        /*  */ if (pBPF->format == ma_format_f32) {
            /* */ float* pFramesOutF32 = (      float*)pFramesOut;
            const float* pFramesInF32  = (const float*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                MA_COPY_MEMORY(pFramesOutF32, pFramesInF32, ma_get_bytes_per_frame(pBPF->format, pBPF->channels));

                for (ibpf2 = 0; ibpf2 < pBPF->bpf2Count; ibpf2 += 1) {
                    ma_bpf2_process_pcm_frame_f32(&pBPF->pBPF2[ibpf2], pFramesOutF32, pFramesOutF32);
                }

                pFramesOutF32 += pBPF->channels;
                pFramesInF32  += pBPF->channels;
            }
        } else if (pBPF->format == ma_format_s16) {
            /* */ ma_int16* pFramesOutS16 = (      ma_int16*)pFramesOut;
            const ma_int16* pFramesInS16  = (const ma_int16*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                MA_COPY_MEMORY(pFramesOutS16, pFramesInS16, ma_get_bytes_per_frame(pBPF->format, pBPF->channels));

                for (ibpf2 = 0; ibpf2 < pBPF->bpf2Count; ibpf2 += 1) {
                    ma_bpf2_process_pcm_frame_s16(&pBPF->pBPF2[ibpf2], pFramesOutS16, pFramesOutS16);
                }

                pFramesOutS16 += pBPF->channels;
                pFramesInS16  += pBPF->channels;
            }
        } else {
            MA_ASSERT(MA_FALSE);
            return MA_INVALID_OPERATION;    /* Should never hit this. */
        }
    }

    return MA_SUCCESS;
}

MA_API ma_uint32 ma_bpf_get_latency(const ma_bpf* pBPF)
{
    if (pBPF == NULL) {
        return 0;
    }

    return pBPF->bpf2Count*2;
}


/**************************************************************************************************************************************************************

Notching Filter

**************************************************************************************************************************************************************/
MA_API ma_notch2_config ma_notch2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double q, double frequency)
{
    ma_notch2_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;
    config.q          = q;
    config.frequency  = frequency;

    if (config.q == 0) {
        config.q = 0.707107;
    }

    return config;
}


static MA_INLINE ma_biquad_config ma_notch2__get_biquad_config(const ma_notch2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double q;
    double w;
    double s;
    double c;
    double a;

    MA_ASSERT(pConfig != NULL);

    q = pConfig->q;
    w = 2 * MA_PI_D * pConfig->frequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    a = s / (2*q);

    bqConfig.b0 =  1;
    bqConfig.b1 = -2 * c;
    bqConfig.b2 =  1;
    bqConfig.a0 =  1 + a;
    bqConfig.a1 = -2 * c;
    bqConfig.a2 =  1 - a;

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_notch2_get_heap_size(const ma_notch2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_notch2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_notch2_init_preallocated(const ma_notch2_config* pConfig, void* pHeap, ma_notch2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFilter);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_notch2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_notch2_init(const ma_notch2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_notch2* pFilter)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_notch2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_notch2_init_preallocated(pConfig, pHeap, pFilter);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pFilter->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_notch2_uninit(ma_notch2* pFilter, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFilter == NULL) {
        return;
    }

    ma_biquad_uninit(&pFilter->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_notch2_reinit(const ma_notch2_config* pConfig, ma_notch2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_notch2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_notch2_process_pcm_frame_s16(ma_notch2* pFilter, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pFilter->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_notch2_process_pcm_frame_f32(ma_notch2* pFilter, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pFilter->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_notch2_process_pcm_frames(ma_notch2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pFilter->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_notch2_get_latency(const ma_notch2* pFilter)
{
    if (pFilter == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pFilter->bq);
}



/**************************************************************************************************************************************************************

Peaking EQ Filter

**************************************************************************************************************************************************************/
MA_API ma_peak2_config ma_peak2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double q, double frequency)
{
    ma_peak2_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;
    config.gainDB     = gainDB;
    config.q          = q;
    config.frequency  = frequency;

    if (config.q == 0) {
        config.q = 0.707107;
    }

    return config;
}


static MA_INLINE ma_biquad_config ma_peak2__get_biquad_config(const ma_peak2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double q;
    double w;
    double s;
    double c;
    double a;
    double A;

    MA_ASSERT(pConfig != NULL);

    q = pConfig->q;
    w = 2 * MA_PI_D * pConfig->frequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    a = s / (2*q);
    A = ma_powd(10, (pConfig->gainDB / 40));

    bqConfig.b0 =  1 + (a * A);
    bqConfig.b1 = -2 * c;
    bqConfig.b2 =  1 - (a * A);
    bqConfig.a0 =  1 + (a / A);
    bqConfig.a1 = -2 * c;
    bqConfig.a2 =  1 - (a / A);

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_peak2_get_heap_size(const ma_peak2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_peak2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_peak2_init_preallocated(const ma_peak2_config* pConfig, void* pHeap, ma_peak2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFilter);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_peak2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_peak2_init(const ma_peak2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_peak2* pFilter)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_peak2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_peak2_init_preallocated(pConfig, pHeap, pFilter);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pFilter->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_peak2_uninit(ma_peak2* pFilter, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFilter == NULL) {
        return;
    }

    ma_biquad_uninit(&pFilter->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_peak2_reinit(const ma_peak2_config* pConfig, ma_peak2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_peak2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_peak2_process_pcm_frame_s16(ma_peak2* pFilter, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pFilter->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_peak2_process_pcm_frame_f32(ma_peak2* pFilter, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pFilter->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_peak2_process_pcm_frames(ma_peak2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pFilter->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_peak2_get_latency(const ma_peak2* pFilter)
{
    if (pFilter == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pFilter->bq);
}


/**************************************************************************************************************************************************************

Low Shelf Filter

**************************************************************************************************************************************************************/
MA_API ma_loshelf2_config ma_loshelf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double shelfSlope, double frequency)
{
    ma_loshelf2_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;
    config.gainDB     = gainDB;
    config.shelfSlope = shelfSlope;
    config.frequency  = frequency;

    return config;
}


static MA_INLINE ma_biquad_config ma_loshelf2__get_biquad_config(const ma_loshelf2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double w;
    double s;
    double c;
    double A;
    double S;
    double a;
    double sqrtA;

    MA_ASSERT(pConfig != NULL);

    w = 2 * MA_PI_D * pConfig->frequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    A = ma_powd(10, (pConfig->gainDB / 40));
    S = pConfig->shelfSlope;
    a = s/2 * ma_sqrtd((A + 1/A) * (1/S - 1) + 2);
    sqrtA = 2*ma_sqrtd(A)*a;

    bqConfig.b0 =  A * ((A + 1) - (A - 1)*c + sqrtA);
    bqConfig.b1 =  2 * A * ((A - 1) - (A + 1)*c);
    bqConfig.b2 =  A * ((A + 1) - (A - 1)*c - sqrtA);
    bqConfig.a0 =  (A + 1) + (A - 1)*c + sqrtA;
    bqConfig.a1 = -2 * ((A - 1) + (A + 1)*c);
    bqConfig.a2 =  (A + 1) + (A - 1)*c - sqrtA;

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_loshelf2_get_heap_size(const ma_loshelf2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_loshelf2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_loshelf2_init_preallocated(const ma_loshelf2_config* pConfig, void* pHeap, ma_loshelf2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFilter);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_loshelf2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_loshelf2_init(const ma_loshelf2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_loshelf2* pFilter)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_loshelf2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_loshelf2_init_preallocated(pConfig, pHeap, pFilter);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pFilter->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_loshelf2_uninit(ma_loshelf2* pFilter, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFilter == NULL) {
        return;
    }

    ma_biquad_uninit(&pFilter->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_loshelf2_reinit(const ma_loshelf2_config* pConfig, ma_loshelf2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_loshelf2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_loshelf2_process_pcm_frame_s16(ma_loshelf2* pFilter, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pFilter->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_loshelf2_process_pcm_frame_f32(ma_loshelf2* pFilter, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pFilter->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_loshelf2_process_pcm_frames(ma_loshelf2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pFilter->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_loshelf2_get_latency(const ma_loshelf2* pFilter)
{
    if (pFilter == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pFilter->bq);
}


/**************************************************************************************************************************************************************

High Shelf Filter

**************************************************************************************************************************************************************/
MA_API ma_hishelf2_config ma_hishelf2_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double shelfSlope, double frequency)
{
    ma_hishelf2_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;
    config.gainDB     = gainDB;
    config.shelfSlope = shelfSlope;
    config.frequency  = frequency;

    return config;
}


static MA_INLINE ma_biquad_config ma_hishelf2__get_biquad_config(const ma_hishelf2_config* pConfig)
{
    ma_biquad_config bqConfig;
    double w;
    double s;
    double c;
    double A;
    double S;
    double a;
    double sqrtA;

    MA_ASSERT(pConfig != NULL);

    w = 2 * MA_PI_D * pConfig->frequency / pConfig->sampleRate;
    s = ma_sind(w);
    c = ma_cosd(w);
    A = ma_powd(10, (pConfig->gainDB / 40));
    S = pConfig->shelfSlope;
    a = s/2 * ma_sqrtd((A + 1/A) * (1/S - 1) + 2);
    sqrtA = 2*ma_sqrtd(A)*a;

    bqConfig.b0 =  A * ((A + 1) + (A - 1)*c + sqrtA);
    bqConfig.b1 = -2 * A * ((A - 1) + (A + 1)*c);
    bqConfig.b2 =  A * ((A + 1) + (A - 1)*c - sqrtA);
    bqConfig.a0 =  (A + 1) - (A - 1)*c + sqrtA;
    bqConfig.a1 =  2 * ((A - 1) - (A + 1)*c);
    bqConfig.a2 =  (A + 1) - (A - 1)*c - sqrtA;

    bqConfig.format   = pConfig->format;
    bqConfig.channels = pConfig->channels;

    return bqConfig;
}

MA_API ma_result ma_hishelf2_get_heap_size(const ma_hishelf2_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_biquad_config bqConfig;
    bqConfig = ma_hishelf2__get_biquad_config(pConfig);

    return ma_biquad_get_heap_size(&bqConfig, pHeapSizeInBytes);
}

MA_API ma_result ma_hishelf2_init_preallocated(const ma_hishelf2_config* pConfig, void* pHeap, ma_hishelf2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFilter);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_hishelf2__get_biquad_config(pConfig);
    result = ma_biquad_init_preallocated(&bqConfig, pHeap, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_hishelf2_init(const ma_hishelf2_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_hishelf2* pFilter)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_hishelf2_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_hishelf2_init_preallocated(pConfig, pHeap, pFilter);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pFilter->bq._ownsHeap = MA_TRUE;    /* <-- This will cause the biquad to take ownership of the heap and free it when it's uninitialized. */
    return MA_SUCCESS;
}

MA_API void ma_hishelf2_uninit(ma_hishelf2* pFilter, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFilter == NULL) {
        return;
    }

    ma_biquad_uninit(&pFilter->bq, pAllocationCallbacks);   /* <-- This will free the heap allocation. */
}

MA_API ma_result ma_hishelf2_reinit(const ma_hishelf2_config* pConfig, ma_hishelf2* pFilter)
{
    ma_result result;
    ma_biquad_config bqConfig;

    if (pFilter == NULL || pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    bqConfig = ma_hishelf2__get_biquad_config(pConfig);
    result = ma_biquad_reinit(&bqConfig, &pFilter->bq);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

static MA_INLINE void ma_hishelf2_process_pcm_frame_s16(ma_hishelf2* pFilter, ma_int16* pFrameOut, const ma_int16* pFrameIn)
{
    ma_biquad_process_pcm_frame_s16(&pFilter->bq, pFrameOut, pFrameIn);
}

static MA_INLINE void ma_hishelf2_process_pcm_frame_f32(ma_hishelf2* pFilter, float* pFrameOut, const float* pFrameIn)
{
    ma_biquad_process_pcm_frame_f32(&pFilter->bq, pFrameOut, pFrameIn);
}

MA_API ma_result ma_hishelf2_process_pcm_frames(ma_hishelf2* pFilter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pFilter == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_biquad_process_pcm_frames(&pFilter->bq, pFramesOut, pFramesIn, frameCount);
}

MA_API ma_uint32 ma_hishelf2_get_latency(const ma_hishelf2* pFilter)
{
    if (pFilter == NULL) {
        return 0;
    }

    return ma_biquad_get_latency(&pFilter->bq);
}



/*
Delay
*/
MA_API ma_delay_config ma_delay_config_init(ma_uint32 channels, ma_uint32 sampleRate, ma_uint32 delayInFrames, float decay)
{
    ma_delay_config config;

    MA_ZERO_OBJECT(&config);
    config.channels      = channels;
    config.sampleRate    = sampleRate;
    config.delayInFrames = delayInFrames;
    config.delayStart    = (decay == 0) ? MA_TRUE : MA_FALSE;   /* Delay the start if it looks like we're not configuring an echo. */
    config.wet           = 1;
    config.dry           = 1;
    config.decay         = decay;

    return config;
}


MA_API ma_result ma_delay_init(const ma_delay_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_delay* pDelay)
{
    if (pDelay == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDelay);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->decay < 0 || pConfig->decay > 1) {
        return MA_INVALID_ARGS;
    }

    pDelay->config             = *pConfig;
    pDelay->bufferSizeInFrames = pConfig->delayInFrames;
    pDelay->cursor             = 0;

    pDelay->pBuffer = (float*)ma_malloc((size_t)(pDelay->bufferSizeInFrames * ma_get_bytes_per_frame(ma_format_f32, pConfig->channels)), pAllocationCallbacks);
    if (pDelay->pBuffer == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    ma_silence_pcm_frames(pDelay->pBuffer, pDelay->bufferSizeInFrames, ma_format_f32, pConfig->channels);

    return MA_SUCCESS;
}

MA_API void ma_delay_uninit(ma_delay* pDelay, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pDelay == NULL) {
        return;
    }

    ma_free(pDelay->pBuffer, pAllocationCallbacks);
}

MA_API ma_result ma_delay_process_pcm_frames(ma_delay* pDelay, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
    ma_uint32 iFrame;
    ma_uint32 iChannel;
    float* pFramesOutF32 = (float*)pFramesOut;
    const float* pFramesInF32 = (const float*)pFramesIn;

    if (pDelay == NULL || pFramesOut == NULL || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        for (iChannel = 0; iChannel < pDelay->config.channels; iChannel += 1) {
            ma_uint32 iBuffer = (pDelay->cursor * pDelay->config.channels) + iChannel;

            if (pDelay->config.delayStart) {
                /* Delayed start. */

                /* Read */
                pFramesOutF32[iChannel] = pDelay->pBuffer[iBuffer] * pDelay->config.wet;

                /* Feedback */
                pDelay->pBuffer[iBuffer] = (pDelay->pBuffer[iBuffer] * pDelay->config.decay) + (pFramesInF32[iChannel] * pDelay->config.dry);
            } else {
                /* Immediate start */

                /* Feedback */
                pDelay->pBuffer[iBuffer] = (pDelay->pBuffer[iBuffer] * pDelay->config.decay) + (pFramesInF32[iChannel] * pDelay->config.dry);

                /* Read */
                pFramesOutF32[iChannel] = pDelay->pBuffer[iBuffer] * pDelay->config.wet;
            }
        }

        pDelay->cursor = (pDelay->cursor + 1) % pDelay->bufferSizeInFrames;

        pFramesOutF32 += pDelay->config.channels;
        pFramesInF32  += pDelay->config.channels;
    }

    return MA_SUCCESS;
}

MA_API void ma_delay_set_wet(ma_delay* pDelay, float value)
{
    if (pDelay == NULL) {
        return;
    }

    pDelay->config.wet = value;
}

MA_API float ma_delay_get_wet(const ma_delay* pDelay)
{
    if (pDelay == NULL) {
        return 0;
    }

    return pDelay->config.wet;
}

MA_API void ma_delay_set_dry(ma_delay* pDelay, float value)
{
    if (pDelay == NULL) {
        return;
    }

    pDelay->config.dry = value;
}

MA_API float ma_delay_get_dry(const ma_delay* pDelay)
{
    if (pDelay == NULL) {
        return 0;
    }

    return pDelay->config.dry;
}

MA_API void ma_delay_set_decay(ma_delay* pDelay, float value)
{
    if (pDelay == NULL) {
        return;
    }

    pDelay->config.decay = value;
}

MA_API float ma_delay_get_decay(const ma_delay* pDelay)
{
    if (pDelay == NULL) {
        return 0;
    }

    return pDelay->config.decay;
}


MA_API ma_gainer_config ma_gainer_config_init(ma_uint32 channels, ma_uint32 smoothTimeInFrames)
{
    ma_gainer_config config;

    MA_ZERO_OBJECT(&config);
    config.channels           = channels;
    config.smoothTimeInFrames = smoothTimeInFrames;

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t oldGainsOffset;
    size_t newGainsOffset;
} ma_gainer_heap_layout;

static ma_result ma_gainer_get_heap_layout(const ma_gainer_config* pConfig, ma_gainer_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Old gains. */
    pHeapLayout->oldGainsOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += sizeof(float) * pConfig->channels;

    /* New gains. */
    pHeapLayout->newGainsOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += sizeof(float) * pConfig->channels;

    /* Alignment. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}


MA_API ma_result ma_gainer_get_heap_size(const ma_gainer_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_gainer_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_gainer_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}


MA_API ma_result ma_gainer_init_preallocated(const ma_gainer_config* pConfig, void* pHeap, ma_gainer* pGainer)
{
    ma_result result;
    ma_gainer_heap_layout heapLayout;
    ma_uint32 iChannel;

    if (pGainer == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pGainer);

    if (pConfig == NULL || pHeap == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_gainer_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pGainer->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pGainer->pOldGains = (float*)ma_offset_ptr(pHeap, heapLayout.oldGainsOffset);
    pGainer->pNewGains = (float*)ma_offset_ptr(pHeap, heapLayout.newGainsOffset);
    pGainer->masterVolume = 1;

    pGainer->config = *pConfig;
    pGainer->t      = (ma_uint32)-1;  /* No interpolation by default. */

    for (iChannel = 0; iChannel < pConfig->channels; iChannel += 1) {
        pGainer->pOldGains[iChannel] = 1;
        pGainer->pNewGains[iChannel] = 1;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_gainer_init(const ma_gainer_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_gainer* pGainer)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_gainer_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to retrieve the size of the heap allocation. */
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_gainer_init_preallocated(pConfig, pHeap, pGainer);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pGainer->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_gainer_uninit(ma_gainer* pGainer, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pGainer == NULL) {
        return;
    }

    if (pGainer->_ownsHeap) {
        ma_free(pGainer->_pHeap, pAllocationCallbacks);
    }
}

static float ma_gainer_calculate_current_gain(const ma_gainer* pGainer, ma_uint32 channel)
{
    float a = (float)pGainer->t / pGainer->config.smoothTimeInFrames;
    return ma_mix_f32_fast(pGainer->pOldGains[channel], pGainer->pNewGains[channel], a);
}

static /*__attribute__((noinline))*/ ma_result ma_gainer_process_pcm_frames_internal(ma_gainer * pGainer, void* MA_RESTRICT pFramesOut, const void* MA_RESTRICT pFramesIn, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannel;
    ma_uint64 interpolatedFrameCount;

    MA_ASSERT(pGainer != NULL);

    /*
    We don't necessarily need to apply a linear interpolation for the entire frameCount frames. When
    linear interpolation is not needed we can do a simple volume adjustment which will be more
    efficient than a lerp with an alpha value of 1.

    To do this, all we need to do is determine how many frames need to have a lerp applied. Then we
    just process that number of frames with linear interpolation. After that we run on an optimized
    path which just applies the new gains without a lerp.
    */
    if (pGainer->t >= pGainer->config.smoothTimeInFrames) {
        interpolatedFrameCount = 0;
    } else {
        interpolatedFrameCount = pGainer->t - pGainer->config.smoothTimeInFrames;
        if (interpolatedFrameCount > frameCount) {
            interpolatedFrameCount = frameCount;
        }
    }

    /*
    Start off with our interpolated frames. When we do this, we'll adjust frameCount and our pointers
    so that the fast path can work naturally without consideration of the interpolated path.
    */
    if (interpolatedFrameCount > 0) {
        /* We can allow the input and output buffers to be null in which case we'll just update the internal timer. */
        if (pFramesOut != NULL && pFramesIn != NULL) {
            /*
            All we're really doing here is moving the old gains towards the new gains. We don't want to
            be modifying the gains inside the ma_gainer object because that will break things. Instead
            we can make a copy here on the stack. For extreme channel counts we can fall back to a slower
            implementation which just uses a standard lerp.
            */
            float* pFramesOutF32 = (float*)pFramesOut;
            const float* pFramesInF32 = (const float*)pFramesIn;
            float a = (float)pGainer->t / pGainer->config.smoothTimeInFrames;
            float d = 1.0f / pGainer->config.smoothTimeInFrames;

            if (pGainer->config.channels <= 32) {
                float pRunningGain[32];
                float pRunningGainDelta[32];    /* Could this be heap-allocated as part of the ma_gainer object? */

                /* Initialize the running gain. */
                for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
                    float t = (pGainer->pNewGains[iChannel] - pGainer->pOldGains[iChannel]) * pGainer->masterVolume;
                    pRunningGainDelta[iChannel] = t * d;
                    pRunningGain[iChannel] = (pGainer->pOldGains[iChannel] * pGainer->masterVolume) + (t * a);
                }

                iFrame = 0;

                /* Optimized paths for common channel counts. This is mostly just experimenting with some SIMD ideas. It's not necessarily final. */
                if (pGainer->config.channels == 2) {
                #if defined(MA_SUPPORT_SSE2)
                    if (ma_has_sse2()) {
                        ma_uint64 unrolledLoopCount = interpolatedFrameCount >> 1;

                        /* Expand some arrays so we can have a clean SIMD loop below. */
                        __m128 runningGainDelta0 = _mm_set_ps(pRunningGainDelta[1], pRunningGainDelta[0], pRunningGainDelta[1], pRunningGainDelta[0]);
                        __m128 runningGain0      = _mm_set_ps(pRunningGain[1] + pRunningGainDelta[1], pRunningGain[0] + pRunningGainDelta[0], pRunningGain[1], pRunningGain[0]);

                        for (; iFrame < unrolledLoopCount; iFrame += 1) {
                            _mm_storeu_ps(&pFramesOutF32[iFrame*4 + 0], _mm_mul_ps(_mm_loadu_ps(&pFramesInF32[iFrame*4 + 0]), runningGain0));
                            runningGain0 = _mm_add_ps(runningGain0, runningGainDelta0);
                        }

                        iFrame = unrolledLoopCount << 1;
                    } else
                #endif
                    {
                        /*
                        Two different scalar implementations here. Clang (and I assume GCC) will vectorize
                        both of these, but the bottom version results in a nicer vectorization with less
                        instructions emitted. The problem, however, is that the bottom version runs slower
                        when compiled with MSVC. The top version will be partially vectorized by MSVC.
                        */
                    #if defined(_MSC_VER) && !defined(__clang__)
                        ma_uint64 unrolledLoopCount = interpolatedFrameCount >> 1;

                        /* Expand some arrays so we can have a clean 4x SIMD operation in the loop. */
                        pRunningGainDelta[2] = pRunningGainDelta[0];
                        pRunningGainDelta[3] = pRunningGainDelta[1];
                        pRunningGain[2] = pRunningGain[0] + pRunningGainDelta[0];
                        pRunningGain[3] = pRunningGain[1] + pRunningGainDelta[1];

                        for (; iFrame < unrolledLoopCount; iFrame += 1) {
                            pFramesOutF32[iFrame*4 + 0] = pFramesInF32[iFrame*4 + 0] * pRunningGain[0];
                            pFramesOutF32[iFrame*4 + 1] = pFramesInF32[iFrame*4 + 1] * pRunningGain[1];
                            pFramesOutF32[iFrame*4 + 2] = pFramesInF32[iFrame*4 + 2] * pRunningGain[2];
                            pFramesOutF32[iFrame*4 + 3] = pFramesInF32[iFrame*4 + 3] * pRunningGain[3];

                            /* Move the running gain forward towards the new gain. */
                            pRunningGain[0] += pRunningGainDelta[0];
                            pRunningGain[1] += pRunningGainDelta[1];
                            pRunningGain[2] += pRunningGainDelta[2];
                            pRunningGain[3] += pRunningGainDelta[3];
                        }

                        iFrame = unrolledLoopCount << 1;
                    #else
                        for (; iFrame < interpolatedFrameCount; iFrame += 1) {
                            for (iChannel = 0; iChannel < 2; iChannel += 1) {
                                pFramesOutF32[iFrame*2 + iChannel] = pFramesInF32[iFrame*2 + iChannel] * pRunningGain[iChannel];
                            }

                            for (iChannel = 0; iChannel < 2; iChannel += 1) {
                                pRunningGain[iChannel] += pRunningGainDelta[iChannel];
                            }
                        }
                    #endif
                    }
                } else if (pGainer->config.channels == 6) {
                #if defined(MA_SUPPORT_SSE2)
                    if (ma_has_sse2()) {
                        /*
                        For 6 channels things are a bit more complicated because 6 isn't cleanly divisible by 4. We need to do 2 frames
                        at a time, meaning we'll be doing 12 samples in a group. Like the stereo case we'll need to expand some arrays
                        so we can do clean 4x SIMD operations.
                        */
                        ma_uint64 unrolledLoopCount = interpolatedFrameCount >> 1;

                        /* Expand some arrays so we can have a clean SIMD loop below. */
                        __m128 runningGainDelta0 = _mm_set_ps(pRunningGainDelta[3], pRunningGainDelta[2], pRunningGainDelta[1], pRunningGainDelta[0]);
                        __m128 runningGainDelta1 = _mm_set_ps(pRunningGainDelta[1], pRunningGainDelta[0], pRunningGainDelta[5], pRunningGainDelta[4]);
                        __m128 runningGainDelta2 = _mm_set_ps(pRunningGainDelta[5], pRunningGainDelta[4], pRunningGainDelta[3], pRunningGainDelta[2]);

                        __m128 runningGain0      = _mm_set_ps(pRunningGain[3],                        pRunningGain[2],                        pRunningGain[1],                        pRunningGain[0]);
                        __m128 runningGain1      = _mm_set_ps(pRunningGain[1] + pRunningGainDelta[1], pRunningGain[0] + pRunningGainDelta[0], pRunningGain[5],                        pRunningGain[4]);
                        __m128 runningGain2      = _mm_set_ps(pRunningGain[5] + pRunningGainDelta[5], pRunningGain[4] + pRunningGainDelta[4], pRunningGain[3] + pRunningGainDelta[3], pRunningGain[2] + pRunningGainDelta[2]);

                        for (; iFrame < unrolledLoopCount; iFrame += 1) {
                            _mm_storeu_ps(&pFramesOutF32[iFrame*12 + 0], _mm_mul_ps(_mm_loadu_ps(&pFramesInF32[iFrame*12 + 0]), runningGain0));
                            _mm_storeu_ps(&pFramesOutF32[iFrame*12 + 4], _mm_mul_ps(_mm_loadu_ps(&pFramesInF32[iFrame*12 + 4]), runningGain1));
                            _mm_storeu_ps(&pFramesOutF32[iFrame*12 + 8], _mm_mul_ps(_mm_loadu_ps(&pFramesInF32[iFrame*12 + 8]), runningGain2));

                            runningGain0 = _mm_add_ps(runningGain0, runningGainDelta0);
                            runningGain1 = _mm_add_ps(runningGain1, runningGainDelta1);
                            runningGain2 = _mm_add_ps(runningGain2, runningGainDelta2);
                        }

                        iFrame = unrolledLoopCount << 1;
                    } else
                #endif
                    {
                        for (; iFrame < interpolatedFrameCount; iFrame += 1) {
                            for (iChannel = 0; iChannel < 6; iChannel += 1) {
                                pFramesOutF32[iFrame*6 + iChannel] = pFramesInF32[iFrame*6 + iChannel] * pRunningGain[iChannel];
                            }

                            /* Move the running gain forward towards the new gain. */
                            for (iChannel = 0; iChannel < 6; iChannel += 1) {
                                pRunningGain[iChannel] += pRunningGainDelta[iChannel];
                            }
                        }
                    }
                } else if (pGainer->config.channels == 8) {
                    /* For 8 channels we can just go over frame by frame and do all eight channels as 2 separate 4x SIMD operations. */
                #if defined(MA_SUPPORT_SSE2)
                    if (ma_has_sse2()) {
                        __m128 runningGainDelta0 = _mm_loadu_ps(&pRunningGainDelta[0]);
                        __m128 runningGainDelta1 = _mm_loadu_ps(&pRunningGainDelta[4]);
                        __m128 runningGain0      = _mm_loadu_ps(&pRunningGain[0]);
                        __m128 runningGain1      = _mm_loadu_ps(&pRunningGain[4]);

                        for (; iFrame < interpolatedFrameCount; iFrame += 1) {
                            _mm_storeu_ps(&pFramesOutF32[iFrame*8 + 0], _mm_mul_ps(_mm_loadu_ps(&pFramesInF32[iFrame*8 + 0]), runningGain0));
                            _mm_storeu_ps(&pFramesOutF32[iFrame*8 + 4], _mm_mul_ps(_mm_loadu_ps(&pFramesInF32[iFrame*8 + 4]), runningGain1));

                            runningGain0 = _mm_add_ps(runningGain0, runningGainDelta0);
                            runningGain1 = _mm_add_ps(runningGain1, runningGainDelta1);
                        }
                    } else
                #endif
                    {
                        /* This is crafted so that it auto-vectorizes when compiled with Clang. */
                        for (; iFrame < interpolatedFrameCount; iFrame += 1) {
                            for (iChannel = 0; iChannel < 8; iChannel += 1) {
                                pFramesOutF32[iFrame*8 + iChannel] = pFramesInF32[iFrame*8 + iChannel] * pRunningGain[iChannel];
                            }

                            /* Move the running gain forward towards the new gain. */
                            for (iChannel = 0; iChannel < 8; iChannel += 1) {
                                pRunningGain[iChannel] += pRunningGainDelta[iChannel];
                            }
                        }
                    }
                }

                for (; iFrame < interpolatedFrameCount; iFrame += 1) {
                    for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
                        pFramesOutF32[iFrame*pGainer->config.channels + iChannel] = pFramesInF32[iFrame*pGainer->config.channels + iChannel] * pRunningGain[iChannel];
                        pRunningGain[iChannel] += pRunningGainDelta[iChannel];
                    }
                }
            } else {
                /* Slower path for extreme channel counts where we can't fit enough on the stack. We could also move this to the heap as part of the ma_gainer object which might even be better since it'll only be updated when the gains actually change. */
                for (iFrame = 0; iFrame < interpolatedFrameCount; iFrame += 1) {
                    for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
                        pFramesOutF32[iFrame*pGainer->config.channels + iChannel] = pFramesInF32[iFrame*pGainer->config.channels + iChannel] * ma_mix_f32_fast(pGainer->pOldGains[iChannel], pGainer->pNewGains[iChannel], a) * pGainer->masterVolume;
                    }

                    a += d;
                }
            }
        }

        /* Make sure the timer is updated. */
        pGainer->t = (ma_uint32)ma_min(pGainer->t + interpolatedFrameCount, pGainer->config.smoothTimeInFrames);

        /* Adjust our arguments so the next part can work normally. */
        frameCount -= interpolatedFrameCount;
        pFramesOut  = ma_offset_ptr(pFramesOut, interpolatedFrameCount * sizeof(float));
        pFramesIn   = ma_offset_ptr(pFramesIn,  interpolatedFrameCount * sizeof(float));
    }

    /* All we need to do here is apply the new gains using an optimized path. */
    if (pFramesOut != NULL && pFramesIn != NULL) {
        if (pGainer->config.channels <= 32) {
            float gains[32];
            for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
                gains[iChannel] = pGainer->pNewGains[iChannel] * pGainer->masterVolume;
            }

            ma_copy_and_apply_volume_factor_per_channel_f32((float*)pFramesOut, (const float*)pFramesIn, frameCount, pGainer->config.channels, gains);
        } else {
            /* Slow path. Too many channels to fit on the stack. Need to apply a master volume as a separate path. */
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
                    ((float*)pFramesOut)[iFrame*pGainer->config.channels + iChannel] = ((const float*)pFramesIn)[iFrame*pGainer->config.channels + iChannel] * pGainer->pNewGains[iChannel] * pGainer->masterVolume;
                }
            }
        }
    }

    /* Now that some frames have been processed we need to make sure future changes to the gain are interpolated. */
    if (pGainer->t == (ma_uint32)-1) {
        pGainer->t  = (ma_uint32)ma_min(pGainer->config.smoothTimeInFrames, frameCount);
    }

#if 0
    if (pGainer->t >= pGainer->config.smoothTimeInFrames) {
        /* Fast path. No gain calculation required. */
        ma_copy_and_apply_volume_factor_per_channel_f32(pFramesOutF32, pFramesInF32, frameCount, pGainer->config.channels, pGainer->pNewGains);
        ma_apply_volume_factor_f32(pFramesOutF32, frameCount * pGainer->config.channels, pGainer->masterVolume);

        /* Now that some frames have been processed we need to make sure future changes to the gain are interpolated. */
        if (pGainer->t == (ma_uint32)-1) {
            pGainer->t = pGainer->config.smoothTimeInFrames;
        }
    } else {
        /* Slow path. Need to interpolate the gain for each channel individually. */

        /* We can allow the input and output buffers to be null in which case we'll just update the internal timer. */
        if (pFramesOut != NULL && pFramesIn != NULL) {
            float a = (float)pGainer->t / pGainer->config.smoothTimeInFrames;
            float d = 1.0f / pGainer->config.smoothTimeInFrames;
            ma_uint32 channelCount = pGainer->config.channels;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channelCount; iChannel += 1) {
                    pFramesOutF32[iChannel] = pFramesInF32[iChannel] * ma_mix_f32_fast(pGainer->pOldGains[iChannel], pGainer->pNewGains[iChannel], a) * pGainer->masterVolume;
                }

                pFramesOutF32 += channelCount;
                pFramesInF32  += channelCount;

                a += d;
                if (a > 1) {
                    a = 1;
                }
            }
        }

        pGainer->t = (ma_uint32)ma_min(pGainer->t + frameCount, pGainer->config.smoothTimeInFrames);

    #if 0   /* Reference implementation. */
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            /* We can allow the input and output buffers to be null in which case we'll just update the internal timer. */
            if (pFramesOut != NULL && pFramesIn != NULL) {
                for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
                    pFramesOutF32[iFrame * pGainer->config.channels + iChannel] = pFramesInF32[iFrame * pGainer->config.channels + iChannel] * ma_gainer_calculate_current_gain(pGainer, iChannel) * pGainer->masterVolume;
                }
            }

            /* Move interpolation time forward, but don't go beyond our smoothing time. */
            pGainer->t = ma_min(pGainer->t + 1, pGainer->config.smoothTimeInFrames);
        }
    #endif
    }
#endif

    return MA_SUCCESS;
}

MA_API ma_result ma_gainer_process_pcm_frames(ma_gainer* pGainer, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pGainer == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    ma_gainer_process_pcm_frames_internal() marks pFramesOut and pFramesIn with MA_RESTRICT which
    helps with auto-vectorization.
    */
    return ma_gainer_process_pcm_frames_internal(pGainer, pFramesOut, pFramesIn, frameCount);
}

static void ma_gainer_set_gain_by_index(ma_gainer* pGainer, float newGain, ma_uint32 iChannel)
{
    pGainer->pOldGains[iChannel] = ma_gainer_calculate_current_gain(pGainer, iChannel);
    pGainer->pNewGains[iChannel] = newGain;
}

static void ma_gainer_reset_smoothing_time(ma_gainer* pGainer)
{
    if (pGainer->t == (ma_uint32)-1) {
        pGainer->t = pGainer->config.smoothTimeInFrames;    /* No smoothing required for initial gains setting. */
    } else {
        pGainer->t = 0;
    }
}

MA_API ma_result ma_gainer_set_gain(ma_gainer* pGainer, float newGain)
{
    ma_uint32 iChannel;

    if (pGainer == NULL) {
        return MA_INVALID_ARGS;
    }

    for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
        ma_gainer_set_gain_by_index(pGainer, newGain, iChannel);
    }

    /* The smoothing time needs to be reset to ensure we always interpolate by the configured smoothing time, but only if it's not the first setting. */
    ma_gainer_reset_smoothing_time(pGainer);

    return MA_SUCCESS;
}

MA_API ma_result ma_gainer_set_gains(ma_gainer* pGainer, float* pNewGains)
{
    ma_uint32 iChannel;

    if (pGainer == NULL || pNewGains == NULL) {
        return MA_INVALID_ARGS;
    }

    for (iChannel = 0; iChannel < pGainer->config.channels; iChannel += 1) {
        ma_gainer_set_gain_by_index(pGainer, pNewGains[iChannel], iChannel);
    }

    /* The smoothing time needs to be reset to ensure we always interpolate by the configured smoothing time, but only if it's not the first setting. */
    ma_gainer_reset_smoothing_time(pGainer);

    return MA_SUCCESS;
}

MA_API ma_result ma_gainer_set_master_volume(ma_gainer* pGainer, float volume)
{
    if (pGainer == NULL) {
        return MA_INVALID_ARGS;
    }

    pGainer->masterVolume = volume;

    return MA_SUCCESS;
}

MA_API ma_result ma_gainer_get_master_volume(const ma_gainer* pGainer, float* pVolume)
{
    if (pGainer == NULL || pVolume == NULL) {
        return MA_INVALID_ARGS;
    }

    *pVolume = pGainer->masterVolume;

    return MA_SUCCESS;
}


MA_API ma_panner_config ma_panner_config_init(ma_format format, ma_uint32 channels)
{
    ma_panner_config config;

    MA_ZERO_OBJECT(&config);
    config.format   = format;
    config.channels = channels;
    config.mode     = ma_pan_mode_balance;  /* Set to balancing mode by default because it's consistent with other audio engines and most likely what the caller is expecting. */
    config.pan      = 0;

    return config;
}


MA_API ma_result ma_panner_init(const ma_panner_config* pConfig, ma_panner* pPanner)
{
    if (pPanner == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pPanner);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    pPanner->format   = pConfig->format;
    pPanner->channels = pConfig->channels;
    pPanner->mode     = pConfig->mode;
    pPanner->pan      = pConfig->pan;

    return MA_SUCCESS;
}

static void ma_stereo_balance_pcm_frames_f32(float* pFramesOut, const float* pFramesIn, ma_uint64 frameCount, float pan)
{
    ma_uint64 iFrame;

    if (pan > 0) {
        float factor = 1.0f - pan;
        if (pFramesOut == pFramesIn) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                pFramesOut[iFrame*2 + 0] = pFramesIn[iFrame*2 + 0] * factor;
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                pFramesOut[iFrame*2 + 0] = pFramesIn[iFrame*2 + 0] * factor;
                pFramesOut[iFrame*2 + 1] = pFramesIn[iFrame*2 + 1];
            }
        }
    } else {
        float factor = 1.0f + pan;
        if (pFramesOut == pFramesIn) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                pFramesOut[iFrame*2 + 1] = pFramesIn[iFrame*2 + 1] * factor;
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                pFramesOut[iFrame*2 + 0] = pFramesIn[iFrame*2 + 0];
                pFramesOut[iFrame*2 + 1] = pFramesIn[iFrame*2 + 1] * factor;
            }
        }
    }
}

static void ma_stereo_balance_pcm_frames(void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount, ma_format format, float pan)
{
    if (pan == 0) {
        /* Fast path. No panning required. */
        if (pFramesOut == pFramesIn) {
            /* No-op */
        } else {
            ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, format, 2);
        }

        return;
    }

    switch (format) {
        case ma_format_f32: ma_stereo_balance_pcm_frames_f32((float*)pFramesOut, (float*)pFramesIn, frameCount, pan); break;

        /* Unknown format. Just copy. */
        default:
        {
            ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, format, 2);
        } break;
    }
}


static void ma_stereo_pan_pcm_frames_f32(float* pFramesOut, const float* pFramesIn, ma_uint64 frameCount, float pan)
{
    ma_uint64 iFrame;

    if (pan > 0) {
        float factorL0 = 1.0f - pan;
        float factorL1 = 0.0f + pan;

        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float sample0 = (pFramesIn[iFrame*2 + 0] * factorL0);
            float sample1 = (pFramesIn[iFrame*2 + 0] * factorL1) + pFramesIn[iFrame*2 + 1];

            pFramesOut[iFrame*2 + 0] = sample0;
            pFramesOut[iFrame*2 + 1] = sample1;
        }
    } else {
        float factorR0 = 0.0f - pan;
        float factorR1 = 1.0f + pan;

        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float sample0 = pFramesIn[iFrame*2 + 0] + (pFramesIn[iFrame*2 + 1] * factorR0);
            float sample1 =                           (pFramesIn[iFrame*2 + 1] * factorR1);

            pFramesOut[iFrame*2 + 0] = sample0;
            pFramesOut[iFrame*2 + 1] = sample1;
        }
    }
}

static void ma_stereo_pan_pcm_frames(void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount, ma_format format, float pan)
{
    if (pan == 0) {
        /* Fast path. No panning required. */
        if (pFramesOut == pFramesIn) {
            /* No-op */
        } else {
            ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, format, 2);
        }

        return;
    }

    switch (format) {
        case ma_format_f32: ma_stereo_pan_pcm_frames_f32((float*)pFramesOut, (float*)pFramesIn, frameCount, pan); break;

        /* Unknown format. Just copy. */
        default:
        {
            ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, format, 2);
        } break;
    }
}

MA_API ma_result ma_panner_process_pcm_frames(ma_panner* pPanner, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pPanner == NULL || pFramesOut == NULL || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pPanner->channels == 2) {
        /* Stereo case. For now assume channel 0 is left and channel right is 1, but should probably add support for a channel map. */
        if (pPanner->mode == ma_pan_mode_balance) {
            ma_stereo_balance_pcm_frames(pFramesOut, pFramesIn, frameCount, pPanner->format, pPanner->pan);
        } else {
            ma_stereo_pan_pcm_frames(pFramesOut, pFramesIn, frameCount, pPanner->format, pPanner->pan);
        }
    } else {
        if (pPanner->channels == 1) {
            /* Panning has no effect on mono streams. */
            ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, pPanner->format, pPanner->channels);
        } else {
            /* For now we're not going to support non-stereo set ups. Not sure how I want to handle this case just yet. */
            ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, pPanner->format, pPanner->channels);
        }
    }

    return MA_SUCCESS;
}

MA_API void ma_panner_set_mode(ma_panner* pPanner, ma_pan_mode mode)
{
    if (pPanner == NULL) {
        return;
    }

    pPanner->mode = mode;
}

MA_API ma_pan_mode ma_panner_get_mode(const ma_panner* pPanner)
{
    if (pPanner == NULL) {
        return ma_pan_mode_balance;
    }

    return pPanner->mode;
}

MA_API void ma_panner_set_pan(ma_panner* pPanner, float pan)
{
    if (pPanner == NULL) {
        return;
    }

    pPanner->pan = ma_clamp(pan, -1.0f, 1.0f);
}

MA_API float ma_panner_get_pan(const ma_panner* pPanner)
{
    if (pPanner == NULL) {
        return 0;
    }

    return pPanner->pan;
}




MA_API ma_fader_config ma_fader_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate)
{
    ma_fader_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;

    return config;
}


MA_API ma_result ma_fader_init(const ma_fader_config* pConfig, ma_fader* pFader)
{
    if (pFader == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFader);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Only f32 is supported for now. */
    if (pConfig->format != ma_format_f32) {
        return MA_INVALID_ARGS;
    }

    pFader->config         = *pConfig;
    pFader->volumeBeg      = 1;
    pFader->volumeEnd      = 1;
    pFader->lengthInFrames = 0;
    pFader->cursorInFrames = 0;

    return MA_SUCCESS;
}

MA_API ma_result ma_fader_process_pcm_frames(ma_fader* pFader, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pFader == NULL) {
        return MA_INVALID_ARGS;
    }

    /* If the cursor is still negative we need to just copy the absolute number of those frames, but no more than frameCount. */
    if (pFader->cursorInFrames < 0) {
        ma_uint64 absCursorInFrames = (ma_uint64)0 - pFader->cursorInFrames;
        if (absCursorInFrames > frameCount) {
            absCursorInFrames = frameCount;
        }

        ma_copy_pcm_frames(pFramesOut, pFramesIn, absCursorInFrames, pFader->config.format, pFader->config.channels);

        pFader->cursorInFrames += absCursorInFrames;
        frameCount -= absCursorInFrames;
        pFramesOut  = ma_offset_ptr(pFramesOut, ma_get_bytes_per_frame(pFader->config.format, pFader->config.channels)*absCursorInFrames);
        pFramesIn   = ma_offset_ptr(pFramesIn,  ma_get_bytes_per_frame(pFader->config.format, pFader->config.channels)*absCursorInFrames);
    }

    if (pFader->cursorInFrames >= 0) {
        /*
        For now we need to clamp frameCount so that the cursor never overflows 32-bits. This is required for
        the conversion to a float which we use for the linear interpolation. This might be changed later.
        */
        if (frameCount + pFader->cursorInFrames > UINT_MAX) {
            frameCount = UINT_MAX - pFader->cursorInFrames;
        }

        /* Optimized path if volumeBeg and volumeEnd are equal. */
        if (pFader->volumeBeg == pFader->volumeEnd) {
            if (pFader->volumeBeg == 1) {
                /* Straight copy. */
                ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, pFader->config.format, pFader->config.channels);
            } else {
                /* Copy with volume. */
                ma_copy_and_apply_volume_and_clip_pcm_frames(pFramesOut, pFramesIn, frameCount, pFader->config.format, pFader->config.channels, pFader->volumeBeg);
            }
        } else {
            /* Slower path. Volumes are different, so may need to do an interpolation. */
            if ((ma_uint64)pFader->cursorInFrames >= pFader->lengthInFrames) {
                /* Fast path. We've gone past the end of the fade period so just apply the end volume to all samples. */
                ma_copy_and_apply_volume_and_clip_pcm_frames(pFramesOut, pFramesIn, frameCount, pFader->config.format, pFader->config.channels, pFader->volumeEnd);
            } else {
                /* Slow path. This is where we do the actual fading. */
                ma_uint64 iFrame;
                ma_uint32 iChannel;

                /* For now we only support f32. Support for other formats might be added later. */
                if (pFader->config.format == ma_format_f32) {
                    const float* pFramesInF32  = (const float*)pFramesIn;
                    /* */ float* pFramesOutF32 = (      float*)pFramesOut;

                    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                        float a = (ma_uint32)ma_min(pFader->cursorInFrames + iFrame, pFader->lengthInFrames) / (float)((ma_uint32)pFader->lengthInFrames);   /* Safe cast due to the frameCount clamp at the top of this function. */
                        float volume = ma_mix_f32_fast(pFader->volumeBeg, pFader->volumeEnd, a);

                        for (iChannel = 0; iChannel < pFader->config.channels; iChannel += 1) {
                            pFramesOutF32[iFrame*pFader->config.channels + iChannel] = pFramesInF32[iFrame*pFader->config.channels + iChannel] * volume;
                        }
                    }
                } else {
                    return MA_NOT_IMPLEMENTED;
                }
            }
        }
    }

    pFader->cursorInFrames += frameCount;

    return MA_SUCCESS;
}

MA_API void ma_fader_get_data_format(const ma_fader* pFader, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate)
{
    if (pFader == NULL) {
        return;
    }

    if (pFormat != NULL) {
        *pFormat = pFader->config.format;
    }

    if (pChannels != NULL) {
        *pChannels = pFader->config.channels;
    }

    if (pSampleRate != NULL) {
        *pSampleRate = pFader->config.sampleRate;
    }
}

MA_API void ma_fader_set_fade(ma_fader* pFader, float volumeBeg, float volumeEnd, ma_uint64 lengthInFrames)
{
    ma_fader_set_fade_ex(pFader, volumeBeg, volumeEnd, lengthInFrames, 0);
}

MA_API void ma_fader_set_fade_ex(ma_fader* pFader, float volumeBeg, float volumeEnd, ma_uint64 lengthInFrames, ma_int64 startOffsetInFrames)
{
    if (pFader == NULL) {
        return;
    }

    /* If the volume is negative, use current volume. */
    if (volumeBeg < 0) {
        volumeBeg = ma_fader_get_current_volume(pFader);
    }

    /*
    The length needs to be clamped to 32-bits due to how we convert it to a float for linear
    interpolation reasons. I might change this requirement later, but for now it's not important.
    */
    if (lengthInFrames > UINT_MAX) {
        lengthInFrames = UINT_MAX;
    }

    /* The start offset needs to be clamped to ensure it doesn't overflow a signed number. */
    if (startOffsetInFrames > INT_MAX) {
        startOffsetInFrames = INT_MAX;
    }

    pFader->volumeBeg      = volumeBeg;
    pFader->volumeEnd      = volumeEnd;
    pFader->lengthInFrames = lengthInFrames;
    pFader->cursorInFrames = -startOffsetInFrames;
}

MA_API float ma_fader_get_current_volume(const ma_fader* pFader)
{
    if (pFader == NULL) {
        return 0.0f;
    }

    /* Any frames prior to the start of the fade period will be at unfaded volume. */
    if (pFader->cursorInFrames < 0) {
        return 1.0f;
    }

    /* The current volume depends on the position of the cursor. */
    if (pFader->cursorInFrames == 0) {
        return pFader->volumeBeg;
    } else if ((ma_uint64)pFader->cursorInFrames >= pFader->lengthInFrames) {   /* Safe case because the < 0 case was checked above. */
        return pFader->volumeEnd;
    } else {
        /* The cursor is somewhere inside the fading period. We can figure this out with a simple linear interpolation between volumeBeg and volumeEnd based on our cursor position. */
        return ma_mix_f32_fast(pFader->volumeBeg, pFader->volumeEnd, (ma_uint32)pFader->cursorInFrames / (float)((ma_uint32)pFader->lengthInFrames));    /* Safe cast to uint32 because we clamp it in ma_fader_process_pcm_frames(). */
    }
}





MA_API ma_vec3f ma_vec3f_init_3f(float x, float y, float z)
{
    ma_vec3f v;

    v.x = x;
    v.y = y;
    v.z = z;

    return v;
}

MA_API ma_vec3f ma_vec3f_sub(ma_vec3f a, ma_vec3f b)
{
    return ma_vec3f_init_3f(
        a.x - b.x,
        a.y - b.y,
        a.z - b.z
    );
}

MA_API ma_vec3f ma_vec3f_neg(ma_vec3f a)
{
    return ma_vec3f_init_3f(
        -a.x,
        -a.y,
        -a.z
    );
}

MA_API float ma_vec3f_dot(ma_vec3f a, ma_vec3f b)
{
    return a.x*b.x + a.y*b.y + a.z*b.z;
}

MA_API float ma_vec3f_len2(ma_vec3f v)
{
    return ma_vec3f_dot(v, v);
}

MA_API float ma_vec3f_len(ma_vec3f v)
{
    return (float)ma_sqrtd(ma_vec3f_len2(v));
}



MA_API float ma_vec3f_dist(ma_vec3f a, ma_vec3f b)
{
    return ma_vec3f_len(ma_vec3f_sub(a, b));
}

MA_API ma_vec3f ma_vec3f_normalize(ma_vec3f v)
{
    float invLen;
    float len2 = ma_vec3f_len2(v);
    if (len2 == 0) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    invLen = ma_rsqrtf(len2);
    v.x *= invLen;
    v.y *= invLen;
    v.z *= invLen;

    return v;
}

MA_API ma_vec3f ma_vec3f_cross(ma_vec3f a, ma_vec3f b)
{
    return ma_vec3f_init_3f(
        a.y*b.z - a.z*b.y,
        a.z*b.x - a.x*b.z,
        a.x*b.y - a.y*b.x
    );
}


MA_API void ma_atomic_vec3f_init(ma_atomic_vec3f* v, ma_vec3f value)
{
    v->v = value;
    v->lock = 0;    /* Important this is initialized to 0. */
}

MA_API void ma_atomic_vec3f_set(ma_atomic_vec3f* v, ma_vec3f value)
{
    ma_spinlock_lock(&v->lock);
    {
        v->v = value;
    }
    ma_spinlock_unlock(&v->lock);
}

MA_API ma_vec3f ma_atomic_vec3f_get(ma_atomic_vec3f* v)
{
    ma_vec3f r;

    ma_spinlock_lock(&v->lock);
    {
        r = v->v;
    }
    ma_spinlock_unlock(&v->lock);

    return r;
}



static void ma_channel_map_apply_f32(float* pFramesOut, const ma_channel* pChannelMapOut, ma_uint32 channelsOut, const float* pFramesIn, const ma_channel* pChannelMapIn, ma_uint32 channelsIn, ma_uint64 frameCount, ma_channel_mix_mode mode, ma_mono_expansion_mode monoExpansionMode);
static ma_bool32 ma_is_spatial_channel_position(ma_channel channelPosition);


#ifndef MA_DEFAULT_SPEED_OF_SOUND
#define MA_DEFAULT_SPEED_OF_SOUND   343.3f
#endif

/*
These vectors represent the direction that speakers are facing from the center point. They're used
for panning in the spatializer. Must be normalized.
*/
static ma_vec3f g_maChannelDirections[MA_CHANNEL_POSITION_COUNT] = {
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_NONE */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_MONO */
    {-0.7071f,  0.0f,    -0.7071f },  /* MA_CHANNEL_FRONT_LEFT */
    {+0.7071f,  0.0f,    -0.7071f },  /* MA_CHANNEL_FRONT_RIGHT */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_FRONT_CENTER */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_LFE */
    {-0.7071f,  0.0f,    +0.7071f },  /* MA_CHANNEL_BACK_LEFT */
    {+0.7071f,  0.0f,    +0.7071f },  /* MA_CHANNEL_BACK_RIGHT */
    {-0.3162f,  0.0f,    -0.9487f },  /* MA_CHANNEL_FRONT_LEFT_CENTER */
    {+0.3162f,  0.0f,    -0.9487f },  /* MA_CHANNEL_FRONT_RIGHT_CENTER */
    { 0.0f,     0.0f,    +1.0f    },  /* MA_CHANNEL_BACK_CENTER */
    {-1.0f,     0.0f,     0.0f    },  /* MA_CHANNEL_SIDE_LEFT */
    {+1.0f,     0.0f,     0.0f    },  /* MA_CHANNEL_SIDE_RIGHT */
    { 0.0f,    +1.0f,     0.0f    },  /* MA_CHANNEL_TOP_CENTER */
    {-0.5774f, +0.5774f, -0.5774f },  /* MA_CHANNEL_TOP_FRONT_LEFT */
    { 0.0f,    +0.7071f, -0.7071f },  /* MA_CHANNEL_TOP_FRONT_CENTER */
    {+0.5774f, +0.5774f, -0.5774f },  /* MA_CHANNEL_TOP_FRONT_RIGHT */
    {-0.5774f, +0.5774f, +0.5774f },  /* MA_CHANNEL_TOP_BACK_LEFT */
    { 0.0f,    +0.7071f, +0.7071f },  /* MA_CHANNEL_TOP_BACK_CENTER */
    {+0.5774f, +0.5774f, +0.5774f },  /* MA_CHANNEL_TOP_BACK_RIGHT */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_0 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_1 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_2 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_3 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_4 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_5 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_6 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_7 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_8 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_9 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_10 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_11 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_12 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_13 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_14 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_15 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_16 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_17 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_18 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_19 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_20 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_21 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_22 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_23 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_24 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_25 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_26 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_27 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_28 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_29 */
    { 0.0f,     0.0f,    -1.0f    },  /* MA_CHANNEL_AUX_30 */
    { 0.0f,     0.0f,    -1.0f    }   /* MA_CHANNEL_AUX_31 */
};

static ma_vec3f ma_get_channel_direction(ma_channel channel)
{
    if (channel >= MA_CHANNEL_POSITION_COUNT) {
        return ma_vec3f_init_3f(0, 0, -1);
    } else {
        return g_maChannelDirections[channel];
    }
}



static float ma_attenuation_inverse(float distance, float minDistance, float maxDistance, float rolloff)
{
    if (minDistance >= maxDistance) {
        return 1;   /* To avoid division by zero. Do not attenuate. */
    }

    return minDistance / (minDistance + rolloff * (ma_clamp(distance, minDistance, maxDistance) - minDistance));
}

static float ma_attenuation_linear(float distance, float minDistance, float maxDistance, float rolloff)
{
    if (minDistance >= maxDistance) {
        return 1;   /* To avoid division by zero. Do not attenuate. */
    }

    return 1 - rolloff * (ma_clamp(distance, minDistance, maxDistance) - minDistance) / (maxDistance - minDistance);
}

static float ma_attenuation_exponential(float distance, float minDistance, float maxDistance, float rolloff)
{
    if (minDistance >= maxDistance) {
        return 1;   /* To avoid division by zero. Do not attenuate. */
    }

    return (float)ma_powd(ma_clamp(distance, minDistance, maxDistance) / minDistance, -rolloff);
}


/*
Doppler Effect calculation taken from the OpenAL spec, with two main differences:

  1) The source to listener vector will have already been calculated at an earlier step so we can
     just use that directly. We need only the position of the source relative to the origin.

  2) We don't scale by a frequency because we actually just want the ratio which we'll plug straight
     into the resampler directly.
*/
static float ma_doppler_pitch(ma_vec3f relativePosition, ma_vec3f sourceVelocity, ma_vec3f listenVelocity, float speedOfSound, float dopplerFactor)
{
    float len;
    float vls;
    float vss;

    len = ma_vec3f_len(relativePosition);

    /*
    There's a case where the position of the source will be right on top of the listener in which
    case the length will be 0 and we'll end up with a division by zero. We can just return a ratio
    of 1.0 in this case. This is not considered in the OpenAL spec, but is necessary.
    */
    if (len == 0) {
        return 1.0;
    }

    vls = ma_vec3f_dot(relativePosition, listenVelocity) / len;
    vss = ma_vec3f_dot(relativePosition, sourceVelocity) / len;

    vls = ma_min(vls, speedOfSound / dopplerFactor);
    vss = ma_min(vss, speedOfSound / dopplerFactor);

    return (speedOfSound - dopplerFactor*vls) / (speedOfSound - dopplerFactor*vss);
}


static void ma_get_default_channel_map_for_spatializer(ma_channel* pChannelMap, size_t channelMapCap, ma_uint32 channelCount)
{
    /*
    Special case for stereo. Want to default the left and right speakers to side left and side
    right so that they're facing directly down the X axis rather than slightly forward. Not
    doing this will result in sounds being quieter when behind the listener. This might
    actually be good for some scenarios, but I don't think it's an appropriate default because
    it can be a bit unexpected.
    */
    if (channelCount == 2) {
        pChannelMap[0] = MA_CHANNEL_SIDE_LEFT;
        pChannelMap[1] = MA_CHANNEL_SIDE_RIGHT;
    } else {
        ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, channelCount);
    }
}


MA_API ma_spatializer_listener_config ma_spatializer_listener_config_init(ma_uint32 channelsOut)
{
    ma_spatializer_listener_config config;

    MA_ZERO_OBJECT(&config);
    config.channelsOut             = channelsOut;
    config.pChannelMapOut          = NULL;
    config.handedness              = ma_handedness_right;
    config.worldUp                 = ma_vec3f_init_3f(0, 1,  0);
    config.coneInnerAngleInRadians = 6.283185f; /* 360 degrees. */
    config.coneOuterAngleInRadians = 6.283185f; /* 360 degrees. */
    config.coneOuterGain           = 0;
    config.speedOfSound            = 343.3f;    /* Same as OpenAL. Used for doppler effect. */

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t channelMapOutOffset;
} ma_spatializer_listener_heap_layout;

static ma_result ma_spatializer_listener_get_heap_layout(const ma_spatializer_listener_config* pConfig, ma_spatializer_listener_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channelsOut == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Channel map. We always need this, even for passthroughs. */
    pHeapLayout->channelMapOutOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(sizeof(*pConfig->pChannelMapOut) * pConfig->channelsOut);

    return MA_SUCCESS;
}


MA_API ma_result ma_spatializer_listener_get_heap_size(const ma_spatializer_listener_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_spatializer_listener_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_spatializer_listener_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_spatializer_listener_init_preallocated(const ma_spatializer_listener_config* pConfig, void* pHeap, ma_spatializer_listener* pListener)
{
    ma_result result;
    ma_spatializer_listener_heap_layout heapLayout;

    if (pListener == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pListener);

    result = ma_spatializer_listener_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pListener->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pListener->config    = *pConfig;
    ma_atomic_vec3f_init(&pListener->position,  ma_vec3f_init_3f(0, 0, 0));
    ma_atomic_vec3f_init(&pListener->direction, ma_vec3f_init_3f(0, 0, -1));
    ma_atomic_vec3f_init(&pListener->velocity,  ma_vec3f_init_3f(0, 0,  0));
    pListener->isEnabled = MA_TRUE;

    /* Swap the forward direction if we're left handed (it was initialized based on right handed). */
    if (pListener->config.handedness == ma_handedness_left) {
        ma_vec3f negDir = ma_vec3f_neg(ma_spatializer_listener_get_direction(pListener));
        ma_spatializer_listener_set_direction(pListener, negDir.x, negDir.y, negDir.z);
    }


    /* We must always have a valid channel map. */
    pListener->config.pChannelMapOut = (ma_channel*)ma_offset_ptr(pHeap, heapLayout.channelMapOutOffset);

    /* Use a slightly different default channel map for stereo. */
    if (pConfig->pChannelMapOut == NULL) {
        ma_get_default_channel_map_for_spatializer(pListener->config.pChannelMapOut, pConfig->channelsOut, pConfig->channelsOut);
    } else {
        ma_channel_map_copy_or_default(pListener->config.pChannelMapOut, pConfig->channelsOut, pConfig->pChannelMapOut, pConfig->channelsOut);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_spatializer_listener_init(const ma_spatializer_listener_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_spatializer_listener* pListener)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_spatializer_listener_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_spatializer_listener_init_preallocated(pConfig, pHeap, pListener);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pListener->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_spatializer_listener_uninit(ma_spatializer_listener* pListener, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pListener == NULL) {
        return;
    }

    if (pListener->_ownsHeap) {
        ma_free(pListener->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_channel* ma_spatializer_listener_get_channel_map(ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return NULL;
    }

    return pListener->config.pChannelMapOut;
}

MA_API void ma_spatializer_listener_set_cone(ma_spatializer_listener* pListener, float innerAngleInRadians, float outerAngleInRadians, float outerGain)
{
    if (pListener == NULL) {
        return;
    }

    pListener->config.coneInnerAngleInRadians = innerAngleInRadians;
    pListener->config.coneOuterAngleInRadians = outerAngleInRadians;
    pListener->config.coneOuterGain           = outerGain;
}

MA_API void ma_spatializer_listener_get_cone(const ma_spatializer_listener* pListener, float* pInnerAngleInRadians, float* pOuterAngleInRadians, float* pOuterGain)
{
    if (pListener == NULL) {
        return;
    }

    if (pInnerAngleInRadians != NULL) {
        *pInnerAngleInRadians = pListener->config.coneInnerAngleInRadians;
    }

    if (pOuterAngleInRadians != NULL) {
        *pOuterAngleInRadians = pListener->config.coneOuterAngleInRadians;
    }

    if (pOuterGain != NULL) {
        *pOuterGain = pListener->config.coneOuterGain;
    }
}

MA_API void ma_spatializer_listener_set_position(ma_spatializer_listener* pListener, float x, float y, float z)
{
    if (pListener == NULL) {
        return;
    }

    ma_atomic_vec3f_set(&pListener->position, ma_vec3f_init_3f(x, y, z));
}

MA_API ma_vec3f ma_spatializer_listener_get_position(const ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_atomic_vec3f_get((ma_atomic_vec3f*)&pListener->position); /* Naughty const-cast. It's just for atomically loading the vec3 which should be safe. */
}

MA_API void ma_spatializer_listener_set_direction(ma_spatializer_listener* pListener, float x, float y, float z)
{
    if (pListener == NULL) {
        return;
    }

    ma_atomic_vec3f_set(&pListener->direction, ma_vec3f_init_3f(x, y, z));
}

MA_API ma_vec3f ma_spatializer_listener_get_direction(const ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return ma_vec3f_init_3f(0, 0, -1);
    }

    return ma_atomic_vec3f_get((ma_atomic_vec3f*)&pListener->direction);    /* Naughty const-cast. It's just for atomically loading the vec3 which should be safe. */
}

MA_API void ma_spatializer_listener_set_velocity(ma_spatializer_listener* pListener, float x, float y, float z)
{
    if (pListener == NULL) {
        return;
    }

    ma_atomic_vec3f_set(&pListener->velocity, ma_vec3f_init_3f(x, y, z));
}

MA_API ma_vec3f ma_spatializer_listener_get_velocity(const ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_atomic_vec3f_get((ma_atomic_vec3f*)&pListener->velocity); /* Naughty const-cast. It's just for atomically loading the vec3 which should be safe. */
}

MA_API void ma_spatializer_listener_set_speed_of_sound(ma_spatializer_listener* pListener, float speedOfSound)
{
    if (pListener == NULL) {
        return;
    }

    pListener->config.speedOfSound = speedOfSound;
}

MA_API float ma_spatializer_listener_get_speed_of_sound(const ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return 0;
    }

    return pListener->config.speedOfSound;
}

MA_API void ma_spatializer_listener_set_world_up(ma_spatializer_listener* pListener, float x, float y, float z)
{
    if (pListener == NULL) {
        return;
    }

    pListener->config.worldUp = ma_vec3f_init_3f(x, y, z);
}

MA_API ma_vec3f ma_spatializer_listener_get_world_up(const ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return ma_vec3f_init_3f(0, 1, 0);
    }

    return pListener->config.worldUp;
}

MA_API void ma_spatializer_listener_set_enabled(ma_spatializer_listener* pListener, ma_bool32 isEnabled)
{
    if (pListener == NULL) {
        return;
    }

    pListener->isEnabled = isEnabled;
}

MA_API ma_bool32 ma_spatializer_listener_is_enabled(const ma_spatializer_listener* pListener)
{
    if (pListener == NULL) {
        return MA_FALSE;
    }

    return pListener->isEnabled;
}




MA_API ma_spatializer_config ma_spatializer_config_init(ma_uint32 channelsIn, ma_uint32 channelsOut)
{
    ma_spatializer_config config;

    MA_ZERO_OBJECT(&config);
    config.channelsIn                   = channelsIn;
    config.channelsOut                  = channelsOut;
    config.pChannelMapIn                = NULL;
    config.attenuationModel             = ma_attenuation_model_inverse;
    config.positioning                  = ma_positioning_absolute;
    config.handedness                   = ma_handedness_right;
    config.minGain                      = 0;
    config.maxGain                      = 1;
    config.minDistance                  = 1;
    config.maxDistance                  = MA_FLT_MAX;
    config.rolloff                      = 1;
    config.coneInnerAngleInRadians      = 6.283185f; /* 360 degrees. */
    config.coneOuterAngleInRadians      = 6.283185f; /* 360 degrees. */
    config.coneOuterGain                = 0.0f;
    config.dopplerFactor                = 1;
    config.directionalAttenuationFactor = 1;
    config.minSpatializationChannelGain = 0.2f;
    config.gainSmoothTimeInFrames       = 360;       /* 7.5ms @ 48K. */

    return config;
}


static ma_gainer_config ma_spatializer_gainer_config_init(const ma_spatializer_config* pConfig)
{
    MA_ASSERT(pConfig != NULL);
    return ma_gainer_config_init(pConfig->channelsOut, pConfig->gainSmoothTimeInFrames);
}

static ma_result ma_spatializer_validate_config(const ma_spatializer_config* pConfig)
{
    MA_ASSERT(pConfig != NULL);

    if (pConfig->channelsIn == 0 || pConfig->channelsOut == 0) {
        return MA_INVALID_ARGS;
    }

    return MA_SUCCESS;
}

typedef struct
{
    size_t sizeInBytes;
    size_t channelMapInOffset;
    size_t newChannelGainsOffset;
    size_t gainerOffset;
} ma_spatializer_heap_layout;

static ma_result ma_spatializer_get_heap_layout(const ma_spatializer_config* pConfig, ma_spatializer_heap_layout* pHeapLayout)
{
    ma_result result;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_spatializer_validate_config(pConfig);
    if (result != MA_SUCCESS) {
        return result;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Channel map. */
    pHeapLayout->channelMapInOffset = MA_SIZE_MAX;  /* <-- MA_SIZE_MAX indicates no allocation necessary. */
    if (pConfig->pChannelMapIn != NULL) {
        pHeapLayout->channelMapInOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += ma_align_64(sizeof(*pConfig->pChannelMapIn) * pConfig->channelsIn);
    }

    /* New channel gains for output. */
    pHeapLayout->newChannelGainsOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(sizeof(float) * pConfig->channelsOut);

    /* Gainer. */
    {
        size_t gainerHeapSizeInBytes;
        ma_gainer_config gainerConfig;

        gainerConfig = ma_spatializer_gainer_config_init(pConfig);

        result = ma_gainer_get_heap_size(&gainerConfig, &gainerHeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->gainerOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += ma_align_64(gainerHeapSizeInBytes);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_spatializer_get_heap_size(const ma_spatializer_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_spatializer_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;  /* Safety. */

    result = ma_spatializer_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}


MA_API ma_result ma_spatializer_init_preallocated(const ma_spatializer_config* pConfig, void* pHeap, ma_spatializer* pSpatializer)
{
    ma_result result;
    ma_spatializer_heap_layout heapLayout;
    ma_gainer_config gainerConfig;

    if (pSpatializer == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pSpatializer);

    if (pConfig == NULL || pHeap == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_spatializer_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pSpatializer->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pSpatializer->channelsIn                   = pConfig->channelsIn;
    pSpatializer->channelsOut                  = pConfig->channelsOut;
    pSpatializer->attenuationModel             = pConfig->attenuationModel;
    pSpatializer->positioning                  = pConfig->positioning;
    pSpatializer->handedness                   = pConfig->handedness;
    pSpatializer->minGain                      = pConfig->minGain;
    pSpatializer->maxGain                      = pConfig->maxGain;
    pSpatializer->minDistance                  = pConfig->minDistance;
    pSpatializer->maxDistance                  = pConfig->maxDistance;
    pSpatializer->rolloff                      = pConfig->rolloff;
    pSpatializer->coneInnerAngleInRadians      = pConfig->coneInnerAngleInRadians;
    pSpatializer->coneOuterAngleInRadians      = pConfig->coneOuterAngleInRadians;
    pSpatializer->coneOuterGain                = pConfig->coneOuterGain;
    pSpatializer->dopplerFactor                = pConfig->dopplerFactor;
    pSpatializer->minSpatializationChannelGain = pConfig->minSpatializationChannelGain;
    pSpatializer->directionalAttenuationFactor = pConfig->directionalAttenuationFactor;
    pSpatializer->gainSmoothTimeInFrames       = pConfig->gainSmoothTimeInFrames;
    ma_atomic_vec3f_init(&pSpatializer->position,  ma_vec3f_init_3f(0, 0,  0));
    ma_atomic_vec3f_init(&pSpatializer->direction, ma_vec3f_init_3f(0, 0, -1));
    ma_atomic_vec3f_init(&pSpatializer->velocity,  ma_vec3f_init_3f(0, 0,  0));
    pSpatializer->dopplerPitch                 = 1;

    /* Swap the forward direction if we're left handed (it was initialized based on right handed). */
    if (pSpatializer->handedness == ma_handedness_left) {
        ma_vec3f negDir = ma_vec3f_neg(ma_spatializer_get_direction(pSpatializer));
        ma_spatializer_set_direction(pSpatializer, negDir.x, negDir.y, negDir.z);
    }

    /* Channel map. This will be on the heap. */
    if (pConfig->pChannelMapIn != NULL) {
        pSpatializer->pChannelMapIn = (ma_channel*)ma_offset_ptr(pHeap, heapLayout.channelMapInOffset);
        ma_channel_map_copy_or_default(pSpatializer->pChannelMapIn, pSpatializer->channelsIn, pConfig->pChannelMapIn, pSpatializer->channelsIn);
    }

    /* New channel gains for output channels. */
    pSpatializer->pNewChannelGainsOut = (float*)ma_offset_ptr(pHeap, heapLayout.newChannelGainsOffset);

    /* Gainer. */
    gainerConfig = ma_spatializer_gainer_config_init(pConfig);

    result = ma_gainer_init_preallocated(&gainerConfig, ma_offset_ptr(pHeap, heapLayout.gainerOffset), &pSpatializer->gainer);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the gainer. */
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_spatializer_init(const ma_spatializer_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_spatializer* pSpatializer)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    /* We'll need a heap allocation to retrieve the size. */
    result = ma_spatializer_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_spatializer_init_preallocated(pConfig, pHeap, pSpatializer);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pSpatializer->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_spatializer_uninit(ma_spatializer* pSpatializer, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_gainer_uninit(&pSpatializer->gainer, pAllocationCallbacks);

    if (pSpatializer->_ownsHeap) {
        ma_free(pSpatializer->_pHeap, pAllocationCallbacks);
    }
}

static float ma_calculate_angular_gain(ma_vec3f dirA, ma_vec3f dirB, float coneInnerAngleInRadians, float coneOuterAngleInRadians, float coneOuterGain)
{
    /*
    Angular attenuation.

    Unlike distance gain, the math for this is not specified by the OpenAL spec so we'll just go ahead and figure
    this out for ourselves at the expense of possibly being inconsistent with other implementations.

    To do cone attenuation, I'm just using the same math that we'd use to implement a basic spotlight in OpenGL. We
    just need to get the direction from the source to the listener and then do a dot product against that and the
    direction of the spotlight. Then we just compare that dot product against the cosine of the inner and outer
    angles. If the dot product is greater than the outer angle, we just use coneOuterGain. If it's less than
    the inner angle, we just use a gain of 1. Otherwise we linearly interpolate between 1 and coneOuterGain.
    */
    if (coneInnerAngleInRadians < 6.283185f) {
        float angularGain = 1;
        float cutoffInner = (float)ma_cosd(coneInnerAngleInRadians*0.5f);
        float cutoffOuter = (float)ma_cosd(coneOuterAngleInRadians*0.5f);
        float d;

        d = ma_vec3f_dot(dirA, dirB);

        if (d > cutoffInner) {
            /* It's inside the inner angle. */
            angularGain = 1;
        } else {
            /* It's outside the inner angle. */
            if (d > cutoffOuter) {
                /* It's between the inner and outer angle. We need to linearly interpolate between 1 and coneOuterGain. */
                angularGain = ma_mix_f32(coneOuterGain, 1, (d - cutoffOuter) / (cutoffInner - cutoffOuter));
            } else {
                /* It's outside the outer angle. */
                angularGain = coneOuterGain;
            }
        }

        /*printf("d = %f; cutoffInner = %f; cutoffOuter = %f; angularGain = %f\n", d, cutoffInner, cutoffOuter, angularGain);*/
        return angularGain;
    } else {
        /* Inner angle is 360 degrees so no need to do any attenuation. */
        return 1;
    }
}

MA_API ma_result ma_spatializer_process_pcm_frames(ma_spatializer* pSpatializer, ma_spatializer_listener* pListener, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_channel* pChannelMapIn  = pSpatializer->pChannelMapIn;
    ma_channel* pChannelMapOut = pListener->config.pChannelMapOut;

    if (pSpatializer == NULL) {
        return MA_INVALID_ARGS;
    }

    /* If we're not spatializing we need to run an optimized path. */
    if (ma_atomic_load_i32(&pSpatializer->attenuationModel) == ma_attenuation_model_none) {
        if (ma_spatializer_listener_is_enabled(pListener)) {
            /* No attenuation is required, but we'll need to do some channel conversion. */
            if (pSpatializer->channelsIn == pSpatializer->channelsOut) {
                ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, ma_format_f32, pSpatializer->channelsIn);
            } else {
                ma_channel_map_apply_f32((float*)pFramesOut, pChannelMapOut, pSpatializer->channelsOut, (const float*)pFramesIn, pChannelMapIn, pSpatializer->channelsIn, frameCount, ma_channel_mix_mode_rectangular, ma_mono_expansion_mode_default);   /* Safe casts to float* because f32 is the only supported format. */
            }
        } else {
            /* The listener is disabled. Output silence. */
            ma_silence_pcm_frames(pFramesOut, frameCount, ma_format_f32, pSpatializer->channelsOut);
        }

        /*
        We're not doing attenuation so don't bother with doppler for now. I'm not sure if this is
        the correct thinking so might need to review this later.
        */
        pSpatializer->dopplerPitch = 1;
    } else {
        /*
        Let's first determine which listener the sound is closest to. Need to keep in mind that we
        might not have a world or any listeners, in which case we just spatializer based on the
        listener being positioned at the origin (0, 0, 0).
        */
        ma_vec3f relativePosNormalized;
        ma_vec3f relativePos;   /* The position relative to the listener. */
        ma_vec3f relativeDir;   /* The direction of the sound, relative to the listener. */
        ma_vec3f listenerVel;   /* The velocity of the listener. For doppler pitch calculation. */
        float speedOfSound;
        float distance = 0;
        float gain = 1;
        ma_uint32 iChannel;
        const ma_uint32 channelsOut = pSpatializer->channelsOut;
        const ma_uint32 channelsIn  = pSpatializer->channelsIn;
        float minDistance = ma_spatializer_get_min_distance(pSpatializer);
        float maxDistance = ma_spatializer_get_max_distance(pSpatializer);
        float rolloff = ma_spatializer_get_rolloff(pSpatializer);
        float dopplerFactor = ma_spatializer_get_doppler_factor(pSpatializer);

        /*
        We'll need the listener velocity for doppler pitch calculations. The speed of sound is
        defined by the listener, so we'll grab that here too.
        */
        if (pListener != NULL) {
            listenerVel  = ma_spatializer_listener_get_velocity(pListener);
            speedOfSound = pListener->config.speedOfSound;
        } else {
            listenerVel  = ma_vec3f_init_3f(0, 0, 0);
            speedOfSound = MA_DEFAULT_SPEED_OF_SOUND;
        }

        if (pListener == NULL || ma_spatializer_get_positioning(pSpatializer) == ma_positioning_relative) {
            /* There's no listener or we're using relative positioning. */
            relativePos = ma_spatializer_get_position(pSpatializer);
            relativeDir = ma_spatializer_get_direction(pSpatializer);
        } else {
            /*
            We've found a listener and we're using absolute positioning. We need to transform the
            sound's position and direction so that it's relative to listener. Later on we'll use
            this for determining the factors to apply to each channel to apply the panning effect.
            */
            ma_spatializer_get_relative_position_and_direction(pSpatializer, pListener, &relativePos, &relativeDir);
        }

        distance = ma_vec3f_len(relativePos);

        /* We've gathered the data, so now we can apply some spatialization. */
        switch (ma_spatializer_get_attenuation_model(pSpatializer)) {
            case ma_attenuation_model_inverse:
            {
                gain = ma_attenuation_inverse(distance, minDistance, maxDistance, rolloff);
            } break;
            case ma_attenuation_model_linear:
            {
                gain = ma_attenuation_linear(distance, minDistance, maxDistance, rolloff);
            } break;
            case ma_attenuation_model_exponential:
            {
                gain = ma_attenuation_exponential(distance, minDistance, maxDistance, rolloff);
            } break;
            case ma_attenuation_model_none:
            default:
            {
                gain = 1;
            } break;
        }

        /* Normalize the position. */
        if (distance > 0.001f) {
            float distanceInv = 1/distance;
            relativePosNormalized    = relativePos;
            relativePosNormalized.x *= distanceInv;
            relativePosNormalized.y *= distanceInv;
            relativePosNormalized.z *= distanceInv;
        } else {
            distance = 0;
            relativePosNormalized = ma_vec3f_init_3f(0, 0, 0);
        }

        /*
        Angular attenuation.

        Unlike distance gain, the math for this is not specified by the OpenAL spec so we'll just go ahead and figure
        this out for ourselves at the expense of possibly being inconsistent with other implementations.

        To do cone attenuation, I'm just using the same math that we'd use to implement a basic spotlight in OpenGL. We
        just need to get the direction from the source to the listener and then do a dot product against that and the
        direction of the spotlight. Then we just compare that dot product against the cosine of the inner and outer
        angles. If the dot product is greater than the outer angle, we just use coneOuterGain. If it's less than
        the inner angle, we just use a gain of 1. Otherwise we linearly interpolate between 1 and coneOuterGain.
        */
        if (distance > 0) {
            /* Source angular gain. */
            float spatializerConeInnerAngle;
            float spatializerConeOuterAngle;
            float spatializerConeOuterGain;
            ma_spatializer_get_cone(pSpatializer, &spatializerConeInnerAngle, &spatializerConeOuterAngle, &spatializerConeOuterGain);

            gain *= ma_calculate_angular_gain(relativeDir, ma_vec3f_neg(relativePosNormalized), spatializerConeInnerAngle, spatializerConeOuterAngle, spatializerConeOuterGain);

            /*
            We're supporting angular gain on the listener as well for those who want to reduce the volume of sounds that
            are positioned behind the listener. On default settings, this will have no effect.
            */
            if (pListener != NULL && pListener->config.coneInnerAngleInRadians < 6.283185f) {
                ma_vec3f listenerDirection;
                float listenerInnerAngle;
                float listenerOuterAngle;
                float listenerOuterGain;

                if (pListener->config.handedness == ma_handedness_right) {
                    listenerDirection = ma_vec3f_init_3f(0, 0, -1);
                } else {
                    listenerDirection = ma_vec3f_init_3f(0, 0, +1);
                }

                listenerInnerAngle = pListener->config.coneInnerAngleInRadians;
                listenerOuterAngle = pListener->config.coneOuterAngleInRadians;
                listenerOuterGain  = pListener->config.coneOuterGain;

                gain *= ma_calculate_angular_gain(listenerDirection, relativePosNormalized, listenerInnerAngle, listenerOuterAngle, listenerOuterGain);
            }
        } else {
            /* The sound is right on top of the listener. Don't do any angular attenuation. */
        }


        /* Clamp the gain. */
        gain = ma_clamp(gain, ma_spatializer_get_min_gain(pSpatializer), ma_spatializer_get_max_gain(pSpatializer));

        /*
        The gain needs to be applied per-channel here. The spatialization code below will be changing the per-channel
        gains which will then eventually be passed into the gainer which will deal with smoothing the gain transitions
        to avoid harsh changes in gain.
        */
        for (iChannel = 0; iChannel < channelsOut; iChannel += 1) {
            pSpatializer->pNewChannelGainsOut[iChannel] = gain;
        }

        /*
        Convert to our output channel count. If the listener is disabled we just output silence here. We cannot ignore
        the whole section of code here because we need to update some internal spatialization state.
        */
        if (ma_spatializer_listener_is_enabled(pListener)) {
            ma_channel_map_apply_f32((float*)pFramesOut, pChannelMapOut, channelsOut, (const float*)pFramesIn, pChannelMapIn, channelsIn, frameCount, ma_channel_mix_mode_rectangular, ma_mono_expansion_mode_default);
        } else {
            ma_silence_pcm_frames(pFramesOut, frameCount, ma_format_f32, pSpatializer->channelsOut);
        }


        /*
        Panning. This is where we'll apply the gain and convert to the output channel count. We have an optimized path for
        when we're converting to a mono stream. In that case we don't really need to do any panning - we just apply the
        gain to the final output.
        */
        /*printf("distance=%f; gain=%f\n", distance, gain);*/

        /* We must have a valid channel map here to ensure we spatialize properly. */
        MA_ASSERT(pChannelMapOut != NULL);

        /*
        We're not converting to mono so we'll want to apply some panning. This is where the feeling of something being
        to the left, right, infront or behind the listener is calculated. I'm just using a basic model here. Note that
        the code below is not based on any specific algorithm. I'm just implementing this off the top of my head and
        seeing how it goes. There might be better ways to do this.

        To determine the direction of the sound relative to a speaker I'm using dot products. Each speaker is given a
        direction. For example, the left channel in a stereo system will be -1 on the X axis and the right channel will
        be +1 on the X axis. A dot product is performed against the direction vector of the channel and the normalized
        position of the sound.
        */

        /*
        Calculate our per-channel gains. We do this based on the normalized relative position of the sound and it's
        relation to the direction of the channel.
        */
        if (distance > 0) {
            ma_vec3f unitPos = relativePos;
            float distanceInv = 1/distance;
            unitPos.x *= distanceInv;
            unitPos.y *= distanceInv;
            unitPos.z *= distanceInv;

            for (iChannel = 0; iChannel < channelsOut; iChannel += 1) {
                ma_channel channelOut;
                float d;
                float dMin;

                channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannel);
                if (ma_is_spatial_channel_position(channelOut)) {
                    d = ma_mix_f32_fast(1, ma_vec3f_dot(unitPos, ma_get_channel_direction(channelOut)), ma_spatializer_get_directional_attenuation_factor(pSpatializer));
                } else {
                    d = 1;  /* It's not a spatial channel so there's no real notion of direction. */
                }

                /*
                In my testing, if the panning effect is too aggressive it makes spatialization feel uncomfortable.
                The "dMin" variable below is used to control the aggressiveness of the panning effect. When set to
                0, panning will be most extreme and any sounds that are positioned on the opposite side of the
                speaker will be completely silent from that speaker. Not only does this feel uncomfortable, it
                doesn't even remotely represent the real world at all because sounds that come from your right side
                are still clearly audible from your left side. Setting "dMin" to 1 will result in no panning at
                all, which is also not ideal. By setting it to something greater than 0, the spatialization effect
                becomes much less dramatic and a lot more bearable.

                Summary: 0 = more extreme panning; 1 = no panning.
                */
                dMin = pSpatializer->minSpatializationChannelGain;

                /*
                At this point, "d" will be positive if the sound is on the same side as the channel and negative if
                it's on the opposite side. It will be in the range of -1..1. There's two ways I can think of to
                calculate a panning value. The first is to simply convert it to 0..1, however this has a problem
                which I'm not entirely happy with. Considering a stereo system, when a sound is positioned right
                in front of the listener it'll result in each speaker getting a gain of 0.5. I don't know if I like
                the idea of having a scaling factor of 0.5 being applied to a sound when it's sitting right in front
                of the listener. I would intuitively expect that to be played at full volume, or close to it.

                The second idea I think of is to only apply a reduction in gain when the sound is on the opposite
                side of the speaker. That is, reduce the gain only when the dot product is negative. The problem
                with this is that there will not be any attenuation as the sound sweeps around the 180 degrees
                where the dot product is positive. The idea with this option is that you leave the gain at 1 when
                the sound is being played on the same side as the speaker and then you just reduce the volume when
                the sound is on the other side.

                The summarize, I think the first option should give a better sense of spatialization, but the second
                option is better for preserving the sound's power.

                UPDATE: In my testing, I find the first option to sound better. You can feel the sense of space a
                bit better, but you can also hear the reduction in volume when it's right in front.
                */
                #if 1
                {
                    /*
                    Scale the dot product from -1..1 to 0..1. Will result in a sound directly in front losing power
                    by being played at 0.5 gain.
                    */
                    d = (d + 1) * 0.5f;  /* -1..1 to 0..1 */
                    d = ma_max(d, dMin);
                    pSpatializer->pNewChannelGainsOut[iChannel] *= d;
                }
                #else
                {
                    /*
                    Only reduce the volume of the sound if it's on the opposite side. This path keeps the volume more
                    consistent, but comes at the expense of a worse sense of space and positioning.
                    */
                    if (d < 0) {
                        d += 1; /* Move into the positive range. */
                        d = ma_max(d, dMin);
                        channelGainsOut[iChannel] *= d;
                    }
                }
                #endif
            }
        } else {
            /* Assume the sound is right on top of us. Don't do any panning. */
        }

        /* Now we need to apply the volume to each channel. This needs to run through the gainer to ensure we get a smooth volume transition. */
        ma_gainer_set_gains(&pSpatializer->gainer, pSpatializer->pNewChannelGainsOut);
        ma_gainer_process_pcm_frames(&pSpatializer->gainer, pFramesOut, pFramesOut, frameCount);

        /*
        Before leaving we'll want to update our doppler pitch so that the caller can apply some
        pitch shifting if they desire. Note that we need to negate the relative position here
        because the doppler calculation needs to be source-to-listener, but ours is listener-to-
        source.
        */
        if (dopplerFactor > 0) {
            pSpatializer->dopplerPitch = ma_doppler_pitch(ma_vec3f_sub(ma_spatializer_listener_get_position(pListener), ma_spatializer_get_position(pSpatializer)), ma_spatializer_get_velocity(pSpatializer), listenerVel, speedOfSound, dopplerFactor);
        } else {
            pSpatializer->dopplerPitch = 1;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_spatializer_set_master_volume(ma_spatializer* pSpatializer, float volume)
{
    if (pSpatializer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_gainer_set_master_volume(&pSpatializer->gainer, volume);
}

MA_API ma_result ma_spatializer_get_master_volume(const ma_spatializer* pSpatializer, float* pVolume)
{
    if (pSpatializer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_gainer_get_master_volume(&pSpatializer->gainer, pVolume);
}

MA_API ma_uint32 ma_spatializer_get_input_channels(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return pSpatializer->channelsIn;
}

MA_API ma_uint32 ma_spatializer_get_output_channels(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return pSpatializer->channelsOut;
}

MA_API void ma_spatializer_set_attenuation_model(ma_spatializer* pSpatializer, ma_attenuation_model attenuationModel)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_i32(&pSpatializer->attenuationModel, attenuationModel);
}

MA_API ma_attenuation_model ma_spatializer_get_attenuation_model(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return ma_attenuation_model_none;
    }

    return (ma_attenuation_model)ma_atomic_load_i32(&pSpatializer->attenuationModel);
}

MA_API void ma_spatializer_set_positioning(ma_spatializer* pSpatializer, ma_positioning positioning)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_i32(&pSpatializer->positioning, positioning);
}

MA_API ma_positioning ma_spatializer_get_positioning(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return ma_positioning_absolute;
    }

    return (ma_positioning)ma_atomic_load_i32(&pSpatializer->positioning);
}

MA_API void ma_spatializer_set_rolloff(ma_spatializer* pSpatializer, float rolloff)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->rolloff, rolloff);
}

MA_API float ma_spatializer_get_rolloff(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return ma_atomic_load_f32(&pSpatializer->rolloff);
}

MA_API void ma_spatializer_set_min_gain(ma_spatializer* pSpatializer, float minGain)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->minGain, minGain);
}

MA_API float ma_spatializer_get_min_gain(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return ma_atomic_load_f32(&pSpatializer->minGain);
}

MA_API void ma_spatializer_set_max_gain(ma_spatializer* pSpatializer, float maxGain)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->maxGain, maxGain);
}

MA_API float ma_spatializer_get_max_gain(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return ma_atomic_load_f32(&pSpatializer->maxGain);
}

MA_API void ma_spatializer_set_min_distance(ma_spatializer* pSpatializer, float minDistance)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->minDistance, minDistance);
}

MA_API float ma_spatializer_get_min_distance(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return ma_atomic_load_f32(&pSpatializer->minDistance);
}

MA_API void ma_spatializer_set_max_distance(ma_spatializer* pSpatializer, float maxDistance)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->maxDistance, maxDistance);
}

MA_API float ma_spatializer_get_max_distance(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 0;
    }

    return ma_atomic_load_f32(&pSpatializer->maxDistance);
}

MA_API void ma_spatializer_set_cone(ma_spatializer* pSpatializer, float innerAngleInRadians, float outerAngleInRadians, float outerGain)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->coneInnerAngleInRadians, innerAngleInRadians);
    ma_atomic_exchange_f32(&pSpatializer->coneOuterAngleInRadians, outerAngleInRadians);
    ma_atomic_exchange_f32(&pSpatializer->coneOuterGain,           outerGain);
}

MA_API void ma_spatializer_get_cone(const ma_spatializer* pSpatializer, float* pInnerAngleInRadians, float* pOuterAngleInRadians, float* pOuterGain)
{
    if (pSpatializer == NULL) {
        return;
    }

    if (pInnerAngleInRadians != NULL) {
        *pInnerAngleInRadians = ma_atomic_load_f32(&pSpatializer->coneInnerAngleInRadians);
    }

    if (pOuterAngleInRadians != NULL) {
        *pOuterAngleInRadians = ma_atomic_load_f32(&pSpatializer->coneOuterAngleInRadians);
    }

    if (pOuterGain != NULL) {
        *pOuterGain = ma_atomic_load_f32(&pSpatializer->coneOuterGain);
    }
}

MA_API void ma_spatializer_set_doppler_factor(ma_spatializer* pSpatializer, float dopplerFactor)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->dopplerFactor, dopplerFactor);
}

MA_API float ma_spatializer_get_doppler_factor(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 1;
    }

    return ma_atomic_load_f32(&pSpatializer->dopplerFactor);
}

MA_API void ma_spatializer_set_directional_attenuation_factor(ma_spatializer* pSpatializer, float directionalAttenuationFactor)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_exchange_f32(&pSpatializer->directionalAttenuationFactor, directionalAttenuationFactor);
}

MA_API float ma_spatializer_get_directional_attenuation_factor(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return 1;
    }

    return ma_atomic_load_f32(&pSpatializer->directionalAttenuationFactor);
}

MA_API void ma_spatializer_set_position(ma_spatializer* pSpatializer, float x, float y, float z)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_vec3f_set(&pSpatializer->position, ma_vec3f_init_3f(x, y, z));
}

MA_API ma_vec3f ma_spatializer_get_position(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_atomic_vec3f_get((ma_atomic_vec3f*)&pSpatializer->position);  /* Naughty const-cast. It's just for atomically loading the vec3 which should be safe. */
}

MA_API void ma_spatializer_set_direction(ma_spatializer* pSpatializer, float x, float y, float z)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_vec3f_set(&pSpatializer->direction, ma_vec3f_init_3f(x, y, z));
}

MA_API ma_vec3f ma_spatializer_get_direction(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return ma_vec3f_init_3f(0, 0, -1);
    }

    return ma_atomic_vec3f_get((ma_atomic_vec3f*)&pSpatializer->direction); /* Naughty const-cast. It's just for atomically loading the vec3 which should be safe. */
}

MA_API void ma_spatializer_set_velocity(ma_spatializer* pSpatializer, float x, float y, float z)
{
    if (pSpatializer == NULL) {
        return;
    }

    ma_atomic_vec3f_set(&pSpatializer->velocity, ma_vec3f_init_3f(x, y, z));
}

MA_API ma_vec3f ma_spatializer_get_velocity(const ma_spatializer* pSpatializer)
{
    if (pSpatializer == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_atomic_vec3f_get((ma_atomic_vec3f*)&pSpatializer->velocity);  /* Naughty const-cast. It's just for atomically loading the vec3 which should be safe. */
}

MA_API void ma_spatializer_get_relative_position_and_direction(const ma_spatializer* pSpatializer, const ma_spatializer_listener* pListener, ma_vec3f* pRelativePos, ma_vec3f* pRelativeDir)
{
    if (pRelativePos != NULL) {
        pRelativePos->x = 0;
        pRelativePos->y = 0;
        pRelativePos->z = 0;
    }

    if (pRelativeDir != NULL) {
        pRelativeDir->x = 0;
        pRelativeDir->y = 0;
        pRelativeDir->z = -1;
    }

    if (pSpatializer == NULL) {
        return;
    }

    if (pListener == NULL || ma_spatializer_get_positioning(pSpatializer) == ma_positioning_relative) {
        /* There's no listener or we're using relative positioning. */
        if (pRelativePos != NULL) {
            *pRelativePos = ma_spatializer_get_position(pSpatializer);
        }
        if (pRelativeDir != NULL) {
            *pRelativeDir = ma_spatializer_get_direction(pSpatializer);
        }
    } else {
        ma_vec3f spatializerPosition;
        ma_vec3f spatializerDirection;
        ma_vec3f listenerPosition;
        ma_vec3f listenerDirection;
        ma_vec3f v;
        ma_vec3f axisX;
        ma_vec3f axisY;
        ma_vec3f axisZ;
        float m[4][4];

        spatializerPosition  = ma_spatializer_get_position(pSpatializer);
        spatializerDirection = ma_spatializer_get_direction(pSpatializer);
        listenerPosition     = ma_spatializer_listener_get_position(pListener);
        listenerDirection    = ma_spatializer_listener_get_direction(pListener);

        /*
        We need to calculate the right vector from our forward and up vectors. This is done with
        a cross product.
        */
        axisZ = ma_vec3f_normalize(listenerDirection);                                  /* Normalization required here because we can't trust the caller. */
        axisX = ma_vec3f_normalize(ma_vec3f_cross(axisZ, pListener->config.worldUp));   /* Normalization required here because the world up vector may not be perpendicular with the forward vector. */

        /*
        The calculation of axisX above can result in a zero-length vector if the listener is
        looking straight up on the Y axis. We'll need to fall back to a +X in this case so that
        the calculations below don't fall apart. This is where a quaternion based listener and
        sound orientation would come in handy.
        */
        if (ma_vec3f_len2(axisX) == 0) {
            axisX = ma_vec3f_init_3f(1, 0, 0);
        }

        axisY = ma_vec3f_cross(axisX, axisZ);                                           /* No normalization is required here because axisX and axisZ are unit length and perpendicular. */

        /*
        We need to swap the X axis if we're left handed because otherwise the cross product above
        will have resulted in it pointing in the wrong direction (right handed was assumed in the
        cross products above).
        */
        if (pListener->config.handedness == ma_handedness_left) {
            axisX = ma_vec3f_neg(axisX);
        }

        /* Lookat. */
        m[0][0] =  axisX.x; m[1][0] =  axisX.y; m[2][0] =  axisX.z; m[3][0] = -ma_vec3f_dot(axisX,               listenerPosition);
        m[0][1] =  axisY.x; m[1][1] =  axisY.y; m[2][1] =  axisY.z; m[3][1] = -ma_vec3f_dot(axisY,               listenerPosition);
        m[0][2] = -axisZ.x; m[1][2] = -axisZ.y; m[2][2] = -axisZ.z; m[3][2] = -ma_vec3f_dot(ma_vec3f_neg(axisZ), listenerPosition);
        m[0][3] = 0;        m[1][3] = 0;        m[2][3] = 0;        m[3][3] = 1;

        /*
        Multiply the lookat matrix by the spatializer position to transform it to listener
        space. This allows calculations to work based on the sound being relative to the
        origin which makes things simpler.
        */
        if (pRelativePos != NULL) {
            v = spatializerPosition;
            pRelativePos->x = m[0][0] * v.x + m[1][0] * v.y + m[2][0] * v.z + m[3][0] * 1;
            pRelativePos->y = m[0][1] * v.x + m[1][1] * v.y + m[2][1] * v.z + m[3][1] * 1;
            pRelativePos->z = m[0][2] * v.x + m[1][2] * v.y + m[2][2] * v.z + m[3][2] * 1;
        }

        /*
        The direction of the sound needs to also be transformed so that it's relative to the
        rotation of the listener.
        */
        if (pRelativeDir != NULL) {
            v = spatializerDirection;
            pRelativeDir->x = m[0][0] * v.x + m[1][0] * v.y + m[2][0] * v.z;
            pRelativeDir->y = m[0][1] * v.x + m[1][1] * v.y + m[2][1] * v.z;
            pRelativeDir->z = m[0][2] * v.x + m[1][2] * v.y + m[2][2] * v.z;
        }
    }
}




/**************************************************************************************************************************************************************

Resampling

**************************************************************************************************************************************************************/
MA_API ma_linear_resampler_config ma_linear_resampler_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut)
{
    ma_linear_resampler_config config;
    MA_ZERO_OBJECT(&config);
    config.format           = format;
    config.channels         = channels;
    config.sampleRateIn     = sampleRateIn;
    config.sampleRateOut    = sampleRateOut;
    config.lpfOrder         = ma_min(MA_DEFAULT_RESAMPLER_LPF_ORDER, MA_MAX_FILTER_ORDER);
    config.lpfNyquistFactor = 1;

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t x0Offset;
    size_t x1Offset;
    size_t lpfOffset;
} ma_linear_resampler_heap_layout;


static void ma_linear_resampler_adjust_timer_for_new_rate(ma_linear_resampler* pResampler, ma_uint32 oldSampleRateOut, ma_uint32 newSampleRateOut)
{
    /*
    So what's happening here? Basically we need to adjust the fractional component of the time advance based on the new rate. The old time advance will
    be based on the old sample rate, but we are needing to adjust it to that it's based on the new sample rate.
    */
    ma_uint32 oldRateTimeWhole = pResampler->inTimeFrac / oldSampleRateOut;  /* <-- This should almost never be anything other than 0, but leaving it here to make this more general and robust just in case. */
    ma_uint32 oldRateTimeFract = pResampler->inTimeFrac % oldSampleRateOut;

    pResampler->inTimeFrac =
         (oldRateTimeWhole * newSampleRateOut) +
        ((oldRateTimeFract * newSampleRateOut) / oldSampleRateOut);

    /* Make sure the fractional part is less than the output sample rate. */
    pResampler->inTimeInt += pResampler->inTimeFrac / pResampler->config.sampleRateOut;
    pResampler->inTimeFrac = pResampler->inTimeFrac % pResampler->config.sampleRateOut;
}

static ma_result ma_linear_resampler_set_rate_internal(ma_linear_resampler* pResampler, void* pHeap, ma_linear_resampler_heap_layout* pHeapLayout, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut, ma_bool32 isResamplerAlreadyInitialized)
{
    ma_result result;
    ma_uint32 gcf;
    ma_uint32 lpfSampleRate;
    double lpfCutoffFrequency;
    ma_lpf_config lpfConfig;
    ma_uint32 oldSampleRateOut; /* Required for adjusting time advance down the bottom. */

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (sampleRateIn == 0 || sampleRateOut == 0) {
        return MA_INVALID_ARGS;
    }

    oldSampleRateOut = pResampler->config.sampleRateOut;

    pResampler->config.sampleRateIn  = sampleRateIn;
    pResampler->config.sampleRateOut = sampleRateOut;

    /* Simplify the sample rate. */
    gcf = ma_gcf_u32(pResampler->config.sampleRateIn, pResampler->config.sampleRateOut);
    pResampler->config.sampleRateIn  /= gcf;
    pResampler->config.sampleRateOut /= gcf;

    /* Always initialize the low-pass filter, even when the order is 0. */
    if (pResampler->config.lpfOrder > MA_MAX_FILTER_ORDER) {
        return MA_INVALID_ARGS;
    }

    lpfSampleRate      = (ma_uint32)(ma_max(pResampler->config.sampleRateIn, pResampler->config.sampleRateOut));
    lpfCutoffFrequency = (   double)(ma_min(pResampler->config.sampleRateIn, pResampler->config.sampleRateOut) * 0.5 * pResampler->config.lpfNyquistFactor);

    lpfConfig = ma_lpf_config_init(pResampler->config.format, pResampler->config.channels, lpfSampleRate, lpfCutoffFrequency, pResampler->config.lpfOrder);

    /*
    If the resampler is already initialized we don't want to do a fresh initialization of the low-pass filter because it will result in the cached frames
    getting cleared. Instead we re-initialize the filter which will maintain any cached frames.
    */
    if (isResamplerAlreadyInitialized) {
        result = ma_lpf_reinit(&lpfConfig, &pResampler->lpf);
    } else {
        result = ma_lpf_init_preallocated(&lpfConfig, ma_offset_ptr(pHeap, pHeapLayout->lpfOffset), &pResampler->lpf);
    }

    if (result != MA_SUCCESS) {
        return result;
    }


    pResampler->inAdvanceInt  = pResampler->config.sampleRateIn / pResampler->config.sampleRateOut;
    pResampler->inAdvanceFrac = pResampler->config.sampleRateIn % pResampler->config.sampleRateOut;

    /* Our timer was based on the old rate. We need to adjust it so that it's based on the new rate. */
    ma_linear_resampler_adjust_timer_for_new_rate(pResampler, oldSampleRateOut, pResampler->config.sampleRateOut);

    return MA_SUCCESS;
}

static ma_result ma_linear_resampler_get_heap_layout(const ma_linear_resampler_config* pConfig, ma_linear_resampler_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->format != ma_format_f32 && pConfig->format != ma_format_s16) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* x0 */
    pHeapLayout->x0Offset = pHeapLayout->sizeInBytes;
    if (pConfig->format == ma_format_f32) {
        pHeapLayout->sizeInBytes += sizeof(float) * pConfig->channels;
    } else {
        pHeapLayout->sizeInBytes += sizeof(ma_int16) * pConfig->channels;
    }

    /* x1 */
    pHeapLayout->x1Offset = pHeapLayout->sizeInBytes;
    if (pConfig->format == ma_format_f32) {
        pHeapLayout->sizeInBytes += sizeof(float) * pConfig->channels;
    } else {
        pHeapLayout->sizeInBytes += sizeof(ma_int16) * pConfig->channels;
    }

    /* LPF */
    pHeapLayout->lpfOffset = ma_align_64(pHeapLayout->sizeInBytes);
    {
        ma_result result;
        size_t lpfHeapSizeInBytes;
        ma_lpf_config lpfConfig = ma_lpf_config_init(pConfig->format, pConfig->channels, 1, 1, pConfig->lpfOrder);  /* Sample rate and cutoff frequency do not matter. */

        result = ma_lpf_get_heap_size(&lpfConfig, &lpfHeapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += lpfHeapSizeInBytes;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_linear_resampler_get_heap_size(const ma_linear_resampler_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_linear_resampler_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_linear_resampler_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_linear_resampler_init_preallocated(const ma_linear_resampler_config* pConfig, void* pHeap, ma_linear_resampler* pResampler)
{
    ma_result result;
    ma_linear_resampler_heap_layout heapLayout;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pResampler);

    result = ma_linear_resampler_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pResampler->config = *pConfig;

    pResampler->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    if (pConfig->format == ma_format_f32) {
        pResampler->x0.f32 = (float*)ma_offset_ptr(pHeap, heapLayout.x0Offset);
        pResampler->x1.f32 = (float*)ma_offset_ptr(pHeap, heapLayout.x1Offset);
    } else {
        pResampler->x0.s16 = (ma_int16*)ma_offset_ptr(pHeap, heapLayout.x0Offset);
        pResampler->x1.s16 = (ma_int16*)ma_offset_ptr(pHeap, heapLayout.x1Offset);
    }

    /* Setting the rate will set up the filter and time advances for us. */
    result = ma_linear_resampler_set_rate_internal(pResampler, pHeap, &heapLayout, pConfig->sampleRateIn, pConfig->sampleRateOut, /* isResamplerAlreadyInitialized = */ MA_FALSE);
    if (result != MA_SUCCESS) {
        return result;
    }

    pResampler->inTimeInt  = 1;  /* Set this to one to force an input sample to always be loaded for the first output frame. */
    pResampler->inTimeFrac = 0;

    return MA_SUCCESS;
}

MA_API ma_result ma_linear_resampler_init(const ma_linear_resampler_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_linear_resampler* pResampler)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_linear_resampler_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_linear_resampler_init_preallocated(pConfig, pHeap, pResampler);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pResampler->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_linear_resampler_uninit(ma_linear_resampler* pResampler, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pResampler == NULL) {
        return;
    }

    ma_lpf_uninit(&pResampler->lpf, pAllocationCallbacks);

    if (pResampler->_ownsHeap) {
        ma_free(pResampler->_pHeap, pAllocationCallbacks);
    }
}

static MA_INLINE ma_int16 ma_linear_resampler_mix_s16(ma_int16 x, ma_int16 y, ma_int32 a, const ma_int32 shift)
{
    ma_int32 b;
    ma_int32 c;
    ma_int32 r;

    MA_ASSERT(a <= (1<<shift));

    b = x * ((1<<shift) - a);
    c = y * a;
    r = b + c;

    return (ma_int16)(r >> shift);
}

static void ma_linear_resampler_interpolate_frame_s16(ma_linear_resampler* pResampler, ma_int16* MA_RESTRICT pFrameOut)
{
    ma_uint32 c;
    ma_uint32 a;
    const ma_uint32 channels = pResampler->config.channels;
    const ma_uint32 shift = 12;

    MA_ASSERT(pResampler != NULL);
    MA_ASSERT(pFrameOut  != NULL);

    a = (pResampler->inTimeFrac << shift) / pResampler->config.sampleRateOut;

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        ma_int16 s = ma_linear_resampler_mix_s16(pResampler->x0.s16[c], pResampler->x1.s16[c], a, shift);
        pFrameOut[c] = s;
    }
}


static void ma_linear_resampler_interpolate_frame_f32(ma_linear_resampler* pResampler, float* MA_RESTRICT pFrameOut)
{
    ma_uint32 c;
    float a;
    const ma_uint32 channels = pResampler->config.channels;

    MA_ASSERT(pResampler != NULL);
    MA_ASSERT(pFrameOut  != NULL);

    a = (float)pResampler->inTimeFrac / pResampler->config.sampleRateOut;

    MA_ASSUME(channels > 0);
    for (c = 0; c < channels; c += 1) {
        float s = ma_mix_f32_fast(pResampler->x0.f32[c], pResampler->x1.f32[c], a);
        pFrameOut[c] = s;
    }
}

static ma_result ma_linear_resampler_process_pcm_frames_s16_downsample(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    const ma_int16* pFramesInS16;
    /* */ ma_int16* pFramesOutS16;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;

    MA_ASSERT(pResampler     != NULL);
    MA_ASSERT(pFrameCountIn  != NULL);
    MA_ASSERT(pFrameCountOut != NULL);

    pFramesInS16       = (const ma_int16*)pFramesIn;
    pFramesOutS16      = (      ma_int16*)pFramesOut;
    frameCountIn       = *pFrameCountIn;
    frameCountOut      = *pFrameCountOut;
    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    while (framesProcessedOut < frameCountOut) {
        /* Before interpolating we need to load the buffers. When doing this we need to ensure we run every input sample through the filter. */
        while (pResampler->inTimeInt > 0 && frameCountIn > framesProcessedIn) {
            ma_uint32 iChannel;

            if (pFramesInS16 != NULL) {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.s16[iChannel] = pResampler->x1.s16[iChannel];
                    pResampler->x1.s16[iChannel] = pFramesInS16[iChannel];
                }
                pFramesInS16 += pResampler->config.channels;
            } else {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.s16[iChannel] = pResampler->x1.s16[iChannel];
                    pResampler->x1.s16[iChannel] = 0;
                }
            }

            /* Filter. Do not apply filtering if sample rates are the same or else you'll get dangerous glitching. */
            if (pResampler->config.sampleRateIn != pResampler->config.sampleRateOut) {
                ma_lpf_process_pcm_frame_s16(&pResampler->lpf, pResampler->x1.s16, pResampler->x1.s16);
            }

            framesProcessedIn     += 1;
            pResampler->inTimeInt -= 1;
        }

        if (pResampler->inTimeInt > 0) {
            break;  /* Ran out of input data. */
        }

        /* Getting here means the frames have been loaded and filtered and we can generate the next output frame. */
        if (pFramesOutS16 != NULL) {
            MA_ASSERT(pResampler->inTimeInt == 0);
            ma_linear_resampler_interpolate_frame_s16(pResampler, pFramesOutS16);

            pFramesOutS16 += pResampler->config.channels;
        }

        framesProcessedOut += 1;

        /* Advance time forward. */
        pResampler->inTimeInt  += pResampler->inAdvanceInt;
        pResampler->inTimeFrac += pResampler->inAdvanceFrac;
        if (pResampler->inTimeFrac >= pResampler->config.sampleRateOut) {
            pResampler->inTimeFrac -= pResampler->config.sampleRateOut;
            pResampler->inTimeInt  += 1;
        }
    }

    *pFrameCountIn  = framesProcessedIn;
    *pFrameCountOut = framesProcessedOut;

    return MA_SUCCESS;
}

static ma_result ma_linear_resampler_process_pcm_frames_s16_upsample(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    const ma_int16* pFramesInS16;
    /* */ ma_int16* pFramesOutS16;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;

    MA_ASSERT(pResampler     != NULL);
    MA_ASSERT(pFrameCountIn  != NULL);
    MA_ASSERT(pFrameCountOut != NULL);

    pFramesInS16       = (const ma_int16*)pFramesIn;
    pFramesOutS16      = (      ma_int16*)pFramesOut;
    frameCountIn       = *pFrameCountIn;
    frameCountOut      = *pFrameCountOut;
    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    while (framesProcessedOut < frameCountOut) {
        /* Before interpolating we need to load the buffers. */
        while (pResampler->inTimeInt > 0 && frameCountIn > framesProcessedIn) {
            ma_uint32 iChannel;

            if (pFramesInS16 != NULL) {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.s16[iChannel] = pResampler->x1.s16[iChannel];
                    pResampler->x1.s16[iChannel] = pFramesInS16[iChannel];
                }
                pFramesInS16 += pResampler->config.channels;
            } else {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.s16[iChannel] = pResampler->x1.s16[iChannel];
                    pResampler->x1.s16[iChannel] = 0;
                }
            }

            framesProcessedIn     += 1;
            pResampler->inTimeInt -= 1;
        }

        if (pResampler->inTimeInt > 0) {
            break;  /* Ran out of input data. */
        }

        /* Getting here means the frames have been loaded and we can generate the next output frame. */
        if (pFramesOutS16 != NULL) {
            MA_ASSERT(pResampler->inTimeInt == 0);
            ma_linear_resampler_interpolate_frame_s16(pResampler, pFramesOutS16);

            /* Filter. Do not apply filtering if sample rates are the same or else you'll get dangerous glitching. */
            if (pResampler->config.sampleRateIn != pResampler->config.sampleRateOut) {
                ma_lpf_process_pcm_frame_s16(&pResampler->lpf, pFramesOutS16, pFramesOutS16);
            }

            pFramesOutS16 += pResampler->config.channels;
        }

        framesProcessedOut += 1;

        /* Advance time forward. */
        pResampler->inTimeInt  += pResampler->inAdvanceInt;
        pResampler->inTimeFrac += pResampler->inAdvanceFrac;
        if (pResampler->inTimeFrac >= pResampler->config.sampleRateOut) {
            pResampler->inTimeFrac -= pResampler->config.sampleRateOut;
            pResampler->inTimeInt  += 1;
        }
    }

    *pFrameCountIn  = framesProcessedIn;
    *pFrameCountOut = framesProcessedOut;

    return MA_SUCCESS;
}

static ma_result ma_linear_resampler_process_pcm_frames_s16(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    MA_ASSERT(pResampler != NULL);

    if (pResampler->config.sampleRateIn > pResampler->config.sampleRateOut) {
        return ma_linear_resampler_process_pcm_frames_s16_downsample(pResampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    } else {
        return ma_linear_resampler_process_pcm_frames_s16_upsample(pResampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    }
}


static ma_result ma_linear_resampler_process_pcm_frames_f32_downsample(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    const float* pFramesInF32;
    /* */ float* pFramesOutF32;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;

    MA_ASSERT(pResampler     != NULL);
    MA_ASSERT(pFrameCountIn  != NULL);
    MA_ASSERT(pFrameCountOut != NULL);

    pFramesInF32       = (const float*)pFramesIn;
    pFramesOutF32      = (      float*)pFramesOut;
    frameCountIn       = *pFrameCountIn;
    frameCountOut      = *pFrameCountOut;
    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    while (framesProcessedOut < frameCountOut) {
        /* Before interpolating we need to load the buffers. When doing this we need to ensure we run every input sample through the filter. */
        while (pResampler->inTimeInt > 0 && frameCountIn > framesProcessedIn) {
            ma_uint32 iChannel;

            if (pFramesInF32 != NULL) {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.f32[iChannel] = pResampler->x1.f32[iChannel];
                    pResampler->x1.f32[iChannel] = pFramesInF32[iChannel];
                }
                pFramesInF32 += pResampler->config.channels;
            } else {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.f32[iChannel] = pResampler->x1.f32[iChannel];
                    pResampler->x1.f32[iChannel] = 0;
                }
            }

            /* Filter. Do not apply filtering if sample rates are the same or else you'll get dangerous glitching. */
            if (pResampler->config.sampleRateIn != pResampler->config.sampleRateOut) {
                ma_lpf_process_pcm_frame_f32(&pResampler->lpf, pResampler->x1.f32, pResampler->x1.f32);
            }

            framesProcessedIn     += 1;
            pResampler->inTimeInt -= 1;
        }

        if (pResampler->inTimeInt > 0) {
            break;  /* Ran out of input data. */
        }

        /* Getting here means the frames have been loaded and filtered and we can generate the next output frame. */
        if (pFramesOutF32 != NULL) {
            MA_ASSERT(pResampler->inTimeInt == 0);
            ma_linear_resampler_interpolate_frame_f32(pResampler, pFramesOutF32);

            pFramesOutF32 += pResampler->config.channels;
        }

        framesProcessedOut += 1;

        /* Advance time forward. */
        pResampler->inTimeInt  += pResampler->inAdvanceInt;
        pResampler->inTimeFrac += pResampler->inAdvanceFrac;
        if (pResampler->inTimeFrac >= pResampler->config.sampleRateOut) {
            pResampler->inTimeFrac -= pResampler->config.sampleRateOut;
            pResampler->inTimeInt  += 1;
        }
    }

    *pFrameCountIn  = framesProcessedIn;
    *pFrameCountOut = framesProcessedOut;

    return MA_SUCCESS;
}

static ma_result ma_linear_resampler_process_pcm_frames_f32_upsample(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    const float* pFramesInF32;
    /* */ float* pFramesOutF32;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;

    MA_ASSERT(pResampler     != NULL);
    MA_ASSERT(pFrameCountIn  != NULL);
    MA_ASSERT(pFrameCountOut != NULL);

    pFramesInF32       = (const float*)pFramesIn;
    pFramesOutF32      = (      float*)pFramesOut;
    frameCountIn       = *pFrameCountIn;
    frameCountOut      = *pFrameCountOut;
    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    while (framesProcessedOut < frameCountOut) {
        /* Before interpolating we need to load the buffers. */
        while (pResampler->inTimeInt > 0 && frameCountIn > framesProcessedIn) {
            ma_uint32 iChannel;

            if (pFramesInF32 != NULL) {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.f32[iChannel] = pResampler->x1.f32[iChannel];
                    pResampler->x1.f32[iChannel] = pFramesInF32[iChannel];
                }
                pFramesInF32 += pResampler->config.channels;
            } else {
                for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
                    pResampler->x0.f32[iChannel] = pResampler->x1.f32[iChannel];
                    pResampler->x1.f32[iChannel] = 0;
                }
            }

            framesProcessedIn     += 1;
            pResampler->inTimeInt -= 1;
        }

        if (pResampler->inTimeInt > 0) {
            break;  /* Ran out of input data. */
        }

        /* Getting here means the frames have been loaded and we can generate the next output frame. */
        if (pFramesOutF32 != NULL) {
            MA_ASSERT(pResampler->inTimeInt == 0);
            ma_linear_resampler_interpolate_frame_f32(pResampler, pFramesOutF32);

            /* Filter. Do not apply filtering if sample rates are the same or else you'll get dangerous glitching. */
            if (pResampler->config.sampleRateIn != pResampler->config.sampleRateOut) {
                ma_lpf_process_pcm_frame_f32(&pResampler->lpf, pFramesOutF32, pFramesOutF32);
            }

            pFramesOutF32 += pResampler->config.channels;
        }

        framesProcessedOut += 1;

        /* Advance time forward. */
        pResampler->inTimeInt  += pResampler->inAdvanceInt;
        pResampler->inTimeFrac += pResampler->inAdvanceFrac;
        if (pResampler->inTimeFrac >= pResampler->config.sampleRateOut) {
            pResampler->inTimeFrac -= pResampler->config.sampleRateOut;
            pResampler->inTimeInt  += 1;
        }
    }

    *pFrameCountIn  = framesProcessedIn;
    *pFrameCountOut = framesProcessedOut;

    return MA_SUCCESS;
}

static ma_result ma_linear_resampler_process_pcm_frames_f32(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    MA_ASSERT(pResampler != NULL);

    if (pResampler->config.sampleRateIn > pResampler->config.sampleRateOut) {
        return ma_linear_resampler_process_pcm_frames_f32_downsample(pResampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    } else {
        return ma_linear_resampler_process_pcm_frames_f32_upsample(pResampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    }
}


MA_API ma_result ma_linear_resampler_process_pcm_frames(ma_linear_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    /*  */ if (pResampler->config.format == ma_format_s16) {
        return ma_linear_resampler_process_pcm_frames_s16(pResampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    } else if (pResampler->config.format == ma_format_f32) {
        return ma_linear_resampler_process_pcm_frames_f32(pResampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    } else {
        /* Should never get here. Getting here means the format is not supported and you didn't check the return value of ma_linear_resampler_init(). */
        MA_ASSERT(MA_FALSE);
        return MA_INVALID_ARGS;
    }
}


MA_API ma_result ma_linear_resampler_set_rate(ma_linear_resampler* pResampler, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut)
{
    return ma_linear_resampler_set_rate_internal(pResampler, NULL, NULL, sampleRateIn, sampleRateOut, /* isResamplerAlreadyInitialized = */ MA_TRUE);
}

MA_API ma_result ma_linear_resampler_set_rate_ratio(ma_linear_resampler* pResampler, float ratioInOut)
{
    ma_uint32 n;
    ma_uint32 d;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ratioInOut <= 0) {
        return MA_INVALID_ARGS;
    }

    d = 1000000;
    n = (ma_uint32)(ratioInOut * d);

    if (n == 0) {
        return MA_INVALID_ARGS; /* Ratio too small. */
    }

    MA_ASSERT(n != 0);

    return ma_linear_resampler_set_rate(pResampler, n, d);
}

MA_API ma_uint64 ma_linear_resampler_get_input_latency(const ma_linear_resampler* pResampler)
{
    if (pResampler == NULL) {
        return 0;
    }

    return 1 + ma_lpf_get_latency(&pResampler->lpf);
}

MA_API ma_uint64 ma_linear_resampler_get_output_latency(const ma_linear_resampler* pResampler)
{
    if (pResampler == NULL) {
        return 0;
    }

    return ma_linear_resampler_get_input_latency(pResampler) * pResampler->config.sampleRateOut / pResampler->config.sampleRateIn;
}

MA_API ma_result ma_linear_resampler_get_required_input_frame_count(const ma_linear_resampler* pResampler, ma_uint64 outputFrameCount, ma_uint64* pInputFrameCount)
{
    ma_uint64 inputFrameCount;

    if (pInputFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    *pInputFrameCount = 0;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (outputFrameCount == 0) {
        return MA_SUCCESS;
    }

    /* Any whole input frames are consumed before the first output frame is generated. */
    inputFrameCount = pResampler->inTimeInt;
    outputFrameCount -= 1;

    /* The rest of the output frames can be calculated in constant time. */
    inputFrameCount += outputFrameCount * pResampler->inAdvanceInt;
    inputFrameCount += (pResampler->inTimeFrac + (outputFrameCount * pResampler->inAdvanceFrac)) / pResampler->config.sampleRateOut;

    *pInputFrameCount = inputFrameCount;

    return MA_SUCCESS;
}

MA_API ma_result ma_linear_resampler_get_expected_output_frame_count(const ma_linear_resampler* pResampler, ma_uint64 inputFrameCount, ma_uint64* pOutputFrameCount)
{
    ma_uint64 outputFrameCount;
    ma_uint64 preliminaryInputFrameCountFromFrac;
    ma_uint64 preliminaryInputFrameCount;

    if (pOutputFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    *pOutputFrameCount = 0;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    The first step is to get a preliminary output frame count. This will either be exactly equal to what we need, or less by 1. We need to
    determine how many input frames will be consumed by this value. If it's greater than our original input frame count it means we won't
    be able to generate an extra frame because we will have run out of input data. Otherwise we will have enough input for the generation
    of an extra output frame. This add-by-one logic is necessary due to how the data loading logic works when processing frames.
    */
    outputFrameCount = (inputFrameCount * pResampler->config.sampleRateOut) / pResampler->config.sampleRateIn;

    /*
    We need to determine how many *whole* input frames will have been processed to generate our preliminary output frame count. This is
    used in the logic below to determine whether or not we need to add an extra output frame.
    */
    preliminaryInputFrameCountFromFrac = (pResampler->inTimeFrac + outputFrameCount*pResampler->inAdvanceFrac) / pResampler->config.sampleRateOut;
    preliminaryInputFrameCount         = (pResampler->inTimeInt  + outputFrameCount*pResampler->inAdvanceInt ) + preliminaryInputFrameCountFromFrac;

    /*
    If the total number of *whole* input frames that would be required to generate our preliminary output frame count is greater than
    the amount of whole input frames we have available as input we need to *not* add an extra output frame as there won't be enough data
    to actually process. Otherwise we need to add the extra output frame.
    */
    if (preliminaryInputFrameCount <= inputFrameCount) {
        outputFrameCount += 1;
    }

    *pOutputFrameCount = outputFrameCount;

    return MA_SUCCESS;
}

MA_API ma_result ma_linear_resampler_reset(ma_linear_resampler* pResampler)
{
    ma_uint32 iChannel;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Timers need to be cleared back to zero. */
    pResampler->inTimeInt  = 1;  /* Set this to one to force an input sample to always be loaded for the first output frame. */
    pResampler->inTimeFrac = 0;

    /* Cached samples need to be cleared. */
    if (pResampler->config.format == ma_format_f32) {
        for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
            pResampler->x0.f32[iChannel] = 0;
            pResampler->x1.f32[iChannel] = 0;
        }
    } else {
        for (iChannel = 0; iChannel < pResampler->config.channels; iChannel += 1) {
            pResampler->x0.s16[iChannel] = 0;
            pResampler->x1.s16[iChannel] = 0;
        }
    }

    /* The low pass filter needs to have its cache reset. */
    ma_lpf_clear_cache(&pResampler->lpf);

    return MA_SUCCESS;
}



/* Linear resampler backend vtable. */
static ma_linear_resampler_config ma_resampling_backend_get_config__linear(const ma_resampler_config* pConfig)
{
    ma_linear_resampler_config linearConfig;

    linearConfig = ma_linear_resampler_config_init(pConfig->format, pConfig->channels, pConfig->sampleRateIn, pConfig->sampleRateOut);
    linearConfig.lpfOrder = pConfig->linear.lpfOrder;

    return linearConfig;
}

static ma_result ma_resampling_backend_get_heap_size__linear(void* pUserData, const ma_resampler_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_linear_resampler_config linearConfig;

    (void)pUserData;

    linearConfig = ma_resampling_backend_get_config__linear(pConfig);

    return ma_linear_resampler_get_heap_size(&linearConfig, pHeapSizeInBytes);
}

static ma_result ma_resampling_backend_init__linear(void* pUserData, const ma_resampler_config* pConfig, void* pHeap, ma_resampling_backend** ppBackend)
{
    ma_resampler* pResampler = (ma_resampler*)pUserData;
    ma_result result;
    ma_linear_resampler_config linearConfig;

    (void)pUserData;

    linearConfig = ma_resampling_backend_get_config__linear(pConfig);

    result = ma_linear_resampler_init_preallocated(&linearConfig, pHeap, &pResampler->state.linear);
    if (result != MA_SUCCESS) {
        return result;
    }

    *ppBackend = &pResampler->state.linear;

    return MA_SUCCESS;
}

static void ma_resampling_backend_uninit__linear(void* pUserData, ma_resampling_backend* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
    (void)pUserData;

    ma_linear_resampler_uninit((ma_linear_resampler*)pBackend, pAllocationCallbacks);
}

static ma_result ma_resampling_backend_process__linear(void* pUserData, ma_resampling_backend* pBackend, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    (void)pUserData;

    return ma_linear_resampler_process_pcm_frames((ma_linear_resampler*)pBackend, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
}

static ma_result ma_resampling_backend_set_rate__linear(void* pUserData, ma_resampling_backend* pBackend, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut)
{
    (void)pUserData;

    return ma_linear_resampler_set_rate((ma_linear_resampler*)pBackend, sampleRateIn, sampleRateOut);
}

static ma_uint64 ma_resampling_backend_get_input_latency__linear(void* pUserData, const ma_resampling_backend* pBackend)
{
    (void)pUserData;

    return ma_linear_resampler_get_input_latency((const ma_linear_resampler*)pBackend);
}

static ma_uint64 ma_resampling_backend_get_output_latency__linear(void* pUserData, const ma_resampling_backend* pBackend)
{
    (void)pUserData;

    return ma_linear_resampler_get_output_latency((const ma_linear_resampler*)pBackend);
}

static ma_result ma_resampling_backend_get_required_input_frame_count__linear(void* pUserData, const ma_resampling_backend* pBackend, ma_uint64 outputFrameCount, ma_uint64* pInputFrameCount)
{
    (void)pUserData;

    return ma_linear_resampler_get_required_input_frame_count((const ma_linear_resampler*)pBackend, outputFrameCount, pInputFrameCount);
}

static ma_result ma_resampling_backend_get_expected_output_frame_count__linear(void* pUserData, const ma_resampling_backend* pBackend, ma_uint64 inputFrameCount, ma_uint64* pOutputFrameCount)
{
    (void)pUserData;

    return ma_linear_resampler_get_expected_output_frame_count((const ma_linear_resampler*)pBackend, inputFrameCount, pOutputFrameCount);
}

static ma_result ma_resampling_backend_reset__linear(void* pUserData, ma_resampling_backend* pBackend)
{
    (void)pUserData;

    return ma_linear_resampler_reset((ma_linear_resampler*)pBackend);
}

static ma_resampling_backend_vtable g_ma_linear_resampler_vtable =
{
    ma_resampling_backend_get_heap_size__linear,
    ma_resampling_backend_init__linear,
    ma_resampling_backend_uninit__linear,
    ma_resampling_backend_process__linear,
    ma_resampling_backend_set_rate__linear,
    ma_resampling_backend_get_input_latency__linear,
    ma_resampling_backend_get_output_latency__linear,
    ma_resampling_backend_get_required_input_frame_count__linear,
    ma_resampling_backend_get_expected_output_frame_count__linear,
    ma_resampling_backend_reset__linear
};



MA_API ma_resampler_config ma_resampler_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut, ma_resample_algorithm algorithm)
{
    ma_resampler_config config;

    MA_ZERO_OBJECT(&config);
    config.format = format;
    config.channels = channels;
    config.sampleRateIn = sampleRateIn;
    config.sampleRateOut = sampleRateOut;
    config.algorithm = algorithm;

    /* Linear. */
    config.linear.lpfOrder = ma_min(MA_DEFAULT_RESAMPLER_LPF_ORDER, MA_MAX_FILTER_ORDER);

    return config;
}

static ma_result ma_resampler_get_vtable(const ma_resampler_config* pConfig, ma_resampler* pResampler, ma_resampling_backend_vtable** ppVTable, void** ppUserData)
{
    MA_ASSERT(pConfig    != NULL);
    MA_ASSERT(ppVTable   != NULL);
    MA_ASSERT(ppUserData != NULL);

    /* Safety. */
    *ppVTable   = NULL;
    *ppUserData = NULL;

    switch (pConfig->algorithm)
    {
        case ma_resample_algorithm_linear:
        {
            *ppVTable   = &g_ma_linear_resampler_vtable;
            *ppUserData = pResampler;
        } break;

        case ma_resample_algorithm_custom:
        {
            *ppVTable   = pConfig->pBackendVTable;
            *ppUserData = pConfig->pBackendUserData;
        } break;

        default: return MA_INVALID_ARGS;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_resampler_get_heap_size(const ma_resampler_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_resampling_backend_vtable* pVTable;
    void* pVTableUserData;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_resampler_get_vtable(pConfig, NULL, &pVTable, &pVTableUserData);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pVTable == NULL || pVTable->onGetHeapSize == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    result = pVTable->onGetHeapSize(pVTableUserData, pConfig, pHeapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_resampler_init_preallocated(const ma_resampler_config* pConfig, void* pHeap, ma_resampler* pResampler)
{
    ma_result result;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pResampler);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    pResampler->_pHeap        = pHeap;
    pResampler->format        = pConfig->format;
    pResampler->channels      = pConfig->channels;
    pResampler->sampleRateIn  = pConfig->sampleRateIn;
    pResampler->sampleRateOut = pConfig->sampleRateOut;

    result = ma_resampler_get_vtable(pConfig, pResampler, &pResampler->pBackendVTable, &pResampler->pBackendUserData);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onInit == NULL) {
        return MA_NOT_IMPLEMENTED;  /* onInit not implemented. */
    }

    result = pResampler->pBackendVTable->onInit(pResampler->pBackendUserData, pConfig, pHeap, &pResampler->pBackend);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_resampler_init(const ma_resampler_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_resampler* pResampler)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_resampler_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_resampler_init_preallocated(pConfig, pHeap, pResampler);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pResampler->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_resampler_uninit(ma_resampler* pResampler, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pResampler == NULL) {
        return;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onUninit == NULL) {
        return;
    }

    pResampler->pBackendVTable->onUninit(pResampler->pBackendUserData, pResampler->pBackend, pAllocationCallbacks);

    if (pResampler->_ownsHeap) {
        ma_free(pResampler->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_resampler_process_pcm_frames(ma_resampler* pResampler, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFrameCountOut == NULL && pFrameCountIn == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onProcess == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pResampler->pBackendVTable->onProcess(pResampler->pBackendUserData, pResampler->pBackend, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
}

MA_API ma_result ma_resampler_set_rate(ma_resampler* pResampler, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut)
{
    ma_result result;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (sampleRateIn == 0 || sampleRateOut == 0) {
        return MA_INVALID_ARGS;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onSetRate == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    result = pResampler->pBackendVTable->onSetRate(pResampler->pBackendUserData, pResampler->pBackend, sampleRateIn, sampleRateOut);
    if (result != MA_SUCCESS) {
        return result;
    }

    pResampler->sampleRateIn  = sampleRateIn;
    pResampler->sampleRateOut = sampleRateOut;

    return MA_SUCCESS;
}

MA_API ma_result ma_resampler_set_rate_ratio(ma_resampler* pResampler, float ratio)
{
    ma_uint32 n;
    ma_uint32 d;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ratio <= 0) {
        return MA_INVALID_ARGS;
    }

    d = 1000;
    n = (ma_uint32)(ratio * d);

    if (n == 0) {
        return MA_INVALID_ARGS; /* Ratio too small. */
    }

    MA_ASSERT(n != 0);

    return ma_resampler_set_rate(pResampler, n, d);
}

MA_API ma_uint64 ma_resampler_get_input_latency(const ma_resampler* pResampler)
{
    if (pResampler == NULL) {
        return 0;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onGetInputLatency == NULL) {
        return 0;
    }

    return pResampler->pBackendVTable->onGetInputLatency(pResampler->pBackendUserData, pResampler->pBackend);
}

MA_API ma_uint64 ma_resampler_get_output_latency(const ma_resampler* pResampler)
{
    if (pResampler == NULL) {
        return 0;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onGetOutputLatency == NULL) {
        return 0;
    }

    return pResampler->pBackendVTable->onGetOutputLatency(pResampler->pBackendUserData, pResampler->pBackend);
}

MA_API ma_result ma_resampler_get_required_input_frame_count(const ma_resampler* pResampler, ma_uint64 outputFrameCount, ma_uint64* pInputFrameCount)
{
    if (pInputFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    *pInputFrameCount = 0;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onGetRequiredInputFrameCount == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pResampler->pBackendVTable->onGetRequiredInputFrameCount(pResampler->pBackendUserData, pResampler->pBackend, outputFrameCount, pInputFrameCount);
}

MA_API ma_result ma_resampler_get_expected_output_frame_count(const ma_resampler* pResampler, ma_uint64 inputFrameCount, ma_uint64* pOutputFrameCount)
{
    if (pOutputFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    *pOutputFrameCount = 0;

    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onGetExpectedOutputFrameCount == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pResampler->pBackendVTable->onGetExpectedOutputFrameCount(pResampler->pBackendUserData, pResampler->pBackend, inputFrameCount, pOutputFrameCount);
}

MA_API ma_result ma_resampler_reset(ma_resampler* pResampler)
{
    if (pResampler == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pResampler->pBackendVTable == NULL || pResampler->pBackendVTable->onReset == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pResampler->pBackendVTable->onReset(pResampler->pBackendUserData, pResampler->pBackend);
}

/**************************************************************************************************************************************************************

Channel Conversion

**************************************************************************************************************************************************************/
#ifndef MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT
#define MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT  12
#endif

#define MA_PLANE_LEFT      0
#define MA_PLANE_RIGHT     1
#define MA_PLANE_FRONT     2
#define MA_PLANE_BACK      3
#define MA_PLANE_BOTTOM    4
#define MA_PLANE_TOP       5

static float g_maChannelPlaneRatios[MA_CHANNEL_POSITION_COUNT][6] = {
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_NONE */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_MONO */
    { 0.5f,  0.0f,  0.5f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_FRONT_LEFT */
    { 0.0f,  0.5f,  0.5f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_FRONT_RIGHT */
    { 0.0f,  0.0f,  1.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_FRONT_CENTER */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_LFE */
    { 0.5f,  0.0f,  0.0f,  0.5f,  0.0f,  0.0f},  /* MA_CHANNEL_BACK_LEFT */
    { 0.0f,  0.5f,  0.0f,  0.5f,  0.0f,  0.0f},  /* MA_CHANNEL_BACK_RIGHT */
    { 0.25f, 0.0f,  0.75f, 0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_FRONT_LEFT_CENTER */
    { 0.0f,  0.25f, 0.75f, 0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_FRONT_RIGHT_CENTER */
    { 0.0f,  0.0f,  0.0f,  1.0f,  0.0f,  0.0f},  /* MA_CHANNEL_BACK_CENTER */
    { 1.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_SIDE_LEFT */
    { 0.0f,  1.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_SIDE_RIGHT */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  1.0f},  /* MA_CHANNEL_TOP_CENTER */
    { 0.33f, 0.0f,  0.33f, 0.0f,  0.0f,  0.34f}, /* MA_CHANNEL_TOP_FRONT_LEFT */
    { 0.0f,  0.0f,  0.5f,  0.0f,  0.0f,  0.5f},  /* MA_CHANNEL_TOP_FRONT_CENTER */
    { 0.0f,  0.33f, 0.33f, 0.0f,  0.0f,  0.34f}, /* MA_CHANNEL_TOP_FRONT_RIGHT */
    { 0.33f, 0.0f,  0.0f,  0.33f, 0.0f,  0.34f}, /* MA_CHANNEL_TOP_BACK_LEFT */
    { 0.0f,  0.0f,  0.0f,  0.5f,  0.0f,  0.5f},  /* MA_CHANNEL_TOP_BACK_CENTER */
    { 0.0f,  0.33f, 0.0f,  0.33f, 0.0f,  0.34f}, /* MA_CHANNEL_TOP_BACK_RIGHT */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_0 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_1 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_2 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_3 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_4 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_5 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_6 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_7 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_8 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_9 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_10 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_11 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_12 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_13 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_14 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_15 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_16 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_17 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_18 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_19 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_20 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_21 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_22 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_23 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_24 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_25 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_26 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_27 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_28 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_29 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_30 */
    { 0.0f,  0.0f,  0.0f,  0.0f,  0.0f,  0.0f},  /* MA_CHANNEL_AUX_31 */
};

static float ma_calculate_channel_position_rectangular_weight(ma_channel channelPositionA, ma_channel channelPositionB)
{
    /*
    Imagine the following simplified example: You have a single input speaker which is the front/left speaker which you want to convert to
    the following output configuration:

     - front/left
     - side/left
     - back/left

    The front/left output is easy - it the same speaker position so it receives the full contribution of the front/left input. The amount
    of contribution to apply to the side/left and back/left speakers, however, is a bit more complicated.

    Imagine the front/left speaker as emitting audio from two planes - the front plane and the left plane. You can think of the front/left
    speaker emitting half of its total volume from the front, and the other half from the left. Since part of its volume is being emitted
    from the left side, and the side/left and back/left channels also emit audio from the left plane, one would expect that they would
    receive some amount of contribution from front/left speaker. The amount of contribution depends on how many planes are shared between
    the two speakers. Note that in the examples below I've added a top/front/left speaker as an example just to show how the math works
    across 3 spatial dimensions.

    The first thing to do is figure out how each speaker's volume is spread over each of plane:
     - front/left:     2 planes (front and left)      = 1/2 = half its total volume on each plane
     - side/left:      1 plane (left only)            = 1/1 = entire volume from left plane
     - back/left:      2 planes (back and left)       = 1/2 = half its total volume on each plane
     - top/front/left: 3 planes (top, front and left) = 1/3 = one third its total volume on each plane

    The amount of volume each channel contributes to each of its planes is what controls how much it is willing to given and take to other
    channels on the same plane. The volume that is willing to the given by one channel is multiplied by the volume that is willing to be
    taken by the other to produce the final contribution.
    */

    /* Contribution = Sum(Volume to Give * Volume to Take) */
    float contribution =
        g_maChannelPlaneRatios[channelPositionA][0] * g_maChannelPlaneRatios[channelPositionB][0] +
        g_maChannelPlaneRatios[channelPositionA][1] * g_maChannelPlaneRatios[channelPositionB][1] +
        g_maChannelPlaneRatios[channelPositionA][2] * g_maChannelPlaneRatios[channelPositionB][2] +
        g_maChannelPlaneRatios[channelPositionA][3] * g_maChannelPlaneRatios[channelPositionB][3] +
        g_maChannelPlaneRatios[channelPositionA][4] * g_maChannelPlaneRatios[channelPositionB][4] +
        g_maChannelPlaneRatios[channelPositionA][5] * g_maChannelPlaneRatios[channelPositionB][5];

    return contribution;
}

MA_API ma_channel_converter_config ma_channel_converter_config_init(ma_format format, ma_uint32 channelsIn, const ma_channel* pChannelMapIn, ma_uint32 channelsOut, const ma_channel* pChannelMapOut, ma_channel_mix_mode mixingMode)
{
    ma_channel_converter_config config;

    MA_ZERO_OBJECT(&config);
    config.format         = format;
    config.channelsIn     = channelsIn;
    config.channelsOut    = channelsOut;
    config.pChannelMapIn  = pChannelMapIn;
    config.pChannelMapOut = pChannelMapOut;
    config.mixingMode     = mixingMode;

    return config;
}

static ma_int32 ma_channel_converter_float_to_fixed(float x)
{
    return (ma_int32)(x * (1<<MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT));
}

static ma_uint32 ma_channel_map_get_spatial_channel_count(const ma_channel* pChannelMap, ma_uint32 channels)
{
    ma_uint32 spatialChannelCount = 0;
    ma_uint32 iChannel;

    MA_ASSERT(pChannelMap != NULL);
    MA_ASSERT(channels > 0);

    for (iChannel = 0; iChannel < channels; ++iChannel) {
        if (ma_is_spatial_channel_position(ma_channel_map_get_channel(pChannelMap, channels, iChannel))) {
            spatialChannelCount++;
        }
    }

    return spatialChannelCount;
}

static ma_bool32 ma_is_spatial_channel_position(ma_channel channelPosition)
{
    int i;

    if (channelPosition == MA_CHANNEL_NONE || channelPosition == MA_CHANNEL_MONO || channelPosition == MA_CHANNEL_LFE) {
        return MA_FALSE;
    }

    if (channelPosition >= MA_CHANNEL_AUX_0 && channelPosition <= MA_CHANNEL_AUX_31) {
        return MA_FALSE;
    }

    for (i = 0; i < 6; ++i) {   /* Each side of a cube. */
        if (g_maChannelPlaneRatios[channelPosition][i] != 0) {
            return MA_TRUE;
        }
    }

    return MA_FALSE;
}


static ma_bool32 ma_channel_map_is_passthrough(const ma_channel* pChannelMapIn, ma_uint32 channelsIn, const ma_channel* pChannelMapOut, ma_uint32 channelsOut)
{
    if (channelsOut == channelsIn) {
        return ma_channel_map_is_equal(pChannelMapOut, pChannelMapIn, channelsOut);
    } else {
        return MA_FALSE;    /* Channel counts differ, so cannot be a passthrough. */
    }
}

static ma_channel_conversion_path ma_channel_map_get_conversion_path(const ma_channel* pChannelMapIn, ma_uint32 channelsIn, const ma_channel* pChannelMapOut, ma_uint32 channelsOut, ma_channel_mix_mode mode)
{
    if (ma_channel_map_is_passthrough(pChannelMapIn, channelsIn, pChannelMapOut, channelsOut)) {
        return ma_channel_conversion_path_passthrough;
    }

    if (channelsOut == 1 && (pChannelMapOut == NULL || pChannelMapOut[0] == MA_CHANNEL_MONO)) {
        return ma_channel_conversion_path_mono_out;
    }

    if (channelsIn == 1 && (pChannelMapIn == NULL || pChannelMapIn[0] == MA_CHANNEL_MONO)) {
        return ma_channel_conversion_path_mono_in;
    }

    if (mode == ma_channel_mix_mode_custom_weights) {
        return ma_channel_conversion_path_weights;
    }

    /*
    We can use a simple shuffle if both channel maps have the same channel count and all channel
    positions are present in both.
    */
    if (channelsIn == channelsOut) {
        ma_uint32 iChannelIn;
        ma_bool32 areAllChannelPositionsPresent = MA_TRUE;
        for (iChannelIn = 0; iChannelIn < channelsIn; ++iChannelIn) {
            ma_bool32 isInputChannelPositionInOutput = ma_channel_map_contains_channel_position(channelsOut, pChannelMapOut, ma_channel_map_get_channel(pChannelMapIn, channelsIn, iChannelIn));
            if (!isInputChannelPositionInOutput) {
                areAllChannelPositionsPresent = MA_FALSE;
                break;
            }
        }

        if (areAllChannelPositionsPresent) {
            return ma_channel_conversion_path_shuffle;
        }
    }

    /* Getting here means we'll need to use weights. */
    return ma_channel_conversion_path_weights;
}


static ma_result ma_channel_map_build_shuffle_table(const ma_channel* pChannelMapIn, ma_uint32 channelCountIn, const ma_channel* pChannelMapOut, ma_uint32 channelCountOut, ma_uint8* pShuffleTable)
{
    ma_uint32 iChannelIn;
    ma_uint32 iChannelOut;

    if (pShuffleTable == NULL || channelCountIn == 0 || channelCountOut == 0) {
        return MA_INVALID_ARGS;
    }

    /*
    When building the shuffle table we just do a 1:1 mapping based on the first occurrence of a channel. If the
    input channel has more than one occurrence of a channel position, the second one will be ignored.
    */
    for (iChannelOut = 0; iChannelOut < channelCountOut; iChannelOut += 1) {
        ma_channel channelOut;

        /* Default to MA_CHANNEL_INDEX_NULL so that if a mapping is not found it'll be set appropriately. */
        pShuffleTable[iChannelOut] = MA_CHANNEL_INDEX_NULL;

        channelOut = ma_channel_map_get_channel(pChannelMapOut, channelCountOut, iChannelOut);
        for (iChannelIn = 0; iChannelIn < channelCountIn; iChannelIn += 1) {
            ma_channel channelIn;

            channelIn = ma_channel_map_get_channel(pChannelMapIn, channelCountIn, iChannelIn);
            if (channelOut == channelIn) {
                pShuffleTable[iChannelOut] = (ma_uint8)iChannelIn;
                break;
            }

            /*
            Getting here means the channels don't exactly match, but we are going to support some
            relaxed matching for practicality. If, for example, there are two stereo channel maps,
            but one uses front left/right and the other uses side left/right, it makes logical
            sense to just map these. The way we'll do it is we'll check if there is a logical
            corresponding mapping, and if so, apply it, but we will *not* break from the loop,
            thereby giving the loop a chance to find an exact match later which will take priority.
            */
            switch (channelOut)
            {
                /* Left channels. */
                case MA_CHANNEL_FRONT_LEFT:
                case MA_CHANNEL_SIDE_LEFT:
                {
                    switch (channelIn) {
                        case MA_CHANNEL_FRONT_LEFT:
                        case MA_CHANNEL_SIDE_LEFT:
                        {
                            pShuffleTable[iChannelOut] = (ma_uint8)iChannelIn;
                        } break;
                    }
                } break;

                /* Right channels. */
                case MA_CHANNEL_FRONT_RIGHT:
                case MA_CHANNEL_SIDE_RIGHT:
                {
                    switch (channelIn) {
                        case MA_CHANNEL_FRONT_RIGHT:
                        case MA_CHANNEL_SIDE_RIGHT:
                        {
                            pShuffleTable[iChannelOut] = (ma_uint8)iChannelIn;
                        } break;
                    }
                } break;

                default: break;
            }
        }
    }

    return MA_SUCCESS;
}


static void ma_channel_map_apply_shuffle_table_u8(ma_uint8* pFramesOut, ma_uint32 channelsOut, const ma_uint8* pFramesIn, ma_uint32 channelsIn, ma_uint64 frameCount, const ma_uint8* pShuffleTable)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelOut;

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
            ma_uint8 iChannelIn = pShuffleTable[iChannelOut];
            if (iChannelIn < channelsIn) {  /* For safety, and to deal with MA_CHANNEL_INDEX_NULL. */
                pFramesOut[iChannelOut] = pFramesIn[iChannelIn];
            } else {
                pFramesOut[iChannelOut] = 0;
            }
        }

        pFramesOut += channelsOut;
        pFramesIn  += channelsIn;
    }
}

static void ma_channel_map_apply_shuffle_table_s16(ma_int16* pFramesOut, ma_uint32 channelsOut, const ma_int16* pFramesIn, ma_uint32 channelsIn, ma_uint64 frameCount, const ma_uint8* pShuffleTable)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelOut;

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
            ma_uint8 iChannelIn = pShuffleTable[iChannelOut];
            if (iChannelIn < channelsIn) {  /* For safety, and to deal with MA_CHANNEL_INDEX_NULL. */
                pFramesOut[iChannelOut] = pFramesIn[iChannelIn];
            } else {
                pFramesOut[iChannelOut] = 0;
            }
        }

        pFramesOut += channelsOut;
        pFramesIn  += channelsIn;
    }
}

static void ma_channel_map_apply_shuffle_table_s24(ma_uint8* pFramesOut, ma_uint32 channelsOut, const ma_uint8* pFramesIn, ma_uint32 channelsIn, ma_uint64 frameCount, const ma_uint8* pShuffleTable)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelOut;

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
            ma_uint8 iChannelIn = pShuffleTable[iChannelOut];
            if (iChannelIn < channelsIn) {  /* For safety, and to deal with MA_CHANNEL_INDEX_NULL. */
                pFramesOut[iChannelOut*3 + 0] = pFramesIn[iChannelIn*3 + 0];
                pFramesOut[iChannelOut*3 + 1] = pFramesIn[iChannelIn*3 + 1];
                pFramesOut[iChannelOut*3 + 2] = pFramesIn[iChannelIn*3 + 2];
            } else {
                pFramesOut[iChannelOut*3 + 0] = 0;
            }   pFramesOut[iChannelOut*3 + 1] = 0;
        }       pFramesOut[iChannelOut*3 + 2] = 0;

        pFramesOut += channelsOut*3;
        pFramesIn  += channelsIn*3;
    }
}

static void ma_channel_map_apply_shuffle_table_s32(ma_int32* pFramesOut, ma_uint32 channelsOut, const ma_int32* pFramesIn, ma_uint32 channelsIn, ma_uint64 frameCount, const ma_uint8* pShuffleTable)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelOut;

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
            ma_uint8 iChannelIn = pShuffleTable[iChannelOut];
            if (iChannelIn < channelsIn) {  /* For safety, and to deal with MA_CHANNEL_INDEX_NULL. */
                pFramesOut[iChannelOut] = pFramesIn[iChannelIn];
            } else {
                pFramesOut[iChannelOut] = 0;
            }
        }

        pFramesOut += channelsOut;
        pFramesIn  += channelsIn;
    }
}

static void ma_channel_map_apply_shuffle_table_f32(float* pFramesOut, ma_uint32 channelsOut, const float* pFramesIn, ma_uint32 channelsIn, ma_uint64 frameCount, const ma_uint8* pShuffleTable)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelOut;

    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
            ma_uint8 iChannelIn = pShuffleTable[iChannelOut];
            if (iChannelIn < channelsIn) {  /* For safety, and to deal with MA_CHANNEL_INDEX_NULL. */
                pFramesOut[iChannelOut] = pFramesIn[iChannelIn];
            } else {
                pFramesOut[iChannelOut] = 0;
            }
        }

        pFramesOut += channelsOut;
        pFramesIn  += channelsIn;
    }
}

static ma_result ma_channel_map_apply_shuffle_table(void* pFramesOut, ma_uint32 channelsOut, const void* pFramesIn, ma_uint32 channelsIn, ma_uint64 frameCount, const ma_uint8* pShuffleTable, ma_format format)
{
    if (pFramesOut == NULL || pFramesIn == NULL || channelsOut == 0 || pShuffleTable == NULL) {
        return MA_INVALID_ARGS;
    }

    switch (format)
    {
        case ma_format_u8:
        {
            ma_channel_map_apply_shuffle_table_u8((ma_uint8*)pFramesOut, channelsOut, (const ma_uint8*)pFramesIn, channelsIn, frameCount, pShuffleTable);
        } break;

        case ma_format_s16:
        {
            ma_channel_map_apply_shuffle_table_s16((ma_int16*)pFramesOut, channelsOut, (const ma_int16*)pFramesIn, channelsIn, frameCount, pShuffleTable);
        } break;

        case ma_format_s24:
        {
            ma_channel_map_apply_shuffle_table_s24((ma_uint8*)pFramesOut, channelsOut, (const ma_uint8*)pFramesIn, channelsIn, frameCount, pShuffleTable);
        } break;

        case ma_format_s32:
        {
            ma_channel_map_apply_shuffle_table_s32((ma_int32*)pFramesOut, channelsOut, (const ma_int32*)pFramesIn, channelsIn, frameCount, pShuffleTable);
        } break;

        case ma_format_f32:
        {
            ma_channel_map_apply_shuffle_table_f32((float*)pFramesOut, channelsOut, (const float*)pFramesIn, channelsIn, frameCount, pShuffleTable);
        } break;

        default: return MA_INVALID_ARGS;    /* Unknown format. */
    }

    return MA_SUCCESS;
}

static ma_result ma_channel_map_apply_mono_out_f32(float* pFramesOut, const float* pFramesIn, const ma_channel* pChannelMapIn, ma_uint32 channelsIn, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelIn;
    ma_uint32 accumulationCount;

    if (pFramesOut == NULL || pFramesIn == NULL || channelsIn == 0) {
        return MA_INVALID_ARGS;
    }

    /* In this case the output stream needs to be the average of all channels, ignoring NONE. */

    /* A quick pre-processing step to get the accumulation counter since we're ignoring NONE channels. */
    accumulationCount = 0;
    for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
        if (ma_channel_map_get_channel(pChannelMapIn, channelsIn, iChannelIn) != MA_CHANNEL_NONE) {
            accumulationCount += 1;
        }
    }

    if (accumulationCount > 0) {    /* <-- Prevent a division by zero. */
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float accumulation = 0;

            for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
                ma_channel channelIn = ma_channel_map_get_channel(pChannelMapIn, channelsIn, iChannelIn);
                if (channelIn != MA_CHANNEL_NONE) {
                    accumulation += pFramesIn[iChannelIn];
                }
            }

            pFramesOut[0] = accumulation / accumulationCount;
            pFramesOut += 1;
            pFramesIn  += channelsIn;
        }
    } else {
        ma_silence_pcm_frames(pFramesOut, frameCount, ma_format_f32, 1);
    }

    return MA_SUCCESS;
}

static ma_result ma_channel_map_apply_mono_in_f32(float* MA_RESTRICT pFramesOut, const ma_channel* pChannelMapOut, ma_uint32 channelsOut, const float* MA_RESTRICT pFramesIn, ma_uint64 frameCount, ma_mono_expansion_mode monoExpansionMode)
{
    ma_uint64 iFrame;
    ma_uint32 iChannelOut;

    if (pFramesOut == NULL || channelsOut == 0 || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Note that the MA_CHANNEL_NONE channel must be ignored in all cases. */
    switch (monoExpansionMode)
    {
        case ma_mono_expansion_mode_average:
        {
            float weight;
            ma_uint32 validChannelCount = 0;

            for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                if (channelOut != MA_CHANNEL_NONE) {
                    validChannelCount += 1;
                }
            }

            weight = 1.0f / validChannelCount;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                    ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                    if (channelOut != MA_CHANNEL_NONE) {
                        pFramesOut[iChannelOut] = pFramesIn[0] * weight;
                    }
                }

                pFramesOut += channelsOut;
                pFramesIn  += 1;
            }
        } break;

        case ma_mono_expansion_mode_stereo_only:
        {
            if (channelsOut >= 2) {
                ma_uint32 iChannelLeft  = (ma_uint32)-1;
                ma_uint32 iChannelRight = (ma_uint32)-1;

                /*
                We first need to find our stereo channels. We prefer front-left and front-right, but
                if they're not available, we'll also try side-left and side-right. If neither are
                available we'll fall through to the default case below.
                */
                for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                    ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                    if (channelOut == MA_CHANNEL_SIDE_LEFT) {
                        iChannelLeft  = iChannelOut;
                    }
                    if (channelOut == MA_CHANNEL_SIDE_RIGHT) {
                        iChannelRight = iChannelOut;
                    }
                }

                for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                    ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                    if (channelOut == MA_CHANNEL_FRONT_LEFT) {
                        iChannelLeft  = iChannelOut;
                    }
                    if (channelOut == MA_CHANNEL_FRONT_RIGHT) {
                        iChannelRight = iChannelOut;
                    }
                }


                if (iChannelLeft != (ma_uint32)-1 && iChannelRight != (ma_uint32)-1) {
                    /* We found our stereo channels so we can duplicate the signal across those channels. */
                    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                            ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                            if (channelOut != MA_CHANNEL_NONE) {
                                if (iChannelOut == iChannelLeft || iChannelOut == iChannelRight) {
                                    pFramesOut[iChannelOut] = pFramesIn[0];
                                } else {
                                    pFramesOut[iChannelOut] = 0.0f;
                                }
                            }
                        }

                        pFramesOut += channelsOut;
                        pFramesIn  += 1;
                    }

                    break;  /* Get out of the switch. */
                } else {
                    /* Fallthrough. Does not have left and right channels. */
                    goto default_handler;
                }
            } else {
                /* Fallthrough. Does not have stereo channels. */
                goto default_handler;
            }
        };  /* Fallthrough. See comments above. */

        case ma_mono_expansion_mode_duplicate:
        default:
        {
            default_handler:
            {
                if (channelsOut <= MA_MAX_CHANNELS) {
                    ma_bool32 hasEmptyChannel = MA_FALSE;
                    ma_channel channelPositions[MA_MAX_CHANNELS];
                    for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                        channelPositions[iChannelOut] = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                        if (channelPositions[iChannelOut] == MA_CHANNEL_NONE) {
                            hasEmptyChannel = MA_TRUE;
                        }
                    }

                    if (hasEmptyChannel == MA_FALSE) {
                        /*
                        Faster path when there's no MA_CHANNEL_NONE channel positions. This should hopefully
                        help the compiler with auto-vectorization.m
                        */
                        if (channelsOut == 2) {
                        #if defined(MA_SUPPORT_SSE2)
                            if (ma_has_sse2()) {
                                /* We want to do two frames in each iteration. */
                                ma_uint64 unrolledFrameCount = frameCount >> 1;

                                for (iFrame = 0; iFrame < unrolledFrameCount; iFrame += 1) {
                                    __m128 in0 = _mm_set1_ps(pFramesIn[iFrame*2 + 0]);
                                    __m128 in1 = _mm_set1_ps(pFramesIn[iFrame*2 + 1]);
                                    _mm_storeu_ps(&pFramesOut[iFrame*4 + 0], _mm_shuffle_ps(in0, in1, _MM_SHUFFLE(0, 0, 0, 0)));
                                }

                                /* Tail. */
                                iFrame = unrolledFrameCount << 1;
                                goto generic_on_fastpath;
                            } else
                        #endif
                            {
                                for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                                    for (iChannelOut = 0; iChannelOut < 2; iChannelOut += 1) {
                                        pFramesOut[iFrame*2 + iChannelOut] = pFramesIn[iFrame];
                                    }
                                }
                            }
                        } else if (channelsOut == 6) {
                        #if defined(MA_SUPPORT_SSE2)
                            if (ma_has_sse2()) {
                                /* We want to do two frames in each iteration so we can have a multiple of 4 samples. */
                                ma_uint64 unrolledFrameCount = frameCount >> 1;

                                for (iFrame = 0; iFrame < unrolledFrameCount; iFrame += 1) {
                                    __m128 in0 = _mm_set1_ps(pFramesIn[iFrame*2 + 0]);
                                    __m128 in1 = _mm_set1_ps(pFramesIn[iFrame*2 + 1]);

                                    _mm_storeu_ps(&pFramesOut[iFrame*12 + 0], in0);
                                    _mm_storeu_ps(&pFramesOut[iFrame*12 + 4], _mm_shuffle_ps(in0, in1, _MM_SHUFFLE(0, 0, 0, 0)));
                                    _mm_storeu_ps(&pFramesOut[iFrame*12 + 8], in1);
                                }

                                /* Tail. */
                                iFrame = unrolledFrameCount << 1;
                                goto generic_on_fastpath;
                            } else
                        #endif
                            {
                                for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                                    for (iChannelOut = 0; iChannelOut < 6; iChannelOut += 1) {
                                        pFramesOut[iFrame*6 + iChannelOut] = pFramesIn[iFrame];
                                    }
                                }
                            }
                        } else if (channelsOut == 8) {
                        #if defined(MA_SUPPORT_SSE2)
                            if (ma_has_sse2()) {
                                for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                                    __m128 in = _mm_set1_ps(pFramesIn[iFrame]);
                                    _mm_storeu_ps(&pFramesOut[iFrame*8 + 0], in);
                                    _mm_storeu_ps(&pFramesOut[iFrame*8 + 4], in);
                                }
                            } else
                        #endif
                            {
                                for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                                    for (iChannelOut = 0; iChannelOut < 8; iChannelOut += 1) {
                                        pFramesOut[iFrame*8 + iChannelOut] = pFramesIn[iFrame];
                                    }
                                }
                            }
                        } else {
                            iFrame = 0;

                            #if defined(MA_SUPPORT_SSE2)    /* For silencing a warning with non-x86 builds. */
                            generic_on_fastpath:
                            #endif
                            {
                                for (; iFrame < frameCount; iFrame += 1) {
                                    for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                                        pFramesOut[iFrame*channelsOut + iChannelOut] = pFramesIn[iFrame];
                                    }
                                }
                            }
                        }
                    } else {
                        /* Slow path. Need to handle MA_CHANNEL_NONE. */
                        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                            for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                                if (channelPositions[iChannelOut] != MA_CHANNEL_NONE) {
                                    pFramesOut[iFrame*channelsOut + iChannelOut] = pFramesIn[iFrame];
                                }
                            }
                        }
                    }
                } else {
                    /* Slow path. Too many channels to store on the stack. */
                    for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                        for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                            ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                            if (channelOut != MA_CHANNEL_NONE) {
                                pFramesOut[iFrame*channelsOut + iChannelOut] = pFramesIn[iFrame];
                            }
                        }
                    }
                }
            }
        } break;
    }

    return MA_SUCCESS;
}

static void ma_channel_map_apply_f32(float* pFramesOut, const ma_channel* pChannelMapOut, ma_uint32 channelsOut, const float* pFramesIn, const ma_channel* pChannelMapIn, ma_uint32 channelsIn, ma_uint64 frameCount, ma_channel_mix_mode mode, ma_mono_expansion_mode monoExpansionMode)
{
    ma_channel_conversion_path conversionPath = ma_channel_map_get_conversion_path(pChannelMapIn, channelsIn, pChannelMapOut, channelsOut, mode);

    /* Optimized Path: Passthrough */
    if (conversionPath == ma_channel_conversion_path_passthrough) {
        ma_copy_pcm_frames(pFramesOut, pFramesIn, frameCount, ma_format_f32, channelsOut);
        return;
    }

    /* Special Path: Mono Output. */
    if (conversionPath == ma_channel_conversion_path_mono_out) {
        ma_channel_map_apply_mono_out_f32(pFramesOut, pFramesIn, pChannelMapIn, channelsIn, frameCount);
        return;
    }

    /* Special Path: Mono Input. */
    if (conversionPath == ma_channel_conversion_path_mono_in) {
        ma_channel_map_apply_mono_in_f32(pFramesOut, pChannelMapOut, channelsOut, pFramesIn, frameCount, monoExpansionMode);
        return;
    }

    /* Getting here means we aren't running on an optimized conversion path. */
    if (channelsOut <= MA_MAX_CHANNELS) {
        ma_result result;

        if (mode == ma_channel_mix_mode_simple) {
            ma_channel shuffleTable[MA_MAX_CHANNELS];

            result = ma_channel_map_build_shuffle_table(pChannelMapIn, channelsIn, pChannelMapOut, channelsOut, shuffleTable);
            if (result != MA_SUCCESS) {
                return;
            }

            result = ma_channel_map_apply_shuffle_table(pFramesOut, channelsOut, pFramesIn, channelsIn, frameCount, shuffleTable, ma_format_f32);
            if (result != MA_SUCCESS) {
                return;
            }
        } else {
            ma_uint32 iFrame;
            ma_uint32 iChannelOut;
            ma_uint32 iChannelIn;
            float weights[32][32];  /* Do not use MA_MAX_CHANNELS here! */

            /*
            If we have a small enough number of channels, pre-compute the weights. Otherwise we'll just need to
            fall back to a slower path because otherwise we'll run out of stack space.
            */
            if (channelsIn <= ma_countof(weights) && channelsOut <= ma_countof(weights)) {
                /* Pre-compute weights. */
                for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                    ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);
                    for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
                        ma_channel channelIn = ma_channel_map_get_channel(pChannelMapIn, channelsIn, iChannelIn);
                        weights[iChannelOut][iChannelIn] = ma_calculate_channel_position_rectangular_weight(channelOut, channelIn);
                    }
                }

                iFrame = 0;

                /* Experiment: Try an optimized unroll for some specific cases to see how it improves performance. RESULT: Good gains. */
                if (channelsOut == 8) {
                    /* Experiment 2: Expand the inner loop to see what kind of different it makes. RESULT: Small, but worthwhile gain. */
                    if (channelsIn == 2) {
                        for (; iFrame < frameCount; iFrame += 1) {
                            float accumulation[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };

                            accumulation[0] += pFramesIn[iFrame*2 + 0] * weights[0][0];
                            accumulation[1] += pFramesIn[iFrame*2 + 0] * weights[1][0];
                            accumulation[2] += pFramesIn[iFrame*2 + 0] * weights[2][0];
                            accumulation[3] += pFramesIn[iFrame*2 + 0] * weights[3][0];
                            accumulation[4] += pFramesIn[iFrame*2 + 0] * weights[4][0];
                            accumulation[5] += pFramesIn[iFrame*2 + 0] * weights[5][0];
                            accumulation[6] += pFramesIn[iFrame*2 + 0] * weights[6][0];
                            accumulation[7] += pFramesIn[iFrame*2 + 0] * weights[7][0];

                            accumulation[0] += pFramesIn[iFrame*2 + 1] * weights[0][1];
                            accumulation[1] += pFramesIn[iFrame*2 + 1] * weights[1][1];
                            accumulation[2] += pFramesIn[iFrame*2 + 1] * weights[2][1];
                            accumulation[3] += pFramesIn[iFrame*2 + 1] * weights[3][1];
                            accumulation[4] += pFramesIn[iFrame*2 + 1] * weights[4][1];
                            accumulation[5] += pFramesIn[iFrame*2 + 1] * weights[5][1];
                            accumulation[6] += pFramesIn[iFrame*2 + 1] * weights[6][1];
                            accumulation[7] += pFramesIn[iFrame*2 + 1] * weights[7][1];

                            pFramesOut[iFrame*8 + 0] = accumulation[0];
                            pFramesOut[iFrame*8 + 1] = accumulation[1];
                            pFramesOut[iFrame*8 + 2] = accumulation[2];
                            pFramesOut[iFrame*8 + 3] = accumulation[3];
                            pFramesOut[iFrame*8 + 4] = accumulation[4];
                            pFramesOut[iFrame*8 + 5] = accumulation[5];
                            pFramesOut[iFrame*8 + 6] = accumulation[6];
                            pFramesOut[iFrame*8 + 7] = accumulation[7];
                        }
                    } else {
                        /* When outputting to 8 channels, we can do everything in groups of two 4x SIMD operations. */
                        for (; iFrame < frameCount; iFrame += 1) {
                            float accumulation[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };

                            for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
                                accumulation[0] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[0][iChannelIn];
                                accumulation[1] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[1][iChannelIn];
                                accumulation[2] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[2][iChannelIn];
                                accumulation[3] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[3][iChannelIn];
                                accumulation[4] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[4][iChannelIn];
                                accumulation[5] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[5][iChannelIn];
                                accumulation[6] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[6][iChannelIn];
                                accumulation[7] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[7][iChannelIn];
                            }

                            pFramesOut[iFrame*8 + 0] = accumulation[0];
                            pFramesOut[iFrame*8 + 1] = accumulation[1];
                            pFramesOut[iFrame*8 + 2] = accumulation[2];
                            pFramesOut[iFrame*8 + 3] = accumulation[3];
                            pFramesOut[iFrame*8 + 4] = accumulation[4];
                            pFramesOut[iFrame*8 + 5] = accumulation[5];
                            pFramesOut[iFrame*8 + 6] = accumulation[6];
                            pFramesOut[iFrame*8 + 7] = accumulation[7];
                        }
                    }
                } else if (channelsOut == 6) {
                    /*
                    When outputting to 6 channels we unfortunately don't have a nice multiple of 4 to do 4x SIMD operations. Instead we'll
                    expand our weights and do two frames at a time.
                    */
                    for (; iFrame < frameCount; iFrame += 1) {
                        float accumulation[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

                        for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
                            accumulation[0] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[0][iChannelIn];
                            accumulation[1] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[1][iChannelIn];
                            accumulation[2] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[2][iChannelIn];
                            accumulation[3] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[3][iChannelIn];
                            accumulation[4] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[4][iChannelIn];
                            accumulation[5] += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[5][iChannelIn];
                        }

                        pFramesOut[iFrame*6 + 0] = accumulation[0];
                        pFramesOut[iFrame*6 + 1] = accumulation[1];
                        pFramesOut[iFrame*6 + 2] = accumulation[2];
                        pFramesOut[iFrame*6 + 3] = accumulation[3];
                        pFramesOut[iFrame*6 + 4] = accumulation[4];
                        pFramesOut[iFrame*6 + 5] = accumulation[5];
                    }
                }

                /* Leftover frames. */
                for (; iFrame < frameCount; iFrame += 1) {
                    for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                        float accumulation = 0;

                        for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
                            accumulation += pFramesIn[iFrame*channelsIn + iChannelIn] * weights[iChannelOut][iChannelIn];
                        }

                        pFramesOut[iFrame*channelsOut + iChannelOut] = accumulation;
                    }
                }
            } else {
                /* Cannot pre-compute weights because not enough room in stack-allocated buffer. */
                for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                    for (iChannelOut = 0; iChannelOut < channelsOut; iChannelOut += 1) {
                        float accumulation = 0;
                        ma_channel channelOut = ma_channel_map_get_channel(pChannelMapOut, channelsOut, iChannelOut);

                        for (iChannelIn = 0; iChannelIn < channelsIn; iChannelIn += 1) {
                            ma_channel channelIn = ma_channel_map_get_channel(pChannelMapIn, channelsIn, iChannelIn);
                            accumulation += pFramesIn[iFrame*channelsIn + iChannelIn] * ma_calculate_channel_position_rectangular_weight(channelOut, channelIn);
                        }

                        pFramesOut[iFrame*channelsOut + iChannelOut] = accumulation;
                    }
                }
            }
        }
    } else {
        /* Fall back to silence. If you hit this, what are you doing with so many channels?! */
        ma_silence_pcm_frames(pFramesOut, frameCount, ma_format_f32, channelsOut);
    }
}


typedef struct
{
    size_t sizeInBytes;
    size_t channelMapInOffset;
    size_t channelMapOutOffset;
    size_t shuffleTableOffset;
    size_t weightsOffset;
} ma_channel_converter_heap_layout;

static ma_channel_conversion_path ma_channel_converter_config_get_conversion_path(const ma_channel_converter_config* pConfig)
{
    return ma_channel_map_get_conversion_path(pConfig->pChannelMapIn, pConfig->channelsIn, pConfig->pChannelMapOut, pConfig->channelsOut, pConfig->mixingMode);
}

static ma_result ma_channel_converter_get_heap_layout(const ma_channel_converter_config* pConfig, ma_channel_converter_heap_layout* pHeapLayout)
{
    ma_channel_conversion_path conversionPath;

    MA_ASSERT(pHeapLayout != NULL);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channelsIn == 0 || pConfig->channelsOut == 0) {
        return MA_INVALID_ARGS;
    }

    if (!ma_channel_map_is_valid(pConfig->pChannelMapIn, pConfig->channelsIn)) {
        return MA_INVALID_ARGS;
    }

    if (!ma_channel_map_is_valid(pConfig->pChannelMapOut, pConfig->channelsOut)) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Input channel map. Only need to allocate this if we have an input channel map (otherwise default channel map is assumed). */
    pHeapLayout->channelMapInOffset = pHeapLayout->sizeInBytes;
    if (pConfig->pChannelMapIn != NULL) {
        pHeapLayout->sizeInBytes += sizeof(ma_channel) * pConfig->channelsIn;
    }

    /* Output channel map. Only need to allocate this if we have an output channel map (otherwise default channel map is assumed). */
    pHeapLayout->channelMapOutOffset = pHeapLayout->sizeInBytes;
    if (pConfig->pChannelMapOut != NULL) {
        pHeapLayout->sizeInBytes += sizeof(ma_channel) * pConfig->channelsOut;
    }

    /* Alignment for the next section. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    /* Whether or not we use weights of a shuffle table depends on the channel map themselves and the algorithm we've chosen. */
    conversionPath = ma_channel_converter_config_get_conversion_path(pConfig);

    /* Shuffle table */
    pHeapLayout->shuffleTableOffset = pHeapLayout->sizeInBytes;
    if (conversionPath == ma_channel_conversion_path_shuffle) {
        pHeapLayout->sizeInBytes += sizeof(ma_uint8) * pConfig->channelsOut;
    }

    /* Weights */
    pHeapLayout->weightsOffset = pHeapLayout->sizeInBytes;
    if (conversionPath == ma_channel_conversion_path_weights) {
        pHeapLayout->sizeInBytes += sizeof(float*) * pConfig->channelsIn;
        pHeapLayout->sizeInBytes += sizeof(float ) * pConfig->channelsIn * pConfig->channelsOut;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_channel_converter_get_heap_size(const ma_channel_converter_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_channel_converter_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_channel_converter_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_channel_converter_init_preallocated(const ma_channel_converter_config* pConfig, void* pHeap, ma_channel_converter* pConverter)
{
    ma_result result;
    ma_channel_converter_heap_layout heapLayout;

    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pConverter);

    result = ma_channel_converter_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pConverter->_pHeap = pHeap;
    MA_ZERO_MEMORY(pConverter->_pHeap, heapLayout.sizeInBytes);

    pConverter->format      = pConfig->format;
    pConverter->channelsIn  = pConfig->channelsIn;
    pConverter->channelsOut = pConfig->channelsOut;
    pConverter->mixingMode  = pConfig->mixingMode;

    if (pConfig->pChannelMapIn != NULL) {
        pConverter->pChannelMapIn = (ma_channel*)ma_offset_ptr(pHeap, heapLayout.channelMapInOffset);
        ma_channel_map_copy_or_default(pConverter->pChannelMapIn, pConfig->channelsIn, pConfig->pChannelMapIn, pConfig->channelsIn);
    } else {
        pConverter->pChannelMapIn = NULL;   /* Use default channel map. */
    }

    if (pConfig->pChannelMapOut != NULL) {
        pConverter->pChannelMapOut = (ma_channel*)ma_offset_ptr(pHeap, heapLayout.channelMapOutOffset);
        ma_channel_map_copy_or_default(pConverter->pChannelMapOut, pConfig->channelsOut, pConfig->pChannelMapOut, pConfig->channelsOut);
    } else {
        pConverter->pChannelMapOut = NULL;  /* Use default channel map. */
    }

    pConverter->conversionPath = ma_channel_converter_config_get_conversion_path(pConfig);

    if (pConverter->conversionPath == ma_channel_conversion_path_shuffle) {
        pConverter->pShuffleTable = (ma_uint8*)ma_offset_ptr(pHeap, heapLayout.shuffleTableOffset);
        ma_channel_map_build_shuffle_table(pConverter->pChannelMapIn, pConverter->channelsIn, pConverter->pChannelMapOut, pConverter->channelsOut, pConverter->pShuffleTable);
    }

    if (pConverter->conversionPath == ma_channel_conversion_path_weights) {
        ma_uint32 iChannelIn;
        ma_uint32 iChannelOut;

        if (pConverter->format == ma_format_f32) {
            pConverter->weights.f32 = (float**   )ma_offset_ptr(pHeap, heapLayout.weightsOffset);
            for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; iChannelIn += 1) {
                pConverter->weights.f32[iChannelIn] = (float*)ma_offset_ptr(pHeap, heapLayout.weightsOffset + ((sizeof(float*) * pConverter->channelsIn) + (sizeof(float) * pConverter->channelsOut * iChannelIn)));
            }
        } else {
            pConverter->weights.s16 = (ma_int32**)ma_offset_ptr(pHeap, heapLayout.weightsOffset);
            for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; iChannelIn += 1) {
                pConverter->weights.s16[iChannelIn] = (ma_int32*)ma_offset_ptr(pHeap, heapLayout.weightsOffset + ((sizeof(ma_int32*) * pConverter->channelsIn) + (sizeof(ma_int32) * pConverter->channelsOut * iChannelIn)));
            }
        }

        /* Silence our weights by default. */
        for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; iChannelIn += 1) {
            for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; iChannelOut += 1) {
                if (pConverter->format == ma_format_f32) {
                    pConverter->weights.f32[iChannelIn][iChannelOut] = 0.0f;
                } else {
                    pConverter->weights.s16[iChannelIn][iChannelOut] = 0;
                }
            }
        }

        /*
        We now need to fill out our weights table. This is determined by the mixing mode.
        */

        /* In all cases we need to make sure all channels that are present in both channel maps have a 1:1 mapping. */
        for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
            ma_channel channelPosIn = ma_channel_map_get_channel(pConverter->pChannelMapIn, pConverter->channelsIn, iChannelIn);

            for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                ma_channel channelPosOut = ma_channel_map_get_channel(pConverter->pChannelMapOut, pConverter->channelsOut, iChannelOut);

                if (channelPosIn == channelPosOut) {
                    float weight = 1;

                    if (pConverter->format == ma_format_f32) {
                        pConverter->weights.f32[iChannelIn][iChannelOut] = weight;
                    } else {
                        pConverter->weights.s16[iChannelIn][iChannelOut] = ma_channel_converter_float_to_fixed(weight);
                    }
                }
            }
        }

        switch (pConverter->mixingMode)
        {
            case ma_channel_mix_mode_custom_weights:
            {
                if (pConfig->ppWeights == NULL) {
                    return MA_INVALID_ARGS; /* Config specified a custom weights mixing mode, but no custom weights have been specified. */
                }

                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; iChannelIn += 1) {
                    for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; iChannelOut += 1) {
                        float weight = pConfig->ppWeights[iChannelIn][iChannelOut];

                        if (pConverter->format == ma_format_f32) {
                            pConverter->weights.f32[iChannelIn][iChannelOut] = weight;
                        } else {
                            pConverter->weights.s16[iChannelIn][iChannelOut] = ma_channel_converter_float_to_fixed(weight);
                        }
                    }
                }
            } break;

            case ma_channel_mix_mode_simple:
            {
                /*
                In simple mode, only set weights for channels that have exactly matching types, leave the rest at
                zero. The 1:1 mappings have already been covered before this switch statement.
                */
            } break;

            case ma_channel_mix_mode_rectangular:
            default:
            {
                /* Unmapped input channels. */
                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                    ma_channel channelPosIn = ma_channel_map_get_channel(pConverter->pChannelMapIn, pConverter->channelsIn, iChannelIn);

                    if (ma_is_spatial_channel_position(channelPosIn)) {
                        if (!ma_channel_map_contains_channel_position(pConverter->channelsOut, pConverter->pChannelMapOut, channelPosIn)) {
                            for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                                ma_channel channelPosOut = ma_channel_map_get_channel(pConverter->pChannelMapOut, pConverter->channelsOut, iChannelOut);

                                if (ma_is_spatial_channel_position(channelPosOut)) {
                                    float weight = 0;
                                    if (pConverter->mixingMode == ma_channel_mix_mode_rectangular) {
                                        weight = ma_calculate_channel_position_rectangular_weight(channelPosIn, channelPosOut);
                                    }

                                    /* Only apply the weight if we haven't already got some contribution from the respective channels. */
                                    if (pConverter->format == ma_format_f32) {
                                        if (pConverter->weights.f32[iChannelIn][iChannelOut] == 0) {
                                            pConverter->weights.f32[iChannelIn][iChannelOut] = weight;
                                        }
                                    } else {
                                        if (pConverter->weights.s16[iChannelIn][iChannelOut] == 0) {
                                            pConverter->weights.s16[iChannelIn][iChannelOut] = ma_channel_converter_float_to_fixed(weight);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }

                /* Unmapped output channels. */
                for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                    ma_channel channelPosOut = ma_channel_map_get_channel(pConverter->pChannelMapOut, pConverter->channelsOut, iChannelOut);

                    if (ma_is_spatial_channel_position(channelPosOut)) {
                        if (!ma_channel_map_contains_channel_position(pConverter->channelsIn, pConverter->pChannelMapIn, channelPosOut)) {
                            for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                                ma_channel channelPosIn = ma_channel_map_get_channel(pConverter->pChannelMapIn, pConverter->channelsIn, iChannelIn);

                                if (ma_is_spatial_channel_position(channelPosIn)) {
                                    float weight = 0;
                                    if (pConverter->mixingMode == ma_channel_mix_mode_rectangular) {
                                        weight = ma_calculate_channel_position_rectangular_weight(channelPosIn, channelPosOut);
                                    }

                                    /* Only apply the weight if we haven't already got some contribution from the respective channels. */
                                    if (pConverter->format == ma_format_f32) {
                                        if (pConverter->weights.f32[iChannelIn][iChannelOut] == 0) {
                                            pConverter->weights.f32[iChannelIn][iChannelOut] = weight;
                                        }
                                    } else {
                                        if (pConverter->weights.s16[iChannelIn][iChannelOut] == 0) {
                                            pConverter->weights.s16[iChannelIn][iChannelOut] = ma_channel_converter_float_to_fixed(weight);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }

                /* If LFE is in the output channel map but was not present in the input channel map, configure its weight now */
                if (pConfig->calculateLFEFromSpatialChannels) {
                    if (!ma_channel_map_contains_channel_position(pConverter->channelsIn, pConverter->pChannelMapIn, MA_CHANNEL_LFE)) {
                        ma_uint32 spatialChannelCount = ma_channel_map_get_spatial_channel_count(pConverter->pChannelMapIn, pConverter->channelsIn);
                        ma_uint32 iChannelOutLFE;

                        if (spatialChannelCount > 0 && ma_channel_map_find_channel_position(pConverter->channelsOut, pConverter->pChannelMapOut, MA_CHANNEL_LFE, &iChannelOutLFE)) {
                            const float weightForLFE = 1.0f / spatialChannelCount;
                            for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                                const ma_channel channelPosIn = ma_channel_map_get_channel(pConverter->pChannelMapIn, pConverter->channelsIn, iChannelIn);
                                if (ma_is_spatial_channel_position(channelPosIn)) {
                                    if (pConverter->format == ma_format_f32) {
                                        if (pConverter->weights.f32[iChannelIn][iChannelOutLFE] == 0) {
                                            pConverter->weights.f32[iChannelIn][iChannelOutLFE] = weightForLFE;
                                        }
                                    } else {
                                        if (pConverter->weights.s16[iChannelIn][iChannelOutLFE] == 0) {
                                            pConverter->weights.s16[iChannelIn][iChannelOutLFE] = ma_channel_converter_float_to_fixed(weightForLFE);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            } break;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_channel_converter_init(const ma_channel_converter_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_channel_converter* pConverter)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_channel_converter_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_channel_converter_init_preallocated(pConfig, pHeap, pConverter);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pConverter->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_channel_converter_uninit(ma_channel_converter* pConverter, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pConverter == NULL) {
        return;
    }

    if (pConverter->_ownsHeap) {
        ma_free(pConverter->_pHeap, pAllocationCallbacks);
    }
}

static ma_result ma_channel_converter_process_pcm_frames__passthrough(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pFramesOut != NULL);
    MA_ASSERT(pFramesIn  != NULL);

    ma_copy_memory_64(pFramesOut, pFramesIn, frameCount * ma_get_bytes_per_frame(pConverter->format, pConverter->channelsOut));
    return MA_SUCCESS;
}

static ma_result ma_channel_converter_process_pcm_frames__shuffle(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pFramesOut != NULL);
    MA_ASSERT(pFramesIn  != NULL);
    MA_ASSERT(pConverter->channelsIn == pConverter->channelsOut);

    return ma_channel_map_apply_shuffle_table(pFramesOut, pConverter->channelsOut, pFramesIn, pConverter->channelsIn, frameCount, pConverter->pShuffleTable, pConverter->format);
}

static ma_result ma_channel_converter_process_pcm_frames__mono_in(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_uint64 iFrame;

    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pFramesOut != NULL);
    MA_ASSERT(pFramesIn  != NULL);
    MA_ASSERT(pConverter->channelsIn == 1);

    switch (pConverter->format)
    {
        case ma_format_u8:
        {
            /* */ ma_uint8* pFramesOutU8 = (      ma_uint8*)pFramesOut;
            const ma_uint8* pFramesInU8  = (const ma_uint8*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < pConverter->channelsOut; iChannel += 1) {
                    pFramesOutU8[iFrame*pConverter->channelsOut + iChannel] = pFramesInU8[iFrame];
                }
            }
        } break;

        case ma_format_s16:
        {
            /* */ ma_int16* pFramesOutS16 = (      ma_int16*)pFramesOut;
            const ma_int16* pFramesInS16  = (const ma_int16*)pFramesIn;

            if (pConverter->channelsOut == 2) {
                for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                    pFramesOutS16[iFrame*2 + 0] = pFramesInS16[iFrame];
                    pFramesOutS16[iFrame*2 + 1] = pFramesInS16[iFrame];
                }
            } else {
                for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                    ma_uint32 iChannel;
                    for (iChannel = 0; iChannel < pConverter->channelsOut; iChannel += 1) {
                        pFramesOutS16[iFrame*pConverter->channelsOut + iChannel] = pFramesInS16[iFrame];
                    }
                }
            }
        } break;

        case ma_format_s24:
        {
            /* */ ma_uint8* pFramesOutS24 = (      ma_uint8*)pFramesOut;
            const ma_uint8* pFramesInS24  = (const ma_uint8*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < pConverter->channelsOut; iChannel += 1) {
                    ma_uint64 iSampleOut = iFrame*pConverter->channelsOut + iChannel;
                    ma_uint64 iSampleIn  = iFrame;
                    pFramesOutS24[iSampleOut*3 + 0] = pFramesInS24[iSampleIn*3 + 0];
                    pFramesOutS24[iSampleOut*3 + 1] = pFramesInS24[iSampleIn*3 + 1];
                    pFramesOutS24[iSampleOut*3 + 2] = pFramesInS24[iSampleIn*3 + 2];
                }
            }
        } break;

        case ma_format_s32:
        {
            /* */ ma_int32* pFramesOutS32 = (      ma_int32*)pFramesOut;
            const ma_int32* pFramesInS32  = (const ma_int32*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_uint32 iChannel;
                for (iChannel = 0; iChannel < pConverter->channelsOut; iChannel += 1) {
                    pFramesOutS32[iFrame*pConverter->channelsOut + iChannel] = pFramesInS32[iFrame];
                }
            }
        } break;

        case ma_format_f32:
        {
            /* */ float* pFramesOutF32 = (      float*)pFramesOut;
            const float* pFramesInF32  = (const float*)pFramesIn;

            if (pConverter->channelsOut == 2) {
                for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                    pFramesOutF32[iFrame*2 + 0] = pFramesInF32[iFrame];
                    pFramesOutF32[iFrame*2 + 1] = pFramesInF32[iFrame];
                }
            } else {
                for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                    ma_uint32 iChannel;
                    for (iChannel = 0; iChannel < pConverter->channelsOut; iChannel += 1) {
                        pFramesOutF32[iFrame*pConverter->channelsOut + iChannel] = pFramesInF32[iFrame];
                    }
                }
            }
        } break;

        default: return MA_INVALID_OPERATION;   /* Unknown format. */
    }

    return MA_SUCCESS;
}

static ma_result ma_channel_converter_process_pcm_frames__mono_out(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannel;

    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pFramesOut != NULL);
    MA_ASSERT(pFramesIn  != NULL);
    MA_ASSERT(pConverter->channelsOut == 1);

    switch (pConverter->format)
    {
        case ma_format_u8:
        {
            /* */ ma_uint8* pFramesOutU8 = (      ma_uint8*)pFramesOut;
            const ma_uint8* pFramesInU8  = (const ma_uint8*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_int32 t = 0;
                for (iChannel = 0; iChannel < pConverter->channelsIn; iChannel += 1) {
                    t += ma_pcm_sample_u8_to_s16_no_scale(pFramesInU8[iFrame*pConverter->channelsIn + iChannel]);
                }

                pFramesOutU8[iFrame] = ma_clip_u8(t / pConverter->channelsOut);
            }
        } break;

        case ma_format_s16:
        {
            /* */ ma_int16* pFramesOutS16 = (      ma_int16*)pFramesOut;
            const ma_int16* pFramesInS16  = (const ma_int16*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_int32 t = 0;
                for (iChannel = 0; iChannel < pConverter->channelsIn; iChannel += 1) {
                    t += pFramesInS16[iFrame*pConverter->channelsIn + iChannel];
                }

                pFramesOutS16[iFrame] = (ma_int16)(t / pConverter->channelsIn);
            }
        } break;

        case ma_format_s24:
        {
            /* */ ma_uint8* pFramesOutS24 = (      ma_uint8*)pFramesOut;
            const ma_uint8* pFramesInS24  = (const ma_uint8*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_int64 t = 0;
                for (iChannel = 0; iChannel < pConverter->channelsIn; iChannel += 1) {
                    t += ma_pcm_sample_s24_to_s32_no_scale(&pFramesInS24[(iFrame*pConverter->channelsIn + iChannel)*3]);
                }

                ma_pcm_sample_s32_to_s24_no_scale(t / pConverter->channelsIn, &pFramesOutS24[iFrame*3]);
            }
        } break;

        case ma_format_s32:
        {
            /* */ ma_int32* pFramesOutS32 = (      ma_int32*)pFramesOut;
            const ma_int32* pFramesInS32  = (const ma_int32*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                ma_int64 t = 0;
                for (iChannel = 0; iChannel < pConverter->channelsIn; iChannel += 1) {
                    t += pFramesInS32[iFrame*pConverter->channelsIn + iChannel];
                }

                pFramesOutS32[iFrame] = (ma_int32)(t / pConverter->channelsIn);
            }
        } break;

        case ma_format_f32:
        {
            /* */ float* pFramesOutF32 = (      float*)pFramesOut;
            const float* pFramesInF32  = (const float*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; ++iFrame) {
                float t = 0;
                for (iChannel = 0; iChannel < pConverter->channelsIn; iChannel += 1) {
                    t += pFramesInF32[iFrame*pConverter->channelsIn + iChannel];
                }

                pFramesOutF32[iFrame] = t / pConverter->channelsIn;
            }
        } break;

        default: return MA_INVALID_OPERATION;   /* Unknown format. */
    }

    return MA_SUCCESS;
}

static ma_result ma_channel_converter_process_pcm_frames__weights(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    ma_uint32 iFrame;
    ma_uint32 iChannelIn;
    ma_uint32 iChannelOut;

    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pFramesOut != NULL);
    MA_ASSERT(pFramesIn  != NULL);

    /* This is the more complicated case. Each of the output channels is accumulated with 0 or more input channels. */

    /* Clear. */
    ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->format, pConverter->channelsOut));

    /* Accumulate. */
    switch (pConverter->format)
    {
        case ma_format_u8:
        {
            /* */ ma_uint8* pFramesOutU8 = (      ma_uint8*)pFramesOut;
            const ma_uint8* pFramesInU8  = (const ma_uint8*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                    for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                        ma_int16 u8_O = ma_pcm_sample_u8_to_s16_no_scale(pFramesOutU8[iFrame*pConverter->channelsOut + iChannelOut]);
                        ma_int16 u8_I = ma_pcm_sample_u8_to_s16_no_scale(pFramesInU8 [iFrame*pConverter->channelsIn  + iChannelIn ]);
                        ma_int32 s    = (ma_int32)ma_clamp(u8_O + ((u8_I * pConverter->weights.s16[iChannelIn][iChannelOut]) >> MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT), -128, 127);
                        pFramesOutU8[iFrame*pConverter->channelsOut + iChannelOut] = ma_clip_u8((ma_int16)s);
                    }
                }
            }
        } break;

        case ma_format_s16:
        {
            /* */ ma_int16* pFramesOutS16 = (      ma_int16*)pFramesOut;
            const ma_int16* pFramesInS16  = (const ma_int16*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                    for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                        ma_int32 s = pFramesOutS16[iFrame*pConverter->channelsOut + iChannelOut];
                        s += (pFramesInS16[iFrame*pConverter->channelsIn + iChannelIn] * pConverter->weights.s16[iChannelIn][iChannelOut]) >> MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT;

                        pFramesOutS16[iFrame*pConverter->channelsOut + iChannelOut] = (ma_int16)ma_clamp(s, -32768, 32767);
                    }
                }
            }
        } break;

        case ma_format_s24:
        {
            /* */ ma_uint8* pFramesOutS24 = (      ma_uint8*)pFramesOut;
            const ma_uint8* pFramesInS24  = (const ma_uint8*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                    for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                        ma_int64 s24_O = ma_pcm_sample_s24_to_s32_no_scale(&pFramesOutS24[(iFrame*pConverter->channelsOut + iChannelOut)*3]);
                        ma_int64 s24_I = ma_pcm_sample_s24_to_s32_no_scale(&pFramesInS24 [(iFrame*pConverter->channelsIn  + iChannelIn )*3]);
                        ma_int64 s24   = (ma_int32)ma_clamp(s24_O + ((s24_I * pConverter->weights.s16[iChannelIn][iChannelOut]) >> MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT), -8388608, 8388607);
                        ma_pcm_sample_s32_to_s24_no_scale(s24, &pFramesOutS24[(iFrame*pConverter->channelsOut + iChannelOut)*3]);
                    }
                }
            }
        } break;

        case ma_format_s32:
        {
            /* */ ma_int32* pFramesOutS32 = (      ma_int32*)pFramesOut;
            const ma_int32* pFramesInS32  = (const ma_int32*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                    for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                        ma_int64 s = pFramesOutS32[iFrame*pConverter->channelsOut + iChannelOut];
                        s += ((ma_int64)pFramesInS32[iFrame*pConverter->channelsIn + iChannelIn] * pConverter->weights.s16[iChannelIn][iChannelOut]) >> MA_CHANNEL_CONVERTER_FIXED_POINT_SHIFT;

                        pFramesOutS32[iFrame*pConverter->channelsOut + iChannelOut] = ma_clip_s32(s);
                    }
                }
            }
        } break;

        case ma_format_f32:
        {
            /* */ float* pFramesOutF32 = (      float*)pFramesOut;
            const float* pFramesInF32  = (const float*)pFramesIn;

            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannelIn = 0; iChannelIn < pConverter->channelsIn; ++iChannelIn) {
                    for (iChannelOut = 0; iChannelOut < pConverter->channelsOut; ++iChannelOut) {
                        pFramesOutF32[iFrame*pConverter->channelsOut + iChannelOut] += pFramesInF32[iFrame*pConverter->channelsIn + iChannelIn] * pConverter->weights.f32[iChannelIn][iChannelOut];
                    }
                }
            }
        } break;

        default: return MA_INVALID_OPERATION;   /* Unknown format. */
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_channel_converter_process_pcm_frames(ma_channel_converter* pConverter, void* pFramesOut, const void* pFramesIn, ma_uint64 frameCount)
{
    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFramesOut == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFramesIn == NULL) {
        ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->format, pConverter->channelsOut));
        return MA_SUCCESS;
    }

    switch (pConverter->conversionPath)
    {
        case ma_channel_conversion_path_passthrough: return ma_channel_converter_process_pcm_frames__passthrough(pConverter, pFramesOut, pFramesIn, frameCount);
        case ma_channel_conversion_path_mono_out:    return ma_channel_converter_process_pcm_frames__mono_out(pConverter, pFramesOut, pFramesIn, frameCount);
        case ma_channel_conversion_path_mono_in:     return ma_channel_converter_process_pcm_frames__mono_in(pConverter, pFramesOut, pFramesIn, frameCount);
        case ma_channel_conversion_path_shuffle:     return ma_channel_converter_process_pcm_frames__shuffle(pConverter, pFramesOut, pFramesIn, frameCount);
        case ma_channel_conversion_path_weights:
        default:
        {
            return ma_channel_converter_process_pcm_frames__weights(pConverter, pFramesOut, pFramesIn, frameCount);
        }
    }
}

MA_API ma_result ma_channel_converter_get_input_channel_map(const ma_channel_converter* pConverter, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pConverter == NULL || pChannelMap == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_channel_map_copy_or_default(pChannelMap, channelMapCap, pConverter->pChannelMapIn, pConverter->channelsIn);

    return MA_SUCCESS;
}

MA_API ma_result ma_channel_converter_get_output_channel_map(const ma_channel_converter* pConverter, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pConverter == NULL || pChannelMap == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_channel_map_copy_or_default(pChannelMap, channelMapCap, pConverter->pChannelMapOut, pConverter->channelsOut);

    return MA_SUCCESS;
}


/**************************************************************************************************************************************************************

Data Conversion

**************************************************************************************************************************************************************/
MA_API ma_data_converter_config ma_data_converter_config_init_default(void)
{
    ma_data_converter_config config;
    MA_ZERO_OBJECT(&config);

    config.ditherMode = ma_dither_mode_none;
    config.resampling.algorithm = ma_resample_algorithm_linear;
    config.allowDynamicSampleRate = MA_FALSE; /* Disable dynamic sample rates by default because dynamic rate adjustments should be quite rare and it allows an optimization for cases when the in and out sample rates are the same. */

    /* Linear resampling defaults. */
    config.resampling.linear.lpfOrder = 1;

    return config;
}

MA_API ma_data_converter_config ma_data_converter_config_init(ma_format formatIn, ma_format formatOut, ma_uint32 channelsIn, ma_uint32 channelsOut, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut)
{
    ma_data_converter_config config = ma_data_converter_config_init_default();
    config.formatIn      = formatIn;
    config.formatOut     = formatOut;
    config.channelsIn    = channelsIn;
    config.channelsOut   = channelsOut;
    config.sampleRateIn  = sampleRateIn;
    config.sampleRateOut = sampleRateOut;

    return config;
}


typedef struct
{
    size_t sizeInBytes;
    size_t channelConverterOffset;
    size_t resamplerOffset;
} ma_data_converter_heap_layout;

static ma_bool32 ma_data_converter_config_is_resampler_required(const ma_data_converter_config* pConfig)
{
    MA_ASSERT(pConfig != NULL);

    return pConfig->allowDynamicSampleRate || pConfig->sampleRateIn != pConfig->sampleRateOut;
}

static ma_format ma_data_converter_config_get_mid_format(const ma_data_converter_config* pConfig)
{
    MA_ASSERT(pConfig != NULL);

    /*
    We want to avoid as much data conversion as possible. The channel converter and linear
    resampler both support s16 and f32 natively. We need to decide on the format to use for this
    stage. We call this the mid format because it's used in the middle stage of the conversion
    pipeline. If the output format is either s16 or f32 we use that one. If that is not the case it
    will do the same thing for the input format. If it's neither we just use f32. If we are using a
    custom resampling backend, we can only guarantee that f32 will be supported so we'll be forced
    to use that if resampling is required.
    */
    if (ma_data_converter_config_is_resampler_required(pConfig) && pConfig->resampling.algorithm != ma_resample_algorithm_linear) {
        return ma_format_f32;  /* <-- Force f32 since that is the only one we can guarantee will be supported by the resampler. */
    } else {
        /*  */ if (pConfig->formatOut == ma_format_s16 || pConfig->formatOut == ma_format_f32) {
            return pConfig->formatOut;
        } else if (pConfig->formatIn  == ma_format_s16 || pConfig->formatIn  == ma_format_f32) {
            return pConfig->formatIn;
        } else {
            return ma_format_f32;
        }
    }
}

static ma_channel_converter_config ma_channel_converter_config_init_from_data_converter_config(const ma_data_converter_config* pConfig)
{
    ma_channel_converter_config channelConverterConfig;

    MA_ASSERT(pConfig != NULL);

    channelConverterConfig = ma_channel_converter_config_init(ma_data_converter_config_get_mid_format(pConfig), pConfig->channelsIn, pConfig->pChannelMapIn, pConfig->channelsOut, pConfig->pChannelMapOut, pConfig->channelMixMode);
    channelConverterConfig.ppWeights = pConfig->ppChannelWeights;
    channelConverterConfig.calculateLFEFromSpatialChannels = pConfig->calculateLFEFromSpatialChannels;

    return channelConverterConfig;
}

static ma_resampler_config ma_resampler_config_init_from_data_converter_config(const ma_data_converter_config* pConfig)
{
    ma_resampler_config resamplerConfig;
    ma_uint32 resamplerChannels;

    MA_ASSERT(pConfig != NULL);

    /* The resampler is the most expensive part of the conversion process, so we need to do it at the stage where the channel count is at it's lowest. */
    if (pConfig->channelsIn < pConfig->channelsOut) {
        resamplerChannels = pConfig->channelsIn;
    } else {
        resamplerChannels = pConfig->channelsOut;
    }

    resamplerConfig = ma_resampler_config_init(ma_data_converter_config_get_mid_format(pConfig), resamplerChannels, pConfig->sampleRateIn, pConfig->sampleRateOut, pConfig->resampling.algorithm);
    resamplerConfig.linear           = pConfig->resampling.linear;
    resamplerConfig.pBackendVTable   = pConfig->resampling.pBackendVTable;
    resamplerConfig.pBackendUserData = pConfig->resampling.pBackendUserData;

    return resamplerConfig;
}

static ma_result ma_data_converter_get_heap_layout(const ma_data_converter_config* pConfig, ma_data_converter_heap_layout* pHeapLayout)
{
    ma_result result;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channelsIn == 0 || pConfig->channelsOut == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Channel converter. */
    pHeapLayout->channelConverterOffset = pHeapLayout->sizeInBytes;
    {
        size_t heapSizeInBytes;
        ma_channel_converter_config channelConverterConfig = ma_channel_converter_config_init_from_data_converter_config(pConfig);

        result = ma_channel_converter_get_heap_size(&channelConverterConfig, &heapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += heapSizeInBytes;
    }

    /* Resampler. */
    pHeapLayout->resamplerOffset = pHeapLayout->sizeInBytes;
    if (ma_data_converter_config_is_resampler_required(pConfig)) {
        size_t heapSizeInBytes;
        ma_resampler_config resamplerConfig = ma_resampler_config_init_from_data_converter_config(pConfig);

        result = ma_resampler_get_heap_size(&resamplerConfig, &heapSizeInBytes);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->sizeInBytes += heapSizeInBytes;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_data_converter_get_heap_size(const ma_data_converter_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_data_converter_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_data_converter_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_data_converter_init_preallocated(const ma_data_converter_config* pConfig, void* pHeap, ma_data_converter* pConverter)
{
    ma_result result;
    ma_data_converter_heap_layout heapLayout;
    ma_format midFormat;
    ma_bool32 isResamplingRequired;

    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pConverter);

    result = ma_data_converter_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pConverter->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pConverter->formatIn      = pConfig->formatIn;
    pConverter->formatOut     = pConfig->formatOut;
    pConverter->channelsIn    = pConfig->channelsIn;
    pConverter->channelsOut   = pConfig->channelsOut;
    pConverter->sampleRateIn  = pConfig->sampleRateIn;
    pConverter->sampleRateOut = pConfig->sampleRateOut;
    pConverter->ditherMode    = pConfig->ditherMode;

    /*
    Determine if resampling is required. We need to do this so we can determine an appropriate
    mid format to use. If resampling is required, the mid format must be ma_format_f32 since
    that is the only one that is guaranteed to supported by custom resampling backends.
    */
    isResamplingRequired = ma_data_converter_config_is_resampler_required(pConfig);
    midFormat = ma_data_converter_config_get_mid_format(pConfig);


    /* Channel converter. We always initialize this, but we check if it configures itself as a passthrough to determine whether or not it's needed. */
    {
        ma_channel_converter_config channelConverterConfig = ma_channel_converter_config_init_from_data_converter_config(pConfig);

        result = ma_channel_converter_init_preallocated(&channelConverterConfig, ma_offset_ptr(pHeap, heapLayout.channelConverterOffset), &pConverter->channelConverter);
        if (result != MA_SUCCESS) {
            return result;
        }

        /* If the channel converter is not a passthrough we need to enable it. Otherwise we can skip it. */
        if (pConverter->channelConverter.conversionPath != ma_channel_conversion_path_passthrough) {
            pConverter->hasChannelConverter = MA_TRUE;
        }
    }


    /* Resampler. */
    if (isResamplingRequired) {
        ma_resampler_config resamplerConfig = ma_resampler_config_init_from_data_converter_config(pConfig);

        result = ma_resampler_init_preallocated(&resamplerConfig, ma_offset_ptr(pHeap, heapLayout.resamplerOffset), &pConverter->resampler);
        if (result != MA_SUCCESS) {
            return result;
        }

        pConverter->hasResampler = MA_TRUE;
    }


    /* We can simplify pre- and post-format conversion if we have neither channel conversion nor resampling. */
    if (pConverter->hasChannelConverter == MA_FALSE && pConverter->hasResampler == MA_FALSE) {
        /* We have neither channel conversion nor resampling so we'll only need one of pre- or post-format conversion, or none if the input and output formats are the same. */
        if (pConverter->formatIn == pConverter->formatOut) {
            /* The formats are the same so we can just pass through. */
            pConverter->hasPreFormatConversion  = MA_FALSE;
            pConverter->hasPostFormatConversion = MA_FALSE;
        } else {
            /* The formats are different so we need to do either pre- or post-format conversion. It doesn't matter which. */
            pConverter->hasPreFormatConversion  = MA_FALSE;
            pConverter->hasPostFormatConversion = MA_TRUE;
        }
    } else {
        /* We have a channel converter and/or resampler so we'll need channel conversion based on the mid format. */
        if (pConverter->formatIn != midFormat) {
            pConverter->hasPreFormatConversion  = MA_TRUE;
        }
        if (pConverter->formatOut != midFormat) {
            pConverter->hasPostFormatConversion = MA_TRUE;
        }
    }

    /* We can enable passthrough optimizations if applicable. Note that we'll only be able to do this if the sample rate is static. */
    if (pConverter->hasPreFormatConversion  == MA_FALSE &&
        pConverter->hasPostFormatConversion == MA_FALSE &&
        pConverter->hasChannelConverter     == MA_FALSE &&
        pConverter->hasResampler            == MA_FALSE) {
        pConverter->isPassthrough = MA_TRUE;
    }


    /* We now need to determine our execution path. */
    if (pConverter->isPassthrough) {
        pConverter->executionPath = ma_data_converter_execution_path_passthrough;
    } else {
        if (pConverter->channelsIn < pConverter->channelsOut) {
            /* Do resampling first, if necessary. */
            MA_ASSERT(pConverter->hasChannelConverter == MA_TRUE);

            if (pConverter->hasResampler) {
                pConverter->executionPath = ma_data_converter_execution_path_resample_first;
            } else {
                pConverter->executionPath = ma_data_converter_execution_path_channels_only;
            }
        } else {
            /* Do channel conversion first, if necessary. */
            if (pConverter->hasChannelConverter) {
                if (pConverter->hasResampler) {
                    pConverter->executionPath = ma_data_converter_execution_path_channels_first;
                } else {
                    pConverter->executionPath = ma_data_converter_execution_path_channels_only;
                }
            } else {
                /* Channel routing not required. */
                if (pConverter->hasResampler) {
                    pConverter->executionPath = ma_data_converter_execution_path_resample_only;
                } else {
                    pConverter->executionPath = ma_data_converter_execution_path_format_only;
                }
            }
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_data_converter_init(const ma_data_converter_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_converter* pConverter)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_data_converter_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_data_converter_init_preallocated(pConfig, pHeap, pConverter);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pConverter->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_data_converter_uninit(ma_data_converter* pConverter, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pConverter == NULL) {
        return;
    }

    if (pConverter->hasResampler) {
        ma_resampler_uninit(&pConverter->resampler, pAllocationCallbacks);
    }

    ma_channel_converter_uninit(&pConverter->channelConverter, pAllocationCallbacks);

    if (pConverter->_ownsHeap) {
        ma_free(pConverter->_pHeap, pAllocationCallbacks);
    }
}

static ma_result ma_data_converter_process_pcm_frames__passthrough(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 frameCount;

    MA_ASSERT(pConverter != NULL);

    frameCountIn = 0;
    if (pFrameCountIn != NULL) {
        frameCountIn = *pFrameCountIn;
    }

    frameCountOut = 0;
    if (pFrameCountOut != NULL) {
        frameCountOut = *pFrameCountOut;
    }

    frameCount = ma_min(frameCountIn, frameCountOut);

    if (pFramesOut != NULL) {
        if (pFramesIn != NULL) {
            ma_copy_memory_64(pFramesOut, pFramesIn, frameCount * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
        } else {
            ma_zero_memory_64(pFramesOut,            frameCount * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
        }
    }

    if (pFrameCountIn != NULL) {
        *pFrameCountIn = frameCount;
    }
    if (pFrameCountOut != NULL) {
        *pFrameCountOut = frameCount;
    }

    return MA_SUCCESS;
}

static ma_result ma_data_converter_process_pcm_frames__format_only(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 frameCount;

    MA_ASSERT(pConverter != NULL);

    frameCountIn = 0;
    if (pFrameCountIn != NULL) {
        frameCountIn = *pFrameCountIn;
    }

    frameCountOut = 0;
    if (pFrameCountOut != NULL) {
        frameCountOut = *pFrameCountOut;
    }

    frameCount = ma_min(frameCountIn, frameCountOut);

    if (pFramesOut != NULL) {
        if (pFramesIn != NULL) {
            ma_convert_pcm_frames_format(pFramesOut, pConverter->formatOut, pFramesIn, pConverter->formatIn, frameCount, pConverter->channelsIn, pConverter->ditherMode);
        } else {
            ma_zero_memory_64(pFramesOut, frameCount * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
        }
    }

    if (pFrameCountIn != NULL) {
        *pFrameCountIn = frameCount;
    }
    if (pFrameCountOut != NULL) {
        *pFrameCountOut = frameCount;
    }

    return MA_SUCCESS;
}


static ma_result ma_data_converter_process_pcm_frames__resample_with_format_conversion(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;

    MA_ASSERT(pConverter != NULL);

    frameCountIn = 0;
    if (pFrameCountIn != NULL) {
        frameCountIn = *pFrameCountIn;
    }

    frameCountOut = 0;
    if (pFrameCountOut != NULL) {
        frameCountOut = *pFrameCountOut;
    }

    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    while (framesProcessedOut < frameCountOut) {
        ma_uint8 pTempBufferOut[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
        const ma_uint32 tempBufferOutCap = sizeof(pTempBufferOut) / ma_get_bytes_per_frame(pConverter->resampler.format, pConverter->resampler.channels);
        const void* pFramesInThisIteration;
        /* */ void* pFramesOutThisIteration;
        ma_uint64 frameCountInThisIteration;
        ma_uint64 frameCountOutThisIteration;

        if (pFramesIn != NULL) {
            pFramesInThisIteration = ma_offset_ptr(pFramesIn, framesProcessedIn * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
        } else {
            pFramesInThisIteration = NULL;
        }

        if (pFramesOut != NULL) {
            pFramesOutThisIteration = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
        } else {
            pFramesOutThisIteration = NULL;
        }

        /* Do a pre format conversion if necessary. */
        if (pConverter->hasPreFormatConversion) {
            ma_uint8 pTempBufferIn[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
            const ma_uint32 tempBufferInCap = sizeof(pTempBufferIn) / ma_get_bytes_per_frame(pConverter->resampler.format, pConverter->resampler.channels);

            frameCountInThisIteration  = (frameCountIn - framesProcessedIn);
            if (frameCountInThisIteration > tempBufferInCap) {
                frameCountInThisIteration = tempBufferInCap;
            }

            if (pConverter->hasPostFormatConversion) {
               if (frameCountInThisIteration > tempBufferOutCap) {
                   frameCountInThisIteration = tempBufferOutCap;
               }
            }

            if (pFramesInThisIteration != NULL) {
                ma_convert_pcm_frames_format(pTempBufferIn, pConverter->resampler.format, pFramesInThisIteration, pConverter->formatIn, frameCountInThisIteration, pConverter->channelsIn, pConverter->ditherMode);
            } else {
                MA_ZERO_MEMORY(pTempBufferIn, sizeof(pTempBufferIn));
            }

            frameCountOutThisIteration = (frameCountOut - framesProcessedOut);

            if (pConverter->hasPostFormatConversion) {
                /* Both input and output conversion required. Output to the temp buffer. */
                if (frameCountOutThisIteration > tempBufferOutCap) {
                    frameCountOutThisIteration = tempBufferOutCap;
                }

                result = ma_resampler_process_pcm_frames(&pConverter->resampler, pTempBufferIn, &frameCountInThisIteration, pTempBufferOut, &frameCountOutThisIteration);
            } else {
                /* Only pre-format required. Output straight to the output buffer. */
                result = ma_resampler_process_pcm_frames(&pConverter->resampler, pTempBufferIn, &frameCountInThisIteration, pFramesOutThisIteration, &frameCountOutThisIteration);
            }

            if (result != MA_SUCCESS) {
                break;
            }
        } else {
            /* No pre-format required. Just read straight from the input buffer. */
            MA_ASSERT(pConverter->hasPostFormatConversion == MA_TRUE);

            frameCountInThisIteration  = (frameCountIn  - framesProcessedIn);
            frameCountOutThisIteration = (frameCountOut - framesProcessedOut);
            if (frameCountOutThisIteration > tempBufferOutCap) {
                frameCountOutThisIteration = tempBufferOutCap;
            }

            result = ma_resampler_process_pcm_frames(&pConverter->resampler, pFramesInThisIteration, &frameCountInThisIteration, pTempBufferOut, &frameCountOutThisIteration);
            if (result != MA_SUCCESS) {
                break;
            }
        }

        /* If we are doing a post format conversion we need to do that now. */
        if (pConverter->hasPostFormatConversion) {
            if (pFramesOutThisIteration != NULL) {
                ma_convert_pcm_frames_format(pFramesOutThisIteration, pConverter->formatOut, pTempBufferOut, pConverter->resampler.format, frameCountOutThisIteration, pConverter->resampler.channels, pConverter->ditherMode);
            }
        }

        framesProcessedIn  += frameCountInThisIteration;
        framesProcessedOut += frameCountOutThisIteration;

        MA_ASSERT(framesProcessedIn  <= frameCountIn);
        MA_ASSERT(framesProcessedOut <= frameCountOut);

        if (frameCountOutThisIteration == 0) {
            break;  /* Consumed all of our input data. */
        }
    }

    if (pFrameCountIn != NULL) {
        *pFrameCountIn = framesProcessedIn;
    }
    if (pFrameCountOut != NULL) {
        *pFrameCountOut = framesProcessedOut;
    }

    return result;
}

static ma_result ma_data_converter_process_pcm_frames__resample_only(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    MA_ASSERT(pConverter != NULL);

    if (pConverter->hasPreFormatConversion == MA_FALSE && pConverter->hasPostFormatConversion == MA_FALSE) {
        /* Neither pre- nor post-format required. This is simple case where only resampling is required. */
        return ma_resampler_process_pcm_frames(&pConverter->resampler, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    } else {
        /* Format conversion required. */
        return ma_data_converter_process_pcm_frames__resample_with_format_conversion(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
    }
}

static ma_result ma_data_converter_process_pcm_frames__channels_only(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    ma_result result;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 frameCount;

    MA_ASSERT(pConverter != NULL);

    frameCountIn = 0;
    if (pFrameCountIn != NULL) {
        frameCountIn = *pFrameCountIn;
    }

    frameCountOut = 0;
    if (pFrameCountOut != NULL) {
        frameCountOut = *pFrameCountOut;
    }

    frameCount = ma_min(frameCountIn, frameCountOut);

    if (pConverter->hasPreFormatConversion == MA_FALSE && pConverter->hasPostFormatConversion == MA_FALSE) {
        /* No format conversion required. */
        result = ma_channel_converter_process_pcm_frames(&pConverter->channelConverter, pFramesOut, pFramesIn, frameCount);
        if (result != MA_SUCCESS) {
            return result;
        }
    } else {
        /* Format conversion required. */
        ma_uint64 framesProcessed = 0;

        while (framesProcessed < frameCount) {
            ma_uint8 pTempBufferOut[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
            const ma_uint32 tempBufferOutCap = sizeof(pTempBufferOut) / ma_get_bytes_per_frame(pConverter->channelConverter.format, pConverter->channelConverter.channelsOut);
            const void* pFramesInThisIteration;
            /* */ void* pFramesOutThisIteration;
            ma_uint64 frameCountThisIteration;

            if (pFramesIn != NULL) {
                pFramesInThisIteration = ma_offset_ptr(pFramesIn, framesProcessed * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
            } else {
                pFramesInThisIteration = NULL;
            }

            if (pFramesOut != NULL) {
                pFramesOutThisIteration = ma_offset_ptr(pFramesOut, framesProcessed * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
            } else {
                pFramesOutThisIteration = NULL;
            }

            /* Do a pre format conversion if necessary. */
            if (pConverter->hasPreFormatConversion) {
                ma_uint8 pTempBufferIn[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
                const ma_uint32 tempBufferInCap = sizeof(pTempBufferIn) / ma_get_bytes_per_frame(pConverter->channelConverter.format, pConverter->channelConverter.channelsIn);

                frameCountThisIteration = (frameCount - framesProcessed);
                if (frameCountThisIteration > tempBufferInCap) {
                    frameCountThisIteration = tempBufferInCap;
                }

                if (pConverter->hasPostFormatConversion) {
                    if (frameCountThisIteration > tempBufferOutCap) {
                        frameCountThisIteration = tempBufferOutCap;
                    }
                }

                if (pFramesInThisIteration != NULL) {
                    ma_convert_pcm_frames_format(pTempBufferIn, pConverter->channelConverter.format, pFramesInThisIteration, pConverter->formatIn, frameCountThisIteration, pConverter->channelsIn, pConverter->ditherMode);
                } else {
                    MA_ZERO_MEMORY(pTempBufferIn, sizeof(pTempBufferIn));
                }

                if (pConverter->hasPostFormatConversion) {
                    /* Both input and output conversion required. Output to the temp buffer. */
                    result = ma_channel_converter_process_pcm_frames(&pConverter->channelConverter, pTempBufferOut, pTempBufferIn, frameCountThisIteration);
                } else {
                    /* Only pre-format required. Output straight to the output buffer. */
                    result = ma_channel_converter_process_pcm_frames(&pConverter->channelConverter, pFramesOutThisIteration, pTempBufferIn, frameCountThisIteration);
                }

                if (result != MA_SUCCESS) {
                    break;
                }
            } else {
                /* No pre-format required. Just read straight from the input buffer. */
                MA_ASSERT(pConverter->hasPostFormatConversion == MA_TRUE);

                frameCountThisIteration = (frameCount - framesProcessed);
                if (frameCountThisIteration > tempBufferOutCap) {
                    frameCountThisIteration = tempBufferOutCap;
                }

                result = ma_channel_converter_process_pcm_frames(&pConverter->channelConverter, pTempBufferOut, pFramesInThisIteration, frameCountThisIteration);
                if (result != MA_SUCCESS) {
                    break;
                }
            }

            /* If we are doing a post format conversion we need to do that now. */
            if (pConverter->hasPostFormatConversion) {
                if (pFramesOutThisIteration != NULL) {
                    ma_convert_pcm_frames_format(pFramesOutThisIteration, pConverter->formatOut, pTempBufferOut, pConverter->channelConverter.format, frameCountThisIteration, pConverter->channelConverter.channelsOut, pConverter->ditherMode);
                }
            }

            framesProcessed += frameCountThisIteration;
        }
    }

    if (pFrameCountIn != NULL) {
        *pFrameCountIn = frameCount;
    }
    if (pFrameCountOut != NULL) {
        *pFrameCountOut = frameCount;
    }

    return MA_SUCCESS;
}

static ma_result ma_data_converter_process_pcm_frames__resample_first(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    ma_result result;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;
    ma_uint8  pTempBufferIn[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];   /* In resampler format. */
    ma_uint64 tempBufferInCap;
    ma_uint8  pTempBufferMid[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];  /* In resampler format, channel converter input format. */
    ma_uint64 tempBufferMidCap;
    ma_uint8  pTempBufferOut[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];  /* In channel converter output format. */
    ma_uint64 tempBufferOutCap;

    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pConverter->resampler.format   == pConverter->channelConverter.format);
    MA_ASSERT(pConverter->resampler.channels == pConverter->channelConverter.channelsIn);
    MA_ASSERT(pConverter->resampler.channels <  pConverter->channelConverter.channelsOut);

    frameCountIn = 0;
    if (pFrameCountIn != NULL) {
        frameCountIn = *pFrameCountIn;
    }

    frameCountOut = 0;
    if (pFrameCountOut != NULL) {
        frameCountOut = *pFrameCountOut;
    }

    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    tempBufferInCap  = sizeof(pTempBufferIn)  / ma_get_bytes_per_frame(pConverter->resampler.format, pConverter->resampler.channels);
    tempBufferMidCap = sizeof(pTempBufferIn)  / ma_get_bytes_per_frame(pConverter->resampler.format, pConverter->resampler.channels);
    tempBufferOutCap = sizeof(pTempBufferOut) / ma_get_bytes_per_frame(pConverter->channelConverter.format, pConverter->channelConverter.channelsOut);

    while (framesProcessedOut < frameCountOut) {
        ma_uint64 frameCountInThisIteration;
        ma_uint64 frameCountOutThisIteration;
        const void* pRunningFramesIn = NULL;
        void* pRunningFramesOut = NULL;
        const void* pResampleBufferIn;
        void* pChannelsBufferOut;

        if (pFramesIn != NULL) {
            pRunningFramesIn  = ma_offset_ptr(pFramesIn,  framesProcessedIn  * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
        }
        if (pFramesOut != NULL) {
            pRunningFramesOut = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
        }

        /* Run input data through the resampler and output it to the temporary buffer. */
        frameCountInThisIteration = (frameCountIn - framesProcessedIn);

        if (pConverter->hasPreFormatConversion) {
            if (frameCountInThisIteration > tempBufferInCap) {
                frameCountInThisIteration = tempBufferInCap;
            }
        }

        frameCountOutThisIteration = (frameCountOut - framesProcessedOut);
        if (frameCountOutThisIteration > tempBufferMidCap) {
            frameCountOutThisIteration = tempBufferMidCap;
        }

        /* We can't read more frames than can fit in the output buffer. */
        if (pConverter->hasPostFormatConversion) {
            if (frameCountOutThisIteration > tempBufferOutCap) {
                frameCountOutThisIteration = tempBufferOutCap;
            }
        }

        /* We need to ensure we don't try to process too many input frames that we run out of room in the output buffer. If this happens we'll end up glitching. */

        /*
        We need to try to predict how many input frames will be required for the resampler. If the
        resampler can tell us, we'll use that. Otherwise we'll need to make a best guess. The further
        off we are from this, the more wasted format conversions we'll end up doing.
        */
        #if 1
        {
            ma_uint64 requiredInputFrameCount;

            result = ma_resampler_get_required_input_frame_count(&pConverter->resampler, frameCountOutThisIteration, &requiredInputFrameCount);
            if (result != MA_SUCCESS) {
                /* Fall back to a best guess. */
                requiredInputFrameCount = (frameCountOutThisIteration * pConverter->resampler.sampleRateIn) / pConverter->resampler.sampleRateOut;
            }

            if (frameCountInThisIteration > requiredInputFrameCount) {
                frameCountInThisIteration = requiredInputFrameCount;
            }
        }
        #endif

        if (pConverter->hasPreFormatConversion) {
            if (pFramesIn != NULL) {
                ma_convert_pcm_frames_format(pTempBufferIn, pConverter->resampler.format, pRunningFramesIn, pConverter->formatIn, frameCountInThisIteration, pConverter->channelsIn, pConverter->ditherMode);
                pResampleBufferIn = pTempBufferIn;
            } else {
                pResampleBufferIn = NULL;
            }
        } else {
            pResampleBufferIn = pRunningFramesIn;
        }

        result = ma_resampler_process_pcm_frames(&pConverter->resampler, pResampleBufferIn, &frameCountInThisIteration, pTempBufferMid, &frameCountOutThisIteration);
        if (result != MA_SUCCESS) {
            return result;
        }


        /*
        The input data has been resampled so now we need to run it through the channel converter. The input data is always contained in pTempBufferMid. We only need to do
        this part if we have an output buffer.
        */
        if (pFramesOut != NULL) {
            if (pConverter->hasPostFormatConversion) {
                pChannelsBufferOut = pTempBufferOut;
            } else {
                pChannelsBufferOut = pRunningFramesOut;
            }

            result = ma_channel_converter_process_pcm_frames(&pConverter->channelConverter, pChannelsBufferOut, pTempBufferMid, frameCountOutThisIteration);
            if (result != MA_SUCCESS) {
                return result;
            }

            /* Finally we do post format conversion. */
            if (pConverter->hasPostFormatConversion) {
                ma_convert_pcm_frames_format(pRunningFramesOut, pConverter->formatOut, pChannelsBufferOut, pConverter->channelConverter.format, frameCountOutThisIteration, pConverter->channelConverter.channelsOut, pConverter->ditherMode);
            }
        }


        framesProcessedIn  += frameCountInThisIteration;
        framesProcessedOut += frameCountOutThisIteration;

        MA_ASSERT(framesProcessedIn  <= frameCountIn);
        MA_ASSERT(framesProcessedOut <= frameCountOut);

        if (frameCountOutThisIteration == 0) {
            break;  /* Consumed all of our input data. */
        }
    }

    if (pFrameCountIn != NULL) {
        *pFrameCountIn = framesProcessedIn;
    }
    if (pFrameCountOut != NULL) {
        *pFrameCountOut = framesProcessedOut;
    }

    return MA_SUCCESS;
}

static ma_result ma_data_converter_process_pcm_frames__channels_first(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    ma_result result;
    ma_uint64 frameCountIn;
    ma_uint64 frameCountOut;
    ma_uint64 framesProcessedIn;
    ma_uint64 framesProcessedOut;
    ma_uint8  pTempBufferIn[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];   /* In resampler format. */
    ma_uint64 tempBufferInCap;
    ma_uint8  pTempBufferMid[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];  /* In resampler format, channel converter input format. */
    ma_uint64 tempBufferMidCap;
    ma_uint8  pTempBufferOut[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];  /* In channel converter output format. */
    ma_uint64 tempBufferOutCap;

    MA_ASSERT(pConverter != NULL);
    MA_ASSERT(pConverter->resampler.format   == pConverter->channelConverter.format);
    MA_ASSERT(pConverter->resampler.channels == pConverter->channelConverter.channelsOut);
    MA_ASSERT(pConverter->resampler.channels <= pConverter->channelConverter.channelsIn);

    frameCountIn = 0;
    if (pFrameCountIn != NULL) {
        frameCountIn = *pFrameCountIn;
    }

    frameCountOut = 0;
    if (pFrameCountOut != NULL) {
        frameCountOut = *pFrameCountOut;
    }

    framesProcessedIn  = 0;
    framesProcessedOut = 0;

    tempBufferInCap  = sizeof(pTempBufferIn)  / ma_get_bytes_per_frame(pConverter->channelConverter.format, pConverter->channelConverter.channelsIn);
    tempBufferMidCap = sizeof(pTempBufferIn)  / ma_get_bytes_per_frame(pConverter->channelConverter.format, pConverter->channelConverter.channelsOut);
    tempBufferOutCap = sizeof(pTempBufferOut) / ma_get_bytes_per_frame(pConverter->resampler.format, pConverter->resampler.channels);

    while (framesProcessedOut < frameCountOut) {
        ma_uint64 frameCountInThisIteration;
        ma_uint64 frameCountOutThisIteration;
        const void* pRunningFramesIn = NULL;
        void* pRunningFramesOut = NULL;
        const void* pChannelsBufferIn;
        void* pResampleBufferOut;

        if (pFramesIn != NULL) {
            pRunningFramesIn  = ma_offset_ptr(pFramesIn,  framesProcessedIn  * ma_get_bytes_per_frame(pConverter->formatIn, pConverter->channelsIn));
        }
        if (pFramesOut != NULL) {
            pRunningFramesOut = ma_offset_ptr(pFramesOut, framesProcessedOut * ma_get_bytes_per_frame(pConverter->formatOut, pConverter->channelsOut));
        }

        /*
        Before doing any processing we need to determine how many frames we should try processing
        this iteration, for both input and output. The resampler requires us to perform format and
        channel conversion before passing any data into it. If we get our input count wrong, we'll
        end up performing redundant pre-processing. This isn't the end of the world, but it does
        result in some inefficiencies proportionate to how far our estimates are off.

        If the resampler has a means to calculate exactly how much we'll need, we'll use that.
        Otherwise we'll make a best guess. In order to do this, we'll need to calculate the output
        frame count first.
        */
        frameCountOutThisIteration = (frameCountOut - framesProcessedOut);
        if (frameCountOutThisIteration > tempBufferMidCap) {
            frameCountOutThisIteration = tempBufferMidCap;
        }

        if (pConverter->hasPostFormatConversion) {
            if (frameCountOutThisIteration > tempBufferOutCap) {
                frameCountOutThisIteration = tempBufferOutCap;
            }
        }

        /* Now that we have the output frame count we can determine the input frame count. */
        frameCountInThisIteration = (frameCountIn - framesProcessedIn);
        if (pConverter->hasPreFormatConversion) {
            if (frameCountInThisIteration > tempBufferInCap) {
                frameCountInThisIteration = tempBufferInCap;
            }
        }

        if (frameCountInThisIteration > tempBufferMidCap) {
            frameCountInThisIteration = tempBufferMidCap;
        }

        #if 1
        {
            ma_uint64 requiredInputFrameCount;

            result = ma_resampler_get_required_input_frame_count(&pConverter->resampler, frameCountOutThisIteration, &requiredInputFrameCount);
            if (result != MA_SUCCESS) {
                /* Fall back to a best guess. */
                requiredInputFrameCount = (frameCountOutThisIteration * pConverter->resampler.sampleRateIn) / pConverter->resampler.sampleRateOut;
            }

            if (frameCountInThisIteration > requiredInputFrameCount) {
                frameCountInThisIteration = requiredInputFrameCount;
            }
        }
        #endif


        /* Pre format conversion. */
        if (pConverter->hasPreFormatConversion) {
            if (pRunningFramesIn != NULL) {
                ma_convert_pcm_frames_format(pTempBufferIn, pConverter->channelConverter.format, pRunningFramesIn, pConverter->formatIn, frameCountInThisIteration, pConverter->channelsIn, pConverter->ditherMode);
                pChannelsBufferIn = pTempBufferIn;
            } else {
                pChannelsBufferIn = NULL;
            }
        } else {
            pChannelsBufferIn = pRunningFramesIn;
        }


        /* Channel conversion. */
        result = ma_channel_converter_process_pcm_frames(&pConverter->channelConverter, pTempBufferMid, pChannelsBufferIn, frameCountInThisIteration);
        if (result != MA_SUCCESS) {
            return result;
        }


        /* Resampling. */
        if (pConverter->hasPostFormatConversion) {
            pResampleBufferOut = pTempBufferOut;
        } else {
            pResampleBufferOut = pRunningFramesOut;
        }

        result = ma_resampler_process_pcm_frames(&pConverter->resampler, pTempBufferMid, &frameCountInThisIteration, pResampleBufferOut, &frameCountOutThisIteration);
        if (result != MA_SUCCESS) {
            return result;
        }


        /* Post format conversion. */
        if (pConverter->hasPostFormatConversion) {
            if (pRunningFramesOut != NULL) {
                ma_convert_pcm_frames_format(pRunningFramesOut, pConverter->formatOut, pResampleBufferOut, pConverter->resampler.format, frameCountOutThisIteration, pConverter->channelsOut, pConverter->ditherMode);
            }
        }


        framesProcessedIn  += frameCountInThisIteration;
        framesProcessedOut += frameCountOutThisIteration;

        MA_ASSERT(framesProcessedIn  <= frameCountIn);
        MA_ASSERT(framesProcessedOut <= frameCountOut);

        if (frameCountOutThisIteration == 0) {
            break;  /* Consumed all of our input data. */
        }
    }

    if (pFrameCountIn != NULL) {
        *pFrameCountIn = framesProcessedIn;
    }
    if (pFrameCountOut != NULL) {
        *pFrameCountOut = framesProcessedOut;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_data_converter_process_pcm_frames(ma_data_converter* pConverter, const void* pFramesIn, ma_uint64* pFrameCountIn, void* pFramesOut, ma_uint64* pFrameCountOut)
{
    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    switch (pConverter->executionPath)
    {
        case ma_data_converter_execution_path_passthrough:    return ma_data_converter_process_pcm_frames__passthrough(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
        case ma_data_converter_execution_path_format_only:    return ma_data_converter_process_pcm_frames__format_only(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
        case ma_data_converter_execution_path_channels_only:  return ma_data_converter_process_pcm_frames__channels_only(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
        case ma_data_converter_execution_path_resample_only:  return ma_data_converter_process_pcm_frames__resample_only(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
        case ma_data_converter_execution_path_resample_first: return ma_data_converter_process_pcm_frames__resample_first(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
        case ma_data_converter_execution_path_channels_first: return ma_data_converter_process_pcm_frames__channels_first(pConverter, pFramesIn, pFrameCountIn, pFramesOut, pFrameCountOut);
        default: return MA_INVALID_OPERATION;   /* Should never hit this. */
    }
}

MA_API ma_result ma_data_converter_set_rate(ma_data_converter* pConverter, ma_uint32 sampleRateIn, ma_uint32 sampleRateOut)
{
    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConverter->hasResampler == MA_FALSE) {
        return MA_INVALID_OPERATION;    /* Dynamic resampling not enabled. */
    }

    return ma_resampler_set_rate(&pConverter->resampler, sampleRateIn, sampleRateOut);
}

MA_API ma_result ma_data_converter_set_rate_ratio(ma_data_converter* pConverter, float ratioInOut)
{
    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConverter->hasResampler == MA_FALSE) {
        return MA_INVALID_OPERATION;    /* Dynamic resampling not enabled. */
    }

    return ma_resampler_set_rate_ratio(&pConverter->resampler, ratioInOut);
}

MA_API ma_uint64 ma_data_converter_get_input_latency(const ma_data_converter* pConverter)
{
    if (pConverter == NULL) {
        return 0;
    }

    if (pConverter->hasResampler) {
        return ma_resampler_get_input_latency(&pConverter->resampler);
    }

    return 0;   /* No latency without a resampler. */
}

MA_API ma_uint64 ma_data_converter_get_output_latency(const ma_data_converter* pConverter)
{
    if (pConverter == NULL) {
        return 0;
    }

    if (pConverter->hasResampler) {
        return ma_resampler_get_output_latency(&pConverter->resampler);
    }

    return 0;   /* No latency without a resampler. */
}

MA_API ma_result ma_data_converter_get_required_input_frame_count(const ma_data_converter* pConverter, ma_uint64 outputFrameCount, ma_uint64* pInputFrameCount)
{
    if (pInputFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    *pInputFrameCount = 0;

    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConverter->hasResampler) {
        return ma_resampler_get_required_input_frame_count(&pConverter->resampler, outputFrameCount, pInputFrameCount);
    } else {
        *pInputFrameCount = outputFrameCount;   /* 1:1 */
        return MA_SUCCESS;
    }
}

MA_API ma_result ma_data_converter_get_expected_output_frame_count(const ma_data_converter* pConverter, ma_uint64 inputFrameCount, ma_uint64* pOutputFrameCount)
{
    if (pOutputFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    *pOutputFrameCount = 0;

    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConverter->hasResampler) {
        return ma_resampler_get_expected_output_frame_count(&pConverter->resampler, inputFrameCount, pOutputFrameCount);
    } else {
        *pOutputFrameCount = inputFrameCount;   /* 1:1 */
        return MA_SUCCESS;
    }
}

MA_API ma_result ma_data_converter_get_input_channel_map(const ma_data_converter* pConverter, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pConverter == NULL || pChannelMap == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConverter->hasChannelConverter) {
        ma_channel_converter_get_output_channel_map(&pConverter->channelConverter, pChannelMap, channelMapCap);
    } else {
        ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pConverter->channelsOut);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_data_converter_get_output_channel_map(const ma_data_converter* pConverter, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pConverter == NULL || pChannelMap == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConverter->hasChannelConverter) {
        ma_channel_converter_get_input_channel_map(&pConverter->channelConverter, pChannelMap, channelMapCap);
    } else {
        ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pConverter->channelsIn);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_data_converter_reset(ma_data_converter* pConverter)
{
    if (pConverter == NULL) {
        return MA_INVALID_ARGS;
    }

    /* There's nothing to do if we're not resampling. */
    if (pConverter->hasResampler == MA_FALSE) {
        return MA_SUCCESS;
    }

    return ma_resampler_reset(&pConverter->resampler);
}



/**************************************************************************************************************************************************************

Channel Maps

**************************************************************************************************************************************************************/
static ma_channel ma_channel_map_init_standard_channel(ma_standard_channel_map standardChannelMap, ma_uint32 channelCount, ma_uint32 channelIndex);

MA_API ma_channel ma_channel_map_get_channel(const ma_channel* pChannelMap, ma_uint32 channelCount, ma_uint32 channelIndex)
{
    if (pChannelMap == NULL) {
        return ma_channel_map_init_standard_channel(ma_standard_channel_map_default, channelCount, channelIndex);
    } else {
        if (channelIndex >= channelCount) {
            return MA_CHANNEL_NONE;
        }

        return pChannelMap[channelIndex];
    }
}

MA_API void ma_channel_map_init_blank(ma_channel* pChannelMap, ma_uint32 channels)
{
    if (pChannelMap == NULL) {
        return;
    }

    MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channels);
}


static ma_channel ma_channel_map_init_standard_channel_microsoft(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    if (channelCount == 0 || channelIndex >= channelCount) {
        return MA_CHANNEL_NONE;
    }

    /* This is the Microsoft channel map. Based off the speaker configurations mentioned here: https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/content/ksmedia/ns-ksmedia-ksaudio_channel_config */
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3: /* No defined, but best guess. */
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
            #ifndef MA_USE_QUAD_MICROSOFT_CHANNEL_MAP
                /* Surround. Using the Surround profile has the advantage of the 3rd channel (MA_CHANNEL_FRONT_CENTER) mapping nicely with higher channel counts. */
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_BACK_CENTER;
            #else
                /* Quad. */
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
            #endif
            }
        } break;

        case 5: /* Not defined, but best guess. */
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 6:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_LFE;
                case 4: return MA_CHANNEL_SIDE_LEFT;
                case 5: return MA_CHANNEL_SIDE_RIGHT;
            }
        } break;

        case 7: /* Not defined, but best guess. */
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_LFE;
                case 4: return MA_CHANNEL_BACK_CENTER;
                case 5: return MA_CHANNEL_SIDE_LEFT;
                case 6: return MA_CHANNEL_SIDE_RIGHT;
            }
        } break;

        case 8:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_LFE;
                case 4: return MA_CHANNEL_BACK_LEFT;
                case 5: return MA_CHANNEL_BACK_RIGHT;
                case 6: return MA_CHANNEL_SIDE_LEFT;
                case 7: return MA_CHANNEL_SIDE_RIGHT;
            }
        } break;
    }

    if (channelCount > 8) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 8));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}

static ma_channel ma_channel_map_init_standard_channel_alsa(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 5:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
                case 4: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 6:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
                case 4: return MA_CHANNEL_FRONT_CENTER;
                case 5: return MA_CHANNEL_LFE;
            }
        } break;

        case 7:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
                case 4: return MA_CHANNEL_FRONT_CENTER;
                case 5: return MA_CHANNEL_LFE;
                case 6: return MA_CHANNEL_BACK_CENTER;
            }
        } break;

        case 8:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
                case 4: return MA_CHANNEL_FRONT_CENTER;
                case 5: return MA_CHANNEL_LFE;
                case 6: return MA_CHANNEL_SIDE_LEFT;
                case 7: return MA_CHANNEL_SIDE_RIGHT;
            }
        } break;
    }

    if (channelCount > 8) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 8));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}

static ma_channel ma_channel_map_init_standard_channel_rfc3551(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_BACK_CENTER;
            }
        } break;

        case 5:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 6:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_SIDE_LEFT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_FRONT_RIGHT;
                case 4: return MA_CHANNEL_SIDE_RIGHT;
                case 5: return MA_CHANNEL_BACK_CENTER;
            }
        } break;
    }

    if (channelCount > 6) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 6));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}

static ma_channel ma_channel_map_init_standard_channel_flac(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 5:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 6:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_LFE;
                case 4: return MA_CHANNEL_BACK_LEFT;
                case 5: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 7:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_LFE;
                case 4: return MA_CHANNEL_BACK_CENTER;
                case 5: return MA_CHANNEL_SIDE_LEFT;
                case 6: return MA_CHANNEL_SIDE_RIGHT;
            }
        } break;

        case 8:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_LFE;
                case 4: return MA_CHANNEL_BACK_LEFT;
                case 5: return MA_CHANNEL_BACK_RIGHT;
                case 6: return MA_CHANNEL_SIDE_LEFT;
                case 7: return MA_CHANNEL_SIDE_RIGHT;
            }
        } break;
    }

    if (channelCount > 8) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 8));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}

static ma_channel ma_channel_map_init_standard_channel_vorbis(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 5:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 6:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
                case 5: return MA_CHANNEL_LFE;
            }
        } break;

        case 7:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_SIDE_LEFT;
                case 4: return MA_CHANNEL_SIDE_RIGHT;
                case 5: return MA_CHANNEL_BACK_CENTER;
                case 6: return MA_CHANNEL_LFE;
            }
        } break;

        case 8:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_SIDE_LEFT;
                case 4: return MA_CHANNEL_SIDE_RIGHT;
                case 5: return MA_CHANNEL_BACK_LEFT;
                case 6: return MA_CHANNEL_BACK_RIGHT;
                case 7: return MA_CHANNEL_LFE;
            }
        } break;
    }

    if (channelCount > 8) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 8));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}

static ma_channel ma_channel_map_init_standard_channel_sound4(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 5:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 6:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_BACK_LEFT;
                case 4: return MA_CHANNEL_BACK_RIGHT;
                case 5: return MA_CHANNEL_LFE;
            }
        } break;

        case 7:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_SIDE_LEFT;
                case 4: return MA_CHANNEL_SIDE_RIGHT;
                case 5: return MA_CHANNEL_BACK_CENTER;
                case 6: return MA_CHANNEL_LFE;
            }
        } break;

        case 8:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_CENTER;
                case 2: return MA_CHANNEL_FRONT_RIGHT;
                case 3: return MA_CHANNEL_SIDE_LEFT;
                case 4: return MA_CHANNEL_SIDE_RIGHT;
                case 5: return MA_CHANNEL_BACK_LEFT;
                case 6: return MA_CHANNEL_BACK_RIGHT;
                case 7: return MA_CHANNEL_LFE;
            }
        } break;
    }

    if (channelCount > 8) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 8));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}

static ma_channel ma_channel_map_init_standard_channel_sndio(ma_uint32 channelCount, ma_uint32 channelIndex)
{
    switch (channelCount)
    {
        case 0: return MA_CHANNEL_NONE;

        case 1:
        {
            return MA_CHANNEL_MONO;
        } break;

        case 2:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
            }
        } break;

        case 3: /* No defined, but best guess. */
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 4:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
            }
        } break;

        case 5: /* Not defined, but best guess. */
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
                case 4: return MA_CHANNEL_FRONT_CENTER;
            }
        } break;

        case 6:
        default:
        {
            switch (channelIndex) {
                case 0: return MA_CHANNEL_FRONT_LEFT;
                case 1: return MA_CHANNEL_FRONT_RIGHT;
                case 2: return MA_CHANNEL_BACK_LEFT;
                case 3: return MA_CHANNEL_BACK_RIGHT;
                case 4: return MA_CHANNEL_FRONT_CENTER;
                case 5: return MA_CHANNEL_LFE;
            }
        } break;
    }

    if (channelCount > 6) {
        if (channelIndex < 32) {    /* We have 32 AUX channels. */
            return (ma_channel)(MA_CHANNEL_AUX_0 + (channelIndex - 6));
        }
    }

    /* Getting here means we don't know how to map the channel position so just return MA_CHANNEL_NONE. */
    return MA_CHANNEL_NONE;
}


static ma_channel ma_channel_map_init_standard_channel(ma_standard_channel_map standardChannelMap, ma_uint32 channelCount, ma_uint32 channelIndex)
{
    if (channelCount == 0 || channelIndex >= channelCount) {
        return MA_CHANNEL_NONE;
    }

    switch (standardChannelMap)
    {
        case ma_standard_channel_map_alsa:
        {
            return ma_channel_map_init_standard_channel_alsa(channelCount, channelIndex);
        } break;

        case ma_standard_channel_map_rfc3551:
        {
            return ma_channel_map_init_standard_channel_rfc3551(channelCount, channelIndex);
        } break;

        case ma_standard_channel_map_flac:
        {
            return ma_channel_map_init_standard_channel_flac(channelCount, channelIndex);
        } break;

        case ma_standard_channel_map_vorbis:
        {
            return ma_channel_map_init_standard_channel_vorbis(channelCount, channelIndex);
        } break;

        case ma_standard_channel_map_sound4:
        {
            return ma_channel_map_init_standard_channel_sound4(channelCount, channelIndex);
        } break;

        case ma_standard_channel_map_sndio:
        {
            return ma_channel_map_init_standard_channel_sndio(channelCount, channelIndex);
        } break;

        case ma_standard_channel_map_microsoft: /* Also default. */
        /*case ma_standard_channel_map_default;*/
        default:
        {
            return ma_channel_map_init_standard_channel_microsoft(channelCount, channelIndex);
        } break;
    }
}

MA_API void ma_channel_map_init_standard(ma_standard_channel_map standardChannelMap, ma_channel* pChannelMap, size_t channelMapCap, ma_uint32 channels)
{
    ma_uint32 iChannel;

    if (pChannelMap == NULL || channelMapCap == 0 || channels == 0) {
        return;
    }

    for (iChannel = 0; iChannel < channels; iChannel += 1) {
        if (channelMapCap == 0) {
            break;  /* Ran out of room. */
        }

        pChannelMap[0] = ma_channel_map_init_standard_channel(standardChannelMap, channels, iChannel);
        pChannelMap   += 1;
        channelMapCap -= 1;
    }
}

MA_API void ma_channel_map_copy(ma_channel* pOut, const ma_channel* pIn, ma_uint32 channels)
{
    if (pOut != NULL && pIn != NULL && channels > 0) {
        MA_COPY_MEMORY(pOut, pIn, sizeof(*pOut) * channels);
    }
}

MA_API void ma_channel_map_copy_or_default(ma_channel* pOut, size_t channelMapCapOut, const ma_channel* pIn, ma_uint32 channels)
{
    if (pOut == NULL || channels == 0) {
        return;
    }

    if (pIn != NULL) {
        ma_channel_map_copy(pOut, pIn, channels);
    } else {
        ma_channel_map_init_standard(ma_standard_channel_map_default, pOut, channelMapCapOut, channels);
    }
}

MA_API ma_bool32 ma_channel_map_is_valid(const ma_channel* pChannelMap, ma_uint32 channels)
{
    /* A channel count of 0 is invalid. */
    if (channels == 0) {
        return MA_FALSE;
    }

    /* It does not make sense to have a mono channel when there is more than 1 channel. */
    if (channels > 1) {
        ma_uint32 iChannel;
        for (iChannel = 0; iChannel < channels; ++iChannel) {
            if (ma_channel_map_get_channel(pChannelMap, channels, iChannel) == MA_CHANNEL_MONO) {
                return MA_FALSE;
            }
        }
    }

    return MA_TRUE;
}

MA_API ma_bool32 ma_channel_map_is_equal(const ma_channel* pChannelMapA, const ma_channel* pChannelMapB, ma_uint32 channels)
{
    ma_uint32 iChannel;

    if (pChannelMapA == pChannelMapB) {
        return MA_TRUE;
    }

    for (iChannel = 0; iChannel < channels; ++iChannel) {
        if (ma_channel_map_get_channel(pChannelMapA, channels, iChannel) != ma_channel_map_get_channel(pChannelMapB, channels, iChannel)) {
            return MA_FALSE;
        }
    }

    return MA_TRUE;
}

MA_API ma_bool32 ma_channel_map_is_blank(const ma_channel* pChannelMap, ma_uint32 channels)
{
    ma_uint32 iChannel;

    /* A null channel map is equivalent to the default channel map. */
    if (pChannelMap == NULL) {
        return MA_FALSE;
    }

    for (iChannel = 0; iChannel < channels; ++iChannel) {
        if (pChannelMap[iChannel] != MA_CHANNEL_NONE) {
            return MA_FALSE;
        }
    }

    return MA_TRUE;
}

MA_API ma_bool32 ma_channel_map_contains_channel_position(ma_uint32 channels, const ma_channel* pChannelMap, ma_channel channelPosition)
{
    return ma_channel_map_find_channel_position(channels, pChannelMap, channelPosition, NULL);
}

MA_API ma_bool32 ma_channel_map_find_channel_position(ma_uint32 channels, const ma_channel* pChannelMap, ma_channel channelPosition, ma_uint32* pChannelIndex)
{
    ma_uint32 iChannel;

    if (pChannelIndex != NULL) {
        *pChannelIndex = (ma_uint32)-1;
    }

    for (iChannel = 0; iChannel < channels; ++iChannel) {
        if (ma_channel_map_get_channel(pChannelMap, channels, iChannel) == channelPosition) {
            if (pChannelIndex != NULL) {
                *pChannelIndex = iChannel;
            }

            return MA_TRUE;
        }
    }

    /* Getting here means the channel position was not found. */
    return MA_FALSE;
}

MA_API size_t ma_channel_map_to_string(const ma_channel* pChannelMap, ma_uint32 channels, char* pBufferOut, size_t bufferCap)
{
    size_t len;
    ma_uint32 iChannel;

    len = 0;

    for (iChannel = 0; iChannel < channels; iChannel += 1) {
        const char* pChannelStr = ma_channel_position_to_string(ma_channel_map_get_channel(pChannelMap, channels, iChannel));
        size_t channelStrLen = strlen(pChannelStr);

        /* Append the string if necessary. */
        if (pBufferOut != NULL && bufferCap > len + channelStrLen) {
            MA_COPY_MEMORY(pBufferOut + len, pChannelStr, channelStrLen);
        }
        len += channelStrLen;

        /* Append a space if it's not the last item. */
        if (iChannel+1 < channels) {
            if (pBufferOut != NULL && bufferCap > len + 1) {
                pBufferOut[len] = ' ';
            }
            len += 1;
        }
    }

    /* Null terminate. Don't increment the length here. */
    if (pBufferOut != NULL && bufferCap > len + 1) {
        pBufferOut[len] = '\0';
    }

    return len;
}

MA_API const char* ma_channel_position_to_string(ma_channel channel)
{
    switch (channel)
    {
        case MA_CHANNEL_NONE              : return "CHANNEL_NONE";
        case MA_CHANNEL_MONO              : return "CHANNEL_MONO";
        case MA_CHANNEL_FRONT_LEFT        : return "CHANNEL_FRONT_LEFT";
        case MA_CHANNEL_FRONT_RIGHT       : return "CHANNEL_FRONT_RIGHT";
        case MA_CHANNEL_FRONT_CENTER      : return "CHANNEL_FRONT_CENTER";
        case MA_CHANNEL_LFE               : return "CHANNEL_LFE";
        case MA_CHANNEL_BACK_LEFT         : return "CHANNEL_BACK_LEFT";
        case MA_CHANNEL_BACK_RIGHT        : return "CHANNEL_BACK_RIGHT";
        case MA_CHANNEL_FRONT_LEFT_CENTER : return "CHANNEL_FRONT_LEFT_CENTER";
        case MA_CHANNEL_FRONT_RIGHT_CENTER: return "CHANNEL_FRONT_RIGHT_CENTER";
        case MA_CHANNEL_BACK_CENTER       : return "CHANNEL_BACK_CENTER";
        case MA_CHANNEL_SIDE_LEFT         : return "CHANNEL_SIDE_LEFT";
        case MA_CHANNEL_SIDE_RIGHT        : return "CHANNEL_SIDE_RIGHT";
        case MA_CHANNEL_TOP_CENTER        : return "CHANNEL_TOP_CENTER";
        case MA_CHANNEL_TOP_FRONT_LEFT    : return "CHANNEL_TOP_FRONT_LEFT";
        case MA_CHANNEL_TOP_FRONT_CENTER  : return "CHANNEL_TOP_FRONT_CENTER";
        case MA_CHANNEL_TOP_FRONT_RIGHT   : return "CHANNEL_TOP_FRONT_RIGHT";
        case MA_CHANNEL_TOP_BACK_LEFT     : return "CHANNEL_TOP_BACK_LEFT";
        case MA_CHANNEL_TOP_BACK_CENTER   : return "CHANNEL_TOP_BACK_CENTER";
        case MA_CHANNEL_TOP_BACK_RIGHT    : return "CHANNEL_TOP_BACK_RIGHT";
        case MA_CHANNEL_AUX_0             : return "CHANNEL_AUX_0";
        case MA_CHANNEL_AUX_1             : return "CHANNEL_AUX_1";
        case MA_CHANNEL_AUX_2             : return "CHANNEL_AUX_2";
        case MA_CHANNEL_AUX_3             : return "CHANNEL_AUX_3";
        case MA_CHANNEL_AUX_4             : return "CHANNEL_AUX_4";
        case MA_CHANNEL_AUX_5             : return "CHANNEL_AUX_5";
        case MA_CHANNEL_AUX_6             : return "CHANNEL_AUX_6";
        case MA_CHANNEL_AUX_7             : return "CHANNEL_AUX_7";
        case MA_CHANNEL_AUX_8             : return "CHANNEL_AUX_8";
        case MA_CHANNEL_AUX_9             : return "CHANNEL_AUX_9";
        case MA_CHANNEL_AUX_10            : return "CHANNEL_AUX_10";
        case MA_CHANNEL_AUX_11            : return "CHANNEL_AUX_11";
        case MA_CHANNEL_AUX_12            : return "CHANNEL_AUX_12";
        case MA_CHANNEL_AUX_13            : return "CHANNEL_AUX_13";
        case MA_CHANNEL_AUX_14            : return "CHANNEL_AUX_14";
        case MA_CHANNEL_AUX_15            : return "CHANNEL_AUX_15";
        case MA_CHANNEL_AUX_16            : return "CHANNEL_AUX_16";
        case MA_CHANNEL_AUX_17            : return "CHANNEL_AUX_17";
        case MA_CHANNEL_AUX_18            : return "CHANNEL_AUX_18";
        case MA_CHANNEL_AUX_19            : return "CHANNEL_AUX_19";
        case MA_CHANNEL_AUX_20            : return "CHANNEL_AUX_20";
        case MA_CHANNEL_AUX_21            : return "CHANNEL_AUX_21";
        case MA_CHANNEL_AUX_22            : return "CHANNEL_AUX_22";
        case MA_CHANNEL_AUX_23            : return "CHANNEL_AUX_23";
        case MA_CHANNEL_AUX_24            : return "CHANNEL_AUX_24";
        case MA_CHANNEL_AUX_25            : return "CHANNEL_AUX_25";
        case MA_CHANNEL_AUX_26            : return "CHANNEL_AUX_26";
        case MA_CHANNEL_AUX_27            : return "CHANNEL_AUX_27";
        case MA_CHANNEL_AUX_28            : return "CHANNEL_AUX_28";
        case MA_CHANNEL_AUX_29            : return "CHANNEL_AUX_29";
        case MA_CHANNEL_AUX_30            : return "CHANNEL_AUX_30";
        case MA_CHANNEL_AUX_31            : return "CHANNEL_AUX_31";
        default: break;
    }

    return "UNKNOWN";
}



/**************************************************************************************************************************************************************

Conversion Helpers

**************************************************************************************************************************************************************/
MA_API ma_uint64 ma_convert_frames(void* pOut, ma_uint64 frameCountOut, ma_format formatOut, ma_uint32 channelsOut, ma_uint32 sampleRateOut, const void* pIn, ma_uint64 frameCountIn, ma_format formatIn, ma_uint32 channelsIn, ma_uint32 sampleRateIn)
{
    ma_data_converter_config config;

    config = ma_data_converter_config_init(formatIn, formatOut, channelsIn, channelsOut, sampleRateIn, sampleRateOut);
    config.resampling.linear.lpfOrder = ma_min(MA_DEFAULT_RESAMPLER_LPF_ORDER, MA_MAX_FILTER_ORDER);

    return ma_convert_frames_ex(pOut, frameCountOut, pIn, frameCountIn, &config);
}

MA_API ma_uint64 ma_convert_frames_ex(void* pOut, ma_uint64 frameCountOut, const void* pIn, ma_uint64 frameCountIn, const ma_data_converter_config* pConfig)
{
    ma_result result;
    ma_data_converter converter;

    if (frameCountIn == 0 || pConfig == NULL) {
        return 0;
    }

    result = ma_data_converter_init(pConfig, NULL, &converter);
    if (result != MA_SUCCESS) {
        return 0;   /* Failed to initialize the data converter. */
    }

    if (pOut == NULL) {
        result = ma_data_converter_get_expected_output_frame_count(&converter, frameCountIn, &frameCountOut);
        if (result != MA_SUCCESS) {
            if (result == MA_NOT_IMPLEMENTED) {
                /* No way to calculate the number of frames, so we'll need to brute force it and loop. */
                frameCountOut = 0;

                while (frameCountIn > 0) {
                    ma_uint64 framesProcessedIn  = frameCountIn;
                    ma_uint64 framesProcessedOut = 0xFFFFFFFF;

                    result = ma_data_converter_process_pcm_frames(&converter, pIn, &framesProcessedIn, NULL, &framesProcessedOut);
                    if (result != MA_SUCCESS) {
                        break;
                    }

                    frameCountIn  -= framesProcessedIn;
                }
            }
        }
    } else {
        result = ma_data_converter_process_pcm_frames(&converter, pIn, &frameCountIn, pOut, &frameCountOut);
        if (result != MA_SUCCESS) {
            frameCountOut = 0;
        }
    }

    ma_data_converter_uninit(&converter, NULL);
    return frameCountOut;
}


/**************************************************************************************************************************************************************

Ring Buffer

**************************************************************************************************************************************************************/
static MA_INLINE ma_uint32 ma_rb__extract_offset_in_bytes(ma_uint32 encodedOffset)
{
    return encodedOffset & 0x7FFFFFFF;
}

static MA_INLINE ma_uint32 ma_rb__extract_offset_loop_flag(ma_uint32 encodedOffset)
{
    return encodedOffset & 0x80000000;
}

static MA_INLINE void* ma_rb__get_read_ptr(ma_rb* pRB)
{
    MA_ASSERT(pRB != NULL);
    return ma_offset_ptr(pRB->pBuffer, ma_rb__extract_offset_in_bytes(ma_atomic_load_32(&pRB->encodedReadOffset)));
}

static MA_INLINE void* ma_rb__get_write_ptr(ma_rb* pRB)
{
    MA_ASSERT(pRB != NULL);
    return ma_offset_ptr(pRB->pBuffer, ma_rb__extract_offset_in_bytes(ma_atomic_load_32(&pRB->encodedWriteOffset)));
}

static MA_INLINE ma_uint32 ma_rb__construct_offset(ma_uint32 offsetInBytes, ma_uint32 offsetLoopFlag)
{
    return offsetLoopFlag | offsetInBytes;
}

static MA_INLINE void ma_rb__deconstruct_offset(ma_uint32 encodedOffset, ma_uint32* pOffsetInBytes, ma_uint32* pOffsetLoopFlag)
{
    MA_ASSERT(pOffsetInBytes != NULL);
    MA_ASSERT(pOffsetLoopFlag != NULL);

    *pOffsetInBytes  = ma_rb__extract_offset_in_bytes(encodedOffset);
    *pOffsetLoopFlag = ma_rb__extract_offset_loop_flag(encodedOffset);
}


MA_API ma_result ma_rb_init_ex(size_t subbufferSizeInBytes, size_t subbufferCount, size_t subbufferStrideInBytes, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_rb* pRB)
{
    ma_result result;
    const ma_uint32 maxSubBufferSize = 0x7FFFFFFF - (MA_SIMD_ALIGNMENT-1);

    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    if (subbufferSizeInBytes == 0 || subbufferCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (subbufferSizeInBytes > maxSubBufferSize) {
        return MA_INVALID_ARGS;    /* Maximum buffer size is ~2GB. The most significant bit is a flag for use internally. */
    }


    MA_ZERO_OBJECT(pRB);

    result = ma_allocation_callbacks_init_copy(&pRB->allocationCallbacks, pAllocationCallbacks);
    if (result != MA_SUCCESS) {
        return result;
    }

    pRB->subbufferSizeInBytes = (ma_uint32)subbufferSizeInBytes;
    pRB->subbufferCount = (ma_uint32)subbufferCount;

    if (pOptionalPreallocatedBuffer != NULL) {
        pRB->subbufferStrideInBytes = (ma_uint32)subbufferStrideInBytes;
        pRB->pBuffer = pOptionalPreallocatedBuffer;
    } else {
        size_t bufferSizeInBytes;

        /*
        Here is where we allocate our own buffer. We always want to align this to MA_SIMD_ALIGNMENT for future SIMD optimization opportunity. To do this
        we need to make sure the stride is a multiple of MA_SIMD_ALIGNMENT.
        */
        pRB->subbufferStrideInBytes = (pRB->subbufferSizeInBytes + (MA_SIMD_ALIGNMENT-1)) & ~MA_SIMD_ALIGNMENT;

        bufferSizeInBytes = (size_t)pRB->subbufferCount*pRB->subbufferStrideInBytes;
        pRB->pBuffer = ma_aligned_malloc(bufferSizeInBytes, MA_SIMD_ALIGNMENT, &pRB->allocationCallbacks);
        if (pRB->pBuffer == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        MA_ZERO_MEMORY(pRB->pBuffer, bufferSizeInBytes);
        pRB->ownsBuffer = MA_TRUE;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_rb_init(size_t bufferSizeInBytes, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_rb* pRB)
{
    return ma_rb_init_ex(bufferSizeInBytes, 1, 0, pOptionalPreallocatedBuffer, pAllocationCallbacks, pRB);
}

MA_API void ma_rb_uninit(ma_rb* pRB)
{
    if (pRB == NULL) {
        return;
    }

    if (pRB->ownsBuffer) {
        ma_aligned_free(pRB->pBuffer, &pRB->allocationCallbacks);
    }
}

MA_API void ma_rb_reset(ma_rb* pRB)
{
    if (pRB == NULL) {
        return;
    }

    ma_atomic_exchange_32(&pRB->encodedReadOffset, 0);
    ma_atomic_exchange_32(&pRB->encodedWriteOffset, 0);
}

MA_API ma_result ma_rb_acquire_read(ma_rb* pRB, size_t* pSizeInBytes, void** ppBufferOut)
{
    ma_uint32 writeOffset;
    ma_uint32 writeOffsetInBytes;
    ma_uint32 writeOffsetLoopFlag;
    ma_uint32 readOffset;
    ma_uint32 readOffsetInBytes;
    ma_uint32 readOffsetLoopFlag;
    size_t bytesAvailable;
    size_t bytesRequested;

    if (pRB == NULL || pSizeInBytes == NULL || ppBufferOut == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The returned buffer should never move ahead of the write pointer. */
    writeOffset = ma_atomic_load_32(&pRB->encodedWriteOffset);
    ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);

    readOffset = ma_atomic_load_32(&pRB->encodedReadOffset);
    ma_rb__deconstruct_offset(readOffset, &readOffsetInBytes, &readOffsetLoopFlag);

    /*
    The number of bytes available depends on whether or not the read and write pointers are on the same loop iteration. If so, we
    can only read up to the write pointer. If not, we can only read up to the end of the buffer.
    */
    if (readOffsetLoopFlag == writeOffsetLoopFlag) {
        bytesAvailable = writeOffsetInBytes - readOffsetInBytes;
    } else {
        bytesAvailable = pRB->subbufferSizeInBytes - readOffsetInBytes;
    }

    bytesRequested = *pSizeInBytes;
    if (bytesRequested > bytesAvailable) {
        bytesRequested = bytesAvailable;
    }

    *pSizeInBytes = bytesRequested;
    (*ppBufferOut) = ma_rb__get_read_ptr(pRB);

    return MA_SUCCESS;
}

MA_API ma_result ma_rb_commit_read(ma_rb* pRB, size_t sizeInBytes)
{
    ma_uint32 readOffset;
    ma_uint32 readOffsetInBytes;
    ma_uint32 readOffsetLoopFlag;
    ma_uint32 newReadOffsetInBytes;
    ma_uint32 newReadOffsetLoopFlag;

    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    readOffset = ma_atomic_load_32(&pRB->encodedReadOffset);
    ma_rb__deconstruct_offset(readOffset, &readOffsetInBytes, &readOffsetLoopFlag);

    /* Check that sizeInBytes is correct. It should never go beyond the end of the buffer. */
    newReadOffsetInBytes = (ma_uint32)(readOffsetInBytes + sizeInBytes);
    if (newReadOffsetInBytes > pRB->subbufferSizeInBytes) {
        return MA_INVALID_ARGS;    /* <-- sizeInBytes will cause the read offset to overflow. */
    }

    /* Move the read pointer back to the start if necessary. */
    newReadOffsetLoopFlag = readOffsetLoopFlag;
    if (newReadOffsetInBytes == pRB->subbufferSizeInBytes) {
        newReadOffsetInBytes = 0;
        newReadOffsetLoopFlag ^= 0x80000000;
    }

    ma_atomic_exchange_32(&pRB->encodedReadOffset, ma_rb__construct_offset(newReadOffsetInBytes, newReadOffsetLoopFlag));

    return MA_SUCCESS;
}

MA_API ma_result ma_rb_acquire_write(ma_rb* pRB, size_t* pSizeInBytes, void** ppBufferOut)
{
    ma_uint32 readOffset;
    ma_uint32 readOffsetInBytes;
    ma_uint32 readOffsetLoopFlag;
    ma_uint32 writeOffset;
    ma_uint32 writeOffsetInBytes;
    ma_uint32 writeOffsetLoopFlag;
    size_t bytesAvailable;
    size_t bytesRequested;

    if (pRB == NULL || pSizeInBytes == NULL || ppBufferOut == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The returned buffer should never overtake the read buffer. */
    readOffset = ma_atomic_load_32(&pRB->encodedReadOffset);
    ma_rb__deconstruct_offset(readOffset, &readOffsetInBytes, &readOffsetLoopFlag);

    writeOffset = ma_atomic_load_32(&pRB->encodedWriteOffset);
    ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);

    /*
    In the case of writing, if the write pointer and the read pointer are on the same loop iteration we can only
    write up to the end of the buffer. Otherwise we can only write up to the read pointer. The write pointer should
    never overtake the read pointer.
    */
    if (writeOffsetLoopFlag == readOffsetLoopFlag) {
        bytesAvailable = pRB->subbufferSizeInBytes - writeOffsetInBytes;
    } else {
        bytesAvailable = readOffsetInBytes - writeOffsetInBytes;
    }

    bytesRequested = *pSizeInBytes;
    if (bytesRequested > bytesAvailable) {
        bytesRequested = bytesAvailable;
    }

    *pSizeInBytes = bytesRequested;
    *ppBufferOut  = ma_rb__get_write_ptr(pRB);

    /* Clear the buffer if desired. */
    if (pRB->clearOnWriteAcquire) {
        MA_ZERO_MEMORY(*ppBufferOut, *pSizeInBytes);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_rb_commit_write(ma_rb* pRB, size_t sizeInBytes)
{
    ma_uint32 writeOffset;
    ma_uint32 writeOffsetInBytes;
    ma_uint32 writeOffsetLoopFlag;
    ma_uint32 newWriteOffsetInBytes;
    ma_uint32 newWriteOffsetLoopFlag;

    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    writeOffset = ma_atomic_load_32(&pRB->encodedWriteOffset);
    ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);

    /* Check that sizeInBytes is correct. It should never go beyond the end of the buffer. */
    newWriteOffsetInBytes = (ma_uint32)(writeOffsetInBytes + sizeInBytes);
    if (newWriteOffsetInBytes > pRB->subbufferSizeInBytes) {
        return MA_INVALID_ARGS;    /* <-- sizeInBytes will cause the read offset to overflow. */
    }

    /* Move the read pointer back to the start if necessary. */
    newWriteOffsetLoopFlag = writeOffsetLoopFlag;
    if (newWriteOffsetInBytes == pRB->subbufferSizeInBytes) {
        newWriteOffsetInBytes = 0;
        newWriteOffsetLoopFlag ^= 0x80000000;
    }

    ma_atomic_exchange_32(&pRB->encodedWriteOffset, ma_rb__construct_offset(newWriteOffsetInBytes, newWriteOffsetLoopFlag));

    return MA_SUCCESS;
}

MA_API ma_result ma_rb_seek_read(ma_rb* pRB, size_t offsetInBytes)
{
    ma_uint32 readOffset;
    ma_uint32 readOffsetInBytes;
    ma_uint32 readOffsetLoopFlag;
    ma_uint32 writeOffset;
    ma_uint32 writeOffsetInBytes;
    ma_uint32 writeOffsetLoopFlag;
    ma_uint32 newReadOffsetInBytes;
    ma_uint32 newReadOffsetLoopFlag;

    if (pRB == NULL || offsetInBytes > pRB->subbufferSizeInBytes) {
        return MA_INVALID_ARGS;
    }

    readOffset = ma_atomic_load_32(&pRB->encodedReadOffset);
    ma_rb__deconstruct_offset(readOffset, &readOffsetInBytes, &readOffsetLoopFlag);

    writeOffset = ma_atomic_load_32(&pRB->encodedWriteOffset);
    ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);

    newReadOffsetLoopFlag = readOffsetLoopFlag;

    /* We cannot go past the write buffer. */
    if (readOffsetLoopFlag == writeOffsetLoopFlag) {
        if ((readOffsetInBytes + offsetInBytes) > writeOffsetInBytes) {
            newReadOffsetInBytes = writeOffsetInBytes;
        } else {
            newReadOffsetInBytes = (ma_uint32)(readOffsetInBytes + offsetInBytes);
        }
    } else {
        /* May end up looping. */
        if ((readOffsetInBytes + offsetInBytes) >= pRB->subbufferSizeInBytes) {
            newReadOffsetInBytes = (ma_uint32)(readOffsetInBytes + offsetInBytes) - pRB->subbufferSizeInBytes;
            newReadOffsetLoopFlag ^= 0x80000000;    /* <-- Looped. */
        } else {
            newReadOffsetInBytes = (ma_uint32)(readOffsetInBytes + offsetInBytes);
        }
    }

    ma_atomic_exchange_32(&pRB->encodedReadOffset, ma_rb__construct_offset(newReadOffsetInBytes, newReadOffsetLoopFlag));
    return MA_SUCCESS;
}

MA_API ma_result ma_rb_seek_write(ma_rb* pRB, size_t offsetInBytes)
{
    ma_uint32 readOffset;
    ma_uint32 readOffsetInBytes;
    ma_uint32 readOffsetLoopFlag;
    ma_uint32 writeOffset;
    ma_uint32 writeOffsetInBytes;
    ma_uint32 writeOffsetLoopFlag;
    ma_uint32 newWriteOffsetInBytes;
    ma_uint32 newWriteOffsetLoopFlag;

    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    readOffset = ma_atomic_load_32(&pRB->encodedReadOffset);
    ma_rb__deconstruct_offset(readOffset, &readOffsetInBytes, &readOffsetLoopFlag);

    writeOffset = ma_atomic_load_32(&pRB->encodedWriteOffset);
    ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);

    newWriteOffsetLoopFlag = writeOffsetLoopFlag;

    /* We cannot go past the write buffer. */
    if (readOffsetLoopFlag == writeOffsetLoopFlag) {
        /* May end up looping. */
        if ((writeOffsetInBytes + offsetInBytes) >= pRB->subbufferSizeInBytes) {
            newWriteOffsetInBytes = (ma_uint32)(writeOffsetInBytes + offsetInBytes) - pRB->subbufferSizeInBytes;
            newWriteOffsetLoopFlag ^= 0x80000000;    /* <-- Looped. */
        } else {
            newWriteOffsetInBytes = (ma_uint32)(writeOffsetInBytes + offsetInBytes);
        }
    } else {
        if ((writeOffsetInBytes + offsetInBytes) > readOffsetInBytes) {
            newWriteOffsetInBytes = readOffsetInBytes;
        } else {
            newWriteOffsetInBytes = (ma_uint32)(writeOffsetInBytes + offsetInBytes);
        }
    }

    ma_atomic_exchange_32(&pRB->encodedWriteOffset, ma_rb__construct_offset(newWriteOffsetInBytes, newWriteOffsetLoopFlag));
    return MA_SUCCESS;
}

MA_API ma_int32 ma_rb_pointer_distance(ma_rb* pRB)
{
    ma_uint32 readOffset;
    ma_uint32 readOffsetInBytes;
    ma_uint32 readOffsetLoopFlag;
    ma_uint32 writeOffset;
    ma_uint32 writeOffsetInBytes;
    ma_uint32 writeOffsetLoopFlag;

    if (pRB == NULL) {
        return 0;
    }

    readOffset = ma_atomic_load_32(&pRB->encodedReadOffset);
    ma_rb__deconstruct_offset(readOffset, &readOffsetInBytes, &readOffsetLoopFlag);

    writeOffset = ma_atomic_load_32(&pRB->encodedWriteOffset);
    ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);

    if (readOffsetLoopFlag == writeOffsetLoopFlag) {
        return writeOffsetInBytes - readOffsetInBytes;
    } else {
        return writeOffsetInBytes + (pRB->subbufferSizeInBytes - readOffsetInBytes);
    }
}

MA_API ma_uint32 ma_rb_available_read(ma_rb* pRB)
{
    ma_int32 dist;

    if (pRB == NULL) {
        return 0;
    }

    dist = ma_rb_pointer_distance(pRB);
    if (dist < 0) {
        return 0;
    }

    return dist;
}

MA_API ma_uint32 ma_rb_available_write(ma_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return (ma_uint32)(ma_rb_get_subbuffer_size(pRB) - ma_rb_pointer_distance(pRB));
}

MA_API size_t ma_rb_get_subbuffer_size(ma_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return pRB->subbufferSizeInBytes;
}

MA_API size_t ma_rb_get_subbuffer_stride(ma_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    if (pRB->subbufferStrideInBytes == 0) {
        return (size_t)pRB->subbufferSizeInBytes;
    }

    return (size_t)pRB->subbufferStrideInBytes;
}

MA_API size_t ma_rb_get_subbuffer_offset(ma_rb* pRB, size_t subbufferIndex)
{
    if (pRB == NULL) {
        return 0;
    }

    return subbufferIndex * ma_rb_get_subbuffer_stride(pRB);
}

MA_API void* ma_rb_get_subbuffer_ptr(ma_rb* pRB, size_t subbufferIndex, void* pBuffer)
{
    if (pRB == NULL) {
        return NULL;
    }

    return ma_offset_ptr(pBuffer, ma_rb_get_subbuffer_offset(pRB, subbufferIndex));
}



static ma_result ma_pcm_rb_data_source__on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    /* Since there's no notion of an end, we don't ever want to return MA_AT_END here. But it is possible to return 0. */
    ma_pcm_rb* pRB = (ma_pcm_rb*)pDataSource;
    ma_result result;
    ma_uint64 totalFramesRead;

    MA_ASSERT(pRB != NULL);

    /* We need to run this in a loop since the ring buffer itself may loop. */
    totalFramesRead = 0;
    while (totalFramesRead < frameCount) {
        void* pMappedBuffer;
        ma_uint32 mappedFrameCount;
        ma_uint64 framesToRead = frameCount - totalFramesRead;
        if (framesToRead > 0xFFFFFFFF) {
            framesToRead = 0xFFFFFFFF;
        }

        mappedFrameCount = (ma_uint32)framesToRead;
        result = ma_pcm_rb_acquire_read(pRB, &mappedFrameCount, &pMappedBuffer);
        if (result != MA_SUCCESS) {
            break;
        }

        if (mappedFrameCount == 0) {
            break;  /* <-- End of ring buffer. */
        }

        ma_copy_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, pRB->format, pRB->channels), pMappedBuffer, mappedFrameCount, pRB->format, pRB->channels);

        result = ma_pcm_rb_commit_read(pRB, mappedFrameCount);
        if (result != MA_SUCCESS) {
            break;
        }

        totalFramesRead += mappedFrameCount;
    }

    /*
    There is no notion of an "end" in a ring buffer. If we didn't have enough data to fill the requested frame
    count we'll need to pad with silence. If we don't do this, totalFramesRead might equal 0 which will result
    in the data source layer at a higher level translating this to MA_AT_END which is incorrect for a ring buffer.
    */
    if (totalFramesRead < frameCount) {
        ma_silence_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, pRB->format, pRB->channels), (frameCount - totalFramesRead), pRB->format, pRB->channels);
        totalFramesRead = frameCount;
    }

    *pFramesRead = totalFramesRead;
    return MA_SUCCESS;
}

static ma_result ma_pcm_rb_data_source__on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_pcm_rb* pRB = (ma_pcm_rb*)pDataSource;
    MA_ASSERT(pRB != NULL);

    if (pFormat != NULL) {
        *pFormat = pRB->format;
    }

    if (pChannels != NULL) {
        *pChannels = pRB->channels;
    }

    if (pSampleRate != NULL) {
        *pSampleRate = pRB->sampleRate;
    }

    /* Just assume the default channel map. */
    if (pChannelMap != NULL) {
        ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pRB->channels);
    }

    return MA_SUCCESS;
}

static ma_data_source_vtable ma_gRBDataSourceVTable =
{
    ma_pcm_rb_data_source__on_read,
    NULL,   /* onSeek */
    ma_pcm_rb_data_source__on_get_data_format,
    NULL,   /* onGetCursor */
    NULL,   /* onGetLength */
    NULL,   /* onSetLooping */
    0
};

static MA_INLINE ma_uint32 ma_pcm_rb_get_bpf(ma_pcm_rb* pRB)
{
    MA_ASSERT(pRB != NULL);

    return ma_get_bytes_per_frame(pRB->format, pRB->channels);
}

MA_API ma_result ma_pcm_rb_init_ex(ma_format format, ma_uint32 channels, ma_uint32 subbufferSizeInFrames, ma_uint32 subbufferCount, ma_uint32 subbufferStrideInFrames, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_pcm_rb* pRB)
{
    ma_uint32 bpf;
    ma_result result;

    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pRB);

    bpf = ma_get_bytes_per_frame(format, channels);
    if (bpf == 0) {
        return MA_INVALID_ARGS;
    }

    result = ma_rb_init_ex(subbufferSizeInFrames*bpf, subbufferCount, subbufferStrideInFrames*bpf, pOptionalPreallocatedBuffer, pAllocationCallbacks, &pRB->rb);
    if (result != MA_SUCCESS) {
        return result;
    }

    pRB->format     = format;
    pRB->channels   = channels;
    pRB->sampleRate = 0;    /* The sample rate is not passed in as a parameter. */

    /* The PCM ring buffer is a data source. We need to get that set up as well. */
    {
        ma_data_source_config dataSourceConfig = ma_data_source_config_init();
        dataSourceConfig.vtable = &ma_gRBDataSourceVTable;

        result = ma_data_source_init(&dataSourceConfig, &pRB->ds);
        if (result != MA_SUCCESS) {
            ma_rb_uninit(&pRB->rb);
            return result;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_pcm_rb_init(ma_format format, ma_uint32 channels, ma_uint32 bufferSizeInFrames, void* pOptionalPreallocatedBuffer, const ma_allocation_callbacks* pAllocationCallbacks, ma_pcm_rb* pRB)
{
    return ma_pcm_rb_init_ex(format, channels, bufferSizeInFrames, 1, 0, pOptionalPreallocatedBuffer, pAllocationCallbacks, pRB);
}

MA_API void ma_pcm_rb_uninit(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return;
    }

    ma_data_source_uninit(&pRB->ds);
    ma_rb_uninit(&pRB->rb);
}

MA_API void ma_pcm_rb_reset(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return;
    }

    ma_rb_reset(&pRB->rb);
}

MA_API ma_result ma_pcm_rb_acquire_read(ma_pcm_rb* pRB, ma_uint32* pSizeInFrames, void** ppBufferOut)
{
    size_t sizeInBytes;
    ma_result result;

    if (pRB == NULL || pSizeInFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    sizeInBytes = *pSizeInFrames * ma_pcm_rb_get_bpf(pRB);

    result = ma_rb_acquire_read(&pRB->rb, &sizeInBytes, ppBufferOut);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pSizeInFrames = (ma_uint32)(sizeInBytes / (size_t)ma_pcm_rb_get_bpf(pRB));
    return MA_SUCCESS;
}

MA_API ma_result ma_pcm_rb_commit_read(ma_pcm_rb* pRB, ma_uint32 sizeInFrames)
{
    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_rb_commit_read(&pRB->rb, sizeInFrames * ma_pcm_rb_get_bpf(pRB));
}

MA_API ma_result ma_pcm_rb_acquire_write(ma_pcm_rb* pRB, ma_uint32* pSizeInFrames, void** ppBufferOut)
{
    size_t sizeInBytes;
    ma_result result;

    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    sizeInBytes = *pSizeInFrames * ma_pcm_rb_get_bpf(pRB);

    result = ma_rb_acquire_write(&pRB->rb, &sizeInBytes, ppBufferOut);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pSizeInFrames = (ma_uint32)(sizeInBytes / ma_pcm_rb_get_bpf(pRB));
    return MA_SUCCESS;
}

MA_API ma_result ma_pcm_rb_commit_write(ma_pcm_rb* pRB, ma_uint32 sizeInFrames)
{
    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_rb_commit_write(&pRB->rb, sizeInFrames * ma_pcm_rb_get_bpf(pRB));
}

MA_API ma_result ma_pcm_rb_seek_read(ma_pcm_rb* pRB, ma_uint32 offsetInFrames)
{
    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_rb_seek_read(&pRB->rb, offsetInFrames * ma_pcm_rb_get_bpf(pRB));
}

MA_API ma_result ma_pcm_rb_seek_write(ma_pcm_rb* pRB, ma_uint32 offsetInFrames)
{
    if (pRB == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_rb_seek_write(&pRB->rb, offsetInFrames * ma_pcm_rb_get_bpf(pRB));
}

MA_API ma_int32 ma_pcm_rb_pointer_distance(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return ma_rb_pointer_distance(&pRB->rb) / ma_pcm_rb_get_bpf(pRB);
}

MA_API ma_uint32 ma_pcm_rb_available_read(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return ma_rb_available_read(&pRB->rb) / ma_pcm_rb_get_bpf(pRB);
}

MA_API ma_uint32 ma_pcm_rb_available_write(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return ma_rb_available_write(&pRB->rb) / ma_pcm_rb_get_bpf(pRB);
}

MA_API ma_uint32 ma_pcm_rb_get_subbuffer_size(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return (ma_uint32)(ma_rb_get_subbuffer_size(&pRB->rb) / ma_pcm_rb_get_bpf(pRB));
}

MA_API ma_uint32 ma_pcm_rb_get_subbuffer_stride(ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return (ma_uint32)(ma_rb_get_subbuffer_stride(&pRB->rb) / ma_pcm_rb_get_bpf(pRB));
}

MA_API ma_uint32 ma_pcm_rb_get_subbuffer_offset(ma_pcm_rb* pRB, ma_uint32 subbufferIndex)
{
    if (pRB == NULL) {
        return 0;
    }

    return (ma_uint32)(ma_rb_get_subbuffer_offset(&pRB->rb, subbufferIndex) / ma_pcm_rb_get_bpf(pRB));
}

MA_API void* ma_pcm_rb_get_subbuffer_ptr(ma_pcm_rb* pRB, ma_uint32 subbufferIndex, void* pBuffer)
{
    if (pRB == NULL) {
        return NULL;
    }

    return ma_rb_get_subbuffer_ptr(&pRB->rb, subbufferIndex, pBuffer);
}

MA_API ma_format ma_pcm_rb_get_format(const ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return ma_format_unknown;
    }

    return pRB->format;
}

MA_API ma_uint32 ma_pcm_rb_get_channels(const ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return pRB->channels;
}

MA_API ma_uint32 ma_pcm_rb_get_sample_rate(const ma_pcm_rb* pRB)
{
    if (pRB == NULL) {
        return 0;
    }

    return pRB->sampleRate;
}

MA_API void ma_pcm_rb_set_sample_rate(ma_pcm_rb* pRB, ma_uint32 sampleRate)
{
    if (pRB == NULL) {
        return;
    }

    pRB->sampleRate = sampleRate;
}



MA_API ma_result ma_duplex_rb_init(ma_format captureFormat, ma_uint32 captureChannels, ma_uint32 sampleRate, ma_uint32 captureInternalSampleRate, ma_uint32 captureInternalPeriodSizeInFrames, const ma_allocation_callbacks* pAllocationCallbacks, ma_duplex_rb* pRB)
{
    ma_result result;
    ma_uint32 sizeInFrames;

    sizeInFrames = (ma_uint32)ma_calculate_frame_count_after_resampling(sampleRate, captureInternalSampleRate, captureInternalPeriodSizeInFrames * 5);
    if (sizeInFrames == 0) {
        return MA_INVALID_ARGS;
    }

    result = ma_pcm_rb_init(captureFormat, captureChannels, sizeInFrames, NULL, pAllocationCallbacks, &pRB->rb);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Seek forward a bit so we have a bit of a buffer in case of desyncs. */
    ma_pcm_rb_seek_write((ma_pcm_rb*)pRB, captureInternalPeriodSizeInFrames * 2);

    return MA_SUCCESS;
}

MA_API ma_result ma_duplex_rb_uninit(ma_duplex_rb* pRB)
{
    ma_pcm_rb_uninit((ma_pcm_rb*)pRB);
    return MA_SUCCESS;
}



/**************************************************************************************************************************************************************

Miscellaneous Helpers

**************************************************************************************************************************************************************/
MA_API const char* ma_result_description(ma_result result)
{
    switch (result)
    {
        case MA_SUCCESS:                       return "No error";
        case MA_ERROR:                         return "Unknown error";
        case MA_INVALID_ARGS:                  return "Invalid argument";
        case MA_INVALID_OPERATION:             return "Invalid operation";
        case MA_OUT_OF_MEMORY:                 return "Out of memory";
        case MA_OUT_OF_RANGE:                  return "Out of range";
        case MA_ACCESS_DENIED:                 return "Permission denied";
        case MA_DOES_NOT_EXIST:                return "Resource does not exist";
        case MA_ALREADY_EXISTS:                return "Resource already exists";
        case MA_TOO_MANY_OPEN_FILES:           return "Too many open files";
        case MA_INVALID_FILE:                  return "Invalid file";
        case MA_TOO_BIG:                       return "Too large";
        case MA_PATH_TOO_LONG:                 return "Path too long";
        case MA_NAME_TOO_LONG:                 return "Name too long";
        case MA_NOT_DIRECTORY:                 return "Not a directory";
        case MA_IS_DIRECTORY:                  return "Is a directory";
        case MA_DIRECTORY_NOT_EMPTY:           return "Directory not empty";
        case MA_AT_END:                        return "At end";
        case MA_NO_SPACE:                      return "No space available";
        case MA_BUSY:                          return "Device or resource busy";
        case MA_IO_ERROR:                      return "Input/output error";
        case MA_INTERRUPT:                     return "Interrupted";
        case MA_UNAVAILABLE:                   return "Resource unavailable";
        case MA_ALREADY_IN_USE:                return "Resource already in use";
        case MA_BAD_ADDRESS:                   return "Bad address";
        case MA_BAD_SEEK:                      return "Illegal seek";
        case MA_BAD_PIPE:                      return "Broken pipe";
        case MA_DEADLOCK:                      return "Deadlock";
        case MA_TOO_MANY_LINKS:                return "Too many links";
        case MA_NOT_IMPLEMENTED:               return "Not implemented";
        case MA_NO_MESSAGE:                    return "No message of desired type";
        case MA_BAD_MESSAGE:                   return "Invalid message";
        case MA_NO_DATA_AVAILABLE:             return "No data available";
        case MA_INVALID_DATA:                  return "Invalid data";
        case MA_TIMEOUT:                       return "Timeout";
        case MA_NO_NETWORK:                    return "Network unavailable";
        case MA_NOT_UNIQUE:                    return "Not unique";
        case MA_NOT_SOCKET:                    return "Socket operation on non-socket";
        case MA_NO_ADDRESS:                    return "Destination address required";
        case MA_BAD_PROTOCOL:                  return "Protocol wrong type for socket";
        case MA_PROTOCOL_UNAVAILABLE:          return "Protocol not available";
        case MA_PROTOCOL_NOT_SUPPORTED:        return "Protocol not supported";
        case MA_PROTOCOL_FAMILY_NOT_SUPPORTED: return "Protocol family not supported";
        case MA_ADDRESS_FAMILY_NOT_SUPPORTED:  return "Address family not supported";
        case MA_SOCKET_NOT_SUPPORTED:          return "Socket type not supported";
        case MA_CONNECTION_RESET:              return "Connection reset";
        case MA_ALREADY_CONNECTED:             return "Already connected";
        case MA_NOT_CONNECTED:                 return "Not connected";
        case MA_CONNECTION_REFUSED:            return "Connection refused";
        case MA_NO_HOST:                       return "No host";
        case MA_IN_PROGRESS:                   return "Operation in progress";
        case MA_CANCELLED:                     return "Operation cancelled";
        case MA_MEMORY_ALREADY_MAPPED:         return "Memory already mapped";

        case MA_FORMAT_NOT_SUPPORTED:          return "Format not supported";
        case MA_DEVICE_TYPE_NOT_SUPPORTED:     return "Device type not supported";
        case MA_SHARE_MODE_NOT_SUPPORTED:      return "Share mode not supported";
        case MA_NO_BACKEND:                    return "No backend";
        case MA_NO_DEVICE:                     return "No device";
        case MA_API_NOT_FOUND:                 return "API not found";
        case MA_INVALID_DEVICE_CONFIG:         return "Invalid device config";

        case MA_DEVICE_NOT_INITIALIZED:        return "Device not initialized";
        case MA_DEVICE_NOT_STARTED:            return "Device not started";

        case MA_FAILED_TO_INIT_BACKEND:        return "Failed to initialize backend";
        case MA_FAILED_TO_OPEN_BACKEND_DEVICE: return "Failed to open backend device";
        case MA_FAILED_TO_START_BACKEND_DEVICE: return "Failed to start backend device";
        case MA_FAILED_TO_STOP_BACKEND_DEVICE: return "Failed to stop backend device";

        default:                               return "Unknown error";
    }
}

MA_API void* ma_malloc(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        if (pAllocationCallbacks->onMalloc != NULL) {
            return pAllocationCallbacks->onMalloc(sz, pAllocationCallbacks->pUserData);
        } else {
            return NULL;    /* Do not fall back to the default implementation. */
        }
    } else {
        return ma__malloc_default(sz, NULL);
    }
}

MA_API void* ma_calloc(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    void* p = ma_malloc(sz, pAllocationCallbacks);
    if (p != NULL) {
        MA_ZERO_MEMORY(p, sz);
    }

    return p;
}

MA_API void* ma_realloc(void* p, size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        if (pAllocationCallbacks->onRealloc != NULL) {
            return pAllocationCallbacks->onRealloc(p, sz, pAllocationCallbacks->pUserData);
        } else {
            return NULL;    /* Do not fall back to the default implementation. */
        }
    } else {
        return ma__realloc_default(p, sz, NULL);
    }
}

MA_API void ma_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (p == NULL) {
        return;
    }

    if (pAllocationCallbacks != NULL) {
        if (pAllocationCallbacks->onFree != NULL) {
            pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
        } else {
            return; /* Do no fall back to the default implementation. */
        }
    } else {
        ma__free_default(p, NULL);
    }
}

MA_API void* ma_aligned_malloc(size_t sz, size_t alignment, const ma_allocation_callbacks* pAllocationCallbacks)
{
    size_t extraBytes;
    void* pUnaligned;
    void* pAligned;

    if (alignment == 0) {
        return 0;
    }

    extraBytes = alignment-1 + sizeof(void*);

    pUnaligned = ma_malloc(sz + extraBytes, pAllocationCallbacks);
    if (pUnaligned == NULL) {
        return NULL;
    }

    pAligned = (void*)(((ma_uintptr)pUnaligned + extraBytes) & ~((ma_uintptr)(alignment-1)));
    ((void**)pAligned)[-1] = pUnaligned;

    return pAligned;
}

MA_API void ma_aligned_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_free(((void**)p)[-1], pAllocationCallbacks);
}

MA_API const char* ma_get_format_name(ma_format format)
{
    switch (format)
    {
        case ma_format_unknown: return "Unknown";
        case ma_format_u8:      return "8-bit Unsigned Integer";
        case ma_format_s16:     return "16-bit Signed Integer";
        case ma_format_s24:     return "24-bit Signed Integer (Tightly Packed)";
        case ma_format_s32:     return "32-bit Signed Integer";
        case ma_format_f32:     return "32-bit IEEE Floating Point";
        default:                return "Invalid";
    }
}

MA_API void ma_blend_f32(float* pOut, float* pInA, float* pInB, float factor, ma_uint32 channels)
{
    ma_uint32 i;
    for (i = 0; i < channels; ++i) {
        pOut[i] = ma_mix_f32(pInA[i], pInB[i], factor);
    }
}


MA_API ma_uint32 ma_get_bytes_per_sample(ma_format format)
{
    ma_uint32 sizes[] = {
        0,  /* unknown */
        1,  /* u8 */
        2,  /* s16 */
        3,  /* s24 */
        4,  /* s32 */
        4,  /* f32 */
    };
    return sizes[format];
}



#define MA_DATA_SOURCE_DEFAULT_RANGE_BEG        0
#define MA_DATA_SOURCE_DEFAULT_RANGE_END        ~((ma_uint64)0)
#define MA_DATA_SOURCE_DEFAULT_LOOP_POINT_BEG   0
#define MA_DATA_SOURCE_DEFAULT_LOOP_POINT_END   ~((ma_uint64)0)

MA_API ma_data_source_config ma_data_source_config_init(void)
{
    ma_data_source_config config;

    MA_ZERO_OBJECT(&config);

    return config;
}


MA_API ma_result ma_data_source_init(const ma_data_source_config* pConfig, ma_data_source* pDataSource)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDataSourceBase);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->vtable == NULL) {
        return MA_INVALID_ARGS;
    }

    pDataSourceBase->vtable           = pConfig->vtable;
    pDataSourceBase->rangeBegInFrames = MA_DATA_SOURCE_DEFAULT_RANGE_BEG;
    pDataSourceBase->rangeEndInFrames = MA_DATA_SOURCE_DEFAULT_RANGE_END;
    pDataSourceBase->loopBegInFrames  = MA_DATA_SOURCE_DEFAULT_LOOP_POINT_BEG;
    pDataSourceBase->loopEndInFrames  = MA_DATA_SOURCE_DEFAULT_LOOP_POINT_END;
    pDataSourceBase->pCurrent         = pDataSource;    /* Always read from ourself by default. */
    pDataSourceBase->pNext            = NULL;
    pDataSourceBase->onGetNext        = NULL;

    return MA_SUCCESS;
}

MA_API void ma_data_source_uninit(ma_data_source* pDataSource)
{
    if (pDataSource == NULL) {
        return;
    }

    /*
    This is placeholder in case we need this later. Data sources need to call this in their
    uninitialization routine to ensure things work later on if something is added here.
    */
}

static ma_result ma_data_source_resolve_current(ma_data_source* pDataSource, ma_data_source** ppCurrentDataSource)
{
    ma_data_source_base* pCurrentDataSource = (ma_data_source_base*)pDataSource;

    MA_ASSERT(pDataSource         != NULL);
    MA_ASSERT(ppCurrentDataSource != NULL);

    if (pCurrentDataSource->pCurrent == NULL) {
        /*
        The current data source is NULL. If we're using this in the context of a chain we need to return NULL
        here so that we don't end up looping. Otherwise we just return the data source itself.
        */
        if (pCurrentDataSource->pNext != NULL || pCurrentDataSource->onGetNext != NULL) {
            pCurrentDataSource = NULL;
        } else {
            pCurrentDataSource = (ma_data_source_base*)pDataSource; /* Not being used in a chain. Make sure we just always read from the data source itself at all times. */
        }
    } else {
        pCurrentDataSource = (ma_data_source_base*)pCurrentDataSource->pCurrent;
    }

    *ppCurrentDataSource = pCurrentDataSource;

    return MA_SUCCESS;
}

static ma_result ma_data_source_read_pcm_frames_from_backend(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    MA_ASSERT(pDataSourceBase                 != NULL);
    MA_ASSERT(pDataSourceBase->vtable         != NULL);
    MA_ASSERT(pDataSourceBase->vtable->onRead != NULL);
    MA_ASSERT(pFramesRead != NULL);

    if (pFramesOut != NULL) {
        return pDataSourceBase->vtable->onRead(pDataSourceBase, pFramesOut, frameCount, pFramesRead);
    } else {
        /*
        No output buffer. Probably seeking forward. Read and discard. Can probably optimize this in terms of
        onSeek and onGetCursor, but need to keep in mind that the data source may not implement these functions.
        */
        ma_result result;
        ma_uint64 framesRead;
        ma_format format;
        ma_uint32 channels;
        ma_uint64 discardBufferCapInFrames;
        ma_uint8  pDiscardBuffer[4096];

        result = ma_data_source_get_data_format(pDataSource, &format, &channels, NULL, NULL, 0);
        if (result != MA_SUCCESS) {
            return result;
        }

        discardBufferCapInFrames = sizeof(pDiscardBuffer) / ma_get_bytes_per_frame(format, channels);

        framesRead = 0;
        while (framesRead < frameCount) {
            ma_uint64 framesReadThisIteration = 0;
            ma_uint64 framesToRead = frameCount - framesRead;
            if (framesToRead > discardBufferCapInFrames) {
                framesToRead = discardBufferCapInFrames;
            }

            result = pDataSourceBase->vtable->onRead(pDataSourceBase, pDiscardBuffer, framesToRead, &framesReadThisIteration);
            if (result != MA_SUCCESS) {
                return result;
            }

            framesRead += framesReadThisIteration;
        }

        *pFramesRead = framesRead;

        return MA_SUCCESS;
    }
}

static ma_result ma_data_source_read_pcm_frames_within_range(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;
    ma_result result;
    ma_uint64 framesRead = 0;
    ma_bool32 loop = ma_data_source_is_looping(pDataSource);

    if (pDataSourceBase == NULL) {
        return MA_AT_END;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    MA_ASSERT(pDataSourceBase->vtable != NULL);

    if ((pDataSourceBase->vtable->flags & MA_DATA_SOURCE_SELF_MANAGED_RANGE_AND_LOOP_POINT) != 0 || (pDataSourceBase->rangeEndInFrames == ~((ma_uint64)0) && (pDataSourceBase->loopEndInFrames == ~((ma_uint64)0) || loop == MA_FALSE))) {
        /* Either the data source is self-managing the range, or no range is set - just read like normal. The data source itself will tell us when the end is reached. */
        result = ma_data_source_read_pcm_frames_from_backend(pDataSource, pFramesOut, frameCount, &framesRead);
    } else {
        /* Need to clamp to within the range. */
        ma_uint64 relativeCursor;
        ma_uint64 absoluteCursor;

        result = ma_data_source_get_cursor_in_pcm_frames(pDataSourceBase, &relativeCursor);
        if (result != MA_SUCCESS) {
            /* Failed to retrieve the cursor. Cannot read within a range or loop points. Just read like normal - this may happen for things like noise data sources where it doesn't really matter. */
            result = ma_data_source_read_pcm_frames_from_backend(pDataSource, pFramesOut, frameCount, &framesRead);
        } else {
            ma_uint64 rangeBeg;
            ma_uint64 rangeEnd;

            /* We have the cursor. We need to make sure we don't read beyond our range. */
            rangeBeg = pDataSourceBase->rangeBegInFrames;
            rangeEnd = pDataSourceBase->rangeEndInFrames;

            absoluteCursor = rangeBeg + relativeCursor;

            /* If looping, make sure we're within range. */
            if (loop) {
                if (pDataSourceBase->loopEndInFrames != ~((ma_uint64)0)) {
                    rangeEnd = ma_min(rangeEnd, pDataSourceBase->rangeBegInFrames + pDataSourceBase->loopEndInFrames);
                }
            }

            if (frameCount > (rangeEnd - absoluteCursor) && rangeEnd != ~((ma_uint64)0)) {
                frameCount = (rangeEnd - absoluteCursor);
            }

            /*
            If the cursor is sitting on the end of the range the frame count will be set to 0 which can
            result in MA_INVALID_ARGS. In this case, we don't want to try reading, but instead return
            MA_AT_END so the higher level function can know about it.
            */
            if (frameCount > 0) {
                result = ma_data_source_read_pcm_frames_from_backend(pDataSource, pFramesOut, frameCount, &framesRead);
            } else {
                result = MA_AT_END; /* The cursor is sitting on the end of the range which means we're at the end. */
            }
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = framesRead;
    }

    /* We need to make sure MA_AT_END is returned if we hit the end of the range. */
    if (result == MA_SUCCESS && framesRead == 0) {
        result  = MA_AT_END;
    }

    return result;
}

MA_API ma_result ma_data_source_read_pcm_frames(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;
    ma_data_source_base* pCurrentDataSource;
    void* pRunningFramesOut = pFramesOut;
    ma_uint64 totalFramesProcessed = 0;
    ma_format format;
    ma_uint32 channels;
    ma_uint32 emptyLoopCounter = 0; /* Keeps track of how many times 0 frames have been read. For infinite loop detection of sounds with no audio data. */
    ma_bool32 loop;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pDataSourceBase == NULL) {
        return MA_INVALID_ARGS;
    }

    loop = ma_data_source_is_looping(pDataSource);

    /*
    We need to know the data format so we can advance the output buffer as we read frames. If this
    fails, chaining will not work and we'll just read as much as we can from the current source.
    */
    if (ma_data_source_get_data_format(pDataSource, &format, &channels, NULL, NULL, 0) != MA_SUCCESS) {
        result = ma_data_source_resolve_current(pDataSource, (ma_data_source**)&pCurrentDataSource);
        if (result != MA_SUCCESS) {
            return result;
        }

        return ma_data_source_read_pcm_frames_within_range(pCurrentDataSource, pFramesOut, frameCount, pFramesRead);
    }

    /*
    Looping is a bit of a special case. When the `loop` argument is true, chaining will not work and
    only the current data source will be read from.
    */

    /* Keep reading until we've read as many frames as possible. */
    while (totalFramesProcessed < frameCount) {
        ma_uint64 framesProcessed;
        ma_uint64 framesRemaining = frameCount - totalFramesProcessed;

        /* We need to resolve the data source that we'll actually be reading from. */
        result = ma_data_source_resolve_current(pDataSource, (ma_data_source**)&pCurrentDataSource);
        if (result != MA_SUCCESS) {
            break;
        }

        if (pCurrentDataSource == NULL) {
            break;
        }

        result = ma_data_source_read_pcm_frames_within_range(pCurrentDataSource, pRunningFramesOut, framesRemaining, &framesProcessed);
        totalFramesProcessed += framesProcessed;

        /*
        If we encountered an error from the read callback, make sure it's propagated to the caller. The caller may need to know whether or not MA_BUSY is returned which is
        not necessarily considered an error.
        */
        if (result != MA_SUCCESS && result != MA_AT_END) {
            break;
        }

        /*
        We can determine if we've reached the end by checking if ma_data_source_read_pcm_frames_within_range() returned
        MA_AT_END. To loop back to the start, all we need to do is seek back to the first frame.
        */
        if (result == MA_AT_END) {
            /*
            The result needs to be reset back to MA_SUCCESS (from MA_AT_END) so that we don't
            accidentally return MA_AT_END when data has been read in prior loop iterations. at the
            end of this function, the result will be checked for MA_SUCCESS, and if the total
            number of frames processed is 0, will be explicitly set to MA_AT_END.
            */
            result = MA_SUCCESS;

            /*
            We reached the end. If we're looping, we just loop back to the start of the current
            data source. If we're not looping we need to check if we have another in the chain, and
            if so, switch to it.
            */
            if (loop) {
                if (framesProcessed == 0) {
                    emptyLoopCounter += 1;
                    if (emptyLoopCounter > 1) {
                        break;  /* Infinite loop detected. Get out. */
                    }
                } else {
                    emptyLoopCounter = 0;
                }

                result = ma_data_source_seek_to_pcm_frame(pCurrentDataSource, pCurrentDataSource->loopBegInFrames);
                if (result != MA_SUCCESS) {
                    break;  /* Failed to loop. Abort. */
                }

                /* Don't return MA_AT_END for looping sounds. */
                result = MA_SUCCESS;
            } else {
                if (pCurrentDataSource->pNext != NULL) {
                    pDataSourceBase->pCurrent = pCurrentDataSource->pNext;
                } else if (pCurrentDataSource->onGetNext != NULL) {
                    pDataSourceBase->pCurrent = pCurrentDataSource->onGetNext(pCurrentDataSource);
                    if (pDataSourceBase->pCurrent == NULL) {
                        break;  /* Our callback did not return a next data source. We're done. */
                    }
                } else {
                    /* Reached the end of the chain. We're done. */
                    break;
                }

                /* The next data source needs to be rewound to ensure data is read in looping scenarios. */
                result = ma_data_source_seek_to_pcm_frame(pDataSourceBase->pCurrent, 0);
                if (result != MA_SUCCESS) {
                    break;
                }
            }
        }

        if (pRunningFramesOut != NULL) {
            pRunningFramesOut = ma_offset_ptr(pRunningFramesOut, framesProcessed * ma_get_bytes_per_frame(format, channels));
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesProcessed;
    }

    MA_ASSERT(!(result == MA_AT_END && totalFramesProcessed > 0));  /* We should never be returning MA_AT_END if we read some data. */

    if (result == MA_SUCCESS && totalFramesProcessed == 0) {
        result  = MA_AT_END;
    }

    return result;
}

MA_API ma_result ma_data_source_seek_pcm_frames(ma_data_source* pDataSource, ma_uint64 frameCount, ma_uint64* pFramesSeeked)
{
    return ma_data_source_read_pcm_frames(pDataSource, NULL, frameCount, pFramesSeeked);
}

MA_API ma_result ma_data_source_seek_to_pcm_frame(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSourceBase == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDataSourceBase->vtable->onSeek == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    if (frameIndex > pDataSourceBase->rangeEndInFrames) {
        return MA_INVALID_OPERATION;    /* Trying to seek too far forward. */
    }

    MA_ASSERT(pDataSourceBase->vtable != NULL);

    return pDataSourceBase->vtable->onSeek(pDataSource, pDataSourceBase->rangeBegInFrames + frameIndex);
}

MA_API ma_result ma_data_source_seek_seconds(ma_data_source* pDataSource, float secondCount, float* pSecondsSeeked)
{
    ma_uint64 frameCount;
    ma_uint64 framesSeeked = 0;
    ma_uint32 sampleRate;
    ma_result result;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_data_source_get_data_format(pDataSource, NULL, NULL, &sampleRate, NULL, 0);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* We need PCM frames instead of seconds */
    frameCount = (ma_uint64)(secondCount * sampleRate);

    result = ma_data_source_seek_pcm_frames(pDataSource, frameCount, &framesSeeked);

    /* VC6 doesn't support division between unsigned 64-bit integer and floating point number. Signed integer needed. This shouldn't affect anything in practice */
    *pSecondsSeeked = (ma_int64)framesSeeked / (float)sampleRate;
    return result;
}

MA_API ma_result ma_data_source_seek_to_second(ma_data_source* pDataSource, float seekPointInSeconds)
{
    ma_uint64 frameIndex;
    ma_uint32 sampleRate;
    ma_result result;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_data_source_get_data_format(pDataSource, NULL, NULL, &sampleRate, NULL, 0);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* We need PCM frames instead of seconds */
    frameIndex = (ma_uint64)(seekPointInSeconds * sampleRate);

    return ma_data_source_seek_to_pcm_frame(pDataSource, frameIndex);
}

MA_API ma_result ma_data_source_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;
    ma_result result;
    ma_format format;
    ma_uint32 channels;
    ma_uint32 sampleRate;

    /* Initialize to defaults for safety just in case the data source does not implement this callback. */
    if (pFormat != NULL) {
        *pFormat = ma_format_unknown;
    }
    if (pChannels != NULL) {
        *pChannels = 0;
    }
    if (pSampleRate != NULL) {
        *pSampleRate = 0;
    }
    if (pChannelMap != NULL) {
        MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channelMapCap);
    }

    if (pDataSourceBase == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ASSERT(pDataSourceBase->vtable != NULL);

    if (pDataSourceBase->vtable->onGetDataFormat == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    result = pDataSourceBase->vtable->onGetDataFormat(pDataSource, &format, &channels, &sampleRate, pChannelMap, channelMapCap);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pFormat != NULL) {
        *pFormat = format;
    }
    if (pChannels != NULL) {
        *pChannels = channels;
    }
    if (pSampleRate != NULL) {
        *pSampleRate = sampleRate;
    }

    /* Channel map was passed in directly to the callback. This is safe due to the channelMapCap parameter. */

    return MA_SUCCESS;
}

MA_API ma_result ma_data_source_get_cursor_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;
    ma_result result;
    ma_uint64 cursor;

    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    if (pDataSourceBase == NULL) {
        return MA_SUCCESS;
    }

    MA_ASSERT(pDataSourceBase->vtable != NULL);

    if (pDataSourceBase->vtable->onGetCursor == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    result = pDataSourceBase->vtable->onGetCursor(pDataSourceBase, &cursor);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* The cursor needs to be made relative to the start of the range. */
    if (cursor < pDataSourceBase->rangeBegInFrames) {   /* Safety check so we don't return some huge number. */
        *pCursor = 0;
    } else {
        *pCursor = cursor - pDataSourceBase->rangeBegInFrames;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_data_source_get_length_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pLength)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;

    if (pDataSourceBase == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ASSERT(pDataSourceBase->vtable != NULL);

    /*
    If we have a range defined we'll use that to determine the length. This is one of rare times
    where we'll actually trust the caller. If they've set the range, I think it's mostly safe to
    assume they've set it based on some higher level knowledge of the structure of the sound bank.
    */
    if (pDataSourceBase->rangeEndInFrames != ~((ma_uint64)0)) {
        *pLength = pDataSourceBase->rangeEndInFrames - pDataSourceBase->rangeBegInFrames;
        return MA_SUCCESS;
    }

    /*
    Getting here means a range is not defined so we'll need to get the data source itself to tell
    us the length.
    */
    if (pDataSourceBase->vtable->onGetLength == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pDataSourceBase->vtable->onGetLength(pDataSource, pLength);
}

MA_API ma_result ma_data_source_get_cursor_in_seconds(ma_data_source* pDataSource, float* pCursor)
{
    ma_result result;
    ma_uint64 cursorInPCMFrames;
    ma_uint32 sampleRate;

    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    result = ma_data_source_get_cursor_in_pcm_frames(pDataSource, &cursorInPCMFrames);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_data_source_get_data_format(pDataSource, NULL, NULL, &sampleRate, NULL, 0);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* VC6 does not support division of unsigned 64-bit integers with floating point numbers. Need to use a signed number. This shouldn't effect anything in practice. */
    *pCursor = (ma_int64)cursorInPCMFrames / (float)sampleRate;

    return MA_SUCCESS;
}

MA_API ma_result ma_data_source_get_length_in_seconds(ma_data_source* pDataSource, float* pLength)
{
    ma_result result;
    ma_uint64 lengthInPCMFrames;
    ma_uint32 sampleRate;

    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;

    result = ma_data_source_get_length_in_pcm_frames(pDataSource, &lengthInPCMFrames);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_data_source_get_data_format(pDataSource, NULL, NULL, &sampleRate, NULL, 0);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* VC6 does not support division of unsigned 64-bit integers with floating point numbers. Need to use a signed number. This shouldn't effect anything in practice. */
    *pLength = (ma_int64)lengthInPCMFrames / (float)sampleRate;

    return MA_SUCCESS;
}

MA_API ma_result ma_data_source_set_looping(ma_data_source* pDataSource, ma_bool32 isLooping)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_exchange_32(&pDataSourceBase->isLooping, isLooping);

    MA_ASSERT(pDataSourceBase->vtable != NULL);

    /* If there's no callback for this just treat it as a successful no-op. */
    if (pDataSourceBase->vtable->onSetLooping == NULL) {
        return MA_SUCCESS;
    }

    return pDataSourceBase->vtable->onSetLooping(pDataSource, isLooping);
}

MA_API ma_bool32 ma_data_source_is_looping(const ma_data_source* pDataSource)
{
    const ma_data_source_base* pDataSourceBase = (const ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_FALSE;
    }

    return ma_atomic_load_32(&pDataSourceBase->isLooping);
}

MA_API ma_result ma_data_source_set_range_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 rangeBegInFrames, ma_uint64 rangeEndInFrames)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;
    ma_result result;
    ma_uint64 relativeCursor;
    ma_uint64 absoluteCursor;
    ma_bool32 doSeekAdjustment = MA_FALSE;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if (rangeEndInFrames < rangeBegInFrames) {
        return MA_INVALID_ARGS; /* The end of the range must come after the beginning. */
    }

    /*
    We may need to adjust the position of the cursor to ensure it's clamped to the range. Grab it now
    so we can calculate its absolute position before we change the range.
    */
    result = ma_data_source_get_cursor_in_pcm_frames(pDataSource, &relativeCursor);
    if (result == MA_SUCCESS) {
        doSeekAdjustment = MA_TRUE;
        absoluteCursor = relativeCursor + pDataSourceBase->rangeBegInFrames;
    } else {
        /*
        We couldn't get the position of the cursor. It probably means the data source has no notion
        of a cursor. We'll just leave it at position 0. Don't treat this as an error.
        */
        doSeekAdjustment = MA_FALSE;
        relativeCursor = 0;
        absoluteCursor = 0;
    }

    pDataSourceBase->rangeBegInFrames = rangeBegInFrames;
    pDataSourceBase->rangeEndInFrames = rangeEndInFrames;

    /*
    The commented out logic below was intended to maintain loop points in response to a change in the
    range. However, this is not useful because it results in the sound breaking when you move the range
    outside of the old loop points. I'm simplifying this by simply resetting the loop points. The
    caller is expected to update their loop points if they change the range.

    In practice this should be mostly a non-issue because the majority of the time the range will be
    set once right after initialization.
    */
    pDataSourceBase->loopBegInFrames = 0;
    pDataSourceBase->loopEndInFrames = ~((ma_uint64)0);


    /*
    Seek to within range. Note that our seek positions here are relative to the new range. We don't want
    to do this if we failed to retrieve the cursor earlier on because it probably means the data source
    has no notion of a cursor. In practice the seek would probably fail (which we silently ignore), but
    I'm just not even going to attempt it.
    */
    if (doSeekAdjustment) {
        if (absoluteCursor < rangeBegInFrames) {
            ma_data_source_seek_to_pcm_frame(pDataSource, 0);
        } else if (absoluteCursor > rangeEndInFrames) {
            ma_data_source_seek_to_pcm_frame(pDataSource, rangeEndInFrames - rangeBegInFrames);
        }
    }

    return MA_SUCCESS;
}

MA_API void ma_data_source_get_range_in_pcm_frames(const ma_data_source* pDataSource, ma_uint64* pRangeBegInFrames, ma_uint64* pRangeEndInFrames)
{
    const ma_data_source_base* pDataSourceBase = (const ma_data_source_base*)pDataSource;

    if (pRangeBegInFrames != NULL) {
        *pRangeBegInFrames = 0;
    }
    if (pRangeEndInFrames != NULL) {
        *pRangeEndInFrames = 0;
    }

    if (pDataSource == NULL) {
        return;
    }

    if (pRangeBegInFrames != NULL) {
        *pRangeBegInFrames = pDataSourceBase->rangeBegInFrames;
    }

    if (pRangeEndInFrames != NULL) {
        *pRangeEndInFrames = pDataSourceBase->rangeEndInFrames;
    }
}

MA_API ma_result ma_data_source_set_loop_point_in_pcm_frames(ma_data_source* pDataSource, ma_uint64 loopBegInFrames, ma_uint64 loopEndInFrames)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if (loopEndInFrames < loopBegInFrames) {
        return MA_INVALID_ARGS; /* The end of the loop point must come after the beginning. */
    }

    if (loopEndInFrames > pDataSourceBase->rangeEndInFrames && loopEndInFrames != ~((ma_uint64)0)) {
        return MA_INVALID_ARGS; /* The end of the loop point must not go beyond the range. */
    }

    pDataSourceBase->loopBegInFrames = loopBegInFrames;
    pDataSourceBase->loopEndInFrames = loopEndInFrames;

    /* The end cannot exceed the range. */
    if (pDataSourceBase->loopEndInFrames > (pDataSourceBase->rangeEndInFrames - pDataSourceBase->rangeBegInFrames) && pDataSourceBase->loopEndInFrames != ~((ma_uint64)0)) {
        pDataSourceBase->loopEndInFrames = (pDataSourceBase->rangeEndInFrames - pDataSourceBase->rangeBegInFrames);
    }

    return MA_SUCCESS;
}

MA_API void ma_data_source_get_loop_point_in_pcm_frames(const ma_data_source* pDataSource, ma_uint64* pLoopBegInFrames, ma_uint64* pLoopEndInFrames)
{
    const ma_data_source_base* pDataSourceBase = (const ma_data_source_base*)pDataSource;

    if (pLoopBegInFrames != NULL) {
        *pLoopBegInFrames = 0;
    }
    if (pLoopEndInFrames != NULL) {
        *pLoopEndInFrames = 0;
    }

    if (pDataSource == NULL) {
        return;
    }

    if (pLoopBegInFrames != NULL) {
        *pLoopBegInFrames = pDataSourceBase->loopBegInFrames;
    }

    if (pLoopEndInFrames != NULL) {
        *pLoopEndInFrames = pDataSourceBase->loopEndInFrames;
    }
}

MA_API ma_result ma_data_source_set_current(ma_data_source* pDataSource, ma_data_source* pCurrentDataSource)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    pDataSourceBase->pCurrent = pCurrentDataSource;

    return MA_SUCCESS;
}

MA_API ma_data_source* ma_data_source_get_current(const ma_data_source* pDataSource)
{
    const ma_data_source_base* pDataSourceBase = (const ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return NULL;
    }

    return pDataSourceBase->pCurrent;
}

MA_API ma_result ma_data_source_set_next(ma_data_source* pDataSource, ma_data_source* pNextDataSource)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    pDataSourceBase->pNext = pNextDataSource;

    return MA_SUCCESS;
}

MA_API ma_data_source* ma_data_source_get_next(const ma_data_source* pDataSource)
{
    const ma_data_source_base* pDataSourceBase = (const ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return NULL;
    }

    return pDataSourceBase->pNext;
}

MA_API ma_result ma_data_source_set_next_callback(ma_data_source* pDataSource, ma_data_source_get_next_proc onGetNext)
{
    ma_data_source_base* pDataSourceBase = (ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    pDataSourceBase->onGetNext = onGetNext;

    return MA_SUCCESS;
}

MA_API ma_data_source_get_next_proc ma_data_source_get_next_callback(const ma_data_source* pDataSource)
{
    const ma_data_source_base* pDataSourceBase = (const ma_data_source_base*)pDataSource;

    if (pDataSource == NULL) {
        return NULL;
    }

    return pDataSourceBase->onGetNext;
}


static ma_result ma_audio_buffer_ref__data_source_on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_audio_buffer_ref* pAudioBufferRef = (ma_audio_buffer_ref*)pDataSource;
    ma_uint64 framesRead = ma_audio_buffer_ref_read_pcm_frames(pAudioBufferRef, pFramesOut, frameCount, MA_FALSE);

    if (pFramesRead != NULL) {
        *pFramesRead = framesRead;
    }

    if (framesRead < frameCount || framesRead == 0) {
        return MA_AT_END;
    }

    return MA_SUCCESS;
}

static ma_result ma_audio_buffer_ref__data_source_on_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_audio_buffer_ref_seek_to_pcm_frame((ma_audio_buffer_ref*)pDataSource, frameIndex);
}

static ma_result ma_audio_buffer_ref__data_source_on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_audio_buffer_ref* pAudioBufferRef = (ma_audio_buffer_ref*)pDataSource;

    *pFormat     = pAudioBufferRef->format;
    *pChannels   = pAudioBufferRef->channels;
    *pSampleRate = pAudioBufferRef->sampleRate;
    ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pAudioBufferRef->channels);

    return MA_SUCCESS;
}

static ma_result ma_audio_buffer_ref__data_source_on_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    ma_audio_buffer_ref* pAudioBufferRef = (ma_audio_buffer_ref*)pDataSource;

    *pCursor = pAudioBufferRef->cursor;

    return MA_SUCCESS;
}

static ma_result ma_audio_buffer_ref__data_source_on_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    ma_audio_buffer_ref* pAudioBufferRef = (ma_audio_buffer_ref*)pDataSource;

    *pLength = pAudioBufferRef->sizeInFrames;

    return MA_SUCCESS;
}

static ma_data_source_vtable g_ma_audio_buffer_ref_data_source_vtable =
{
    ma_audio_buffer_ref__data_source_on_read,
    ma_audio_buffer_ref__data_source_on_seek,
    ma_audio_buffer_ref__data_source_on_get_data_format,
    ma_audio_buffer_ref__data_source_on_get_cursor,
    ma_audio_buffer_ref__data_source_on_get_length,
    NULL,   /* onSetLooping */
    0
};

MA_API ma_result ma_audio_buffer_ref_init(ma_format format, ma_uint32 channels, const void* pData, ma_uint64 sizeInFrames, ma_audio_buffer_ref* pAudioBufferRef)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pAudioBufferRef);

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_audio_buffer_ref_data_source_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pAudioBufferRef->ds);
    if (result != MA_SUCCESS) {
        return result;
    }

    pAudioBufferRef->format       = format;
    pAudioBufferRef->channels     = channels;
    pAudioBufferRef->sampleRate   = 0;  /* TODO: Version 0.12. Set this to sampleRate. */
    pAudioBufferRef->cursor       = 0;
    pAudioBufferRef->sizeInFrames = sizeInFrames;
    pAudioBufferRef->pData        = pData;

    return MA_SUCCESS;
}

MA_API void ma_audio_buffer_ref_uninit(ma_audio_buffer_ref* pAudioBufferRef)
{
    if (pAudioBufferRef == NULL) {
        return;
    }

    ma_data_source_uninit(&pAudioBufferRef->ds);
}

MA_API ma_result ma_audio_buffer_ref_set_data(ma_audio_buffer_ref* pAudioBufferRef, const void* pData, ma_uint64 sizeInFrames)
{
    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    pAudioBufferRef->cursor       = 0;
    pAudioBufferRef->sizeInFrames = sizeInFrames;
    pAudioBufferRef->pData        = pData;

    return MA_SUCCESS;
}

MA_API ma_uint64 ma_audio_buffer_ref_read_pcm_frames(ma_audio_buffer_ref* pAudioBufferRef, void* pFramesOut, ma_uint64 frameCount, ma_bool32 loop)
{
    ma_uint64 totalFramesRead = 0;

    if (pAudioBufferRef == NULL) {
        return 0;
    }

    if (frameCount == 0) {
        return 0;
    }

    while (totalFramesRead < frameCount) {
        ma_uint64 framesAvailable = pAudioBufferRef->sizeInFrames - pAudioBufferRef->cursor;
        ma_uint64 framesRemaining = frameCount - totalFramesRead;
        ma_uint64 framesToRead;

        framesToRead = framesRemaining;
        if (framesToRead > framesAvailable) {
            framesToRead = framesAvailable;
        }

        if (pFramesOut != NULL) {
            ma_copy_pcm_frames(ma_offset_ptr(pFramesOut, totalFramesRead * ma_get_bytes_per_frame(pAudioBufferRef->format, pAudioBufferRef->channels)), ma_offset_ptr(pAudioBufferRef->pData, pAudioBufferRef->cursor * ma_get_bytes_per_frame(pAudioBufferRef->format, pAudioBufferRef->channels)), framesToRead, pAudioBufferRef->format, pAudioBufferRef->channels);
        }

        totalFramesRead += framesToRead;

        pAudioBufferRef->cursor += framesToRead;
        if (pAudioBufferRef->cursor == pAudioBufferRef->sizeInFrames) {
            if (loop) {
                pAudioBufferRef->cursor = 0;
            } else {
                break;  /* We've reached the end and we're not looping. Done. */
            }
        }

        MA_ASSERT(pAudioBufferRef->cursor < pAudioBufferRef->sizeInFrames);
    }

    return totalFramesRead;
}

MA_API ma_result ma_audio_buffer_ref_seek_to_pcm_frame(ma_audio_buffer_ref* pAudioBufferRef, ma_uint64 frameIndex)
{
    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    if (frameIndex > pAudioBufferRef->sizeInFrames) {
        return MA_INVALID_ARGS;
    }

    pAudioBufferRef->cursor = (size_t)frameIndex;

    return MA_SUCCESS;
}

MA_API ma_result ma_audio_buffer_ref_map(ma_audio_buffer_ref* pAudioBufferRef, void** ppFramesOut, ma_uint64* pFrameCount)
{
    ma_uint64 framesAvailable;
    ma_uint64 frameCount = 0;

    if (ppFramesOut != NULL) {
        *ppFramesOut = NULL;    /* Safety. */
    }

    if (pFrameCount != NULL) {
        frameCount = *pFrameCount;
        *pFrameCount = 0;       /* Safety. */
    }

    if (pAudioBufferRef == NULL || ppFramesOut == NULL || pFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    framesAvailable = pAudioBufferRef->sizeInFrames - pAudioBufferRef->cursor;
    if (frameCount > framesAvailable) {
        frameCount = framesAvailable;
    }

    *ppFramesOut = ma_offset_ptr(pAudioBufferRef->pData, pAudioBufferRef->cursor * ma_get_bytes_per_frame(pAudioBufferRef->format, pAudioBufferRef->channels));
    *pFrameCount = frameCount;

    return MA_SUCCESS;
}

MA_API ma_result ma_audio_buffer_ref_unmap(ma_audio_buffer_ref* pAudioBufferRef, ma_uint64 frameCount)
{
    ma_uint64 framesAvailable;

    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    framesAvailable = pAudioBufferRef->sizeInFrames - pAudioBufferRef->cursor;
    if (frameCount > framesAvailable) {
        return MA_INVALID_ARGS;   /* The frame count was too big. This should never happen in an unmapping. Need to make sure the caller is aware of this. */
    }

    pAudioBufferRef->cursor += frameCount;

    if (pAudioBufferRef->cursor == pAudioBufferRef->sizeInFrames) {
        return MA_AT_END;   /* Successful. Need to tell the caller that the end has been reached so that it can loop if desired. */
    } else {
        return MA_SUCCESS;
    }
}

MA_API ma_bool32 ma_audio_buffer_ref_at_end(const ma_audio_buffer_ref* pAudioBufferRef)
{
    if (pAudioBufferRef == NULL) {
        return MA_FALSE;
    }

    return pAudioBufferRef->cursor == pAudioBufferRef->sizeInFrames;
}

MA_API ma_result ma_audio_buffer_ref_get_cursor_in_pcm_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = pAudioBufferRef->cursor;

    return MA_SUCCESS;
}

MA_API ma_result ma_audio_buffer_ref_get_length_in_pcm_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;

    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = pAudioBufferRef->sizeInFrames;

    return MA_SUCCESS;
}

MA_API ma_result ma_audio_buffer_ref_get_available_frames(const ma_audio_buffer_ref* pAudioBufferRef, ma_uint64* pAvailableFrames)
{
    if (pAvailableFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    *pAvailableFrames = 0;

    if (pAudioBufferRef == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pAudioBufferRef->sizeInFrames <= pAudioBufferRef->cursor) {
        *pAvailableFrames = 0;
    } else {
        *pAvailableFrames = pAudioBufferRef->sizeInFrames - pAudioBufferRef->cursor;
    }

    return MA_SUCCESS;
}




MA_API ma_audio_buffer_config ma_audio_buffer_config_init(ma_format format, ma_uint32 channels, ma_uint64 sizeInFrames, const void* pData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_audio_buffer_config config;

    MA_ZERO_OBJECT(&config);
    config.format       = format;
    config.channels     = channels;
    config.sampleRate   = 0;    /* TODO: Version 0.12. Set this to sampleRate. */
    config.sizeInFrames = sizeInFrames;
    config.pData        = pData;
    ma_allocation_callbacks_init_copy(&config.allocationCallbacks, pAllocationCallbacks);

    return config;
}

static ma_result ma_audio_buffer_init_ex(const ma_audio_buffer_config* pConfig, ma_bool32 doCopy, ma_audio_buffer* pAudioBuffer)
{
    ma_result result;

    if (pAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_MEMORY(pAudioBuffer, sizeof(*pAudioBuffer) - sizeof(pAudioBuffer->_pExtraData));   /* Safety. Don't overwrite the extra data. */

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->sizeInFrames == 0) {
        return MA_INVALID_ARGS; /* Not allowing buffer sizes of 0 frames. */
    }

    result = ma_audio_buffer_ref_init(pConfig->format, pConfig->channels, NULL, 0, &pAudioBuffer->ref);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* TODO: Version 0.12. Set this in ma_audio_buffer_ref_init() instead of here. */
    pAudioBuffer->ref.sampleRate = pConfig->sampleRate;

    ma_allocation_callbacks_init_copy(&pAudioBuffer->allocationCallbacks, &pConfig->allocationCallbacks);

    if (doCopy) {
        ma_uint64 allocationSizeInBytes;
        void* pData;

        allocationSizeInBytes = pConfig->sizeInFrames * ma_get_bytes_per_frame(pConfig->format, pConfig->channels);
        if (allocationSizeInBytes > MA_SIZE_MAX) {
            return MA_OUT_OF_MEMORY;    /* Too big. */
        }

        pData = ma_malloc((size_t)allocationSizeInBytes, &pAudioBuffer->allocationCallbacks);   /* Safe cast to size_t. */
        if (pData == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        if (pConfig->pData != NULL) {
            ma_copy_pcm_frames(pData, pConfig->pData, pConfig->sizeInFrames, pConfig->format, pConfig->channels);
        } else {
            ma_silence_pcm_frames(pData, pConfig->sizeInFrames, pConfig->format, pConfig->channels);
        }

        ma_audio_buffer_ref_set_data(&pAudioBuffer->ref, pData, pConfig->sizeInFrames);
        pAudioBuffer->ownsData = MA_TRUE;
    } else {
        ma_audio_buffer_ref_set_data(&pAudioBuffer->ref, pConfig->pData, pConfig->sizeInFrames);
        pAudioBuffer->ownsData = MA_FALSE;
    }

    return MA_SUCCESS;
}

static void ma_audio_buffer_uninit_ex(ma_audio_buffer* pAudioBuffer, ma_bool32 doFree)
{
    if (pAudioBuffer == NULL) {
        return;
    }

    if (pAudioBuffer->ownsData && pAudioBuffer->ref.pData != &pAudioBuffer->_pExtraData[0]) {
        ma_free((void*)pAudioBuffer->ref.pData, &pAudioBuffer->allocationCallbacks);    /* Naugty const cast, but OK in this case since we've guarded it with the ownsData check. */
    }

    if (doFree) {
        ma_free(pAudioBuffer, &pAudioBuffer->allocationCallbacks);
    }

    ma_audio_buffer_ref_uninit(&pAudioBuffer->ref);
}

MA_API ma_result ma_audio_buffer_init(const ma_audio_buffer_config* pConfig, ma_audio_buffer* pAudioBuffer)
{
    return ma_audio_buffer_init_ex(pConfig, MA_FALSE, pAudioBuffer);
}

MA_API ma_result ma_audio_buffer_init_copy(const ma_audio_buffer_config* pConfig, ma_audio_buffer* pAudioBuffer)
{
    return ma_audio_buffer_init_ex(pConfig, MA_TRUE, pAudioBuffer);
}

MA_API ma_result ma_audio_buffer_alloc_and_init(const ma_audio_buffer_config* pConfig, ma_audio_buffer** ppAudioBuffer)
{
    ma_result result;
    ma_audio_buffer* pAudioBuffer;
    ma_audio_buffer_config innerConfig; /* We'll be making some changes to the config, so need to make a copy. */
    ma_uint64 allocationSizeInBytes;

    if (ppAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    *ppAudioBuffer = NULL;  /* Safety. */

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    innerConfig = *pConfig;
    ma_allocation_callbacks_init_copy(&innerConfig.allocationCallbacks, &pConfig->allocationCallbacks);

    allocationSizeInBytes = sizeof(*pAudioBuffer) - sizeof(pAudioBuffer->_pExtraData) + (pConfig->sizeInFrames * ma_get_bytes_per_frame(pConfig->format, pConfig->channels));
    if (allocationSizeInBytes > MA_SIZE_MAX) {
        return MA_OUT_OF_MEMORY;    /* Too big. */
    }

    pAudioBuffer = (ma_audio_buffer*)ma_malloc((size_t)allocationSizeInBytes, &innerConfig.allocationCallbacks);  /* Safe cast to size_t. */
    if (pAudioBuffer == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    if (pConfig->pData != NULL) {
        ma_copy_pcm_frames(&pAudioBuffer->_pExtraData[0], pConfig->pData, pConfig->sizeInFrames, pConfig->format, pConfig->channels);
    } else {
        ma_silence_pcm_frames(&pAudioBuffer->_pExtraData[0], pConfig->sizeInFrames, pConfig->format, pConfig->channels);
    }

    innerConfig.pData = &pAudioBuffer->_pExtraData[0];

    result = ma_audio_buffer_init_ex(&innerConfig, MA_FALSE, pAudioBuffer);
    if (result != MA_SUCCESS) {
        ma_free(pAudioBuffer, &innerConfig.allocationCallbacks);
        return result;
    }

    *ppAudioBuffer = pAudioBuffer;

    return MA_SUCCESS;
}

MA_API void ma_audio_buffer_uninit(ma_audio_buffer* pAudioBuffer)
{
    ma_audio_buffer_uninit_ex(pAudioBuffer, MA_FALSE);
}

MA_API void ma_audio_buffer_uninit_and_free(ma_audio_buffer* pAudioBuffer)
{
    ma_audio_buffer_uninit_ex(pAudioBuffer, MA_TRUE);
}

MA_API ma_uint64 ma_audio_buffer_read_pcm_frames(ma_audio_buffer* pAudioBuffer, void* pFramesOut, ma_uint64 frameCount, ma_bool32 loop)
{
    if (pAudioBuffer == NULL) {
        return 0;
    }

    return ma_audio_buffer_ref_read_pcm_frames(&pAudioBuffer->ref, pFramesOut, frameCount, loop);
}

MA_API ma_result ma_audio_buffer_seek_to_pcm_frame(ma_audio_buffer* pAudioBuffer, ma_uint64 frameIndex)
{
    if (pAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_audio_buffer_ref_seek_to_pcm_frame(&pAudioBuffer->ref, frameIndex);
}

MA_API ma_result ma_audio_buffer_map(ma_audio_buffer* pAudioBuffer, void** ppFramesOut, ma_uint64* pFrameCount)
{
    if (ppFramesOut != NULL) {
        *ppFramesOut = NULL;    /* Safety. */
    }

    if (pAudioBuffer == NULL) {
        if (pFrameCount != NULL) {
            *pFrameCount = 0;
        }

        return MA_INVALID_ARGS;
    }

    return ma_audio_buffer_ref_map(&pAudioBuffer->ref, ppFramesOut, pFrameCount);
}

MA_API ma_result ma_audio_buffer_unmap(ma_audio_buffer* pAudioBuffer, ma_uint64 frameCount)
{
    if (pAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_audio_buffer_ref_unmap(&pAudioBuffer->ref, frameCount);
}

MA_API ma_bool32 ma_audio_buffer_at_end(const ma_audio_buffer* pAudioBuffer)
{
    if (pAudioBuffer == NULL) {
        return MA_FALSE;
    }

    return ma_audio_buffer_ref_at_end(&pAudioBuffer->ref);
}

MA_API ma_result ma_audio_buffer_get_cursor_in_pcm_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pCursor)
{
    if (pAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_audio_buffer_ref_get_cursor_in_pcm_frames(&pAudioBuffer->ref, pCursor);
}

MA_API ma_result ma_audio_buffer_get_length_in_pcm_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pLength)
{
    if (pAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_audio_buffer_ref_get_length_in_pcm_frames(&pAudioBuffer->ref, pLength);
}

MA_API ma_result ma_audio_buffer_get_available_frames(const ma_audio_buffer* pAudioBuffer, ma_uint64* pAvailableFrames)
{
    if (pAvailableFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    *pAvailableFrames = 0;

    if (pAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_audio_buffer_ref_get_available_frames(&pAudioBuffer->ref, pAvailableFrames);
}





MA_API ma_result ma_paged_audio_buffer_data_init(ma_format format, ma_uint32 channels, ma_paged_audio_buffer_data* pData)
{
    if (pData == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pData);

    pData->format   = format;
    pData->channels = channels;
    pData->pTail    = &pData->head;

    return MA_SUCCESS;
}

MA_API void ma_paged_audio_buffer_data_uninit(ma_paged_audio_buffer_data* pData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_paged_audio_buffer_page* pPage;

    if (pData == NULL) {
        return;
    }

    /* All pages need to be freed. */
    pPage = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pData->head.pNext);
    while (pPage != NULL) {
        ma_paged_audio_buffer_page* pNext = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pPage->pNext);

        ma_free(pPage, pAllocationCallbacks);
        pPage = pNext;
    }
}

MA_API ma_paged_audio_buffer_page* ma_paged_audio_buffer_data_get_head(ma_paged_audio_buffer_data* pData)
{
    if (pData == NULL) {
        return NULL;
    }

    return &pData->head;
}

MA_API ma_paged_audio_buffer_page* ma_paged_audio_buffer_data_get_tail(ma_paged_audio_buffer_data* pData)
{
    if (pData == NULL) {
        return NULL;
    }

    return pData->pTail;
}

MA_API ma_result ma_paged_audio_buffer_data_get_length_in_pcm_frames(ma_paged_audio_buffer_data* pData, ma_uint64* pLength)
{
    ma_paged_audio_buffer_page* pPage;

    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;

    if (pData == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Calculate the length from the linked list. */
    for (pPage = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pData->head.pNext); pPage != NULL; pPage = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pPage->pNext)) {
        *pLength += pPage->sizeInFrames;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_paged_audio_buffer_data_allocate_page(ma_paged_audio_buffer_data* pData, ma_uint64 pageSizeInFrames, const void* pInitialData, const ma_allocation_callbacks* pAllocationCallbacks, ma_paged_audio_buffer_page** ppPage)
{
    ma_paged_audio_buffer_page* pPage;
    ma_uint64 allocationSize;

    if (ppPage == NULL) {
        return MA_INVALID_ARGS;
    }

    *ppPage = NULL;

    if (pData == NULL) {
        return MA_INVALID_ARGS;
    }

    allocationSize = sizeof(*pPage) + (pageSizeInFrames * ma_get_bytes_per_frame(pData->format, pData->channels));
    if (allocationSize > MA_SIZE_MAX) {
        return MA_OUT_OF_MEMORY;    /* Too big. */
    }

    pPage = (ma_paged_audio_buffer_page*)ma_malloc((size_t)allocationSize, pAllocationCallbacks);   /* Safe cast to size_t. */
    if (pPage == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    pPage->pNext = NULL;
    pPage->sizeInFrames = pageSizeInFrames;

    if (pInitialData != NULL) {
        ma_copy_pcm_frames(pPage->pAudioData, pInitialData, pageSizeInFrames, pData->format, pData->channels);
    }

    *ppPage = pPage;

    return MA_SUCCESS;
}

MA_API ma_result ma_paged_audio_buffer_data_free_page(ma_paged_audio_buffer_data* pData, ma_paged_audio_buffer_page* pPage, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pData == NULL || pPage == NULL) {
        return MA_INVALID_ARGS;
    }

    /* It's assumed the page is not attached to the list. */
    ma_free(pPage, pAllocationCallbacks);

    return MA_SUCCESS;
}

MA_API ma_result ma_paged_audio_buffer_data_append_page(ma_paged_audio_buffer_data* pData, ma_paged_audio_buffer_page* pPage)
{
    if (pData == NULL || pPage == NULL) {
        return MA_INVALID_ARGS;
    }

    /* This function assumes the page has been filled with audio data by this point. As soon as we append, the page will be available for reading. */

    /* First thing to do is update the tail. */
    for (;;) {
        ma_paged_audio_buffer_page* pOldTail = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pData->pTail);
        ma_paged_audio_buffer_page* pNewTail = pPage;

        if (ma_atomic_compare_exchange_weak_ptr((volatile void**)&pData->pTail, (void**)&pOldTail, pNewTail)) {
            /* Here is where we append the page to the list. After this, the page is attached to the list and ready to be read from. */
            ma_atomic_exchange_ptr(&pOldTail->pNext, pPage);
            break;  /* Done. */
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_paged_audio_buffer_data_allocate_and_append_page(ma_paged_audio_buffer_data* pData, ma_uint32 pageSizeInFrames, const void* pInitialData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_result result;
    ma_paged_audio_buffer_page* pPage;

    result = ma_paged_audio_buffer_data_allocate_page(pData, pageSizeInFrames, pInitialData, pAllocationCallbacks, &pPage);
    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_paged_audio_buffer_data_append_page(pData, pPage);    /* <-- Should never fail. */
}


MA_API ma_paged_audio_buffer_config ma_paged_audio_buffer_config_init(ma_paged_audio_buffer_data* pData)
{
    ma_paged_audio_buffer_config config;

    MA_ZERO_OBJECT(&config);
    config.pData = pData;

    return config;
}


static ma_result ma_paged_audio_buffer__data_source_on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_paged_audio_buffer_read_pcm_frames((ma_paged_audio_buffer*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_paged_audio_buffer__data_source_on_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_paged_audio_buffer_seek_to_pcm_frame((ma_paged_audio_buffer*)pDataSource, frameIndex);
}

static ma_result ma_paged_audio_buffer__data_source_on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_paged_audio_buffer* pPagedAudioBuffer = (ma_paged_audio_buffer*)pDataSource;

    *pFormat     = pPagedAudioBuffer->pData->format;
    *pChannels   = pPagedAudioBuffer->pData->channels;
    *pSampleRate = 0;   /* There is no notion of a sample rate with audio buffers. */
    ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pPagedAudioBuffer->pData->channels);

    return MA_SUCCESS;
}

static ma_result ma_paged_audio_buffer__data_source_on_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_paged_audio_buffer_get_cursor_in_pcm_frames((ma_paged_audio_buffer*)pDataSource, pCursor);
}

static ma_result ma_paged_audio_buffer__data_source_on_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_paged_audio_buffer_get_length_in_pcm_frames((ma_paged_audio_buffer*)pDataSource, pLength);
}

static ma_data_source_vtable g_ma_paged_audio_buffer_data_source_vtable =
{
    ma_paged_audio_buffer__data_source_on_read,
    ma_paged_audio_buffer__data_source_on_seek,
    ma_paged_audio_buffer__data_source_on_get_data_format,
    ma_paged_audio_buffer__data_source_on_get_cursor,
    ma_paged_audio_buffer__data_source_on_get_length,
    NULL,   /* onSetLooping */
    0
};

MA_API ma_result ma_paged_audio_buffer_init(const ma_paged_audio_buffer_config* pConfig, ma_paged_audio_buffer* pPagedAudioBuffer)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    if (pPagedAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pPagedAudioBuffer);

    /* A config is required for the format and channel count. */
    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->pData == NULL) {
        return MA_INVALID_ARGS; /* No underlying data specified. */
    }

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_paged_audio_buffer_data_source_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pPagedAudioBuffer->ds);
    if (result != MA_SUCCESS) {
        return result;
    }

    pPagedAudioBuffer->pData          = pConfig->pData;
    pPagedAudioBuffer->pCurrent       = ma_paged_audio_buffer_data_get_head(pConfig->pData);
    pPagedAudioBuffer->relativeCursor = 0;
    pPagedAudioBuffer->absoluteCursor = 0;

    return MA_SUCCESS;
}

MA_API void ma_paged_audio_buffer_uninit(ma_paged_audio_buffer* pPagedAudioBuffer)
{
    if (pPagedAudioBuffer == NULL) {
        return;
    }

    /* Nothing to do. The data needs to be deleted separately. */
}

MA_API ma_result ma_paged_audio_buffer_read_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 totalFramesRead = 0;
    ma_format format;
    ma_uint32 channels;

    if (pPagedAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    format   = pPagedAudioBuffer->pData->format;
    channels = pPagedAudioBuffer->pData->channels;

    while (totalFramesRead < frameCount) {
        /* Read from the current page. The buffer should never be in a state where this is NULL. */
        ma_uint64 framesRemainingInCurrentPage;
        ma_uint64 framesRemainingToRead = frameCount - totalFramesRead;
        ma_uint64 framesToReadThisIteration;

        MA_ASSERT(pPagedAudioBuffer->pCurrent != NULL);

        framesRemainingInCurrentPage = pPagedAudioBuffer->pCurrent->sizeInFrames - pPagedAudioBuffer->relativeCursor;

        framesToReadThisIteration = ma_min(framesRemainingInCurrentPage, framesRemainingToRead);
        ma_copy_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, format, channels), ma_offset_pcm_frames_ptr(pPagedAudioBuffer->pCurrent->pAudioData, pPagedAudioBuffer->relativeCursor, format, channels), framesToReadThisIteration, format, channels);
        totalFramesRead += framesToReadThisIteration;

        pPagedAudioBuffer->absoluteCursor += framesToReadThisIteration;
        pPagedAudioBuffer->relativeCursor += framesToReadThisIteration;

        /* Move to the next page if necessary. If there's no more pages, we need to return MA_AT_END. */
        MA_ASSERT(pPagedAudioBuffer->relativeCursor <= pPagedAudioBuffer->pCurrent->sizeInFrames);

        if (pPagedAudioBuffer->relativeCursor == pPagedAudioBuffer->pCurrent->sizeInFrames) {
            /* We reached the end of the page. Need to move to the next. If there's no more pages, we're done. */
            ma_paged_audio_buffer_page* pNext = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pPagedAudioBuffer->pCurrent->pNext);
            if (pNext == NULL) {
                result = MA_AT_END;
                break;  /* We've reached the end. */
            } else {
                pPagedAudioBuffer->pCurrent       = pNext;
                pPagedAudioBuffer->relativeCursor = 0;
            }
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesRead;
    }

    return result;
}

MA_API ma_result ma_paged_audio_buffer_seek_to_pcm_frame(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64 frameIndex)
{
    if (pPagedAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    if (frameIndex == pPagedAudioBuffer->absoluteCursor) {
        return MA_SUCCESS;  /* Nothing to do. */
    }

    if (frameIndex < pPagedAudioBuffer->absoluteCursor) {
        /* Moving backwards. Need to move the cursor back to the start, and then move forward. */
        pPagedAudioBuffer->pCurrent       = ma_paged_audio_buffer_data_get_head(pPagedAudioBuffer->pData);
        pPagedAudioBuffer->absoluteCursor = 0;
        pPagedAudioBuffer->relativeCursor = 0;

        /* Fall through to the forward seeking section below. */
    }

    if (frameIndex > pPagedAudioBuffer->absoluteCursor) {
        /* Moving forward. */
        ma_paged_audio_buffer_page* pPage;
        ma_uint64 runningCursor = 0;

        for (pPage = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&ma_paged_audio_buffer_data_get_head(pPagedAudioBuffer->pData)->pNext); pPage != NULL; pPage = (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(&pPage->pNext)) {
            ma_uint64 pageRangeBeg = runningCursor;
            ma_uint64 pageRangeEnd = pageRangeBeg + pPage->sizeInFrames;

            if (frameIndex >= pageRangeBeg) {
                if (frameIndex < pageRangeEnd || (frameIndex == pageRangeEnd && pPage == (ma_paged_audio_buffer_page*)ma_atomic_load_ptr(ma_paged_audio_buffer_data_get_tail(pPagedAudioBuffer->pData)))) {  /* A small edge case - allow seeking to the very end of the buffer. */
                    /* We found the page. */
                    pPagedAudioBuffer->pCurrent       = pPage;
                    pPagedAudioBuffer->absoluteCursor = frameIndex;
                    pPagedAudioBuffer->relativeCursor = frameIndex - pageRangeBeg;
                    return MA_SUCCESS;
                }
            }

            runningCursor = pageRangeEnd;
        }

        /* Getting here means we tried seeking too far forward. Don't change any state. */
        return MA_BAD_SEEK;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_paged_audio_buffer_get_cursor_in_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;   /* Safety. */

    if (pPagedAudioBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = pPagedAudioBuffer->absoluteCursor;

    return MA_SUCCESS;
}

MA_API ma_result ma_paged_audio_buffer_get_length_in_pcm_frames(ma_paged_audio_buffer* pPagedAudioBuffer, ma_uint64* pLength)
{
    return ma_paged_audio_buffer_data_get_length_in_pcm_frames(pPagedAudioBuffer->pData, pLength);
}



/**************************************************************************************************************************************************************

VFS

**************************************************************************************************************************************************************/
MA_API ma_result ma_vfs_open(ma_vfs* pVFS, const char* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pFile == NULL) {
        return MA_INVALID_ARGS;
    }

    *pFile = NULL;

    if (pVFS == NULL || pFilePath == NULL || openMode == 0) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onOpen == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onOpen(pVFS, pFilePath, openMode, pFile);
}

MA_API ma_result ma_vfs_open_w(ma_vfs* pVFS, const wchar_t* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pFile == NULL) {
        return MA_INVALID_ARGS;
    }

    *pFile = NULL;

    if (pVFS == NULL || pFilePath == NULL || openMode == 0) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onOpenW == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onOpenW(pVFS, pFilePath, openMode, pFile);
}

MA_API ma_result ma_vfs_close(ma_vfs* pVFS, ma_vfs_file file)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pVFS == NULL || file == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onClose == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onClose(pVFS, file);
}

MA_API ma_result ma_vfs_read(ma_vfs* pVFS, ma_vfs_file file, void* pDst, size_t sizeInBytes, size_t* pBytesRead)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;
    ma_result result;
    size_t bytesRead = 0;

    if (pBytesRead != NULL) {
        *pBytesRead = 0;
    }

    if (pVFS == NULL || file == NULL || pDst == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onRead == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    result = pCallbacks->onRead(pVFS, file, pDst, sizeInBytes, &bytesRead);

    if (pBytesRead != NULL) {
        *pBytesRead = bytesRead;
    }

    if (result == MA_SUCCESS && bytesRead == 0 && sizeInBytes > 0) {
        result  = MA_AT_END;
    }

    return result;
}

MA_API ma_result ma_vfs_write(ma_vfs* pVFS, ma_vfs_file file, const void* pSrc, size_t sizeInBytes, size_t* pBytesWritten)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pBytesWritten != NULL) {
        *pBytesWritten = 0;
    }

    if (pVFS == NULL || file == NULL || pSrc == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onWrite == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onWrite(pVFS, file, pSrc, sizeInBytes, pBytesWritten);
}

MA_API ma_result ma_vfs_seek(ma_vfs* pVFS, ma_vfs_file file, ma_int64 offset, ma_seek_origin origin)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pVFS == NULL || file == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onSeek == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onSeek(pVFS, file, offset, origin);
}

MA_API ma_result ma_vfs_tell(ma_vfs* pVFS, ma_vfs_file file, ma_int64* pCursor)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    if (pVFS == NULL || file == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onTell == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onTell(pVFS, file, pCursor);
}

MA_API ma_result ma_vfs_info(ma_vfs* pVFS, ma_vfs_file file, ma_file_info* pInfo)
{
    ma_vfs_callbacks* pCallbacks = (ma_vfs_callbacks*)pVFS;

    if (pInfo == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pInfo);

    if (pVFS == NULL || file == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pCallbacks->onInfo == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pCallbacks->onInfo(pVFS, file, pInfo);
}


#if !defined(MA_USE_WIN32_FILEIO) && (defined(MA_WIN32) && defined(MA_WIN32_DESKTOP) && !defined(MA_NO_WIN32_FILEIO) && !defined(MA_POSIX))
    #define MA_USE_WIN32_FILEIO
#endif

#if defined(MA_USE_WIN32_FILEIO)
/*
We need to dynamically load SetFilePointer or SetFilePointerEx because older versions of Windows do
not have the Ex version. We therefore need to do some dynamic branching depending on what's available.

We load these when we load our first file from the default VFS. It's left open for the life of the
program and is left to the OS to uninitialize when the program terminates.
*/
typedef DWORD (__stdcall * ma_SetFilePointer_proc)(HANDLE hFile, LONG lDistanceToMove, LONG* lpDistanceToMoveHigh, DWORD dwMoveMethod);
typedef BOOL  (__stdcall * ma_SetFilePointerEx_proc)(HANDLE hFile, LARGE_INTEGER liDistanceToMove, LARGE_INTEGER* lpNewFilePointer, DWORD dwMoveMethod);

static ma_handle hKernel32DLL = NULL;
static ma_SetFilePointer_proc   ma_SetFilePointer   = NULL;
static ma_SetFilePointerEx_proc ma_SetFilePointerEx = NULL;

static void ma_win32_fileio_init(void)
{
    if (hKernel32DLL == NULL) {
        hKernel32DLL = ma_dlopen(NULL, "kernel32.dll");
        if (hKernel32DLL != NULL) {
            ma_SetFilePointer   = (ma_SetFilePointer_proc)  ma_dlsym(NULL, hKernel32DLL, "SetFilePointer");
            ma_SetFilePointerEx = (ma_SetFilePointerEx_proc)ma_dlsym(NULL, hKernel32DLL, "SetFilePointerEx");
        }
    }
}

static void ma_default_vfs__get_open_settings_win32(ma_uint32 openMode, DWORD* pDesiredAccess, DWORD* pShareMode, DWORD* pCreationDisposition)
{
    *pDesiredAccess = 0;
    if ((openMode & MA_OPEN_MODE_READ) != 0) {
        *pDesiredAccess |= GENERIC_READ;
    }
    if ((openMode & MA_OPEN_MODE_WRITE) != 0) {
        *pDesiredAccess |= GENERIC_WRITE;
    }

    *pShareMode = 0;
    if ((openMode & MA_OPEN_MODE_READ) != 0) {
        *pShareMode |= FILE_SHARE_READ;
    }

    if ((openMode & MA_OPEN_MODE_WRITE) != 0) {
        *pCreationDisposition = CREATE_ALWAYS;  /* Opening in write mode. Truncate. */
    } else {
        *pCreationDisposition = OPEN_EXISTING;  /* Opening in read mode. File must exist. */
    }
}

static ma_result ma_default_vfs_open__win32(ma_vfs* pVFS, const char* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    HANDLE hFile;
    DWORD dwDesiredAccess;
    DWORD dwShareMode;
    DWORD dwCreationDisposition;

    (void)pVFS;

    /* Load some Win32 symbols dynamically so we can dynamically check for the existence of SetFilePointerEx. */
    ma_win32_fileio_init();

    ma_default_vfs__get_open_settings_win32(openMode, &dwDesiredAccess, &dwShareMode, &dwCreationDisposition);

    hFile = CreateFileA(pFilePath, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile == INVALID_HANDLE_VALUE) {
        return ma_result_from_GetLastError(GetLastError());
    }

    *pFile = hFile;
    return MA_SUCCESS;
}

static ma_result ma_default_vfs_open_w__win32(ma_vfs* pVFS, const wchar_t* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    HANDLE hFile;
    DWORD dwDesiredAccess;
    DWORD dwShareMode;
    DWORD dwCreationDisposition;

    (void)pVFS;

    /* Load some Win32 symbols dynamically so we can dynamically check for the existence of SetFilePointerEx. */
    ma_win32_fileio_init();

    ma_default_vfs__get_open_settings_win32(openMode, &dwDesiredAccess, &dwShareMode, &dwCreationDisposition);

    hFile = CreateFileW(pFilePath, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile == INVALID_HANDLE_VALUE) {
        return ma_result_from_GetLastError(GetLastError());
    }

    *pFile = hFile;
    return MA_SUCCESS;
}

static ma_result ma_default_vfs_close__win32(ma_vfs* pVFS, ma_vfs_file file)
{
    (void)pVFS;

    if (CloseHandle((HANDLE)file) == 0) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}


static ma_result ma_default_vfs_read__win32(ma_vfs* pVFS, ma_vfs_file file, void* pDst, size_t sizeInBytes, size_t* pBytesRead)
{
    ma_result result = MA_SUCCESS;
    size_t totalBytesRead;

    (void)pVFS;

    totalBytesRead = 0;
    while (totalBytesRead < sizeInBytes) {
        size_t bytesRemaining;
        DWORD bytesToRead;
        DWORD bytesRead;
        BOOL readResult;

        bytesRemaining = sizeInBytes - totalBytesRead;
        if (bytesRemaining >= 0xFFFFFFFF) {
            bytesToRead = 0xFFFFFFFF;
        } else {
            bytesToRead = (DWORD)bytesRemaining;
        }

        readResult = ReadFile((HANDLE)file, ma_offset_ptr(pDst, totalBytesRead), bytesToRead, &bytesRead, NULL);
        if (readResult == 1 && bytesRead == 0) {
            result = MA_AT_END;
            break;  /* EOF */
        }

        totalBytesRead += bytesRead;

        if (bytesRead < bytesToRead) {
            break;  /* EOF */
        }

        if (readResult == 0) {
            result = ma_result_from_GetLastError(GetLastError());
            break;
        }
    }

    if (pBytesRead != NULL) {
        *pBytesRead = totalBytesRead;
    }

    return result;
}

static ma_result ma_default_vfs_write__win32(ma_vfs* pVFS, ma_vfs_file file, const void* pSrc, size_t sizeInBytes, size_t* pBytesWritten)
{
    ma_result result = MA_SUCCESS;
    size_t totalBytesWritten;

    (void)pVFS;

    totalBytesWritten = 0;
    while (totalBytesWritten < sizeInBytes) {
        size_t bytesRemaining;
        DWORD bytesToWrite;
        DWORD bytesWritten;
        BOOL writeResult;

        bytesRemaining = sizeInBytes - totalBytesWritten;
        if (bytesRemaining >= 0xFFFFFFFF) {
            bytesToWrite = 0xFFFFFFFF;
        } else {
            bytesToWrite = (DWORD)bytesRemaining;
        }

        writeResult = WriteFile((HANDLE)file, ma_offset_ptr(pSrc, totalBytesWritten), bytesToWrite, &bytesWritten, NULL);
        totalBytesWritten += bytesWritten;

        if (writeResult == 0) {
            result = ma_result_from_GetLastError(GetLastError());
            break;
        }
    }

    if (pBytesWritten != NULL) {
        *pBytesWritten = totalBytesWritten;
    }

    return result;
}


static ma_result ma_default_vfs_seek__win32(ma_vfs* pVFS, ma_vfs_file file, ma_int64 offset, ma_seek_origin origin)
{
    LARGE_INTEGER liDistanceToMove;
    DWORD dwMoveMethod;
    BOOL result;

    (void)pVFS;

    liDistanceToMove.QuadPart = offset;

    /*  */ if (origin == ma_seek_origin_current) {
        dwMoveMethod = FILE_CURRENT;
    } else if (origin == ma_seek_origin_end) {
        dwMoveMethod = FILE_END;
    } else {
        dwMoveMethod = FILE_BEGIN;
    }

    if (ma_SetFilePointerEx != NULL) {
        result = ma_SetFilePointerEx((HANDLE)file, liDistanceToMove, NULL, dwMoveMethod);
    } else if (ma_SetFilePointer != NULL) {
        /* No SetFilePointerEx() so restrict to 31 bits. */
        if (offset > 0x7FFFFFFF) {
            return MA_OUT_OF_RANGE;
        }

        result = ma_SetFilePointer((HANDLE)file, (LONG)liDistanceToMove.QuadPart, NULL, dwMoveMethod);
    } else {
        return MA_NOT_IMPLEMENTED;
    }

    if (result == 0) {
        return ma_result_from_GetLastError(GetLastError());
    }

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_tell__win32(ma_vfs* pVFS, ma_vfs_file file, ma_int64* pCursor)
{
    LARGE_INTEGER liZero;
    LARGE_INTEGER liTell;
    BOOL result;

    (void)pVFS;

    liZero.QuadPart = 0;

    if (ma_SetFilePointerEx != NULL) {
        result = ma_SetFilePointerEx((HANDLE)file, liZero, &liTell, FILE_CURRENT);
    } else if (ma_SetFilePointer != NULL) {
        LONG tell;

        result = ma_SetFilePointer((HANDLE)file, (LONG)liZero.QuadPart, &tell, FILE_CURRENT);
        liTell.QuadPart = tell;
    } else {
        return MA_NOT_IMPLEMENTED;
    }

    if (result == 0) {
        return ma_result_from_GetLastError(GetLastError());
    }

    if (pCursor != NULL) {
        *pCursor = liTell.QuadPart;
    }

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_info__win32(ma_vfs* pVFS, ma_vfs_file file, ma_file_info* pInfo)
{
    BY_HANDLE_FILE_INFORMATION fi;
    BOOL result;

    (void)pVFS;

    result = GetFileInformationByHandle((HANDLE)file, &fi);
    if (result == 0) {
        return ma_result_from_GetLastError(GetLastError());
    }

    pInfo->sizeInBytes = ((ma_uint64)fi.nFileSizeHigh << 32) | ((ma_uint64)fi.nFileSizeLow);

    return MA_SUCCESS;
}
#else
static ma_result ma_default_vfs_open__stdio(ma_vfs* pVFS, const char* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    ma_result result;
    FILE* pFileStd;
    const char* pOpenModeStr;

    MA_ASSERT(pFilePath != NULL);
    MA_ASSERT(openMode  != 0);
    MA_ASSERT(pFile     != NULL);

    (void)pVFS;

    if ((openMode & MA_OPEN_MODE_READ) != 0) {
        if ((openMode & MA_OPEN_MODE_WRITE) != 0) {
            pOpenModeStr = "r+";
        } else {
            pOpenModeStr = "rb";
        }
    } else {
        pOpenModeStr = "wb";
    }

    result = ma_fopen(&pFileStd, pFilePath, pOpenModeStr);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pFile = pFileStd;

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_open_w__stdio(ma_vfs* pVFS, const wchar_t* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    ma_result result;
    FILE* pFileStd;
    const wchar_t* pOpenModeStr;

    MA_ASSERT(pFilePath != NULL);
    MA_ASSERT(openMode  != 0);
    MA_ASSERT(pFile     != NULL);

    (void)pVFS;

    if ((openMode & MA_OPEN_MODE_READ) != 0) {
        if ((openMode & MA_OPEN_MODE_WRITE) != 0) {
            pOpenModeStr = L"r+";
        } else {
            pOpenModeStr = L"rb";
        }
    } else {
        pOpenModeStr = L"wb";
    }

    result = ma_wfopen(&pFileStd, pFilePath, pOpenModeStr, (pVFS != NULL) ? &((ma_default_vfs*)pVFS)->allocationCallbacks : NULL);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pFile = pFileStd;

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_close__stdio(ma_vfs* pVFS, ma_vfs_file file)
{
    MA_ASSERT(file != NULL);

    (void)pVFS;

    fclose((FILE*)file);

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_read__stdio(ma_vfs* pVFS, ma_vfs_file file, void* pDst, size_t sizeInBytes, size_t* pBytesRead)
{
    size_t result;

    MA_ASSERT(file != NULL);
    MA_ASSERT(pDst != NULL);

    (void)pVFS;

    result = fread(pDst, 1, sizeInBytes, (FILE*)file);

    if (pBytesRead != NULL) {
        *pBytesRead = result;
    }

    if (result != sizeInBytes) {
        if (result == 0 && feof((FILE*)file)) {
            return MA_AT_END;
        } else {
            return ma_result_from_errno(ferror((FILE*)file));
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_write__stdio(ma_vfs* pVFS, ma_vfs_file file, const void* pSrc, size_t sizeInBytes, size_t* pBytesWritten)
{
    size_t result;

    MA_ASSERT(file != NULL);
    MA_ASSERT(pSrc != NULL);

    (void)pVFS;

    result = fwrite(pSrc, 1, sizeInBytes, (FILE*)file);

    if (pBytesWritten != NULL) {
        *pBytesWritten = result;
    }

    if (result != sizeInBytes) {
        return ma_result_from_errno(ferror((FILE*)file));
    }

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_seek__stdio(ma_vfs* pVFS, ma_vfs_file file, ma_int64 offset, ma_seek_origin origin)
{
    int result;
    int whence;

    MA_ASSERT(file != NULL);

    (void)pVFS;

    if (origin == ma_seek_origin_start) {
        whence = SEEK_SET;
    } else if (origin == ma_seek_origin_end) {
        whence = SEEK_END;
    } else {
        whence = SEEK_CUR;
    }

#if defined(_WIN32)
    #if defined(_MSC_VER) && _MSC_VER > 1200
        result = _fseeki64((FILE*)file, offset, whence);
    #else
        /* No _fseeki64() so restrict to 31 bits. */
        if (offset > 0x7FFFFFFF) {
            return MA_OUT_OF_RANGE;
        }

        result = fseek((FILE*)file, (int)offset, whence);
    #endif
#else
    result = fseek((FILE*)file, (long int)offset, whence);
#endif
    if (result != 0) {
        return MA_ERROR;
    }

    return MA_SUCCESS;
}

static ma_result ma_default_vfs_tell__stdio(ma_vfs* pVFS, ma_vfs_file file, ma_int64* pCursor)
{
    ma_int64 result;

    MA_ASSERT(file    != NULL);
    MA_ASSERT(pCursor != NULL);

    (void)pVFS;

#if defined(_WIN32)
    #if defined(_MSC_VER) && _MSC_VER > 1200
        result = _ftelli64((FILE*)file);
    #else
        result = ftell((FILE*)file);
    #endif
#else
    result = ftell((FILE*)file);
#endif

    *pCursor = result;

    return MA_SUCCESS;
}

#if !defined(_MSC_VER) && !((defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 1) || defined(_XOPEN_SOURCE) || defined(_POSIX_SOURCE)) && !defined(MA_BSD)
int fileno(FILE *stream);
#endif

static ma_result ma_default_vfs_info__stdio(ma_vfs* pVFS, ma_vfs_file file, ma_file_info* pInfo)
{
    int fd;
    struct stat info;

    MA_ASSERT(file  != NULL);
    MA_ASSERT(pInfo != NULL);

    (void)pVFS;

#if defined(_MSC_VER)
    fd = _fileno((FILE*)file);
#else
    fd =  fileno((FILE*)file);
#endif

    if (fstat(fd, &info) != 0) {
        return ma_result_from_errno(errno);
    }

    pInfo->sizeInBytes = info.st_size;

    return MA_SUCCESS;
}
#endif


static ma_result ma_default_vfs_open(ma_vfs* pVFS, const char* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    if (pFile == NULL) {
        return MA_INVALID_ARGS;
    }

    *pFile = NULL;

    if (pFilePath == NULL || openMode == 0) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_open__win32(pVFS, pFilePath, openMode, pFile);
#else
    return ma_default_vfs_open__stdio(pVFS, pFilePath, openMode, pFile);
#endif
}

static ma_result ma_default_vfs_open_w(ma_vfs* pVFS, const wchar_t* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    if (pFile == NULL) {
        return MA_INVALID_ARGS;
    }

    *pFile = NULL;

    if (pFilePath == NULL || openMode == 0) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_open_w__win32(pVFS, pFilePath, openMode, pFile);
#else
    return ma_default_vfs_open_w__stdio(pVFS, pFilePath, openMode, pFile);
#endif
}

static ma_result ma_default_vfs_close(ma_vfs* pVFS, ma_vfs_file file)
{
    if (file == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_close__win32(pVFS, file);
#else
    return ma_default_vfs_close__stdio(pVFS, file);
#endif
}

static ma_result ma_default_vfs_read(ma_vfs* pVFS, ma_vfs_file file, void* pDst, size_t sizeInBytes, size_t* pBytesRead)
{
    if (pBytesRead != NULL) {
        *pBytesRead = 0;
    }

    if (file == NULL || pDst == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_read__win32(pVFS, file, pDst, sizeInBytes, pBytesRead);
#else
    return ma_default_vfs_read__stdio(pVFS, file, pDst, sizeInBytes, pBytesRead);
#endif
}

static ma_result ma_default_vfs_write(ma_vfs* pVFS, ma_vfs_file file, const void* pSrc, size_t sizeInBytes, size_t* pBytesWritten)
{
    if (pBytesWritten != NULL) {
        *pBytesWritten = 0;
    }

    if (file == NULL || pSrc == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_write__win32(pVFS, file, pSrc, sizeInBytes, pBytesWritten);
#else
    return ma_default_vfs_write__stdio(pVFS, file, pSrc, sizeInBytes, pBytesWritten);
#endif
}

static ma_result ma_default_vfs_seek(ma_vfs* pVFS, ma_vfs_file file, ma_int64 offset, ma_seek_origin origin)
{
    if (file == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_seek__win32(pVFS, file, offset, origin);
#else
    return ma_default_vfs_seek__stdio(pVFS, file, offset, origin);
#endif
}

static ma_result ma_default_vfs_tell(ma_vfs* pVFS, ma_vfs_file file, ma_int64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    if (file == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_tell__win32(pVFS, file, pCursor);
#else
    return ma_default_vfs_tell__stdio(pVFS, file, pCursor);
#endif
}

static ma_result ma_default_vfs_info(ma_vfs* pVFS, ma_vfs_file file, ma_file_info* pInfo)
{
    if (pInfo == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pInfo);

    if (file == NULL) {
        return MA_INVALID_ARGS;
    }

#if defined(MA_USE_WIN32_FILEIO)
    return ma_default_vfs_info__win32(pVFS, file, pInfo);
#else
    return ma_default_vfs_info__stdio(pVFS, file, pInfo);
#endif
}


MA_API ma_result ma_default_vfs_init(ma_default_vfs* pVFS, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pVFS == NULL) {
        return MA_INVALID_ARGS;
    }

    pVFS->cb.onOpen  = ma_default_vfs_open;
    pVFS->cb.onOpenW = ma_default_vfs_open_w;
    pVFS->cb.onClose = ma_default_vfs_close;
    pVFS->cb.onRead  = ma_default_vfs_read;
    pVFS->cb.onWrite = ma_default_vfs_write;
    pVFS->cb.onSeek  = ma_default_vfs_seek;
    pVFS->cb.onTell  = ma_default_vfs_tell;
    pVFS->cb.onInfo  = ma_default_vfs_info;
    ma_allocation_callbacks_init_copy(&pVFS->allocationCallbacks, pAllocationCallbacks);

    return MA_SUCCESS;
}


MA_API ma_result ma_vfs_or_default_open(ma_vfs* pVFS, const char* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    if (pVFS != NULL) {
        return ma_vfs_open(pVFS, pFilePath, openMode, pFile);
    } else {
        return ma_default_vfs_open(pVFS, pFilePath, openMode, pFile);
    }
}

MA_API ma_result ma_vfs_or_default_open_w(ma_vfs* pVFS, const wchar_t* pFilePath, ma_uint32 openMode, ma_vfs_file* pFile)
{
    if (pVFS != NULL) {
        return ma_vfs_open_w(pVFS, pFilePath, openMode, pFile);
    } else {
        return ma_default_vfs_open_w(pVFS, pFilePath, openMode, pFile);
    }
}

MA_API ma_result ma_vfs_or_default_close(ma_vfs* pVFS, ma_vfs_file file)
{
    if (pVFS != NULL) {
        return ma_vfs_close(pVFS, file);
    } else {
        return ma_default_vfs_close(pVFS, file);
    }
}

MA_API ma_result ma_vfs_or_default_read(ma_vfs* pVFS, ma_vfs_file file, void* pDst, size_t sizeInBytes, size_t* pBytesRead)
{
    if (pVFS != NULL) {
        return ma_vfs_read(pVFS, file, pDst, sizeInBytes, pBytesRead);
    } else {
        return ma_default_vfs_read(pVFS, file, pDst, sizeInBytes, pBytesRead);
    }
}

MA_API ma_result ma_vfs_or_default_write(ma_vfs* pVFS, ma_vfs_file file, const void* pSrc, size_t sizeInBytes, size_t* pBytesWritten)
{
    if (pVFS != NULL) {
        return ma_vfs_write(pVFS, file, pSrc, sizeInBytes, pBytesWritten);
    } else {
        return ma_default_vfs_write(pVFS, file, pSrc, sizeInBytes, pBytesWritten);
    }
}

MA_API ma_result ma_vfs_or_default_seek(ma_vfs* pVFS, ma_vfs_file file, ma_int64 offset, ma_seek_origin origin)
{
    if (pVFS != NULL) {
        return ma_vfs_seek(pVFS, file, offset, origin);
    } else {
        return ma_default_vfs_seek(pVFS, file, offset, origin);
    }
}

MA_API ma_result ma_vfs_or_default_tell(ma_vfs* pVFS, ma_vfs_file file, ma_int64* pCursor)
{
    if (pVFS != NULL) {
        return ma_vfs_tell(pVFS, file, pCursor);
    } else {
        return ma_default_vfs_tell(pVFS, file, pCursor);
    }
}

MA_API ma_result ma_vfs_or_default_info(ma_vfs* pVFS, ma_vfs_file file, ma_file_info* pInfo)
{
    if (pVFS != NULL) {
        return ma_vfs_info(pVFS, file, pInfo);
    } else {
        return ma_default_vfs_info(pVFS, file, pInfo);
    }
}



static ma_result ma_vfs_open_and_read_file_ex(ma_vfs* pVFS, const char* pFilePath, const wchar_t* pFilePathW, void** ppData, size_t* pSize, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_result result;
    ma_vfs_file file;
    ma_file_info info;
    void* pData;
    size_t bytesRead;

    if (ppData != NULL) {
        *ppData = NULL;
    }
    if (pSize != NULL) {
        *pSize = 0;
    }

    if (ppData == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFilePath != NULL) {
        result = ma_vfs_or_default_open(pVFS, pFilePath, MA_OPEN_MODE_READ, &file);
    } else {
        result = ma_vfs_or_default_open_w(pVFS, pFilePathW, MA_OPEN_MODE_READ, &file);
    }
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_vfs_or_default_info(pVFS, file, &info);
    if (result != MA_SUCCESS) {
        ma_vfs_or_default_close(pVFS, file);
        return result;
    }

    if (info.sizeInBytes > MA_SIZE_MAX) {
        ma_vfs_or_default_close(pVFS, file);
        return MA_TOO_BIG;
    }

    pData = ma_malloc((size_t)info.sizeInBytes, pAllocationCallbacks);  /* Safe cast. */
    if (pData == NULL) {
        ma_vfs_or_default_close(pVFS, file);
        return result;
    }

    result = ma_vfs_or_default_read(pVFS, file, pData, (size_t)info.sizeInBytes, &bytesRead);  /* Safe cast. */
    ma_vfs_or_default_close(pVFS, file);

    if (result != MA_SUCCESS) {
        ma_free(pData, pAllocationCallbacks);
        return result;
    }

    if (pSize != NULL) {
        *pSize = bytesRead;
    }

    MA_ASSERT(ppData != NULL);
    *ppData = pData;

    return MA_SUCCESS;
}

MA_API ma_result ma_vfs_open_and_read_file(ma_vfs* pVFS, const char* pFilePath, void** ppData, size_t* pSize, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_vfs_open_and_read_file_ex(pVFS, pFilePath, NULL, ppData, pSize, pAllocationCallbacks);
}

MA_API ma_result ma_vfs_open_and_read_file_w(ma_vfs* pVFS, const wchar_t* pFilePath, void** ppData, size_t* pSize, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_vfs_open_and_read_file_ex(pVFS, NULL, pFilePath, ppData, pSize, pAllocationCallbacks);
}



/**************************************************************************************************************************************************************

Decoding and Encoding Headers. These are auto-generated from a tool.

**************************************************************************************************************************************************************/
#if !defined(MA_NO_WAV) && (!defined(MA_NO_DECODING) || !defined(MA_NO_ENCODING))
/* dr_wav_h begin */
#ifndef ma_dr_wav_h
#define ma_dr_wav_h
#ifdef __cplusplus
extern "C" {
#endif
#define MA_DR_WAV_STRINGIFY(x)      #x
#define MA_DR_WAV_XSTRINGIFY(x)     MA_DR_WAV_STRINGIFY(x)
#define MA_DR_WAV_VERSION_MAJOR     0
#define MA_DR_WAV_VERSION_MINOR     13
#define MA_DR_WAV_VERSION_REVISION  18
#define MA_DR_WAV_VERSION_STRING    MA_DR_WAV_XSTRINGIFY(MA_DR_WAV_VERSION_MAJOR) "." MA_DR_WAV_XSTRINGIFY(MA_DR_WAV_VERSION_MINOR) "." MA_DR_WAV_XSTRINGIFY(MA_DR_WAV_VERSION_REVISION)
#include <stddef.h>
#define MA_DR_WAVE_FORMAT_PCM          0x1
#define MA_DR_WAVE_FORMAT_ADPCM        0x2
#define MA_DR_WAVE_FORMAT_IEEE_FLOAT   0x3
#define MA_DR_WAVE_FORMAT_ALAW         0x6
#define MA_DR_WAVE_FORMAT_MULAW        0x7
#define MA_DR_WAVE_FORMAT_DVI_ADPCM    0x11
#define MA_DR_WAVE_FORMAT_EXTENSIBLE   0xFFFE
#define MA_DR_WAV_SEQUENTIAL            0x00000001
#define MA_DR_WAV_WITH_METADATA         0x00000002
MA_API void ma_dr_wav_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision);
MA_API const char* ma_dr_wav_version_string(void);
typedef enum
{
    ma_dr_wav_seek_origin_start,
    ma_dr_wav_seek_origin_current
} ma_dr_wav_seek_origin;
typedef enum
{
    ma_dr_wav_container_riff,
    ma_dr_wav_container_rifx,
    ma_dr_wav_container_w64,
    ma_dr_wav_container_rf64,
    ma_dr_wav_container_aiff
} ma_dr_wav_container;
typedef struct
{
    union
    {
        ma_uint8 fourcc[4];
        ma_uint8 guid[16];
    } id;
    ma_uint64 sizeInBytes;
    unsigned int paddingSize;
} ma_dr_wav_chunk_header;
typedef struct
{
    ma_uint16 formatTag;
    ma_uint16 channels;
    ma_uint32 sampleRate;
    ma_uint32 avgBytesPerSec;
    ma_uint16 blockAlign;
    ma_uint16 bitsPerSample;
    ma_uint16 extendedSize;
    ma_uint16 validBitsPerSample;
    ma_uint32 channelMask;
    ma_uint8 subFormat[16];
} ma_dr_wav_fmt;
MA_API ma_uint16 ma_dr_wav_fmt_get_format(const ma_dr_wav_fmt* pFMT);
typedef size_t (* ma_dr_wav_read_proc)(void* pUserData, void* pBufferOut, size_t bytesToRead);
typedef size_t (* ma_dr_wav_write_proc)(void* pUserData, const void* pData, size_t bytesToWrite);
typedef ma_bool32 (* ma_dr_wav_seek_proc)(void* pUserData, int offset, ma_dr_wav_seek_origin origin);
typedef ma_uint64 (* ma_dr_wav_chunk_proc)(void* pChunkUserData, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pReadSeekUserData, const ma_dr_wav_chunk_header* pChunkHeader, ma_dr_wav_container container, const ma_dr_wav_fmt* pFMT);
typedef struct
{
    const ma_uint8* data;
    size_t dataSize;
    size_t currentReadPos;
} ma_dr_wav__memory_stream;
typedef struct
{
    void** ppData;
    size_t* pDataSize;
    size_t dataSize;
    size_t dataCapacity;
    size_t currentWritePos;
} ma_dr_wav__memory_stream_write;
typedef struct
{
    ma_dr_wav_container container;
    ma_uint32 format;
    ma_uint32 channels;
    ma_uint32 sampleRate;
    ma_uint32 bitsPerSample;
} ma_dr_wav_data_format;
typedef enum
{
    ma_dr_wav_metadata_type_none                        = 0,
    ma_dr_wav_metadata_type_unknown                     = 1 << 0,
    ma_dr_wav_metadata_type_smpl                        = 1 << 1,
    ma_dr_wav_metadata_type_inst                        = 1 << 2,
    ma_dr_wav_metadata_type_cue                         = 1 << 3,
    ma_dr_wav_metadata_type_acid                        = 1 << 4,
    ma_dr_wav_metadata_type_bext                        = 1 << 5,
    ma_dr_wav_metadata_type_list_label                  = 1 << 6,
    ma_dr_wav_metadata_type_list_note                   = 1 << 7,
    ma_dr_wav_metadata_type_list_labelled_cue_region    = 1 << 8,
    ma_dr_wav_metadata_type_list_info_software          = 1 << 9,
    ma_dr_wav_metadata_type_list_info_copyright         = 1 << 10,
    ma_dr_wav_metadata_type_list_info_title             = 1 << 11,
    ma_dr_wav_metadata_type_list_info_artist            = 1 << 12,
    ma_dr_wav_metadata_type_list_info_comment           = 1 << 13,
    ma_dr_wav_metadata_type_list_info_date              = 1 << 14,
    ma_dr_wav_metadata_type_list_info_genre             = 1 << 15,
    ma_dr_wav_metadata_type_list_info_album             = 1 << 16,
    ma_dr_wav_metadata_type_list_info_tracknumber       = 1 << 17,
    ma_dr_wav_metadata_type_list_all_info_strings       = ma_dr_wav_metadata_type_list_info_software
                                                    | ma_dr_wav_metadata_type_list_info_copyright
                                                    | ma_dr_wav_metadata_type_list_info_title
                                                    | ma_dr_wav_metadata_type_list_info_artist
                                                    | ma_dr_wav_metadata_type_list_info_comment
                                                    | ma_dr_wav_metadata_type_list_info_date
                                                    | ma_dr_wav_metadata_type_list_info_genre
                                                    | ma_dr_wav_metadata_type_list_info_album
                                                    | ma_dr_wav_metadata_type_list_info_tracknumber,
    ma_dr_wav_metadata_type_list_all_adtl               = ma_dr_wav_metadata_type_list_label
                                                    | ma_dr_wav_metadata_type_list_note
                                                    | ma_dr_wav_metadata_type_list_labelled_cue_region,
    ma_dr_wav_metadata_type_all                         = -2,
    ma_dr_wav_metadata_type_all_including_unknown       = -1
} ma_dr_wav_metadata_type;
typedef enum
{
    ma_dr_wav_smpl_loop_type_forward  = 0,
    ma_dr_wav_smpl_loop_type_pingpong = 1,
    ma_dr_wav_smpl_loop_type_backward = 2
} ma_dr_wav_smpl_loop_type;
typedef struct
{
    ma_uint32 cuePointId;
    ma_uint32 type;
    ma_uint32 firstSampleByteOffset;
    ma_uint32 lastSampleByteOffset;
    ma_uint32 sampleFraction;
    ma_uint32 playCount;
} ma_dr_wav_smpl_loop;
typedef struct
{
    ma_uint32 manufacturerId;
    ma_uint32 productId;
    ma_uint32 samplePeriodNanoseconds;
    ma_uint32 midiUnityNote;
    ma_uint32 midiPitchFraction;
    ma_uint32 smpteFormat;
    ma_uint32 smpteOffset;
    ma_uint32 sampleLoopCount;
    ma_uint32 samplerSpecificDataSizeInBytes;
    ma_dr_wav_smpl_loop* pLoops;
    ma_uint8* pSamplerSpecificData;
} ma_dr_wav_smpl;
typedef struct
{
    ma_int8 midiUnityNote;
    ma_int8 fineTuneCents;
    ma_int8 gainDecibels;
    ma_int8 lowNote;
    ma_int8 highNote;
    ma_int8 lowVelocity;
    ma_int8 highVelocity;
} ma_dr_wav_inst;
typedef struct
{
    ma_uint32 id;
    ma_uint32 playOrderPosition;
    ma_uint8 dataChunkId[4];
    ma_uint32 chunkStart;
    ma_uint32 blockStart;
    ma_uint32 sampleByteOffset;
} ma_dr_wav_cue_point;
typedef struct
{
    ma_uint32 cuePointCount;
    ma_dr_wav_cue_point *pCuePoints;
} ma_dr_wav_cue;
typedef enum
{
    ma_dr_wav_acid_flag_one_shot      = 1,
    ma_dr_wav_acid_flag_root_note_set = 2,
    ma_dr_wav_acid_flag_stretch       = 4,
    ma_dr_wav_acid_flag_disk_based    = 8,
    ma_dr_wav_acid_flag_acidizer      = 16
} ma_dr_wav_acid_flag;
typedef struct
{
    ma_uint32 flags;
    ma_uint16 midiUnityNote;
    ma_uint16 reserved1;
    float reserved2;
    ma_uint32 numBeats;
    ma_uint16 meterDenominator;
    ma_uint16 meterNumerator;
    float tempo;
} ma_dr_wav_acid;
typedef struct
{
    ma_uint32 cuePointId;
    ma_uint32 stringLength;
    char* pString;
} ma_dr_wav_list_label_or_note;
typedef struct
{
    char* pDescription;
    char* pOriginatorName;
    char* pOriginatorReference;
    char  pOriginationDate[10];
    char  pOriginationTime[8];
    ma_uint64 timeReference;
    ma_uint16 version;
    char* pCodingHistory;
    ma_uint32 codingHistorySize;
    ma_uint8* pUMID;
    ma_uint16 loudnessValue;
    ma_uint16 loudnessRange;
    ma_uint16 maxTruePeakLevel;
    ma_uint16 maxMomentaryLoudness;
    ma_uint16 maxShortTermLoudness;
} ma_dr_wav_bext;
typedef struct
{
    ma_uint32 stringLength;
    char* pString;
} ma_dr_wav_list_info_text;
typedef struct
{
    ma_uint32 cuePointId;
    ma_uint32 sampleLength;
    ma_uint8 purposeId[4];
    ma_uint16 country;
    ma_uint16 language;
    ma_uint16 dialect;
    ma_uint16 codePage;
    ma_uint32 stringLength;
    char* pString;
} ma_dr_wav_list_labelled_cue_region;
typedef enum
{
    ma_dr_wav_metadata_location_invalid,
    ma_dr_wav_metadata_location_top_level,
    ma_dr_wav_metadata_location_inside_info_list,
    ma_dr_wav_metadata_location_inside_adtl_list
} ma_dr_wav_metadata_location;
typedef struct
{
    ma_uint8 id[4];
    ma_dr_wav_metadata_location chunkLocation;
    ma_uint32 dataSizeInBytes;
    ma_uint8* pData;
} ma_dr_wav_unknown_metadata;
typedef struct
{
    ma_dr_wav_metadata_type type;
    union
    {
        ma_dr_wav_cue cue;
        ma_dr_wav_smpl smpl;
        ma_dr_wav_acid acid;
        ma_dr_wav_inst inst;
        ma_dr_wav_bext bext;
        ma_dr_wav_list_label_or_note labelOrNote;
        ma_dr_wav_list_labelled_cue_region labelledCueRegion;
        ma_dr_wav_list_info_text infoText;
        ma_dr_wav_unknown_metadata unknown;
    } data;
} ma_dr_wav_metadata;
typedef struct
{
    ma_dr_wav_read_proc onRead;
    ma_dr_wav_write_proc onWrite;
    ma_dr_wav_seek_proc onSeek;
    void* pUserData;
    ma_allocation_callbacks allocationCallbacks;
    ma_dr_wav_container container;
    ma_dr_wav_fmt fmt;
    ma_uint32 sampleRate;
    ma_uint16 channels;
    ma_uint16 bitsPerSample;
    ma_uint16 translatedFormatTag;
    ma_uint64 totalPCMFrameCount;
    ma_uint64 dataChunkDataSize;
    ma_uint64 dataChunkDataPos;
    ma_uint64 bytesRemaining;
    ma_uint64 readCursorInPCMFrames;
    ma_uint64 dataChunkDataSizeTargetWrite;
    ma_bool32 isSequentialWrite;
    ma_dr_wav_metadata* pMetadata;
    ma_uint32 metadataCount;
    ma_dr_wav__memory_stream memoryStream;
    ma_dr_wav__memory_stream_write memoryStreamWrite;
    struct
    {
        ma_uint32 bytesRemainingInBlock;
        ma_uint16 predictor[2];
        ma_int32  delta[2];
        ma_int32  cachedFrames[4];
        ma_uint32 cachedFrameCount;
        ma_int32  prevFrames[2][2];
    } msadpcm;
    struct
    {
        ma_uint32 bytesRemainingInBlock;
        ma_int32  predictor[2];
        ma_int32  stepIndex[2];
        ma_int32  cachedFrames[16];
        ma_uint32 cachedFrameCount;
    } ima;
    struct
    {
        ma_bool8 isLE;
        ma_bool8 isUnsigned;
    } aiff;
} ma_dr_wav;
MA_API ma_bool32 ma_dr_wav_init(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_ex(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, ma_dr_wav_chunk_proc onChunk, void* pReadSeekUserData, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_with_metadata(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_write(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_dr_wav_write_proc onWrite, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_write_sequential(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, ma_dr_wav_write_proc onWrite, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_write_sequential_pcm_frames(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, ma_dr_wav_write_proc onWrite, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_write_with_metadata(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_dr_wav_write_proc onWrite, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks, ma_dr_wav_metadata* pMetadata, ma_uint32 metadataCount);
MA_API ma_uint64 ma_dr_wav_target_write_size_bytes(const ma_dr_wav_data_format* pFormat, ma_uint64 totalFrameCount, ma_dr_wav_metadata* pMetadata, ma_uint32 metadataCount);
MA_API ma_dr_wav_metadata* ma_dr_wav_take_ownership_of_metadata(ma_dr_wav* pWav);
MA_API ma_result ma_dr_wav_uninit(ma_dr_wav* pWav);
MA_API size_t ma_dr_wav_read_raw(ma_dr_wav* pWav, size_t bytesToRead, void* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames(ma_dr_wav* pWav, ma_uint64 framesToRead, void* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_le(ma_dr_wav* pWav, ma_uint64 framesToRead, void* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_be(ma_dr_wav* pWav, ma_uint64 framesToRead, void* pBufferOut);
MA_API ma_bool32 ma_dr_wav_seek_to_pcm_frame(ma_dr_wav* pWav, ma_uint64 targetFrameIndex);
MA_API ma_result ma_dr_wav_get_cursor_in_pcm_frames(ma_dr_wav* pWav, ma_uint64* pCursor);
MA_API ma_result ma_dr_wav_get_length_in_pcm_frames(ma_dr_wav* pWav, ma_uint64* pLength);
MA_API size_t ma_dr_wav_write_raw(ma_dr_wav* pWav, size_t bytesToWrite, const void* pData);
MA_API ma_uint64 ma_dr_wav_write_pcm_frames(ma_dr_wav* pWav, ma_uint64 framesToWrite, const void* pData);
MA_API ma_uint64 ma_dr_wav_write_pcm_frames_le(ma_dr_wav* pWav, ma_uint64 framesToWrite, const void* pData);
MA_API ma_uint64 ma_dr_wav_write_pcm_frames_be(ma_dr_wav* pWav, ma_uint64 framesToWrite, const void* pData);
#ifndef MA_DR_WAV_NO_CONVERSION_API
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s16(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s16le(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s16be(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut);
MA_API void ma_dr_wav_u8_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s24_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s32_to_s16(ma_int16* pOut, const ma_int32* pIn, size_t sampleCount);
MA_API void ma_dr_wav_f32_to_s16(ma_int16* pOut, const float* pIn, size_t sampleCount);
MA_API void ma_dr_wav_f64_to_s16(ma_int16* pOut, const double* pIn, size_t sampleCount);
MA_API void ma_dr_wav_alaw_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_mulaw_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_f32(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_f32le(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_f32be(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut);
MA_API void ma_dr_wav_u8_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s16_to_f32(float* pOut, const ma_int16* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s24_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s32_to_f32(float* pOut, const ma_int32* pIn, size_t sampleCount);
MA_API void ma_dr_wav_f64_to_f32(float* pOut, const double* pIn, size_t sampleCount);
MA_API void ma_dr_wav_alaw_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_mulaw_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s32(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s32le(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut);
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s32be(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut);
MA_API void ma_dr_wav_u8_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s16_to_s32(ma_int32* pOut, const ma_int16* pIn, size_t sampleCount);
MA_API void ma_dr_wav_s24_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_f32_to_s32(ma_int32* pOut, const float* pIn, size_t sampleCount);
MA_API void ma_dr_wav_f64_to_s32(ma_int32* pOut, const double* pIn, size_t sampleCount);
MA_API void ma_dr_wav_alaw_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount);
MA_API void ma_dr_wav_mulaw_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount);
#endif
#ifndef MA_DR_WAV_NO_STDIO
MA_API ma_bool32 ma_dr_wav_init_file(ma_dr_wav* pWav, const char* filename, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_ex(ma_dr_wav* pWav, const char* filename, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_ex_w(ma_dr_wav* pWav, const wchar_t* filename, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_with_metadata(ma_dr_wav* pWav, const char* filename, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_with_metadata_w(ma_dr_wav* pWav, const wchar_t* filename, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_write(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential_pcm_frames(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_write_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential_pcm_frames_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API ma_bool32 ma_dr_wav_init_memory(ma_dr_wav* pWav, const void* data, size_t dataSize, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_memory_ex(ma_dr_wav* pWav, const void* data, size_t dataSize, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_memory_with_metadata(ma_dr_wav* pWav, const void* data, size_t dataSize, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_memory_write(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_memory_write_sequential(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_wav_init_memory_write_sequential_pcm_frames(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
#ifndef MA_DR_WAV_NO_CONVERSION_API
MA_API ma_int16* ma_dr_wav_open_and_read_pcm_frames_s16(ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_wav_open_and_read_pcm_frames_f32(ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int32* ma_dr_wav_open_and_read_pcm_frames_s32(ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
#ifndef MA_DR_WAV_NO_STDIO
MA_API ma_int16* ma_dr_wav_open_file_and_read_pcm_frames_s16(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_wav_open_file_and_read_pcm_frames_f32(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int32* ma_dr_wav_open_file_and_read_pcm_frames_s32(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_wav_open_file_and_read_pcm_frames_s16_w(const wchar_t* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_wav_open_file_and_read_pcm_frames_f32_w(const wchar_t* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int32* ma_dr_wav_open_file_and_read_pcm_frames_s32_w(const wchar_t* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API ma_int16* ma_dr_wav_open_memory_and_read_pcm_frames_s16(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_wav_open_memory_and_read_pcm_frames_f32(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int32* ma_dr_wav_open_memory_and_read_pcm_frames_s32(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API void ma_dr_wav_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_uint16 ma_dr_wav_bytes_to_u16(const ma_uint8* data);
MA_API ma_int16 ma_dr_wav_bytes_to_s16(const ma_uint8* data);
MA_API ma_uint32 ma_dr_wav_bytes_to_u32(const ma_uint8* data);
MA_API ma_int32 ma_dr_wav_bytes_to_s32(const ma_uint8* data);
MA_API ma_uint64 ma_dr_wav_bytes_to_u64(const ma_uint8* data);
MA_API ma_int64 ma_dr_wav_bytes_to_s64(const ma_uint8* data);
MA_API float ma_dr_wav_bytes_to_f32(const ma_uint8* data);
MA_API ma_bool32 ma_dr_wav_guid_equal(const ma_uint8 a[16], const ma_uint8 b[16]);
MA_API ma_bool32 ma_dr_wav_fourcc_equal(const ma_uint8* a, const char* b);
#ifdef __cplusplus
}
#endif
#endif
/* dr_wav_h end */
#endif  /* MA_NO_WAV */

#if !defined(MA_NO_FLAC) && !defined(MA_NO_DECODING)
/* dr_flac_h begin */
#ifndef ma_dr_flac_h
#define ma_dr_flac_h
#ifdef __cplusplus
extern "C" {
#endif
#define MA_DR_FLAC_STRINGIFY(x)      #x
#define MA_DR_FLAC_XSTRINGIFY(x)     MA_DR_FLAC_STRINGIFY(x)
#define MA_DR_FLAC_VERSION_MAJOR     0
#define MA_DR_FLAC_VERSION_MINOR     12
#define MA_DR_FLAC_VERSION_REVISION  43
#define MA_DR_FLAC_VERSION_STRING    MA_DR_FLAC_XSTRINGIFY(MA_DR_FLAC_VERSION_MAJOR) "." MA_DR_FLAC_XSTRINGIFY(MA_DR_FLAC_VERSION_MINOR) "." MA_DR_FLAC_XSTRINGIFY(MA_DR_FLAC_VERSION_REVISION)
#include <stddef.h>
#if defined(_MSC_VER) && _MSC_VER >= 1700
    #define MA_DR_FLAC_DEPRECATED       __declspec(deprecated)
#elif (defined(__GNUC__) && __GNUC__ >= 4)
    #define MA_DR_FLAC_DEPRECATED       __attribute__((deprecated))
#elif defined(__has_feature)
    #if __has_feature(attribute_deprecated)
        #define MA_DR_FLAC_DEPRECATED   __attribute__((deprecated))
    #else
        #define MA_DR_FLAC_DEPRECATED
    #endif
#else
    #define MA_DR_FLAC_DEPRECATED
#endif
MA_API void ma_dr_flac_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision);
MA_API const char* ma_dr_flac_version_string(void);
#ifndef MA_DR_FLAC_BUFFER_SIZE
#define MA_DR_FLAC_BUFFER_SIZE   4096
#endif
#ifdef MA_64BIT
typedef ma_uint64 ma_dr_flac_cache_t;
#else
typedef ma_uint32 ma_dr_flac_cache_t;
#endif
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_STREAMINFO       0
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_PADDING          1
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_APPLICATION      2
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_SEEKTABLE        3
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_VORBIS_COMMENT   4
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_CUESHEET         5
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_PICTURE          6
#define MA_DR_FLAC_METADATA_BLOCK_TYPE_INVALID          127
#define MA_DR_FLAC_PICTURE_TYPE_OTHER                   0
#define MA_DR_FLAC_PICTURE_TYPE_FILE_ICON               1
#define MA_DR_FLAC_PICTURE_TYPE_OTHER_FILE_ICON         2
#define MA_DR_FLAC_PICTURE_TYPE_COVER_FRONT             3
#define MA_DR_FLAC_PICTURE_TYPE_COVER_BACK              4
#define MA_DR_FLAC_PICTURE_TYPE_LEAFLET_PAGE            5
#define MA_DR_FLAC_PICTURE_TYPE_MEDIA                   6
#define MA_DR_FLAC_PICTURE_TYPE_LEAD_ARTIST             7
#define MA_DR_FLAC_PICTURE_TYPE_ARTIST                  8
#define MA_DR_FLAC_PICTURE_TYPE_CONDUCTOR               9
#define MA_DR_FLAC_PICTURE_TYPE_BAND                    10
#define MA_DR_FLAC_PICTURE_TYPE_COMPOSER                11
#define MA_DR_FLAC_PICTURE_TYPE_LYRICIST                12
#define MA_DR_FLAC_PICTURE_TYPE_RECORDING_LOCATION      13
#define MA_DR_FLAC_PICTURE_TYPE_DURING_RECORDING        14
#define MA_DR_FLAC_PICTURE_TYPE_DURING_PERFORMANCE      15
#define MA_DR_FLAC_PICTURE_TYPE_SCREEN_CAPTURE          16
#define MA_DR_FLAC_PICTURE_TYPE_BRIGHT_COLORED_FISH     17
#define MA_DR_FLAC_PICTURE_TYPE_ILLUSTRATION            18
#define MA_DR_FLAC_PICTURE_TYPE_BAND_LOGOTYPE           19
#define MA_DR_FLAC_PICTURE_TYPE_PUBLISHER_LOGOTYPE      20
typedef enum
{
    ma_dr_flac_container_native,
    ma_dr_flac_container_ogg,
    ma_dr_flac_container_unknown
} ma_dr_flac_container;
typedef enum
{
    ma_dr_flac_seek_origin_start,
    ma_dr_flac_seek_origin_current
} ma_dr_flac_seek_origin;
typedef struct
{
    ma_uint64 firstPCMFrame;
    ma_uint64 flacFrameOffset;
    ma_uint16 pcmFrameCount;
} ma_dr_flac_seekpoint;
typedef struct
{
    ma_uint16 minBlockSizeInPCMFrames;
    ma_uint16 maxBlockSizeInPCMFrames;
    ma_uint32 minFrameSizeInPCMFrames;
    ma_uint32 maxFrameSizeInPCMFrames;
    ma_uint32 sampleRate;
    ma_uint8  channels;
    ma_uint8  bitsPerSample;
    ma_uint64 totalPCMFrameCount;
    ma_uint8  md5[16];
} ma_dr_flac_streaminfo;
typedef struct
{
    ma_uint32 type;
    const void* pRawData;
    ma_uint32 rawDataSize;
    union
    {
        ma_dr_flac_streaminfo streaminfo;
        struct
        {
            int unused;
        } padding;
        struct
        {
            ma_uint32 id;
            const void* pData;
            ma_uint32 dataSize;
        } application;
        struct
        {
            ma_uint32 seekpointCount;
            const ma_dr_flac_seekpoint* pSeekpoints;
        } seektable;
        struct
        {
            ma_uint32 vendorLength;
            const char* vendor;
            ma_uint32 commentCount;
            const void* pComments;
        } vorbis_comment;
        struct
        {
            char catalog[128];
            ma_uint64 leadInSampleCount;
            ma_bool32 isCD;
            ma_uint8 trackCount;
            const void* pTrackData;
        } cuesheet;
        struct
        {
            ma_uint32 type;
            ma_uint32 mimeLength;
            const char* mime;
            ma_uint32 descriptionLength;
            const char* description;
            ma_uint32 width;
            ma_uint32 height;
            ma_uint32 colorDepth;
            ma_uint32 indexColorCount;
            ma_uint32 pictureDataSize;
            const ma_uint8* pPictureData;
        } picture;
    } data;
} ma_dr_flac_metadata;
typedef size_t (* ma_dr_flac_read_proc)(void* pUserData, void* pBufferOut, size_t bytesToRead);
typedef ma_bool32 (* ma_dr_flac_seek_proc)(void* pUserData, int offset, ma_dr_flac_seek_origin origin);
typedef void (* ma_dr_flac_meta_proc)(void* pUserData, ma_dr_flac_metadata* pMetadata);
typedef struct
{
    const ma_uint8* data;
    size_t dataSize;
    size_t currentReadPos;
} ma_dr_flac__memory_stream;
typedef struct
{
    ma_dr_flac_read_proc onRead;
    ma_dr_flac_seek_proc onSeek;
    void* pUserData;
    size_t unalignedByteCount;
    ma_dr_flac_cache_t unalignedCache;
    ma_uint32 nextL2Line;
    ma_uint32 consumedBits;
    ma_dr_flac_cache_t cacheL2[MA_DR_FLAC_BUFFER_SIZE/sizeof(ma_dr_flac_cache_t)];
    ma_dr_flac_cache_t cache;
    ma_uint16 crc16;
    ma_dr_flac_cache_t crc16Cache;
    ma_uint32 crc16CacheIgnoredBytes;
} ma_dr_flac_bs;
typedef struct
{
    ma_uint8 subframeType;
    ma_uint8 wastedBitsPerSample;
    ma_uint8 lpcOrder;
    ma_int32* pSamplesS32;
} ma_dr_flac_subframe;
typedef struct
{
    ma_uint64 pcmFrameNumber;
    ma_uint32 flacFrameNumber;
    ma_uint32 sampleRate;
    ma_uint16 blockSizeInPCMFrames;
    ma_uint8 channelAssignment;
    ma_uint8 bitsPerSample;
    ma_uint8 crc8;
} ma_dr_flac_frame_header;
typedef struct
{
    ma_dr_flac_frame_header header;
    ma_uint32 pcmFramesRemaining;
    ma_dr_flac_subframe subframes[8];
} ma_dr_flac_frame;
typedef struct
{
    ma_dr_flac_meta_proc onMeta;
    void* pUserDataMD;
    ma_allocation_callbacks allocationCallbacks;
    ma_uint32 sampleRate;
    ma_uint8 channels;
    ma_uint8 bitsPerSample;
    ma_uint16 maxBlockSizeInPCMFrames;
    ma_uint64 totalPCMFrameCount;
    ma_dr_flac_container container;
    ma_uint32 seekpointCount;
    ma_dr_flac_frame currentFLACFrame;
    ma_uint64 currentPCMFrame;
    ma_uint64 firstFLACFramePosInBytes;
    ma_dr_flac__memory_stream memoryStream;
    ma_int32* pDecodedSamples;
    ma_dr_flac_seekpoint* pSeekpoints;
    void* _oggbs;
    ma_bool32 _noSeekTableSeek    : 1;
    ma_bool32 _noBinarySearchSeek : 1;
    ma_bool32 _noBruteForceSeek   : 1;
    ma_dr_flac_bs bs;
    ma_uint8 pExtraData[1];
} ma_dr_flac;
MA_API ma_dr_flac* ma_dr_flac_open(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_relaxed(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_container container, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_with_metadata(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_with_metadata_relaxed(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, ma_dr_flac_container container, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API void ma_dr_flac_close(ma_dr_flac* pFlac);
MA_API ma_uint64 ma_dr_flac_read_pcm_frames_s32(ma_dr_flac* pFlac, ma_uint64 framesToRead, ma_int32* pBufferOut);
MA_API ma_uint64 ma_dr_flac_read_pcm_frames_s16(ma_dr_flac* pFlac, ma_uint64 framesToRead, ma_int16* pBufferOut);
MA_API ma_uint64 ma_dr_flac_read_pcm_frames_f32(ma_dr_flac* pFlac, ma_uint64 framesToRead, float* pBufferOut);
MA_API ma_bool32 ma_dr_flac_seek_to_pcm_frame(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex);
#ifndef MA_DR_FLAC_NO_STDIO
MA_API ma_dr_flac* ma_dr_flac_open_file(const char* pFileName, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_file_w(const wchar_t* pFileName, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_file_with_metadata(const char* pFileName, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_file_with_metadata_w(const wchar_t* pFileName, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API ma_dr_flac* ma_dr_flac_open_memory(const void* pData, size_t dataSize, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_dr_flac* ma_dr_flac_open_memory_with_metadata(const void* pData, size_t dataSize, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int32* ma_dr_flac_open_and_read_pcm_frames_s32(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_flac_open_and_read_pcm_frames_s16(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_flac_open_and_read_pcm_frames_f32(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
#ifndef MA_DR_FLAC_NO_STDIO
MA_API ma_int32* ma_dr_flac_open_file_and_read_pcm_frames_s32(const char* filename, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_flac_open_file_and_read_pcm_frames_s16(const char* filename, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_flac_open_file_and_read_pcm_frames_f32(const char* filename, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API ma_int32* ma_dr_flac_open_memory_and_read_pcm_frames_s32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_flac_open_memory_and_read_pcm_frames_s16(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_flac_open_memory_and_read_pcm_frames_f32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API void ma_dr_flac_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks);
typedef struct
{
    ma_uint32 countRemaining;
    const char* pRunningData;
} ma_dr_flac_vorbis_comment_iterator;
MA_API void ma_dr_flac_init_vorbis_comment_iterator(ma_dr_flac_vorbis_comment_iterator* pIter, ma_uint32 commentCount, const void* pComments);
MA_API const char* ma_dr_flac_next_vorbis_comment(ma_dr_flac_vorbis_comment_iterator* pIter, ma_uint32* pCommentLengthOut);
typedef struct
{
    ma_uint32 countRemaining;
    const char* pRunningData;
} ma_dr_flac_cuesheet_track_iterator;
typedef struct
{
    ma_uint64 offset;
    ma_uint8 index;
    ma_uint8 reserved[3];
} ma_dr_flac_cuesheet_track_index;
typedef struct
{
    ma_uint64 offset;
    ma_uint8 trackNumber;
    char ISRC[12];
    ma_bool8 isAudio;
    ma_bool8 preEmphasis;
    ma_uint8 indexCount;
    const ma_dr_flac_cuesheet_track_index* pIndexPoints;
} ma_dr_flac_cuesheet_track;
MA_API void ma_dr_flac_init_cuesheet_track_iterator(ma_dr_flac_cuesheet_track_iterator* pIter, ma_uint32 trackCount, const void* pTrackData);
MA_API ma_bool32 ma_dr_flac_next_cuesheet_track(ma_dr_flac_cuesheet_track_iterator* pIter, ma_dr_flac_cuesheet_track* pCuesheetTrack);
#ifdef __cplusplus
}
#endif
#endif
/* dr_flac_h end */
#endif  /* MA_NO_FLAC */

#if !defined(MA_NO_MP3) && !defined(MA_NO_DECODING)
/* dr_mp3_h begin */
#ifndef ma_dr_mp3_h
#define ma_dr_mp3_h
#ifdef __cplusplus
extern "C" {
#endif
#define MA_DR_MP3_STRINGIFY(x)      #x
#define MA_DR_MP3_XSTRINGIFY(x)     MA_DR_MP3_STRINGIFY(x)
#define MA_DR_MP3_VERSION_MAJOR     0
#define MA_DR_MP3_VERSION_MINOR     6
#define MA_DR_MP3_VERSION_REVISION  40
#define MA_DR_MP3_VERSION_STRING    MA_DR_MP3_XSTRINGIFY(MA_DR_MP3_VERSION_MAJOR) "." MA_DR_MP3_XSTRINGIFY(MA_DR_MP3_VERSION_MINOR) "." MA_DR_MP3_XSTRINGIFY(MA_DR_MP3_VERSION_REVISION)
#include <stddef.h>
#define MA_DR_MP3_MAX_PCM_FRAMES_PER_MP3_FRAME  1152
#define MA_DR_MP3_MAX_SAMPLES_PER_FRAME         (MA_DR_MP3_MAX_PCM_FRAMES_PER_MP3_FRAME*2)
MA_API void ma_dr_mp3_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision);
MA_API const char* ma_dr_mp3_version_string(void);
typedef struct
{
    int frame_bytes, channels, hz, layer, bitrate_kbps;
} ma_dr_mp3dec_frame_info;
typedef struct
{
    float mdct_overlap[2][9*32], qmf_state[15*2*32];
    int reserv, free_format_bytes;
    ma_uint8 header[4], reserv_buf[511];
} ma_dr_mp3dec;
MA_API void ma_dr_mp3dec_init(ma_dr_mp3dec *dec);
MA_API int ma_dr_mp3dec_decode_frame(ma_dr_mp3dec *dec, const ma_uint8 *mp3, int mp3_bytes, void *pcm, ma_dr_mp3dec_frame_info *info);
MA_API void ma_dr_mp3dec_f32_to_s16(const float *in, ma_int16 *out, size_t num_samples);
typedef enum
{
    ma_dr_mp3_seek_origin_start,
    ma_dr_mp3_seek_origin_current
} ma_dr_mp3_seek_origin;
typedef struct
{
    ma_uint64 seekPosInBytes;
    ma_uint64 pcmFrameIndex;
    ma_uint16 mp3FramesToDiscard;
    ma_uint16 pcmFramesToDiscard;
} ma_dr_mp3_seek_point;
typedef size_t (* ma_dr_mp3_read_proc)(void* pUserData, void* pBufferOut, size_t bytesToRead);
typedef ma_bool32 (* ma_dr_mp3_seek_proc)(void* pUserData, int offset, ma_dr_mp3_seek_origin origin);
typedef struct
{
    ma_uint32 channels;
    ma_uint32 sampleRate;
} ma_dr_mp3_config;
typedef struct
{
    ma_dr_mp3dec decoder;
    ma_uint32 channels;
    ma_uint32 sampleRate;
    ma_dr_mp3_read_proc onRead;
    ma_dr_mp3_seek_proc onSeek;
    void* pUserData;
    ma_allocation_callbacks allocationCallbacks;
    ma_uint32 mp3FrameChannels;
    ma_uint32 mp3FrameSampleRate;
    ma_uint32 pcmFramesConsumedInMP3Frame;
    ma_uint32 pcmFramesRemainingInMP3Frame;
    ma_uint8 pcmFrames[sizeof(float)*MA_DR_MP3_MAX_SAMPLES_PER_FRAME];
    ma_uint64 currentPCMFrame;
    ma_uint64 streamCursor;
    ma_dr_mp3_seek_point* pSeekPoints;
    ma_uint32 seekPointCount;
    size_t dataSize;
    size_t dataCapacity;
    size_t dataConsumed;
    ma_uint8* pData;
    ma_bool32 atEnd : 1;
    struct
    {
        const ma_uint8* pData;
        size_t dataSize;
        size_t currentReadPos;
    } memory;
} ma_dr_mp3;
MA_API ma_bool32 ma_dr_mp3_init(ma_dr_mp3* pMP3, ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_mp3_init_memory(ma_dr_mp3* pMP3, const void* pData, size_t dataSize, const ma_allocation_callbacks* pAllocationCallbacks);
#ifndef MA_DR_MP3_NO_STDIO
MA_API ma_bool32 ma_dr_mp3_init_file(ma_dr_mp3* pMP3, const char* pFilePath, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_bool32 ma_dr_mp3_init_file_w(ma_dr_mp3* pMP3, const wchar_t* pFilePath, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API void ma_dr_mp3_uninit(ma_dr_mp3* pMP3);
MA_API ma_uint64 ma_dr_mp3_read_pcm_frames_f32(ma_dr_mp3* pMP3, ma_uint64 framesToRead, float* pBufferOut);
MA_API ma_uint64 ma_dr_mp3_read_pcm_frames_s16(ma_dr_mp3* pMP3, ma_uint64 framesToRead, ma_int16* pBufferOut);
MA_API ma_bool32 ma_dr_mp3_seek_to_pcm_frame(ma_dr_mp3* pMP3, ma_uint64 frameIndex);
MA_API ma_uint64 ma_dr_mp3_get_pcm_frame_count(ma_dr_mp3* pMP3);
MA_API ma_uint64 ma_dr_mp3_get_mp3_frame_count(ma_dr_mp3* pMP3);
MA_API ma_bool32 ma_dr_mp3_get_mp3_and_pcm_frame_count(ma_dr_mp3* pMP3, ma_uint64* pMP3FrameCount, ma_uint64* pPCMFrameCount);
MA_API ma_bool32 ma_dr_mp3_calculate_seek_points(ma_dr_mp3* pMP3, ma_uint32* pSeekPointCount, ma_dr_mp3_seek_point* pSeekPoints);
MA_API ma_bool32 ma_dr_mp3_bind_seek_table(ma_dr_mp3* pMP3, ma_uint32 seekPointCount, ma_dr_mp3_seek_point* pSeekPoints);
MA_API float* ma_dr_mp3_open_and_read_pcm_frames_f32(ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_mp3_open_and_read_pcm_frames_s16(ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API float* ma_dr_mp3_open_memory_and_read_pcm_frames_f32(const void* pData, size_t dataSize, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_mp3_open_memory_and_read_pcm_frames_s16(const void* pData, size_t dataSize, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
#ifndef MA_DR_MP3_NO_STDIO
MA_API float* ma_dr_mp3_open_file_and_read_pcm_frames_f32(const char* filePath, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_int16* ma_dr_mp3_open_file_and_read_pcm_frames_s16(const char* filePath, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks);
#endif
MA_API void* ma_dr_mp3_malloc(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API void ma_dr_mp3_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks);
#ifdef __cplusplus
}
#endif
#endif
/* dr_mp3_h end */
#endif  /* MA_NO_MP3 */


/**************************************************************************************************************************************************************

Decoding

**************************************************************************************************************************************************************/
#ifndef MA_NO_DECODING

static ma_result ma_decoder_read_bytes(ma_decoder* pDecoder, void* pBufferOut, size_t bytesToRead, size_t* pBytesRead)
{
    MA_ASSERT(pDecoder != NULL);

    return pDecoder->onRead(pDecoder, pBufferOut, bytesToRead, pBytesRead);
}

static ma_result ma_decoder_seek_bytes(ma_decoder* pDecoder, ma_int64 byteOffset, ma_seek_origin origin)
{
    MA_ASSERT(pDecoder != NULL);

    return pDecoder->onSeek(pDecoder, byteOffset, origin);
}

static ma_result ma_decoder_tell_bytes(ma_decoder* pDecoder, ma_int64* pCursor)
{
    MA_ASSERT(pDecoder != NULL);

    if (pDecoder->onTell == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    return pDecoder->onTell(pDecoder, pCursor);
}


MA_API ma_decoding_backend_config ma_decoding_backend_config_init(ma_format preferredFormat, ma_uint32 seekPointCount)
{
    ma_decoding_backend_config config;

    MA_ZERO_OBJECT(&config);
    config.preferredFormat = preferredFormat;
    config.seekPointCount  = seekPointCount;

    return config;
}


MA_API ma_decoder_config ma_decoder_config_init(ma_format outputFormat, ma_uint32 outputChannels, ma_uint32 outputSampleRate)
{
    ma_decoder_config config;
    MA_ZERO_OBJECT(&config);
    config.format         = outputFormat;
    config.channels       = outputChannels;
    config.sampleRate     = outputSampleRate;
    config.resampling     = ma_resampler_config_init(ma_format_unknown, 0, 0, 0, ma_resample_algorithm_linear); /* Format/channels/rate doesn't matter here. */
    config.encodingFormat = ma_encoding_format_unknown;

    /* Note that we are intentionally leaving the channel map empty here which will cause the default channel map to be used. */

    return config;
}

MA_API ma_decoder_config ma_decoder_config_init_default(void)
{
    return ma_decoder_config_init(ma_format_unknown, 0, 0);
}

MA_API ma_decoder_config ma_decoder_config_init_copy(const ma_decoder_config* pConfig)
{
    ma_decoder_config config;
    if (pConfig != NULL) {
        config = *pConfig;
    } else {
        MA_ZERO_OBJECT(&config);
    }

    return config;
}

static ma_result ma_decoder__init_data_converter(ma_decoder* pDecoder, const ma_decoder_config* pConfig)
{
    ma_result result;
    ma_data_converter_config converterConfig;
    ma_format internalFormat;
    ma_uint32 internalChannels;
    ma_uint32 internalSampleRate;
    ma_channel internalChannelMap[MA_MAX_CHANNELS];

    MA_ASSERT(pDecoder != NULL);
    MA_ASSERT(pConfig  != NULL);

    result = ma_data_source_get_data_format(pDecoder->pBackend, &internalFormat, &internalChannels, &internalSampleRate, internalChannelMap, ma_countof(internalChannelMap));
    if (result != MA_SUCCESS) {
        return result;  /* Failed to retrieve the internal data format. */
    }


    /* Make sure we're not asking for too many channels. */
    if (pConfig->channels > MA_MAX_CHANNELS) {
        return MA_INVALID_ARGS;
    }

    /* The internal channels should have already been validated at a higher level, but we'll do it again explicitly here for safety. */
    if (internalChannels > MA_MAX_CHANNELS) {
        return MA_INVALID_ARGS;
    }


    /* Output format. */
    if (pConfig->format == ma_format_unknown) {
        pDecoder->outputFormat = internalFormat;
    } else {
        pDecoder->outputFormat = pConfig->format;
    }

    if (pConfig->channels == 0) {
        pDecoder->outputChannels = internalChannels;
    } else {
        pDecoder->outputChannels = pConfig->channels;
    }

    if (pConfig->sampleRate == 0) {
        pDecoder->outputSampleRate = internalSampleRate;
    } else {
        pDecoder->outputSampleRate = pConfig->sampleRate;
    }

    converterConfig = ma_data_converter_config_init(
        internalFormat,     pDecoder->outputFormat,
        internalChannels,   pDecoder->outputChannels,
        internalSampleRate, pDecoder->outputSampleRate
    );
    converterConfig.pChannelMapIn          = internalChannelMap;
    converterConfig.pChannelMapOut         = pConfig->pChannelMap;
    converterConfig.channelMixMode         = pConfig->channelMixMode;
    converterConfig.ditherMode             = pConfig->ditherMode;
    converterConfig.allowDynamicSampleRate = MA_FALSE;   /* Never allow dynamic sample rate conversion. Setting this to true will disable passthrough optimizations. */
    converterConfig.resampling             = pConfig->resampling;

    result = ma_data_converter_init(&converterConfig, &pDecoder->allocationCallbacks, &pDecoder->converter);
    if (result != MA_SUCCESS) {
        return result;
    }

    /*
    Now that we have the decoder we need to determine whether or not we need a heap-allocated cache. We'll
    need this if the data converter does not support calculation of the required input frame count. To
    determine support for this we'll just run a test.
    */
    {
        ma_uint64 unused;

        result = ma_data_converter_get_required_input_frame_count(&pDecoder->converter, 1, &unused);
        if (result != MA_SUCCESS) {
            /*
            We were unable to calculate the required input frame count which means we'll need to use
            a heap-allocated cache.
            */
            ma_uint64 inputCacheCapSizeInBytes;

            pDecoder->inputCacheCap = MA_DATA_CONVERTER_STACK_BUFFER_SIZE / ma_get_bytes_per_frame(internalFormat, internalChannels);

            /* Not strictly necessary, but keeping here for safety in case we change the default value of pDecoder->inputCacheCap. */
            inputCacheCapSizeInBytes = pDecoder->inputCacheCap * ma_get_bytes_per_frame(internalFormat, internalChannels);
            if (inputCacheCapSizeInBytes > MA_SIZE_MAX) {
                ma_data_converter_uninit(&pDecoder->converter, &pDecoder->allocationCallbacks);
                return MA_OUT_OF_MEMORY;
            }

            pDecoder->pInputCache = ma_malloc((size_t)inputCacheCapSizeInBytes, &pDecoder->allocationCallbacks);    /* Safe cast to size_t. */
            if (pDecoder->pInputCache == NULL) {
                ma_data_converter_uninit(&pDecoder->converter, &pDecoder->allocationCallbacks);
                return MA_OUT_OF_MEMORY;
            }
        }
    }

    return MA_SUCCESS;
}



static ma_result ma_decoder_internal_on_read__custom(void* pUserData, void* pBufferOut, size_t bytesToRead, size_t* pBytesRead)
{
    ma_decoder* pDecoder = (ma_decoder*)pUserData;
    MA_ASSERT(pDecoder != NULL);

    return ma_decoder_read_bytes(pDecoder, pBufferOut, bytesToRead, pBytesRead);
}

static ma_result ma_decoder_internal_on_seek__custom(void* pUserData, ma_int64 offset, ma_seek_origin origin)
{
    ma_decoder* pDecoder = (ma_decoder*)pUserData;
    MA_ASSERT(pDecoder != NULL);

    return ma_decoder_seek_bytes(pDecoder, offset, origin);
}

static ma_result ma_decoder_internal_on_tell__custom(void* pUserData, ma_int64* pCursor)
{
    ma_decoder* pDecoder = (ma_decoder*)pUserData;
    MA_ASSERT(pDecoder != NULL);

    return ma_decoder_tell_bytes(pDecoder, pCursor);
}


static ma_result ma_decoder_init_from_vtable__internal(const ma_decoding_backend_vtable* pVTable, void* pVTableUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoding_backend_config backendConfig;
    ma_data_source* pBackend;

    MA_ASSERT(pVTable  != NULL);
    MA_ASSERT(pConfig  != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pVTable->onInit == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    backendConfig = ma_decoding_backend_config_init(pConfig->format, pConfig->seekPointCount);

    result = pVTable->onInit(pVTableUserData, ma_decoder_internal_on_read__custom, ma_decoder_internal_on_seek__custom, ma_decoder_internal_on_tell__custom, pDecoder, &backendConfig, &pDecoder->allocationCallbacks, &pBackend);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the backend from this vtable. */
    }

    /* Getting here means we were able to initialize the backend so we can now initialize the decoder. */
    pDecoder->pBackend         = pBackend;
    pDecoder->pBackendVTable   = pVTable;
    pDecoder->pBackendUserData = pConfig->pCustomBackendUserData;

    return MA_SUCCESS;
}

static ma_result ma_decoder_init_from_file__internal(const ma_decoding_backend_vtable* pVTable, void* pVTableUserData, const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoding_backend_config backendConfig;
    ma_data_source* pBackend;

    MA_ASSERT(pVTable  != NULL);
    MA_ASSERT(pConfig  != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pVTable->onInitFile == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    backendConfig = ma_decoding_backend_config_init(pConfig->format, pConfig->seekPointCount);

    result = pVTable->onInitFile(pVTableUserData, pFilePath, &backendConfig, &pDecoder->allocationCallbacks, &pBackend);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the backend from this vtable. */
    }

    /* Getting here means we were able to initialize the backend so we can now initialize the decoder. */
    pDecoder->pBackend         = pBackend;
    pDecoder->pBackendVTable   = pVTable;
    pDecoder->pBackendUserData = pConfig->pCustomBackendUserData;

    return MA_SUCCESS;
}

static ma_result ma_decoder_init_from_file_w__internal(const ma_decoding_backend_vtable* pVTable, void* pVTableUserData, const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoding_backend_config backendConfig;
    ma_data_source* pBackend;

    MA_ASSERT(pVTable  != NULL);
    MA_ASSERT(pConfig  != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pVTable->onInitFileW == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    backendConfig = ma_decoding_backend_config_init(pConfig->format, pConfig->seekPointCount);

    result = pVTable->onInitFileW(pVTableUserData, pFilePath, &backendConfig, &pDecoder->allocationCallbacks, &pBackend);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the backend from this vtable. */
    }

    /* Getting here means we were able to initialize the backend so we can now initialize the decoder. */
    pDecoder->pBackend         = pBackend;
    pDecoder->pBackendVTable   = pVTable;
    pDecoder->pBackendUserData = pConfig->pCustomBackendUserData;

    return MA_SUCCESS;
}

static ma_result ma_decoder_init_from_memory__internal(const ma_decoding_backend_vtable* pVTable, void* pVTableUserData, const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoding_backend_config backendConfig;
    ma_data_source* pBackend;

    MA_ASSERT(pVTable  != NULL);
    MA_ASSERT(pConfig  != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pVTable->onInitMemory == NULL) {
        return MA_NOT_IMPLEMENTED;
    }

    backendConfig = ma_decoding_backend_config_init(pConfig->format, pConfig->seekPointCount);

    result = pVTable->onInitMemory(pVTableUserData, pData, dataSize, &backendConfig, &pDecoder->allocationCallbacks, &pBackend);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the backend from this vtable. */
    }

    /* Getting here means we were able to initialize the backend so we can now initialize the decoder. */
    pDecoder->pBackend         = pBackend;
    pDecoder->pBackendVTable   = pVTable;
    pDecoder->pBackendUserData = pConfig->pCustomBackendUserData;

    return MA_SUCCESS;
}



static ma_result ma_decoder_init_custom__internal(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result = MA_NO_BACKEND;
    size_t ivtable;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pConfig->ppCustomBackendVTables == NULL) {
        return MA_NO_BACKEND;
    }

    /* The order each backend is listed is what defines the priority. */
    for (ivtable = 0; ivtable < pConfig->customBackendCount; ivtable += 1) {
        const ma_decoding_backend_vtable* pVTable = pConfig->ppCustomBackendVTables[ivtable];
        if (pVTable != NULL) {
            result = ma_decoder_init_from_vtable__internal(pVTable, pConfig->pCustomBackendUserData, pConfig, pDecoder);
            if (result == MA_SUCCESS) {
                return MA_SUCCESS;
            } else {
                /* Initialization failed. Move on to the next one, but seek back to the start first so the next vtable starts from the first byte of the file. */
                result = ma_decoder_seek_bytes(pDecoder, 0, ma_seek_origin_start);
                if (result != MA_SUCCESS) {
                    return result;  /* Failed to seek back to the start. */
                }
            }
        } else {
            /* No vtable. */
        }
    }

    /* Getting here means we couldn't find a backend. */
    return MA_NO_BACKEND;
}

static ma_result ma_decoder_init_custom_from_file__internal(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result = MA_NO_BACKEND;
    size_t ivtable;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pConfig->ppCustomBackendVTables == NULL) {
        return MA_NO_BACKEND;
    }

    /* The order each backend is listed is what defines the priority. */
    for (ivtable = 0; ivtable < pConfig->customBackendCount; ivtable += 1) {
        const ma_decoding_backend_vtable* pVTable = pConfig->ppCustomBackendVTables[ivtable];
        if (pVTable != NULL) {
            result = ma_decoder_init_from_file__internal(pVTable, pConfig->pCustomBackendUserData, pFilePath, pConfig, pDecoder);
            if (result == MA_SUCCESS) {
                return MA_SUCCESS;
            }
        } else {
            /* No vtable. */
        }
    }

    /* Getting here means we couldn't find a backend. */
    return MA_NO_BACKEND;
}

static ma_result ma_decoder_init_custom_from_file_w__internal(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result = MA_NO_BACKEND;
    size_t ivtable;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pConfig->ppCustomBackendVTables == NULL) {
        return MA_NO_BACKEND;
    }

    /* The order each backend is listed is what defines the priority. */
    for (ivtable = 0; ivtable < pConfig->customBackendCount; ivtable += 1) {
        const ma_decoding_backend_vtable* pVTable = pConfig->ppCustomBackendVTables[ivtable];
        if (pVTable != NULL) {
            result = ma_decoder_init_from_file_w__internal(pVTable, pConfig->pCustomBackendUserData, pFilePath, pConfig, pDecoder);
            if (result == MA_SUCCESS) {
                return MA_SUCCESS;
            }
        } else {
            /* No vtable. */
        }
    }

    /* Getting here means we couldn't find a backend. */
    return MA_NO_BACKEND;
}

static ma_result ma_decoder_init_custom_from_memory__internal(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result = MA_NO_BACKEND;
    size_t ivtable;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pDecoder != NULL);

    if (pConfig->ppCustomBackendVTables == NULL) {
        return MA_NO_BACKEND;
    }

    /* The order each backend is listed is what defines the priority. */
    for (ivtable = 0; ivtable < pConfig->customBackendCount; ivtable += 1) {
        const ma_decoding_backend_vtable* pVTable = pConfig->ppCustomBackendVTables[ivtable];
        if (pVTable != NULL) {
            result = ma_decoder_init_from_memory__internal(pVTable, pConfig->pCustomBackendUserData, pData, dataSize, pConfig, pDecoder);
            if (result == MA_SUCCESS) {
                return MA_SUCCESS;
            }
        } else {
            /* No vtable. */
        }
    }

    /* Getting here means we couldn't find a backend. */
    return MA_NO_BACKEND;
}


/* WAV */
#ifdef ma_dr_wav_h
#define MA_HAS_WAV

typedef struct
{
    ma_data_source_base ds;
    ma_read_proc onRead;
    ma_seek_proc onSeek;
    ma_tell_proc onTell;
    void* pReadSeekTellUserData;
    ma_format format;           /* Can be f32, s16 or s32. */
#if !defined(MA_NO_WAV)
    ma_dr_wav dr;
#endif
} ma_wav;

MA_API ma_result ma_wav_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav);
MA_API ma_result ma_wav_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav);
MA_API ma_result ma_wav_init_file_w(const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav);
MA_API ma_result ma_wav_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav);
MA_API void ma_wav_uninit(ma_wav* pWav, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_result ma_wav_read_pcm_frames(ma_wav* pWav, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead);
MA_API ma_result ma_wav_seek_to_pcm_frame(ma_wav* pWav, ma_uint64 frameIndex);
MA_API ma_result ma_wav_get_data_format(ma_wav* pWav, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
MA_API ma_result ma_wav_get_cursor_in_pcm_frames(ma_wav* pWav, ma_uint64* pCursor);
MA_API ma_result ma_wav_get_length_in_pcm_frames(ma_wav* pWav, ma_uint64* pLength);


static ma_result ma_wav_ds_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_wav_read_pcm_frames((ma_wav*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_wav_ds_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_wav_seek_to_pcm_frame((ma_wav*)pDataSource, frameIndex);
}

static ma_result ma_wav_ds_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_wav_get_data_format((ma_wav*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_wav_ds_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_wav_get_cursor_in_pcm_frames((ma_wav*)pDataSource, pCursor);
}

static ma_result ma_wav_ds_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_wav_get_length_in_pcm_frames((ma_wav*)pDataSource, pLength);
}

static ma_data_source_vtable g_ma_wav_ds_vtable =
{
    ma_wav_ds_read,
    ma_wav_ds_seek,
    ma_wav_ds_get_data_format,
    ma_wav_ds_get_cursor,
    ma_wav_ds_get_length,
    NULL,   /* onSetLooping */
    0
};


#if !defined(MA_NO_WAV)
static size_t ma_wav_dr_callback__read(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    ma_wav* pWav = (ma_wav*)pUserData;
    ma_result result;
    size_t bytesRead;

    MA_ASSERT(pWav != NULL);

    result = pWav->onRead(pWav->pReadSeekTellUserData, pBufferOut, bytesToRead, &bytesRead);
    (void)result;

    return bytesRead;
}

static ma_bool32 ma_wav_dr_callback__seek(void* pUserData, int offset, ma_dr_wav_seek_origin origin)
{
    ma_wav* pWav = (ma_wav*)pUserData;
    ma_result result;
    ma_seek_origin maSeekOrigin;

    MA_ASSERT(pWav != NULL);

    maSeekOrigin = ma_seek_origin_start;
    if (origin == ma_dr_wav_seek_origin_current) {
        maSeekOrigin =  ma_seek_origin_current;
    }

    result = pWav->onSeek(pWav->pReadSeekTellUserData, offset, maSeekOrigin);
    if (result != MA_SUCCESS) {
        return MA_FALSE;
    }

    return MA_TRUE;
}
#endif

static ma_result ma_wav_init_internal(const ma_decoding_backend_config* pConfig, ma_wav* pWav)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pWav);
    pWav->format = ma_format_unknown;   /* Use closest match to source file by default. */

    if (pConfig != NULL && (pConfig->preferredFormat == ma_format_f32 || pConfig->preferredFormat == ma_format_s16 || pConfig->preferredFormat == ma_format_s32)) {
        pWav->format = pConfig->preferredFormat;
    } else {
        /* Getting here means something other than f32 and s16 was specified. Just leave this unset to use the default format. */
    }

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_wav_ds_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pWav->ds);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the base data source. */
    }

    return MA_SUCCESS;
}

static ma_result ma_wav_post_init(ma_wav* pWav)
{
    /*
    If an explicit format was not specified, try picking the closest match based on the internal
    format. The format needs to be supported by miniaudio.
    */
    if (pWav->format == ma_format_unknown) {
        switch (pWav->dr.translatedFormatTag)
        {
            case MA_DR_WAVE_FORMAT_PCM:
            {
                if (pWav->dr.bitsPerSample == 8) {
                    pWav->format = ma_format_u8;
                } else if (pWav->dr.bitsPerSample == 16) {
                    pWav->format = ma_format_s16;
                } else if (pWav->dr.bitsPerSample == 24) {
                    pWav->format = ma_format_s24;
                } else if (pWav->dr.bitsPerSample == 32) {
                    pWav->format = ma_format_s32;
                }
            } break;

            case MA_DR_WAVE_FORMAT_IEEE_FLOAT:
            {
                if (pWav->dr.bitsPerSample == 32) {
                    pWav->format = ma_format_f32;
                }
            } break;

            default: break;
        }

        /* Fall back to f32 if we couldn't find anything. */
        if (pWav->format == ma_format_unknown) {
            pWav->format =  ma_format_f32;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_wav_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav)
{
    ma_result result;

    result = ma_wav_init_internal(pConfig, pWav);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (onRead == NULL || onSeek == NULL) {
        return MA_INVALID_ARGS; /* onRead and onSeek are mandatory. */
    }

    pWav->onRead = onRead;
    pWav->onSeek = onSeek;
    pWav->onTell = onTell;
    pWav->pReadSeekTellUserData = pReadSeekTellUserData;

    #if !defined(MA_NO_WAV)
    {
        ma_bool32 wavResult;

        wavResult = ma_dr_wav_init(&pWav->dr, ma_wav_dr_callback__read, ma_wav_dr_callback__seek, pWav, pAllocationCallbacks);
        if (wavResult != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_wav_post_init(pWav);

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. */
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav)
{
    ma_result result;

    result = ma_wav_init_internal(pConfig, pWav);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_WAV)
    {
        ma_bool32 wavResult;

        wavResult = ma_dr_wav_init_file(&pWav->dr, pFilePath, pAllocationCallbacks);
        if (wavResult != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_wav_post_init(pWav);

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_init_file_w(const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav)
{
    ma_result result;

    result = ma_wav_init_internal(pConfig, pWav);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_WAV)
    {
        ma_bool32 wavResult;

        wavResult = ma_dr_wav_init_file_w(&pWav->dr, pFilePath, pAllocationCallbacks);
        if (wavResult != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_wav_post_init(pWav);

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_wav* pWav)
{
    ma_result result;

    result = ma_wav_init_internal(pConfig, pWav);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_WAV)
    {
        ma_bool32 wavResult;

        wavResult = ma_dr_wav_init_memory(&pWav->dr, pData, dataSize, pAllocationCallbacks);
        if (wavResult != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_wav_post_init(pWav);

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. */
        (void)pData;
        (void)dataSize;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API void ma_wav_uninit(ma_wav* pWav, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pWav == NULL) {
        return;
    }

    (void)pAllocationCallbacks;

    #if !defined(MA_NO_WAV)
    {
        ma_dr_wav_uninit(&pWav->dr);
    }
    #else
    {
        /* wav is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
    }
    #endif

    ma_data_source_uninit(&pWav->ds);
}

MA_API ma_result ma_wav_read_pcm_frames(ma_wav* pWav, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_WAV)
    {
        /* We always use floating point format. */
        ma_result result = MA_SUCCESS;  /* Must be initialized to MA_SUCCESS. */
        ma_uint64 totalFramesRead = 0;
        ma_format format;

        ma_wav_get_data_format(pWav, &format, NULL, NULL, NULL, 0);

        switch (format)
        {
            case ma_format_f32:
            {
                totalFramesRead = ma_dr_wav_read_pcm_frames_f32(&pWav->dr, frameCount, (float*)pFramesOut);
            } break;

            case ma_format_s16:
            {
                totalFramesRead = ma_dr_wav_read_pcm_frames_s16(&pWav->dr, frameCount, (ma_int16*)pFramesOut);
            } break;

            case ma_format_s32:
            {
                totalFramesRead = ma_dr_wav_read_pcm_frames_s32(&pWav->dr, frameCount, (ma_int32*)pFramesOut);
            } break;

            /* Fallback to a raw read. */
            case ma_format_unknown: return MA_INVALID_OPERATION; /* <-- this should never be hit because initialization would just fall back to a supported format. */
            default:
            {
                totalFramesRead = ma_dr_wav_read_pcm_frames(&pWav->dr, frameCount, pFramesOut);
            } break;
        }

        /* In the future we'll update ma_dr_wav to return MA_AT_END for us. */
        if (totalFramesRead == 0) {
            result = MA_AT_END;
        }

        if (pFramesRead != NULL) {
            *pFramesRead = totalFramesRead;
        }

        if (result == MA_SUCCESS && totalFramesRead == 0) {
            result  = MA_AT_END;
        }

        return result;
    }
    #else
    {
        /* wav is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)pFramesOut;
        (void)frameCount;
        (void)pFramesRead;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_seek_to_pcm_frame(ma_wav* pWav, ma_uint64 frameIndex)
{
    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_WAV)
    {
        ma_bool32 wavResult;

        wavResult = ma_dr_wav_seek_to_pcm_frame(&pWav->dr, frameIndex);
        if (wavResult != MA_TRUE) {
            return MA_ERROR;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)frameIndex;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_get_data_format(ma_wav* pWav, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    /* Defaults for safety. */
    if (pFormat != NULL) {
        *pFormat = ma_format_unknown;
    }
    if (pChannels != NULL) {
        *pChannels = 0;
    }
    if (pSampleRate != NULL) {
        *pSampleRate = 0;
    }
    if (pChannelMap != NULL) {
        MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channelMapCap);
    }

    if (pWav == NULL) {
        return MA_INVALID_OPERATION;
    }

    if (pFormat != NULL) {
        *pFormat = pWav->format;
    }

    #if !defined(MA_NO_WAV)
    {
        if (pChannels != NULL) {
            *pChannels = pWav->dr.channels;
        }

        if (pSampleRate != NULL) {
            *pSampleRate = pWav->dr.sampleRate;
        }

        if (pChannelMap != NULL) {
            ma_channel_map_init_standard(ma_standard_channel_map_microsoft, pChannelMap, channelMapCap, pWav->dr.channels);
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_get_cursor_in_pcm_frames(ma_wav* pWav, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;   /* Safety. */

    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_WAV)
    {
        ma_result wavResult = ma_dr_wav_get_cursor_in_pcm_frames(&pWav->dr, pCursor);
        if (wavResult != MA_SUCCESS) {
            return (ma_result)wavResult;    /* ma_dr_wav result codes map to miniaudio's. */
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_wav_get_length_in_pcm_frames(ma_wav* pWav, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;   /* Safety. */

    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_WAV)
    {
        ma_result wavResult = ma_dr_wav_get_length_in_pcm_frames(&pWav->dr, pLength);
        if (wavResult != MA_SUCCESS) {
            return (ma_result)wavResult;    /* ma_dr_wav result codes map to miniaudio's. */
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* wav is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}


static ma_result ma_decoding_backend_init__wav(void* pUserData, ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_wav* pWav;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pWav = (ma_wav*)ma_malloc(sizeof(*pWav), pAllocationCallbacks);
    if (pWav == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_wav_init(onRead, onSeek, onTell, pReadSeekTellUserData, pConfig, pAllocationCallbacks, pWav);
    if (result != MA_SUCCESS) {
        ma_free(pWav, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pWav;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file__wav(void* pUserData, const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_wav* pWav;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pWav = (ma_wav*)ma_malloc(sizeof(*pWav), pAllocationCallbacks);
    if (pWav == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_wav_init_file(pFilePath, pConfig, pAllocationCallbacks, pWav);
    if (result != MA_SUCCESS) {
        ma_free(pWav, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pWav;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file_w__wav(void* pUserData, const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_wav* pWav;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pWav = (ma_wav*)ma_malloc(sizeof(*pWav), pAllocationCallbacks);
    if (pWav == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_wav_init_file_w(pFilePath, pConfig, pAllocationCallbacks, pWav);
    if (result != MA_SUCCESS) {
        ma_free(pWav, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pWav;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_memory__wav(void* pUserData, const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_wav* pWav;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pWav = (ma_wav*)ma_malloc(sizeof(*pWav), pAllocationCallbacks);
    if (pWav == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_wav_init_memory(pData, dataSize, pConfig, pAllocationCallbacks, pWav);
    if (result != MA_SUCCESS) {
        ma_free(pWav, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pWav;

    return MA_SUCCESS;
}

static void ma_decoding_backend_uninit__wav(void* pUserData, ma_data_source* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_wav* pWav = (ma_wav*)pBackend;

    (void)pUserData;

    ma_wav_uninit(pWav, pAllocationCallbacks);
    ma_free(pWav, pAllocationCallbacks);
}

static ma_decoding_backend_vtable g_ma_decoding_backend_vtable_wav =
{
    ma_decoding_backend_init__wav,
    ma_decoding_backend_init_file__wav,
    ma_decoding_backend_init_file_w__wav,
    ma_decoding_backend_init_memory__wav,
    ma_decoding_backend_uninit__wav
};

static ma_result ma_decoder_init_wav__internal(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_vtable__internal(&g_ma_decoding_backend_vtable_wav, NULL, pConfig, pDecoder);
}

static ma_result ma_decoder_init_wav_from_file__internal(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file__internal(&g_ma_decoding_backend_vtable_wav, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_wav_from_file_w__internal(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file_w__internal(&g_ma_decoding_backend_vtable_wav, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_wav_from_memory__internal(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_memory__internal(&g_ma_decoding_backend_vtable_wav, NULL, pData, dataSize, pConfig, pDecoder);
}
#endif  /* ma_dr_wav_h */

/* FLAC */
#ifdef ma_dr_flac_h
#define MA_HAS_FLAC

typedef struct
{
    ma_data_source_base ds;
    ma_read_proc onRead;
    ma_seek_proc onSeek;
    ma_tell_proc onTell;
    void* pReadSeekTellUserData;
    ma_format format;           /* Can be f32, s16 or s32. */
#if !defined(MA_NO_FLAC)
    ma_dr_flac* dr;
#endif
} ma_flac;

MA_API ma_result ma_flac_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac);
MA_API ma_result ma_flac_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac);
MA_API ma_result ma_flac_init_file_w(const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac);
MA_API ma_result ma_flac_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac);
MA_API void ma_flac_uninit(ma_flac* pFlac, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_result ma_flac_read_pcm_frames(ma_flac* pFlac, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead);
MA_API ma_result ma_flac_seek_to_pcm_frame(ma_flac* pFlac, ma_uint64 frameIndex);
MA_API ma_result ma_flac_get_data_format(ma_flac* pFlac, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
MA_API ma_result ma_flac_get_cursor_in_pcm_frames(ma_flac* pFlac, ma_uint64* pCursor);
MA_API ma_result ma_flac_get_length_in_pcm_frames(ma_flac* pFlac, ma_uint64* pLength);


static ma_result ma_flac_ds_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_flac_read_pcm_frames((ma_flac*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_flac_ds_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_flac_seek_to_pcm_frame((ma_flac*)pDataSource, frameIndex);
}

static ma_result ma_flac_ds_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_flac_get_data_format((ma_flac*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_flac_ds_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_flac_get_cursor_in_pcm_frames((ma_flac*)pDataSource, pCursor);
}

static ma_result ma_flac_ds_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_flac_get_length_in_pcm_frames((ma_flac*)pDataSource, pLength);
}

static ma_data_source_vtable g_ma_flac_ds_vtable =
{
    ma_flac_ds_read,
    ma_flac_ds_seek,
    ma_flac_ds_get_data_format,
    ma_flac_ds_get_cursor,
    ma_flac_ds_get_length,
    NULL,   /* onSetLooping */
    0
};


#if !defined(MA_NO_FLAC)
static size_t ma_flac_dr_callback__read(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    ma_flac* pFlac = (ma_flac*)pUserData;
    ma_result result;
    size_t bytesRead;

    MA_ASSERT(pFlac != NULL);

    result = pFlac->onRead(pFlac->pReadSeekTellUserData, pBufferOut, bytesToRead, &bytesRead);
    (void)result;

    return bytesRead;
}

static ma_bool32 ma_flac_dr_callback__seek(void* pUserData, int offset, ma_dr_flac_seek_origin origin)
{
    ma_flac* pFlac = (ma_flac*)pUserData;
    ma_result result;
    ma_seek_origin maSeekOrigin;

    MA_ASSERT(pFlac != NULL);

    maSeekOrigin = ma_seek_origin_start;
    if (origin == ma_dr_flac_seek_origin_current) {
        maSeekOrigin =  ma_seek_origin_current;
    }

    result = pFlac->onSeek(pFlac->pReadSeekTellUserData, offset, maSeekOrigin);
    if (result != MA_SUCCESS) {
        return MA_FALSE;
    }

    return MA_TRUE;
}
#endif

static ma_result ma_flac_init_internal(const ma_decoding_backend_config* pConfig, ma_flac* pFlac)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    if (pFlac == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pFlac);
    pFlac->format = ma_format_f32;    /* f32 by default. */

    if (pConfig != NULL && (pConfig->preferredFormat == ma_format_f32 || pConfig->preferredFormat == ma_format_s16 || pConfig->preferredFormat == ma_format_s32)) {
        pFlac->format = pConfig->preferredFormat;
    } else {
        /* Getting here means something other than f32 and s16 was specified. Just leave this unset to use the default format. */
    }

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_flac_ds_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pFlac->ds);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the base data source. */
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_flac_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac)
{
    ma_result result;

    result = ma_flac_init_internal(pConfig, pFlac);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (onRead == NULL || onSeek == NULL) {
        return MA_INVALID_ARGS; /* onRead and onSeek are mandatory. */
    }

    pFlac->onRead = onRead;
    pFlac->onSeek = onSeek;
    pFlac->onTell = onTell;
    pFlac->pReadSeekTellUserData = pReadSeekTellUserData;

    #if !defined(MA_NO_FLAC)
    {
        pFlac->dr = ma_dr_flac_open(ma_flac_dr_callback__read, ma_flac_dr_callback__seek, pFlac, pAllocationCallbacks);
        if (pFlac->dr == NULL) {
            return MA_INVALID_FILE;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. */
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac)
{
    ma_result result;

    result = ma_flac_init_internal(pConfig, pFlac);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_FLAC)
    {
        pFlac->dr = ma_dr_flac_open_file(pFilePath, pAllocationCallbacks);
        if (pFlac->dr == NULL) {
            return MA_INVALID_FILE;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_init_file_w(const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac)
{
    ma_result result;

    result = ma_flac_init_internal(pConfig, pFlac);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_FLAC)
    {
        pFlac->dr = ma_dr_flac_open_file_w(pFilePath, pAllocationCallbacks);
        if (pFlac->dr == NULL) {
            return MA_INVALID_FILE;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_flac* pFlac)
{
    ma_result result;

    result = ma_flac_init_internal(pConfig, pFlac);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_FLAC)
    {
        pFlac->dr = ma_dr_flac_open_memory(pData, dataSize, pAllocationCallbacks);
        if (pFlac->dr == NULL) {
            return MA_INVALID_FILE;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. */
        (void)pData;
        (void)dataSize;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API void ma_flac_uninit(ma_flac* pFlac, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFlac == NULL) {
        return;
    }

    (void)pAllocationCallbacks;

    #if !defined(MA_NO_FLAC)
    {
        ma_dr_flac_close(pFlac->dr);
    }
    #else
    {
        /* flac is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
    }
    #endif

    ma_data_source_uninit(&pFlac->ds);
}

MA_API ma_result ma_flac_read_pcm_frames(ma_flac* pFlac, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pFlac == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_FLAC)
    {
        /* We always use floating point format. */
        ma_result result = MA_SUCCESS;  /* Must be initialized to MA_SUCCESS. */
        ma_uint64 totalFramesRead = 0;
        ma_format format;

        ma_flac_get_data_format(pFlac, &format, NULL, NULL, NULL, 0);

        switch (format)
        {
            case ma_format_f32:
            {
                totalFramesRead = ma_dr_flac_read_pcm_frames_f32(pFlac->dr, frameCount, (float*)pFramesOut);
            } break;

            case ma_format_s16:
            {
                totalFramesRead = ma_dr_flac_read_pcm_frames_s16(pFlac->dr, frameCount, (ma_int16*)pFramesOut);
            } break;

            case ma_format_s32:
            {
                totalFramesRead = ma_dr_flac_read_pcm_frames_s32(pFlac->dr, frameCount, (ma_int32*)pFramesOut);
            } break;

            case ma_format_u8:
            case ma_format_s24:
            case ma_format_unknown:
            default:
            {
                return MA_INVALID_OPERATION;
            };
        }

        /* In the future we'll update ma_dr_flac to return MA_AT_END for us. */
        if (totalFramesRead == 0) {
            result = MA_AT_END;
        }

        if (pFramesRead != NULL) {
            *pFramesRead = totalFramesRead;
        }

        if (result == MA_SUCCESS && totalFramesRead == 0) {
            result  = MA_AT_END;
        }

        return result;
    }
    #else
    {
        /* flac is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)pFramesOut;
        (void)frameCount;
        (void)pFramesRead;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_seek_to_pcm_frame(ma_flac* pFlac, ma_uint64 frameIndex)
{
    if (pFlac == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_FLAC)
    {
        ma_bool32 flacResult;

        flacResult = ma_dr_flac_seek_to_pcm_frame(pFlac->dr, frameIndex);
        if (flacResult != MA_TRUE) {
            return MA_ERROR;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)frameIndex;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_get_data_format(ma_flac* pFlac, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    /* Defaults for safety. */
    if (pFormat != NULL) {
        *pFormat = ma_format_unknown;
    }
    if (pChannels != NULL) {
        *pChannels = 0;
    }
    if (pSampleRate != NULL) {
        *pSampleRate = 0;
    }
    if (pChannelMap != NULL) {
        MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channelMapCap);
    }

    if (pFlac == NULL) {
        return MA_INVALID_OPERATION;
    }

    if (pFormat != NULL) {
        *pFormat = pFlac->format;
    }

    #if !defined(MA_NO_FLAC)
    {
        if (pChannels != NULL) {
            *pChannels = pFlac->dr->channels;
        }

        if (pSampleRate != NULL) {
            *pSampleRate = pFlac->dr->sampleRate;
        }

        if (pChannelMap != NULL) {
            ma_channel_map_init_standard(ma_standard_channel_map_microsoft, pChannelMap, channelMapCap, pFlac->dr->channels);
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_get_cursor_in_pcm_frames(ma_flac* pFlac, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;   /* Safety. */

    if (pFlac == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_FLAC)
    {
        *pCursor = pFlac->dr->currentPCMFrame;

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_flac_get_length_in_pcm_frames(ma_flac* pFlac, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;   /* Safety. */

    if (pFlac == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_FLAC)
    {
        *pLength = pFlac->dr->totalPCMFrameCount;

        return MA_SUCCESS;
    }
    #else
    {
        /* flac is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}


static ma_result ma_decoding_backend_init__flac(void* pUserData, ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_flac* pFlac;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pFlac = (ma_flac*)ma_malloc(sizeof(*pFlac), pAllocationCallbacks);
    if (pFlac == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_flac_init(onRead, onSeek, onTell, pReadSeekTellUserData, pConfig, pAllocationCallbacks, pFlac);
    if (result != MA_SUCCESS) {
        ma_free(pFlac, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pFlac;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file__flac(void* pUserData, const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_flac* pFlac;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pFlac = (ma_flac*)ma_malloc(sizeof(*pFlac), pAllocationCallbacks);
    if (pFlac == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_flac_init_file(pFilePath, pConfig, pAllocationCallbacks, pFlac);
    if (result != MA_SUCCESS) {
        ma_free(pFlac, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pFlac;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file_w__flac(void* pUserData, const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_flac* pFlac;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pFlac = (ma_flac*)ma_malloc(sizeof(*pFlac), pAllocationCallbacks);
    if (pFlac == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_flac_init_file_w(pFilePath, pConfig, pAllocationCallbacks, pFlac);
    if (result != MA_SUCCESS) {
        ma_free(pFlac, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pFlac;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_memory__flac(void* pUserData, const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_flac* pFlac;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pFlac = (ma_flac*)ma_malloc(sizeof(*pFlac), pAllocationCallbacks);
    if (pFlac == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_flac_init_memory(pData, dataSize, pConfig, pAllocationCallbacks, pFlac);
    if (result != MA_SUCCESS) {
        ma_free(pFlac, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pFlac;

    return MA_SUCCESS;
}

static void ma_decoding_backend_uninit__flac(void* pUserData, ma_data_source* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_flac* pFlac = (ma_flac*)pBackend;

    (void)pUserData;

    ma_flac_uninit(pFlac, pAllocationCallbacks);
    ma_free(pFlac, pAllocationCallbacks);
}

static ma_decoding_backend_vtable g_ma_decoding_backend_vtable_flac =
{
    ma_decoding_backend_init__flac,
    ma_decoding_backend_init_file__flac,
    ma_decoding_backend_init_file_w__flac,
    ma_decoding_backend_init_memory__flac,
    ma_decoding_backend_uninit__flac
};

static ma_result ma_decoder_init_flac__internal(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_vtable__internal(&g_ma_decoding_backend_vtable_flac, NULL, pConfig, pDecoder);
}

static ma_result ma_decoder_init_flac_from_file__internal(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file__internal(&g_ma_decoding_backend_vtable_flac, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_flac_from_file_w__internal(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file_w__internal(&g_ma_decoding_backend_vtable_flac, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_flac_from_memory__internal(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_memory__internal(&g_ma_decoding_backend_vtable_flac, NULL, pData, dataSize, pConfig, pDecoder);
}
#endif  /* ma_dr_flac_h */

/* MP3 */
#ifdef ma_dr_mp3_h
#define MA_HAS_MP3

typedef struct
{
    ma_data_source_base ds;
    ma_read_proc onRead;
    ma_seek_proc onSeek;
    ma_tell_proc onTell;
    void* pReadSeekTellUserData;
    ma_format format;           /* Can be f32 or s16. */
#if !defined(MA_NO_MP3)
    ma_dr_mp3 dr;
    ma_uint32 seekPointCount;
    ma_dr_mp3_seek_point* pSeekPoints;  /* Only used if seek table generation is used. */
#endif
} ma_mp3;

MA_API ma_result ma_mp3_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3);
MA_API ma_result ma_mp3_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3);
MA_API ma_result ma_mp3_init_file_w(const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3);
MA_API ma_result ma_mp3_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3);
MA_API void ma_mp3_uninit(ma_mp3* pMP3, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_result ma_mp3_read_pcm_frames(ma_mp3* pMP3, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead);
MA_API ma_result ma_mp3_seek_to_pcm_frame(ma_mp3* pMP3, ma_uint64 frameIndex);
MA_API ma_result ma_mp3_get_data_format(ma_mp3* pMP3, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
MA_API ma_result ma_mp3_get_cursor_in_pcm_frames(ma_mp3* pMP3, ma_uint64* pCursor);
MA_API ma_result ma_mp3_get_length_in_pcm_frames(ma_mp3* pMP3, ma_uint64* pLength);


static ma_result ma_mp3_ds_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_mp3_read_pcm_frames((ma_mp3*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_mp3_ds_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_mp3_seek_to_pcm_frame((ma_mp3*)pDataSource, frameIndex);
}

static ma_result ma_mp3_ds_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_mp3_get_data_format((ma_mp3*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_mp3_ds_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_mp3_get_cursor_in_pcm_frames((ma_mp3*)pDataSource, pCursor);
}

static ma_result ma_mp3_ds_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_mp3_get_length_in_pcm_frames((ma_mp3*)pDataSource, pLength);
}

static ma_data_source_vtable g_ma_mp3_ds_vtable =
{
    ma_mp3_ds_read,
    ma_mp3_ds_seek,
    ma_mp3_ds_get_data_format,
    ma_mp3_ds_get_cursor,
    ma_mp3_ds_get_length,
    NULL,   /* onSetLooping */
    0
};


#if !defined(MA_NO_MP3)
static size_t ma_mp3_dr_callback__read(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    ma_mp3* pMP3 = (ma_mp3*)pUserData;
    ma_result result;
    size_t bytesRead;

    MA_ASSERT(pMP3 != NULL);

    result = pMP3->onRead(pMP3->pReadSeekTellUserData, pBufferOut, bytesToRead, &bytesRead);
    (void)result;

    return bytesRead;
}

static ma_bool32 ma_mp3_dr_callback__seek(void* pUserData, int offset, ma_dr_mp3_seek_origin origin)
{
    ma_mp3* pMP3 = (ma_mp3*)pUserData;
    ma_result result;
    ma_seek_origin maSeekOrigin;

    MA_ASSERT(pMP3 != NULL);

    maSeekOrigin = ma_seek_origin_start;
    if (origin == ma_dr_mp3_seek_origin_current) {
        maSeekOrigin =  ma_seek_origin_current;
    }

    result = pMP3->onSeek(pMP3->pReadSeekTellUserData, offset, maSeekOrigin);
    if (result != MA_SUCCESS) {
        return MA_FALSE;
    }

    return MA_TRUE;
}
#endif

static ma_result ma_mp3_init_internal(const ma_decoding_backend_config* pConfig, ma_mp3* pMP3)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    if (pMP3 == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pMP3);
    pMP3->format = ma_format_f32;    /* f32 by default. */

    if (pConfig != NULL && (pConfig->preferredFormat == ma_format_f32 || pConfig->preferredFormat == ma_format_s16)) {
        pMP3->format = pConfig->preferredFormat;
    } else {
        /* Getting here means something other than f32 and s16 was specified. Just leave this unset to use the default format. */
    }

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_mp3_ds_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pMP3->ds);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the base data source. */
    }

    return MA_SUCCESS;
}

static ma_result ma_mp3_generate_seek_table(ma_mp3* pMP3, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_bool32 mp3Result;
    ma_uint32 seekPointCount = 0;
    ma_dr_mp3_seek_point* pSeekPoints = NULL;

    MA_ASSERT(pMP3    != NULL);
    MA_ASSERT(pConfig != NULL);

    seekPointCount = pConfig->seekPointCount;
    if (seekPointCount > 0) {
        pSeekPoints = (ma_dr_mp3_seek_point*)ma_malloc(sizeof(*pMP3->pSeekPoints) * seekPointCount, pAllocationCallbacks);
        if (pSeekPoints == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    }

    mp3Result = ma_dr_mp3_calculate_seek_points(&pMP3->dr, &seekPointCount, pSeekPoints);
    if (mp3Result != MA_TRUE) {
        ma_free(pSeekPoints, pAllocationCallbacks);
        return MA_ERROR;
    }

    mp3Result = ma_dr_mp3_bind_seek_table(&pMP3->dr, seekPointCount, pSeekPoints);
    if (mp3Result != MA_TRUE) {
        ma_free(pSeekPoints, pAllocationCallbacks);
        return MA_ERROR;
    }

    pMP3->seekPointCount = seekPointCount;
    pMP3->pSeekPoints    = pSeekPoints;

    return MA_SUCCESS;
}

static ma_result ma_mp3_post_init(ma_mp3* pMP3, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_result result;

    result = ma_mp3_generate_seek_table(pMP3, pConfig, pAllocationCallbacks);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_mp3_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3)
{
    ma_result result;

    result = ma_mp3_init_internal(pConfig, pMP3);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (onRead == NULL || onSeek == NULL) {
        return MA_INVALID_ARGS; /* onRead and onSeek are mandatory. */
    }

    pMP3->onRead = onRead;
    pMP3->onSeek = onSeek;
    pMP3->onTell = onTell;
    pMP3->pReadSeekTellUserData = pReadSeekTellUserData;

    #if !defined(MA_NO_MP3)
    {
        ma_bool32 mp3Result;

        mp3Result = ma_dr_mp3_init(&pMP3->dr, ma_mp3_dr_callback__read, ma_mp3_dr_callback__seek, pMP3, pAllocationCallbacks);
        if (mp3Result != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_mp3_post_init(pMP3, pConfig, pAllocationCallbacks);

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. */
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3)
{
    ma_result result;

    result = ma_mp3_init_internal(pConfig, pMP3);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_MP3)
    {
        ma_bool32 mp3Result;

        mp3Result = ma_dr_mp3_init_file(&pMP3->dr, pFilePath, pAllocationCallbacks);
        if (mp3Result != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_mp3_post_init(pMP3, pConfig, pAllocationCallbacks);

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_init_file_w(const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3)
{
    ma_result result;

    result = ma_mp3_init_internal(pConfig, pMP3);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_MP3)
    {
        ma_bool32 mp3Result;

        mp3Result = ma_dr_mp3_init_file_w(&pMP3->dr, pFilePath, pAllocationCallbacks);
        if (mp3Result != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_mp3_post_init(pMP3, pConfig, pAllocationCallbacks);

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_mp3* pMP3)
{
    ma_result result;

    result = ma_mp3_init_internal(pConfig, pMP3);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_MP3)
    {
        ma_bool32 mp3Result;

        mp3Result = ma_dr_mp3_init_memory(&pMP3->dr, pData, dataSize, pAllocationCallbacks);
        if (mp3Result != MA_TRUE) {
            return MA_INVALID_FILE;
        }

        ma_mp3_post_init(pMP3, pConfig, pAllocationCallbacks);

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. */
        (void)pData;
        (void)dataSize;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API void ma_mp3_uninit(ma_mp3* pMP3, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pMP3 == NULL) {
        return;
    }

    #if !defined(MA_NO_MP3)
    {
        ma_dr_mp3_uninit(&pMP3->dr);
    }
    #else
    {
        /* mp3 is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
    }
    #endif

    /* Seek points need to be freed after the MP3 decoder has been uninitialized to ensure they're no longer being referenced. */
    ma_free(pMP3->pSeekPoints, pAllocationCallbacks);

    ma_data_source_uninit(&pMP3->ds);
}

MA_API ma_result ma_mp3_read_pcm_frames(ma_mp3* pMP3, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pMP3 == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_MP3)
    {
        /* We always use floating point format. */
        ma_result result = MA_SUCCESS;  /* Must be initialized to MA_SUCCESS. */
        ma_uint64 totalFramesRead = 0;
        ma_format format;

        ma_mp3_get_data_format(pMP3, &format, NULL, NULL, NULL, 0);

        switch (format)
        {
            case ma_format_f32:
            {
                totalFramesRead = ma_dr_mp3_read_pcm_frames_f32(&pMP3->dr, frameCount, (float*)pFramesOut);
            } break;

            case ma_format_s16:
            {
                totalFramesRead = ma_dr_mp3_read_pcm_frames_s16(&pMP3->dr, frameCount, (ma_int16*)pFramesOut);
            } break;

            case ma_format_u8:
            case ma_format_s24:
            case ma_format_s32:
            case ma_format_unknown:
            default:
            {
                return MA_INVALID_OPERATION;
            };
        }

        /* In the future we'll update ma_dr_mp3 to return MA_AT_END for us. */
        if (totalFramesRead == 0) {
            result = MA_AT_END;
        }

        if (pFramesRead != NULL) {
            *pFramesRead = totalFramesRead;
        }

        return result;
    }
    #else
    {
        /* mp3 is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)pFramesOut;
        (void)frameCount;
        (void)pFramesRead;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_seek_to_pcm_frame(ma_mp3* pMP3, ma_uint64 frameIndex)
{
    if (pMP3 == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_MP3)
    {
        ma_bool32 mp3Result;

        mp3Result = ma_dr_mp3_seek_to_pcm_frame(&pMP3->dr, frameIndex);
        if (mp3Result != MA_TRUE) {
            return MA_ERROR;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)frameIndex;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_get_data_format(ma_mp3* pMP3, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    /* Defaults for safety. */
    if (pFormat != NULL) {
        *pFormat = ma_format_unknown;
    }
    if (pChannels != NULL) {
        *pChannels = 0;
    }
    if (pSampleRate != NULL) {
        *pSampleRate = 0;
    }
    if (pChannelMap != NULL) {
        MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channelMapCap);
    }

    if (pMP3 == NULL) {
        return MA_INVALID_OPERATION;
    }

    if (pFormat != NULL) {
        *pFormat = pMP3->format;
    }

    #if !defined(MA_NO_MP3)
    {
        if (pChannels != NULL) {
            *pChannels = pMP3->dr.channels;
        }

        if (pSampleRate != NULL) {
            *pSampleRate = pMP3->dr.sampleRate;
        }

        if (pChannelMap != NULL) {
            ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pMP3->dr.channels);
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_get_cursor_in_pcm_frames(ma_mp3* pMP3, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;   /* Safety. */

    if (pMP3 == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_MP3)
    {
        *pCursor = pMP3->dr.currentPCMFrame;

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_mp3_get_length_in_pcm_frames(ma_mp3* pMP3, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;   /* Safety. */

    if (pMP3 == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_MP3)
    {
        *pLength = ma_dr_mp3_get_pcm_frame_count(&pMP3->dr);

        return MA_SUCCESS;
    }
    #else
    {
        /* mp3 is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}


static ma_result ma_decoding_backend_init__mp3(void* pUserData, ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_mp3* pMP3;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pMP3 = (ma_mp3*)ma_malloc(sizeof(*pMP3), pAllocationCallbacks);
    if (pMP3 == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_mp3_init(onRead, onSeek, onTell, pReadSeekTellUserData, pConfig, pAllocationCallbacks, pMP3);
    if (result != MA_SUCCESS) {
        ma_free(pMP3, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pMP3;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file__mp3(void* pUserData, const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_mp3* pMP3;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pMP3 = (ma_mp3*)ma_malloc(sizeof(*pMP3), pAllocationCallbacks);
    if (pMP3 == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_mp3_init_file(pFilePath, pConfig, pAllocationCallbacks, pMP3);
    if (result != MA_SUCCESS) {
        ma_free(pMP3, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pMP3;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file_w__mp3(void* pUserData, const wchar_t* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_mp3* pMP3;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pMP3 = (ma_mp3*)ma_malloc(sizeof(*pMP3), pAllocationCallbacks);
    if (pMP3 == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_mp3_init_file_w(pFilePath, pConfig, pAllocationCallbacks, pMP3);
    if (result != MA_SUCCESS) {
        ma_free(pMP3, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pMP3;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_memory__mp3(void* pUserData, const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_mp3* pMP3;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pMP3 = (ma_mp3*)ma_malloc(sizeof(*pMP3), pAllocationCallbacks);
    if (pMP3 == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_mp3_init_memory(pData, dataSize, pConfig, pAllocationCallbacks, pMP3);
    if (result != MA_SUCCESS) {
        ma_free(pMP3, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pMP3;

    return MA_SUCCESS;
}

static void ma_decoding_backend_uninit__mp3(void* pUserData, ma_data_source* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_mp3* pMP3 = (ma_mp3*)pBackend;

    (void)pUserData;

    ma_mp3_uninit(pMP3, pAllocationCallbacks);
    ma_free(pMP3, pAllocationCallbacks);
}

static ma_decoding_backend_vtable g_ma_decoding_backend_vtable_mp3 =
{
    ma_decoding_backend_init__mp3,
    ma_decoding_backend_init_file__mp3,
    ma_decoding_backend_init_file_w__mp3,
    ma_decoding_backend_init_memory__mp3,
    ma_decoding_backend_uninit__mp3
};

static ma_result ma_decoder_init_mp3__internal(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_vtable__internal(&g_ma_decoding_backend_vtable_mp3, NULL, pConfig, pDecoder);
}

static ma_result ma_decoder_init_mp3_from_file__internal(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file__internal(&g_ma_decoding_backend_vtable_mp3, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_mp3_from_file_w__internal(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file_w__internal(&g_ma_decoding_backend_vtable_mp3, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_mp3_from_memory__internal(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_memory__internal(&g_ma_decoding_backend_vtable_mp3, NULL, pData, dataSize, pConfig, pDecoder);
}
#endif  /* ma_dr_mp3_h */

/* Vorbis */
#ifdef STB_VORBIS_INCLUDE_STB_VORBIS_H
#define MA_HAS_VORBIS

/* The size in bytes of each chunk of data to read from the Vorbis stream. */
#define MA_VORBIS_DATA_CHUNK_SIZE  4096

typedef struct
{
    ma_data_source_base ds;
    ma_read_proc onRead;
    ma_seek_proc onSeek;
    ma_tell_proc onTell;
    void* pReadSeekTellUserData;
    ma_allocation_callbacks allocationCallbacks;    /* Store the allocation callbacks within the structure because we may need to dynamically expand a buffer in ma_stbvorbis_read_pcm_frames() when using push mode. */
    ma_format format;               /* Only f32 is allowed with stb_vorbis. */
    ma_uint32 channels;
    ma_uint32 sampleRate;
    ma_uint64 cursor;
#if !defined(MA_NO_VORBIS)
    stb_vorbis* stb;
    ma_bool32 usingPushMode;
    struct
    {
        ma_uint8* pData;
        size_t dataSize;
        size_t dataCapacity;
        size_t audioStartOffsetInBytes;
        ma_uint32 framesConsumed;   /* The number of frames consumed in ppPacketData. */
        ma_uint32 framesRemaining;  /* The number of frames remaining in ppPacketData. */
        float** ppPacketData;
    } push;
#endif
} ma_stbvorbis;

MA_API ma_result ma_stbvorbis_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_stbvorbis* pVorbis);
MA_API ma_result ma_stbvorbis_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_stbvorbis* pVorbis);
MA_API ma_result ma_stbvorbis_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_stbvorbis* pVorbis);
MA_API void ma_stbvorbis_uninit(ma_stbvorbis* pVorbis, const ma_allocation_callbacks* pAllocationCallbacks);
MA_API ma_result ma_stbvorbis_read_pcm_frames(ma_stbvorbis* pVorbis, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead);
MA_API ma_result ma_stbvorbis_seek_to_pcm_frame(ma_stbvorbis* pVorbis, ma_uint64 frameIndex);
MA_API ma_result ma_stbvorbis_get_data_format(ma_stbvorbis* pVorbis, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap);
MA_API ma_result ma_stbvorbis_get_cursor_in_pcm_frames(ma_stbvorbis* pVorbis, ma_uint64* pCursor);
MA_API ma_result ma_stbvorbis_get_length_in_pcm_frames(ma_stbvorbis* pVorbis, ma_uint64* pLength);


static ma_result ma_stbvorbis_ds_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_stbvorbis_read_pcm_frames((ma_stbvorbis*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_stbvorbis_ds_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_stbvorbis_seek_to_pcm_frame((ma_stbvorbis*)pDataSource, frameIndex);
}

static ma_result ma_stbvorbis_ds_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_stbvorbis_get_data_format((ma_stbvorbis*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_stbvorbis_ds_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_stbvorbis_get_cursor_in_pcm_frames((ma_stbvorbis*)pDataSource, pCursor);
}

static ma_result ma_stbvorbis_ds_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_stbvorbis_get_length_in_pcm_frames((ma_stbvorbis*)pDataSource, pLength);
}

static ma_data_source_vtable g_ma_stbvorbis_ds_vtable =
{
    ma_stbvorbis_ds_read,
    ma_stbvorbis_ds_seek,
    ma_stbvorbis_ds_get_data_format,
    ma_stbvorbis_ds_get_cursor,
    ma_stbvorbis_ds_get_length,
    NULL,   /* onSetLooping */
    0
};


static ma_result ma_stbvorbis_init_internal(const ma_decoding_backend_config* pConfig, ma_stbvorbis* pVorbis)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    (void)pConfig;

    if (pVorbis == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pVorbis);
    pVorbis->format = ma_format_f32;    /* Only supporting f32. */

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_stbvorbis_ds_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pVorbis->ds);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the base data source. */
    }

    return MA_SUCCESS;
}

#if !defined(MA_NO_VORBIS)
static ma_result ma_stbvorbis_post_init(ma_stbvorbis* pVorbis)
{
    stb_vorbis_info info;

    MA_ASSERT(pVorbis != NULL);

    info = stb_vorbis_get_info(pVorbis->stb);

    pVorbis->channels   = info.channels;
    pVorbis->sampleRate = info.sample_rate;

    return MA_SUCCESS;
}

static ma_result ma_stbvorbis_init_internal_decoder_push(ma_stbvorbis* pVorbis)
{
    ma_result result;
    stb_vorbis* stb;
    size_t dataSize = 0;
    size_t dataCapacity = 0;
    ma_uint8* pData = NULL; /* <-- Must be initialized to NULL. */

    for (;;) {
        int vorbisError;
        int consumedDataSize;   /* <-- Fill by stb_vorbis_open_pushdata(). */
        size_t bytesRead;
        ma_uint8* pNewData;

        /* Allocate memory for the new chunk. */
        dataCapacity += MA_VORBIS_DATA_CHUNK_SIZE;
        pNewData = (ma_uint8*)ma_realloc(pData, dataCapacity, &pVorbis->allocationCallbacks);
        if (pNewData == NULL) {
            ma_free(pData, &pVorbis->allocationCallbacks);
            return MA_OUT_OF_MEMORY;
        }

        pData = pNewData;

        /* Read in the next chunk. */
        result = pVorbis->onRead(pVorbis->pReadSeekTellUserData, ma_offset_ptr(pData, dataSize), (dataCapacity - dataSize), &bytesRead);
        dataSize += bytesRead;

        if (result != MA_SUCCESS) {
            ma_free(pData, &pVorbis->allocationCallbacks);
            return result;
        }

        /* We have a maximum of 31 bits with stb_vorbis. */
        if (dataSize > INT_MAX) {
            ma_free(pData, &pVorbis->allocationCallbacks);
            return MA_TOO_BIG;
        }

        stb = stb_vorbis_open_pushdata(pData, (int)dataSize, &consumedDataSize, &vorbisError, NULL);
        if (stb != NULL) {
            /*
            Successfully opened the Vorbis decoder. We might have some leftover unprocessed
            data so we'll need to move that down to the front.
            */
            dataSize -= (size_t)consumedDataSize;   /* Consume the data. */
            MA_MOVE_MEMORY(pData, ma_offset_ptr(pData, consumedDataSize), dataSize);

            /*
            We need to track the start point so we can seek back to the start of the audio
            data when seeking.
            */
            pVorbis->push.audioStartOffsetInBytes = consumedDataSize;

            break;
        } else {
            /* Failed to open the decoder. */
            if (vorbisError == VORBIS_need_more_data) {
                continue;
            } else {
                ma_free(pData, &pVorbis->allocationCallbacks);
                return MA_ERROR;   /* Failed to open the stb_vorbis decoder. */
            }
        }
    }

    MA_ASSERT(stb != NULL);
    pVorbis->stb = stb;
    pVorbis->push.pData = pData;
    pVorbis->push.dataSize = dataSize;
    pVorbis->push.dataCapacity = dataCapacity;

    return MA_SUCCESS;
}
#endif

MA_API ma_result ma_stbvorbis_init(ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_stbvorbis* pVorbis)
{
    ma_result result;

    result = ma_stbvorbis_init_internal(pConfig, pVorbis);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (onRead == NULL || onSeek == NULL) {
        return MA_INVALID_ARGS; /* onRead and onSeek are mandatory. */
    }

    pVorbis->onRead = onRead;
    pVorbis->onSeek = onSeek;
    pVorbis->onTell = onTell;
    pVorbis->pReadSeekTellUserData = pReadSeekTellUserData;
    ma_allocation_callbacks_init_copy(&pVorbis->allocationCallbacks, pAllocationCallbacks);

    #if !defined(MA_NO_VORBIS)
    {
        /*
        stb_vorbis lacks a callback based API for its pulling API which means we're stuck with the
        pushing API. In order for us to be able to successfully initialize the decoder we need to
        supply it with enough data. We need to keep loading data until we have enough.
        */
        result = ma_stbvorbis_init_internal_decoder_push(pVorbis);
        if (result != MA_SUCCESS) {
            return result;
        }

        pVorbis->usingPushMode = MA_TRUE;

        result = ma_stbvorbis_post_init(pVorbis);
        if (result != MA_SUCCESS) {
            stb_vorbis_close(pVorbis->stb);
            ma_free(pVorbis->push.pData, pAllocationCallbacks);
            return result;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. */
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_stbvorbis_init_file(const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_stbvorbis* pVorbis)
{
    ma_result result;

    result = ma_stbvorbis_init_internal(pConfig, pVorbis);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_VORBIS)
    {
        (void)pAllocationCallbacks; /* Don't know how to make use of this with stb_vorbis. */

        /* We can use stb_vorbis' pull mode for file based streams. */
        pVorbis->stb = stb_vorbis_open_filename(pFilePath, NULL, NULL);
        if (pVorbis->stb == NULL) {
            return MA_INVALID_FILE;
        }

        pVorbis->usingPushMode = MA_FALSE;

        result = ma_stbvorbis_post_init(pVorbis);
        if (result != MA_SUCCESS) {
            stb_vorbis_close(pVorbis->stb);
            return result;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. */
        (void)pFilePath;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_stbvorbis_init_memory(const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_stbvorbis* pVorbis)
{
    ma_result result;

    result = ma_stbvorbis_init_internal(pConfig, pVorbis);
    if (result != MA_SUCCESS) {
        return result;
    }

    #if !defined(MA_NO_VORBIS)
    {
        (void)pAllocationCallbacks;

        /* stb_vorbis uses an int as its size specifier, restricting it to 32-bit even on 64-bit systems. *sigh*. */
        if (dataSize > INT_MAX) {
            return MA_TOO_BIG;
        }

        pVorbis->stb = stb_vorbis_open_memory((const unsigned char*)pData, (int)dataSize, NULL, NULL);
        if (pVorbis->stb == NULL) {
            return MA_INVALID_FILE;
        }

        pVorbis->usingPushMode = MA_FALSE;

        result = ma_stbvorbis_post_init(pVorbis);
        if (result != MA_SUCCESS) {
            stb_vorbis_close(pVorbis->stb);
            return result;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. */
        (void)pData;
        (void)dataSize;
        (void)pAllocationCallbacks;
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API void ma_stbvorbis_uninit(ma_stbvorbis* pVorbis, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pVorbis == NULL) {
        return;
    }

    #if !defined(MA_NO_VORBIS)
    {
        stb_vorbis_close(pVorbis->stb);

        /* We'll have to clear some memory if we're using push mode. */
        if (pVorbis->usingPushMode) {
            ma_free(pVorbis->push.pData, pAllocationCallbacks);
        }
    }
    #else
    {
        /* vorbis is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
    }
    #endif

    ma_data_source_uninit(&pVorbis->ds);
}

MA_API ma_result ma_stbvorbis_read_pcm_frames(ma_stbvorbis* pVorbis, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pVorbis == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_VORBIS)
    {
        /* We always use floating point format. */
        ma_result result = MA_SUCCESS;  /* Must be initialized to MA_SUCCESS. */
        ma_uint64 totalFramesRead = 0;
        ma_format format;
        ma_uint32 channels;

        ma_stbvorbis_get_data_format(pVorbis, &format, &channels, NULL, NULL, 0);

        if (format == ma_format_f32) {
            /* We read differently depending on whether or not we're using push mode. */
            if (pVorbis->usingPushMode) {
                /* Push mode. This is the complex case. */
                float* pFramesOutF32 = (float*)pFramesOut;

                while (totalFramesRead < frameCount) {
                    /* The first thing to do is read from any already-cached frames. */
                    ma_uint32 framesToReadFromCache = (ma_uint32)ma_min(pVorbis->push.framesRemaining, (frameCount - totalFramesRead));  /* Safe cast because pVorbis->framesRemaining is 32-bit. */

                    /* The output pointer can be null in which case we just treat it as a seek. */
                    if (pFramesOut != NULL) {
                        ma_uint64 iFrame;
                        for (iFrame = 0; iFrame < framesToReadFromCache; iFrame += 1) {
                            ma_uint32 iChannel;
                            for (iChannel = 0; iChannel < pVorbis->channels; iChannel += 1) {
                                pFramesOutF32[iChannel] = pVorbis->push.ppPacketData[iChannel][pVorbis->push.framesConsumed + iFrame];
                            }

                            pFramesOutF32 += pVorbis->channels;
                        }
                    }

                    /* Update pointers and counters. */
                    pVorbis->push.framesConsumed  += framesToReadFromCache;
                    pVorbis->push.framesRemaining -= framesToReadFromCache;
                    totalFramesRead               += framesToReadFromCache;

                    /* Don't bother reading any more frames right now if we've just finished loading. */
                    if (totalFramesRead == frameCount) {
                        break;
                    }

                    MA_ASSERT(pVorbis->push.framesRemaining == 0);

                    /* Getting here means we've run out of cached frames. We'll need to load some more. */
                    for (;;) {
                        int samplesRead = 0;
                        int consumedDataSize;

                        /* We need to case dataSize to an int, so make sure we can do it safely. */
                        if (pVorbis->push.dataSize > INT_MAX) {
                            break;  /* Too big. */
                        }

                        consumedDataSize = stb_vorbis_decode_frame_pushdata(pVorbis->stb, pVorbis->push.pData, (int)pVorbis->push.dataSize, NULL, &pVorbis->push.ppPacketData, &samplesRead);
                        if (consumedDataSize != 0) {
                            /* Successfully decoded a Vorbis frame. Consume the data. */
                            pVorbis->push.dataSize -= (size_t)consumedDataSize;
                            MA_MOVE_MEMORY(pVorbis->push.pData, ma_offset_ptr(pVorbis->push.pData, consumedDataSize), pVorbis->push.dataSize);

                            pVorbis->push.framesConsumed  = 0;
                            pVorbis->push.framesRemaining = samplesRead;

                            break;
                        } else {
                            /* Not enough data. Read more. */
                            size_t bytesRead;

                            /* Expand the data buffer if necessary. */
                            if (pVorbis->push.dataCapacity == pVorbis->push.dataSize) {
                                size_t newCap = pVorbis->push.dataCapacity + MA_VORBIS_DATA_CHUNK_SIZE;
                                ma_uint8* pNewData;

                                pNewData = (ma_uint8*)ma_realloc(pVorbis->push.pData, newCap, &pVorbis->allocationCallbacks);
                                if (pNewData == NULL) {
                                    result = MA_OUT_OF_MEMORY;
                                    break;
                                }

                                pVorbis->push.pData = pNewData;
                                pVorbis->push.dataCapacity = newCap;
                            }

                            /* We should have enough room to load some data. */
                            result = pVorbis->onRead(pVorbis->pReadSeekTellUserData, ma_offset_ptr(pVorbis->push.pData, pVorbis->push.dataSize), (pVorbis->push.dataCapacity - pVorbis->push.dataSize), &bytesRead);
                            pVorbis->push.dataSize += bytesRead;

                            if (result != MA_SUCCESS) {
                                break;  /* Failed to read any data. Get out. */
                            }
                        }
                    }

                    /* If we don't have a success code at this point it means we've encountered an error or the end of the file has been reached (probably the latter). */
                    if (result != MA_SUCCESS) {
                        break;
                    }
                }
            } else {
                /* Pull mode. This is the simple case, but we still need to run in a loop because stb_vorbis loves using 32-bit instead of 64-bit. */
                while (totalFramesRead < frameCount) {
                    ma_uint64 framesRemaining = (frameCount - totalFramesRead);
                    int framesRead;

                    if (framesRemaining > INT_MAX) {
                        framesRemaining = INT_MAX;
                    }

                    framesRead = stb_vorbis_get_samples_float_interleaved(pVorbis->stb, channels, (float*)ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, format, channels), (int)framesRemaining * channels);   /* Safe cast. */
                    totalFramesRead += framesRead;

                    if (framesRead < (int)framesRemaining) {
                        break;  /* Nothing left to read. Get out. */
                    }
                }
            }
        } else {
            result = MA_INVALID_ARGS;
        }

        pVorbis->cursor += totalFramesRead;

        if (totalFramesRead == 0) {
            result = MA_AT_END;
        }

        if (pFramesRead != NULL) {
            *pFramesRead = totalFramesRead;
        }

        if (result == MA_SUCCESS && totalFramesRead == 0) {
            result  = MA_AT_END;
        }

        return result;
    }
    #else
    {
        /* vorbis is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)pFramesOut;
        (void)frameCount;
        (void)pFramesRead;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_stbvorbis_seek_to_pcm_frame(ma_stbvorbis* pVorbis, ma_uint64 frameIndex)
{
    if (pVorbis == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_VORBIS)
    {
        /* Different seeking methods depending on whether or not we're using push mode. */
        if (pVorbis->usingPushMode) {
            /* Push mode. This is the complex case. */
            ma_result result;
            float buffer[4096];

            /* If we're seeking backwards, we need to seek back to the start and then brute-force forward. */
            if (frameIndex < pVorbis->cursor) {
                if (frameIndex > 0x7FFFFFFF) {
                    return MA_INVALID_ARGS; /* Trying to seek beyond the 32-bit maximum of stb_vorbis. */
                }

                /*
                This is wildly inefficient due to me having trouble getting sample exact seeking working
                robustly with stb_vorbis_flush_pushdata(). The only way I can think to make this work
                perfectly is to reinitialize the decoder. Note that we only enter this path when seeking
                backwards. This will hopefully be removed once we get our own Vorbis decoder implemented.
                */
                stb_vorbis_close(pVorbis->stb);
                ma_free(pVorbis->push.pData, &pVorbis->allocationCallbacks);

                MA_ZERO_OBJECT(&pVorbis->push);

                /* Seek to the start of the file. */
                result = pVorbis->onSeek(pVorbis->pReadSeekTellUserData, 0, ma_seek_origin_start);
                if (result != MA_SUCCESS) {
                    return result;
                }

                result = ma_stbvorbis_init_internal_decoder_push(pVorbis);
                if (result != MA_SUCCESS) {
                    return result;
                }

                /* At this point we should be sitting on the first frame. */
                pVorbis->cursor = 0;
            }

            /* We're just brute-forcing this for now. */
            while (pVorbis->cursor < frameIndex) {
                ma_uint64 framesRead;
                ma_uint64 framesToRead = ma_countof(buffer)/pVorbis->channels;
                if (framesToRead > (frameIndex - pVorbis->cursor)) {
                    framesToRead = (frameIndex - pVorbis->cursor);
                }

                result = ma_stbvorbis_read_pcm_frames(pVorbis, buffer, framesToRead, &framesRead);
                if (result != MA_SUCCESS) {
                    return result;
                }
            }
        } else {
            /* Pull mode. This is the simple case. */
            int vorbisResult;

            if (frameIndex > UINT_MAX) {
                return MA_INVALID_ARGS; /* Trying to seek beyond the 32-bit maximum of stb_vorbis. */
            }

            vorbisResult = stb_vorbis_seek(pVorbis->stb, (unsigned int)frameIndex);  /* Safe cast. */
            if (vorbisResult == 0) {
                return MA_ERROR;    /* See failed. */
            }

            pVorbis->cursor = frameIndex;
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);

        (void)frameIndex;

        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_stbvorbis_get_data_format(ma_stbvorbis* pVorbis, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    /* Defaults for safety. */
    if (pFormat != NULL) {
        *pFormat = ma_format_unknown;
    }
    if (pChannels != NULL) {
        *pChannels = 0;
    }
    if (pSampleRate != NULL) {
        *pSampleRate = 0;
    }
    if (pChannelMap != NULL) {
        MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channelMapCap);
    }

    if (pVorbis == NULL) {
        return MA_INVALID_OPERATION;
    }

    if (pFormat != NULL) {
        *pFormat = pVorbis->format;
    }

    #if !defined(MA_NO_VORBIS)
    {
        if (pChannels != NULL) {
            *pChannels = pVorbis->channels;
        }

        if (pSampleRate != NULL) {
            *pSampleRate = pVorbis->sampleRate;
        }

        if (pChannelMap != NULL) {
            ma_channel_map_init_standard(ma_standard_channel_map_vorbis, pChannelMap, channelMapCap, pVorbis->channels);
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_stbvorbis_get_cursor_in_pcm_frames(ma_stbvorbis* pVorbis, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;   /* Safety. */

    if (pVorbis == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_VORBIS)
    {
        *pCursor = pVorbis->cursor;

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}

MA_API ma_result ma_stbvorbis_get_length_in_pcm_frames(ma_stbvorbis* pVorbis, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;   /* Safety. */

    if (pVorbis == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_VORBIS)
    {
        if (pVorbis->usingPushMode) {
            *pLength = 0;   /* I don't know of a good way to determine this reliably with stb_vorbis and push mode. */
        } else {
            *pLength = stb_vorbis_stream_length_in_samples(pVorbis->stb);
        }

        return MA_SUCCESS;
    }
    #else
    {
        /* vorbis is disabled. Should never hit this since initialization would have failed. */
        MA_ASSERT(MA_FALSE);
        return MA_NOT_IMPLEMENTED;
    }
    #endif
}


static ma_result ma_decoding_backend_init__stbvorbis(void* pUserData, ma_read_proc onRead, ma_seek_proc onSeek, ma_tell_proc onTell, void* pReadSeekTellUserData, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_stbvorbis* pVorbis;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pVorbis = (ma_stbvorbis*)ma_malloc(sizeof(*pVorbis), pAllocationCallbacks);
    if (pVorbis == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_stbvorbis_init(onRead, onSeek, onTell, pReadSeekTellUserData, pConfig, pAllocationCallbacks, pVorbis);
    if (result != MA_SUCCESS) {
        ma_free(pVorbis, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pVorbis;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_file__stbvorbis(void* pUserData, const char* pFilePath, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_stbvorbis* pVorbis;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pVorbis = (ma_stbvorbis*)ma_malloc(sizeof(*pVorbis), pAllocationCallbacks);
    if (pVorbis == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_stbvorbis_init_file(pFilePath, pConfig, pAllocationCallbacks, pVorbis);
    if (result != MA_SUCCESS) {
        ma_free(pVorbis, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pVorbis;

    return MA_SUCCESS;
}

static ma_result ma_decoding_backend_init_memory__stbvorbis(void* pUserData, const void* pData, size_t dataSize, const ma_decoding_backend_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source** ppBackend)
{
    ma_result result;
    ma_stbvorbis* pVorbis;

    (void)pUserData;    /* For now not using pUserData, but once we start storing the vorbis decoder state within the ma_decoder structure this will be set to the decoder so we can avoid a malloc. */

    /* For now we're just allocating the decoder backend on the heap. */
    pVorbis = (ma_stbvorbis*)ma_malloc(sizeof(*pVorbis), pAllocationCallbacks);
    if (pVorbis == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_stbvorbis_init_memory(pData, dataSize, pConfig, pAllocationCallbacks, pVorbis);
    if (result != MA_SUCCESS) {
        ma_free(pVorbis, pAllocationCallbacks);
        return result;
    }

    *ppBackend = pVorbis;

    return MA_SUCCESS;
}

static void ma_decoding_backend_uninit__stbvorbis(void* pUserData, ma_data_source* pBackend, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_stbvorbis* pVorbis = (ma_stbvorbis*)pBackend;

    (void)pUserData;

    ma_stbvorbis_uninit(pVorbis, pAllocationCallbacks);
    ma_free(pVorbis, pAllocationCallbacks);
}

static ma_decoding_backend_vtable g_ma_decoding_backend_vtable_stbvorbis =
{
    ma_decoding_backend_init__stbvorbis,
    ma_decoding_backend_init_file__stbvorbis,
    NULL, /* onInitFileW() */
    ma_decoding_backend_init_memory__stbvorbis,
    ma_decoding_backend_uninit__stbvorbis
};

static ma_result ma_decoder_init_vorbis__internal(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_vtable__internal(&g_ma_decoding_backend_vtable_stbvorbis, NULL, pConfig, pDecoder);
}

static ma_result ma_decoder_init_vorbis_from_file__internal(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file__internal(&g_ma_decoding_backend_vtable_stbvorbis, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_vorbis_from_file_w__internal(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_file_w__internal(&g_ma_decoding_backend_vtable_stbvorbis, NULL, pFilePath, pConfig, pDecoder);
}

static ma_result ma_decoder_init_vorbis_from_memory__internal(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    return ma_decoder_init_from_memory__internal(&g_ma_decoding_backend_vtable_stbvorbis, NULL, pData, dataSize, pConfig, pDecoder);
}
#endif  /* STB_VORBIS_INCLUDE_STB_VORBIS_H */



static ma_result ma_decoder__init_allocation_callbacks(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    MA_ASSERT(pDecoder != NULL);

    if (pConfig != NULL) {
        return ma_allocation_callbacks_init_copy(&pDecoder->allocationCallbacks, &pConfig->allocationCallbacks);
    } else {
        pDecoder->allocationCallbacks = ma_allocation_callbacks_init_default();
        return MA_SUCCESS;
    }
}

static ma_result ma_decoder__data_source_on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_decoder_read_pcm_frames((ma_decoder*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_decoder__data_source_on_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_decoder_seek_to_pcm_frame((ma_decoder*)pDataSource, frameIndex);
}

static ma_result ma_decoder__data_source_on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_decoder_get_data_format((ma_decoder*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_decoder__data_source_on_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_decoder_get_cursor_in_pcm_frames((ma_decoder*)pDataSource, pCursor);
}

static ma_result ma_decoder__data_source_on_get_length(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_decoder_get_length_in_pcm_frames((ma_decoder*)pDataSource, pLength);
}

static ma_data_source_vtable g_ma_decoder_data_source_vtable =
{
    ma_decoder__data_source_on_read,
    ma_decoder__data_source_on_seek,
    ma_decoder__data_source_on_get_data_format,
    ma_decoder__data_source_on_get_cursor,
    ma_decoder__data_source_on_get_length,
    NULL,   /* onSetLooping */
    0
};

static ma_result ma_decoder__preinit(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, ma_decoder_tell_proc onTell, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    MA_ASSERT(pConfig != NULL);

    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDecoder);

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_decoder_data_source_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pDecoder->ds);
    if (result != MA_SUCCESS) {
        return result;
    }

    pDecoder->onRead    = onRead;
    pDecoder->onSeek    = onSeek;
    pDecoder->onTell    = onTell;
    pDecoder->pUserData = pUserData;

    result = ma_decoder__init_allocation_callbacks(pConfig, pDecoder);
    if (result != MA_SUCCESS) {
        ma_data_source_uninit(&pDecoder->ds);
        return result;
    }

    return MA_SUCCESS;
}

static ma_result ma_decoder__postinit(const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;

    result = ma_decoder__init_data_converter(pDecoder, pConfig);

    /* If we failed post initialization we need to uninitialize the decoder before returning to prevent a memory leak. */
    if (result != MA_SUCCESS) {
        ma_decoder_uninit(pDecoder);
        return result;
    }

    return result;
}


static ma_result ma_decoder_init__internal(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result = MA_NO_BACKEND;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pDecoder != NULL);

    /* Silence some warnings in the case that we don't have any decoder backends enabled. */
    (void)onRead;
    (void)onSeek;
    (void)pUserData;


    /* If we've specified a specific encoding type, try that first. */
    if (pConfig->encodingFormat != ma_encoding_format_unknown) {
    #ifdef MA_HAS_WAV
        if (pConfig->encodingFormat == ma_encoding_format_wav) {
            result = ma_decoder_init_wav__internal(pConfig, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (pConfig->encodingFormat == ma_encoding_format_flac) {
            result = ma_decoder_init_flac__internal(pConfig, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (pConfig->encodingFormat == ma_encoding_format_mp3) {
            result = ma_decoder_init_mp3__internal(pConfig, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (pConfig->encodingFormat == ma_encoding_format_vorbis) {
            result = ma_decoder_init_vorbis__internal(pConfig, pDecoder);
        }
    #endif

        /* If we weren't able to initialize the decoder, seek back to the start to give the next attempts a clean start. */
        if (result != MA_SUCCESS) {
            onSeek(pDecoder, 0, ma_seek_origin_start);
        }
    }

    if (result != MA_SUCCESS) {
        /* Getting here means we couldn't load a specific decoding backend based on the encoding format. */

        /*
        We use trial and error to open a decoder. We prioritize custom decoders so that if they
        implement the same encoding format they take priority over the built-in decoders.
        */
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_custom__internal(pConfig, pDecoder);
            if (result != MA_SUCCESS) {
                onSeek(pDecoder, 0, ma_seek_origin_start);
            }
        }

        /*
        If we get to this point and we still haven't found a decoder, and the caller has requested a
        specific encoding format, there's no hope for it. Abort.
        */
        if (pConfig->encodingFormat != ma_encoding_format_unknown) {
            return MA_NO_BACKEND;
        }

    #ifdef MA_HAS_WAV
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_wav__internal(pConfig, pDecoder);
            if (result != MA_SUCCESS) {
                onSeek(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_flac__internal(pConfig, pDecoder);
            if (result != MA_SUCCESS) {
                onSeek(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_MP3
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_mp3__internal(pConfig, pDecoder);
            if (result != MA_SUCCESS) {
                onSeek(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_vorbis__internal(pConfig, pDecoder);
            if (result != MA_SUCCESS) {
                onSeek(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    }

    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_decoder__postinit(pConfig, pDecoder);
}

MA_API ma_result ma_decoder_init(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_decoder_config config;
    ma_result result;

    config = ma_decoder_config_init_copy(pConfig);

    result = ma_decoder__preinit(onRead, onSeek, NULL, pUserData, &config, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_decoder_init__internal(onRead, onSeek, pUserData, &config, pDecoder);
}


static ma_result ma_decoder__on_read_memory(ma_decoder* pDecoder, void* pBufferOut, size_t bytesToRead, size_t* pBytesRead)
{
    size_t bytesRemaining;

    MA_ASSERT(pDecoder->data.memory.dataSize >= pDecoder->data.memory.currentReadPos);

    if (pBytesRead != NULL) {
        *pBytesRead = 0;
    }

    bytesRemaining = pDecoder->data.memory.dataSize - pDecoder->data.memory.currentReadPos;
    if (bytesToRead > bytesRemaining) {
        bytesToRead = bytesRemaining;
    }

    if (bytesRemaining == 0) {
        return MA_AT_END;
    }

    if (bytesToRead > 0) {
        MA_COPY_MEMORY(pBufferOut, pDecoder->data.memory.pData + pDecoder->data.memory.currentReadPos, bytesToRead);
        pDecoder->data.memory.currentReadPos += bytesToRead;
    }

    if (pBytesRead != NULL) {
        *pBytesRead = bytesToRead;
    }

    return MA_SUCCESS;
}

static ma_result ma_decoder__on_seek_memory(ma_decoder* pDecoder, ma_int64 byteOffset, ma_seek_origin origin)
{
    if (byteOffset > 0 && (ma_uint64)byteOffset > MA_SIZE_MAX) {
        return MA_BAD_SEEK;
    }

    if (origin == ma_seek_origin_current) {
        if (byteOffset > 0) {
            if (pDecoder->data.memory.currentReadPos + byteOffset > pDecoder->data.memory.dataSize) {
                byteOffset = (ma_int64)(pDecoder->data.memory.dataSize - pDecoder->data.memory.currentReadPos);  /* Trying to seek too far forward. */
            }

            pDecoder->data.memory.currentReadPos += (size_t)byteOffset;
        } else {
            if (pDecoder->data.memory.currentReadPos < (size_t)-byteOffset) {
                byteOffset = -(ma_int64)pDecoder->data.memory.currentReadPos;  /* Trying to seek too far backwards. */
            }

            pDecoder->data.memory.currentReadPos -= (size_t)-byteOffset;
        }
    } else {
        if (origin == ma_seek_origin_end) {
            if (byteOffset < 0) {
                byteOffset = -byteOffset;
            }

            if (byteOffset > (ma_int64)pDecoder->data.memory.dataSize) {
                pDecoder->data.memory.currentReadPos = 0;   /* Trying to seek too far back. */
            } else {
                pDecoder->data.memory.currentReadPos = pDecoder->data.memory.dataSize - (size_t)byteOffset;
            }
        } else {
            if ((size_t)byteOffset <= pDecoder->data.memory.dataSize) {
                pDecoder->data.memory.currentReadPos = (size_t)byteOffset;
            } else {
                pDecoder->data.memory.currentReadPos = pDecoder->data.memory.dataSize;  /* Trying to seek too far forward. */
            }
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_decoder__on_tell_memory(ma_decoder* pDecoder, ma_int64* pCursor)
{
    MA_ASSERT(pDecoder != NULL);
    MA_ASSERT(pCursor  != NULL);

    *pCursor = (ma_int64)pDecoder->data.memory.currentReadPos;

    return MA_SUCCESS;
}

static ma_result ma_decoder__preinit_memory_wrapper(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result = ma_decoder__preinit(ma_decoder__on_read_memory, ma_decoder__on_seek_memory, ma_decoder__on_tell_memory, NULL, pConfig, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pData == NULL || dataSize == 0) {
        return MA_INVALID_ARGS;
    }

    pDecoder->data.memory.pData = (const ma_uint8*)pData;
    pDecoder->data.memory.dataSize = dataSize;
    pDecoder->data.memory.currentReadPos = 0;

    (void)pConfig;
    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_init_memory(const void* pData, size_t dataSize, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoder_config config;

    config = ma_decoder_config_init_copy(pConfig);

    result = ma_decoder__preinit(NULL, NULL, NULL, NULL, &config, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pData == NULL || dataSize == 0) {
        return MA_INVALID_ARGS;
    }

    /* If the backend has support for loading from a file path we'll want to use that. If that all fails we'll fall back to the VFS path. */
    result = MA_NO_BACKEND;

    if (config.encodingFormat != ma_encoding_format_unknown) {
    #ifdef MA_HAS_WAV
        if (config.encodingFormat == ma_encoding_format_wav) {
            result = ma_decoder_init_wav_from_memory__internal(pData, dataSize, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (config.encodingFormat == ma_encoding_format_flac) {
            result = ma_decoder_init_flac_from_memory__internal(pData, dataSize, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (config.encodingFormat == ma_encoding_format_mp3) {
            result = ma_decoder_init_mp3_from_memory__internal(pData, dataSize, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (config.encodingFormat == ma_encoding_format_vorbis) {
            result = ma_decoder_init_vorbis_from_memory__internal(pData, dataSize, &config, pDecoder);
        }
    #endif
    }

    if (result != MA_SUCCESS) {
        /* Getting here means we weren't able to initialize a decoder of a specific encoding format. */

        /*
        We use trial and error to open a decoder. We prioritize custom decoders so that if they
        implement the same encoding format they take priority over the built-in decoders.
        */
        result = ma_decoder_init_custom_from_memory__internal(pData, dataSize, &config, pDecoder);

        /*
        If we get to this point and we still haven't found a decoder, and the caller has requested a
        specific encoding format, there's no hope for it. Abort.
        */
        if (result != MA_SUCCESS && config.encodingFormat != ma_encoding_format_unknown) {
            return MA_NO_BACKEND;
        }

        /* Use trial and error for stock decoders. */
        if (result != MA_SUCCESS) {
        #ifdef MA_HAS_WAV
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_wav_from_memory__internal(pData, dataSize, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_FLAC
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_flac_from_memory__internal(pData, dataSize, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_MP3
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_mp3_from_memory__internal(pData, dataSize, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_VORBIS
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_vorbis_from_memory__internal(pData, dataSize, &config, pDecoder);
            }
        #endif
        }
    }

    /*
    If at this point we still haven't successfully initialized the decoder it most likely means
    the backend doesn't have an implementation for loading from a file path. We'll try using
    miniaudio's built-in file IO for loading file.
    */
    if (result == MA_SUCCESS) {
        /* Initialization was successful. Finish up. */
        result = ma_decoder__postinit(&config, pDecoder);
        if (result != MA_SUCCESS) {
            /*
            The backend was initialized successfully, but for some reason post-initialization failed. This is most likely
            due to an out of memory error. We're going to abort with an error here and not try to recover.
            */
            if (pDecoder->pBackendVTable != NULL && pDecoder->pBackendVTable->onUninit != NULL) {
                pDecoder->pBackendVTable->onUninit(pDecoder->pBackendUserData, &pDecoder->pBackend, &pDecoder->allocationCallbacks);
            }

            return result;
        }
    } else {
        /* Probably no implementation for loading from a block of memory. Use miniaudio's abstraction instead. */
        result = ma_decoder__preinit_memory_wrapper(pData, dataSize, &config, pDecoder);
        if (result != MA_SUCCESS) {
            return result;
        }

        result = ma_decoder_init__internal(ma_decoder__on_read_memory, ma_decoder__on_seek_memory, NULL, &config, pDecoder);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}


#if defined(MA_HAS_WAV)    || \
    defined(MA_HAS_MP3)    || \
    defined(MA_HAS_FLAC)   || \
    defined(MA_HAS_VORBIS)
#define MA_HAS_PATH_API
#endif

#if defined(MA_HAS_PATH_API)
static const char* ma_path_file_name(const char* path)
{
    const char* fileName;

    if (path == NULL) {
        return NULL;
    }

    fileName = path;

    /* We just loop through the path until we find the last slash. */
    while (path[0] != '\0') {
        if (path[0] == '/' || path[0] == '\\') {
            fileName = path;
        }

        path += 1;
    }

    /* At this point the file name is sitting on a slash, so just move forward. */
    while (fileName[0] != '\0' && (fileName[0] == '/' || fileName[0] == '\\')) {
        fileName += 1;
    }

    return fileName;
}

static const wchar_t* ma_path_file_name_w(const wchar_t* path)
{
    const wchar_t* fileName;

    if (path == NULL) {
        return NULL;
    }

    fileName = path;

    /* We just loop through the path until we find the last slash. */
    while (path[0] != '\0') {
        if (path[0] == '/' || path[0] == '\\') {
            fileName = path;
        }

        path += 1;
    }

    /* At this point the file name is sitting on a slash, so just move forward. */
    while (fileName[0] != '\0' && (fileName[0] == '/' || fileName[0] == '\\')) {
        fileName += 1;
    }

    return fileName;
}


static const char* ma_path_extension(const char* path)
{
    const char* extension;
    const char* lastOccurance;

    if (path == NULL) {
        path = "";
    }

    extension = ma_path_file_name(path);
    lastOccurance = NULL;

    /* Just find the last '.' and return. */
    while (extension[0] != '\0') {
        if (extension[0] == '.') {
            extension += 1;
            lastOccurance = extension;
        }

        extension += 1;
    }

    return (lastOccurance != NULL) ? lastOccurance : extension;
}

static const wchar_t* ma_path_extension_w(const wchar_t* path)
{
    const wchar_t* extension;
    const wchar_t* lastOccurance;

    if (path == NULL) {
        path = L"";
    }

    extension = ma_path_file_name_w(path);
    lastOccurance = NULL;

    /* Just find the last '.' and return. */
    while (extension[0] != '\0') {
        if (extension[0] == '.') {
            extension += 1;
            lastOccurance = extension;
        }

        extension += 1;
    }

    return (lastOccurance != NULL) ? lastOccurance : extension;
}


static ma_bool32 ma_path_extension_equal(const char* path, const char* extension)
{
    const char* ext1;
    const char* ext2;

    if (path == NULL || extension == NULL) {
        return MA_FALSE;
    }

    ext1 = extension;
    ext2 = ma_path_extension(path);

#if defined(_MSC_VER) || defined(__DMC__)
    return _stricmp(ext1, ext2) == 0;
#else
    return strcasecmp(ext1, ext2) == 0;
#endif
}

static ma_bool32 ma_path_extension_equal_w(const wchar_t* path, const wchar_t* extension)
{
    const wchar_t* ext1;
    const wchar_t* ext2;

    if (path == NULL || extension == NULL) {
        return MA_FALSE;
    }

    ext1 = extension;
    ext2 = ma_path_extension_w(path);

#if defined(_MSC_VER) || defined(__WATCOMC__) || defined(__DMC__)
    return _wcsicmp(ext1, ext2) == 0;
#else
    /*
    I'm not aware of a wide character version of strcasecmp(). I'm therefore converting the extensions to multibyte strings and comparing those. This
    isn't the most efficient way to do it, but it should work OK.
    */
    {
        char ext1MB[4096];
        char ext2MB[4096];
        const wchar_t* pext1 = ext1;
        const wchar_t* pext2 = ext2;
        mbstate_t mbs1;
        mbstate_t mbs2;

        MA_ZERO_OBJECT(&mbs1);
        MA_ZERO_OBJECT(&mbs2);

        if (wcsrtombs(ext1MB, &pext1, sizeof(ext1MB), &mbs1) == (size_t)-1) {
            return MA_FALSE;
        }
        if (wcsrtombs(ext2MB, &pext2, sizeof(ext2MB), &mbs2) == (size_t)-1) {
            return MA_FALSE;
        }

        return strcasecmp(ext1MB, ext2MB) == 0;
    }
#endif
}
#endif  /* MA_HAS_PATH_API */



static ma_result ma_decoder__on_read_vfs(ma_decoder* pDecoder, void* pBufferOut, size_t bytesToRead, size_t* pBytesRead)
{
    MA_ASSERT(pDecoder   != NULL);
    MA_ASSERT(pBufferOut != NULL);

    return ma_vfs_or_default_read(pDecoder->data.vfs.pVFS, pDecoder->data.vfs.file, pBufferOut, bytesToRead, pBytesRead);
}

static ma_result ma_decoder__on_seek_vfs(ma_decoder* pDecoder, ma_int64 offset, ma_seek_origin origin)
{
    MA_ASSERT(pDecoder != NULL);

    return ma_vfs_or_default_seek(pDecoder->data.vfs.pVFS, pDecoder->data.vfs.file, offset, origin);
}

static ma_result ma_decoder__on_tell_vfs(ma_decoder* pDecoder, ma_int64* pCursor)
{
    MA_ASSERT(pDecoder != NULL);

    return ma_vfs_or_default_tell(pDecoder->data.vfs.pVFS, pDecoder->data.vfs.file, pCursor);
}

static ma_result ma_decoder__preinit_vfs(ma_vfs* pVFS, const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_vfs_file file;

    result = ma_decoder__preinit(ma_decoder__on_read_vfs, ma_decoder__on_seek_vfs, ma_decoder__on_tell_vfs, NULL, pConfig, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pFilePath == NULL || pFilePath[0] == '\0') {
        return MA_INVALID_ARGS;
    }

    result = ma_vfs_or_default_open(pVFS, pFilePath, MA_OPEN_MODE_READ, &file);
    if (result != MA_SUCCESS) {
        return result;
    }

    pDecoder->data.vfs.pVFS = pVFS;
    pDecoder->data.vfs.file = file;

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_init_vfs(ma_vfs* pVFS, const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoder_config config;

    config = ma_decoder_config_init_copy(pConfig);
    result = ma_decoder__preinit_vfs(pVFS, pFilePath, &config, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = MA_NO_BACKEND;

    if (config.encodingFormat != ma_encoding_format_unknown) {
    #ifdef MA_HAS_WAV
        if (config.encodingFormat == ma_encoding_format_wav) {
            result = ma_decoder_init_wav__internal(&config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (config.encodingFormat == ma_encoding_format_flac) {
            result = ma_decoder_init_flac__internal(&config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (config.encodingFormat == ma_encoding_format_mp3) {
            result = ma_decoder_init_mp3__internal(&config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (config.encodingFormat == ma_encoding_format_vorbis) {
            result = ma_decoder_init_vorbis__internal(&config, pDecoder);
        }
    #endif

        /* Make sure we seek back to the start if we didn't initialize a decoder successfully so the next attempts have a fresh start. */
        if (result != MA_SUCCESS) {
            ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
        }
    }

    if (result != MA_SUCCESS) {
        /* Getting here means we weren't able to initialize a decoder of a specific encoding format. */

        /*
        We use trial and error to open a decoder. We prioritize custom decoders so that if they
        implement the same encoding format they take priority over the built-in decoders.
        */
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_custom__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }

        /*
        If we get to this point and we still haven't found a decoder, and the caller has requested a
        specific encoding format, there's no hope for it. Abort.
        */
        if (config.encodingFormat != ma_encoding_format_unknown) {
            return MA_NO_BACKEND;
        }

    #ifdef MA_HAS_WAV
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "wav")) {
            result = ma_decoder_init_wav__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "flac")) {
            result = ma_decoder_init_flac__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_MP3
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "mp3")) {
            result = ma_decoder_init_mp3__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    }

    /* If we still haven't got a result just use trial and error. Otherwise we can finish up. */
    if (result != MA_SUCCESS) {
        result = ma_decoder_init__internal(ma_decoder__on_read_vfs, ma_decoder__on_seek_vfs, NULL, &config, pDecoder);
    } else {
        result = ma_decoder__postinit(&config, pDecoder);
    }

    if (result != MA_SUCCESS) {
        if (pDecoder->data.vfs.file != NULL) {   /* <-- Will be reset to NULL if ma_decoder_uninit() is called in one of the steps above which allows us to avoid a double close of the file. */
            ma_vfs_or_default_close(pVFS, pDecoder->data.vfs.file);
        }

        return result;
    }

    return MA_SUCCESS;
}


static ma_result ma_decoder__preinit_vfs_w(ma_vfs* pVFS, const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_vfs_file file;

    result = ma_decoder__preinit(ma_decoder__on_read_vfs, ma_decoder__on_seek_vfs, ma_decoder__on_tell_vfs, NULL, pConfig, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pFilePath == NULL || pFilePath[0] == '\0') {
        return MA_INVALID_ARGS;
    }

    result = ma_vfs_or_default_open_w(pVFS, pFilePath, MA_OPEN_MODE_READ, &file);
    if (result != MA_SUCCESS) {
        return result;
    }

    pDecoder->data.vfs.pVFS = pVFS;
    pDecoder->data.vfs.file = file;

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_init_vfs_w(ma_vfs* pVFS, const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoder_config config;

    config = ma_decoder_config_init_copy(pConfig);
    result = ma_decoder__preinit_vfs_w(pVFS, pFilePath, &config, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = MA_NO_BACKEND;

    if (config.encodingFormat != ma_encoding_format_unknown) {
    #ifdef MA_HAS_WAV
        if (config.encodingFormat == ma_encoding_format_wav) {
            result = ma_decoder_init_wav__internal(&config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (config.encodingFormat == ma_encoding_format_flac) {
            result = ma_decoder_init_flac__internal(&config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (config.encodingFormat == ma_encoding_format_mp3) {
            result = ma_decoder_init_mp3__internal(&config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (config.encodingFormat == ma_encoding_format_vorbis) {
            result = ma_decoder_init_vorbis__internal(&config, pDecoder);
        }
    #endif

        /* Make sure we seek back to the start if we didn't initialize a decoder successfully so the next attempts have a fresh start. */
        if (result != MA_SUCCESS) {
            ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
        }
    }

    if (result != MA_SUCCESS) {
        /* Getting here means we weren't able to initialize a decoder of a specific encoding format. */

        /*
        We use trial and error to open a decoder. We prioritize custom decoders so that if they
        implement the same encoding format they take priority over the built-in decoders.
        */
        if (result != MA_SUCCESS) {
            result = ma_decoder_init_custom__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }

        /*
        If we get to this point and we still haven't found a decoder, and the caller has requested a
        specific encoding format, there's no hope for it. Abort.
        */
        if (config.encodingFormat != ma_encoding_format_unknown) {
            return MA_NO_BACKEND;
        }

    #ifdef MA_HAS_WAV
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"wav")) {
            result = ma_decoder_init_wav__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"flac")) {
            result = ma_decoder_init_flac__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    #ifdef MA_HAS_MP3
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"mp3")) {
            result = ma_decoder_init_mp3__internal(&config, pDecoder);
            if (result != MA_SUCCESS) {
                ma_decoder__on_seek_vfs(pDecoder, 0, ma_seek_origin_start);
            }
        }
    #endif
    }

    /* If we still haven't got a result just use trial and error. Otherwise we can finish up. */
    if (result != MA_SUCCESS) {
        result = ma_decoder_init__internal(ma_decoder__on_read_vfs, ma_decoder__on_seek_vfs, NULL, &config, pDecoder);
    } else {
        result = ma_decoder__postinit(&config, pDecoder);
    }

    if (result != MA_SUCCESS) {
        ma_vfs_or_default_close(pVFS, pDecoder->data.vfs.file);
        return result;
    }

    return MA_SUCCESS;
}


static ma_result ma_decoder__preinit_file(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;

    result = ma_decoder__preinit(NULL, NULL, NULL, NULL, pConfig, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pFilePath == NULL || pFilePath[0] == '\0') {
        return MA_INVALID_ARGS;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_init_file(const char* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoder_config config;

    config = ma_decoder_config_init_copy(pConfig);
    result = ma_decoder__preinit_file(pFilePath, &config, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* If the backend has support for loading from a file path we'll want to use that. If that all fails we'll fall back to the VFS path. */
    result = MA_NO_BACKEND;

    if (config.encodingFormat != ma_encoding_format_unknown) {
    #ifdef MA_HAS_WAV
        if (config.encodingFormat == ma_encoding_format_wav) {
            result = ma_decoder_init_wav_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (config.encodingFormat == ma_encoding_format_flac) {
            result = ma_decoder_init_flac_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (config.encodingFormat == ma_encoding_format_mp3) {
            result = ma_decoder_init_mp3_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (config.encodingFormat == ma_encoding_format_vorbis) {
            result = ma_decoder_init_vorbis_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    }

    if (result != MA_SUCCESS) {
        /* Getting here means we weren't able to initialize a decoder of a specific encoding format. */

        /*
        We use trial and error to open a decoder. We prioritize custom decoders so that if they
        implement the same encoding format they take priority over the built-in decoders.
        */
        result = ma_decoder_init_custom_from_file__internal(pFilePath, &config, pDecoder);

        /*
        If we get to this point and we still haven't found a decoder, and the caller has requested a
        specific encoding format, there's no hope for it. Abort.
        */
        if (result != MA_SUCCESS && config.encodingFormat != ma_encoding_format_unknown) {
            return MA_NO_BACKEND;
        }

        /* First try loading based on the file extension so we don't waste time opening and closing files. */
    #ifdef MA_HAS_WAV
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "wav")) {
            result = ma_decoder_init_wav_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "flac")) {
            result = ma_decoder_init_flac_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "mp3")) {
            result = ma_decoder_init_mp3_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (result != MA_SUCCESS && ma_path_extension_equal(pFilePath, "ogg")) {
            result = ma_decoder_init_vorbis_from_file__internal(pFilePath, &config, pDecoder);
        }
    #endif

        /*
        If we still haven't got a result just use trial and error. Custom decoders have already been attempted, so here we
        need only iterate over our stock decoders.
        */
        if (result != MA_SUCCESS) {
        #ifdef MA_HAS_WAV
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_wav_from_file__internal(pFilePath, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_FLAC
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_flac_from_file__internal(pFilePath, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_MP3
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_mp3_from_file__internal(pFilePath, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_VORBIS
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_vorbis_from_file__internal(pFilePath, &config, pDecoder);
            }
        #endif
        }
    }

    /*
    If at this point we still haven't successfully initialized the decoder it most likely means
    the backend doesn't have an implementation for loading from a file path. We'll try using
    miniaudio's built-in file IO for loading file.
    */
    if (result == MA_SUCCESS) {
        /* Initialization was successful. Finish up. */
        result = ma_decoder__postinit(&config, pDecoder);
        if (result != MA_SUCCESS) {
            /*
            The backend was initialized successfully, but for some reason post-initialization failed. This is most likely
            due to an out of memory error. We're going to abort with an error here and not try to recover.
            */
            if (pDecoder->pBackendVTable != NULL && pDecoder->pBackendVTable->onUninit != NULL) {
                pDecoder->pBackendVTable->onUninit(pDecoder->pBackendUserData, &pDecoder->pBackend, &pDecoder->allocationCallbacks);
            }

            return result;
        }
    } else {
        /* Probably no implementation for loading from a file path. Use miniaudio's file IO instead. */
        result = ma_decoder_init_vfs(NULL, pFilePath, pConfig, pDecoder);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_result ma_decoder__preinit_file_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;

    result = ma_decoder__preinit(NULL, NULL, NULL, NULL, pConfig, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pFilePath == NULL || pFilePath[0] == '\0') {
        return MA_INVALID_ARGS;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_init_file_w(const wchar_t* pFilePath, const ma_decoder_config* pConfig, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoder_config config;

    config = ma_decoder_config_init_copy(pConfig);
    result = ma_decoder__preinit_file_w(pFilePath, &config, pDecoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* If the backend has support for loading from a file path we'll want to use that. If that all fails we'll fall back to the VFS path. */
    result = MA_NO_BACKEND;

    if (config.encodingFormat != ma_encoding_format_unknown) {
    #ifdef MA_HAS_WAV
        if (config.encodingFormat == ma_encoding_format_wav) {
            result = ma_decoder_init_wav_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (config.encodingFormat == ma_encoding_format_flac) {
            result = ma_decoder_init_flac_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (config.encodingFormat == ma_encoding_format_mp3) {
            result = ma_decoder_init_mp3_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (config.encodingFormat == ma_encoding_format_vorbis) {
            result = ma_decoder_init_vorbis_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    }

    if (result != MA_SUCCESS) {
        /* Getting here means we weren't able to initialize a decoder of a specific encoding format. */

        /*
        We use trial and error to open a decoder. We prioritize custom decoders so that if they
        implement the same encoding format they take priority over the built-in decoders.
        */
        result = ma_decoder_init_custom_from_file_w__internal(pFilePath, &config, pDecoder);

        /*
        If we get to this point and we still haven't found a decoder, and the caller has requested a
        specific encoding format, there's no hope for it. Abort.
        */
        if (result != MA_SUCCESS && config.encodingFormat != ma_encoding_format_unknown) {
            return MA_NO_BACKEND;
        }

        /* First try loading based on the file extension so we don't waste time opening and closing files. */
    #ifdef MA_HAS_WAV
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"wav")) {
            result = ma_decoder_init_wav_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_FLAC
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"flac")) {
            result = ma_decoder_init_flac_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_MP3
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"mp3")) {
            result = ma_decoder_init_mp3_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif
    #ifdef MA_HAS_VORBIS
        if (result != MA_SUCCESS && ma_path_extension_equal_w(pFilePath, L"ogg")) {
            result = ma_decoder_init_vorbis_from_file_w__internal(pFilePath, &config, pDecoder);
        }
    #endif

        /*
        If we still haven't got a result just use trial and error. Custom decoders have already been attempted, so here we
        need only iterate over our stock decoders.
        */
        if (result != MA_SUCCESS) {
        #ifdef MA_HAS_WAV
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_wav_from_file_w__internal(pFilePath, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_FLAC
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_flac_from_file_w__internal(pFilePath, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_MP3
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_mp3_from_file_w__internal(pFilePath, &config, pDecoder);
            }
        #endif
        #ifdef MA_HAS_VORBIS
            if (result != MA_SUCCESS) {
                result = ma_decoder_init_vorbis_from_file_w__internal(pFilePath, &config, pDecoder);
            }
        #endif
        }
    }

    /*
    If at this point we still haven't successfully initialized the decoder it most likely means
    the backend doesn't have an implementation for loading from a file path. We'll try using
    miniaudio's built-in file IO for loading file.
    */
    if (result == MA_SUCCESS) {
        /* Initialization was successful. Finish up. */
        result = ma_decoder__postinit(&config, pDecoder);
        if (result != MA_SUCCESS) {
            /*
            The backend was initialized successfully, but for some reason post-initialization failed. This is most likely
            due to an out of memory error. We're going to abort with an error here and not try to recover.
            */
            if (pDecoder->pBackendVTable != NULL && pDecoder->pBackendVTable->onUninit != NULL) {
                pDecoder->pBackendVTable->onUninit(pDecoder->pBackendUserData, &pDecoder->pBackend, &pDecoder->allocationCallbacks);
            }

            return result;
        }
    } else {
        /* Probably no implementation for loading from a file path. Use miniaudio's file IO instead. */
        result = ma_decoder_init_vfs_w(NULL, pFilePath, pConfig, pDecoder);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_uninit(ma_decoder* pDecoder)
{
    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDecoder->pBackend != NULL) {
        if (pDecoder->pBackendVTable != NULL && pDecoder->pBackendVTable->onUninit != NULL) {
            pDecoder->pBackendVTable->onUninit(pDecoder->pBackendUserData, pDecoder->pBackend, &pDecoder->allocationCallbacks);
        }
    }

    if (pDecoder->onRead == ma_decoder__on_read_vfs) {
        ma_vfs_or_default_close(pDecoder->data.vfs.pVFS, pDecoder->data.vfs.file);
        pDecoder->data.vfs.file = NULL;
    }

    ma_data_converter_uninit(&pDecoder->converter, &pDecoder->allocationCallbacks);
    ma_data_source_uninit(&pDecoder->ds);

    if (pDecoder->pInputCache != NULL) {
        ma_free(pDecoder->pInputCache, &pDecoder->allocationCallbacks);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_read_pcm_frames(ma_decoder* pDecoder, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 totalFramesReadOut;
    void* pRunningFramesOut;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;   /* Safety. */
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDecoder->pBackend == NULL) {
        return MA_INVALID_OPERATION;
    }

    /* Fast path. */
    if (pDecoder->converter.isPassthrough) {
        result = ma_data_source_read_pcm_frames(pDecoder->pBackend, pFramesOut, frameCount, &totalFramesReadOut);
    } else {
        /*
        Getting here means we need to do data conversion. If we're seeking forward and are _not_ doing resampling we can run this in a fast path. If we're doing resampling we
        need to run through each sample because we need to ensure its internal cache is updated.
        */
        if (pFramesOut == NULL && pDecoder->converter.hasResampler == MA_FALSE) {
            result = ma_data_source_read_pcm_frames(pDecoder->pBackend, NULL, frameCount, &totalFramesReadOut);
        } else {
            /* Slow path. Need to run everything through the data converter. */
            ma_format internalFormat;
            ma_uint32 internalChannels;

            totalFramesReadOut = 0;
            pRunningFramesOut  = pFramesOut;

            result = ma_data_source_get_data_format(pDecoder->pBackend, &internalFormat, &internalChannels, NULL, NULL, 0);
            if (result != MA_SUCCESS) {
                return result;   /* Failed to retrieve the internal format and channel count. */
            }

            /*
            We run a different path depending on whether or not we are using a heap-allocated
            intermediary buffer or not. If the data converter does not support the calculation of
            the required number of input frames, we'll use the heap-allocated path. Otherwise we'll
            use the stack-allocated path.
            */
            if (pDecoder->pInputCache != NULL) {
                /* We don't have a way of determining the required number of input frames, so need to persistently store input data in a cache. */
                while (totalFramesReadOut < frameCount) {
                    ma_uint64 framesToReadThisIterationIn;
                    ma_uint64 framesToReadThisIterationOut;

                    /* If there's any data available in the cache, that needs to get processed first. */
                    if (pDecoder->inputCacheRemaining > 0) {
                        framesToReadThisIterationOut = (frameCount - totalFramesReadOut);
                        framesToReadThisIterationIn  = framesToReadThisIterationOut;
                        if (framesToReadThisIterationIn > pDecoder->inputCacheRemaining) {
                            framesToReadThisIterationIn = pDecoder->inputCacheRemaining;
                        }

                        result = ma_data_converter_process_pcm_frames(&pDecoder->converter, ma_offset_pcm_frames_ptr(pDecoder->pInputCache, pDecoder->inputCacheConsumed, internalFormat, internalChannels), &framesToReadThisIterationIn, pRunningFramesOut, &framesToReadThisIterationOut);
                        if (result != MA_SUCCESS) {
                            break;
                        }

                        pDecoder->inputCacheConsumed  += framesToReadThisIterationIn;
                        pDecoder->inputCacheRemaining -= framesToReadThisIterationIn;

                        totalFramesReadOut += framesToReadThisIterationOut;

                        if (pRunningFramesOut != NULL) {
                            pRunningFramesOut = ma_offset_ptr(pRunningFramesOut, framesToReadThisIterationOut * ma_get_bytes_per_frame(pDecoder->outputFormat, pDecoder->outputChannels));
                        }

                        if (framesToReadThisIterationIn == 0 && framesToReadThisIterationOut == 0) {
                            break;  /* We're done. */
                        }
                    }

                    /* Getting here means there's no data in the cache and we need to fill it up from the data source. */
                    if (pDecoder->inputCacheRemaining == 0) {
                        pDecoder->inputCacheConsumed = 0;

                        result = ma_data_source_read_pcm_frames(pDecoder->pBackend, pDecoder->pInputCache, pDecoder->inputCacheCap, &pDecoder->inputCacheRemaining);
                        if (result != MA_SUCCESS) {
                            break;
                        }
                    }
                }
            } else {
                /* We have a way of determining the required number of input frames so just use the stack. */
                while (totalFramesReadOut < frameCount) {
                    ma_uint8 pIntermediaryBuffer[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];  /* In internal format. */
                    ma_uint64 intermediaryBufferCap = sizeof(pIntermediaryBuffer) / ma_get_bytes_per_frame(internalFormat, internalChannels);
                    ma_uint64 framesToReadThisIterationIn;
                    ma_uint64 framesReadThisIterationIn;
                    ma_uint64 framesToReadThisIterationOut;
                    ma_uint64 framesReadThisIterationOut;
                    ma_uint64 requiredInputFrameCount;

                    framesToReadThisIterationOut = (frameCount - totalFramesReadOut);
                    framesToReadThisIterationIn = framesToReadThisIterationOut;
                    if (framesToReadThisIterationIn > intermediaryBufferCap) {
                        framesToReadThisIterationIn = intermediaryBufferCap;
                    }

                    ma_data_converter_get_required_input_frame_count(&pDecoder->converter, framesToReadThisIterationOut, &requiredInputFrameCount);
                    if (framesToReadThisIterationIn > requiredInputFrameCount) {
                        framesToReadThisIterationIn = requiredInputFrameCount;
                    }

                    if (requiredInputFrameCount > 0) {
                        result = ma_data_source_read_pcm_frames(pDecoder->pBackend, pIntermediaryBuffer, framesToReadThisIterationIn, &framesReadThisIterationIn);

                        /*
                        Note here that even if we've reached the end, we don't want to abort because there might be more output frames needing to be
                        generated from cached input data, which might happen if resampling is being performed.
                        */
                        if (result != MA_SUCCESS && result != MA_AT_END) {
                            break;
                        }
                    } else {
                        framesReadThisIterationIn = 0;
                        pIntermediaryBuffer[0] = 0; /* <-- This is just to silence a static analysis warning. */
                    }

                    /*
                    At this point we have our decoded data in input format and now we need to convert to output format. Note that even if we didn't read any
                    input frames, we still want to try processing frames because there may some output frames generated from cached input data.
                    */
                    framesReadThisIterationOut = framesToReadThisIterationOut;
                    result = ma_data_converter_process_pcm_frames(&pDecoder->converter, pIntermediaryBuffer, &framesReadThisIterationIn, pRunningFramesOut, &framesReadThisIterationOut);
                    if (result != MA_SUCCESS) {
                        break;
                    }

                    totalFramesReadOut += framesReadThisIterationOut;

                    if (pRunningFramesOut != NULL) {
                        pRunningFramesOut = ma_offset_ptr(pRunningFramesOut, framesReadThisIterationOut * ma_get_bytes_per_frame(pDecoder->outputFormat, pDecoder->outputChannels));
                    }

                    if (framesReadThisIterationIn == 0 && framesReadThisIterationOut == 0) {
                        break;  /* We're done. */
                    }
                }
            }
        }
    }

    pDecoder->readPointerInPCMFrames += totalFramesReadOut;

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesReadOut;
    }

    if (result == MA_SUCCESS && totalFramesReadOut == 0) {
        result =  MA_AT_END;
    }

    return result;
}

MA_API ma_result ma_decoder_seek_to_pcm_frame(ma_decoder* pDecoder, ma_uint64 frameIndex)
{
    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDecoder->pBackend != NULL) {
        ma_result result;
        ma_uint64 internalFrameIndex;
        ma_uint32 internalSampleRate;
        ma_uint64 currentFrameIndex;

        result = ma_data_source_get_data_format(pDecoder->pBackend, NULL, NULL, &internalSampleRate, NULL, 0);
        if (result != MA_SUCCESS) {
            return result;  /* Failed to retrieve the internal sample rate. */
        }

        if (internalSampleRate == pDecoder->outputSampleRate) {
            internalFrameIndex = frameIndex;
        } else {
            internalFrameIndex = ma_calculate_frame_count_after_resampling(internalSampleRate, pDecoder->outputSampleRate, frameIndex);
        }

        /* Only seek if we're requesting a different frame to what we're currently sitting on. */
        ma_data_source_get_cursor_in_pcm_frames(pDecoder->pBackend, &currentFrameIndex);
        if (currentFrameIndex != internalFrameIndex) {
            result = ma_data_source_seek_to_pcm_frame(pDecoder->pBackend, internalFrameIndex);
            if (result == MA_SUCCESS) {
                pDecoder->readPointerInPCMFrames = frameIndex;
            }

            /* Reset the data converter so that any cached data in the resampler is cleared. */
            ma_data_converter_reset(&pDecoder->converter);
        }

        return result;
    }

    /* Should never get here, but if we do it means onSeekToPCMFrame was not set by the backend. */
    return MA_INVALID_ARGS;
}

MA_API ma_result ma_decoder_get_data_format(ma_decoder* pDecoder, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFormat != NULL) {
        *pFormat = pDecoder->outputFormat;
    }

    if (pChannels != NULL) {
        *pChannels = pDecoder->outputChannels;
    }

    if (pSampleRate != NULL) {
        *pSampleRate = pDecoder->outputSampleRate;
    }

    if (pChannelMap != NULL) {
        ma_data_converter_get_output_channel_map(&pDecoder->converter, pChannelMap, channelMapCap);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_get_cursor_in_pcm_frames(ma_decoder* pDecoder, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = pDecoder->readPointerInPCMFrames;

    return MA_SUCCESS;
}

MA_API ma_result ma_decoder_get_length_in_pcm_frames(ma_decoder* pDecoder, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;

    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDecoder->pBackend != NULL) {
        ma_result result;
        ma_uint64 internalLengthInPCMFrames;
        ma_uint32 internalSampleRate;

        result = ma_data_source_get_length_in_pcm_frames(pDecoder->pBackend, &internalLengthInPCMFrames);
        if (result != MA_SUCCESS) {
            return result;  /* Failed to retrieve the internal length. */
        }

        result = ma_data_source_get_data_format(pDecoder->pBackend, NULL, NULL, &internalSampleRate, NULL, 0);
        if (result != MA_SUCCESS) {
            return result;   /* Failed to retrieve the internal sample rate. */
        }

        if (internalSampleRate == pDecoder->outputSampleRate) {
            *pLength = internalLengthInPCMFrames;
        } else {
            *pLength = ma_calculate_frame_count_after_resampling(pDecoder->outputSampleRate, internalSampleRate, internalLengthInPCMFrames);
        }

        return MA_SUCCESS;
    } else {
        return MA_NO_BACKEND;
    }
}

MA_API ma_result ma_decoder_get_available_frames(ma_decoder* pDecoder, ma_uint64* pAvailableFrames)
{
    ma_result result;
    ma_uint64 totalFrameCount;

    if (pAvailableFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    *pAvailableFrames = 0;

    if (pDecoder == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_decoder_get_length_in_pcm_frames(pDecoder, &totalFrameCount);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (totalFrameCount <= pDecoder->readPointerInPCMFrames) {
        *pAvailableFrames = 0;
    } else {
        *pAvailableFrames = totalFrameCount - pDecoder->readPointerInPCMFrames;
    }

    return MA_SUCCESS;
}


static ma_result ma_decoder__full_decode_and_uninit(ma_decoder* pDecoder, ma_decoder_config* pConfigOut, ma_uint64* pFrameCountOut, void** ppPCMFramesOut)
{
    ma_result result;
    ma_uint64 totalFrameCount;
    ma_uint64 bpf;
    ma_uint64 dataCapInFrames;
    void* pPCMFramesOut;

    MA_ASSERT(pDecoder != NULL);

    totalFrameCount = 0;
    bpf = ma_get_bytes_per_frame(pDecoder->outputFormat, pDecoder->outputChannels);

    /* The frame count is unknown until we try reading. Thus, we just run in a loop. */
    dataCapInFrames = 0;
    pPCMFramesOut = NULL;
    for (;;) {
        ma_uint64 frameCountToTryReading;
        ma_uint64 framesJustRead;

        /* Make room if there's not enough. */
        if (totalFrameCount == dataCapInFrames) {
            void* pNewPCMFramesOut;
            ma_uint64 newDataCapInFrames = dataCapInFrames*2;
            if (newDataCapInFrames == 0) {
                newDataCapInFrames = 4096;
            }

            if ((newDataCapInFrames * bpf) > MA_SIZE_MAX) {
                ma_free(pPCMFramesOut, &pDecoder->allocationCallbacks);
                return MA_TOO_BIG;
            }

            pNewPCMFramesOut = (void*)ma_realloc(pPCMFramesOut, (size_t)(newDataCapInFrames * bpf), &pDecoder->allocationCallbacks);
            if (pNewPCMFramesOut == NULL) {
                ma_free(pPCMFramesOut, &pDecoder->allocationCallbacks);
                return MA_OUT_OF_MEMORY;
            }

            dataCapInFrames = newDataCapInFrames;
            pPCMFramesOut = pNewPCMFramesOut;
        }

        frameCountToTryReading = dataCapInFrames - totalFrameCount;
        MA_ASSERT(frameCountToTryReading > 0);

        result = ma_decoder_read_pcm_frames(pDecoder, (ma_uint8*)pPCMFramesOut + (totalFrameCount * bpf), frameCountToTryReading, &framesJustRead);
        totalFrameCount += framesJustRead;

        if (result != MA_SUCCESS) {
            break;
        }

        if (framesJustRead < frameCountToTryReading) {
            break;
        }
    }


    if (pConfigOut != NULL) {
        pConfigOut->format     = pDecoder->outputFormat;
        pConfigOut->channels   = pDecoder->outputChannels;
        pConfigOut->sampleRate = pDecoder->outputSampleRate;
    }

    if (ppPCMFramesOut != NULL) {
        *ppPCMFramesOut = pPCMFramesOut;
    } else {
        ma_free(pPCMFramesOut, &pDecoder->allocationCallbacks);
    }

    if (pFrameCountOut != NULL) {
        *pFrameCountOut = totalFrameCount;
    }

    ma_decoder_uninit(pDecoder);
    return MA_SUCCESS;
}

MA_API ma_result ma_decode_from_vfs(ma_vfs* pVFS, const char* pFilePath, ma_decoder_config* pConfig, ma_uint64* pFrameCountOut, void** ppPCMFramesOut)
{
    ma_result result;
    ma_decoder_config config;
    ma_decoder decoder;

    if (pFrameCountOut != NULL) {
        *pFrameCountOut = 0;
    }
    if (ppPCMFramesOut != NULL) {
        *ppPCMFramesOut = NULL;
    }

    config = ma_decoder_config_init_copy(pConfig);

    result = ma_decoder_init_vfs(pVFS, pFilePath, &config, &decoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_decoder__full_decode_and_uninit(&decoder, pConfig, pFrameCountOut, ppPCMFramesOut);

    return result;
}

MA_API ma_result ma_decode_file(const char* pFilePath, ma_decoder_config* pConfig, ma_uint64* pFrameCountOut, void** ppPCMFramesOut)
{
    return ma_decode_from_vfs(NULL, pFilePath, pConfig, pFrameCountOut, ppPCMFramesOut);
}

MA_API ma_result ma_decode_memory(const void* pData, size_t dataSize, ma_decoder_config* pConfig, ma_uint64* pFrameCountOut, void** ppPCMFramesOut)
{
    ma_decoder_config config;
    ma_decoder decoder;
    ma_result result;

    if (pFrameCountOut != NULL) {
        *pFrameCountOut = 0;
    }
    if (ppPCMFramesOut != NULL) {
        *ppPCMFramesOut = NULL;
    }

    if (pData == NULL || dataSize == 0) {
        return MA_INVALID_ARGS;
    }

    config = ma_decoder_config_init_copy(pConfig);

    result = ma_decoder_init_memory(pData, dataSize, &config, &decoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_decoder__full_decode_and_uninit(&decoder, pConfig, pFrameCountOut, ppPCMFramesOut);
}
#endif  /* MA_NO_DECODING */


#ifndef MA_NO_ENCODING

#if defined(MA_HAS_WAV)
static size_t ma_encoder__internal_on_write_wav(void* pUserData, const void* pData, size_t bytesToWrite)
{
    ma_encoder* pEncoder = (ma_encoder*)pUserData;
    size_t bytesWritten = 0;

    MA_ASSERT(pEncoder != NULL);

    pEncoder->onWrite(pEncoder, pData, bytesToWrite, &bytesWritten);
    return bytesWritten;
}

static ma_bool32 ma_encoder__internal_on_seek_wav(void* pUserData, int offset, ma_dr_wav_seek_origin origin)
{
    ma_encoder* pEncoder = (ma_encoder*)pUserData;
    ma_result result;

    MA_ASSERT(pEncoder != NULL);

    result = pEncoder->onSeek(pEncoder, offset, (origin == ma_dr_wav_seek_origin_start) ? ma_seek_origin_start : ma_seek_origin_current);
    if (result != MA_SUCCESS) {
        return MA_FALSE;
    } else {
        return MA_TRUE;
    }
}

static ma_result ma_encoder__on_init_wav(ma_encoder* pEncoder)
{
    ma_dr_wav_data_format wavFormat;
    ma_allocation_callbacks allocationCallbacks;
    ma_dr_wav* pWav;

    MA_ASSERT(pEncoder != NULL);

    pWav = (ma_dr_wav*)ma_malloc(sizeof(*pWav), &pEncoder->config.allocationCallbacks);
    if (pWav == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    wavFormat.container     = ma_dr_wav_container_riff;
    wavFormat.channels      = pEncoder->config.channels;
    wavFormat.sampleRate    = pEncoder->config.sampleRate;
    wavFormat.bitsPerSample = ma_get_bytes_per_sample(pEncoder->config.format) * 8;
    if (pEncoder->config.format == ma_format_f32) {
        wavFormat.format    = MA_DR_WAVE_FORMAT_IEEE_FLOAT;
    } else {
        wavFormat.format    = MA_DR_WAVE_FORMAT_PCM;
    }

    allocationCallbacks.pUserData = pEncoder->config.allocationCallbacks.pUserData;
    allocationCallbacks.onMalloc  = pEncoder->config.allocationCallbacks.onMalloc;
    allocationCallbacks.onRealloc = pEncoder->config.allocationCallbacks.onRealloc;
    allocationCallbacks.onFree    = pEncoder->config.allocationCallbacks.onFree;

    if (!ma_dr_wav_init_write(pWav, &wavFormat, ma_encoder__internal_on_write_wav, ma_encoder__internal_on_seek_wav, pEncoder, &allocationCallbacks)) {
        return MA_ERROR;
    }

    pEncoder->pInternalEncoder = pWav;

    return MA_SUCCESS;
}

static void ma_encoder__on_uninit_wav(ma_encoder* pEncoder)
{
    ma_dr_wav* pWav;

    MA_ASSERT(pEncoder != NULL);

    pWav = (ma_dr_wav*)pEncoder->pInternalEncoder;
    MA_ASSERT(pWav != NULL);

    ma_dr_wav_uninit(pWav);
    ma_free(pWav, &pEncoder->config.allocationCallbacks);
}

static ma_result ma_encoder__on_write_pcm_frames_wav(ma_encoder* pEncoder, const void* pFramesIn, ma_uint64 frameCount, ma_uint64* pFramesWritten)
{
    ma_dr_wav* pWav;
    ma_uint64 framesWritten;

    MA_ASSERT(pEncoder != NULL);

    pWav = (ma_dr_wav*)pEncoder->pInternalEncoder;
    MA_ASSERT(pWav != NULL);

    framesWritten = ma_dr_wav_write_pcm_frames(pWav, frameCount, pFramesIn);

    if (pFramesWritten != NULL) {
        *pFramesWritten = framesWritten;
    }

    return MA_SUCCESS;
}
#endif

MA_API ma_encoder_config ma_encoder_config_init(ma_encoding_format encodingFormat, ma_format format, ma_uint32 channels, ma_uint32 sampleRate)
{
    ma_encoder_config config;

    MA_ZERO_OBJECT(&config);
    config.encodingFormat = encodingFormat;
    config.format = format;
    config.channels = channels;
    config.sampleRate = sampleRate;

    return config;
}

MA_API ma_result ma_encoder_preinit(const ma_encoder_config* pConfig, ma_encoder* pEncoder)
{
    ma_result result;

    if (pEncoder == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pEncoder);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->format == ma_format_unknown || pConfig->channels == 0 || pConfig->sampleRate == 0) {
        return MA_INVALID_ARGS;
    }

    pEncoder->config = *pConfig;

    result = ma_allocation_callbacks_init_copy(&pEncoder->config.allocationCallbacks, &pConfig->allocationCallbacks);
    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_encoder_init__internal(ma_encoder_write_proc onWrite, ma_encoder_seek_proc onSeek, void* pUserData, ma_encoder* pEncoder)
{
    ma_result result = MA_SUCCESS;

    /* This assumes ma_encoder_preinit() has been called prior. */
    MA_ASSERT(pEncoder != NULL);

    if (onWrite == NULL || onSeek == NULL) {
        return MA_INVALID_ARGS;
    }

    pEncoder->onWrite   = onWrite;
    pEncoder->onSeek    = onSeek;
    pEncoder->pUserData = pUserData;

    switch (pEncoder->config.encodingFormat)
    {
        case ma_encoding_format_wav:
        {
        #if defined(MA_HAS_WAV)
            pEncoder->onInit           = ma_encoder__on_init_wav;
            pEncoder->onUninit         = ma_encoder__on_uninit_wav;
            pEncoder->onWritePCMFrames = ma_encoder__on_write_pcm_frames_wav;
        #else
            result = MA_NO_BACKEND;
        #endif
        } break;

        default:
        {
            result = MA_INVALID_ARGS;
        } break;
    }

    /* Getting here means we should have our backend callbacks set up. */
    if (result == MA_SUCCESS) {
        result = pEncoder->onInit(pEncoder);
    }

    return result;
}

static ma_result ma_encoder__on_write_vfs(ma_encoder* pEncoder, const void* pBufferIn, size_t bytesToWrite, size_t* pBytesWritten)
{
    return ma_vfs_or_default_write(pEncoder->data.vfs.pVFS, pEncoder->data.vfs.file, pBufferIn, bytesToWrite, pBytesWritten);
}

static ma_result ma_encoder__on_seek_vfs(ma_encoder* pEncoder, ma_int64 offset, ma_seek_origin origin)
{
    return ma_vfs_or_default_seek(pEncoder->data.vfs.pVFS, pEncoder->data.vfs.file, offset, origin);
}

MA_API ma_result ma_encoder_init_vfs(ma_vfs* pVFS, const char* pFilePath, const ma_encoder_config* pConfig, ma_encoder* pEncoder)
{
    ma_result result;
    ma_vfs_file file;

    result = ma_encoder_preinit(pConfig, pEncoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Now open the file. If this fails we don't need to uninitialize the encoder. */
    result = ma_vfs_or_default_open(pVFS, pFilePath, MA_OPEN_MODE_WRITE, &file);
    if (result != MA_SUCCESS) {
        return result;
    }

    pEncoder->data.vfs.pVFS = pVFS;
    pEncoder->data.vfs.file = file;

    result = ma_encoder_init__internal(ma_encoder__on_write_vfs, ma_encoder__on_seek_vfs, NULL, pEncoder);
    if (result != MA_SUCCESS) {
        ma_vfs_or_default_close(pVFS, file);
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_encoder_init_vfs_w(ma_vfs* pVFS, const wchar_t* pFilePath, const ma_encoder_config* pConfig, ma_encoder* pEncoder)
{
    ma_result result;
    ma_vfs_file file;

    result = ma_encoder_preinit(pConfig, pEncoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Now open the file. If this fails we don't need to uninitialize the encoder. */
    result = ma_vfs_or_default_open_w(pVFS, pFilePath, MA_OPEN_MODE_WRITE, &file);
    if (result != MA_SUCCESS) {
        return result;
    }

    pEncoder->data.vfs.pVFS = pVFS;
    pEncoder->data.vfs.file = file;

    result = ma_encoder_init__internal(ma_encoder__on_write_vfs, ma_encoder__on_seek_vfs, NULL, pEncoder);
    if (result != MA_SUCCESS) {
        ma_vfs_or_default_close(pVFS, file);
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_encoder_init_file(const char* pFilePath, const ma_encoder_config* pConfig, ma_encoder* pEncoder)
{
    return ma_encoder_init_vfs(NULL, pFilePath, pConfig, pEncoder);
}

MA_API ma_result ma_encoder_init_file_w(const wchar_t* pFilePath, const ma_encoder_config* pConfig, ma_encoder* pEncoder)
{
    return ma_encoder_init_vfs_w(NULL, pFilePath, pConfig, pEncoder);
}

MA_API ma_result ma_encoder_init(ma_encoder_write_proc onWrite, ma_encoder_seek_proc onSeek, void* pUserData, const ma_encoder_config* pConfig, ma_encoder* pEncoder)
{
    ma_result result;

    result = ma_encoder_preinit(pConfig, pEncoder);
    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_encoder_init__internal(onWrite, onSeek, pUserData, pEncoder);
}


MA_API void ma_encoder_uninit(ma_encoder* pEncoder)
{
    if (pEncoder == NULL) {
        return;
    }

    if (pEncoder->onUninit) {
        pEncoder->onUninit(pEncoder);
    }

    /* If we have a file handle, close it. */
    if (pEncoder->onWrite == ma_encoder__on_write_vfs) {
        ma_vfs_or_default_close(pEncoder->data.vfs.pVFS, pEncoder->data.vfs.file);
        pEncoder->data.vfs.file = NULL;
    }
}


MA_API ma_result ma_encoder_write_pcm_frames(ma_encoder* pEncoder, const void* pFramesIn, ma_uint64 frameCount, ma_uint64* pFramesWritten)
{
    if (pFramesWritten != NULL) {
        *pFramesWritten = 0;
    }

    if (pEncoder == NULL || pFramesIn == NULL) {
        return MA_INVALID_ARGS;
    }

    return pEncoder->onWritePCMFrames(pEncoder, pFramesIn, frameCount, pFramesWritten);
}
#endif  /* MA_NO_ENCODING */



/**************************************************************************************************************************************************************

Generation

**************************************************************************************************************************************************************/
#ifndef MA_NO_GENERATION
MA_API ma_waveform_config ma_waveform_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, ma_waveform_type type, double amplitude, double frequency)
{
    ma_waveform_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;
    config.type       = type;
    config.amplitude  = amplitude;
    config.frequency  = frequency;

    return config;
}

static ma_result ma_waveform__data_source_on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_waveform_read_pcm_frames((ma_waveform*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_waveform__data_source_on_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_waveform_seek_to_pcm_frame((ma_waveform*)pDataSource, frameIndex);
}

static ma_result ma_waveform__data_source_on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_waveform* pWaveform = (ma_waveform*)pDataSource;

    *pFormat     = pWaveform->config.format;
    *pChannels   = pWaveform->config.channels;
    *pSampleRate = pWaveform->config.sampleRate;
    ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pWaveform->config.channels);

    return MA_SUCCESS;
}

static ma_result ma_waveform__data_source_on_get_cursor(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    ma_waveform* pWaveform = (ma_waveform*)pDataSource;

    *pCursor = (ma_uint64)(pWaveform->time / pWaveform->advance);

    return MA_SUCCESS;
}

static double ma_waveform__calculate_advance(ma_uint32 sampleRate, double frequency)
{
    return (1.0 / (sampleRate / frequency));
}

static void ma_waveform__update_advance(ma_waveform* pWaveform)
{
    pWaveform->advance = ma_waveform__calculate_advance(pWaveform->config.sampleRate, pWaveform->config.frequency);
}

static ma_data_source_vtable g_ma_waveform_data_source_vtable =
{
    ma_waveform__data_source_on_read,
    ma_waveform__data_source_on_seek,
    ma_waveform__data_source_on_get_data_format,
    ma_waveform__data_source_on_get_cursor,
    NULL,   /* onGetLength. There's no notion of a length in waveforms. */
    NULL,   /* onSetLooping */
    0
};

MA_API ma_result ma_waveform_init(const ma_waveform_config* pConfig, ma_waveform* pWaveform)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;

    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pWaveform);

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_waveform_data_source_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pWaveform->ds);
    if (result != MA_SUCCESS) {
        return result;
    }

    pWaveform->config  = *pConfig;
    pWaveform->advance = ma_waveform__calculate_advance(pWaveform->config.sampleRate, pWaveform->config.frequency);
    pWaveform->time    = 0;

    return MA_SUCCESS;
}

MA_API void ma_waveform_uninit(ma_waveform* pWaveform)
{
    if (pWaveform == NULL) {
        return;
    }

    ma_data_source_uninit(&pWaveform->ds);
}

MA_API ma_result ma_waveform_set_amplitude(ma_waveform* pWaveform, double amplitude)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.amplitude = amplitude;
    return MA_SUCCESS;
}

MA_API ma_result ma_waveform_set_frequency(ma_waveform* pWaveform, double frequency)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.frequency = frequency;
    ma_waveform__update_advance(pWaveform);

    return MA_SUCCESS;
}

MA_API ma_result ma_waveform_set_type(ma_waveform* pWaveform, ma_waveform_type type)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.type = type;
    return MA_SUCCESS;
}

MA_API ma_result ma_waveform_set_sample_rate(ma_waveform* pWaveform, ma_uint32 sampleRate)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.sampleRate = sampleRate;
    ma_waveform__update_advance(pWaveform);

    return MA_SUCCESS;
}

static float ma_waveform_sine_f32(double time, double amplitude)
{
    return (float)(ma_sind(MA_TAU_D * time) * amplitude);
}

static ma_int16 ma_waveform_sine_s16(double time, double amplitude)
{
    return ma_pcm_sample_f32_to_s16(ma_waveform_sine_f32(time, amplitude));
}

static float ma_waveform_square_f32(double time, double dutyCycle, double amplitude)
{
    double f = time - (ma_int64)time;
    double r;

    if (f < dutyCycle) {
        r =  amplitude;
    } else {
        r = -amplitude;
    }

    return (float)r;
}

static ma_int16 ma_waveform_square_s16(double time, double dutyCycle, double amplitude)
{
    return ma_pcm_sample_f32_to_s16(ma_waveform_square_f32(time, dutyCycle, amplitude));
}

static float ma_waveform_triangle_f32(double time, double amplitude)
{
    double f = time - (ma_int64)time;
    double r;

    r = 2 * ma_abs(2 * (f - 0.5)) - 1;

    return (float)(r * amplitude);
}

static ma_int16 ma_waveform_triangle_s16(double time, double amplitude)
{
    return ma_pcm_sample_f32_to_s16(ma_waveform_triangle_f32(time, amplitude));
}

static float ma_waveform_sawtooth_f32(double time, double amplitude)
{
    double f = time - (ma_int64)time;
    double r;

    r = 2 * (f - 0.5);

    return (float)(r * amplitude);
}

static ma_int16 ma_waveform_sawtooth_s16(double time, double amplitude)
{
    return ma_pcm_sample_f32_to_s16(ma_waveform_sawtooth_f32(time, amplitude));
}

static void ma_waveform_read_pcm_frames__sine(ma_waveform* pWaveform, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint64 iChannel;
    ma_uint32 bps = ma_get_bytes_per_sample(pWaveform->config.format);
    ma_uint32 bpf = bps * pWaveform->config.channels;

    MA_ASSERT(pWaveform  != NULL);
    MA_ASSERT(pFramesOut != NULL);

    if (pWaveform->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_sine_f32(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutF32[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else if (pWaveform->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            ma_int16 s = ma_waveform_sine_s16(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutS16[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else {
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_sine_f32(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pWaveform->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
            }
        }
    }
}

static void ma_waveform_read_pcm_frames__square(ma_waveform* pWaveform, double dutyCycle, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint64 iChannel;
    ma_uint32 bps = ma_get_bytes_per_sample(pWaveform->config.format);
    ma_uint32 bpf = bps * pWaveform->config.channels;

    MA_ASSERT(pWaveform  != NULL);
    MA_ASSERT(pFramesOut != NULL);

    if (pWaveform->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_square_f32(pWaveform->time, dutyCycle, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutF32[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else if (pWaveform->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            ma_int16 s = ma_waveform_square_s16(pWaveform->time, dutyCycle, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutS16[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else {
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_square_f32(pWaveform->time, dutyCycle, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pWaveform->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
            }
        }
    }
}

static void ma_waveform_read_pcm_frames__triangle(ma_waveform* pWaveform, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint64 iChannel;
    ma_uint32 bps = ma_get_bytes_per_sample(pWaveform->config.format);
    ma_uint32 bpf = bps * pWaveform->config.channels;

    MA_ASSERT(pWaveform  != NULL);
    MA_ASSERT(pFramesOut != NULL);

    if (pWaveform->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_triangle_f32(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutF32[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else if (pWaveform->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            ma_int16 s = ma_waveform_triangle_s16(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutS16[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else {
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_triangle_f32(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pWaveform->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
            }
        }
    }
}

static void ma_waveform_read_pcm_frames__sawtooth(ma_waveform* pWaveform, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint64 iChannel;
    ma_uint32 bps = ma_get_bytes_per_sample(pWaveform->config.format);
    ma_uint32 bpf = bps * pWaveform->config.channels;

    MA_ASSERT(pWaveform  != NULL);
    MA_ASSERT(pFramesOut != NULL);

    if (pWaveform->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_sawtooth_f32(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutF32[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else if (pWaveform->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            ma_int16 s = ma_waveform_sawtooth_s16(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                pFramesOutS16[iFrame*pWaveform->config.channels + iChannel] = s;
            }
        }
    } else {
        for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
            float s = ma_waveform_sawtooth_f32(pWaveform->time, pWaveform->config.amplitude);
            pWaveform->time += pWaveform->advance;

            for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
                ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pWaveform->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
            }
        }
    }
}

MA_API ma_result ma_waveform_read_pcm_frames(ma_waveform* pWaveform, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFramesOut != NULL) {
        switch (pWaveform->config.type)
        {
            case ma_waveform_type_sine:
            {
                ma_waveform_read_pcm_frames__sine(pWaveform, pFramesOut, frameCount);
            } break;

            case ma_waveform_type_square:
            {
                ma_waveform_read_pcm_frames__square(pWaveform, 0.5, pFramesOut, frameCount);
            } break;

            case ma_waveform_type_triangle:
            {
                ma_waveform_read_pcm_frames__triangle(pWaveform, pFramesOut, frameCount);
            } break;

            case ma_waveform_type_sawtooth:
            {
                ma_waveform_read_pcm_frames__sawtooth(pWaveform, pFramesOut, frameCount);
            } break;

            default: return MA_INVALID_OPERATION;   /* Unknown waveform type. */
        }
    } else {
        pWaveform->time += pWaveform->advance * (ma_int64)frameCount; /* Cast to int64 required for VC6. Won't affect anything in practice. */
    }

    if (pFramesRead != NULL) {
        *pFramesRead = frameCount;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_waveform_seek_to_pcm_frame(ma_waveform* pWaveform, ma_uint64 frameIndex)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->time = pWaveform->advance * (ma_int64)frameIndex;    /* Casting for VC6. Won't be an issue in practice. */

    return MA_SUCCESS;
}

MA_API ma_pulsewave_config ma_pulsewave_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double dutyCycle, double amplitude, double frequency)
{
    ma_pulsewave_config config;

    MA_ZERO_OBJECT(&config);
    config.format     = format;
    config.channels   = channels;
    config.sampleRate = sampleRate;
    config.dutyCycle  = dutyCycle;
    config.amplitude  = amplitude;
    config.frequency  = frequency;

    return config;
}

MA_API ma_result ma_pulsewave_init(const ma_pulsewave_config* pConfig, ma_pulsewave* pWaveform)
{
    ma_result result;
    ma_waveform_config config;

    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pWaveform);

    config = ma_waveform_config_init(
        pConfig->format,
        pConfig->channels,
        pConfig->sampleRate,
        ma_waveform_type_square,
        pConfig->amplitude,
        pConfig->frequency
    );

    result = ma_waveform_init(&config, &pWaveform->waveform);
    ma_pulsewave_set_duty_cycle(pWaveform, pConfig->dutyCycle);

    return result;
}

MA_API void ma_pulsewave_uninit(ma_pulsewave* pWaveform)
{
    if (pWaveform == NULL) {
        return;
    }

    ma_waveform_uninit(&pWaveform->waveform);
}

MA_API ma_result ma_pulsewave_read_pcm_frames(ma_pulsewave* pWaveform, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pFramesOut != NULL) {
        ma_waveform_read_pcm_frames__square(&pWaveform->waveform, pWaveform->config.dutyCycle, pFramesOut, frameCount);
    } else {
        pWaveform->waveform.time += pWaveform->waveform.advance * (ma_int64)frameCount; /* Cast to int64 required for VC6. Won't affect anything in practice. */
    }

    if (pFramesRead != NULL) {
        *pFramesRead = frameCount;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_pulsewave_seek_to_pcm_frame(ma_pulsewave* pWaveform, ma_uint64 frameIndex)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_waveform_seek_to_pcm_frame(&pWaveform->waveform, frameIndex);

    return MA_SUCCESS;
}

MA_API ma_result ma_pulsewave_set_amplitude(ma_pulsewave* pWaveform, double amplitude)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.amplitude = amplitude;
    ma_waveform_set_amplitude(&pWaveform->waveform, amplitude);

    return MA_SUCCESS;
}

MA_API ma_result ma_pulsewave_set_frequency(ma_pulsewave* pWaveform, double frequency)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.frequency = frequency;
    ma_waveform_set_frequency(&pWaveform->waveform, frequency);

    return MA_SUCCESS;
}

MA_API ma_result ma_pulsewave_set_sample_rate(ma_pulsewave* pWaveform, ma_uint32 sampleRate)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.sampleRate = sampleRate;
    ma_waveform_set_sample_rate(&pWaveform->waveform, sampleRate);

    return MA_SUCCESS;
}

MA_API ma_result ma_pulsewave_set_duty_cycle(ma_pulsewave* pWaveform, double dutyCycle)
{
    if (pWaveform == NULL) {
        return MA_INVALID_ARGS;
    }

    pWaveform->config.dutyCycle = dutyCycle;

    return MA_SUCCESS;
}



MA_API ma_noise_config ma_noise_config_init(ma_format format, ma_uint32 channels, ma_noise_type type, ma_int32 seed, double amplitude)
{
    ma_noise_config config;
    MA_ZERO_OBJECT(&config);

    config.format    = format;
    config.channels  = channels;
    config.type      = type;
    config.seed      = seed;
    config.amplitude = amplitude;

    if (config.seed == 0) {
        config.seed = MA_DEFAULT_LCG_SEED;
    }

    return config;
}


static ma_result ma_noise__data_source_on_read(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_noise_read_pcm_frames((ma_noise*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_noise__data_source_on_seek(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    /* No-op. Just pretend to be successful. */
    (void)pDataSource;
    (void)frameIndex;
    return MA_SUCCESS;
}

static ma_result ma_noise__data_source_on_get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    ma_noise* pNoise = (ma_noise*)pDataSource;

    *pFormat     = pNoise->config.format;
    *pChannels   = pNoise->config.channels;
    *pSampleRate = 0;   /* There is no notion of sample rate with noise generation. */
    ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pNoise->config.channels);

    return MA_SUCCESS;
}

static ma_data_source_vtable g_ma_noise_data_source_vtable =
{
    ma_noise__data_source_on_read,
    ma_noise__data_source_on_seek,  /* No-op for noise. */
    ma_noise__data_source_on_get_data_format,
    NULL,   /* onGetCursor. No notion of a cursor for noise. */
    NULL,   /* onGetLength. No notion of a length for noise. */
    NULL,   /* onSetLooping */
    0
};


#ifndef MA_PINK_NOISE_BIN_SIZE
#define MA_PINK_NOISE_BIN_SIZE 16
#endif

typedef struct
{
    size_t sizeInBytes;
    struct
    {
        size_t binOffset;
        size_t accumulationOffset;
        size_t counterOffset;
    } pink;
    struct
    {
        size_t accumulationOffset;
    } brownian;
} ma_noise_heap_layout;

static ma_result ma_noise_get_heap_layout(const ma_noise_config* pConfig, ma_noise_heap_layout* pHeapLayout)
{
    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->channels == 0) {
        return MA_INVALID_ARGS;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Pink. */
    if (pConfig->type == ma_noise_type_pink) {
        /* bin */
        pHeapLayout->pink.binOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += sizeof(double*) * pConfig->channels;
        pHeapLayout->sizeInBytes += sizeof(double ) * pConfig->channels * MA_PINK_NOISE_BIN_SIZE;

        /* accumulation */
        pHeapLayout->pink.accumulationOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += sizeof(double) * pConfig->channels;

        /* counter */
        pHeapLayout->pink.counterOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += sizeof(ma_uint32) * pConfig->channels;
    }

    /* Brownian. */
    if (pConfig->type == ma_noise_type_brownian) {
        /* accumulation */
        pHeapLayout->brownian.accumulationOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += sizeof(double) * pConfig->channels;
    }

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_noise_get_heap_size(const ma_noise_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_noise_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_noise_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_noise_init_preallocated(const ma_noise_config* pConfig, void* pHeap, ma_noise* pNoise)
{
    ma_result result;
    ma_noise_heap_layout heapLayout;
    ma_data_source_config dataSourceConfig;
    ma_uint32 iChannel;

    if (pNoise == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNoise);

    result = ma_noise_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pNoise->_pHeap = pHeap;
    MA_ZERO_MEMORY(pNoise->_pHeap, heapLayout.sizeInBytes);

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_noise_data_source_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pNoise->ds);
    if (result != MA_SUCCESS) {
        return result;
    }

    pNoise->config = *pConfig;
    ma_lcg_seed(&pNoise->lcg, pConfig->seed);

    if (pNoise->config.type == ma_noise_type_pink) {
        pNoise->state.pink.bin          = (double**  )ma_offset_ptr(pHeap, heapLayout.pink.binOffset);
        pNoise->state.pink.accumulation = (double*   )ma_offset_ptr(pHeap, heapLayout.pink.accumulationOffset);
        pNoise->state.pink.counter      = (ma_uint32*)ma_offset_ptr(pHeap, heapLayout.pink.counterOffset);

        for (iChannel = 0; iChannel < pConfig->channels; iChannel += 1) {
            pNoise->state.pink.bin[iChannel]          = (double*)ma_offset_ptr(pHeap, heapLayout.pink.binOffset + (sizeof(double*) * pConfig->channels) + (sizeof(double) * MA_PINK_NOISE_BIN_SIZE * iChannel));
            pNoise->state.pink.accumulation[iChannel] = 0;
            pNoise->state.pink.counter[iChannel]      = 1;
        }
    }

    if (pNoise->config.type == ma_noise_type_brownian) {
        pNoise->state.brownian.accumulation = (double*)ma_offset_ptr(pHeap, heapLayout.brownian.accumulationOffset);

        for (iChannel = 0; iChannel < pConfig->channels; iChannel += 1) {
            pNoise->state.brownian.accumulation[iChannel] = 0;
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_noise_init(const ma_noise_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_noise* pNoise)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_noise_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_noise_init_preallocated(pConfig, pHeap, pNoise);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pNoise->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_noise_uninit(ma_noise* pNoise, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pNoise == NULL) {
        return;
    }

    ma_data_source_uninit(&pNoise->ds);

    if (pNoise->_ownsHeap) {
        ma_free(pNoise->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_result ma_noise_set_amplitude(ma_noise* pNoise, double amplitude)
{
    if (pNoise == NULL) {
        return MA_INVALID_ARGS;
    }

    pNoise->config.amplitude = amplitude;
    return MA_SUCCESS;
}

MA_API ma_result ma_noise_set_seed(ma_noise* pNoise, ma_int32 seed)
{
    if (pNoise == NULL) {
        return MA_INVALID_ARGS;
    }

    pNoise->lcg.state = seed;
    return MA_SUCCESS;
}


MA_API ma_result ma_noise_set_type(ma_noise* pNoise, ma_noise_type type)
{
    if (pNoise == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    This function should never have been implemented in the first place. Changing the type dynamically is not
    supported. Instead you need to uninitialize and reinitialize a fresh `ma_noise` object. This function
    will be removed in version 0.12.
    */
    MA_ASSERT(MA_FALSE);
    (void)type;

    return MA_INVALID_OPERATION;
}

static MA_INLINE float ma_noise_f32_white(ma_noise* pNoise)
{
    return (float)(ma_lcg_rand_f64(&pNoise->lcg) * pNoise->config.amplitude);
}

static MA_INLINE ma_int16 ma_noise_s16_white(ma_noise* pNoise)
{
    return ma_pcm_sample_f32_to_s16(ma_noise_f32_white(pNoise));
}

static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__white(ma_noise* pNoise, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannel;
    const ma_uint32 channels = pNoise->config.channels;
    MA_ASSUME(channels > 0);

    if (pNoise->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_white(pNoise);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutF32[iFrame*channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutF32[iFrame*channels + iChannel] = ma_noise_f32_white(pNoise);
                }
            }
        }
    } else if (pNoise->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_int16 s = ma_noise_s16_white(pNoise);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutS16[iFrame*channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutS16[iFrame*channels + iChannel] = ma_noise_s16_white(pNoise);
                }
            }
        }
    } else {
        const ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
        const ma_uint32 bpf = bps * channels;

        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_white(pNoise);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    float s = ma_noise_f32_white(pNoise);
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        }
    }

    return frameCount;
}


static MA_INLINE unsigned int ma_tzcnt32(unsigned int x)
{
    unsigned int n;

    /* Special case for odd numbers since they should happen about half the time. */
    if (x & 0x1)  {
        return 0;
    }

    if (x == 0) {
        return sizeof(x) << 3;
    }

    n = 1;
    if ((x & 0x0000FFFF) == 0) { x >>= 16; n += 16; }
    if ((x & 0x000000FF) == 0) { x >>=  8; n +=  8; }
    if ((x & 0x0000000F) == 0) { x >>=  4; n +=  4; }
    if ((x & 0x00000003) == 0) { x >>=  2; n +=  2; }
    n -= x & 0x00000001;

    return n;
}

/*
Pink noise generation based on Tonic (public domain) with modifications. https://github.com/TonicAudio/Tonic/blob/master/src/Tonic/Noise.h

This is basically _the_ reference for pink noise from what I've found: http://www.firstpr.com.au/dsp/pink-noise/
*/
static MA_INLINE float ma_noise_f32_pink(ma_noise* pNoise, ma_uint32 iChannel)
{
    double result;
    double binPrev;
    double binNext;
    unsigned int ibin;

    ibin = ma_tzcnt32(pNoise->state.pink.counter[iChannel]) & (MA_PINK_NOISE_BIN_SIZE - 1);

    binPrev = pNoise->state.pink.bin[iChannel][ibin];
    binNext = ma_lcg_rand_f64(&pNoise->lcg);
    pNoise->state.pink.bin[iChannel][ibin] = binNext;

    pNoise->state.pink.accumulation[iChannel] += (binNext - binPrev);
    pNoise->state.pink.counter[iChannel]      += 1;

    result = (ma_lcg_rand_f64(&pNoise->lcg) + pNoise->state.pink.accumulation[iChannel]);
    result /= 10;

    return (float)(result * pNoise->config.amplitude);
}

static MA_INLINE ma_int16 ma_noise_s16_pink(ma_noise* pNoise, ma_uint32 iChannel)
{
    return ma_pcm_sample_f32_to_s16(ma_noise_f32_pink(pNoise, iChannel));
}

static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__pink(ma_noise* pNoise, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannel;
    const ma_uint32 channels = pNoise->config.channels;
    MA_ASSUME(channels > 0);

    if (pNoise->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_pink(pNoise, 0);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutF32[iFrame*channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutF32[iFrame*channels + iChannel] = ma_noise_f32_pink(pNoise, iChannel);
                }
            }
        }
    } else if (pNoise->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_int16 s = ma_noise_s16_pink(pNoise, 0);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutS16[iFrame*channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutS16[iFrame*channels + iChannel] = ma_noise_s16_pink(pNoise, iChannel);
                }
            }
        }
    } else {
        const ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
        const ma_uint32 bpf = bps * channels;

        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_pink(pNoise, 0);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    float s = ma_noise_f32_pink(pNoise, iChannel);
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        }
    }

    return frameCount;
}


static MA_INLINE float ma_noise_f32_brownian(ma_noise* pNoise, ma_uint32 iChannel)
{
    double result;

    result = (ma_lcg_rand_f64(&pNoise->lcg) + pNoise->state.brownian.accumulation[iChannel]);
    result /= 1.005; /* Don't escape the -1..1 range on average. */

    pNoise->state.brownian.accumulation[iChannel] = result;
    result /= 20;

    return (float)(result * pNoise->config.amplitude);
}

static MA_INLINE ma_int16 ma_noise_s16_brownian(ma_noise* pNoise, ma_uint32 iChannel)
{
    return ma_pcm_sample_f32_to_s16(ma_noise_f32_brownian(pNoise, iChannel));
}

static MA_INLINE ma_uint64 ma_noise_read_pcm_frames__brownian(ma_noise* pNoise, void* pFramesOut, ma_uint64 frameCount)
{
    ma_uint64 iFrame;
    ma_uint32 iChannel;
    const ma_uint32 channels = pNoise->config.channels;
    MA_ASSUME(channels > 0);

    if (pNoise->config.format == ma_format_f32) {
        float* pFramesOutF32 = (float*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_brownian(pNoise, 0);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutF32[iFrame*channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutF32[iFrame*channels + iChannel] = ma_noise_f32_brownian(pNoise, iChannel);
                }
            }
        }
    } else if (pNoise->config.format == ma_format_s16) {
        ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                ma_int16 s = ma_noise_s16_brownian(pNoise, 0);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutS16[iFrame*channels + iChannel] = s;
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    pFramesOutS16[iFrame*channels + iChannel] = ma_noise_s16_brownian(pNoise, iChannel);
                }
            }
        }
    } else {
        const ma_uint32 bps = ma_get_bytes_per_sample(pNoise->config.format);
        const ma_uint32 bpf = bps * channels;

        if (pNoise->config.duplicateChannels) {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                float s = ma_noise_f32_brownian(pNoise, 0);
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        } else {
            for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
                for (iChannel = 0; iChannel < channels; iChannel += 1) {
                    float s = ma_noise_f32_brownian(pNoise, iChannel);
                    ma_pcm_convert(ma_offset_ptr(pFramesOut, iFrame*bpf + iChannel*bps), pNoise->config.format, &s, ma_format_f32, 1, ma_dither_mode_none);
                }
            }
        }
    }

    return frameCount;
}

MA_API ma_result ma_noise_read_pcm_frames(ma_noise* pNoise, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_uint64 framesRead = 0;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    if (pNoise == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The output buffer is allowed to be NULL. Since we aren't tracking cursors or anything we can just do nothing and pretend to be successful. */
    if (pFramesOut == NULL) {
        framesRead = frameCount;
    } else {
        switch (pNoise->config.type) {
            case ma_noise_type_white:    framesRead = ma_noise_read_pcm_frames__white   (pNoise, pFramesOut, frameCount); break;
            case ma_noise_type_pink:     framesRead = ma_noise_read_pcm_frames__pink    (pNoise, pFramesOut, frameCount); break;
            case ma_noise_type_brownian: framesRead = ma_noise_read_pcm_frames__brownian(pNoise, pFramesOut, frameCount); break;
            default: return MA_INVALID_OPERATION;   /* Unknown noise type. */
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = framesRead;
    }

    return MA_SUCCESS;
}
#endif /* MA_NO_GENERATION */



#ifndef MA_NO_RESOURCE_MANAGER
#ifndef MA_RESOURCE_MANAGER_PAGE_SIZE_IN_MILLISECONDS
#define MA_RESOURCE_MANAGER_PAGE_SIZE_IN_MILLISECONDS   1000
#endif

#ifndef MA_JOB_TYPE_RESOURCE_MANAGER_QUEUE_CAPACITY
#define MA_JOB_TYPE_RESOURCE_MANAGER_QUEUE_CAPACITY          1024
#endif

MA_API ma_resource_manager_pipeline_notifications ma_resource_manager_pipeline_notifications_init(void)
{
    ma_resource_manager_pipeline_notifications notifications;

    MA_ZERO_OBJECT(&notifications);

    return notifications;
}

static void ma_resource_manager_pipeline_notifications_signal_all_notifications(const ma_resource_manager_pipeline_notifications* pPipelineNotifications)
{
    if (pPipelineNotifications == NULL) {
        return;
    }

    if (pPipelineNotifications->init.pNotification) { ma_async_notification_signal(pPipelineNotifications->init.pNotification); }
    if (pPipelineNotifications->done.pNotification) { ma_async_notification_signal(pPipelineNotifications->done.pNotification); }
}

static void ma_resource_manager_pipeline_notifications_acquire_all_fences(const ma_resource_manager_pipeline_notifications* pPipelineNotifications)
{
    if (pPipelineNotifications == NULL) {
        return;
    }

    if (pPipelineNotifications->init.pFence != NULL) { ma_fence_acquire(pPipelineNotifications->init.pFence); }
    if (pPipelineNotifications->done.pFence != NULL) { ma_fence_acquire(pPipelineNotifications->done.pFence); }
}

static void ma_resource_manager_pipeline_notifications_release_all_fences(const ma_resource_manager_pipeline_notifications* pPipelineNotifications)
{
    if (pPipelineNotifications == NULL) {
        return;
    }

    if (pPipelineNotifications->init.pFence != NULL) { ma_fence_release(pPipelineNotifications->init.pFence); }
    if (pPipelineNotifications->done.pFence != NULL) { ma_fence_release(pPipelineNotifications->done.pFence); }
}



#ifndef MA_DEFAULT_HASH_SEED
#define MA_DEFAULT_HASH_SEED    42
#endif

/* MurmurHash3. Based on code from https://github.com/PeterScott/murmur3/blob/master/murmur3.c (public domain). */
#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic push
    #if __GNUC__ >= 7
    #pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
    #endif
#endif

static MA_INLINE ma_uint32 ma_rotl32(ma_uint32 x, ma_int8 r)
{
    return (x << r) | (x >> (32 - r));
}

static MA_INLINE ma_uint32 ma_hash_getblock(const ma_uint32* blocks, int i)
{
    ma_uint32 block;

    /* Try silencing a sanitization warning about unaligned access by doing a memcpy() instead of assignment. */
    MA_COPY_MEMORY(&block, ma_offset_ptr(blocks, i * sizeof(block)), sizeof(block));

    if (ma_is_little_endian()) {
        return block;
    } else {
        return ma_swap_endian_uint32(block);
    }
}

static MA_INLINE ma_uint32 ma_hash_fmix32(ma_uint32 h)
{
    h ^= h >> 16;
    h *= 0x85ebca6b;
    h ^= h >> 13;
    h *= 0xc2b2ae35;
    h ^= h >> 16;

    return h;
}

static ma_uint32 ma_hash_32(const void* key, int len, ma_uint32 seed)
{
    const ma_uint8* data = (const ma_uint8*)key;
    const ma_uint32* blocks;
    const ma_uint8* tail;
    const int nblocks = len / 4;
    ma_uint32 h1 = seed;
    ma_uint32 c1 = 0xcc9e2d51;
    ma_uint32 c2 = 0x1b873593;
    ma_uint32 k1;
    int i;

    blocks = (const ma_uint32 *)(data + nblocks*4);

    for(i = -nblocks; i; i++) {
        k1 = ma_hash_getblock(blocks,i);

        k1 *= c1;
        k1 = ma_rotl32(k1, 15);
        k1 *= c2;

        h1 ^= k1;
        h1 = ma_rotl32(h1, 13);
        h1 = h1*5 + 0xe6546b64;
    }


    tail = (const ma_uint8*)(data + nblocks*4);

    k1 = 0;
    switch(len & 3) {
        case 3: k1 ^= tail[2] << 16;
        case 2: k1 ^= tail[1] << 8;
        case 1: k1 ^= tail[0];
                k1 *= c1; k1 = ma_rotl32(k1, 15); k1 *= c2; h1 ^= k1;
    };


    h1 ^= len;
    h1  = ma_hash_fmix32(h1);

    return h1;
}

#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic push
#endif
/* End MurmurHash3 */

static ma_uint32 ma_hash_string_32(const char* str)
{
    return ma_hash_32(str, (int)strlen(str), MA_DEFAULT_HASH_SEED);
}

static ma_uint32 ma_hash_string_w_32(const wchar_t* str)
{
    return ma_hash_32(str, (int)wcslen(str) * sizeof(*str), MA_DEFAULT_HASH_SEED);
}




/*
Basic BST Functions
*/
static ma_result ma_resource_manager_data_buffer_node_search(ma_resource_manager* pResourceManager, ma_uint32 hashedName32, ma_resource_manager_data_buffer_node** ppDataBufferNode)
{
    ma_resource_manager_data_buffer_node* pCurrentNode;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(ppDataBufferNode != NULL);

    pCurrentNode = pResourceManager->pRootDataBufferNode;
    while (pCurrentNode != NULL) {
        if (hashedName32 == pCurrentNode->hashedName32) {
            break;  /* Found. */
        } else if (hashedName32 < pCurrentNode->hashedName32) {
            pCurrentNode = pCurrentNode->pChildLo;
        } else {
            pCurrentNode = pCurrentNode->pChildHi;
        }
    }

    *ppDataBufferNode = pCurrentNode;

    if (pCurrentNode == NULL) {
        return MA_DOES_NOT_EXIST;
    } else {
        return MA_SUCCESS;
    }
}

static ma_result ma_resource_manager_data_buffer_node_insert_point(ma_resource_manager* pResourceManager, ma_uint32 hashedName32, ma_resource_manager_data_buffer_node** ppInsertPoint)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager_data_buffer_node* pCurrentNode;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(ppInsertPoint    != NULL);

    *ppInsertPoint = NULL;

    if (pResourceManager->pRootDataBufferNode == NULL) {
        return MA_SUCCESS;  /* No items. */
    }

    /* We need to find the node that will become the parent of the new node. If a node is found that already has the same hashed name we need to return MA_ALREADY_EXISTS. */
    pCurrentNode = pResourceManager->pRootDataBufferNode;
    while (pCurrentNode != NULL) {
        if (hashedName32 == pCurrentNode->hashedName32) {
            result = MA_ALREADY_EXISTS;
            break;
        } else {
            if (hashedName32 < pCurrentNode->hashedName32) {
                if (pCurrentNode->pChildLo == NULL) {
                    result = MA_SUCCESS;
                    break;
                } else {
                    pCurrentNode = pCurrentNode->pChildLo;
                }
            } else {
                if (pCurrentNode->pChildHi == NULL) {
                    result = MA_SUCCESS;
                    break;
                } else {
                    pCurrentNode = pCurrentNode->pChildHi;
                }
            }
        }
    }

    *ppInsertPoint = pCurrentNode;
    return result;
}

static ma_result ma_resource_manager_data_buffer_node_insert_at(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, ma_resource_manager_data_buffer_node* pInsertPoint)
{
    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);

    /* The key must have been set before calling this function. */
    MA_ASSERT(pDataBufferNode->hashedName32 != 0);

    if (pInsertPoint == NULL) {
        /* It's the first node. */
        pResourceManager->pRootDataBufferNode = pDataBufferNode;
    } else {
        /* It's not the first node. It needs to be inserted. */
        if (pDataBufferNode->hashedName32 < pInsertPoint->hashedName32) {
            MA_ASSERT(pInsertPoint->pChildLo == NULL);
            pInsertPoint->pChildLo = pDataBufferNode;
        } else {
            MA_ASSERT(pInsertPoint->pChildHi == NULL);
            pInsertPoint->pChildHi = pDataBufferNode;
        }
    }

    pDataBufferNode->pParent = pInsertPoint;

    return MA_SUCCESS;
}

#if 0   /* Unused for now. */
static ma_result ma_resource_manager_data_buffer_node_insert(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    ma_result result;
    ma_resource_manager_data_buffer_node* pInsertPoint;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);

    result = ma_resource_manager_data_buffer_node_insert_point(pResourceManager, pDataBufferNode->hashedName32, &pInsertPoint);
    if (result != MA_SUCCESS) {
        return MA_INVALID_ARGS;
    }

    return ma_resource_manager_data_buffer_node_insert_at(pResourceManager, pDataBufferNode, pInsertPoint);
}
#endif

static MA_INLINE ma_resource_manager_data_buffer_node* ma_resource_manager_data_buffer_node_find_min(ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    ma_resource_manager_data_buffer_node* pCurrentNode;

    MA_ASSERT(pDataBufferNode != NULL);

    pCurrentNode = pDataBufferNode;
    while (pCurrentNode->pChildLo != NULL) {
        pCurrentNode = pCurrentNode->pChildLo;
    }

    return pCurrentNode;
}

static MA_INLINE ma_resource_manager_data_buffer_node* ma_resource_manager_data_buffer_node_find_max(ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    ma_resource_manager_data_buffer_node* pCurrentNode;

    MA_ASSERT(pDataBufferNode != NULL);

    pCurrentNode = pDataBufferNode;
    while (pCurrentNode->pChildHi != NULL) {
        pCurrentNode = pCurrentNode->pChildHi;
    }

    return pCurrentNode;
}

static MA_INLINE ma_resource_manager_data_buffer_node* ma_resource_manager_data_buffer_node_find_inorder_successor(ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    MA_ASSERT(pDataBufferNode           != NULL);
    MA_ASSERT(pDataBufferNode->pChildHi != NULL);

    return ma_resource_manager_data_buffer_node_find_min(pDataBufferNode->pChildHi);
}

static MA_INLINE ma_resource_manager_data_buffer_node* ma_resource_manager_data_buffer_node_find_inorder_predecessor(ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    MA_ASSERT(pDataBufferNode           != NULL);
    MA_ASSERT(pDataBufferNode->pChildLo != NULL);

    return ma_resource_manager_data_buffer_node_find_max(pDataBufferNode->pChildLo);
}

static ma_result ma_resource_manager_data_buffer_node_remove(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);

    if (pDataBufferNode->pChildLo == NULL) {
        if (pDataBufferNode->pChildHi == NULL) {
            /* Simple case - deleting a buffer with no children. */
            if (pDataBufferNode->pParent == NULL) {
                MA_ASSERT(pResourceManager->pRootDataBufferNode == pDataBufferNode);    /* There is only a single buffer in the tree which should be equal to the root node. */
                pResourceManager->pRootDataBufferNode = NULL;
            } else {
                if (pDataBufferNode->pParent->pChildLo == pDataBufferNode) {
                    pDataBufferNode->pParent->pChildLo = NULL;
                } else {
                    pDataBufferNode->pParent->pChildHi = NULL;
                }
            }
        } else {
            /* Node has one child - pChildHi != NULL. */
            pDataBufferNode->pChildHi->pParent = pDataBufferNode->pParent;

            if (pDataBufferNode->pParent == NULL) {
                MA_ASSERT(pResourceManager->pRootDataBufferNode == pDataBufferNode);
                pResourceManager->pRootDataBufferNode = pDataBufferNode->pChildHi;
            } else {
                if (pDataBufferNode->pParent->pChildLo == pDataBufferNode) {
                    pDataBufferNode->pParent->pChildLo = pDataBufferNode->pChildHi;
                } else {
                    pDataBufferNode->pParent->pChildHi = pDataBufferNode->pChildHi;
                }
            }
        }
    } else {
        if (pDataBufferNode->pChildHi == NULL) {
            /* Node has one child - pChildLo != NULL. */
            pDataBufferNode->pChildLo->pParent = pDataBufferNode->pParent;

            if (pDataBufferNode->pParent == NULL) {
                MA_ASSERT(pResourceManager->pRootDataBufferNode == pDataBufferNode);
                pResourceManager->pRootDataBufferNode = pDataBufferNode->pChildLo;
            } else {
                if (pDataBufferNode->pParent->pChildLo == pDataBufferNode) {
                    pDataBufferNode->pParent->pChildLo = pDataBufferNode->pChildLo;
                } else {
                    pDataBufferNode->pParent->pChildHi = pDataBufferNode->pChildLo;
                }
            }
        } else {
            /* Complex case - deleting a node with two children. */
            ma_resource_manager_data_buffer_node* pReplacementDataBufferNode;

            /* For now we are just going to use the in-order successor as the replacement, but we may want to try to keep this balanced by switching between the two. */
            pReplacementDataBufferNode = ma_resource_manager_data_buffer_node_find_inorder_successor(pDataBufferNode);
            MA_ASSERT(pReplacementDataBufferNode != NULL);

            /*
            Now that we have our replacement node we can make the change. The simple way to do this would be to just exchange the values, and then remove the replacement
            node, however we track specific nodes via pointers which means we can't just swap out the values. We need to instead just change the pointers around. The
            replacement node should have at most 1 child. Therefore, we can detach it in terms of our simpler cases above. What we're essentially doing is detaching the
            replacement node and reinserting it into the same position as the deleted node.
            */
            MA_ASSERT(pReplacementDataBufferNode->pParent  != NULL);  /* The replacement node should never be the root which means it should always have a parent. */
            MA_ASSERT(pReplacementDataBufferNode->pChildLo == NULL);  /* Because we used in-order successor. This would be pChildHi == NULL if we used in-order predecessor. */

            if (pReplacementDataBufferNode->pChildHi == NULL) {
                if (pReplacementDataBufferNode->pParent->pChildLo == pReplacementDataBufferNode) {
                    pReplacementDataBufferNode->pParent->pChildLo = NULL;
                } else {
                    pReplacementDataBufferNode->pParent->pChildHi = NULL;
                }
            } else {
                pReplacementDataBufferNode->pChildHi->pParent = pReplacementDataBufferNode->pParent;
                if (pReplacementDataBufferNode->pParent->pChildLo == pReplacementDataBufferNode) {
                    pReplacementDataBufferNode->pParent->pChildLo = pReplacementDataBufferNode->pChildHi;
                } else {
                    pReplacementDataBufferNode->pParent->pChildHi = pReplacementDataBufferNode->pChildHi;
                }
            }


            /* The replacement node has essentially been detached from the binary tree, so now we need to replace the old data buffer with it. The first thing to update is the parent */
            if (pDataBufferNode->pParent != NULL) {
                if (pDataBufferNode->pParent->pChildLo == pDataBufferNode) {
                    pDataBufferNode->pParent->pChildLo = pReplacementDataBufferNode;
                } else {
                    pDataBufferNode->pParent->pChildHi = pReplacementDataBufferNode;
                }
            }

            /* Now need to update the replacement node's pointers. */
            pReplacementDataBufferNode->pParent  = pDataBufferNode->pParent;
            pReplacementDataBufferNode->pChildLo = pDataBufferNode->pChildLo;
            pReplacementDataBufferNode->pChildHi = pDataBufferNode->pChildHi;

            /* Now the children of the replacement node need to have their parent pointers updated. */
            if (pReplacementDataBufferNode->pChildLo != NULL) {
                pReplacementDataBufferNode->pChildLo->pParent = pReplacementDataBufferNode;
            }
            if (pReplacementDataBufferNode->pChildHi != NULL) {
                pReplacementDataBufferNode->pChildHi->pParent = pReplacementDataBufferNode;
            }

            /* Now the root node needs to be updated. */
            if (pResourceManager->pRootDataBufferNode == pDataBufferNode) {
                pResourceManager->pRootDataBufferNode = pReplacementDataBufferNode;
            }
        }
    }

    return MA_SUCCESS;
}

#if 0   /* Unused for now. */
static ma_result ma_resource_manager_data_buffer_node_remove_by_key(ma_resource_manager* pResourceManager, ma_uint32 hashedName32)
{
    ma_result result;
    ma_resource_manager_data_buffer_node* pDataBufferNode;

    result = ma_resource_manager_data_buffer_search(pResourceManager, hashedName32, &pDataBufferNode);
    if (result != MA_SUCCESS) {
        return result;  /* Could not find the data buffer. */
    }

    return ma_resource_manager_data_buffer_remove(pResourceManager, pDataBufferNode);
}
#endif

static ma_resource_manager_data_supply_type ma_resource_manager_data_buffer_node_get_data_supply_type(ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    return (ma_resource_manager_data_supply_type)ma_atomic_load_i32(&pDataBufferNode->data.type);
}

static void ma_resource_manager_data_buffer_node_set_data_supply_type(ma_resource_manager_data_buffer_node* pDataBufferNode, ma_resource_manager_data_supply_type supplyType)
{
    ma_atomic_exchange_i32(&pDataBufferNode->data.type, supplyType);
}

static ma_result ma_resource_manager_data_buffer_node_increment_ref(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, ma_uint32* pNewRefCount)
{
    ma_uint32 refCount;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);

    (void)pResourceManager;

    refCount = ma_atomic_fetch_add_32(&pDataBufferNode->refCount, 1) + 1;

    if (pNewRefCount != NULL) {
        *pNewRefCount = refCount;
    }

    return MA_SUCCESS;
}

static ma_result ma_resource_manager_data_buffer_node_decrement_ref(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, ma_uint32* pNewRefCount)
{
    ma_uint32 refCount;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);

    (void)pResourceManager;

    refCount = ma_atomic_fetch_sub_32(&pDataBufferNode->refCount, 1) - 1;

    if (pNewRefCount != NULL) {
        *pNewRefCount = refCount;
    }

    return MA_SUCCESS;
}

static void ma_resource_manager_data_buffer_node_free(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);

    if (pDataBufferNode->isDataOwnedByResourceManager) {
        if (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBufferNode) == ma_resource_manager_data_supply_type_encoded) {
            ma_free((void*)pDataBufferNode->data.backend.encoded.pData, &pResourceManager->config.allocationCallbacks);
            pDataBufferNode->data.backend.encoded.pData       = NULL;
            pDataBufferNode->data.backend.encoded.sizeInBytes = 0;
        } else if (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBufferNode) == ma_resource_manager_data_supply_type_decoded) {
            ma_free((void*)pDataBufferNode->data.backend.decoded.pData, &pResourceManager->config.allocationCallbacks);
            pDataBufferNode->data.backend.decoded.pData           = NULL;
            pDataBufferNode->data.backend.decoded.totalFrameCount = 0;
        } else if (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBufferNode) == ma_resource_manager_data_supply_type_decoded_paged) {
            ma_paged_audio_buffer_data_uninit(&pDataBufferNode->data.backend.decodedPaged.data, &pResourceManager->config.allocationCallbacks);
        } else {
            /* Should never hit this if the node was successfully initialized. */
            MA_ASSERT(pDataBufferNode->result != MA_SUCCESS);
        }
    }

    /* The data buffer itself needs to be freed. */
    ma_free(pDataBufferNode, &pResourceManager->config.allocationCallbacks);
}

static ma_result ma_resource_manager_data_buffer_node_result(const ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    MA_ASSERT(pDataBufferNode != NULL);

    return (ma_result)ma_atomic_load_i32((ma_result*)&pDataBufferNode->result);    /* Need a naughty const-cast here. */
}


static ma_bool32 ma_resource_manager_is_threading_enabled(const ma_resource_manager* pResourceManager)
{
    MA_ASSERT(pResourceManager != NULL);

    return (pResourceManager->config.flags & MA_RESOURCE_MANAGER_FLAG_NO_THREADING) == 0;
}


typedef struct
{
    union
    {
        ma_async_notification_event e;
        ma_async_notification_poll p;
    } backend;  /* Must be the first member. */
    ma_resource_manager* pResourceManager;
} ma_resource_manager_inline_notification;

static ma_result ma_resource_manager_inline_notification_init(ma_resource_manager* pResourceManager, ma_resource_manager_inline_notification* pNotification)
{
    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pNotification    != NULL);

    pNotification->pResourceManager = pResourceManager;

    if (ma_resource_manager_is_threading_enabled(pResourceManager)) {
        return ma_async_notification_event_init(&pNotification->backend.e);
    } else {
        return ma_async_notification_poll_init(&pNotification->backend.p);
    }
}

static void ma_resource_manager_inline_notification_uninit(ma_resource_manager_inline_notification* pNotification)
{
    MA_ASSERT(pNotification != NULL);

    if (ma_resource_manager_is_threading_enabled(pNotification->pResourceManager)) {
        ma_async_notification_event_uninit(&pNotification->backend.e);
    } else {
        /* No need to uninitialize a polling notification. */
    }
}

static void ma_resource_manager_inline_notification_wait(ma_resource_manager_inline_notification* pNotification)
{
    MA_ASSERT(pNotification != NULL);

    if (ma_resource_manager_is_threading_enabled(pNotification->pResourceManager)) {
        ma_async_notification_event_wait(&pNotification->backend.e);
    } else {
        while (ma_async_notification_poll_is_signalled(&pNotification->backend.p) == MA_FALSE) {
            ma_result result = ma_resource_manager_process_next_job(pNotification->pResourceManager);
            if (result == MA_NO_DATA_AVAILABLE || result == MA_CANCELLED) {
                break;
            }
        }
    }
}

static void ma_resource_manager_inline_notification_wait_and_uninit(ma_resource_manager_inline_notification* pNotification)
{
    ma_resource_manager_inline_notification_wait(pNotification);
    ma_resource_manager_inline_notification_uninit(pNotification);
}


static void ma_resource_manager_data_buffer_bst_lock(ma_resource_manager* pResourceManager)
{
    MA_ASSERT(pResourceManager != NULL);

    if (ma_resource_manager_is_threading_enabled(pResourceManager)) {
        #ifndef MA_NO_THREADING
        {
            ma_mutex_lock(&pResourceManager->dataBufferBSTLock);
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never hit this. */
        }
        #endif
    } else {
        /* Threading not enabled. Do nothing. */
    }
}

static void ma_resource_manager_data_buffer_bst_unlock(ma_resource_manager* pResourceManager)
{
    MA_ASSERT(pResourceManager != NULL);

    if (ma_resource_manager_is_threading_enabled(pResourceManager)) {
        #ifndef MA_NO_THREADING
        {
            ma_mutex_unlock(&pResourceManager->dataBufferBSTLock);
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never hit this. */
        }
        #endif
    } else {
        /* Threading not enabled. Do nothing. */
    }
}

#ifndef MA_NO_THREADING
static ma_thread_result MA_THREADCALL ma_resource_manager_job_thread(void* pUserData)
{
    ma_resource_manager* pResourceManager = (ma_resource_manager*)pUserData;
    MA_ASSERT(pResourceManager != NULL);

    for (;;) {
        ma_result result;
        ma_job job;

        result = ma_resource_manager_next_job(pResourceManager, &job);
        if (result != MA_SUCCESS) {
            break;
        }

        /* Terminate if we got a quit message. */
        if (job.toc.breakup.code == MA_JOB_TYPE_QUIT) {
            break;
        }

        ma_job_process(&job);
    }

    return (ma_thread_result)0;
}
#endif

MA_API ma_resource_manager_config ma_resource_manager_config_init(void)
{
    ma_resource_manager_config config;

    MA_ZERO_OBJECT(&config);
    config.decodedFormat     = ma_format_unknown;
    config.decodedChannels   = 0;
    config.decodedSampleRate = 0;
    config.jobThreadCount    = 1;   /* A single miniaudio-managed job thread by default. */
    config.jobQueueCapacity  = MA_JOB_TYPE_RESOURCE_MANAGER_QUEUE_CAPACITY;

    /* Flags. */
    config.flags = 0;
    #ifdef MA_NO_THREADING
    {
        /* Threading is disabled at compile time so disable threading at runtime as well by default. */
        config.flags |= MA_RESOURCE_MANAGER_FLAG_NO_THREADING;
        config.jobThreadCount = 0;
    }
    #endif

    return config;
}


MA_API ma_result ma_resource_manager_init(const ma_resource_manager_config* pConfig, ma_resource_manager* pResourceManager)
{
    ma_result result;
    ma_job_queue_config jobQueueConfig;

    if (pResourceManager == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pResourceManager);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    #ifndef MA_NO_THREADING
    {
        if (pConfig->jobThreadCount > ma_countof(pResourceManager->jobThreads)) {
            return MA_INVALID_ARGS; /* Requesting too many job threads. */
        }
    }
    #endif

    pResourceManager->config = *pConfig;
    ma_allocation_callbacks_init_copy(&pResourceManager->config.allocationCallbacks, &pConfig->allocationCallbacks);

    /* Get the log set up early so we can start using it as soon as possible. */
    if (pResourceManager->config.pLog == NULL) {
        result = ma_log_init(&pResourceManager->config.allocationCallbacks, &pResourceManager->log);
        if (result == MA_SUCCESS) {
            pResourceManager->config.pLog = &pResourceManager->log;
        } else {
            pResourceManager->config.pLog = NULL;   /* Logging is unavailable. */
        }
    }

    if (pResourceManager->config.pVFS == NULL) {
        result = ma_default_vfs_init(&pResourceManager->defaultVFS, &pResourceManager->config.allocationCallbacks);
        if (result != MA_SUCCESS) {
            return result;  /* Failed to initialize the default file system. */
        }

        pResourceManager->config.pVFS = &pResourceManager->defaultVFS;
    }

    /* If threading has been disabled at compile time, enforce it at run time as well. */
    #ifdef MA_NO_THREADING
    {
        pResourceManager->config.flags |= MA_RESOURCE_MANAGER_FLAG_NO_THREADING;
    }
    #endif

    /* We need to force MA_RESOURCE_MANAGER_FLAG_NON_BLOCKING if MA_RESOURCE_MANAGER_FLAG_NO_THREADING is set. */
    if ((pResourceManager->config.flags & MA_RESOURCE_MANAGER_FLAG_NO_THREADING) != 0) {
        pResourceManager->config.flags |= MA_RESOURCE_MANAGER_FLAG_NON_BLOCKING;

        /* We cannot allow job threads when MA_RESOURCE_MANAGER_FLAG_NO_THREADING has been set. This is an invalid use case. */
        if (pResourceManager->config.jobThreadCount > 0) {
            return MA_INVALID_ARGS;
        }
    }

    /* Job queue. */
    jobQueueConfig.capacity = pResourceManager->config.jobQueueCapacity;
    jobQueueConfig.flags    = 0;
    if ((pResourceManager->config.flags & MA_RESOURCE_MANAGER_FLAG_NON_BLOCKING) != 0) {
        if (pResourceManager->config.jobThreadCount > 0) {
            return MA_INVALID_ARGS; /* Non-blocking mode is only valid for self-managed job threads. */
        }

        jobQueueConfig.flags |= MA_JOB_QUEUE_FLAG_NON_BLOCKING;
    }

    result = ma_job_queue_init(&jobQueueConfig, &pResourceManager->config.allocationCallbacks, &pResourceManager->jobQueue);
    if (result != MA_SUCCESS) {
        return result;
    }


    /* Custom decoding backends. */
    if (pConfig->ppCustomDecodingBackendVTables != NULL && pConfig->customDecodingBackendCount > 0) {
        size_t sizeInBytes = sizeof(*pResourceManager->config.ppCustomDecodingBackendVTables) * pConfig->customDecodingBackendCount;
        ma_decoding_backend_vtable** ppCustomDecodingBackendVTables;

        ppCustomDecodingBackendVTables = (ma_decoding_backend_vtable**)ma_malloc(sizeInBytes, &pResourceManager->config.allocationCallbacks);
        if (pResourceManager->config.ppCustomDecodingBackendVTables == NULL) {
            ma_job_queue_uninit(&pResourceManager->jobQueue, &pResourceManager->config.allocationCallbacks);
            return MA_OUT_OF_MEMORY;
        }

        MA_COPY_MEMORY(ppCustomDecodingBackendVTables, pConfig->ppCustomDecodingBackendVTables, sizeInBytes);

        pResourceManager->config.ppCustomDecodingBackendVTables = ppCustomDecodingBackendVTables;
        pResourceManager->config.customDecodingBackendCount     = pConfig->customDecodingBackendCount;
        pResourceManager->config.pCustomDecodingBackendUserData = pConfig->pCustomDecodingBackendUserData;
    }



    /* Here is where we initialize our threading stuff. We don't do this if we don't support threading. */
    if (ma_resource_manager_is_threading_enabled(pResourceManager)) {
        #ifndef MA_NO_THREADING
        {
            ma_uint32 iJobThread;

            /* Data buffer lock. */
            result = ma_mutex_init(&pResourceManager->dataBufferBSTLock);
            if (result != MA_SUCCESS) {
                ma_job_queue_uninit(&pResourceManager->jobQueue, &pResourceManager->config.allocationCallbacks);
                return result;
            }

            /* Create the job threads last to ensure the threads has access to valid data. */
            for (iJobThread = 0; iJobThread < pResourceManager->config.jobThreadCount; iJobThread += 1) {
                result = ma_thread_create(&pResourceManager->jobThreads[iJobThread], ma_thread_priority_normal, pResourceManager->config.jobThreadStackSize, ma_resource_manager_job_thread, pResourceManager, &pResourceManager->config.allocationCallbacks);
                if (result != MA_SUCCESS) {
                    ma_mutex_uninit(&pResourceManager->dataBufferBSTLock);
                    ma_job_queue_uninit(&pResourceManager->jobQueue, &pResourceManager->config.allocationCallbacks);
                    return result;
                }
            }
        }
        #else
        {
            /* Threading is disabled at compile time. We should never get here because validation checks should have already been performed. */
            MA_ASSERT(MA_FALSE);
        }
        #endif
    }

    return MA_SUCCESS;
}


static void ma_resource_manager_delete_all_data_buffer_nodes(ma_resource_manager* pResourceManager)
{
    MA_ASSERT(pResourceManager);

    /* If everything was done properly, there shouldn't be any active data buffers. */
    while (pResourceManager->pRootDataBufferNode != NULL) {
        ma_resource_manager_data_buffer_node* pDataBufferNode = pResourceManager->pRootDataBufferNode;
        ma_resource_manager_data_buffer_node_remove(pResourceManager, pDataBufferNode);

        /* The data buffer has been removed from the BST, so now we need to free its data. */
        ma_resource_manager_data_buffer_node_free(pResourceManager, pDataBufferNode);
    }
}

MA_API void ma_resource_manager_uninit(ma_resource_manager* pResourceManager)
{
    if (pResourceManager == NULL) {
        return;
    }

    /*
    Job threads need to be killed first. To do this we need to post a quit message to the message queue and then wait for the thread. The quit message will never be removed from the
    queue which means it will never not be returned after being encountered for the first time which means all threads will eventually receive it.
    */
    ma_resource_manager_post_job_quit(pResourceManager);

    /* Wait for every job to finish before continuing to ensure nothing is sill trying to access any of our objects below. */
    if (ma_resource_manager_is_threading_enabled(pResourceManager)) {
        #ifndef MA_NO_THREADING
        {
            ma_uint32 iJobThread;

            for (iJobThread = 0; iJobThread < pResourceManager->config.jobThreadCount; iJobThread += 1) {
                ma_thread_wait(&pResourceManager->jobThreads[iJobThread]);
            }
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never hit this. */
        }
        #endif
    }

    /* At this point the thread should have returned and no other thread should be accessing our data. We can now delete all data buffers. */
    ma_resource_manager_delete_all_data_buffer_nodes(pResourceManager);

    /* The job queue is no longer needed. */
    ma_job_queue_uninit(&pResourceManager->jobQueue, &pResourceManager->config.allocationCallbacks);

    /* We're no longer doing anything with data buffers so the lock can now be uninitialized. */
    if (ma_resource_manager_is_threading_enabled(pResourceManager)) {
        #ifndef MA_NO_THREADING
        {
            ma_mutex_uninit(&pResourceManager->dataBufferBSTLock);
        }
        #else
        {
            MA_ASSERT(MA_FALSE);    /* Should never hit this. */
        }
        #endif
    }

    ma_free((ma_decoding_backend_vtable**)pResourceManager->config.ppCustomDecodingBackendVTables, &pResourceManager->config.allocationCallbacks);  /* <-- Naughty const-cast, but this is safe. */

    if (pResourceManager->config.pLog == &pResourceManager->log) {
        ma_log_uninit(&pResourceManager->log);
    }
}

MA_API ma_log* ma_resource_manager_get_log(ma_resource_manager* pResourceManager)
{
    if (pResourceManager == NULL) {
        return NULL;
    }

    return pResourceManager->config.pLog;
}



MA_API ma_resource_manager_data_source_config ma_resource_manager_data_source_config_init(void)
{
    ma_resource_manager_data_source_config config;

    MA_ZERO_OBJECT(&config);
    config.rangeBegInPCMFrames     = MA_DATA_SOURCE_DEFAULT_RANGE_BEG;
    config.rangeEndInPCMFrames     = MA_DATA_SOURCE_DEFAULT_RANGE_END;
    config.loopPointBegInPCMFrames = MA_DATA_SOURCE_DEFAULT_LOOP_POINT_BEG;
    config.loopPointEndInPCMFrames = MA_DATA_SOURCE_DEFAULT_LOOP_POINT_END;
    config.isLooping               = MA_FALSE;

    return config;
}


static ma_decoder_config ma_resource_manager__init_decoder_config(ma_resource_manager* pResourceManager)
{
    ma_decoder_config config;

    config = ma_decoder_config_init(pResourceManager->config.decodedFormat, pResourceManager->config.decodedChannels, pResourceManager->config.decodedSampleRate);
    config.allocationCallbacks    = pResourceManager->config.allocationCallbacks;
    config.ppCustomBackendVTables = pResourceManager->config.ppCustomDecodingBackendVTables;
    config.customBackendCount     = pResourceManager->config.customDecodingBackendCount;
    config.pCustomBackendUserData = pResourceManager->config.pCustomDecodingBackendUserData;

    return config;
}

static ma_result ma_resource_manager__init_decoder(ma_resource_manager* pResourceManager, const char* pFilePath, const wchar_t* pFilePathW, ma_decoder* pDecoder)
{
    ma_result result;
    ma_decoder_config config;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pFilePath        != NULL || pFilePathW != NULL);
    MA_ASSERT(pDecoder         != NULL);

    config = ma_resource_manager__init_decoder_config(pResourceManager);

    if (pFilePath != NULL) {
        result = ma_decoder_init_vfs(pResourceManager->config.pVFS, pFilePath, &config, pDecoder);
        if (result != MA_SUCCESS) {
            ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Failed to load file \"%s\". %s.\n", pFilePath, ma_result_description(result));
            return result;
        }
    } else {
        result = ma_decoder_init_vfs_w(pResourceManager->config.pVFS, pFilePathW, &config, pDecoder);
        if (result != MA_SUCCESS) {
            #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(_MSC_VER)
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Failed to load file \"%ls\". %s.\n", pFilePathW, ma_result_description(result));
            #endif
            return result;
        }
    }

    return MA_SUCCESS;
}

static ma_bool32 ma_resource_manager_data_buffer_has_connector(ma_resource_manager_data_buffer* pDataBuffer)
{
    return ma_atomic_bool32_get(&pDataBuffer->isConnectorInitialized);
}

static ma_data_source* ma_resource_manager_data_buffer_get_connector(ma_resource_manager_data_buffer* pDataBuffer)
{
    if (ma_resource_manager_data_buffer_has_connector(pDataBuffer) == MA_FALSE) {
        return NULL;    /* Connector not yet initialized. */
    }

    switch (pDataBuffer->pNode->data.type)
    {
        case ma_resource_manager_data_supply_type_encoded:       return &pDataBuffer->connector.decoder;
        case ma_resource_manager_data_supply_type_decoded:       return &pDataBuffer->connector.buffer;
        case ma_resource_manager_data_supply_type_decoded_paged: return &pDataBuffer->connector.pagedBuffer;

        case ma_resource_manager_data_supply_type_unknown:
        default:
        {
            ma_log_postf(ma_resource_manager_get_log(pDataBuffer->pResourceManager), MA_LOG_LEVEL_ERROR, "Failed to retrieve data buffer connector. Unknown data supply type.\n");
            return NULL;
        };
    };
}

static ma_result ma_resource_manager_data_buffer_init_connector(ma_resource_manager_data_buffer* pDataBuffer, const ma_resource_manager_data_source_config* pConfig, ma_async_notification* pInitNotification, ma_fence* pInitFence)
{
    ma_result result;

    MA_ASSERT(pDataBuffer != NULL);
    MA_ASSERT(pConfig     != NULL);
    MA_ASSERT(ma_resource_manager_data_buffer_has_connector(pDataBuffer) == MA_FALSE);

    /* The underlying data buffer must be initialized before we'll be able to know how to initialize the backend. */
    result = ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode);
    if (result != MA_SUCCESS && result != MA_BUSY) {
        return result;  /* The data buffer is in an erroneous state. */
    }

    /*
    We need to initialize either a ma_decoder or an ma_audio_buffer depending on whether or not the backing data is encoded or decoded. These act as the
    "instance" to the data and are used to form the connection between underlying data buffer and the data source. If the data buffer is decoded, we can use
    an ma_audio_buffer. This enables us to use memory mapping when mixing which saves us a bit of data movement overhead.
    */
    switch (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode))
    {
        case ma_resource_manager_data_supply_type_encoded:          /* Connector is a decoder. */
        {
            ma_decoder_config config;
            config = ma_resource_manager__init_decoder_config(pDataBuffer->pResourceManager);
            result = ma_decoder_init_memory(pDataBuffer->pNode->data.backend.encoded.pData, pDataBuffer->pNode->data.backend.encoded.sizeInBytes, &config, &pDataBuffer->connector.decoder);
        } break;

        case ma_resource_manager_data_supply_type_decoded:          /* Connector is an audio buffer. */
        {
            ma_audio_buffer_config config;
            config = ma_audio_buffer_config_init(pDataBuffer->pNode->data.backend.decoded.format, pDataBuffer->pNode->data.backend.decoded.channels, pDataBuffer->pNode->data.backend.decoded.totalFrameCount, pDataBuffer->pNode->data.backend.decoded.pData, NULL);
            result = ma_audio_buffer_init(&config, &pDataBuffer->connector.buffer);
        } break;

        case ma_resource_manager_data_supply_type_decoded_paged:    /* Connector is a paged audio buffer. */
        {
            ma_paged_audio_buffer_config config;
            config = ma_paged_audio_buffer_config_init(&pDataBuffer->pNode->data.backend.decodedPaged.data);
            result = ma_paged_audio_buffer_init(&config, &pDataBuffer->connector.pagedBuffer);
        } break;

        case ma_resource_manager_data_supply_type_unknown:
        default:
        {
            /* Unknown data supply type. Should never happen. Need to post an error here. */
            return MA_INVALID_ARGS;
        };
    }

    /*
    Initialization of the connector is when we can fire the init notification. This will give the application access to
    the format/channels/rate of the data source.
    */
    if (result == MA_SUCCESS) {
        /*
        The resource manager supports the ability to set the range and loop settings via a config at
        initialization time. This results in an case where the ranges could be set explicitly via
        ma_data_source_set_*() before we get to this point here. If this happens, we'll end up
        hitting a case where we just override those settings which results in what feels like a bug.

        To address this we only change the relevant properties if they're not equal to defaults. If
        they're equal to defaults there's no need to change them anyway. If they're *not* set to the
        default values, we can assume the user has set the range and loop settings via the config. If
        they're doing their own calls to ma_data_source_set_*() in addition to setting them via the
        config, that's entirely on the caller and any synchronization issue becomes their problem.
        */
        if (pConfig->rangeBegInPCMFrames != MA_DATA_SOURCE_DEFAULT_RANGE_BEG || pConfig->rangeEndInPCMFrames != MA_DATA_SOURCE_DEFAULT_RANGE_END) {
            ma_data_source_set_range_in_pcm_frames(pDataBuffer, pConfig->rangeBegInPCMFrames, pConfig->rangeEndInPCMFrames);
        }

        if (pConfig->loopPointBegInPCMFrames != MA_DATA_SOURCE_DEFAULT_LOOP_POINT_BEG || pConfig->loopPointEndInPCMFrames != MA_DATA_SOURCE_DEFAULT_LOOP_POINT_END) {
            ma_data_source_set_loop_point_in_pcm_frames(pDataBuffer, pConfig->loopPointBegInPCMFrames, pConfig->loopPointEndInPCMFrames);
        }

        if (pConfig->isLooping != MA_FALSE) {
            ma_data_source_set_looping(pDataBuffer, pConfig->isLooping);
        }

        ma_atomic_bool32_set(&pDataBuffer->isConnectorInitialized, MA_TRUE);

        if (pInitNotification != NULL) {
            ma_async_notification_signal(pInitNotification);
        }

        if (pInitFence != NULL) {
            ma_fence_release(pInitFence);
        }
    }

    /* At this point the backend should be initialized. We do *not* want to set pDataSource->result here - that needs to be done at a higher level to ensure it's done as the last step. */
    return result;
}

static ma_result ma_resource_manager_data_buffer_uninit_connector(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer* pDataBuffer)
{
    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBuffer      != NULL);

    (void)pResourceManager;

    switch (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode))
    {
        case ma_resource_manager_data_supply_type_encoded:          /* Connector is a decoder. */
        {
            ma_decoder_uninit(&pDataBuffer->connector.decoder);
        } break;

        case ma_resource_manager_data_supply_type_decoded:          /* Connector is an audio buffer. */
        {
            ma_audio_buffer_uninit(&pDataBuffer->connector.buffer);
        } break;

        case ma_resource_manager_data_supply_type_decoded_paged:    /* Connector is a paged audio buffer. */
        {
            ma_paged_audio_buffer_uninit(&pDataBuffer->connector.pagedBuffer);
        } break;

        case ma_resource_manager_data_supply_type_unknown:
        default:
        {
            /* Unknown data supply type. Should never happen. Need to post an error here. */
            return MA_INVALID_ARGS;
        };
    }

    return MA_SUCCESS;
}

static ma_uint32 ma_resource_manager_data_buffer_node_next_execution_order(ma_resource_manager_data_buffer_node* pDataBufferNode)
{
    MA_ASSERT(pDataBufferNode != NULL);
    return ma_atomic_fetch_add_32(&pDataBufferNode->executionCounter, 1);
}

static ma_result ma_resource_manager_data_buffer_node_init_supply_encoded(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, const char* pFilePath, const wchar_t* pFilePathW)
{
    ma_result result;
    size_t dataSizeInBytes;
    void* pData;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);
    MA_ASSERT(pFilePath != NULL || pFilePathW != NULL);

    result = ma_vfs_open_and_read_file_ex(pResourceManager->config.pVFS, pFilePath, pFilePathW, &pData, &dataSizeInBytes, &pResourceManager->config.allocationCallbacks);
    if (result != MA_SUCCESS) {
        if (pFilePath != NULL) {
            ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Failed to load file \"%s\". %s.\n", pFilePath, ma_result_description(result));
        } else {
            #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(_MSC_VER)
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Failed to load file \"%ls\". %s.\n", pFilePathW, ma_result_description(result));
            #endif
        }

        return result;
    }

    pDataBufferNode->data.backend.encoded.pData       = pData;
    pDataBufferNode->data.backend.encoded.sizeInBytes = dataSizeInBytes;
    ma_resource_manager_data_buffer_node_set_data_supply_type(pDataBufferNode, ma_resource_manager_data_supply_type_encoded);  /* <-- Must be set last. */

    return MA_SUCCESS;
}

static ma_result ma_resource_manager_data_buffer_node_init_supply_decoded(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, const char* pFilePath, const wchar_t* pFilePathW, ma_uint32 flags, ma_decoder** ppDecoder)
{
    ma_result result = MA_SUCCESS;
    ma_decoder* pDecoder;
    ma_uint64 totalFrameCount;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);
    MA_ASSERT(ppDecoder         != NULL);
    MA_ASSERT(pFilePath != NULL || pFilePathW != NULL);

    *ppDecoder = NULL;  /* For safety. */

    pDecoder = (ma_decoder*)ma_malloc(sizeof(*pDecoder), &pResourceManager->config.allocationCallbacks);
    if (pDecoder == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_resource_manager__init_decoder(pResourceManager, pFilePath, pFilePathW, pDecoder);
    if (result != MA_SUCCESS) {
        ma_free(pDecoder, &pResourceManager->config.allocationCallbacks);
        return result;
    }

    /*
    At this point we have the decoder and we now need to initialize the data supply. This will
    be either a decoded buffer, or a decoded paged buffer. A regular buffer is just one big heap
    allocated buffer, whereas a paged buffer is a linked list of paged-sized buffers. The latter
    is used when the length of a sound is unknown until a full decode has been performed.
    */
    if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_UNKNOWN_LENGTH) == 0) {
        result = ma_decoder_get_length_in_pcm_frames(pDecoder, &totalFrameCount);
        if (result != MA_SUCCESS) {
            return result;
        }
    } else {
        totalFrameCount = 0;
    }

    if (totalFrameCount > 0) {
        /* It's a known length. The data supply is a regular decoded buffer. */
        ma_uint64 dataSizeInBytes;
        void* pData;

        dataSizeInBytes = totalFrameCount * ma_get_bytes_per_frame(pDecoder->outputFormat, pDecoder->outputChannels);
        if (dataSizeInBytes > MA_SIZE_MAX) {
            ma_decoder_uninit(pDecoder);
            ma_free(pDecoder, &pResourceManager->config.allocationCallbacks);
            return MA_TOO_BIG;
        }

        pData = ma_malloc((size_t)dataSizeInBytes, &pResourceManager->config.allocationCallbacks);
        if (pData == NULL) {
            ma_decoder_uninit(pDecoder);
            ma_free(pDecoder, &pResourceManager->config.allocationCallbacks);
            return MA_OUT_OF_MEMORY;
        }

        /* The buffer needs to be initialized to silence in case the caller reads from it. */
        ma_silence_pcm_frames(pData, totalFrameCount, pDecoder->outputFormat, pDecoder->outputChannels);

        /* Data has been allocated and the data supply can now be initialized. */
        pDataBufferNode->data.backend.decoded.pData             = pData;
        pDataBufferNode->data.backend.decoded.totalFrameCount   = totalFrameCount;
        pDataBufferNode->data.backend.decoded.format            = pDecoder->outputFormat;
        pDataBufferNode->data.backend.decoded.channels          = pDecoder->outputChannels;
        pDataBufferNode->data.backend.decoded.sampleRate        = pDecoder->outputSampleRate;
        pDataBufferNode->data.backend.decoded.decodedFrameCount = 0;
        ma_resource_manager_data_buffer_node_set_data_supply_type(pDataBufferNode, ma_resource_manager_data_supply_type_decoded);  /* <-- Must be set last. */
    } else {
        /*
        It's an unknown length. The data supply is a paged decoded buffer. Setting this up is
        actually easier than the non-paged decoded buffer because we just need to initialize
        a ma_paged_audio_buffer object.
        */
        result = ma_paged_audio_buffer_data_init(pDecoder->outputFormat, pDecoder->outputChannels, &pDataBufferNode->data.backend.decodedPaged.data);
        if (result != MA_SUCCESS) {
            ma_decoder_uninit(pDecoder);
            ma_free(pDecoder, &pResourceManager->config.allocationCallbacks);
            return result;
        }

        pDataBufferNode->data.backend.decodedPaged.sampleRate        = pDecoder->outputSampleRate;
        pDataBufferNode->data.backend.decodedPaged.decodedFrameCount = 0;
        ma_resource_manager_data_buffer_node_set_data_supply_type(pDataBufferNode, ma_resource_manager_data_supply_type_decoded_paged);  /* <-- Must be set last. */
    }

    *ppDecoder = pDecoder;

    return MA_SUCCESS;
}

static ma_result ma_resource_manager_data_buffer_node_decode_next_page(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, ma_decoder* pDecoder)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 pageSizeInFrames;
    ma_uint64 framesToTryReading;
    ma_uint64 framesRead;

    MA_ASSERT(pResourceManager != NULL);
    MA_ASSERT(pDataBufferNode  != NULL);
    MA_ASSERT(pDecoder         != NULL);

    /* We need to know the size of a page in frames to know how many frames to decode. */
    pageSizeInFrames = MA_RESOURCE_MANAGER_PAGE_SIZE_IN_MILLISECONDS * (pDecoder->outputSampleRate/1000);
    framesToTryReading = pageSizeInFrames;

    /*
    Here is where we do the decoding of the next page. We'll run a slightly different path depending
    on whether or not we're using a flat or paged buffer because the allocation of the page differs
    between the two. For a flat buffer it's an offset to an already-allocated buffer. For a paged
    buffer, we need to allocate a new page and attach it to the linked list.
    */
    switch (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBufferNode))
    {
        case ma_resource_manager_data_supply_type_decoded:
        {
            /* The destination buffer is an offset to the existing buffer. Don't read more than we originally retrieved when we first initialized the decoder. */
            void* pDst;
            ma_uint64 framesRemaining = pDataBufferNode->data.backend.decoded.totalFrameCount - pDataBufferNode->data.backend.decoded.decodedFrameCount;
            if (framesToTryReading > framesRemaining) {
                framesToTryReading = framesRemaining;
            }

            if (framesToTryReading > 0) {
                pDst = ma_offset_ptr(
                    pDataBufferNode->data.backend.decoded.pData,
                    pDataBufferNode->data.backend.decoded.decodedFrameCount * ma_get_bytes_per_frame(pDataBufferNode->data.backend.decoded.format, pDataBufferNode->data.backend.decoded.channels)
                );
                MA_ASSERT(pDst != NULL);

                result = ma_decoder_read_pcm_frames(pDecoder, pDst, framesToTryReading, &framesRead);
                if (framesRead > 0) {
                    pDataBufferNode->data.backend.decoded.decodedFrameCount += framesRead;
                }
            } else {
                framesRead = 0;
            }
        } break;

        case ma_resource_manager_data_supply_type_decoded_paged:
        {
            /* The destination buffer is a freshly allocated page. */
            ma_paged_audio_buffer_page* pPage;

            result = ma_paged_audio_buffer_data_allocate_page(&pDataBufferNode->data.backend.decodedPaged.data, framesToTryReading, NULL, &pResourceManager->config.allocationCallbacks, &pPage);
            if (result != MA_SUCCESS) {
                return result;
            }

            result = ma_decoder_read_pcm_frames(pDecoder, pPage->pAudioData, framesToTryReading, &framesRead);
            if (result == MA_SUCCESS && framesRead > 0) {
                pPage->sizeInFrames = framesRead;

                result = ma_paged_audio_buffer_data_append_page(&pDataBufferNode->data.backend.decodedPaged.data, pPage);
                if (result == MA_SUCCESS) {
                    pDataBufferNode->data.backend.decodedPaged.decodedFrameCount += framesRead;
                } else {
                    /* Failed to append the page. Just abort and set the status to MA_AT_END. */
                    ma_paged_audio_buffer_data_free_page(&pDataBufferNode->data.backend.decodedPaged.data, pPage, &pResourceManager->config.allocationCallbacks);
                    result = MA_AT_END;
                }
            } else {
                /* No frames were read. Free the page and just set the status to MA_AT_END. */
                ma_paged_audio_buffer_data_free_page(&pDataBufferNode->data.backend.decodedPaged.data, pPage, &pResourceManager->config.allocationCallbacks);
                result = MA_AT_END;
            }
        } break;

        case ma_resource_manager_data_supply_type_encoded:
        case ma_resource_manager_data_supply_type_unknown:
        default:
        {
            /* Unexpected data supply type. */
            ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_ERROR, "Unexpected data supply type (%d) when decoding page.", ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBufferNode));
            return MA_ERROR;
        };
    }

    if (result == MA_SUCCESS && framesRead == 0) {
        result = MA_AT_END;
    }

    return result;
}

static ma_result ma_resource_manager_data_buffer_node_acquire_critical_section(ma_resource_manager* pResourceManager, const char* pFilePath, const wchar_t* pFilePathW, ma_uint32 hashedName32, ma_uint32 flags, const ma_resource_manager_data_supply* pExistingData, ma_fence* pInitFence, ma_fence* pDoneFence, ma_resource_manager_inline_notification* pInitNotification, ma_resource_manager_data_buffer_node** ppDataBufferNode)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager_data_buffer_node* pDataBufferNode = NULL;
    ma_resource_manager_data_buffer_node* pInsertPoint;

    if (ppDataBufferNode != NULL) {
        *ppDataBufferNode = NULL;
    }

    result = ma_resource_manager_data_buffer_node_insert_point(pResourceManager, hashedName32, &pInsertPoint);
    if (result == MA_ALREADY_EXISTS) {
        /* The node already exists. We just need to increment the reference count. */
        pDataBufferNode = pInsertPoint;

        result = ma_resource_manager_data_buffer_node_increment_ref(pResourceManager, pDataBufferNode, NULL);
        if (result != MA_SUCCESS) {
            return result;  /* Should never happen. Failed to increment the reference count. */
        }

        result = MA_ALREADY_EXISTS;
        goto done;
    } else {
        /*
        The node does not already exist. We need to post a LOAD_DATA_BUFFER_NODE job here. This
        needs to be done inside the critical section to ensure an uninitialization of the node
        does not occur before initialization on another thread.
        */
        pDataBufferNode = (ma_resource_manager_data_buffer_node*)ma_malloc(sizeof(*pDataBufferNode), &pResourceManager->config.allocationCallbacks);
        if (pDataBufferNode == NULL) {
            return MA_OUT_OF_MEMORY;
        }

        MA_ZERO_OBJECT(pDataBufferNode);
        pDataBufferNode->hashedName32 = hashedName32;
        pDataBufferNode->refCount     = 1;        /* Always set to 1 by default (this is our first reference). */

        if (pExistingData == NULL) {
            pDataBufferNode->data.type    = ma_resource_manager_data_supply_type_unknown;    /* <-- We won't know this until we start decoding. */
            pDataBufferNode->result       = MA_BUSY;  /* Must be set to MA_BUSY before we leave the critical section, so might as well do it now. */
            pDataBufferNode->isDataOwnedByResourceManager = MA_TRUE;
        } else {
            pDataBufferNode->data         = *pExistingData;
            pDataBufferNode->result       = MA_SUCCESS;   /* Not loading asynchronously, so just set the status */
            pDataBufferNode->isDataOwnedByResourceManager = MA_FALSE;
        }

        result = ma_resource_manager_data_buffer_node_insert_at(pResourceManager, pDataBufferNode, pInsertPoint);
        if (result != MA_SUCCESS) {
            ma_free(pDataBufferNode, &pResourceManager->config.allocationCallbacks);
            return result;  /* Should never happen. Failed to insert the data buffer into the BST. */
        }

        /*
        Here is where we'll post the job, but only if we're loading asynchronously. If we're
        loading synchronously we'll defer loading to a later stage, outside of the critical
        section.
        */
        if (pDataBufferNode->isDataOwnedByResourceManager && (flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC) != 0) {
            /* Loading asynchronously. Post the job. */
            ma_job job;
            char* pFilePathCopy = NULL;
            wchar_t* pFilePathWCopy = NULL;

            /* We need a copy of the file path. We should probably make this more efficient, but for now we'll do a transient memory allocation. */
            if (pFilePath != NULL) {
                pFilePathCopy = ma_copy_string(pFilePath, &pResourceManager->config.allocationCallbacks);
            } else {
                pFilePathWCopy = ma_copy_string_w(pFilePathW, &pResourceManager->config.allocationCallbacks);
            }

            if (pFilePathCopy == NULL && pFilePathWCopy == NULL) {
                ma_resource_manager_data_buffer_node_remove(pResourceManager, pDataBufferNode);
                ma_free(pDataBufferNode, &pResourceManager->config.allocationCallbacks);
                return MA_OUT_OF_MEMORY;
            }

            if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                ma_resource_manager_inline_notification_init(pResourceManager, pInitNotification);
            }

            /* Acquire init and done fences before posting the job. These will be unacquired by the job thread. */
            if (pInitFence != NULL) { ma_fence_acquire(pInitFence); }
            if (pDoneFence != NULL) { ma_fence_acquire(pDoneFence); }

            /* We now have everything we need to post the job to the job thread. */
            job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_BUFFER_NODE);
            job.order = ma_resource_manager_data_buffer_node_next_execution_order(pDataBufferNode);
            job.data.resourceManager.loadDataBufferNode.pResourceManager  = pResourceManager;
            job.data.resourceManager.loadDataBufferNode.pDataBufferNode   = pDataBufferNode;
            job.data.resourceManager.loadDataBufferNode.pFilePath         = pFilePathCopy;
            job.data.resourceManager.loadDataBufferNode.pFilePathW        = pFilePathWCopy;
            job.data.resourceManager.loadDataBufferNode.flags             = flags;
            job.data.resourceManager.loadDataBufferNode.pInitNotification = ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) ? pInitNotification : NULL;
            job.data.resourceManager.loadDataBufferNode.pDoneNotification = NULL;
            job.data.resourceManager.loadDataBufferNode.pInitFence        = pInitFence;
            job.data.resourceManager.loadDataBufferNode.pDoneFence        = pDoneFence;

            if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                result = ma_job_process(&job);
            } else {
                result = ma_resource_manager_post_job(pResourceManager, &job);
            }

            if (result != MA_SUCCESS) {
                /* Failed to post job. Probably ran out of memory. */
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_ERROR, "Failed to post MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_BUFFER_NODE job. %s.\n", ma_result_description(result));

                /*
                Fences were acquired before posting the job, but since the job was not able to
                be posted, we need to make sure we release them so nothing gets stuck waiting.
                */
                if (pInitFence != NULL) { ma_fence_release(pInitFence); }
                if (pDoneFence != NULL) { ma_fence_release(pDoneFence); }

                if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                    ma_resource_manager_inline_notification_uninit(pInitNotification);
                } else {
                    /* These will have been freed by the job thread, but with WAIT_INIT they will already have happened since the job has already been handled. */
                    ma_free(pFilePathCopy,  &pResourceManager->config.allocationCallbacks);
                    ma_free(pFilePathWCopy, &pResourceManager->config.allocationCallbacks);
                }

                ma_resource_manager_data_buffer_node_remove(pResourceManager, pDataBufferNode);
                ma_free(pDataBufferNode, &pResourceManager->config.allocationCallbacks);

                return result;
            }
        }
    }

done:
    if (ppDataBufferNode != NULL) {
        *ppDataBufferNode = pDataBufferNode;
    }

    return result;
}

static ma_result ma_resource_manager_data_buffer_node_acquire(ma_resource_manager* pResourceManager, const char* pFilePath, const wchar_t* pFilePathW, ma_uint32 hashedName32, ma_uint32 flags, const ma_resource_manager_data_supply* pExistingData, ma_fence* pInitFence, ma_fence* pDoneFence, ma_resource_manager_data_buffer_node** ppDataBufferNode)
{
    ma_result result = MA_SUCCESS;
    ma_bool32 nodeAlreadyExists = MA_FALSE;
    ma_resource_manager_data_buffer_node* pDataBufferNode = NULL;
    ma_resource_manager_inline_notification initNotification;   /* Used when the WAIT_INIT flag is set. */

    if (ppDataBufferNode != NULL) {
        *ppDataBufferNode = NULL;   /* Safety. */
    }

    if (pResourceManager == NULL || (pFilePath == NULL && pFilePathW == NULL && hashedName32 == 0)) {
        return MA_INVALID_ARGS;
    }

    /* If we're specifying existing data, it must be valid. */
    if (pExistingData != NULL && pExistingData->type == ma_resource_manager_data_supply_type_unknown) {
        return MA_INVALID_ARGS;
    }

    /* If we don't support threading, remove the ASYNC flag to make the rest of this a bit simpler. */
    if (ma_resource_manager_is_threading_enabled(pResourceManager) == MA_FALSE) {
        flags &= ~MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC;
    }

    if (hashedName32 == 0) {
        if (pFilePath != NULL) {
            hashedName32 = ma_hash_string_32(pFilePath);
        } else {
            hashedName32 = ma_hash_string_w_32(pFilePathW);
        }
    }

    /*
    Here is where we either increment the node's reference count or allocate a new one and add it
    to the BST. When allocating a new node, we need to make sure the LOAD_DATA_BUFFER_NODE job is
    posted inside the critical section just in case the caller immediately uninitializes the node
    as this will ensure the FREE_DATA_BUFFER_NODE job is given an execution order such that the
    node is not uninitialized before initialization.
    */
    ma_resource_manager_data_buffer_bst_lock(pResourceManager);
    {
        result = ma_resource_manager_data_buffer_node_acquire_critical_section(pResourceManager, pFilePath, pFilePathW, hashedName32, flags, pExistingData, pInitFence, pDoneFence, &initNotification, &pDataBufferNode);
    }
    ma_resource_manager_data_buffer_bst_unlock(pResourceManager);

    if (result == MA_ALREADY_EXISTS) {
        nodeAlreadyExists = MA_TRUE;
        result = MA_SUCCESS;
    } else {
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    /*
    If we're loading synchronously, we'll need to load everything now. When loading asynchronously,
    a job will have been posted inside the BST critical section so that an uninitialization can be
    allocated an appropriate execution order thereby preventing it from being uninitialized before
    the node is initialized by the decoding thread(s).
    */
    if (nodeAlreadyExists == MA_FALSE) {    /* Don't need to try loading anything if the node already exists. */
        if (pFilePath == NULL && pFilePathW == NULL) {
            /*
            If this path is hit, it means a buffer is being copied (i.e. initialized from only the
            hashed name), but that node has been freed in the meantime, probably from some other
            thread. This is an invalid operation.
            */
            ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Cloning data buffer node failed because the source node was released. The source node must remain valid until the cloning has completed.\n");
            result = MA_INVALID_OPERATION;
            goto done;
        }

        if (pDataBufferNode->isDataOwnedByResourceManager) {
            if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC) == 0) {
                /* Loading synchronously. Load the sound in it's entirety here. */
                if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_DECODE) == 0) {
                    /* No decoding. This is the simple case - just store the file contents in memory. */
                    result = ma_resource_manager_data_buffer_node_init_supply_encoded(pResourceManager, pDataBufferNode, pFilePath, pFilePathW);
                    if (result != MA_SUCCESS) {
                        goto done;
                    }
                } else {
                    /* Decoding. We do this the same way as we do when loading asynchronously. */
                    ma_decoder* pDecoder;
                    result = ma_resource_manager_data_buffer_node_init_supply_decoded(pResourceManager, pDataBufferNode, pFilePath, pFilePathW, flags, &pDecoder);
                    if (result != MA_SUCCESS) {
                        goto done;
                    }

                    /* We have the decoder, now decode page by page just like we do when loading asynchronously. */
                    for (;;) {
                        /* Decode next page. */
                        result = ma_resource_manager_data_buffer_node_decode_next_page(pResourceManager, pDataBufferNode, pDecoder);
                        if (result != MA_SUCCESS) {
                            break;  /* Will return MA_AT_END when the last page has been decoded. */
                        }
                    }

                    /* Reaching the end needs to be considered successful. */
                    if (result == MA_AT_END) {
                        result  = MA_SUCCESS;
                    }

                    /*
                    At this point the data buffer is either fully decoded or some error occurred. Either
                    way, the decoder is no longer necessary.
                    */
                    ma_decoder_uninit(pDecoder);
                    ma_free(pDecoder, &pResourceManager->config.allocationCallbacks);
                }

                /* Getting here means we were successful. Make sure the status of the node is updated accordingly. */
                ma_atomic_exchange_i32(&pDataBufferNode->result, result);
            } else {
                /* Loading asynchronously. We may need to wait for initialization. */
                if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                    ma_resource_manager_inline_notification_wait(&initNotification);
                }
            }
        } else {
            /* The data is not managed by the resource manager so there's nothing else to do. */
            MA_ASSERT(pExistingData != NULL);
        }
    }

done:
    /* If we failed to initialize the data buffer we need to free it. */
    if (result != MA_SUCCESS) {
        if (nodeAlreadyExists == MA_FALSE) {
            ma_resource_manager_data_buffer_node_remove(pResourceManager, pDataBufferNode);
            ma_free(pDataBufferNode, &pResourceManager->config.allocationCallbacks);
        }
    }

    /*
    The init notification needs to be uninitialized. This will be used if the node does not already
    exist, and we've specified ASYNC | WAIT_INIT.
    */
    if (nodeAlreadyExists == MA_FALSE && pDataBufferNode->isDataOwnedByResourceManager && (flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC) != 0) {
        if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
            ma_resource_manager_inline_notification_uninit(&initNotification);
        }
    }

    if (ppDataBufferNode != NULL) {
        *ppDataBufferNode = pDataBufferNode;
    }

    return result;
}

static ma_result ma_resource_manager_data_buffer_node_unacquire(ma_resource_manager* pResourceManager, ma_resource_manager_data_buffer_node* pDataBufferNode, const char* pName, const wchar_t* pNameW)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 refCount = 0xFFFFFFFF; /* The new reference count of the node after decrementing. Initialize to non-0 to be safe we don't fall into the freeing path. */
    ma_uint32 hashedName32 = 0;

    if (pResourceManager == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pDataBufferNode == NULL) {
        if (pName == NULL && pNameW == NULL) {
            return MA_INVALID_ARGS;
        }

        if (pName != NULL) {
            hashedName32 = ma_hash_string_32(pName);
        } else {
            hashedName32 = ma_hash_string_w_32(pNameW);
        }
    }

    /*
    The first thing to do is decrement the reference counter of the node. Then, if the reference
    count is zero, we need to free the node. If the node is still in the process of loading, we'll
    need to post a job to the job queue to free the node. Otherwise we'll just do it here.
    */
    ma_resource_manager_data_buffer_bst_lock(pResourceManager);
    {
        /* Might need to find the node. Must be done inside the critical section. */
        if (pDataBufferNode == NULL) {
            result = ma_resource_manager_data_buffer_node_search(pResourceManager, hashedName32, &pDataBufferNode);
            if (result != MA_SUCCESS) {
                goto stage2;    /* Couldn't find the node. */
            }
        }

        result = ma_resource_manager_data_buffer_node_decrement_ref(pResourceManager, pDataBufferNode, &refCount);
        if (result != MA_SUCCESS) {
            goto stage2;    /* Should never happen. */
        }

        if (refCount == 0) {
            result = ma_resource_manager_data_buffer_node_remove(pResourceManager, pDataBufferNode);
            if (result != MA_SUCCESS) {
                goto stage2;  /* An error occurred when trying to remove the data buffer. This should never happen. */
            }
        }
    }
    ma_resource_manager_data_buffer_bst_unlock(pResourceManager);

stage2:
    if (result != MA_SUCCESS) {
        return result;
    }

    /*
    Here is where we need to free the node. We don't want to do this inside the critical section
    above because we want to keep that as small as possible for multi-threaded efficiency.
    */
    if (refCount == 0) {
        if (ma_resource_manager_data_buffer_node_result(pDataBufferNode) == MA_BUSY) {
            /* The sound is still loading. We need to delay the freeing of the node to a safe time. */
            ma_job job;

            /* We need to mark the node as unavailable for the sake of the resource manager worker threads. */
            ma_atomic_exchange_i32(&pDataBufferNode->result, MA_UNAVAILABLE);

            job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER_NODE);
            job.order = ma_resource_manager_data_buffer_node_next_execution_order(pDataBufferNode);
            job.data.resourceManager.freeDataBufferNode.pResourceManager = pResourceManager;
            job.data.resourceManager.freeDataBufferNode.pDataBufferNode  = pDataBufferNode;

            result = ma_resource_manager_post_job(pResourceManager, &job);
            if (result != MA_SUCCESS) {
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_ERROR, "Failed to post MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER_NODE job. %s.\n", ma_result_description(result));
                return result;
            }

            /* If we don't support threading, process the job queue here. */
            if (ma_resource_manager_is_threading_enabled(pResourceManager) == MA_FALSE) {
                while (ma_resource_manager_data_buffer_node_result(pDataBufferNode) == MA_BUSY) {
                    result = ma_resource_manager_process_next_job(pResourceManager);
                    if (result == MA_NO_DATA_AVAILABLE || result == MA_CANCELLED) {
                        result = MA_SUCCESS;
                        break;
                    }
                }
            } else {
                /* Threading is enabled. The job queue will deal with the rest of the cleanup from here. */
            }
        } else {
            /* The sound isn't loading so we can just free the node here. */
            ma_resource_manager_data_buffer_node_free(pResourceManager, pDataBufferNode);
        }
    }

    return result;
}



static ma_uint32 ma_resource_manager_data_buffer_next_execution_order(ma_resource_manager_data_buffer* pDataBuffer)
{
    MA_ASSERT(pDataBuffer != NULL);
    return ma_atomic_fetch_add_32(&pDataBuffer->executionCounter, 1);
}

static ma_result ma_resource_manager_data_buffer_cb__read_pcm_frames(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_resource_manager_data_buffer_read_pcm_frames((ma_resource_manager_data_buffer*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_resource_manager_data_buffer_cb__seek_to_pcm_frame(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_resource_manager_data_buffer_seek_to_pcm_frame((ma_resource_manager_data_buffer*)pDataSource, frameIndex);
}

static ma_result ma_resource_manager_data_buffer_cb__get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_resource_manager_data_buffer_get_data_format((ma_resource_manager_data_buffer*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_resource_manager_data_buffer_cb__get_cursor_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_resource_manager_data_buffer_get_cursor_in_pcm_frames((ma_resource_manager_data_buffer*)pDataSource, pCursor);
}

static ma_result ma_resource_manager_data_buffer_cb__get_length_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_resource_manager_data_buffer_get_length_in_pcm_frames((ma_resource_manager_data_buffer*)pDataSource, pLength);
}

static ma_result ma_resource_manager_data_buffer_cb__set_looping(ma_data_source* pDataSource, ma_bool32 isLooping)
{
    ma_resource_manager_data_buffer* pDataBuffer = (ma_resource_manager_data_buffer*)pDataSource;
    MA_ASSERT(pDataBuffer != NULL);

    ma_atomic_exchange_32(&pDataBuffer->isLooping, isLooping);

    /* The looping state needs to be set on the connector as well or else looping won't work when we read audio data. */
    ma_data_source_set_looping(ma_resource_manager_data_buffer_get_connector(pDataBuffer), isLooping);

    return MA_SUCCESS;
}

static ma_data_source_vtable g_ma_resource_manager_data_buffer_vtable =
{
    ma_resource_manager_data_buffer_cb__read_pcm_frames,
    ma_resource_manager_data_buffer_cb__seek_to_pcm_frame,
    ma_resource_manager_data_buffer_cb__get_data_format,
    ma_resource_manager_data_buffer_cb__get_cursor_in_pcm_frames,
    ma_resource_manager_data_buffer_cb__get_length_in_pcm_frames,
    ma_resource_manager_data_buffer_cb__set_looping,
    0
};

static ma_result ma_resource_manager_data_buffer_init_ex_internal(ma_resource_manager* pResourceManager, const ma_resource_manager_data_source_config* pConfig, ma_uint32 hashedName32, ma_resource_manager_data_buffer* pDataBuffer)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager_data_buffer_node* pDataBufferNode;
    ma_data_source_config dataSourceConfig;
    ma_bool32 async;
    ma_uint32 flags;
    ma_resource_manager_pipeline_notifications notifications;

    if (pDataBuffer == NULL) {
        if (pConfig != NULL && pConfig->pNotifications != NULL) {
            ma_resource_manager_pipeline_notifications_signal_all_notifications(pConfig->pNotifications);
        }

        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDataBuffer);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->pNotifications != NULL) {
        notifications = *pConfig->pNotifications;   /* From here on out we should be referencing `notifications` instead of `pNotifications`. Set this to NULL to catch errors at testing time. */
    } else {
        MA_ZERO_OBJECT(&notifications);
    }

    /* For safety, always remove the ASYNC flag if threading is disabled on the resource manager. */
    flags = pConfig->flags;
    if (ma_resource_manager_is_threading_enabled(pResourceManager) == MA_FALSE) {
        flags &= ~MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC;
    }

    if (pConfig->isLooping) {
        flags |= MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING;
    }

    async = (flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC) != 0;

    /*
    Fences need to be acquired before doing anything. These must be acquired and released outside of
    the node to ensure there's no holes where ma_fence_wait() could prematurely return before the
    data buffer has completed initialization.

    When loading asynchronously, the node acquisition routine below will acquire the fences on this
    thread and then release them on the async thread when the operation is complete.

    These fences are always released at the "done" tag at the end of this function. They'll be
    acquired a second if loading asynchronously. This double acquisition system is just done to
    simplify code maintenance.
    */
    ma_resource_manager_pipeline_notifications_acquire_all_fences(&notifications);
    {
        /* We first need to acquire a node. If ASYNC is not set, this will not return until the entire sound has been loaded. */
        result = ma_resource_manager_data_buffer_node_acquire(pResourceManager, pConfig->pFilePath, pConfig->pFilePathW, hashedName32, flags, NULL, notifications.init.pFence, notifications.done.pFence, &pDataBufferNode);
        if (result != MA_SUCCESS) {
            ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
            goto done;
        }

        dataSourceConfig = ma_data_source_config_init();
        dataSourceConfig.vtable = &g_ma_resource_manager_data_buffer_vtable;

        result = ma_data_source_init(&dataSourceConfig, &pDataBuffer->ds);
        if (result != MA_SUCCESS) {
            ma_resource_manager_data_buffer_node_unacquire(pResourceManager, pDataBufferNode, NULL, NULL);
            ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
            goto done;
        }

        pDataBuffer->pResourceManager = pResourceManager;
        pDataBuffer->pNode  = pDataBufferNode;
        pDataBuffer->flags  = flags;
        pDataBuffer->result = MA_BUSY;  /* Always default to MA_BUSY for safety. It'll be overwritten when loading completes or an error occurs. */

        /* If we're loading asynchronously we need to post a job to the job queue to initialize the connector. */
        if (async == MA_FALSE || ma_resource_manager_data_buffer_node_result(pDataBufferNode) == MA_SUCCESS) {
            /* Loading synchronously or the data has already been fully loaded. We can just initialize the connector from here without a job. */
            result = ma_resource_manager_data_buffer_init_connector(pDataBuffer, pConfig, NULL, NULL);
            ma_atomic_exchange_i32(&pDataBuffer->result, result);

            ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
            goto done;
        } else {
            /* The node's data supply isn't initialized yet. The caller has requested that we load asynchronously so we need to post a job to do this. */
            ma_job job;
            ma_resource_manager_inline_notification initNotification;   /* Used when the WAIT_INIT flag is set. */

            if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                ma_resource_manager_inline_notification_init(pResourceManager, &initNotification);
            }

            /*
            The status of the data buffer needs to be set to MA_BUSY before posting the job so that the
            worker thread is aware of its busy state. If the LOAD_DATA_BUFFER job sees a status other
            than MA_BUSY, it'll assume an error and fall through to an early exit.
            */
            ma_atomic_exchange_i32(&pDataBuffer->result, MA_BUSY);

            /* Acquire fences a second time. These will be released by the async thread. */
            ma_resource_manager_pipeline_notifications_acquire_all_fences(&notifications);

            job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_BUFFER);
            job.order = ma_resource_manager_data_buffer_next_execution_order(pDataBuffer);
            job.data.resourceManager.loadDataBuffer.pDataBuffer             = pDataBuffer;
            job.data.resourceManager.loadDataBuffer.pInitNotification       = ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) ? &initNotification : notifications.init.pNotification;
            job.data.resourceManager.loadDataBuffer.pDoneNotification       = notifications.done.pNotification;
            job.data.resourceManager.loadDataBuffer.pInitFence              = notifications.init.pFence;
            job.data.resourceManager.loadDataBuffer.pDoneFence              = notifications.done.pFence;
            job.data.resourceManager.loadDataBuffer.rangeBegInPCMFrames     = pConfig->rangeBegInPCMFrames;
            job.data.resourceManager.loadDataBuffer.rangeEndInPCMFrames     = pConfig->rangeEndInPCMFrames;
            job.data.resourceManager.loadDataBuffer.loopPointBegInPCMFrames = pConfig->loopPointBegInPCMFrames;
            job.data.resourceManager.loadDataBuffer.loopPointEndInPCMFrames = pConfig->loopPointEndInPCMFrames;
            job.data.resourceManager.loadDataBuffer.isLooping               = (flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING) != 0;

            /* If we need to wait for initialization to complete we can just process the job in place. */
            if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                result = ma_job_process(&job);
            } else {
                result = ma_resource_manager_post_job(pResourceManager, &job);
            }

            if (result != MA_SUCCESS) {
                /* We failed to post the job. Most likely there isn't enough room in the queue's buffer. */
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_ERROR, "Failed to post MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_BUFFER job. %s.\n", ma_result_description(result));
                ma_atomic_exchange_i32(&pDataBuffer->result, result);

                /* Release the fences after the result has been set on the data buffer. */
                ma_resource_manager_pipeline_notifications_release_all_fences(&notifications);
            } else {
                if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                    ma_resource_manager_inline_notification_wait(&initNotification);

                    if (notifications.init.pNotification != NULL) {
                        ma_async_notification_signal(notifications.init.pNotification);
                    }

                    /* NOTE: Do not release the init fence here. It will have been done by the job. */

                    /* Make sure we return an error if initialization failed on the async thread. */
                    result = ma_resource_manager_data_buffer_result(pDataBuffer);
                    if (result == MA_BUSY) {
                        result  = MA_SUCCESS;
                    }
                }
            }

            if ((flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
                ma_resource_manager_inline_notification_uninit(&initNotification);
            }
        }

        if (result != MA_SUCCESS) {
            ma_resource_manager_data_buffer_node_unacquire(pResourceManager, pDataBufferNode, NULL, NULL);
            goto done;
        }
    }
done:
    if (result == MA_SUCCESS) {
        if (pConfig->initialSeekPointInPCMFrames > 0) {
            ma_resource_manager_data_buffer_seek_to_pcm_frame(pDataBuffer, pConfig->initialSeekPointInPCMFrames);
        }
    }

    ma_resource_manager_pipeline_notifications_release_all_fences(&notifications);

    return result;
}

MA_API ma_result ma_resource_manager_data_buffer_init_ex(ma_resource_manager* pResourceManager, const ma_resource_manager_data_source_config* pConfig, ma_resource_manager_data_buffer* pDataBuffer)
{
    return ma_resource_manager_data_buffer_init_ex_internal(pResourceManager, pConfig, 0, pDataBuffer);
}

MA_API ma_result ma_resource_manager_data_buffer_init(ma_resource_manager* pResourceManager, const char* pFilePath, ma_uint32 flags, const ma_resource_manager_pipeline_notifications* pNotifications, ma_resource_manager_data_buffer* pDataBuffer)
{
    ma_resource_manager_data_source_config config;

    config = ma_resource_manager_data_source_config_init();
    config.pFilePath      = pFilePath;
    config.flags          = flags;
    config.pNotifications = pNotifications;

    return ma_resource_manager_data_buffer_init_ex(pResourceManager, &config, pDataBuffer);
}

MA_API ma_result ma_resource_manager_data_buffer_init_w(ma_resource_manager* pResourceManager, const wchar_t* pFilePath, ma_uint32 flags, const ma_resource_manager_pipeline_notifications* pNotifications, ma_resource_manager_data_buffer* pDataBuffer)
{
    ma_resource_manager_data_source_config config;

    config = ma_resource_manager_data_source_config_init();
    config.pFilePathW     = pFilePath;
    config.flags          = flags;
    config.pNotifications = pNotifications;

    return ma_resource_manager_data_buffer_init_ex(pResourceManager, &config, pDataBuffer);
}

MA_API ma_result ma_resource_manager_data_buffer_init_copy(ma_resource_manager* pResourceManager, const ma_resource_manager_data_buffer* pExistingDataBuffer, ma_resource_manager_data_buffer* pDataBuffer)
{
    ma_resource_manager_data_source_config config;

    if (pExistingDataBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ASSERT(pExistingDataBuffer->pNode != NULL);  /* <-- If you've triggered this, you've passed in an invalid existing data buffer. */

    config = ma_resource_manager_data_source_config_init();
    config.flags = pExistingDataBuffer->flags;

    return ma_resource_manager_data_buffer_init_ex_internal(pResourceManager, &config, pExistingDataBuffer->pNode->hashedName32, pDataBuffer);
}

static ma_result ma_resource_manager_data_buffer_uninit_internal(ma_resource_manager_data_buffer* pDataBuffer)
{
    MA_ASSERT(pDataBuffer != NULL);

    /* The connector should be uninitialized first. */
    ma_resource_manager_data_buffer_uninit_connector(pDataBuffer->pResourceManager, pDataBuffer);

    /* With the connector uninitialized we can unacquire the node. */
    ma_resource_manager_data_buffer_node_unacquire(pDataBuffer->pResourceManager, pDataBuffer->pNode, NULL, NULL);

    /* The base data source needs to be uninitialized as well. */
    ma_data_source_uninit(&pDataBuffer->ds);

    return MA_SUCCESS;
}

MA_API ma_result ma_resource_manager_data_buffer_uninit(ma_resource_manager_data_buffer* pDataBuffer)
{
    ma_result result;

    if (pDataBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_buffer_result(pDataBuffer) == MA_SUCCESS) {
        /* The data buffer can be deleted synchronously. */
        return ma_resource_manager_data_buffer_uninit_internal(pDataBuffer);
    } else {
        /*
        The data buffer needs to be deleted asynchronously because it's still loading. With the status set to MA_UNAVAILABLE, no more pages will
        be loaded and the uninitialization should happen fairly quickly. Since the caller owns the data buffer, we need to wait for this event
        to get processed before returning.
        */
        ma_resource_manager_inline_notification notification;
        ma_job job;

        /*
        We need to mark the node as unavailable so we don't try reading from it anymore, but also to
        let the loading thread know that it needs to abort it's loading procedure.
        */
        ma_atomic_exchange_i32(&pDataBuffer->result, MA_UNAVAILABLE);

        result = ma_resource_manager_inline_notification_init(pDataBuffer->pResourceManager, &notification);
        if (result != MA_SUCCESS) {
            return result;  /* Failed to create the notification. This should rarely, if ever, happen. */
        }

        job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER);
        job.order = ma_resource_manager_data_buffer_next_execution_order(pDataBuffer);
        job.data.resourceManager.freeDataBuffer.pDataBuffer       = pDataBuffer;
        job.data.resourceManager.freeDataBuffer.pDoneNotification = &notification;
        job.data.resourceManager.freeDataBuffer.pDoneFence        = NULL;

        result = ma_resource_manager_post_job(pDataBuffer->pResourceManager, &job);
        if (result != MA_SUCCESS) {
            ma_resource_manager_inline_notification_uninit(&notification);
            return result;
        }

        ma_resource_manager_inline_notification_wait_and_uninit(&notification);
    }

    return result;
}

MA_API ma_result ma_resource_manager_data_buffer_read_pcm_frames(ma_resource_manager_data_buffer* pDataBuffer, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 framesRead = 0;
    ma_bool32 isDecodedBufferBusy = MA_FALSE;

    /* Safety. */
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    /*
    We cannot be using the data buffer after it's been uninitialized. If you trigger this assert it means you're trying to read from the data buffer after
    it's been uninitialized or is in the process of uninitializing.
    */
    MA_ASSERT(ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) != MA_UNAVAILABLE);

    /* If the node is not initialized we need to abort with a busy code. */
    if (ma_resource_manager_data_buffer_has_connector(pDataBuffer) == MA_FALSE) {
        return MA_BUSY; /* Still loading. */
    }

    /*
    If we've got a seek scheduled we'll want to do that before reading. However, for paged buffers, there's
    a chance that the sound hasn't yet been decoded up to the seek point will result in the seek failing. If
    this happens, we need to keep the seek scheduled and return MA_BUSY.
    */
    if (pDataBuffer->seekToCursorOnNextRead) {
        pDataBuffer->seekToCursorOnNextRead = MA_FALSE;

        result = ma_data_source_seek_to_pcm_frame(ma_resource_manager_data_buffer_get_connector(pDataBuffer), pDataBuffer->seekTargetInPCMFrames);
        if (result != MA_SUCCESS) {
            if (result == MA_BAD_SEEK && ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode) == ma_resource_manager_data_supply_type_decoded_paged) {
                pDataBuffer->seekToCursorOnNextRead = MA_TRUE;  /* Keep the seek scheduled. We just haven't loaded enough data yet to do the seek properly. */
                return MA_BUSY;
            }

            return result;
        }
    }

    /*
    For decoded buffers (not paged) we need to check beforehand how many frames we have available. We cannot
    exceed this amount. We'll read as much as we can, and then return MA_BUSY.
    */
    if (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode) == ma_resource_manager_data_supply_type_decoded) {
        ma_uint64 availableFrames;

        isDecodedBufferBusy = (ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) == MA_BUSY);

        if (ma_resource_manager_data_buffer_get_available_frames(pDataBuffer, &availableFrames) == MA_SUCCESS) {
            /* Don't try reading more than the available frame count if the data buffer node is still loading. */
            if (isDecodedBufferBusy) {
                if (frameCount > availableFrames) {
                    frameCount = availableFrames;

                    /*
                    If there's no frames available we want to set the status to MA_AT_END. The logic below
                    will check if the node is busy, and if so, change it to MA_BUSY. The reason we do this
                    is because we don't want to call `ma_data_source_read_pcm_frames()` if the frame count
                    is 0 because that'll result in a situation where it's possible MA_AT_END won't get
                    returned.
                    */
                    if (frameCount == 0) {
                        result = MA_AT_END;
                    }
                } else {
                    isDecodedBufferBusy = MA_FALSE; /* We have enough frames available in the buffer to avoid a MA_BUSY status. */
                }
            } else {
                /*
                Getting here means the buffer has been fully loaded. We can just pass the frame count straight
                into ma_data_source_read_pcm_frames() below and let ma_data_source handle it.
                */
            }
        }
    }

    /* Don't attempt to read anything if we've got no frames available. */
    if (frameCount > 0) {
        result = ma_data_source_read_pcm_frames(ma_resource_manager_data_buffer_get_connector(pDataBuffer), pFramesOut, frameCount, &framesRead);
    }

    /*
    If we returned MA_AT_END, but the node is still loading, we don't want to return that code or else the caller will interpret the sound
    as at the end and terminate decoding.
    */
    if (result == MA_AT_END) {
        if (ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) == MA_BUSY) {
            result = MA_BUSY;
        }
    }

    if (isDecodedBufferBusy) {
        result = MA_BUSY;
    }

    if (pFramesRead != NULL) {
        *pFramesRead = framesRead;
    }

    if (result == MA_SUCCESS && framesRead == 0) {
        result  = MA_AT_END;
    }

    return result;
}

MA_API ma_result ma_resource_manager_data_buffer_seek_to_pcm_frame(ma_resource_manager_data_buffer* pDataBuffer, ma_uint64 frameIndex)
{
    ma_result result;

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) != MA_UNAVAILABLE);

    /* If we haven't yet got a connector we need to abort. */
    if (ma_resource_manager_data_buffer_has_connector(pDataBuffer) == MA_FALSE) {
        pDataBuffer->seekTargetInPCMFrames = frameIndex;
        pDataBuffer->seekToCursorOnNextRead = MA_TRUE;
        return MA_BUSY; /* Still loading. */
    }

    result = ma_data_source_seek_to_pcm_frame(ma_resource_manager_data_buffer_get_connector(pDataBuffer), frameIndex);
    if (result != MA_SUCCESS) {
        return result;
    }

    pDataBuffer->seekTargetInPCMFrames = ~(ma_uint64)0; /* <-- For identification purposes. */
    pDataBuffer->seekToCursorOnNextRead = MA_FALSE;

    return MA_SUCCESS;
}

MA_API ma_result ma_resource_manager_data_buffer_get_data_format(ma_resource_manager_data_buffer* pDataBuffer, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) != MA_UNAVAILABLE);

    switch (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode))
    {
        case ma_resource_manager_data_supply_type_encoded:
        {
            return ma_data_source_get_data_format(&pDataBuffer->connector.decoder, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
        };

        case ma_resource_manager_data_supply_type_decoded:
        {
            *pFormat     = pDataBuffer->pNode->data.backend.decoded.format;
            *pChannels   = pDataBuffer->pNode->data.backend.decoded.channels;
            *pSampleRate = pDataBuffer->pNode->data.backend.decoded.sampleRate;
            ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pDataBuffer->pNode->data.backend.decoded.channels);
            return MA_SUCCESS;
        };

        case ma_resource_manager_data_supply_type_decoded_paged:
        {
            *pFormat     = pDataBuffer->pNode->data.backend.decodedPaged.data.format;
            *pChannels   = pDataBuffer->pNode->data.backend.decodedPaged.data.channels;
            *pSampleRate = pDataBuffer->pNode->data.backend.decodedPaged.sampleRate;
            ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, pDataBuffer->pNode->data.backend.decoded.channels);
            return MA_SUCCESS;
        };

        case ma_resource_manager_data_supply_type_unknown:
        {
            return MA_BUSY; /* Still loading. */
        };

        default:
        {
            /* Unknown supply type. Should never hit this. */
            return MA_INVALID_ARGS;
        }
    }
}

MA_API ma_result ma_resource_manager_data_buffer_get_cursor_in_pcm_frames(ma_resource_manager_data_buffer* pDataBuffer, ma_uint64* pCursor)
{
    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) != MA_UNAVAILABLE);

    if (pDataBuffer == NULL || pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    switch (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode))
    {
        case ma_resource_manager_data_supply_type_encoded:
        {
            return ma_decoder_get_cursor_in_pcm_frames(&pDataBuffer->connector.decoder, pCursor);
        };

        case ma_resource_manager_data_supply_type_decoded:
        {
            return ma_audio_buffer_get_cursor_in_pcm_frames(&pDataBuffer->connector.buffer, pCursor);
        };

        case ma_resource_manager_data_supply_type_decoded_paged:
        {
            return ma_paged_audio_buffer_get_cursor_in_pcm_frames(&pDataBuffer->connector.pagedBuffer, pCursor);
        };

        case ma_resource_manager_data_supply_type_unknown:
        {
            return MA_BUSY;
        };

        default:
        {
            return MA_INVALID_ARGS;
        }
    }
}

MA_API ma_result ma_resource_manager_data_buffer_get_length_in_pcm_frames(ma_resource_manager_data_buffer* pDataBuffer, ma_uint64* pLength)
{
    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) != MA_UNAVAILABLE);

    if (pDataBuffer == NULL || pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode) == ma_resource_manager_data_supply_type_unknown) {
        return MA_BUSY; /* Still loading. */
    }

    return ma_data_source_get_length_in_pcm_frames(ma_resource_manager_data_buffer_get_connector(pDataBuffer), pLength);
}

MA_API ma_result ma_resource_manager_data_buffer_result(const ma_resource_manager_data_buffer* pDataBuffer)
{
    if (pDataBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    return (ma_result)ma_atomic_load_i32((ma_result*)&pDataBuffer->result);    /* Need a naughty const-cast here. */
}

MA_API ma_result ma_resource_manager_data_buffer_set_looping(ma_resource_manager_data_buffer* pDataBuffer, ma_bool32 isLooping)
{
    return ma_data_source_set_looping(pDataBuffer, isLooping);
}

MA_API ma_bool32 ma_resource_manager_data_buffer_is_looping(const ma_resource_manager_data_buffer* pDataBuffer)
{
    return ma_data_source_is_looping(pDataBuffer);
}

MA_API ma_result ma_resource_manager_data_buffer_get_available_frames(ma_resource_manager_data_buffer* pDataBuffer, ma_uint64* pAvailableFrames)
{
    if (pAvailableFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    *pAvailableFrames = 0;

    if (pDataBuffer == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode) == ma_resource_manager_data_supply_type_unknown) {
        if (ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode) == MA_BUSY) {
            return MA_BUSY;
        } else {
            return MA_INVALID_OPERATION;    /* No connector. */
        }
    }

    switch (ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode))
    {
        case ma_resource_manager_data_supply_type_encoded:
        {
            return ma_decoder_get_available_frames(&pDataBuffer->connector.decoder, pAvailableFrames);
        };

        case ma_resource_manager_data_supply_type_decoded:
        {
            return ma_audio_buffer_get_available_frames(&pDataBuffer->connector.buffer, pAvailableFrames);
        };

        case ma_resource_manager_data_supply_type_decoded_paged:
        {
            ma_uint64 cursor;
            ma_paged_audio_buffer_get_cursor_in_pcm_frames(&pDataBuffer->connector.pagedBuffer, &cursor);

            if (pDataBuffer->pNode->data.backend.decodedPaged.decodedFrameCount > cursor) {
                *pAvailableFrames = pDataBuffer->pNode->data.backend.decodedPaged.decodedFrameCount - cursor;
            } else {
                *pAvailableFrames = 0;
            }

            return MA_SUCCESS;
        };

        case ma_resource_manager_data_supply_type_unknown:
        default:
        {
            /* Unknown supply type. Should never hit this. */
            return MA_INVALID_ARGS;
        }
    }
}

MA_API ma_result ma_resource_manager_register_file(ma_resource_manager* pResourceManager, const char* pFilePath, ma_uint32 flags)
{
    return ma_resource_manager_data_buffer_node_acquire(pResourceManager, pFilePath, NULL, 0, flags, NULL, NULL, NULL, NULL);
}

MA_API ma_result ma_resource_manager_register_file_w(ma_resource_manager* pResourceManager, const wchar_t* pFilePath, ma_uint32 flags)
{
    return ma_resource_manager_data_buffer_node_acquire(pResourceManager, NULL, pFilePath, 0, flags, NULL, NULL, NULL, NULL);
}


static ma_result ma_resource_manager_register_data(ma_resource_manager* pResourceManager, const char* pName, const wchar_t* pNameW, ma_resource_manager_data_supply* pExistingData)
{
    return ma_resource_manager_data_buffer_node_acquire(pResourceManager, pName, pNameW, 0, 0, pExistingData, NULL, NULL, NULL);
}

static ma_result ma_resource_manager_register_decoded_data_internal(ma_resource_manager* pResourceManager, const char* pName, const wchar_t* pNameW, const void* pData, ma_uint64 frameCount, ma_format format, ma_uint32 channels, ma_uint32 sampleRate)
{
    ma_resource_manager_data_supply data;
    data.type                            = ma_resource_manager_data_supply_type_decoded;
    data.backend.decoded.pData           = pData;
    data.backend.decoded.totalFrameCount = frameCount;
    data.backend.decoded.format          = format;
    data.backend.decoded.channels        = channels;
    data.backend.decoded.sampleRate      = sampleRate;

    return ma_resource_manager_register_data(pResourceManager, pName, pNameW, &data);
}

MA_API ma_result ma_resource_manager_register_decoded_data(ma_resource_manager* pResourceManager, const char* pName, const void* pData, ma_uint64 frameCount, ma_format format, ma_uint32 channels, ma_uint32 sampleRate)
{
    return ma_resource_manager_register_decoded_data_internal(pResourceManager, pName, NULL, pData, frameCount, format, channels, sampleRate);
}

MA_API ma_result ma_resource_manager_register_decoded_data_w(ma_resource_manager* pResourceManager, const wchar_t* pName, const void* pData, ma_uint64 frameCount, ma_format format, ma_uint32 channels, ma_uint32 sampleRate)
{
    return ma_resource_manager_register_decoded_data_internal(pResourceManager, NULL, pName, pData, frameCount, format, channels, sampleRate);
}


static ma_result ma_resource_manager_register_encoded_data_internal(ma_resource_manager* pResourceManager, const char* pName, const wchar_t* pNameW, const void* pData, size_t sizeInBytes)
{
    ma_resource_manager_data_supply data;
    data.type                        = ma_resource_manager_data_supply_type_encoded;
    data.backend.encoded.pData       = pData;
    data.backend.encoded.sizeInBytes = sizeInBytes;

    return ma_resource_manager_register_data(pResourceManager, pName, pNameW, &data);
}

MA_API ma_result ma_resource_manager_register_encoded_data(ma_resource_manager* pResourceManager, const char* pName, const void* pData, size_t sizeInBytes)
{
    return ma_resource_manager_register_encoded_data_internal(pResourceManager, pName, NULL, pData, sizeInBytes);
}

MA_API ma_result ma_resource_manager_register_encoded_data_w(ma_resource_manager* pResourceManager, const wchar_t* pName, const void* pData, size_t sizeInBytes)
{
    return ma_resource_manager_register_encoded_data_internal(pResourceManager, NULL, pName, pData, sizeInBytes);
}


MA_API ma_result ma_resource_manager_unregister_file(ma_resource_manager* pResourceManager, const char* pFilePath)
{
    return ma_resource_manager_unregister_data(pResourceManager, pFilePath);
}

MA_API ma_result ma_resource_manager_unregister_file_w(ma_resource_manager* pResourceManager, const wchar_t* pFilePath)
{
    return ma_resource_manager_unregister_data_w(pResourceManager, pFilePath);
}

MA_API ma_result ma_resource_manager_unregister_data(ma_resource_manager* pResourceManager, const char* pName)
{
    return ma_resource_manager_data_buffer_node_unacquire(pResourceManager, NULL, pName, NULL);
}

MA_API ma_result ma_resource_manager_unregister_data_w(ma_resource_manager* pResourceManager, const wchar_t* pName)
{
    return ma_resource_manager_data_buffer_node_unacquire(pResourceManager, NULL, NULL, pName);
}


static ma_uint32 ma_resource_manager_data_stream_next_execution_order(ma_resource_manager_data_stream* pDataStream)
{
    MA_ASSERT(pDataStream != NULL);
    return ma_atomic_fetch_add_32(&pDataStream->executionCounter, 1);
}

static ma_bool32 ma_resource_manager_data_stream_is_decoder_at_end(const ma_resource_manager_data_stream* pDataStream)
{
    MA_ASSERT(pDataStream != NULL);
    return ma_atomic_load_32((ma_bool32*)&pDataStream->isDecoderAtEnd);
}

static ma_uint32 ma_resource_manager_data_stream_seek_counter(const ma_resource_manager_data_stream* pDataStream)
{
    MA_ASSERT(pDataStream != NULL);
    return ma_atomic_load_32((ma_uint32*)&pDataStream->seekCounter);
}


static ma_result ma_resource_manager_data_stream_cb__read_pcm_frames(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    return ma_resource_manager_data_stream_read_pcm_frames((ma_resource_manager_data_stream*)pDataSource, pFramesOut, frameCount, pFramesRead);
}

static ma_result ma_resource_manager_data_stream_cb__seek_to_pcm_frame(ma_data_source* pDataSource, ma_uint64 frameIndex)
{
    return ma_resource_manager_data_stream_seek_to_pcm_frame((ma_resource_manager_data_stream*)pDataSource, frameIndex);
}

static ma_result ma_resource_manager_data_stream_cb__get_data_format(ma_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    return ma_resource_manager_data_stream_get_data_format((ma_resource_manager_data_stream*)pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

static ma_result ma_resource_manager_data_stream_cb__get_cursor_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pCursor)
{
    return ma_resource_manager_data_stream_get_cursor_in_pcm_frames((ma_resource_manager_data_stream*)pDataSource, pCursor);
}

static ma_result ma_resource_manager_data_stream_cb__get_length_in_pcm_frames(ma_data_source* pDataSource, ma_uint64* pLength)
{
    return ma_resource_manager_data_stream_get_length_in_pcm_frames((ma_resource_manager_data_stream*)pDataSource, pLength);
}

static ma_result ma_resource_manager_data_stream_cb__set_looping(ma_data_source* pDataSource, ma_bool32 isLooping)
{
    ma_resource_manager_data_stream* pDataStream = (ma_resource_manager_data_stream*)pDataSource;
    MA_ASSERT(pDataStream != NULL);

    ma_atomic_exchange_32(&pDataStream->isLooping, isLooping);

    return MA_SUCCESS;
}

static ma_data_source_vtable g_ma_resource_manager_data_stream_vtable =
{
    ma_resource_manager_data_stream_cb__read_pcm_frames,
    ma_resource_manager_data_stream_cb__seek_to_pcm_frame,
    ma_resource_manager_data_stream_cb__get_data_format,
    ma_resource_manager_data_stream_cb__get_cursor_in_pcm_frames,
    ma_resource_manager_data_stream_cb__get_length_in_pcm_frames,
    ma_resource_manager_data_stream_cb__set_looping,
    0 /*MA_DATA_SOURCE_SELF_MANAGED_RANGE_AND_LOOP_POINT*/
};

static void ma_resource_manager_data_stream_set_absolute_cursor(ma_resource_manager_data_stream* pDataStream, ma_uint64 absoluteCursor)
{
    /* Loop if possible. */
    if (absoluteCursor > pDataStream->totalLengthInPCMFrames && pDataStream->totalLengthInPCMFrames > 0) {
        absoluteCursor = absoluteCursor % pDataStream->totalLengthInPCMFrames;
    }

    ma_atomic_exchange_64(&pDataStream->absoluteCursor, absoluteCursor);
}

MA_API ma_result ma_resource_manager_data_stream_init_ex(ma_resource_manager* pResourceManager, const ma_resource_manager_data_source_config* pConfig, ma_resource_manager_data_stream* pDataStream)
{
    ma_result result;
    ma_data_source_config dataSourceConfig;
    char* pFilePathCopy = NULL;
    wchar_t* pFilePathWCopy = NULL;
    ma_job job;
    ma_bool32 waitBeforeReturning = MA_FALSE;
    ma_resource_manager_inline_notification waitNotification;
    ma_resource_manager_pipeline_notifications notifications;
    ma_uint32 flags;

    if (pDataStream == NULL) {
        if (pConfig != NULL && pConfig->pNotifications != NULL) {
            ma_resource_manager_pipeline_notifications_signal_all_notifications(pConfig->pNotifications);
        }

        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDataStream);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->pNotifications != NULL) {
        notifications = *pConfig->pNotifications;    /* From here on out, `notifications` should be used instead of `pNotifications`. Setting this to NULL to catch any errors at testing time. */
    } else {
        MA_ZERO_OBJECT(&notifications);
    }

    dataSourceConfig = ma_data_source_config_init();
    dataSourceConfig.vtable = &g_ma_resource_manager_data_stream_vtable;

    result = ma_data_source_init(&dataSourceConfig, &pDataStream->ds);
    if (result != MA_SUCCESS) {
        ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
        return result;
    }

    flags = pConfig->flags;
    if (pConfig->isLooping) {
        flags |= MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING;
    }

    pDataStream->pResourceManager = pResourceManager;
    pDataStream->flags            = pConfig->flags;
    pDataStream->result           = MA_BUSY;

    ma_data_source_set_range_in_pcm_frames(pDataStream, pConfig->rangeBegInPCMFrames, pConfig->rangeEndInPCMFrames);
    ma_data_source_set_loop_point_in_pcm_frames(pDataStream, pConfig->loopPointBegInPCMFrames, pConfig->loopPointEndInPCMFrames);
    ma_data_source_set_looping(pDataStream, (flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING) != 0);

    if (pResourceManager == NULL || (pConfig->pFilePath == NULL && pConfig->pFilePathW == NULL)) {
        ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
        return MA_INVALID_ARGS;
    }

    /* We want all access to the VFS and the internal decoder to happen on the job thread just to keep things easier to manage for the VFS.  */

    /* We need a copy of the file path. We should probably make this more efficient, but for now we'll do a transient memory allocation. */
    if (pConfig->pFilePath != NULL) {
        pFilePathCopy  = ma_copy_string(pConfig->pFilePath, &pResourceManager->config.allocationCallbacks);
    } else {
        pFilePathWCopy = ma_copy_string_w(pConfig->pFilePathW, &pResourceManager->config.allocationCallbacks);
    }

    if (pFilePathCopy == NULL && pFilePathWCopy == NULL) {
        ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
        return MA_OUT_OF_MEMORY;
    }

    /*
    We need to check for the presence of MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC. If it's not set, we need to wait before returning. Otherwise we
    can return immediately. Likewise, we'll also check for MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT and do the same.
    */
    if ((pConfig->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_ASYNC) == 0 || (pConfig->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT) != 0) {
        waitBeforeReturning = MA_TRUE;
        ma_resource_manager_inline_notification_init(pResourceManager, &waitNotification);
    }

    ma_resource_manager_pipeline_notifications_acquire_all_fences(&notifications);

    /* Set the absolute cursor to our initial seek position so retrieval of the cursor returns a good value. */
    ma_resource_manager_data_stream_set_absolute_cursor(pDataStream, pConfig->initialSeekPointInPCMFrames);

    /* We now have everything we need to post the job. This is the last thing we need to do from here. The rest will be done by the job thread. */
    job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_LOAD_DATA_STREAM);
    job.order = ma_resource_manager_data_stream_next_execution_order(pDataStream);
    job.data.resourceManager.loadDataStream.pDataStream       = pDataStream;
    job.data.resourceManager.loadDataStream.pFilePath         = pFilePathCopy;
    job.data.resourceManager.loadDataStream.pFilePathW        = pFilePathWCopy;
    job.data.resourceManager.loadDataStream.initialSeekPoint  = pConfig->initialSeekPointInPCMFrames;
    job.data.resourceManager.loadDataStream.pInitNotification = (waitBeforeReturning == MA_TRUE) ? &waitNotification : notifications.init.pNotification;
    job.data.resourceManager.loadDataStream.pInitFence        = notifications.init.pFence;
    result = ma_resource_manager_post_job(pResourceManager, &job);
    if (result != MA_SUCCESS) {
        ma_resource_manager_pipeline_notifications_signal_all_notifications(&notifications);
        ma_resource_manager_pipeline_notifications_release_all_fences(&notifications);

        if (waitBeforeReturning) {
            ma_resource_manager_inline_notification_uninit(&waitNotification);
        }

        ma_free(pFilePathCopy,  &pResourceManager->config.allocationCallbacks);
        ma_free(pFilePathWCopy, &pResourceManager->config.allocationCallbacks);
        return result;
    }

    /* Wait if needed. */
    if (waitBeforeReturning) {
        ma_resource_manager_inline_notification_wait_and_uninit(&waitNotification);

        if (notifications.init.pNotification != NULL) {
            ma_async_notification_signal(notifications.init.pNotification);
        }

        /*
        If there was an error during initialization make sure we return that result here. We don't want to do this
        if we're not waiting because it will most likely be in a busy state.
        */
        if (pDataStream->result != MA_SUCCESS) {
            return pDataStream->result;
        }

        /* NOTE: Do not release pInitFence here. That will be done by the job. */
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_resource_manager_data_stream_init(ma_resource_manager* pResourceManager, const char* pFilePath, ma_uint32 flags, const ma_resource_manager_pipeline_notifications* pNotifications, ma_resource_manager_data_stream* pDataStream)
{
    ma_resource_manager_data_source_config config;

    config = ma_resource_manager_data_source_config_init();
    config.pFilePath      = pFilePath;
    config.flags          = flags;
    config.pNotifications = pNotifications;

    return ma_resource_manager_data_stream_init_ex(pResourceManager, &config, pDataStream);
}

MA_API ma_result ma_resource_manager_data_stream_init_w(ma_resource_manager* pResourceManager, const wchar_t* pFilePath, ma_uint32 flags, const ma_resource_manager_pipeline_notifications* pNotifications, ma_resource_manager_data_stream* pDataStream)
{
    ma_resource_manager_data_source_config config;

    config = ma_resource_manager_data_source_config_init();
    config.pFilePathW     = pFilePath;
    config.flags          = flags;
    config.pNotifications = pNotifications;

    return ma_resource_manager_data_stream_init_ex(pResourceManager, &config, pDataStream);
}

MA_API ma_result ma_resource_manager_data_stream_uninit(ma_resource_manager_data_stream* pDataStream)
{
    ma_resource_manager_inline_notification freeEvent;
    ma_job job;

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The first thing to do is set the result to unavailable. This will prevent future page decoding. */
    ma_atomic_exchange_i32(&pDataStream->result, MA_UNAVAILABLE);

    /*
    We need to post a job to ensure we're not in the middle or decoding or anything. Because the object is owned by the caller, we'll need
    to wait for it to complete before returning which means we need an event.
    */
    ma_resource_manager_inline_notification_init(pDataStream->pResourceManager, &freeEvent);

    job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_STREAM);
    job.order = ma_resource_manager_data_stream_next_execution_order(pDataStream);
    job.data.resourceManager.freeDataStream.pDataStream       = pDataStream;
    job.data.resourceManager.freeDataStream.pDoneNotification = &freeEvent;
    job.data.resourceManager.freeDataStream.pDoneFence        = NULL;
    ma_resource_manager_post_job(pDataStream->pResourceManager, &job);

    /* We need to wait for the job to finish processing before we return. */
    ma_resource_manager_inline_notification_wait_and_uninit(&freeEvent);

    return MA_SUCCESS;
}


static ma_uint32 ma_resource_manager_data_stream_get_page_size_in_frames(ma_resource_manager_data_stream* pDataStream)
{
    MA_ASSERT(pDataStream != NULL);
    MA_ASSERT(pDataStream->isDecoderInitialized == MA_TRUE);

    return MA_RESOURCE_MANAGER_PAGE_SIZE_IN_MILLISECONDS * (pDataStream->decoder.outputSampleRate/1000);
}

static void* ma_resource_manager_data_stream_get_page_data_pointer(ma_resource_manager_data_stream* pDataStream, ma_uint32 pageIndex, ma_uint32 relativeCursor)
{
    MA_ASSERT(pDataStream != NULL);
    MA_ASSERT(pDataStream->isDecoderInitialized == MA_TRUE);
    MA_ASSERT(pageIndex == 0 || pageIndex == 1);

    return ma_offset_ptr(pDataStream->pPageData, ((ma_resource_manager_data_stream_get_page_size_in_frames(pDataStream) * pageIndex) + relativeCursor) * ma_get_bytes_per_frame(pDataStream->decoder.outputFormat, pDataStream->decoder.outputChannels));
}

static void ma_resource_manager_data_stream_fill_page(ma_resource_manager_data_stream* pDataStream, ma_uint32 pageIndex)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 pageSizeInFrames;
    ma_uint64 totalFramesReadForThisPage = 0;
    void* pPageData = ma_resource_manager_data_stream_get_page_data_pointer(pDataStream, pageIndex, 0);

    pageSizeInFrames = ma_resource_manager_data_stream_get_page_size_in_frames(pDataStream);

    /* The decoder needs to inherit the stream's looping and range state. */
    {
        ma_uint64 rangeBeg;
        ma_uint64 rangeEnd;
        ma_uint64 loopPointBeg;
        ma_uint64 loopPointEnd;

        ma_data_source_set_looping(&pDataStream->decoder, ma_resource_manager_data_stream_is_looping(pDataStream));

        ma_data_source_get_range_in_pcm_frames(pDataStream, &rangeBeg, &rangeEnd);
        ma_data_source_set_range_in_pcm_frames(&pDataStream->decoder, rangeBeg, rangeEnd);

        ma_data_source_get_loop_point_in_pcm_frames(pDataStream, &loopPointBeg, &loopPointEnd);
        ma_data_source_set_loop_point_in_pcm_frames(&pDataStream->decoder, loopPointBeg, loopPointEnd);
    }

    /* Just read straight from the decoder. It will deal with ranges and looping for us. */
    result = ma_data_source_read_pcm_frames(&pDataStream->decoder, pPageData, pageSizeInFrames, &totalFramesReadForThisPage);
    if (result == MA_AT_END || totalFramesReadForThisPage < pageSizeInFrames) {
        ma_atomic_exchange_32(&pDataStream->isDecoderAtEnd, MA_TRUE);
    }

    ma_atomic_exchange_32(&pDataStream->pageFrameCount[pageIndex], (ma_uint32)totalFramesReadForThisPage);
    ma_atomic_exchange_32(&pDataStream->isPageValid[pageIndex], MA_TRUE);
}

static void ma_resource_manager_data_stream_fill_pages(ma_resource_manager_data_stream* pDataStream)
{
    ma_uint32 iPage;

    MA_ASSERT(pDataStream != NULL);

    for (iPage = 0; iPage < 2; iPage += 1) {
        ma_resource_manager_data_stream_fill_page(pDataStream, iPage);
    }
}


static ma_result ma_resource_manager_data_stream_map(ma_resource_manager_data_stream* pDataStream, void** ppFramesOut, ma_uint64* pFrameCount)
{
    ma_uint64 framesAvailable;
    ma_uint64 frameCount = 0;

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_stream_result(pDataStream) != MA_UNAVAILABLE);

    if (pFrameCount != NULL) {
        frameCount = *pFrameCount;
        *pFrameCount = 0;
    }
    if (ppFramesOut != NULL) {
        *ppFramesOut = NULL;
    }

    if (pDataStream == NULL || ppFramesOut == NULL || pFrameCount == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_stream_result(pDataStream) != MA_SUCCESS) {
        return MA_INVALID_OPERATION;
    }

    /* Don't attempt to read while we're in the middle of seeking. Tell the caller that we're busy. */
    if (ma_resource_manager_data_stream_seek_counter(pDataStream) > 0) {
        return MA_BUSY;
    }

    /* If the page we're on is invalid it means we've caught up to the job thread. */
    if (ma_atomic_load_32(&pDataStream->isPageValid[pDataStream->currentPageIndex]) == MA_FALSE) {
        framesAvailable = 0;
    } else {
        /*
        The page we're on is valid so we must have some frames available. We need to make sure that we don't overflow into the next page, even if it's valid. The reason is
        that the unmap process will only post an update for one page at a time. Keeping mapping tied to page boundaries makes this simpler.
        */
        ma_uint32 currentPageFrameCount = ma_atomic_load_32(&pDataStream->pageFrameCount[pDataStream->currentPageIndex]);
        MA_ASSERT(currentPageFrameCount >= pDataStream->relativeCursor);

        framesAvailable = currentPageFrameCount - pDataStream->relativeCursor;
    }

    /* If there's no frames available and the result is set to MA_AT_END we need to return MA_AT_END. */
    if (framesAvailable == 0) {
        if (ma_resource_manager_data_stream_is_decoder_at_end(pDataStream)) {
            return MA_AT_END;
        } else {
            return MA_BUSY; /* There are no frames available, but we're not marked as EOF so we might have caught up to the job thread. Need to return MA_BUSY and wait for more data. */
        }
    }

    MA_ASSERT(framesAvailable > 0);

    if (frameCount > framesAvailable) {
        frameCount = framesAvailable;
    }

    *ppFramesOut = ma_resource_manager_data_stream_get_page_data_pointer(pDataStream, pDataStream->currentPageIndex, pDataStream->relativeCursor);
    *pFrameCount = frameCount;

    return MA_SUCCESS;
}

static ma_result ma_resource_manager_data_stream_unmap(ma_resource_manager_data_stream* pDataStream, ma_uint64 frameCount)
{
    ma_uint32 newRelativeCursor;
    ma_uint32 pageSizeInFrames;
    ma_job job;

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_stream_result(pDataStream) != MA_UNAVAILABLE);

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_stream_result(pDataStream) != MA_SUCCESS) {
        return MA_INVALID_OPERATION;
    }

    /* The frame count should always fit inside a 32-bit integer. */
    if (frameCount > 0xFFFFFFFF) {
        return MA_INVALID_ARGS;
    }

    pageSizeInFrames = ma_resource_manager_data_stream_get_page_size_in_frames(pDataStream);

    /* The absolute cursor needs to be updated for ma_resource_manager_data_stream_get_cursor_in_pcm_frames(). */
    ma_resource_manager_data_stream_set_absolute_cursor(pDataStream, ma_atomic_load_64(&pDataStream->absoluteCursor) + frameCount);

    /* Here is where we need to check if we need to load a new page, and if so, post a job to load it. */
    newRelativeCursor = pDataStream->relativeCursor + (ma_uint32)frameCount;

    /* If the new cursor has flowed over to the next page we need to mark the old one as invalid and post an event for it. */
    if (newRelativeCursor >= pageSizeInFrames) {
        newRelativeCursor -= pageSizeInFrames;

        /* Here is where we post the job start decoding. */
        job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_PAGE_DATA_STREAM);
        job.order = ma_resource_manager_data_stream_next_execution_order(pDataStream);
        job.data.resourceManager.pageDataStream.pDataStream = pDataStream;
        job.data.resourceManager.pageDataStream.pageIndex   = pDataStream->currentPageIndex;

        /* The page needs to be marked as invalid so that the public API doesn't try reading from it. */
        ma_atomic_exchange_32(&pDataStream->isPageValid[pDataStream->currentPageIndex], MA_FALSE);

        /* Before posting the job we need to make sure we set some state. */
        pDataStream->relativeCursor   = newRelativeCursor;
        pDataStream->currentPageIndex = (pDataStream->currentPageIndex + 1) & 0x01;
        return ma_resource_manager_post_job(pDataStream->pResourceManager, &job);
    } else {
        /* We haven't moved into a new page so we can just move the cursor forward. */
        pDataStream->relativeCursor = newRelativeCursor;
        return MA_SUCCESS;
    }
}


MA_API ma_result ma_resource_manager_data_stream_read_pcm_frames(ma_resource_manager_data_stream* pDataStream, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 totalFramesProcessed;
    ma_format format;
    ma_uint32 channels;

    /* Safety. */
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (frameCount == 0) {
        return MA_INVALID_ARGS;
    }

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_stream_result(pDataStream) != MA_UNAVAILABLE);

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_stream_result(pDataStream) != MA_SUCCESS) {
        return MA_INVALID_OPERATION;
    }

    /* Don't attempt to read while we're in the middle of seeking. Tell the caller that we're busy. */
    if (ma_resource_manager_data_stream_seek_counter(pDataStream) > 0) {
        return MA_BUSY;
    }

    ma_resource_manager_data_stream_get_data_format(pDataStream, &format, &channels, NULL, NULL, 0);

    /* Reading is implemented in terms of map/unmap. We need to run this in a loop because mapping is clamped against page boundaries. */
    totalFramesProcessed = 0;
    while (totalFramesProcessed < frameCount) {
        void* pMappedFrames;
        ma_uint64 mappedFrameCount;

        mappedFrameCount = frameCount - totalFramesProcessed;
        result = ma_resource_manager_data_stream_map(pDataStream, &pMappedFrames, &mappedFrameCount);
        if (result != MA_SUCCESS) {
            break;
        }

        /* Copy the mapped data to the output buffer if we have one. It's allowed for pFramesOut to be NULL in which case a relative forward seek is performed. */
        if (pFramesOut != NULL) {
            ma_copy_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, totalFramesProcessed, format, channels), pMappedFrames, mappedFrameCount, format, channels);
        }

        totalFramesProcessed += mappedFrameCount;

        result = ma_resource_manager_data_stream_unmap(pDataStream, mappedFrameCount);
        if (result != MA_SUCCESS) {
            break;  /* This is really bad - will only get an error here if we failed to post a job to the queue for loading the next page. */
        }
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesProcessed;
    }

    if (result == MA_SUCCESS && totalFramesProcessed == 0) {
        result  = MA_AT_END;
    }

    return result;
}

MA_API ma_result ma_resource_manager_data_stream_seek_to_pcm_frame(ma_resource_manager_data_stream* pDataStream, ma_uint64 frameIndex)
{
    ma_job job;
    ma_result streamResult;

    streamResult = ma_resource_manager_data_stream_result(pDataStream);

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(streamResult != MA_UNAVAILABLE);

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    if (streamResult != MA_SUCCESS && streamResult != MA_BUSY) {
        return MA_INVALID_OPERATION;
    }

    /* If we're not already seeking and we're sitting on the same frame, just make this a no-op. */
    if (ma_atomic_load_32(&pDataStream->seekCounter) == 0) {
        if (ma_atomic_load_64(&pDataStream->absoluteCursor) == frameIndex) {
            return MA_SUCCESS;
        }
    }


    /* Increment the seek counter first to indicate to read_paged_pcm_frames() and map_paged_pcm_frames() that we are in the middle of a seek and MA_BUSY should be returned. */
    ma_atomic_fetch_add_32(&pDataStream->seekCounter, 1);

    /* Update the absolute cursor so that ma_resource_manager_data_stream_get_cursor_in_pcm_frames() returns the new position. */
    ma_resource_manager_data_stream_set_absolute_cursor(pDataStream, frameIndex);

    /*
    We need to clear our currently loaded pages so that the stream starts playback from the new seek point as soon as possible. These are for the purpose of the public
    API and will be ignored by the seek job. The seek job will operate on the assumption that both pages have been marked as invalid and the cursor is at the start of
    the first page.
    */
    pDataStream->relativeCursor   = 0;
    pDataStream->currentPageIndex = 0;
    ma_atomic_exchange_32(&pDataStream->isPageValid[0], MA_FALSE);
    ma_atomic_exchange_32(&pDataStream->isPageValid[1], MA_FALSE);

    /* Make sure the data stream is not marked as at the end or else if we seek in response to hitting the end, we won't be able to read any more data. */
    ma_atomic_exchange_32(&pDataStream->isDecoderAtEnd, MA_FALSE);

    /*
    The public API is not allowed to touch the internal decoder so we need to use a job to perform the seek. When seeking, the job thread will assume both pages
    are invalid and any content contained within them will be discarded and replaced with newly decoded data.
    */
    job = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_SEEK_DATA_STREAM);
    job.order = ma_resource_manager_data_stream_next_execution_order(pDataStream);
    job.data.resourceManager.seekDataStream.pDataStream = pDataStream;
    job.data.resourceManager.seekDataStream.frameIndex  = frameIndex;
    return ma_resource_manager_post_job(pDataStream->pResourceManager, &job);
}

MA_API ma_result ma_resource_manager_data_stream_get_data_format(ma_resource_manager_data_stream* pDataStream, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_stream_result(pDataStream) != MA_UNAVAILABLE);

    if (pFormat != NULL) {
        *pFormat = ma_format_unknown;
    }

    if (pChannels != NULL) {
        *pChannels = 0;
    }

    if (pSampleRate != NULL) {
        *pSampleRate = 0;
    }

    if (pChannelMap != NULL) {
        MA_ZERO_MEMORY(pChannelMap, sizeof(*pChannelMap) * channelMapCap);
    }

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    if (ma_resource_manager_data_stream_result(pDataStream) != MA_SUCCESS) {
        return MA_INVALID_OPERATION;
    }

    /*
    We're being a little bit naughty here and accessing the internal decoder from the public API. The output data format is constant, and we've defined this function
    such that the application is responsible for ensuring it's not called while uninitializing so it should be safe.
    */
    return ma_data_source_get_data_format(&pDataStream->decoder, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
}

MA_API ma_result ma_resource_manager_data_stream_get_cursor_in_pcm_frames(ma_resource_manager_data_stream* pDataStream, ma_uint64* pCursor)
{
    ma_result result;

    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }

    *pCursor = 0;

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(ma_resource_manager_data_stream_result(pDataStream) != MA_UNAVAILABLE);

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    If the stream is in an erroneous state we need to return an invalid operation. We can allow
    this to be called when the data stream is in a busy state because the caller may have asked
    for an initial seek position and it's convenient to return that as the cursor position.
    */
    result = ma_resource_manager_data_stream_result(pDataStream);
    if (result != MA_SUCCESS && result != MA_BUSY) {
        return MA_INVALID_OPERATION;
    }

    *pCursor = ma_atomic_load_64(&pDataStream->absoluteCursor);

    return MA_SUCCESS;
}

MA_API ma_result ma_resource_manager_data_stream_get_length_in_pcm_frames(ma_resource_manager_data_stream* pDataStream, ma_uint64* pLength)
{
    ma_result streamResult;

    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }

    *pLength = 0;

    streamResult = ma_resource_manager_data_stream_result(pDataStream);

    /* We cannot be using the data source after it's been uninitialized. */
    MA_ASSERT(streamResult != MA_UNAVAILABLE);

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    if (streamResult != MA_SUCCESS) {
        return streamResult;
    }

    /*
    We most definitely do not want to be calling ma_decoder_get_length_in_pcm_frames() directly. Instead we want to use a cached value that we
    calculated when we initialized it on the job thread.
    */
    *pLength = pDataStream->totalLengthInPCMFrames;
    if (*pLength == 0) {
        return MA_NOT_IMPLEMENTED;  /* Some decoders may not have a known length. */
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_resource_manager_data_stream_result(const ma_resource_manager_data_stream* pDataStream)
{
    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    return (ma_result)ma_atomic_load_i32(&pDataStream->result);
}

MA_API ma_result ma_resource_manager_data_stream_set_looping(ma_resource_manager_data_stream* pDataStream, ma_bool32 isLooping)
{
    return ma_data_source_set_looping(pDataStream, isLooping);
}

MA_API ma_bool32 ma_resource_manager_data_stream_is_looping(const ma_resource_manager_data_stream* pDataStream)
{
    if (pDataStream == NULL) {
        return MA_FALSE;
    }

    return ma_atomic_load_32((ma_bool32*)&pDataStream->isLooping);   /* Naughty const-cast. Value won't change from here in practice (maybe from another thread). */
}

MA_API ma_result ma_resource_manager_data_stream_get_available_frames(ma_resource_manager_data_stream* pDataStream, ma_uint64* pAvailableFrames)
{
    ma_uint32 pageIndex0;
    ma_uint32 pageIndex1;
    ma_uint32 relativeCursor;
    ma_uint64 availableFrames;

    if (pAvailableFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    *pAvailableFrames = 0;

    if (pDataStream == NULL) {
        return MA_INVALID_ARGS;
    }

    pageIndex0     =  pDataStream->currentPageIndex;
    pageIndex1     = (pDataStream->currentPageIndex + 1) & 0x01;
    relativeCursor =  pDataStream->relativeCursor;

    availableFrames = 0;
    if (ma_atomic_load_32(&pDataStream->isPageValid[pageIndex0])) {
        availableFrames += ma_atomic_load_32(&pDataStream->pageFrameCount[pageIndex0]) - relativeCursor;
        if (ma_atomic_load_32(&pDataStream->isPageValid[pageIndex1])) {
            availableFrames += ma_atomic_load_32(&pDataStream->pageFrameCount[pageIndex1]);
        }
    }

    *pAvailableFrames = availableFrames;
    return MA_SUCCESS;
}


static ma_result ma_resource_manager_data_source_preinit(ma_resource_manager* pResourceManager, const ma_resource_manager_data_source_config* pConfig, ma_resource_manager_data_source* pDataSource)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDataSource);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pResourceManager == NULL) {
        return MA_INVALID_ARGS;
    }

    pDataSource->flags = pConfig->flags;
    if (pConfig->isLooping) {
        pDataSource->flags |= MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_resource_manager_data_source_init_ex(ma_resource_manager* pResourceManager, const ma_resource_manager_data_source_config* pConfig, ma_resource_manager_data_source* pDataSource)
{
    ma_result result;

    result = ma_resource_manager_data_source_preinit(pResourceManager, pConfig, pDataSource);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* The data source itself is just a data stream or a data buffer. */
    if ((pConfig->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_init_ex(pResourceManager, pConfig, &pDataSource->backend.stream);
    } else {
        return ma_resource_manager_data_buffer_init_ex(pResourceManager, pConfig, &pDataSource->backend.buffer);
    }
}

MA_API ma_result ma_resource_manager_data_source_init(ma_resource_manager* pResourceManager, const char* pName, ma_uint32 flags, const ma_resource_manager_pipeline_notifications* pNotifications, ma_resource_manager_data_source* pDataSource)
{
    ma_resource_manager_data_source_config config;

    config = ma_resource_manager_data_source_config_init();
    config.pFilePath      = pName;
    config.flags          = flags;
    config.pNotifications = pNotifications;

    return ma_resource_manager_data_source_init_ex(pResourceManager, &config, pDataSource);
}

MA_API ma_result ma_resource_manager_data_source_init_w(ma_resource_manager* pResourceManager, const wchar_t* pName, ma_uint32 flags, const ma_resource_manager_pipeline_notifications* pNotifications, ma_resource_manager_data_source* pDataSource)
{
    ma_resource_manager_data_source_config config;

    config = ma_resource_manager_data_source_config_init();
    config.pFilePathW     = pName;
    config.flags          = flags;
    config.pNotifications = pNotifications;

    return ma_resource_manager_data_source_init_ex(pResourceManager, &config, pDataSource);
}

MA_API ma_result ma_resource_manager_data_source_init_copy(ma_resource_manager* pResourceManager, const ma_resource_manager_data_source* pExistingDataSource, ma_resource_manager_data_source* pDataSource)
{
    ma_result result;
    ma_resource_manager_data_source_config config;

    if (pExistingDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    config = ma_resource_manager_data_source_config_init();
    config.flags = pExistingDataSource->flags;

    result = ma_resource_manager_data_source_preinit(pResourceManager, &config, pDataSource);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* Copying can only be done from data buffers. Streams cannot be copied. */
    if ((pExistingDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return MA_INVALID_OPERATION;
    }

    return ma_resource_manager_data_buffer_init_copy(pResourceManager, &pExistingDataSource->backend.buffer, &pDataSource->backend.buffer);
}

MA_API ma_result ma_resource_manager_data_source_uninit(ma_resource_manager_data_source* pDataSource)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    /* All we need to is uninitialize the underlying data buffer or data stream. */
    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_uninit(&pDataSource->backend.stream);
    } else {
        return ma_resource_manager_data_buffer_uninit(&pDataSource->backend.buffer);
    }
}

MA_API ma_result ma_resource_manager_data_source_read_pcm_frames(ma_resource_manager_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    /* Safety. */
    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_read_pcm_frames(&pDataSource->backend.stream, pFramesOut, frameCount, pFramesRead);
    } else {
        return ma_resource_manager_data_buffer_read_pcm_frames(&pDataSource->backend.buffer, pFramesOut, frameCount, pFramesRead);
    }
}

MA_API ma_result ma_resource_manager_data_source_seek_to_pcm_frame(ma_resource_manager_data_source* pDataSource, ma_uint64 frameIndex)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_seek_to_pcm_frame(&pDataSource->backend.stream, frameIndex);
    } else {
        return ma_resource_manager_data_buffer_seek_to_pcm_frame(&pDataSource->backend.buffer, frameIndex);
    }
}

MA_API ma_result ma_resource_manager_data_source_map(ma_resource_manager_data_source* pDataSource, void** ppFramesOut, ma_uint64* pFrameCount)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_map(&pDataSource->backend.stream, ppFramesOut, pFrameCount);
    } else {
        return MA_NOT_IMPLEMENTED;  /* Mapping not supported with data buffers. */
    }
}

MA_API ma_result ma_resource_manager_data_source_unmap(ma_resource_manager_data_source* pDataSource, ma_uint64 frameCount)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_unmap(&pDataSource->backend.stream, frameCount);
    } else {
        return MA_NOT_IMPLEMENTED;  /* Mapping not supported with data buffers. */
    }
}

MA_API ma_result ma_resource_manager_data_source_get_data_format(ma_resource_manager_data_source* pDataSource, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_get_data_format(&pDataSource->backend.stream, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
    } else {
        return ma_resource_manager_data_buffer_get_data_format(&pDataSource->backend.buffer, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
    }
}

MA_API ma_result ma_resource_manager_data_source_get_cursor_in_pcm_frames(ma_resource_manager_data_source* pDataSource, ma_uint64* pCursor)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_get_cursor_in_pcm_frames(&pDataSource->backend.stream, pCursor);
    } else {
        return ma_resource_manager_data_buffer_get_cursor_in_pcm_frames(&pDataSource->backend.buffer, pCursor);
    }
}

MA_API ma_result ma_resource_manager_data_source_get_length_in_pcm_frames(ma_resource_manager_data_source* pDataSource, ma_uint64* pLength)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_get_length_in_pcm_frames(&pDataSource->backend.stream, pLength);
    } else {
        return ma_resource_manager_data_buffer_get_length_in_pcm_frames(&pDataSource->backend.buffer, pLength);
    }
}

MA_API ma_result ma_resource_manager_data_source_result(const ma_resource_manager_data_source* pDataSource)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_result(&pDataSource->backend.stream);
    } else {
        return ma_resource_manager_data_buffer_result(&pDataSource->backend.buffer);
    }
}

MA_API ma_result ma_resource_manager_data_source_set_looping(ma_resource_manager_data_source* pDataSource, ma_bool32 isLooping)
{
    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_set_looping(&pDataSource->backend.stream, isLooping);
    } else {
        return ma_resource_manager_data_buffer_set_looping(&pDataSource->backend.buffer, isLooping);
    }
}

MA_API ma_bool32 ma_resource_manager_data_source_is_looping(const ma_resource_manager_data_source* pDataSource)
{
    if (pDataSource == NULL) {
        return MA_FALSE;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_is_looping(&pDataSource->backend.stream);
    } else {
        return ma_resource_manager_data_buffer_is_looping(&pDataSource->backend.buffer);
    }
}

MA_API ma_result ma_resource_manager_data_source_get_available_frames(ma_resource_manager_data_source* pDataSource, ma_uint64* pAvailableFrames)
{
    if (pAvailableFrames == NULL) {
        return MA_INVALID_ARGS;
    }

    *pAvailableFrames = 0;

    if (pDataSource == NULL) {
        return MA_INVALID_ARGS;
    }

    if ((pDataSource->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_STREAM) != 0) {
        return ma_resource_manager_data_stream_get_available_frames(&pDataSource->backend.stream, pAvailableFrames);
    } else {
        return ma_resource_manager_data_buffer_get_available_frames(&pDataSource->backend.buffer, pAvailableFrames);
    }
}


MA_API ma_result ma_resource_manager_post_job(ma_resource_manager* pResourceManager, const ma_job* pJob)
{
    if (pResourceManager == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_job_queue_post(&pResourceManager->jobQueue, pJob);
}

MA_API ma_result ma_resource_manager_post_job_quit(ma_resource_manager* pResourceManager)
{
    ma_job job = ma_job_init(MA_JOB_TYPE_QUIT);
    return ma_resource_manager_post_job(pResourceManager, &job);
}

MA_API ma_result ma_resource_manager_next_job(ma_resource_manager* pResourceManager, ma_job* pJob)
{
    if (pResourceManager == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_job_queue_next(&pResourceManager->jobQueue, pJob);
}


static ma_result ma_job_process__resource_manager__load_data_buffer_node(ma_job* pJob)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_buffer_node* pDataBufferNode;

    MA_ASSERT(pJob != NULL);

    pResourceManager = (ma_resource_manager*)pJob->data.resourceManager.loadDataBufferNode.pResourceManager;
    MA_ASSERT(pResourceManager != NULL);

    pDataBufferNode = (ma_resource_manager_data_buffer_node*)pJob->data.resourceManager.loadDataBufferNode.pDataBufferNode;
    MA_ASSERT(pDataBufferNode != NULL);
    MA_ASSERT(pDataBufferNode->isDataOwnedByResourceManager == MA_TRUE);  /* The data should always be owned by the resource manager. */

    /* The data buffer is not getting deleted, but we may be getting executed out of order. If so, we need to push the job back onto the queue and return. */
    if (pJob->order != ma_atomic_load_32(&pDataBufferNode->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Attempting to execute out of order. Probably interleaved with a MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER job. */
    }

    /* First thing we need to do is check whether or not the data buffer is getting deleted. If so we just abort. */
    if (ma_resource_manager_data_buffer_node_result(pDataBufferNode) != MA_BUSY) {
        result = ma_resource_manager_data_buffer_node_result(pDataBufferNode);    /* The data buffer may be getting deleted before it's even been loaded. */
        goto done;
    }

    /*
    We're ready to start loading. Essentially what we're doing here is initializing the data supply
    of the node. Once this is complete, data buffers can have their connectors initialized which
    will allow then to have audio data read from them.

    Note that when the data supply type has been moved away from "unknown", that is when other threads
    will determine that the node is available for data delivery and the data buffer connectors can be
    initialized. Therefore, it's important that it is set after the data supply has been initialized.
    */
    if ((pJob->data.resourceManager.loadDataBufferNode.flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_DECODE) != 0) {
        /*
        Decoding. This is the complex case because we're not going to be doing the entire decoding
        process here. Instead it's going to be split of multiple jobs and loaded in pages. The
        reason for this is to evenly distribute decoding time across multiple sounds, rather than
        having one huge sound hog all the available processing resources.

        The first thing we do is initialize a decoder. This is allocated on the heap and is passed
        around to the paging jobs. When the last paging job has completed it's processing, it'll
        free the decoder for us.

        This job does not do any actual decoding. It instead just posts a PAGE_DATA_BUFFER_NODE job
        which is where the actual decoding work will be done. However, once this job is complete,
        the node will be in a state where data buffer connectors can be initialized.
        */
        ma_decoder* pDecoder;   /* <-- Free'd on the last page decode. */
        ma_job pageDataBufferNodeJob;

        /* Allocate the decoder by initializing a decoded data supply. */
        result = ma_resource_manager_data_buffer_node_init_supply_decoded(pResourceManager, pDataBufferNode, pJob->data.resourceManager.loadDataBufferNode.pFilePath, pJob->data.resourceManager.loadDataBufferNode.pFilePathW, pJob->data.resourceManager.loadDataBufferNode.flags, &pDecoder);

        /*
        Don't ever propagate an MA_BUSY result code or else the resource manager will think the
        node is just busy decoding rather than in an error state. This should never happen, but
        including this logic for safety just in case.
        */
        if (result == MA_BUSY) {
            result  = MA_ERROR;
        }

        if (result != MA_SUCCESS) {
            if (pJob->data.resourceManager.loadDataBufferNode.pFilePath != NULL) {
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Failed to initialize data supply for \"%s\". %s.\n", pJob->data.resourceManager.loadDataBufferNode.pFilePath, ma_result_description(result));
            } else {
                #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(_MSC_VER)
                    ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_WARNING, "Failed to initialize data supply for \"%ls\", %s.\n", pJob->data.resourceManager.loadDataBufferNode.pFilePathW, ma_result_description(result));
                #endif
            }

            goto done;
        }

        /*
        At this point the node's data supply is initialized and other threads can start initializing
        their data buffer connectors. However, no data will actually be available until we start to
        actually decode it. To do this, we need to post a paging job which is where the decoding
        work is done.

        Note that if an error occurred at an earlier point, this section will have been skipped.
        */
        pageDataBufferNodeJob = ma_job_init(MA_JOB_TYPE_RESOURCE_MANAGER_PAGE_DATA_BUFFER_NODE);
        pageDataBufferNodeJob.order = ma_resource_manager_data_buffer_node_next_execution_order(pDataBufferNode);
        pageDataBufferNodeJob.data.resourceManager.pageDataBufferNode.pResourceManager  = pResourceManager;
        pageDataBufferNodeJob.data.resourceManager.pageDataBufferNode.pDataBufferNode   = pDataBufferNode;
        pageDataBufferNodeJob.data.resourceManager.pageDataBufferNode.pDecoder          = pDecoder;
        pageDataBufferNodeJob.data.resourceManager.pageDataBufferNode.pDoneNotification = pJob->data.resourceManager.loadDataBufferNode.pDoneNotification;
        pageDataBufferNodeJob.data.resourceManager.pageDataBufferNode.pDoneFence        = pJob->data.resourceManager.loadDataBufferNode.pDoneFence;

        /* The job has been set up so it can now be posted. */
        result = ma_resource_manager_post_job(pResourceManager, &pageDataBufferNodeJob);

        /*
        When we get here, we want to make sure the result code is set to MA_BUSY. The reason for
        this is that the result will be copied over to the node's internal result variable. In
        this case, since the decoding is still in-progress, we need to make sure the result code
        is set to MA_BUSY.
        */
        if (result != MA_SUCCESS) {
            ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_ERROR, "Failed to post MA_JOB_TYPE_RESOURCE_MANAGER_PAGE_DATA_BUFFER_NODE job. %s\n", ma_result_description(result));
            ma_decoder_uninit(pDecoder);
            ma_free(pDecoder, &pResourceManager->config.allocationCallbacks);
        } else {
            result = MA_BUSY;
        }
    } else {
        /* No decoding. This is the simple case. We need only read the file content into memory and we're done. */
        result = ma_resource_manager_data_buffer_node_init_supply_encoded(pResourceManager, pDataBufferNode, pJob->data.resourceManager.loadDataBufferNode.pFilePath, pJob->data.resourceManager.loadDataBufferNode.pFilePathW);
    }


done:
    /* File paths are no longer needed. */
    ma_free(pJob->data.resourceManager.loadDataBufferNode.pFilePath,  &pResourceManager->config.allocationCallbacks);
    ma_free(pJob->data.resourceManager.loadDataBufferNode.pFilePathW, &pResourceManager->config.allocationCallbacks);

    /*
    We need to set the result to at the very end to ensure no other threads try reading the data before we've fully initialized the object. Other threads
    are going to be inspecting this variable to determine whether or not they're ready to read data. We can only change the result if it's set to MA_BUSY
    because otherwise we may be changing away from an error code which would be bad. An example is if the application creates a data buffer, but then
    immediately deletes it before we've got to this point. In this case, pDataBuffer->result will be MA_UNAVAILABLE, and setting it to MA_SUCCESS or any
    other error code would cause the buffer to look like it's in a state that it's not.
    */
    ma_atomic_compare_and_swap_i32(&pDataBufferNode->result, MA_BUSY, result);

    /* At this point initialization is complete and we can signal the notification if any. */
    if (pJob->data.resourceManager.loadDataBufferNode.pInitNotification != NULL) {
        ma_async_notification_signal(pJob->data.resourceManager.loadDataBufferNode.pInitNotification);
    }
    if (pJob->data.resourceManager.loadDataBufferNode.pInitFence != NULL) {
        ma_fence_release(pJob->data.resourceManager.loadDataBufferNode.pInitFence);
    }

    /* If we have a success result it means we've fully loaded the buffer. This will happen in the non-decoding case. */
    if (result != MA_BUSY) {
        if (pJob->data.resourceManager.loadDataBufferNode.pDoneNotification != NULL) {
            ma_async_notification_signal(pJob->data.resourceManager.loadDataBufferNode.pDoneNotification);
        }
        if (pJob->data.resourceManager.loadDataBufferNode.pDoneFence != NULL) {
            ma_fence_release(pJob->data.resourceManager.loadDataBufferNode.pDoneFence);
        }
    }

    /* Increment the node's execution pointer so that the next jobs can be processed. This is how we keep decoding of pages in-order. */
    ma_atomic_fetch_add_32(&pDataBufferNode->executionPointer, 1);

    /* A busy result should be considered successful from the point of view of the job system. */
    if (result == MA_BUSY) {
        result  = MA_SUCCESS;
    }

    return result;
}

static ma_result ma_job_process__resource_manager__free_data_buffer_node(ma_job* pJob)
{
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_buffer_node* pDataBufferNode;

    MA_ASSERT(pJob != NULL);

    pResourceManager = (ma_resource_manager*)pJob->data.resourceManager.freeDataBufferNode.pResourceManager;
    MA_ASSERT(pResourceManager != NULL);

    pDataBufferNode = (ma_resource_manager_data_buffer_node*)pJob->data.resourceManager.freeDataBufferNode.pDataBufferNode;
    MA_ASSERT(pDataBufferNode != NULL);

    if (pJob->order != ma_atomic_load_32(&pDataBufferNode->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    ma_resource_manager_data_buffer_node_free(pResourceManager, pDataBufferNode);

    /* The event needs to be signalled last. */
    if (pJob->data.resourceManager.freeDataBufferNode.pDoneNotification != NULL) {
        ma_async_notification_signal(pJob->data.resourceManager.freeDataBufferNode.pDoneNotification);
    }

    if (pJob->data.resourceManager.freeDataBufferNode.pDoneFence != NULL) {
        ma_fence_release(pJob->data.resourceManager.freeDataBufferNode.pDoneFence);
    }

    ma_atomic_fetch_add_32(&pDataBufferNode->executionPointer, 1);
    return MA_SUCCESS;
}

static ma_result ma_job_process__resource_manager__page_data_buffer_node(ma_job* pJob)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_buffer_node* pDataBufferNode;

    MA_ASSERT(pJob != NULL);

    pResourceManager = (ma_resource_manager*)pJob->data.resourceManager.pageDataBufferNode.pResourceManager;
    MA_ASSERT(pResourceManager != NULL);

    pDataBufferNode = (ma_resource_manager_data_buffer_node*)pJob->data.resourceManager.pageDataBufferNode.pDataBufferNode;
    MA_ASSERT(pDataBufferNode != NULL);

    if (pJob->order != ma_atomic_load_32(&pDataBufferNode->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    /* Don't do any more decoding if the data buffer has started the uninitialization process. */
    result = ma_resource_manager_data_buffer_node_result(pDataBufferNode);
    if (result != MA_BUSY) {
        goto done;
    }

    /* We're ready to decode the next page. */
    result = ma_resource_manager_data_buffer_node_decode_next_page(pResourceManager, pDataBufferNode, (ma_decoder*)pJob->data.resourceManager.pageDataBufferNode.pDecoder);

    /*
    If we have a success code by this point, we want to post another job. We're going to set the
    result back to MA_BUSY to make it clear that there's still more to load.
    */
    if (result == MA_SUCCESS) {
        ma_job newJob;
        newJob = *pJob; /* Everything is the same as the input job, except the execution order. */
        newJob.order = ma_resource_manager_data_buffer_node_next_execution_order(pDataBufferNode);   /* We need a fresh execution order. */

        result = ma_resource_manager_post_job(pResourceManager, &newJob);

        /* Since the sound isn't yet fully decoded we want the status to be set to busy. */
        if (result == MA_SUCCESS) {
            result  = MA_BUSY;
        }
    }

done:
    /* If there's still more to decode the result will be set to MA_BUSY. Otherwise we can free the decoder. */
    if (result != MA_BUSY) {
        ma_decoder_uninit((ma_decoder*)pJob->data.resourceManager.pageDataBufferNode.pDecoder);
        ma_free(pJob->data.resourceManager.pageDataBufferNode.pDecoder, &pResourceManager->config.allocationCallbacks);
    }

    /* If we reached the end we need to treat it as successful. */
    if (result == MA_AT_END) {
        result  = MA_SUCCESS;
    }

    /* Make sure we set the result of node in case some error occurred. */
    ma_atomic_compare_and_swap_i32(&pDataBufferNode->result, MA_BUSY, result);

    /* Signal the notification after setting the result in case the notification callback wants to inspect the result code. */
    if (result != MA_BUSY) {
        if (pJob->data.resourceManager.pageDataBufferNode.pDoneNotification != NULL) {
            ma_async_notification_signal(pJob->data.resourceManager.pageDataBufferNode.pDoneNotification);
        }

        if (pJob->data.resourceManager.pageDataBufferNode.pDoneFence != NULL) {
            ma_fence_release(pJob->data.resourceManager.pageDataBufferNode.pDoneFence);
        }
    }

    ma_atomic_fetch_add_32(&pDataBufferNode->executionPointer, 1);
    return result;
}


static ma_result ma_job_process__resource_manager__load_data_buffer(ma_job* pJob)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_buffer* pDataBuffer;
    ma_resource_manager_data_supply_type dataSupplyType = ma_resource_manager_data_supply_type_unknown;
    ma_bool32 isConnectorInitialized = MA_FALSE;

    /*
    All we're doing here is checking if the node has finished loading. If not, we just re-post the job
    and keep waiting. Otherwise we increment the execution counter and set the buffer's result code.
    */
    MA_ASSERT(pJob != NULL);

    pDataBuffer = (ma_resource_manager_data_buffer*)pJob->data.resourceManager.loadDataBuffer.pDataBuffer;
    MA_ASSERT(pDataBuffer != NULL);

    pResourceManager = pDataBuffer->pResourceManager;

    if (pJob->order != ma_atomic_load_32(&pDataBuffer->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Attempting to execute out of order. Probably interleaved with a MA_JOB_TYPE_RESOURCE_MANAGER_FREE_DATA_BUFFER job. */
    }

    /*
    First thing we need to do is check whether or not the data buffer is getting deleted. If so we
    just abort, but making sure we increment the execution pointer.
    */
    result = ma_resource_manager_data_buffer_result(pDataBuffer);
    if (result != MA_BUSY) {
        goto done;  /* <-- This will ensure the execution pointer is incremented. */
    } else {
        result = MA_SUCCESS;    /* <-- Make sure this is reset. */
        (void)result;           /* <-- This is to suppress a static analysis diagnostic about "result" not being used. But for safety when I do future maintenance I don't want to delete that assignment. */
    }

    /* Try initializing the connector if we haven't already. */
    isConnectorInitialized = ma_resource_manager_data_buffer_has_connector(pDataBuffer);
    if (isConnectorInitialized == MA_FALSE) {
        dataSupplyType = ma_resource_manager_data_buffer_node_get_data_supply_type(pDataBuffer->pNode);

        if (dataSupplyType != ma_resource_manager_data_supply_type_unknown) {
            /* We can now initialize the connector. If this fails, we need to abort. It's very rare for this to fail. */
            ma_resource_manager_data_source_config dataSourceConfig;    /* For setting initial looping state and range. */
            dataSourceConfig = ma_resource_manager_data_source_config_init();
            dataSourceConfig.rangeBegInPCMFrames     = pJob->data.resourceManager.loadDataBuffer.rangeBegInPCMFrames;
            dataSourceConfig.rangeEndInPCMFrames     = pJob->data.resourceManager.loadDataBuffer.rangeEndInPCMFrames;
            dataSourceConfig.loopPointBegInPCMFrames = pJob->data.resourceManager.loadDataBuffer.loopPointBegInPCMFrames;
            dataSourceConfig.loopPointEndInPCMFrames = pJob->data.resourceManager.loadDataBuffer.loopPointEndInPCMFrames;
            dataSourceConfig.isLooping               = pJob->data.resourceManager.loadDataBuffer.isLooping;

            result = ma_resource_manager_data_buffer_init_connector(pDataBuffer, &dataSourceConfig, pJob->data.resourceManager.loadDataBuffer.pInitNotification, pJob->data.resourceManager.loadDataBuffer.pInitFence);
            if (result != MA_SUCCESS) {
                ma_log_postf(ma_resource_manager_get_log(pResourceManager), MA_LOG_LEVEL_ERROR, "Failed to initialize connector for data buffer. %s.\n", ma_result_description(result));
                goto done;
            }
        } else {
            /* Don't have a known data supply type. Most likely the data buffer node is still loading, but it could be that an error occurred. */
        }
    } else {
        /* The connector is already initialized. Nothing to do here. */
    }

    /*
    If the data node is still loading, we need to repost the job and *not* increment the execution
    pointer (i.e. we need to not fall through to the "done" label).

    There is a hole between here and the where the data connector is initialized where the data
    buffer node may have finished initializing. We need to check for this by checking the result of
    the data buffer node and whether or not we had an unknown data supply type at the time of
    trying to initialize the data connector.
    */
    result = ma_resource_manager_data_buffer_node_result(pDataBuffer->pNode);
    if (result == MA_BUSY || (result == MA_SUCCESS && isConnectorInitialized == MA_FALSE && dataSupplyType == ma_resource_manager_data_supply_type_unknown)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);
    }

done:
    /* Only move away from a busy code so that we don't trash any existing error codes. */
    ma_atomic_compare_and_swap_i32(&pDataBuffer->result, MA_BUSY, result);

    /* Only signal the other threads after the result has been set just for cleanliness sake. */
    if (pJob->data.resourceManager.loadDataBuffer.pDoneNotification != NULL) {
        ma_async_notification_signal(pJob->data.resourceManager.loadDataBuffer.pDoneNotification);
    }
    if (pJob->data.resourceManager.loadDataBuffer.pDoneFence != NULL) {
        ma_fence_release(pJob->data.resourceManager.loadDataBuffer.pDoneFence);
    }

    /*
    If at this point the data buffer has not had it's connector initialized, it means the
    notification event was never signalled which means we need to signal it here.
    */
    if (ma_resource_manager_data_buffer_has_connector(pDataBuffer) == MA_FALSE && result != MA_SUCCESS) {
        if (pJob->data.resourceManager.loadDataBuffer.pInitNotification != NULL) {
            ma_async_notification_signal(pJob->data.resourceManager.loadDataBuffer.pInitNotification);
        }
        if (pJob->data.resourceManager.loadDataBuffer.pInitFence != NULL) {
            ma_fence_release(pJob->data.resourceManager.loadDataBuffer.pInitFence);
        }
    }

    ma_atomic_fetch_add_32(&pDataBuffer->executionPointer, 1);
    return result;
}

static ma_result ma_job_process__resource_manager__free_data_buffer(ma_job* pJob)
{
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_buffer* pDataBuffer;

    MA_ASSERT(pJob != NULL);

    pDataBuffer = (ma_resource_manager_data_buffer*)pJob->data.resourceManager.freeDataBuffer.pDataBuffer;
    MA_ASSERT(pDataBuffer != NULL);

    pResourceManager = pDataBuffer->pResourceManager;

    if (pJob->order != ma_atomic_load_32(&pDataBuffer->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    ma_resource_manager_data_buffer_uninit_internal(pDataBuffer);

    /* The event needs to be signalled last. */
    if (pJob->data.resourceManager.freeDataBuffer.pDoneNotification != NULL) {
        ma_async_notification_signal(pJob->data.resourceManager.freeDataBuffer.pDoneNotification);
    }

    if (pJob->data.resourceManager.freeDataBuffer.pDoneFence != NULL) {
        ma_fence_release(pJob->data.resourceManager.freeDataBuffer.pDoneFence);
    }

    ma_atomic_fetch_add_32(&pDataBuffer->executionPointer, 1);
    return MA_SUCCESS;
}

static ma_result ma_job_process__resource_manager__load_data_stream(ma_job* pJob)
{
    ma_result result = MA_SUCCESS;
    ma_decoder_config decoderConfig;
    ma_uint32 pageBufferSizeInBytes;
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_stream* pDataStream;

    MA_ASSERT(pJob != NULL);

    pDataStream = (ma_resource_manager_data_stream*)pJob->data.resourceManager.loadDataStream.pDataStream;
    MA_ASSERT(pDataStream != NULL);

    pResourceManager = pDataStream->pResourceManager;

    if (pJob->order != ma_atomic_load_32(&pDataStream->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    if (ma_resource_manager_data_stream_result(pDataStream) != MA_BUSY) {
        result = MA_INVALID_OPERATION;  /* Most likely the data stream is being uninitialized. */
        goto done;
    }

    /* We need to initialize the decoder first so we can determine the size of the pages. */
    decoderConfig = ma_resource_manager__init_decoder_config(pResourceManager);

    if (pJob->data.resourceManager.loadDataStream.pFilePath != NULL) {
        result = ma_decoder_init_vfs(pResourceManager->config.pVFS, pJob->data.resourceManager.loadDataStream.pFilePath, &decoderConfig, &pDataStream->decoder);
    } else {
        result = ma_decoder_init_vfs_w(pResourceManager->config.pVFS, pJob->data.resourceManager.loadDataStream.pFilePathW, &decoderConfig, &pDataStream->decoder);
    }
    if (result != MA_SUCCESS) {
        goto done;
    }

    /* Retrieve the total length of the file before marking the decoder as loaded. */
    if ((pDataStream->flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_UNKNOWN_LENGTH) == 0) {
        result = ma_decoder_get_length_in_pcm_frames(&pDataStream->decoder, &pDataStream->totalLengthInPCMFrames);
        if (result != MA_SUCCESS) {
            goto done;  /* Failed to retrieve the length. */
        }
    } else {
        pDataStream->totalLengthInPCMFrames = 0;
    }

    /*
    Only mark the decoder as initialized when the length of the decoder has been retrieved because that can possibly require a scan over the whole file
    and we don't want to have another thread trying to access the decoder while it's scanning.
    */
    pDataStream->isDecoderInitialized = MA_TRUE;

    /* We have the decoder so we can now initialize our page buffer. */
    pageBufferSizeInBytes = ma_resource_manager_data_stream_get_page_size_in_frames(pDataStream) * 2 * ma_get_bytes_per_frame(pDataStream->decoder.outputFormat, pDataStream->decoder.outputChannels);

    pDataStream->pPageData = ma_malloc(pageBufferSizeInBytes, &pResourceManager->config.allocationCallbacks);
    if (pDataStream->pPageData == NULL) {
        ma_decoder_uninit(&pDataStream->decoder);
        result = MA_OUT_OF_MEMORY;
        goto done;
    }

    /* Seek to our initial seek point before filling the initial pages. */
    ma_decoder_seek_to_pcm_frame(&pDataStream->decoder, pJob->data.resourceManager.loadDataStream.initialSeekPoint);

    /* We have our decoder and our page buffer, so now we need to fill our pages. */
    ma_resource_manager_data_stream_fill_pages(pDataStream);

    /* And now we're done. We want to make sure the result is MA_SUCCESS. */
    result = MA_SUCCESS;

done:
    ma_free(pJob->data.resourceManager.loadDataStream.pFilePath,  &pResourceManager->config.allocationCallbacks);
    ma_free(pJob->data.resourceManager.loadDataStream.pFilePathW, &pResourceManager->config.allocationCallbacks);

    /* We can only change the status away from MA_BUSY. If it's set to anything else it means an error has occurred somewhere or the uninitialization process has started (most likely). */
    ma_atomic_compare_and_swap_i32(&pDataStream->result, MA_BUSY, result);

    /* Only signal the other threads after the result has been set just for cleanliness sake. */
    if (pJob->data.resourceManager.loadDataStream.pInitNotification != NULL) {
        ma_async_notification_signal(pJob->data.resourceManager.loadDataStream.pInitNotification);
    }
    if (pJob->data.resourceManager.loadDataStream.pInitFence != NULL) {
        ma_fence_release(pJob->data.resourceManager.loadDataStream.pInitFence);
    }

    ma_atomic_fetch_add_32(&pDataStream->executionPointer, 1);
    return result;
}

static ma_result ma_job_process__resource_manager__free_data_stream(ma_job* pJob)
{
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_stream* pDataStream;

    MA_ASSERT(pJob != NULL);

    pDataStream = (ma_resource_manager_data_stream*)pJob->data.resourceManager.freeDataStream.pDataStream;
    MA_ASSERT(pDataStream != NULL);

    pResourceManager = pDataStream->pResourceManager;

    if (pJob->order != ma_atomic_load_32(&pDataStream->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    /* If our status is not MA_UNAVAILABLE we have a bug somewhere. */
    MA_ASSERT(ma_resource_manager_data_stream_result(pDataStream) == MA_UNAVAILABLE);

    if (pDataStream->isDecoderInitialized) {
        ma_decoder_uninit(&pDataStream->decoder);
    }

    if (pDataStream->pPageData != NULL) {
        ma_free(pDataStream->pPageData, &pResourceManager->config.allocationCallbacks);
        pDataStream->pPageData = NULL;  /* Just in case... */
    }

    ma_data_source_uninit(&pDataStream->ds);

    /* The event needs to be signalled last. */
    if (pJob->data.resourceManager.freeDataStream.pDoneNotification != NULL) {
        ma_async_notification_signal(pJob->data.resourceManager.freeDataStream.pDoneNotification);
    }
    if (pJob->data.resourceManager.freeDataStream.pDoneFence != NULL) {
        ma_fence_release(pJob->data.resourceManager.freeDataStream.pDoneFence);
    }

    /*ma_atomic_fetch_add_32(&pDataStream->executionPointer, 1);*/
    return MA_SUCCESS;
}

static ma_result ma_job_process__resource_manager__page_data_stream(ma_job* pJob)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_stream* pDataStream;

    MA_ASSERT(pJob != NULL);

    pDataStream = (ma_resource_manager_data_stream*)pJob->data.resourceManager.pageDataStream.pDataStream;
    MA_ASSERT(pDataStream != NULL);

    pResourceManager = pDataStream->pResourceManager;

    if (pJob->order != ma_atomic_load_32(&pDataStream->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    /* For streams, the status should be MA_SUCCESS. */
    if (ma_resource_manager_data_stream_result(pDataStream) != MA_SUCCESS) {
        result = MA_INVALID_OPERATION;
        goto done;
    }

    ma_resource_manager_data_stream_fill_page(pDataStream, pJob->data.resourceManager.pageDataStream.pageIndex);

done:
    ma_atomic_fetch_add_32(&pDataStream->executionPointer, 1);
    return result;
}

static ma_result ma_job_process__resource_manager__seek_data_stream(ma_job* pJob)
{
    ma_result result = MA_SUCCESS;
    ma_resource_manager* pResourceManager;
    ma_resource_manager_data_stream* pDataStream;

    MA_ASSERT(pJob != NULL);

    pDataStream = (ma_resource_manager_data_stream*)pJob->data.resourceManager.seekDataStream.pDataStream;
    MA_ASSERT(pDataStream != NULL);

    pResourceManager = pDataStream->pResourceManager;

    if (pJob->order != ma_atomic_load_32(&pDataStream->executionPointer)) {
        return ma_resource_manager_post_job(pResourceManager, pJob);    /* Out of order. */
    }

    /* For streams the status should be MA_SUCCESS for this to do anything. */
    if (ma_resource_manager_data_stream_result(pDataStream) != MA_SUCCESS || pDataStream->isDecoderInitialized == MA_FALSE) {
        result = MA_INVALID_OPERATION;
        goto done;
    }

    /*
    With seeking we just assume both pages are invalid and the relative frame cursor at position 0. This is basically exactly the same as loading, except
    instead of initializing the decoder, we seek to a frame.
    */
    ma_decoder_seek_to_pcm_frame(&pDataStream->decoder, pJob->data.resourceManager.seekDataStream.frameIndex);

    /* After seeking we'll need to reload the pages. */
    ma_resource_manager_data_stream_fill_pages(pDataStream);

    /* We need to let the public API know that we're done seeking. */
    ma_atomic_fetch_sub_32(&pDataStream->seekCounter, 1);

done:
    ma_atomic_fetch_add_32(&pDataStream->executionPointer, 1);
    return result;
}

MA_API ma_result ma_resource_manager_process_job(ma_resource_manager* pResourceManager, ma_job* pJob)
{
    if (pResourceManager == NULL || pJob == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_job_process(pJob);
}

MA_API ma_result ma_resource_manager_process_next_job(ma_resource_manager* pResourceManager)
{
    ma_result result;
    ma_job job;

    if (pResourceManager == NULL) {
        return MA_INVALID_ARGS;
    }

    /* This will return MA_CANCELLED if the next job is a quit job. */
    result = ma_resource_manager_next_job(pResourceManager, &job);
    if (result != MA_SUCCESS) {
        return result;
    }

    return ma_job_process(&job);
}
#else
/* We'll get here if the resource manager is being excluded from the build. We need to define the job processing callbacks as no-ops. */
static ma_result ma_job_process__resource_manager__load_data_buffer_node(ma_job* pJob) { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__free_data_buffer_node(ma_job* pJob) { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__page_data_buffer_node(ma_job* pJob) { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__load_data_buffer(ma_job* pJob)      { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__free_data_buffer(ma_job* pJob)      { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__load_data_stream(ma_job* pJob)      { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__free_data_stream(ma_job* pJob)      { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__page_data_stream(ma_job* pJob)      { return ma_job_process__noop(pJob); }
static ma_result ma_job_process__resource_manager__seek_data_stream(ma_job* pJob)      { return ma_job_process__noop(pJob); }
#endif  /* MA_NO_RESOURCE_MANAGER */


#ifndef MA_NO_NODE_GRAPH

static ma_stack* ma_stack_init(size_t sizeInBytes, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_stack* pStack;

    if (sizeInBytes == 0) {
        return NULL;
    }

    pStack = (ma_stack*)ma_malloc(sizeof(*pStack) - sizeof(pStack->_data) + sizeInBytes, pAllocationCallbacks);
    if (pStack == NULL) {
        return NULL;
    }

    pStack->offset = 0;
    pStack->sizeInBytes = sizeInBytes;

    return pStack;
}

static void ma_stack_uninit(ma_stack* pStack, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pStack == NULL) {
        return;
    }

    ma_free(pStack, pAllocationCallbacks);
}

static void* ma_stack_alloc(ma_stack* pStack, size_t sz)
{
    /* The size of the allocation is stored in the memory directly before the pointer. This needs to include padding to keep it aligned to ma_uintptr */
    void* p = (void*)((char*)pStack->_data + pStack->offset);
    size_t* pSize = (size_t*)p;

    sz = (sz + (sizeof(ma_uintptr) - 1)) & ~(sizeof(ma_uintptr) - 1);  /* Padding. */
    if (pStack->offset + sz + sizeof(size_t) > pStack->sizeInBytes) {
        return NULL;    /* Out of memory. */
    }

    pStack->offset += sz + sizeof(size_t);

    *pSize = sz;
    return (void*)((char*)p + sizeof(size_t));
}

static void ma_stack_free(ma_stack* pStack, void* p)
{
    size_t* pSize;

    if (p == NULL) {
        return;
    }

    pSize = (size_t*)p - 1;
    pStack->offset -= *pSize + sizeof(size_t);
}



/* 10ms @ 48K = 480. Must never exceed 65535. */
#ifndef MA_DEFAULT_NODE_CACHE_CAP_IN_FRAMES_PER_BUS
#define MA_DEFAULT_NODE_CACHE_CAP_IN_FRAMES_PER_BUS 480
#endif

#ifndef MA_DEFAULT_PREMIX_STACK_SIZE_PER_CHANNEL
#define MA_DEFAULT_PREMIX_STACK_SIZE_PER_CHANNEL    524288
#endif

static ma_result ma_node_read_pcm_frames(ma_node* pNode, ma_uint32 outputBusIndex, float* pFramesOut, ma_uint32 frameCount, ma_uint32* pFramesRead, ma_uint64 globalTime);

MA_API void ma_debug_fill_pcm_frames_with_sine_wave(float* pFramesOut, ma_uint32 frameCount, ma_format format, ma_uint32 channels, ma_uint32 sampleRate)
{
    #ifndef MA_NO_GENERATION
    {
        ma_waveform_config waveformConfig;
        ma_waveform waveform;

        waveformConfig = ma_waveform_config_init(format, channels, sampleRate, ma_waveform_type_sine, 1.0, 400);
        ma_waveform_init(&waveformConfig, &waveform);
        ma_waveform_read_pcm_frames(&waveform, pFramesOut, frameCount, NULL);
    }
    #else
    {
        (void)pFramesOut;
        (void)frameCount;
        (void)format;
        (void)channels;
        (void)sampleRate;
        #if defined(MA_DEBUG_OUTPUT)
        {
            #if _MSC_VER
                #pragma message ("ma_debug_fill_pcm_frames_with_sine_wave() will do nothing because MA_NO_GENERATION is enabled.")
            #endif
        }
        #endif
    }
    #endif
}



MA_API ma_node_graph_config ma_node_graph_config_init(ma_uint32 channels)
{
    ma_node_graph_config config;

    MA_ZERO_OBJECT(&config);
    config.channels               = channels;
    config.processingSizeInFrames = 0;

    return config;
}


static void ma_node_graph_set_is_reading(ma_node_graph* pNodeGraph, ma_bool32 isReading)
{
    MA_ASSERT(pNodeGraph != NULL);
    ma_atomic_exchange_32(&pNodeGraph->isReading, isReading);
}

#if 0
static ma_bool32 ma_node_graph_is_reading(ma_node_graph* pNodeGraph)
{
    MA_ASSERT(pNodeGraph != NULL);
    return ma_atomic_load_32(&pNodeGraph->isReading);
}
#endif


static void ma_node_graph_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_node_graph* pNodeGraph = (ma_node_graph*)pNode;
    ma_uint64 framesRead;

    ma_node_graph_read_pcm_frames(pNodeGraph, ppFramesOut[0], *pFrameCountOut, &framesRead);

    *pFrameCountOut = (ma_uint32)framesRead;    /* Safe cast. */

    (void)ppFramesIn;
    (void)pFrameCountIn;
}

static ma_node_vtable g_node_graph_node_vtable =
{
    ma_node_graph_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    0,      /* 0 input buses. */
    1,      /* 1 output bus. */
    0       /* Flags. */
};

static void ma_node_graph_endpoint_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    MA_ASSERT(pNode != NULL);
    MA_ASSERT(ma_node_get_input_bus_count(pNode)  == 1);
    MA_ASSERT(ma_node_get_output_bus_count(pNode) == 1);

    /* Input channel count needs to be the same as the output channel count. */
    MA_ASSERT(ma_node_get_input_channels(pNode, 0) == ma_node_get_output_channels(pNode, 0));

    /* We don't need to do anything here because it's a passthrough. */
    (void)pNode;
    (void)ppFramesIn;
    (void)pFrameCountIn;
    (void)ppFramesOut;
    (void)pFrameCountOut;

#if 0
    /* The data has already been mixed. We just need to move it to the output buffer. */
    if (ppFramesIn != NULL) {
        ma_copy_pcm_frames(ppFramesOut[0], ppFramesIn[0], *pFrameCountOut, ma_format_f32, ma_node_get_output_channels(pNode, 0));
    }
#endif
}

static ma_node_vtable g_node_graph_endpoint_vtable =
{
    ma_node_graph_endpoint_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* 1 input bus. */
    1,      /* 1 output bus. */
    MA_NODE_FLAG_PASSTHROUGH    /* Flags. The endpoint is a passthrough. */
};

MA_API ma_result ma_node_graph_init(const ma_node_graph_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_node_graph* pNodeGraph)
{
    ma_result result;
    ma_node_config baseConfig;
    ma_node_config endpointConfig;

    if (pNodeGraph == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNodeGraph);
    pNodeGraph->processingSizeInFrames = pConfig->processingSizeInFrames;

    /* Base node so we can use the node graph as a node into another graph. */
    baseConfig = ma_node_config_init();
    baseConfig.vtable = &g_node_graph_node_vtable;
    baseConfig.pOutputChannels = &pConfig->channels;

    result = ma_node_init(pNodeGraph, &baseConfig, pAllocationCallbacks, &pNodeGraph->base);
    if (result != MA_SUCCESS) {
        return result;
    }


    /* Endpoint. */
    endpointConfig = ma_node_config_init();
    endpointConfig.vtable          = &g_node_graph_endpoint_vtable;
    endpointConfig.pInputChannels  = &pConfig->channels;
    endpointConfig.pOutputChannels = &pConfig->channels;

    result = ma_node_init(pNodeGraph, &endpointConfig, pAllocationCallbacks, &pNodeGraph->endpoint);
    if (result != MA_SUCCESS) {
        ma_node_uninit(&pNodeGraph->base, pAllocationCallbacks);
        return result;
    }


    /* Processing cache. */
    if (pConfig->processingSizeInFrames > 0) {
        pNodeGraph->pProcessingCache = (float*)ma_malloc(pConfig->processingSizeInFrames * pConfig->channels * sizeof(float), pAllocationCallbacks);
        if (pNodeGraph->pProcessingCache == NULL) {
            ma_node_uninit(&pNodeGraph->endpoint, pAllocationCallbacks);
            ma_node_uninit(&pNodeGraph->base, pAllocationCallbacks);
            return MA_OUT_OF_MEMORY;
        }
    }


    /*
    We need a pre-mix stack. The size of this stack is configurable via the config. The default value depends on the channel count.
    */
    {
        size_t preMixStackSizeInBytes = pConfig->preMixStackSizeInBytes;
        if (preMixStackSizeInBytes == 0) {
            preMixStackSizeInBytes = pConfig->channels * MA_DEFAULT_PREMIX_STACK_SIZE_PER_CHANNEL;
        }

        pNodeGraph->pPreMixStack = ma_stack_init(preMixStackSizeInBytes, pAllocationCallbacks);
        if (pNodeGraph->pPreMixStack == NULL) {
            ma_node_uninit(&pNodeGraph->endpoint, pAllocationCallbacks);
            ma_node_uninit(&pNodeGraph->base, pAllocationCallbacks);
            if (pNodeGraph->pProcessingCache != NULL) {
                ma_free(pNodeGraph->pProcessingCache, pAllocationCallbacks);
            }

            return MA_OUT_OF_MEMORY;
        }
    }


    return MA_SUCCESS;
}

MA_API void ma_node_graph_uninit(ma_node_graph* pNodeGraph, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pNodeGraph == NULL) {
        return;
    }

    ma_node_uninit(&pNodeGraph->endpoint, pAllocationCallbacks);
    ma_node_uninit(&pNodeGraph->base, pAllocationCallbacks);

    if (pNodeGraph->pProcessingCache != NULL) {
        ma_free(pNodeGraph->pProcessingCache, pAllocationCallbacks);
        pNodeGraph->pProcessingCache = NULL;
    }

    if (pNodeGraph->pPreMixStack != NULL) {
        ma_stack_uninit(pNodeGraph->pPreMixStack, pAllocationCallbacks);
        pNodeGraph->pPreMixStack = NULL;
    }
}

MA_API ma_node* ma_node_graph_get_endpoint(ma_node_graph* pNodeGraph)
{
    if (pNodeGraph == NULL) {
        return NULL;
    }

    return &pNodeGraph->endpoint;
}

MA_API ma_result ma_node_graph_read_pcm_frames(ma_node_graph* pNodeGraph, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result = MA_SUCCESS;
    ma_uint64 totalFramesRead;
    ma_uint32 channels;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;   /* Safety. */
    }

    if (pNodeGraph == NULL) {
        return MA_INVALID_ARGS;
    }

    channels = ma_node_get_output_channels(&pNodeGraph->endpoint, 0);


    /* We'll be nice and try to do a full read of all frameCount frames. */
    totalFramesRead = 0;
    while (totalFramesRead < frameCount) {
        ma_uint32 framesJustRead;
        ma_uint64 framesToRead;
        float* pRunningFramesOut;

        framesToRead = frameCount - totalFramesRead;
        if (framesToRead > 0xFFFFFFFF) {
            framesToRead = 0xFFFFFFFF;
        }

        pRunningFramesOut = (float*)ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, ma_format_f32, channels);

        /* If there's anything in the cache, consume that first. */
        if (pNodeGraph->processingCacheFramesRemaining > 0) {
            ma_uint32 framesToReadFromCache;

            framesToReadFromCache = (ma_uint32)framesToRead;
            if (framesToReadFromCache > pNodeGraph->processingCacheFramesRemaining) {
                framesToReadFromCache = pNodeGraph->processingCacheFramesRemaining;
            }

            MA_COPY_MEMORY(pRunningFramesOut, pNodeGraph->pProcessingCache, framesToReadFromCache * channels * sizeof(float));
            MA_MOVE_MEMORY(pNodeGraph->pProcessingCache, pNodeGraph->pProcessingCache + (framesToReadFromCache * channels), (pNodeGraph->processingCacheFramesRemaining - framesToReadFromCache) * channels * sizeof(float));
            pNodeGraph->processingCacheFramesRemaining -= framesToReadFromCache;

            totalFramesRead += framesToReadFromCache;
            continue;
        } else {
            /*
            If processingSizeInFrames is non-zero, we need to make sure we always read in chunks of that size. If the frame count is less than
            that, we need to read into the cache and then continue on.
            */
            float* pReadDst = pRunningFramesOut;

            if (pNodeGraph->processingSizeInFrames > 0) {
                if (framesToRead < pNodeGraph->processingSizeInFrames) {
                    pReadDst = pNodeGraph->pProcessingCache;    /* We need to read into the cache because otherwise we'll overflow the output buffer. */
                }

                framesToRead = pNodeGraph->processingSizeInFrames;
            }

            ma_node_graph_set_is_reading(pNodeGraph, MA_TRUE);
            {
                result = ma_node_read_pcm_frames(&pNodeGraph->endpoint, 0, pReadDst, (ma_uint32)framesToRead, &framesJustRead, ma_node_get_time(&pNodeGraph->endpoint));
            }
            ma_node_graph_set_is_reading(pNodeGraph, MA_FALSE);

            /*
            Do not increment the total frames read counter if we read into the cache. We use this to determine how many frames have
            been written to the final output buffer.
            */
            if (pReadDst == pNodeGraph->pProcessingCache) {
                /* We read into the cache. */
                pNodeGraph->processingCacheFramesRemaining = framesJustRead;
            } else {
                /* We read straight into the output buffer. */
                totalFramesRead += framesJustRead;
            }

            if (result != MA_SUCCESS) {
                break;
            }

            /* Abort if we weren't able to read any frames or else we risk getting stuck in a loop. */
            if (framesJustRead == 0) {
                break;
            }
        }
    }

    /* Let's go ahead and silence any leftover frames just for some added safety to ensure the caller doesn't try emitting garbage out of the speakers. */
    if (totalFramesRead < frameCount) {
        ma_silence_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, totalFramesRead, ma_format_f32, channels), (frameCount - totalFramesRead), ma_format_f32, channels);
    }

    if (pFramesRead != NULL) {
        *pFramesRead = totalFramesRead;
    }

    return result;
}

MA_API ma_uint32 ma_node_graph_get_channels(const ma_node_graph* pNodeGraph)
{
    if (pNodeGraph == NULL) {
        return 0;
    }

    return ma_node_get_output_channels(&pNodeGraph->endpoint, 0);
}

MA_API ma_uint64 ma_node_graph_get_time(const ma_node_graph* pNodeGraph)
{
    if (pNodeGraph == NULL) {
        return 0;
    }

    return ma_node_get_time(&pNodeGraph->endpoint); /* Global time is just the local time of the endpoint. */
}

MA_API ma_result ma_node_graph_set_time(ma_node_graph* pNodeGraph, ma_uint64 globalTime)
{
    if (pNodeGraph == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_node_set_time(&pNodeGraph->endpoint, globalTime); /* Global time is just the local time of the endpoint. */
}


#define MA_NODE_OUTPUT_BUS_FLAG_HAS_READ    0x01    /* Whether or not this bus ready to read more data. Only used on nodes with multiple output buses. */

static ma_result ma_node_output_bus_init(ma_node* pNode, ma_uint32 outputBusIndex, ma_uint32 channels, ma_node_output_bus* pOutputBus)
{
    MA_ASSERT(pOutputBus != NULL);
    MA_ASSERT(outputBusIndex < MA_MAX_NODE_BUS_COUNT);
    MA_ASSERT(outputBusIndex < ma_node_get_output_bus_count(pNode));
    MA_ASSERT(channels < 256);

    MA_ZERO_OBJECT(pOutputBus);

    if (channels == 0) {
        return MA_INVALID_ARGS;
    }

    pOutputBus->pNode          = pNode;
    pOutputBus->outputBusIndex = (ma_uint8)outputBusIndex;
    pOutputBus->channels       = (ma_uint8)channels;
    pOutputBus->flags          = MA_NODE_OUTPUT_BUS_FLAG_HAS_READ; /* <-- Important that this flag is set by default. */
    pOutputBus->volume         = 1;

    return MA_SUCCESS;
}

static void ma_node_output_bus_lock(ma_node_output_bus* pOutputBus)
{
    ma_spinlock_lock(&pOutputBus->lock);
}

static void ma_node_output_bus_unlock(ma_node_output_bus* pOutputBus)
{
    ma_spinlock_unlock(&pOutputBus->lock);
}


static ma_uint32 ma_node_output_bus_get_channels(const ma_node_output_bus* pOutputBus)
{
    return pOutputBus->channels;
}


static void ma_node_output_bus_set_has_read(ma_node_output_bus* pOutputBus, ma_bool32 hasRead)
{
    if (hasRead) {
        ma_atomic_fetch_or_32(&pOutputBus->flags, MA_NODE_OUTPUT_BUS_FLAG_HAS_READ);
    } else {
        ma_atomic_fetch_and_32(&pOutputBus->flags, (ma_uint32)~MA_NODE_OUTPUT_BUS_FLAG_HAS_READ);
    }
}

static ma_bool32 ma_node_output_bus_has_read(ma_node_output_bus* pOutputBus)
{
    return (ma_atomic_load_32(&pOutputBus->flags) & MA_NODE_OUTPUT_BUS_FLAG_HAS_READ) != 0;
}


static void ma_node_output_bus_set_is_attached(ma_node_output_bus* pOutputBus, ma_bool32 isAttached)
{
    ma_atomic_exchange_32(&pOutputBus->isAttached, isAttached);
}

static ma_bool32 ma_node_output_bus_is_attached(ma_node_output_bus* pOutputBus)
{
    return ma_atomic_load_32(&pOutputBus->isAttached);
}


static ma_result ma_node_output_bus_set_volume(ma_node_output_bus* pOutputBus, float volume)
{
    MA_ASSERT(pOutputBus != NULL);

    if (volume < 0.0f) {
        volume = 0.0f;
    }

    ma_atomic_exchange_f32(&pOutputBus->volume, volume);

    return MA_SUCCESS;
}

static float ma_node_output_bus_get_volume(const ma_node_output_bus* pOutputBus)
{
    return ma_atomic_load_f32((float*)&pOutputBus->volume);
}


static ma_result ma_node_input_bus_init(ma_uint32 channels, ma_node_input_bus* pInputBus)
{
    MA_ASSERT(pInputBus != NULL);
    MA_ASSERT(channels < 256);

    MA_ZERO_OBJECT(pInputBus);

    if (channels == 0) {
        return MA_INVALID_ARGS;
    }

    pInputBus->channels = (ma_uint8)channels;

    return MA_SUCCESS;
}

static void ma_node_input_bus_lock(ma_node_input_bus* pInputBus)
{
    MA_ASSERT(pInputBus != NULL);

    ma_spinlock_lock(&pInputBus->lock);
}

static void ma_node_input_bus_unlock(ma_node_input_bus* pInputBus)
{
    MA_ASSERT(pInputBus != NULL);

    ma_spinlock_unlock(&pInputBus->lock);
}


static void ma_node_input_bus_next_begin(ma_node_input_bus* pInputBus)
{
    ma_atomic_fetch_add_32(&pInputBus->nextCounter, 1);
}

static void ma_node_input_bus_next_end(ma_node_input_bus* pInputBus)
{
    ma_atomic_fetch_sub_32(&pInputBus->nextCounter, 1);
}

static ma_uint32 ma_node_input_bus_get_next_counter(ma_node_input_bus* pInputBus)
{
    return ma_atomic_load_32(&pInputBus->nextCounter);
}


static ma_uint32 ma_node_input_bus_get_channels(const ma_node_input_bus* pInputBus)
{
    return pInputBus->channels;
}


static void ma_node_input_bus_detach__no_output_bus_lock(ma_node_input_bus* pInputBus, ma_node_output_bus* pOutputBus)
{
    MA_ASSERT(pInputBus  != NULL);
    MA_ASSERT(pOutputBus != NULL);

    /*
    Mark the output bus as detached first. This will prevent future iterations on the audio thread
    from iterating this output bus.
    */
    ma_node_output_bus_set_is_attached(pOutputBus, MA_FALSE);

    /*
    We cannot use the output bus lock here since it'll be getting used at a higher level, but we do
    still need to use the input bus lock since we'll be updating pointers on two different output
    buses. The same rules apply here as the attaching case. Although we're using a lock here, we're
    *not* using a lock when iterating over the list in the audio thread. We therefore need to craft
    this in a way such that the iteration on the audio thread doesn't break.

    The first thing to do is swap out the "next" pointer of the previous output bus with the
    new "next" output bus. This is the operation that matters for iteration on the audio thread.
    After that, the previous pointer on the new "next" pointer needs to be updated, after which
    point the linked list will be in a good state.
    */
    ma_node_input_bus_lock(pInputBus);
    {
        ma_node_output_bus* pOldPrev = (ma_node_output_bus*)ma_atomic_load_ptr(&pOutputBus->pPrev);
        ma_node_output_bus* pOldNext = (ma_node_output_bus*)ma_atomic_load_ptr(&pOutputBus->pNext);

        if (pOldPrev != NULL) {
            ma_atomic_exchange_ptr(&pOldPrev->pNext, pOldNext); /* <-- This is where the output bus is detached from the list. */
        }
        if (pOldNext != NULL) {
            ma_atomic_exchange_ptr(&pOldNext->pPrev, pOldPrev); /* <-- This is required for detachment. */
        }
    }
    ma_node_input_bus_unlock(pInputBus);

    /* At this point the output bus is detached and the linked list is completely unaware of it. Reset some data for safety. */
    ma_atomic_exchange_ptr(&pOutputBus->pNext, NULL);   /* Using atomic exchanges here, mainly for the benefit of analysis tools which don't always recognize spinlocks. */
    ma_atomic_exchange_ptr(&pOutputBus->pPrev, NULL);   /* As above. */
    pOutputBus->pInputNode             = NULL;
    pOutputBus->inputNodeInputBusIndex = 0;


    /*
    For thread-safety reasons, we don't want to be returning from this straight away. We need to
    wait for the audio thread to finish with the output bus. There's two things we need to wait
    for. The first is the part that selects the next output bus in the list, and the other is the
    part that reads from the output bus. Basically all we're doing is waiting for the input bus
    to stop referencing the output bus.

    We're doing this part last because we want the section above to run while the audio thread
    is finishing up with the output bus, just for efficiency reasons. We marked the output bus as
    detached right at the top of this function which is going to prevent the audio thread from
    iterating the output bus again.
    */

    /* Part 1: Wait for the current iteration to complete. */
    while (ma_node_input_bus_get_next_counter(pInputBus) > 0) {
        ma_yield();
    }

    /* Part 2: Wait for any reads to complete. */
    while (ma_atomic_load_32(&pOutputBus->refCount) > 0) {
        ma_yield();
    }

    /*
    At this point we're done detaching and we can be guaranteed that the audio thread is not going
    to attempt to reference this output bus again (until attached again).
    */
}

#if 0   /* Not used at the moment, but leaving here in case I need it later. */
static void ma_node_input_bus_detach(ma_node_input_bus* pInputBus, ma_node_output_bus* pOutputBus)
{
    MA_ASSERT(pInputBus  != NULL);
    MA_ASSERT(pOutputBus != NULL);

    ma_node_output_bus_lock(pOutputBus);
    {
        ma_node_input_bus_detach__no_output_bus_lock(pInputBus, pOutputBus);
    }
    ma_node_output_bus_unlock(pOutputBus);
}
#endif

static void ma_node_input_bus_attach(ma_node_input_bus* pInputBus, ma_node_output_bus* pOutputBus, ma_node* pNewInputNode, ma_uint32 inputNodeInputBusIndex)
{
    MA_ASSERT(pInputBus  != NULL);
    MA_ASSERT(pOutputBus != NULL);

    ma_node_output_bus_lock(pOutputBus);
    {
        ma_node_output_bus* pOldInputNode = (ma_node_output_bus*)ma_atomic_load_ptr(&pOutputBus->pInputNode);

        /* Detach from any existing attachment first if necessary. */
        if (pOldInputNode != NULL) {
            ma_node_input_bus_detach__no_output_bus_lock(pInputBus, pOutputBus);
        }

        /*
        At this point we can be sure the output bus is not attached to anything. The linked list in the
        old input bus has been updated so that pOutputBus will not get iterated again.
        */
        pOutputBus->pInputNode             = pNewInputNode;                     /* No need for an atomic assignment here because modification of this variable always happens within a lock. */
        pOutputBus->inputNodeInputBusIndex = (ma_uint8)inputNodeInputBusIndex;

        /*
        Now we need to attach the output bus to the linked list. This involves updating two pointers on
        two different output buses so I'm going to go ahead and keep this simple and just use a lock.
        There are ways to do this without a lock, but it's just too hard to maintain for its value.

        Although we're locking here, it's important to remember that we're *not* locking when iterating
        and reading audio data since that'll be running on the audio thread. As a result we need to be
        careful how we craft this so that we don't break iteration. What we're going to do is always
        attach the new item so that it becomes the first item in the list. That way, as we're iterating
        we won't break any links in the list and iteration will continue safely. The detaching case will
        also be crafted in a way as to not break list iteration. It's important to remember to use
        atomic exchanges here since no locking is happening on the audio thread during iteration.
        */
        ma_node_input_bus_lock(pInputBus);
        {
            ma_node_output_bus* pNewPrev = &pInputBus->head;
            ma_node_output_bus* pNewNext = (ma_node_output_bus*)ma_atomic_load_ptr(&pInputBus->head.pNext);

            /* Update the local output bus. */
            ma_atomic_exchange_ptr(&pOutputBus->pPrev, pNewPrev);
            ma_atomic_exchange_ptr(&pOutputBus->pNext, pNewNext);

            /* Update the other output buses to point back to the local output bus. */
            ma_atomic_exchange_ptr(&pInputBus->head.pNext, pOutputBus); /* <-- This is where the output bus is actually attached to the input bus. */

            /* Do the previous pointer last. This is only used for detachment. */
            if (pNewNext != NULL) {
                ma_atomic_exchange_ptr(&pNewNext->pPrev,  pOutputBus);
            }
        }
        ma_node_input_bus_unlock(pInputBus);

        /*
        Mark the node as attached last. This is used to controlling whether or the output bus will be
        iterated on the audio thread. Mainly required for detachment purposes.
        */
        ma_node_output_bus_set_is_attached(pOutputBus, MA_TRUE);
    }
    ma_node_output_bus_unlock(pOutputBus);
}

static ma_node_output_bus* ma_node_input_bus_next(ma_node_input_bus* pInputBus, ma_node_output_bus* pOutputBus)
{
    ma_node_output_bus* pNext;

    MA_ASSERT(pInputBus != NULL);

    if (pOutputBus == NULL) {
        return NULL;
    }

    ma_node_input_bus_next_begin(pInputBus);
    {
        pNext = pOutputBus;
        for (;;) {
            pNext = (ma_node_output_bus*)ma_atomic_load_ptr(&pNext->pNext);
            if (pNext == NULL) {
                break;      /* Reached the end. */
            }

            if (ma_node_output_bus_is_attached(pNext) == MA_FALSE) {
                continue;   /* The node is not attached. Keep checking. */
            }

            /* The next node has been selected. */
            break;
        }

        /* We need to increment the reference count of the selected node. */
        if (pNext != NULL) {
            ma_atomic_fetch_add_32(&pNext->refCount, 1);
        }

        /* The previous node is no longer being referenced. */
        ma_atomic_fetch_sub_32(&pOutputBus->refCount, 1);
    }
    ma_node_input_bus_next_end(pInputBus);

    return pNext;
}

static ma_node_output_bus* ma_node_input_bus_first(ma_node_input_bus* pInputBus)
{
    return ma_node_input_bus_next(pInputBus, &pInputBus->head);
}



static ma_result ma_node_input_bus_read_pcm_frames(ma_node* pInputNode, ma_node_input_bus* pInputBus, float* pFramesOut, ma_uint32 frameCount, ma_uint32* pFramesRead, ma_uint64 globalTime)
{
    ma_result result = MA_SUCCESS;
    ma_node_output_bus* pOutputBus;
    ma_node_output_bus* pFirst;
    ma_uint32 inputChannels;
    ma_bool32 doesOutputBufferHaveContent = MA_FALSE;

    /*
    This will be called from the audio thread which means we can't be doing any locking. Basically,
    this function will not perform any locking, whereas attaching and detaching will, but crafted in
    such a way that we don't need to perform any locking here. The important thing to remember is
    to always iterate in a forward direction.

    In order to process any data we need to first read from all input buses. That's where this
    function comes in. This iterates over each of the attachments and accumulates/mixes them. We
    also convert the channels to the nodes output channel count before mixing. We want to do this
    channel conversion so that the caller of this function can invoke the processing callback
    without having to do it themselves.

    When we iterate over each of the attachments on the input bus, we need to read as much data as
    we can from each of them so that we don't end up with holes between each of the attachments. To
    do this, we need to read from each attachment in a loop and read as many frames as we can, up
    to `frameCount`.
    */
    MA_ASSERT(pInputNode  != NULL);
    MA_ASSERT(pFramesRead != NULL); /* pFramesRead is critical and must always be specified. On input it's undefined and on output it'll be set to the number of frames actually read. */

    *pFramesRead = 0;   /* Safety. */

    inputChannels = ma_node_input_bus_get_channels(pInputBus);

    /*
    We need to be careful with how we call ma_node_input_bus_first() and ma_node_input_bus_next(). They
    are both critical to our lock-free thread-safety system. We can only call ma_node_input_bus_first()
    once per iteration, however we have an optimization to checks whether or not it's the first item in
    the list. We therefore need to store a pointer to the first item rather than repeatedly calling
    ma_node_input_bus_first(). It's safe to keep hold of this pointer, so long as we don't dereference it
    after calling ma_node_input_bus_next(), which we won't be.
    */
    pFirst = ma_node_input_bus_first(pInputBus);
    if (pFirst == NULL) {
        return MA_SUCCESS;  /* No attachments. Read nothing. */
    }

    for (pOutputBus = pFirst; pOutputBus != NULL; pOutputBus = ma_node_input_bus_next(pInputBus, pOutputBus)) {
        ma_uint32 framesProcessed = 0;
        ma_bool32 isSilentOutput = MA_FALSE;

        MA_ASSERT(pOutputBus->pNode != NULL);
        MA_ASSERT(((ma_node_base*)pOutputBus->pNode)->vtable != NULL);

        isSilentOutput = (((ma_node_base*)pOutputBus->pNode)->vtable->flags & MA_NODE_FLAG_SILENT_OUTPUT) != 0;

        if (pFramesOut != NULL) {
            /* Read. */
            while (framesProcessed < frameCount) {
                float* pRunningFramesOut;
                ma_uint32 framesToRead;
                ma_uint32 framesJustRead = 0;

                framesToRead = frameCount - framesProcessed;
                pRunningFramesOut = ma_offset_pcm_frames_ptr_f32(pFramesOut, framesProcessed, inputChannels);

                if (doesOutputBufferHaveContent == MA_FALSE) {
                    /* Fast path. First attachment. We just read straight into the output buffer (no mixing required). */
                    result = ma_node_read_pcm_frames(pOutputBus->pNode, pOutputBus->outputBusIndex, pRunningFramesOut, framesToRead, &framesJustRead, globalTime + framesProcessed);
                } else {
                    /* Slow path. Not the first attachment. Mixing required. */
                    ma_uint32 preMixBufferCapInFrames = ((ma_node_base*)pInputNode)->cachedDataCapInFramesPerBus;
                    float* pPreMixBuffer = (float*)ma_stack_alloc(((ma_node_base*)pInputNode)->pNodeGraph->pPreMixStack, preMixBufferCapInFrames * inputChannels * sizeof(float));

                    if (pPreMixBuffer == NULL) {
                        /*
                        If you're hitting this assert it means you've got an unusually deep chain of nodes, you've got an excessively large processing
                        size, or you have a combination of both, and as a result have run out of stack space. You can increase this using the
                        preMixStackSizeInBytes variable in ma_node_graph_config. If you're using ma_engine, you can do it via the preMixStackSizeInBytes
                        variable in ma_engine_config. It defaults to 512KB per output channel.
                        */
                        MA_ASSERT(MA_FALSE);
                    } else {
                        if (framesToRead > preMixBufferCapInFrames) {
                            framesToRead = preMixBufferCapInFrames;
                        }

                        result = ma_node_read_pcm_frames(pOutputBus->pNode, pOutputBus->outputBusIndex, pPreMixBuffer, framesToRead, &framesJustRead, globalTime + framesProcessed);
                        if (result == MA_SUCCESS || result == MA_AT_END) {
                            if (isSilentOutput == MA_FALSE) {   /* Don't mix if the node outputs silence. */
                                ma_mix_pcm_frames_f32(pRunningFramesOut, pPreMixBuffer, framesJustRead, inputChannels, /*volume*/1);
                            }
                        }

                        /* The pre-mix buffer is no longer required. */
                        ma_stack_free(((ma_node_base*)pInputNode)->pNodeGraph->pPreMixStack, pPreMixBuffer);
                        pPreMixBuffer = NULL;
                    }
                }

                framesProcessed += framesJustRead;

                /* If we reached the end or otherwise failed to read any data we need to finish up with this output node. */
                if (result != MA_SUCCESS) {
                    break;
                }

                /* If we didn't read anything, abort so we don't get stuck in a loop. */
                if (framesJustRead == 0) {
                    break;
                }
            }

            /* If it's the first attachment we didn't do any mixing. Any leftover samples need to be silenced. */
            if (pOutputBus == pFirst && framesProcessed < frameCount) {
                ma_silence_pcm_frames(ma_offset_pcm_frames_ptr(pFramesOut, framesProcessed, ma_format_f32, inputChannels), (frameCount - framesProcessed), ma_format_f32, inputChannels);
            }

            if (isSilentOutput == MA_FALSE) {
                doesOutputBufferHaveContent = MA_TRUE;
            }
        } else {
            /* Seek. */
            ma_node_read_pcm_frames(pOutputBus->pNode, pOutputBus->outputBusIndex, NULL, frameCount, &framesProcessed, globalTime);
        }
    }

    /* If we didn't output anything, output silence. */
    if (doesOutputBufferHaveContent == MA_FALSE && pFramesOut != NULL) {
        ma_silence_pcm_frames(pFramesOut, frameCount, ma_format_f32, inputChannels);
    }

    /* In this path we always "process" the entire amount. */
    *pFramesRead = frameCount;

    return result;
}


MA_API ma_node_config ma_node_config_init(void)
{
    ma_node_config config;

    MA_ZERO_OBJECT(&config);
    config.initialState   = ma_node_state_started;    /* Nodes are started by default. */
    config.inputBusCount  = MA_NODE_BUS_COUNT_UNKNOWN;
    config.outputBusCount = MA_NODE_BUS_COUNT_UNKNOWN;

    return config;
}

static ma_uint16 ma_node_config_get_cache_size_in_frames(const ma_node_config* pConfig, const ma_node_graph* pNodeGraph)
{
    ma_uint32 cacheSizeInFrames;

    (void)pConfig;

    if (pNodeGraph->processingSizeInFrames > 0) {
        cacheSizeInFrames = pNodeGraph->processingSizeInFrames;
    } else {
        cacheSizeInFrames = MA_DEFAULT_NODE_CACHE_CAP_IN_FRAMES_PER_BUS;
    }

    if (cacheSizeInFrames > 0xFFFF) {
        cacheSizeInFrames = 0xFFFF;
    }

    return (ma_uint16)cacheSizeInFrames;
}



static ma_result ma_node_detach_full(ma_node* pNode);

static float* ma_node_get_cached_input_ptr(ma_node* pNode, ma_uint32 inputBusIndex)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_uint32 iInputBus;
    float* pBasePtr;

    MA_ASSERT(pNodeBase != NULL);

    /* Input data is stored at the front of the buffer. */
    pBasePtr = pNodeBase->pCachedData;
    for (iInputBus = 0; iInputBus < inputBusIndex; iInputBus += 1) {
        pBasePtr += pNodeBase->cachedDataCapInFramesPerBus * ma_node_input_bus_get_channels(&pNodeBase->pInputBuses[iInputBus]);
    }

    return pBasePtr;
}

static float* ma_node_get_cached_output_ptr(ma_node* pNode, ma_uint32 outputBusIndex)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_uint32 iInputBus;
    ma_uint32 iOutputBus;
    float* pBasePtr;

    MA_ASSERT(pNodeBase != NULL);

    /* Cached output data starts after the input data. */
    pBasePtr = pNodeBase->pCachedData;
    for (iInputBus = 0; iInputBus < ma_node_get_input_bus_count(pNodeBase); iInputBus += 1) {
        pBasePtr += pNodeBase->cachedDataCapInFramesPerBus * ma_node_input_bus_get_channels(&pNodeBase->pInputBuses[iInputBus]);
    }

    for (iOutputBus = 0; iOutputBus < outputBusIndex; iOutputBus += 1) {
        pBasePtr += pNodeBase->cachedDataCapInFramesPerBus * ma_node_output_bus_get_channels(&pNodeBase->pOutputBuses[iOutputBus]);
    }

    return pBasePtr;
}


typedef struct
{
    size_t sizeInBytes;
    size_t inputBusOffset;
    size_t outputBusOffset;
    size_t cachedDataOffset;
    ma_uint32 inputBusCount;    /* So it doesn't have to be calculated twice. */
    ma_uint32 outputBusCount;   /* So it doesn't have to be calculated twice. */
} ma_node_heap_layout;

static ma_result ma_node_translate_bus_counts(const ma_node_config* pConfig, ma_uint32* pInputBusCount, ma_uint32* pOutputBusCount)
{
    ma_uint32 inputBusCount;
    ma_uint32 outputBusCount;

    MA_ASSERT(pConfig != NULL);
    MA_ASSERT(pInputBusCount  != NULL);
    MA_ASSERT(pOutputBusCount != NULL);

    /* Bus counts are determined by the vtable, unless they're set to `MA_NODE_BUS_COUNT_UNKNWON`, in which case they're taken from the config. */
    if (pConfig->vtable->inputBusCount == MA_NODE_BUS_COUNT_UNKNOWN) {
        inputBusCount = pConfig->inputBusCount;
    } else {
        inputBusCount = pConfig->vtable->inputBusCount;

        if (pConfig->inputBusCount != MA_NODE_BUS_COUNT_UNKNOWN && pConfig->inputBusCount != pConfig->vtable->inputBusCount) {
            return MA_INVALID_ARGS; /* Invalid configuration. You must not specify a conflicting bus count between the node's config and the vtable. */
        }
    }

    if (pConfig->vtable->outputBusCount == MA_NODE_BUS_COUNT_UNKNOWN) {
        outputBusCount = pConfig->outputBusCount;
    } else {
        outputBusCount = pConfig->vtable->outputBusCount;

        if (pConfig->outputBusCount != MA_NODE_BUS_COUNT_UNKNOWN && pConfig->outputBusCount != pConfig->vtable->outputBusCount) {
            return MA_INVALID_ARGS; /* Invalid configuration. You must not specify a conflicting bus count between the node's config and the vtable. */
        }
    }

    /* Bus counts must be within limits. */
    if (inputBusCount > MA_MAX_NODE_BUS_COUNT || outputBusCount > MA_MAX_NODE_BUS_COUNT) {
        return MA_INVALID_ARGS;
    }


    /* We must have channel counts for each bus. */
    if ((inputBusCount > 0 && pConfig->pInputChannels == NULL) || (outputBusCount > 0 && pConfig->pOutputChannels == NULL)) {
        return MA_INVALID_ARGS; /* You must specify channel counts for each input and output bus. */
    }


    /* Some special rules for passthrough nodes. */
    if ((pConfig->vtable->flags & MA_NODE_FLAG_PASSTHROUGH) != 0) {
        if ((pConfig->vtable->inputBusCount != 0 && pConfig->vtable->inputBusCount != 1) || pConfig->vtable->outputBusCount != 1) {
            return MA_INVALID_ARGS; /* Passthrough nodes must have exactly 1 output bus and either 0 or 1 input bus. */
        }

        if (pConfig->pInputChannels[0] != pConfig->pOutputChannels[0]) {
            return MA_INVALID_ARGS; /* Passthrough nodes must have the same number of channels between input and output nodes. */
        }
    }


    *pInputBusCount  = inputBusCount;
    *pOutputBusCount = outputBusCount;

    return MA_SUCCESS;
}

static ma_result ma_node_get_heap_layout(ma_node_graph* pNodeGraph, const ma_node_config* pConfig, ma_node_heap_layout* pHeapLayout)
{
    ma_result result;
    ma_uint32 inputBusCount;
    ma_uint32 outputBusCount;

    MA_ASSERT(pHeapLayout != NULL);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL || pConfig->vtable == NULL || pConfig->vtable->onProcess == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_node_translate_bus_counts(pConfig, &inputBusCount, &outputBusCount);
    if (result != MA_SUCCESS) {
        return result;
    }

    pHeapLayout->sizeInBytes = 0;

    /* Input buses. */
    if (inputBusCount > MA_MAX_NODE_LOCAL_BUS_COUNT) {
        pHeapLayout->inputBusOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += ma_align_64(sizeof(ma_node_input_bus) * inputBusCount);
    } else {
        pHeapLayout->inputBusOffset = MA_SIZE_MAX;  /* MA_SIZE_MAX indicates that no heap allocation is required for the input bus. */
    }

    /* Output buses. */
    if (outputBusCount > MA_MAX_NODE_LOCAL_BUS_COUNT) {
        pHeapLayout->outputBusOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += ma_align_64(sizeof(ma_node_output_bus) * outputBusCount);
    } else {
        pHeapLayout->outputBusOffset = MA_SIZE_MAX;
    }

    /*
    Cached audio data.

    We need to allocate memory for caching both input and output data. We have an optimization
    where no caching is necessary for specific conditions:

        - The node has 0 inputs and 1 output.

    When a node meets the above conditions, no cache is allocated.

    The size choice for this buffer is a little bit finicky. We don't want to be too wasteful by
    allocating too much, but at the same time we want it be large enough so that enough frames can
    be processed for each call to ma_node_read_pcm_frames() so that it keeps things efficient. For
    now I'm going with 10ms @ 48K which is 480 frames per bus. This is configurable at compile
    time. It might also be worth investigating whether or not this can be configured at run time.
    */
    if (inputBusCount == 0 && outputBusCount == 1) {
        /* Fast path. No cache needed. */
        pHeapLayout->cachedDataOffset = MA_SIZE_MAX;
    } else {
        /* Slow path. Cache needed. */
        size_t cachedDataSizeInBytes = 0;
        ma_uint32 cacheCapInFrames;
        ma_uint32 iBus;

        /* The capacity of the cache is based on our callback processing size. */
        cacheCapInFrames = ma_node_config_get_cache_size_in_frames(pConfig, pNodeGraph);

        for (iBus = 0; iBus < inputBusCount; iBus += 1) {
            cachedDataSizeInBytes += cacheCapInFrames * ma_get_bytes_per_frame(ma_format_f32, pConfig->pInputChannels[iBus]);
        }

        for (iBus = 0; iBus < outputBusCount; iBus += 1) {
            cachedDataSizeInBytes += cacheCapInFrames * ma_get_bytes_per_frame(ma_format_f32, pConfig->pOutputChannels[iBus]);
        }

        pHeapLayout->cachedDataOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += ma_align_64(cachedDataSizeInBytes);
    }


    /*
    Not technically part of the heap, but we can output the input and output bus counts so we can
    avoid a redundant call to ma_node_translate_bus_counts().
    */
    pHeapLayout->inputBusCount  = inputBusCount;
    pHeapLayout->outputBusCount = outputBusCount;

    /* Make sure allocation size is aligned. */
    pHeapLayout->sizeInBytes = ma_align_64(pHeapLayout->sizeInBytes);

    return MA_SUCCESS;
}

MA_API ma_result ma_node_get_heap_size(ma_node_graph* pNodeGraph, const ma_node_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_node_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_node_get_heap_layout(pNodeGraph, pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_node_init_preallocated(ma_node_graph* pNodeGraph, const ma_node_config* pConfig, void* pHeap, ma_node* pNode)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_result result;
    ma_node_heap_layout heapLayout;
    ma_uint32 iInputBus;
    ma_uint32 iOutputBus;

    if (pNodeBase == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNodeBase);

    result = ma_node_get_heap_layout(pNodeGraph, pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    pNodeBase->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pNodeBase->pNodeGraph     = pNodeGraph;
    pNodeBase->vtable         = pConfig->vtable;
    pNodeBase->state          = pConfig->initialState;
    pNodeBase->stateTimes[ma_node_state_started] = 0;
    pNodeBase->stateTimes[ma_node_state_stopped] = (ma_uint64)(ma_int64)-1; /* Weird casting for VC6 compatibility. */
    pNodeBase->inputBusCount  = heapLayout.inputBusCount;
    pNodeBase->outputBusCount = heapLayout.outputBusCount;

    if (heapLayout.inputBusOffset != MA_SIZE_MAX) {
        pNodeBase->pInputBuses = (ma_node_input_bus*)ma_offset_ptr(pHeap, heapLayout.inputBusOffset);
    } else {
        pNodeBase->pInputBuses = pNodeBase->_inputBuses;
    }

    if (heapLayout.outputBusOffset != MA_SIZE_MAX) {
        pNodeBase->pOutputBuses = (ma_node_output_bus*)ma_offset_ptr(pHeap, heapLayout.outputBusOffset);
    } else {
        pNodeBase->pOutputBuses = pNodeBase->_outputBuses;
    }

    if (heapLayout.cachedDataOffset != MA_SIZE_MAX) {
        pNodeBase->pCachedData = (float*)ma_offset_ptr(pHeap, heapLayout.cachedDataOffset);
        pNodeBase->cachedDataCapInFramesPerBus = ma_node_config_get_cache_size_in_frames(pConfig, pNodeGraph);
    } else {
        pNodeBase->pCachedData = NULL;
    }


    /* We need to run an initialization step for each input and output bus. */
    for (iInputBus = 0; iInputBus < ma_node_get_input_bus_count(pNodeBase); iInputBus += 1) {
        result = ma_node_input_bus_init(pConfig->pInputChannels[iInputBus], &pNodeBase->pInputBuses[iInputBus]);
        if (result != MA_SUCCESS) {
            return result;
        }
    }

    for (iOutputBus = 0; iOutputBus < ma_node_get_output_bus_count(pNodeBase); iOutputBus += 1) {
        result = ma_node_output_bus_init(pNodeBase, iOutputBus, pConfig->pOutputChannels[iOutputBus], &pNodeBase->pOutputBuses[iOutputBus]);
        if (result != MA_SUCCESS) {
            return result;
        }
    }


    /* The cached data needs to be initialized to silence (or a sine wave tone if we're debugging). */
    if (pNodeBase->pCachedData != NULL) {
        ma_uint32 iBus;

    #if 1   /* Toggle this between 0 and 1 to turn debugging on or off. 1 = fill with a sine wave for debugging; 0 = fill with silence. */
        /* For safety we'll go ahead and default the buffer to silence. */
        for (iBus = 0; iBus < ma_node_get_input_bus_count(pNodeBase); iBus += 1) {
            ma_silence_pcm_frames(ma_node_get_cached_input_ptr(pNode, iBus), pNodeBase->cachedDataCapInFramesPerBus, ma_format_f32, ma_node_input_bus_get_channels(&pNodeBase->pInputBuses[iBus]));
        }
        for (iBus = 0; iBus < ma_node_get_output_bus_count(pNodeBase); iBus += 1) {
            ma_silence_pcm_frames(ma_node_get_cached_output_ptr(pNode, iBus), pNodeBase->cachedDataCapInFramesPerBus, ma_format_f32, ma_node_output_bus_get_channels(&pNodeBase->pOutputBuses[iBus]));
        }
    #else
        /* For debugging. Default to a sine wave. */
        for (iBus = 0; iBus < ma_node_get_input_bus_count(pNodeBase); iBus += 1) {
            ma_debug_fill_pcm_frames_with_sine_wave(ma_node_get_cached_input_ptr(pNode, iBus), pNodeBase->cachedDataCapInFramesPerBus, ma_format_f32, ma_node_input_bus_get_channels(&pNodeBase->pInputBuses[iBus]), 48000);
        }
        for (iBus = 0; iBus < ma_node_get_output_bus_count(pNodeBase); iBus += 1) {
            ma_debug_fill_pcm_frames_with_sine_wave(ma_node_get_cached_output_ptr(pNode, iBus), pNodeBase->cachedDataCapInFramesPerBus, ma_format_f32, ma_node_output_bus_get_channels(&pNodeBase->pOutputBuses[iBus]), 48000);
        }
    #endif
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_node_init(ma_node_graph* pNodeGraph, const ma_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_node* pNode)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_node_get_heap_size(pNodeGraph, pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_node_init_preallocated(pNodeGraph, pConfig, pHeap, pNode);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    ((ma_node_base*)pNode)->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_node_uninit(ma_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;

    if (pNodeBase == NULL) {
        return;
    }

    /*
    The first thing we need to do is fully detach the node. This will detach all inputs and
    outputs. We need to do this first because it will sever the connection with the node graph and
    allow us to complete uninitialization without needing to worry about thread-safety with the
    audio thread. The detachment process will wait for any local processing of the node to finish.
    */
    ma_node_detach_full(pNode);

    /*
    At this point the node should be completely unreferenced by the node graph and we can finish up
    the uninitialization process without needing to worry about thread-safety.
    */
    if (pNodeBase->_ownsHeap) {
        ma_free(pNodeBase->_pHeap, pAllocationCallbacks);
    }
}

MA_API ma_node_graph* ma_node_get_node_graph(const ma_node* pNode)
{
    if (pNode == NULL) {
        return NULL;
    }

    return ((const ma_node_base*)pNode)->pNodeGraph;
}

MA_API ma_uint32 ma_node_get_input_bus_count(const ma_node* pNode)
{
    if (pNode == NULL) {
        return 0;
    }

    return ((ma_node_base*)pNode)->inputBusCount;
}

MA_API ma_uint32 ma_node_get_output_bus_count(const ma_node* pNode)
{
    if (pNode == NULL) {
        return 0;
    }

    return ((ma_node_base*)pNode)->outputBusCount;
}


MA_API ma_uint32 ma_node_get_input_channels(const ma_node* pNode, ma_uint32 inputBusIndex)
{
    const ma_node_base* pNodeBase = (const ma_node_base*)pNode;

    if (pNode == NULL) {
        return 0;
    }

    if (inputBusIndex >= ma_node_get_input_bus_count(pNode)) {
        return 0;   /* Invalid bus index. */
    }

    return ma_node_input_bus_get_channels(&pNodeBase->pInputBuses[inputBusIndex]);
}

MA_API ma_uint32 ma_node_get_output_channels(const ma_node* pNode, ma_uint32 outputBusIndex)
{
    const ma_node_base* pNodeBase = (const ma_node_base*)pNode;

    if (pNode == NULL) {
        return 0;
    }

    if (outputBusIndex >= ma_node_get_output_bus_count(pNode)) {
        return 0;   /* Invalid bus index. */
    }

    return ma_node_output_bus_get_channels(&pNodeBase->pOutputBuses[outputBusIndex]);
}


static ma_result ma_node_detach_full(ma_node* pNode)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_uint32 iInputBus;

    if (pNodeBase == NULL) {
        return MA_INVALID_ARGS;
    }

    /*
    Make sure the node is completely detached first. This will not return until the output bus is
    guaranteed to no longer be referenced by the audio thread.
    */
    ma_node_detach_all_output_buses(pNode);

    /*
    At this point all output buses will have been detached from the graph and we can be guaranteed
    that none of its input nodes will be getting processed by the graph. We can detach these
    without needing to worry about the audio thread touching them.
    */
    for (iInputBus = 0; iInputBus < ma_node_get_input_bus_count(pNode); iInputBus += 1) {
        ma_node_input_bus* pInputBus;
        ma_node_output_bus* pOutputBus;

        pInputBus = &pNodeBase->pInputBuses[iInputBus];

        /*
        This is important. We cannot be using ma_node_input_bus_first() or ma_node_input_bus_next(). Those
        functions are specifically for the audio thread. We'll instead just manually iterate using standard
        linked list logic. We don't need to worry about the audio thread referencing these because the step
        above severed the connection to the graph.
        */
        for (pOutputBus = (ma_node_output_bus*)ma_atomic_load_ptr(&pInputBus->head.pNext); pOutputBus != NULL; pOutputBus = (ma_node_output_bus*)ma_atomic_load_ptr(&pInputBus->head.pNext)) {
            ma_node_detach_output_bus(pOutputBus->pNode, pOutputBus->outputBusIndex);   /* This won't do any waiting in practice and should be efficient. */
        }
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_node_detach_output_bus(ma_node* pNode, ma_uint32 outputBusIndex)
{
    ma_result result = MA_SUCCESS;
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_node_base* pInputNodeBase;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    if (outputBusIndex >= ma_node_get_output_bus_count(pNode)) {
        return MA_INVALID_ARGS; /* Invalid output bus index. */
    }

    /* We need to lock the output bus because we need to inspect the input node and grab its input bus. */
    ma_node_output_bus_lock(&pNodeBase->pOutputBuses[outputBusIndex]);
    {
        pInputNodeBase = (ma_node_base*)pNodeBase->pOutputBuses[outputBusIndex].pInputNode;
        if (pInputNodeBase != NULL) {
            ma_node_input_bus_detach__no_output_bus_lock(&pInputNodeBase->pInputBuses[pNodeBase->pOutputBuses[outputBusIndex].inputNodeInputBusIndex], &pNodeBase->pOutputBuses[outputBusIndex]);
        }
    }
    ma_node_output_bus_unlock(&pNodeBase->pOutputBuses[outputBusIndex]);

    return result;
}

MA_API ma_result ma_node_detach_all_output_buses(ma_node* pNode)
{
    ma_uint32 iOutputBus;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    for (iOutputBus = 0; iOutputBus < ma_node_get_output_bus_count(pNode); iOutputBus += 1) {
        ma_node_detach_output_bus(pNode, iOutputBus);
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_node_attach_output_bus(ma_node* pNode, ma_uint32 outputBusIndex, ma_node* pOtherNode, ma_uint32 otherNodeInputBusIndex)
{
    ma_node_base* pNodeBase  = (ma_node_base*)pNode;
    ma_node_base* pOtherNodeBase = (ma_node_base*)pOtherNode;

    if (pNodeBase == NULL || pOtherNodeBase == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pNodeBase == pOtherNodeBase) {
        return MA_INVALID_OPERATION;    /* Cannot attach a node to itself. */
    }

    if (outputBusIndex >= ma_node_get_output_bus_count(pNode) || otherNodeInputBusIndex >= ma_node_get_input_bus_count(pOtherNode)) {
        return MA_INVALID_OPERATION;    /* Invalid bus index. */
    }

    /* The output channel count of the output node must be the same as the input channel count of the input node. */
    if (ma_node_get_output_channels(pNode, outputBusIndex) != ma_node_get_input_channels(pOtherNode, otherNodeInputBusIndex)) {
        return MA_INVALID_OPERATION;    /* Channel count is incompatible. */
    }

    /* This will deal with detaching if the output bus is already attached to something. */
    ma_node_input_bus_attach(&pOtherNodeBase->pInputBuses[otherNodeInputBusIndex], &pNodeBase->pOutputBuses[outputBusIndex], pOtherNode, otherNodeInputBusIndex);

    return MA_SUCCESS;
}

MA_API ma_result ma_node_set_output_bus_volume(ma_node* pNode, ma_uint32 outputBusIndex, float volume)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;

    if (pNodeBase == NULL) {
        return MA_INVALID_ARGS;
    }

    if (outputBusIndex >= ma_node_get_output_bus_count(pNode)) {
        return MA_INVALID_ARGS; /* Invalid bus index. */
    }

    return ma_node_output_bus_set_volume(&pNodeBase->pOutputBuses[outputBusIndex], volume);
}

MA_API float ma_node_get_output_bus_volume(const ma_node* pNode, ma_uint32 outputBusIndex)
{
    const ma_node_base* pNodeBase = (const ma_node_base*)pNode;

    if (pNodeBase == NULL) {
        return 0;
    }

    if (outputBusIndex >= ma_node_get_output_bus_count(pNode)) {
        return 0;   /* Invalid bus index. */
    }

    return ma_node_output_bus_get_volume(&pNodeBase->pOutputBuses[outputBusIndex]);
}

MA_API ma_result ma_node_set_state(ma_node* pNode, ma_node_state state)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;

    if (pNodeBase == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_exchange_i32(&pNodeBase->state, state);

    return MA_SUCCESS;
}

MA_API ma_node_state ma_node_get_state(const ma_node* pNode)
{
    const ma_node_base* pNodeBase = (const ma_node_base*)pNode;

    if (pNodeBase == NULL) {
        return ma_node_state_stopped;
    }

    return (ma_node_state)ma_atomic_load_i32(&pNodeBase->state);
}

MA_API ma_result ma_node_set_state_time(ma_node* pNode, ma_node_state state, ma_uint64 globalTime)
{
    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Validation check for safety since we'll be using this as an index into stateTimes[]. */
    if (state != ma_node_state_started && state != ma_node_state_stopped) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_exchange_64(&((ma_node_base*)pNode)->stateTimes[state], globalTime);

    return MA_SUCCESS;
}

MA_API ma_uint64 ma_node_get_state_time(const ma_node* pNode, ma_node_state state)
{
    if (pNode == NULL) {
        return 0;
    }

    /* Validation check for safety since we'll be using this as an index into stateTimes[]. */
    if (state != ma_node_state_started && state != ma_node_state_stopped) {
        return 0;
    }

    return ma_atomic_load_64(&((ma_node_base*)pNode)->stateTimes[state]);
}

MA_API ma_node_state ma_node_get_state_by_time(const ma_node* pNode, ma_uint64 globalTime)
{
    if (pNode == NULL) {
        return ma_node_state_stopped;
    }

    return ma_node_get_state_by_time_range(pNode, globalTime, globalTime);
}

MA_API ma_node_state ma_node_get_state_by_time_range(const ma_node* pNode, ma_uint64 globalTimeBeg, ma_uint64 globalTimeEnd)
{
    ma_node_state state;

    if (pNode == NULL) {
        return ma_node_state_stopped;
    }

    state = ma_node_get_state(pNode);

    /* An explicitly stopped node is always stopped. */
    if (state == ma_node_state_stopped) {
        return ma_node_state_stopped;
    }

    /*
    Getting here means the node is marked as started, but it may still not be truly started due to
    its start time not having been reached yet. Also, the stop time may have also been reached in
    which case it'll be considered stopped.
    */
    if (ma_node_get_state_time(pNode, ma_node_state_started) > globalTimeBeg) {
        return ma_node_state_stopped;   /* Start time has not yet been reached. */
    }

    if (ma_node_get_state_time(pNode, ma_node_state_stopped) <= globalTimeEnd) {
        return ma_node_state_stopped;   /* Stop time has been reached. */
    }

    /* Getting here means the node is marked as started and is within its start/stop times. */
    return ma_node_state_started;
}

MA_API ma_uint64 ma_node_get_time(const ma_node* pNode)
{
    if (pNode == NULL) {
        return 0;
    }

    return ma_atomic_load_64(&((ma_node_base*)pNode)->localTime);
}

MA_API ma_result ma_node_set_time(ma_node* pNode, ma_uint64 localTime)
{
    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_exchange_64(&((ma_node_base*)pNode)->localTime, localTime);

    return MA_SUCCESS;
}



static void ma_node_process_pcm_frames_internal(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;

    MA_ASSERT(pNode != NULL);

    if (pNodeBase->vtable->onProcess) {
        pNodeBase->vtable->onProcess(pNode, ppFramesIn, pFrameCountIn, ppFramesOut, pFrameCountOut);
    }
}

static ma_result ma_node_read_pcm_frames(ma_node* pNode, ma_uint32 outputBusIndex, float* pFramesOut, ma_uint32 frameCount, ma_uint32* pFramesRead, ma_uint64 globalTime)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_result result = MA_SUCCESS;
    ma_uint32 iInputBus;
    ma_uint32 iOutputBus;
    ma_uint32 inputBusCount;
    ma_uint32 outputBusCount;
    ma_uint32 totalFramesRead = 0;
    float* ppFramesIn[MA_MAX_NODE_BUS_COUNT];
    float* ppFramesOut[MA_MAX_NODE_BUS_COUNT];
    ma_uint64 globalTimeBeg;
    ma_uint64 globalTimeEnd;
    ma_uint64 startTime;
    ma_uint64 stopTime;
    ma_uint32 timeOffsetBeg;
    ma_uint32 timeOffsetEnd;
    ma_uint32 frameCountIn;
    ma_uint32 frameCountOut;

    /*
    pFramesRead is mandatory. It must be used to determine how many frames were read. It's normal and
    expected that the number of frames read may be different to that requested. Therefore, the caller
    must look at this value to correctly determine how many frames were read.
    */
    MA_ASSERT(pFramesRead != NULL); /* <-- If you've triggered this assert, you're using this function wrong. You *must* use this variable and inspect it after the call returns. */
    if (pFramesRead == NULL) {
        return MA_INVALID_ARGS;
    }

    *pFramesRead = 0;   /* Safety. */

    if (pNodeBase == NULL) {
        return MA_INVALID_ARGS;
    }

    if (outputBusIndex >= ma_node_get_output_bus_count(pNodeBase)) {
        return MA_INVALID_ARGS; /* Invalid output bus index. */
    }

    /* Don't do anything if we're in a stopped state. */
    if (ma_node_get_state_by_time_range(pNode, globalTime, globalTime + frameCount) != ma_node_state_started) {
        return MA_SUCCESS;  /* We're in a stopped state. This is not an error - we just need to not read anything. */
    }


    globalTimeBeg = globalTime;
    globalTimeEnd = globalTime + frameCount;
    startTime = ma_node_get_state_time(pNode, ma_node_state_started);
    stopTime  = ma_node_get_state_time(pNode, ma_node_state_stopped);

    /*
    At this point we know that we are inside our start/stop times. However, we may need to adjust
    our frame count and output pointer to accommodate since we could be straddling the time period
    that this function is getting called for.

    It's possible (and likely) that the start time does not line up with the output buffer. We
    therefore need to offset it by a number of frames to accommodate. The same thing applies for
    the stop time.
    */
    timeOffsetBeg = (globalTimeBeg < startTime) ? (ma_uint32)(globalTimeEnd - startTime) : 0;
    timeOffsetEnd = (globalTimeEnd > stopTime)  ? (ma_uint32)(globalTimeEnd - stopTime)  : 0;

    /* Trim based on the start offset. We need to silence the start of the buffer. */
    if (timeOffsetBeg > 0) {
        ma_silence_pcm_frames(pFramesOut, timeOffsetBeg, ma_format_f32, ma_node_get_output_channels(pNode, outputBusIndex));
        pFramesOut += timeOffsetBeg * ma_node_get_output_channels(pNode, outputBusIndex);
        frameCount -= timeOffsetBeg;
    }

    /* Trim based on the end offset. We don't need to silence the tail section because we'll just have a reduced value written to pFramesRead. */
    if (timeOffsetEnd > 0) {
        frameCount -= timeOffsetEnd;
    }


    /* We run on different paths depending on the bus counts. */
    inputBusCount  = ma_node_get_input_bus_count(pNode);
    outputBusCount = ma_node_get_output_bus_count(pNode);

    /*
    Run a simplified path when there are no inputs and one output. In this case there's nothing to
    actually read and we can go straight to output. This is a very common scenario because the vast
    majority of data source nodes will use this setup so this optimization I think is worthwhile.
    */
    if (inputBusCount == 0 && outputBusCount == 1) {
        /* Fast path. No need to read from input and no need for any caching. */
        frameCountIn  = 0;
        frameCountOut = frameCount;    /* Just read as much as we can. The callback will return what was actually read. */

        ppFramesOut[0] = pFramesOut;

        /*
        If it's a passthrough we won't be expecting the callback to output anything, so we'll
        need to pre-silence the output buffer.
        */
        if ((pNodeBase->vtable->flags & MA_NODE_FLAG_PASSTHROUGH) != 0) {
            ma_silence_pcm_frames(pFramesOut, frameCount, ma_format_f32, ma_node_get_output_channels(pNode, outputBusIndex));
        }

        ma_node_process_pcm_frames_internal(pNode, NULL, &frameCountIn, ppFramesOut, &frameCountOut);
        totalFramesRead = frameCountOut;
    } else {
        /* Slow path. Need to read input data. */
        if ((pNodeBase->vtable->flags & MA_NODE_FLAG_PASSTHROUGH) != 0) {
            /*
            Fast path. We're running a passthrough. We need to read directly into the output buffer, but
            still fire the callback so that event handling and trigger nodes can do their thing. Since
            it's a passthrough there's no need for any kind of caching logic.
            */
            MA_ASSERT(outputBusCount == inputBusCount);
            MA_ASSERT(outputBusCount == 1);
            MA_ASSERT(outputBusIndex == 0);

            /* We just read directly from input bus to output buffer, and then afterwards fire the callback. */
            ppFramesOut[0] = pFramesOut;
            ppFramesIn[0] = ppFramesOut[0];

            result = ma_node_input_bus_read_pcm_frames(pNodeBase, &pNodeBase->pInputBuses[0], ppFramesIn[0], frameCount, &totalFramesRead, globalTime);
            if (result == MA_SUCCESS) {
                /* Even though it's a passthrough, we still need to fire the callback. */
                frameCountIn  = totalFramesRead;
                frameCountOut = totalFramesRead;

                if (totalFramesRead > 0) {
                    ma_node_process_pcm_frames_internal(pNode, (const float**)ppFramesIn, &frameCountIn, ppFramesOut, &frameCountOut);  /* From GCC: expected 'const float **' but argument is of type 'float **'. Shouldn't this be implicit? Explicit cast to silence the warning. */
                }

                /*
                A passthrough should never have modified the input and output frame counts. If you're
                triggering these asserts you need to fix your processing callback.
                */
                MA_ASSERT(frameCountIn  == totalFramesRead);
                MA_ASSERT(frameCountOut == totalFramesRead);
            }
        } else {
            /* Slow path. Need to do caching. */
            ma_uint32 framesToProcessIn;
            ma_uint32 framesToProcessOut;
            ma_bool32 consumeNullInput = MA_FALSE;

            /*
            We use frameCount as a basis for the number of frames to read since that's what's being
            requested, however we still need to clamp it to whatever can fit in the cache.

            This will also be used as the basis for determining how many input frames to read. This is
            not ideal because it can result in too many input frames being read which introduces latency.
            To solve this, nodes can implement an optional callback called onGetRequiredInputFrameCount
            which is used as hint to miniaudio as to how many input frames it needs to read at a time. This
            callback is completely optional, and if it's not set, miniaudio will assume `frameCount`.

            This function will be called multiple times for each period of time, once for each output node.
            We cannot read from each input node each time this function is called. Instead we need to check
            whether or not this is first output bus to be read from for this time period, and if so, read
            from our input data.

            To determine whether or not we're ready to read data, we check a flag. There will be one flag
            for each output. When the flag is set, it means data has been read previously and that we're
            ready to advance time forward for our input nodes by reading fresh data.
            */
            framesToProcessOut = frameCount;
            if (framesToProcessOut > pNodeBase->cachedDataCapInFramesPerBus) {
                framesToProcessOut = pNodeBase->cachedDataCapInFramesPerBus;
            }

            framesToProcessIn  = frameCount;
            if (pNodeBase->vtable->onGetRequiredInputFrameCount) {
                pNodeBase->vtable->onGetRequiredInputFrameCount(pNode, framesToProcessOut, &framesToProcessIn); /* <-- It does not matter if this fails. */
            }
            if (framesToProcessIn > pNodeBase->cachedDataCapInFramesPerBus) {
                framesToProcessIn = pNodeBase->cachedDataCapInFramesPerBus;
            }


            MA_ASSERT(framesToProcessIn  <= 0xFFFF);
            MA_ASSERT(framesToProcessOut <= 0xFFFF);

            if (ma_node_output_bus_has_read(&pNodeBase->pOutputBuses[outputBusIndex])) {
                /* Getting here means we need to do another round of processing. */
                pNodeBase->cachedFrameCountOut = 0;

                for (;;) {
                    frameCountOut = 0;

                    /*
                    We need to prepare our output frame pointers for processing. In the same iteration we need
                    to mark every output bus as unread so that future calls to this function for different buses
                    for the current time period don't pull in data when they should instead be reading from cache.
                    */
                    for (iOutputBus = 0; iOutputBus < outputBusCount; iOutputBus += 1) {
                        ma_node_output_bus_set_has_read(&pNodeBase->pOutputBuses[iOutputBus], MA_FALSE); /* <-- This is what tells the next calls to this function for other output buses for this time period to read from cache instead of pulling in more data. */
                        ppFramesOut[iOutputBus] = ma_node_get_cached_output_ptr(pNode, iOutputBus);
                    }

                    /* We only need to read from input buses if there isn't already some data in the cache. */
                    if (pNodeBase->cachedFrameCountIn == 0) {
                        ma_uint32 maxFramesReadIn = 0;

                        /* Here is where we pull in data from the input buses. This is what will trigger an advance in time. */
                        for (iInputBus = 0; iInputBus < inputBusCount; iInputBus += 1) {
                            ma_uint32 framesRead;

                            /* The first thing to do is get the offset within our bulk allocation to store this input data. */
                            ppFramesIn[iInputBus] = ma_node_get_cached_input_ptr(pNode, iInputBus);

                            /* Once we've determined our destination pointer we can read. Note that we must inspect the number of frames read and fill any leftovers with silence for safety. */
                            result = ma_node_input_bus_read_pcm_frames(pNodeBase, &pNodeBase->pInputBuses[iInputBus], ppFramesIn[iInputBus], framesToProcessIn, &framesRead, globalTime);
                            if (result != MA_SUCCESS) {
                                /* It doesn't really matter if we fail because we'll just fill with silence. */
                                framesRead = 0; /* Just for safety, but I don't think it's really needed. */
                            }

                            /* TODO: Minor optimization opportunity here. If no frames were read and the buffer is already filled with silence, no need to re-silence it. */
                            /* Any leftover frames need to silenced for safety. */
                            if (framesRead < framesToProcessIn) {
                                ma_silence_pcm_frames(ppFramesIn[iInputBus] + (framesRead * ma_node_get_input_channels(pNodeBase, iInputBus)), (framesToProcessIn - framesRead), ma_format_f32, ma_node_get_input_channels(pNodeBase, iInputBus));
                            }

                            maxFramesReadIn = ma_max(maxFramesReadIn, framesRead);
                        }

                        /* This was a fresh load of input data so reset our consumption counter. */
                        pNodeBase->consumedFrameCountIn = 0;

                        /*
                        We don't want to keep processing if there's nothing to process, so set the number of cached
                        input frames to the maximum number we read from each attachment (the lesser will be padded
                        with silence). If we didn't read anything, this will be set to 0 and the entire buffer will
                        have been assigned to silence. This being equal to 0 is an important property for us because
                        it allows us to detect when NULL can be passed into the processing callback for the input
                        buffer for the purpose of continuous processing.
                        */
                        pNodeBase->cachedFrameCountIn = (ma_uint16)maxFramesReadIn;
                    } else {
                        /* We don't need to read anything, but we do need to prepare our input frame pointers. */
                        for (iInputBus = 0; iInputBus < inputBusCount; iInputBus += 1) {
                            ppFramesIn[iInputBus] = ma_node_get_cached_input_ptr(pNode, iInputBus) + (pNodeBase->consumedFrameCountIn * ma_node_get_input_channels(pNodeBase, iInputBus));
                        }
                    }

                    /*
                    At this point we have our input data so now we need to do some processing. Sneaky little
                    optimization here - we can set the pointer to the output buffer for this output bus so
                    that the final copy into the output buffer is done directly by onProcess().
                    */
                    if (pFramesOut != NULL) {
                        ppFramesOut[outputBusIndex] = ma_offset_pcm_frames_ptr_f32(pFramesOut, pNodeBase->cachedFrameCountOut, ma_node_get_output_channels(pNode, outputBusIndex));
                    }


                    /* Give the processing function the entire capacity of the output buffer. */
                    frameCountOut = (framesToProcessOut - pNodeBase->cachedFrameCountOut);

                    /*
                    We need to treat nodes with continuous processing a little differently. For these ones,
                    we always want to fire the callback with the requested number of frames, regardless of
                    pNodeBase->cachedFrameCountIn, which could be 0. Also, we want to check if we can pass
                    in NULL for the input buffer to the callback.
                    */
                    if ((pNodeBase->vtable->flags & MA_NODE_FLAG_CONTINUOUS_PROCESSING) != 0) {
                        /* We're using continuous processing. Make sure we specify the whole frame count at all times. */
                        frameCountIn = framesToProcessIn;    /* Give the processing function as much input data as we've got in the buffer, including any silenced padding from short reads. */

                        if ((pNodeBase->vtable->flags & MA_NODE_FLAG_ALLOW_NULL_INPUT) != 0 && pNodeBase->consumedFrameCountIn == 0 && pNodeBase->cachedFrameCountIn == 0) {
                            consumeNullInput = MA_TRUE;
                        } else {
                            consumeNullInput = MA_FALSE;
                        }

                        /*
                        Since we're using continuous processing we're always passing in a full frame count
                        regardless of how much input data was read. If this is greater than what we read as
                        input, we'll end up with an underflow. We instead need to make sure our cached frame
                        count is set to the number of frames we'll be passing to the data callback. Not
                        doing this will result in an underflow when we "consume" the cached data later on.

                        Note that this check needs to be done after the "consumeNullInput" check above because
                        we use the property of cachedFrameCountIn being 0 to determine whether or not we
                        should be passing in a null pointer to the processing callback for when the node is
                        configured with MA_NODE_FLAG_ALLOW_NULL_INPUT.
                        */
                        if (pNodeBase->cachedFrameCountIn < (ma_uint16)frameCountIn) {
                            pNodeBase->cachedFrameCountIn = (ma_uint16)frameCountIn;
                        }
                    } else {
                        frameCountIn = pNodeBase->cachedFrameCountIn;  /* Give the processing function as much valid input data as we've got. */
                        consumeNullInput = MA_FALSE;
                    }

                    /*
                    Process data slightly differently depending on whether or not we're consuming NULL
                    input (checked just above).
                    */
                    if (consumeNullInput) {
                        ma_node_process_pcm_frames_internal(pNode, NULL, &frameCountIn, ppFramesOut, &frameCountOut);
                    } else {
                        /*
                        We want to skip processing if there's no input data, but we can only do that safely if
                        we know that there is no chance of any output frames being produced. If continuous
                        processing is being used, this won't be a problem because the input frame count will
                        always be non-0. However, if continuous processing is *not* enabled and input and output
                        data is processed at different rates, we still need to process that last input frame
                        because there could be a few excess output frames needing to be produced from cached
                        data. The `MA_NODE_FLAG_DIFFERENT_PROCESSING_RATES` flag is used as the indicator for
                        determining whether or not we need to process the node even when there are no input
                        frames available right now.
                        */
                        if (frameCountIn > 0 || (pNodeBase->vtable->flags & MA_NODE_FLAG_DIFFERENT_PROCESSING_RATES) != 0) {
                            ma_node_process_pcm_frames_internal(pNode, (const float**)ppFramesIn, &frameCountIn, ppFramesOut, &frameCountOut);    /* From GCC: expected 'const float **' but argument is of type 'float **'. Shouldn't this be implicit? Explicit cast to silence the warning. */
                        } else {
                            frameCountOut = 0;  /* No data was processed. */
                        }
                    }

                    /*
                    Thanks to our sneaky optimization above we don't need to do any data copying directly into
                    the output buffer - the onProcess() callback just did that for us. We do, however, need to
                    apply the number of input and output frames that were processed. Note that due to continuous
                    processing above, we need to do explicit checks here. If we just consumed a NULL input
                    buffer it means that no actual input data was processed from the internal buffers and we
                    don't want to be modifying any counters.
                    */
                    if (consumeNullInput == MA_FALSE) {
                        pNodeBase->consumedFrameCountIn += (ma_uint16)frameCountIn;
                        pNodeBase->cachedFrameCountIn   -= (ma_uint16)frameCountIn;
                    }

                    /* The cached output frame count is always equal to what we just read. */
                    pNodeBase->cachedFrameCountOut += (ma_uint16)frameCountOut;

                    /* If we couldn't process any data, we're done. The loop needs to be terminated here or else we'll get stuck in a loop. */
                    if (pNodeBase->cachedFrameCountOut == framesToProcessOut || (frameCountOut == 0 && frameCountIn == 0)) {
                        break;
                    }
                }
            } else {
                /*
                We're not needing to read anything from the input buffer so just read directly from our
                already-processed data.
                */
                if (pFramesOut != NULL) {
                    ma_copy_pcm_frames(pFramesOut, ma_node_get_cached_output_ptr(pNodeBase, outputBusIndex), pNodeBase->cachedFrameCountOut, ma_format_f32, ma_node_get_output_channels(pNodeBase, outputBusIndex));
                }
            }

            /* The number of frames read is always equal to the number of cached output frames. */
            totalFramesRead = pNodeBase->cachedFrameCountOut;

            /* Now that we've read the data, make sure our read flag is set. */
            ma_node_output_bus_set_has_read(&pNodeBase->pOutputBuses[outputBusIndex], MA_TRUE);
        }
    }

    /* Apply volume, if necessary. */
    ma_apply_volume_factor_f32(pFramesOut, totalFramesRead * ma_node_get_output_channels(pNodeBase, outputBusIndex), ma_node_output_bus_get_volume(&pNodeBase->pOutputBuses[outputBusIndex]));

    /* Advance our local time forward. */
    ma_atomic_fetch_add_64(&pNodeBase->localTime, (ma_uint64)totalFramesRead);

    *pFramesRead = totalFramesRead + timeOffsetBeg; /* Must include the silenced section at the start of the buffer. */
    return result;
}




/* Data source node. */
MA_API ma_data_source_node_config ma_data_source_node_config_init(ma_data_source* pDataSource)
{
    ma_data_source_node_config config;

    MA_ZERO_OBJECT(&config);
    config.nodeConfig  = ma_node_config_init();
    config.pDataSource = pDataSource;

    return config;
}


static void ma_data_source_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_data_source_node* pDataSourceNode = (ma_data_source_node*)pNode;
    ma_format format;
    ma_uint32 channels;
    ma_uint32 frameCount;
    ma_uint64 framesRead = 0;

    MA_ASSERT(pDataSourceNode != NULL);
    MA_ASSERT(pDataSourceNode->pDataSource != NULL);
    MA_ASSERT(ma_node_get_input_bus_count(pDataSourceNode)  == 0);
    MA_ASSERT(ma_node_get_output_bus_count(pDataSourceNode) == 1);

    /* We don't want to read from ppFramesIn at all. Instead we read from the data source. */
    (void)ppFramesIn;
    (void)pFrameCountIn;

    frameCount = *pFrameCountOut;

    /* miniaudio should never be calling this with a frame count of zero. */
    MA_ASSERT(frameCount > 0);

    if (ma_data_source_get_data_format(pDataSourceNode->pDataSource, &format, &channels, NULL, NULL, 0) == MA_SUCCESS) { /* <-- Don't care about sample rate here. */
        /* The node graph system requires samples be in floating point format. This is checked in ma_data_source_node_init(). */
        MA_ASSERT(format == ma_format_f32);
        (void)format;   /* Just to silence some static analysis tools. */

        ma_data_source_read_pcm_frames(pDataSourceNode->pDataSource, ppFramesOut[0], frameCount, &framesRead);
    }

    *pFrameCountOut = (ma_uint32)framesRead;
}

static ma_node_vtable g_ma_data_source_node_vtable =
{
    ma_data_source_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    0,      /* 0 input buses. */
    1,      /* 1 output bus. */
    0
};

MA_API ma_result ma_data_source_node_init(ma_node_graph* pNodeGraph, const ma_data_source_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_data_source_node* pDataSourceNode)
{
    ma_result result;
    ma_format format;   /* For validating the format, which must be ma_format_f32. */
    ma_uint32 channels; /* For specifying the channel count of the output bus. */
    ma_node_config baseConfig;

    if (pDataSourceNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDataSourceNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_data_source_get_data_format(pConfig->pDataSource, &format, &channels, NULL, NULL, 0);    /* Don't care about sample rate. This will check pDataSource for NULL. */
    if (result != MA_SUCCESS) {
        return result;
    }

    MA_ASSERT(format == ma_format_f32); /* <-- If you've triggered this it means your data source is not outputting floating-point samples. You must configure your data source to use ma_format_f32. */
    if (format != ma_format_f32) {
        return MA_INVALID_ARGS; /* Invalid format. */
    }

    /* The channel count is defined by the data source. If the caller has manually changed the channels we just ignore it. */
    baseConfig = pConfig->nodeConfig;
    baseConfig.vtable = &g_ma_data_source_node_vtable;  /* Explicitly set the vtable here to prevent callers from setting it incorrectly. */

    /*
    The channel count is defined by the data source. It is invalid for the caller to manually set
    the channel counts in the config. `ma_data_source_node_config_init()` will have defaulted the
    channel count pointer to NULL which is how it must remain. If you trigger any of these asserts
    it means you're explicitly setting the channel count. Instead, configure the output channel
    count of your data source to be the necessary channel count.
    */
    if (baseConfig.pOutputChannels != NULL) {
        return MA_INVALID_ARGS;
    }

    baseConfig.pOutputChannels = &channels;

    result = ma_node_init(pNodeGraph, &baseConfig, pAllocationCallbacks, &pDataSourceNode->base);
    if (result != MA_SUCCESS) {
        return result;
    }

    pDataSourceNode->pDataSource = pConfig->pDataSource;

    return MA_SUCCESS;
}

MA_API void ma_data_source_node_uninit(ma_data_source_node* pDataSourceNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_node_uninit(&pDataSourceNode->base, pAllocationCallbacks);
}

MA_API ma_result ma_data_source_node_set_looping(ma_data_source_node* pDataSourceNode, ma_bool32 isLooping)
{
    if (pDataSourceNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_data_source_set_looping(pDataSourceNode->pDataSource, isLooping);
}

MA_API ma_bool32 ma_data_source_node_is_looping(ma_data_source_node* pDataSourceNode)
{
    if (pDataSourceNode == NULL) {
        return MA_FALSE;
    }

    return ma_data_source_is_looping(pDataSourceNode->pDataSource);
}



/* Splitter Node. */
MA_API ma_splitter_node_config ma_splitter_node_config_init(ma_uint32 channels)
{
    ma_splitter_node_config config;

    MA_ZERO_OBJECT(&config);
    config.nodeConfig     = ma_node_config_init();
    config.channels       = channels;
    config.outputBusCount = 2;

    return config;
}


static void ma_splitter_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_node_base* pNodeBase = (ma_node_base*)pNode;
    ma_uint32 iOutputBus;
    ma_uint32 channels;

    MA_ASSERT(pNodeBase != NULL);
    MA_ASSERT(ma_node_get_input_bus_count(pNodeBase) == 1);

    /* We don't need to consider the input frame count - it'll be the same as the output frame count and we process everything. */
    (void)pFrameCountIn;

    /* NOTE: This assumes the same number of channels for all inputs and outputs. This was checked in ma_splitter_node_init(). */
    channels = ma_node_get_input_channels(pNodeBase, 0);

    /* Splitting is just copying the first input bus and copying it over to each output bus. */
    for (iOutputBus = 0; iOutputBus < ma_node_get_output_bus_count(pNodeBase); iOutputBus += 1) {
        ma_copy_pcm_frames(ppFramesOut[iOutputBus], ppFramesIn[0], *pFrameCountOut, ma_format_f32, channels);
    }
}

static ma_node_vtable g_ma_splitter_node_vtable =
{
    ma_splitter_node_process_pcm_frames,
    NULL,                       /* onGetRequiredInputFrameCount */
    1,                          /* 1 input bus. */
    MA_NODE_BUS_COUNT_UNKNOWN,  /* The output bus count is specified on a per-node basis. */
    0
};

MA_API ma_result ma_splitter_node_init(ma_node_graph* pNodeGraph, const ma_splitter_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_splitter_node* pSplitterNode)
{
    ma_result result;
    ma_node_config baseConfig;
    ma_uint32 pInputChannels[1];
    ma_uint32 pOutputChannels[MA_MAX_NODE_BUS_COUNT];
    ma_uint32 iOutputBus;

    if (pSplitterNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pSplitterNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->outputBusCount > MA_MAX_NODE_BUS_COUNT) {
        return MA_INVALID_ARGS; /* Too many output buses. */
    }

    /* Splitters require the same number of channels between inputs and outputs. */
    pInputChannels[0]  = pConfig->channels;
    for (iOutputBus = 0; iOutputBus < pConfig->outputBusCount; iOutputBus += 1) {
        pOutputChannels[iOutputBus] = pConfig->channels;
    }

    baseConfig = pConfig->nodeConfig;
    baseConfig.vtable = &g_ma_splitter_node_vtable;
    baseConfig.pInputChannels  = pInputChannels;
    baseConfig.pOutputChannels = pOutputChannels;
    baseConfig.outputBusCount  = pConfig->outputBusCount;

    result = ma_node_init(pNodeGraph, &baseConfig, pAllocationCallbacks, &pSplitterNode->base);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to initialize the base node. */
    }

    return MA_SUCCESS;
}

MA_API void ma_splitter_node_uninit(ma_splitter_node* pSplitterNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_node_uninit(pSplitterNode, pAllocationCallbacks);
}


/*
Biquad Node
*/
MA_API ma_biquad_node_config ma_biquad_node_config_init(ma_uint32 channels, float b0, float b1, float b2, float a0, float a1, float a2)
{
    ma_biquad_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.biquad = ma_biquad_config_init(ma_format_f32, channels, b0, b1, b2, a0, a1, a2);

    return config;
}

static void ma_biquad_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_biquad_node* pLPFNode = (ma_biquad_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_biquad_process_pcm_frames(&pLPFNode->biquad, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_biquad_node_vtable =
{
    ma_biquad_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_biquad_node_init(ma_node_graph* pNodeGraph, const ma_biquad_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_biquad_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->biquad.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_biquad_init(&pConfig->biquad, pAllocationCallbacks, &pNode->biquad);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_biquad_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->biquad.channels;
    baseNodeConfig.pOutputChannels = &pConfig->biquad.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_biquad_node_reinit(const ma_biquad_config* pConfig, ma_biquad_node* pNode)
{
    ma_biquad_node* pLPFNode = (ma_biquad_node*)pNode;

    MA_ASSERT(pNode != NULL);

    return ma_biquad_reinit(pConfig, &pLPFNode->biquad);
}

MA_API void ma_biquad_node_uninit(ma_biquad_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_biquad_node* pLPFNode = (ma_biquad_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_biquad_uninit(&pLPFNode->biquad, pAllocationCallbacks);
}



/*
Low Pass Filter Node
*/
MA_API ma_lpf_node_config ma_lpf_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order)
{
    ma_lpf_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.lpf = ma_lpf_config_init(ma_format_f32, channels, sampleRate, cutoffFrequency, order);

    return config;
}

static void ma_lpf_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_lpf_node* pLPFNode = (ma_lpf_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_lpf_process_pcm_frames(&pLPFNode->lpf, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_lpf_node_vtable =
{
    ma_lpf_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_lpf_node_init(ma_node_graph* pNodeGraph, const ma_lpf_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_lpf_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->lpf.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_lpf_init(&pConfig->lpf, pAllocationCallbacks, &pNode->lpf);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_lpf_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->lpf.channels;
    baseNodeConfig.pOutputChannels = &pConfig->lpf.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_lpf_node_reinit(const ma_lpf_config* pConfig, ma_lpf_node* pNode)
{
    ma_lpf_node* pLPFNode = (ma_lpf_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_lpf_reinit(pConfig, &pLPFNode->lpf);
}

MA_API void ma_lpf_node_uninit(ma_lpf_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_lpf_node* pLPFNode = (ma_lpf_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_lpf_uninit(&pLPFNode->lpf, pAllocationCallbacks);
}



/*
High Pass Filter Node
*/
MA_API ma_hpf_node_config ma_hpf_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order)
{
    ma_hpf_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.hpf = ma_hpf_config_init(ma_format_f32, channels, sampleRate, cutoffFrequency, order);

    return config;
}

static void ma_hpf_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_hpf_node* pHPFNode = (ma_hpf_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_hpf_process_pcm_frames(&pHPFNode->hpf, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_hpf_node_vtable =
{
    ma_hpf_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_hpf_node_init(ma_node_graph* pNodeGraph, const ma_hpf_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_hpf_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->hpf.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_hpf_init(&pConfig->hpf, pAllocationCallbacks, &pNode->hpf);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_hpf_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->hpf.channels;
    baseNodeConfig.pOutputChannels = &pConfig->hpf.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_hpf_node_reinit(const ma_hpf_config* pConfig, ma_hpf_node* pNode)
{
    ma_hpf_node* pHPFNode = (ma_hpf_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_hpf_reinit(pConfig, &pHPFNode->hpf);
}

MA_API void ma_hpf_node_uninit(ma_hpf_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_hpf_node* pHPFNode = (ma_hpf_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_hpf_uninit(&pHPFNode->hpf, pAllocationCallbacks);
}




/*
Band Pass Filter Node
*/
MA_API ma_bpf_node_config ma_bpf_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double cutoffFrequency, ma_uint32 order)
{
    ma_bpf_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.bpf = ma_bpf_config_init(ma_format_f32, channels, sampleRate, cutoffFrequency, order);

    return config;
}

static void ma_bpf_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_bpf_node* pBPFNode = (ma_bpf_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_bpf_process_pcm_frames(&pBPFNode->bpf, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_bpf_node_vtable =
{
    ma_bpf_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_bpf_node_init(ma_node_graph* pNodeGraph, const ma_bpf_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_bpf_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->bpf.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_bpf_init(&pConfig->bpf, pAllocationCallbacks, &pNode->bpf);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_bpf_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->bpf.channels;
    baseNodeConfig.pOutputChannels = &pConfig->bpf.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_bpf_node_reinit(const ma_bpf_config* pConfig, ma_bpf_node* pNode)
{
    ma_bpf_node* pBPFNode = (ma_bpf_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_bpf_reinit(pConfig, &pBPFNode->bpf);
}

MA_API void ma_bpf_node_uninit(ma_bpf_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_bpf_node* pBPFNode = (ma_bpf_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_bpf_uninit(&pBPFNode->bpf, pAllocationCallbacks);
}



/*
Notching Filter Node
*/
MA_API ma_notch_node_config ma_notch_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double q, double frequency)
{
    ma_notch_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.notch = ma_notch2_config_init(ma_format_f32, channels, sampleRate, q, frequency);

    return config;
}

static void ma_notch_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_notch_node* pBPFNode = (ma_notch_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_notch2_process_pcm_frames(&pBPFNode->notch, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_notch_node_vtable =
{
    ma_notch_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_notch_node_init(ma_node_graph* pNodeGraph, const ma_notch_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_notch_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->notch.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_notch2_init(&pConfig->notch, pAllocationCallbacks, &pNode->notch);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_notch_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->notch.channels;
    baseNodeConfig.pOutputChannels = &pConfig->notch.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_notch_node_reinit(const ma_notch_config* pConfig, ma_notch_node* pNode)
{
    ma_notch_node* pNotchNode = (ma_notch_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_notch2_reinit(pConfig, &pNotchNode->notch);
}

MA_API void ma_notch_node_uninit(ma_notch_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_notch_node* pNotchNode = (ma_notch_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_notch2_uninit(&pNotchNode->notch, pAllocationCallbacks);
}



/*
Peaking Filter Node
*/
MA_API ma_peak_node_config ma_peak_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double q, double frequency)
{
    ma_peak_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.peak = ma_peak2_config_init(ma_format_f32, channels, sampleRate, gainDB, q, frequency);

    return config;
}

static void ma_peak_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_peak_node* pBPFNode = (ma_peak_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_peak2_process_pcm_frames(&pBPFNode->peak, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_peak_node_vtable =
{
    ma_peak_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_peak_node_init(ma_node_graph* pNodeGraph, const ma_peak_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_peak_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->peak.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_peak2_init(&pConfig->peak, pAllocationCallbacks, &pNode->peak);
    if (result != MA_SUCCESS) {
        ma_node_uninit(pNode, pAllocationCallbacks);
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_peak_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->peak.channels;
    baseNodeConfig.pOutputChannels = &pConfig->peak.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_peak_node_reinit(const ma_peak_config* pConfig, ma_peak_node* pNode)
{
    ma_peak_node* pPeakNode = (ma_peak_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_peak2_reinit(pConfig, &pPeakNode->peak);
}

MA_API void ma_peak_node_uninit(ma_peak_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_peak_node* pPeakNode = (ma_peak_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_peak2_uninit(&pPeakNode->peak, pAllocationCallbacks);
}



/*
Low Shelf Filter Node
*/
MA_API ma_loshelf_node_config ma_loshelf_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double q, double frequency)
{
    ma_loshelf_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.loshelf = ma_loshelf2_config_init(ma_format_f32, channels, sampleRate, gainDB, q, frequency);

    return config;
}

static void ma_loshelf_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_loshelf_node* pBPFNode = (ma_loshelf_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_loshelf2_process_pcm_frames(&pBPFNode->loshelf, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_loshelf_node_vtable =
{
    ma_loshelf_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_loshelf_node_init(ma_node_graph* pNodeGraph, const ma_loshelf_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_loshelf_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->loshelf.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_loshelf2_init(&pConfig->loshelf, pAllocationCallbacks, &pNode->loshelf);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_loshelf_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->loshelf.channels;
    baseNodeConfig.pOutputChannels = &pConfig->loshelf.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_loshelf_node_reinit(const ma_loshelf_config* pConfig, ma_loshelf_node* pNode)
{
    ma_loshelf_node* pLoshelfNode = (ma_loshelf_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_loshelf2_reinit(pConfig, &pLoshelfNode->loshelf);
}

MA_API void ma_loshelf_node_uninit(ma_loshelf_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_loshelf_node* pLoshelfNode = (ma_loshelf_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_loshelf2_uninit(&pLoshelfNode->loshelf, pAllocationCallbacks);
}



/*
High Shelf Filter Node
*/
MA_API ma_hishelf_node_config ma_hishelf_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, double gainDB, double q, double frequency)
{
    ma_hishelf_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.hishelf = ma_hishelf2_config_init(ma_format_f32, channels, sampleRate, gainDB, q, frequency);

    return config;
}

static void ma_hishelf_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_hishelf_node* pBPFNode = (ma_hishelf_node*)pNode;

    MA_ASSERT(pNode != NULL);
    (void)pFrameCountIn;

    ma_hishelf2_process_pcm_frames(&pBPFNode->hishelf, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_hishelf_node_vtable =
{
    ma_hishelf_node_process_pcm_frames,
    NULL,   /* onGetRequiredInputFrameCount */
    1,      /* One input. */
    1,      /* One output. */
    0       /* Default flags. */
};

MA_API ma_result ma_hishelf_node_init(ma_node_graph* pNodeGraph, const ma_hishelf_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_hishelf_node* pNode)
{
    ma_result result;
    ma_node_config baseNodeConfig;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pNode);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->hishelf.format != ma_format_f32) {
        return MA_INVALID_ARGS; /* The format must be f32. */
    }

    result = ma_hishelf2_init(&pConfig->hishelf, pAllocationCallbacks, &pNode->hishelf);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseNodeConfig = ma_node_config_init();
    baseNodeConfig.vtable          = &g_ma_hishelf_node_vtable;
    baseNodeConfig.pInputChannels  = &pConfig->hishelf.channels;
    baseNodeConfig.pOutputChannels = &pConfig->hishelf.channels;

    result = ma_node_init(pNodeGraph, &baseNodeConfig, pAllocationCallbacks, pNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    return result;
}

MA_API ma_result ma_hishelf_node_reinit(const ma_hishelf_config* pConfig, ma_hishelf_node* pNode)
{
    ma_hishelf_node* pHishelfNode = (ma_hishelf_node*)pNode;

    if (pNode == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_hishelf2_reinit(pConfig, &pHishelfNode->hishelf);
}

MA_API void ma_hishelf_node_uninit(ma_hishelf_node* pNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_hishelf_node* pHishelfNode = (ma_hishelf_node*)pNode;

    if (pNode == NULL) {
        return;
    }

    ma_node_uninit(pNode, pAllocationCallbacks);
    ma_hishelf2_uninit(&pHishelfNode->hishelf, pAllocationCallbacks);
}




MA_API ma_delay_node_config ma_delay_node_config_init(ma_uint32 channels, ma_uint32 sampleRate, ma_uint32 delayInFrames, float decay)
{
    ma_delay_node_config config;

    config.nodeConfig = ma_node_config_init();
    config.delay = ma_delay_config_init(channels, sampleRate, delayInFrames, decay);

    return config;
}


static void ma_delay_node_process_pcm_frames(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_delay_node* pDelayNode = (ma_delay_node*)pNode;

    (void)pFrameCountIn;

    ma_delay_process_pcm_frames(&pDelayNode->delay, ppFramesOut[0], ppFramesIn[0], *pFrameCountOut);
}

static ma_node_vtable g_ma_delay_node_vtable =
{
    ma_delay_node_process_pcm_frames,
    NULL,
    1,  /* 1 input channels. */
    1,  /* 1 output channel. */
    MA_NODE_FLAG_CONTINUOUS_PROCESSING  /* Delay requires continuous processing to ensure the tail get's processed. */
};

MA_API ma_result ma_delay_node_init(ma_node_graph* pNodeGraph, const ma_delay_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_delay_node* pDelayNode)
{
    ma_result result;
    ma_node_config baseConfig;

    if (pDelayNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pDelayNode);

    result = ma_delay_init(&pConfig->delay, pAllocationCallbacks, &pDelayNode->delay);
    if (result != MA_SUCCESS) {
        return result;
    }

    baseConfig = pConfig->nodeConfig;
    baseConfig.vtable          = &g_ma_delay_node_vtable;
    baseConfig.pInputChannels  = &pConfig->delay.channels;
    baseConfig.pOutputChannels = &pConfig->delay.channels;

    result = ma_node_init(pNodeGraph, &baseConfig, pAllocationCallbacks, &pDelayNode->baseNode);
    if (result != MA_SUCCESS) {
        ma_delay_uninit(&pDelayNode->delay, pAllocationCallbacks);
        return result;
    }

    return result;
}

MA_API void ma_delay_node_uninit(ma_delay_node* pDelayNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pDelayNode == NULL) {
        return;
    }

    /* The base node is always uninitialized first. */
    ma_node_uninit(pDelayNode, pAllocationCallbacks);
    ma_delay_uninit(&pDelayNode->delay, pAllocationCallbacks);
}

MA_API void ma_delay_node_set_wet(ma_delay_node* pDelayNode, float value)
{
    if (pDelayNode == NULL) {
        return;
    }

    ma_delay_set_wet(&pDelayNode->delay, value);
}

MA_API float ma_delay_node_get_wet(const ma_delay_node* pDelayNode)
{
    if (pDelayNode == NULL) {
        return 0;
    }

    return ma_delay_get_wet(&pDelayNode->delay);
}

MA_API void ma_delay_node_set_dry(ma_delay_node* pDelayNode, float value)
{
    if (pDelayNode == NULL) {
        return;
    }

    ma_delay_set_dry(&pDelayNode->delay, value);
}

MA_API float ma_delay_node_get_dry(const ma_delay_node* pDelayNode)
{
    if (pDelayNode == NULL) {
        return 0;
    }

    return ma_delay_get_dry(&pDelayNode->delay);
}

MA_API void ma_delay_node_set_decay(ma_delay_node* pDelayNode, float value)
{
    if (pDelayNode == NULL) {
        return;
    }

    ma_delay_set_decay(&pDelayNode->delay, value);
}

MA_API float ma_delay_node_get_decay(const ma_delay_node* pDelayNode)
{
    if (pDelayNode == NULL) {
        return 0;
    }

    return ma_delay_get_decay(&pDelayNode->delay);
}
#endif  /* MA_NO_NODE_GRAPH */


/* SECTION: miniaudio_engine.c */
#if !defined(MA_NO_ENGINE) && !defined(MA_NO_NODE_GRAPH)
/**************************************************************************************************************************************************************

Engine

**************************************************************************************************************************************************************/
#define MA_SEEK_TARGET_NONE         (~(ma_uint64)0)


static void ma_sound_set_at_end(ma_sound* pSound, ma_bool32 atEnd)
{
    MA_ASSERT(pSound != NULL);
    ma_atomic_exchange_32(&pSound->atEnd, atEnd);

    /* Fire any callbacks or events. */
    if (atEnd) {
        if (pSound->endCallback != NULL) {
            pSound->endCallback(pSound->pEndCallbackUserData, pSound);
        }
    }
}

static ma_bool32 ma_sound_get_at_end(const ma_sound* pSound)
{
    MA_ASSERT(pSound != NULL);
    return ma_atomic_load_32(&pSound->atEnd);
}


MA_API ma_engine_node_config ma_engine_node_config_init(ma_engine* pEngine, ma_engine_node_type type, ma_uint32 flags)
{
    ma_engine_node_config config;

    MA_ZERO_OBJECT(&config);
    config.pEngine                  = pEngine;
    config.type                     = type;
    config.isPitchDisabled          = (flags & MA_SOUND_FLAG_NO_PITCH) != 0;
    config.isSpatializationDisabled = (flags & MA_SOUND_FLAG_NO_SPATIALIZATION) != 0;
    config.monoExpansionMode        = pEngine->monoExpansionMode;

    return config;
}


static void ma_engine_node_update_pitch_if_required(ma_engine_node* pEngineNode)
{
    ma_bool32 isUpdateRequired = MA_FALSE;
    float newPitch;

    MA_ASSERT(pEngineNode != NULL);

    newPitch = ma_atomic_load_explicit_f32(&pEngineNode->pitch, ma_atomic_memory_order_acquire);

    if (pEngineNode->oldPitch != newPitch) {
        pEngineNode->oldPitch  = newPitch;
        isUpdateRequired = MA_TRUE;
    }

    if (pEngineNode->oldDopplerPitch != pEngineNode->spatializer.dopplerPitch) {
        pEngineNode->oldDopplerPitch  = pEngineNode->spatializer.dopplerPitch;
        isUpdateRequired = MA_TRUE;
    }

    if (isUpdateRequired) {
        float basePitch = (float)pEngineNode->sampleRate / ma_engine_get_sample_rate(pEngineNode->pEngine);
        ma_linear_resampler_set_rate_ratio(&pEngineNode->resampler, basePitch * pEngineNode->oldPitch * pEngineNode->oldDopplerPitch);
    }
}

static ma_bool32 ma_engine_node_is_pitching_enabled(const ma_engine_node* pEngineNode)
{
    MA_ASSERT(pEngineNode != NULL);

    /* Don't try to be clever by skipping resampling in the pitch=1 case or else you'll glitch when moving away from 1. */
    return !ma_atomic_load_explicit_32(&pEngineNode->isPitchDisabled, ma_atomic_memory_order_acquire);
}

static ma_bool32 ma_engine_node_is_spatialization_enabled(const ma_engine_node* pEngineNode)
{
    MA_ASSERT(pEngineNode != NULL);

    return !ma_atomic_load_explicit_32(&pEngineNode->isSpatializationDisabled, ma_atomic_memory_order_acquire);
}

static ma_uint64 ma_engine_node_get_required_input_frame_count(const ma_engine_node* pEngineNode, ma_uint64 outputFrameCount)
{
    ma_uint64 inputFrameCount = 0;

    if (ma_engine_node_is_pitching_enabled(pEngineNode)) {
        ma_result result = ma_linear_resampler_get_required_input_frame_count(&pEngineNode->resampler, outputFrameCount, &inputFrameCount);
        if (result != MA_SUCCESS) {
            inputFrameCount = 0;
        }
    } else {
        inputFrameCount = outputFrameCount;    /* No resampling, so 1:1. */
    }

    return inputFrameCount;
}

static ma_result ma_engine_node_set_volume(ma_engine_node* pEngineNode, float volume)
{
    if (pEngineNode == NULL) {
        return MA_INVALID_ARGS;
    }

    ma_atomic_float_set(&pEngineNode->volume, volume);

    /* If we're not smoothing we should bypass the volume gainer entirely. */
    if (pEngineNode->volumeSmoothTimeInPCMFrames == 0) {
        /* We should always have an active spatializer because it can be enabled and disabled dynamically. We can just use that for holding our volume. */
        ma_spatializer_set_master_volume(&pEngineNode->spatializer, volume);
    } else {
        /* We're using volume smoothing, so apply the master volume to the gainer. */
        ma_gainer_set_gain(&pEngineNode->volumeGainer, volume);
    }

    return MA_SUCCESS;
}

static ma_result ma_engine_node_get_volume(const ma_engine_node* pEngineNode, float* pVolume)
{
    if (pVolume == NULL) {
        return MA_INVALID_ARGS;
    }

    *pVolume = 0.0f;

    if (pEngineNode == NULL) {
        return MA_INVALID_ARGS;
    }

    *pVolume = ma_atomic_float_get((ma_atomic_float*)&pEngineNode->volume);

    return MA_SUCCESS;
}


static void ma_engine_node_process_pcm_frames__general(ma_engine_node* pEngineNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    ma_uint32 frameCountIn;
    ma_uint32 frameCountOut;
    ma_uint32 totalFramesProcessedIn;
    ma_uint32 totalFramesProcessedOut;
    ma_uint32 channelsIn;
    ma_uint32 channelsOut;
    ma_bool32 isPitchingEnabled;
    ma_bool32 isFadingEnabled;
    ma_bool32 isSpatializationEnabled;
    ma_bool32 isPanningEnabled;
    ma_bool32 isVolumeSmoothingEnabled;

    frameCountIn  = *pFrameCountIn;
    frameCountOut = *pFrameCountOut;

    channelsIn  = ma_spatializer_get_input_channels(&pEngineNode->spatializer);
    channelsOut = ma_spatializer_get_output_channels(&pEngineNode->spatializer);

    totalFramesProcessedIn  = 0;
    totalFramesProcessedOut = 0;

    /* Update the fader if applicable. */
    {
        ma_uint64 fadeLengthInFrames = ma_atomic_uint64_get(&pEngineNode->fadeSettings.fadeLengthInFrames);
        if (fadeLengthInFrames != ~(ma_uint64)0) {
            float fadeVolumeBeg = ma_atomic_float_get(&pEngineNode->fadeSettings.volumeBeg);
            float fadeVolumeEnd = ma_atomic_float_get(&pEngineNode->fadeSettings.volumeEnd);
            ma_int64 fadeStartOffsetInFrames = (ma_int64)ma_atomic_uint64_get(&pEngineNode->fadeSettings.absoluteGlobalTimeInFrames);
            if (fadeStartOffsetInFrames == (ma_int64)(~(ma_uint64)0)) {
                fadeStartOffsetInFrames = 0;
            } else {
                fadeStartOffsetInFrames -= ma_engine_get_time_in_pcm_frames(pEngineNode->pEngine);
            }

            ma_fader_set_fade_ex(&pEngineNode->fader, fadeVolumeBeg, fadeVolumeEnd, fadeLengthInFrames, fadeStartOffsetInFrames);

            /* Reset the fade length so we don't erroneously apply it again. */
            ma_atomic_uint64_set(&pEngineNode->fadeSettings.fadeLengthInFrames, ~(ma_uint64)0);
        }
    }

    isPitchingEnabled        = ma_engine_node_is_pitching_enabled(pEngineNode);
    isFadingEnabled          = pEngineNode->fader.volumeBeg != 1 || pEngineNode->fader.volumeEnd != 1;
    isSpatializationEnabled  = ma_engine_node_is_spatialization_enabled(pEngineNode);
    isPanningEnabled         = pEngineNode->panner.pan != 0 && channelsOut != 1;
    isVolumeSmoothingEnabled = pEngineNode->volumeSmoothTimeInPCMFrames > 0;

    /* Keep going while we've still got data available for processing. */
    while (totalFramesProcessedOut < frameCountOut) {
        /*
        We need to process in a specific order. We always do resampling first because it's likely
        we're going to be increasing the channel count after spatialization. Also, I want to do
        fading based on the output sample rate.

        We'll first read into a buffer from the resampler. Then we'll do all processing that
        operates on the on the input channel count. We'll then get the spatializer to output to
        the output buffer and then do all effects from that point directly in the output buffer
        in-place.

        Note that we're always running the resampler if pitching is enabled, even when the pitch
        is 1. If we try to be clever and skip resampling when the pitch is 1, we'll get a glitch
        when we move away from 1, back to 1, and then away from 1 again. We'll want to implement
        any pitch=1 optimizations in the resampler itself.

        There's a small optimization here that we'll utilize since it might be a fairly common
        case. When the input and output channel counts are the same, we'll read straight into the
        output buffer from the resampler and do everything in-place.
        */
        const float* pRunningFramesIn;
        float* pRunningFramesOut;
        float* pWorkingBuffer;   /* This is the buffer that we'll be processing frames in. This is in input channels. */
        float temp[MA_DATA_CONVERTER_STACK_BUFFER_SIZE / sizeof(float)];
        ma_uint32 tempCapInFrames = ma_countof(temp) / channelsIn;
        ma_uint32 framesAvailableIn;
        ma_uint32 framesAvailableOut;
        ma_uint32 framesJustProcessedIn;
        ma_uint32 framesJustProcessedOut;
        ma_bool32 isWorkingBufferValid = MA_FALSE;

        framesAvailableIn  = frameCountIn  - totalFramesProcessedIn;
        framesAvailableOut = frameCountOut - totalFramesProcessedOut;

        pRunningFramesIn  = ma_offset_pcm_frames_const_ptr_f32(ppFramesIn[0], totalFramesProcessedIn, channelsIn);
        pRunningFramesOut = ma_offset_pcm_frames_ptr_f32(ppFramesOut[0], totalFramesProcessedOut, channelsOut);

        if (channelsIn == channelsOut) {
            /* Fast path. Channel counts are the same. No need for an intermediary input buffer. */
            pWorkingBuffer = pRunningFramesOut;
        } else {
            /* Slow path. Channel counts are different. Need to use an intermediary input buffer. */
            pWorkingBuffer = temp;
            if (framesAvailableOut > tempCapInFrames) {
                framesAvailableOut = tempCapInFrames;
            }
        }

        /* First is resampler. */
        if (isPitchingEnabled) {
            ma_uint64 resampleFrameCountIn  = framesAvailableIn;
            ma_uint64 resampleFrameCountOut = framesAvailableOut;

            ma_linear_resampler_process_pcm_frames(&pEngineNode->resampler, pRunningFramesIn, &resampleFrameCountIn, pWorkingBuffer, &resampleFrameCountOut);
            isWorkingBufferValid = MA_TRUE;

            framesJustProcessedIn  = (ma_uint32)resampleFrameCountIn;
            framesJustProcessedOut = (ma_uint32)resampleFrameCountOut;
        } else {
            framesJustProcessedIn  = ma_min(framesAvailableIn, framesAvailableOut);
            framesJustProcessedOut = framesJustProcessedIn; /* When no resampling is being performed, the number of output frames is the same as input frames. */
        }

        /* Fading. */
        if (isFadingEnabled) {
            if (isWorkingBufferValid) {
                ma_fader_process_pcm_frames(&pEngineNode->fader, pWorkingBuffer, pWorkingBuffer, framesJustProcessedOut);   /* In-place processing. */
            } else {
                ma_fader_process_pcm_frames(&pEngineNode->fader, pWorkingBuffer, pRunningFramesIn, framesJustProcessedOut);
                isWorkingBufferValid = MA_TRUE;
            }
        }

        /*
        If we're using smoothing, we won't be applying volume via the spatializer, but instead from a ma_gainer. In this case
        we'll want to apply our volume now.
        */
        if (isVolumeSmoothingEnabled) {
            if (isWorkingBufferValid) {
                ma_gainer_process_pcm_frames(&pEngineNode->volumeGainer, pWorkingBuffer, pWorkingBuffer, framesJustProcessedOut);
            } else {
                ma_gainer_process_pcm_frames(&pEngineNode->volumeGainer, pWorkingBuffer, pRunningFramesIn, framesJustProcessedOut);
                isWorkingBufferValid = MA_TRUE;
            }
        }

        /*
        If at this point we still haven't actually done anything with the working buffer we need
        to just read straight from the input buffer.
        */
        if (isWorkingBufferValid == MA_FALSE) {
            pWorkingBuffer = (float*)pRunningFramesIn;  /* Naughty const cast, but it's safe at this point because we won't ever be writing to it from this point out. */
        }

        /* Spatialization. */
        if (isSpatializationEnabled) {
            ma_uint32 iListener;

            /*
            When determining the listener to use, we first check to see if the sound is pinned to a
            specific listener. If so, we use that. Otherwise we just use the closest listener.
            */
            if (pEngineNode->pinnedListenerIndex != MA_LISTENER_INDEX_CLOSEST && pEngineNode->pinnedListenerIndex < ma_engine_get_listener_count(pEngineNode->pEngine)) {
                iListener = pEngineNode->pinnedListenerIndex;
            } else {
                ma_vec3f spatializerPosition = ma_spatializer_get_position(&pEngineNode->spatializer);
                iListener = ma_engine_find_closest_listener(pEngineNode->pEngine, spatializerPosition.x, spatializerPosition.y, spatializerPosition.z);
            }

            ma_spatializer_process_pcm_frames(&pEngineNode->spatializer, &pEngineNode->pEngine->listeners[iListener], pRunningFramesOut, pWorkingBuffer, framesJustProcessedOut);
        } else {
            /* No spatialization, but we still need to do channel conversion and master volume. */
            float volume;
            ma_engine_node_get_volume(pEngineNode, &volume);    /* Should never fail. */

            if (channelsIn == channelsOut) {
                /* No channel conversion required. Just copy straight to the output buffer. */
                if (isVolumeSmoothingEnabled) {
                    /* Volume has already been applied. Just copy straight to the output buffer. */
                    ma_copy_pcm_frames(pRunningFramesOut, pWorkingBuffer, framesJustProcessedOut * channelsOut, ma_format_f32, channelsOut);
                } else {
                    /* Volume has not been applied yet. Copy and apply volume in the same pass. */
                    ma_copy_and_apply_volume_factor_f32(pRunningFramesOut, pWorkingBuffer, framesJustProcessedOut * channelsOut, volume);
                }
            } else {
                /* Channel conversion required. TODO: Add support for channel maps here. */
                ma_channel_map_apply_f32(pRunningFramesOut, NULL, channelsOut, pWorkingBuffer, NULL, channelsIn, framesJustProcessedOut, ma_channel_mix_mode_simple, pEngineNode->monoExpansionMode);

                /* If we're using smoothing, the volume will have already been applied. */
                if (!isVolumeSmoothingEnabled) {
                    ma_apply_volume_factor_f32(pRunningFramesOut, framesJustProcessedOut * channelsOut, volume);
                }
            }
        }

        /* At this point we can guarantee that the output buffer contains valid data. We can process everything in place now. */

        /* Panning. */
        if (isPanningEnabled) {
            ma_panner_process_pcm_frames(&pEngineNode->panner, pRunningFramesOut, pRunningFramesOut, framesJustProcessedOut);   /* In-place processing. */
        }

        /* We're done for this chunk. */
        totalFramesProcessedIn  += framesJustProcessedIn;
        totalFramesProcessedOut += framesJustProcessedOut;

        /* If we didn't process any output frames this iteration it means we've either run out of input data, or run out of room in the output buffer. */
        if (framesJustProcessedOut == 0) {
            break;
        }
    }

    /* At this point we're done processing. */
    *pFrameCountIn  = totalFramesProcessedIn;
    *pFrameCountOut = totalFramesProcessedOut;
}

static void ma_engine_node_process_pcm_frames__sound(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    /* For sounds, we need to first read from the data source. Then we need to apply the engine effects (pan, pitch, fades, etc.). */
    ma_result result = MA_SUCCESS;
    ma_sound* pSound = (ma_sound*)pNode;
    ma_uint32 frameCount = *pFrameCountOut;
    ma_uint32 totalFramesRead = 0;
    ma_format dataSourceFormat;
    ma_uint32 dataSourceChannels;
    ma_uint8 temp[MA_DATA_CONVERTER_STACK_BUFFER_SIZE];
    ma_uint32 tempCapInFrames;
    ma_uint64 seekTarget;

    /* This is a data source node which means no input buses. */
    (void)ppFramesIn;
    (void)pFrameCountIn;

    /* If we're marked at the end we need to stop the sound and do nothing. */
    if (ma_sound_at_end(pSound)) {
        ma_sound_stop(pSound);
        *pFrameCountOut = 0;
        return;
    }

    /* If we're seeking, do so now before reading. */
    seekTarget = ma_atomic_load_64(&pSound->seekTarget);
    if (seekTarget != MA_SEEK_TARGET_NONE) {
        ma_data_source_seek_to_pcm_frame(pSound->pDataSource, seekTarget);

        /* Any time-dependant effects need to have their times updated. */
        ma_node_set_time(pSound, seekTarget);

        ma_atomic_exchange_64(&pSound->seekTarget, MA_SEEK_TARGET_NONE);
    }

    /*
    We want to update the pitch once. For sounds, this can be either at the start or at the end. If
    we don't force this to only ever be updating once, we could end up in a situation where
    retrieving the required input frame count ends up being different to what we actually retrieve.
    What could happen is that the required input frame count is calculated, the pitch is update,
    and then this processing function is called resulting in a different number of input frames
    being processed. Do not call this in ma_engine_node_process_pcm_frames__general() or else
    you'll hit the aforementioned bug.
    */
    ma_engine_node_update_pitch_if_required(&pSound->engineNode);

    /*
    For the convenience of the caller, we're doing to allow data sources to use non-floating-point formats and channel counts that differ
    from the main engine.
    */
    result = ma_data_source_get_data_format(pSound->pDataSource, &dataSourceFormat, &dataSourceChannels, NULL, NULL, 0);
    if (result == MA_SUCCESS) {
        tempCapInFrames = sizeof(temp) / ma_get_bytes_per_frame(dataSourceFormat, dataSourceChannels);

        /* Keep reading until we've read as much as was requested or we reach the end of the data source. */
        while (totalFramesRead < frameCount) {
            ma_uint32 framesRemaining = frameCount - totalFramesRead;
            ma_uint32 framesToRead;
            ma_uint64 framesJustRead;
            ma_uint32 frameCountIn;
            ma_uint32 frameCountOut;
            const float* pRunningFramesIn;
            float* pRunningFramesOut;

            /*
            The first thing we need to do is read into the temporary buffer. We can calculate exactly
            how many input frames we'll need after resampling.
            */
            framesToRead = (ma_uint32)ma_engine_node_get_required_input_frame_count(&pSound->engineNode, framesRemaining);
            if (framesToRead > tempCapInFrames) {
                framesToRead = tempCapInFrames;
            }

            result = ma_data_source_read_pcm_frames(pSound->pDataSource, temp, framesToRead, &framesJustRead);

            /* If we reached the end of the sound we'll want to mark it as at the end and stop it. This should never be returned for looping sounds. */
            if (result == MA_AT_END) {
                ma_sound_set_at_end(pSound, MA_TRUE);   /* This will be set to false in ma_sound_start(). */
            }

            pRunningFramesOut = ma_offset_pcm_frames_ptr_f32(ppFramesOut[0], totalFramesRead, ma_node_get_output_channels(pNode, 0));

            frameCountIn = (ma_uint32)framesJustRead;
            frameCountOut = framesRemaining;

            /* Convert if necessary. */
            if (dataSourceFormat == ma_format_f32) {
                /* Fast path. No data conversion necessary. */
                pRunningFramesIn = (float*)temp;
                ma_engine_node_process_pcm_frames__general(&pSound->engineNode, &pRunningFramesIn, &frameCountIn, &pRunningFramesOut, &frameCountOut);
            } else {
                /* Slow path. Need to do sample format conversion to f32. If we give the f32 buffer the same count as the first temp buffer, we're guaranteed it'll be large enough. */
                float tempf32[MA_DATA_CONVERTER_STACK_BUFFER_SIZE]; /* Do not do `MA_DATA_CONVERTER_STACK_BUFFER_SIZE/sizeof(float)` here like we've done in other places. */
                ma_convert_pcm_frames_format(tempf32, ma_format_f32, temp, dataSourceFormat, framesJustRead, dataSourceChannels, ma_dither_mode_none);

                /* Now that we have our samples in f32 format we can process like normal. */
                pRunningFramesIn = tempf32;
                ma_engine_node_process_pcm_frames__general(&pSound->engineNode, &pRunningFramesIn, &frameCountIn, &pRunningFramesOut, &frameCountOut);
            }

            /* We should have processed all of our input frames since we calculated the required number of input frames at the top. */
            MA_ASSERT(frameCountIn == framesJustRead);
            totalFramesRead += (ma_uint32)frameCountOut;   /* Safe cast. */

            if (result != MA_SUCCESS || ma_sound_at_end(pSound)) {
                break;  /* Might have reached the end. */
            }
        }
    }

    *pFrameCountOut = totalFramesRead;
}

static void ma_engine_node_process_pcm_frames__group(ma_node* pNode, const float** ppFramesIn, ma_uint32* pFrameCountIn, float** ppFramesOut, ma_uint32* pFrameCountOut)
{
    /*
    Make sure the pitch is updated before trying to read anything. It's important that this is done
    only once and not in ma_engine_node_process_pcm_frames__general(). The reason for this is that
    ma_engine_node_process_pcm_frames__general() will call ma_engine_node_get_required_input_frame_count(),
    and if another thread modifies the pitch just after that call it can result in a glitch due to
    the input rate changing.
    */
    ma_engine_node_update_pitch_if_required((ma_engine_node*)pNode);

    /* For groups, the input data has already been read and we just need to apply the effect. */
    ma_engine_node_process_pcm_frames__general((ma_engine_node*)pNode, ppFramesIn, pFrameCountIn, ppFramesOut, pFrameCountOut);
}

static ma_result ma_engine_node_get_required_input_frame_count__group(ma_node* pNode, ma_uint32 outputFrameCount, ma_uint32* pInputFrameCount)
{
    ma_uint64 inputFrameCount;

    MA_ASSERT(pInputFrameCount != NULL);

    /* Our pitch will affect this calculation. We need to update it. */
    ma_engine_node_update_pitch_if_required((ma_engine_node*)pNode);

    inputFrameCount = ma_engine_node_get_required_input_frame_count((ma_engine_node*)pNode, outputFrameCount);
    if (inputFrameCount > 0xFFFFFFFF) {
        inputFrameCount = 0xFFFFFFFF;    /* Will never happen because miniaudio will only ever process in relatively small chunks. */
    }

    *pInputFrameCount = (ma_uint32)inputFrameCount;

    return MA_SUCCESS;
}


static ma_node_vtable g_ma_engine_node_vtable__sound =
{
    ma_engine_node_process_pcm_frames__sound,
    NULL,   /* onGetRequiredInputFrameCount */
    0,      /* Sounds are data source nodes which means they have zero inputs (their input is drawn from the data source itself). */
    1,      /* Sounds have one output bus. */
    0       /* Default flags. */
};

static ma_node_vtable g_ma_engine_node_vtable__group =
{
    ma_engine_node_process_pcm_frames__group,
    ma_engine_node_get_required_input_frame_count__group,
    1,      /* Groups have one input bus. */
    1,      /* Groups have one output bus. */
    MA_NODE_FLAG_DIFFERENT_PROCESSING_RATES /* The engine node does resampling so should let miniaudio know about it. */
};



static ma_node_config ma_engine_node_base_node_config_init(const ma_engine_node_config* pConfig)
{
    ma_node_config baseNodeConfig;

    if (pConfig->type == ma_engine_node_type_sound) {
        /* Sound. */
        baseNodeConfig = ma_node_config_init();
        baseNodeConfig.vtable       = &g_ma_engine_node_vtable__sound;
        baseNodeConfig.initialState = ma_node_state_stopped;    /* Sounds are stopped by default. */
    } else {
        /* Group. */
        baseNodeConfig = ma_node_config_init();
        baseNodeConfig.vtable       = &g_ma_engine_node_vtable__group;
        baseNodeConfig.initialState = ma_node_state_started;    /* Groups are started by default. */
    }

    return baseNodeConfig;
}

static ma_spatializer_config ma_engine_node_spatializer_config_init(const ma_node_config* pBaseNodeConfig)
{
    return ma_spatializer_config_init(pBaseNodeConfig->pInputChannels[0], pBaseNodeConfig->pOutputChannels[0]);
}

typedef struct
{
    size_t sizeInBytes;
    size_t baseNodeOffset;
    size_t resamplerOffset;
    size_t spatializerOffset;
    size_t gainerOffset;
} ma_engine_node_heap_layout;

static ma_result ma_engine_node_get_heap_layout(const ma_engine_node_config* pConfig, ma_engine_node_heap_layout* pHeapLayout)
{
    ma_result result;
    size_t tempHeapSize;
    ma_node_config baseNodeConfig;
    ma_linear_resampler_config resamplerConfig;
    ma_spatializer_config spatializerConfig;
    ma_gainer_config gainerConfig;
    ma_uint32 channelsIn;
    ma_uint32 channelsOut;
    ma_channel defaultStereoChannelMap[2] = {MA_CHANNEL_SIDE_LEFT, MA_CHANNEL_SIDE_RIGHT};  /* <-- Consistent with the default channel map of a stereo listener. Means channel conversion can run on a fast path. */

    MA_ASSERT(pHeapLayout);

    MA_ZERO_OBJECT(pHeapLayout);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    if (pConfig->pEngine == NULL) {
        return MA_INVALID_ARGS; /* An engine must be specified. */
    }

    pHeapLayout->sizeInBytes = 0;

    channelsIn  = (pConfig->channelsIn  != 0) ? pConfig->channelsIn  : ma_engine_get_channels(pConfig->pEngine);
    channelsOut = (pConfig->channelsOut != 0) ? pConfig->channelsOut : ma_engine_get_channels(pConfig->pEngine);


    /* Base node. */
    baseNodeConfig = ma_engine_node_base_node_config_init(pConfig);
    baseNodeConfig.pInputChannels  = &channelsIn;
    baseNodeConfig.pOutputChannels = &channelsOut;

    result = ma_node_get_heap_size(ma_engine_get_node_graph(pConfig->pEngine), &baseNodeConfig, &tempHeapSize);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to retrieve the size of the heap for the base node. */
    }

    pHeapLayout->baseNodeOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(tempHeapSize);


    /* Resmapler. */
    resamplerConfig = ma_linear_resampler_config_init(ma_format_f32, channelsIn, 1, 1); /* Input and output sample rates don't affect the calculation of the heap size. */
    resamplerConfig.lpfOrder = 0;

    result = ma_linear_resampler_get_heap_size(&resamplerConfig, &tempHeapSize);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to retrieve the size of the heap for the resampler. */
    }

    pHeapLayout->resamplerOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(tempHeapSize);


    /* Spatializer. */
    spatializerConfig = ma_engine_node_spatializer_config_init(&baseNodeConfig);

    if (spatializerConfig.channelsIn == 2) {
        spatializerConfig.pChannelMapIn = defaultStereoChannelMap;
    }

    result = ma_spatializer_get_heap_size(&spatializerConfig, &tempHeapSize);
    if (result != MA_SUCCESS) {
        return result;  /* Failed to retrieve the size of the heap for the spatializer. */
    }

    pHeapLayout->spatializerOffset = pHeapLayout->sizeInBytes;
    pHeapLayout->sizeInBytes += ma_align_64(tempHeapSize);


    /* Gainer. Will not be used if we are not using smoothing. */
    if (pConfig->volumeSmoothTimeInPCMFrames > 0) {
        gainerConfig = ma_gainer_config_init(channelsIn, pConfig->volumeSmoothTimeInPCMFrames);

        result = ma_gainer_get_heap_size(&gainerConfig, &tempHeapSize);
        if (result != MA_SUCCESS) {
            return result;
        }

        pHeapLayout->gainerOffset = pHeapLayout->sizeInBytes;
        pHeapLayout->sizeInBytes += ma_align_64(tempHeapSize);
    }


    return MA_SUCCESS;
}

MA_API ma_result ma_engine_node_get_heap_size(const ma_engine_node_config* pConfig, size_t* pHeapSizeInBytes)
{
    ma_result result;
    ma_engine_node_heap_layout heapLayout;

    if (pHeapSizeInBytes == NULL) {
        return MA_INVALID_ARGS;
    }

    *pHeapSizeInBytes = 0;

    result = ma_engine_node_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    *pHeapSizeInBytes = heapLayout.sizeInBytes;

    return MA_SUCCESS;
}

MA_API ma_result ma_engine_node_init_preallocated(const ma_engine_node_config* pConfig, void* pHeap, ma_engine_node* pEngineNode)
{
    ma_result result;
    ma_engine_node_heap_layout heapLayout;
    ma_node_config baseNodeConfig;
    ma_linear_resampler_config resamplerConfig;
    ma_fader_config faderConfig;
    ma_spatializer_config spatializerConfig;
    ma_panner_config pannerConfig;
    ma_gainer_config gainerConfig;
    ma_uint32 channelsIn;
    ma_uint32 channelsOut;
    ma_channel defaultStereoChannelMap[2] = {MA_CHANNEL_SIDE_LEFT, MA_CHANNEL_SIDE_RIGHT};  /* <-- Consistent with the default channel map of a stereo listener. Means channel conversion can run on a fast path. */

    if (pEngineNode == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pEngineNode);

    result = ma_engine_node_get_heap_layout(pConfig, &heapLayout);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pConfig->pinnedListenerIndex != MA_LISTENER_INDEX_CLOSEST && pConfig->pinnedListenerIndex >= ma_engine_get_listener_count(pConfig->pEngine)) {
        return MA_INVALID_ARGS; /* Invalid listener. */
    }

    pEngineNode->_pHeap = pHeap;
    MA_ZERO_MEMORY(pHeap, heapLayout.sizeInBytes);

    pEngineNode->pEngine                     = pConfig->pEngine;
    pEngineNode->sampleRate                  = (pConfig->sampleRate > 0) ? pConfig->sampleRate : ma_engine_get_sample_rate(pEngineNode->pEngine);
    pEngineNode->volumeSmoothTimeInPCMFrames = pConfig->volumeSmoothTimeInPCMFrames;
    pEngineNode->monoExpansionMode           = pConfig->monoExpansionMode;
    ma_atomic_float_set(&pEngineNode->volume, 1);
    pEngineNode->pitch                       = 1;
    pEngineNode->oldPitch                    = 1;
    pEngineNode->oldDopplerPitch             = 1;
    pEngineNode->isPitchDisabled             = pConfig->isPitchDisabled;
    pEngineNode->isSpatializationDisabled    = pConfig->isSpatializationDisabled;
    pEngineNode->pinnedListenerIndex         = pConfig->pinnedListenerIndex;
    ma_atomic_float_set(&pEngineNode->fadeSettings.volumeBeg, 1);
    ma_atomic_float_set(&pEngineNode->fadeSettings.volumeEnd, 1);
    ma_atomic_uint64_set(&pEngineNode->fadeSettings.fadeLengthInFrames, (~(ma_uint64)0));
    ma_atomic_uint64_set(&pEngineNode->fadeSettings.absoluteGlobalTimeInFrames, (~(ma_uint64)0));   /* <-- Indicates that the fade should start immediately. */

    channelsIn  = (pConfig->channelsIn  != 0) ? pConfig->channelsIn  : ma_engine_get_channels(pConfig->pEngine);
    channelsOut = (pConfig->channelsOut != 0) ? pConfig->channelsOut : ma_engine_get_channels(pConfig->pEngine);

    /*
    If the sample rate of the sound is different to the engine, make sure pitching is enabled so that the resampler
    is activated. Not doing this will result in the sound not being resampled if MA_SOUND_FLAG_NO_PITCH is used.
    */
    if (pEngineNode->sampleRate != ma_engine_get_sample_rate(pEngineNode->pEngine)) {
        pEngineNode->isPitchDisabled = MA_FALSE;
    }


    /* Base node. */
    baseNodeConfig = ma_engine_node_base_node_config_init(pConfig);
    baseNodeConfig.pInputChannels  = &channelsIn;
    baseNodeConfig.pOutputChannels = &channelsOut;

    result = ma_node_init_preallocated(&pConfig->pEngine->nodeGraph, &baseNodeConfig, ma_offset_ptr(pHeap, heapLayout.baseNodeOffset), &pEngineNode->baseNode);
    if (result != MA_SUCCESS) {
        goto error0;
    }


    /*
    We can now initialize the effects we need in order to implement the engine node. There's a
    defined order of operations here, mainly centered around when we convert our channels from the
    data source's native channel count to the engine's channel count. As a rule, we want to do as
    much computation as possible before spatialization because there's a chance that will increase
    the channel count, thereby increasing the amount of work needing to be done to process.
    */

    /* We'll always do resampling first. */
    resamplerConfig = ma_linear_resampler_config_init(ma_format_f32, baseNodeConfig.pInputChannels[0], pEngineNode->sampleRate, ma_engine_get_sample_rate(pEngineNode->pEngine));
    resamplerConfig.lpfOrder = 0;    /* <-- Need to disable low-pass filtering for pitch shifting for now because there's cases where the biquads are becoming unstable. Need to figure out a better fix for this. */

    result = ma_linear_resampler_init_preallocated(&resamplerConfig, ma_offset_ptr(pHeap, heapLayout.resamplerOffset), &pEngineNode->resampler);
    if (result != MA_SUCCESS) {
        goto error1;
    }


    /* After resampling will come the fader. */
    faderConfig = ma_fader_config_init(ma_format_f32, baseNodeConfig.pInputChannels[0], ma_engine_get_sample_rate(pEngineNode->pEngine));

    result = ma_fader_init(&faderConfig, &pEngineNode->fader);
    if (result != MA_SUCCESS) {
        goto error2;
    }


    /*
    Spatialization comes next. We spatialize based on the node's output channel count. It's up the caller to
    ensure channels counts link up correctly in the node graph.
    */
    spatializerConfig = ma_engine_node_spatializer_config_init(&baseNodeConfig);
    spatializerConfig.gainSmoothTimeInFrames = pEngineNode->pEngine->gainSmoothTimeInFrames;

    if (spatializerConfig.channelsIn == 2) {
        spatializerConfig.pChannelMapIn = defaultStereoChannelMap;
    }

    result = ma_spatializer_init_preallocated(&spatializerConfig, ma_offset_ptr(pHeap, heapLayout.spatializerOffset), &pEngineNode->spatializer);
    if (result != MA_SUCCESS) {
        goto error2;
    }


    /*
    After spatialization comes panning. We need to do this after spatialization because otherwise we wouldn't
    be able to pan mono sounds.
    */
    pannerConfig = ma_panner_config_init(ma_format_f32, baseNodeConfig.pOutputChannels[0]);

    result = ma_panner_init(&pannerConfig, &pEngineNode->panner);
    if (result != MA_SUCCESS) {
        goto error3;
    }


    /* We'll need a gainer for smoothing out volume changes if we have a non-zero smooth time. We apply this before converting to the output channel count. */
    if (pConfig->volumeSmoothTimeInPCMFrames > 0) {
        gainerConfig = ma_gainer_config_init(channelsIn, pConfig->volumeSmoothTimeInPCMFrames);

        result = ma_gainer_init_preallocated(&gainerConfig, ma_offset_ptr(pHeap, heapLayout.gainerOffset), &pEngineNode->volumeGainer);
        if (result != MA_SUCCESS) {
            goto error3;
        }
    }


    return MA_SUCCESS;

    /* No need for allocation callbacks here because we use a preallocated heap. */
error3: ma_spatializer_uninit(&pEngineNode->spatializer, NULL);
error2: ma_linear_resampler_uninit(&pEngineNode->resampler, NULL);
error1: ma_node_uninit(&pEngineNode->baseNode, NULL);
error0: return result;
}

MA_API ma_result ma_engine_node_init(const ma_engine_node_config* pConfig, const ma_allocation_callbacks* pAllocationCallbacks, ma_engine_node* pEngineNode)
{
    ma_result result;
    size_t heapSizeInBytes;
    void* pHeap;

    result = ma_engine_node_get_heap_size(pConfig, &heapSizeInBytes);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (heapSizeInBytes > 0) {
        pHeap = ma_malloc(heapSizeInBytes, pAllocationCallbacks);
        if (pHeap == NULL) {
            return MA_OUT_OF_MEMORY;
        }
    } else {
        pHeap = NULL;
    }

    result = ma_engine_node_init_preallocated(pConfig, pHeap, pEngineNode);
    if (result != MA_SUCCESS) {
        ma_free(pHeap, pAllocationCallbacks);
        return result;
    }

    pEngineNode->_ownsHeap = MA_TRUE;
    return MA_SUCCESS;
}

MA_API void ma_engine_node_uninit(ma_engine_node* pEngineNode, const ma_allocation_callbacks* pAllocationCallbacks)
{
    /*
    The base node always needs to be uninitialized first to ensure it's detached from the graph completely before we
    destroy anything that might be in the middle of being used by the processing function.
    */
    ma_node_uninit(&pEngineNode->baseNode, pAllocationCallbacks);

    /* Now that the node has been uninitialized we can safely uninitialize the rest. */
    if (pEngineNode->volumeSmoothTimeInPCMFrames > 0) {
        ma_gainer_uninit(&pEngineNode->volumeGainer, pAllocationCallbacks);
    }

    ma_spatializer_uninit(&pEngineNode->spatializer, pAllocationCallbacks);
    ma_linear_resampler_uninit(&pEngineNode->resampler, pAllocationCallbacks);

    /* Free the heap last. */
    if (pEngineNode->_ownsHeap) {
        ma_free(pEngineNode->_pHeap, pAllocationCallbacks);
    }
}


MA_API ma_sound_config ma_sound_config_init(void)
{
    return ma_sound_config_init_2(NULL);
}

MA_API ma_sound_config ma_sound_config_init_2(ma_engine* pEngine)
{
    ma_sound_config config;

    MA_ZERO_OBJECT(&config);

    if (pEngine != NULL) {
        config.monoExpansionMode = pEngine->monoExpansionMode;
    } else {
        config.monoExpansionMode = ma_mono_expansion_mode_default;
    }

    config.rangeEndInPCMFrames     = ~((ma_uint64)0);
    config.loopPointEndInPCMFrames = ~((ma_uint64)0);

    return config;
}

MA_API ma_sound_group_config ma_sound_group_config_init(void)
{
    return ma_sound_group_config_init_2(NULL);
}

MA_API ma_sound_group_config ma_sound_group_config_init_2(ma_engine* pEngine)
{
    ma_sound_group_config config;

    MA_ZERO_OBJECT(&config);

    if (pEngine != NULL) {
        config.monoExpansionMode = pEngine->monoExpansionMode;
    } else {
        config.monoExpansionMode = ma_mono_expansion_mode_default;
    }

    return config;
}


MA_API ma_engine_config ma_engine_config_init(void)
{
    ma_engine_config config;

    MA_ZERO_OBJECT(&config);
    config.listenerCount     = 1;   /* Always want at least one listener. */
    config.monoExpansionMode = ma_mono_expansion_mode_default;

    return config;
}


#if !defined(MA_NO_DEVICE_IO)
static void ma_engine_data_callback_internal(ma_device* pDevice, void* pFramesOut, const void* pFramesIn, ma_uint32 frameCount)
{
    ma_engine* pEngine = (ma_engine*)pDevice->pUserData;

    (void)pFramesIn;

    /*
    Experiment: Try processing a resource manager job if we're on the Emscripten build.

    This serves two purposes:

        1) It ensures jobs are actually processed at some point since we cannot guarantee that the
           caller is doing the right thing and calling ma_resource_manager_process_next_job(); and

        2) It's an attempt at working around an issue where processing jobs on the Emscripten main
           loop doesn't work as well as it should. When trying to load sounds without the `DECODE`
           flag or with the `ASYNC` flag, the sound data is just not able to be loaded in time
           before the callback is processed. I think it's got something to do with the single-
           threaded nature of Web, but I'm not entirely sure.
    */
    #if !defined(MA_NO_RESOURCE_MANAGER) && defined(MA_EMSCRIPTEN)
    {
        if (pEngine->pResourceManager != NULL) {
            if ((pEngine->pResourceManager->config.flags & MA_RESOURCE_MANAGER_FLAG_NO_THREADING) != 0) {
                ma_resource_manager_process_next_job(pEngine->pResourceManager);
            }
        }
    }
    #endif

    ma_engine_read_pcm_frames(pEngine, pFramesOut, frameCount, NULL);
}

static ma_uint32 ma_device__get_processing_size_in_frames(ma_device* pDevice)
{
    /*
    The processing size is the period size. The device can have a fixed sized processing size, or
    it can be decided by the backend in which case it can be variable.
    */
    if (pDevice->playback.intermediaryBufferCap > 0) {
        /* Using a fixed sized processing callback. */
        return pDevice->playback.intermediaryBufferCap;
    } else {
        /* Not using a fixed sized processing callback. Need to estimate the processing size based on the backend. */
        return pDevice->playback.internalPeriodSizeInFrames;
    }
}
#endif

MA_API ma_result ma_engine_init(const ma_engine_config* pConfig, ma_engine* pEngine)
{
    ma_result result;
    ma_node_graph_config nodeGraphConfig;
    ma_engine_config engineConfig;
    ma_spatializer_listener_config listenerConfig;
    ma_uint32 iListener;

    if (pEngine == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pEngine);

    /* The config is allowed to be NULL in which case we use defaults for everything. */
    if (pConfig != NULL) {
        engineConfig = *pConfig;
    } else {
        engineConfig = ma_engine_config_init();
    }

    pEngine->monoExpansionMode = engineConfig.monoExpansionMode;
    pEngine->defaultVolumeSmoothTimeInPCMFrames = engineConfig.defaultVolumeSmoothTimeInPCMFrames;
    pEngine->onProcess = engineConfig.onProcess;
    pEngine->pProcessUserData = engineConfig.pProcessUserData;
    ma_allocation_callbacks_init_copy(&pEngine->allocationCallbacks, &engineConfig.allocationCallbacks);

    #if !defined(MA_NO_RESOURCE_MANAGER)
    {
        pEngine->pResourceManager = engineConfig.pResourceManager;
    }
    #endif

    #if !defined(MA_NO_DEVICE_IO)
    {
        pEngine->pDevice = engineConfig.pDevice;

        /* If we don't have a device, we need one. */
        if (pEngine->pDevice == NULL && engineConfig.noDevice == MA_FALSE) {
            ma_device_config deviceConfig;

            pEngine->pDevice = (ma_device*)ma_malloc(sizeof(*pEngine->pDevice), &pEngine->allocationCallbacks);
            if (pEngine->pDevice == NULL) {
                return MA_OUT_OF_MEMORY;
            }

            deviceConfig = ma_device_config_init(ma_device_type_playback);
            deviceConfig.playback.pDeviceID        = engineConfig.pPlaybackDeviceID;
            deviceConfig.playback.format           = ma_format_f32;
            deviceConfig.playback.channels         = engineConfig.channels;
            deviceConfig.sampleRate                = engineConfig.sampleRate;
            deviceConfig.dataCallback              = (engineConfig.dataCallback != NULL) ? engineConfig.dataCallback : ma_engine_data_callback_internal;
            deviceConfig.pUserData                 = pEngine;
            deviceConfig.notificationCallback      = engineConfig.notificationCallback;
            deviceConfig.periodSizeInFrames        = engineConfig.periodSizeInFrames;
            deviceConfig.periodSizeInMilliseconds  = engineConfig.periodSizeInMilliseconds;
            deviceConfig.noPreSilencedOutputBuffer = MA_TRUE;    /* We'll always be outputting to every frame in the callback so there's no need for a pre-silenced buffer. */
            deviceConfig.noClip                    = MA_TRUE;    /* The engine will do clipping itself. */

            if (engineConfig.pContext == NULL) {
                ma_context_config contextConfig = ma_context_config_init();
                contextConfig.allocationCallbacks = pEngine->allocationCallbacks;
                contextConfig.pLog = engineConfig.pLog;

                /* If the engine config does not specify a log, use the resource manager's if we have one. */
                #ifndef MA_NO_RESOURCE_MANAGER
                {
                    if (contextConfig.pLog == NULL && engineConfig.pResourceManager != NULL) {
                        contextConfig.pLog = ma_resource_manager_get_log(engineConfig.pResourceManager);
                    }
                }
                #endif

                result = ma_device_init_ex(NULL, 0, &contextConfig, &deviceConfig, pEngine->pDevice);
            } else {
                result = ma_device_init(engineConfig.pContext, &deviceConfig, pEngine->pDevice);
            }

            if (result != MA_SUCCESS) {
                ma_free(pEngine->pDevice, &pEngine->allocationCallbacks);
                pEngine->pDevice = NULL;
                return result;
            }

            pEngine->ownsDevice = MA_TRUE;
        }

        /* Update the channel count and sample rate of the engine config so we can reference it below. */
        if (pEngine->pDevice != NULL) {
            engineConfig.channels   = pEngine->pDevice->playback.channels;
            engineConfig.sampleRate = pEngine->pDevice->sampleRate;

            /*
            The processing size used by the engine is determined by engineConfig.periodSizeInFrames. We want
            to make this equal to what the device is using for it's period size. If we don't do that, it's
            possible that the node graph will split it's processing into multiple passes which can introduce
            glitching.
            */
            engineConfig.periodSizeInFrames = ma_device__get_processing_size_in_frames(pEngine->pDevice);
        }
    }
    #endif

    if (engineConfig.channels == 0 || engineConfig.sampleRate == 0) {
        return MA_INVALID_ARGS;
    }

    pEngine->sampleRate = engineConfig.sampleRate;

    /* The engine always uses either the log that was passed into the config, or the context's log is available. */
    if (engineConfig.pLog != NULL) {
        pEngine->pLog = engineConfig.pLog;
    } else {
        #if !defined(MA_NO_DEVICE_IO)
        {
            pEngine->pLog = ma_device_get_log(pEngine->pDevice);
        }
        #else
        {
            pEngine->pLog = NULL;
        }
        #endif
    }


    /* The engine is a node graph. This needs to be initialized after we have the device so we can determine the channel count. */
    nodeGraphConfig = ma_node_graph_config_init(engineConfig.channels);
    nodeGraphConfig.processingSizeInFrames = engineConfig.periodSizeInFrames;
    nodeGraphConfig.preMixStackSizeInBytes = engineConfig.preMixStackSizeInBytes;

    result = ma_node_graph_init(&nodeGraphConfig, &pEngine->allocationCallbacks, &pEngine->nodeGraph);
    if (result != MA_SUCCESS) {
        goto on_error_1;
    }


    /* We need at least one listener. */
    if (engineConfig.listenerCount == 0) {
        engineConfig.listenerCount = 1;
    }

    if (engineConfig.listenerCount > MA_ENGINE_MAX_LISTENERS) {
        result = MA_INVALID_ARGS;   /* Too many listeners. */
        goto on_error_1;
    }

    for (iListener = 0; iListener < engineConfig.listenerCount; iListener += 1) {
        listenerConfig = ma_spatializer_listener_config_init(ma_node_graph_get_channels(&pEngine->nodeGraph));

        /*
        If we're using a device, use the device's channel map for the listener. Otherwise just use
        miniaudio's default channel map.
        */
        #if !defined(MA_NO_DEVICE_IO)
        {
            if (pEngine->pDevice != NULL) {
                /*
                Temporarily disabled. There is a subtle bug here where front-left and front-right
                will be used by the device's channel map, but this is not what we want to use for
                spatialization. Instead we want to use side-left and side-right. I need to figure
                out a better solution for this. For now, disabling the use of device channel maps.
                */
                /*listenerConfig.pChannelMapOut = pEngine->pDevice->playback.channelMap;*/
            }
        }
        #endif

        result = ma_spatializer_listener_init(&listenerConfig, &pEngine->allocationCallbacks, &pEngine->listeners[iListener]);  /* TODO: Change this to a pre-allocated heap. */
        if (result != MA_SUCCESS) {
            goto on_error_2;
        }

        pEngine->listenerCount += 1;
    }


    /* Gain smoothing for spatialized sounds. */
    pEngine->gainSmoothTimeInFrames = engineConfig.gainSmoothTimeInFrames;
    if (pEngine->gainSmoothTimeInFrames == 0) {
        ma_uint32 gainSmoothTimeInMilliseconds = engineConfig.gainSmoothTimeInMilliseconds;
        if (gainSmoothTimeInMilliseconds == 0) {
            gainSmoothTimeInMilliseconds = 8;
        }

        pEngine->gainSmoothTimeInFrames = (gainSmoothTimeInMilliseconds * ma_engine_get_sample_rate(pEngine)) / 1000;  /* 8ms by default. */
    }


    /* We need a resource manager. */
    #ifndef MA_NO_RESOURCE_MANAGER
    {
        if (pEngine->pResourceManager == NULL) {
            ma_resource_manager_config resourceManagerConfig;

            pEngine->pResourceManager = (ma_resource_manager*)ma_malloc(sizeof(*pEngine->pResourceManager), &pEngine->allocationCallbacks);
            if (pEngine->pResourceManager == NULL) {
                result = MA_OUT_OF_MEMORY;
                goto on_error_2;
            }

            resourceManagerConfig = ma_resource_manager_config_init();
            resourceManagerConfig.pLog              = pEngine->pLog;    /* Always use the engine's log for internally-managed resource managers. */
            resourceManagerConfig.decodedFormat     = ma_format_f32;
            resourceManagerConfig.decodedChannels   = 0;  /* Leave the decoded channel count as 0 so we can get good spatialization. */
            resourceManagerConfig.decodedSampleRate = ma_engine_get_sample_rate(pEngine);
            ma_allocation_callbacks_init_copy(&resourceManagerConfig.allocationCallbacks, &pEngine->allocationCallbacks);
            resourceManagerConfig.pVFS              = engineConfig.pResourceManagerVFS;

            /* The Emscripten build cannot use threads unless it's targeting pthreads. */
            #if defined(MA_EMSCRIPTEN) && !defined(__EMSCRIPTEN_PTHREADS__)
            {
                resourceManagerConfig.jobThreadCount = 0;
                resourceManagerConfig.flags |= MA_RESOURCE_MANAGER_FLAG_NO_THREADING;
            }
            #endif

            result = ma_resource_manager_init(&resourceManagerConfig, pEngine->pResourceManager);
            if (result != MA_SUCCESS) {
                goto on_error_3;
            }

            pEngine->ownsResourceManager = MA_TRUE;
        }
    }
    #endif

    /* Setup some stuff for inlined sounds. That is sounds played with ma_engine_play_sound(). */
    pEngine->inlinedSoundLock  = 0;
    pEngine->pInlinedSoundHead = NULL;

    /* Start the engine if required. This should always be the last step. */
    #if !defined(MA_NO_DEVICE_IO)
    {
        if (engineConfig.noAutoStart == MA_FALSE && pEngine->pDevice != NULL) {
            result = ma_engine_start(pEngine);
            if (result != MA_SUCCESS) {
                goto on_error_4;    /* Failed to start the engine. */
            }
        }
    }
    #endif

    return MA_SUCCESS;

#if !defined(MA_NO_DEVICE_IO)
on_error_4:
#endif
#if !defined(MA_NO_RESOURCE_MANAGER)
on_error_3:
    if (pEngine->ownsResourceManager) {
        ma_free(pEngine->pResourceManager, &pEngine->allocationCallbacks);
    }
#endif  /* MA_NO_RESOURCE_MANAGER */
on_error_2:
    for (iListener = 0; iListener < pEngine->listenerCount; iListener += 1) {
        ma_spatializer_listener_uninit(&pEngine->listeners[iListener], &pEngine->allocationCallbacks);
    }

    ma_node_graph_uninit(&pEngine->nodeGraph, &pEngine->allocationCallbacks);
on_error_1:
    #if !defined(MA_NO_DEVICE_IO)
    {
        if (pEngine->ownsDevice) {
            ma_device_uninit(pEngine->pDevice);
            ma_free(pEngine->pDevice, &pEngine->allocationCallbacks);
        }
    }
    #endif

    return result;
}

MA_API void ma_engine_uninit(ma_engine* pEngine)
{
    ma_uint32 iListener;

    if (pEngine == NULL) {
        return;
    }

    /* The device must be uninitialized before the node graph to ensure the audio thread doesn't try accessing it. */
    #if !defined(MA_NO_DEVICE_IO)
    {
        if (pEngine->ownsDevice) {
            ma_device_uninit(pEngine->pDevice);
            ma_free(pEngine->pDevice, &pEngine->allocationCallbacks);
        } else {
            if (pEngine->pDevice != NULL) {
                ma_device_stop(pEngine->pDevice);
            }
        }
    }
    #endif

    /*
    All inlined sounds need to be deleted. I'm going to use a lock here just to future proof in case
    I want to do some kind of garbage collection later on.
    */
    ma_spinlock_lock(&pEngine->inlinedSoundLock);
    {
        for (;;) {
            ma_sound_inlined* pSoundToDelete = pEngine->pInlinedSoundHead;
            if (pSoundToDelete == NULL) {
                break;  /* Done. */
            }

            pEngine->pInlinedSoundHead = pSoundToDelete->pNext;

            ma_sound_uninit(&pSoundToDelete->sound);
            ma_free(pSoundToDelete, &pEngine->allocationCallbacks);
        }
    }
    ma_spinlock_unlock(&pEngine->inlinedSoundLock);

    for (iListener = 0; iListener < pEngine->listenerCount; iListener += 1) {
        ma_spatializer_listener_uninit(&pEngine->listeners[iListener], &pEngine->allocationCallbacks);
    }

    /* Make sure the node graph is uninitialized after the audio thread has been shutdown to prevent accessing of the node graph after being uninitialized. */
    ma_node_graph_uninit(&pEngine->nodeGraph, &pEngine->allocationCallbacks);

    /* Uninitialize the resource manager last to ensure we don't have a thread still trying to access it. */
#ifndef MA_NO_RESOURCE_MANAGER
    if (pEngine->ownsResourceManager) {
        ma_resource_manager_uninit(pEngine->pResourceManager);
        ma_free(pEngine->pResourceManager, &pEngine->allocationCallbacks);
    }
#endif
}

MA_API ma_result ma_engine_read_pcm_frames(ma_engine* pEngine, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
{
    ma_result result;
    ma_uint64 framesRead = 0;

    if (pFramesRead != NULL) {
        *pFramesRead = 0;
    }

    result = ma_node_graph_read_pcm_frames(&pEngine->nodeGraph, pFramesOut, frameCount, &framesRead);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pFramesRead != NULL) {
        *pFramesRead = framesRead;
    }

    if (pEngine->onProcess) {
        pEngine->onProcess(pEngine->pProcessUserData, (float*)pFramesOut, framesRead);  /* Safe cast to float* because the engine always works on floating point samples. */
    }

    return MA_SUCCESS;
}

MA_API ma_node_graph* ma_engine_get_node_graph(ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return NULL;
    }

    return &pEngine->nodeGraph;
}

#if !defined(MA_NO_RESOURCE_MANAGER)
MA_API ma_resource_manager* ma_engine_get_resource_manager(ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return NULL;
    }

    #if !defined(MA_NO_RESOURCE_MANAGER)
    {
        return pEngine->pResourceManager;
    }
    #else
    {
        return NULL;
    }
    #endif
}
#endif

MA_API ma_device* ma_engine_get_device(ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return NULL;
    }

    #if !defined(MA_NO_DEVICE_IO)
    {
        return pEngine->pDevice;
    }
    #else
    {
        return NULL;
    }
    #endif
}

MA_API ma_log* ma_engine_get_log(ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return NULL;
    }

    if (pEngine->pLog != NULL) {
        return pEngine->pLog;
    } else {
        #if !defined(MA_NO_DEVICE_IO)
        {
            return ma_device_get_log(ma_engine_get_device(pEngine));
        }
        #else
        {
            return NULL;
        }
        #endif
    }
}

MA_API ma_node* ma_engine_get_endpoint(ma_engine* pEngine)
{
    return ma_node_graph_get_endpoint(&pEngine->nodeGraph);
}

MA_API ma_uint64 ma_engine_get_time_in_pcm_frames(const ma_engine* pEngine)
{
    return ma_node_graph_get_time(&pEngine->nodeGraph);
}

MA_API ma_uint64 ma_engine_get_time_in_milliseconds(const ma_engine* pEngine)
{
    return ma_engine_get_time_in_pcm_frames(pEngine) * 1000 / ma_engine_get_sample_rate(pEngine);
}

MA_API ma_result ma_engine_set_time_in_pcm_frames(ma_engine* pEngine, ma_uint64 globalTime)
{
    return ma_node_graph_set_time(&pEngine->nodeGraph, globalTime);
}

MA_API ma_result ma_engine_set_time_in_milliseconds(ma_engine* pEngine, ma_uint64 globalTime)
{
    return ma_engine_set_time_in_pcm_frames(pEngine, globalTime * ma_engine_get_sample_rate(pEngine) / 1000);
}

MA_API ma_uint64 ma_engine_get_time(const ma_engine* pEngine)
{
    return ma_engine_get_time_in_pcm_frames(pEngine);
}

MA_API ma_result ma_engine_set_time(ma_engine* pEngine, ma_uint64 globalTime)
{
    return ma_engine_set_time_in_pcm_frames(pEngine, globalTime);
}

MA_API ma_uint32 ma_engine_get_channels(const ma_engine* pEngine)
{
    return ma_node_graph_get_channels(&pEngine->nodeGraph);
}

MA_API ma_uint32 ma_engine_get_sample_rate(const ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return 0;
    }

    return pEngine->sampleRate;
}


MA_API ma_result ma_engine_start(ma_engine* pEngine)
{
    ma_result result;

    if (pEngine == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_DEVICE_IO)
    {
        if (pEngine->pDevice != NULL) {
            result = ma_device_start(pEngine->pDevice);
        } else {
            result = MA_INVALID_OPERATION;  /* The engine is running without a device which means there's no real notion of "starting" the engine. */
        }
    }
    #else
    {
        result = MA_INVALID_OPERATION;  /* Device IO is disabled, so there's no real notion of "starting" the engine. */
    }
    #endif

    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_engine_stop(ma_engine* pEngine)
{
    ma_result result;

    if (pEngine == NULL) {
        return MA_INVALID_ARGS;
    }

    #if !defined(MA_NO_DEVICE_IO)
    {
        if (pEngine->pDevice != NULL) {
            result = ma_device_stop(pEngine->pDevice);
        } else {
            result = MA_INVALID_OPERATION;  /* The engine is running without a device which means there's no real notion of "stopping" the engine. */
        }
    }
    #else
    {
        result = MA_INVALID_OPERATION;  /* Device IO is disabled, so there's no real notion of "stopping" the engine. */
    }
    #endif

    if (result != MA_SUCCESS) {
        return result;
    }

    return MA_SUCCESS;
}

MA_API ma_result ma_engine_set_volume(ma_engine* pEngine, float volume)
{
    if (pEngine == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_node_set_output_bus_volume(ma_node_graph_get_endpoint(&pEngine->nodeGraph), 0, volume);
}

MA_API float ma_engine_get_volume(ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return 0;
    }

    return ma_node_get_output_bus_volume(ma_node_graph_get_endpoint(&pEngine->nodeGraph), 0);
}

MA_API ma_result ma_engine_set_gain_db(ma_engine* pEngine, float gainDB)
{
    return ma_engine_set_volume(pEngine, ma_volume_db_to_linear(gainDB));
}

MA_API float ma_engine_get_gain_db(ma_engine* pEngine)
{
    return ma_volume_linear_to_db(ma_engine_get_volume(pEngine));
}


MA_API ma_uint32 ma_engine_get_listener_count(const ma_engine* pEngine)
{
    if (pEngine == NULL) {
        return 0;
    }

    return pEngine->listenerCount;
}

MA_API ma_uint32 ma_engine_find_closest_listener(const ma_engine* pEngine, float absolutePosX, float absolutePosY, float absolutePosZ)
{
    ma_uint32 iListener;
    ma_uint32 iListenerClosest;
    float closestLen2 = MA_FLT_MAX;

    if (pEngine == NULL || pEngine->listenerCount == 1) {
        return 0;
    }

    iListenerClosest = 0;
    for (iListener = 0; iListener < pEngine->listenerCount; iListener += 1) {
        if (ma_engine_listener_is_enabled(pEngine, iListener)) {
            float len2 = ma_vec3f_len2(ma_vec3f_sub(ma_spatializer_listener_get_position(&pEngine->listeners[iListener]), ma_vec3f_init_3f(absolutePosX, absolutePosY, absolutePosZ)));
            if (closestLen2 > len2) {
                closestLen2 = len2;
                iListenerClosest = iListener;
            }
        }
    }

    MA_ASSERT(iListenerClosest < 255);
    return iListenerClosest;
}

MA_API void ma_engine_listener_set_position(ma_engine* pEngine, ma_uint32 listenerIndex, float x, float y, float z)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_set_position(&pEngine->listeners[listenerIndex], x, y, z);
}

MA_API ma_vec3f ma_engine_listener_get_position(const ma_engine* pEngine, ma_uint32 listenerIndex)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_spatializer_listener_get_position(&pEngine->listeners[listenerIndex]);
}

MA_API void ma_engine_listener_set_direction(ma_engine* pEngine, ma_uint32 listenerIndex, float x, float y, float z)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_set_direction(&pEngine->listeners[listenerIndex], x, y, z);
}

MA_API ma_vec3f ma_engine_listener_get_direction(const ma_engine* pEngine, ma_uint32 listenerIndex)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return ma_vec3f_init_3f(0, 0, -1);
    }

    return ma_spatializer_listener_get_direction(&pEngine->listeners[listenerIndex]);
}

MA_API void ma_engine_listener_set_velocity(ma_engine* pEngine, ma_uint32 listenerIndex, float x, float y, float z)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_set_velocity(&pEngine->listeners[listenerIndex], x, y, z);
}

MA_API ma_vec3f ma_engine_listener_get_velocity(const ma_engine* pEngine, ma_uint32 listenerIndex)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_spatializer_listener_get_velocity(&pEngine->listeners[listenerIndex]);
}

MA_API void ma_engine_listener_set_cone(ma_engine* pEngine, ma_uint32 listenerIndex, float innerAngleInRadians, float outerAngleInRadians, float outerGain)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_set_cone(&pEngine->listeners[listenerIndex], innerAngleInRadians, outerAngleInRadians, outerGain);
}

MA_API void ma_engine_listener_get_cone(const ma_engine* pEngine, ma_uint32 listenerIndex, float* pInnerAngleInRadians, float* pOuterAngleInRadians, float* pOuterGain)
{
    if (pInnerAngleInRadians != NULL) {
        *pInnerAngleInRadians = 0;
    }

    if (pOuterAngleInRadians != NULL) {
        *pOuterAngleInRadians = 0;
    }

    if (pOuterGain != NULL) {
        *pOuterGain = 0;
    }

    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_get_cone(&pEngine->listeners[listenerIndex], pInnerAngleInRadians, pOuterAngleInRadians, pOuterGain);
}

MA_API void ma_engine_listener_set_world_up(ma_engine* pEngine, ma_uint32 listenerIndex, float x, float y, float z)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_set_world_up(&pEngine->listeners[listenerIndex], x, y, z);
}

MA_API ma_vec3f ma_engine_listener_get_world_up(const ma_engine* pEngine, ma_uint32 listenerIndex)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return ma_vec3f_init_3f(0, 1, 0);
    }

    return ma_spatializer_listener_get_world_up(&pEngine->listeners[listenerIndex]);
}

MA_API void ma_engine_listener_set_enabled(ma_engine* pEngine, ma_uint32 listenerIndex, ma_bool32 isEnabled)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return;
    }

    ma_spatializer_listener_set_enabled(&pEngine->listeners[listenerIndex], isEnabled);
}

MA_API ma_bool32 ma_engine_listener_is_enabled(const ma_engine* pEngine, ma_uint32 listenerIndex)
{
    if (pEngine == NULL || listenerIndex >= pEngine->listenerCount) {
        return MA_FALSE;
    }

    return ma_spatializer_listener_is_enabled(&pEngine->listeners[listenerIndex]);
}


#ifndef MA_NO_RESOURCE_MANAGER
MA_API ma_result ma_engine_play_sound_ex(ma_engine* pEngine, const char* pFilePath, ma_node* pNode, ma_uint32 nodeInputBusIndex)
{
    ma_result result = MA_SUCCESS;
    ma_sound_inlined* pSound = NULL;
    ma_sound_inlined* pNextSound = NULL;

    if (pEngine == NULL || pFilePath == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Attach to the endpoint node if nothing is specified. */
    if (pNode == NULL) {
        pNode = ma_node_graph_get_endpoint(&pEngine->nodeGraph);
        nodeInputBusIndex = 0;
    }

    /*
    We want to check if we can recycle an already-allocated inlined sound. Since this is just a
    helper I'm not *too* concerned about performance here and I'm happy to use a lock to keep
    the implementation simple. Maybe this can be optimized later if there's enough demand, but
    if this function is being used it probably means the caller doesn't really care too much.

    What we do is check the atEnd flag. When this is true, we can recycle the sound. Otherwise
    we just keep iterating. If we reach the end without finding a sound to recycle we just
    allocate a new one. This doesn't scale well for a massive number of sounds being played
    simultaneously as we don't ever actually free the sound objects. Some kind of garbage
    collection routine might be valuable for this which I'll think about.
    */
    ma_spinlock_lock(&pEngine->inlinedSoundLock);
    {
        ma_uint32 soundFlags = 0;

        for (pNextSound = pEngine->pInlinedSoundHead; pNextSound != NULL; pNextSound = pNextSound->pNext) {
            if (ma_sound_at_end(&pNextSound->sound)) {
                /*
                The sound is at the end which means it's available for recycling. All we need to do
                is uninitialize it and reinitialize it. All we're doing is recycling memory.
                */
                pSound = pNextSound;
                ma_atomic_fetch_sub_32(&pEngine->inlinedSoundCount, 1);
                break;
            }
        }

        if (pSound != NULL) {
            /*
            We actually want to detach the sound from the list here. The reason is because we want the sound
            to be in a consistent state at the non-recycled case to simplify the logic below.
            */
            if (pEngine->pInlinedSoundHead == pSound) {
                pEngine->pInlinedSoundHead =  pSound->pNext;
            }

            if (pSound->pPrev != NULL) {
                pSound->pPrev->pNext = pSound->pNext;
            }
            if (pSound->pNext != NULL) {
                pSound->pNext->pPrev = pSound->pPrev;
            }

            /* Now the previous sound needs to be uninitialized. */
            ma_sound_uninit(&pNextSound->sound);
        } else {
            /* No sound available for recycling. Allocate one now. */
            pSound = (ma_sound_inlined*)ma_malloc(sizeof(*pSound), &pEngine->allocationCallbacks);
        }

        if (pSound != NULL) {   /* Safety check for the allocation above. */
            /*
            At this point we should have memory allocated for the inlined sound. We just need
            to initialize it like a normal sound now.
            */
            soundFlags |= MA_SOUND_FLAG_ASYNC;                 /* For inlined sounds we don't want to be sitting around waiting for stuff to load so force an async load. */
            soundFlags |= MA_SOUND_FLAG_NO_DEFAULT_ATTACHMENT; /* We want specific control over where the sound is attached in the graph. We'll attach it manually just before playing the sound. */
            soundFlags |= MA_SOUND_FLAG_NO_PITCH;              /* Pitching isn't usable with inlined sounds, so disable it to save on speed. */
            soundFlags |= MA_SOUND_FLAG_NO_SPATIALIZATION;     /* Not currently doing spatialization with inlined sounds, but this might actually change later. For now disable spatialization. Will be removed if we ever add support for spatialization here. */

            result = ma_sound_init_from_file(pEngine, pFilePath, soundFlags, NULL, NULL, &pSound->sound);
            if (result == MA_SUCCESS) {
                /* Now attach the sound to the graph. */
                result = ma_node_attach_output_bus(pSound, 0, pNode, nodeInputBusIndex);
                if (result == MA_SUCCESS) {
                    /* At this point the sound should be loaded and we can go ahead and add it to the list. The new item becomes the new head. */
                    pSound->pNext = pEngine->pInlinedSoundHead;
                    pSound->pPrev = NULL;

                    pEngine->pInlinedSoundHead = pSound;    /* <-- This is what attaches the sound to the list. */
                    if (pSound->pNext != NULL) {
                        pSound->pNext->pPrev = pSound;
                    }
                } else {
                    ma_free(pSound, &pEngine->allocationCallbacks);
                }
            } else {
                ma_free(pSound, &pEngine->allocationCallbacks);
            }
        } else {
            result = MA_OUT_OF_MEMORY;
        }
    }
    ma_spinlock_unlock(&pEngine->inlinedSoundLock);

    if (result != MA_SUCCESS) {
        return result;
    }

    /* Finally we can start playing the sound. */
    result = ma_sound_start(&pSound->sound);
    if (result != MA_SUCCESS) {
        /* Failed to start the sound. We need to mark it for recycling and return an error. */
        ma_atomic_exchange_32(&pSound->sound.atEnd, MA_TRUE);
        return result;
    }

    ma_atomic_fetch_add_32(&pEngine->inlinedSoundCount, 1);
    return result;
}

MA_API ma_result ma_engine_play_sound(ma_engine* pEngine, const char* pFilePath, ma_sound_group* pGroup)
{
    return ma_engine_play_sound_ex(pEngine, pFilePath, pGroup, 0);
}
#endif


static ma_result ma_sound_preinit(ma_engine* pEngine, ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pSound);
    pSound->seekTarget = MA_SEEK_TARGET_NONE;

    if (pEngine == NULL) {
        return MA_INVALID_ARGS;
    }

    return MA_SUCCESS;
}

static ma_result ma_sound_init_from_data_source_internal(ma_engine* pEngine, const ma_sound_config* pConfig, ma_sound* pSound)
{
    ma_result result;
    ma_engine_node_config engineNodeConfig;
    ma_engine_node_type type;   /* Will be set to ma_engine_node_type_group if no data source is specified. */

    /* Do not clear pSound to zero here - that's done at a higher level with ma_sound_preinit(). */
    MA_ASSERT(pEngine != NULL);
    MA_ASSERT(pSound  != NULL);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    pSound->pDataSource = pConfig->pDataSource;

    if (pConfig->pDataSource != NULL) {
        type = ma_engine_node_type_sound;
    } else {
        type = ma_engine_node_type_group;
    }

    /*
    Sounds are engine nodes. Before we can initialize this we need to determine the channel count.
    If we can't do this we need to abort. It's up to the caller to ensure they're using a data
    source that provides this information upfront.
    */
    engineNodeConfig = ma_engine_node_config_init(pEngine, type, pConfig->flags);
    engineNodeConfig.channelsIn                  = pConfig->channelsIn;
    engineNodeConfig.channelsOut                 = pConfig->channelsOut;
    engineNodeConfig.volumeSmoothTimeInPCMFrames = pConfig->volumeSmoothTimeInPCMFrames;
    engineNodeConfig.monoExpansionMode           = pConfig->monoExpansionMode;

    if (engineNodeConfig.volumeSmoothTimeInPCMFrames == 0) {
        engineNodeConfig.volumeSmoothTimeInPCMFrames = pEngine->defaultVolumeSmoothTimeInPCMFrames;
    }

    /* If we're loading from a data source the input channel count needs to be the data source's native channel count. */
    if (pConfig->pDataSource != NULL) {
        result = ma_data_source_get_data_format(pConfig->pDataSource, NULL, &engineNodeConfig.channelsIn, &engineNodeConfig.sampleRate, NULL, 0);
        if (result != MA_SUCCESS) {
            return result;  /* Failed to retrieve the channel count. */
        }

        if (engineNodeConfig.channelsIn == 0) {
            return MA_INVALID_OPERATION;    /* Invalid channel count. */
        }

        if (engineNodeConfig.channelsOut == MA_SOUND_SOURCE_CHANNEL_COUNT) {
            engineNodeConfig.channelsOut = engineNodeConfig.channelsIn;
        }
    }


    /* Getting here means we should have a valid channel count and we can initialize the engine node. */
    result = ma_engine_node_init(&engineNodeConfig, &pEngine->allocationCallbacks, &pSound->engineNode);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* If no attachment is specified, attach the sound straight to the endpoint. */
    if (pConfig->pInitialAttachment == NULL) {
        /* No group. Attach straight to the endpoint by default, unless the caller has requested that it not. */
        if ((pConfig->flags & MA_SOUND_FLAG_NO_DEFAULT_ATTACHMENT) == 0) {
            result = ma_node_attach_output_bus(pSound, 0, ma_node_graph_get_endpoint(&pEngine->nodeGraph), 0);
        }
    } else {
        /* An attachment is specified. Attach to it by default. The sound has only a single output bus, and the config will specify which input bus to attach to. */
        result = ma_node_attach_output_bus(pSound, 0, pConfig->pInitialAttachment, pConfig->initialAttachmentInputBusIndex);
    }

    if (result != MA_SUCCESS) {
        ma_engine_node_uninit(&pSound->engineNode, &pEngine->allocationCallbacks);
        return result;
    }


    /* Apply initial range and looping state to the data source if applicable. */
    if (pConfig->rangeBegInPCMFrames != 0 || pConfig->rangeEndInPCMFrames != ~((ma_uint64)0)) {
        ma_data_source_set_range_in_pcm_frames(ma_sound_get_data_source(pSound), pConfig->rangeBegInPCMFrames, pConfig->rangeEndInPCMFrames);
    }

    if (pConfig->loopPointBegInPCMFrames != 0 || pConfig->loopPointEndInPCMFrames != ~((ma_uint64)0)) {
        ma_data_source_set_range_in_pcm_frames(ma_sound_get_data_source(pSound), pConfig->loopPointBegInPCMFrames, pConfig->loopPointEndInPCMFrames);
    }

    ma_sound_set_looping(pSound, pConfig->isLooping || ((pConfig->flags & MA_SOUND_FLAG_LOOPING) != 0));

    return MA_SUCCESS;
}

#ifndef MA_NO_RESOURCE_MANAGER
MA_API ma_result ma_sound_init_from_file_internal(ma_engine* pEngine, const ma_sound_config* pConfig, ma_sound* pSound)
{
    ma_result result = MA_SUCCESS;
    ma_uint32 flags;
    ma_sound_config config;
    ma_resource_manager_pipeline_notifications notifications;

    /*
    The engine requires knowledge of the channel count of the underlying data source before it can
    initialize the sound. Therefore, we need to make the resource manager wait until initialization
    of the underlying data source to be initialized so we can get access to the channel count. To
    do this, the MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT is forced.

    Because we're initializing the data source before the sound, there's a chance the notification
    will get triggered before this function returns. This is OK, so long as the caller is aware of
    it and can avoid accessing the sound from within the notification.
    */
    flags = pConfig->flags | MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_WAIT_INIT;
    if (pConfig->isLooping) {
        flags |= MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING;
    }

    pSound->pResourceManagerDataSource = (ma_resource_manager_data_source*)ma_malloc(sizeof(*pSound->pResourceManagerDataSource), &pEngine->allocationCallbacks);
    if (pSound->pResourceManagerDataSource == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    /* Removed in 0.12. Set pDoneFence on the notifications. */
    notifications = pConfig->initNotifications;
    if (pConfig->pDoneFence != NULL && notifications.done.pFence == NULL) {
        notifications.done.pFence = pConfig->pDoneFence;
    }

    /*
    We must wrap everything around the fence if one was specified. This ensures ma_fence_wait() does
    not return prematurely before the sound has finished initializing.
    */
    if (notifications.done.pFence) { ma_fence_acquire(notifications.done.pFence); }
    {
        ma_resource_manager_data_source_config resourceManagerDataSourceConfig = ma_resource_manager_data_source_config_init();
        resourceManagerDataSourceConfig.pFilePath                   = pConfig->pFilePath;
        resourceManagerDataSourceConfig.pFilePathW                  = pConfig->pFilePathW;
        resourceManagerDataSourceConfig.flags                       = flags;
        resourceManagerDataSourceConfig.pNotifications              = &notifications;
        resourceManagerDataSourceConfig.initialSeekPointInPCMFrames = pConfig->initialSeekPointInPCMFrames;
        resourceManagerDataSourceConfig.rangeBegInPCMFrames         = pConfig->rangeBegInPCMFrames;
        resourceManagerDataSourceConfig.rangeEndInPCMFrames         = pConfig->rangeEndInPCMFrames;
        resourceManagerDataSourceConfig.loopPointBegInPCMFrames     = pConfig->loopPointBegInPCMFrames;
        resourceManagerDataSourceConfig.loopPointEndInPCMFrames     = pConfig->loopPointEndInPCMFrames;
        resourceManagerDataSourceConfig.isLooping                   = (flags & MA_RESOURCE_MANAGER_DATA_SOURCE_FLAG_LOOPING) != 0;

        result = ma_resource_manager_data_source_init_ex(pEngine->pResourceManager, &resourceManagerDataSourceConfig, pSound->pResourceManagerDataSource);
        if (result != MA_SUCCESS) {
            goto done;
        }

        pSound->ownsDataSource = MA_TRUE;   /* <-- Important. Not setting this will result in the resource manager data source never getting uninitialized. */

        /* We need to use a slightly customized version of the config so we'll need to make a copy. */
        config = *pConfig;
        config.pFilePath   = NULL;
        config.pFilePathW  = NULL;
        config.pDataSource = pSound->pResourceManagerDataSource;

        result = ma_sound_init_from_data_source_internal(pEngine, &config, pSound);
        if (result != MA_SUCCESS) {
            ma_resource_manager_data_source_uninit(pSound->pResourceManagerDataSource);
            ma_free(pSound->pResourceManagerDataSource, &pEngine->allocationCallbacks);
            MA_ZERO_OBJECT(pSound);
            goto done;
        }
    }
done:
    if (notifications.done.pFence) { ma_fence_release(notifications.done.pFence); }
    return result;
}

MA_API ma_result ma_sound_init_from_file(ma_engine* pEngine, const char* pFilePath, ma_uint32 flags, ma_sound_group* pGroup, ma_fence* pDoneFence, ma_sound* pSound)
{
    ma_sound_config config;

    if (pFilePath == NULL) {
        return MA_INVALID_ARGS;
    }

    config = ma_sound_config_init_2(pEngine);
    config.pFilePath          = pFilePath;
    config.flags              = flags;
    config.pInitialAttachment = pGroup;
    config.pDoneFence         = pDoneFence;

    return ma_sound_init_ex(pEngine, &config, pSound);
}

MA_API ma_result ma_sound_init_from_file_w(ma_engine* pEngine, const wchar_t* pFilePath, ma_uint32 flags, ma_sound_group* pGroup, ma_fence* pDoneFence, ma_sound* pSound)
{
    ma_sound_config config;

    if (pFilePath == NULL) {
        return MA_INVALID_ARGS;
    }

    config = ma_sound_config_init_2(pEngine);
    config.pFilePathW         = pFilePath;
    config.flags              = flags;
    config.pInitialAttachment = pGroup;
    config.pDoneFence         = pDoneFence;

    return ma_sound_init_ex(pEngine, &config, pSound);
}

MA_API ma_result ma_sound_init_copy(ma_engine* pEngine, const ma_sound* pExistingSound, ma_uint32 flags, ma_sound_group* pGroup, ma_sound* pSound)
{
    ma_result result;
    ma_sound_config config;

    result = ma_sound_preinit(pEngine, pSound);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pExistingSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Cloning only works for data buffers (not streams) that are loaded from the resource manager. */
    if (pExistingSound->pResourceManagerDataSource == NULL) {
        return MA_INVALID_OPERATION;
    }

    /*
    We need to make a clone of the data source. If the data source is not a data buffer (i.e. a stream)
    this will fail.
    */
    pSound->pResourceManagerDataSource = (ma_resource_manager_data_source*)ma_malloc(sizeof(*pSound->pResourceManagerDataSource), &pEngine->allocationCallbacks);
    if (pSound->pResourceManagerDataSource == NULL) {
        return MA_OUT_OF_MEMORY;
    }

    result = ma_resource_manager_data_source_init_copy(pEngine->pResourceManager, pExistingSound->pResourceManagerDataSource, pSound->pResourceManagerDataSource);
    if (result != MA_SUCCESS) {
        ma_free(pSound->pResourceManagerDataSource, &pEngine->allocationCallbacks);
        return result;
    }

    config = ma_sound_config_init_2(pEngine);
    config.pDataSource                 = pSound->pResourceManagerDataSource;
    config.flags                       = flags;
    config.pInitialAttachment          = pGroup;
    config.monoExpansionMode           = pExistingSound->engineNode.monoExpansionMode;
    config.volumeSmoothTimeInPCMFrames = pExistingSound->engineNode.volumeSmoothTimeInPCMFrames;

    result = ma_sound_init_from_data_source_internal(pEngine, &config, pSound);
    if (result != MA_SUCCESS) {
        ma_resource_manager_data_source_uninit(pSound->pResourceManagerDataSource);
        ma_free(pSound->pResourceManagerDataSource, &pEngine->allocationCallbacks);
        MA_ZERO_OBJECT(pSound);
        return result;
    }

    /* Make sure the sound is marked as the owner of the data source or else it will never get uninitialized. */
    pSound->ownsDataSource = MA_TRUE;

    return MA_SUCCESS;
}
#endif

MA_API ma_result ma_sound_init_from_data_source(ma_engine* pEngine, ma_data_source* pDataSource, ma_uint32 flags, ma_sound_group* pGroup, ma_sound* pSound)
{
    ma_sound_config config = ma_sound_config_init_2(pEngine);
    config.pDataSource        = pDataSource;
    config.flags              = flags;
    config.pInitialAttachment = pGroup;
    return ma_sound_init_ex(pEngine, &config, pSound);
}

MA_API ma_result ma_sound_init_ex(ma_engine* pEngine, const ma_sound_config* pConfig, ma_sound* pSound)
{
    ma_result result;

    result = ma_sound_preinit(pEngine, pSound);
    if (result != MA_SUCCESS) {
        return result;
    }

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    pSound->endCallback          = pConfig->endCallback;
    pSound->pEndCallbackUserData = pConfig->pEndCallbackUserData;

    /* We need to load the sound differently depending on whether or not we're loading from a file. */
#ifndef MA_NO_RESOURCE_MANAGER
    if (pConfig->pFilePath != NULL || pConfig->pFilePathW != NULL) {
        return ma_sound_init_from_file_internal(pEngine, pConfig, pSound);
    } else
#endif
    {
        /*
        Getting here means we're not loading from a file. We may be loading from an already-initialized
        data source, or none at all. If we aren't specifying any data source, we'll be initializing
        the equivalent to a group. ma_data_source_init_from_data_source_internal() will deal with this
        for us, so no special treatment required here.
        */
        return ma_sound_init_from_data_source_internal(pEngine, pConfig, pSound);
    }
}

MA_API void ma_sound_uninit(ma_sound* pSound)
{
    if (pSound == NULL) {
        return;
    }

    /*
    Always uninitialize the node first. This ensures it's detached from the graph and does not return until it has done
    so which makes thread safety beyond this point trivial.
    */
    ma_engine_node_uninit(&pSound->engineNode, &pSound->engineNode.pEngine->allocationCallbacks);

    /* Once the sound is detached from the group we can guarantee that it won't be referenced by the mixer thread which means it's safe for us to destroy the data source. */
#ifndef MA_NO_RESOURCE_MANAGER
    if (pSound->ownsDataSource) {
        ma_resource_manager_data_source_uninit(pSound->pResourceManagerDataSource);
        ma_free(pSound->pResourceManagerDataSource, &pSound->engineNode.pEngine->allocationCallbacks);
        pSound->pDataSource = NULL;
    }
#else
    MA_ASSERT(pSound->ownsDataSource == MA_FALSE);
#endif
}

MA_API ma_engine* ma_sound_get_engine(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return NULL;
    }

    return pSound->engineNode.pEngine;
}

MA_API ma_data_source* ma_sound_get_data_source(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return NULL;
    }

    return pSound->pDataSource;
}

MA_API ma_result ma_sound_start(ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* If the sound is already playing, do nothing. */
    if (ma_sound_is_playing(pSound)) {
        return MA_SUCCESS;
    }

    /* If the sound is at the end it means we want to start from the start again. */
    if (ma_sound_at_end(pSound)) {
        ma_result result = ma_data_source_seek_to_pcm_frame(pSound->pDataSource, 0);
        if (result != MA_SUCCESS && result != MA_NOT_IMPLEMENTED) {
            return result;  /* Failed to seek back to the start. */
        }

        /* Make sure we clear the end indicator. */
        ma_atomic_exchange_32(&pSound->atEnd, MA_FALSE);
    }

    /* Make sure the sound is started. If there's a start delay, the sound won't actually start until the start time is reached. */
    ma_node_set_state(pSound, ma_node_state_started);

    return MA_SUCCESS;
}

MA_API ma_result ma_sound_stop(ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* This will stop the sound immediately. Use ma_sound_set_stop_time() to stop the sound at a specific time. */
    ma_node_set_state(pSound, ma_node_state_stopped);

    return MA_SUCCESS;
}

MA_API ma_result ma_sound_stop_with_fade_in_pcm_frames(ma_sound* pSound, ma_uint64 fadeLengthInFrames)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Stopping with a fade out requires us to schedule the stop into the future by the fade length. */
    ma_sound_set_stop_time_with_fade_in_pcm_frames(pSound, ma_engine_get_time_in_pcm_frames(ma_sound_get_engine(pSound)) + fadeLengthInFrames, fadeLengthInFrames);

    return MA_SUCCESS;
}

MA_API ma_result ma_sound_stop_with_fade_in_milliseconds(ma_sound* pSound, ma_uint64 fadeLengthInMilliseconds)
{
    ma_uint64 sampleRate;

    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    sampleRate = ma_engine_get_sample_rate(ma_sound_get_engine(pSound));

    return ma_sound_stop_with_fade_in_pcm_frames(pSound, (fadeLengthInMilliseconds * sampleRate) / 1000);
}

MA_API void ma_sound_set_volume(ma_sound* pSound, float volume)
{
    if (pSound == NULL) {
        return;
    }

    ma_engine_node_set_volume(&pSound->engineNode, volume);
}

MA_API float ma_sound_get_volume(const ma_sound* pSound)
{
    float volume = 0;

    if (pSound == NULL) {
        return 0;
    }

    ma_engine_node_get_volume(&pSound->engineNode, &volume);

    return volume;
}

MA_API void ma_sound_set_pan(ma_sound* pSound, float pan)
{
    if (pSound == NULL) {
        return;
    }

    ma_panner_set_pan(&pSound->engineNode.panner, pan);
}

MA_API float ma_sound_get_pan(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_panner_get_pan(&pSound->engineNode.panner);
}

MA_API void ma_sound_set_pan_mode(ma_sound* pSound, ma_pan_mode panMode)
{
    if (pSound == NULL) {
        return;
    }

    ma_panner_set_mode(&pSound->engineNode.panner, panMode);
}

MA_API ma_pan_mode ma_sound_get_pan_mode(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return ma_pan_mode_balance;
    }

    return ma_panner_get_mode(&pSound->engineNode.panner);
}

MA_API void ma_sound_set_pitch(ma_sound* pSound, float pitch)
{
    if (pSound == NULL) {
        return;
    }

    if (pitch <= 0) {
        return;
    }

    ma_atomic_exchange_explicit_f32(&pSound->engineNode.pitch, pitch, ma_atomic_memory_order_release);
}

MA_API float ma_sound_get_pitch(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_atomic_load_f32(&pSound->engineNode.pitch);    /* Naughty const-cast for this. */
}

MA_API void ma_sound_set_spatialization_enabled(ma_sound* pSound, ma_bool32 enabled)
{
    if (pSound == NULL) {
        return;
    }

    ma_atomic_exchange_explicit_32(&pSound->engineNode.isSpatializationDisabled, !enabled, ma_atomic_memory_order_release);
}

MA_API ma_bool32 ma_sound_is_spatialization_enabled(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_FALSE;
    }

    return ma_engine_node_is_spatialization_enabled(&pSound->engineNode);
}

MA_API void ma_sound_set_pinned_listener_index(ma_sound* pSound, ma_uint32 listenerIndex)
{
    if (pSound == NULL || listenerIndex >= ma_engine_get_listener_count(ma_sound_get_engine(pSound))) {
        return;
    }

    ma_atomic_exchange_explicit_32(&pSound->engineNode.pinnedListenerIndex, listenerIndex, ma_atomic_memory_order_release);
}

MA_API ma_uint32 ma_sound_get_pinned_listener_index(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_LISTENER_INDEX_CLOSEST;
    }

    return ma_atomic_load_explicit_32(&pSound->engineNode.pinnedListenerIndex, ma_atomic_memory_order_acquire);
}

MA_API ma_uint32 ma_sound_get_listener_index(const ma_sound* pSound)
{
    ma_uint32 listenerIndex;

    if (pSound == NULL) {
        return 0;
    }

    listenerIndex = ma_sound_get_pinned_listener_index(pSound);
    if (listenerIndex == MA_LISTENER_INDEX_CLOSEST) {
        ma_vec3f position = ma_sound_get_position(pSound);
        return ma_engine_find_closest_listener(ma_sound_get_engine(pSound), position.x, position.y, position.z);
    }

    return listenerIndex;
}

MA_API ma_vec3f ma_sound_get_direction_to_listener(const ma_sound* pSound)
{
    ma_vec3f relativePos;
    ma_engine* pEngine;

    if (pSound == NULL) {
        return ma_vec3f_init_3f(0, 0, -1);
    }

    pEngine = ma_sound_get_engine(pSound);
    if (pEngine == NULL) {
        return ma_vec3f_init_3f(0, 0, -1);
    }

    ma_spatializer_get_relative_position_and_direction(&pSound->engineNode.spatializer, &pEngine->listeners[ma_sound_get_listener_index(pSound)], &relativePos, NULL);

    return ma_vec3f_normalize(ma_vec3f_neg(relativePos));
}

MA_API void ma_sound_set_position(ma_sound* pSound, float x, float y, float z)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_position(&pSound->engineNode.spatializer, x, y, z);
}

MA_API ma_vec3f ma_sound_get_position(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_spatializer_get_position(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_direction(ma_sound* pSound, float x, float y, float z)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_direction(&pSound->engineNode.spatializer, x, y, z);
}

MA_API ma_vec3f ma_sound_get_direction(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_spatializer_get_direction(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_velocity(ma_sound* pSound, float x, float y, float z)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_velocity(&pSound->engineNode.spatializer, x, y, z);
}

MA_API ma_vec3f ma_sound_get_velocity(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return ma_vec3f_init_3f(0, 0, 0);
    }

    return ma_spatializer_get_velocity(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_attenuation_model(ma_sound* pSound, ma_attenuation_model attenuationModel)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_attenuation_model(&pSound->engineNode.spatializer, attenuationModel);
}

MA_API ma_attenuation_model ma_sound_get_attenuation_model(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return ma_attenuation_model_none;
    }

    return ma_spatializer_get_attenuation_model(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_positioning(ma_sound* pSound, ma_positioning positioning)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_positioning(&pSound->engineNode.spatializer, positioning);
}

MA_API ma_positioning ma_sound_get_positioning(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return ma_positioning_absolute;
    }

    return ma_spatializer_get_positioning(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_rolloff(ma_sound* pSound, float rolloff)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_rolloff(&pSound->engineNode.spatializer, rolloff);
}

MA_API float ma_sound_get_rolloff(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_spatializer_get_rolloff(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_min_gain(ma_sound* pSound, float minGain)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_min_gain(&pSound->engineNode.spatializer, minGain);
}

MA_API float ma_sound_get_min_gain(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_spatializer_get_min_gain(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_max_gain(ma_sound* pSound, float maxGain)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_max_gain(&pSound->engineNode.spatializer, maxGain);
}

MA_API float ma_sound_get_max_gain(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_spatializer_get_max_gain(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_min_distance(ma_sound* pSound, float minDistance)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_min_distance(&pSound->engineNode.spatializer, minDistance);
}

MA_API float ma_sound_get_min_distance(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_spatializer_get_min_distance(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_max_distance(ma_sound* pSound, float maxDistance)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_max_distance(&pSound->engineNode.spatializer, maxDistance);
}

MA_API float ma_sound_get_max_distance(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_spatializer_get_max_distance(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_cone(ma_sound* pSound, float innerAngleInRadians, float outerAngleInRadians, float outerGain)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_cone(&pSound->engineNode.spatializer, innerAngleInRadians, outerAngleInRadians, outerGain);
}

MA_API void ma_sound_get_cone(const ma_sound* pSound, float* pInnerAngleInRadians, float* pOuterAngleInRadians, float* pOuterGain)
{
    if (pInnerAngleInRadians != NULL) {
        *pInnerAngleInRadians = 0;
    }

    if (pOuterAngleInRadians != NULL) {
        *pOuterAngleInRadians = 0;
    }

    if (pOuterGain != NULL) {
        *pOuterGain = 0;
    }

    if (pSound == NULL) {
        return;
    }

    ma_spatializer_get_cone(&pSound->engineNode.spatializer, pInnerAngleInRadians, pOuterAngleInRadians, pOuterGain);
}

MA_API void ma_sound_set_doppler_factor(ma_sound* pSound, float dopplerFactor)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_doppler_factor(&pSound->engineNode.spatializer, dopplerFactor);
}

MA_API float ma_sound_get_doppler_factor(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_spatializer_get_doppler_factor(&pSound->engineNode.spatializer);
}

MA_API void ma_sound_set_directional_attenuation_factor(ma_sound* pSound, float directionalAttenuationFactor)
{
    if (pSound == NULL) {
        return;
    }

    ma_spatializer_set_directional_attenuation_factor(&pSound->engineNode.spatializer, directionalAttenuationFactor);
}

MA_API float ma_sound_get_directional_attenuation_factor(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 1;
    }

    return ma_spatializer_get_directional_attenuation_factor(&pSound->engineNode.spatializer);
}


MA_API void ma_sound_set_fade_in_pcm_frames(ma_sound* pSound, float volumeBeg, float volumeEnd, ma_uint64 fadeLengthInFrames)
{
    if (pSound == NULL) {
        return;
    }

    ma_sound_set_fade_start_in_pcm_frames(pSound, volumeBeg, volumeEnd, fadeLengthInFrames, (~(ma_uint64)0));
}

MA_API void ma_sound_set_fade_in_milliseconds(ma_sound* pSound, float volumeBeg, float volumeEnd, ma_uint64 fadeLengthInMilliseconds)
{
    if (pSound == NULL) {
        return;
    }

    ma_sound_set_fade_in_pcm_frames(pSound, volumeBeg, volumeEnd, (fadeLengthInMilliseconds * pSound->engineNode.fader.config.sampleRate) / 1000);
}

MA_API void ma_sound_set_fade_start_in_pcm_frames(ma_sound* pSound, float volumeBeg, float volumeEnd, ma_uint64 fadeLengthInFrames, ma_uint64 absoluteGlobalTimeInFrames)
{
    if (pSound == NULL) {
        return;
    }

    /*
    We don't want to update the fader at this point because we need to use the engine's current time
    to derive the fader's start offset. The timer is being updated on the audio thread so in order to
    do this as accurately as possible we'll need to defer this to the audio thread.
    */
    ma_atomic_float_set(&pSound->engineNode.fadeSettings.volumeBeg, volumeBeg);
    ma_atomic_float_set(&pSound->engineNode.fadeSettings.volumeEnd, volumeEnd);
    ma_atomic_uint64_set(&pSound->engineNode.fadeSettings.fadeLengthInFrames, fadeLengthInFrames);
    ma_atomic_uint64_set(&pSound->engineNode.fadeSettings.absoluteGlobalTimeInFrames, absoluteGlobalTimeInFrames);
}

MA_API void ma_sound_set_fade_start_in_milliseconds(ma_sound* pSound, float volumeBeg, float volumeEnd, ma_uint64 fadeLengthInMilliseconds, ma_uint64 absoluteGlobalTimeInMilliseconds)
{
    ma_uint32 sampleRate;

    if (pSound == NULL) {
        return;
    }

    sampleRate = ma_engine_get_sample_rate(ma_sound_get_engine(pSound));

    ma_sound_set_fade_start_in_pcm_frames(pSound, volumeBeg, volumeEnd, (fadeLengthInMilliseconds * sampleRate) / 1000, (absoluteGlobalTimeInMilliseconds * sampleRate) / 1000);
}

MA_API float ma_sound_get_current_fade_volume(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    return ma_fader_get_current_volume(&pSound->engineNode.fader);
}

MA_API void ma_sound_set_start_time_in_pcm_frames(ma_sound* pSound, ma_uint64 absoluteGlobalTimeInFrames)
{
    if (pSound == NULL) {
        return;
    }

    ma_node_set_state_time(pSound, ma_node_state_started, absoluteGlobalTimeInFrames);
}

MA_API void ma_sound_set_start_time_in_milliseconds(ma_sound* pSound, ma_uint64 absoluteGlobalTimeInMilliseconds)
{
    if (pSound == NULL) {
        return;
    }

    ma_sound_set_start_time_in_pcm_frames(pSound, absoluteGlobalTimeInMilliseconds * ma_engine_get_sample_rate(ma_sound_get_engine(pSound)) / 1000);
}

MA_API void ma_sound_set_stop_time_in_pcm_frames(ma_sound* pSound, ma_uint64 absoluteGlobalTimeInFrames)
{
    if (pSound == NULL) {
        return;
    }

    ma_sound_set_stop_time_with_fade_in_pcm_frames(pSound, absoluteGlobalTimeInFrames, 0);
}

MA_API void ma_sound_set_stop_time_in_milliseconds(ma_sound* pSound, ma_uint64 absoluteGlobalTimeInMilliseconds)
{
    if (pSound == NULL) {
        return;
    }

    ma_sound_set_stop_time_in_pcm_frames(pSound, absoluteGlobalTimeInMilliseconds * ma_engine_get_sample_rate(ma_sound_get_engine(pSound)) / 1000);
}

MA_API void ma_sound_set_stop_time_with_fade_in_pcm_frames(ma_sound* pSound, ma_uint64 stopAbsoluteGlobalTimeInFrames, ma_uint64 fadeLengthInFrames)
{
    if (pSound == NULL) {
        return;
    }

    if (fadeLengthInFrames > 0) {
        if (fadeLengthInFrames > stopAbsoluteGlobalTimeInFrames) {
            fadeLengthInFrames = stopAbsoluteGlobalTimeInFrames;
        }

        ma_sound_set_fade_start_in_pcm_frames(pSound, -1, 0, fadeLengthInFrames, stopAbsoluteGlobalTimeInFrames - fadeLengthInFrames);
    }

    ma_node_set_state_time(pSound, ma_node_state_stopped, stopAbsoluteGlobalTimeInFrames);
}

MA_API void ma_sound_set_stop_time_with_fade_in_milliseconds(ma_sound* pSound, ma_uint64 stopAbsoluteGlobalTimeInMilliseconds, ma_uint64 fadeLengthInMilliseconds)
{
    ma_uint32 sampleRate;

    if (pSound == NULL) {
        return;
    }

    sampleRate = ma_engine_get_sample_rate(ma_sound_get_engine(pSound));

    ma_sound_set_stop_time_with_fade_in_pcm_frames(pSound, (stopAbsoluteGlobalTimeInMilliseconds * sampleRate) / 1000, (fadeLengthInMilliseconds * sampleRate) / 1000);
}

MA_API ma_bool32 ma_sound_is_playing(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_FALSE;
    }

    return ma_node_get_state_by_time(pSound, ma_engine_get_time_in_pcm_frames(ma_sound_get_engine(pSound))) == ma_node_state_started;
}

MA_API ma_uint64 ma_sound_get_time_in_pcm_frames(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return 0;
    }

    return ma_node_get_time(pSound);
}

MA_API ma_uint64 ma_sound_get_time_in_milliseconds(const ma_sound* pSound)
{
    return ma_sound_get_time_in_pcm_frames(pSound) * 1000 / ma_engine_get_sample_rate(ma_sound_get_engine(pSound));
}

MA_API void ma_sound_set_looping(ma_sound* pSound, ma_bool32 isLooping)
{
    if (pSound == NULL) {
        return;
    }

    /* Looping is only a valid concept if the sound is backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return;
    }

    /* The looping state needs to be applied to the data source in order for any looping to actually happen. */
    ma_data_source_set_looping(pSound->pDataSource, isLooping);
}

MA_API ma_bool32 ma_sound_is_looping(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_FALSE;
    }

    /* There is no notion of looping for sounds that are not backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_FALSE;
    }

    return ma_data_source_is_looping(pSound->pDataSource);
}

MA_API ma_bool32 ma_sound_at_end(const ma_sound* pSound)
{
    if (pSound == NULL) {
        return MA_FALSE;
    }

    /* There is no notion of an end of a sound if it's not backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_FALSE;
    }

    return ma_sound_get_at_end(pSound);
}

MA_API ma_result ma_sound_seek_to_pcm_frame(ma_sound* pSound, ma_uint64 frameIndex)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* Seeking is only valid for sounds that are backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_INVALID_OPERATION;
    }

    /* We can't be seeking while reading at the same time. We just set the seek target and get the mixing thread to do the actual seek. */
    ma_atomic_exchange_64(&pSound->seekTarget, frameIndex);

    return MA_SUCCESS;
}

MA_API ma_result ma_sound_seek_to_second(ma_sound* pSound, float seekPointInSeconds)
{
    ma_uint64 frameIndex;
    ma_uint32 sampleRate;
    ma_result result;

    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    result = ma_sound_get_data_format(pSound, NULL, NULL, &sampleRate, NULL, 0);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* We need PCM frames. We need to convert first */
    frameIndex = (ma_uint64)(seekPointInSeconds * sampleRate);

    return ma_sound_seek_to_pcm_frame(pSound, frameIndex);
}

MA_API ma_result ma_sound_get_data_format(ma_sound* pSound, ma_format* pFormat, ma_uint32* pChannels, ma_uint32* pSampleRate, ma_channel* pChannelMap, size_t channelMapCap)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The data format is retrieved directly from the data source if the sound is backed by one. Otherwise we pull it from the node. */
    if (pSound->pDataSource == NULL) {
        ma_uint32 channels;

        if (pFormat != NULL) {
            *pFormat = ma_format_f32;
        }

        channels = ma_node_get_input_channels(&pSound->engineNode, 0);
        if (pChannels != NULL) {
            *pChannels = channels;
        }

        if (pSampleRate != NULL) {
            *pSampleRate = pSound->engineNode.resampler.config.sampleRateIn;
        }

        if (pChannelMap != NULL) {
            ma_channel_map_init_standard(ma_standard_channel_map_default, pChannelMap, channelMapCap, channels);
        }

        return MA_SUCCESS;
    } else {
        return ma_data_source_get_data_format(pSound->pDataSource, pFormat, pChannels, pSampleRate, pChannelMap, channelMapCap);
    }
}

MA_API ma_result ma_sound_get_cursor_in_pcm_frames(ma_sound* pSound, ma_uint64* pCursor)
{
    ma_uint64 seekTarget;

    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The notion of a cursor is only valid for sounds that are backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_INVALID_OPERATION;
    }

    seekTarget = ma_atomic_load_64(&pSound->seekTarget);
    if (seekTarget != MA_SEEK_TARGET_NONE) {
        *pCursor = seekTarget;
        return MA_SUCCESS;
    } else {
        return ma_data_source_get_cursor_in_pcm_frames(pSound->pDataSource, pCursor);
    }
}

MA_API ma_result ma_sound_get_length_in_pcm_frames(ma_sound* pSound, ma_uint64* pLength)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The notion of a sound length is only valid for sounds that are backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_INVALID_OPERATION;
    }

    return ma_data_source_get_length_in_pcm_frames(pSound->pDataSource, pLength);
}

MA_API ma_result ma_sound_get_cursor_in_seconds(ma_sound* pSound, float* pCursor)
{
    ma_result result;
    ma_uint64 cursorInPCMFrames;
    ma_uint32 sampleRate;

    if (pCursor != NULL) {
        *pCursor = 0;
    }

    result = ma_sound_get_cursor_in_pcm_frames(pSound, &cursorInPCMFrames);
    if (result != MA_SUCCESS) {
        return result;
    }

    result = ma_sound_get_data_format(pSound, NULL, NULL, &sampleRate, NULL, 0);
    if (result != MA_SUCCESS) {
        return result;
    }

    /* VC6 does not support division of unsigned 64-bit integers with floating point numbers. Need to use a signed number. This shouldn't effect anything in practice. */
    *pCursor = (ma_int64)cursorInPCMFrames / (float)sampleRate;

    return MA_SUCCESS;
}

MA_API ma_result ma_sound_get_length_in_seconds(ma_sound* pSound, float* pLength)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The notion of a sound length is only valid for sounds that are backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_INVALID_OPERATION;
    }

    return ma_data_source_get_length_in_seconds(pSound->pDataSource, pLength);
}

MA_API ma_result ma_sound_set_end_callback(ma_sound* pSound, ma_sound_end_proc callback, void* pUserData)
{
    if (pSound == NULL) {
        return MA_INVALID_ARGS;
    }

    /* The notion of an end is only valid for sounds that are backed by a data source. */
    if (pSound->pDataSource == NULL) {
        return MA_INVALID_OPERATION;
    }

    pSound->endCallback          = callback;
    pSound->pEndCallbackUserData = pUserData;

    return MA_SUCCESS;
}


MA_API ma_result ma_sound_group_init(ma_engine* pEngine, ma_uint32 flags, ma_sound_group* pParentGroup, ma_sound_group* pGroup)
{
    ma_sound_group_config config = ma_sound_group_config_init_2(pEngine);
    config.flags              = flags;
    config.pInitialAttachment = pParentGroup;
    return ma_sound_group_init_ex(pEngine, &config, pGroup);
}

MA_API ma_result ma_sound_group_init_ex(ma_engine* pEngine, const ma_sound_group_config* pConfig, ma_sound_group* pGroup)
{
    ma_sound_config soundConfig;

    if (pGroup == NULL) {
        return MA_INVALID_ARGS;
    }

    MA_ZERO_OBJECT(pGroup);

    if (pConfig == NULL) {
        return MA_INVALID_ARGS;
    }

    /* A sound group is just a sound without a data source. */
    soundConfig = *pConfig;
    soundConfig.pFilePath   = NULL;
    soundConfig.pFilePathW  = NULL;
    soundConfig.pDataSource = NULL;

    /*
    Groups need to have spatialization disabled by default because I think it'll be pretty rare
    that programs will want to spatialize groups (but not unheard of). Certainly it feels like
    disabling this by default feels like the right option. Spatialization can be enabled with a
    call to ma_sound_group_set_spatialization_enabled().
    */
    soundConfig.flags |= MA_SOUND_FLAG_NO_SPATIALIZATION;

    return ma_sound_init_ex(pEngine, &soundConfig, pGroup);
}

MA_API void ma_sound_group_uninit(ma_sound_group* pGroup)
{
    ma_sound_uninit(pGroup);
}

MA_API ma_engine* ma_sound_group_get_engine(const ma_sound_group* pGroup)
{
    return ma_sound_get_engine(pGroup);
}

MA_API ma_result ma_sound_group_start(ma_sound_group* pGroup)
{
    return ma_sound_start(pGroup);
}

MA_API ma_result ma_sound_group_stop(ma_sound_group* pGroup)
{
    return ma_sound_stop(pGroup);
}

MA_API void ma_sound_group_set_volume(ma_sound_group* pGroup, float volume)
{
    ma_sound_set_volume(pGroup, volume);
}

MA_API float ma_sound_group_get_volume(const ma_sound_group* pGroup)
{
    return ma_sound_get_volume(pGroup);
}

MA_API void ma_sound_group_set_pan(ma_sound_group* pGroup, float pan)
{
    ma_sound_set_pan(pGroup, pan);
}

MA_API float ma_sound_group_get_pan(const ma_sound_group* pGroup)
{
    return ma_sound_get_pan(pGroup);
}

MA_API void ma_sound_group_set_pan_mode(ma_sound_group* pGroup, ma_pan_mode panMode)
{
    ma_sound_set_pan_mode(pGroup, panMode);
}

MA_API ma_pan_mode ma_sound_group_get_pan_mode(const ma_sound_group* pGroup)
{
    return ma_sound_get_pan_mode(pGroup);
}

MA_API void ma_sound_group_set_pitch(ma_sound_group* pGroup, float pitch)
{
    ma_sound_set_pitch(pGroup, pitch);
}

MA_API float ma_sound_group_get_pitch(const ma_sound_group* pGroup)
{
    return ma_sound_get_pitch(pGroup);
}

MA_API void ma_sound_group_set_spatialization_enabled(ma_sound_group* pGroup, ma_bool32 enabled)
{
    ma_sound_set_spatialization_enabled(pGroup, enabled);
}

MA_API ma_bool32 ma_sound_group_is_spatialization_enabled(const ma_sound_group* pGroup)
{
    return ma_sound_is_spatialization_enabled(pGroup);
}

MA_API void ma_sound_group_set_pinned_listener_index(ma_sound_group* pGroup, ma_uint32 listenerIndex)
{
    ma_sound_set_pinned_listener_index(pGroup, listenerIndex);
}

MA_API ma_uint32 ma_sound_group_get_pinned_listener_index(const ma_sound_group* pGroup)
{
    return ma_sound_get_pinned_listener_index(pGroup);
}

MA_API ma_uint32 ma_sound_group_get_listener_index(const ma_sound_group* pGroup)
{
    return ma_sound_get_listener_index(pGroup);
}

MA_API ma_vec3f ma_sound_group_get_direction_to_listener(const ma_sound_group* pGroup)
{
    return ma_sound_get_direction_to_listener(pGroup);
}

MA_API void ma_sound_group_set_position(ma_sound_group* pGroup, float x, float y, float z)
{
    ma_sound_set_position(pGroup, x, y, z);
}

MA_API ma_vec3f ma_sound_group_get_position(const ma_sound_group* pGroup)
{
    return ma_sound_get_position(pGroup);
}

MA_API void ma_sound_group_set_direction(ma_sound_group* pGroup, float x, float y, float z)
{
    ma_sound_set_direction(pGroup, x, y, z);
}

MA_API ma_vec3f ma_sound_group_get_direction(const ma_sound_group* pGroup)
{
    return ma_sound_get_direction(pGroup);
}

MA_API void ma_sound_group_set_velocity(ma_sound_group* pGroup, float x, float y, float z)
{
    ma_sound_set_velocity(pGroup, x, y, z);
}

MA_API ma_vec3f ma_sound_group_get_velocity(const ma_sound_group* pGroup)
{
    return ma_sound_get_velocity(pGroup);
}

MA_API void ma_sound_group_set_attenuation_model(ma_sound_group* pGroup, ma_attenuation_model attenuationModel)
{
    ma_sound_set_attenuation_model(pGroup, attenuationModel);
}

MA_API ma_attenuation_model ma_sound_group_get_attenuation_model(const ma_sound_group* pGroup)
{
    return ma_sound_get_attenuation_model(pGroup);
}

MA_API void ma_sound_group_set_positioning(ma_sound_group* pGroup, ma_positioning positioning)
{
    ma_sound_set_positioning(pGroup, positioning);
}

MA_API ma_positioning ma_sound_group_get_positioning(const ma_sound_group* pGroup)
{
    return ma_sound_get_positioning(pGroup);
}

MA_API void ma_sound_group_set_rolloff(ma_sound_group* pGroup, float rolloff)
{
    ma_sound_set_rolloff(pGroup, rolloff);
}

MA_API float ma_sound_group_get_rolloff(const ma_sound_group* pGroup)
{
    return ma_sound_get_rolloff(pGroup);
}

MA_API void ma_sound_group_set_min_gain(ma_sound_group* pGroup, float minGain)
{
    ma_sound_set_min_gain(pGroup, minGain);
}

MA_API float ma_sound_group_get_min_gain(const ma_sound_group* pGroup)
{
    return ma_sound_get_min_gain(pGroup);
}

MA_API void ma_sound_group_set_max_gain(ma_sound_group* pGroup, float maxGain)
{
    ma_sound_set_max_gain(pGroup, maxGain);
}

MA_API float ma_sound_group_get_max_gain(const ma_sound_group* pGroup)
{
    return ma_sound_get_max_gain(pGroup);
}

MA_API void ma_sound_group_set_min_distance(ma_sound_group* pGroup, float minDistance)
{
    ma_sound_set_min_distance(pGroup, minDistance);
}

MA_API float ma_sound_group_get_min_distance(const ma_sound_group* pGroup)
{
    return ma_sound_get_min_distance(pGroup);
}

MA_API void ma_sound_group_set_max_distance(ma_sound_group* pGroup, float maxDistance)
{
    ma_sound_set_max_distance(pGroup, maxDistance);
}

MA_API float ma_sound_group_get_max_distance(const ma_sound_group* pGroup)
{
    return ma_sound_get_max_distance(pGroup);
}

MA_API void ma_sound_group_set_cone(ma_sound_group* pGroup, float innerAngleInRadians, float outerAngleInRadians, float outerGain)
{
    ma_sound_set_cone(pGroup, innerAngleInRadians, outerAngleInRadians, outerGain);
}

MA_API void ma_sound_group_get_cone(const ma_sound_group* pGroup, float* pInnerAngleInRadians, float* pOuterAngleInRadians, float* pOuterGain)
{
    ma_sound_get_cone(pGroup, pInnerAngleInRadians, pOuterAngleInRadians, pOuterGain);
}

MA_API void ma_sound_group_set_doppler_factor(ma_sound_group* pGroup, float dopplerFactor)
{
    ma_sound_set_doppler_factor(pGroup, dopplerFactor);
}

MA_API float ma_sound_group_get_doppler_factor(const ma_sound_group* pGroup)
{
    return ma_sound_get_doppler_factor(pGroup);
}

MA_API void ma_sound_group_set_directional_attenuation_factor(ma_sound_group* pGroup, float directionalAttenuationFactor)
{
    ma_sound_set_directional_attenuation_factor(pGroup, directionalAttenuationFactor);
}

MA_API float ma_sound_group_get_directional_attenuation_factor(const ma_sound_group* pGroup)
{
    return ma_sound_get_directional_attenuation_factor(pGroup);
}

MA_API void ma_sound_group_set_fade_in_pcm_frames(ma_sound_group* pGroup, float volumeBeg, float volumeEnd, ma_uint64 fadeLengthInFrames)
{
    ma_sound_set_fade_in_pcm_frames(pGroup, volumeBeg, volumeEnd, fadeLengthInFrames);
}

MA_API void ma_sound_group_set_fade_in_milliseconds(ma_sound_group* pGroup, float volumeBeg, float volumeEnd, ma_uint64 fadeLengthInMilliseconds)
{
    ma_sound_set_fade_in_milliseconds(pGroup, volumeBeg, volumeEnd, fadeLengthInMilliseconds);
}

MA_API float ma_sound_group_get_current_fade_volume(ma_sound_group* pGroup)
{
    return ma_sound_get_current_fade_volume(pGroup);
}

MA_API void ma_sound_group_set_start_time_in_pcm_frames(ma_sound_group* pGroup, ma_uint64 absoluteGlobalTimeInFrames)
{
    ma_sound_set_start_time_in_pcm_frames(pGroup, absoluteGlobalTimeInFrames);
}

MA_API void ma_sound_group_set_start_time_in_milliseconds(ma_sound_group* pGroup, ma_uint64 absoluteGlobalTimeInMilliseconds)
{
    ma_sound_set_start_time_in_milliseconds(pGroup, absoluteGlobalTimeInMilliseconds);
}

MA_API void ma_sound_group_set_stop_time_in_pcm_frames(ma_sound_group* pGroup, ma_uint64 absoluteGlobalTimeInFrames)
{
    ma_sound_set_stop_time_in_pcm_frames(pGroup, absoluteGlobalTimeInFrames);
}

MA_API void ma_sound_group_set_stop_time_in_milliseconds(ma_sound_group* pGroup, ma_uint64 absoluteGlobalTimeInMilliseconds)
{
    ma_sound_set_stop_time_in_milliseconds(pGroup, absoluteGlobalTimeInMilliseconds);
}

MA_API ma_bool32 ma_sound_group_is_playing(const ma_sound_group* pGroup)
{
    return ma_sound_is_playing(pGroup);
}

MA_API ma_uint64 ma_sound_group_get_time_in_pcm_frames(const ma_sound_group* pGroup)
{
    return ma_sound_get_time_in_pcm_frames(pGroup);
}
#endif  /* MA_NO_ENGINE */
/* END SECTION: miniaudio_engine.c */



/**************************************************************************************************************************************************************
***************************************************************************************************************************************************************

Auto Generated
==============
All code below is auto-generated from a tool. This mostly consists of decoding backend implementations such as ma_dr_wav, ma_dr_flac, etc. If you find a bug in the
code below please report the bug to the respective repository for the relevant project (probably dr_libs).

***************************************************************************************************************************************************************
**************************************************************************************************************************************************************/
#if !defined(MA_NO_WAV) && (!defined(MA_NO_DECODING) || !defined(MA_NO_ENCODING))
#if !defined(MA_DR_WAV_IMPLEMENTATION)
/* dr_wav_c begin */
#ifndef ma_dr_wav_c
#define ma_dr_wav_c
#ifdef __MRC__
#pragma options opt off
#endif
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#ifndef MA_DR_WAV_NO_STDIO
#include <stdio.h>
#ifndef MA_DR_WAV_NO_WCHAR
#include <wchar.h>
#endif
#endif
#ifndef MA_DR_WAV_ASSERT
#include <assert.h>
#define MA_DR_WAV_ASSERT(expression)           assert(expression)
#endif
#ifndef MA_DR_WAV_MALLOC
#define MA_DR_WAV_MALLOC(sz)                   malloc((sz))
#endif
#ifndef MA_DR_WAV_REALLOC
#define MA_DR_WAV_REALLOC(p, sz)               realloc((p), (sz))
#endif
#ifndef MA_DR_WAV_FREE
#define MA_DR_WAV_FREE(p)                      free((p))
#endif
#ifndef MA_DR_WAV_COPY_MEMORY
#define MA_DR_WAV_COPY_MEMORY(dst, src, sz)    memcpy((dst), (src), (sz))
#endif
#ifndef MA_DR_WAV_ZERO_MEMORY
#define MA_DR_WAV_ZERO_MEMORY(p, sz)           memset((p), 0, (sz))
#endif
#ifndef MA_DR_WAV_ZERO_OBJECT
#define MA_DR_WAV_ZERO_OBJECT(p)               MA_DR_WAV_ZERO_MEMORY((p), sizeof(*p))
#endif
#define ma_dr_wav_countof(x)                   (sizeof(x) / sizeof(x[0]))
#define ma_dr_wav_align(x, a)                  ((((x) + (a) - 1) / (a)) * (a))
#define ma_dr_wav_min(a, b)                    (((a) < (b)) ? (a) : (b))
#define ma_dr_wav_max(a, b)                    (((a) > (b)) ? (a) : (b))
#define ma_dr_wav_clamp(x, lo, hi)             (ma_dr_wav_max((lo), ma_dr_wav_min((hi), (x))))
#define ma_dr_wav_offset_ptr(p, offset)        (((ma_uint8*)(p)) + (offset))
#define MA_DR_WAV_MAX_SIMD_VECTOR_SIZE         32
#define MA_DR_WAV_INT64_MIN ((ma_int64) ((ma_uint64)0x80000000 << 32))
#define MA_DR_WAV_INT64_MAX ((ma_int64)(((ma_uint64)0x7FFFFFFF << 32) | 0xFFFFFFFF))
#if defined(_MSC_VER) && _MSC_VER >= 1400
    #define MA_DR_WAV_HAS_BYTESWAP16_INTRINSIC
    #define MA_DR_WAV_HAS_BYTESWAP32_INTRINSIC
    #define MA_DR_WAV_HAS_BYTESWAP64_INTRINSIC
#elif defined(__clang__)
    #if defined(__has_builtin)
        #if __has_builtin(__builtin_bswap16)
            #define MA_DR_WAV_HAS_BYTESWAP16_INTRINSIC
        #endif
        #if __has_builtin(__builtin_bswap32)
            #define MA_DR_WAV_HAS_BYTESWAP32_INTRINSIC
        #endif
        #if __has_builtin(__builtin_bswap64)
            #define MA_DR_WAV_HAS_BYTESWAP64_INTRINSIC
        #endif
    #endif
#elif defined(__GNUC__)
    #if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
        #define MA_DR_WAV_HAS_BYTESWAP32_INTRINSIC
        #define MA_DR_WAV_HAS_BYTESWAP64_INTRINSIC
    #endif
    #if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
        #define MA_DR_WAV_HAS_BYTESWAP16_INTRINSIC
    #endif
#endif
MA_API void ma_dr_wav_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision)
{
    if (pMajor) {
        *pMajor = MA_DR_WAV_VERSION_MAJOR;
    }
    if (pMinor) {
        *pMinor = MA_DR_WAV_VERSION_MINOR;
    }
    if (pRevision) {
        *pRevision = MA_DR_WAV_VERSION_REVISION;
    }
}
MA_API const char* ma_dr_wav_version_string(void)
{
    return MA_DR_WAV_VERSION_STRING;
}
#ifndef MA_DR_WAV_MAX_SAMPLE_RATE
#define MA_DR_WAV_MAX_SAMPLE_RATE       384000
#endif
#ifndef MA_DR_WAV_MAX_CHANNELS
#define MA_DR_WAV_MAX_CHANNELS          256
#endif
#ifndef MA_DR_WAV_MAX_BITS_PER_SAMPLE
#define MA_DR_WAV_MAX_BITS_PER_SAMPLE   64
#endif
static const ma_uint8 ma_dr_wavGUID_W64_RIFF[16] = {0x72,0x69,0x66,0x66, 0x2E,0x91, 0xCF,0x11, 0xA5,0xD6, 0x28,0xDB,0x04,0xC1,0x00,0x00};
static const ma_uint8 ma_dr_wavGUID_W64_WAVE[16] = {0x77,0x61,0x76,0x65, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A};
static const ma_uint8 ma_dr_wavGUID_W64_FMT [16] = {0x66,0x6D,0x74,0x20, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A};
static const ma_uint8 ma_dr_wavGUID_W64_FACT[16] = {0x66,0x61,0x63,0x74, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A};
static const ma_uint8 ma_dr_wavGUID_W64_DATA[16] = {0x64,0x61,0x74,0x61, 0xF3,0xAC, 0xD3,0x11, 0x8C,0xD1, 0x00,0xC0,0x4F,0x8E,0xDB,0x8A};
static MA_INLINE int ma_dr_wav__is_little_endian(void)
{
#if defined(MA_X86) || defined(MA_X64)
    return MA_TRUE;
#elif defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN
    return MA_TRUE;
#else
    int n = 1;
    return (*(char*)&n) == 1;
#endif
}
static MA_INLINE void ma_dr_wav_bytes_to_guid(const ma_uint8* data, ma_uint8* guid)
{
    int i;
    for (i = 0; i < 16; ++i) {
        guid[i] = data[i];
    }
}
static MA_INLINE ma_uint16 ma_dr_wav__bswap16(ma_uint16 n)
{
#ifdef MA_DR_WAV_HAS_BYTESWAP16_INTRINSIC
    #if defined(_MSC_VER)
        return _byteswap_ushort(n);
    #elif defined(__GNUC__) || defined(__clang__)
        return __builtin_bswap16(n);
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & 0xFF00) >> 8) |
           ((n & 0x00FF) << 8);
#endif
}
static MA_INLINE ma_uint32 ma_dr_wav__bswap32(ma_uint32 n)
{
#ifdef MA_DR_WAV_HAS_BYTESWAP32_INTRINSIC
    #if defined(_MSC_VER)
        return _byteswap_ulong(n);
    #elif defined(__GNUC__) || defined(__clang__)
        #if defined(MA_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 6) && !defined(MA_64BIT)
            ma_uint32 r;
            __asm__ __volatile__ (
            #if defined(MA_64BIT)
                "rev %w[out], %w[in]" : [out]"=r"(r) : [in]"r"(n)
            #else
                "rev %[out], %[in]" : [out]"=r"(r) : [in]"r"(n)
            #endif
            );
            return r;
        #else
            return __builtin_bswap32(n);
        #endif
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & 0xFF000000) >> 24) |
           ((n & 0x00FF0000) >>  8) |
           ((n & 0x0000FF00) <<  8) |
           ((n & 0x000000FF) << 24);
#endif
}
static MA_INLINE ma_uint64 ma_dr_wav__bswap64(ma_uint64 n)
{
#ifdef MA_DR_WAV_HAS_BYTESWAP64_INTRINSIC
    #if defined(_MSC_VER)
        return _byteswap_uint64(n);
    #elif defined(__GNUC__) || defined(__clang__)
        return __builtin_bswap64(n);
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & ((ma_uint64)0xFF000000 << 32)) >> 56) |
           ((n & ((ma_uint64)0x00FF0000 << 32)) >> 40) |
           ((n & ((ma_uint64)0x0000FF00 << 32)) >> 24) |
           ((n & ((ma_uint64)0x000000FF << 32)) >>  8) |
           ((n & ((ma_uint64)0xFF000000      )) <<  8) |
           ((n & ((ma_uint64)0x00FF0000      )) << 24) |
           ((n & ((ma_uint64)0x0000FF00      )) << 40) |
           ((n & ((ma_uint64)0x000000FF      )) << 56);
#endif
}
static MA_INLINE ma_int16 ma_dr_wav__bswap_s16(ma_int16 n)
{
    return (ma_int16)ma_dr_wav__bswap16((ma_uint16)n);
}
static MA_INLINE void ma_dr_wav__bswap_samples_s16(ma_int16* pSamples, ma_uint64 sampleCount)
{
    ma_uint64 iSample;
    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamples[iSample] = ma_dr_wav__bswap_s16(pSamples[iSample]);
    }
}
static MA_INLINE void ma_dr_wav__bswap_s24(ma_uint8* p)
{
    ma_uint8 t;
    t = p[0];
    p[0] = p[2];
    p[2] = t;
}
static MA_INLINE void ma_dr_wav__bswap_samples_s24(ma_uint8* pSamples, ma_uint64 sampleCount)
{
    ma_uint64 iSample;
    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        ma_uint8* pSample = pSamples + (iSample*3);
        ma_dr_wav__bswap_s24(pSample);
    }
}
static MA_INLINE ma_int32 ma_dr_wav__bswap_s32(ma_int32 n)
{
    return (ma_int32)ma_dr_wav__bswap32((ma_uint32)n);
}
static MA_INLINE void ma_dr_wav__bswap_samples_s32(ma_int32* pSamples, ma_uint64 sampleCount)
{
    ma_uint64 iSample;
    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamples[iSample] = ma_dr_wav__bswap_s32(pSamples[iSample]);
    }
}
static MA_INLINE ma_int64 ma_dr_wav__bswap_s64(ma_int64 n)
{
    return (ma_int64)ma_dr_wav__bswap64((ma_uint64)n);
}
static MA_INLINE void ma_dr_wav__bswap_samples_s64(ma_int64* pSamples, ma_uint64 sampleCount)
{
    ma_uint64 iSample;
    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamples[iSample] = ma_dr_wav__bswap_s64(pSamples[iSample]);
    }
}
static MA_INLINE float ma_dr_wav__bswap_f32(float n)
{
    union {
        ma_uint32 i;
        float f;
    } x;
    x.f = n;
    x.i = ma_dr_wav__bswap32(x.i);
    return x.f;
}
static MA_INLINE void ma_dr_wav__bswap_samples_f32(float* pSamples, ma_uint64 sampleCount)
{
    ma_uint64 iSample;
    for (iSample = 0; iSample < sampleCount; iSample += 1) {
        pSamples[iSample] = ma_dr_wav__bswap_f32(pSamples[iSample]);
    }
}
static MA_INLINE void ma_dr_wav__bswap_samples(void* pSamples, ma_uint64 sampleCount, ma_uint32 bytesPerSample)
{
    switch (bytesPerSample)
    {
        case 1:
        {
        } break;
        case 2:
        {
            ma_dr_wav__bswap_samples_s16((ma_int16*)pSamples, sampleCount);
        } break;
        case 3:
        {
            ma_dr_wav__bswap_samples_s24((ma_uint8*)pSamples, sampleCount);
        } break;
        case 4:
        {
            ma_dr_wav__bswap_samples_s32((ma_int32*)pSamples, sampleCount);
        } break;
        case 8:
        {
            ma_dr_wav__bswap_samples_s64((ma_int64*)pSamples, sampleCount);
        } break;
        default:
        {
            MA_DR_WAV_ASSERT(MA_FALSE);
        } break;
    }
}
MA_PRIVATE MA_INLINE ma_bool32 ma_dr_wav_is_container_be(ma_dr_wav_container container)
{
    if (container == ma_dr_wav_container_rifx || container == ma_dr_wav_container_aiff) {
        return MA_TRUE;
    } else {
        return MA_FALSE;
    }
}
MA_PRIVATE MA_INLINE ma_uint16 ma_dr_wav_bytes_to_u16_le(const ma_uint8* data)
{
    return ((ma_uint16)data[0] << 0) | ((ma_uint16)data[1] << 8);
}
MA_PRIVATE MA_INLINE ma_uint16 ma_dr_wav_bytes_to_u16_be(const ma_uint8* data)
{
    return ((ma_uint16)data[1] << 0) | ((ma_uint16)data[0] << 8);
}
MA_PRIVATE MA_INLINE ma_uint16 ma_dr_wav_bytes_to_u16_ex(const ma_uint8* data, ma_dr_wav_container container)
{
    if (ma_dr_wav_is_container_be(container)) {
        return ma_dr_wav_bytes_to_u16_be(data);
    } else {
        return ma_dr_wav_bytes_to_u16_le(data);
    }
}
MA_PRIVATE MA_INLINE ma_uint32 ma_dr_wav_bytes_to_u32_le(const ma_uint8* data)
{
    return ((ma_uint32)data[0] << 0) | ((ma_uint32)data[1] << 8) | ((ma_uint32)data[2] << 16) | ((ma_uint32)data[3] << 24);
}
MA_PRIVATE MA_INLINE ma_uint32 ma_dr_wav_bytes_to_u32_be(const ma_uint8* data)
{
    return ((ma_uint32)data[3] << 0) | ((ma_uint32)data[2] << 8) | ((ma_uint32)data[1] << 16) | ((ma_uint32)data[0] << 24);
}
MA_PRIVATE MA_INLINE ma_uint32 ma_dr_wav_bytes_to_u32_ex(const ma_uint8* data, ma_dr_wav_container container)
{
    if (ma_dr_wav_is_container_be(container)) {
        return ma_dr_wav_bytes_to_u32_be(data);
    } else {
        return ma_dr_wav_bytes_to_u32_le(data);
    }
}
MA_PRIVATE ma_int64 ma_dr_wav_aiff_extented_to_s64(const ma_uint8* data)
{
    ma_uint32 exponent = ((ma_uint32)data[0] << 8) | data[1];
    ma_uint64 hi = ((ma_uint64)data[2] << 24) | ((ma_uint64)data[3] << 16) | ((ma_uint64)data[4] <<  8) | ((ma_uint64)data[5] <<  0);
    ma_uint64 lo = ((ma_uint64)data[6] << 24) | ((ma_uint64)data[7] << 16) | ((ma_uint64)data[8] <<  8) | ((ma_uint64)data[9] <<  0);
    ma_uint64 significand = (hi << 32) | lo;
    int sign = exponent >> 15;
    exponent &= 0x7FFF;
    if (exponent == 0 && significand == 0) {
        return 0;
    } else if (exponent == 0x7FFF) {
        return sign ? MA_DR_WAV_INT64_MIN : MA_DR_WAV_INT64_MAX;
    }
    exponent -= 16383;
    if (exponent > 63) {
        return sign ? MA_DR_WAV_INT64_MIN : MA_DR_WAV_INT64_MAX;
    } else if (exponent < 1) {
        return 0;
    }
    significand >>= (63 - exponent);
    if (sign) {
        return -(ma_int64)significand;
    } else {
        return  (ma_int64)significand;
    }
}
MA_PRIVATE void* ma_dr_wav__malloc_default(size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_DR_WAV_MALLOC(sz);
}
MA_PRIVATE void* ma_dr_wav__realloc_default(void* p, size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_DR_WAV_REALLOC(p, sz);
}
MA_PRIVATE void ma_dr_wav__free_default(void* p, void* pUserData)
{
    (void)pUserData;
    MA_DR_WAV_FREE(p);
}
MA_PRIVATE void* ma_dr_wav__malloc_from_callbacks(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks == NULL) {
        return NULL;
    }
    if (pAllocationCallbacks->onMalloc != NULL) {
        return pAllocationCallbacks->onMalloc(sz, pAllocationCallbacks->pUserData);
    }
    if (pAllocationCallbacks->onRealloc != NULL) {
        return pAllocationCallbacks->onRealloc(NULL, sz, pAllocationCallbacks->pUserData);
    }
    return NULL;
}
MA_PRIVATE void* ma_dr_wav__realloc_from_callbacks(void* p, size_t szNew, size_t szOld, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks == NULL) {
        return NULL;
    }
    if (pAllocationCallbacks->onRealloc != NULL) {
        return pAllocationCallbacks->onRealloc(p, szNew, pAllocationCallbacks->pUserData);
    }
    if (pAllocationCallbacks->onMalloc != NULL && pAllocationCallbacks->onFree != NULL) {
        void* p2;
        p2 = pAllocationCallbacks->onMalloc(szNew, pAllocationCallbacks->pUserData);
        if (p2 == NULL) {
            return NULL;
        }
        if (p != NULL) {
            MA_DR_WAV_COPY_MEMORY(p2, p, szOld);
            pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
        }
        return p2;
    }
    return NULL;
}
MA_PRIVATE void ma_dr_wav__free_from_callbacks(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (p == NULL || pAllocationCallbacks == NULL) {
        return;
    }
    if (pAllocationCallbacks->onFree != NULL) {
        pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
    }
}
MA_PRIVATE ma_allocation_callbacks ma_dr_wav_copy_allocation_callbacks_or_defaults(const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        return *pAllocationCallbacks;
    } else {
        ma_allocation_callbacks allocationCallbacks;
        allocationCallbacks.pUserData = NULL;
        allocationCallbacks.onMalloc  = ma_dr_wav__malloc_default;
        allocationCallbacks.onRealloc = ma_dr_wav__realloc_default;
        allocationCallbacks.onFree    = ma_dr_wav__free_default;
        return allocationCallbacks;
    }
}
static MA_INLINE ma_bool32 ma_dr_wav__is_compressed_format_tag(ma_uint16 formatTag)
{
    return
        formatTag == MA_DR_WAVE_FORMAT_ADPCM ||
        formatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM;
}
MA_PRIVATE unsigned int ma_dr_wav__chunk_padding_size_riff(ma_uint64 chunkSize)
{
    return (unsigned int)(chunkSize % 2);
}
MA_PRIVATE unsigned int ma_dr_wav__chunk_padding_size_w64(ma_uint64 chunkSize)
{
    return (unsigned int)(chunkSize % 8);
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__msadpcm(ma_dr_wav* pWav, ma_uint64 samplesToRead, ma_int16* pBufferOut);
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__ima(ma_dr_wav* pWav, ma_uint64 samplesToRead, ma_int16* pBufferOut);
MA_PRIVATE ma_bool32 ma_dr_wav_init_write__internal(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount);
MA_PRIVATE ma_result ma_dr_wav__read_chunk_header(ma_dr_wav_read_proc onRead, void* pUserData, ma_dr_wav_container container, ma_uint64* pRunningBytesReadOut, ma_dr_wav_chunk_header* pHeaderOut)
{
    if (container == ma_dr_wav_container_riff || container == ma_dr_wav_container_rifx || container == ma_dr_wav_container_rf64 || container == ma_dr_wav_container_aiff) {
        ma_uint8 sizeInBytes[4];
        if (onRead(pUserData, pHeaderOut->id.fourcc, 4) != 4) {
            return MA_AT_END;
        }
        if (onRead(pUserData, sizeInBytes, 4) != 4) {
            return MA_INVALID_FILE;
        }
        pHeaderOut->sizeInBytes = ma_dr_wav_bytes_to_u32_ex(sizeInBytes, container);
        pHeaderOut->paddingSize = ma_dr_wav__chunk_padding_size_riff(pHeaderOut->sizeInBytes);
        *pRunningBytesReadOut += 8;
    } else if (container == ma_dr_wav_container_w64) {
        ma_uint8 sizeInBytes[8];
        if (onRead(pUserData, pHeaderOut->id.guid, 16) != 16) {
            return MA_AT_END;
        }
        if (onRead(pUserData, sizeInBytes, 8) != 8) {
            return MA_INVALID_FILE;
        }
        pHeaderOut->sizeInBytes = ma_dr_wav_bytes_to_u64(sizeInBytes) - 24;
        pHeaderOut->paddingSize = ma_dr_wav__chunk_padding_size_w64(pHeaderOut->sizeInBytes);
        *pRunningBytesReadOut += 24;
    } else {
        return MA_INVALID_FILE;
    }
    return MA_SUCCESS;
}
MA_PRIVATE ma_bool32 ma_dr_wav__seek_forward(ma_dr_wav_seek_proc onSeek, ma_uint64 offset, void* pUserData)
{
    ma_uint64 bytesRemainingToSeek = offset;
    while (bytesRemainingToSeek > 0) {
        if (bytesRemainingToSeek > 0x7FFFFFFF) {
            if (!onSeek(pUserData, 0x7FFFFFFF, ma_dr_wav_seek_origin_current)) {
                return MA_FALSE;
            }
            bytesRemainingToSeek -= 0x7FFFFFFF;
        } else {
            if (!onSeek(pUserData, (int)bytesRemainingToSeek, ma_dr_wav_seek_origin_current)) {
                return MA_FALSE;
            }
            bytesRemainingToSeek = 0;
        }
    }
    return MA_TRUE;
}
MA_PRIVATE ma_bool32 ma_dr_wav__seek_from_start(ma_dr_wav_seek_proc onSeek, ma_uint64 offset, void* pUserData)
{
    if (offset <= 0x7FFFFFFF) {
        return onSeek(pUserData, (int)offset, ma_dr_wav_seek_origin_start);
    }
    if (!onSeek(pUserData, 0x7FFFFFFF, ma_dr_wav_seek_origin_start)) {
        return MA_FALSE;
    }
    offset -= 0x7FFFFFFF;
    for (;;) {
        if (offset <= 0x7FFFFFFF) {
            return onSeek(pUserData, (int)offset, ma_dr_wav_seek_origin_current);
        }
        if (!onSeek(pUserData, 0x7FFFFFFF, ma_dr_wav_seek_origin_current)) {
            return MA_FALSE;
        }
        offset -= 0x7FFFFFFF;
    }
}
MA_PRIVATE size_t ma_dr_wav__on_read(ma_dr_wav_read_proc onRead, void* pUserData, void* pBufferOut, size_t bytesToRead, ma_uint64* pCursor)
{
    size_t bytesRead;
    MA_DR_WAV_ASSERT(onRead != NULL);
    MA_DR_WAV_ASSERT(pCursor != NULL);
    bytesRead = onRead(pUserData, pBufferOut, bytesToRead);
    *pCursor += bytesRead;
    return bytesRead;
}
#if 0
MA_PRIVATE ma_bool32 ma_dr_wav__on_seek(ma_dr_wav_seek_proc onSeek, void* pUserData, int offset, ma_dr_wav_seek_origin origin, ma_uint64* pCursor)
{
    MA_DR_WAV_ASSERT(onSeek != NULL);
    MA_DR_WAV_ASSERT(pCursor != NULL);
    if (!onSeek(pUserData, offset, origin)) {
        return MA_FALSE;
    }
    if (origin == ma_dr_wav_seek_origin_start) {
        *pCursor = offset;
    } else {
        *pCursor += offset;
    }
    return MA_TRUE;
}
#endif
#define MA_DR_WAV_SMPL_BYTES                    36
#define MA_DR_WAV_SMPL_LOOP_BYTES               24
#define MA_DR_WAV_INST_BYTES                    7
#define MA_DR_WAV_ACID_BYTES                    24
#define MA_DR_WAV_CUE_BYTES                     4
#define MA_DR_WAV_BEXT_BYTES                    602
#define MA_DR_WAV_BEXT_DESCRIPTION_BYTES        256
#define MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES    32
#define MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES     32
#define MA_DR_WAV_BEXT_RESERVED_BYTES           180
#define MA_DR_WAV_BEXT_UMID_BYTES               64
#define MA_DR_WAV_CUE_POINT_BYTES               24
#define MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES      4
#define MA_DR_WAV_LIST_LABELLED_TEXT_BYTES      20
#define MA_DR_WAV_METADATA_ALIGNMENT            8
typedef enum
{
    ma_dr_wav__metadata_parser_stage_count,
    ma_dr_wav__metadata_parser_stage_read
} ma_dr_wav__metadata_parser_stage;
typedef struct
{
    ma_dr_wav_read_proc onRead;
    ma_dr_wav_seek_proc onSeek;
    void *pReadSeekUserData;
    ma_dr_wav__metadata_parser_stage stage;
    ma_dr_wav_metadata *pMetadata;
    ma_uint32 metadataCount;
    ma_uint8 *pData;
    ma_uint8 *pDataCursor;
    ma_uint64 metadataCursor;
    ma_uint64 extraCapacity;
} ma_dr_wav__metadata_parser;
MA_PRIVATE size_t ma_dr_wav__metadata_memory_capacity(ma_dr_wav__metadata_parser* pParser)
{
    ma_uint64 cap = sizeof(ma_dr_wav_metadata) * (ma_uint64)pParser->metadataCount + pParser->extraCapacity;
    if (cap > MA_SIZE_MAX) {
        return 0;
    }
    return (size_t)cap;
}
MA_PRIVATE ma_uint8* ma_dr_wav__metadata_get_memory(ma_dr_wav__metadata_parser* pParser, size_t size, size_t align)
{
    ma_uint8* pResult;
    if (align) {
        ma_uintptr modulo = (ma_uintptr)pParser->pDataCursor % align;
        if (modulo != 0) {
            pParser->pDataCursor += align - modulo;
        }
    }
    pResult = pParser->pDataCursor;
    MA_DR_WAV_ASSERT((pResult + size) <= (pParser->pData + ma_dr_wav__metadata_memory_capacity(pParser)));
    pParser->pDataCursor += size;
    return pResult;
}
MA_PRIVATE void ma_dr_wav__metadata_request_extra_memory_for_stage_2(ma_dr_wav__metadata_parser* pParser, size_t bytes, size_t align)
{
    size_t extra = bytes + (align ? (align - 1) : 0);
    pParser->extraCapacity += extra;
}
MA_PRIVATE ma_result ma_dr_wav__metadata_alloc(ma_dr_wav__metadata_parser* pParser, ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pParser->extraCapacity != 0 || pParser->metadataCount != 0) {
        pAllocationCallbacks->onFree(pParser->pData, pAllocationCallbacks->pUserData);
        pParser->pData = (ma_uint8*)pAllocationCallbacks->onMalloc(ma_dr_wav__metadata_memory_capacity(pParser), pAllocationCallbacks->pUserData);
        pParser->pDataCursor = pParser->pData;
        if (pParser->pData == NULL) {
            return MA_OUT_OF_MEMORY;
        }
        pParser->pMetadata = (ma_dr_wav_metadata*)ma_dr_wav__metadata_get_memory(pParser, sizeof(ma_dr_wav_metadata) * pParser->metadataCount, 1);
        pParser->metadataCursor = 0;
    }
    return MA_SUCCESS;
}
MA_PRIVATE size_t ma_dr_wav__metadata_parser_read(ma_dr_wav__metadata_parser* pParser, void* pBufferOut, size_t bytesToRead, ma_uint64* pCursor)
{
    if (pCursor != NULL) {
        return ma_dr_wav__on_read(pParser->onRead, pParser->pReadSeekUserData, pBufferOut, bytesToRead, pCursor);
    } else {
        return pParser->onRead(pParser->pReadSeekUserData, pBufferOut, bytesToRead);
    }
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_smpl_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, const ma_dr_wav_chunk_header* pChunkHeader, ma_dr_wav_metadata* pMetadata)
{
    ma_uint8 smplHeaderData[MA_DR_WAV_SMPL_BYTES];
    ma_uint64 totalBytesRead = 0;
    size_t bytesJustRead;
    if (pMetadata == NULL) {
        return 0;
    }
    bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, smplHeaderData, sizeof(smplHeaderData), &totalBytesRead);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    MA_DR_WAV_ASSERT(pChunkHeader != NULL);
    if (pMetadata != NULL && bytesJustRead == sizeof(smplHeaderData)) {
        ma_uint32 iSampleLoop;
        pMetadata->type                                     = ma_dr_wav_metadata_type_smpl;
        pMetadata->data.smpl.manufacturerId                 = ma_dr_wav_bytes_to_u32(smplHeaderData + 0);
        pMetadata->data.smpl.productId                      = ma_dr_wav_bytes_to_u32(smplHeaderData + 4);
        pMetadata->data.smpl.samplePeriodNanoseconds        = ma_dr_wav_bytes_to_u32(smplHeaderData + 8);
        pMetadata->data.smpl.midiUnityNote                  = ma_dr_wav_bytes_to_u32(smplHeaderData + 12);
        pMetadata->data.smpl.midiPitchFraction              = ma_dr_wav_bytes_to_u32(smplHeaderData + 16);
        pMetadata->data.smpl.smpteFormat                    = ma_dr_wav_bytes_to_u32(smplHeaderData + 20);
        pMetadata->data.smpl.smpteOffset                    = ma_dr_wav_bytes_to_u32(smplHeaderData + 24);
        pMetadata->data.smpl.sampleLoopCount                = ma_dr_wav_bytes_to_u32(smplHeaderData + 28);
        pMetadata->data.smpl.samplerSpecificDataSizeInBytes = ma_dr_wav_bytes_to_u32(smplHeaderData + 32);
        if (pMetadata->data.smpl.sampleLoopCount == (pChunkHeader->sizeInBytes - MA_DR_WAV_SMPL_BYTES) / MA_DR_WAV_SMPL_LOOP_BYTES) {
            pMetadata->data.smpl.pLoops = (ma_dr_wav_smpl_loop*)ma_dr_wav__metadata_get_memory(pParser, sizeof(ma_dr_wav_smpl_loop) * pMetadata->data.smpl.sampleLoopCount, MA_DR_WAV_METADATA_ALIGNMENT);
            for (iSampleLoop = 0; iSampleLoop < pMetadata->data.smpl.sampleLoopCount; ++iSampleLoop) {
                ma_uint8 smplLoopData[MA_DR_WAV_SMPL_LOOP_BYTES];
                bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, smplLoopData, sizeof(smplLoopData), &totalBytesRead);
                if (bytesJustRead == sizeof(smplLoopData)) {
                    pMetadata->data.smpl.pLoops[iSampleLoop].cuePointId            = ma_dr_wav_bytes_to_u32(smplLoopData + 0);
                    pMetadata->data.smpl.pLoops[iSampleLoop].type                  = ma_dr_wav_bytes_to_u32(smplLoopData + 4);
                    pMetadata->data.smpl.pLoops[iSampleLoop].firstSampleByteOffset = ma_dr_wav_bytes_to_u32(smplLoopData + 8);
                    pMetadata->data.smpl.pLoops[iSampleLoop].lastSampleByteOffset  = ma_dr_wav_bytes_to_u32(smplLoopData + 12);
                    pMetadata->data.smpl.pLoops[iSampleLoop].sampleFraction        = ma_dr_wav_bytes_to_u32(smplLoopData + 16);
                    pMetadata->data.smpl.pLoops[iSampleLoop].playCount             = ma_dr_wav_bytes_to_u32(smplLoopData + 20);
                } else {
                    break;
                }
            }
            if (pMetadata->data.smpl.samplerSpecificDataSizeInBytes > 0) {
                pMetadata->data.smpl.pSamplerSpecificData = ma_dr_wav__metadata_get_memory(pParser, pMetadata->data.smpl.samplerSpecificDataSizeInBytes, 1);
                MA_DR_WAV_ASSERT(pMetadata->data.smpl.pSamplerSpecificData != NULL);
                ma_dr_wav__metadata_parser_read(pParser, pMetadata->data.smpl.pSamplerSpecificData, pMetadata->data.smpl.samplerSpecificDataSizeInBytes, &totalBytesRead);
            }
        }
    }
    return totalBytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_cue_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, const ma_dr_wav_chunk_header* pChunkHeader, ma_dr_wav_metadata* pMetadata)
{
    ma_uint8 cueHeaderSectionData[MA_DR_WAV_CUE_BYTES];
    ma_uint64 totalBytesRead = 0;
    size_t bytesJustRead;
    if (pMetadata == NULL) {
        return 0;
    }
    bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, cueHeaderSectionData, sizeof(cueHeaderSectionData), &totalBytesRead);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    if (bytesJustRead == sizeof(cueHeaderSectionData)) {
        pMetadata->type                   = ma_dr_wav_metadata_type_cue;
        pMetadata->data.cue.cuePointCount = ma_dr_wav_bytes_to_u32(cueHeaderSectionData);
        if (pMetadata->data.cue.cuePointCount == (pChunkHeader->sizeInBytes - MA_DR_WAV_CUE_BYTES) / MA_DR_WAV_CUE_POINT_BYTES) {
            pMetadata->data.cue.pCuePoints    = (ma_dr_wav_cue_point*)ma_dr_wav__metadata_get_memory(pParser, sizeof(ma_dr_wav_cue_point) * pMetadata->data.cue.cuePointCount, MA_DR_WAV_METADATA_ALIGNMENT);
            MA_DR_WAV_ASSERT(pMetadata->data.cue.pCuePoints != NULL);
            if (pMetadata->data.cue.cuePointCount > 0) {
                ma_uint32 iCuePoint;
                for (iCuePoint = 0; iCuePoint < pMetadata->data.cue.cuePointCount; ++iCuePoint) {
                    ma_uint8 cuePointData[MA_DR_WAV_CUE_POINT_BYTES];
                    bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, cuePointData, sizeof(cuePointData), &totalBytesRead);
                    if (bytesJustRead == sizeof(cuePointData)) {
                        pMetadata->data.cue.pCuePoints[iCuePoint].id                = ma_dr_wav_bytes_to_u32(cuePointData + 0);
                        pMetadata->data.cue.pCuePoints[iCuePoint].playOrderPosition = ma_dr_wav_bytes_to_u32(cuePointData + 4);
                        pMetadata->data.cue.pCuePoints[iCuePoint].dataChunkId[0]    = cuePointData[8];
                        pMetadata->data.cue.pCuePoints[iCuePoint].dataChunkId[1]    = cuePointData[9];
                        pMetadata->data.cue.pCuePoints[iCuePoint].dataChunkId[2]    = cuePointData[10];
                        pMetadata->data.cue.pCuePoints[iCuePoint].dataChunkId[3]    = cuePointData[11];
                        pMetadata->data.cue.pCuePoints[iCuePoint].chunkStart        = ma_dr_wav_bytes_to_u32(cuePointData + 12);
                        pMetadata->data.cue.pCuePoints[iCuePoint].blockStart        = ma_dr_wav_bytes_to_u32(cuePointData + 16);
                        pMetadata->data.cue.pCuePoints[iCuePoint].sampleByteOffset  = ma_dr_wav_bytes_to_u32(cuePointData + 20);
                    } else {
                        break;
                    }
                }
            }
        }
    }
    return totalBytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_inst_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, ma_dr_wav_metadata* pMetadata)
{
    ma_uint8 instData[MA_DR_WAV_INST_BYTES];
    ma_uint64 bytesRead;
    if (pMetadata == NULL) {
        return 0;
    }
    bytesRead = ma_dr_wav__metadata_parser_read(pParser, instData, sizeof(instData), NULL);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    if (bytesRead == sizeof(instData)) {
        pMetadata->type                    = ma_dr_wav_metadata_type_inst;
        pMetadata->data.inst.midiUnityNote = (ma_int8)instData[0];
        pMetadata->data.inst.fineTuneCents = (ma_int8)instData[1];
        pMetadata->data.inst.gainDecibels  = (ma_int8)instData[2];
        pMetadata->data.inst.lowNote       = (ma_int8)instData[3];
        pMetadata->data.inst.highNote      = (ma_int8)instData[4];
        pMetadata->data.inst.lowVelocity   = (ma_int8)instData[5];
        pMetadata->data.inst.highVelocity  = (ma_int8)instData[6];
    }
    return bytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_acid_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, ma_dr_wav_metadata* pMetadata)
{
    ma_uint8 acidData[MA_DR_WAV_ACID_BYTES];
    ma_uint64 bytesRead;
    if (pMetadata == NULL) {
        return 0;
    }
    bytesRead = ma_dr_wav__metadata_parser_read(pParser, acidData, sizeof(acidData), NULL);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    if (bytesRead == sizeof(acidData)) {
        pMetadata->type                       = ma_dr_wav_metadata_type_acid;
        pMetadata->data.acid.flags            = ma_dr_wav_bytes_to_u32(acidData + 0);
        pMetadata->data.acid.midiUnityNote    = ma_dr_wav_bytes_to_u16(acidData + 4);
        pMetadata->data.acid.reserved1        = ma_dr_wav_bytes_to_u16(acidData + 6);
        pMetadata->data.acid.reserved2        = ma_dr_wav_bytes_to_f32(acidData + 8);
        pMetadata->data.acid.numBeats         = ma_dr_wav_bytes_to_u32(acidData + 12);
        pMetadata->data.acid.meterDenominator = ma_dr_wav_bytes_to_u16(acidData + 16);
        pMetadata->data.acid.meterNumerator   = ma_dr_wav_bytes_to_u16(acidData + 18);
        pMetadata->data.acid.tempo            = ma_dr_wav_bytes_to_f32(acidData + 20);
    }
    return bytesRead;
}
MA_PRIVATE size_t ma_dr_wav__strlen(const char* str)
{
    size_t result = 0;
    while (*str++) {
        result += 1;
    }
    return result;
}
MA_PRIVATE size_t ma_dr_wav__strlen_clamped(const char* str, size_t maxToRead)
{
    size_t result = 0;
    while (*str++ && result < maxToRead) {
        result += 1;
    }
    return result;
}
MA_PRIVATE char* ma_dr_wav__metadata_copy_string(ma_dr_wav__metadata_parser* pParser, const char* str, size_t maxToRead)
{
    size_t len = ma_dr_wav__strlen_clamped(str, maxToRead);
    if (len) {
        char* result = (char*)ma_dr_wav__metadata_get_memory(pParser, len + 1, 1);
        MA_DR_WAV_ASSERT(result != NULL);
        MA_DR_WAV_COPY_MEMORY(result, str, len);
        result[len] = '\0';
        return result;
    } else {
        return NULL;
    }
}
typedef struct
{
    const void* pBuffer;
    size_t sizeInBytes;
    size_t cursor;
} ma_dr_wav_buffer_reader;
MA_PRIVATE ma_result ma_dr_wav_buffer_reader_init(const void* pBuffer, size_t sizeInBytes, ma_dr_wav_buffer_reader* pReader)
{
    MA_DR_WAV_ASSERT(pBuffer != NULL);
    MA_DR_WAV_ASSERT(pReader != NULL);
    MA_DR_WAV_ZERO_OBJECT(pReader);
    pReader->pBuffer     = pBuffer;
    pReader->sizeInBytes = sizeInBytes;
    pReader->cursor      = 0;
    return MA_SUCCESS;
}
MA_PRIVATE const void* ma_dr_wav_buffer_reader_ptr(const ma_dr_wav_buffer_reader* pReader)
{
    MA_DR_WAV_ASSERT(pReader != NULL);
    return ma_dr_wav_offset_ptr(pReader->pBuffer, pReader->cursor);
}
MA_PRIVATE ma_result ma_dr_wav_buffer_reader_seek(ma_dr_wav_buffer_reader* pReader, size_t bytesToSeek)
{
    MA_DR_WAV_ASSERT(pReader != NULL);
    if (pReader->cursor + bytesToSeek > pReader->sizeInBytes) {
        return MA_BAD_SEEK;
    }
    pReader->cursor += bytesToSeek;
    return MA_SUCCESS;
}
MA_PRIVATE ma_result ma_dr_wav_buffer_reader_read(ma_dr_wav_buffer_reader* pReader, void* pDst, size_t bytesToRead, size_t* pBytesRead)
{
    ma_result result = MA_SUCCESS;
    size_t bytesRemaining;
    MA_DR_WAV_ASSERT(pReader != NULL);
    if (pBytesRead != NULL) {
        *pBytesRead = 0;
    }
    bytesRemaining = (pReader->sizeInBytes - pReader->cursor);
    if (bytesToRead > bytesRemaining) {
        bytesToRead = bytesRemaining;
    }
    if (pDst == NULL) {
        result = ma_dr_wav_buffer_reader_seek(pReader, bytesToRead);
    } else {
        MA_DR_WAV_COPY_MEMORY(pDst, ma_dr_wav_buffer_reader_ptr(pReader), bytesToRead);
        pReader->cursor += bytesToRead;
    }
    MA_DR_WAV_ASSERT(pReader->cursor <= pReader->sizeInBytes);
    if (result == MA_SUCCESS) {
        if (pBytesRead != NULL) {
            *pBytesRead = bytesToRead;
        }
    }
    return MA_SUCCESS;
}
MA_PRIVATE ma_result ma_dr_wav_buffer_reader_read_u16(ma_dr_wav_buffer_reader* pReader, ma_uint16* pDst)
{
    ma_result result;
    size_t bytesRead;
    ma_uint8 data[2];
    MA_DR_WAV_ASSERT(pReader != NULL);
    MA_DR_WAV_ASSERT(pDst != NULL);
    *pDst = 0;
    result = ma_dr_wav_buffer_reader_read(pReader, data, sizeof(*pDst), &bytesRead);
    if (result != MA_SUCCESS || bytesRead != sizeof(*pDst)) {
        return result;
    }
    *pDst = ma_dr_wav_bytes_to_u16(data);
    return MA_SUCCESS;
}
MA_PRIVATE ma_result ma_dr_wav_buffer_reader_read_u32(ma_dr_wav_buffer_reader* pReader, ma_uint32* pDst)
{
    ma_result result;
    size_t bytesRead;
    ma_uint8 data[4];
    MA_DR_WAV_ASSERT(pReader != NULL);
    MA_DR_WAV_ASSERT(pDst != NULL);
    *pDst = 0;
    result = ma_dr_wav_buffer_reader_read(pReader, data, sizeof(*pDst), &bytesRead);
    if (result != MA_SUCCESS || bytesRead != sizeof(*pDst)) {
        return result;
    }
    *pDst = ma_dr_wav_bytes_to_u32(data);
    return MA_SUCCESS;
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_bext_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, ma_dr_wav_metadata* pMetadata, ma_uint64 chunkSize)
{
    ma_uint8 bextData[MA_DR_WAV_BEXT_BYTES];
    size_t bytesRead = ma_dr_wav__metadata_parser_read(pParser, bextData, sizeof(bextData), NULL);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    if (bytesRead == sizeof(bextData)) {
        ma_dr_wav_buffer_reader reader;
        ma_uint32 timeReferenceLow;
        ma_uint32 timeReferenceHigh;
        size_t extraBytes;
        pMetadata->type = ma_dr_wav_metadata_type_bext;
        if (ma_dr_wav_buffer_reader_init(bextData, bytesRead, &reader) == MA_SUCCESS) {
            pMetadata->data.bext.pDescription = ma_dr_wav__metadata_copy_string(pParser, (const char*)ma_dr_wav_buffer_reader_ptr(&reader), MA_DR_WAV_BEXT_DESCRIPTION_BYTES);
            ma_dr_wav_buffer_reader_seek(&reader, MA_DR_WAV_BEXT_DESCRIPTION_BYTES);
            pMetadata->data.bext.pOriginatorName = ma_dr_wav__metadata_copy_string(pParser, (const char*)ma_dr_wav_buffer_reader_ptr(&reader), MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES);
            ma_dr_wav_buffer_reader_seek(&reader, MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES);
            pMetadata->data.bext.pOriginatorReference = ma_dr_wav__metadata_copy_string(pParser, (const char*)ma_dr_wav_buffer_reader_ptr(&reader), MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES);
            ma_dr_wav_buffer_reader_seek(&reader, MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES);
            ma_dr_wav_buffer_reader_read(&reader, pMetadata->data.bext.pOriginationDate, sizeof(pMetadata->data.bext.pOriginationDate), NULL);
            ma_dr_wav_buffer_reader_read(&reader, pMetadata->data.bext.pOriginationTime, sizeof(pMetadata->data.bext.pOriginationTime), NULL);
            ma_dr_wav_buffer_reader_read_u32(&reader, &timeReferenceLow);
            ma_dr_wav_buffer_reader_read_u32(&reader, &timeReferenceHigh);
            pMetadata->data.bext.timeReference = ((ma_uint64)timeReferenceHigh << 32) + timeReferenceLow;
            ma_dr_wav_buffer_reader_read_u16(&reader, &pMetadata->data.bext.version);
            pMetadata->data.bext.pUMID = ma_dr_wav__metadata_get_memory(pParser, MA_DR_WAV_BEXT_UMID_BYTES, 1);
            ma_dr_wav_buffer_reader_read(&reader, pMetadata->data.bext.pUMID, MA_DR_WAV_BEXT_UMID_BYTES, NULL);
            ma_dr_wav_buffer_reader_read_u16(&reader, &pMetadata->data.bext.loudnessValue);
            ma_dr_wav_buffer_reader_read_u16(&reader, &pMetadata->data.bext.loudnessRange);
            ma_dr_wav_buffer_reader_read_u16(&reader, &pMetadata->data.bext.maxTruePeakLevel);
            ma_dr_wav_buffer_reader_read_u16(&reader, &pMetadata->data.bext.maxMomentaryLoudness);
            ma_dr_wav_buffer_reader_read_u16(&reader, &pMetadata->data.bext.maxShortTermLoudness);
            MA_DR_WAV_ASSERT((ma_dr_wav_offset_ptr(ma_dr_wav_buffer_reader_ptr(&reader), MA_DR_WAV_BEXT_RESERVED_BYTES)) == (bextData + MA_DR_WAV_BEXT_BYTES));
            extraBytes = (size_t)(chunkSize - MA_DR_WAV_BEXT_BYTES);
            if (extraBytes > 0) {
                pMetadata->data.bext.pCodingHistory = (char*)ma_dr_wav__metadata_get_memory(pParser, extraBytes + 1, 1);
                MA_DR_WAV_ASSERT(pMetadata->data.bext.pCodingHistory != NULL);
                bytesRead += ma_dr_wav__metadata_parser_read(pParser, pMetadata->data.bext.pCodingHistory, extraBytes, NULL);
                pMetadata->data.bext.codingHistorySize = (ma_uint32)ma_dr_wav__strlen(pMetadata->data.bext.pCodingHistory);
            } else {
                pMetadata->data.bext.pCodingHistory    = NULL;
                pMetadata->data.bext.codingHistorySize = 0;
            }
        }
    }
    return bytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_list_label_or_note_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, ma_dr_wav_metadata* pMetadata, ma_uint64 chunkSize, ma_dr_wav_metadata_type type)
{
    ma_uint8 cueIDBuffer[MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES];
    ma_uint64 totalBytesRead = 0;
    size_t bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, cueIDBuffer, sizeof(cueIDBuffer), &totalBytesRead);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    if (bytesJustRead == sizeof(cueIDBuffer)) {
        ma_uint32 sizeIncludingNullTerminator;
        pMetadata->type = type;
        pMetadata->data.labelOrNote.cuePointId = ma_dr_wav_bytes_to_u32(cueIDBuffer);
        sizeIncludingNullTerminator = (ma_uint32)chunkSize - MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES;
        if (sizeIncludingNullTerminator > 0) {
            pMetadata->data.labelOrNote.stringLength = sizeIncludingNullTerminator - 1;
            pMetadata->data.labelOrNote.pString      = (char*)ma_dr_wav__metadata_get_memory(pParser, sizeIncludingNullTerminator, 1);
            MA_DR_WAV_ASSERT(pMetadata->data.labelOrNote.pString != NULL);
            ma_dr_wav__metadata_parser_read(pParser, pMetadata->data.labelOrNote.pString, sizeIncludingNullTerminator, &totalBytesRead);
        } else {
            pMetadata->data.labelOrNote.stringLength = 0;
            pMetadata->data.labelOrNote.pString      = NULL;
        }
    }
    return totalBytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__read_list_labelled_cue_region_to_metadata_obj(ma_dr_wav__metadata_parser* pParser, ma_dr_wav_metadata* pMetadata, ma_uint64 chunkSize)
{
    ma_uint8 buffer[MA_DR_WAV_LIST_LABELLED_TEXT_BYTES];
    ma_uint64 totalBytesRead = 0;
    size_t bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, buffer, sizeof(buffer), &totalBytesRead);
    MA_DR_WAV_ASSERT(pParser->stage == ma_dr_wav__metadata_parser_stage_read);
    if (bytesJustRead == sizeof(buffer)) {
        ma_uint32 sizeIncludingNullTerminator;
        pMetadata->type                                = ma_dr_wav_metadata_type_list_labelled_cue_region;
        pMetadata->data.labelledCueRegion.cuePointId   = ma_dr_wav_bytes_to_u32(buffer + 0);
        pMetadata->data.labelledCueRegion.sampleLength = ma_dr_wav_bytes_to_u32(buffer + 4);
        pMetadata->data.labelledCueRegion.purposeId[0] = buffer[8];
        pMetadata->data.labelledCueRegion.purposeId[1] = buffer[9];
        pMetadata->data.labelledCueRegion.purposeId[2] = buffer[10];
        pMetadata->data.labelledCueRegion.purposeId[3] = buffer[11];
        pMetadata->data.labelledCueRegion.country      = ma_dr_wav_bytes_to_u16(buffer + 12);
        pMetadata->data.labelledCueRegion.language     = ma_dr_wav_bytes_to_u16(buffer + 14);
        pMetadata->data.labelledCueRegion.dialect      = ma_dr_wav_bytes_to_u16(buffer + 16);
        pMetadata->data.labelledCueRegion.codePage     = ma_dr_wav_bytes_to_u16(buffer + 18);
        sizeIncludingNullTerminator = (ma_uint32)chunkSize - MA_DR_WAV_LIST_LABELLED_TEXT_BYTES;
        if (sizeIncludingNullTerminator > 0) {
            pMetadata->data.labelledCueRegion.stringLength = sizeIncludingNullTerminator - 1;
            pMetadata->data.labelledCueRegion.pString      = (char*)ma_dr_wav__metadata_get_memory(pParser, sizeIncludingNullTerminator, 1);
            MA_DR_WAV_ASSERT(pMetadata->data.labelledCueRegion.pString != NULL);
            ma_dr_wav__metadata_parser_read(pParser, pMetadata->data.labelledCueRegion.pString, sizeIncludingNullTerminator, &totalBytesRead);
        } else {
            pMetadata->data.labelledCueRegion.stringLength = 0;
            pMetadata->data.labelledCueRegion.pString      = NULL;
        }
    }
    return totalBytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__metadata_process_info_text_chunk(ma_dr_wav__metadata_parser* pParser, ma_uint64 chunkSize, ma_dr_wav_metadata_type type)
{
    ma_uint64 bytesRead = 0;
    ma_uint32 stringSizeWithNullTerminator = (ma_uint32)chunkSize;
    if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
        pParser->metadataCount += 1;
        ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, stringSizeWithNullTerminator, 1);
    } else {
        ma_dr_wav_metadata* pMetadata = &pParser->pMetadata[pParser->metadataCursor];
        pMetadata->type = type;
        if (stringSizeWithNullTerminator > 0) {
            pMetadata->data.infoText.stringLength = stringSizeWithNullTerminator - 1;
            pMetadata->data.infoText.pString = (char*)ma_dr_wav__metadata_get_memory(pParser, stringSizeWithNullTerminator, 1);
            MA_DR_WAV_ASSERT(pMetadata->data.infoText.pString != NULL);
            bytesRead = ma_dr_wav__metadata_parser_read(pParser, pMetadata->data.infoText.pString, (size_t)stringSizeWithNullTerminator, NULL);
            if (bytesRead == chunkSize) {
                pParser->metadataCursor += 1;
            } else {
            }
        } else {
            pMetadata->data.infoText.stringLength = 0;
            pMetadata->data.infoText.pString      = NULL;
            pParser->metadataCursor += 1;
        }
    }
    return bytesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav__metadata_process_unknown_chunk(ma_dr_wav__metadata_parser* pParser, const ma_uint8* pChunkId, ma_uint64 chunkSize, ma_dr_wav_metadata_location location)
{
    ma_uint64 bytesRead = 0;
    if (location == ma_dr_wav_metadata_location_invalid) {
        return 0;
    }
    if (ma_dr_wav_fourcc_equal(pChunkId, "data") || ma_dr_wav_fourcc_equal(pChunkId, "fmt ") || ma_dr_wav_fourcc_equal(pChunkId, "fact")) {
        return 0;
    }
    if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
        pParser->metadataCount += 1;
        ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, (size_t)chunkSize, 1);
    } else {
        ma_dr_wav_metadata* pMetadata = &pParser->pMetadata[pParser->metadataCursor];
        pMetadata->type                         = ma_dr_wav_metadata_type_unknown;
        pMetadata->data.unknown.chunkLocation   = location;
        pMetadata->data.unknown.id[0]           = pChunkId[0];
        pMetadata->data.unknown.id[1]           = pChunkId[1];
        pMetadata->data.unknown.id[2]           = pChunkId[2];
        pMetadata->data.unknown.id[3]           = pChunkId[3];
        pMetadata->data.unknown.dataSizeInBytes = (ma_uint32)chunkSize;
        pMetadata->data.unknown.pData           = (ma_uint8 *)ma_dr_wav__metadata_get_memory(pParser, (size_t)chunkSize, 1);
        MA_DR_WAV_ASSERT(pMetadata->data.unknown.pData != NULL);
        bytesRead = ma_dr_wav__metadata_parser_read(pParser, pMetadata->data.unknown.pData, pMetadata->data.unknown.dataSizeInBytes, NULL);
        if (bytesRead == pMetadata->data.unknown.dataSizeInBytes) {
            pParser->metadataCursor += 1;
        } else {
        }
    }
    return bytesRead;
}
MA_PRIVATE ma_bool32 ma_dr_wav__chunk_matches(ma_dr_wav_metadata_type allowedMetadataTypes, const ma_uint8* pChunkID, ma_dr_wav_metadata_type type, const char* pID)
{
    return (allowedMetadataTypes & type) && ma_dr_wav_fourcc_equal(pChunkID, pID);
}
MA_PRIVATE ma_uint64 ma_dr_wav__metadata_process_chunk(ma_dr_wav__metadata_parser* pParser, const ma_dr_wav_chunk_header* pChunkHeader, ma_dr_wav_metadata_type allowedMetadataTypes)
{
    const ma_uint8 *pChunkID = pChunkHeader->id.fourcc;
    ma_uint64 bytesRead = 0;
    if (ma_dr_wav__chunk_matches(allowedMetadataTypes, pChunkID, ma_dr_wav_metadata_type_smpl, "smpl")) {
        if (pChunkHeader->sizeInBytes >= MA_DR_WAV_SMPL_BYTES) {
            if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                ma_uint8 buffer[4];
                size_t bytesJustRead;
                if (!pParser->onSeek(pParser->pReadSeekUserData, 28, ma_dr_wav_seek_origin_current)) {
                    return bytesRead;
                }
                bytesRead += 28;
                bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, buffer, sizeof(buffer), &bytesRead);
                if (bytesJustRead == sizeof(buffer)) {
                    ma_uint32 loopCount = ma_dr_wav_bytes_to_u32(buffer);
                    ma_uint64 calculatedLoopCount;
                    calculatedLoopCount = (pChunkHeader->sizeInBytes - MA_DR_WAV_SMPL_BYTES) / MA_DR_WAV_SMPL_LOOP_BYTES;
                    if (calculatedLoopCount == loopCount) {
                        bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, buffer, sizeof(buffer), &bytesRead);
                        if (bytesJustRead == sizeof(buffer)) {
                            ma_uint32 samplerSpecificDataSizeInBytes = ma_dr_wav_bytes_to_u32(buffer);
                            pParser->metadataCount += 1;
                            ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, sizeof(ma_dr_wav_smpl_loop) * loopCount, MA_DR_WAV_METADATA_ALIGNMENT);
                            ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, samplerSpecificDataSizeInBytes, 1);
                        }
                    } else {
                    }
                }
            } else {
                bytesRead = ma_dr_wav__read_smpl_to_metadata_obj(pParser, pChunkHeader, &pParser->pMetadata[pParser->metadataCursor]);
                if (bytesRead == pChunkHeader->sizeInBytes) {
                    pParser->metadataCursor += 1;
                } else {
                }
            }
        } else {
        }
    } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, pChunkID, ma_dr_wav_metadata_type_inst, "inst")) {
        if (pChunkHeader->sizeInBytes == MA_DR_WAV_INST_BYTES) {
            if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                pParser->metadataCount += 1;
            } else {
                bytesRead = ma_dr_wav__read_inst_to_metadata_obj(pParser, &pParser->pMetadata[pParser->metadataCursor]);
                if (bytesRead == pChunkHeader->sizeInBytes) {
                    pParser->metadataCursor += 1;
                } else {
                }
            }
        } else {
        }
    } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, pChunkID, ma_dr_wav_metadata_type_acid, "acid")) {
        if (pChunkHeader->sizeInBytes == MA_DR_WAV_ACID_BYTES) {
            if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                pParser->metadataCount += 1;
            } else {
                bytesRead = ma_dr_wav__read_acid_to_metadata_obj(pParser, &pParser->pMetadata[pParser->metadataCursor]);
                if (bytesRead == pChunkHeader->sizeInBytes) {
                    pParser->metadataCursor += 1;
                } else {
                }
            }
        } else {
        }
    } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, pChunkID, ma_dr_wav_metadata_type_cue, "cue ")) {
        if (pChunkHeader->sizeInBytes >= MA_DR_WAV_CUE_BYTES) {
            if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                size_t cueCount;
                pParser->metadataCount += 1;
                cueCount = (size_t)(pChunkHeader->sizeInBytes - MA_DR_WAV_CUE_BYTES) / MA_DR_WAV_CUE_POINT_BYTES;
                ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, sizeof(ma_dr_wav_cue_point) * cueCount, MA_DR_WAV_METADATA_ALIGNMENT);
            } else {
                bytesRead = ma_dr_wav__read_cue_to_metadata_obj(pParser, pChunkHeader, &pParser->pMetadata[pParser->metadataCursor]);
                if (bytesRead == pChunkHeader->sizeInBytes) {
                    pParser->metadataCursor += 1;
                } else {
                }
            }
        } else {
        }
    } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, pChunkID, ma_dr_wav_metadata_type_bext, "bext")) {
        if (pChunkHeader->sizeInBytes >= MA_DR_WAV_BEXT_BYTES) {
            if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                char buffer[MA_DR_WAV_BEXT_DESCRIPTION_BYTES + 1];
                size_t allocSizeNeeded = MA_DR_WAV_BEXT_UMID_BYTES;
                size_t bytesJustRead;
                buffer[MA_DR_WAV_BEXT_DESCRIPTION_BYTES] = '\0';
                bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, buffer, MA_DR_WAV_BEXT_DESCRIPTION_BYTES, &bytesRead);
                if (bytesJustRead != MA_DR_WAV_BEXT_DESCRIPTION_BYTES) {
                    return bytesRead;
                }
                allocSizeNeeded += ma_dr_wav__strlen(buffer) + 1;
                buffer[MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES] = '\0';
                bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, buffer, MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES, &bytesRead);
                if (bytesJustRead != MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES) {
                    return bytesRead;
                }
                allocSizeNeeded += ma_dr_wav__strlen(buffer) + 1;
                buffer[MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES] = '\0';
                bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, buffer, MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES, &bytesRead);
                if (bytesJustRead != MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES) {
                    return bytesRead;
                }
                allocSizeNeeded += ma_dr_wav__strlen(buffer) + 1;
                allocSizeNeeded += (size_t)pChunkHeader->sizeInBytes - MA_DR_WAV_BEXT_BYTES;
                ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, allocSizeNeeded, 1);
                pParser->metadataCount += 1;
            } else {
                bytesRead = ma_dr_wav__read_bext_to_metadata_obj(pParser, &pParser->pMetadata[pParser->metadataCursor], pChunkHeader->sizeInBytes);
                if (bytesRead == pChunkHeader->sizeInBytes) {
                    pParser->metadataCursor += 1;
                } else {
                }
            }
        } else {
        }
    } else if (ma_dr_wav_fourcc_equal(pChunkID, "LIST") || ma_dr_wav_fourcc_equal(pChunkID, "list")) {
        ma_dr_wav_metadata_location listType = ma_dr_wav_metadata_location_invalid;
        while (bytesRead < pChunkHeader->sizeInBytes) {
            ma_uint8 subchunkId[4];
            ma_uint8 subchunkSizeBuffer[4];
            ma_uint64 subchunkDataSize;
            ma_uint64 subchunkBytesRead = 0;
            ma_uint64 bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, subchunkId, sizeof(subchunkId), &bytesRead);
            if (bytesJustRead != sizeof(subchunkId)) {
                break;
            }
            if (ma_dr_wav_fourcc_equal(subchunkId, "adtl")) {
                listType = ma_dr_wav_metadata_location_inside_adtl_list;
                continue;
            } else if (ma_dr_wav_fourcc_equal(subchunkId, "INFO")) {
                listType = ma_dr_wav_metadata_location_inside_info_list;
                continue;
            }
            bytesJustRead = ma_dr_wav__metadata_parser_read(pParser, subchunkSizeBuffer, sizeof(subchunkSizeBuffer), &bytesRead);
            if (bytesJustRead != sizeof(subchunkSizeBuffer)) {
                break;
            }
            subchunkDataSize = ma_dr_wav_bytes_to_u32(subchunkSizeBuffer);
            if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_label, "labl") || ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_note, "note")) {
                if (subchunkDataSize >= MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES) {
                    ma_uint64 stringSizeWithNullTerm = subchunkDataSize - MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES;
                    if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                        pParser->metadataCount += 1;
                        ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, (size_t)stringSizeWithNullTerm, 1);
                    } else {
                        subchunkBytesRead = ma_dr_wav__read_list_label_or_note_to_metadata_obj(pParser, &pParser->pMetadata[pParser->metadataCursor], subchunkDataSize, ma_dr_wav_fourcc_equal(subchunkId, "labl") ? ma_dr_wav_metadata_type_list_label : ma_dr_wav_metadata_type_list_note);
                        if (subchunkBytesRead == subchunkDataSize) {
                            pParser->metadataCursor += 1;
                        } else {
                        }
                    }
                } else {
                }
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_labelled_cue_region, "ltxt")) {
                if (subchunkDataSize >= MA_DR_WAV_LIST_LABELLED_TEXT_BYTES) {
                    ma_uint64 stringSizeWithNullTerminator = subchunkDataSize - MA_DR_WAV_LIST_LABELLED_TEXT_BYTES;
                    if (pParser->stage == ma_dr_wav__metadata_parser_stage_count) {
                        pParser->metadataCount += 1;
                        ma_dr_wav__metadata_request_extra_memory_for_stage_2(pParser, (size_t)stringSizeWithNullTerminator, 1);
                    } else {
                        subchunkBytesRead = ma_dr_wav__read_list_labelled_cue_region_to_metadata_obj(pParser, &pParser->pMetadata[pParser->metadataCursor], subchunkDataSize);
                        if (subchunkBytesRead == subchunkDataSize) {
                            pParser->metadataCursor += 1;
                        } else {
                        }
                    }
                } else {
                }
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_software, "ISFT")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_software);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_copyright, "ICOP")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_copyright);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_title, "INAM")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_title);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_artist, "IART")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_artist);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_comment, "ICMT")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_comment);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_date, "ICRD")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_date);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_genre, "IGNR")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_genre);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_album, "IPRD")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_album);
            } else if (ma_dr_wav__chunk_matches(allowedMetadataTypes, subchunkId, ma_dr_wav_metadata_type_list_info_tracknumber, "ITRK")) {
                subchunkBytesRead = ma_dr_wav__metadata_process_info_text_chunk(pParser, subchunkDataSize,  ma_dr_wav_metadata_type_list_info_tracknumber);
            } else if ((allowedMetadataTypes & ma_dr_wav_metadata_type_unknown) != 0) {
                subchunkBytesRead = ma_dr_wav__metadata_process_unknown_chunk(pParser, subchunkId, subchunkDataSize, listType);
            }
            bytesRead += subchunkBytesRead;
            MA_DR_WAV_ASSERT(subchunkBytesRead <= subchunkDataSize);
            if (subchunkBytesRead < subchunkDataSize) {
                ma_uint64 bytesToSeek = subchunkDataSize - subchunkBytesRead;
                if (!pParser->onSeek(pParser->pReadSeekUserData, (int)bytesToSeek, ma_dr_wav_seek_origin_current)) {
                    break;
                }
                bytesRead += bytesToSeek;
            }
            if ((subchunkDataSize % 2) == 1) {
                if (!pParser->onSeek(pParser->pReadSeekUserData, 1, ma_dr_wav_seek_origin_current)) {
                    break;
                }
                bytesRead += 1;
            }
        }
    } else if ((allowedMetadataTypes & ma_dr_wav_metadata_type_unknown) != 0) {
        bytesRead = ma_dr_wav__metadata_process_unknown_chunk(pParser, pChunkID, pChunkHeader->sizeInBytes, ma_dr_wav_metadata_location_top_level);
    }
    return bytesRead;
}
MA_PRIVATE ma_uint32 ma_dr_wav_get_bytes_per_pcm_frame(ma_dr_wav* pWav)
{
    ma_uint32 bytesPerFrame;
    if ((pWav->bitsPerSample & 0x7) == 0) {
        bytesPerFrame = (pWav->bitsPerSample * pWav->fmt.channels) >> 3;
    } else {
        bytesPerFrame = pWav->fmt.blockAlign;
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ALAW || pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_MULAW) {
        if (bytesPerFrame != pWav->fmt.channels) {
            return 0;
        }
    }
    return bytesPerFrame;
}
MA_API ma_uint16 ma_dr_wav_fmt_get_format(const ma_dr_wav_fmt* pFMT)
{
    if (pFMT == NULL) {
        return 0;
    }
    if (pFMT->formatTag != MA_DR_WAVE_FORMAT_EXTENSIBLE) {
        return pFMT->formatTag;
    } else {
        return ma_dr_wav_bytes_to_u16(pFMT->subFormat);
    }
}
MA_PRIVATE ma_bool32 ma_dr_wav_preinit(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pReadSeekUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pWav == NULL || onRead == NULL || onSeek == NULL) {
        return MA_FALSE;
    }
    MA_DR_WAV_ZERO_MEMORY(pWav, sizeof(*pWav));
    pWav->onRead    = onRead;
    pWav->onSeek    = onSeek;
    pWav->pUserData = pReadSeekUserData;
    pWav->allocationCallbacks = ma_dr_wav_copy_allocation_callbacks_or_defaults(pAllocationCallbacks);
    if (pWav->allocationCallbacks.onFree == NULL || (pWav->allocationCallbacks.onMalloc == NULL && pWav->allocationCallbacks.onRealloc == NULL)) {
        return MA_FALSE;
    }
    return MA_TRUE;
}
MA_PRIVATE ma_bool32 ma_dr_wav_init__internal(ma_dr_wav* pWav, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags)
{
    ma_result result;
    ma_uint64 cursor;
    ma_bool32 sequential;
    ma_uint8 riff[4];
    ma_dr_wav_fmt fmt;
    unsigned short translatedFormatTag;
    ma_uint64 dataChunkSize = 0;
    ma_uint64 sampleCountFromFactChunk = 0;
    ma_uint64 metadataStartPos;
    ma_dr_wav__metadata_parser metadataParser;
    ma_bool8 isProcessingMetadata = MA_FALSE;
    ma_bool8 foundChunk_fmt  = MA_FALSE;
    ma_bool8 foundChunk_data = MA_FALSE;
    ma_bool8 isAIFCFormType = MA_FALSE;
    ma_uint64 aiffFrameCount = 0;
    cursor = 0;
    sequential = (flags & MA_DR_WAV_SEQUENTIAL) != 0;
    MA_DR_WAV_ZERO_OBJECT(&fmt);
    if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, riff, sizeof(riff), &cursor) != sizeof(riff)) {
        return MA_FALSE;
    }
    if (ma_dr_wav_fourcc_equal(riff, "RIFF")) {
        pWav->container = ma_dr_wav_container_riff;
    } else if (ma_dr_wav_fourcc_equal(riff, "RIFX")) {
        pWav->container = ma_dr_wav_container_rifx;
    } else if (ma_dr_wav_fourcc_equal(riff, "riff")) {
        int i;
        ma_uint8 riff2[12];
        pWav->container = ma_dr_wav_container_w64;
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, riff2, sizeof(riff2), &cursor) != sizeof(riff2)) {
            return MA_FALSE;
        }
        for (i = 0; i < 12; ++i) {
            if (riff2[i] != ma_dr_wavGUID_W64_RIFF[i+4]) {
                return MA_FALSE;
            }
        }
    } else if (ma_dr_wav_fourcc_equal(riff, "RF64")) {
        pWav->container = ma_dr_wav_container_rf64;
    } else if (ma_dr_wav_fourcc_equal(riff, "FORM")) {
        pWav->container = ma_dr_wav_container_aiff;
    } else {
        return MA_FALSE;
    }
    if (pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx || pWav->container == ma_dr_wav_container_rf64) {
        ma_uint8 chunkSizeBytes[4];
        ma_uint8 wave[4];
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, chunkSizeBytes, sizeof(chunkSizeBytes), &cursor) != sizeof(chunkSizeBytes)) {
            return MA_FALSE;
        }
        if (pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx) {
            if (ma_dr_wav_bytes_to_u32_ex(chunkSizeBytes, pWav->container) < 36) {
            }
        } else if (pWav->container == ma_dr_wav_container_rf64) {
            if (ma_dr_wav_bytes_to_u32_le(chunkSizeBytes) != 0xFFFFFFFF) {
                return MA_FALSE;
            }
        } else {
            return MA_FALSE;
        }
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, wave, sizeof(wave), &cursor) != sizeof(wave)) {
            return MA_FALSE;
        }
        if (!ma_dr_wav_fourcc_equal(wave, "WAVE")) {
            return MA_FALSE;
        }
    } else if (pWav->container == ma_dr_wav_container_w64) {
        ma_uint8 chunkSizeBytes[8];
        ma_uint8 wave[16];
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, chunkSizeBytes, sizeof(chunkSizeBytes), &cursor) != sizeof(chunkSizeBytes)) {
            return MA_FALSE;
        }
        if (ma_dr_wav_bytes_to_u64(chunkSizeBytes) < 80) {
            return MA_FALSE;
        }
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, wave, sizeof(wave), &cursor) != sizeof(wave)) {
            return MA_FALSE;
        }
        if (!ma_dr_wav_guid_equal(wave, ma_dr_wavGUID_W64_WAVE)) {
            return MA_FALSE;
        }
    } else if (pWav->container == ma_dr_wav_container_aiff) {
        ma_uint8 chunkSizeBytes[4];
        ma_uint8 aiff[4];
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, chunkSizeBytes, sizeof(chunkSizeBytes), &cursor) != sizeof(chunkSizeBytes)) {
            return MA_FALSE;
        }
        if (ma_dr_wav_bytes_to_u32_be(chunkSizeBytes) < 18) {
            return MA_FALSE;
        }
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, aiff, sizeof(aiff), &cursor) != sizeof(aiff)) {
            return MA_FALSE;
        }
        if (ma_dr_wav_fourcc_equal(aiff, "AIFF")) {
            isAIFCFormType = MA_FALSE;
        } else if (ma_dr_wav_fourcc_equal(aiff, "AIFC")) {
            isAIFCFormType = MA_TRUE;
        } else {
            return MA_FALSE;
        }
    } else {
        return MA_FALSE;
    }
    if (pWav->container == ma_dr_wav_container_rf64) {
        ma_uint8 sizeBytes[8];
        ma_uint64 bytesRemainingInChunk;
        ma_dr_wav_chunk_header header;
        result = ma_dr_wav__read_chunk_header(pWav->onRead, pWav->pUserData, pWav->container, &cursor, &header);
        if (result != MA_SUCCESS) {
            return MA_FALSE;
        }
        if (!ma_dr_wav_fourcc_equal(header.id.fourcc, "ds64")) {
            return MA_FALSE;
        }
        bytesRemainingInChunk = header.sizeInBytes + header.paddingSize;
        if (!ma_dr_wav__seek_forward(pWav->onSeek, 8, pWav->pUserData)) {
            return MA_FALSE;
        }
        bytesRemainingInChunk -= 8;
        cursor += 8;
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, sizeBytes, sizeof(sizeBytes), &cursor) != sizeof(sizeBytes)) {
            return MA_FALSE;
        }
        bytesRemainingInChunk -= 8;
        dataChunkSize = ma_dr_wav_bytes_to_u64(sizeBytes);
        if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, sizeBytes, sizeof(sizeBytes), &cursor) != sizeof(sizeBytes)) {
            return MA_FALSE;
        }
        bytesRemainingInChunk -= 8;
        sampleCountFromFactChunk = ma_dr_wav_bytes_to_u64(sizeBytes);
        if (!ma_dr_wav__seek_forward(pWav->onSeek, bytesRemainingInChunk, pWav->pUserData)) {
            return MA_FALSE;
        }
        cursor += bytesRemainingInChunk;
    }
    metadataStartPos = cursor;
    isProcessingMetadata = !sequential && ((flags & MA_DR_WAV_WITH_METADATA) != 0);
    if (pWav->container != ma_dr_wav_container_riff && pWav->container != ma_dr_wav_container_rf64) {
        isProcessingMetadata = MA_FALSE;
    }
    MA_DR_WAV_ZERO_MEMORY(&metadataParser, sizeof(metadataParser));
    if (isProcessingMetadata) {
        metadataParser.onRead = pWav->onRead;
        metadataParser.onSeek = pWav->onSeek;
        metadataParser.pReadSeekUserData = pWav->pUserData;
        metadataParser.stage  = ma_dr_wav__metadata_parser_stage_count;
    }
    for (;;) {
        ma_dr_wav_chunk_header header;
        ma_uint64 chunkSize;
        result = ma_dr_wav__read_chunk_header(pWav->onRead, pWav->pUserData, pWav->container, &cursor, &header);
        if (result != MA_SUCCESS) {
            break;
        }
        chunkSize = header.sizeInBytes;
        if (!sequential && onChunk != NULL) {
            ma_uint64 callbackBytesRead = onChunk(pChunkUserData, pWav->onRead, pWav->onSeek, pWav->pUserData, &header, pWav->container, &fmt);
            if (callbackBytesRead > 0) {
                if (ma_dr_wav__seek_from_start(pWav->onSeek, cursor, pWav->pUserData) == MA_FALSE) {
                    return MA_FALSE;
                }
            }
        }
        if (((pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx || pWav->container == ma_dr_wav_container_rf64) && ma_dr_wav_fourcc_equal(header.id.fourcc, "fmt ")) ||
            ((pWav->container == ma_dr_wav_container_w64) && ma_dr_wav_guid_equal(header.id.guid, ma_dr_wavGUID_W64_FMT))) {
            ma_uint8 fmtData[16];
            foundChunk_fmt = MA_TRUE;
            if (pWav->onRead(pWav->pUserData, fmtData, sizeof(fmtData)) != sizeof(fmtData)) {
                return MA_FALSE;
            }
            cursor += sizeof(fmtData);
            fmt.formatTag      = ma_dr_wav_bytes_to_u16_ex(fmtData + 0,  pWav->container);
            fmt.channels       = ma_dr_wav_bytes_to_u16_ex(fmtData + 2,  pWav->container);
            fmt.sampleRate     = ma_dr_wav_bytes_to_u32_ex(fmtData + 4,  pWav->container);
            fmt.avgBytesPerSec = ma_dr_wav_bytes_to_u32_ex(fmtData + 8,  pWav->container);
            fmt.blockAlign     = ma_dr_wav_bytes_to_u16_ex(fmtData + 12, pWav->container);
            fmt.bitsPerSample  = ma_dr_wav_bytes_to_u16_ex(fmtData + 14, pWav->container);
            fmt.extendedSize       = 0;
            fmt.validBitsPerSample = 0;
            fmt.channelMask        = 0;
            MA_DR_WAV_ZERO_MEMORY(fmt.subFormat, sizeof(fmt.subFormat));
            if (header.sizeInBytes > 16) {
                ma_uint8 fmt_cbSize[2];
                int bytesReadSoFar = 0;
                if (pWav->onRead(pWav->pUserData, fmt_cbSize, sizeof(fmt_cbSize)) != sizeof(fmt_cbSize)) {
                    return MA_FALSE;
                }
                cursor += sizeof(fmt_cbSize);
                bytesReadSoFar = 18;
                fmt.extendedSize = ma_dr_wav_bytes_to_u16_ex(fmt_cbSize, pWav->container);
                if (fmt.extendedSize > 0) {
                    if (fmt.formatTag == MA_DR_WAVE_FORMAT_EXTENSIBLE) {
                        if (fmt.extendedSize != 22) {
                            return MA_FALSE;
                        }
                    }
                    if (fmt.formatTag == MA_DR_WAVE_FORMAT_EXTENSIBLE) {
                        ma_uint8 fmtext[22];
                        if (pWav->onRead(pWav->pUserData, fmtext, fmt.extendedSize) != fmt.extendedSize) {
                            return MA_FALSE;
                        }
                        fmt.validBitsPerSample = ma_dr_wav_bytes_to_u16_ex(fmtext + 0, pWav->container);
                        fmt.channelMask        = ma_dr_wav_bytes_to_u32_ex(fmtext + 2, pWav->container);
                        ma_dr_wav_bytes_to_guid(fmtext + 6, fmt.subFormat);
                    } else {
                        if (pWav->onSeek(pWav->pUserData, fmt.extendedSize, ma_dr_wav_seek_origin_current) == MA_FALSE) {
                            return MA_FALSE;
                        }
                    }
                    cursor += fmt.extendedSize;
                    bytesReadSoFar += fmt.extendedSize;
                }
                if (pWav->onSeek(pWav->pUserData, (int)(header.sizeInBytes - bytesReadSoFar), ma_dr_wav_seek_origin_current) == MA_FALSE) {
                    return MA_FALSE;
                }
                cursor += (header.sizeInBytes - bytesReadSoFar);
            }
            if (header.paddingSize > 0) {
                if (ma_dr_wav__seek_forward(pWav->onSeek, header.paddingSize, pWav->pUserData) == MA_FALSE) {
                    break;
                }
                cursor += header.paddingSize;
            }
            continue;
        }
        if (((pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx || pWav->container == ma_dr_wav_container_rf64) && ma_dr_wav_fourcc_equal(header.id.fourcc, "data")) ||
            ((pWav->container == ma_dr_wav_container_w64) && ma_dr_wav_guid_equal(header.id.guid, ma_dr_wavGUID_W64_DATA))) {
            foundChunk_data = MA_TRUE;
            pWav->dataChunkDataPos  = cursor;
            if (pWav->container != ma_dr_wav_container_rf64) {
                dataChunkSize = chunkSize;
            }
            if (sequential || !isProcessingMetadata) {
                break;
            } else {
                chunkSize += header.paddingSize;
                if (ma_dr_wav__seek_forward(pWav->onSeek, chunkSize, pWav->pUserData) == MA_FALSE) {
                    break;
                }
                cursor += chunkSize;
                continue;
            }
        }
        if (((pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx || pWav->container == ma_dr_wav_container_rf64) && ma_dr_wav_fourcc_equal(header.id.fourcc, "fact")) ||
            ((pWav->container == ma_dr_wav_container_w64) && ma_dr_wav_guid_equal(header.id.guid, ma_dr_wavGUID_W64_FACT))) {
            if (pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx) {
                ma_uint8 sampleCount[4];
                if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, &sampleCount, 4, &cursor) != 4) {
                    return MA_FALSE;
                }
                chunkSize -= 4;
                if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM) {
                    sampleCountFromFactChunk = ma_dr_wav_bytes_to_u32_ex(sampleCount, pWav->container);
                } else {
                    sampleCountFromFactChunk = 0;
                }
            } else if (pWav->container == ma_dr_wav_container_w64) {
                if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, &sampleCountFromFactChunk, 8, &cursor) != 8) {
                    return MA_FALSE;
                }
                chunkSize -= 8;
            } else if (pWav->container == ma_dr_wav_container_rf64) {
            }
            chunkSize += header.paddingSize;
            if (ma_dr_wav__seek_forward(pWav->onSeek, chunkSize, pWav->pUserData) == MA_FALSE) {
                break;
            }
            cursor += chunkSize;
            continue;
        }
        if (pWav->container == ma_dr_wav_container_aiff && ma_dr_wav_fourcc_equal(header.id.fourcc, "COMM")) {
            ma_uint8 commData[24];
            ma_uint32 commDataBytesToRead;
            ma_uint16 channels;
            ma_uint32 frameCount;
            ma_uint16 sampleSizeInBits;
            ma_int64  sampleRate;
            ma_uint16 compressionFormat;
            foundChunk_fmt = MA_TRUE;
            if (isAIFCFormType) {
                commDataBytesToRead = 24;
                if (header.sizeInBytes < commDataBytesToRead) {
                    return MA_FALSE;
                }
            } else {
                commDataBytesToRead = 18;
                if (header.sizeInBytes != commDataBytesToRead) {
                    return MA_FALSE;
                }
            }
            if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, commData, commDataBytesToRead, &cursor) != commDataBytesToRead) {
                return MA_FALSE;
            }
            channels         = ma_dr_wav_bytes_to_u16_ex     (commData + 0, pWav->container);
            frameCount       = ma_dr_wav_bytes_to_u32_ex     (commData + 2, pWav->container);
            sampleSizeInBits = ma_dr_wav_bytes_to_u16_ex     (commData + 6, pWav->container);
            sampleRate       = ma_dr_wav_aiff_extented_to_s64(commData + 8);
            if (sampleRate < 0 || sampleRate > 0xFFFFFFFF) {
                return MA_FALSE;
            }
            if (isAIFCFormType) {
                const ma_uint8* type = commData + 18;
                if (ma_dr_wav_fourcc_equal(type, "NONE")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_PCM;
                } else if (ma_dr_wav_fourcc_equal(type, "raw ")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_PCM;
                    if (sampleSizeInBits == 8) {
                        pWav->aiff.isUnsigned = MA_TRUE;
                    }
                } else if (ma_dr_wav_fourcc_equal(type, "sowt")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_PCM;
                    pWav->aiff.isLE = MA_TRUE;
                } else if (ma_dr_wav_fourcc_equal(type, "fl32") || ma_dr_wav_fourcc_equal(type, "fl64") || ma_dr_wav_fourcc_equal(type, "FL32") || ma_dr_wav_fourcc_equal(type, "FL64")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_IEEE_FLOAT;
                } else if (ma_dr_wav_fourcc_equal(type, "alaw") || ma_dr_wav_fourcc_equal(type, "ALAW")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_ALAW;
                } else if (ma_dr_wav_fourcc_equal(type, "ulaw") || ma_dr_wav_fourcc_equal(type, "ULAW")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_MULAW;
                } else if (ma_dr_wav_fourcc_equal(type, "ima4")) {
                    compressionFormat = MA_DR_WAVE_FORMAT_DVI_ADPCM;
                    sampleSizeInBits  = 4;
                    (void)compressionFormat;
                    (void)sampleSizeInBits;
                    return MA_FALSE;
                } else {
                    return MA_FALSE;
                }
            } else {
                compressionFormat = MA_DR_WAVE_FORMAT_PCM;
            }
            aiffFrameCount = frameCount;
            fmt.formatTag      = compressionFormat;
            fmt.channels       = channels;
            fmt.sampleRate     = (ma_uint32)sampleRate;
            fmt.bitsPerSample  = sampleSizeInBits;
            fmt.blockAlign     = (ma_uint16)(fmt.channels * fmt.bitsPerSample / 8);
            fmt.avgBytesPerSec = fmt.blockAlign * fmt.sampleRate;
            if (fmt.blockAlign == 0 && compressionFormat == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
                fmt.blockAlign = 34 * fmt.channels;
            }
            if (compressionFormat == MA_DR_WAVE_FORMAT_ALAW || compressionFormat == MA_DR_WAVE_FORMAT_MULAW) {
                if (fmt.bitsPerSample > 8) {
                    fmt.bitsPerSample = 8;
                    fmt.blockAlign = fmt.channels;
                }
            }
            fmt.bitsPerSample += (fmt.bitsPerSample & 7);
            if (isAIFCFormType) {
                if (ma_dr_wav__seek_forward(pWav->onSeek, (chunkSize - commDataBytesToRead), pWav->pUserData) == MA_FALSE) {
                    return MA_FALSE;
                }
                cursor += (chunkSize - commDataBytesToRead);
            }
            continue;
        }
        if (pWav->container == ma_dr_wav_container_aiff && ma_dr_wav_fourcc_equal(header.id.fourcc, "SSND")) {
            ma_uint8 offsetAndBlockSizeData[8];
            ma_uint32 offset;
            foundChunk_data = MA_TRUE;
            if (ma_dr_wav__on_read(pWav->onRead, pWav->pUserData, offsetAndBlockSizeData, sizeof(offsetAndBlockSizeData), &cursor) != sizeof(offsetAndBlockSizeData)) {
                return MA_FALSE;
            }
            offset = ma_dr_wav_bytes_to_u32_ex(offsetAndBlockSizeData + 0, pWav->container);
            if (ma_dr_wav__seek_forward(pWav->onSeek, offset, pWav->pUserData) == MA_FALSE) {
                return MA_FALSE;
            }
            cursor += offset;
            pWav->dataChunkDataPos = cursor;
            dataChunkSize = chunkSize;
            if (sequential || !isProcessingMetadata) {
                break;
            } else {
                if (ma_dr_wav__seek_forward(pWav->onSeek, chunkSize, pWav->pUserData) == MA_FALSE) {
                    break;
                }
                cursor += chunkSize;
                continue;
            }
        }
        if (isProcessingMetadata) {
            ma_dr_wav__metadata_process_chunk(&metadataParser, &header, ma_dr_wav_metadata_type_all_including_unknown);
            if (ma_dr_wav__seek_from_start(pWav->onSeek, cursor, pWav->pUserData) == MA_FALSE) {
                break;
            }
        }
        chunkSize += header.paddingSize;
        if (ma_dr_wav__seek_forward(pWav->onSeek, chunkSize, pWav->pUserData) == MA_FALSE) {
            break;
        }
        cursor += chunkSize;
    }
    if (!foundChunk_fmt || !foundChunk_data) {
        return MA_FALSE;
    }
    if ((fmt.sampleRate    == 0 || fmt.sampleRate    > MA_DR_WAV_MAX_SAMPLE_RATE    ) ||
        (fmt.channels      == 0 || fmt.channels      > MA_DR_WAV_MAX_CHANNELS       ) ||
        (fmt.bitsPerSample == 0 || fmt.bitsPerSample > MA_DR_WAV_MAX_BITS_PER_SAMPLE) ||
        fmt.blockAlign == 0) {
        return MA_FALSE;
    }
    translatedFormatTag = fmt.formatTag;
    if (translatedFormatTag == MA_DR_WAVE_FORMAT_EXTENSIBLE) {
        translatedFormatTag = ma_dr_wav_bytes_to_u16_ex(fmt.subFormat + 0, pWav->container);
    }
    if (!sequential) {
        if (!ma_dr_wav__seek_from_start(pWav->onSeek, pWav->dataChunkDataPos, pWav->pUserData)) {
            return MA_FALSE;
        }
        cursor = pWav->dataChunkDataPos;
    }
    if (isProcessingMetadata && metadataParser.metadataCount > 0) {
        if (ma_dr_wav__seek_from_start(pWav->onSeek, metadataStartPos, pWav->pUserData) == MA_FALSE) {
            return MA_FALSE;
        }
        result = ma_dr_wav__metadata_alloc(&metadataParser, &pWav->allocationCallbacks);
        if (result != MA_SUCCESS) {
            return MA_FALSE;
        }
        metadataParser.stage = ma_dr_wav__metadata_parser_stage_read;
        for (;;) {
            ma_dr_wav_chunk_header header;
            ma_uint64 metadataBytesRead;
            result = ma_dr_wav__read_chunk_header(pWav->onRead, pWav->pUserData, pWav->container, &cursor, &header);
            if (result != MA_SUCCESS) {
                break;
            }
            metadataBytesRead = ma_dr_wav__metadata_process_chunk(&metadataParser, &header, ma_dr_wav_metadata_type_all_including_unknown);
            if (ma_dr_wav__seek_forward(pWav->onSeek, (header.sizeInBytes + header.paddingSize) - metadataBytesRead, pWav->pUserData) == MA_FALSE) {
                ma_dr_wav_free(metadataParser.pMetadata, &pWav->allocationCallbacks);
                return MA_FALSE;
            }
        }
        pWav->pMetadata     = metadataParser.pMetadata;
        pWav->metadataCount = metadataParser.metadataCount;
    }
    if (dataChunkSize == 0xFFFFFFFF && (pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rifx) && pWav->isSequentialWrite == MA_FALSE) {
        dataChunkSize = 0;
        for (;;) {
            ma_uint8 temp[4096];
            size_t bytesRead = pWav->onRead(pWav->pUserData, temp, sizeof(temp));
            dataChunkSize += bytesRead;
            if (bytesRead < sizeof(temp)) {
                break;
            }
        }
    }
    if (ma_dr_wav__seek_from_start(pWav->onSeek, pWav->dataChunkDataPos, pWav->pUserData) == MA_FALSE) {
        ma_dr_wav_free(pWav->pMetadata, &pWav->allocationCallbacks);
        return MA_FALSE;
    }
    pWav->fmt                 = fmt;
    pWav->sampleRate          = fmt.sampleRate;
    pWav->channels            = fmt.channels;
    pWav->bitsPerSample       = fmt.bitsPerSample;
    pWav->bytesRemaining      = dataChunkSize;
    pWav->translatedFormatTag = translatedFormatTag;
    pWav->dataChunkDataSize   = dataChunkSize;
    if (sampleCountFromFactChunk != 0) {
        pWav->totalPCMFrameCount = sampleCountFromFactChunk;
    } else if (aiffFrameCount != 0) {
        pWav->totalPCMFrameCount = aiffFrameCount;
    } else {
        ma_uint32 bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
        if (bytesPerFrame == 0) {
            ma_dr_wav_free(pWav->pMetadata, &pWav->allocationCallbacks);
            return MA_FALSE;
        }
        pWav->totalPCMFrameCount = dataChunkSize / bytesPerFrame;
        if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM) {
            ma_uint64 totalBlockHeaderSizeInBytes;
            ma_uint64 blockCount = dataChunkSize / fmt.blockAlign;
            if ((blockCount * fmt.blockAlign) < dataChunkSize) {
                blockCount += 1;
            }
            totalBlockHeaderSizeInBytes = blockCount * (6*fmt.channels);
            pWav->totalPCMFrameCount = ((dataChunkSize - totalBlockHeaderSizeInBytes) * 2) / fmt.channels;
        }
        if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
            ma_uint64 totalBlockHeaderSizeInBytes;
            ma_uint64 blockCount = dataChunkSize / fmt.blockAlign;
            if ((blockCount * fmt.blockAlign) < dataChunkSize) {
                blockCount += 1;
            }
            totalBlockHeaderSizeInBytes = blockCount * (4*fmt.channels);
            pWav->totalPCMFrameCount = ((dataChunkSize - totalBlockHeaderSizeInBytes) * 2) / fmt.channels;
            pWav->totalPCMFrameCount += blockCount;
        }
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM || pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
        if (pWav->channels > 2) {
            ma_dr_wav_free(pWav->pMetadata, &pWav->allocationCallbacks);
            return MA_FALSE;
        }
    }
    if (ma_dr_wav_get_bytes_per_pcm_frame(pWav) == 0) {
        ma_dr_wav_free(pWav->pMetadata, &pWav->allocationCallbacks);
        return MA_FALSE;
    }
#ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM) {
        ma_uint64 blockCount = dataChunkSize / fmt.blockAlign;
        pWav->totalPCMFrameCount = (((blockCount * (fmt.blockAlign - (6*pWav->channels))) * 2)) / fmt.channels;
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
        ma_uint64 blockCount = dataChunkSize / fmt.blockAlign;
        pWav->totalPCMFrameCount = (((blockCount * (fmt.blockAlign - (4*pWav->channels))) * 2) + (blockCount * pWav->channels)) / fmt.channels;
    }
#endif
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_wav_init(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_ex(pWav, onRead, onSeek, NULL, pUserData, NULL, 0, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_ex(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, ma_dr_wav_chunk_proc onChunk, void* pReadSeekUserData, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (!ma_dr_wav_preinit(pWav, onRead, onSeek, pReadSeekUserData, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    return ma_dr_wav_init__internal(pWav, onChunk, pChunkUserData, flags);
}
MA_API ma_bool32 ma_dr_wav_init_with_metadata(ma_dr_wav* pWav, ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (!ma_dr_wav_preinit(pWav, onRead, onSeek, pUserData, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    return ma_dr_wav_init__internal(pWav, NULL, NULL, flags | MA_DR_WAV_WITH_METADATA);
}
MA_API ma_dr_wav_metadata* ma_dr_wav_take_ownership_of_metadata(ma_dr_wav* pWav)
{
    ma_dr_wav_metadata *result = pWav->pMetadata;
    pWav->pMetadata     = NULL;
    pWav->metadataCount = 0;
    return result;
}
MA_PRIVATE size_t ma_dr_wav__write(ma_dr_wav* pWav, const void* pData, size_t dataSize)
{
    MA_DR_WAV_ASSERT(pWav          != NULL);
    MA_DR_WAV_ASSERT(pWav->onWrite != NULL);
    return pWav->onWrite(pWav->pUserData, pData, dataSize);
}
MA_PRIVATE size_t ma_dr_wav__write_byte(ma_dr_wav* pWav, ma_uint8 byte)
{
    MA_DR_WAV_ASSERT(pWav          != NULL);
    MA_DR_WAV_ASSERT(pWav->onWrite != NULL);
    return pWav->onWrite(pWav->pUserData, &byte, 1);
}
MA_PRIVATE size_t ma_dr_wav__write_u16ne_to_le(ma_dr_wav* pWav, ma_uint16 value)
{
    MA_DR_WAV_ASSERT(pWav          != NULL);
    MA_DR_WAV_ASSERT(pWav->onWrite != NULL);
    if (!ma_dr_wav__is_little_endian()) {
        value = ma_dr_wav__bswap16(value);
    }
    return ma_dr_wav__write(pWav, &value, 2);
}
MA_PRIVATE size_t ma_dr_wav__write_u32ne_to_le(ma_dr_wav* pWav, ma_uint32 value)
{
    MA_DR_WAV_ASSERT(pWav          != NULL);
    MA_DR_WAV_ASSERT(pWav->onWrite != NULL);
    if (!ma_dr_wav__is_little_endian()) {
        value = ma_dr_wav__bswap32(value);
    }
    return ma_dr_wav__write(pWav, &value, 4);
}
MA_PRIVATE size_t ma_dr_wav__write_u64ne_to_le(ma_dr_wav* pWav, ma_uint64 value)
{
    MA_DR_WAV_ASSERT(pWav          != NULL);
    MA_DR_WAV_ASSERT(pWav->onWrite != NULL);
    if (!ma_dr_wav__is_little_endian()) {
        value = ma_dr_wav__bswap64(value);
    }
    return ma_dr_wav__write(pWav, &value, 8);
}
MA_PRIVATE size_t ma_dr_wav__write_f32ne_to_le(ma_dr_wav* pWav, float value)
{
    union {
       ma_uint32 u32;
       float f32;
    } u;
    MA_DR_WAV_ASSERT(pWav          != NULL);
    MA_DR_WAV_ASSERT(pWav->onWrite != NULL);
    u.f32 = value;
    if (!ma_dr_wav__is_little_endian()) {
        u.u32 = ma_dr_wav__bswap32(u.u32);
    }
    return ma_dr_wav__write(pWav, &u.u32, 4);
}
MA_PRIVATE size_t ma_dr_wav__write_or_count(ma_dr_wav* pWav, const void* pData, size_t dataSize)
{
    if (pWav == NULL) {
        return dataSize;
    }
    return ma_dr_wav__write(pWav, pData, dataSize);
}
MA_PRIVATE size_t ma_dr_wav__write_or_count_byte(ma_dr_wav* pWav, ma_uint8 byte)
{
    if (pWav == NULL) {
        return 1;
    }
    return ma_dr_wav__write_byte(pWav, byte);
}
MA_PRIVATE size_t ma_dr_wav__write_or_count_u16ne_to_le(ma_dr_wav* pWav, ma_uint16 value)
{
    if (pWav == NULL) {
        return 2;
    }
    return ma_dr_wav__write_u16ne_to_le(pWav, value);
}
MA_PRIVATE size_t ma_dr_wav__write_or_count_u32ne_to_le(ma_dr_wav* pWav, ma_uint32 value)
{
    if (pWav == NULL) {
        return 4;
    }
    return ma_dr_wav__write_u32ne_to_le(pWav, value);
}
#if 0
MA_PRIVATE size_t ma_dr_wav__write_or_count_u64ne_to_le(ma_dr_wav* pWav, ma_uint64 value)
{
    if (pWav == NULL) {
        return 8;
    }
    return ma_dr_wav__write_u64ne_to_le(pWav, value);
}
#endif
MA_PRIVATE size_t ma_dr_wav__write_or_count_f32ne_to_le(ma_dr_wav* pWav, float value)
{
    if (pWav == NULL) {
        return 4;
    }
    return ma_dr_wav__write_f32ne_to_le(pWav, value);
}
MA_PRIVATE size_t ma_dr_wav__write_or_count_string_to_fixed_size_buf(ma_dr_wav* pWav, char* str, size_t bufFixedSize)
{
    size_t len;
    if (pWav == NULL) {
        return bufFixedSize;
    }
    len = ma_dr_wav__strlen_clamped(str, bufFixedSize);
    ma_dr_wav__write_or_count(pWav, str, len);
    if (len < bufFixedSize) {
        size_t i;
        for (i = 0; i < bufFixedSize - len; ++i) {
            ma_dr_wav__write_byte(pWav, 0);
        }
    }
    return bufFixedSize;
}
MA_PRIVATE size_t ma_dr_wav__write_or_count_metadata(ma_dr_wav* pWav, ma_dr_wav_metadata* pMetadatas, ma_uint32 metadataCount)
{
    size_t bytesWritten = 0;
    ma_bool32 hasListAdtl = MA_FALSE;
    ma_bool32 hasListInfo = MA_FALSE;
    ma_uint32 iMetadata;
    if (pMetadatas == NULL || metadataCount == 0) {
        return 0;
    }
    for (iMetadata = 0; iMetadata < metadataCount; ++iMetadata) {
        ma_dr_wav_metadata* pMetadata = &pMetadatas[iMetadata];
        ma_uint32 chunkSize = 0;
        if ((pMetadata->type & ma_dr_wav_metadata_type_list_all_info_strings) || (pMetadata->type == ma_dr_wav_metadata_type_unknown && pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_inside_info_list)) {
            hasListInfo = MA_TRUE;
        }
        if ((pMetadata->type & ma_dr_wav_metadata_type_list_all_adtl) || (pMetadata->type == ma_dr_wav_metadata_type_unknown && pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_inside_adtl_list)) {
            hasListAdtl = MA_TRUE;
        }
        switch (pMetadata->type) {
            case ma_dr_wav_metadata_type_smpl:
            {
                ma_uint32 iLoop;
                chunkSize = MA_DR_WAV_SMPL_BYTES + MA_DR_WAV_SMPL_LOOP_BYTES * pMetadata->data.smpl.sampleLoopCount + pMetadata->data.smpl.samplerSpecificDataSizeInBytes;
                bytesWritten += ma_dr_wav__write_or_count(pWav, "smpl", 4);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.manufacturerId);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.productId);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.samplePeriodNanoseconds);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.midiUnityNote);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.midiPitchFraction);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.smpteFormat);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.smpteOffset);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.sampleLoopCount);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.samplerSpecificDataSizeInBytes);
                for (iLoop = 0; iLoop < pMetadata->data.smpl.sampleLoopCount; ++iLoop) {
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.pLoops[iLoop].cuePointId);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.pLoops[iLoop].type);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.pLoops[iLoop].firstSampleByteOffset);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.pLoops[iLoop].lastSampleByteOffset);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.pLoops[iLoop].sampleFraction);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.smpl.pLoops[iLoop].playCount);
                }
                if (pMetadata->data.smpl.samplerSpecificDataSizeInBytes > 0) {
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.smpl.pSamplerSpecificData, pMetadata->data.smpl.samplerSpecificDataSizeInBytes);
                }
            } break;
            case ma_dr_wav_metadata_type_inst:
            {
                chunkSize = MA_DR_WAV_INST_BYTES;
                bytesWritten += ma_dr_wav__write_or_count(pWav, "inst", 4);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.midiUnityNote, 1);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.fineTuneCents, 1);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.gainDecibels, 1);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.lowNote, 1);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.highNote, 1);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.lowVelocity, 1);
                bytesWritten += ma_dr_wav__write_or_count(pWav, &pMetadata->data.inst.highVelocity, 1);
            } break;
            case ma_dr_wav_metadata_type_cue:
            {
                ma_uint32 iCuePoint;
                chunkSize = MA_DR_WAV_CUE_BYTES + MA_DR_WAV_CUE_POINT_BYTES * pMetadata->data.cue.cuePointCount;
                bytesWritten += ma_dr_wav__write_or_count(pWav, "cue ", 4);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.cue.cuePointCount);
                for (iCuePoint = 0; iCuePoint < pMetadata->data.cue.cuePointCount; ++iCuePoint) {
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.cue.pCuePoints[iCuePoint].id);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.cue.pCuePoints[iCuePoint].playOrderPosition);
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.cue.pCuePoints[iCuePoint].dataChunkId, 4);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.cue.pCuePoints[iCuePoint].chunkStart);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.cue.pCuePoints[iCuePoint].blockStart);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.cue.pCuePoints[iCuePoint].sampleByteOffset);
                }
            } break;
            case ma_dr_wav_metadata_type_acid:
            {
                chunkSize = MA_DR_WAV_ACID_BYTES;
                bytesWritten += ma_dr_wav__write_or_count(pWav, "acid", 4);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.acid.flags);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.acid.midiUnityNote);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.acid.reserved1);
                bytesWritten += ma_dr_wav__write_or_count_f32ne_to_le(pWav, pMetadata->data.acid.reserved2);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.acid.numBeats);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.acid.meterDenominator);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.acid.meterNumerator);
                bytesWritten += ma_dr_wav__write_or_count_f32ne_to_le(pWav, pMetadata->data.acid.tempo);
            } break;
            case ma_dr_wav_metadata_type_bext:
            {
                char reservedBuf[MA_DR_WAV_BEXT_RESERVED_BYTES];
                ma_uint32 timeReferenceLow;
                ma_uint32 timeReferenceHigh;
                chunkSize = MA_DR_WAV_BEXT_BYTES + pMetadata->data.bext.codingHistorySize;
                bytesWritten += ma_dr_wav__write_or_count(pWav, "bext", 4);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
                bytesWritten += ma_dr_wav__write_or_count_string_to_fixed_size_buf(pWav, pMetadata->data.bext.pDescription, MA_DR_WAV_BEXT_DESCRIPTION_BYTES);
                bytesWritten += ma_dr_wav__write_or_count_string_to_fixed_size_buf(pWav, pMetadata->data.bext.pOriginatorName, MA_DR_WAV_BEXT_ORIGINATOR_NAME_BYTES);
                bytesWritten += ma_dr_wav__write_or_count_string_to_fixed_size_buf(pWav, pMetadata->data.bext.pOriginatorReference, MA_DR_WAV_BEXT_ORIGINATOR_REF_BYTES);
                bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.bext.pOriginationDate, sizeof(pMetadata->data.bext.pOriginationDate));
                bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.bext.pOriginationTime, sizeof(pMetadata->data.bext.pOriginationTime));
                timeReferenceLow  = (ma_uint32)(pMetadata->data.bext.timeReference & 0xFFFFFFFF);
                timeReferenceHigh = (ma_uint32)(pMetadata->data.bext.timeReference >> 32);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, timeReferenceLow);
                bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, timeReferenceHigh);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.bext.version);
                bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.bext.pUMID, MA_DR_WAV_BEXT_UMID_BYTES);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.bext.loudnessValue);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.bext.loudnessRange);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.bext.maxTruePeakLevel);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.bext.maxMomentaryLoudness);
                bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.bext.maxShortTermLoudness);
                MA_DR_WAV_ZERO_MEMORY(reservedBuf, sizeof(reservedBuf));
                bytesWritten += ma_dr_wav__write_or_count(pWav, reservedBuf, sizeof(reservedBuf));
                if (pMetadata->data.bext.codingHistorySize > 0) {
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.bext.pCodingHistory, pMetadata->data.bext.codingHistorySize);
                }
            } break;
            case ma_dr_wav_metadata_type_unknown:
            {
                if (pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_top_level) {
                    chunkSize = pMetadata->data.unknown.dataSizeInBytes;
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.unknown.id, 4);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.unknown.pData, pMetadata->data.unknown.dataSizeInBytes);
                }
            } break;
            default: break;
        }
        if ((chunkSize % 2) != 0) {
            bytesWritten += ma_dr_wav__write_or_count_byte(pWav, 0);
        }
    }
    if (hasListInfo) {
        ma_uint32 chunkSize = 4;
        for (iMetadata = 0; iMetadata < metadataCount; ++iMetadata) {
            ma_dr_wav_metadata* pMetadata = &pMetadatas[iMetadata];
            if ((pMetadata->type & ma_dr_wav_metadata_type_list_all_info_strings)) {
                chunkSize += 8;
                chunkSize += pMetadata->data.infoText.stringLength + 1;
            } else if (pMetadata->type == ma_dr_wav_metadata_type_unknown && pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_inside_info_list) {
                chunkSize += 8;
                chunkSize += pMetadata->data.unknown.dataSizeInBytes;
            }
            if ((chunkSize % 2) != 0) {
                chunkSize += 1;
            }
        }
        bytesWritten += ma_dr_wav__write_or_count(pWav, "LIST", 4);
        bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
        bytesWritten += ma_dr_wav__write_or_count(pWav, "INFO", 4);
        for (iMetadata = 0; iMetadata < metadataCount; ++iMetadata) {
            ma_dr_wav_metadata* pMetadata = &pMetadatas[iMetadata];
            ma_uint32 subchunkSize = 0;
            if (pMetadata->type & ma_dr_wav_metadata_type_list_all_info_strings) {
                const char* pID = NULL;
                switch (pMetadata->type) {
                    case ma_dr_wav_metadata_type_list_info_software:    pID = "ISFT"; break;
                    case ma_dr_wav_metadata_type_list_info_copyright:   pID = "ICOP"; break;
                    case ma_dr_wav_metadata_type_list_info_title:       pID = "INAM"; break;
                    case ma_dr_wav_metadata_type_list_info_artist:      pID = "IART"; break;
                    case ma_dr_wav_metadata_type_list_info_comment:     pID = "ICMT"; break;
                    case ma_dr_wav_metadata_type_list_info_date:        pID = "ICRD"; break;
                    case ma_dr_wav_metadata_type_list_info_genre:       pID = "IGNR"; break;
                    case ma_dr_wav_metadata_type_list_info_album:       pID = "IPRD"; break;
                    case ma_dr_wav_metadata_type_list_info_tracknumber: pID = "ITRK"; break;
                    default: break;
                }
                MA_DR_WAV_ASSERT(pID != NULL);
                if (pMetadata->data.infoText.stringLength) {
                    subchunkSize = pMetadata->data.infoText.stringLength + 1;
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pID, 4);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, subchunkSize);
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.infoText.pString, pMetadata->data.infoText.stringLength);
                    bytesWritten += ma_dr_wav__write_or_count_byte(pWav, '\0');
                }
            } else if (pMetadata->type == ma_dr_wav_metadata_type_unknown && pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_inside_info_list) {
                if (pMetadata->data.unknown.dataSizeInBytes) {
                    subchunkSize = pMetadata->data.unknown.dataSizeInBytes;
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.unknown.id, 4);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.unknown.dataSizeInBytes);
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.unknown.pData, subchunkSize);
                }
            }
            if ((subchunkSize % 2) != 0) {
                bytesWritten += ma_dr_wav__write_or_count_byte(pWav, 0);
            }
        }
    }
    if (hasListAdtl) {
        ma_uint32 chunkSize = 4;
        for (iMetadata = 0; iMetadata < metadataCount; ++iMetadata) {
            ma_dr_wav_metadata* pMetadata = &pMetadatas[iMetadata];
            switch (pMetadata->type)
            {
                case ma_dr_wav_metadata_type_list_label:
                case ma_dr_wav_metadata_type_list_note:
                {
                    chunkSize += 8;
                    chunkSize += MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES;
                    if (pMetadata->data.labelOrNote.stringLength > 0) {
                        chunkSize += pMetadata->data.labelOrNote.stringLength + 1;
                    }
                } break;
                case ma_dr_wav_metadata_type_list_labelled_cue_region:
                {
                    chunkSize += 8;
                    chunkSize += MA_DR_WAV_LIST_LABELLED_TEXT_BYTES;
                    if (pMetadata->data.labelledCueRegion.stringLength > 0) {
                        chunkSize += pMetadata->data.labelledCueRegion.stringLength + 1;
                    }
                } break;
                case ma_dr_wav_metadata_type_unknown:
                {
                    if (pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_inside_adtl_list) {
                        chunkSize += 8;
                        chunkSize += pMetadata->data.unknown.dataSizeInBytes;
                    }
                } break;
                default: break;
            }
            if ((chunkSize % 2) != 0) {
                chunkSize += 1;
            }
        }
        bytesWritten += ma_dr_wav__write_or_count(pWav, "LIST", 4);
        bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, chunkSize);
        bytesWritten += ma_dr_wav__write_or_count(pWav, "adtl", 4);
        for (iMetadata = 0; iMetadata < metadataCount; ++iMetadata) {
            ma_dr_wav_metadata* pMetadata = &pMetadatas[iMetadata];
            ma_uint32 subchunkSize = 0;
            switch (pMetadata->type)
            {
                case ma_dr_wav_metadata_type_list_label:
                case ma_dr_wav_metadata_type_list_note:
                {
                    if (pMetadata->data.labelOrNote.stringLength > 0) {
                        const char *pID = NULL;
                        if (pMetadata->type == ma_dr_wav_metadata_type_list_label) {
                            pID = "labl";
                        }
                        else if (pMetadata->type == ma_dr_wav_metadata_type_list_note) {
                            pID = "note";
                        }
                        MA_DR_WAV_ASSERT(pID != NULL);
                        MA_DR_WAV_ASSERT(pMetadata->data.labelOrNote.pString != NULL);
                        subchunkSize = MA_DR_WAV_LIST_LABEL_OR_NOTE_BYTES;
                        bytesWritten += ma_dr_wav__write_or_count(pWav, pID, 4);
                        subchunkSize += pMetadata->data.labelOrNote.stringLength + 1;
                        bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, subchunkSize);
                        bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.labelOrNote.cuePointId);
                        bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.labelOrNote.pString, pMetadata->data.labelOrNote.stringLength);
                        bytesWritten += ma_dr_wav__write_or_count_byte(pWav, '\0');
                    }
                } break;
                case ma_dr_wav_metadata_type_list_labelled_cue_region:
                {
                    subchunkSize = MA_DR_WAV_LIST_LABELLED_TEXT_BYTES;
                    bytesWritten += ma_dr_wav__write_or_count(pWav, "ltxt", 4);
                    if (pMetadata->data.labelledCueRegion.stringLength > 0) {
                        subchunkSize += pMetadata->data.labelledCueRegion.stringLength + 1;
                    }
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, subchunkSize);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.labelledCueRegion.cuePointId);
                    bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, pMetadata->data.labelledCueRegion.sampleLength);
                    bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.labelledCueRegion.purposeId, 4);
                    bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.labelledCueRegion.country);
                    bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.labelledCueRegion.language);
                    bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.labelledCueRegion.dialect);
                    bytesWritten += ma_dr_wav__write_or_count_u16ne_to_le(pWav, pMetadata->data.labelledCueRegion.codePage);
                    if (pMetadata->data.labelledCueRegion.stringLength > 0) {
                        MA_DR_WAV_ASSERT(pMetadata->data.labelledCueRegion.pString != NULL);
                        bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.labelledCueRegion.pString, pMetadata->data.labelledCueRegion.stringLength);
                        bytesWritten += ma_dr_wav__write_or_count_byte(pWav, '\0');
                    }
                } break;
                case ma_dr_wav_metadata_type_unknown:
                {
                    if (pMetadata->data.unknown.chunkLocation == ma_dr_wav_metadata_location_inside_adtl_list) {
                        subchunkSize = pMetadata->data.unknown.dataSizeInBytes;
                        MA_DR_WAV_ASSERT(pMetadata->data.unknown.pData != NULL);
                        bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.unknown.id, 4);
                        bytesWritten += ma_dr_wav__write_or_count_u32ne_to_le(pWav, subchunkSize);
                        bytesWritten += ma_dr_wav__write_or_count(pWav, pMetadata->data.unknown.pData, subchunkSize);
                    }
                } break;
                default: break;
            }
            if ((subchunkSize % 2) != 0) {
                bytesWritten += ma_dr_wav__write_or_count_byte(pWav, 0);
            }
        }
    }
    MA_DR_WAV_ASSERT((bytesWritten % 2) == 0);
    return bytesWritten;
}
MA_PRIVATE ma_uint32 ma_dr_wav__riff_chunk_size_riff(ma_uint64 dataChunkSize, ma_dr_wav_metadata* pMetadata, ma_uint32 metadataCount)
{
    ma_uint64 chunkSize = 4 + 24 + (ma_uint64)ma_dr_wav__write_or_count_metadata(NULL, pMetadata, metadataCount) + 8 + dataChunkSize + ma_dr_wav__chunk_padding_size_riff(dataChunkSize);
    if (chunkSize > 0xFFFFFFFFUL) {
        chunkSize = 0xFFFFFFFFUL;
    }
    return (ma_uint32)chunkSize;
}
MA_PRIVATE ma_uint32 ma_dr_wav__data_chunk_size_riff(ma_uint64 dataChunkSize)
{
    if (dataChunkSize <= 0xFFFFFFFFUL) {
        return (ma_uint32)dataChunkSize;
    } else {
        return 0xFFFFFFFFUL;
    }
}
MA_PRIVATE ma_uint64 ma_dr_wav__riff_chunk_size_w64(ma_uint64 dataChunkSize)
{
    ma_uint64 dataSubchunkPaddingSize = ma_dr_wav__chunk_padding_size_w64(dataChunkSize);
    return 80 + 24 + dataChunkSize + dataSubchunkPaddingSize;
}
MA_PRIVATE ma_uint64 ma_dr_wav__data_chunk_size_w64(ma_uint64 dataChunkSize)
{
    return 24 + dataChunkSize;
}
MA_PRIVATE ma_uint64 ma_dr_wav__riff_chunk_size_rf64(ma_uint64 dataChunkSize, ma_dr_wav_metadata *metadata, ma_uint32 numMetadata)
{
    ma_uint64 chunkSize = 4 + 36 + 24 + (ma_uint64)ma_dr_wav__write_or_count_metadata(NULL, metadata, numMetadata) + 8 + dataChunkSize + ma_dr_wav__chunk_padding_size_riff(dataChunkSize);
    if (chunkSize > 0xFFFFFFFFUL) {
        chunkSize = 0xFFFFFFFFUL;
    }
    return chunkSize;
}
MA_PRIVATE ma_uint64 ma_dr_wav__data_chunk_size_rf64(ma_uint64 dataChunkSize)
{
    return dataChunkSize;
}
MA_PRIVATE ma_bool32 ma_dr_wav_preinit_write(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_bool32 isSequential, ma_dr_wav_write_proc onWrite, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pWav == NULL || onWrite == NULL) {
        return MA_FALSE;
    }
    if (!isSequential && onSeek == NULL) {
        return MA_FALSE;
    }
    if (pFormat->format == MA_DR_WAVE_FORMAT_EXTENSIBLE) {
        return MA_FALSE;
    }
    if (pFormat->format == MA_DR_WAVE_FORMAT_ADPCM || pFormat->format == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
        return MA_FALSE;
    }
    MA_DR_WAV_ZERO_MEMORY(pWav, sizeof(*pWav));
    pWav->onWrite   = onWrite;
    pWav->onSeek    = onSeek;
    pWav->pUserData = pUserData;
    pWav->allocationCallbacks = ma_dr_wav_copy_allocation_callbacks_or_defaults(pAllocationCallbacks);
    if (pWav->allocationCallbacks.onFree == NULL || (pWav->allocationCallbacks.onMalloc == NULL && pWav->allocationCallbacks.onRealloc == NULL)) {
        return MA_FALSE;
    }
    pWav->fmt.formatTag = (ma_uint16)pFormat->format;
    pWav->fmt.channels = (ma_uint16)pFormat->channels;
    pWav->fmt.sampleRate = pFormat->sampleRate;
    pWav->fmt.avgBytesPerSec = (ma_uint32)((pFormat->bitsPerSample * pFormat->sampleRate * pFormat->channels) / 8);
    pWav->fmt.blockAlign = (ma_uint16)((pFormat->channels * pFormat->bitsPerSample) / 8);
    pWav->fmt.bitsPerSample = (ma_uint16)pFormat->bitsPerSample;
    pWav->fmt.extendedSize = 0;
    pWav->isSequentialWrite = isSequential;
    return MA_TRUE;
}
MA_PRIVATE ma_bool32 ma_dr_wav_init_write__internal(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount)
{
    size_t runningPos = 0;
    ma_uint64 initialDataChunkSize = 0;
    ma_uint64 chunkSizeFMT;
    if (pWav->isSequentialWrite) {
        initialDataChunkSize = (totalSampleCount * pWav->fmt.bitsPerSample) / 8;
        if (pFormat->container == ma_dr_wav_container_riff) {
            if (initialDataChunkSize > (0xFFFFFFFFUL - 36)) {
                return MA_FALSE;
            }
        }
    }
    pWav->dataChunkDataSizeTargetWrite = initialDataChunkSize;
    if (pFormat->container == ma_dr_wav_container_riff) {
        ma_uint32 chunkSizeRIFF = 28 + (ma_uint32)initialDataChunkSize;
        runningPos += ma_dr_wav__write(pWav, "RIFF", 4);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, chunkSizeRIFF);
        runningPos += ma_dr_wav__write(pWav, "WAVE", 4);
    } else if (pFormat->container == ma_dr_wav_container_w64) {
        ma_uint64 chunkSizeRIFF = 80 + 24 + initialDataChunkSize;
        runningPos += ma_dr_wav__write(pWav, ma_dr_wavGUID_W64_RIFF, 16);
        runningPos += ma_dr_wav__write_u64ne_to_le(pWav, chunkSizeRIFF);
        runningPos += ma_dr_wav__write(pWav, ma_dr_wavGUID_W64_WAVE, 16);
    } else if (pFormat->container == ma_dr_wav_container_rf64) {
        runningPos += ma_dr_wav__write(pWav, "RF64", 4);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, 0xFFFFFFFF);
        runningPos += ma_dr_wav__write(pWav, "WAVE", 4);
    } else {
        return MA_FALSE;
    }
    if (pFormat->container == ma_dr_wav_container_rf64) {
        ma_uint32 initialds64ChunkSize = 28;
        ma_uint64 initialRiffChunkSize = 8 + initialds64ChunkSize + initialDataChunkSize;
        runningPos += ma_dr_wav__write(pWav, "ds64", 4);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, initialds64ChunkSize);
        runningPos += ma_dr_wav__write_u64ne_to_le(pWav, initialRiffChunkSize);
        runningPos += ma_dr_wav__write_u64ne_to_le(pWav, initialDataChunkSize);
        runningPos += ma_dr_wav__write_u64ne_to_le(pWav, totalSampleCount);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, 0);
    }
    if (pFormat->container == ma_dr_wav_container_riff || pFormat->container == ma_dr_wav_container_rf64) {
        chunkSizeFMT = 16;
        runningPos += ma_dr_wav__write(pWav, "fmt ", 4);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, (ma_uint32)chunkSizeFMT);
    } else if (pFormat->container == ma_dr_wav_container_w64) {
        chunkSizeFMT = 40;
        runningPos += ma_dr_wav__write(pWav, ma_dr_wavGUID_W64_FMT, 16);
        runningPos += ma_dr_wav__write_u64ne_to_le(pWav, chunkSizeFMT);
    }
    runningPos += ma_dr_wav__write_u16ne_to_le(pWav, pWav->fmt.formatTag);
    runningPos += ma_dr_wav__write_u16ne_to_le(pWav, pWav->fmt.channels);
    runningPos += ma_dr_wav__write_u32ne_to_le(pWav, pWav->fmt.sampleRate);
    runningPos += ma_dr_wav__write_u32ne_to_le(pWav, pWav->fmt.avgBytesPerSec);
    runningPos += ma_dr_wav__write_u16ne_to_le(pWav, pWav->fmt.blockAlign);
    runningPos += ma_dr_wav__write_u16ne_to_le(pWav, pWav->fmt.bitsPerSample);
    if (!pWav->isSequentialWrite && pWav->pMetadata != NULL && pWav->metadataCount > 0 && (pFormat->container == ma_dr_wav_container_riff || pFormat->container == ma_dr_wav_container_rf64)) {
        runningPos += ma_dr_wav__write_or_count_metadata(pWav, pWav->pMetadata, pWav->metadataCount);
    }
    pWav->dataChunkDataPos = runningPos;
    if (pFormat->container == ma_dr_wav_container_riff) {
        ma_uint32 chunkSizeDATA = (ma_uint32)initialDataChunkSize;
        runningPos += ma_dr_wav__write(pWav, "data", 4);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, chunkSizeDATA);
    } else if (pFormat->container == ma_dr_wav_container_w64) {
        ma_uint64 chunkSizeDATA = 24 + initialDataChunkSize;
        runningPos += ma_dr_wav__write(pWav, ma_dr_wavGUID_W64_DATA, 16);
        runningPos += ma_dr_wav__write_u64ne_to_le(pWav, chunkSizeDATA);
    } else if (pFormat->container == ma_dr_wav_container_rf64) {
        runningPos += ma_dr_wav__write(pWav, "data", 4);
        runningPos += ma_dr_wav__write_u32ne_to_le(pWav, 0xFFFFFFFF);
    }
    pWav->container = pFormat->container;
    pWav->channels = (ma_uint16)pFormat->channels;
    pWav->sampleRate = pFormat->sampleRate;
    pWav->bitsPerSample = (ma_uint16)pFormat->bitsPerSample;
    pWav->translatedFormatTag = (ma_uint16)pFormat->format;
    pWav->dataChunkDataPos = runningPos;
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_wav_init_write(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_dr_wav_write_proc onWrite, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (!ma_dr_wav_preinit_write(pWav, pFormat, MA_FALSE, onWrite, onSeek, pUserData, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_write__internal(pWav, pFormat, 0);
}
MA_API ma_bool32 ma_dr_wav_init_write_sequential(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, ma_dr_wav_write_proc onWrite, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (!ma_dr_wav_preinit_write(pWav, pFormat, MA_TRUE, onWrite, NULL, pUserData, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_write__internal(pWav, pFormat, totalSampleCount);
}
MA_API ma_bool32 ma_dr_wav_init_write_sequential_pcm_frames(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, ma_dr_wav_write_proc onWrite, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFormat == NULL) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_write_sequential(pWav, pFormat, totalPCMFrameCount*pFormat->channels, onWrite, pUserData, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_write_with_metadata(ma_dr_wav* pWav, const ma_dr_wav_data_format* pFormat, ma_dr_wav_write_proc onWrite, ma_dr_wav_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks, ma_dr_wav_metadata* pMetadata, ma_uint32 metadataCount)
{
    if (!ma_dr_wav_preinit_write(pWav, pFormat, MA_FALSE, onWrite, onSeek, pUserData, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    pWav->pMetadata     = pMetadata;
    pWav->metadataCount = metadataCount;
    return ma_dr_wav_init_write__internal(pWav, pFormat, 0);
}
MA_API ma_uint64 ma_dr_wav_target_write_size_bytes(const ma_dr_wav_data_format* pFormat, ma_uint64 totalFrameCount, ma_dr_wav_metadata* pMetadata, ma_uint32 metadataCount)
{
    ma_uint64 targetDataSizeBytes = (ma_uint64)((ma_int64)totalFrameCount * pFormat->channels * pFormat->bitsPerSample/8.0);
    ma_uint64 riffChunkSizeBytes;
    ma_uint64 fileSizeBytes = 0;
    if (pFormat->container == ma_dr_wav_container_riff) {
        riffChunkSizeBytes = ma_dr_wav__riff_chunk_size_riff(targetDataSizeBytes, pMetadata, metadataCount);
        fileSizeBytes = (8 + riffChunkSizeBytes);
    } else if (pFormat->container == ma_dr_wav_container_w64) {
        riffChunkSizeBytes = ma_dr_wav__riff_chunk_size_w64(targetDataSizeBytes);
        fileSizeBytes = riffChunkSizeBytes;
    } else if (pFormat->container == ma_dr_wav_container_rf64) {
        riffChunkSizeBytes = ma_dr_wav__riff_chunk_size_rf64(targetDataSizeBytes, pMetadata, metadataCount);
        fileSizeBytes = (8 + riffChunkSizeBytes);
    }
    return fileSizeBytes;
}
#ifndef MA_DR_WAV_NO_STDIO
MA_PRIVATE size_t ma_dr_wav__on_read_stdio(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    return fread(pBufferOut, 1, bytesToRead, (FILE*)pUserData);
}
MA_PRIVATE size_t ma_dr_wav__on_write_stdio(void* pUserData, const void* pData, size_t bytesToWrite)
{
    return fwrite(pData, 1, bytesToWrite, (FILE*)pUserData);
}
MA_PRIVATE ma_bool32 ma_dr_wav__on_seek_stdio(void* pUserData, int offset, ma_dr_wav_seek_origin origin)
{
    return fseek((FILE*)pUserData, offset, (origin == ma_dr_wav_seek_origin_current) ? SEEK_CUR : SEEK_SET) == 0;
}
MA_API ma_bool32 ma_dr_wav_init_file(ma_dr_wav* pWav, const char* filename, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_file_ex(pWav, filename, NULL, NULL, 0, pAllocationCallbacks);
}
MA_PRIVATE ma_bool32 ma_dr_wav_init_file__internal_FILE(ma_dr_wav* pWav, FILE* pFile, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_bool32 result;
    result = ma_dr_wav_preinit(pWav, ma_dr_wav__on_read_stdio, ma_dr_wav__on_seek_stdio, (void*)pFile, pAllocationCallbacks);
    if (result != MA_TRUE) {
        fclose(pFile);
        return result;
    }
    result = ma_dr_wav_init__internal(pWav, onChunk, pChunkUserData, flags);
    if (result != MA_TRUE) {
        fclose(pFile);
        return result;
    }
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_wav_init_file_ex(ma_dr_wav* pWav, const char* filename, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    FILE* pFile;
    if (ma_fopen(&pFile, filename, "rb") != MA_SUCCESS) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file__internal_FILE(pWav, pFile, onChunk, pChunkUserData, flags, pAllocationCallbacks);
}
#ifndef MA_DR_WAV_NO_WCHAR
MA_API ma_bool32 ma_dr_wav_init_file_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_file_ex_w(pWav, filename, NULL, NULL, 0, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_file_ex_w(ma_dr_wav* pWav, const wchar_t* filename, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    FILE* pFile;
    if (ma_wfopen(&pFile, filename, L"rb", pAllocationCallbacks) != MA_SUCCESS) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file__internal_FILE(pWav, pFile, onChunk, pChunkUserData, flags, pAllocationCallbacks);
}
#endif
MA_API ma_bool32 ma_dr_wav_init_file_with_metadata(ma_dr_wav* pWav, const char* filename, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    FILE* pFile;
    if (ma_fopen(&pFile, filename, "rb") != MA_SUCCESS) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file__internal_FILE(pWav, pFile, NULL, NULL, flags | MA_DR_WAV_WITH_METADATA, pAllocationCallbacks);
}
#ifndef MA_DR_WAV_NO_WCHAR
MA_API ma_bool32 ma_dr_wav_init_file_with_metadata_w(ma_dr_wav* pWav, const wchar_t* filename, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    FILE* pFile;
    if (ma_wfopen(&pFile, filename, L"rb", pAllocationCallbacks) != MA_SUCCESS) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file__internal_FILE(pWav, pFile, NULL, NULL, flags | MA_DR_WAV_WITH_METADATA, pAllocationCallbacks);
}
#endif
MA_PRIVATE ma_bool32 ma_dr_wav_init_file_write__internal_FILE(ma_dr_wav* pWav, FILE* pFile, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, ma_bool32 isSequential, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_bool32 result;
    result = ma_dr_wav_preinit_write(pWav, pFormat, isSequential, ma_dr_wav__on_write_stdio, ma_dr_wav__on_seek_stdio, (void*)pFile, pAllocationCallbacks);
    if (result != MA_TRUE) {
        fclose(pFile);
        return result;
    }
    result = ma_dr_wav_init_write__internal(pWav, pFormat, totalSampleCount);
    if (result != MA_TRUE) {
        fclose(pFile);
        return result;
    }
    return MA_TRUE;
}
MA_PRIVATE ma_bool32 ma_dr_wav_init_file_write__internal(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, ma_bool32 isSequential, const ma_allocation_callbacks* pAllocationCallbacks)
{
    FILE* pFile;
    if (ma_fopen(&pFile, filename, "wb") != MA_SUCCESS) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file_write__internal_FILE(pWav, pFile, pFormat, totalSampleCount, isSequential, pAllocationCallbacks);
}
#ifndef MA_DR_WAV_NO_WCHAR
MA_PRIVATE ma_bool32 ma_dr_wav_init_file_write_w__internal(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, ma_bool32 isSequential, const ma_allocation_callbacks* pAllocationCallbacks)
{
    FILE* pFile;
    if (ma_wfopen(&pFile, filename, L"wb", pAllocationCallbacks) != MA_SUCCESS) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file_write__internal_FILE(pWav, pFile, pFormat, totalSampleCount, isSequential, pAllocationCallbacks);
}
#endif
MA_API ma_bool32 ma_dr_wav_init_file_write(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_file_write__internal(pWav, filename, pFormat, 0, MA_FALSE, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_file_write__internal(pWav, filename, pFormat, totalSampleCount, MA_TRUE, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential_pcm_frames(ma_dr_wav* pWav, const char* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFormat == NULL) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file_write_sequential(pWav, filename, pFormat, totalPCMFrameCount*pFormat->channels, pAllocationCallbacks);
}
#ifndef MA_DR_WAV_NO_WCHAR
MA_API ma_bool32 ma_dr_wav_init_file_write_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_file_write_w__internal(pWav, filename, pFormat, 0, MA_FALSE, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_file_write_w__internal(pWav, filename, pFormat, totalSampleCount, MA_TRUE, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_file_write_sequential_pcm_frames_w(ma_dr_wav* pWav, const wchar_t* filename, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFormat == NULL) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_file_write_sequential_w(pWav, filename, pFormat, totalPCMFrameCount*pFormat->channels, pAllocationCallbacks);
}
#endif
#endif
MA_PRIVATE size_t ma_dr_wav__on_read_memory(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    ma_dr_wav* pWav = (ma_dr_wav*)pUserData;
    size_t bytesRemaining;
    MA_DR_WAV_ASSERT(pWav != NULL);
    MA_DR_WAV_ASSERT(pWav->memoryStream.dataSize >= pWav->memoryStream.currentReadPos);
    bytesRemaining = pWav->memoryStream.dataSize - pWav->memoryStream.currentReadPos;
    if (bytesToRead > bytesRemaining) {
        bytesToRead = bytesRemaining;
    }
    if (bytesToRead > 0) {
        MA_DR_WAV_COPY_MEMORY(pBufferOut, pWav->memoryStream.data + pWav->memoryStream.currentReadPos, bytesToRead);
        pWav->memoryStream.currentReadPos += bytesToRead;
    }
    return bytesToRead;
}
MA_PRIVATE ma_bool32 ma_dr_wav__on_seek_memory(void* pUserData, int offset, ma_dr_wav_seek_origin origin)
{
    ma_dr_wav* pWav = (ma_dr_wav*)pUserData;
    MA_DR_WAV_ASSERT(pWav != NULL);
    if (origin == ma_dr_wav_seek_origin_current) {
        if (offset > 0) {
            if (pWav->memoryStream.currentReadPos + offset > pWav->memoryStream.dataSize) {
                return MA_FALSE;
            }
        } else {
            if (pWav->memoryStream.currentReadPos < (size_t)-offset) {
                return MA_FALSE;
            }
        }
        pWav->memoryStream.currentReadPos += offset;
    } else {
        if ((ma_uint32)offset <= pWav->memoryStream.dataSize) {
            pWav->memoryStream.currentReadPos = offset;
        } else {
            return MA_FALSE;
        }
    }
    return MA_TRUE;
}
MA_PRIVATE size_t ma_dr_wav__on_write_memory(void* pUserData, const void* pDataIn, size_t bytesToWrite)
{
    ma_dr_wav* pWav = (ma_dr_wav*)pUserData;
    size_t bytesRemaining;
    MA_DR_WAV_ASSERT(pWav != NULL);
    MA_DR_WAV_ASSERT(pWav->memoryStreamWrite.dataCapacity >= pWav->memoryStreamWrite.currentWritePos);
    bytesRemaining = pWav->memoryStreamWrite.dataCapacity - pWav->memoryStreamWrite.currentWritePos;
    if (bytesRemaining < bytesToWrite) {
        void* pNewData;
        size_t newDataCapacity = (pWav->memoryStreamWrite.dataCapacity == 0) ? 256 : pWav->memoryStreamWrite.dataCapacity * 2;
        if ((newDataCapacity - pWav->memoryStreamWrite.currentWritePos) < bytesToWrite) {
            newDataCapacity = pWav->memoryStreamWrite.currentWritePos + bytesToWrite;
        }
        pNewData = ma_dr_wav__realloc_from_callbacks(*pWav->memoryStreamWrite.ppData, newDataCapacity, pWav->memoryStreamWrite.dataCapacity, &pWav->allocationCallbacks);
        if (pNewData == NULL) {
            return 0;
        }
        *pWav->memoryStreamWrite.ppData = pNewData;
        pWav->memoryStreamWrite.dataCapacity = newDataCapacity;
    }
    MA_DR_WAV_COPY_MEMORY(((ma_uint8*)(*pWav->memoryStreamWrite.ppData)) + pWav->memoryStreamWrite.currentWritePos, pDataIn, bytesToWrite);
    pWav->memoryStreamWrite.currentWritePos += bytesToWrite;
    if (pWav->memoryStreamWrite.dataSize < pWav->memoryStreamWrite.currentWritePos) {
        pWav->memoryStreamWrite.dataSize = pWav->memoryStreamWrite.currentWritePos;
    }
    *pWav->memoryStreamWrite.pDataSize = pWav->memoryStreamWrite.dataSize;
    return bytesToWrite;
}
MA_PRIVATE ma_bool32 ma_dr_wav__on_seek_memory_write(void* pUserData, int offset, ma_dr_wav_seek_origin origin)
{
    ma_dr_wav* pWav = (ma_dr_wav*)pUserData;
    MA_DR_WAV_ASSERT(pWav != NULL);
    if (origin == ma_dr_wav_seek_origin_current) {
        if (offset > 0) {
            if (pWav->memoryStreamWrite.currentWritePos + offset > pWav->memoryStreamWrite.dataSize) {
                offset = (int)(pWav->memoryStreamWrite.dataSize - pWav->memoryStreamWrite.currentWritePos);
            }
        } else {
            if (pWav->memoryStreamWrite.currentWritePos < (size_t)-offset) {
                offset = -(int)pWav->memoryStreamWrite.currentWritePos;
            }
        }
        pWav->memoryStreamWrite.currentWritePos += offset;
    } else {
        if ((ma_uint32)offset <= pWav->memoryStreamWrite.dataSize) {
            pWav->memoryStreamWrite.currentWritePos = offset;
        } else {
            pWav->memoryStreamWrite.currentWritePos = pWav->memoryStreamWrite.dataSize;
        }
    }
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_wav_init_memory(ma_dr_wav* pWav, const void* data, size_t dataSize, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_memory_ex(pWav, data, dataSize, NULL, NULL, 0, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_memory_ex(ma_dr_wav* pWav, const void* data, size_t dataSize, ma_dr_wav_chunk_proc onChunk, void* pChunkUserData, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (data == NULL || dataSize == 0) {
        return MA_FALSE;
    }
    if (!ma_dr_wav_preinit(pWav, ma_dr_wav__on_read_memory, ma_dr_wav__on_seek_memory, pWav, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    pWav->memoryStream.data = (const ma_uint8*)data;
    pWav->memoryStream.dataSize = dataSize;
    pWav->memoryStream.currentReadPos = 0;
    return ma_dr_wav_init__internal(pWav, onChunk, pChunkUserData, flags);
}
MA_API ma_bool32 ma_dr_wav_init_memory_with_metadata(ma_dr_wav* pWav, const void* data, size_t dataSize, ma_uint32 flags, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (data == NULL || dataSize == 0) {
        return MA_FALSE;
    }
    if (!ma_dr_wav_preinit(pWav, ma_dr_wav__on_read_memory, ma_dr_wav__on_seek_memory, pWav, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    pWav->memoryStream.data = (const ma_uint8*)data;
    pWav->memoryStream.dataSize = dataSize;
    pWav->memoryStream.currentReadPos = 0;
    return ma_dr_wav_init__internal(pWav, NULL, NULL, flags | MA_DR_WAV_WITH_METADATA);
}
MA_PRIVATE ma_bool32 ma_dr_wav_init_memory_write__internal(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, ma_bool32 isSequential, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (ppData == NULL || pDataSize == NULL) {
        return MA_FALSE;
    }
    *ppData = NULL;
    *pDataSize = 0;
    if (!ma_dr_wav_preinit_write(pWav, pFormat, isSequential, ma_dr_wav__on_write_memory, ma_dr_wav__on_seek_memory_write, pWav, pAllocationCallbacks)) {
        return MA_FALSE;
    }
    pWav->memoryStreamWrite.ppData = ppData;
    pWav->memoryStreamWrite.pDataSize = pDataSize;
    pWav->memoryStreamWrite.dataSize = 0;
    pWav->memoryStreamWrite.dataCapacity = 0;
    pWav->memoryStreamWrite.currentWritePos = 0;
    return ma_dr_wav_init_write__internal(pWav, pFormat, totalSampleCount);
}
MA_API ma_bool32 ma_dr_wav_init_memory_write(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_memory_write__internal(pWav, ppData, pDataSize, pFormat, 0, MA_FALSE, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_memory_write_sequential(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, ma_uint64 totalSampleCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_wav_init_memory_write__internal(pWav, ppData, pDataSize, pFormat, totalSampleCount, MA_TRUE, pAllocationCallbacks);
}
MA_API ma_bool32 ma_dr_wav_init_memory_write_sequential_pcm_frames(ma_dr_wav* pWav, void** ppData, size_t* pDataSize, const ma_dr_wav_data_format* pFormat, ma_uint64 totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pFormat == NULL) {
        return MA_FALSE;
    }
    return ma_dr_wav_init_memory_write_sequential(pWav, ppData, pDataSize, pFormat, totalPCMFrameCount*pFormat->channels, pAllocationCallbacks);
}
MA_API ma_result ma_dr_wav_uninit(ma_dr_wav* pWav)
{
    ma_result result = MA_SUCCESS;
    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }
    if (pWav->onWrite != NULL) {
        ma_uint32 paddingSize = 0;
        if (pWav->container == ma_dr_wav_container_riff || pWav->container == ma_dr_wav_container_rf64) {
            paddingSize = ma_dr_wav__chunk_padding_size_riff(pWav->dataChunkDataSize);
        } else {
            paddingSize = ma_dr_wav__chunk_padding_size_w64(pWav->dataChunkDataSize);
        }
        if (paddingSize > 0) {
            ma_uint64 paddingData = 0;
            ma_dr_wav__write(pWav, &paddingData, paddingSize);
        }
        if (pWav->onSeek && !pWav->isSequentialWrite) {
            if (pWav->container == ma_dr_wav_container_riff) {
                if (pWav->onSeek(pWav->pUserData, 4, ma_dr_wav_seek_origin_start)) {
                    ma_uint32 riffChunkSize = ma_dr_wav__riff_chunk_size_riff(pWav->dataChunkDataSize, pWav->pMetadata, pWav->metadataCount);
                    ma_dr_wav__write_u32ne_to_le(pWav, riffChunkSize);
                }
                if (pWav->onSeek(pWav->pUserData, (int)pWav->dataChunkDataPos - 4, ma_dr_wav_seek_origin_start)) {
                    ma_uint32 dataChunkSize = ma_dr_wav__data_chunk_size_riff(pWav->dataChunkDataSize);
                    ma_dr_wav__write_u32ne_to_le(pWav, dataChunkSize);
                }
            } else if (pWav->container == ma_dr_wav_container_w64) {
                if (pWav->onSeek(pWav->pUserData, 16, ma_dr_wav_seek_origin_start)) {
                    ma_uint64 riffChunkSize = ma_dr_wav__riff_chunk_size_w64(pWav->dataChunkDataSize);
                    ma_dr_wav__write_u64ne_to_le(pWav, riffChunkSize);
                }
                if (pWav->onSeek(pWav->pUserData, (int)pWav->dataChunkDataPos - 8, ma_dr_wav_seek_origin_start)) {
                    ma_uint64 dataChunkSize = ma_dr_wav__data_chunk_size_w64(pWav->dataChunkDataSize);
                    ma_dr_wav__write_u64ne_to_le(pWav, dataChunkSize);
                }
            } else if (pWav->container == ma_dr_wav_container_rf64) {
                int ds64BodyPos = 12 + 8;
                if (pWav->onSeek(pWav->pUserData, ds64BodyPos + 0, ma_dr_wav_seek_origin_start)) {
                    ma_uint64 riffChunkSize = ma_dr_wav__riff_chunk_size_rf64(pWav->dataChunkDataSize, pWav->pMetadata, pWav->metadataCount);
                    ma_dr_wav__write_u64ne_to_le(pWav, riffChunkSize);
                }
                if (pWav->onSeek(pWav->pUserData, ds64BodyPos + 8, ma_dr_wav_seek_origin_start)) {
                    ma_uint64 dataChunkSize = ma_dr_wav__data_chunk_size_rf64(pWav->dataChunkDataSize);
                    ma_dr_wav__write_u64ne_to_le(pWav, dataChunkSize);
                }
            }
        }
        if (pWav->isSequentialWrite) {
            if (pWav->dataChunkDataSize != pWav->dataChunkDataSizeTargetWrite) {
                result = MA_INVALID_FILE;
            }
        }
    } else {
        ma_dr_wav_free(pWav->pMetadata, &pWav->allocationCallbacks);
    }
#ifndef MA_DR_WAV_NO_STDIO
    if (pWav->onRead == ma_dr_wav__on_read_stdio || pWav->onWrite == ma_dr_wav__on_write_stdio) {
        fclose((FILE*)pWav->pUserData);
    }
#endif
    return result;
}
MA_API size_t ma_dr_wav_read_raw(ma_dr_wav* pWav, size_t bytesToRead, void* pBufferOut)
{
    size_t bytesRead;
    ma_uint32 bytesPerFrame;
    if (pWav == NULL || bytesToRead == 0) {
        return 0;
    }
    if (bytesToRead > pWav->bytesRemaining) {
        bytesToRead = (size_t)pWav->bytesRemaining;
    }
    if (bytesToRead == 0) {
        return 0;
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    if (pBufferOut != NULL) {
        bytesRead = pWav->onRead(pWav->pUserData, pBufferOut, bytesToRead);
    } else {
        bytesRead = 0;
        while (bytesRead < bytesToRead) {
            size_t bytesToSeek = (bytesToRead - bytesRead);
            if (bytesToSeek > 0x7FFFFFFF) {
                bytesToSeek = 0x7FFFFFFF;
            }
            if (pWav->onSeek(pWav->pUserData, (int)bytesToSeek, ma_dr_wav_seek_origin_current) == MA_FALSE) {
                break;
            }
            bytesRead += bytesToSeek;
        }
        while (bytesRead < bytesToRead) {
            ma_uint8 buffer[4096];
            size_t bytesSeeked;
            size_t bytesToSeek = (bytesToRead - bytesRead);
            if (bytesToSeek > sizeof(buffer)) {
                bytesToSeek = sizeof(buffer);
            }
            bytesSeeked = pWav->onRead(pWav->pUserData, buffer, bytesToSeek);
            bytesRead += bytesSeeked;
            if (bytesSeeked < bytesToSeek) {
                break;
            }
        }
    }
    pWav->readCursorInPCMFrames += bytesRead / bytesPerFrame;
    pWav->bytesRemaining -= bytesRead;
    return bytesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_le(ma_dr_wav* pWav, ma_uint64 framesToRead, void* pBufferOut)
{
    ma_uint32 bytesPerFrame;
    ma_uint64 bytesToRead;
    ma_uint64 framesRemainingInFile;
    if (pWav == NULL || framesToRead == 0) {
        return 0;
    }
    if (ma_dr_wav__is_compressed_format_tag(pWav->translatedFormatTag)) {
        return 0;
    }
    framesRemainingInFile = pWav->totalPCMFrameCount - pWav->readCursorInPCMFrames;
    if (framesToRead > framesRemainingInFile) {
        framesToRead = framesRemainingInFile;
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesToRead = framesToRead * bytesPerFrame;
    if (bytesToRead > MA_SIZE_MAX) {
        bytesToRead = (MA_SIZE_MAX / bytesPerFrame) * bytesPerFrame;
    }
    if (bytesToRead == 0) {
        return 0;
    }
    return ma_dr_wav_read_raw(pWav, (size_t)bytesToRead, pBufferOut) / bytesPerFrame;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_be(ma_dr_wav* pWav, ma_uint64 framesToRead, void* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_le(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL) {
        ma_uint32 bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
        if (bytesPerFrame == 0) {
            return 0;
        }
        ma_dr_wav__bswap_samples(pBufferOut, framesRead*pWav->channels, bytesPerFrame/pWav->channels);
    }
    return framesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames(ma_dr_wav* pWav, ma_uint64 framesToRead, void* pBufferOut)
{
    ma_uint64 framesRead = 0;
    if (ma_dr_wav_is_container_be(pWav->container)) {
        if (pWav->container != ma_dr_wav_container_aiff || pWav->aiff.isLE == MA_FALSE) {
            if (ma_dr_wav__is_little_endian()) {
                framesRead = ma_dr_wav_read_pcm_frames_be(pWav, framesToRead, pBufferOut);
            } else {
                framesRead = ma_dr_wav_read_pcm_frames_le(pWav, framesToRead, pBufferOut);
            }
            goto post_process;
        }
    }
    if (ma_dr_wav__is_little_endian()) {
        framesRead = ma_dr_wav_read_pcm_frames_le(pWav, framesToRead, pBufferOut);
    } else {
        framesRead = ma_dr_wav_read_pcm_frames_be(pWav, framesToRead, pBufferOut);
    }
    post_process:
    {
        if (pWav->container == ma_dr_wav_container_aiff && pWav->bitsPerSample == 8 && pWav->aiff.isUnsigned == MA_FALSE) {
            if (pBufferOut != NULL) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < framesRead * pWav->channels; iSample += 1) {
                    ((ma_uint8*)pBufferOut)[iSample] += 128;
                }
            }
        }
    }
    return framesRead;
}
MA_PRIVATE ma_bool32 ma_dr_wav_seek_to_first_pcm_frame(ma_dr_wav* pWav)
{
    if (pWav->onWrite != NULL) {
        return MA_FALSE;
    }
    if (!pWav->onSeek(pWav->pUserData, (int)pWav->dataChunkDataPos, ma_dr_wav_seek_origin_start)) {
        return MA_FALSE;
    }
    if (ma_dr_wav__is_compressed_format_tag(pWav->translatedFormatTag)) {
        if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM) {
            MA_DR_WAV_ZERO_OBJECT(&pWav->msadpcm);
        } else if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
            MA_DR_WAV_ZERO_OBJECT(&pWav->ima);
        } else {
            MA_DR_WAV_ASSERT(MA_FALSE);
        }
    }
    pWav->readCursorInPCMFrames = 0;
    pWav->bytesRemaining = pWav->dataChunkDataSize;
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_wav_seek_to_pcm_frame(ma_dr_wav* pWav, ma_uint64 targetFrameIndex)
{
    if (pWav == NULL || pWav->onSeek == NULL) {
        return MA_FALSE;
    }
    if (pWav->onWrite != NULL) {
        return MA_FALSE;
    }
    if (pWav->totalPCMFrameCount == 0) {
        return MA_TRUE;
    }
    if (targetFrameIndex > pWav->totalPCMFrameCount) {
        targetFrameIndex = pWav->totalPCMFrameCount;
    }
    if (ma_dr_wav__is_compressed_format_tag(pWav->translatedFormatTag)) {
        if (targetFrameIndex < pWav->readCursorInPCMFrames) {
            if (!ma_dr_wav_seek_to_first_pcm_frame(pWav)) {
                return MA_FALSE;
            }
        }
        if (targetFrameIndex > pWav->readCursorInPCMFrames) {
            ma_uint64 offsetInFrames = targetFrameIndex - pWav->readCursorInPCMFrames;
            ma_int16 devnull[2048];
            while (offsetInFrames > 0) {
                ma_uint64 framesRead = 0;
                ma_uint64 framesToRead = offsetInFrames;
                if (framesToRead > ma_dr_wav_countof(devnull)/pWav->channels) {
                    framesToRead = ma_dr_wav_countof(devnull)/pWav->channels;
                }
                if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM) {
                    framesRead = ma_dr_wav_read_pcm_frames_s16__msadpcm(pWav, framesToRead, devnull);
                } else if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
                    framesRead = ma_dr_wav_read_pcm_frames_s16__ima(pWav, framesToRead, devnull);
                } else {
                    MA_DR_WAV_ASSERT(MA_FALSE);
                }
                if (framesRead != framesToRead) {
                    return MA_FALSE;
                }
                offsetInFrames -= framesRead;
            }
        }
    } else {
        ma_uint64 totalSizeInBytes;
        ma_uint64 currentBytePos;
        ma_uint64 targetBytePos;
        ma_uint64 offset;
        ma_uint32 bytesPerFrame;
        bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
        if (bytesPerFrame == 0) {
            return MA_FALSE;
        }
        totalSizeInBytes = pWav->totalPCMFrameCount * bytesPerFrame;
        currentBytePos = totalSizeInBytes - pWav->bytesRemaining;
        targetBytePos  = targetFrameIndex * bytesPerFrame;
        if (currentBytePos < targetBytePos) {
            offset = (targetBytePos - currentBytePos);
        } else {
            if (!ma_dr_wav_seek_to_first_pcm_frame(pWav)) {
                return MA_FALSE;
            }
            offset = targetBytePos;
        }
        while (offset > 0) {
            int offset32 = ((offset > INT_MAX) ? INT_MAX : (int)offset);
            if (!pWav->onSeek(pWav->pUserData, offset32, ma_dr_wav_seek_origin_current)) {
                return MA_FALSE;
            }
            pWav->readCursorInPCMFrames += offset32 / bytesPerFrame;
            pWav->bytesRemaining        -= offset32;
            offset                      -= offset32;
        }
    }
    return MA_TRUE;
}
MA_API ma_result ma_dr_wav_get_cursor_in_pcm_frames(ma_dr_wav* pWav, ma_uint64* pCursor)
{
    if (pCursor == NULL) {
        return MA_INVALID_ARGS;
    }
    *pCursor = 0;
    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }
    *pCursor = pWav->readCursorInPCMFrames;
    return MA_SUCCESS;
}
MA_API ma_result ma_dr_wav_get_length_in_pcm_frames(ma_dr_wav* pWav, ma_uint64* pLength)
{
    if (pLength == NULL) {
        return MA_INVALID_ARGS;
    }
    *pLength = 0;
    if (pWav == NULL) {
        return MA_INVALID_ARGS;
    }
    *pLength = pWav->totalPCMFrameCount;
    return MA_SUCCESS;
}
MA_API size_t ma_dr_wav_write_raw(ma_dr_wav* pWav, size_t bytesToWrite, const void* pData)
{
    size_t bytesWritten;
    if (pWav == NULL || bytesToWrite == 0 || pData == NULL) {
        return 0;
    }
    bytesWritten = pWav->onWrite(pWav->pUserData, pData, bytesToWrite);
    pWav->dataChunkDataSize += bytesWritten;
    return bytesWritten;
}
MA_API ma_uint64 ma_dr_wav_write_pcm_frames_le(ma_dr_wav* pWav, ma_uint64 framesToWrite, const void* pData)
{
    ma_uint64 bytesToWrite;
    ma_uint64 bytesWritten;
    const ma_uint8* pRunningData;
    if (pWav == NULL || framesToWrite == 0 || pData == NULL) {
        return 0;
    }
    bytesToWrite = ((framesToWrite * pWav->channels * pWav->bitsPerSample) / 8);
    if (bytesToWrite > MA_SIZE_MAX) {
        return 0;
    }
    bytesWritten = 0;
    pRunningData = (const ma_uint8*)pData;
    while (bytesToWrite > 0) {
        size_t bytesJustWritten;
        ma_uint64 bytesToWriteThisIteration;
        bytesToWriteThisIteration = bytesToWrite;
        MA_DR_WAV_ASSERT(bytesToWriteThisIteration <= MA_SIZE_MAX);
        bytesJustWritten = ma_dr_wav_write_raw(pWav, (size_t)bytesToWriteThisIteration, pRunningData);
        if (bytesJustWritten == 0) {
            break;
        }
        bytesToWrite -= bytesJustWritten;
        bytesWritten += bytesJustWritten;
        pRunningData += bytesJustWritten;
    }
    return (bytesWritten * 8) / pWav->bitsPerSample / pWav->channels;
}
MA_API ma_uint64 ma_dr_wav_write_pcm_frames_be(ma_dr_wav* pWav, ma_uint64 framesToWrite, const void* pData)
{
    ma_uint64 bytesToWrite;
    ma_uint64 bytesWritten;
    ma_uint32 bytesPerSample;
    const ma_uint8* pRunningData;
    if (pWav == NULL || framesToWrite == 0 || pData == NULL) {
        return 0;
    }
    bytesToWrite = ((framesToWrite * pWav->channels * pWav->bitsPerSample) / 8);
    if (bytesToWrite > MA_SIZE_MAX) {
        return 0;
    }
    bytesWritten = 0;
    pRunningData = (const ma_uint8*)pData;
    bytesPerSample = ma_dr_wav_get_bytes_per_pcm_frame(pWav) / pWav->channels;
    if (bytesPerSample == 0) {
        return 0;
    }
    while (bytesToWrite > 0) {
        ma_uint8 temp[4096];
        ma_uint32 sampleCount;
        size_t bytesJustWritten;
        ma_uint64 bytesToWriteThisIteration;
        bytesToWriteThisIteration = bytesToWrite;
        MA_DR_WAV_ASSERT(bytesToWriteThisIteration <= MA_SIZE_MAX);
        sampleCount = sizeof(temp)/bytesPerSample;
        if (bytesToWriteThisIteration > ((ma_uint64)sampleCount)*bytesPerSample) {
            bytesToWriteThisIteration = ((ma_uint64)sampleCount)*bytesPerSample;
        }
        MA_DR_WAV_COPY_MEMORY(temp, pRunningData, (size_t)bytesToWriteThisIteration);
        ma_dr_wav__bswap_samples(temp, sampleCount, bytesPerSample);
        bytesJustWritten = ma_dr_wav_write_raw(pWav, (size_t)bytesToWriteThisIteration, temp);
        if (bytesJustWritten == 0) {
            break;
        }
        bytesToWrite -= bytesJustWritten;
        bytesWritten += bytesJustWritten;
        pRunningData += bytesJustWritten;
    }
    return (bytesWritten * 8) / pWav->bitsPerSample / pWav->channels;
}
MA_API ma_uint64 ma_dr_wav_write_pcm_frames(ma_dr_wav* pWav, ma_uint64 framesToWrite, const void* pData)
{
    if (ma_dr_wav__is_little_endian()) {
        return ma_dr_wav_write_pcm_frames_le(pWav, framesToWrite, pData);
    } else {
        return ma_dr_wav_write_pcm_frames_be(pWav, framesToWrite, pData);
    }
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__msadpcm(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 totalFramesRead = 0;
    static ma_int32 adaptationTable[] = {
        230, 230, 230, 230, 307, 409, 512, 614,
        768, 614, 512, 409, 307, 230, 230, 230
    };
    static ma_int32 coeff1Table[] = { 256, 512, 0, 192, 240, 460,  392 };
    static ma_int32 coeff2Table[] = { 0,  -256, 0, 64,  0,  -208, -232 };
    MA_DR_WAV_ASSERT(pWav != NULL);
    MA_DR_WAV_ASSERT(framesToRead > 0);
    while (pWav->readCursorInPCMFrames < pWav->totalPCMFrameCount) {
        MA_DR_WAV_ASSERT(framesToRead > 0);
        if (pWav->msadpcm.cachedFrameCount == 0 && pWav->msadpcm.bytesRemainingInBlock == 0) {
            if (pWav->channels == 1) {
                ma_uint8 header[7];
                if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) {
                    return totalFramesRead;
                }
                pWav->msadpcm.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header);
                pWav->msadpcm.predictor[0]     = header[0];
                pWav->msadpcm.delta[0]         = ma_dr_wav_bytes_to_s16(header + 1);
                pWav->msadpcm.prevFrames[0][1] = (ma_int32)ma_dr_wav_bytes_to_s16(header + 3);
                pWav->msadpcm.prevFrames[0][0] = (ma_int32)ma_dr_wav_bytes_to_s16(header + 5);
                pWav->msadpcm.cachedFrames[2]  = pWav->msadpcm.prevFrames[0][0];
                pWav->msadpcm.cachedFrames[3]  = pWav->msadpcm.prevFrames[0][1];
                pWav->msadpcm.cachedFrameCount = 2;
                if (pWav->msadpcm.predictor[0] >= ma_dr_wav_countof(coeff1Table)) {
                    return totalFramesRead;
                }
            } else {
                ma_uint8 header[14];
                if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) {
                    return totalFramesRead;
                }
                pWav->msadpcm.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header);
                pWav->msadpcm.predictor[0] = header[0];
                pWav->msadpcm.predictor[1] = header[1];
                pWav->msadpcm.delta[0] = ma_dr_wav_bytes_to_s16(header + 2);
                pWav->msadpcm.delta[1] = ma_dr_wav_bytes_to_s16(header + 4);
                pWav->msadpcm.prevFrames[0][1] = (ma_int32)ma_dr_wav_bytes_to_s16(header + 6);
                pWav->msadpcm.prevFrames[1][1] = (ma_int32)ma_dr_wav_bytes_to_s16(header + 8);
                pWav->msadpcm.prevFrames[0][0] = (ma_int32)ma_dr_wav_bytes_to_s16(header + 10);
                pWav->msadpcm.prevFrames[1][0] = (ma_int32)ma_dr_wav_bytes_to_s16(header + 12);
                pWav->msadpcm.cachedFrames[0] = pWav->msadpcm.prevFrames[0][0];
                pWav->msadpcm.cachedFrames[1] = pWav->msadpcm.prevFrames[1][0];
                pWav->msadpcm.cachedFrames[2] = pWav->msadpcm.prevFrames[0][1];
                pWav->msadpcm.cachedFrames[3] = pWav->msadpcm.prevFrames[1][1];
                pWav->msadpcm.cachedFrameCount = 2;
                if (pWav->msadpcm.predictor[0] >= ma_dr_wav_countof(coeff1Table) || pWav->msadpcm.predictor[1] >= ma_dr_wav_countof(coeff2Table)) {
                    return totalFramesRead;
                }
            }
        }
        while (framesToRead > 0 && pWav->msadpcm.cachedFrameCount > 0 && pWav->readCursorInPCMFrames < pWav->totalPCMFrameCount) {
            if (pBufferOut != NULL) {
                ma_uint32 iSample = 0;
                for (iSample = 0; iSample < pWav->channels; iSample += 1) {
                    pBufferOut[iSample] = (ma_int16)pWav->msadpcm.cachedFrames[(ma_dr_wav_countof(pWav->msadpcm.cachedFrames) - (pWav->msadpcm.cachedFrameCount*pWav->channels)) + iSample];
                }
                pBufferOut += pWav->channels;
            }
            framesToRead    -= 1;
            totalFramesRead += 1;
            pWav->readCursorInPCMFrames += 1;
            pWav->msadpcm.cachedFrameCount -= 1;
        }
        if (framesToRead == 0) {
            break;
        }
        if (pWav->msadpcm.cachedFrameCount == 0) {
            if (pWav->msadpcm.bytesRemainingInBlock == 0) {
                continue;
            } else {
                ma_uint8 nibbles;
                ma_int32 nibble0;
                ma_int32 nibble1;
                if (pWav->onRead(pWav->pUserData, &nibbles, 1) != 1) {
                    return totalFramesRead;
                }
                pWav->msadpcm.bytesRemainingInBlock -= 1;
                nibble0 = ((nibbles & 0xF0) >> 4); if ((nibbles & 0x80)) { nibble0 |= 0xFFFFFFF0UL; }
                nibble1 = ((nibbles & 0x0F) >> 0); if ((nibbles & 0x08)) { nibble1 |= 0xFFFFFFF0UL; }
                if (pWav->channels == 1) {
                    ma_int32 newSample0;
                    ma_int32 newSample1;
                    newSample0  = ((pWav->msadpcm.prevFrames[0][1] * coeff1Table[pWav->msadpcm.predictor[0]]) + (pWav->msadpcm.prevFrames[0][0] * coeff2Table[pWav->msadpcm.predictor[0]])) >> 8;
                    newSample0 += nibble0 * pWav->msadpcm.delta[0];
                    newSample0  = ma_dr_wav_clamp(newSample0, -32768, 32767);
                    pWav->msadpcm.delta[0] = (adaptationTable[((nibbles & 0xF0) >> 4)] * pWav->msadpcm.delta[0]) >> 8;
                    if (pWav->msadpcm.delta[0] < 16) {
                        pWav->msadpcm.delta[0] = 16;
                    }
                    pWav->msadpcm.prevFrames[0][0] = pWav->msadpcm.prevFrames[0][1];
                    pWav->msadpcm.prevFrames[0][1] = newSample0;
                    newSample1  = ((pWav->msadpcm.prevFrames[0][1] * coeff1Table[pWav->msadpcm.predictor[0]]) + (pWav->msadpcm.prevFrames[0][0] * coeff2Table[pWav->msadpcm.predictor[0]])) >> 8;
                    newSample1 += nibble1 * pWav->msadpcm.delta[0];
                    newSample1  = ma_dr_wav_clamp(newSample1, -32768, 32767);
                    pWav->msadpcm.delta[0] = (adaptationTable[((nibbles & 0x0F) >> 0)] * pWav->msadpcm.delta[0]) >> 8;
                    if (pWav->msadpcm.delta[0] < 16) {
                        pWav->msadpcm.delta[0] = 16;
                    }
                    pWav->msadpcm.prevFrames[0][0] = pWav->msadpcm.prevFrames[0][1];
                    pWav->msadpcm.prevFrames[0][1] = newSample1;
                    pWav->msadpcm.cachedFrames[2] = newSample0;
                    pWav->msadpcm.cachedFrames[3] = newSample1;
                    pWav->msadpcm.cachedFrameCount = 2;
                } else {
                    ma_int32 newSample0;
                    ma_int32 newSample1;
                    newSample0  = ((pWav->msadpcm.prevFrames[0][1] * coeff1Table[pWav->msadpcm.predictor[0]]) + (pWav->msadpcm.prevFrames[0][0] * coeff2Table[pWav->msadpcm.predictor[0]])) >> 8;
                    newSample0 += nibble0 * pWav->msadpcm.delta[0];
                    newSample0  = ma_dr_wav_clamp(newSample0, -32768, 32767);
                    pWav->msadpcm.delta[0] = (adaptationTable[((nibbles & 0xF0) >> 4)] * pWav->msadpcm.delta[0]) >> 8;
                    if (pWav->msadpcm.delta[0] < 16) {
                        pWav->msadpcm.delta[0] = 16;
                    }
                    pWav->msadpcm.prevFrames[0][0] = pWav->msadpcm.prevFrames[0][1];
                    pWav->msadpcm.prevFrames[0][1] = newSample0;
                    newSample1  = ((pWav->msadpcm.prevFrames[1][1] * coeff1Table[pWav->msadpcm.predictor[1]]) + (pWav->msadpcm.prevFrames[1][0] * coeff2Table[pWav->msadpcm.predictor[1]])) >> 8;
                    newSample1 += nibble1 * pWav->msadpcm.delta[1];
                    newSample1  = ma_dr_wav_clamp(newSample1, -32768, 32767);
                    pWav->msadpcm.delta[1] = (adaptationTable[((nibbles & 0x0F) >> 0)] * pWav->msadpcm.delta[1]) >> 8;
                    if (pWav->msadpcm.delta[1] < 16) {
                        pWav->msadpcm.delta[1] = 16;
                    }
                    pWav->msadpcm.prevFrames[1][0] = pWav->msadpcm.prevFrames[1][1];
                    pWav->msadpcm.prevFrames[1][1] = newSample1;
                    pWav->msadpcm.cachedFrames[2] = newSample0;
                    pWav->msadpcm.cachedFrames[3] = newSample1;
                    pWav->msadpcm.cachedFrameCount = 1;
                }
            }
        }
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__ima(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 totalFramesRead = 0;
    ma_uint32 iChannel;
    static ma_int32 indexTable[16] = {
        -1, -1, -1, -1, 2, 4, 6, 8,
        -1, -1, -1, -1, 2, 4, 6, 8
    };
    static ma_int32 stepTable[89] = {
        7,     8,     9,     10,    11,    12,    13,    14,    16,    17,
        19,    21,    23,    25,    28,    31,    34,    37,    41,    45,
        50,    55,    60,    66,    73,    80,    88,    97,    107,   118,
        130,   143,   157,   173,   190,   209,   230,   253,   279,   307,
        337,   371,   408,   449,   494,   544,   598,   658,   724,   796,
        876,   963,   1060,  1166,  1282,  1411,  1552,  1707,  1878,  2066,
        2272,  2499,  2749,  3024,  3327,  3660,  4026,  4428,  4871,  5358,
        5894,  6484,  7132,  7845,  8630,  9493,  10442, 11487, 12635, 13899,
        15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
    };
    MA_DR_WAV_ASSERT(pWav != NULL);
    MA_DR_WAV_ASSERT(framesToRead > 0);
    while (pWav->readCursorInPCMFrames < pWav->totalPCMFrameCount) {
        MA_DR_WAV_ASSERT(framesToRead > 0);
        if (pWav->ima.cachedFrameCount == 0 && pWav->ima.bytesRemainingInBlock == 0) {
            if (pWav->channels == 1) {
                ma_uint8 header[4];
                if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) {
                    return totalFramesRead;
                }
                pWav->ima.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header);
                if (header[2] >= ma_dr_wav_countof(stepTable)) {
                    pWav->onSeek(pWav->pUserData, pWav->ima.bytesRemainingInBlock, ma_dr_wav_seek_origin_current);
                    pWav->ima.bytesRemainingInBlock = 0;
                    return totalFramesRead;
                }
                pWav->ima.predictor[0] = (ma_int16)ma_dr_wav_bytes_to_u16(header + 0);
                pWav->ima.stepIndex[0] = ma_dr_wav_clamp(header[2], 0, (ma_int32)ma_dr_wav_countof(stepTable)-1);
                pWav->ima.cachedFrames[ma_dr_wav_countof(pWav->ima.cachedFrames) - 1] = pWav->ima.predictor[0];
                pWav->ima.cachedFrameCount = 1;
            } else {
                ma_uint8 header[8];
                if (pWav->onRead(pWav->pUserData, header, sizeof(header)) != sizeof(header)) {
                    return totalFramesRead;
                }
                pWav->ima.bytesRemainingInBlock = pWav->fmt.blockAlign - sizeof(header);
                if (header[2] >= ma_dr_wav_countof(stepTable) || header[6] >= ma_dr_wav_countof(stepTable)) {
                    pWav->onSeek(pWav->pUserData, pWav->ima.bytesRemainingInBlock, ma_dr_wav_seek_origin_current);
                    pWav->ima.bytesRemainingInBlock = 0;
                    return totalFramesRead;
                }
                pWav->ima.predictor[0] = ma_dr_wav_bytes_to_s16(header + 0);
                pWav->ima.stepIndex[0] = ma_dr_wav_clamp(header[2], 0, (ma_int32)ma_dr_wav_countof(stepTable)-1);
                pWav->ima.predictor[1] = ma_dr_wav_bytes_to_s16(header + 4);
                pWav->ima.stepIndex[1] = ma_dr_wav_clamp(header[6], 0, (ma_int32)ma_dr_wav_countof(stepTable)-1);
                pWav->ima.cachedFrames[ma_dr_wav_countof(pWav->ima.cachedFrames) - 2] = pWav->ima.predictor[0];
                pWav->ima.cachedFrames[ma_dr_wav_countof(pWav->ima.cachedFrames) - 1] = pWav->ima.predictor[1];
                pWav->ima.cachedFrameCount = 1;
            }
        }
        while (framesToRead > 0 && pWav->ima.cachedFrameCount > 0 && pWav->readCursorInPCMFrames < pWav->totalPCMFrameCount) {
            if (pBufferOut != NULL) {
                ma_uint32 iSample;
                for (iSample = 0; iSample < pWav->channels; iSample += 1) {
                    pBufferOut[iSample] = (ma_int16)pWav->ima.cachedFrames[(ma_dr_wav_countof(pWav->ima.cachedFrames) - (pWav->ima.cachedFrameCount*pWav->channels)) + iSample];
                }
                pBufferOut += pWav->channels;
            }
            framesToRead    -= 1;
            totalFramesRead += 1;
            pWav->readCursorInPCMFrames += 1;
            pWav->ima.cachedFrameCount -= 1;
        }
        if (framesToRead == 0) {
            break;
        }
        if (pWav->ima.cachedFrameCount == 0) {
            if (pWav->ima.bytesRemainingInBlock == 0) {
                continue;
            } else {
                pWav->ima.cachedFrameCount = 8;
                for (iChannel = 0; iChannel < pWav->channels; ++iChannel) {
                    ma_uint32 iByte;
                    ma_uint8 nibbles[4];
                    if (pWav->onRead(pWav->pUserData, &nibbles, 4) != 4) {
                        pWav->ima.cachedFrameCount = 0;
                        return totalFramesRead;
                    }
                    pWav->ima.bytesRemainingInBlock -= 4;
                    for (iByte = 0; iByte < 4; ++iByte) {
                        ma_uint8 nibble0 = ((nibbles[iByte] & 0x0F) >> 0);
                        ma_uint8 nibble1 = ((nibbles[iByte] & 0xF0) >> 4);
                        ma_int32 step      = stepTable[pWav->ima.stepIndex[iChannel]];
                        ma_int32 predictor = pWav->ima.predictor[iChannel];
                        ma_int32      diff  = step >> 3;
                        if (nibble0 & 1) diff += step >> 2;
                        if (nibble0 & 2) diff += step >> 1;
                        if (nibble0 & 4) diff += step;
                        if (nibble0 & 8) diff  = -diff;
                        predictor = ma_dr_wav_clamp(predictor + diff, -32768, 32767);
                        pWav->ima.predictor[iChannel] = predictor;
                        pWav->ima.stepIndex[iChannel] = ma_dr_wav_clamp(pWav->ima.stepIndex[iChannel] + indexTable[nibble0], 0, (ma_int32)ma_dr_wav_countof(stepTable)-1);
                        pWav->ima.cachedFrames[(ma_dr_wav_countof(pWav->ima.cachedFrames) - (pWav->ima.cachedFrameCount*pWav->channels)) + (iByte*2+0)*pWav->channels + iChannel] = predictor;
                        step      = stepTable[pWav->ima.stepIndex[iChannel]];
                        predictor = pWav->ima.predictor[iChannel];
                                         diff  = step >> 3;
                        if (nibble1 & 1) diff += step >> 2;
                        if (nibble1 & 2) diff += step >> 1;
                        if (nibble1 & 4) diff += step;
                        if (nibble1 & 8) diff  = -diff;
                        predictor = ma_dr_wav_clamp(predictor + diff, -32768, 32767);
                        pWav->ima.predictor[iChannel] = predictor;
                        pWav->ima.stepIndex[iChannel] = ma_dr_wav_clamp(pWav->ima.stepIndex[iChannel] + indexTable[nibble1], 0, (ma_int32)ma_dr_wav_countof(stepTable)-1);
                        pWav->ima.cachedFrames[(ma_dr_wav_countof(pWav->ima.cachedFrames) - (pWav->ima.cachedFrameCount*pWav->channels)) + (iByte*2+1)*pWav->channels + iChannel] = predictor;
                    }
                }
            }
        }
    }
    return totalFramesRead;
}
#ifndef MA_DR_WAV_NO_CONVERSION_API
static unsigned short g_ma_dr_wavAlawTable[256] = {
    0xEA80, 0xEB80, 0xE880, 0xE980, 0xEE80, 0xEF80, 0xEC80, 0xED80, 0xE280, 0xE380, 0xE080, 0xE180, 0xE680, 0xE780, 0xE480, 0xE580,
    0xF540, 0xF5C0, 0xF440, 0xF4C0, 0xF740, 0xF7C0, 0xF640, 0xF6C0, 0xF140, 0xF1C0, 0xF040, 0xF0C0, 0xF340, 0xF3C0, 0xF240, 0xF2C0,
    0xAA00, 0xAE00, 0xA200, 0xA600, 0xBA00, 0xBE00, 0xB200, 0xB600, 0x8A00, 0x8E00, 0x8200, 0x8600, 0x9A00, 0x9E00, 0x9200, 0x9600,
    0xD500, 0xD700, 0xD100, 0xD300, 0xDD00, 0xDF00, 0xD900, 0xDB00, 0xC500, 0xC700, 0xC100, 0xC300, 0xCD00, 0xCF00, 0xC900, 0xCB00,
    0xFEA8, 0xFEB8, 0xFE88, 0xFE98, 0xFEE8, 0xFEF8, 0xFEC8, 0xFED8, 0xFE28, 0xFE38, 0xFE08, 0xFE18, 0xFE68, 0xFE78, 0xFE48, 0xFE58,
    0xFFA8, 0xFFB8, 0xFF88, 0xFF98, 0xFFE8, 0xFFF8, 0xFFC8, 0xFFD8, 0xFF28, 0xFF38, 0xFF08, 0xFF18, 0xFF68, 0xFF78, 0xFF48, 0xFF58,
    0xFAA0, 0xFAE0, 0xFA20, 0xFA60, 0xFBA0, 0xFBE0, 0xFB20, 0xFB60, 0xF8A0, 0xF8E0, 0xF820, 0xF860, 0xF9A0, 0xF9E0, 0xF920, 0xF960,
    0xFD50, 0xFD70, 0xFD10, 0xFD30, 0xFDD0, 0xFDF0, 0xFD90, 0xFDB0, 0xFC50, 0xFC70, 0xFC10, 0xFC30, 0xFCD0, 0xFCF0, 0xFC90, 0xFCB0,
    0x1580, 0x1480, 0x1780, 0x1680, 0x1180, 0x1080, 0x1380, 0x1280, 0x1D80, 0x1C80, 0x1F80, 0x1E80, 0x1980, 0x1880, 0x1B80, 0x1A80,
    0x0AC0, 0x0A40, 0x0BC0, 0x0B40, 0x08C0, 0x0840, 0x09C0, 0x0940, 0x0EC0, 0x0E40, 0x0FC0, 0x0F40, 0x0CC0, 0x0C40, 0x0DC0, 0x0D40,
    0x5600, 0x5200, 0x5E00, 0x5A00, 0x4600, 0x4200, 0x4E00, 0x4A00, 0x7600, 0x7200, 0x7E00, 0x7A00, 0x6600, 0x6200, 0x6E00, 0x6A00,
    0x2B00, 0x2900, 0x2F00, 0x2D00, 0x2300, 0x2100, 0x2700, 0x2500, 0x3B00, 0x3900, 0x3F00, 0x3D00, 0x3300, 0x3100, 0x3700, 0x3500,
    0x0158, 0x0148, 0x0178, 0x0168, 0x0118, 0x0108, 0x0138, 0x0128, 0x01D8, 0x01C8, 0x01F8, 0x01E8, 0x0198, 0x0188, 0x01B8, 0x01A8,
    0x0058, 0x0048, 0x0078, 0x0068, 0x0018, 0x0008, 0x0038, 0x0028, 0x00D8, 0x00C8, 0x00F8, 0x00E8, 0x0098, 0x0088, 0x00B8, 0x00A8,
    0x0560, 0x0520, 0x05E0, 0x05A0, 0x0460, 0x0420, 0x04E0, 0x04A0, 0x0760, 0x0720, 0x07E0, 0x07A0, 0x0660, 0x0620, 0x06E0, 0x06A0,
    0x02B0, 0x0290, 0x02F0, 0x02D0, 0x0230, 0x0210, 0x0270, 0x0250, 0x03B0, 0x0390, 0x03F0, 0x03D0, 0x0330, 0x0310, 0x0370, 0x0350
};
static unsigned short g_ma_dr_wavMulawTable[256] = {
    0x8284, 0x8684, 0x8A84, 0x8E84, 0x9284, 0x9684, 0x9A84, 0x9E84, 0xA284, 0xA684, 0xAA84, 0xAE84, 0xB284, 0xB684, 0xBA84, 0xBE84,
    0xC184, 0xC384, 0xC584, 0xC784, 0xC984, 0xCB84, 0xCD84, 0xCF84, 0xD184, 0xD384, 0xD584, 0xD784, 0xD984, 0xDB84, 0xDD84, 0xDF84,
    0xE104, 0xE204, 0xE304, 0xE404, 0xE504, 0xE604, 0xE704, 0xE804, 0xE904, 0xEA04, 0xEB04, 0xEC04, 0xED04, 0xEE04, 0xEF04, 0xF004,
    0xF0C4, 0xF144, 0xF1C4, 0xF244, 0xF2C4, 0xF344, 0xF3C4, 0xF444, 0xF4C4, 0xF544, 0xF5C4, 0xF644, 0xF6C4, 0xF744, 0xF7C4, 0xF844,
    0xF8A4, 0xF8E4, 0xF924, 0xF964, 0xF9A4, 0xF9E4, 0xFA24, 0xFA64, 0xFAA4, 0xFAE4, 0xFB24, 0xFB64, 0xFBA4, 0xFBE4, 0xFC24, 0xFC64,
    0xFC94, 0xFCB4, 0xFCD4, 0xFCF4, 0xFD14, 0xFD34, 0xFD54, 0xFD74, 0xFD94, 0xFDB4, 0xFDD4, 0xFDF4, 0xFE14, 0xFE34, 0xFE54, 0xFE74,
    0xFE8C, 0xFE9C, 0xFEAC, 0xFEBC, 0xFECC, 0xFEDC, 0xFEEC, 0xFEFC, 0xFF0C, 0xFF1C, 0xFF2C, 0xFF3C, 0xFF4C, 0xFF5C, 0xFF6C, 0xFF7C,
    0xFF88, 0xFF90, 0xFF98, 0xFFA0, 0xFFA8, 0xFFB0, 0xFFB8, 0xFFC0, 0xFFC8, 0xFFD0, 0xFFD8, 0xFFE0, 0xFFE8, 0xFFF0, 0xFFF8, 0x0000,
    0x7D7C, 0x797C, 0x757C, 0x717C, 0x6D7C, 0x697C, 0x657C, 0x617C, 0x5D7C, 0x597C, 0x557C, 0x517C, 0x4D7C, 0x497C, 0x457C, 0x417C,
    0x3E7C, 0x3C7C, 0x3A7C, 0x387C, 0x367C, 0x347C, 0x327C, 0x307C, 0x2E7C, 0x2C7C, 0x2A7C, 0x287C, 0x267C, 0x247C, 0x227C, 0x207C,
    0x1EFC, 0x1DFC, 0x1CFC, 0x1BFC, 0x1AFC, 0x19FC, 0x18FC, 0x17FC, 0x16FC, 0x15FC, 0x14FC, 0x13FC, 0x12FC, 0x11FC, 0x10FC, 0x0FFC,
    0x0F3C, 0x0EBC, 0x0E3C, 0x0DBC, 0x0D3C, 0x0CBC, 0x0C3C, 0x0BBC, 0x0B3C, 0x0ABC, 0x0A3C, 0x09BC, 0x093C, 0x08BC, 0x083C, 0x07BC,
    0x075C, 0x071C, 0x06DC, 0x069C, 0x065C, 0x061C, 0x05DC, 0x059C, 0x055C, 0x051C, 0x04DC, 0x049C, 0x045C, 0x041C, 0x03DC, 0x039C,
    0x036C, 0x034C, 0x032C, 0x030C, 0x02EC, 0x02CC, 0x02AC, 0x028C, 0x026C, 0x024C, 0x022C, 0x020C, 0x01EC, 0x01CC, 0x01AC, 0x018C,
    0x0174, 0x0164, 0x0154, 0x0144, 0x0134, 0x0124, 0x0114, 0x0104, 0x00F4, 0x00E4, 0x00D4, 0x00C4, 0x00B4, 0x00A4, 0x0094, 0x0084,
    0x0078, 0x0070, 0x0068, 0x0060, 0x0058, 0x0050, 0x0048, 0x0040, 0x0038, 0x0030, 0x0028, 0x0020, 0x0018, 0x0010, 0x0008, 0x0000
};
static MA_INLINE ma_int16 ma_dr_wav__alaw_to_s16(ma_uint8 sampleIn)
{
    return (short)g_ma_dr_wavAlawTable[sampleIn];
}
static MA_INLINE ma_int16 ma_dr_wav__mulaw_to_s16(ma_uint8 sampleIn)
{
    return (short)g_ma_dr_wavMulawTable[sampleIn];
}
MA_PRIVATE void ma_dr_wav__pcm_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t totalSampleCount, unsigned int bytesPerSample)
{
    size_t i;
    if (bytesPerSample == 1) {
        ma_dr_wav_u8_to_s16(pOut, pIn, totalSampleCount);
        return;
    }
    if (bytesPerSample == 2) {
        for (i = 0; i < totalSampleCount; ++i) {
           *pOut++ = ((const ma_int16*)pIn)[i];
        }
        return;
    }
    if (bytesPerSample == 3) {
        ma_dr_wav_s24_to_s16(pOut, pIn, totalSampleCount);
        return;
    }
    if (bytesPerSample == 4) {
        ma_dr_wav_s32_to_s16(pOut, (const ma_int32*)pIn, totalSampleCount);
        return;
    }
    if (bytesPerSample > 8) {
        MA_DR_WAV_ZERO_MEMORY(pOut, totalSampleCount * sizeof(*pOut));
        return;
    }
    for (i = 0; i < totalSampleCount; ++i) {
        ma_uint64 sample = 0;
        unsigned int shift  = (8 - bytesPerSample) * 8;
        unsigned int j;
        for (j = 0; j < bytesPerSample; j += 1) {
            MA_DR_WAV_ASSERT(j < 8);
            sample |= (ma_uint64)(pIn[j]) << shift;
            shift  += 8;
        }
        pIn += j;
        *pOut++ = (ma_int16)((ma_int64)sample >> 48);
    }
}
MA_PRIVATE void ma_dr_wav__ieee_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t totalSampleCount, unsigned int bytesPerSample)
{
    if (bytesPerSample == 4) {
        ma_dr_wav_f32_to_s16(pOut, (const float*)pIn, totalSampleCount);
        return;
    } else if (bytesPerSample == 8) {
        ma_dr_wav_f64_to_s16(pOut, (const double*)pIn, totalSampleCount);
        return;
    } else {
        MA_DR_WAV_ZERO_MEMORY(pOut, totalSampleCount * sizeof(*pOut));
        return;
    }
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__pcm(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    if ((pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_PCM && pWav->bitsPerSample == 16) || pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, pBufferOut);
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav__pcm_to_s16(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample);
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__ieee(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    if (pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, NULL);
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav__ieee_to_s16(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample);
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__alaw(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    if (pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, NULL);
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav_alaw_to_s16(pBufferOut, sampleData, (size_t)samplesRead);
        #ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
        {
            if (pWav->container == ma_dr_wav_container_aiff) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < samplesRead; iSample += 1) {
                    pBufferOut[iSample] = -pBufferOut[iSample];
                }
            }
        }
        #endif
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s16__mulaw(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    if (pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, NULL);
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav_mulaw_to_s16(pBufferOut, sampleData, (size_t)samplesRead);
        #ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
        {
            if (pWav->container == ma_dr_wav_container_aiff) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < samplesRead; iSample += 1) {
                    pBufferOut[iSample] = -pBufferOut[iSample];
                }
            }
        }
        #endif
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s16(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    if (pWav == NULL || framesToRead == 0) {
        return 0;
    }
    if (pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, NULL);
    }
    if (framesToRead * pWav->channels * sizeof(ma_int16) > MA_SIZE_MAX) {
        framesToRead = MA_SIZE_MAX / sizeof(ma_int16) / pWav->channels;
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_PCM) {
        return ma_dr_wav_read_pcm_frames_s16__pcm(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_IEEE_FLOAT) {
        return ma_dr_wav_read_pcm_frames_s16__ieee(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ALAW) {
        return ma_dr_wav_read_pcm_frames_s16__alaw(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_MULAW) {
        return ma_dr_wav_read_pcm_frames_s16__mulaw(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM) {
        return ma_dr_wav_read_pcm_frames_s16__msadpcm(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
        return ma_dr_wav_read_pcm_frames_s16__ima(pWav, framesToRead, pBufferOut);
    }
    return 0;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s16le(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_s16(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL && ma_dr_wav__is_little_endian() == MA_FALSE) {
        ma_dr_wav__bswap_samples_s16(pBufferOut, framesRead*pWav->channels);
    }
    return framesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s16be(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_s16(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL && ma_dr_wav__is_little_endian() == MA_TRUE) {
        ma_dr_wav__bswap_samples_s16(pBufferOut, framesRead*pWav->channels);
    }
    return framesRead;
}
MA_API void ma_dr_wav_u8_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    int r;
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        int x = pIn[i];
        r = x << 8;
        r = r - 32768;
        pOut[i] = (short)r;
    }
}
MA_API void ma_dr_wav_s24_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    int r;
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        int x = ((int)(((unsigned int)(((const ma_uint8*)pIn)[i*3+0]) << 8) | ((unsigned int)(((const ma_uint8*)pIn)[i*3+1]) << 16) | ((unsigned int)(((const ma_uint8*)pIn)[i*3+2])) << 24)) >> 8;
        r = x >> 8;
        pOut[i] = (short)r;
    }
}
MA_API void ma_dr_wav_s32_to_s16(ma_int16* pOut, const ma_int32* pIn, size_t sampleCount)
{
    int r;
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        int x = pIn[i];
        r = x >> 16;
        pOut[i] = (short)r;
    }
}
MA_API void ma_dr_wav_f32_to_s16(ma_int16* pOut, const float* pIn, size_t sampleCount)
{
    int r;
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        float x = pIn[i];
        float c;
        c = ((x < -1) ? -1 : ((x > 1) ? 1 : x));
        c = c + 1;
        r = (int)(c * 32767.5f);
        r = r - 32768;
        pOut[i] = (short)r;
    }
}
MA_API void ma_dr_wav_f64_to_s16(ma_int16* pOut, const double* pIn, size_t sampleCount)
{
    int r;
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        double x = pIn[i];
        double c;
        c = ((x < -1) ? -1 : ((x > 1) ? 1 : x));
        c = c + 1;
        r = (int)(c * 32767.5);
        r = r - 32768;
        pOut[i] = (short)r;
    }
}
MA_API void ma_dr_wav_alaw_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        pOut[i] = ma_dr_wav__alaw_to_s16(pIn[i]);
    }
}
MA_API void ma_dr_wav_mulaw_to_s16(ma_int16* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    for (i = 0; i < sampleCount; ++i) {
        pOut[i] = ma_dr_wav__mulaw_to_s16(pIn[i]);
    }
}
MA_PRIVATE void ma_dr_wav__pcm_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount, unsigned int bytesPerSample)
{
    unsigned int i;
    if (bytesPerSample == 1) {
        ma_dr_wav_u8_to_f32(pOut, pIn, sampleCount);
        return;
    }
    if (bytesPerSample == 2) {
        ma_dr_wav_s16_to_f32(pOut, (const ma_int16*)pIn, sampleCount);
        return;
    }
    if (bytesPerSample == 3) {
        ma_dr_wav_s24_to_f32(pOut, pIn, sampleCount);
        return;
    }
    if (bytesPerSample == 4) {
        ma_dr_wav_s32_to_f32(pOut, (const ma_int32*)pIn, sampleCount);
        return;
    }
    if (bytesPerSample > 8) {
        MA_DR_WAV_ZERO_MEMORY(pOut, sampleCount * sizeof(*pOut));
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        ma_uint64 sample = 0;
        unsigned int shift  = (8 - bytesPerSample) * 8;
        unsigned int j;
        for (j = 0; j < bytesPerSample; j += 1) {
            MA_DR_WAV_ASSERT(j < 8);
            sample |= (ma_uint64)(pIn[j]) << shift;
            shift  += 8;
        }
        pIn += j;
        *pOut++ = (float)((ma_int64)sample / 9223372036854775807.0);
    }
}
MA_PRIVATE void ma_dr_wav__ieee_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount, unsigned int bytesPerSample)
{
    if (bytesPerSample == 4) {
        unsigned int i;
        for (i = 0; i < sampleCount; ++i) {
            *pOut++ = ((const float*)pIn)[i];
        }
        return;
    } else if (bytesPerSample == 8) {
        ma_dr_wav_f64_to_f32(pOut, (const double*)pIn, sampleCount);
        return;
    } else {
        MA_DR_WAV_ZERO_MEMORY(pOut, sampleCount * sizeof(*pOut));
        return;
    }
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_f32__pcm(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav__pcm_to_f32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample);
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_f32__msadpcm_ima(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_int16 samples16[2048];
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, ma_dr_wav_countof(samples16)/pWav->channels);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_s16(pWav, framesToReadThisIteration, samples16);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        ma_dr_wav_s16_to_f32(pBufferOut, samples16, (size_t)(framesRead*pWav->channels));
        pBufferOut      += framesRead*pWav->channels;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_f32__ieee(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_IEEE_FLOAT && pWav->bitsPerSample == 32) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, pBufferOut);
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav__ieee_to_f32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample);
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_f32__alaw(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav_alaw_to_f32(pBufferOut, sampleData, (size_t)samplesRead);
        #ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
        {
            if (pWav->container == ma_dr_wav_container_aiff) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < samplesRead; iSample += 1) {
                    pBufferOut[iSample] = -pBufferOut[iSample];
                }
            }
        }
        #endif
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_f32__mulaw(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav_mulaw_to_f32(pBufferOut, sampleData, (size_t)samplesRead);
        #ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
        {
            if (pWav->container == ma_dr_wav_container_aiff) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < samplesRead; iSample += 1) {
                    pBufferOut[iSample] = -pBufferOut[iSample];
                }
            }
        }
        #endif
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_f32(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    if (pWav == NULL || framesToRead == 0) {
        return 0;
    }
    if (pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, NULL);
    }
    if (framesToRead * pWav->channels * sizeof(float) > MA_SIZE_MAX) {
        framesToRead = MA_SIZE_MAX / sizeof(float) / pWav->channels;
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_PCM) {
        return ma_dr_wav_read_pcm_frames_f32__pcm(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM || pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
        return ma_dr_wav_read_pcm_frames_f32__msadpcm_ima(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_IEEE_FLOAT) {
        return ma_dr_wav_read_pcm_frames_f32__ieee(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ALAW) {
        return ma_dr_wav_read_pcm_frames_f32__alaw(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_MULAW) {
        return ma_dr_wav_read_pcm_frames_f32__mulaw(pWav, framesToRead, pBufferOut);
    }
    return 0;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_f32le(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_f32(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL && ma_dr_wav__is_little_endian() == MA_FALSE) {
        ma_dr_wav__bswap_samples_f32(pBufferOut, framesRead*pWav->channels);
    }
    return framesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_f32be(ma_dr_wav* pWav, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_f32(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL && ma_dr_wav__is_little_endian() == MA_TRUE) {
        ma_dr_wav__bswap_samples_f32(pBufferOut, framesRead*pWav->channels);
    }
    return framesRead;
}
MA_API void ma_dr_wav_u8_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
#ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = (pIn[i] / 256.0f) * 2 - 1;
    }
#else
    for (i = 0; i < sampleCount; ++i) {
        float x = pIn[i];
        x = x * 0.00784313725490196078f;
        x = x - 1;
        *pOut++ = x;
    }
#endif
}
MA_API void ma_dr_wav_s16_to_f32(float* pOut, const ma_int16* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = pIn[i] * 0.000030517578125f;
    }
}
MA_API void ma_dr_wav_s24_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        double x;
        ma_uint32 a = ((ma_uint32)(pIn[i*3+0]) <<  8);
        ma_uint32 b = ((ma_uint32)(pIn[i*3+1]) << 16);
        ma_uint32 c = ((ma_uint32)(pIn[i*3+2]) << 24);
        x = (double)((ma_int32)(a | b | c) >> 8);
        *pOut++ = (float)(x * 0.00000011920928955078125);
    }
}
MA_API void ma_dr_wav_s32_to_f32(float* pOut, const ma_int32* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = (float)(pIn[i] / 2147483648.0);
    }
}
MA_API void ma_dr_wav_f64_to_f32(float* pOut, const double* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = (float)pIn[i];
    }
}
MA_API void ma_dr_wav_alaw_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = ma_dr_wav__alaw_to_s16(pIn[i]) / 32768.0f;
    }
}
MA_API void ma_dr_wav_mulaw_to_f32(float* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = ma_dr_wav__mulaw_to_s16(pIn[i]) / 32768.0f;
    }
}
MA_PRIVATE void ma_dr_wav__pcm_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t totalSampleCount, unsigned int bytesPerSample)
{
    unsigned int i;
    if (bytesPerSample == 1) {
        ma_dr_wav_u8_to_s32(pOut, pIn, totalSampleCount);
        return;
    }
    if (bytesPerSample == 2) {
        ma_dr_wav_s16_to_s32(pOut, (const ma_int16*)pIn, totalSampleCount);
        return;
    }
    if (bytesPerSample == 3) {
        ma_dr_wav_s24_to_s32(pOut, pIn, totalSampleCount);
        return;
    }
    if (bytesPerSample == 4) {
        for (i = 0; i < totalSampleCount; ++i) {
           *pOut++ = ((const ma_int32*)pIn)[i];
        }
        return;
    }
    if (bytesPerSample > 8) {
        MA_DR_WAV_ZERO_MEMORY(pOut, totalSampleCount * sizeof(*pOut));
        return;
    }
    for (i = 0; i < totalSampleCount; ++i) {
        ma_uint64 sample = 0;
        unsigned int shift  = (8 - bytesPerSample) * 8;
        unsigned int j;
        for (j = 0; j < bytesPerSample; j += 1) {
            MA_DR_WAV_ASSERT(j < 8);
            sample |= (ma_uint64)(pIn[j]) << shift;
            shift  += 8;
        }
        pIn += j;
        *pOut++ = (ma_int32)((ma_int64)sample >> 32);
    }
}
MA_PRIVATE void ma_dr_wav__ieee_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t totalSampleCount, unsigned int bytesPerSample)
{
    if (bytesPerSample == 4) {
        ma_dr_wav_f32_to_s32(pOut, (const float*)pIn, totalSampleCount);
        return;
    } else if (bytesPerSample == 8) {
        ma_dr_wav_f64_to_s32(pOut, (const double*)pIn, totalSampleCount);
        return;
    } else {
        MA_DR_WAV_ZERO_MEMORY(pOut, totalSampleCount * sizeof(*pOut));
        return;
    }
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s32__pcm(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_PCM && pWav->bitsPerSample == 32) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, pBufferOut);
    }
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav__pcm_to_s32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample);
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s32__msadpcm_ima(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 totalFramesRead = 0;
    ma_int16 samples16[2048];
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, ma_dr_wav_countof(samples16)/pWav->channels);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_s16(pWav, framesToReadThisIteration, samples16);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        ma_dr_wav_s16_to_s32(pBufferOut, samples16, (size_t)(framesRead*pWav->channels));
        pBufferOut      += framesRead*pWav->channels;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s32__ieee(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav__ieee_to_s32(pBufferOut, sampleData, (size_t)samplesRead, bytesPerSample);
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s32__alaw(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav_alaw_to_s32(pBufferOut, sampleData, (size_t)samplesRead);
        #ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
        {
            if (pWav->container == ma_dr_wav_container_aiff) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < samplesRead; iSample += 1) {
                    pBufferOut[iSample] = -pBufferOut[iSample];
                }
            }
        }
        #endif
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_PRIVATE ma_uint64 ma_dr_wav_read_pcm_frames_s32__mulaw(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 totalFramesRead;
    ma_uint8 sampleData[4096] = {0};
    ma_uint32 bytesPerFrame;
    ma_uint32 bytesPerSample;
    ma_uint64 samplesRead;
    bytesPerFrame = ma_dr_wav_get_bytes_per_pcm_frame(pWav);
    if (bytesPerFrame == 0) {
        return 0;
    }
    bytesPerSample = bytesPerFrame / pWav->channels;
    if (bytesPerSample == 0 || (bytesPerFrame % pWav->channels) != 0) {
        return 0;
    }
    totalFramesRead = 0;
    while (framesToRead > 0) {
        ma_uint64 framesToReadThisIteration = ma_dr_wav_min(framesToRead, sizeof(sampleData)/bytesPerFrame);
        ma_uint64 framesRead = ma_dr_wav_read_pcm_frames(pWav, framesToReadThisIteration, sampleData);
        if (framesRead == 0) {
            break;
        }
        MA_DR_WAV_ASSERT(framesRead <= framesToReadThisIteration);
        samplesRead = framesRead * pWav->channels;
        if ((samplesRead * bytesPerSample) > sizeof(sampleData)) {
            MA_DR_WAV_ASSERT(MA_FALSE);
            break;
        }
        ma_dr_wav_mulaw_to_s32(pBufferOut, sampleData, (size_t)samplesRead);
        #ifdef MA_DR_WAV_LIBSNDFILE_COMPAT
        {
            if (pWav->container == ma_dr_wav_container_aiff) {
                ma_uint64 iSample;
                for (iSample = 0; iSample < samplesRead; iSample += 1) {
                    pBufferOut[iSample] = -pBufferOut[iSample];
                }
            }
        }
        #endif
        pBufferOut      += samplesRead;
        framesToRead    -= framesRead;
        totalFramesRead += framesRead;
    }
    return totalFramesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s32(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    if (pWav == NULL || framesToRead == 0) {
        return 0;
    }
    if (pBufferOut == NULL) {
        return ma_dr_wav_read_pcm_frames(pWav, framesToRead, NULL);
    }
    if (framesToRead * pWav->channels * sizeof(ma_int32) > MA_SIZE_MAX) {
        framesToRead = MA_SIZE_MAX / sizeof(ma_int32) / pWav->channels;
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_PCM) {
        return ma_dr_wav_read_pcm_frames_s32__pcm(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ADPCM || pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_DVI_ADPCM) {
        return ma_dr_wav_read_pcm_frames_s32__msadpcm_ima(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_IEEE_FLOAT) {
        return ma_dr_wav_read_pcm_frames_s32__ieee(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_ALAW) {
        return ma_dr_wav_read_pcm_frames_s32__alaw(pWav, framesToRead, pBufferOut);
    }
    if (pWav->translatedFormatTag == MA_DR_WAVE_FORMAT_MULAW) {
        return ma_dr_wav_read_pcm_frames_s32__mulaw(pWav, framesToRead, pBufferOut);
    }
    return 0;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s32le(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_s32(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL && ma_dr_wav__is_little_endian() == MA_FALSE) {
        ma_dr_wav__bswap_samples_s32(pBufferOut, framesRead*pWav->channels);
    }
    return framesRead;
}
MA_API ma_uint64 ma_dr_wav_read_pcm_frames_s32be(ma_dr_wav* pWav, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 framesRead = ma_dr_wav_read_pcm_frames_s32(pWav, framesToRead, pBufferOut);
    if (pBufferOut != NULL && ma_dr_wav__is_little_endian() == MA_TRUE) {
        ma_dr_wav__bswap_samples_s32(pBufferOut, framesRead*pWav->channels);
    }
    return framesRead;
}
MA_API void ma_dr_wav_u8_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = ((int)pIn[i] - 128) << 24;
    }
}
MA_API void ma_dr_wav_s16_to_s32(ma_int32* pOut, const ma_int16* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = pIn[i] << 16;
    }
}
MA_API void ma_dr_wav_s24_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        unsigned int s0 = pIn[i*3 + 0];
        unsigned int s1 = pIn[i*3 + 1];
        unsigned int s2 = pIn[i*3 + 2];
        ma_int32 sample32 = (ma_int32)((s0 << 8) | (s1 << 16) | (s2 << 24));
        *pOut++ = sample32;
    }
}
MA_API void ma_dr_wav_f32_to_s32(ma_int32* pOut, const float* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = (ma_int32)(2147483648.0f * pIn[i]);
    }
}
MA_API void ma_dr_wav_f64_to_s32(ma_int32* pOut, const double* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = (ma_int32)(2147483648.0 * pIn[i]);
    }
}
MA_API void ma_dr_wav_alaw_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i = 0; i < sampleCount; ++i) {
        *pOut++ = ((ma_int32)ma_dr_wav__alaw_to_s16(pIn[i])) << 16;
    }
}
MA_API void ma_dr_wav_mulaw_to_s32(ma_int32* pOut, const ma_uint8* pIn, size_t sampleCount)
{
    size_t i;
    if (pOut == NULL || pIn == NULL) {
        return;
    }
    for (i= 0; i < sampleCount; ++i) {
        *pOut++ = ((ma_int32)ma_dr_wav__mulaw_to_s16(pIn[i])) << 16;
    }
}
MA_PRIVATE ma_int16* ma_dr_wav__read_pcm_frames_and_close_s16(ma_dr_wav* pWav, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalFrameCount)
{
    ma_uint64 sampleDataSize;
    ma_int16* pSampleData;
    ma_uint64 framesRead;
    MA_DR_WAV_ASSERT(pWav != NULL);
    sampleDataSize = pWav->totalPCMFrameCount * pWav->channels * sizeof(ma_int16);
    if (sampleDataSize > MA_SIZE_MAX) {
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    pSampleData = (ma_int16*)ma_dr_wav__malloc_from_callbacks((size_t)sampleDataSize, &pWav->allocationCallbacks);
    if (pSampleData == NULL) {
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    framesRead = ma_dr_wav_read_pcm_frames_s16(pWav, (size_t)pWav->totalPCMFrameCount, pSampleData);
    if (framesRead != pWav->totalPCMFrameCount) {
        ma_dr_wav__free_from_callbacks(pSampleData, &pWav->allocationCallbacks);
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    ma_dr_wav_uninit(pWav);
    if (sampleRate) {
        *sampleRate = pWav->sampleRate;
    }
    if (channels) {
        *channels = pWav->channels;
    }
    if (totalFrameCount) {
        *totalFrameCount = pWav->totalPCMFrameCount;
    }
    return pSampleData;
}
MA_PRIVATE float* ma_dr_wav__read_pcm_frames_and_close_f32(ma_dr_wav* pWav, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalFrameCount)
{
    ma_uint64 sampleDataSize;
    float* pSampleData;
    ma_uint64 framesRead;
    MA_DR_WAV_ASSERT(pWav != NULL);
    sampleDataSize = pWav->totalPCMFrameCount * pWav->channels * sizeof(float);
    if (sampleDataSize > MA_SIZE_MAX) {
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    pSampleData = (float*)ma_dr_wav__malloc_from_callbacks((size_t)sampleDataSize, &pWav->allocationCallbacks);
    if (pSampleData == NULL) {
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    framesRead = ma_dr_wav_read_pcm_frames_f32(pWav, (size_t)pWav->totalPCMFrameCount, pSampleData);
    if (framesRead != pWav->totalPCMFrameCount) {
        ma_dr_wav__free_from_callbacks(pSampleData, &pWav->allocationCallbacks);
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    ma_dr_wav_uninit(pWav);
    if (sampleRate) {
        *sampleRate = pWav->sampleRate;
    }
    if (channels) {
        *channels = pWav->channels;
    }
    if (totalFrameCount) {
        *totalFrameCount = pWav->totalPCMFrameCount;
    }
    return pSampleData;
}
MA_PRIVATE ma_int32* ma_dr_wav__read_pcm_frames_and_close_s32(ma_dr_wav* pWav, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalFrameCount)
{
    ma_uint64 sampleDataSize;
    ma_int32* pSampleData;
    ma_uint64 framesRead;
    MA_DR_WAV_ASSERT(pWav != NULL);
    sampleDataSize = pWav->totalPCMFrameCount * pWav->channels * sizeof(ma_int32);
    if (sampleDataSize > MA_SIZE_MAX) {
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    pSampleData = (ma_int32*)ma_dr_wav__malloc_from_callbacks((size_t)sampleDataSize, &pWav->allocationCallbacks);
    if (pSampleData == NULL) {
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    framesRead = ma_dr_wav_read_pcm_frames_s32(pWav, (size_t)pWav->totalPCMFrameCount, pSampleData);
    if (framesRead != pWav->totalPCMFrameCount) {
        ma_dr_wav__free_from_callbacks(pSampleData, &pWav->allocationCallbacks);
        ma_dr_wav_uninit(pWav);
        return NULL;
    }
    ma_dr_wav_uninit(pWav);
    if (sampleRate) {
        *sampleRate = pWav->sampleRate;
    }
    if (channels) {
        *channels = pWav->channels;
    }
    if (totalFrameCount) {
        *totalFrameCount = pWav->totalPCMFrameCount;
    }
    return pSampleData;
}
MA_API ma_int16* ma_dr_wav_open_and_read_pcm_frames_s16(ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init(&wav, onRead, onSeek, pUserData, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s16(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API float* ma_dr_wav_open_and_read_pcm_frames_f32(ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init(&wav, onRead, onSeek, pUserData, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_f32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API ma_int32* ma_dr_wav_open_and_read_pcm_frames_s32(ma_dr_wav_read_proc onRead, ma_dr_wav_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init(&wav, onRead, onSeek, pUserData, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
#ifndef MA_DR_WAV_NO_STDIO
MA_API ma_int16* ma_dr_wav_open_file_and_read_pcm_frames_s16(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_file(&wav, filename, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s16(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API float* ma_dr_wav_open_file_and_read_pcm_frames_f32(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_file(&wav, filename, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_f32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API ma_int32* ma_dr_wav_open_file_and_read_pcm_frames_s32(const char* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_file(&wav, filename, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
#ifndef MA_DR_WAV_NO_WCHAR
MA_API ma_int16* ma_dr_wav_open_file_and_read_pcm_frames_s16_w(const wchar_t* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_file_w(&wav, filename, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s16(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API float* ma_dr_wav_open_file_and_read_pcm_frames_f32_w(const wchar_t* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_file_w(&wav, filename, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_f32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API ma_int32* ma_dr_wav_open_file_and_read_pcm_frames_s32_w(const wchar_t* filename, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_file_w(&wav, filename, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
#endif
#endif
MA_API ma_int16* ma_dr_wav_open_memory_and_read_pcm_frames_s16(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_memory(&wav, data, dataSize, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s16(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API float* ma_dr_wav_open_memory_and_read_pcm_frames_f32(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_memory(&wav, data, dataSize, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_f32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
MA_API ma_int32* ma_dr_wav_open_memory_and_read_pcm_frames_s32(const void* data, size_t dataSize, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_wav wav;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalFrameCountOut) {
        *totalFrameCountOut = 0;
    }
    if (!ma_dr_wav_init_memory(&wav, data, dataSize, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_wav__read_pcm_frames_and_close_s32(&wav, channelsOut, sampleRateOut, totalFrameCountOut);
}
#endif
MA_API void ma_dr_wav_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        ma_dr_wav__free_from_callbacks(p, pAllocationCallbacks);
    } else {
        ma_dr_wav__free_default(p, NULL);
    }
}
MA_API ma_uint16 ma_dr_wav_bytes_to_u16(const ma_uint8* data)
{
    return ((ma_uint16)data[0] << 0) | ((ma_uint16)data[1] << 8);
}
MA_API ma_int16 ma_dr_wav_bytes_to_s16(const ma_uint8* data)
{
    return (ma_int16)ma_dr_wav_bytes_to_u16(data);
}
MA_API ma_uint32 ma_dr_wav_bytes_to_u32(const ma_uint8* data)
{
    return ma_dr_wav_bytes_to_u32_le(data);
}
MA_API float ma_dr_wav_bytes_to_f32(const ma_uint8* data)
{
    union {
        ma_uint32 u32;
        float f32;
    } value;
    value.u32 = ma_dr_wav_bytes_to_u32(data);
    return value.f32;
}
MA_API ma_int32 ma_dr_wav_bytes_to_s32(const ma_uint8* data)
{
    return (ma_int32)ma_dr_wav_bytes_to_u32(data);
}
MA_API ma_uint64 ma_dr_wav_bytes_to_u64(const ma_uint8* data)
{
    return
        ((ma_uint64)data[0] <<  0) | ((ma_uint64)data[1] <<  8) | ((ma_uint64)data[2] << 16) | ((ma_uint64)data[3] << 24) |
        ((ma_uint64)data[4] << 32) | ((ma_uint64)data[5] << 40) | ((ma_uint64)data[6] << 48) | ((ma_uint64)data[7] << 56);
}
MA_API ma_int64 ma_dr_wav_bytes_to_s64(const ma_uint8* data)
{
    return (ma_int64)ma_dr_wav_bytes_to_u64(data);
}
MA_API ma_bool32 ma_dr_wav_guid_equal(const ma_uint8 a[16], const ma_uint8 b[16])
{
    int i;
    for (i = 0; i < 16; i += 1) {
        if (a[i] != b[i]) {
            return MA_FALSE;
        }
    }
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_wav_fourcc_equal(const ma_uint8* a, const char* b)
{
    return
        a[0] == b[0] &&
        a[1] == b[1] &&
        a[2] == b[2] &&
        a[3] == b[3];
}
#ifdef __MRC__
#pragma options opt reset
#endif
#endif
/* dr_wav_c end */
#endif  /* MA_DR_WAV_IMPLEMENTATION */
#endif  /* MA_NO_WAV */

#if !defined(MA_NO_FLAC) && !defined(MA_NO_DECODING)
#if !defined(MA_DR_FLAC_IMPLEMENTATION)
/* dr_flac_c begin */
#ifndef ma_dr_flac_c
#define ma_dr_flac_c
#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic push
    #if __GNUC__ >= 7
    #pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
    #endif
#endif
#ifdef __linux__
    #ifndef _BSD_SOURCE
        #define _BSD_SOURCE
    #endif
    #ifndef _DEFAULT_SOURCE
        #define _DEFAULT_SOURCE
    #endif
    #ifndef __USE_BSD
        #define __USE_BSD
    #endif
    #include <endian.h>
#endif
#include <stdlib.h>
#include <string.h>
#if !defined(MA_DR_FLAC_NO_SIMD)
    #if defined(MA_X64) || defined(MA_X86)
        #if defined(_MSC_VER) && !defined(__clang__)
            #if _MSC_VER >= 1400 && !defined(MA_DR_FLAC_NO_SSE2)
                #define MA_DR_FLAC_SUPPORT_SSE2
            #endif
            #if _MSC_VER >= 1600 && !defined(MA_DR_FLAC_NO_SSE41)
                #define MA_DR_FLAC_SUPPORT_SSE41
            #endif
        #elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
            #if defined(__SSE2__) && !defined(MA_DR_FLAC_NO_SSE2)
                #define MA_DR_FLAC_SUPPORT_SSE2
            #endif
            #if defined(__SSE4_1__) && !defined(MA_DR_FLAC_NO_SSE41)
                #define MA_DR_FLAC_SUPPORT_SSE41
            #endif
        #endif
        #if !defined(__GNUC__) && !defined(__clang__) && defined(__has_include)
            #if !defined(MA_DR_FLAC_SUPPORT_SSE2) && !defined(MA_DR_FLAC_NO_SSE2) && __has_include(<emmintrin.h>)
                #define MA_DR_FLAC_SUPPORT_SSE2
            #endif
            #if !defined(MA_DR_FLAC_SUPPORT_SSE41) && !defined(MA_DR_FLAC_NO_SSE41) && __has_include(<smmintrin.h>)
                #define MA_DR_FLAC_SUPPORT_SSE41
            #endif
        #endif
        #if defined(MA_DR_FLAC_SUPPORT_SSE41)
            #include <smmintrin.h>
        #elif defined(MA_DR_FLAC_SUPPORT_SSE2)
            #include <emmintrin.h>
        #endif
    #endif
    #if defined(MA_ARM)
        #if !defined(MA_DR_FLAC_NO_NEON) && (defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64))
            #define MA_DR_FLAC_SUPPORT_NEON
            #include <arm_neon.h>
        #endif
    #endif
#endif
#if !defined(MA_DR_FLAC_NO_SIMD) && (defined(MA_X86) || defined(MA_X64))
    #if defined(_MSC_VER) && !defined(__clang__)
        #if _MSC_VER >= 1400
            #include <intrin.h>
            static void ma_dr_flac__cpuid(int info[4], int fid)
            {
                __cpuid(info, fid);
            }
        #else
            #define MA_DR_FLAC_NO_CPUID
        #endif
    #else
        #if defined(__GNUC__) || defined(__clang__)
            static void ma_dr_flac__cpuid(int info[4], int fid)
            {
                #if defined(MA_X86) && defined(__PIC__)
                    __asm__ __volatile__ (
                        "xchg{l} {%%}ebx, %k1;"
                        "cpuid;"
                        "xchg{l} {%%}ebx, %k1;"
                        : "=a"(info[0]), "=&r"(info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(fid), "c"(0)
                    );
                #else
                    __asm__ __volatile__ (
                        "cpuid" : "=a"(info[0]), "=b"(info[1]), "=c"(info[2]), "=d"(info[3]) : "a"(fid), "c"(0)
                    );
                #endif
            }
        #else
            #define MA_DR_FLAC_NO_CPUID
        #endif
    #endif
#else
    #define MA_DR_FLAC_NO_CPUID
#endif
static MA_INLINE ma_bool32 ma_dr_flac_has_sse2(void)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_DR_FLAC_NO_SSE2)
        #if defined(MA_X64)
            return MA_TRUE;
        #elif (defined(_M_IX86_FP) && _M_IX86_FP == 2) || defined(__SSE2__)
            return MA_TRUE;
        #else
            #if defined(MA_DR_FLAC_NO_CPUID)
                return MA_FALSE;
            #else
                int info[4];
                ma_dr_flac__cpuid(info, 1);
                return (info[3] & (1 << 26)) != 0;
            #endif
        #endif
    #else
        return MA_FALSE;
    #endif
#else
    return MA_FALSE;
#endif
}
static MA_INLINE ma_bool32 ma_dr_flac_has_sse41(void)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE41)
    #if (defined(MA_X64) || defined(MA_X86)) && !defined(MA_DR_FLAC_NO_SSE41)
        #if defined(__SSE4_1__) || defined(__AVX__)
            return MA_TRUE;
        #else
            #if defined(MA_DR_FLAC_NO_CPUID)
                return MA_FALSE;
            #else
                int info[4];
                ma_dr_flac__cpuid(info, 1);
                return (info[2] & (1 << 19)) != 0;
            #endif
        #endif
    #else
        return MA_FALSE;
    #endif
#else
    return MA_FALSE;
#endif
}
#if defined(_MSC_VER) && _MSC_VER >= 1500 && (defined(MA_X86) || defined(MA_X64)) && !defined(__clang__)
    #define MA_DR_FLAC_HAS_LZCNT_INTRINSIC
#elif (defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)))
    #define MA_DR_FLAC_HAS_LZCNT_INTRINSIC
#elif defined(__clang__)
    #if defined(__has_builtin)
        #if __has_builtin(__builtin_clzll) || __has_builtin(__builtin_clzl)
            #define MA_DR_FLAC_HAS_LZCNT_INTRINSIC
        #endif
    #endif
#endif
#if defined(_MSC_VER) && _MSC_VER >= 1400 && !defined(__clang__)
    #define MA_DR_FLAC_HAS_BYTESWAP16_INTRINSIC
    #define MA_DR_FLAC_HAS_BYTESWAP32_INTRINSIC
    #define MA_DR_FLAC_HAS_BYTESWAP64_INTRINSIC
#elif defined(__clang__)
    #if defined(__has_builtin)
        #if __has_builtin(__builtin_bswap16)
            #define MA_DR_FLAC_HAS_BYTESWAP16_INTRINSIC
        #endif
        #if __has_builtin(__builtin_bswap32)
            #define MA_DR_FLAC_HAS_BYTESWAP32_INTRINSIC
        #endif
        #if __has_builtin(__builtin_bswap64)
            #define MA_DR_FLAC_HAS_BYTESWAP64_INTRINSIC
        #endif
    #endif
#elif defined(__GNUC__)
    #if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
        #define MA_DR_FLAC_HAS_BYTESWAP32_INTRINSIC
        #define MA_DR_FLAC_HAS_BYTESWAP64_INTRINSIC
    #endif
    #if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
        #define MA_DR_FLAC_HAS_BYTESWAP16_INTRINSIC
    #endif
#elif defined(__WATCOMC__) && defined(__386__)
    #define MA_DR_FLAC_HAS_BYTESWAP16_INTRINSIC
    #define MA_DR_FLAC_HAS_BYTESWAP32_INTRINSIC
    #define MA_DR_FLAC_HAS_BYTESWAP64_INTRINSIC
    extern __inline ma_uint16 _watcom_bswap16(ma_uint16);
    extern __inline ma_uint32 _watcom_bswap32(ma_uint32);
    extern __inline ma_uint64 _watcom_bswap64(ma_uint64);
#pragma aux _watcom_bswap16 = \
    "xchg al, ah" \
    parm  [ax]    \
    value [ax]    \
    modify nomemory;
#pragma aux _watcom_bswap32 = \
    "bswap eax" \
    parm  [eax] \
    value [eax] \
    modify nomemory;
#pragma aux _watcom_bswap64 = \
    "bswap eax"     \
    "bswap edx"     \
    "xchg eax,edx"  \
    parm [eax edx]  \
    value [eax edx] \
    modify nomemory;
#endif
#ifndef MA_DR_FLAC_ASSERT
#include <assert.h>
#define MA_DR_FLAC_ASSERT(expression)           assert(expression)
#endif
#ifndef MA_DR_FLAC_MALLOC
#define MA_DR_FLAC_MALLOC(sz)                   malloc((sz))
#endif
#ifndef MA_DR_FLAC_REALLOC
#define MA_DR_FLAC_REALLOC(p, sz)               realloc((p), (sz))
#endif
#ifndef MA_DR_FLAC_FREE
#define MA_DR_FLAC_FREE(p)                      free((p))
#endif
#ifndef MA_DR_FLAC_COPY_MEMORY
#define MA_DR_FLAC_COPY_MEMORY(dst, src, sz)    memcpy((dst), (src), (sz))
#endif
#ifndef MA_DR_FLAC_ZERO_MEMORY
#define MA_DR_FLAC_ZERO_MEMORY(p, sz)           memset((p), 0, (sz))
#endif
#ifndef MA_DR_FLAC_ZERO_OBJECT
#define MA_DR_FLAC_ZERO_OBJECT(p)               MA_DR_FLAC_ZERO_MEMORY((p), sizeof(*(p)))
#endif
#define MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE                     64
#define MA_DR_FLAC_SUBFRAME_CONSTANT                        0
#define MA_DR_FLAC_SUBFRAME_VERBATIM                        1
#define MA_DR_FLAC_SUBFRAME_FIXED                           8
#define MA_DR_FLAC_SUBFRAME_LPC                             32
#define MA_DR_FLAC_SUBFRAME_RESERVED                        255
#define MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE  0
#define MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE2 1
#define MA_DR_FLAC_CHANNEL_ASSIGNMENT_INDEPENDENT           0
#define MA_DR_FLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE             8
#define MA_DR_FLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE            9
#define MA_DR_FLAC_CHANNEL_ASSIGNMENT_MID_SIDE              10
#define MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES                  18
#define MA_DR_FLAC_CUESHEET_TRACK_SIZE_IN_BYTES             36
#define MA_DR_FLAC_CUESHEET_TRACK_INDEX_SIZE_IN_BYTES       12
#define ma_dr_flac_align(x, a)                              ((((x) + (a) - 1) / (a)) * (a))
MA_API void ma_dr_flac_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision)
{
    if (pMajor) {
        *pMajor = MA_DR_FLAC_VERSION_MAJOR;
    }
    if (pMinor) {
        *pMinor = MA_DR_FLAC_VERSION_MINOR;
    }
    if (pRevision) {
        *pRevision = MA_DR_FLAC_VERSION_REVISION;
    }
}
MA_API const char* ma_dr_flac_version_string(void)
{
    return MA_DR_FLAC_VERSION_STRING;
}
#if defined(__has_feature)
    #if __has_feature(thread_sanitizer)
        #define MA_DR_FLAC_NO_THREAD_SANITIZE __attribute__((no_sanitize("thread")))
    #else
        #define MA_DR_FLAC_NO_THREAD_SANITIZE
    #endif
#else
    #define MA_DR_FLAC_NO_THREAD_SANITIZE
#endif
#if defined(MA_DR_FLAC_HAS_LZCNT_INTRINSIC)
static ma_bool32 ma_dr_flac__gIsLZCNTSupported = MA_FALSE;
#endif
#ifndef MA_DR_FLAC_NO_CPUID
static ma_bool32 ma_dr_flac__gIsSSE2Supported  = MA_FALSE;
static ma_bool32 ma_dr_flac__gIsSSE41Supported = MA_FALSE;
MA_DR_FLAC_NO_THREAD_SANITIZE static void ma_dr_flac__init_cpu_caps(void)
{
    static ma_bool32 isCPUCapsInitialized = MA_FALSE;
    if (!isCPUCapsInitialized) {
#if defined(MA_DR_FLAC_HAS_LZCNT_INTRINSIC)
        int info[4] = {0};
        ma_dr_flac__cpuid(info, 0x80000001);
        ma_dr_flac__gIsLZCNTSupported = (info[2] & (1 << 5)) != 0;
#endif
        ma_dr_flac__gIsSSE2Supported = ma_dr_flac_has_sse2();
        ma_dr_flac__gIsSSE41Supported = ma_dr_flac_has_sse41();
        isCPUCapsInitialized = MA_TRUE;
    }
}
#else
static ma_bool32 ma_dr_flac__gIsNEONSupported  = MA_FALSE;
static MA_INLINE ma_bool32 ma_dr_flac__has_neon(void)
{
#if defined(MA_DR_FLAC_SUPPORT_NEON)
    #if defined(MA_ARM) && !defined(MA_DR_FLAC_NO_NEON)
        #if (defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64))
            return MA_TRUE;
        #else
            return MA_FALSE;
        #endif
    #else
        return MA_FALSE;
    #endif
#else
    return MA_FALSE;
#endif
}
MA_DR_FLAC_NO_THREAD_SANITIZE static void ma_dr_flac__init_cpu_caps(void)
{
    ma_dr_flac__gIsNEONSupported = ma_dr_flac__has_neon();
#if defined(MA_DR_FLAC_HAS_LZCNT_INTRINSIC) && defined(MA_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 5)
    ma_dr_flac__gIsLZCNTSupported = MA_TRUE;
#endif
}
#endif
static MA_INLINE ma_bool32 ma_dr_flac__is_little_endian(void)
{
#if defined(MA_X86) || defined(MA_X64)
    return MA_TRUE;
#elif defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN
    return MA_TRUE;
#else
    int n = 1;
    return (*(char*)&n) == 1;
#endif
}
static MA_INLINE ma_uint16 ma_dr_flac__swap_endian_uint16(ma_uint16 n)
{
#ifdef MA_DR_FLAC_HAS_BYTESWAP16_INTRINSIC
    #if defined(_MSC_VER) && !defined(__clang__)
        return _byteswap_ushort(n);
    #elif defined(__GNUC__) || defined(__clang__)
        return __builtin_bswap16(n);
    #elif defined(__WATCOMC__) && defined(__386__)
        return _watcom_bswap16(n);
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & 0xFF00) >> 8) |
           ((n & 0x00FF) << 8);
#endif
}
static MA_INLINE ma_uint32 ma_dr_flac__swap_endian_uint32(ma_uint32 n)
{
#ifdef MA_DR_FLAC_HAS_BYTESWAP32_INTRINSIC
    #if defined(_MSC_VER) && !defined(__clang__)
        return _byteswap_ulong(n);
    #elif defined(__GNUC__) || defined(__clang__)
        #if defined(MA_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 6) && !defined(__ARM_ARCH_6M__) && !defined(MA_64BIT)
            ma_uint32 r;
            __asm__ __volatile__ (
            #if defined(MA_64BIT)
                "rev %w[out], %w[in]" : [out]"=r"(r) : [in]"r"(n)
            #else
                "rev %[out], %[in]" : [out]"=r"(r) : [in]"r"(n)
            #endif
            );
            return r;
        #else
            return __builtin_bswap32(n);
        #endif
    #elif defined(__WATCOMC__) && defined(__386__)
        return _watcom_bswap32(n);
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & 0xFF000000) >> 24) |
           ((n & 0x00FF0000) >>  8) |
           ((n & 0x0000FF00) <<  8) |
           ((n & 0x000000FF) << 24);
#endif
}
static MA_INLINE ma_uint64 ma_dr_flac__swap_endian_uint64(ma_uint64 n)
{
#ifdef MA_DR_FLAC_HAS_BYTESWAP64_INTRINSIC
    #if defined(_MSC_VER) && !defined(__clang__)
        return _byteswap_uint64(n);
    #elif defined(__GNUC__) || defined(__clang__)
        return __builtin_bswap64(n);
    #elif defined(__WATCOMC__) && defined(__386__)
        return _watcom_bswap64(n);
    #else
        #error "This compiler does not support the byte swap intrinsic."
    #endif
#else
    return ((n & ((ma_uint64)0xFF000000 << 32)) >> 56) |
           ((n & ((ma_uint64)0x00FF0000 << 32)) >> 40) |
           ((n & ((ma_uint64)0x0000FF00 << 32)) >> 24) |
           ((n & ((ma_uint64)0x000000FF << 32)) >>  8) |
           ((n & ((ma_uint64)0xFF000000      )) <<  8) |
           ((n & ((ma_uint64)0x00FF0000      )) << 24) |
           ((n & ((ma_uint64)0x0000FF00      )) << 40) |
           ((n & ((ma_uint64)0x000000FF      )) << 56);
#endif
}
static MA_INLINE ma_uint16 ma_dr_flac__be2host_16(ma_uint16 n)
{
    if (ma_dr_flac__is_little_endian()) {
        return ma_dr_flac__swap_endian_uint16(n);
    }
    return n;
}
static MA_INLINE ma_uint32 ma_dr_flac__be2host_32(ma_uint32 n)
{
    if (ma_dr_flac__is_little_endian()) {
        return ma_dr_flac__swap_endian_uint32(n);
    }
    return n;
}
static MA_INLINE ma_uint32 ma_dr_flac__be2host_32_ptr_unaligned(const void* pData)
{
    const ma_uint8* pNum = (ma_uint8*)pData;
    return *(pNum) << 24 | *(pNum+1) << 16 | *(pNum+2) << 8 | *(pNum+3);
}
static MA_INLINE ma_uint64 ma_dr_flac__be2host_64(ma_uint64 n)
{
    if (ma_dr_flac__is_little_endian()) {
        return ma_dr_flac__swap_endian_uint64(n);
    }
    return n;
}
static MA_INLINE ma_uint32 ma_dr_flac__le2host_32(ma_uint32 n)
{
    if (!ma_dr_flac__is_little_endian()) {
        return ma_dr_flac__swap_endian_uint32(n);
    }
    return n;
}
static MA_INLINE ma_uint32 ma_dr_flac__le2host_32_ptr_unaligned(const void* pData)
{
    const ma_uint8* pNum = (ma_uint8*)pData;
    return *pNum | *(pNum+1) << 8 |  *(pNum+2) << 16 | *(pNum+3) << 24;
}
static MA_INLINE ma_uint32 ma_dr_flac__unsynchsafe_32(ma_uint32 n)
{
    ma_uint32 result = 0;
    result |= (n & 0x7F000000) >> 3;
    result |= (n & 0x007F0000) >> 2;
    result |= (n & 0x00007F00) >> 1;
    result |= (n & 0x0000007F) >> 0;
    return result;
}
static ma_uint8 ma_dr_flac__crc8_table[] = {
    0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, 0x2D,
    0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65, 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D,
    0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
    0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1, 0xB4, 0xB3, 0xBA, 0xBD,
    0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2, 0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA,
    0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
    0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A,
    0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42, 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A,
    0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
    0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4,
    0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C, 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44,
    0x19, 0x1E, 0x17, 0x10, 0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
    0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63,
    0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B, 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13,
    0xAE, 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
    0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, 0xF3
};
static ma_uint16 ma_dr_flac__crc16_table[] = {
    0x0000, 0x8005, 0x800F, 0x000A, 0x801B, 0x001E, 0x0014, 0x8011,
    0x8033, 0x0036, 0x003C, 0x8039, 0x0028, 0x802D, 0x8027, 0x0022,
    0x8063, 0x0066, 0x006C, 0x8069, 0x0078, 0x807D, 0x8077, 0x0072,
    0x0050, 0x8055, 0x805F, 0x005A, 0x804B, 0x004E, 0x0044, 0x8041,
    0x80C3, 0x00C6, 0x00CC, 0x80C9, 0x00D8, 0x80DD, 0x80D7, 0x00D2,
    0x00F0, 0x80F5, 0x80FF, 0x00FA, 0x80EB, 0x00EE, 0x00E4, 0x80E1,
    0x00A0, 0x80A5, 0x80AF, 0x00AA, 0x80BB, 0x00BE, 0x00B4, 0x80B1,
    0x8093, 0x0096, 0x009C, 0x8099, 0x0088, 0x808D, 0x8087, 0x0082,
    0x8183, 0x0186, 0x018C, 0x8189, 0x0198, 0x819D, 0x8197, 0x0192,
    0x01B0, 0x81B5, 0x81BF, 0x01BA, 0x81AB, 0x01AE, 0x01A4, 0x81A1,
    0x01E0, 0x81E5, 0x81EF, 0x01EA, 0x81FB, 0x01FE, 0x01F4, 0x81F1,
    0x81D3, 0x01D6, 0x01DC, 0x81D9, 0x01C8, 0x81CD, 0x81C7, 0x01C2,
    0x0140, 0x8145, 0x814F, 0x014A, 0x815B, 0x015E, 0x0154, 0x8151,
    0x8173, 0x0176, 0x017C, 0x8179, 0x0168, 0x816D, 0x8167, 0x0162,
    0x8123, 0x0126, 0x012C, 0x8129, 0x0138, 0x813D, 0x8137, 0x0132,
    0x0110, 0x8115, 0x811F, 0x011A, 0x810B, 0x010E, 0x0104, 0x8101,
    0x8303, 0x0306, 0x030C, 0x8309, 0x0318, 0x831D, 0x8317, 0x0312,
    0x0330, 0x8335, 0x833F, 0x033A, 0x832B, 0x032E, 0x0324, 0x8321,
    0x0360, 0x8365, 0x836F, 0x036A, 0x837B, 0x037E, 0x0374, 0x8371,
    0x8353, 0x0356, 0x035C, 0x8359, 0x0348, 0x834D, 0x8347, 0x0342,
    0x03C0, 0x83C5, 0x83CF, 0x03CA, 0x83DB, 0x03DE, 0x03D4, 0x83D1,
    0x83F3, 0x03F6, 0x03FC, 0x83F9, 0x03E8, 0x83ED, 0x83E7, 0x03E2,
    0x83A3, 0x03A6, 0x03AC, 0x83A9, 0x03B8, 0x83BD, 0x83B7, 0x03B2,
    0x0390, 0x8395, 0x839F, 0x039A, 0x838B, 0x038E, 0x0384, 0x8381,
    0x0280, 0x8285, 0x828F, 0x028A, 0x829B, 0x029E, 0x0294, 0x8291,
    0x82B3, 0x02B6, 0x02BC, 0x82B9, 0x02A8, 0x82AD, 0x82A7, 0x02A2,
    0x82E3, 0x02E6, 0x02EC, 0x82E9, 0x02F8, 0x82FD, 0x82F7, 0x02F2,
    0x02D0, 0x82D5, 0x82DF, 0x02DA, 0x82CB, 0x02CE, 0x02C4, 0x82C1,
    0x8243, 0x0246, 0x024C, 0x8249, 0x0258, 0x825D, 0x8257, 0x0252,
    0x0270, 0x8275, 0x827F, 0x027A, 0x826B, 0x026E, 0x0264, 0x8261,
    0x0220, 0x8225, 0x822F, 0x022A, 0x823B, 0x023E, 0x0234, 0x8231,
    0x8213, 0x0216, 0x021C, 0x8219, 0x0208, 0x820D, 0x8207, 0x0202
};
static MA_INLINE ma_uint8 ma_dr_flac_crc8_byte(ma_uint8 crc, ma_uint8 data)
{
    return ma_dr_flac__crc8_table[crc ^ data];
}
static MA_INLINE ma_uint8 ma_dr_flac_crc8(ma_uint8 crc, ma_uint32 data, ma_uint32 count)
{
#ifdef MA_DR_FLAC_NO_CRC
    (void)crc;
    (void)data;
    (void)count;
    return 0;
#else
#if 0
    ma_uint8 p = 0x07;
    for (int i = count-1; i >= 0; --i) {
        ma_uint8 bit = (data & (1 << i)) >> i;
        if (crc & 0x80) {
            crc = ((crc << 1) | bit) ^ p;
        } else {
            crc = ((crc << 1) | bit);
        }
    }
    return crc;
#else
    ma_uint32 wholeBytes;
    ma_uint32 leftoverBits;
    ma_uint64 leftoverDataMask;
    static ma_uint64 leftoverDataMaskTable[8] = {
        0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F
    };
    MA_DR_FLAC_ASSERT(count <= 32);
    wholeBytes = count >> 3;
    leftoverBits = count - (wholeBytes*8);
    leftoverDataMask = leftoverDataMaskTable[leftoverBits];
    switch (wholeBytes) {
        case 4: crc = ma_dr_flac_crc8_byte(crc, (ma_uint8)((data & (0xFF000000UL << leftoverBits)) >> (24 + leftoverBits)));
        case 3: crc = ma_dr_flac_crc8_byte(crc, (ma_uint8)((data & (0x00FF0000UL << leftoverBits)) >> (16 + leftoverBits)));
        case 2: crc = ma_dr_flac_crc8_byte(crc, (ma_uint8)((data & (0x0000FF00UL << leftoverBits)) >> ( 8 + leftoverBits)));
        case 1: crc = ma_dr_flac_crc8_byte(crc, (ma_uint8)((data & (0x000000FFUL << leftoverBits)) >> ( 0 + leftoverBits)));
        case 0: if (leftoverBits > 0) crc = (ma_uint8)((crc << leftoverBits) ^ ma_dr_flac__crc8_table[(crc >> (8 - leftoverBits)) ^ (data & leftoverDataMask)]);
    }
    return crc;
#endif
#endif
}
static MA_INLINE ma_uint16 ma_dr_flac_crc16_byte(ma_uint16 crc, ma_uint8 data)
{
    return (crc << 8) ^ ma_dr_flac__crc16_table[(ma_uint8)(crc >> 8) ^ data];
}
static MA_INLINE ma_uint16 ma_dr_flac_crc16_cache(ma_uint16 crc, ma_dr_flac_cache_t data)
{
#ifdef MA_64BIT
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 56) & 0xFF));
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 48) & 0xFF));
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 40) & 0xFF));
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 32) & 0xFF));
#endif
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 24) & 0xFF));
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 16) & 0xFF));
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >>  8) & 0xFF));
    crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >>  0) & 0xFF));
    return crc;
}
static MA_INLINE ma_uint16 ma_dr_flac_crc16_bytes(ma_uint16 crc, ma_dr_flac_cache_t data, ma_uint32 byteCount)
{
    switch (byteCount)
    {
#ifdef MA_64BIT
    case 8: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 56) & 0xFF));
    case 7: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 48) & 0xFF));
    case 6: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 40) & 0xFF));
    case 5: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 32) & 0xFF));
#endif
    case 4: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 24) & 0xFF));
    case 3: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >> 16) & 0xFF));
    case 2: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >>  8) & 0xFF));
    case 1: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data >>  0) & 0xFF));
    }
    return crc;
}
#if 0
static MA_INLINE ma_uint16 ma_dr_flac_crc16__32bit(ma_uint16 crc, ma_uint32 data, ma_uint32 count)
{
#ifdef MA_DR_FLAC_NO_CRC
    (void)crc;
    (void)data;
    (void)count;
    return 0;
#else
#if 0
    ma_uint16 p = 0x8005;
    for (int i = count-1; i >= 0; --i) {
        ma_uint16 bit = (data & (1ULL << i)) >> i;
        if (r & 0x8000) {
            r = ((r << 1) | bit) ^ p;
        } else {
            r = ((r << 1) | bit);
        }
    }
    return crc;
#else
    ma_uint32 wholeBytes;
    ma_uint32 leftoverBits;
    ma_uint64 leftoverDataMask;
    static ma_uint64 leftoverDataMaskTable[8] = {
        0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F
    };
    MA_DR_FLAC_ASSERT(count <= 64);
    wholeBytes = count >> 3;
    leftoverBits = count & 7;
    leftoverDataMask = leftoverDataMaskTable[leftoverBits];
    switch (wholeBytes) {
        default:
        case 4: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (0xFF000000UL << leftoverBits)) >> (24 + leftoverBits)));
        case 3: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (0x00FF0000UL << leftoverBits)) >> (16 + leftoverBits)));
        case 2: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (0x0000FF00UL << leftoverBits)) >> ( 8 + leftoverBits)));
        case 1: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (0x000000FFUL << leftoverBits)) >> ( 0 + leftoverBits)));
        case 0: if (leftoverBits > 0) crc = (crc << leftoverBits) ^ ma_dr_flac__crc16_table[(crc >> (16 - leftoverBits)) ^ (data & leftoverDataMask)];
    }
    return crc;
#endif
#endif
}
static MA_INLINE ma_uint16 ma_dr_flac_crc16__64bit(ma_uint16 crc, ma_uint64 data, ma_uint32 count)
{
#ifdef MA_DR_FLAC_NO_CRC
    (void)crc;
    (void)data;
    (void)count;
    return 0;
#else
    ma_uint32 wholeBytes;
    ma_uint32 leftoverBits;
    ma_uint64 leftoverDataMask;
    static ma_uint64 leftoverDataMaskTable[8] = {
        0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F
    };
    MA_DR_FLAC_ASSERT(count <= 64);
    wholeBytes = count >> 3;
    leftoverBits = count & 7;
    leftoverDataMask = leftoverDataMaskTable[leftoverBits];
    switch (wholeBytes) {
        default:
        case 8: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0xFF000000 << 32) << leftoverBits)) >> (56 + leftoverBits)));
        case 7: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0x00FF0000 << 32) << leftoverBits)) >> (48 + leftoverBits)));
        case 6: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0x0000FF00 << 32) << leftoverBits)) >> (40 + leftoverBits)));
        case 5: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0x000000FF << 32) << leftoverBits)) >> (32 + leftoverBits)));
        case 4: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0xFF000000      ) << leftoverBits)) >> (24 + leftoverBits)));
        case 3: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0x00FF0000      ) << leftoverBits)) >> (16 + leftoverBits)));
        case 2: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0x0000FF00      ) << leftoverBits)) >> ( 8 + leftoverBits)));
        case 1: crc = ma_dr_flac_crc16_byte(crc, (ma_uint8)((data & (((ma_uint64)0x000000FF      ) << leftoverBits)) >> ( 0 + leftoverBits)));
        case 0: if (leftoverBits > 0) crc = (crc << leftoverBits) ^ ma_dr_flac__crc16_table[(crc >> (16 - leftoverBits)) ^ (data & leftoverDataMask)];
    }
    return crc;
#endif
}
static MA_INLINE ma_uint16 ma_dr_flac_crc16(ma_uint16 crc, ma_dr_flac_cache_t data, ma_uint32 count)
{
#ifdef MA_64BIT
    return ma_dr_flac_crc16__64bit(crc, data, count);
#else
    return ma_dr_flac_crc16__32bit(crc, data, count);
#endif
}
#endif
#ifdef MA_64BIT
#define ma_dr_flac__be2host__cache_line ma_dr_flac__be2host_64
#else
#define ma_dr_flac__be2host__cache_line ma_dr_flac__be2host_32
#endif
#define MA_DR_FLAC_CACHE_L1_SIZE_BYTES(bs)                      (sizeof((bs)->cache))
#define MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)                       (sizeof((bs)->cache)*8)
#define MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)                  (MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs) - (bs)->consumedBits)
#define MA_DR_FLAC_CACHE_L1_SELECTION_MASK(_bitCount)           (~((~(ma_dr_flac_cache_t)0) >> (_bitCount)))
#define MA_DR_FLAC_CACHE_L1_SELECTION_SHIFT(bs, _bitCount)      (MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs) - (_bitCount))
#define MA_DR_FLAC_CACHE_L1_SELECT(bs, _bitCount)               (((bs)->cache) & MA_DR_FLAC_CACHE_L1_SELECTION_MASK(_bitCount))
#define MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT(bs, _bitCount)     (MA_DR_FLAC_CACHE_L1_SELECT((bs), (_bitCount)) >>  MA_DR_FLAC_CACHE_L1_SELECTION_SHIFT((bs), (_bitCount)))
#define MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT_SAFE(bs, _bitCount)(MA_DR_FLAC_CACHE_L1_SELECT((bs), (_bitCount)) >> (MA_DR_FLAC_CACHE_L1_SELECTION_SHIFT((bs), (_bitCount)) & (MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)-1)))
#define MA_DR_FLAC_CACHE_L2_SIZE_BYTES(bs)                      (sizeof((bs)->cacheL2))
#define MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)                      (MA_DR_FLAC_CACHE_L2_SIZE_BYTES(bs) / sizeof((bs)->cacheL2[0]))
#define MA_DR_FLAC_CACHE_L2_LINES_REMAINING(bs)                 (MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs) - (bs)->nextL2Line)
#ifndef MA_DR_FLAC_NO_CRC
static MA_INLINE void ma_dr_flac__reset_crc16(ma_dr_flac_bs* bs)
{
    bs->crc16 = 0;
    bs->crc16CacheIgnoredBytes = bs->consumedBits >> 3;
}
static MA_INLINE void ma_dr_flac__update_crc16(ma_dr_flac_bs* bs)
{
    if (bs->crc16CacheIgnoredBytes == 0) {
        bs->crc16 = ma_dr_flac_crc16_cache(bs->crc16, bs->crc16Cache);
    } else {
        bs->crc16 = ma_dr_flac_crc16_bytes(bs->crc16, bs->crc16Cache, MA_DR_FLAC_CACHE_L1_SIZE_BYTES(bs) - bs->crc16CacheIgnoredBytes);
        bs->crc16CacheIgnoredBytes = 0;
    }
}
static MA_INLINE ma_uint16 ma_dr_flac__flush_crc16(ma_dr_flac_bs* bs)
{
    MA_DR_FLAC_ASSERT((MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs) & 7) == 0);
    if (MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs) == 0) {
        ma_dr_flac__update_crc16(bs);
    } else {
        bs->crc16 = ma_dr_flac_crc16_bytes(bs->crc16, bs->crc16Cache >> MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs), (bs->consumedBits >> 3) - bs->crc16CacheIgnoredBytes);
        bs->crc16CacheIgnoredBytes = bs->consumedBits >> 3;
    }
    return bs->crc16;
}
#endif
static MA_INLINE ma_bool32 ma_dr_flac__reload_l1_cache_from_l2(ma_dr_flac_bs* bs)
{
    size_t bytesRead;
    size_t alignedL1LineCount;
    if (bs->nextL2Line < MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)) {
        bs->cache = bs->cacheL2[bs->nextL2Line++];
        return MA_TRUE;
    }
    if (bs->unalignedByteCount > 0) {
        return MA_FALSE;
    }
    bytesRead = bs->onRead(bs->pUserData, bs->cacheL2, MA_DR_FLAC_CACHE_L2_SIZE_BYTES(bs));
    bs->nextL2Line = 0;
    if (bytesRead == MA_DR_FLAC_CACHE_L2_SIZE_BYTES(bs)) {
        bs->cache = bs->cacheL2[bs->nextL2Line++];
        return MA_TRUE;
    }
    alignedL1LineCount = bytesRead / MA_DR_FLAC_CACHE_L1_SIZE_BYTES(bs);
    bs->unalignedByteCount = bytesRead - (alignedL1LineCount * MA_DR_FLAC_CACHE_L1_SIZE_BYTES(bs));
    if (bs->unalignedByteCount > 0) {
        bs->unalignedCache = bs->cacheL2[alignedL1LineCount];
    }
    if (alignedL1LineCount > 0) {
        size_t offset = MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs) - alignedL1LineCount;
        size_t i;
        for (i = alignedL1LineCount; i > 0; --i) {
            bs->cacheL2[i-1 + offset] = bs->cacheL2[i-1];
        }
        bs->nextL2Line = (ma_uint32)offset;
        bs->cache = bs->cacheL2[bs->nextL2Line++];
        return MA_TRUE;
    } else {
        bs->nextL2Line = MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs);
        return MA_FALSE;
    }
}
static ma_bool32 ma_dr_flac__reload_cache(ma_dr_flac_bs* bs)
{
    size_t bytesRead;
#ifndef MA_DR_FLAC_NO_CRC
    ma_dr_flac__update_crc16(bs);
#endif
    if (ma_dr_flac__reload_l1_cache_from_l2(bs)) {
        bs->cache = ma_dr_flac__be2host__cache_line(bs->cache);
        bs->consumedBits = 0;
#ifndef MA_DR_FLAC_NO_CRC
        bs->crc16Cache = bs->cache;
#endif
        return MA_TRUE;
    }
    bytesRead = bs->unalignedByteCount;
    if (bytesRead == 0) {
        bs->consumedBits = MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs);
        return MA_FALSE;
    }
    MA_DR_FLAC_ASSERT(bytesRead < MA_DR_FLAC_CACHE_L1_SIZE_BYTES(bs));
    bs->consumedBits = (ma_uint32)(MA_DR_FLAC_CACHE_L1_SIZE_BYTES(bs) - bytesRead) * 8;
    bs->cache = ma_dr_flac__be2host__cache_line(bs->unalignedCache);
    bs->cache &= MA_DR_FLAC_CACHE_L1_SELECTION_MASK(MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs));
    bs->unalignedByteCount = 0;
#ifndef MA_DR_FLAC_NO_CRC
    bs->crc16Cache = bs->cache >> bs->consumedBits;
    bs->crc16CacheIgnoredBytes = bs->consumedBits >> 3;
#endif
    return MA_TRUE;
}
static void ma_dr_flac__reset_cache(ma_dr_flac_bs* bs)
{
    bs->nextL2Line   = MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs);
    bs->consumedBits = MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs);
    bs->cache = 0;
    bs->unalignedByteCount = 0;
    bs->unalignedCache = 0;
#ifndef MA_DR_FLAC_NO_CRC
    bs->crc16Cache = 0;
    bs->crc16CacheIgnoredBytes = 0;
#endif
}
static MA_INLINE ma_bool32 ma_dr_flac__read_uint32(ma_dr_flac_bs* bs, unsigned int bitCount, ma_uint32* pResultOut)
{
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pResultOut != NULL);
    MA_DR_FLAC_ASSERT(bitCount > 0);
    MA_DR_FLAC_ASSERT(bitCount <= 32);
    if (bs->consumedBits == MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)) {
        if (!ma_dr_flac__reload_cache(bs)) {
            return MA_FALSE;
        }
    }
    if (bitCount <= MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
#ifdef MA_64BIT
        *pResultOut = (ma_uint32)MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT(bs, bitCount);
        bs->consumedBits += bitCount;
        bs->cache <<= bitCount;
#else
        if (bitCount < MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)) {
            *pResultOut = (ma_uint32)MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT(bs, bitCount);
            bs->consumedBits += bitCount;
            bs->cache <<= bitCount;
        } else {
            *pResultOut = (ma_uint32)bs->cache;
            bs->consumedBits = MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs);
            bs->cache = 0;
        }
#endif
        return MA_TRUE;
    } else {
        ma_uint32 bitCountHi = MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs);
        ma_uint32 bitCountLo = bitCount - bitCountHi;
        ma_uint32 resultHi;
        MA_DR_FLAC_ASSERT(bitCountHi > 0);
        MA_DR_FLAC_ASSERT(bitCountHi < 32);
        resultHi = (ma_uint32)MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT(bs, bitCountHi);
        if (!ma_dr_flac__reload_cache(bs)) {
            return MA_FALSE;
        }
        if (bitCountLo > MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
            return MA_FALSE;
        }
        *pResultOut = (resultHi << bitCountLo) | (ma_uint32)MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT(bs, bitCountLo);
        bs->consumedBits += bitCountLo;
        bs->cache <<= bitCountLo;
        return MA_TRUE;
    }
}
static ma_bool32 ma_dr_flac__read_int32(ma_dr_flac_bs* bs, unsigned int bitCount, ma_int32* pResult)
{
    ma_uint32 result;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pResult != NULL);
    MA_DR_FLAC_ASSERT(bitCount > 0);
    MA_DR_FLAC_ASSERT(bitCount <= 32);
    if (!ma_dr_flac__read_uint32(bs, bitCount, &result)) {
        return MA_FALSE;
    }
    if (bitCount < 32) {
        ma_uint32 signbit;
        signbit = ((result >> (bitCount-1)) & 0x01);
        result |= (~signbit + 1) << bitCount;
    }
    *pResult = (ma_int32)result;
    return MA_TRUE;
}
#ifdef MA_64BIT
static ma_bool32 ma_dr_flac__read_uint64(ma_dr_flac_bs* bs, unsigned int bitCount, ma_uint64* pResultOut)
{
    ma_uint32 resultHi;
    ma_uint32 resultLo;
    MA_DR_FLAC_ASSERT(bitCount <= 64);
    MA_DR_FLAC_ASSERT(bitCount >  32);
    if (!ma_dr_flac__read_uint32(bs, bitCount - 32, &resultHi)) {
        return MA_FALSE;
    }
    if (!ma_dr_flac__read_uint32(bs, 32, &resultLo)) {
        return MA_FALSE;
    }
    *pResultOut = (((ma_uint64)resultHi) << 32) | ((ma_uint64)resultLo);
    return MA_TRUE;
}
#endif
#if 0
static ma_bool32 ma_dr_flac__read_int64(ma_dr_flac_bs* bs, unsigned int bitCount, ma_int64* pResultOut)
{
    ma_uint64 result;
    ma_uint64 signbit;
    MA_DR_FLAC_ASSERT(bitCount <= 64);
    if (!ma_dr_flac__read_uint64(bs, bitCount, &result)) {
        return MA_FALSE;
    }
    signbit = ((result >> (bitCount-1)) & 0x01);
    result |= (~signbit + 1) << bitCount;
    *pResultOut = (ma_int64)result;
    return MA_TRUE;
}
#endif
static ma_bool32 ma_dr_flac__read_uint16(ma_dr_flac_bs* bs, unsigned int bitCount, ma_uint16* pResult)
{
    ma_uint32 result;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pResult != NULL);
    MA_DR_FLAC_ASSERT(bitCount > 0);
    MA_DR_FLAC_ASSERT(bitCount <= 16);
    if (!ma_dr_flac__read_uint32(bs, bitCount, &result)) {
        return MA_FALSE;
    }
    *pResult = (ma_uint16)result;
    return MA_TRUE;
}
#if 0
static ma_bool32 ma_dr_flac__read_int16(ma_dr_flac_bs* bs, unsigned int bitCount, ma_int16* pResult)
{
    ma_int32 result;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pResult != NULL);
    MA_DR_FLAC_ASSERT(bitCount > 0);
    MA_DR_FLAC_ASSERT(bitCount <= 16);
    if (!ma_dr_flac__read_int32(bs, bitCount, &result)) {
        return MA_FALSE;
    }
    *pResult = (ma_int16)result;
    return MA_TRUE;
}
#endif
static ma_bool32 ma_dr_flac__read_uint8(ma_dr_flac_bs* bs, unsigned int bitCount, ma_uint8* pResult)
{
    ma_uint32 result;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pResult != NULL);
    MA_DR_FLAC_ASSERT(bitCount > 0);
    MA_DR_FLAC_ASSERT(bitCount <= 8);
    if (!ma_dr_flac__read_uint32(bs, bitCount, &result)) {
        return MA_FALSE;
    }
    *pResult = (ma_uint8)result;
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__read_int8(ma_dr_flac_bs* bs, unsigned int bitCount, ma_int8* pResult)
{
    ma_int32 result;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pResult != NULL);
    MA_DR_FLAC_ASSERT(bitCount > 0);
    MA_DR_FLAC_ASSERT(bitCount <= 8);
    if (!ma_dr_flac__read_int32(bs, bitCount, &result)) {
        return MA_FALSE;
    }
    *pResult = (ma_int8)result;
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__seek_bits(ma_dr_flac_bs* bs, size_t bitsToSeek)
{
    if (bitsToSeek <= MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
        bs->consumedBits += (ma_uint32)bitsToSeek;
        bs->cache <<= bitsToSeek;
        return MA_TRUE;
    } else {
        bitsToSeek       -= MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs);
        bs->consumedBits += MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs);
        bs->cache         = 0;
#ifdef MA_64BIT
        while (bitsToSeek >= MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)) {
            ma_uint64 bin;
            if (!ma_dr_flac__read_uint64(bs, MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs), &bin)) {
                return MA_FALSE;
            }
            bitsToSeek -= MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs);
        }
#else
        while (bitsToSeek >= MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)) {
            ma_uint32 bin;
            if (!ma_dr_flac__read_uint32(bs, MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs), &bin)) {
                return MA_FALSE;
            }
            bitsToSeek -= MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs);
        }
#endif
        while (bitsToSeek >= 8) {
            ma_uint8 bin;
            if (!ma_dr_flac__read_uint8(bs, 8, &bin)) {
                return MA_FALSE;
            }
            bitsToSeek -= 8;
        }
        if (bitsToSeek > 0) {
            ma_uint8 bin;
            if (!ma_dr_flac__read_uint8(bs, (ma_uint32)bitsToSeek, &bin)) {
                return MA_FALSE;
            }
            bitsToSeek = 0;
        }
        MA_DR_FLAC_ASSERT(bitsToSeek == 0);
        return MA_TRUE;
    }
}
static ma_bool32 ma_dr_flac__find_and_seek_to_next_sync_code(ma_dr_flac_bs* bs)
{
    MA_DR_FLAC_ASSERT(bs != NULL);
    if (!ma_dr_flac__seek_bits(bs, MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs) & 7)) {
        return MA_FALSE;
    }
    for (;;) {
        ma_uint8 hi;
#ifndef MA_DR_FLAC_NO_CRC
        ma_dr_flac__reset_crc16(bs);
#endif
        if (!ma_dr_flac__read_uint8(bs, 8, &hi)) {
            return MA_FALSE;
        }
        if (hi == 0xFF) {
            ma_uint8 lo;
            if (!ma_dr_flac__read_uint8(bs, 6, &lo)) {
                return MA_FALSE;
            }
            if (lo == 0x3E) {
                return MA_TRUE;
            } else {
                if (!ma_dr_flac__seek_bits(bs, MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs) & 7)) {
                    return MA_FALSE;
                }
            }
        }
    }
}
#if defined(MA_DR_FLAC_HAS_LZCNT_INTRINSIC)
#define MA_DR_FLAC_IMPLEMENT_CLZ_LZCNT
#endif
#if  defined(_MSC_VER) && _MSC_VER >= 1400 && (defined(MA_X64) || defined(MA_X86)) && !defined(__clang__)
#define MA_DR_FLAC_IMPLEMENT_CLZ_MSVC
#endif
#if  defined(__WATCOMC__) && defined(__386__)
#define MA_DR_FLAC_IMPLEMENT_CLZ_WATCOM
#endif
#ifdef __MRC__
#include <intrinsics.h>
#define MA_DR_FLAC_IMPLEMENT_CLZ_MRC
#endif
static MA_INLINE ma_uint32 ma_dr_flac__clz_software(ma_dr_flac_cache_t x)
{
    ma_uint32 n;
    static ma_uint32 clz_table_4[] = {
        0,
        4,
        3, 3,
        2, 2, 2, 2,
        1, 1, 1, 1, 1, 1, 1, 1
    };
    if (x == 0) {
        return sizeof(x)*8;
    }
    n = clz_table_4[x >> (sizeof(x)*8 - 4)];
    if (n == 0) {
#ifdef MA_64BIT
        if ((x & ((ma_uint64)0xFFFFFFFF << 32)) == 0) { n  = 32; x <<= 32; }
        if ((x & ((ma_uint64)0xFFFF0000 << 32)) == 0) { n += 16; x <<= 16; }
        if ((x & ((ma_uint64)0xFF000000 << 32)) == 0) { n += 8;  x <<= 8;  }
        if ((x & ((ma_uint64)0xF0000000 << 32)) == 0) { n += 4;  x <<= 4;  }
#else
        if ((x & 0xFFFF0000) == 0) { n  = 16; x <<= 16; }
        if ((x & 0xFF000000) == 0) { n += 8;  x <<= 8;  }
        if ((x & 0xF0000000) == 0) { n += 4;  x <<= 4;  }
#endif
        n += clz_table_4[x >> (sizeof(x)*8 - 4)];
    }
    return n - 1;
}
#ifdef MA_DR_FLAC_IMPLEMENT_CLZ_LZCNT
static MA_INLINE ma_bool32 ma_dr_flac__is_lzcnt_supported(void)
{
#if defined(MA_DR_FLAC_HAS_LZCNT_INTRINSIC) && defined(MA_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 5)
    return MA_TRUE;
#elif defined(__MRC__)
    return MA_TRUE;
#else
    #ifdef MA_DR_FLAC_HAS_LZCNT_INTRINSIC
        return ma_dr_flac__gIsLZCNTSupported;
    #else
        return MA_FALSE;
    #endif
#endif
}
static MA_INLINE ma_uint32 ma_dr_flac__clz_lzcnt(ma_dr_flac_cache_t x)
{
#if defined(_MSC_VER)
    #ifdef MA_64BIT
        return (ma_uint32)__lzcnt64(x);
    #else
        return (ma_uint32)__lzcnt(x);
    #endif
#else
    #if defined(__GNUC__) || defined(__clang__)
        #if defined(MA_X64)
            {
                ma_uint64 r;
                __asm__ __volatile__ (
                    "lzcnt{ %1, %0| %0, %1}" : "=r"(r) : "r"(x) : "cc"
                );
                return (ma_uint32)r;
            }
        #elif defined(MA_X86)
            {
                ma_uint32 r;
                __asm__ __volatile__ (
                    "lzcnt{l %1, %0| %0, %1}" : "=r"(r) : "r"(x) : "cc"
                );
                return r;
            }
        #elif defined(MA_ARM) && (defined(__ARM_ARCH) && __ARM_ARCH >= 5) && !defined(__ARM_ARCH_6M__) && !defined(MA_64BIT)
            {
                unsigned int r;
                __asm__ __volatile__ (
                #if defined(MA_64BIT)
                    "clz %w[out], %w[in]" : [out]"=r"(r) : [in]"r"(x)
                #else
                    "clz %[out], %[in]" : [out]"=r"(r) : [in]"r"(x)
                #endif
                );
                return r;
            }
        #else
            if (x == 0) {
                return sizeof(x)*8;
            }
            #ifdef MA_64BIT
                return (ma_uint32)__builtin_clzll((ma_uint64)x);
            #else
                return (ma_uint32)__builtin_clzl((ma_uint32)x);
            #endif
        #endif
    #else
        #error "This compiler does not support the lzcnt intrinsic."
    #endif
#endif
}
#endif
#ifdef MA_DR_FLAC_IMPLEMENT_CLZ_MSVC
#include <intrin.h>
static MA_INLINE ma_uint32 ma_dr_flac__clz_msvc(ma_dr_flac_cache_t x)
{
    ma_uint32 n;
    if (x == 0) {
        return sizeof(x)*8;
    }
#ifdef MA_64BIT
    _BitScanReverse64((unsigned long*)&n, x);
#else
    _BitScanReverse((unsigned long*)&n, x);
#endif
    return sizeof(x)*8 - n - 1;
}
#endif
#ifdef MA_DR_FLAC_IMPLEMENT_CLZ_WATCOM
static __inline ma_uint32 ma_dr_flac__clz_watcom (ma_uint32);
#ifdef MA_DR_FLAC_IMPLEMENT_CLZ_WATCOM_LZCNT
#pragma aux ma_dr_flac__clz_watcom_lzcnt = \
    "db 0F3h, 0Fh, 0BDh, 0C0h"  \
    parm [eax] \
    value [eax] \
    modify nomemory;
#else
#pragma aux ma_dr_flac__clz_watcom = \
    "bsr eax, eax" \
    "xor eax, 31" \
    parm [eax] nomemory \
    value [eax] \
    modify exact [eax] nomemory;
#endif
#endif
static MA_INLINE ma_uint32 ma_dr_flac__clz(ma_dr_flac_cache_t x)
{
#ifdef MA_DR_FLAC_IMPLEMENT_CLZ_LZCNT
    if (ma_dr_flac__is_lzcnt_supported()) {
        return ma_dr_flac__clz_lzcnt(x);
    } else
#endif
    {
#ifdef MA_DR_FLAC_IMPLEMENT_CLZ_MSVC
        return ma_dr_flac__clz_msvc(x);
#elif defined(MA_DR_FLAC_IMPLEMENT_CLZ_WATCOM_LZCNT)
        return ma_dr_flac__clz_watcom_lzcnt(x);
#elif defined(MA_DR_FLAC_IMPLEMENT_CLZ_WATCOM)
        return (x == 0) ? sizeof(x)*8 : ma_dr_flac__clz_watcom(x);
#elif defined(__MRC__)
        return __cntlzw(x);
#else
        return ma_dr_flac__clz_software(x);
#endif
    }
}
static MA_INLINE ma_bool32 ma_dr_flac__seek_past_next_set_bit(ma_dr_flac_bs* bs, unsigned int* pOffsetOut)
{
    ma_uint32 zeroCounter = 0;
    ma_uint32 setBitOffsetPlus1;
    while (bs->cache == 0) {
        zeroCounter += (ma_uint32)MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs);
        if (!ma_dr_flac__reload_cache(bs)) {
            return MA_FALSE;
        }
    }
    if (bs->cache == 1) {
        *pOffsetOut = zeroCounter + (ma_uint32)MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs) - 1;
        if (!ma_dr_flac__reload_cache(bs)) {
            return MA_FALSE;
        }
        return MA_TRUE;
    }
    setBitOffsetPlus1 = ma_dr_flac__clz(bs->cache);
    setBitOffsetPlus1 += 1;
    if (setBitOffsetPlus1 > MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
        return MA_FALSE;
    }
    bs->consumedBits += setBitOffsetPlus1;
    bs->cache <<= setBitOffsetPlus1;
    *pOffsetOut = zeroCounter + setBitOffsetPlus1 - 1;
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__seek_to_byte(ma_dr_flac_bs* bs, ma_uint64 offsetFromStart)
{
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(offsetFromStart > 0);
    if (offsetFromStart > 0x7FFFFFFF) {
        ma_uint64 bytesRemaining = offsetFromStart;
        if (!bs->onSeek(bs->pUserData, 0x7FFFFFFF, ma_dr_flac_seek_origin_start)) {
            return MA_FALSE;
        }
        bytesRemaining -= 0x7FFFFFFF;
        while (bytesRemaining > 0x7FFFFFFF) {
            if (!bs->onSeek(bs->pUserData, 0x7FFFFFFF, ma_dr_flac_seek_origin_current)) {
                return MA_FALSE;
            }
            bytesRemaining -= 0x7FFFFFFF;
        }
        if (bytesRemaining > 0) {
            if (!bs->onSeek(bs->pUserData, (int)bytesRemaining, ma_dr_flac_seek_origin_current)) {
                return MA_FALSE;
            }
        }
    } else {
        if (!bs->onSeek(bs->pUserData, (int)offsetFromStart, ma_dr_flac_seek_origin_start)) {
            return MA_FALSE;
        }
    }
    ma_dr_flac__reset_cache(bs);
    return MA_TRUE;
}
static ma_result ma_dr_flac__read_utf8_coded_number(ma_dr_flac_bs* bs, ma_uint64* pNumberOut, ma_uint8* pCRCOut)
{
    ma_uint8 crc;
    ma_uint64 result;
    ma_uint8 utf8[7] = {0};
    int byteCount;
    int i;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pNumberOut != NULL);
    MA_DR_FLAC_ASSERT(pCRCOut != NULL);
    crc = *pCRCOut;
    if (!ma_dr_flac__read_uint8(bs, 8, utf8)) {
        *pNumberOut = 0;
        return MA_AT_END;
    }
    crc = ma_dr_flac_crc8(crc, utf8[0], 8);
    if ((utf8[0] & 0x80) == 0) {
        *pNumberOut = utf8[0];
        *pCRCOut = crc;
        return MA_SUCCESS;
    }
    if ((utf8[0] & 0xE0) == 0xC0) {
        byteCount = 2;
    } else if ((utf8[0] & 0xF0) == 0xE0) {
        byteCount = 3;
    } else if ((utf8[0] & 0xF8) == 0xF0) {
        byteCount = 4;
    } else if ((utf8[0] & 0xFC) == 0xF8) {
        byteCount = 5;
    } else if ((utf8[0] & 0xFE) == 0xFC) {
        byteCount = 6;
    } else if ((utf8[0] & 0xFF) == 0xFE) {
        byteCount = 7;
    } else {
        *pNumberOut = 0;
        return MA_CRC_MISMATCH;
    }
    MA_DR_FLAC_ASSERT(byteCount > 1);
    result = (ma_uint64)(utf8[0] & (0xFF >> (byteCount + 1)));
    for (i = 1; i < byteCount; ++i) {
        if (!ma_dr_flac__read_uint8(bs, 8, utf8 + i)) {
            *pNumberOut = 0;
            return MA_AT_END;
        }
        crc = ma_dr_flac_crc8(crc, utf8[i], 8);
        result = (result << 6) | (utf8[i] & 0x3F);
    }
    *pNumberOut = result;
    *pCRCOut = crc;
    return MA_SUCCESS;
}
static MA_INLINE ma_uint32 ma_dr_flac__ilog2_u32(ma_uint32 x)
{
#if 1
    ma_uint32 result = 0;
    while (x > 0) {
        result += 1;
        x >>= 1;
    }
    return result;
#endif
}
static MA_INLINE ma_bool32 ma_dr_flac__use_64_bit_prediction(ma_uint32 bitsPerSample, ma_uint32 order, ma_uint32 precision)
{
    return bitsPerSample + precision + ma_dr_flac__ilog2_u32(order) > 32;
}
#if defined(__clang__)
__attribute__((no_sanitize("signed-integer-overflow")))
#endif
static MA_INLINE ma_int32 ma_dr_flac__calculate_prediction_32(ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pDecodedSamples)
{
    ma_int32 prediction = 0;
    MA_DR_FLAC_ASSERT(order <= 32);
    switch (order)
    {
    case 32: prediction += coefficients[31] * pDecodedSamples[-32];
    case 31: prediction += coefficients[30] * pDecodedSamples[-31];
    case 30: prediction += coefficients[29] * pDecodedSamples[-30];
    case 29: prediction += coefficients[28] * pDecodedSamples[-29];
    case 28: prediction += coefficients[27] * pDecodedSamples[-28];
    case 27: prediction += coefficients[26] * pDecodedSamples[-27];
    case 26: prediction += coefficients[25] * pDecodedSamples[-26];
    case 25: prediction += coefficients[24] * pDecodedSamples[-25];
    case 24: prediction += coefficients[23] * pDecodedSamples[-24];
    case 23: prediction += coefficients[22] * pDecodedSamples[-23];
    case 22: prediction += coefficients[21] * pDecodedSamples[-22];
    case 21: prediction += coefficients[20] * pDecodedSamples[-21];
    case 20: prediction += coefficients[19] * pDecodedSamples[-20];
    case 19: prediction += coefficients[18] * pDecodedSamples[-19];
    case 18: prediction += coefficients[17] * pDecodedSamples[-18];
    case 17: prediction += coefficients[16] * pDecodedSamples[-17];
    case 16: prediction += coefficients[15] * pDecodedSamples[-16];
    case 15: prediction += coefficients[14] * pDecodedSamples[-15];
    case 14: prediction += coefficients[13] * pDecodedSamples[-14];
    case 13: prediction += coefficients[12] * pDecodedSamples[-13];
    case 12: prediction += coefficients[11] * pDecodedSamples[-12];
    case 11: prediction += coefficients[10] * pDecodedSamples[-11];
    case 10: prediction += coefficients[ 9] * pDecodedSamples[-10];
    case  9: prediction += coefficients[ 8] * pDecodedSamples[- 9];
    case  8: prediction += coefficients[ 7] * pDecodedSamples[- 8];
    case  7: prediction += coefficients[ 6] * pDecodedSamples[- 7];
    case  6: prediction += coefficients[ 5] * pDecodedSamples[- 6];
    case  5: prediction += coefficients[ 4] * pDecodedSamples[- 5];
    case  4: prediction += coefficients[ 3] * pDecodedSamples[- 4];
    case  3: prediction += coefficients[ 2] * pDecodedSamples[- 3];
    case  2: prediction += coefficients[ 1] * pDecodedSamples[- 2];
    case  1: prediction += coefficients[ 0] * pDecodedSamples[- 1];
    }
    return (ma_int32)(prediction >> shift);
}
static MA_INLINE ma_int32 ma_dr_flac__calculate_prediction_64(ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pDecodedSamples)
{
    ma_int64 prediction;
    MA_DR_FLAC_ASSERT(order <= 32);
#ifndef MA_64BIT
    if (order == 8)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2] * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3] * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4] * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5] * (ma_int64)pDecodedSamples[-6];
        prediction += coefficients[6] * (ma_int64)pDecodedSamples[-7];
        prediction += coefficients[7] * (ma_int64)pDecodedSamples[-8];
    }
    else if (order == 7)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2] * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3] * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4] * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5] * (ma_int64)pDecodedSamples[-6];
        prediction += coefficients[6] * (ma_int64)pDecodedSamples[-7];
    }
    else if (order == 3)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2] * (ma_int64)pDecodedSamples[-3];
    }
    else if (order == 6)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2] * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3] * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4] * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5] * (ma_int64)pDecodedSamples[-6];
    }
    else if (order == 5)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2] * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3] * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4] * (ma_int64)pDecodedSamples[-5];
    }
    else if (order == 4)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2] * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3] * (ma_int64)pDecodedSamples[-4];
    }
    else if (order == 12)
    {
        prediction  = coefficients[0]  * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1]  * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2]  * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3]  * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4]  * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5]  * (ma_int64)pDecodedSamples[-6];
        prediction += coefficients[6]  * (ma_int64)pDecodedSamples[-7];
        prediction += coefficients[7]  * (ma_int64)pDecodedSamples[-8];
        prediction += coefficients[8]  * (ma_int64)pDecodedSamples[-9];
        prediction += coefficients[9]  * (ma_int64)pDecodedSamples[-10];
        prediction += coefficients[10] * (ma_int64)pDecodedSamples[-11];
        prediction += coefficients[11] * (ma_int64)pDecodedSamples[-12];
    }
    else if (order == 2)
    {
        prediction  = coefficients[0] * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1] * (ma_int64)pDecodedSamples[-2];
    }
    else if (order == 1)
    {
        prediction = coefficients[0] * (ma_int64)pDecodedSamples[-1];
    }
    else if (order == 10)
    {
        prediction  = coefficients[0]  * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1]  * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2]  * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3]  * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4]  * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5]  * (ma_int64)pDecodedSamples[-6];
        prediction += coefficients[6]  * (ma_int64)pDecodedSamples[-7];
        prediction += coefficients[7]  * (ma_int64)pDecodedSamples[-8];
        prediction += coefficients[8]  * (ma_int64)pDecodedSamples[-9];
        prediction += coefficients[9]  * (ma_int64)pDecodedSamples[-10];
    }
    else if (order == 9)
    {
        prediction  = coefficients[0]  * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1]  * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2]  * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3]  * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4]  * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5]  * (ma_int64)pDecodedSamples[-6];
        prediction += coefficients[6]  * (ma_int64)pDecodedSamples[-7];
        prediction += coefficients[7]  * (ma_int64)pDecodedSamples[-8];
        prediction += coefficients[8]  * (ma_int64)pDecodedSamples[-9];
    }
    else if (order == 11)
    {
        prediction  = coefficients[0]  * (ma_int64)pDecodedSamples[-1];
        prediction += coefficients[1]  * (ma_int64)pDecodedSamples[-2];
        prediction += coefficients[2]  * (ma_int64)pDecodedSamples[-3];
        prediction += coefficients[3]  * (ma_int64)pDecodedSamples[-4];
        prediction += coefficients[4]  * (ma_int64)pDecodedSamples[-5];
        prediction += coefficients[5]  * (ma_int64)pDecodedSamples[-6];
        prediction += coefficients[6]  * (ma_int64)pDecodedSamples[-7];
        prediction += coefficients[7]  * (ma_int64)pDecodedSamples[-8];
        prediction += coefficients[8]  * (ma_int64)pDecodedSamples[-9];
        prediction += coefficients[9]  * (ma_int64)pDecodedSamples[-10];
        prediction += coefficients[10] * (ma_int64)pDecodedSamples[-11];
    }
    else
    {
        int j;
        prediction = 0;
        for (j = 0; j < (int)order; ++j) {
            prediction += coefficients[j] * (ma_int64)pDecodedSamples[-j-1];
        }
    }
#endif
#ifdef MA_64BIT
    prediction = 0;
    switch (order)
    {
    case 32: prediction += coefficients[31] * (ma_int64)pDecodedSamples[-32];
    case 31: prediction += coefficients[30] * (ma_int64)pDecodedSamples[-31];
    case 30: prediction += coefficients[29] * (ma_int64)pDecodedSamples[-30];
    case 29: prediction += coefficients[28] * (ma_int64)pDecodedSamples[-29];
    case 28: prediction += coefficients[27] * (ma_int64)pDecodedSamples[-28];
    case 27: prediction += coefficients[26] * (ma_int64)pDecodedSamples[-27];
    case 26: prediction += coefficients[25] * (ma_int64)pDecodedSamples[-26];
    case 25: prediction += coefficients[24] * (ma_int64)pDecodedSamples[-25];
    case 24: prediction += coefficients[23] * (ma_int64)pDecodedSamples[-24];
    case 23: prediction += coefficients[22] * (ma_int64)pDecodedSamples[-23];
    case 22: prediction += coefficients[21] * (ma_int64)pDecodedSamples[-22];
    case 21: prediction += coefficients[20] * (ma_int64)pDecodedSamples[-21];
    case 20: prediction += coefficients[19] * (ma_int64)pDecodedSamples[-20];
    case 19: prediction += coefficients[18] * (ma_int64)pDecodedSamples[-19];
    case 18: prediction += coefficients[17] * (ma_int64)pDecodedSamples[-18];
    case 17: prediction += coefficients[16] * (ma_int64)pDecodedSamples[-17];
    case 16: prediction += coefficients[15] * (ma_int64)pDecodedSamples[-16];
    case 15: prediction += coefficients[14] * (ma_int64)pDecodedSamples[-15];
    case 14: prediction += coefficients[13] * (ma_int64)pDecodedSamples[-14];
    case 13: prediction += coefficients[12] * (ma_int64)pDecodedSamples[-13];
    case 12: prediction += coefficients[11] * (ma_int64)pDecodedSamples[-12];
    case 11: prediction += coefficients[10] * (ma_int64)pDecodedSamples[-11];
    case 10: prediction += coefficients[ 9] * (ma_int64)pDecodedSamples[-10];
    case  9: prediction += coefficients[ 8] * (ma_int64)pDecodedSamples[- 9];
    case  8: prediction += coefficients[ 7] * (ma_int64)pDecodedSamples[- 8];
    case  7: prediction += coefficients[ 6] * (ma_int64)pDecodedSamples[- 7];
    case  6: prediction += coefficients[ 5] * (ma_int64)pDecodedSamples[- 6];
    case  5: prediction += coefficients[ 4] * (ma_int64)pDecodedSamples[- 5];
    case  4: prediction += coefficients[ 3] * (ma_int64)pDecodedSamples[- 4];
    case  3: prediction += coefficients[ 2] * (ma_int64)pDecodedSamples[- 3];
    case  2: prediction += coefficients[ 1] * (ma_int64)pDecodedSamples[- 2];
    case  1: prediction += coefficients[ 0] * (ma_int64)pDecodedSamples[- 1];
    }
#endif
    return (ma_int32)(prediction >> shift);
}
#if 0
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__reference(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 riceParam, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    ma_uint32 i;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pSamplesOut != NULL);
    for (i = 0; i < count; ++i) {
        ma_uint32 zeroCounter = 0;
        for (;;) {
            ma_uint8 bit;
            if (!ma_dr_flac__read_uint8(bs, 1, &bit)) {
                return MA_FALSE;
            }
            if (bit == 0) {
                zeroCounter += 1;
            } else {
                break;
            }
        }
        ma_uint32 decodedRice;
        if (riceParam > 0) {
            if (!ma_dr_flac__read_uint32(bs, riceParam, &decodedRice)) {
                return MA_FALSE;
            }
        } else {
            decodedRice = 0;
        }
        decodedRice |= (zeroCounter << riceParam);
        if ((decodedRice & 0x01)) {
            decodedRice = ~(decodedRice >> 1);
        } else {
            decodedRice =  (decodedRice >> 1);
        }
        if (ma_dr_flac__use_64_bit_prediction(bitsPerSample, lpcOrder, lpcPrecision)) {
            pSamplesOut[i] = decodedRice + ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + i);
        } else {
            pSamplesOut[i] = decodedRice + ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + i);
        }
    }
    return MA_TRUE;
}
#endif
#if 0
static ma_bool32 ma_dr_flac__read_rice_parts__reference(ma_dr_flac_bs* bs, ma_uint8 riceParam, ma_uint32* pZeroCounterOut, ma_uint32* pRiceParamPartOut)
{
    ma_uint32 zeroCounter = 0;
    ma_uint32 decodedRice;
    for (;;) {
        ma_uint8 bit;
        if (!ma_dr_flac__read_uint8(bs, 1, &bit)) {
            return MA_FALSE;
        }
        if (bit == 0) {
            zeroCounter += 1;
        } else {
            break;
        }
    }
    if (riceParam > 0) {
        if (!ma_dr_flac__read_uint32(bs, riceParam, &decodedRice)) {
            return MA_FALSE;
        }
    } else {
        decodedRice = 0;
    }
    *pZeroCounterOut = zeroCounter;
    *pRiceParamPartOut = decodedRice;
    return MA_TRUE;
}
#endif
#if 0
static MA_INLINE ma_bool32 ma_dr_flac__read_rice_parts(ma_dr_flac_bs* bs, ma_uint8 riceParam, ma_uint32* pZeroCounterOut, ma_uint32* pRiceParamPartOut)
{
    ma_dr_flac_cache_t riceParamMask;
    ma_uint32 zeroCounter;
    ma_uint32 setBitOffsetPlus1;
    ma_uint32 riceParamPart;
    ma_uint32 riceLength;
    MA_DR_FLAC_ASSERT(riceParam > 0);
    riceParamMask = MA_DR_FLAC_CACHE_L1_SELECTION_MASK(riceParam);
    zeroCounter = 0;
    while (bs->cache == 0) {
        zeroCounter += (ma_uint32)MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs);
        if (!ma_dr_flac__reload_cache(bs)) {
            return MA_FALSE;
        }
    }
    setBitOffsetPlus1 = ma_dr_flac__clz(bs->cache);
    zeroCounter += setBitOffsetPlus1;
    setBitOffsetPlus1 += 1;
    riceLength = setBitOffsetPlus1 + riceParam;
    if (riceLength < MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
        riceParamPart = (ma_uint32)((bs->cache & (riceParamMask >> setBitOffsetPlus1)) >> MA_DR_FLAC_CACHE_L1_SELECTION_SHIFT(bs, riceLength));
        bs->consumedBits += riceLength;
        bs->cache <<= riceLength;
    } else {
        ma_uint32 bitCountLo;
        ma_dr_flac_cache_t resultHi;
        bs->consumedBits += riceLength;
        bs->cache <<= setBitOffsetPlus1 & (MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs)-1);
        bitCountLo = bs->consumedBits - MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs);
        resultHi = MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT(bs, riceParam);
        if (bs->nextL2Line < MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)) {
#ifndef MA_DR_FLAC_NO_CRC
            ma_dr_flac__update_crc16(bs);
#endif
            bs->cache = ma_dr_flac__be2host__cache_line(bs->cacheL2[bs->nextL2Line++]);
            bs->consumedBits = 0;
#ifndef MA_DR_FLAC_NO_CRC
            bs->crc16Cache = bs->cache;
#endif
        } else {
            if (!ma_dr_flac__reload_cache(bs)) {
                return MA_FALSE;
            }
            if (bitCountLo > MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
                return MA_FALSE;
            }
        }
        riceParamPart = (ma_uint32)(resultHi | MA_DR_FLAC_CACHE_L1_SELECT_AND_SHIFT_SAFE(bs, bitCountLo));
        bs->consumedBits += bitCountLo;
        bs->cache <<= bitCountLo;
    }
    pZeroCounterOut[0] = zeroCounter;
    pRiceParamPartOut[0] = riceParamPart;
    return MA_TRUE;
}
#endif
static MA_INLINE ma_bool32 ma_dr_flac__read_rice_parts_x1(ma_dr_flac_bs* bs, ma_uint8 riceParam, ma_uint32* pZeroCounterOut, ma_uint32* pRiceParamPartOut)
{
    ma_uint32  riceParamPlus1 = riceParam + 1;
    ma_uint32  riceParamPlus1Shift = MA_DR_FLAC_CACHE_L1_SELECTION_SHIFT(bs, riceParamPlus1);
    ma_uint32  riceParamPlus1MaxConsumedBits = MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs) - riceParamPlus1;
    ma_dr_flac_cache_t bs_cache = bs->cache;
    ma_uint32  bs_consumedBits = bs->consumedBits;
    ma_uint32  lzcount = ma_dr_flac__clz(bs_cache);
    if (lzcount < sizeof(bs_cache)*8) {
        pZeroCounterOut[0] = lzcount;
    extract_rice_param_part:
        bs_cache       <<= lzcount;
        bs_consumedBits += lzcount;
        if (bs_consumedBits <= riceParamPlus1MaxConsumedBits) {
            pRiceParamPartOut[0] = (ma_uint32)(bs_cache >> riceParamPlus1Shift);
            bs_cache       <<= riceParamPlus1;
            bs_consumedBits += riceParamPlus1;
        } else {
            ma_uint32 riceParamPartHi;
            ma_uint32 riceParamPartLo;
            ma_uint32 riceParamPartLoBitCount;
            riceParamPartHi = (ma_uint32)(bs_cache >> riceParamPlus1Shift);
            riceParamPartLoBitCount = bs_consumedBits - riceParamPlus1MaxConsumedBits;
            MA_DR_FLAC_ASSERT(riceParamPartLoBitCount > 0 && riceParamPartLoBitCount < 32);
            if (bs->nextL2Line < MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)) {
            #ifndef MA_DR_FLAC_NO_CRC
                ma_dr_flac__update_crc16(bs);
            #endif
                bs_cache = ma_dr_flac__be2host__cache_line(bs->cacheL2[bs->nextL2Line++]);
                bs_consumedBits = riceParamPartLoBitCount;
            #ifndef MA_DR_FLAC_NO_CRC
                bs->crc16Cache = bs_cache;
            #endif
            } else {
                if (!ma_dr_flac__reload_cache(bs)) {
                    return MA_FALSE;
                }
                if (riceParamPartLoBitCount > MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
                    return MA_FALSE;
                }
                bs_cache = bs->cache;
                bs_consumedBits = bs->consumedBits + riceParamPartLoBitCount;
            }
            riceParamPartLo = (ma_uint32)(bs_cache >> (MA_DR_FLAC_CACHE_L1_SELECTION_SHIFT(bs, riceParamPartLoBitCount)));
            pRiceParamPartOut[0] = riceParamPartHi | riceParamPartLo;
            bs_cache <<= riceParamPartLoBitCount;
        }
    } else {
        ma_uint32 zeroCounter = (ma_uint32)(MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs) - bs_consumedBits);
        for (;;) {
            if (bs->nextL2Line < MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)) {
            #ifndef MA_DR_FLAC_NO_CRC
                ma_dr_flac__update_crc16(bs);
            #endif
                bs_cache = ma_dr_flac__be2host__cache_line(bs->cacheL2[bs->nextL2Line++]);
                bs_consumedBits = 0;
            #ifndef MA_DR_FLAC_NO_CRC
                bs->crc16Cache = bs_cache;
            #endif
            } else {
                if (!ma_dr_flac__reload_cache(bs)) {
                    return MA_FALSE;
                }
                bs_cache = bs->cache;
                bs_consumedBits = bs->consumedBits;
            }
            lzcount = ma_dr_flac__clz(bs_cache);
            zeroCounter += lzcount;
            if (lzcount < sizeof(bs_cache)*8) {
                break;
            }
        }
        pZeroCounterOut[0] = zeroCounter;
        goto extract_rice_param_part;
    }
    bs->cache = bs_cache;
    bs->consumedBits = bs_consumedBits;
    return MA_TRUE;
}
static MA_INLINE ma_bool32 ma_dr_flac__seek_rice_parts(ma_dr_flac_bs* bs, ma_uint8 riceParam)
{
    ma_uint32  riceParamPlus1 = riceParam + 1;
    ma_uint32  riceParamPlus1MaxConsumedBits = MA_DR_FLAC_CACHE_L1_SIZE_BITS(bs) - riceParamPlus1;
    ma_dr_flac_cache_t bs_cache = bs->cache;
    ma_uint32  bs_consumedBits = bs->consumedBits;
    ma_uint32  lzcount = ma_dr_flac__clz(bs_cache);
    if (lzcount < sizeof(bs_cache)*8) {
    extract_rice_param_part:
        bs_cache       <<= lzcount;
        bs_consumedBits += lzcount;
        if (bs_consumedBits <= riceParamPlus1MaxConsumedBits) {
            bs_cache       <<= riceParamPlus1;
            bs_consumedBits += riceParamPlus1;
        } else {
            ma_uint32 riceParamPartLoBitCount = bs_consumedBits - riceParamPlus1MaxConsumedBits;
            MA_DR_FLAC_ASSERT(riceParamPartLoBitCount > 0 && riceParamPartLoBitCount < 32);
            if (bs->nextL2Line < MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)) {
            #ifndef MA_DR_FLAC_NO_CRC
                ma_dr_flac__update_crc16(bs);
            #endif
                bs_cache = ma_dr_flac__be2host__cache_line(bs->cacheL2[bs->nextL2Line++]);
                bs_consumedBits = riceParamPartLoBitCount;
            #ifndef MA_DR_FLAC_NO_CRC
                bs->crc16Cache = bs_cache;
            #endif
            } else {
                if (!ma_dr_flac__reload_cache(bs)) {
                    return MA_FALSE;
                }
                if (riceParamPartLoBitCount > MA_DR_FLAC_CACHE_L1_BITS_REMAINING(bs)) {
                    return MA_FALSE;
                }
                bs_cache = bs->cache;
                bs_consumedBits = bs->consumedBits + riceParamPartLoBitCount;
            }
            bs_cache <<= riceParamPartLoBitCount;
        }
    } else {
        for (;;) {
            if (bs->nextL2Line < MA_DR_FLAC_CACHE_L2_LINE_COUNT(bs)) {
            #ifndef MA_DR_FLAC_NO_CRC
                ma_dr_flac__update_crc16(bs);
            #endif
                bs_cache = ma_dr_flac__be2host__cache_line(bs->cacheL2[bs->nextL2Line++]);
                bs_consumedBits = 0;
            #ifndef MA_DR_FLAC_NO_CRC
                bs->crc16Cache = bs_cache;
            #endif
            } else {
                if (!ma_dr_flac__reload_cache(bs)) {
                    return MA_FALSE;
                }
                bs_cache = bs->cache;
                bs_consumedBits = bs->consumedBits;
            }
            lzcount = ma_dr_flac__clz(bs_cache);
            if (lzcount < sizeof(bs_cache)*8) {
                break;
            }
        }
        goto extract_rice_param_part;
    }
    bs->cache = bs_cache;
    bs->consumedBits = bs_consumedBits;
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__scalar_zeroorder(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 riceParam, ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    ma_uint32 t[2] = {0x00000000, 0xFFFFFFFF};
    ma_uint32 zeroCountPart0;
    ma_uint32 riceParamPart0;
    ma_uint32 riceParamMask;
    ma_uint32 i;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pSamplesOut != NULL);
    (void)bitsPerSample;
    (void)order;
    (void)shift;
    (void)coefficients;
    riceParamMask  = (ma_uint32)~((~0UL) << riceParam);
    i = 0;
    while (i < count) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart0, &riceParamPart0)) {
            return MA_FALSE;
        }
        riceParamPart0 &= riceParamMask;
        riceParamPart0 |= (zeroCountPart0 << riceParam);
        riceParamPart0  = (riceParamPart0 >> 1) ^ t[riceParamPart0 & 0x01];
        pSamplesOut[i] = riceParamPart0;
        i += 1;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__scalar(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 riceParam, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    ma_uint32 t[2] = {0x00000000, 0xFFFFFFFF};
    ma_uint32 zeroCountPart0 = 0;
    ma_uint32 zeroCountPart1 = 0;
    ma_uint32 zeroCountPart2 = 0;
    ma_uint32 zeroCountPart3 = 0;
    ma_uint32 riceParamPart0 = 0;
    ma_uint32 riceParamPart1 = 0;
    ma_uint32 riceParamPart2 = 0;
    ma_uint32 riceParamPart3 = 0;
    ma_uint32 riceParamMask;
    const ma_int32* pSamplesOutEnd;
    ma_uint32 i;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pSamplesOut != NULL);
    if (lpcOrder == 0) {
        return ma_dr_flac__decode_samples_with_residual__rice__scalar_zeroorder(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, coefficients, pSamplesOut);
    }
    riceParamMask  = (ma_uint32)~((~0UL) << riceParam);
    pSamplesOutEnd = pSamplesOut + (count & ~3);
    if (ma_dr_flac__use_64_bit_prediction(bitsPerSample, lpcOrder, lpcPrecision)) {
        while (pSamplesOut < pSamplesOutEnd) {
            if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart0, &riceParamPart0) ||
                !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart1, &riceParamPart1) ||
                !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart2, &riceParamPart2) ||
                !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart3, &riceParamPart3)) {
                return MA_FALSE;
            }
            riceParamPart0 &= riceParamMask;
            riceParamPart1 &= riceParamMask;
            riceParamPart2 &= riceParamMask;
            riceParamPart3 &= riceParamMask;
            riceParamPart0 |= (zeroCountPart0 << riceParam);
            riceParamPart1 |= (zeroCountPart1 << riceParam);
            riceParamPart2 |= (zeroCountPart2 << riceParam);
            riceParamPart3 |= (zeroCountPart3 << riceParam);
            riceParamPart0  = (riceParamPart0 >> 1) ^ t[riceParamPart0 & 0x01];
            riceParamPart1  = (riceParamPart1 >> 1) ^ t[riceParamPart1 & 0x01];
            riceParamPart2  = (riceParamPart2 >> 1) ^ t[riceParamPart2 & 0x01];
            riceParamPart3  = (riceParamPart3 >> 1) ^ t[riceParamPart3 & 0x01];
            pSamplesOut[0] = riceParamPart0 + ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + 0);
            pSamplesOut[1] = riceParamPart1 + ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + 1);
            pSamplesOut[2] = riceParamPart2 + ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + 2);
            pSamplesOut[3] = riceParamPart3 + ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + 3);
            pSamplesOut += 4;
        }
    } else {
        while (pSamplesOut < pSamplesOutEnd) {
            if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart0, &riceParamPart0) ||
                !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart1, &riceParamPart1) ||
                !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart2, &riceParamPart2) ||
                !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart3, &riceParamPart3)) {
                return MA_FALSE;
            }
            riceParamPart0 &= riceParamMask;
            riceParamPart1 &= riceParamMask;
            riceParamPart2 &= riceParamMask;
            riceParamPart3 &= riceParamMask;
            riceParamPart0 |= (zeroCountPart0 << riceParam);
            riceParamPart1 |= (zeroCountPart1 << riceParam);
            riceParamPart2 |= (zeroCountPart2 << riceParam);
            riceParamPart3 |= (zeroCountPart3 << riceParam);
            riceParamPart0  = (riceParamPart0 >> 1) ^ t[riceParamPart0 & 0x01];
            riceParamPart1  = (riceParamPart1 >> 1) ^ t[riceParamPart1 & 0x01];
            riceParamPart2  = (riceParamPart2 >> 1) ^ t[riceParamPart2 & 0x01];
            riceParamPart3  = (riceParamPart3 >> 1) ^ t[riceParamPart3 & 0x01];
            pSamplesOut[0] = riceParamPart0 + ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + 0);
            pSamplesOut[1] = riceParamPart1 + ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + 1);
            pSamplesOut[2] = riceParamPart2 + ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + 2);
            pSamplesOut[3] = riceParamPart3 + ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + 3);
            pSamplesOut += 4;
        }
    }
    i = (count & ~3);
    while (i < count) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountPart0, &riceParamPart0)) {
            return MA_FALSE;
        }
        riceParamPart0 &= riceParamMask;
        riceParamPart0 |= (zeroCountPart0 << riceParam);
        riceParamPart0  = (riceParamPart0 >> 1) ^ t[riceParamPart0 & 0x01];
        if (ma_dr_flac__use_64_bit_prediction(bitsPerSample, lpcOrder, lpcPrecision)) {
            pSamplesOut[0] = riceParamPart0 + ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + 0);
        } else {
            pSamplesOut[0] = riceParamPart0 + ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + 0);
        }
        i += 1;
        pSamplesOut += 1;
    }
    return MA_TRUE;
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE __m128i ma_dr_flac__mm_packs_interleaved_epi32(__m128i a, __m128i b)
{
    __m128i r;
    r = _mm_packs_epi32(a, b);
    r = _mm_shuffle_epi32(r, _MM_SHUFFLE(3, 1, 2, 0));
    r = _mm_shufflehi_epi16(r, _MM_SHUFFLE(3, 1, 2, 0));
    r = _mm_shufflelo_epi16(r, _MM_SHUFFLE(3, 1, 2, 0));
    return r;
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_SSE41)
static MA_INLINE __m128i ma_dr_flac__mm_not_si128(__m128i a)
{
    return _mm_xor_si128(a, _mm_cmpeq_epi32(_mm_setzero_si128(), _mm_setzero_si128()));
}
static MA_INLINE __m128i ma_dr_flac__mm_hadd_epi32(__m128i x)
{
    __m128i x64 = _mm_add_epi32(x, _mm_shuffle_epi32(x, _MM_SHUFFLE(1, 0, 3, 2)));
    __m128i x32 = _mm_shufflelo_epi16(x64, _MM_SHUFFLE(1, 0, 3, 2));
    return _mm_add_epi32(x64, x32);
}
static MA_INLINE __m128i ma_dr_flac__mm_hadd_epi64(__m128i x)
{
    return _mm_add_epi64(x, _mm_shuffle_epi32(x, _MM_SHUFFLE(1, 0, 3, 2)));
}
static MA_INLINE __m128i ma_dr_flac__mm_srai_epi64(__m128i x, int count)
{
    __m128i lo = _mm_srli_epi64(x, count);
    __m128i hi = _mm_srai_epi32(x, count);
    hi = _mm_and_si128(hi, _mm_set_epi32(0xFFFFFFFF, 0, 0xFFFFFFFF, 0));
    return _mm_or_si128(lo, hi);
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__sse41_32(ma_dr_flac_bs* bs, ma_uint32 count, ma_uint8 riceParam, ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    int i;
    ma_uint32 riceParamMask;
    ma_int32* pDecodedSamples    = pSamplesOut;
    ma_int32* pDecodedSamplesEnd = pSamplesOut + (count & ~3);
    ma_uint32 zeroCountParts0 = 0;
    ma_uint32 zeroCountParts1 = 0;
    ma_uint32 zeroCountParts2 = 0;
    ma_uint32 zeroCountParts3 = 0;
    ma_uint32 riceParamParts0 = 0;
    ma_uint32 riceParamParts1 = 0;
    ma_uint32 riceParamParts2 = 0;
    ma_uint32 riceParamParts3 = 0;
    __m128i coefficients128_0;
    __m128i coefficients128_4;
    __m128i coefficients128_8;
    __m128i samples128_0;
    __m128i samples128_4;
    __m128i samples128_8;
    __m128i riceParamMask128;
    const ma_uint32 t[2] = {0x00000000, 0xFFFFFFFF};
    riceParamMask    = (ma_uint32)~((~0UL) << riceParam);
    riceParamMask128 = _mm_set1_epi32(riceParamMask);
    coefficients128_0 = _mm_setzero_si128();
    coefficients128_4 = _mm_setzero_si128();
    coefficients128_8 = _mm_setzero_si128();
    samples128_0 = _mm_setzero_si128();
    samples128_4 = _mm_setzero_si128();
    samples128_8 = _mm_setzero_si128();
#if 1
    {
        int runningOrder = order;
        if (runningOrder >= 4) {
            coefficients128_0 = _mm_loadu_si128((const __m128i*)(coefficients + 0));
            samples128_0      = _mm_loadu_si128((const __m128i*)(pSamplesOut  - 4));
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: coefficients128_0 = _mm_set_epi32(0, coefficients[2], coefficients[1], coefficients[0]); samples128_0 = _mm_set_epi32(pSamplesOut[-1], pSamplesOut[-2], pSamplesOut[-3], 0); break;
                case 2: coefficients128_0 = _mm_set_epi32(0, 0,               coefficients[1], coefficients[0]); samples128_0 = _mm_set_epi32(pSamplesOut[-1], pSamplesOut[-2], 0,               0); break;
                case 1: coefficients128_0 = _mm_set_epi32(0, 0,               0,               coefficients[0]); samples128_0 = _mm_set_epi32(pSamplesOut[-1], 0,               0,               0); break;
            }
            runningOrder = 0;
        }
        if (runningOrder >= 4) {
            coefficients128_4 = _mm_loadu_si128((const __m128i*)(coefficients + 4));
            samples128_4      = _mm_loadu_si128((const __m128i*)(pSamplesOut  - 8));
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: coefficients128_4 = _mm_set_epi32(0, coefficients[6], coefficients[5], coefficients[4]); samples128_4 = _mm_set_epi32(pSamplesOut[-5], pSamplesOut[-6], pSamplesOut[-7], 0); break;
                case 2: coefficients128_4 = _mm_set_epi32(0, 0,               coefficients[5], coefficients[4]); samples128_4 = _mm_set_epi32(pSamplesOut[-5], pSamplesOut[-6], 0,               0); break;
                case 1: coefficients128_4 = _mm_set_epi32(0, 0,               0,               coefficients[4]); samples128_4 = _mm_set_epi32(pSamplesOut[-5], 0,               0,               0); break;
            }
            runningOrder = 0;
        }
        if (runningOrder == 4) {
            coefficients128_8 = _mm_loadu_si128((const __m128i*)(coefficients + 8));
            samples128_8      = _mm_loadu_si128((const __m128i*)(pSamplesOut  - 12));
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: coefficients128_8 = _mm_set_epi32(0, coefficients[10], coefficients[9], coefficients[8]); samples128_8 = _mm_set_epi32(pSamplesOut[-9], pSamplesOut[-10], pSamplesOut[-11], 0); break;
                case 2: coefficients128_8 = _mm_set_epi32(0, 0,                coefficients[9], coefficients[8]); samples128_8 = _mm_set_epi32(pSamplesOut[-9], pSamplesOut[-10], 0,                0); break;
                case 1: coefficients128_8 = _mm_set_epi32(0, 0,                0,               coefficients[8]); samples128_8 = _mm_set_epi32(pSamplesOut[-9], 0,                0,                0); break;
            }
            runningOrder = 0;
        }
        coefficients128_0 = _mm_shuffle_epi32(coefficients128_0, _MM_SHUFFLE(0, 1, 2, 3));
        coefficients128_4 = _mm_shuffle_epi32(coefficients128_4, _MM_SHUFFLE(0, 1, 2, 3));
        coefficients128_8 = _mm_shuffle_epi32(coefficients128_8, _MM_SHUFFLE(0, 1, 2, 3));
    }
#else
    switch (order)
    {
    case 12: ((ma_int32*)&coefficients128_8)[0] = coefficients[11]; ((ma_int32*)&samples128_8)[0] = pDecodedSamples[-12];
    case 11: ((ma_int32*)&coefficients128_8)[1] = coefficients[10]; ((ma_int32*)&samples128_8)[1] = pDecodedSamples[-11];
    case 10: ((ma_int32*)&coefficients128_8)[2] = coefficients[ 9]; ((ma_int32*)&samples128_8)[2] = pDecodedSamples[-10];
    case 9:  ((ma_int32*)&coefficients128_8)[3] = coefficients[ 8]; ((ma_int32*)&samples128_8)[3] = pDecodedSamples[- 9];
    case 8:  ((ma_int32*)&coefficients128_4)[0] = coefficients[ 7]; ((ma_int32*)&samples128_4)[0] = pDecodedSamples[- 8];
    case 7:  ((ma_int32*)&coefficients128_4)[1] = coefficients[ 6]; ((ma_int32*)&samples128_4)[1] = pDecodedSamples[- 7];
    case 6:  ((ma_int32*)&coefficients128_4)[2] = coefficients[ 5]; ((ma_int32*)&samples128_4)[2] = pDecodedSamples[- 6];
    case 5:  ((ma_int32*)&coefficients128_4)[3] = coefficients[ 4]; ((ma_int32*)&samples128_4)[3] = pDecodedSamples[- 5];
    case 4:  ((ma_int32*)&coefficients128_0)[0] = coefficients[ 3]; ((ma_int32*)&samples128_0)[0] = pDecodedSamples[- 4];
    case 3:  ((ma_int32*)&coefficients128_0)[1] = coefficients[ 2]; ((ma_int32*)&samples128_0)[1] = pDecodedSamples[- 3];
    case 2:  ((ma_int32*)&coefficients128_0)[2] = coefficients[ 1]; ((ma_int32*)&samples128_0)[2] = pDecodedSamples[- 2];
    case 1:  ((ma_int32*)&coefficients128_0)[3] = coefficients[ 0]; ((ma_int32*)&samples128_0)[3] = pDecodedSamples[- 1];
    }
#endif
    while (pDecodedSamples < pDecodedSamplesEnd) {
        __m128i prediction128;
        __m128i zeroCountPart128;
        __m128i riceParamPart128;
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts0, &riceParamParts0) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts1, &riceParamParts1) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts2, &riceParamParts2) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts3, &riceParamParts3)) {
            return MA_FALSE;
        }
        zeroCountPart128 = _mm_set_epi32(zeroCountParts3, zeroCountParts2, zeroCountParts1, zeroCountParts0);
        riceParamPart128 = _mm_set_epi32(riceParamParts3, riceParamParts2, riceParamParts1, riceParamParts0);
        riceParamPart128 = _mm_and_si128(riceParamPart128, riceParamMask128);
        riceParamPart128 = _mm_or_si128(riceParamPart128, _mm_slli_epi32(zeroCountPart128, riceParam));
        riceParamPart128 = _mm_xor_si128(_mm_srli_epi32(riceParamPart128, 1), _mm_add_epi32(ma_dr_flac__mm_not_si128(_mm_and_si128(riceParamPart128, _mm_set1_epi32(0x01))), _mm_set1_epi32(0x01)));
        if (order <= 4) {
            for (i = 0; i < 4; i += 1) {
                prediction128 = _mm_mullo_epi32(coefficients128_0, samples128_0);
                prediction128 = ma_dr_flac__mm_hadd_epi32(prediction128);
                prediction128 = _mm_srai_epi32(prediction128, shift);
                prediction128 = _mm_add_epi32(riceParamPart128, prediction128);
                samples128_0 = _mm_alignr_epi8(prediction128, samples128_0, 4);
                riceParamPart128 = _mm_alignr_epi8(_mm_setzero_si128(), riceParamPart128, 4);
            }
        } else if (order <= 8) {
            for (i = 0; i < 4; i += 1) {
                prediction128 =                              _mm_mullo_epi32(coefficients128_4, samples128_4);
                prediction128 = _mm_add_epi32(prediction128, _mm_mullo_epi32(coefficients128_0, samples128_0));
                prediction128 = ma_dr_flac__mm_hadd_epi32(prediction128);
                prediction128 = _mm_srai_epi32(prediction128, shift);
                prediction128 = _mm_add_epi32(riceParamPart128, prediction128);
                samples128_4 = _mm_alignr_epi8(samples128_0,  samples128_4, 4);
                samples128_0 = _mm_alignr_epi8(prediction128, samples128_0, 4);
                riceParamPart128 = _mm_alignr_epi8(_mm_setzero_si128(), riceParamPart128, 4);
            }
        } else {
            for (i = 0; i < 4; i += 1) {
                prediction128 =                              _mm_mullo_epi32(coefficients128_8, samples128_8);
                prediction128 = _mm_add_epi32(prediction128, _mm_mullo_epi32(coefficients128_4, samples128_4));
                prediction128 = _mm_add_epi32(prediction128, _mm_mullo_epi32(coefficients128_0, samples128_0));
                prediction128 = ma_dr_flac__mm_hadd_epi32(prediction128);
                prediction128 = _mm_srai_epi32(prediction128, shift);
                prediction128 = _mm_add_epi32(riceParamPart128, prediction128);
                samples128_8 = _mm_alignr_epi8(samples128_4,  samples128_8, 4);
                samples128_4 = _mm_alignr_epi8(samples128_0,  samples128_4, 4);
                samples128_0 = _mm_alignr_epi8(prediction128, samples128_0, 4);
                riceParamPart128 = _mm_alignr_epi8(_mm_setzero_si128(), riceParamPart128, 4);
            }
        }
        _mm_storeu_si128((__m128i*)pDecodedSamples, samples128_0);
        pDecodedSamples += 4;
    }
    i = (count & ~3);
    while (i < (int)count) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts0, &riceParamParts0)) {
            return MA_FALSE;
        }
        riceParamParts0 &= riceParamMask;
        riceParamParts0 |= (zeroCountParts0 << riceParam);
        riceParamParts0  = (riceParamParts0 >> 1) ^ t[riceParamParts0 & 0x01];
        pDecodedSamples[0] = riceParamParts0 + ma_dr_flac__calculate_prediction_32(order, shift, coefficients, pDecodedSamples);
        i += 1;
        pDecodedSamples += 1;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__sse41_64(ma_dr_flac_bs* bs, ma_uint32 count, ma_uint8 riceParam, ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    int i;
    ma_uint32 riceParamMask;
    ma_int32* pDecodedSamples    = pSamplesOut;
    ma_int32* pDecodedSamplesEnd = pSamplesOut + (count & ~3);
    ma_uint32 zeroCountParts0 = 0;
    ma_uint32 zeroCountParts1 = 0;
    ma_uint32 zeroCountParts2 = 0;
    ma_uint32 zeroCountParts3 = 0;
    ma_uint32 riceParamParts0 = 0;
    ma_uint32 riceParamParts1 = 0;
    ma_uint32 riceParamParts2 = 0;
    ma_uint32 riceParamParts3 = 0;
    __m128i coefficients128_0;
    __m128i coefficients128_4;
    __m128i coefficients128_8;
    __m128i samples128_0;
    __m128i samples128_4;
    __m128i samples128_8;
    __m128i prediction128;
    __m128i riceParamMask128;
    const ma_uint32 t[2] = {0x00000000, 0xFFFFFFFF};
    MA_DR_FLAC_ASSERT(order <= 12);
    riceParamMask    = (ma_uint32)~((~0UL) << riceParam);
    riceParamMask128 = _mm_set1_epi32(riceParamMask);
    prediction128 = _mm_setzero_si128();
    coefficients128_0  = _mm_setzero_si128();
    coefficients128_4  = _mm_setzero_si128();
    coefficients128_8  = _mm_setzero_si128();
    samples128_0  = _mm_setzero_si128();
    samples128_4  = _mm_setzero_si128();
    samples128_8  = _mm_setzero_si128();
#if 1
    {
        int runningOrder = order;
        if (runningOrder >= 4) {
            coefficients128_0 = _mm_loadu_si128((const __m128i*)(coefficients + 0));
            samples128_0      = _mm_loadu_si128((const __m128i*)(pSamplesOut  - 4));
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: coefficients128_0 = _mm_set_epi32(0, coefficients[2], coefficients[1], coefficients[0]); samples128_0 = _mm_set_epi32(pSamplesOut[-1], pSamplesOut[-2], pSamplesOut[-3], 0); break;
                case 2: coefficients128_0 = _mm_set_epi32(0, 0,               coefficients[1], coefficients[0]); samples128_0 = _mm_set_epi32(pSamplesOut[-1], pSamplesOut[-2], 0,               0); break;
                case 1: coefficients128_0 = _mm_set_epi32(0, 0,               0,               coefficients[0]); samples128_0 = _mm_set_epi32(pSamplesOut[-1], 0,               0,               0); break;
            }
            runningOrder = 0;
        }
        if (runningOrder >= 4) {
            coefficients128_4 = _mm_loadu_si128((const __m128i*)(coefficients + 4));
            samples128_4      = _mm_loadu_si128((const __m128i*)(pSamplesOut  - 8));
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: coefficients128_4 = _mm_set_epi32(0, coefficients[6], coefficients[5], coefficients[4]); samples128_4 = _mm_set_epi32(pSamplesOut[-5], pSamplesOut[-6], pSamplesOut[-7], 0); break;
                case 2: coefficients128_4 = _mm_set_epi32(0, 0,               coefficients[5], coefficients[4]); samples128_4 = _mm_set_epi32(pSamplesOut[-5], pSamplesOut[-6], 0,               0); break;
                case 1: coefficients128_4 = _mm_set_epi32(0, 0,               0,               coefficients[4]); samples128_4 = _mm_set_epi32(pSamplesOut[-5], 0,               0,               0); break;
            }
            runningOrder = 0;
        }
        if (runningOrder == 4) {
            coefficients128_8 = _mm_loadu_si128((const __m128i*)(coefficients + 8));
            samples128_8      = _mm_loadu_si128((const __m128i*)(pSamplesOut  - 12));
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: coefficients128_8 = _mm_set_epi32(0, coefficients[10], coefficients[9], coefficients[8]); samples128_8 = _mm_set_epi32(pSamplesOut[-9], pSamplesOut[-10], pSamplesOut[-11], 0); break;
                case 2: coefficients128_8 = _mm_set_epi32(0, 0,                coefficients[9], coefficients[8]); samples128_8 = _mm_set_epi32(pSamplesOut[-9], pSamplesOut[-10], 0,                0); break;
                case 1: coefficients128_8 = _mm_set_epi32(0, 0,                0,               coefficients[8]); samples128_8 = _mm_set_epi32(pSamplesOut[-9], 0,                0,                0); break;
            }
            runningOrder = 0;
        }
        coefficients128_0 = _mm_shuffle_epi32(coefficients128_0, _MM_SHUFFLE(0, 1, 2, 3));
        coefficients128_4 = _mm_shuffle_epi32(coefficients128_4, _MM_SHUFFLE(0, 1, 2, 3));
        coefficients128_8 = _mm_shuffle_epi32(coefficients128_8, _MM_SHUFFLE(0, 1, 2, 3));
    }
#else
    switch (order)
    {
    case 12: ((ma_int32*)&coefficients128_8)[0] = coefficients[11]; ((ma_int32*)&samples128_8)[0] = pDecodedSamples[-12];
    case 11: ((ma_int32*)&coefficients128_8)[1] = coefficients[10]; ((ma_int32*)&samples128_8)[1] = pDecodedSamples[-11];
    case 10: ((ma_int32*)&coefficients128_8)[2] = coefficients[ 9]; ((ma_int32*)&samples128_8)[2] = pDecodedSamples[-10];
    case 9:  ((ma_int32*)&coefficients128_8)[3] = coefficients[ 8]; ((ma_int32*)&samples128_8)[3] = pDecodedSamples[- 9];
    case 8:  ((ma_int32*)&coefficients128_4)[0] = coefficients[ 7]; ((ma_int32*)&samples128_4)[0] = pDecodedSamples[- 8];
    case 7:  ((ma_int32*)&coefficients128_4)[1] = coefficients[ 6]; ((ma_int32*)&samples128_4)[1] = pDecodedSamples[- 7];
    case 6:  ((ma_int32*)&coefficients128_4)[2] = coefficients[ 5]; ((ma_int32*)&samples128_4)[2] = pDecodedSamples[- 6];
    case 5:  ((ma_int32*)&coefficients128_4)[3] = coefficients[ 4]; ((ma_int32*)&samples128_4)[3] = pDecodedSamples[- 5];
    case 4:  ((ma_int32*)&coefficients128_0)[0] = coefficients[ 3]; ((ma_int32*)&samples128_0)[0] = pDecodedSamples[- 4];
    case 3:  ((ma_int32*)&coefficients128_0)[1] = coefficients[ 2]; ((ma_int32*)&samples128_0)[1] = pDecodedSamples[- 3];
    case 2:  ((ma_int32*)&coefficients128_0)[2] = coefficients[ 1]; ((ma_int32*)&samples128_0)[2] = pDecodedSamples[- 2];
    case 1:  ((ma_int32*)&coefficients128_0)[3] = coefficients[ 0]; ((ma_int32*)&samples128_0)[3] = pDecodedSamples[- 1];
    }
#endif
    while (pDecodedSamples < pDecodedSamplesEnd) {
        __m128i zeroCountPart128;
        __m128i riceParamPart128;
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts0, &riceParamParts0) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts1, &riceParamParts1) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts2, &riceParamParts2) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts3, &riceParamParts3)) {
            return MA_FALSE;
        }
        zeroCountPart128 = _mm_set_epi32(zeroCountParts3, zeroCountParts2, zeroCountParts1, zeroCountParts0);
        riceParamPart128 = _mm_set_epi32(riceParamParts3, riceParamParts2, riceParamParts1, riceParamParts0);
        riceParamPart128 = _mm_and_si128(riceParamPart128, riceParamMask128);
        riceParamPart128 = _mm_or_si128(riceParamPart128, _mm_slli_epi32(zeroCountPart128, riceParam));
        riceParamPart128 = _mm_xor_si128(_mm_srli_epi32(riceParamPart128, 1), _mm_add_epi32(ma_dr_flac__mm_not_si128(_mm_and_si128(riceParamPart128, _mm_set1_epi32(1))), _mm_set1_epi32(1)));
        for (i = 0; i < 4; i += 1) {
            prediction128 = _mm_xor_si128(prediction128, prediction128);
            switch (order)
            {
            case 12:
            case 11: prediction128 = _mm_add_epi64(prediction128, _mm_mul_epi32(_mm_shuffle_epi32(coefficients128_8, _MM_SHUFFLE(1, 1, 0, 0)), _mm_shuffle_epi32(samples128_8, _MM_SHUFFLE(1, 1, 0, 0))));
            case 10:
            case  9: prediction128 = _mm_add_epi64(prediction128, _mm_mul_epi32(_mm_shuffle_epi32(coefficients128_8, _MM_SHUFFLE(3, 3, 2, 2)), _mm_shuffle_epi32(samples128_8, _MM_SHUFFLE(3, 3, 2, 2))));
            case  8:
            case  7: prediction128 = _mm_add_epi64(prediction128, _mm_mul_epi32(_mm_shuffle_epi32(coefficients128_4, _MM_SHUFFLE(1, 1, 0, 0)), _mm_shuffle_epi32(samples128_4, _MM_SHUFFLE(1, 1, 0, 0))));
            case  6:
            case  5: prediction128 = _mm_add_epi64(prediction128, _mm_mul_epi32(_mm_shuffle_epi32(coefficients128_4, _MM_SHUFFLE(3, 3, 2, 2)), _mm_shuffle_epi32(samples128_4, _MM_SHUFFLE(3, 3, 2, 2))));
            case  4:
            case  3: prediction128 = _mm_add_epi64(prediction128, _mm_mul_epi32(_mm_shuffle_epi32(coefficients128_0, _MM_SHUFFLE(1, 1, 0, 0)), _mm_shuffle_epi32(samples128_0, _MM_SHUFFLE(1, 1, 0, 0))));
            case  2:
            case  1: prediction128 = _mm_add_epi64(prediction128, _mm_mul_epi32(_mm_shuffle_epi32(coefficients128_0, _MM_SHUFFLE(3, 3, 2, 2)), _mm_shuffle_epi32(samples128_0, _MM_SHUFFLE(3, 3, 2, 2))));
            }
            prediction128 = ma_dr_flac__mm_hadd_epi64(prediction128);
            prediction128 = ma_dr_flac__mm_srai_epi64(prediction128, shift);
            prediction128 = _mm_add_epi32(riceParamPart128, prediction128);
            samples128_8 = _mm_alignr_epi8(samples128_4,  samples128_8, 4);
            samples128_4 = _mm_alignr_epi8(samples128_0,  samples128_4, 4);
            samples128_0 = _mm_alignr_epi8(prediction128, samples128_0, 4);
            riceParamPart128 = _mm_alignr_epi8(_mm_setzero_si128(), riceParamPart128, 4);
        }
        _mm_storeu_si128((__m128i*)pDecodedSamples, samples128_0);
        pDecodedSamples += 4;
    }
    i = (count & ~3);
    while (i < (int)count) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts0, &riceParamParts0)) {
            return MA_FALSE;
        }
        riceParamParts0 &= riceParamMask;
        riceParamParts0 |= (zeroCountParts0 << riceParam);
        riceParamParts0  = (riceParamParts0 >> 1) ^ t[riceParamParts0 & 0x01];
        pDecodedSamples[0] = riceParamParts0 + ma_dr_flac__calculate_prediction_64(order, shift, coefficients, pDecodedSamples);
        i += 1;
        pDecodedSamples += 1;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__sse41(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 riceParam, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pSamplesOut != NULL);
    if (lpcOrder > 0 && lpcOrder <= 12) {
        if (ma_dr_flac__use_64_bit_prediction(bitsPerSample, lpcOrder, lpcPrecision)) {
            return ma_dr_flac__decode_samples_with_residual__rice__sse41_64(bs, count, riceParam, lpcOrder, lpcShift, coefficients, pSamplesOut);
        } else {
            return ma_dr_flac__decode_samples_with_residual__rice__sse41_32(bs, count, riceParam, lpcOrder, lpcShift, coefficients, pSamplesOut);
        }
    } else {
        return ma_dr_flac__decode_samples_with_residual__rice__scalar(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pSamplesOut);
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac__vst2q_s32(ma_int32* p, int32x4x2_t x)
{
    vst1q_s32(p+0, x.val[0]);
    vst1q_s32(p+4, x.val[1]);
}
static MA_INLINE void ma_dr_flac__vst2q_u32(ma_uint32* p, uint32x4x2_t x)
{
    vst1q_u32(p+0, x.val[0]);
    vst1q_u32(p+4, x.val[1]);
}
static MA_INLINE void ma_dr_flac__vst2q_f32(float* p, float32x4x2_t x)
{
    vst1q_f32(p+0, x.val[0]);
    vst1q_f32(p+4, x.val[1]);
}
static MA_INLINE void ma_dr_flac__vst2q_s16(ma_int16* p, int16x4x2_t x)
{
    vst1q_s16(p, vcombine_s16(x.val[0], x.val[1]));
}
static MA_INLINE void ma_dr_flac__vst2q_u16(ma_uint16* p, uint16x4x2_t x)
{
    vst1q_u16(p, vcombine_u16(x.val[0], x.val[1]));
}
static MA_INLINE int32x4_t ma_dr_flac__vdupq_n_s32x4(ma_int32 x3, ma_int32 x2, ma_int32 x1, ma_int32 x0)
{
    ma_int32 x[4];
    x[3] = x3;
    x[2] = x2;
    x[1] = x1;
    x[0] = x0;
    return vld1q_s32(x);
}
static MA_INLINE int32x4_t ma_dr_flac__valignrq_s32_1(int32x4_t a, int32x4_t b)
{
    return vextq_s32(b, a, 1);
}
static MA_INLINE uint32x4_t ma_dr_flac__valignrq_u32_1(uint32x4_t a, uint32x4_t b)
{
    return vextq_u32(b, a, 1);
}
static MA_INLINE int32x2_t ma_dr_flac__vhaddq_s32(int32x4_t x)
{
    int32x2_t r = vadd_s32(vget_high_s32(x), vget_low_s32(x));
    return vpadd_s32(r, r);
}
static MA_INLINE int64x1_t ma_dr_flac__vhaddq_s64(int64x2_t x)
{
    return vadd_s64(vget_high_s64(x), vget_low_s64(x));
}
static MA_INLINE int32x4_t ma_dr_flac__vrevq_s32(int32x4_t x)
{
    return vrev64q_s32(vcombine_s32(vget_high_s32(x), vget_low_s32(x)));
}
static MA_INLINE int32x4_t ma_dr_flac__vnotq_s32(int32x4_t x)
{
    return veorq_s32(x, vdupq_n_s32(0xFFFFFFFF));
}
static MA_INLINE uint32x4_t ma_dr_flac__vnotq_u32(uint32x4_t x)
{
    return veorq_u32(x, vdupq_n_u32(0xFFFFFFFF));
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__neon_32(ma_dr_flac_bs* bs, ma_uint32 count, ma_uint8 riceParam, ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    int i;
    ma_uint32 riceParamMask;
    ma_int32* pDecodedSamples    = pSamplesOut;
    ma_int32* pDecodedSamplesEnd = pSamplesOut + (count & ~3);
    ma_uint32 zeroCountParts[4];
    ma_uint32 riceParamParts[4];
    int32x4_t coefficients128_0;
    int32x4_t coefficients128_4;
    int32x4_t coefficients128_8;
    int32x4_t samples128_0;
    int32x4_t samples128_4;
    int32x4_t samples128_8;
    uint32x4_t riceParamMask128;
    int32x4_t riceParam128;
    int32x2_t shift64;
    uint32x4_t one128;
    const ma_uint32 t[2] = {0x00000000, 0xFFFFFFFF};
    riceParamMask    = (ma_uint32)~((~0UL) << riceParam);
    riceParamMask128 = vdupq_n_u32(riceParamMask);
    riceParam128 = vdupq_n_s32(riceParam);
    shift64 = vdup_n_s32(-shift);
    one128 = vdupq_n_u32(1);
    {
        int runningOrder = order;
        ma_int32 tempC[4] = {0, 0, 0, 0};
        ma_int32 tempS[4] = {0, 0, 0, 0};
        if (runningOrder >= 4) {
            coefficients128_0 = vld1q_s32(coefficients + 0);
            samples128_0      = vld1q_s32(pSamplesOut  - 4);
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: tempC[2] = coefficients[2]; tempS[1] = pSamplesOut[-3];
                case 2: tempC[1] = coefficients[1]; tempS[2] = pSamplesOut[-2];
                case 1: tempC[0] = coefficients[0]; tempS[3] = pSamplesOut[-1];
            }
            coefficients128_0 = vld1q_s32(tempC);
            samples128_0      = vld1q_s32(tempS);
            runningOrder = 0;
        }
        if (runningOrder >= 4) {
            coefficients128_4 = vld1q_s32(coefficients + 4);
            samples128_4      = vld1q_s32(pSamplesOut  - 8);
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: tempC[2] = coefficients[6]; tempS[1] = pSamplesOut[-7];
                case 2: tempC[1] = coefficients[5]; tempS[2] = pSamplesOut[-6];
                case 1: tempC[0] = coefficients[4]; tempS[3] = pSamplesOut[-5];
            }
            coefficients128_4 = vld1q_s32(tempC);
            samples128_4      = vld1q_s32(tempS);
            runningOrder = 0;
        }
        if (runningOrder == 4) {
            coefficients128_8 = vld1q_s32(coefficients + 8);
            samples128_8      = vld1q_s32(pSamplesOut  - 12);
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: tempC[2] = coefficients[10]; tempS[1] = pSamplesOut[-11];
                case 2: tempC[1] = coefficients[ 9]; tempS[2] = pSamplesOut[-10];
                case 1: tempC[0] = coefficients[ 8]; tempS[3] = pSamplesOut[- 9];
            }
            coefficients128_8 = vld1q_s32(tempC);
            samples128_8      = vld1q_s32(tempS);
            runningOrder = 0;
        }
        coefficients128_0 = ma_dr_flac__vrevq_s32(coefficients128_0);
        coefficients128_4 = ma_dr_flac__vrevq_s32(coefficients128_4);
        coefficients128_8 = ma_dr_flac__vrevq_s32(coefficients128_8);
    }
    while (pDecodedSamples < pDecodedSamplesEnd) {
        int32x4_t prediction128;
        int32x2_t prediction64;
        uint32x4_t zeroCountPart128;
        uint32x4_t riceParamPart128;
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[0], &riceParamParts[0]) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[1], &riceParamParts[1]) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[2], &riceParamParts[2]) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[3], &riceParamParts[3])) {
            return MA_FALSE;
        }
        zeroCountPart128 = vld1q_u32(zeroCountParts);
        riceParamPart128 = vld1q_u32(riceParamParts);
        riceParamPart128 = vandq_u32(riceParamPart128, riceParamMask128);
        riceParamPart128 = vorrq_u32(riceParamPart128, vshlq_u32(zeroCountPart128, riceParam128));
        riceParamPart128 = veorq_u32(vshrq_n_u32(riceParamPart128, 1), vaddq_u32(ma_dr_flac__vnotq_u32(vandq_u32(riceParamPart128, one128)), one128));
        if (order <= 4) {
            for (i = 0; i < 4; i += 1) {
                prediction128 = vmulq_s32(coefficients128_0, samples128_0);
                prediction64 = ma_dr_flac__vhaddq_s32(prediction128);
                prediction64 = vshl_s32(prediction64, shift64);
                prediction64 = vadd_s32(prediction64, vget_low_s32(vreinterpretq_s32_u32(riceParamPart128)));
                samples128_0 = ma_dr_flac__valignrq_s32_1(vcombine_s32(prediction64, vdup_n_s32(0)), samples128_0);
                riceParamPart128 = ma_dr_flac__valignrq_u32_1(vdupq_n_u32(0), riceParamPart128);
            }
        } else if (order <= 8) {
            for (i = 0; i < 4; i += 1) {
                prediction128 =                vmulq_s32(coefficients128_4, samples128_4);
                prediction128 = vmlaq_s32(prediction128, coefficients128_0, samples128_0);
                prediction64 = ma_dr_flac__vhaddq_s32(prediction128);
                prediction64 = vshl_s32(prediction64, shift64);
                prediction64 = vadd_s32(prediction64, vget_low_s32(vreinterpretq_s32_u32(riceParamPart128)));
                samples128_4 = ma_dr_flac__valignrq_s32_1(samples128_0, samples128_4);
                samples128_0 = ma_dr_flac__valignrq_s32_1(vcombine_s32(prediction64, vdup_n_s32(0)), samples128_0);
                riceParamPart128 = ma_dr_flac__valignrq_u32_1(vdupq_n_u32(0), riceParamPart128);
            }
        } else {
            for (i = 0; i < 4; i += 1) {
                prediction128 =                vmulq_s32(coefficients128_8, samples128_8);
                prediction128 = vmlaq_s32(prediction128, coefficients128_4, samples128_4);
                prediction128 = vmlaq_s32(prediction128, coefficients128_0, samples128_0);
                prediction64 = ma_dr_flac__vhaddq_s32(prediction128);
                prediction64 = vshl_s32(prediction64, shift64);
                prediction64 = vadd_s32(prediction64, vget_low_s32(vreinterpretq_s32_u32(riceParamPart128)));
                samples128_8 = ma_dr_flac__valignrq_s32_1(samples128_4, samples128_8);
                samples128_4 = ma_dr_flac__valignrq_s32_1(samples128_0, samples128_4);
                samples128_0 = ma_dr_flac__valignrq_s32_1(vcombine_s32(prediction64, vdup_n_s32(0)), samples128_0);
                riceParamPart128 = ma_dr_flac__valignrq_u32_1(vdupq_n_u32(0), riceParamPart128);
            }
        }
        vst1q_s32(pDecodedSamples, samples128_0);
        pDecodedSamples += 4;
    }
    i = (count & ~3);
    while (i < (int)count) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[0], &riceParamParts[0])) {
            return MA_FALSE;
        }
        riceParamParts[0] &= riceParamMask;
        riceParamParts[0] |= (zeroCountParts[0] << riceParam);
        riceParamParts[0]  = (riceParamParts[0] >> 1) ^ t[riceParamParts[0] & 0x01];
        pDecodedSamples[0] = riceParamParts[0] + ma_dr_flac__calculate_prediction_32(order, shift, coefficients, pDecodedSamples);
        i += 1;
        pDecodedSamples += 1;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__neon_64(ma_dr_flac_bs* bs, ma_uint32 count, ma_uint8 riceParam, ma_uint32 order, ma_int32 shift, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    int i;
    ma_uint32 riceParamMask;
    ma_int32* pDecodedSamples    = pSamplesOut;
    ma_int32* pDecodedSamplesEnd = pSamplesOut + (count & ~3);
    ma_uint32 zeroCountParts[4];
    ma_uint32 riceParamParts[4];
    int32x4_t coefficients128_0;
    int32x4_t coefficients128_4;
    int32x4_t coefficients128_8;
    int32x4_t samples128_0;
    int32x4_t samples128_4;
    int32x4_t samples128_8;
    uint32x4_t riceParamMask128;
    int32x4_t riceParam128;
    int64x1_t shift64;
    uint32x4_t one128;
    int64x2_t prediction128 = { 0 };
    uint32x4_t zeroCountPart128;
    uint32x4_t riceParamPart128;
    const ma_uint32 t[2] = {0x00000000, 0xFFFFFFFF};
    riceParamMask    = (ma_uint32)~((~0UL) << riceParam);
    riceParamMask128 = vdupq_n_u32(riceParamMask);
    riceParam128 = vdupq_n_s32(riceParam);
    shift64 = vdup_n_s64(-shift);
    one128 = vdupq_n_u32(1);
    {
        int runningOrder = order;
        ma_int32 tempC[4] = {0, 0, 0, 0};
        ma_int32 tempS[4] = {0, 0, 0, 0};
        if (runningOrder >= 4) {
            coefficients128_0 = vld1q_s32(coefficients + 0);
            samples128_0      = vld1q_s32(pSamplesOut  - 4);
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: tempC[2] = coefficients[2]; tempS[1] = pSamplesOut[-3];
                case 2: tempC[1] = coefficients[1]; tempS[2] = pSamplesOut[-2];
                case 1: tempC[0] = coefficients[0]; tempS[3] = pSamplesOut[-1];
            }
            coefficients128_0 = vld1q_s32(tempC);
            samples128_0      = vld1q_s32(tempS);
            runningOrder = 0;
        }
        if (runningOrder >= 4) {
            coefficients128_4 = vld1q_s32(coefficients + 4);
            samples128_4      = vld1q_s32(pSamplesOut  - 8);
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: tempC[2] = coefficients[6]; tempS[1] = pSamplesOut[-7];
                case 2: tempC[1] = coefficients[5]; tempS[2] = pSamplesOut[-6];
                case 1: tempC[0] = coefficients[4]; tempS[3] = pSamplesOut[-5];
            }
            coefficients128_4 = vld1q_s32(tempC);
            samples128_4      = vld1q_s32(tempS);
            runningOrder = 0;
        }
        if (runningOrder == 4) {
            coefficients128_8 = vld1q_s32(coefficients + 8);
            samples128_8      = vld1q_s32(pSamplesOut  - 12);
            runningOrder -= 4;
        } else {
            switch (runningOrder) {
                case 3: tempC[2] = coefficients[10]; tempS[1] = pSamplesOut[-11];
                case 2: tempC[1] = coefficients[ 9]; tempS[2] = pSamplesOut[-10];
                case 1: tempC[0] = coefficients[ 8]; tempS[3] = pSamplesOut[- 9];
            }
            coefficients128_8 = vld1q_s32(tempC);
            samples128_8      = vld1q_s32(tempS);
            runningOrder = 0;
        }
        coefficients128_0 = ma_dr_flac__vrevq_s32(coefficients128_0);
        coefficients128_4 = ma_dr_flac__vrevq_s32(coefficients128_4);
        coefficients128_8 = ma_dr_flac__vrevq_s32(coefficients128_8);
    }
    while (pDecodedSamples < pDecodedSamplesEnd) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[0], &riceParamParts[0]) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[1], &riceParamParts[1]) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[2], &riceParamParts[2]) ||
            !ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[3], &riceParamParts[3])) {
            return MA_FALSE;
        }
        zeroCountPart128 = vld1q_u32(zeroCountParts);
        riceParamPart128 = vld1q_u32(riceParamParts);
        riceParamPart128 = vandq_u32(riceParamPart128, riceParamMask128);
        riceParamPart128 = vorrq_u32(riceParamPart128, vshlq_u32(zeroCountPart128, riceParam128));
        riceParamPart128 = veorq_u32(vshrq_n_u32(riceParamPart128, 1), vaddq_u32(ma_dr_flac__vnotq_u32(vandq_u32(riceParamPart128, one128)), one128));
        for (i = 0; i < 4; i += 1) {
            int64x1_t prediction64;
            prediction128 = veorq_s64(prediction128, prediction128);
            switch (order)
            {
            case 12:
            case 11: prediction128 = vaddq_s64(prediction128, vmull_s32(vget_low_s32(coefficients128_8), vget_low_s32(samples128_8)));
            case 10:
            case  9: prediction128 = vaddq_s64(prediction128, vmull_s32(vget_high_s32(coefficients128_8), vget_high_s32(samples128_8)));
            case  8:
            case  7: prediction128 = vaddq_s64(prediction128, vmull_s32(vget_low_s32(coefficients128_4), vget_low_s32(samples128_4)));
            case  6:
            case  5: prediction128 = vaddq_s64(prediction128, vmull_s32(vget_high_s32(coefficients128_4), vget_high_s32(samples128_4)));
            case  4:
            case  3: prediction128 = vaddq_s64(prediction128, vmull_s32(vget_low_s32(coefficients128_0), vget_low_s32(samples128_0)));
            case  2:
            case  1: prediction128 = vaddq_s64(prediction128, vmull_s32(vget_high_s32(coefficients128_0), vget_high_s32(samples128_0)));
            }
            prediction64 = ma_dr_flac__vhaddq_s64(prediction128);
            prediction64 = vshl_s64(prediction64, shift64);
            prediction64 = vadd_s64(prediction64, vdup_n_s64(vgetq_lane_u32(riceParamPart128, 0)));
            samples128_8 = ma_dr_flac__valignrq_s32_1(samples128_4, samples128_8);
            samples128_4 = ma_dr_flac__valignrq_s32_1(samples128_0, samples128_4);
            samples128_0 = ma_dr_flac__valignrq_s32_1(vcombine_s32(vreinterpret_s32_s64(prediction64), vdup_n_s32(0)), samples128_0);
            riceParamPart128 = ma_dr_flac__valignrq_u32_1(vdupq_n_u32(0), riceParamPart128);
        }
        vst1q_s32(pDecodedSamples, samples128_0);
        pDecodedSamples += 4;
    }
    i = (count & ~3);
    while (i < (int)count) {
        if (!ma_dr_flac__read_rice_parts_x1(bs, riceParam, &zeroCountParts[0], &riceParamParts[0])) {
            return MA_FALSE;
        }
        riceParamParts[0] &= riceParamMask;
        riceParamParts[0] |= (zeroCountParts[0] << riceParam);
        riceParamParts[0]  = (riceParamParts[0] >> 1) ^ t[riceParamParts[0] & 0x01];
        pDecodedSamples[0] = riceParamParts[0] + ma_dr_flac__calculate_prediction_64(order, shift, coefficients, pDecodedSamples);
        i += 1;
        pDecodedSamples += 1;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice__neon(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 riceParam, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(pSamplesOut != NULL);
    if (lpcOrder > 0 && lpcOrder <= 12) {
        if (ma_dr_flac__use_64_bit_prediction(bitsPerSample, lpcOrder, lpcPrecision)) {
            return ma_dr_flac__decode_samples_with_residual__rice__neon_64(bs, count, riceParam, lpcOrder, lpcShift, coefficients, pSamplesOut);
        } else {
            return ma_dr_flac__decode_samples_with_residual__rice__neon_32(bs, count, riceParam, lpcOrder, lpcShift, coefficients, pSamplesOut);
        }
    } else {
        return ma_dr_flac__decode_samples_with_residual__rice__scalar(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pSamplesOut);
    }
}
#endif
static ma_bool32 ma_dr_flac__decode_samples_with_residual__rice(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 riceParam, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE41)
    if (ma_dr_flac__gIsSSE41Supported) {
        return ma_dr_flac__decode_samples_with_residual__rice__sse41(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pSamplesOut);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported) {
        return ma_dr_flac__decode_samples_with_residual__rice__neon(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pSamplesOut);
    } else
#endif
    {
    #if 0
        return ma_dr_flac__decode_samples_with_residual__rice__reference(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pSamplesOut);
    #else
        return ma_dr_flac__decode_samples_with_residual__rice__scalar(bs, bitsPerSample, count, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pSamplesOut);
    #endif
    }
}
static ma_bool32 ma_dr_flac__read_and_seek_residual__rice(ma_dr_flac_bs* bs, ma_uint32 count, ma_uint8 riceParam)
{
    ma_uint32 i;
    MA_DR_FLAC_ASSERT(bs != NULL);
    for (i = 0; i < count; ++i) {
        if (!ma_dr_flac__seek_rice_parts(bs, riceParam)) {
            return MA_FALSE;
        }
    }
    return MA_TRUE;
}
#if defined(__clang__)
__attribute__((no_sanitize("signed-integer-overflow")))
#endif
static ma_bool32 ma_dr_flac__decode_samples_with_residual__unencoded(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 count, ma_uint8 unencodedBitsPerSample, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pSamplesOut)
{
    ma_uint32 i;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(unencodedBitsPerSample <= 31);
    MA_DR_FLAC_ASSERT(pSamplesOut != NULL);
    for (i = 0; i < count; ++i) {
        if (unencodedBitsPerSample > 0) {
            if (!ma_dr_flac__read_int32(bs, unencodedBitsPerSample, pSamplesOut + i)) {
                return MA_FALSE;
            }
        } else {
            pSamplesOut[i] = 0;
        }
        if (ma_dr_flac__use_64_bit_prediction(bitsPerSample, lpcOrder, lpcPrecision)) {
            pSamplesOut[i] += ma_dr_flac__calculate_prediction_64(lpcOrder, lpcShift, coefficients, pSamplesOut + i);
        } else {
            pSamplesOut[i] += ma_dr_flac__calculate_prediction_32(lpcOrder, lpcShift, coefficients, pSamplesOut + i);
        }
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples_with_residual(ma_dr_flac_bs* bs, ma_uint32 bitsPerSample, ma_uint32 blockSize, ma_uint32 lpcOrder, ma_int32 lpcShift, ma_uint32 lpcPrecision, const ma_int32* coefficients, ma_int32* pDecodedSamples)
{
    ma_uint8 residualMethod;
    ma_uint8 partitionOrder;
    ma_uint32 samplesInPartition;
    ma_uint32 partitionsRemaining;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(blockSize != 0);
    MA_DR_FLAC_ASSERT(pDecodedSamples != NULL);
    if (!ma_dr_flac__read_uint8(bs, 2, &residualMethod)) {
        return MA_FALSE;
    }
    if (residualMethod != MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE && residualMethod != MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE2) {
        return MA_FALSE;
    }
    pDecodedSamples += lpcOrder;
    if (!ma_dr_flac__read_uint8(bs, 4, &partitionOrder)) {
        return MA_FALSE;
    }
    if (partitionOrder > 8) {
        return MA_FALSE;
    }
    if ((blockSize / (1 << partitionOrder)) < lpcOrder) {
        return MA_FALSE;
    }
    samplesInPartition = (blockSize / (1 << partitionOrder)) - lpcOrder;
    partitionsRemaining = (1 << partitionOrder);
    for (;;) {
        ma_uint8 riceParam = 0;
        if (residualMethod == MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE) {
            if (!ma_dr_flac__read_uint8(bs, 4, &riceParam)) {
                return MA_FALSE;
            }
            if (riceParam == 15) {
                riceParam = 0xFF;
            }
        } else if (residualMethod == MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE2) {
            if (!ma_dr_flac__read_uint8(bs, 5, &riceParam)) {
                return MA_FALSE;
            }
            if (riceParam == 31) {
                riceParam = 0xFF;
            }
        }
        if (riceParam != 0xFF) {
            if (!ma_dr_flac__decode_samples_with_residual__rice(bs, bitsPerSample, samplesInPartition, riceParam, lpcOrder, lpcShift, lpcPrecision, coefficients, pDecodedSamples)) {
                return MA_FALSE;
            }
        } else {
            ma_uint8 unencodedBitsPerSample = 0;
            if (!ma_dr_flac__read_uint8(bs, 5, &unencodedBitsPerSample)) {
                return MA_FALSE;
            }
            if (!ma_dr_flac__decode_samples_with_residual__unencoded(bs, bitsPerSample, samplesInPartition, unencodedBitsPerSample, lpcOrder, lpcShift, lpcPrecision, coefficients, pDecodedSamples)) {
                return MA_FALSE;
            }
        }
        pDecodedSamples += samplesInPartition;
        if (partitionsRemaining == 1) {
            break;
        }
        partitionsRemaining -= 1;
        if (partitionOrder != 0) {
            samplesInPartition = blockSize / (1 << partitionOrder);
        }
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__read_and_seek_residual(ma_dr_flac_bs* bs, ma_uint32 blockSize, ma_uint32 order)
{
    ma_uint8 residualMethod;
    ma_uint8 partitionOrder;
    ma_uint32 samplesInPartition;
    ma_uint32 partitionsRemaining;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(blockSize != 0);
    if (!ma_dr_flac__read_uint8(bs, 2, &residualMethod)) {
        return MA_FALSE;
    }
    if (residualMethod != MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE && residualMethod != MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE2) {
        return MA_FALSE;
    }
    if (!ma_dr_flac__read_uint8(bs, 4, &partitionOrder)) {
        return MA_FALSE;
    }
    if (partitionOrder > 8) {
        return MA_FALSE;
    }
    if ((blockSize / (1 << partitionOrder)) <= order) {
        return MA_FALSE;
    }
    samplesInPartition = (blockSize / (1 << partitionOrder)) - order;
    partitionsRemaining = (1 << partitionOrder);
    for (;;)
    {
        ma_uint8 riceParam = 0;
        if (residualMethod == MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE) {
            if (!ma_dr_flac__read_uint8(bs, 4, &riceParam)) {
                return MA_FALSE;
            }
            if (riceParam == 15) {
                riceParam = 0xFF;
            }
        } else if (residualMethod == MA_DR_FLAC_RESIDUAL_CODING_METHOD_PARTITIONED_RICE2) {
            if (!ma_dr_flac__read_uint8(bs, 5, &riceParam)) {
                return MA_FALSE;
            }
            if (riceParam == 31) {
                riceParam = 0xFF;
            }
        }
        if (riceParam != 0xFF) {
            if (!ma_dr_flac__read_and_seek_residual__rice(bs, samplesInPartition, riceParam)) {
                return MA_FALSE;
            }
        } else {
            ma_uint8 unencodedBitsPerSample = 0;
            if (!ma_dr_flac__read_uint8(bs, 5, &unencodedBitsPerSample)) {
                return MA_FALSE;
            }
            if (!ma_dr_flac__seek_bits(bs, unencodedBitsPerSample * samplesInPartition)) {
                return MA_FALSE;
            }
        }
        if (partitionsRemaining == 1) {
            break;
        }
        partitionsRemaining -= 1;
        samplesInPartition = blockSize / (1 << partitionOrder);
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples__constant(ma_dr_flac_bs* bs, ma_uint32 blockSize, ma_uint32 subframeBitsPerSample, ma_int32* pDecodedSamples)
{
    ma_uint32 i;
    ma_int32 sample;
    if (!ma_dr_flac__read_int32(bs, subframeBitsPerSample, &sample)) {
        return MA_FALSE;
    }
    for (i = 0; i < blockSize; ++i) {
        pDecodedSamples[i] = sample;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples__verbatim(ma_dr_flac_bs* bs, ma_uint32 blockSize, ma_uint32 subframeBitsPerSample, ma_int32* pDecodedSamples)
{
    ma_uint32 i;
    for (i = 0; i < blockSize; ++i) {
        ma_int32 sample;
        if (!ma_dr_flac__read_int32(bs, subframeBitsPerSample, &sample)) {
            return MA_FALSE;
        }
        pDecodedSamples[i] = sample;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples__fixed(ma_dr_flac_bs* bs, ma_uint32 blockSize, ma_uint32 subframeBitsPerSample, ma_uint8 lpcOrder, ma_int32* pDecodedSamples)
{
    ma_uint32 i;
    static ma_int32 lpcCoefficientsTable[5][4] = {
        {0,  0, 0,  0},
        {1,  0, 0,  0},
        {2, -1, 0,  0},
        {3, -3, 1,  0},
        {4, -6, 4, -1}
    };
    for (i = 0; i < lpcOrder; ++i) {
        ma_int32 sample;
        if (!ma_dr_flac__read_int32(bs, subframeBitsPerSample, &sample)) {
            return MA_FALSE;
        }
        pDecodedSamples[i] = sample;
    }
    if (!ma_dr_flac__decode_samples_with_residual(bs, subframeBitsPerSample, blockSize, lpcOrder, 0, 4, lpcCoefficientsTable[lpcOrder], pDecodedSamples)) {
        return MA_FALSE;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_samples__lpc(ma_dr_flac_bs* bs, ma_uint32 blockSize, ma_uint32 bitsPerSample, ma_uint8 lpcOrder, ma_int32* pDecodedSamples)
{
    ma_uint8 i;
    ma_uint8 lpcPrecision;
    ma_int8 lpcShift;
    ma_int32 coefficients[32];
    for (i = 0; i < lpcOrder; ++i) {
        ma_int32 sample;
        if (!ma_dr_flac__read_int32(bs, bitsPerSample, &sample)) {
            return MA_FALSE;
        }
        pDecodedSamples[i] = sample;
    }
    if (!ma_dr_flac__read_uint8(bs, 4, &lpcPrecision)) {
        return MA_FALSE;
    }
    if (lpcPrecision == 15) {
        return MA_FALSE;
    }
    lpcPrecision += 1;
    if (!ma_dr_flac__read_int8(bs, 5, &lpcShift)) {
        return MA_FALSE;
    }
    if (lpcShift < 0) {
        return MA_FALSE;
    }
    MA_DR_FLAC_ZERO_MEMORY(coefficients, sizeof(coefficients));
    for (i = 0; i < lpcOrder; ++i) {
        if (!ma_dr_flac__read_int32(bs, lpcPrecision, coefficients + i)) {
            return MA_FALSE;
        }
    }
    if (!ma_dr_flac__decode_samples_with_residual(bs, bitsPerSample, blockSize, lpcOrder, lpcShift, lpcPrecision, coefficients, pDecodedSamples)) {
        return MA_FALSE;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__read_next_flac_frame_header(ma_dr_flac_bs* bs, ma_uint8 streaminfoBitsPerSample, ma_dr_flac_frame_header* header)
{
    const ma_uint32 sampleRateTable[12]  = {0, 88200, 176400, 192000, 8000, 16000, 22050, 24000, 32000, 44100, 48000, 96000};
    const ma_uint8 bitsPerSampleTable[8] = {0, 8, 12, (ma_uint8)-1, 16, 20, 24, (ma_uint8)-1};
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(header != NULL);
    for (;;) {
        ma_uint8 crc8 = 0xCE;
        ma_uint8 reserved = 0;
        ma_uint8 blockingStrategy = 0;
        ma_uint8 blockSize = 0;
        ma_uint8 sampleRate = 0;
        ma_uint8 channelAssignment = 0;
        ma_uint8 bitsPerSample = 0;
        ma_bool32 isVariableBlockSize;
        if (!ma_dr_flac__find_and_seek_to_next_sync_code(bs)) {
            return MA_FALSE;
        }
        if (!ma_dr_flac__read_uint8(bs, 1, &reserved)) {
            return MA_FALSE;
        }
        if (reserved == 1) {
            continue;
        }
        crc8 = ma_dr_flac_crc8(crc8, reserved, 1);
        if (!ma_dr_flac__read_uint8(bs, 1, &blockingStrategy)) {
            return MA_FALSE;
        }
        crc8 = ma_dr_flac_crc8(crc8, blockingStrategy, 1);
        if (!ma_dr_flac__read_uint8(bs, 4, &blockSize)) {
            return MA_FALSE;
        }
        if (blockSize == 0) {
            continue;
        }
        crc8 = ma_dr_flac_crc8(crc8, blockSize, 4);
        if (!ma_dr_flac__read_uint8(bs, 4, &sampleRate)) {
            return MA_FALSE;
        }
        crc8 = ma_dr_flac_crc8(crc8, sampleRate, 4);
        if (!ma_dr_flac__read_uint8(bs, 4, &channelAssignment)) {
            return MA_FALSE;
        }
        if (channelAssignment > 10) {
            continue;
        }
        crc8 = ma_dr_flac_crc8(crc8, channelAssignment, 4);
        if (!ma_dr_flac__read_uint8(bs, 3, &bitsPerSample)) {
            return MA_FALSE;
        }
        if (bitsPerSample == 3 || bitsPerSample == 7) {
            continue;
        }
        crc8 = ma_dr_flac_crc8(crc8, bitsPerSample, 3);
        if (!ma_dr_flac__read_uint8(bs, 1, &reserved)) {
            return MA_FALSE;
        }
        if (reserved == 1) {
            continue;
        }
        crc8 = ma_dr_flac_crc8(crc8, reserved, 1);
        isVariableBlockSize = blockingStrategy == 1;
        if (isVariableBlockSize) {
            ma_uint64 pcmFrameNumber;
            ma_result result = ma_dr_flac__read_utf8_coded_number(bs, &pcmFrameNumber, &crc8);
            if (result != MA_SUCCESS) {
                if (result == MA_AT_END) {
                    return MA_FALSE;
                } else {
                    continue;
                }
            }
            header->flacFrameNumber  = 0;
            header->pcmFrameNumber = pcmFrameNumber;
        } else {
            ma_uint64 flacFrameNumber = 0;
            ma_result result = ma_dr_flac__read_utf8_coded_number(bs, &flacFrameNumber, &crc8);
            if (result != MA_SUCCESS) {
                if (result == MA_AT_END) {
                    return MA_FALSE;
                } else {
                    continue;
                }
            }
            header->flacFrameNumber  = (ma_uint32)flacFrameNumber;
            header->pcmFrameNumber = 0;
        }
        MA_DR_FLAC_ASSERT(blockSize > 0);
        if (blockSize == 1) {
            header->blockSizeInPCMFrames = 192;
        } else if (blockSize <= 5) {
            MA_DR_FLAC_ASSERT(blockSize >= 2);
            header->blockSizeInPCMFrames = 576 * (1 << (blockSize - 2));
        } else if (blockSize == 6) {
            if (!ma_dr_flac__read_uint16(bs, 8, &header->blockSizeInPCMFrames)) {
                return MA_FALSE;
            }
            crc8 = ma_dr_flac_crc8(crc8, header->blockSizeInPCMFrames, 8);
            header->blockSizeInPCMFrames += 1;
        } else if (blockSize == 7) {
            if (!ma_dr_flac__read_uint16(bs, 16, &header->blockSizeInPCMFrames)) {
                return MA_FALSE;
            }
            crc8 = ma_dr_flac_crc8(crc8, header->blockSizeInPCMFrames, 16);
            if (header->blockSizeInPCMFrames == 0xFFFF) {
                return MA_FALSE;
            }
            header->blockSizeInPCMFrames += 1;
        } else {
            MA_DR_FLAC_ASSERT(blockSize >= 8);
            header->blockSizeInPCMFrames = 256 * (1 << (blockSize - 8));
        }
        if (sampleRate <= 11) {
            header->sampleRate = sampleRateTable[sampleRate];
        } else if (sampleRate == 12) {
            if (!ma_dr_flac__read_uint32(bs, 8, &header->sampleRate)) {
                return MA_FALSE;
            }
            crc8 = ma_dr_flac_crc8(crc8, header->sampleRate, 8);
            header->sampleRate *= 1000;
        } else if (sampleRate == 13) {
            if (!ma_dr_flac__read_uint32(bs, 16, &header->sampleRate)) {
                return MA_FALSE;
            }
            crc8 = ma_dr_flac_crc8(crc8, header->sampleRate, 16);
        } else if (sampleRate == 14) {
            if (!ma_dr_flac__read_uint32(bs, 16, &header->sampleRate)) {
                return MA_FALSE;
            }
            crc8 = ma_dr_flac_crc8(crc8, header->sampleRate, 16);
            header->sampleRate *= 10;
        } else {
            continue;
        }
        header->channelAssignment = channelAssignment;
        header->bitsPerSample = bitsPerSampleTable[bitsPerSample];
        if (header->bitsPerSample == 0) {
            header->bitsPerSample = streaminfoBitsPerSample;
        }
        if (header->bitsPerSample != streaminfoBitsPerSample) {
            return MA_FALSE;
        }
        if (!ma_dr_flac__read_uint8(bs, 8, &header->crc8)) {
            return MA_FALSE;
        }
#ifndef MA_DR_FLAC_NO_CRC
        if (header->crc8 != crc8) {
            continue;
        }
#endif
        return MA_TRUE;
    }
}
static ma_bool32 ma_dr_flac__read_subframe_header(ma_dr_flac_bs* bs, ma_dr_flac_subframe* pSubframe)
{
    ma_uint8 header;
    int type;
    if (!ma_dr_flac__read_uint8(bs, 8, &header)) {
        return MA_FALSE;
    }
    if ((header & 0x80) != 0) {
        return MA_FALSE;
    }
    pSubframe->lpcOrder = 0;
    type = (header & 0x7E) >> 1;
    if (type == 0) {
        pSubframe->subframeType = MA_DR_FLAC_SUBFRAME_CONSTANT;
    } else if (type == 1) {
        pSubframe->subframeType = MA_DR_FLAC_SUBFRAME_VERBATIM;
    } else {
        if ((type & 0x20) != 0) {
            pSubframe->subframeType = MA_DR_FLAC_SUBFRAME_LPC;
            pSubframe->lpcOrder = (ma_uint8)(type & 0x1F) + 1;
        } else if ((type & 0x08) != 0) {
            pSubframe->subframeType = MA_DR_FLAC_SUBFRAME_FIXED;
            pSubframe->lpcOrder = (ma_uint8)(type & 0x07);
            if (pSubframe->lpcOrder > 4) {
                pSubframe->subframeType = MA_DR_FLAC_SUBFRAME_RESERVED;
                pSubframe->lpcOrder = 0;
            }
        } else {
            pSubframe->subframeType = MA_DR_FLAC_SUBFRAME_RESERVED;
        }
    }
    if (pSubframe->subframeType == MA_DR_FLAC_SUBFRAME_RESERVED) {
        return MA_FALSE;
    }
    pSubframe->wastedBitsPerSample = 0;
    if ((header & 0x01) == 1) {
        unsigned int wastedBitsPerSample;
        if (!ma_dr_flac__seek_past_next_set_bit(bs, &wastedBitsPerSample)) {
            return MA_FALSE;
        }
        pSubframe->wastedBitsPerSample = (ma_uint8)wastedBitsPerSample + 1;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_subframe(ma_dr_flac_bs* bs, ma_dr_flac_frame* frame, int subframeIndex, ma_int32* pDecodedSamplesOut)
{
    ma_dr_flac_subframe* pSubframe;
    ma_uint32 subframeBitsPerSample;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(frame != NULL);
    pSubframe = frame->subframes + subframeIndex;
    if (!ma_dr_flac__read_subframe_header(bs, pSubframe)) {
        return MA_FALSE;
    }
    subframeBitsPerSample = frame->header.bitsPerSample;
    if ((frame->header.channelAssignment == MA_DR_FLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE || frame->header.channelAssignment == MA_DR_FLAC_CHANNEL_ASSIGNMENT_MID_SIDE) && subframeIndex == 1) {
        subframeBitsPerSample += 1;
    } else if (frame->header.channelAssignment == MA_DR_FLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE && subframeIndex == 0) {
        subframeBitsPerSample += 1;
    }
    if (subframeBitsPerSample > 32) {
        return MA_FALSE;
    }
    if (pSubframe->wastedBitsPerSample >= subframeBitsPerSample) {
        return MA_FALSE;
    }
    subframeBitsPerSample -= pSubframe->wastedBitsPerSample;
    pSubframe->pSamplesS32 = pDecodedSamplesOut;
    if (frame->header.blockSizeInPCMFrames < pSubframe->lpcOrder) {
        return MA_FALSE;
    }
    switch (pSubframe->subframeType)
    {
        case MA_DR_FLAC_SUBFRAME_CONSTANT:
        {
            ma_dr_flac__decode_samples__constant(bs, frame->header.blockSizeInPCMFrames, subframeBitsPerSample, pSubframe->pSamplesS32);
        } break;
        case MA_DR_FLAC_SUBFRAME_VERBATIM:
        {
            ma_dr_flac__decode_samples__verbatim(bs, frame->header.blockSizeInPCMFrames, subframeBitsPerSample, pSubframe->pSamplesS32);
        } break;
        case MA_DR_FLAC_SUBFRAME_FIXED:
        {
            ma_dr_flac__decode_samples__fixed(bs, frame->header.blockSizeInPCMFrames, subframeBitsPerSample, pSubframe->lpcOrder, pSubframe->pSamplesS32);
        } break;
        case MA_DR_FLAC_SUBFRAME_LPC:
        {
            ma_dr_flac__decode_samples__lpc(bs, frame->header.blockSizeInPCMFrames, subframeBitsPerSample, pSubframe->lpcOrder, pSubframe->pSamplesS32);
        } break;
        default: return MA_FALSE;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__seek_subframe(ma_dr_flac_bs* bs, ma_dr_flac_frame* frame, int subframeIndex)
{
    ma_dr_flac_subframe* pSubframe;
    ma_uint32 subframeBitsPerSample;
    MA_DR_FLAC_ASSERT(bs != NULL);
    MA_DR_FLAC_ASSERT(frame != NULL);
    pSubframe = frame->subframes + subframeIndex;
    if (!ma_dr_flac__read_subframe_header(bs, pSubframe)) {
        return MA_FALSE;
    }
    subframeBitsPerSample = frame->header.bitsPerSample;
    if ((frame->header.channelAssignment == MA_DR_FLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE || frame->header.channelAssignment == MA_DR_FLAC_CHANNEL_ASSIGNMENT_MID_SIDE) && subframeIndex == 1) {
        subframeBitsPerSample += 1;
    } else if (frame->header.channelAssignment == MA_DR_FLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE && subframeIndex == 0) {
        subframeBitsPerSample += 1;
    }
    if (pSubframe->wastedBitsPerSample >= subframeBitsPerSample) {
        return MA_FALSE;
    }
    subframeBitsPerSample -= pSubframe->wastedBitsPerSample;
    pSubframe->pSamplesS32 = NULL;
    switch (pSubframe->subframeType)
    {
        case MA_DR_FLAC_SUBFRAME_CONSTANT:
        {
            if (!ma_dr_flac__seek_bits(bs, subframeBitsPerSample)) {
                return MA_FALSE;
            }
        } break;
        case MA_DR_FLAC_SUBFRAME_VERBATIM:
        {
            unsigned int bitsToSeek = frame->header.blockSizeInPCMFrames * subframeBitsPerSample;
            if (!ma_dr_flac__seek_bits(bs, bitsToSeek)) {
                return MA_FALSE;
            }
        } break;
        case MA_DR_FLAC_SUBFRAME_FIXED:
        {
            unsigned int bitsToSeek = pSubframe->lpcOrder * subframeBitsPerSample;
            if (!ma_dr_flac__seek_bits(bs, bitsToSeek)) {
                return MA_FALSE;
            }
            if (!ma_dr_flac__read_and_seek_residual(bs, frame->header.blockSizeInPCMFrames, pSubframe->lpcOrder)) {
                return MA_FALSE;
            }
        } break;
        case MA_DR_FLAC_SUBFRAME_LPC:
        {
            ma_uint8 lpcPrecision;
            unsigned int bitsToSeek = pSubframe->lpcOrder * subframeBitsPerSample;
            if (!ma_dr_flac__seek_bits(bs, bitsToSeek)) {
                return MA_FALSE;
            }
            if (!ma_dr_flac__read_uint8(bs, 4, &lpcPrecision)) {
                return MA_FALSE;
            }
            if (lpcPrecision == 15) {
                return MA_FALSE;
            }
            lpcPrecision += 1;
            bitsToSeek = (pSubframe->lpcOrder * lpcPrecision) + 5;
            if (!ma_dr_flac__seek_bits(bs, bitsToSeek)) {
                return MA_FALSE;
            }
            if (!ma_dr_flac__read_and_seek_residual(bs, frame->header.blockSizeInPCMFrames, pSubframe->lpcOrder)) {
                return MA_FALSE;
            }
        } break;
        default: return MA_FALSE;
    }
    return MA_TRUE;
}
static MA_INLINE ma_uint8 ma_dr_flac__get_channel_count_from_channel_assignment(ma_int8 channelAssignment)
{
    ma_uint8 lookup[] = {1, 2, 3, 4, 5, 6, 7, 8, 2, 2, 2};
    MA_DR_FLAC_ASSERT(channelAssignment <= 10);
    return lookup[channelAssignment];
}
static ma_result ma_dr_flac__decode_flac_frame(ma_dr_flac* pFlac)
{
    int channelCount;
    int i;
    ma_uint8 paddingSizeInBits;
    ma_uint16 desiredCRC16;
#ifndef MA_DR_FLAC_NO_CRC
    ma_uint16 actualCRC16;
#endif
    MA_DR_FLAC_ZERO_MEMORY(pFlac->currentFLACFrame.subframes, sizeof(pFlac->currentFLACFrame.subframes));
    if (pFlac->currentFLACFrame.header.blockSizeInPCMFrames > pFlac->maxBlockSizeInPCMFrames) {
        return MA_ERROR;
    }
    channelCount = ma_dr_flac__get_channel_count_from_channel_assignment(pFlac->currentFLACFrame.header.channelAssignment);
    if (channelCount != (int)pFlac->channels) {
        return MA_ERROR;
    }
    for (i = 0; i < channelCount; ++i) {
        if (!ma_dr_flac__decode_subframe(&pFlac->bs, &pFlac->currentFLACFrame, i, pFlac->pDecodedSamples + (pFlac->currentFLACFrame.header.blockSizeInPCMFrames * i))) {
            return MA_ERROR;
        }
    }
    paddingSizeInBits = (ma_uint8)(MA_DR_FLAC_CACHE_L1_BITS_REMAINING(&pFlac->bs) & 7);
    if (paddingSizeInBits > 0) {
        ma_uint8 padding = 0;
        if (!ma_dr_flac__read_uint8(&pFlac->bs, paddingSizeInBits, &padding)) {
            return MA_AT_END;
        }
    }
#ifndef MA_DR_FLAC_NO_CRC
    actualCRC16 = ma_dr_flac__flush_crc16(&pFlac->bs);
#endif
    if (!ma_dr_flac__read_uint16(&pFlac->bs, 16, &desiredCRC16)) {
        return MA_AT_END;
    }
#ifndef MA_DR_FLAC_NO_CRC
    if (actualCRC16 != desiredCRC16) {
        return MA_CRC_MISMATCH;
    }
#endif
    pFlac->currentFLACFrame.pcmFramesRemaining = pFlac->currentFLACFrame.header.blockSizeInPCMFrames;
    return MA_SUCCESS;
}
static ma_result ma_dr_flac__seek_flac_frame(ma_dr_flac* pFlac)
{
    int channelCount;
    int i;
    ma_uint16 desiredCRC16;
#ifndef MA_DR_FLAC_NO_CRC
    ma_uint16 actualCRC16;
#endif
    channelCount = ma_dr_flac__get_channel_count_from_channel_assignment(pFlac->currentFLACFrame.header.channelAssignment);
    for (i = 0; i < channelCount; ++i) {
        if (!ma_dr_flac__seek_subframe(&pFlac->bs, &pFlac->currentFLACFrame, i)) {
            return MA_ERROR;
        }
    }
    if (!ma_dr_flac__seek_bits(&pFlac->bs, MA_DR_FLAC_CACHE_L1_BITS_REMAINING(&pFlac->bs) & 7)) {
        return MA_ERROR;
    }
#ifndef MA_DR_FLAC_NO_CRC
    actualCRC16 = ma_dr_flac__flush_crc16(&pFlac->bs);
#endif
    if (!ma_dr_flac__read_uint16(&pFlac->bs, 16, &desiredCRC16)) {
        return MA_AT_END;
    }
#ifndef MA_DR_FLAC_NO_CRC
    if (actualCRC16 != desiredCRC16) {
        return MA_CRC_MISMATCH;
    }
#endif
    return MA_SUCCESS;
}
static ma_bool32 ma_dr_flac__read_and_decode_next_flac_frame(ma_dr_flac* pFlac)
{
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    for (;;) {
        ma_result result;
        if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
            return MA_FALSE;
        }
        result = ma_dr_flac__decode_flac_frame(pFlac);
        if (result != MA_SUCCESS) {
            if (result == MA_CRC_MISMATCH) {
                continue;
            } else {
                return MA_FALSE;
            }
        }
        return MA_TRUE;
    }
}
static void ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(ma_dr_flac* pFlac, ma_uint64* pFirstPCMFrame, ma_uint64* pLastPCMFrame)
{
    ma_uint64 firstPCMFrame;
    ma_uint64 lastPCMFrame;
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    firstPCMFrame = pFlac->currentFLACFrame.header.pcmFrameNumber;
    if (firstPCMFrame == 0) {
        firstPCMFrame = ((ma_uint64)pFlac->currentFLACFrame.header.flacFrameNumber) * pFlac->maxBlockSizeInPCMFrames;
    }
    lastPCMFrame = firstPCMFrame + pFlac->currentFLACFrame.header.blockSizeInPCMFrames;
    if (lastPCMFrame > 0) {
        lastPCMFrame -= 1;
    }
    if (pFirstPCMFrame) {
        *pFirstPCMFrame = firstPCMFrame;
    }
    if (pLastPCMFrame) {
        *pLastPCMFrame = lastPCMFrame;
    }
}
static ma_bool32 ma_dr_flac__seek_to_first_frame(ma_dr_flac* pFlac)
{
    ma_bool32 result;
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    result = ma_dr_flac__seek_to_byte(&pFlac->bs, pFlac->firstFLACFramePosInBytes);
    MA_DR_FLAC_ZERO_MEMORY(&pFlac->currentFLACFrame, sizeof(pFlac->currentFLACFrame));
    pFlac->currentPCMFrame = 0;
    return result;
}
static MA_INLINE ma_result ma_dr_flac__seek_to_next_flac_frame(ma_dr_flac* pFlac)
{
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    return ma_dr_flac__seek_flac_frame(pFlac);
}
static ma_uint64 ma_dr_flac__seek_forward_by_pcm_frames(ma_dr_flac* pFlac, ma_uint64 pcmFramesToSeek)
{
    ma_uint64 pcmFramesRead = 0;
    while (pcmFramesToSeek > 0) {
        if (pFlac->currentFLACFrame.pcmFramesRemaining == 0) {
            if (!ma_dr_flac__read_and_decode_next_flac_frame(pFlac)) {
                break;
            }
        } else {
            if (pFlac->currentFLACFrame.pcmFramesRemaining > pcmFramesToSeek) {
                pcmFramesRead   += pcmFramesToSeek;
                pFlac->currentFLACFrame.pcmFramesRemaining -= (ma_uint32)pcmFramesToSeek;
                pcmFramesToSeek  = 0;
            } else {
                pcmFramesRead   += pFlac->currentFLACFrame.pcmFramesRemaining;
                pcmFramesToSeek -= pFlac->currentFLACFrame.pcmFramesRemaining;
                pFlac->currentFLACFrame.pcmFramesRemaining = 0;
            }
        }
    }
    pFlac->currentPCMFrame += pcmFramesRead;
    return pcmFramesRead;
}
static ma_bool32 ma_dr_flac__seek_to_pcm_frame__brute_force(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex)
{
    ma_bool32 isMidFrame = MA_FALSE;
    ma_uint64 runningPCMFrameCount;
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    if (pcmFrameIndex >= pFlac->currentPCMFrame) {
        runningPCMFrameCount = pFlac->currentPCMFrame;
        if (pFlac->currentPCMFrame == 0 && pFlac->currentFLACFrame.pcmFramesRemaining == 0) {
            if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
                return MA_FALSE;
            }
        } else {
            isMidFrame = MA_TRUE;
        }
    } else {
        runningPCMFrameCount = 0;
        if (!ma_dr_flac__seek_to_first_frame(pFlac)) {
            return MA_FALSE;
        }
        if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
            return MA_FALSE;
        }
    }
    for (;;) {
        ma_uint64 pcmFrameCountInThisFLACFrame;
        ma_uint64 firstPCMFrameInFLACFrame = 0;
        ma_uint64 lastPCMFrameInFLACFrame = 0;
        ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(pFlac, &firstPCMFrameInFLACFrame, &lastPCMFrameInFLACFrame);
        pcmFrameCountInThisFLACFrame = (lastPCMFrameInFLACFrame - firstPCMFrameInFLACFrame) + 1;
        if (pcmFrameIndex < (runningPCMFrameCount + pcmFrameCountInThisFLACFrame)) {
            ma_uint64 pcmFramesToDecode = pcmFrameIndex - runningPCMFrameCount;
            if (!isMidFrame) {
                ma_result result = ma_dr_flac__decode_flac_frame(pFlac);
                if (result == MA_SUCCESS) {
                    return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, pcmFramesToDecode) == pcmFramesToDecode;
                } else {
                    if (result == MA_CRC_MISMATCH) {
                        goto next_iteration;
                    } else {
                        return MA_FALSE;
                    }
                }
            } else {
                return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, pcmFramesToDecode) == pcmFramesToDecode;
            }
        } else {
            if (!isMidFrame) {
                ma_result result = ma_dr_flac__seek_to_next_flac_frame(pFlac);
                if (result == MA_SUCCESS) {
                    runningPCMFrameCount += pcmFrameCountInThisFLACFrame;
                } else {
                    if (result == MA_CRC_MISMATCH) {
                        goto next_iteration;
                    } else {
                        return MA_FALSE;
                    }
                }
            } else {
                runningPCMFrameCount += pFlac->currentFLACFrame.pcmFramesRemaining;
                pFlac->currentFLACFrame.pcmFramesRemaining = 0;
                isMidFrame = MA_FALSE;
            }
            if (pcmFrameIndex == pFlac->totalPCMFrameCount && runningPCMFrameCount == pFlac->totalPCMFrameCount) {
                return MA_TRUE;
            }
        }
    next_iteration:
        if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
            return MA_FALSE;
        }
    }
}
#if !defined(MA_DR_FLAC_NO_CRC)
#define MA_DR_FLAC_BINARY_SEARCH_APPROX_COMPRESSION_RATIO 0.6f
static ma_bool32 ma_dr_flac__seek_to_approximate_flac_frame_to_byte(ma_dr_flac* pFlac, ma_uint64 targetByte, ma_uint64 rangeLo, ma_uint64 rangeHi, ma_uint64* pLastSuccessfulSeekOffset)
{
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    MA_DR_FLAC_ASSERT(pLastSuccessfulSeekOffset != NULL);
    MA_DR_FLAC_ASSERT(targetByte >= rangeLo);
    MA_DR_FLAC_ASSERT(targetByte <= rangeHi);
    *pLastSuccessfulSeekOffset = pFlac->firstFLACFramePosInBytes;
    for (;;) {
        ma_uint64 lastTargetByte = targetByte;
        if (!ma_dr_flac__seek_to_byte(&pFlac->bs, targetByte)) {
            if (targetByte == 0) {
                ma_dr_flac__seek_to_first_frame(pFlac);
                return MA_FALSE;
            }
            targetByte = rangeLo + ((rangeHi - rangeLo)/2);
            rangeHi = targetByte;
        } else {
            MA_DR_FLAC_ZERO_MEMORY(&pFlac->currentFLACFrame, sizeof(pFlac->currentFLACFrame));
#if 1
            if (!ma_dr_flac__read_and_decode_next_flac_frame(pFlac)) {
                targetByte = rangeLo + ((rangeHi - rangeLo)/2);
                rangeHi = targetByte;
            } else {
                break;
            }
#else
            if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
                targetByte = rangeLo + ((rangeHi - rangeLo)/2);
                rangeHi = targetByte;
            } else {
                break;
            }
#endif
        }
        if(targetByte == lastTargetByte) {
            return MA_FALSE;
        }
    }
    ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(pFlac, &pFlac->currentPCMFrame, NULL);
    MA_DR_FLAC_ASSERT(targetByte <= rangeHi);
    *pLastSuccessfulSeekOffset = targetByte;
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__decode_flac_frame_and_seek_forward_by_pcm_frames(ma_dr_flac* pFlac, ma_uint64 offset)
{
#if 0
    if (ma_dr_flac__decode_flac_frame(pFlac) != MA_SUCCESS) {
        if (ma_dr_flac__read_and_decode_next_flac_frame(pFlac) == MA_FALSE) {
            return MA_FALSE;
        }
    }
#endif
    return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, offset) == offset;
}
static ma_bool32 ma_dr_flac__seek_to_pcm_frame__binary_search_internal(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex, ma_uint64 byteRangeLo, ma_uint64 byteRangeHi)
{
    ma_uint64 targetByte;
    ma_uint64 pcmRangeLo = pFlac->totalPCMFrameCount;
    ma_uint64 pcmRangeHi = 0;
    ma_uint64 lastSuccessfulSeekOffset = (ma_uint64)-1;
    ma_uint64 closestSeekOffsetBeforeTargetPCMFrame = byteRangeLo;
    ma_uint32 seekForwardThreshold = (pFlac->maxBlockSizeInPCMFrames != 0) ? pFlac->maxBlockSizeInPCMFrames*2 : 4096;
    targetByte = byteRangeLo + (ma_uint64)(((ma_int64)((pcmFrameIndex - pFlac->currentPCMFrame) * pFlac->channels * pFlac->bitsPerSample)/8.0f) * MA_DR_FLAC_BINARY_SEARCH_APPROX_COMPRESSION_RATIO);
    if (targetByte > byteRangeHi) {
        targetByte = byteRangeHi;
    }
    for (;;) {
        if (ma_dr_flac__seek_to_approximate_flac_frame_to_byte(pFlac, targetByte, byteRangeLo, byteRangeHi, &lastSuccessfulSeekOffset)) {
            ma_uint64 newPCMRangeLo;
            ma_uint64 newPCMRangeHi;
            ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(pFlac, &newPCMRangeLo, &newPCMRangeHi);
            if (pcmRangeLo == newPCMRangeLo) {
                if (!ma_dr_flac__seek_to_approximate_flac_frame_to_byte(pFlac, closestSeekOffsetBeforeTargetPCMFrame, closestSeekOffsetBeforeTargetPCMFrame, byteRangeHi, &lastSuccessfulSeekOffset)) {
                    break;
                }
                if (ma_dr_flac__decode_flac_frame_and_seek_forward_by_pcm_frames(pFlac, pcmFrameIndex - pFlac->currentPCMFrame)) {
                    return MA_TRUE;
                } else {
                    break;
                }
            }
            pcmRangeLo = newPCMRangeLo;
            pcmRangeHi = newPCMRangeHi;
            if (pcmRangeLo <= pcmFrameIndex && pcmRangeHi >= pcmFrameIndex) {
                if (ma_dr_flac__decode_flac_frame_and_seek_forward_by_pcm_frames(pFlac, pcmFrameIndex - pFlac->currentPCMFrame) ) {
                    return MA_TRUE;
                } else {
                    break;
                }
            } else {
                const float approxCompressionRatio = (ma_int64)(lastSuccessfulSeekOffset - pFlac->firstFLACFramePosInBytes) / ((ma_int64)(pcmRangeLo * pFlac->channels * pFlac->bitsPerSample)/8.0f);
                if (pcmRangeLo > pcmFrameIndex) {
                    byteRangeHi = lastSuccessfulSeekOffset;
                    if (byteRangeLo > byteRangeHi) {
                        byteRangeLo = byteRangeHi;
                    }
                    targetByte = byteRangeLo + ((byteRangeHi - byteRangeLo) / 2);
                    if (targetByte < byteRangeLo) {
                        targetByte = byteRangeLo;
                    }
                } else  {
                    if ((pcmFrameIndex - pcmRangeLo) < seekForwardThreshold) {
                        if (ma_dr_flac__decode_flac_frame_and_seek_forward_by_pcm_frames(pFlac, pcmFrameIndex - pFlac->currentPCMFrame)) {
                            return MA_TRUE;
                        } else {
                            break;
                        }
                    } else {
                        byteRangeLo = lastSuccessfulSeekOffset;
                        if (byteRangeHi < byteRangeLo) {
                            byteRangeHi = byteRangeLo;
                        }
                        targetByte = lastSuccessfulSeekOffset + (ma_uint64)(((ma_int64)((pcmFrameIndex-pcmRangeLo) * pFlac->channels * pFlac->bitsPerSample)/8.0f) * approxCompressionRatio);
                        if (targetByte > byteRangeHi) {
                            targetByte = byteRangeHi;
                        }
                        if (closestSeekOffsetBeforeTargetPCMFrame < lastSuccessfulSeekOffset) {
                            closestSeekOffsetBeforeTargetPCMFrame = lastSuccessfulSeekOffset;
                        }
                    }
                }
            }
        } else {
            break;
        }
    }
    ma_dr_flac__seek_to_first_frame(pFlac);
    return MA_FALSE;
}
static ma_bool32 ma_dr_flac__seek_to_pcm_frame__binary_search(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex)
{
    ma_uint64 byteRangeLo;
    ma_uint64 byteRangeHi;
    ma_uint32 seekForwardThreshold = (pFlac->maxBlockSizeInPCMFrames != 0) ? pFlac->maxBlockSizeInPCMFrames*2 : 4096;
    if (ma_dr_flac__seek_to_first_frame(pFlac) == MA_FALSE) {
        return MA_FALSE;
    }
    if (pcmFrameIndex < seekForwardThreshold) {
        return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, pcmFrameIndex) == pcmFrameIndex;
    }
    byteRangeLo = pFlac->firstFLACFramePosInBytes;
    byteRangeHi = pFlac->firstFLACFramePosInBytes + (ma_uint64)((ma_int64)(pFlac->totalPCMFrameCount * pFlac->channels * pFlac->bitsPerSample)/8.0f);
    return ma_dr_flac__seek_to_pcm_frame__binary_search_internal(pFlac, pcmFrameIndex, byteRangeLo, byteRangeHi);
}
#endif
static ma_bool32 ma_dr_flac__seek_to_pcm_frame__seek_table(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex)
{
    ma_uint32 iClosestSeekpoint = 0;
    ma_bool32 isMidFrame = MA_FALSE;
    ma_uint64 runningPCMFrameCount;
    ma_uint32 iSeekpoint;
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    if (pFlac->pSeekpoints == NULL || pFlac->seekpointCount == 0) {
        return MA_FALSE;
    }
    if (pFlac->pSeekpoints[0].firstPCMFrame > pcmFrameIndex) {
        return MA_FALSE;
    }
    for (iSeekpoint = 0; iSeekpoint < pFlac->seekpointCount; ++iSeekpoint) {
        if (pFlac->pSeekpoints[iSeekpoint].firstPCMFrame >= pcmFrameIndex) {
            break;
        }
        iClosestSeekpoint = iSeekpoint;
    }
    if (pFlac->pSeekpoints[iClosestSeekpoint].pcmFrameCount == 0 || pFlac->pSeekpoints[iClosestSeekpoint].pcmFrameCount > pFlac->maxBlockSizeInPCMFrames) {
        return MA_FALSE;
    }
    if (pFlac->pSeekpoints[iClosestSeekpoint].firstPCMFrame > pFlac->totalPCMFrameCount && pFlac->totalPCMFrameCount > 0) {
        return MA_FALSE;
    }
#if !defined(MA_DR_FLAC_NO_CRC)
    if (pFlac->totalPCMFrameCount > 0) {
        ma_uint64 byteRangeLo;
        ma_uint64 byteRangeHi;
        byteRangeHi = pFlac->firstFLACFramePosInBytes + (ma_uint64)((ma_int64)(pFlac->totalPCMFrameCount * pFlac->channels * pFlac->bitsPerSample)/8.0f);
        byteRangeLo = pFlac->firstFLACFramePosInBytes + pFlac->pSeekpoints[iClosestSeekpoint].flacFrameOffset;
        if (iClosestSeekpoint < pFlac->seekpointCount-1) {
            ma_uint32 iNextSeekpoint = iClosestSeekpoint + 1;
            if (pFlac->pSeekpoints[iClosestSeekpoint].flacFrameOffset >= pFlac->pSeekpoints[iNextSeekpoint].flacFrameOffset || pFlac->pSeekpoints[iNextSeekpoint].pcmFrameCount == 0) {
                return MA_FALSE;
            }
            if (pFlac->pSeekpoints[iNextSeekpoint].firstPCMFrame != (((ma_uint64)0xFFFFFFFF << 32) | 0xFFFFFFFF)) {
                byteRangeHi = pFlac->firstFLACFramePosInBytes + pFlac->pSeekpoints[iNextSeekpoint].flacFrameOffset - 1;
            }
        }
        if (ma_dr_flac__seek_to_byte(&pFlac->bs, pFlac->firstFLACFramePosInBytes + pFlac->pSeekpoints[iClosestSeekpoint].flacFrameOffset)) {
            if (ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
                ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(pFlac, &pFlac->currentPCMFrame, NULL);
                if (ma_dr_flac__seek_to_pcm_frame__binary_search_internal(pFlac, pcmFrameIndex, byteRangeLo, byteRangeHi)) {
                    return MA_TRUE;
                }
            }
        }
    }
#endif
    if (pcmFrameIndex >= pFlac->currentPCMFrame && pFlac->pSeekpoints[iClosestSeekpoint].firstPCMFrame <= pFlac->currentPCMFrame) {
        runningPCMFrameCount = pFlac->currentPCMFrame;
        if (pFlac->currentPCMFrame == 0 && pFlac->currentFLACFrame.pcmFramesRemaining == 0) {
            if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
                return MA_FALSE;
            }
        } else {
            isMidFrame = MA_TRUE;
        }
    } else {
        runningPCMFrameCount = pFlac->pSeekpoints[iClosestSeekpoint].firstPCMFrame;
        if (!ma_dr_flac__seek_to_byte(&pFlac->bs, pFlac->firstFLACFramePosInBytes + pFlac->pSeekpoints[iClosestSeekpoint].flacFrameOffset)) {
            return MA_FALSE;
        }
        if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
            return MA_FALSE;
        }
    }
    for (;;) {
        ma_uint64 pcmFrameCountInThisFLACFrame;
        ma_uint64 firstPCMFrameInFLACFrame = 0;
        ma_uint64 lastPCMFrameInFLACFrame = 0;
        ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(pFlac, &firstPCMFrameInFLACFrame, &lastPCMFrameInFLACFrame);
        pcmFrameCountInThisFLACFrame = (lastPCMFrameInFLACFrame - firstPCMFrameInFLACFrame) + 1;
        if (pcmFrameIndex < (runningPCMFrameCount + pcmFrameCountInThisFLACFrame)) {
            ma_uint64 pcmFramesToDecode = pcmFrameIndex - runningPCMFrameCount;
            if (!isMidFrame) {
                ma_result result = ma_dr_flac__decode_flac_frame(pFlac);
                if (result == MA_SUCCESS) {
                    return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, pcmFramesToDecode) == pcmFramesToDecode;
                } else {
                    if (result == MA_CRC_MISMATCH) {
                        goto next_iteration;
                    } else {
                        return MA_FALSE;
                    }
                }
            } else {
                return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, pcmFramesToDecode) == pcmFramesToDecode;
            }
        } else {
            if (!isMidFrame) {
                ma_result result = ma_dr_flac__seek_to_next_flac_frame(pFlac);
                if (result == MA_SUCCESS) {
                    runningPCMFrameCount += pcmFrameCountInThisFLACFrame;
                } else {
                    if (result == MA_CRC_MISMATCH) {
                        goto next_iteration;
                    } else {
                        return MA_FALSE;
                    }
                }
            } else {
                runningPCMFrameCount += pFlac->currentFLACFrame.pcmFramesRemaining;
                pFlac->currentFLACFrame.pcmFramesRemaining = 0;
                isMidFrame = MA_FALSE;
            }
            if (pcmFrameIndex == pFlac->totalPCMFrameCount && runningPCMFrameCount == pFlac->totalPCMFrameCount) {
                return MA_TRUE;
            }
        }
    next_iteration:
        if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
            return MA_FALSE;
        }
    }
}
#ifndef MA_DR_FLAC_NO_OGG
typedef struct
{
    ma_uint8 capturePattern[4];
    ma_uint8 structureVersion;
    ma_uint8 headerType;
    ma_uint64 granulePosition;
    ma_uint32 serialNumber;
    ma_uint32 sequenceNumber;
    ma_uint32 checksum;
    ma_uint8 segmentCount;
    ma_uint8 segmentTable[255];
} ma_dr_flac_ogg_page_header;
#endif
typedef struct
{
    ma_dr_flac_read_proc onRead;
    ma_dr_flac_seek_proc onSeek;
    ma_dr_flac_meta_proc onMeta;
    ma_dr_flac_container container;
    void* pUserData;
    void* pUserDataMD;
    ma_uint32 sampleRate;
    ma_uint8  channels;
    ma_uint8  bitsPerSample;
    ma_uint64 totalPCMFrameCount;
    ma_uint16 maxBlockSizeInPCMFrames;
    ma_uint64 runningFilePos;
    ma_bool32 hasStreamInfoBlock;
    ma_bool32 hasMetadataBlocks;
    ma_dr_flac_bs bs;
    ma_dr_flac_frame_header firstFrameHeader;
#ifndef MA_DR_FLAC_NO_OGG
    ma_uint32 oggSerial;
    ma_uint64 oggFirstBytePos;
    ma_dr_flac_ogg_page_header oggBosHeader;
#endif
} ma_dr_flac_init_info;
static MA_INLINE void ma_dr_flac__decode_block_header(ma_uint32 blockHeader, ma_uint8* isLastBlock, ma_uint8* blockType, ma_uint32* blockSize)
{
    blockHeader = ma_dr_flac__be2host_32(blockHeader);
    *isLastBlock = (ma_uint8)((blockHeader & 0x80000000UL) >> 31);
    *blockType   = (ma_uint8)((blockHeader & 0x7F000000UL) >> 24);
    *blockSize   =                (blockHeader & 0x00FFFFFFUL);
}
static MA_INLINE ma_bool32 ma_dr_flac__read_and_decode_block_header(ma_dr_flac_read_proc onRead, void* pUserData, ma_uint8* isLastBlock, ma_uint8* blockType, ma_uint32* blockSize)
{
    ma_uint32 blockHeader;
    *blockSize = 0;
    if (onRead(pUserData, &blockHeader, 4) != 4) {
        return MA_FALSE;
    }
    ma_dr_flac__decode_block_header(blockHeader, isLastBlock, blockType, blockSize);
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__read_streaminfo(ma_dr_flac_read_proc onRead, void* pUserData, ma_dr_flac_streaminfo* pStreamInfo)
{
    ma_uint32 blockSizes;
    ma_uint64 frameSizes = 0;
    ma_uint64 importantProps;
    ma_uint8 md5[16];
    if (onRead(pUserData, &blockSizes, 4) != 4) {
        return MA_FALSE;
    }
    if (onRead(pUserData, &frameSizes, 6) != 6) {
        return MA_FALSE;
    }
    if (onRead(pUserData, &importantProps, 8) != 8) {
        return MA_FALSE;
    }
    if (onRead(pUserData, md5, sizeof(md5)) != sizeof(md5)) {
        return MA_FALSE;
    }
    blockSizes     = ma_dr_flac__be2host_32(blockSizes);
    frameSizes     = ma_dr_flac__be2host_64(frameSizes);
    importantProps = ma_dr_flac__be2host_64(importantProps);
    pStreamInfo->minBlockSizeInPCMFrames = (ma_uint16)((blockSizes & 0xFFFF0000) >> 16);
    pStreamInfo->maxBlockSizeInPCMFrames = (ma_uint16) (blockSizes & 0x0000FFFF);
    pStreamInfo->minFrameSizeInPCMFrames = (ma_uint32)((frameSizes     &  (((ma_uint64)0x00FFFFFF << 16) << 24)) >> 40);
    pStreamInfo->maxFrameSizeInPCMFrames = (ma_uint32)((frameSizes     &  (((ma_uint64)0x00FFFFFF << 16) <<  0)) >> 16);
    pStreamInfo->sampleRate              = (ma_uint32)((importantProps &  (((ma_uint64)0x000FFFFF << 16) << 28)) >> 44);
    pStreamInfo->channels                = (ma_uint8 )((importantProps &  (((ma_uint64)0x0000000E << 16) << 24)) >> 41) + 1;
    pStreamInfo->bitsPerSample           = (ma_uint8 )((importantProps &  (((ma_uint64)0x0000001F << 16) << 20)) >> 36) + 1;
    pStreamInfo->totalPCMFrameCount      =                ((importantProps & ((((ma_uint64)0x0000000F << 16) << 16) | 0xFFFFFFFF)));
    MA_DR_FLAC_COPY_MEMORY(pStreamInfo->md5, md5, sizeof(md5));
    return MA_TRUE;
}
static void* ma_dr_flac__malloc_default(size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_DR_FLAC_MALLOC(sz);
}
static void* ma_dr_flac__realloc_default(void* p, size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_DR_FLAC_REALLOC(p, sz);
}
static void ma_dr_flac__free_default(void* p, void* pUserData)
{
    (void)pUserData;
    MA_DR_FLAC_FREE(p);
}
static void* ma_dr_flac__malloc_from_callbacks(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks == NULL) {
        return NULL;
    }
    if (pAllocationCallbacks->onMalloc != NULL) {
        return pAllocationCallbacks->onMalloc(sz, pAllocationCallbacks->pUserData);
    }
    if (pAllocationCallbacks->onRealloc != NULL) {
        return pAllocationCallbacks->onRealloc(NULL, sz, pAllocationCallbacks->pUserData);
    }
    return NULL;
}
static void* ma_dr_flac__realloc_from_callbacks(void* p, size_t szNew, size_t szOld, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks == NULL) {
        return NULL;
    }
    if (pAllocationCallbacks->onRealloc != NULL) {
        return pAllocationCallbacks->onRealloc(p, szNew, pAllocationCallbacks->pUserData);
    }
    if (pAllocationCallbacks->onMalloc != NULL && pAllocationCallbacks->onFree != NULL) {
        void* p2;
        p2 = pAllocationCallbacks->onMalloc(szNew, pAllocationCallbacks->pUserData);
        if (p2 == NULL) {
            return NULL;
        }
        if (p != NULL) {
            MA_DR_FLAC_COPY_MEMORY(p2, p, szOld);
            pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
        }
        return p2;
    }
    return NULL;
}
static void ma_dr_flac__free_from_callbacks(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (p == NULL || pAllocationCallbacks == NULL) {
        return;
    }
    if (pAllocationCallbacks->onFree != NULL) {
        pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
    }
}
static ma_bool32 ma_dr_flac__read_and_decode_metadata(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, void* pUserData, void* pUserDataMD, ma_uint64* pFirstFramePos, ma_uint64* pSeektablePos, ma_uint32* pSeekpointCount, ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_uint64 runningFilePos = 42;
    ma_uint64 seektablePos   = 0;
    ma_uint32 seektableSize  = 0;
    for (;;) {
        ma_dr_flac_metadata metadata;
        ma_uint8 isLastBlock = 0;
        ma_uint8 blockType = 0;
        ma_uint32 blockSize;
        if (ma_dr_flac__read_and_decode_block_header(onRead, pUserData, &isLastBlock, &blockType, &blockSize) == MA_FALSE) {
            return MA_FALSE;
        }
        runningFilePos += 4;
        metadata.type = blockType;
        metadata.pRawData = NULL;
        metadata.rawDataSize = 0;
        switch (blockType)
        {
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_APPLICATION:
            {
                if (blockSize < 4) {
                    return MA_FALSE;
                }
                if (onMeta) {
                    void* pRawData = ma_dr_flac__malloc_from_callbacks(blockSize, pAllocationCallbacks);
                    if (pRawData == NULL) {
                        return MA_FALSE;
                    }
                    if (onRead(pUserData, pRawData, blockSize) != blockSize) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.pRawData = pRawData;
                    metadata.rawDataSize = blockSize;
                    metadata.data.application.id       = ma_dr_flac__be2host_32(*(ma_uint32*)pRawData);
                    metadata.data.application.pData    = (const void*)((ma_uint8*)pRawData + sizeof(ma_uint32));
                    metadata.data.application.dataSize = blockSize - sizeof(ma_uint32);
                    onMeta(pUserDataMD, &metadata);
                    ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                }
            } break;
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_SEEKTABLE:
            {
                seektablePos  = runningFilePos;
                seektableSize = blockSize;
                if (onMeta) {
                    ma_uint32 seekpointCount;
                    ma_uint32 iSeekpoint;
                    void* pRawData;
                    seekpointCount = blockSize/MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES;
                    pRawData = ma_dr_flac__malloc_from_callbacks(seekpointCount * sizeof(ma_dr_flac_seekpoint), pAllocationCallbacks);
                    if (pRawData == NULL) {
                        return MA_FALSE;
                    }
                    for (iSeekpoint = 0; iSeekpoint < seekpointCount; ++iSeekpoint) {
                        ma_dr_flac_seekpoint* pSeekpoint = (ma_dr_flac_seekpoint*)pRawData + iSeekpoint;
                        if (onRead(pUserData, pSeekpoint, MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES) != MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES) {
                            ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                            return MA_FALSE;
                        }
                        pSeekpoint->firstPCMFrame   = ma_dr_flac__be2host_64(pSeekpoint->firstPCMFrame);
                        pSeekpoint->flacFrameOffset = ma_dr_flac__be2host_64(pSeekpoint->flacFrameOffset);
                        pSeekpoint->pcmFrameCount   = ma_dr_flac__be2host_16(pSeekpoint->pcmFrameCount);
                    }
                    metadata.pRawData = pRawData;
                    metadata.rawDataSize = blockSize;
                    metadata.data.seektable.seekpointCount = seekpointCount;
                    metadata.data.seektable.pSeekpoints = (const ma_dr_flac_seekpoint*)pRawData;
                    onMeta(pUserDataMD, &metadata);
                    ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                }
            } break;
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_VORBIS_COMMENT:
            {
                if (blockSize < 8) {
                    return MA_FALSE;
                }
                if (onMeta) {
                    void* pRawData;
                    const char* pRunningData;
                    const char* pRunningDataEnd;
                    ma_uint32 i;
                    pRawData = ma_dr_flac__malloc_from_callbacks(blockSize, pAllocationCallbacks);
                    if (pRawData == NULL) {
                        return MA_FALSE;
                    }
                    if (onRead(pUserData, pRawData, blockSize) != blockSize) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.pRawData = pRawData;
                    metadata.rawDataSize = blockSize;
                    pRunningData    = (const char*)pRawData;
                    pRunningDataEnd = (const char*)pRawData + blockSize;
                    metadata.data.vorbis_comment.vendorLength = ma_dr_flac__le2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    if ((pRunningDataEnd - pRunningData) - 4 < (ma_int64)metadata.data.vorbis_comment.vendorLength) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.data.vorbis_comment.vendor       = pRunningData;                                            pRunningData += metadata.data.vorbis_comment.vendorLength;
                    metadata.data.vorbis_comment.commentCount = ma_dr_flac__le2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    if ((pRunningDataEnd - pRunningData) / sizeof(ma_uint32) < metadata.data.vorbis_comment.commentCount) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.data.vorbis_comment.pComments    = pRunningData;
                    for (i = 0; i < metadata.data.vorbis_comment.commentCount; ++i) {
                        ma_uint32 commentLength;
                        if (pRunningDataEnd - pRunningData < 4) {
                            ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                            return MA_FALSE;
                        }
                        commentLength = ma_dr_flac__le2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                        if (pRunningDataEnd - pRunningData < (ma_int64)commentLength) {
                            ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                            return MA_FALSE;
                        }
                        pRunningData += commentLength;
                    }
                    onMeta(pUserDataMD, &metadata);
                    ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                }
            } break;
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_CUESHEET:
            {
                if (blockSize < 396) {
                    return MA_FALSE;
                }
                if (onMeta) {
                    void* pRawData;
                    const char* pRunningData;
                    const char* pRunningDataEnd;
                    size_t bufferSize;
                    ma_uint8 iTrack;
                    ma_uint8 iIndex;
                    void* pTrackData;
                    pRawData = ma_dr_flac__malloc_from_callbacks(blockSize, pAllocationCallbacks);
                    if (pRawData == NULL) {
                        return MA_FALSE;
                    }
                    if (onRead(pUserData, pRawData, blockSize) != blockSize) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.pRawData = pRawData;
                    metadata.rawDataSize = blockSize;
                    pRunningData    = (const char*)pRawData;
                    pRunningDataEnd = (const char*)pRawData + blockSize;
                    MA_DR_FLAC_COPY_MEMORY(metadata.data.cuesheet.catalog, pRunningData, 128);                              pRunningData += 128;
                    metadata.data.cuesheet.leadInSampleCount = ma_dr_flac__be2host_64(*(const ma_uint64*)pRunningData); pRunningData += 8;
                    metadata.data.cuesheet.isCD              = (pRunningData[0] & 0x80) != 0;                           pRunningData += 259;
                    metadata.data.cuesheet.trackCount        = pRunningData[0];                                         pRunningData += 1;
                    metadata.data.cuesheet.pTrackData        = NULL;
                    {
                        const char* pRunningDataSaved = pRunningData;
                        bufferSize = metadata.data.cuesheet.trackCount * MA_DR_FLAC_CUESHEET_TRACK_SIZE_IN_BYTES;
                        for (iTrack = 0; iTrack < metadata.data.cuesheet.trackCount; ++iTrack) {
                            ma_uint8 indexCount;
                            ma_uint32 indexPointSize;
                            if (pRunningDataEnd - pRunningData < MA_DR_FLAC_CUESHEET_TRACK_SIZE_IN_BYTES) {
                                ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                                return MA_FALSE;
                            }
                            pRunningData += 35;
                            indexCount = pRunningData[0];
                            pRunningData += 1;
                            bufferSize += indexCount * sizeof(ma_dr_flac_cuesheet_track_index);
                            indexPointSize = indexCount * MA_DR_FLAC_CUESHEET_TRACK_INDEX_SIZE_IN_BYTES;
                            if (pRunningDataEnd - pRunningData < (ma_int64)indexPointSize) {
                                ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                                return MA_FALSE;
                            }
                            pRunningData += indexPointSize;
                        }
                        pRunningData = pRunningDataSaved;
                    }
                    {
                        char* pRunningTrackData;
                        pTrackData = ma_dr_flac__malloc_from_callbacks(bufferSize, pAllocationCallbacks);
                        if (pTrackData == NULL) {
                            ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                            return MA_FALSE;
                        }
                        pRunningTrackData = (char*)pTrackData;
                        for (iTrack = 0; iTrack < metadata.data.cuesheet.trackCount; ++iTrack) {
                            ma_uint8 indexCount;
                            MA_DR_FLAC_COPY_MEMORY(pRunningTrackData, pRunningData, MA_DR_FLAC_CUESHEET_TRACK_SIZE_IN_BYTES);
                            pRunningData      += MA_DR_FLAC_CUESHEET_TRACK_SIZE_IN_BYTES-1;
                            pRunningTrackData += MA_DR_FLAC_CUESHEET_TRACK_SIZE_IN_BYTES-1;
                            indexCount = pRunningData[0];
                            pRunningData      += 1;
                            pRunningTrackData += 1;
                            for (iIndex = 0; iIndex < indexCount; ++iIndex) {
                                ma_dr_flac_cuesheet_track_index* pTrackIndex = (ma_dr_flac_cuesheet_track_index*)pRunningTrackData;
                                MA_DR_FLAC_COPY_MEMORY(pRunningTrackData, pRunningData, MA_DR_FLAC_CUESHEET_TRACK_INDEX_SIZE_IN_BYTES);
                                pRunningData      += MA_DR_FLAC_CUESHEET_TRACK_INDEX_SIZE_IN_BYTES;
                                pRunningTrackData += sizeof(ma_dr_flac_cuesheet_track_index);
                                pTrackIndex->offset = ma_dr_flac__be2host_64(pTrackIndex->offset);
                            }
                        }
                        metadata.data.cuesheet.pTrackData = pTrackData;
                    }
                    ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                    pRawData = NULL;
                    onMeta(pUserDataMD, &metadata);
                    ma_dr_flac__free_from_callbacks(pTrackData, pAllocationCallbacks);
                    pTrackData = NULL;
                }
            } break;
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_PICTURE:
            {
                if (blockSize < 32) {
                    return MA_FALSE;
                }
                if (onMeta) {
                    void* pRawData;
                    const char* pRunningData;
                    const char* pRunningDataEnd;
                    pRawData = ma_dr_flac__malloc_from_callbacks(blockSize, pAllocationCallbacks);
                    if (pRawData == NULL) {
                        return MA_FALSE;
                    }
                    if (onRead(pUserData, pRawData, blockSize) != blockSize) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.pRawData = pRawData;
                    metadata.rawDataSize = blockSize;
                    pRunningData    = (const char*)pRawData;
                    pRunningDataEnd = (const char*)pRawData + blockSize;
                    metadata.data.picture.type       = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    metadata.data.picture.mimeLength = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    if ((pRunningDataEnd - pRunningData) - 24 < (ma_int64)metadata.data.picture.mimeLength) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.data.picture.mime              = pRunningData;                                   pRunningData += metadata.data.picture.mimeLength;
                    metadata.data.picture.descriptionLength = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    if ((pRunningDataEnd - pRunningData) - 20 < (ma_int64)metadata.data.picture.descriptionLength) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.data.picture.description     = pRunningData;                                   pRunningData += metadata.data.picture.descriptionLength;
                    metadata.data.picture.width           = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    metadata.data.picture.height          = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    metadata.data.picture.colorDepth      = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    metadata.data.picture.indexColorCount = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    metadata.data.picture.pictureDataSize = ma_dr_flac__be2host_32_ptr_unaligned(pRunningData); pRunningData += 4;
                    metadata.data.picture.pPictureData    = (const ma_uint8*)pRunningData;
                    if (pRunningDataEnd - pRunningData < (ma_int64)metadata.data.picture.pictureDataSize) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    onMeta(pUserDataMD, &metadata);
                    ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                }
            } break;
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_PADDING:
            {
                if (onMeta) {
                    metadata.data.padding.unused = 0;
                    if (!onSeek(pUserData, blockSize, ma_dr_flac_seek_origin_current)) {
                        isLastBlock = MA_TRUE;
                    } else {
                        onMeta(pUserDataMD, &metadata);
                    }
                }
            } break;
            case MA_DR_FLAC_METADATA_BLOCK_TYPE_INVALID:
            {
                if (onMeta) {
                    if (!onSeek(pUserData, blockSize, ma_dr_flac_seek_origin_current)) {
                        isLastBlock = MA_TRUE;
                    }
                }
            } break;
            default:
            {
                if (onMeta) {
                    void* pRawData = ma_dr_flac__malloc_from_callbacks(blockSize, pAllocationCallbacks);
                    if (pRawData == NULL) {
                        return MA_FALSE;
                    }
                    if (onRead(pUserData, pRawData, blockSize) != blockSize) {
                        ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                        return MA_FALSE;
                    }
                    metadata.pRawData = pRawData;
                    metadata.rawDataSize = blockSize;
                    onMeta(pUserDataMD, &metadata);
                    ma_dr_flac__free_from_callbacks(pRawData, pAllocationCallbacks);
                }
            } break;
        }
        if (onMeta == NULL && blockSize > 0) {
            if (!onSeek(pUserData, blockSize, ma_dr_flac_seek_origin_current)) {
                isLastBlock = MA_TRUE;
            }
        }
        runningFilePos += blockSize;
        if (isLastBlock) {
            break;
        }
    }
    *pSeektablePos   = seektablePos;
    *pSeekpointCount = seektableSize / MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES;
    *pFirstFramePos  = runningFilePos;
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac__init_private__native(ma_dr_flac_init_info* pInit, ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, void* pUserData, void* pUserDataMD, ma_bool32 relaxed)
{
    ma_uint8 isLastBlock;
    ma_uint8 blockType;
    ma_uint32 blockSize;
    (void)onSeek;
    pInit->container = ma_dr_flac_container_native;
    if (!ma_dr_flac__read_and_decode_block_header(onRead, pUserData, &isLastBlock, &blockType, &blockSize)) {
        return MA_FALSE;
    }
    if (blockType != MA_DR_FLAC_METADATA_BLOCK_TYPE_STREAMINFO || blockSize != 34) {
        if (!relaxed) {
            return MA_FALSE;
        } else {
            pInit->hasStreamInfoBlock = MA_FALSE;
            pInit->hasMetadataBlocks  = MA_FALSE;
            if (!ma_dr_flac__read_next_flac_frame_header(&pInit->bs, 0, &pInit->firstFrameHeader)) {
                return MA_FALSE;
            }
            if (pInit->firstFrameHeader.bitsPerSample == 0) {
                return MA_FALSE;
            }
            pInit->sampleRate              = pInit->firstFrameHeader.sampleRate;
            pInit->channels                = ma_dr_flac__get_channel_count_from_channel_assignment(pInit->firstFrameHeader.channelAssignment);
            pInit->bitsPerSample           = pInit->firstFrameHeader.bitsPerSample;
            pInit->maxBlockSizeInPCMFrames = 65535;
            return MA_TRUE;
        }
    } else {
        ma_dr_flac_streaminfo streaminfo;
        if (!ma_dr_flac__read_streaminfo(onRead, pUserData, &streaminfo)) {
            return MA_FALSE;
        }
        pInit->hasStreamInfoBlock      = MA_TRUE;
        pInit->sampleRate              = streaminfo.sampleRate;
        pInit->channels                = streaminfo.channels;
        pInit->bitsPerSample           = streaminfo.bitsPerSample;
        pInit->totalPCMFrameCount      = streaminfo.totalPCMFrameCount;
        pInit->maxBlockSizeInPCMFrames = streaminfo.maxBlockSizeInPCMFrames;
        pInit->hasMetadataBlocks       = !isLastBlock;
        if (onMeta) {
            ma_dr_flac_metadata metadata;
            metadata.type = MA_DR_FLAC_METADATA_BLOCK_TYPE_STREAMINFO;
            metadata.pRawData = NULL;
            metadata.rawDataSize = 0;
            metadata.data.streaminfo = streaminfo;
            onMeta(pUserDataMD, &metadata);
        }
        return MA_TRUE;
    }
}
#ifndef MA_DR_FLAC_NO_OGG
#define MA_DR_FLAC_OGG_MAX_PAGE_SIZE            65307
#define MA_DR_FLAC_OGG_CAPTURE_PATTERN_CRC32    1605413199
typedef enum
{
    ma_dr_flac_ogg_recover_on_crc_mismatch,
    ma_dr_flac_ogg_fail_on_crc_mismatch
} ma_dr_flac_ogg_crc_mismatch_recovery;
#ifndef MA_DR_FLAC_NO_CRC
static ma_uint32 ma_dr_flac__crc32_table[] = {
    0x00000000L, 0x04C11DB7L, 0x09823B6EL, 0x0D4326D9L,
    0x130476DCL, 0x17C56B6BL, 0x1A864DB2L, 0x1E475005L,
    0x2608EDB8L, 0x22C9F00FL, 0x2F8AD6D6L, 0x2B4BCB61L,
    0x350C9B64L, 0x31CD86D3L, 0x3C8EA00AL, 0x384FBDBDL,
    0x4C11DB70L, 0x48D0C6C7L, 0x4593E01EL, 0x4152FDA9L,
    0x5F15ADACL, 0x5BD4B01BL, 0x569796C2L, 0x52568B75L,
    0x6A1936C8L, 0x6ED82B7FL, 0x639B0DA6L, 0x675A1011L,
    0x791D4014L, 0x7DDC5DA3L, 0x709F7B7AL, 0x745E66CDL,
    0x9823B6E0L, 0x9CE2AB57L, 0x91A18D8EL, 0x95609039L,
    0x8B27C03CL, 0x8FE6DD8BL, 0x82A5FB52L, 0x8664E6E5L,
    0xBE2B5B58L, 0xBAEA46EFL, 0xB7A96036L, 0xB3687D81L,
    0xAD2F2D84L, 0xA9EE3033L, 0xA4AD16EAL, 0xA06C0B5DL,
    0xD4326D90L, 0xD0F37027L, 0xDDB056FEL, 0xD9714B49L,
    0xC7361B4CL, 0xC3F706FBL, 0xCEB42022L, 0xCA753D95L,
    0xF23A8028L, 0xF6FB9D9FL, 0xFBB8BB46L, 0xFF79A6F1L,
    0xE13EF6F4L, 0xE5FFEB43L, 0xE8BCCD9AL, 0xEC7DD02DL,
    0x34867077L, 0x30476DC0L, 0x3D044B19L, 0x39C556AEL,
    0x278206ABL, 0x23431B1CL, 0x2E003DC5L, 0x2AC12072L,
    0x128E9DCFL, 0x164F8078L, 0x1B0CA6A1L, 0x1FCDBB16L,
    0x018AEB13L, 0x054BF6A4L, 0x0808D07DL, 0x0CC9CDCAL,
    0x7897AB07L, 0x7C56B6B0L, 0x71159069L, 0x75D48DDEL,
    0x6B93DDDBL, 0x6F52C06CL, 0x6211E6B5L, 0x66D0FB02L,
    0x5E9F46BFL, 0x5A5E5B08L, 0x571D7DD1L, 0x53DC6066L,
    0x4D9B3063L, 0x495A2DD4L, 0x44190B0DL, 0x40D816BAL,
    0xACA5C697L, 0xA864DB20L, 0xA527FDF9L, 0xA1E6E04EL,
    0xBFA1B04BL, 0xBB60ADFCL, 0xB6238B25L, 0xB2E29692L,
    0x8AAD2B2FL, 0x8E6C3698L, 0x832F1041L, 0x87EE0DF6L,
    0x99A95DF3L, 0x9D684044L, 0x902B669DL, 0x94EA7B2AL,
    0xE0B41DE7L, 0xE4750050L, 0xE9362689L, 0xEDF73B3EL,
    0xF3B06B3BL, 0xF771768CL, 0xFA325055L, 0xFEF34DE2L,
    0xC6BCF05FL, 0xC27DEDE8L, 0xCF3ECB31L, 0xCBFFD686L,
    0xD5B88683L, 0xD1799B34L, 0xDC3ABDEDL, 0xD8FBA05AL,
    0x690CE0EEL, 0x6DCDFD59L, 0x608EDB80L, 0x644FC637L,
    0x7A089632L, 0x7EC98B85L, 0x738AAD5CL, 0x774BB0EBL,
    0x4F040D56L, 0x4BC510E1L, 0x46863638L, 0x42472B8FL,
    0x5C007B8AL, 0x58C1663DL, 0x558240E4L, 0x51435D53L,
    0x251D3B9EL, 0x21DC2629L, 0x2C9F00F0L, 0x285E1D47L,
    0x36194D42L, 0x32D850F5L, 0x3F9B762CL, 0x3B5A6B9BL,
    0x0315D626L, 0x07D4CB91L, 0x0A97ED48L, 0x0E56F0FFL,
    0x1011A0FAL, 0x14D0BD4DL, 0x19939B94L, 0x1D528623L,
    0xF12F560EL, 0xF5EE4BB9L, 0xF8AD6D60L, 0xFC6C70D7L,
    0xE22B20D2L, 0xE6EA3D65L, 0xEBA91BBCL, 0xEF68060BL,
    0xD727BBB6L, 0xD3E6A601L, 0xDEA580D8L, 0xDA649D6FL,
    0xC423CD6AL, 0xC0E2D0DDL, 0xCDA1F604L, 0xC960EBB3L,
    0xBD3E8D7EL, 0xB9FF90C9L, 0xB4BCB610L, 0xB07DABA7L,
    0xAE3AFBA2L, 0xAAFBE615L, 0xA7B8C0CCL, 0xA379DD7BL,
    0x9B3660C6L, 0x9FF77D71L, 0x92B45BA8L, 0x9675461FL,
    0x8832161AL, 0x8CF30BADL, 0x81B02D74L, 0x857130C3L,
    0x5D8A9099L, 0x594B8D2EL, 0x5408ABF7L, 0x50C9B640L,
    0x4E8EE645L, 0x4A4FFBF2L, 0x470CDD2BL, 0x43CDC09CL,
    0x7B827D21L, 0x7F436096L, 0x7200464FL, 0x76C15BF8L,
    0x68860BFDL, 0x6C47164AL, 0x61043093L, 0x65C52D24L,
    0x119B4BE9L, 0x155A565EL, 0x18197087L, 0x1CD86D30L,
    0x029F3D35L, 0x065E2082L, 0x0B1D065BL, 0x0FDC1BECL,
    0x3793A651L, 0x3352BBE6L, 0x3E119D3FL, 0x3AD08088L,
    0x2497D08DL, 0x2056CD3AL, 0x2D15EBE3L, 0x29D4F654L,
    0xC5A92679L, 0xC1683BCEL, 0xCC2B1D17L, 0xC8EA00A0L,
    0xD6AD50A5L, 0xD26C4D12L, 0xDF2F6BCBL, 0xDBEE767CL,
    0xE3A1CBC1L, 0xE760D676L, 0xEA23F0AFL, 0xEEE2ED18L,
    0xF0A5BD1DL, 0xF464A0AAL, 0xF9278673L, 0xFDE69BC4L,
    0x89B8FD09L, 0x8D79E0BEL, 0x803AC667L, 0x84FBDBD0L,
    0x9ABC8BD5L, 0x9E7D9662L, 0x933EB0BBL, 0x97FFAD0CL,
    0xAFB010B1L, 0xAB710D06L, 0xA6322BDFL, 0xA2F33668L,
    0xBCB4666DL, 0xB8757BDAL, 0xB5365D03L, 0xB1F740B4L
};
#endif
static MA_INLINE ma_uint32 ma_dr_flac_crc32_byte(ma_uint32 crc32, ma_uint8 data)
{
#ifndef MA_DR_FLAC_NO_CRC
    return (crc32 << 8) ^ ma_dr_flac__crc32_table[(ma_uint8)((crc32 >> 24) & 0xFF) ^ data];
#else
    (void)data;
    return crc32;
#endif
}
#if 0
static MA_INLINE ma_uint32 ma_dr_flac_crc32_uint32(ma_uint32 crc32, ma_uint32 data)
{
    crc32 = ma_dr_flac_crc32_byte(crc32, (ma_uint8)((data >> 24) & 0xFF));
    crc32 = ma_dr_flac_crc32_byte(crc32, (ma_uint8)((data >> 16) & 0xFF));
    crc32 = ma_dr_flac_crc32_byte(crc32, (ma_uint8)((data >>  8) & 0xFF));
    crc32 = ma_dr_flac_crc32_byte(crc32, (ma_uint8)((data >>  0) & 0xFF));
    return crc32;
}
static MA_INLINE ma_uint32 ma_dr_flac_crc32_uint64(ma_uint32 crc32, ma_uint64 data)
{
    crc32 = ma_dr_flac_crc32_uint32(crc32, (ma_uint32)((data >> 32) & 0xFFFFFFFF));
    crc32 = ma_dr_flac_crc32_uint32(crc32, (ma_uint32)((data >>  0) & 0xFFFFFFFF));
    return crc32;
}
#endif
static MA_INLINE ma_uint32 ma_dr_flac_crc32_buffer(ma_uint32 crc32, ma_uint8* pData, ma_uint32 dataSize)
{
    ma_uint32 i;
    for (i = 0; i < dataSize; ++i) {
        crc32 = ma_dr_flac_crc32_byte(crc32, pData[i]);
    }
    return crc32;
}
static MA_INLINE ma_bool32 ma_dr_flac_ogg__is_capture_pattern(ma_uint8 pattern[4])
{
    return pattern[0] == 'O' && pattern[1] == 'g' && pattern[2] == 'g' && pattern[3] == 'S';
}
static MA_INLINE ma_uint32 ma_dr_flac_ogg__get_page_header_size(ma_dr_flac_ogg_page_header* pHeader)
{
    return 27 + pHeader->segmentCount;
}
static MA_INLINE ma_uint32 ma_dr_flac_ogg__get_page_body_size(ma_dr_flac_ogg_page_header* pHeader)
{
    ma_uint32 pageBodySize = 0;
    int i;
    for (i = 0; i < pHeader->segmentCount; ++i) {
        pageBodySize += pHeader->segmentTable[i];
    }
    return pageBodySize;
}
static ma_result ma_dr_flac_ogg__read_page_header_after_capture_pattern(ma_dr_flac_read_proc onRead, void* pUserData, ma_dr_flac_ogg_page_header* pHeader, ma_uint32* pBytesRead, ma_uint32* pCRC32)
{
    ma_uint8 data[23];
    ma_uint32 i;
    MA_DR_FLAC_ASSERT(*pCRC32 == MA_DR_FLAC_OGG_CAPTURE_PATTERN_CRC32);
    if (onRead(pUserData, data, 23) != 23) {
        return MA_AT_END;
    }
    *pBytesRead += 23;
    pHeader->capturePattern[0] = 'O';
    pHeader->capturePattern[1] = 'g';
    pHeader->capturePattern[2] = 'g';
    pHeader->capturePattern[3] = 'S';
    pHeader->structureVersion = data[0];
    pHeader->headerType       = data[1];
    MA_DR_FLAC_COPY_MEMORY(&pHeader->granulePosition, &data[ 2], 8);
    MA_DR_FLAC_COPY_MEMORY(&pHeader->serialNumber,    &data[10], 4);
    MA_DR_FLAC_COPY_MEMORY(&pHeader->sequenceNumber,  &data[14], 4);
    MA_DR_FLAC_COPY_MEMORY(&pHeader->checksum,        &data[18], 4);
    pHeader->segmentCount     = data[22];
    data[18] = 0;
    data[19] = 0;
    data[20] = 0;
    data[21] = 0;
    for (i = 0; i < 23; ++i) {
        *pCRC32 = ma_dr_flac_crc32_byte(*pCRC32, data[i]);
    }
    if (onRead(pUserData, pHeader->segmentTable, pHeader->segmentCount) != pHeader->segmentCount) {
        return MA_AT_END;
    }
    *pBytesRead += pHeader->segmentCount;
    for (i = 0; i < pHeader->segmentCount; ++i) {
        *pCRC32 = ma_dr_flac_crc32_byte(*pCRC32, pHeader->segmentTable[i]);
    }
    return MA_SUCCESS;
}
static ma_result ma_dr_flac_ogg__read_page_header(ma_dr_flac_read_proc onRead, void* pUserData, ma_dr_flac_ogg_page_header* pHeader, ma_uint32* pBytesRead, ma_uint32* pCRC32)
{
    ma_uint8 id[4];
    *pBytesRead = 0;
    if (onRead(pUserData, id, 4) != 4) {
        return MA_AT_END;
    }
    *pBytesRead += 4;
    for (;;) {
        if (ma_dr_flac_ogg__is_capture_pattern(id)) {
            ma_result result;
            *pCRC32 = MA_DR_FLAC_OGG_CAPTURE_PATTERN_CRC32;
            result = ma_dr_flac_ogg__read_page_header_after_capture_pattern(onRead, pUserData, pHeader, pBytesRead, pCRC32);
            if (result == MA_SUCCESS) {
                return MA_SUCCESS;
            } else {
                if (result == MA_CRC_MISMATCH) {
                    continue;
                } else {
                    return result;
                }
            }
        } else {
            id[0] = id[1];
            id[1] = id[2];
            id[2] = id[3];
            if (onRead(pUserData, &id[3], 1) != 1) {
                return MA_AT_END;
            }
            *pBytesRead += 1;
        }
    }
}
typedef struct
{
    ma_dr_flac_read_proc onRead;
    ma_dr_flac_seek_proc onSeek;
    void* pUserData;
    ma_uint64 currentBytePos;
    ma_uint64 firstBytePos;
    ma_uint32 serialNumber;
    ma_dr_flac_ogg_page_header bosPageHeader;
    ma_dr_flac_ogg_page_header currentPageHeader;
    ma_uint32 bytesRemainingInPage;
    ma_uint32 pageDataSize;
    ma_uint8 pageData[MA_DR_FLAC_OGG_MAX_PAGE_SIZE];
} ma_dr_flac_oggbs;
static size_t ma_dr_flac_oggbs__read_physical(ma_dr_flac_oggbs* oggbs, void* bufferOut, size_t bytesToRead)
{
    size_t bytesActuallyRead = oggbs->onRead(oggbs->pUserData, bufferOut, bytesToRead);
    oggbs->currentBytePos += bytesActuallyRead;
    return bytesActuallyRead;
}
static ma_bool32 ma_dr_flac_oggbs__seek_physical(ma_dr_flac_oggbs* oggbs, ma_uint64 offset, ma_dr_flac_seek_origin origin)
{
    if (origin == ma_dr_flac_seek_origin_start) {
        if (offset <= 0x7FFFFFFF) {
            if (!oggbs->onSeek(oggbs->pUserData, (int)offset, ma_dr_flac_seek_origin_start)) {
                return MA_FALSE;
            }
            oggbs->currentBytePos = offset;
            return MA_TRUE;
        } else {
            if (!oggbs->onSeek(oggbs->pUserData, 0x7FFFFFFF, ma_dr_flac_seek_origin_start)) {
                return MA_FALSE;
            }
            oggbs->currentBytePos = offset;
            return ma_dr_flac_oggbs__seek_physical(oggbs, offset - 0x7FFFFFFF, ma_dr_flac_seek_origin_current);
        }
    } else {
        while (offset > 0x7FFFFFFF) {
            if (!oggbs->onSeek(oggbs->pUserData, 0x7FFFFFFF, ma_dr_flac_seek_origin_current)) {
                return MA_FALSE;
            }
            oggbs->currentBytePos += 0x7FFFFFFF;
            offset -= 0x7FFFFFFF;
        }
        if (!oggbs->onSeek(oggbs->pUserData, (int)offset, ma_dr_flac_seek_origin_current)) {
            return MA_FALSE;
        }
        oggbs->currentBytePos += offset;
        return MA_TRUE;
    }
}
static ma_bool32 ma_dr_flac_oggbs__goto_next_page(ma_dr_flac_oggbs* oggbs, ma_dr_flac_ogg_crc_mismatch_recovery recoveryMethod)
{
    ma_dr_flac_ogg_page_header header;
    for (;;) {
        ma_uint32 crc32 = 0;
        ma_uint32 bytesRead;
        ma_uint32 pageBodySize;
#ifndef MA_DR_FLAC_NO_CRC
        ma_uint32 actualCRC32;
#endif
        if (ma_dr_flac_ogg__read_page_header(oggbs->onRead, oggbs->pUserData, &header, &bytesRead, &crc32) != MA_SUCCESS) {
            return MA_FALSE;
        }
        oggbs->currentBytePos += bytesRead;
        pageBodySize = ma_dr_flac_ogg__get_page_body_size(&header);
        if (pageBodySize > MA_DR_FLAC_OGG_MAX_PAGE_SIZE) {
            continue;
        }
        if (header.serialNumber != oggbs->serialNumber) {
            if (pageBodySize > 0 && !ma_dr_flac_oggbs__seek_physical(oggbs, pageBodySize, ma_dr_flac_seek_origin_current)) {
                return MA_FALSE;
            }
            continue;
        }
        if (ma_dr_flac_oggbs__read_physical(oggbs, oggbs->pageData, pageBodySize) != pageBodySize) {
            return MA_FALSE;
        }
        oggbs->pageDataSize = pageBodySize;
#ifndef MA_DR_FLAC_NO_CRC
        actualCRC32 = ma_dr_flac_crc32_buffer(crc32, oggbs->pageData, oggbs->pageDataSize);
        if (actualCRC32 != header.checksum) {
            if (recoveryMethod == ma_dr_flac_ogg_recover_on_crc_mismatch) {
                continue;
            } else {
                ma_dr_flac_oggbs__goto_next_page(oggbs, ma_dr_flac_ogg_recover_on_crc_mismatch);
                return MA_FALSE;
            }
        }
#else
        (void)recoveryMethod;
#endif
        oggbs->currentPageHeader = header;
        oggbs->bytesRemainingInPage = pageBodySize;
        return MA_TRUE;
    }
}
#if 0
static ma_uint8 ma_dr_flac_oggbs__get_current_segment_index(ma_dr_flac_oggbs* oggbs, ma_uint8* pBytesRemainingInSeg)
{
    ma_uint32 bytesConsumedInPage = ma_dr_flac_ogg__get_page_body_size(&oggbs->currentPageHeader) - oggbs->bytesRemainingInPage;
    ma_uint8 iSeg = 0;
    ma_uint32 iByte = 0;
    while (iByte < bytesConsumedInPage) {
        ma_uint8 segmentSize = oggbs->currentPageHeader.segmentTable[iSeg];
        if (iByte + segmentSize > bytesConsumedInPage) {
            break;
        } else {
            iSeg += 1;
            iByte += segmentSize;
        }
    }
    *pBytesRemainingInSeg = oggbs->currentPageHeader.segmentTable[iSeg] - (ma_uint8)(bytesConsumedInPage - iByte);
    return iSeg;
}
static ma_bool32 ma_dr_flac_oggbs__seek_to_next_packet(ma_dr_flac_oggbs* oggbs)
{
    for (;;) {
        ma_bool32 atEndOfPage = MA_FALSE;
        ma_uint8 bytesRemainingInSeg;
        ma_uint8 iFirstSeg = ma_dr_flac_oggbs__get_current_segment_index(oggbs, &bytesRemainingInSeg);
        ma_uint32 bytesToEndOfPacketOrPage = bytesRemainingInSeg;
        for (ma_uint8 iSeg = iFirstSeg; iSeg < oggbs->currentPageHeader.segmentCount; ++iSeg) {
            ma_uint8 segmentSize = oggbs->currentPageHeader.segmentTable[iSeg];
            if (segmentSize < 255) {
                if (iSeg == oggbs->currentPageHeader.segmentCount-1) {
                    atEndOfPage = MA_TRUE;
                }
                break;
            }
            bytesToEndOfPacketOrPage += segmentSize;
        }
        ma_dr_flac_oggbs__seek_physical(oggbs, bytesToEndOfPacketOrPage, ma_dr_flac_seek_origin_current);
        oggbs->bytesRemainingInPage -= bytesToEndOfPacketOrPage;
        if (atEndOfPage) {
            if (!ma_dr_flac_oggbs__goto_next_page(oggbs)) {
                return MA_FALSE;
            }
            if ((oggbs->currentPageHeader.headerType & 0x01) == 0) {
                return MA_TRUE;
            }
        } else {
            return MA_TRUE;
        }
    }
}
static ma_bool32 ma_dr_flac_oggbs__seek_to_next_frame(ma_dr_flac_oggbs* oggbs)
{
    return ma_dr_flac_oggbs__seek_to_next_packet(oggbs);
}
#endif
static size_t ma_dr_flac__on_read_ogg(void* pUserData, void* bufferOut, size_t bytesToRead)
{
    ma_dr_flac_oggbs* oggbs = (ma_dr_flac_oggbs*)pUserData;
    ma_uint8* pRunningBufferOut = (ma_uint8*)bufferOut;
    size_t bytesRead = 0;
    MA_DR_FLAC_ASSERT(oggbs != NULL);
    MA_DR_FLAC_ASSERT(pRunningBufferOut != NULL);
    while (bytesRead < bytesToRead) {
        size_t bytesRemainingToRead = bytesToRead - bytesRead;
        if (oggbs->bytesRemainingInPage >= bytesRemainingToRead) {
            MA_DR_FLAC_COPY_MEMORY(pRunningBufferOut, oggbs->pageData + (oggbs->pageDataSize - oggbs->bytesRemainingInPage), bytesRemainingToRead);
            bytesRead += bytesRemainingToRead;
            oggbs->bytesRemainingInPage -= (ma_uint32)bytesRemainingToRead;
            break;
        }
        if (oggbs->bytesRemainingInPage > 0) {
            MA_DR_FLAC_COPY_MEMORY(pRunningBufferOut, oggbs->pageData + (oggbs->pageDataSize - oggbs->bytesRemainingInPage), oggbs->bytesRemainingInPage);
            bytesRead += oggbs->bytesRemainingInPage;
            pRunningBufferOut += oggbs->bytesRemainingInPage;
            oggbs->bytesRemainingInPage = 0;
        }
        MA_DR_FLAC_ASSERT(bytesRemainingToRead > 0);
        if (!ma_dr_flac_oggbs__goto_next_page(oggbs, ma_dr_flac_ogg_recover_on_crc_mismatch)) {
            break;
        }
    }
    return bytesRead;
}
static ma_bool32 ma_dr_flac__on_seek_ogg(void* pUserData, int offset, ma_dr_flac_seek_origin origin)
{
    ma_dr_flac_oggbs* oggbs = (ma_dr_flac_oggbs*)pUserData;
    int bytesSeeked = 0;
    MA_DR_FLAC_ASSERT(oggbs != NULL);
    MA_DR_FLAC_ASSERT(offset >= 0);
    if (origin == ma_dr_flac_seek_origin_start) {
        if (!ma_dr_flac_oggbs__seek_physical(oggbs, (int)oggbs->firstBytePos, ma_dr_flac_seek_origin_start)) {
            return MA_FALSE;
        }
        if (!ma_dr_flac_oggbs__goto_next_page(oggbs, ma_dr_flac_ogg_fail_on_crc_mismatch)) {
            return MA_FALSE;
        }
        return ma_dr_flac__on_seek_ogg(pUserData, offset, ma_dr_flac_seek_origin_current);
    }
    MA_DR_FLAC_ASSERT(origin == ma_dr_flac_seek_origin_current);
    while (bytesSeeked < offset) {
        int bytesRemainingToSeek = offset - bytesSeeked;
        MA_DR_FLAC_ASSERT(bytesRemainingToSeek >= 0);
        if (oggbs->bytesRemainingInPage >= (size_t)bytesRemainingToSeek) {
            bytesSeeked += bytesRemainingToSeek;
            (void)bytesSeeked;
            oggbs->bytesRemainingInPage -= bytesRemainingToSeek;
            break;
        }
        if (oggbs->bytesRemainingInPage > 0) {
            bytesSeeked += (int)oggbs->bytesRemainingInPage;
            oggbs->bytesRemainingInPage = 0;
        }
        MA_DR_FLAC_ASSERT(bytesRemainingToSeek > 0);
        if (!ma_dr_flac_oggbs__goto_next_page(oggbs, ma_dr_flac_ogg_fail_on_crc_mismatch)) {
            return MA_FALSE;
        }
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_flac_ogg__seek_to_pcm_frame(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex)
{
    ma_dr_flac_oggbs* oggbs = (ma_dr_flac_oggbs*)pFlac->_oggbs;
    ma_uint64 originalBytePos;
    ma_uint64 runningGranulePosition;
    ma_uint64 runningFrameBytePos;
    ma_uint64 runningPCMFrameCount;
    MA_DR_FLAC_ASSERT(oggbs != NULL);
    originalBytePos = oggbs->currentBytePos;
    if (!ma_dr_flac__seek_to_byte(&pFlac->bs, pFlac->firstFLACFramePosInBytes)) {
        return MA_FALSE;
    }
    oggbs->bytesRemainingInPage = 0;
    runningGranulePosition = 0;
    for (;;) {
        if (!ma_dr_flac_oggbs__goto_next_page(oggbs, ma_dr_flac_ogg_recover_on_crc_mismatch)) {
            ma_dr_flac_oggbs__seek_physical(oggbs, originalBytePos, ma_dr_flac_seek_origin_start);
            return MA_FALSE;
        }
        runningFrameBytePos = oggbs->currentBytePos - ma_dr_flac_ogg__get_page_header_size(&oggbs->currentPageHeader) - oggbs->pageDataSize;
        if (oggbs->currentPageHeader.granulePosition >= pcmFrameIndex) {
            break;
        }
        if ((oggbs->currentPageHeader.headerType & 0x01) == 0) {
            if (oggbs->currentPageHeader.segmentTable[0] >= 2) {
                ma_uint8 firstBytesInPage[2];
                firstBytesInPage[0] = oggbs->pageData[0];
                firstBytesInPage[1] = oggbs->pageData[1];
                if ((firstBytesInPage[0] == 0xFF) && (firstBytesInPage[1] & 0xFC) == 0xF8) {
                    runningGranulePosition = oggbs->currentPageHeader.granulePosition;
                }
                continue;
            }
        }
    }
    if (!ma_dr_flac_oggbs__seek_physical(oggbs, runningFrameBytePos, ma_dr_flac_seek_origin_start)) {
        return MA_FALSE;
    }
    if (!ma_dr_flac_oggbs__goto_next_page(oggbs, ma_dr_flac_ogg_recover_on_crc_mismatch)) {
        return MA_FALSE;
    }
    runningPCMFrameCount = runningGranulePosition;
    for (;;) {
        ma_uint64 firstPCMFrameInFLACFrame = 0;
        ma_uint64 lastPCMFrameInFLACFrame = 0;
        ma_uint64 pcmFrameCountInThisFrame;
        if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
            return MA_FALSE;
        }
        ma_dr_flac__get_pcm_frame_range_of_current_flac_frame(pFlac, &firstPCMFrameInFLACFrame, &lastPCMFrameInFLACFrame);
        pcmFrameCountInThisFrame = (lastPCMFrameInFLACFrame - firstPCMFrameInFLACFrame) + 1;
        if (pcmFrameIndex == pFlac->totalPCMFrameCount && (runningPCMFrameCount + pcmFrameCountInThisFrame) == pFlac->totalPCMFrameCount) {
            ma_result result = ma_dr_flac__decode_flac_frame(pFlac);
            if (result == MA_SUCCESS) {
                pFlac->currentPCMFrame = pcmFrameIndex;
                pFlac->currentFLACFrame.pcmFramesRemaining = 0;
                return MA_TRUE;
            } else {
                return MA_FALSE;
            }
        }
        if (pcmFrameIndex < (runningPCMFrameCount + pcmFrameCountInThisFrame)) {
            ma_result result = ma_dr_flac__decode_flac_frame(pFlac);
            if (result == MA_SUCCESS) {
                ma_uint64 pcmFramesToDecode = (size_t)(pcmFrameIndex - runningPCMFrameCount);
                if (pcmFramesToDecode == 0) {
                    return MA_TRUE;
                }
                pFlac->currentPCMFrame = runningPCMFrameCount;
                return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, pcmFramesToDecode) == pcmFramesToDecode;
            } else {
                if (result == MA_CRC_MISMATCH) {
                    continue;
                } else {
                    return MA_FALSE;
                }
            }
        } else {
            ma_result result = ma_dr_flac__seek_to_next_flac_frame(pFlac);
            if (result == MA_SUCCESS) {
                runningPCMFrameCount += pcmFrameCountInThisFrame;
            } else {
                if (result == MA_CRC_MISMATCH) {
                    continue;
                } else {
                    return MA_FALSE;
                }
            }
        }
    }
}
static ma_bool32 ma_dr_flac__init_private__ogg(ma_dr_flac_init_info* pInit, ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, void* pUserData, void* pUserDataMD, ma_bool32 relaxed)
{
    ma_dr_flac_ogg_page_header header;
    ma_uint32 crc32 = MA_DR_FLAC_OGG_CAPTURE_PATTERN_CRC32;
    ma_uint32 bytesRead = 0;
    (void)relaxed;
    pInit->container = ma_dr_flac_container_ogg;
    pInit->oggFirstBytePos = 0;
    if (ma_dr_flac_ogg__read_page_header_after_capture_pattern(onRead, pUserData, &header, &bytesRead, &crc32) != MA_SUCCESS) {
        return MA_FALSE;
    }
    pInit->runningFilePos += bytesRead;
    for (;;) {
        int pageBodySize;
        if ((header.headerType & 0x02) == 0) {
            return MA_FALSE;
        }
        pageBodySize = ma_dr_flac_ogg__get_page_body_size(&header);
        if (pageBodySize == 51) {
            ma_uint32 bytesRemainingInPage = pageBodySize;
            ma_uint8 packetType;
            if (onRead(pUserData, &packetType, 1) != 1) {
                return MA_FALSE;
            }
            bytesRemainingInPage -= 1;
            if (packetType == 0x7F) {
                ma_uint8 sig[4];
                if (onRead(pUserData, sig, 4) != 4) {
                    return MA_FALSE;
                }
                bytesRemainingInPage -= 4;
                if (sig[0] == 'F' && sig[1] == 'L' && sig[2] == 'A' && sig[3] == 'C') {
                    ma_uint8 mappingVersion[2];
                    if (onRead(pUserData, mappingVersion, 2) != 2) {
                        return MA_FALSE;
                    }
                    if (mappingVersion[0] != 1) {
                        return MA_FALSE;
                    }
                    if (!onSeek(pUserData, 2, ma_dr_flac_seek_origin_current)) {
                        return MA_FALSE;
                    }
                    if (onRead(pUserData, sig, 4) != 4) {
                        return MA_FALSE;
                    }
                    if (sig[0] == 'f' && sig[1] == 'L' && sig[2] == 'a' && sig[3] == 'C') {
                        ma_dr_flac_streaminfo streaminfo;
                        ma_uint8 isLastBlock;
                        ma_uint8 blockType;
                        ma_uint32 blockSize;
                        if (!ma_dr_flac__read_and_decode_block_header(onRead, pUserData, &isLastBlock, &blockType, &blockSize)) {
                            return MA_FALSE;
                        }
                        if (blockType != MA_DR_FLAC_METADATA_BLOCK_TYPE_STREAMINFO || blockSize != 34) {
                            return MA_FALSE;
                        }
                        if (ma_dr_flac__read_streaminfo(onRead, pUserData, &streaminfo)) {
                            pInit->hasStreamInfoBlock      = MA_TRUE;
                            pInit->sampleRate              = streaminfo.sampleRate;
                            pInit->channels                = streaminfo.channels;
                            pInit->bitsPerSample           = streaminfo.bitsPerSample;
                            pInit->totalPCMFrameCount      = streaminfo.totalPCMFrameCount;
                            pInit->maxBlockSizeInPCMFrames = streaminfo.maxBlockSizeInPCMFrames;
                            pInit->hasMetadataBlocks       = !isLastBlock;
                            if (onMeta) {
                                ma_dr_flac_metadata metadata;
                                metadata.type = MA_DR_FLAC_METADATA_BLOCK_TYPE_STREAMINFO;
                                metadata.pRawData = NULL;
                                metadata.rawDataSize = 0;
                                metadata.data.streaminfo = streaminfo;
                                onMeta(pUserDataMD, &metadata);
                            }
                            pInit->runningFilePos  += pageBodySize;
                            pInit->oggFirstBytePos  = pInit->runningFilePos - 79;
                            pInit->oggSerial        = header.serialNumber;
                            pInit->oggBosHeader     = header;
                            break;
                        } else {
                            return MA_FALSE;
                        }
                    } else {
                        return MA_FALSE;
                    }
                } else {
                    if (!onSeek(pUserData, bytesRemainingInPage, ma_dr_flac_seek_origin_current)) {
                        return MA_FALSE;
                    }
                }
            } else {
                if (!onSeek(pUserData, bytesRemainingInPage, ma_dr_flac_seek_origin_current)) {
                    return MA_FALSE;
                }
            }
        } else {
            if (!onSeek(pUserData, pageBodySize, ma_dr_flac_seek_origin_current)) {
                return MA_FALSE;
            }
        }
        pInit->runningFilePos += pageBodySize;
        if (ma_dr_flac_ogg__read_page_header(onRead, pUserData, &header, &bytesRead, &crc32) != MA_SUCCESS) {
            return MA_FALSE;
        }
        pInit->runningFilePos += bytesRead;
    }
    pInit->hasMetadataBlocks = MA_TRUE;
    return MA_TRUE;
}
#endif
static ma_bool32 ma_dr_flac__init_private(ma_dr_flac_init_info* pInit, ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, ma_dr_flac_container container, void* pUserData, void* pUserDataMD)
{
    ma_bool32 relaxed;
    ma_uint8 id[4];
    if (pInit == NULL || onRead == NULL || onSeek == NULL) {
        return MA_FALSE;
    }
    MA_DR_FLAC_ZERO_MEMORY(pInit, sizeof(*pInit));
    pInit->onRead       = onRead;
    pInit->onSeek       = onSeek;
    pInit->onMeta       = onMeta;
    pInit->container    = container;
    pInit->pUserData    = pUserData;
    pInit->pUserDataMD  = pUserDataMD;
    pInit->bs.onRead    = onRead;
    pInit->bs.onSeek    = onSeek;
    pInit->bs.pUserData = pUserData;
    ma_dr_flac__reset_cache(&pInit->bs);
    relaxed = container != ma_dr_flac_container_unknown;
    for (;;) {
        if (onRead(pUserData, id, 4) != 4) {
            return MA_FALSE;
        }
        pInit->runningFilePos += 4;
        if (id[0] == 'I' && id[1] == 'D' && id[2] == '3') {
            ma_uint8 header[6];
            ma_uint8 flags;
            ma_uint32 headerSize;
            if (onRead(pUserData, header, 6) != 6) {
                return MA_FALSE;
            }
            pInit->runningFilePos += 6;
            flags = header[1];
            MA_DR_FLAC_COPY_MEMORY(&headerSize, header+2, 4);
            headerSize = ma_dr_flac__unsynchsafe_32(ma_dr_flac__be2host_32(headerSize));
            if (flags & 0x10) {
                headerSize += 10;
            }
            if (!onSeek(pUserData, headerSize, ma_dr_flac_seek_origin_current)) {
                return MA_FALSE;
            }
            pInit->runningFilePos += headerSize;
        } else {
            break;
        }
    }
    if (id[0] == 'f' && id[1] == 'L' && id[2] == 'a' && id[3] == 'C') {
        return ma_dr_flac__init_private__native(pInit, onRead, onSeek, onMeta, pUserData, pUserDataMD, relaxed);
    }
#ifndef MA_DR_FLAC_NO_OGG
    if (id[0] == 'O' && id[1] == 'g' && id[2] == 'g' && id[3] == 'S') {
        return ma_dr_flac__init_private__ogg(pInit, onRead, onSeek, onMeta, pUserData, pUserDataMD, relaxed);
    }
#endif
    if (relaxed) {
        if (container == ma_dr_flac_container_native) {
            return ma_dr_flac__init_private__native(pInit, onRead, onSeek, onMeta, pUserData, pUserDataMD, relaxed);
        }
#ifndef MA_DR_FLAC_NO_OGG
        if (container == ma_dr_flac_container_ogg) {
            return ma_dr_flac__init_private__ogg(pInit, onRead, onSeek, onMeta, pUserData, pUserDataMD, relaxed);
        }
#endif
    }
    return MA_FALSE;
}
static void ma_dr_flac__init_from_info(ma_dr_flac* pFlac, const ma_dr_flac_init_info* pInit)
{
    MA_DR_FLAC_ASSERT(pFlac != NULL);
    MA_DR_FLAC_ASSERT(pInit != NULL);
    MA_DR_FLAC_ZERO_MEMORY(pFlac, sizeof(*pFlac));
    pFlac->bs                      = pInit->bs;
    pFlac->onMeta                  = pInit->onMeta;
    pFlac->pUserDataMD             = pInit->pUserDataMD;
    pFlac->maxBlockSizeInPCMFrames = pInit->maxBlockSizeInPCMFrames;
    pFlac->sampleRate              = pInit->sampleRate;
    pFlac->channels                = (ma_uint8)pInit->channels;
    pFlac->bitsPerSample           = (ma_uint8)pInit->bitsPerSample;
    pFlac->totalPCMFrameCount      = pInit->totalPCMFrameCount;
    pFlac->container               = pInit->container;
}
static ma_dr_flac* ma_dr_flac_open_with_metadata_private(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, ma_dr_flac_container container, void* pUserData, void* pUserDataMD, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac_init_info init;
    ma_uint32 allocationSize;
    ma_uint32 wholeSIMDVectorCountPerChannel;
    ma_uint32 decodedSamplesAllocationSize;
#ifndef MA_DR_FLAC_NO_OGG
    ma_dr_flac_oggbs* pOggbs = NULL;
#endif
    ma_uint64 firstFramePos;
    ma_uint64 seektablePos;
    ma_uint32 seekpointCount;
    ma_allocation_callbacks allocationCallbacks;
    ma_dr_flac* pFlac;
    ma_dr_flac__init_cpu_caps();
    if (!ma_dr_flac__init_private(&init, onRead, onSeek, onMeta, container, pUserData, pUserDataMD)) {
        return NULL;
    }
    if (pAllocationCallbacks != NULL) {
        allocationCallbacks = *pAllocationCallbacks;
        if (allocationCallbacks.onFree == NULL || (allocationCallbacks.onMalloc == NULL && allocationCallbacks.onRealloc == NULL)) {
            return NULL;
        }
    } else {
        allocationCallbacks.pUserData = NULL;
        allocationCallbacks.onMalloc  = ma_dr_flac__malloc_default;
        allocationCallbacks.onRealloc = ma_dr_flac__realloc_default;
        allocationCallbacks.onFree    = ma_dr_flac__free_default;
    }
    allocationSize = sizeof(ma_dr_flac);
    if ((init.maxBlockSizeInPCMFrames % (MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE / sizeof(ma_int32))) == 0) {
        wholeSIMDVectorCountPerChannel = (init.maxBlockSizeInPCMFrames / (MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE / sizeof(ma_int32)));
    } else {
        wholeSIMDVectorCountPerChannel = (init.maxBlockSizeInPCMFrames / (MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE / sizeof(ma_int32))) + 1;
    }
    decodedSamplesAllocationSize = wholeSIMDVectorCountPerChannel * MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE * init.channels;
    allocationSize += decodedSamplesAllocationSize;
    allocationSize += MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE;
#ifndef MA_DR_FLAC_NO_OGG
    if (init.container == ma_dr_flac_container_ogg) {
        allocationSize += sizeof(ma_dr_flac_oggbs);
        pOggbs = (ma_dr_flac_oggbs*)ma_dr_flac__malloc_from_callbacks(sizeof(*pOggbs), &allocationCallbacks);
        if (pOggbs == NULL) {
            return NULL;
        }
        MA_DR_FLAC_ZERO_MEMORY(pOggbs, sizeof(*pOggbs));
        pOggbs->onRead = onRead;
        pOggbs->onSeek = onSeek;
        pOggbs->pUserData = pUserData;
        pOggbs->currentBytePos = init.oggFirstBytePos;
        pOggbs->firstBytePos = init.oggFirstBytePos;
        pOggbs->serialNumber = init.oggSerial;
        pOggbs->bosPageHeader = init.oggBosHeader;
        pOggbs->bytesRemainingInPage = 0;
    }
#endif
    firstFramePos  = 42;
    seektablePos   = 0;
    seekpointCount = 0;
    if (init.hasMetadataBlocks) {
        ma_dr_flac_read_proc onReadOverride = onRead;
        ma_dr_flac_seek_proc onSeekOverride = onSeek;
        void* pUserDataOverride = pUserData;
#ifndef MA_DR_FLAC_NO_OGG
        if (init.container == ma_dr_flac_container_ogg) {
            onReadOverride = ma_dr_flac__on_read_ogg;
            onSeekOverride = ma_dr_flac__on_seek_ogg;
            pUserDataOverride = (void*)pOggbs;
        }
#endif
        if (!ma_dr_flac__read_and_decode_metadata(onReadOverride, onSeekOverride, onMeta, pUserDataOverride, pUserDataMD, &firstFramePos, &seektablePos, &seekpointCount, &allocationCallbacks)) {
        #ifndef MA_DR_FLAC_NO_OGG
            ma_dr_flac__free_from_callbacks(pOggbs, &allocationCallbacks);
        #endif
            return NULL;
        }
        allocationSize += seekpointCount * sizeof(ma_dr_flac_seekpoint);
    }
    pFlac = (ma_dr_flac*)ma_dr_flac__malloc_from_callbacks(allocationSize, &allocationCallbacks);
    if (pFlac == NULL) {
    #ifndef MA_DR_FLAC_NO_OGG
        ma_dr_flac__free_from_callbacks(pOggbs, &allocationCallbacks);
    #endif
        return NULL;
    }
    ma_dr_flac__init_from_info(pFlac, &init);
    pFlac->allocationCallbacks = allocationCallbacks;
    pFlac->pDecodedSamples = (ma_int32*)ma_dr_flac_align((size_t)pFlac->pExtraData, MA_DR_FLAC_MAX_SIMD_VECTOR_SIZE);
#ifndef MA_DR_FLAC_NO_OGG
    if (init.container == ma_dr_flac_container_ogg) {
        ma_dr_flac_oggbs* pInternalOggbs = (ma_dr_flac_oggbs*)((ma_uint8*)pFlac->pDecodedSamples + decodedSamplesAllocationSize + (seekpointCount * sizeof(ma_dr_flac_seekpoint)));
        MA_DR_FLAC_COPY_MEMORY(pInternalOggbs, pOggbs, sizeof(*pOggbs));
        ma_dr_flac__free_from_callbacks(pOggbs, &allocationCallbacks);
        pOggbs = NULL;
        pFlac->bs.onRead = ma_dr_flac__on_read_ogg;
        pFlac->bs.onSeek = ma_dr_flac__on_seek_ogg;
        pFlac->bs.pUserData = (void*)pInternalOggbs;
        pFlac->_oggbs = (void*)pInternalOggbs;
    }
#endif
    pFlac->firstFLACFramePosInBytes = firstFramePos;
#ifndef MA_DR_FLAC_NO_OGG
    if (init.container == ma_dr_flac_container_ogg)
    {
        pFlac->pSeekpoints = NULL;
        pFlac->seekpointCount = 0;
    }
    else
#endif
    {
        if (seektablePos != 0) {
            pFlac->seekpointCount = seekpointCount;
            pFlac->pSeekpoints = (ma_dr_flac_seekpoint*)((ma_uint8*)pFlac->pDecodedSamples + decodedSamplesAllocationSize);
            MA_DR_FLAC_ASSERT(pFlac->bs.onSeek != NULL);
            MA_DR_FLAC_ASSERT(pFlac->bs.onRead != NULL);
            if (pFlac->bs.onSeek(pFlac->bs.pUserData, (int)seektablePos, ma_dr_flac_seek_origin_start)) {
                ma_uint32 iSeekpoint;
                for (iSeekpoint = 0; iSeekpoint < seekpointCount; iSeekpoint += 1) {
                    if (pFlac->bs.onRead(pFlac->bs.pUserData, pFlac->pSeekpoints + iSeekpoint, MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES) == MA_DR_FLAC_SEEKPOINT_SIZE_IN_BYTES) {
                        pFlac->pSeekpoints[iSeekpoint].firstPCMFrame   = ma_dr_flac__be2host_64(pFlac->pSeekpoints[iSeekpoint].firstPCMFrame);
                        pFlac->pSeekpoints[iSeekpoint].flacFrameOffset = ma_dr_flac__be2host_64(pFlac->pSeekpoints[iSeekpoint].flacFrameOffset);
                        pFlac->pSeekpoints[iSeekpoint].pcmFrameCount   = ma_dr_flac__be2host_16(pFlac->pSeekpoints[iSeekpoint].pcmFrameCount);
                    } else {
                        pFlac->pSeekpoints = NULL;
                        pFlac->seekpointCount = 0;
                        break;
                    }
                }
                if (!pFlac->bs.onSeek(pFlac->bs.pUserData, (int)pFlac->firstFLACFramePosInBytes, ma_dr_flac_seek_origin_start)) {
                    ma_dr_flac__free_from_callbacks(pFlac, &allocationCallbacks);
                    return NULL;
                }
            } else {
                pFlac->pSeekpoints = NULL;
                pFlac->seekpointCount = 0;
            }
        }
    }
    if (!init.hasStreamInfoBlock) {
        pFlac->currentFLACFrame.header = init.firstFrameHeader;
        for (;;) {
            ma_result result = ma_dr_flac__decode_flac_frame(pFlac);
            if (result == MA_SUCCESS) {
                break;
            } else {
                if (result == MA_CRC_MISMATCH) {
                    if (!ma_dr_flac__read_next_flac_frame_header(&pFlac->bs, pFlac->bitsPerSample, &pFlac->currentFLACFrame.header)) {
                        ma_dr_flac__free_from_callbacks(pFlac, &allocationCallbacks);
                        return NULL;
                    }
                    continue;
                } else {
                    ma_dr_flac__free_from_callbacks(pFlac, &allocationCallbacks);
                    return NULL;
                }
            }
        }
    }
    return pFlac;
}
#ifndef MA_DR_FLAC_NO_STDIO
#include <stdio.h>
#ifndef MA_DR_FLAC_NO_WCHAR
#include <wchar.h>
#endif
static size_t ma_dr_flac__on_read_stdio(void* pUserData, void* bufferOut, size_t bytesToRead)
{
    return fread(bufferOut, 1, bytesToRead, (FILE*)pUserData);
}
static ma_bool32 ma_dr_flac__on_seek_stdio(void* pUserData, int offset, ma_dr_flac_seek_origin origin)
{
    MA_DR_FLAC_ASSERT(offset >= 0);
    return fseek((FILE*)pUserData, offset, (origin == ma_dr_flac_seek_origin_current) ? SEEK_CUR : SEEK_SET) == 0;
}
MA_API ma_dr_flac* ma_dr_flac_open_file(const char* pFileName, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    FILE* pFile;
    if (ma_fopen(&pFile, pFileName, "rb") != MA_SUCCESS) {
        return NULL;
    }
    pFlac = ma_dr_flac_open(ma_dr_flac__on_read_stdio, ma_dr_flac__on_seek_stdio, (void*)pFile, pAllocationCallbacks);
    if (pFlac == NULL) {
        fclose(pFile);
        return NULL;
    }
    return pFlac;
}
#ifndef MA_DR_FLAC_NO_WCHAR
MA_API ma_dr_flac* ma_dr_flac_open_file_w(const wchar_t* pFileName, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    FILE* pFile;
    if (ma_wfopen(&pFile, pFileName, L"rb", pAllocationCallbacks) != MA_SUCCESS) {
        return NULL;
    }
    pFlac = ma_dr_flac_open(ma_dr_flac__on_read_stdio, ma_dr_flac__on_seek_stdio, (void*)pFile, pAllocationCallbacks);
    if (pFlac == NULL) {
        fclose(pFile);
        return NULL;
    }
    return pFlac;
}
#endif
MA_API ma_dr_flac* ma_dr_flac_open_file_with_metadata(const char* pFileName, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    FILE* pFile;
    if (ma_fopen(&pFile, pFileName, "rb") != MA_SUCCESS) {
        return NULL;
    }
    pFlac = ma_dr_flac_open_with_metadata_private(ma_dr_flac__on_read_stdio, ma_dr_flac__on_seek_stdio, onMeta, ma_dr_flac_container_unknown, (void*)pFile, pUserData, pAllocationCallbacks);
    if (pFlac == NULL) {
        fclose(pFile);
        return pFlac;
    }
    return pFlac;
}
#ifndef MA_DR_FLAC_NO_WCHAR
MA_API ma_dr_flac* ma_dr_flac_open_file_with_metadata_w(const wchar_t* pFileName, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    FILE* pFile;
    if (ma_wfopen(&pFile, pFileName, L"rb", pAllocationCallbacks) != MA_SUCCESS) {
        return NULL;
    }
    pFlac = ma_dr_flac_open_with_metadata_private(ma_dr_flac__on_read_stdio, ma_dr_flac__on_seek_stdio, onMeta, ma_dr_flac_container_unknown, (void*)pFile, pUserData, pAllocationCallbacks);
    if (pFlac == NULL) {
        fclose(pFile);
        return pFlac;
    }
    return pFlac;
}
#endif
#endif
static size_t ma_dr_flac__on_read_memory(void* pUserData, void* bufferOut, size_t bytesToRead)
{
    ma_dr_flac__memory_stream* memoryStream = (ma_dr_flac__memory_stream*)pUserData;
    size_t bytesRemaining;
    MA_DR_FLAC_ASSERT(memoryStream != NULL);
    MA_DR_FLAC_ASSERT(memoryStream->dataSize >= memoryStream->currentReadPos);
    bytesRemaining = memoryStream->dataSize - memoryStream->currentReadPos;
    if (bytesToRead > bytesRemaining) {
        bytesToRead = bytesRemaining;
    }
    if (bytesToRead > 0) {
        MA_DR_FLAC_COPY_MEMORY(bufferOut, memoryStream->data + memoryStream->currentReadPos, bytesToRead);
        memoryStream->currentReadPos += bytesToRead;
    }
    return bytesToRead;
}
static ma_bool32 ma_dr_flac__on_seek_memory(void* pUserData, int offset, ma_dr_flac_seek_origin origin)
{
    ma_dr_flac__memory_stream* memoryStream = (ma_dr_flac__memory_stream*)pUserData;
    MA_DR_FLAC_ASSERT(memoryStream != NULL);
    MA_DR_FLAC_ASSERT(offset >= 0);
    if (offset > (ma_int64)memoryStream->dataSize) {
        return MA_FALSE;
    }
    if (origin == ma_dr_flac_seek_origin_current) {
        if (memoryStream->currentReadPos + offset <= memoryStream->dataSize) {
            memoryStream->currentReadPos += offset;
        } else {
            return MA_FALSE;
        }
    } else {
        if ((ma_uint32)offset <= memoryStream->dataSize) {
            memoryStream->currentReadPos = offset;
        } else {
            return MA_FALSE;
        }
    }
    return MA_TRUE;
}
MA_API ma_dr_flac* ma_dr_flac_open_memory(const void* pData, size_t dataSize, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac__memory_stream memoryStream;
    ma_dr_flac* pFlac;
    memoryStream.data = (const ma_uint8*)pData;
    memoryStream.dataSize = dataSize;
    memoryStream.currentReadPos = 0;
    pFlac = ma_dr_flac_open(ma_dr_flac__on_read_memory, ma_dr_flac__on_seek_memory, &memoryStream, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    pFlac->memoryStream = memoryStream;
#ifndef MA_DR_FLAC_NO_OGG
    if (pFlac->container == ma_dr_flac_container_ogg)
    {
        ma_dr_flac_oggbs* oggbs = (ma_dr_flac_oggbs*)pFlac->_oggbs;
        oggbs->pUserData = &pFlac->memoryStream;
    }
    else
#endif
    {
        pFlac->bs.pUserData = &pFlac->memoryStream;
    }
    return pFlac;
}
MA_API ma_dr_flac* ma_dr_flac_open_memory_with_metadata(const void* pData, size_t dataSize, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac__memory_stream memoryStream;
    ma_dr_flac* pFlac;
    memoryStream.data = (const ma_uint8*)pData;
    memoryStream.dataSize = dataSize;
    memoryStream.currentReadPos = 0;
    pFlac = ma_dr_flac_open_with_metadata_private(ma_dr_flac__on_read_memory, ma_dr_flac__on_seek_memory, onMeta, ma_dr_flac_container_unknown, &memoryStream, pUserData, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    pFlac->memoryStream = memoryStream;
#ifndef MA_DR_FLAC_NO_OGG
    if (pFlac->container == ma_dr_flac_container_ogg)
    {
        ma_dr_flac_oggbs* oggbs = (ma_dr_flac_oggbs*)pFlac->_oggbs;
        oggbs->pUserData = &pFlac->memoryStream;
    }
    else
#endif
    {
        pFlac->bs.pUserData = &pFlac->memoryStream;
    }
    return pFlac;
}
MA_API ma_dr_flac* ma_dr_flac_open(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_flac_open_with_metadata_private(onRead, onSeek, NULL, ma_dr_flac_container_unknown, pUserData, pUserData, pAllocationCallbacks);
}
MA_API ma_dr_flac* ma_dr_flac_open_relaxed(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_container container, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_flac_open_with_metadata_private(onRead, onSeek, NULL, container, pUserData, pUserData, pAllocationCallbacks);
}
MA_API ma_dr_flac* ma_dr_flac_open_with_metadata(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_flac_open_with_metadata_private(onRead, onSeek, onMeta, ma_dr_flac_container_unknown, pUserData, pUserData, pAllocationCallbacks);
}
MA_API ma_dr_flac* ma_dr_flac_open_with_metadata_relaxed(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, ma_dr_flac_meta_proc onMeta, ma_dr_flac_container container, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    return ma_dr_flac_open_with_metadata_private(onRead, onSeek, onMeta, container, pUserData, pUserData, pAllocationCallbacks);
}
MA_API void ma_dr_flac_close(ma_dr_flac* pFlac)
{
    if (pFlac == NULL) {
        return;
    }
#ifndef MA_DR_FLAC_NO_STDIO
    if (pFlac->bs.onRead == ma_dr_flac__on_read_stdio) {
        fclose((FILE*)pFlac->bs.pUserData);
    }
#ifndef MA_DR_FLAC_NO_OGG
    if (pFlac->container == ma_dr_flac_container_ogg) {
        ma_dr_flac_oggbs* oggbs = (ma_dr_flac_oggbs*)pFlac->_oggbs;
        MA_DR_FLAC_ASSERT(pFlac->bs.onRead == ma_dr_flac__on_read_ogg);
        if (oggbs->onRead == ma_dr_flac__on_read_stdio) {
            fclose((FILE*)oggbs->pUserData);
        }
    }
#endif
#endif
    ma_dr_flac__free_from_callbacks(pFlac, &pFlac->allocationCallbacks);
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_left_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    for (i = 0; i < frameCount; ++i) {
        ma_uint32 left  = (ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
        ma_uint32 side  = (ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_left_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 left0 = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 left1 = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 left2 = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 left3 = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 side0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 side1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 side2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 side3 = pInputSamples1U32[i*4+3] << shift1;
        ma_uint32 right0 = left0 - side0;
        ma_uint32 right1 = left1 - side1;
        ma_uint32 right2 = left2 - side2;
        ma_uint32 right3 = left3 - side3;
        pOutputSamples[i*8+0] = (ma_int32)left0;
        pOutputSamples[i*8+1] = (ma_int32)right0;
        pOutputSamples[i*8+2] = (ma_int32)left1;
        pOutputSamples[i*8+3] = (ma_int32)right1;
        pOutputSamples[i*8+4] = (ma_int32)left2;
        pOutputSamples[i*8+5] = (ma_int32)right2;
        pOutputSamples[i*8+6] = (ma_int32)left3;
        pOutputSamples[i*8+7] = (ma_int32)right3;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_left_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    for (i = 0; i < frameCount4; ++i) {
        __m128i left  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        __m128i right = _mm_sub_epi32(left, side);
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 0), _mm_unpacklo_epi32(left, right));
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 4), _mm_unpackhi_epi32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_left_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    int32x4_t shift0_4;
    int32x4_t shift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    shift0_4 = vdupq_n_s32(shift0);
    shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        uint32x4_t left;
        uint32x4_t side;
        uint32x4_t right;
        left  = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4);
        side  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4);
        right = vsubq_u32(left, side);
        ma_dr_flac__vst2q_u32((ma_uint32*)pOutputSamples + i*8, vzipq_u32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_left_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_left_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_left_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s32__decode_left_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s32__decode_left_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_right_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    for (i = 0; i < frameCount; ++i) {
        ma_uint32 side  = (ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
        ma_uint32 right = (ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_right_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 side0  = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 side1  = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 side2  = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 side3  = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 right0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 right1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 right2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 right3 = pInputSamples1U32[i*4+3] << shift1;
        ma_uint32 left0 = right0 + side0;
        ma_uint32 left1 = right1 + side1;
        ma_uint32 left2 = right2 + side2;
        ma_uint32 left3 = right3 + side3;
        pOutputSamples[i*8+0] = (ma_int32)left0;
        pOutputSamples[i*8+1] = (ma_int32)right0;
        pOutputSamples[i*8+2] = (ma_int32)left1;
        pOutputSamples[i*8+3] = (ma_int32)right1;
        pOutputSamples[i*8+4] = (ma_int32)left2;
        pOutputSamples[i*8+5] = (ma_int32)right2;
        pOutputSamples[i*8+6] = (ma_int32)left3;
        pOutputSamples[i*8+7] = (ma_int32)right3;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_right_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    for (i = 0; i < frameCount4; ++i) {
        __m128i side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i right = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        __m128i left  = _mm_add_epi32(right, side);
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 0), _mm_unpacklo_epi32(left, right));
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 4), _mm_unpackhi_epi32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_right_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    int32x4_t shift0_4;
    int32x4_t shift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    shift0_4 = vdupq_n_s32(shift0);
    shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        uint32x4_t side;
        uint32x4_t right;
        uint32x4_t left;
        side  = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4);
        right = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4);
        left  = vaddq_u32(right, side);
        ma_dr_flac__vst2q_u32((ma_uint32*)pOutputSamples + i*8, vzipq_u32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left;
        pOutputSamples[i*2+1] = (ma_int32)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_right_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_right_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_right_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s32__decode_right_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s32__decode_right_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_mid_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    for (ma_uint64 i = 0; i < frameCount; ++i) {
        ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
        ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
        mid = (mid << 1) | (side & 0x01);
        pOutputSamples[i*2+0] = (ma_int32)((ma_uint32)((ma_int32)(mid + side) >> 1) << unusedBitsPerSample);
        pOutputSamples[i*2+1] = (ma_int32)((ma_uint32)((ma_int32)(mid - side) >> 1) << unusedBitsPerSample);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_mid_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_int32 shift = unusedBitsPerSample;
    if (shift > 0) {
        shift -= 1;
        for (i = 0; i < frameCount4; ++i) {
            ma_uint32 temp0L;
            ma_uint32 temp1L;
            ma_uint32 temp2L;
            ma_uint32 temp3L;
            ma_uint32 temp0R;
            ma_uint32 temp1R;
            ma_uint32 temp2R;
            ma_uint32 temp3R;
            ma_uint32 mid0  = pInputSamples0U32[i*4+0] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid1  = pInputSamples0U32[i*4+1] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid2  = pInputSamples0U32[i*4+2] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid3  = pInputSamples0U32[i*4+3] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side0 = pInputSamples1U32[i*4+0] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side1 = pInputSamples1U32[i*4+1] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side2 = pInputSamples1U32[i*4+2] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side3 = pInputSamples1U32[i*4+3] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid0 = (mid0 << 1) | (side0 & 0x01);
            mid1 = (mid1 << 1) | (side1 & 0x01);
            mid2 = (mid2 << 1) | (side2 & 0x01);
            mid3 = (mid3 << 1) | (side3 & 0x01);
            temp0L = (mid0 + side0) << shift;
            temp1L = (mid1 + side1) << shift;
            temp2L = (mid2 + side2) << shift;
            temp3L = (mid3 + side3) << shift;
            temp0R = (mid0 - side0) << shift;
            temp1R = (mid1 - side1) << shift;
            temp2R = (mid2 - side2) << shift;
            temp3R = (mid3 - side3) << shift;
            pOutputSamples[i*8+0] = (ma_int32)temp0L;
            pOutputSamples[i*8+1] = (ma_int32)temp0R;
            pOutputSamples[i*8+2] = (ma_int32)temp1L;
            pOutputSamples[i*8+3] = (ma_int32)temp1R;
            pOutputSamples[i*8+4] = (ma_int32)temp2L;
            pOutputSamples[i*8+5] = (ma_int32)temp2R;
            pOutputSamples[i*8+6] = (ma_int32)temp3L;
            pOutputSamples[i*8+7] = (ma_int32)temp3R;
        }
    } else {
        for (i = 0; i < frameCount4; ++i) {
            ma_uint32 temp0L;
            ma_uint32 temp1L;
            ma_uint32 temp2L;
            ma_uint32 temp3L;
            ma_uint32 temp0R;
            ma_uint32 temp1R;
            ma_uint32 temp2R;
            ma_uint32 temp3R;
            ma_uint32 mid0  = pInputSamples0U32[i*4+0] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid1  = pInputSamples0U32[i*4+1] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid2  = pInputSamples0U32[i*4+2] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid3  = pInputSamples0U32[i*4+3] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side0 = pInputSamples1U32[i*4+0] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side1 = pInputSamples1U32[i*4+1] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side2 = pInputSamples1U32[i*4+2] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side3 = pInputSamples1U32[i*4+3] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid0 = (mid0 << 1) | (side0 & 0x01);
            mid1 = (mid1 << 1) | (side1 & 0x01);
            mid2 = (mid2 << 1) | (side2 & 0x01);
            mid3 = (mid3 << 1) | (side3 & 0x01);
            temp0L = (ma_uint32)((ma_int32)(mid0 + side0) >> 1);
            temp1L = (ma_uint32)((ma_int32)(mid1 + side1) >> 1);
            temp2L = (ma_uint32)((ma_int32)(mid2 + side2) >> 1);
            temp3L = (ma_uint32)((ma_int32)(mid3 + side3) >> 1);
            temp0R = (ma_uint32)((ma_int32)(mid0 - side0) >> 1);
            temp1R = (ma_uint32)((ma_int32)(mid1 - side1) >> 1);
            temp2R = (ma_uint32)((ma_int32)(mid2 - side2) >> 1);
            temp3R = (ma_uint32)((ma_int32)(mid3 - side3) >> 1);
            pOutputSamples[i*8+0] = (ma_int32)temp0L;
            pOutputSamples[i*8+1] = (ma_int32)temp0R;
            pOutputSamples[i*8+2] = (ma_int32)temp1L;
            pOutputSamples[i*8+3] = (ma_int32)temp1R;
            pOutputSamples[i*8+4] = (ma_int32)temp2L;
            pOutputSamples[i*8+5] = (ma_int32)temp2R;
            pOutputSamples[i*8+6] = (ma_int32)temp3L;
            pOutputSamples[i*8+7] = (ma_int32)temp3R;
        }
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
        ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
        mid = (mid << 1) | (side & 0x01);
        pOutputSamples[i*2+0] = (ma_int32)((ma_uint32)((ma_int32)(mid + side) >> 1) << unusedBitsPerSample);
        pOutputSamples[i*2+1] = (ma_int32)((ma_uint32)((ma_int32)(mid - side) >> 1) << unusedBitsPerSample);
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_mid_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_int32 shift = unusedBitsPerSample;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    if (shift == 0) {
        for (i = 0; i < frameCount4; ++i) {
            __m128i mid;
            __m128i side;
            __m128i left;
            __m128i right;
            mid   = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
            side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
            mid   = _mm_or_si128(_mm_slli_epi32(mid, 1), _mm_and_si128(side, _mm_set1_epi32(0x01)));
            left  = _mm_srai_epi32(_mm_add_epi32(mid, side), 1);
            right = _mm_srai_epi32(_mm_sub_epi32(mid, side), 1);
            _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 0), _mm_unpacklo_epi32(left, right));
            _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 4), _mm_unpackhi_epi32(left, right));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int32)(mid + side) >> 1;
            pOutputSamples[i*2+1] = (ma_int32)(mid - side) >> 1;
        }
    } else {
        shift -= 1;
        for (i = 0; i < frameCount4; ++i) {
            __m128i mid;
            __m128i side;
            __m128i left;
            __m128i right;
            mid   = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
            side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
            mid   = _mm_or_si128(_mm_slli_epi32(mid, 1), _mm_and_si128(side, _mm_set1_epi32(0x01)));
            left  = _mm_slli_epi32(_mm_add_epi32(mid, side), shift);
            right = _mm_slli_epi32(_mm_sub_epi32(mid, side), shift);
            _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 0), _mm_unpacklo_epi32(left, right));
            _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 4), _mm_unpackhi_epi32(left, right));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int32)((mid + side) << shift);
            pOutputSamples[i*2+1] = (ma_int32)((mid - side) << shift);
        }
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_mid_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_int32 shift = unusedBitsPerSample;
    int32x4_t  wbpsShift0_4;
    int32x4_t  wbpsShift1_4;
    uint32x4_t one4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    wbpsShift0_4 = vdupq_n_s32(pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
    wbpsShift1_4 = vdupq_n_s32(pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
    one4         = vdupq_n_u32(1);
    if (shift == 0) {
        for (i = 0; i < frameCount4; ++i) {
            uint32x4_t mid;
            uint32x4_t side;
            int32x4_t left;
            int32x4_t right;
            mid   = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), wbpsShift0_4);
            side  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), wbpsShift1_4);
            mid   = vorrq_u32(vshlq_n_u32(mid, 1), vandq_u32(side, one4));
            left  = vshrq_n_s32(vreinterpretq_s32_u32(vaddq_u32(mid, side)), 1);
            right = vshrq_n_s32(vreinterpretq_s32_u32(vsubq_u32(mid, side)), 1);
            ma_dr_flac__vst2q_s32(pOutputSamples + i*8, vzipq_s32(left, right));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int32)(mid + side) >> 1;
            pOutputSamples[i*2+1] = (ma_int32)(mid - side) >> 1;
        }
    } else {
        int32x4_t shift4;
        shift -= 1;
        shift4 = vdupq_n_s32(shift);
        for (i = 0; i < frameCount4; ++i) {
            uint32x4_t mid;
            uint32x4_t side;
            int32x4_t left;
            int32x4_t right;
            mid   = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), wbpsShift0_4);
            side  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), wbpsShift1_4);
            mid   = vorrq_u32(vshlq_n_u32(mid, 1), vandq_u32(side, one4));
            left  = vreinterpretq_s32_u32(vshlq_u32(vaddq_u32(mid, side), shift4));
            right = vreinterpretq_s32_u32(vshlq_u32(vsubq_u32(mid, side), shift4));
            ma_dr_flac__vst2q_s32(pOutputSamples + i*8, vzipq_s32(left, right));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int32)((mid + side) << shift);
            pOutputSamples[i*2+1] = (ma_int32)((mid - side) << shift);
        }
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_mid_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_mid_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_mid_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s32__decode_mid_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s32__decode_mid_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    for (ma_uint64 i = 0; i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)((ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample));
        pOutputSamples[i*2+1] = (ma_int32)((ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample));
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 tempL0 = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 tempL1 = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 tempL2 = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 tempL3 = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 tempR0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 tempR1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 tempR2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 tempR3 = pInputSamples1U32[i*4+3] << shift1;
        pOutputSamples[i*8+0] = (ma_int32)tempL0;
        pOutputSamples[i*8+1] = (ma_int32)tempR0;
        pOutputSamples[i*8+2] = (ma_int32)tempL1;
        pOutputSamples[i*8+3] = (ma_int32)tempR1;
        pOutputSamples[i*8+4] = (ma_int32)tempL2;
        pOutputSamples[i*8+5] = (ma_int32)tempR2;
        pOutputSamples[i*8+6] = (ma_int32)tempL3;
        pOutputSamples[i*8+7] = (ma_int32)tempR3;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)(pInputSamples0U32[i] << shift0);
        pOutputSamples[i*2+1] = (ma_int32)(pInputSamples1U32[i] << shift1);
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        __m128i left  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i right = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 0), _mm_unpacklo_epi32(left, right));
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8 + 4), _mm_unpackhi_epi32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)(pInputSamples0U32[i] << shift0);
        pOutputSamples[i*2+1] = (ma_int32)(pInputSamples1U32[i] << shift1);
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    int32x4_t shift4_0 = vdupq_n_s32(shift0);
    int32x4_t shift4_1 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        int32x4_t left;
        int32x4_t right;
        left  = vreinterpretq_s32_u32(vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift4_0));
        right = vreinterpretq_s32_u32(vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift4_1));
        ma_dr_flac__vst2q_s32(pOutputSamples + i*8, vzipq_s32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)(pInputSamples0U32[i] << shift0);
        pOutputSamples[i*2+1] = (ma_int32)(pInputSamples1U32[i] << shift1);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int32* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
MA_API ma_uint64 ma_dr_flac_read_pcm_frames_s32(ma_dr_flac* pFlac, ma_uint64 framesToRead, ma_int32* pBufferOut)
{
    ma_uint64 framesRead;
    ma_uint32 unusedBitsPerSample;
    if (pFlac == NULL || framesToRead == 0) {
        return 0;
    }
    if (pBufferOut == NULL) {
        return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, framesToRead);
    }
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 32);
    unusedBitsPerSample = 32 - pFlac->bitsPerSample;
    framesRead = 0;
    while (framesToRead > 0) {
        if (pFlac->currentFLACFrame.pcmFramesRemaining == 0) {
            if (!ma_dr_flac__read_and_decode_next_flac_frame(pFlac)) {
                break;
            }
        } else {
            unsigned int channelCount = ma_dr_flac__get_channel_count_from_channel_assignment(pFlac->currentFLACFrame.header.channelAssignment);
            ma_uint64 iFirstPCMFrame = pFlac->currentFLACFrame.header.blockSizeInPCMFrames - pFlac->currentFLACFrame.pcmFramesRemaining;
            ma_uint64 frameCountThisIteration = framesToRead;
            if (frameCountThisIteration > pFlac->currentFLACFrame.pcmFramesRemaining) {
                frameCountThisIteration = pFlac->currentFLACFrame.pcmFramesRemaining;
            }
            if (channelCount == 2) {
                const ma_int32* pDecodedSamples0 = pFlac->currentFLACFrame.subframes[0].pSamplesS32 + iFirstPCMFrame;
                const ma_int32* pDecodedSamples1 = pFlac->currentFLACFrame.subframes[1].pSamplesS32 + iFirstPCMFrame;
                switch (pFlac->currentFLACFrame.header.channelAssignment)
                {
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_s32__decode_left_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_s32__decode_right_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_MID_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_s32__decode_mid_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_INDEPENDENT:
                    default:
                    {
                        ma_dr_flac_read_pcm_frames_s32__decode_independent_stereo(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                }
            } else {
                ma_uint64 i;
                for (i = 0; i < frameCountThisIteration; ++i) {
                    unsigned int j;
                    for (j = 0; j < channelCount; ++j) {
                        pBufferOut[(i*channelCount)+j] = (ma_int32)((ma_uint32)(pFlac->currentFLACFrame.subframes[j].pSamplesS32[iFirstPCMFrame + i]) << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[j].wastedBitsPerSample));
                    }
                }
            }
            framesRead                += frameCountThisIteration;
            pBufferOut                += frameCountThisIteration * channelCount;
            framesToRead              -= frameCountThisIteration;
            pFlac->currentPCMFrame    += frameCountThisIteration;
            pFlac->currentFLACFrame.pcmFramesRemaining -= (ma_uint32)frameCountThisIteration;
        }
    }
    return framesRead;
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_left_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    for (i = 0; i < frameCount; ++i) {
        ma_uint32 left  = (ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
        ma_uint32 side  = (ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
        ma_uint32 right = left - side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_left_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 left0 = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 left1 = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 left2 = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 left3 = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 side0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 side1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 side2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 side3 = pInputSamples1U32[i*4+3] << shift1;
        ma_uint32 right0 = left0 - side0;
        ma_uint32 right1 = left1 - side1;
        ma_uint32 right2 = left2 - side2;
        ma_uint32 right3 = left3 - side3;
        left0  >>= 16;
        left1  >>= 16;
        left2  >>= 16;
        left3  >>= 16;
        right0 >>= 16;
        right1 >>= 16;
        right2 >>= 16;
        right3 >>= 16;
        pOutputSamples[i*8+0] = (ma_int16)left0;
        pOutputSamples[i*8+1] = (ma_int16)right0;
        pOutputSamples[i*8+2] = (ma_int16)left1;
        pOutputSamples[i*8+3] = (ma_int16)right1;
        pOutputSamples[i*8+4] = (ma_int16)left2;
        pOutputSamples[i*8+5] = (ma_int16)right2;
        pOutputSamples[i*8+6] = (ma_int16)left3;
        pOutputSamples[i*8+7] = (ma_int16)right3;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_left_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    for (i = 0; i < frameCount4; ++i) {
        __m128i left  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        __m128i right = _mm_sub_epi32(left, side);
        left  = _mm_srai_epi32(left,  16);
        right = _mm_srai_epi32(right, 16);
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8), ma_dr_flac__mm_packs_interleaved_epi32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_left_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    int32x4_t shift0_4;
    int32x4_t shift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    shift0_4 = vdupq_n_s32(shift0);
    shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        uint32x4_t left;
        uint32x4_t side;
        uint32x4_t right;
        left  = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4);
        side  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4);
        right = vsubq_u32(left, side);
        left  = vshrq_n_u32(left,  16);
        right = vshrq_n_u32(right, 16);
        ma_dr_flac__vst2q_u16((ma_uint16*)pOutputSamples + i*8, vzip_u16(vmovn_u32(left), vmovn_u32(right)));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_left_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_left_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_left_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s16__decode_left_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s16__decode_left_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_right_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    for (i = 0; i < frameCount; ++i) {
        ma_uint32 side  = (ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
        ma_uint32 right = (ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
        ma_uint32 left  = right + side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_right_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 side0  = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 side1  = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 side2  = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 side3  = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 right0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 right1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 right2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 right3 = pInputSamples1U32[i*4+3] << shift1;
        ma_uint32 left0 = right0 + side0;
        ma_uint32 left1 = right1 + side1;
        ma_uint32 left2 = right2 + side2;
        ma_uint32 left3 = right3 + side3;
        left0  >>= 16;
        left1  >>= 16;
        left2  >>= 16;
        left3  >>= 16;
        right0 >>= 16;
        right1 >>= 16;
        right2 >>= 16;
        right3 >>= 16;
        pOutputSamples[i*8+0] = (ma_int16)left0;
        pOutputSamples[i*8+1] = (ma_int16)right0;
        pOutputSamples[i*8+2] = (ma_int16)left1;
        pOutputSamples[i*8+3] = (ma_int16)right1;
        pOutputSamples[i*8+4] = (ma_int16)left2;
        pOutputSamples[i*8+5] = (ma_int16)right2;
        pOutputSamples[i*8+6] = (ma_int16)left3;
        pOutputSamples[i*8+7] = (ma_int16)right3;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_right_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    for (i = 0; i < frameCount4; ++i) {
        __m128i side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i right = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        __m128i left  = _mm_add_epi32(right, side);
        left  = _mm_srai_epi32(left,  16);
        right = _mm_srai_epi32(right, 16);
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8), ma_dr_flac__mm_packs_interleaved_epi32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_right_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    int32x4_t shift0_4;
    int32x4_t shift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    shift0_4 = vdupq_n_s32(shift0);
    shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        uint32x4_t side;
        uint32x4_t right;
        uint32x4_t left;
        side  = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4);
        right = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4);
        left  = vaddq_u32(right, side);
        left  = vshrq_n_u32(left,  16);
        right = vshrq_n_u32(right, 16);
        ma_dr_flac__vst2q_u16((ma_uint16*)pOutputSamples + i*8, vzip_u16(vmovn_u32(left), vmovn_u32(right)));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        left  >>= 16;
        right >>= 16;
        pOutputSamples[i*2+0] = (ma_int16)left;
        pOutputSamples[i*2+1] = (ma_int16)right;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_right_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_right_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_right_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s16__decode_right_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s16__decode_right_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_mid_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    for (ma_uint64 i = 0; i < frameCount; ++i) {
        ma_uint32 mid  = (ma_uint32)pInputSamples0[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
        ma_uint32 side = (ma_uint32)pInputSamples1[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
        mid = (mid << 1) | (side & 0x01);
        pOutputSamples[i*2+0] = (ma_int16)(((ma_uint32)((ma_int32)(mid + side) >> 1) << unusedBitsPerSample) >> 16);
        pOutputSamples[i*2+1] = (ma_int16)(((ma_uint32)((ma_int32)(mid - side) >> 1) << unusedBitsPerSample) >> 16);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_mid_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift = unusedBitsPerSample;
    if (shift > 0) {
        shift -= 1;
        for (i = 0; i < frameCount4; ++i) {
            ma_uint32 temp0L;
            ma_uint32 temp1L;
            ma_uint32 temp2L;
            ma_uint32 temp3L;
            ma_uint32 temp0R;
            ma_uint32 temp1R;
            ma_uint32 temp2R;
            ma_uint32 temp3R;
            ma_uint32 mid0  = pInputSamples0U32[i*4+0] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid1  = pInputSamples0U32[i*4+1] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid2  = pInputSamples0U32[i*4+2] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid3  = pInputSamples0U32[i*4+3] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side0 = pInputSamples1U32[i*4+0] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side1 = pInputSamples1U32[i*4+1] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side2 = pInputSamples1U32[i*4+2] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side3 = pInputSamples1U32[i*4+3] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid0 = (mid0 << 1) | (side0 & 0x01);
            mid1 = (mid1 << 1) | (side1 & 0x01);
            mid2 = (mid2 << 1) | (side2 & 0x01);
            mid3 = (mid3 << 1) | (side3 & 0x01);
            temp0L = (mid0 + side0) << shift;
            temp1L = (mid1 + side1) << shift;
            temp2L = (mid2 + side2) << shift;
            temp3L = (mid3 + side3) << shift;
            temp0R = (mid0 - side0) << shift;
            temp1R = (mid1 - side1) << shift;
            temp2R = (mid2 - side2) << shift;
            temp3R = (mid3 - side3) << shift;
            temp0L >>= 16;
            temp1L >>= 16;
            temp2L >>= 16;
            temp3L >>= 16;
            temp0R >>= 16;
            temp1R >>= 16;
            temp2R >>= 16;
            temp3R >>= 16;
            pOutputSamples[i*8+0] = (ma_int16)temp0L;
            pOutputSamples[i*8+1] = (ma_int16)temp0R;
            pOutputSamples[i*8+2] = (ma_int16)temp1L;
            pOutputSamples[i*8+3] = (ma_int16)temp1R;
            pOutputSamples[i*8+4] = (ma_int16)temp2L;
            pOutputSamples[i*8+5] = (ma_int16)temp2R;
            pOutputSamples[i*8+6] = (ma_int16)temp3L;
            pOutputSamples[i*8+7] = (ma_int16)temp3R;
        }
    } else {
        for (i = 0; i < frameCount4; ++i) {
            ma_uint32 temp0L;
            ma_uint32 temp1L;
            ma_uint32 temp2L;
            ma_uint32 temp3L;
            ma_uint32 temp0R;
            ma_uint32 temp1R;
            ma_uint32 temp2R;
            ma_uint32 temp3R;
            ma_uint32 mid0  = pInputSamples0U32[i*4+0] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid1  = pInputSamples0U32[i*4+1] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid2  = pInputSamples0U32[i*4+2] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid3  = pInputSamples0U32[i*4+3] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side0 = pInputSamples1U32[i*4+0] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side1 = pInputSamples1U32[i*4+1] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side2 = pInputSamples1U32[i*4+2] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side3 = pInputSamples1U32[i*4+3] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid0 = (mid0 << 1) | (side0 & 0x01);
            mid1 = (mid1 << 1) | (side1 & 0x01);
            mid2 = (mid2 << 1) | (side2 & 0x01);
            mid3 = (mid3 << 1) | (side3 & 0x01);
            temp0L = ((ma_int32)(mid0 + side0) >> 1);
            temp1L = ((ma_int32)(mid1 + side1) >> 1);
            temp2L = ((ma_int32)(mid2 + side2) >> 1);
            temp3L = ((ma_int32)(mid3 + side3) >> 1);
            temp0R = ((ma_int32)(mid0 - side0) >> 1);
            temp1R = ((ma_int32)(mid1 - side1) >> 1);
            temp2R = ((ma_int32)(mid2 - side2) >> 1);
            temp3R = ((ma_int32)(mid3 - side3) >> 1);
            temp0L >>= 16;
            temp1L >>= 16;
            temp2L >>= 16;
            temp3L >>= 16;
            temp0R >>= 16;
            temp1R >>= 16;
            temp2R >>= 16;
            temp3R >>= 16;
            pOutputSamples[i*8+0] = (ma_int16)temp0L;
            pOutputSamples[i*8+1] = (ma_int16)temp0R;
            pOutputSamples[i*8+2] = (ma_int16)temp1L;
            pOutputSamples[i*8+3] = (ma_int16)temp1R;
            pOutputSamples[i*8+4] = (ma_int16)temp2L;
            pOutputSamples[i*8+5] = (ma_int16)temp2R;
            pOutputSamples[i*8+6] = (ma_int16)temp3L;
            pOutputSamples[i*8+7] = (ma_int16)temp3R;
        }
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
        ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
        mid = (mid << 1) | (side & 0x01);
        pOutputSamples[i*2+0] = (ma_int16)(((ma_uint32)((ma_int32)(mid + side) >> 1) << unusedBitsPerSample) >> 16);
        pOutputSamples[i*2+1] = (ma_int16)(((ma_uint32)((ma_int32)(mid - side) >> 1) << unusedBitsPerSample) >> 16);
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_mid_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift = unusedBitsPerSample;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    if (shift == 0) {
        for (i = 0; i < frameCount4; ++i) {
            __m128i mid;
            __m128i side;
            __m128i left;
            __m128i right;
            mid   = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
            side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
            mid   = _mm_or_si128(_mm_slli_epi32(mid, 1), _mm_and_si128(side, _mm_set1_epi32(0x01)));
            left  = _mm_srai_epi32(_mm_add_epi32(mid, side), 1);
            right = _mm_srai_epi32(_mm_sub_epi32(mid, side), 1);
            left  = _mm_srai_epi32(left,  16);
            right = _mm_srai_epi32(right, 16);
            _mm_storeu_si128((__m128i*)(pOutputSamples + i*8), ma_dr_flac__mm_packs_interleaved_epi32(left, right));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int16)(((ma_int32)(mid + side) >> 1) >> 16);
            pOutputSamples[i*2+1] = (ma_int16)(((ma_int32)(mid - side) >> 1) >> 16);
        }
    } else {
        shift -= 1;
        for (i = 0; i < frameCount4; ++i) {
            __m128i mid;
            __m128i side;
            __m128i left;
            __m128i right;
            mid   = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
            side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
            mid   = _mm_or_si128(_mm_slli_epi32(mid, 1), _mm_and_si128(side, _mm_set1_epi32(0x01)));
            left  = _mm_slli_epi32(_mm_add_epi32(mid, side), shift);
            right = _mm_slli_epi32(_mm_sub_epi32(mid, side), shift);
            left  = _mm_srai_epi32(left,  16);
            right = _mm_srai_epi32(right, 16);
            _mm_storeu_si128((__m128i*)(pOutputSamples + i*8), ma_dr_flac__mm_packs_interleaved_epi32(left, right));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int16)(((mid + side) << shift) >> 16);
            pOutputSamples[i*2+1] = (ma_int16)(((mid - side) << shift) >> 16);
        }
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_mid_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift = unusedBitsPerSample;
    int32x4_t wbpsShift0_4;
    int32x4_t wbpsShift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    wbpsShift0_4 = vdupq_n_s32(pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
    wbpsShift1_4 = vdupq_n_s32(pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
    if (shift == 0) {
        for (i = 0; i < frameCount4; ++i) {
            uint32x4_t mid;
            uint32x4_t side;
            int32x4_t left;
            int32x4_t right;
            mid   = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), wbpsShift0_4);
            side  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), wbpsShift1_4);
            mid   = vorrq_u32(vshlq_n_u32(mid, 1), vandq_u32(side, vdupq_n_u32(1)));
            left  = vshrq_n_s32(vreinterpretq_s32_u32(vaddq_u32(mid, side)), 1);
            right = vshrq_n_s32(vreinterpretq_s32_u32(vsubq_u32(mid, side)), 1);
            left  = vshrq_n_s32(left,  16);
            right = vshrq_n_s32(right, 16);
            ma_dr_flac__vst2q_s16(pOutputSamples + i*8, vzip_s16(vmovn_s32(left), vmovn_s32(right)));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int16)(((ma_int32)(mid + side) >> 1) >> 16);
            pOutputSamples[i*2+1] = (ma_int16)(((ma_int32)(mid - side) >> 1) >> 16);
        }
    } else {
        int32x4_t shift4;
        shift -= 1;
        shift4 = vdupq_n_s32(shift);
        for (i = 0; i < frameCount4; ++i) {
            uint32x4_t mid;
            uint32x4_t side;
            int32x4_t left;
            int32x4_t right;
            mid   = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), wbpsShift0_4);
            side  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), wbpsShift1_4);
            mid   = vorrq_u32(vshlq_n_u32(mid, 1), vandq_u32(side, vdupq_n_u32(1)));
            left  = vreinterpretq_s32_u32(vshlq_u32(vaddq_u32(mid, side), shift4));
            right = vreinterpretq_s32_u32(vshlq_u32(vsubq_u32(mid, side), shift4));
            left  = vshrq_n_s32(left,  16);
            right = vshrq_n_s32(right, 16);
            ma_dr_flac__vst2q_s16(pOutputSamples + i*8, vzip_s16(vmovn_s32(left), vmovn_s32(right)));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int16)(((mid + side) << shift) >> 16);
            pOutputSamples[i*2+1] = (ma_int16)(((mid - side) << shift) >> 16);
        }
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_mid_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_mid_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_mid_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s16__decode_mid_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s16__decode_mid_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    for (ma_uint64 i = 0; i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int16)((ma_int32)((ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample)) >> 16);
        pOutputSamples[i*2+1] = (ma_int16)((ma_int32)((ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample)) >> 16);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 tempL0 = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 tempL1 = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 tempL2 = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 tempL3 = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 tempR0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 tempR1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 tempR2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 tempR3 = pInputSamples1U32[i*4+3] << shift1;
        tempL0 >>= 16;
        tempL1 >>= 16;
        tempL2 >>= 16;
        tempL3 >>= 16;
        tempR0 >>= 16;
        tempR1 >>= 16;
        tempR2 >>= 16;
        tempR3 >>= 16;
        pOutputSamples[i*8+0] = (ma_int16)tempL0;
        pOutputSamples[i*8+1] = (ma_int16)tempR0;
        pOutputSamples[i*8+2] = (ma_int16)tempL1;
        pOutputSamples[i*8+3] = (ma_int16)tempR1;
        pOutputSamples[i*8+4] = (ma_int16)tempL2;
        pOutputSamples[i*8+5] = (ma_int16)tempR2;
        pOutputSamples[i*8+6] = (ma_int16)tempL3;
        pOutputSamples[i*8+7] = (ma_int16)tempR3;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int16)((pInputSamples0U32[i] << shift0) >> 16);
        pOutputSamples[i*2+1] = (ma_int16)((pInputSamples1U32[i] << shift1) >> 16);
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    for (i = 0; i < frameCount4; ++i) {
        __m128i left  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i right = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        left  = _mm_srai_epi32(left,  16);
        right = _mm_srai_epi32(right, 16);
        _mm_storeu_si128((__m128i*)(pOutputSamples + i*8), ma_dr_flac__mm_packs_interleaved_epi32(left, right));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int16)((pInputSamples0U32[i] << shift0) >> 16);
        pOutputSamples[i*2+1] = (ma_int16)((pInputSamples1U32[i] << shift1) >> 16);
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    int32x4_t shift0_4 = vdupq_n_s32(shift0);
    int32x4_t shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        int32x4_t left;
        int32x4_t right;
        left  = vreinterpretq_s32_u32(vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4));
        right = vreinterpretq_s32_u32(vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4));
        left  = vshrq_n_s32(left,  16);
        right = vshrq_n_s32(right, 16);
        ma_dr_flac__vst2q_s16(pOutputSamples + i*8, vzip_s16(vmovn_s32(left), vmovn_s32(right)));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int16)((pInputSamples0U32[i] << shift0) >> 16);
        pOutputSamples[i*2+1] = (ma_int16)((pInputSamples1U32[i] << shift1) >> 16);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, ma_int16* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
MA_API ma_uint64 ma_dr_flac_read_pcm_frames_s16(ma_dr_flac* pFlac, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    ma_uint64 framesRead;
    ma_uint32 unusedBitsPerSample;
    if (pFlac == NULL || framesToRead == 0) {
        return 0;
    }
    if (pBufferOut == NULL) {
        return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, framesToRead);
    }
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 32);
    unusedBitsPerSample = 32 - pFlac->bitsPerSample;
    framesRead = 0;
    while (framesToRead > 0) {
        if (pFlac->currentFLACFrame.pcmFramesRemaining == 0) {
            if (!ma_dr_flac__read_and_decode_next_flac_frame(pFlac)) {
                break;
            }
        } else {
            unsigned int channelCount = ma_dr_flac__get_channel_count_from_channel_assignment(pFlac->currentFLACFrame.header.channelAssignment);
            ma_uint64 iFirstPCMFrame = pFlac->currentFLACFrame.header.blockSizeInPCMFrames - pFlac->currentFLACFrame.pcmFramesRemaining;
            ma_uint64 frameCountThisIteration = framesToRead;
            if (frameCountThisIteration > pFlac->currentFLACFrame.pcmFramesRemaining) {
                frameCountThisIteration = pFlac->currentFLACFrame.pcmFramesRemaining;
            }
            if (channelCount == 2) {
                const ma_int32* pDecodedSamples0 = pFlac->currentFLACFrame.subframes[0].pSamplesS32 + iFirstPCMFrame;
                const ma_int32* pDecodedSamples1 = pFlac->currentFLACFrame.subframes[1].pSamplesS32 + iFirstPCMFrame;
                switch (pFlac->currentFLACFrame.header.channelAssignment)
                {
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_s16__decode_left_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_s16__decode_right_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_MID_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_s16__decode_mid_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_INDEPENDENT:
                    default:
                    {
                        ma_dr_flac_read_pcm_frames_s16__decode_independent_stereo(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                }
            } else {
                ma_uint64 i;
                for (i = 0; i < frameCountThisIteration; ++i) {
                    unsigned int j;
                    for (j = 0; j < channelCount; ++j) {
                        ma_int32 sampleS32 = (ma_int32)((ma_uint32)(pFlac->currentFLACFrame.subframes[j].pSamplesS32[iFirstPCMFrame + i]) << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[j].wastedBitsPerSample));
                        pBufferOut[(i*channelCount)+j] = (ma_int16)(sampleS32 >> 16);
                    }
                }
            }
            framesRead                += frameCountThisIteration;
            pBufferOut                += frameCountThisIteration * channelCount;
            framesToRead              -= frameCountThisIteration;
            pFlac->currentPCMFrame    += frameCountThisIteration;
            pFlac->currentFLACFrame.pcmFramesRemaining -= (ma_uint32)frameCountThisIteration;
        }
    }
    return framesRead;
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_left_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    for (i = 0; i < frameCount; ++i) {
        ma_uint32 left  = (ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
        ma_uint32 side  = (ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (float)((ma_int32)left  / 2147483648.0);
        pOutputSamples[i*2+1] = (float)((ma_int32)right / 2147483648.0);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_left_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    float factor = 1 / 2147483648.0;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 left0 = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 left1 = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 left2 = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 left3 = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 side0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 side1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 side2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 side3 = pInputSamples1U32[i*4+3] << shift1;
        ma_uint32 right0 = left0 - side0;
        ma_uint32 right1 = left1 - side1;
        ma_uint32 right2 = left2 - side2;
        ma_uint32 right3 = left3 - side3;
        pOutputSamples[i*8+0] = (ma_int32)left0  * factor;
        pOutputSamples[i*8+1] = (ma_int32)right0 * factor;
        pOutputSamples[i*8+2] = (ma_int32)left1  * factor;
        pOutputSamples[i*8+3] = (ma_int32)right1 * factor;
        pOutputSamples[i*8+4] = (ma_int32)left2  * factor;
        pOutputSamples[i*8+5] = (ma_int32)right2 * factor;
        pOutputSamples[i*8+6] = (ma_int32)left3  * factor;
        pOutputSamples[i*8+7] = (ma_int32)right3 * factor;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left  * factor;
        pOutputSamples[i*2+1] = (ma_int32)right * factor;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_left_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample) - 8;
    ma_uint32 shift1 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample) - 8;
    __m128 factor;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    factor = _mm_set1_ps(1.0f / 8388608.0f);
    for (i = 0; i < frameCount4; ++i) {
        __m128i left  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        __m128i right = _mm_sub_epi32(left, side);
        __m128 leftf  = _mm_mul_ps(_mm_cvtepi32_ps(left),  factor);
        __m128 rightf = _mm_mul_ps(_mm_cvtepi32_ps(right), factor);
        _mm_storeu_ps(pOutputSamples + i*8 + 0, _mm_unpacklo_ps(leftf, rightf));
        _mm_storeu_ps(pOutputSamples + i*8 + 4, _mm_unpackhi_ps(leftf, rightf));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left  / 8388608.0f;
        pOutputSamples[i*2+1] = (ma_int32)right / 8388608.0f;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_left_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample) - 8;
    ma_uint32 shift1 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample) - 8;
    float32x4_t factor4;
    int32x4_t shift0_4;
    int32x4_t shift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    factor4  = vdupq_n_f32(1.0f / 8388608.0f);
    shift0_4 = vdupq_n_s32(shift0);
    shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        uint32x4_t left;
        uint32x4_t side;
        uint32x4_t right;
        float32x4_t leftf;
        float32x4_t rightf;
        left   = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4);
        side   = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4);
        right  = vsubq_u32(left, side);
        leftf  = vmulq_f32(vcvtq_f32_s32(vreinterpretq_s32_u32(left)),  factor4);
        rightf = vmulq_f32(vcvtq_f32_s32(vreinterpretq_s32_u32(right)), factor4);
        ma_dr_flac__vst2q_f32(pOutputSamples + i*8, vzipq_f32(leftf, rightf));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 left  = pInputSamples0U32[i] << shift0;
        ma_uint32 side  = pInputSamples1U32[i] << shift1;
        ma_uint32 right = left - side;
        pOutputSamples[i*2+0] = (ma_int32)left  / 8388608.0f;
        pOutputSamples[i*2+1] = (ma_int32)right / 8388608.0f;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_left_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_left_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_left_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_f32__decode_left_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_f32__decode_left_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_right_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    for (i = 0; i < frameCount; ++i) {
        ma_uint32 side  = (ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
        ma_uint32 right = (ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (float)((ma_int32)left  / 2147483648.0);
        pOutputSamples[i*2+1] = (float)((ma_int32)right / 2147483648.0);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_right_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    float factor = 1 / 2147483648.0;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 side0  = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 side1  = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 side2  = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 side3  = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 right0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 right1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 right2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 right3 = pInputSamples1U32[i*4+3] << shift1;
        ma_uint32 left0 = right0 + side0;
        ma_uint32 left1 = right1 + side1;
        ma_uint32 left2 = right2 + side2;
        ma_uint32 left3 = right3 + side3;
        pOutputSamples[i*8+0] = (ma_int32)left0  * factor;
        pOutputSamples[i*8+1] = (ma_int32)right0 * factor;
        pOutputSamples[i*8+2] = (ma_int32)left1  * factor;
        pOutputSamples[i*8+3] = (ma_int32)right1 * factor;
        pOutputSamples[i*8+4] = (ma_int32)left2  * factor;
        pOutputSamples[i*8+5] = (ma_int32)right2 * factor;
        pOutputSamples[i*8+6] = (ma_int32)left3  * factor;
        pOutputSamples[i*8+7] = (ma_int32)right3 * factor;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left  * factor;
        pOutputSamples[i*2+1] = (ma_int32)right * factor;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_right_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample) - 8;
    ma_uint32 shift1 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample) - 8;
    __m128 factor;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    factor = _mm_set1_ps(1.0f / 8388608.0f);
    for (i = 0; i < frameCount4; ++i) {
        __m128i side  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        __m128i right = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        __m128i left  = _mm_add_epi32(right, side);
        __m128 leftf  = _mm_mul_ps(_mm_cvtepi32_ps(left),  factor);
        __m128 rightf = _mm_mul_ps(_mm_cvtepi32_ps(right), factor);
        _mm_storeu_ps(pOutputSamples + i*8 + 0, _mm_unpacklo_ps(leftf, rightf));
        _mm_storeu_ps(pOutputSamples + i*8 + 4, _mm_unpackhi_ps(leftf, rightf));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left  / 8388608.0f;
        pOutputSamples[i*2+1] = (ma_int32)right / 8388608.0f;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_right_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample) - 8;
    ma_uint32 shift1 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample) - 8;
    float32x4_t factor4;
    int32x4_t shift0_4;
    int32x4_t shift1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    factor4  = vdupq_n_f32(1.0f / 8388608.0f);
    shift0_4 = vdupq_n_s32(shift0);
    shift1_4 = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        uint32x4_t side;
        uint32x4_t right;
        uint32x4_t left;
        float32x4_t leftf;
        float32x4_t rightf;
        side   = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4);
        right  = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4);
        left   = vaddq_u32(right, side);
        leftf  = vmulq_f32(vcvtq_f32_s32(vreinterpretq_s32_u32(left)),  factor4);
        rightf = vmulq_f32(vcvtq_f32_s32(vreinterpretq_s32_u32(right)), factor4);
        ma_dr_flac__vst2q_f32(pOutputSamples + i*8, vzipq_f32(leftf, rightf));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 side  = pInputSamples0U32[i] << shift0;
        ma_uint32 right = pInputSamples1U32[i] << shift1;
        ma_uint32 left  = right + side;
        pOutputSamples[i*2+0] = (ma_int32)left  / 8388608.0f;
        pOutputSamples[i*2+1] = (ma_int32)right / 8388608.0f;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_right_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_right_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_right_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_f32__decode_right_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_f32__decode_right_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_mid_side__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    for (ma_uint64 i = 0; i < frameCount; ++i) {
        ma_uint32 mid  = (ma_uint32)pInputSamples0[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
        ma_uint32 side = (ma_uint32)pInputSamples1[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
        mid = (mid << 1) | (side & 0x01);
        pOutputSamples[i*2+0] = (float)((((ma_int32)(mid + side) >> 1) << (unusedBitsPerSample)) / 2147483648.0);
        pOutputSamples[i*2+1] = (float)((((ma_int32)(mid - side) >> 1) << (unusedBitsPerSample)) / 2147483648.0);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_mid_side__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift = unusedBitsPerSample;
    float factor = 1 / 2147483648.0;
    if (shift > 0) {
        shift -= 1;
        for (i = 0; i < frameCount4; ++i) {
            ma_uint32 temp0L;
            ma_uint32 temp1L;
            ma_uint32 temp2L;
            ma_uint32 temp3L;
            ma_uint32 temp0R;
            ma_uint32 temp1R;
            ma_uint32 temp2R;
            ma_uint32 temp3R;
            ma_uint32 mid0  = pInputSamples0U32[i*4+0] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid1  = pInputSamples0U32[i*4+1] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid2  = pInputSamples0U32[i*4+2] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid3  = pInputSamples0U32[i*4+3] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side0 = pInputSamples1U32[i*4+0] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side1 = pInputSamples1U32[i*4+1] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side2 = pInputSamples1U32[i*4+2] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side3 = pInputSamples1U32[i*4+3] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid0 = (mid0 << 1) | (side0 & 0x01);
            mid1 = (mid1 << 1) | (side1 & 0x01);
            mid2 = (mid2 << 1) | (side2 & 0x01);
            mid3 = (mid3 << 1) | (side3 & 0x01);
            temp0L = (mid0 + side0) << shift;
            temp1L = (mid1 + side1) << shift;
            temp2L = (mid2 + side2) << shift;
            temp3L = (mid3 + side3) << shift;
            temp0R = (mid0 - side0) << shift;
            temp1R = (mid1 - side1) << shift;
            temp2R = (mid2 - side2) << shift;
            temp3R = (mid3 - side3) << shift;
            pOutputSamples[i*8+0] = (ma_int32)temp0L * factor;
            pOutputSamples[i*8+1] = (ma_int32)temp0R * factor;
            pOutputSamples[i*8+2] = (ma_int32)temp1L * factor;
            pOutputSamples[i*8+3] = (ma_int32)temp1R * factor;
            pOutputSamples[i*8+4] = (ma_int32)temp2L * factor;
            pOutputSamples[i*8+5] = (ma_int32)temp2R * factor;
            pOutputSamples[i*8+6] = (ma_int32)temp3L * factor;
            pOutputSamples[i*8+7] = (ma_int32)temp3R * factor;
        }
    } else {
        for (i = 0; i < frameCount4; ++i) {
            ma_uint32 temp0L;
            ma_uint32 temp1L;
            ma_uint32 temp2L;
            ma_uint32 temp3L;
            ma_uint32 temp0R;
            ma_uint32 temp1R;
            ma_uint32 temp2R;
            ma_uint32 temp3R;
            ma_uint32 mid0  = pInputSamples0U32[i*4+0] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid1  = pInputSamples0U32[i*4+1] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid2  = pInputSamples0U32[i*4+2] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 mid3  = pInputSamples0U32[i*4+3] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side0 = pInputSamples1U32[i*4+0] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side1 = pInputSamples1U32[i*4+1] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side2 = pInputSamples1U32[i*4+2] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            ma_uint32 side3 = pInputSamples1U32[i*4+3] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid0 = (mid0 << 1) | (side0 & 0x01);
            mid1 = (mid1 << 1) | (side1 & 0x01);
            mid2 = (mid2 << 1) | (side2 & 0x01);
            mid3 = (mid3 << 1) | (side3 & 0x01);
            temp0L = (ma_uint32)((ma_int32)(mid0 + side0) >> 1);
            temp1L = (ma_uint32)((ma_int32)(mid1 + side1) >> 1);
            temp2L = (ma_uint32)((ma_int32)(mid2 + side2) >> 1);
            temp3L = (ma_uint32)((ma_int32)(mid3 + side3) >> 1);
            temp0R = (ma_uint32)((ma_int32)(mid0 - side0) >> 1);
            temp1R = (ma_uint32)((ma_int32)(mid1 - side1) >> 1);
            temp2R = (ma_uint32)((ma_int32)(mid2 - side2) >> 1);
            temp3R = (ma_uint32)((ma_int32)(mid3 - side3) >> 1);
            pOutputSamples[i*8+0] = (ma_int32)temp0L * factor;
            pOutputSamples[i*8+1] = (ma_int32)temp0R * factor;
            pOutputSamples[i*8+2] = (ma_int32)temp1L * factor;
            pOutputSamples[i*8+3] = (ma_int32)temp1R * factor;
            pOutputSamples[i*8+4] = (ma_int32)temp2L * factor;
            pOutputSamples[i*8+5] = (ma_int32)temp2R * factor;
            pOutputSamples[i*8+6] = (ma_int32)temp3L * factor;
            pOutputSamples[i*8+7] = (ma_int32)temp3R * factor;
        }
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
        ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
        mid = (mid << 1) | (side & 0x01);
        pOutputSamples[i*2+0] = (ma_int32)((ma_uint32)((ma_int32)(mid + side) >> 1) << unusedBitsPerSample) * factor;
        pOutputSamples[i*2+1] = (ma_int32)((ma_uint32)((ma_int32)(mid - side) >> 1) << unusedBitsPerSample) * factor;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_mid_side__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift = unusedBitsPerSample - 8;
    float factor;
    __m128 factor128;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    factor = 1.0f / 8388608.0f;
    factor128 = _mm_set1_ps(factor);
    if (shift == 0) {
        for (i = 0; i < frameCount4; ++i) {
            __m128i mid;
            __m128i side;
            __m128i tempL;
            __m128i tempR;
            __m128  leftf;
            __m128  rightf;
            mid    = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
            side   = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
            mid    = _mm_or_si128(_mm_slli_epi32(mid, 1), _mm_and_si128(side, _mm_set1_epi32(0x01)));
            tempL  = _mm_srai_epi32(_mm_add_epi32(mid, side), 1);
            tempR  = _mm_srai_epi32(_mm_sub_epi32(mid, side), 1);
            leftf  = _mm_mul_ps(_mm_cvtepi32_ps(tempL), factor128);
            rightf = _mm_mul_ps(_mm_cvtepi32_ps(tempR), factor128);
            _mm_storeu_ps(pOutputSamples + i*8 + 0, _mm_unpacklo_ps(leftf, rightf));
            _mm_storeu_ps(pOutputSamples + i*8 + 4, _mm_unpackhi_ps(leftf, rightf));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = ((ma_int32)(mid + side) >> 1) * factor;
            pOutputSamples[i*2+1] = ((ma_int32)(mid - side) >> 1) * factor;
        }
    } else {
        shift -= 1;
        for (i = 0; i < frameCount4; ++i) {
            __m128i mid;
            __m128i side;
            __m128i tempL;
            __m128i tempR;
            __m128 leftf;
            __m128 rightf;
            mid    = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
            side   = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
            mid    = _mm_or_si128(_mm_slli_epi32(mid, 1), _mm_and_si128(side, _mm_set1_epi32(0x01)));
            tempL  = _mm_slli_epi32(_mm_add_epi32(mid, side), shift);
            tempR  = _mm_slli_epi32(_mm_sub_epi32(mid, side), shift);
            leftf  = _mm_mul_ps(_mm_cvtepi32_ps(tempL), factor128);
            rightf = _mm_mul_ps(_mm_cvtepi32_ps(tempR), factor128);
            _mm_storeu_ps(pOutputSamples + i*8 + 0, _mm_unpacklo_ps(leftf, rightf));
            _mm_storeu_ps(pOutputSamples + i*8 + 4, _mm_unpackhi_ps(leftf, rightf));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int32)((mid + side) << shift) * factor;
            pOutputSamples[i*2+1] = (ma_int32)((mid - side) << shift) * factor;
        }
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_mid_side__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift = unusedBitsPerSample - 8;
    float factor;
    float32x4_t factor4;
    int32x4_t shift4;
    int32x4_t wbps0_4;
    int32x4_t wbps1_4;
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 24);
    factor  = 1.0f / 8388608.0f;
    factor4 = vdupq_n_f32(factor);
    wbps0_4 = vdupq_n_s32(pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample);
    wbps1_4 = vdupq_n_s32(pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample);
    if (shift == 0) {
        for (i = 0; i < frameCount4; ++i) {
            int32x4_t lefti;
            int32x4_t righti;
            float32x4_t leftf;
            float32x4_t rightf;
            uint32x4_t mid  = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), wbps0_4);
            uint32x4_t side = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), wbps1_4);
            mid    = vorrq_u32(vshlq_n_u32(mid, 1), vandq_u32(side, vdupq_n_u32(1)));
            lefti  = vshrq_n_s32(vreinterpretq_s32_u32(vaddq_u32(mid, side)), 1);
            righti = vshrq_n_s32(vreinterpretq_s32_u32(vsubq_u32(mid, side)), 1);
            leftf  = vmulq_f32(vcvtq_f32_s32(lefti),  factor4);
            rightf = vmulq_f32(vcvtq_f32_s32(righti), factor4);
            ma_dr_flac__vst2q_f32(pOutputSamples + i*8, vzipq_f32(leftf, rightf));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = ((ma_int32)(mid + side) >> 1) * factor;
            pOutputSamples[i*2+1] = ((ma_int32)(mid - side) >> 1) * factor;
        }
    } else {
        shift -= 1;
        shift4 = vdupq_n_s32(shift);
        for (i = 0; i < frameCount4; ++i) {
            uint32x4_t mid;
            uint32x4_t side;
            int32x4_t lefti;
            int32x4_t righti;
            float32x4_t leftf;
            float32x4_t rightf;
            mid    = vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), wbps0_4);
            side   = vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), wbps1_4);
            mid    = vorrq_u32(vshlq_n_u32(mid, 1), vandq_u32(side, vdupq_n_u32(1)));
            lefti  = vreinterpretq_s32_u32(vshlq_u32(vaddq_u32(mid, side), shift4));
            righti = vreinterpretq_s32_u32(vshlq_u32(vsubq_u32(mid, side), shift4));
            leftf  = vmulq_f32(vcvtq_f32_s32(lefti),  factor4);
            rightf = vmulq_f32(vcvtq_f32_s32(righti), factor4);
            ma_dr_flac__vst2q_f32(pOutputSamples + i*8, vzipq_f32(leftf, rightf));
        }
        for (i = (frameCount4 << 2); i < frameCount; ++i) {
            ma_uint32 mid  = pInputSamples0U32[i] << pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
            ma_uint32 side = pInputSamples1U32[i] << pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
            mid = (mid << 1) | (side & 0x01);
            pOutputSamples[i*2+0] = (ma_int32)((mid + side) << shift) * factor;
            pOutputSamples[i*2+1] = (ma_int32)((mid - side) << shift) * factor;
        }
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_mid_side(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_mid_side__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_mid_side__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_f32__decode_mid_side__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_f32__decode_mid_side__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
#if 0
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__reference(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    for (ma_uint64 i = 0; i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (float)((ma_int32)((ma_uint32)pInputSamples0[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample)) / 2147483648.0);
        pOutputSamples[i*2+1] = (float)((ma_int32)((ma_uint32)pInputSamples1[i] << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample)) / 2147483648.0);
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__scalar(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample;
    ma_uint32 shift1 = unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample;
    float factor = 1 / 2147483648.0;
    for (i = 0; i < frameCount4; ++i) {
        ma_uint32 tempL0 = pInputSamples0U32[i*4+0] << shift0;
        ma_uint32 tempL1 = pInputSamples0U32[i*4+1] << shift0;
        ma_uint32 tempL2 = pInputSamples0U32[i*4+2] << shift0;
        ma_uint32 tempL3 = pInputSamples0U32[i*4+3] << shift0;
        ma_uint32 tempR0 = pInputSamples1U32[i*4+0] << shift1;
        ma_uint32 tempR1 = pInputSamples1U32[i*4+1] << shift1;
        ma_uint32 tempR2 = pInputSamples1U32[i*4+2] << shift1;
        ma_uint32 tempR3 = pInputSamples1U32[i*4+3] << shift1;
        pOutputSamples[i*8+0] = (ma_int32)tempL0 * factor;
        pOutputSamples[i*8+1] = (ma_int32)tempR0 * factor;
        pOutputSamples[i*8+2] = (ma_int32)tempL1 * factor;
        pOutputSamples[i*8+3] = (ma_int32)tempR1 * factor;
        pOutputSamples[i*8+4] = (ma_int32)tempL2 * factor;
        pOutputSamples[i*8+5] = (ma_int32)tempR2 * factor;
        pOutputSamples[i*8+6] = (ma_int32)tempL3 * factor;
        pOutputSamples[i*8+7] = (ma_int32)tempR3 * factor;
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)(pInputSamples0U32[i] << shift0) * factor;
        pOutputSamples[i*2+1] = (ma_int32)(pInputSamples1U32[i] << shift1) * factor;
    }
}
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__sse2(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample) - 8;
    ma_uint32 shift1 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample) - 8;
    float factor = 1.0f / 8388608.0f;
    __m128 factor128 = _mm_set1_ps(factor);
    for (i = 0; i < frameCount4; ++i) {
        __m128i lefti;
        __m128i righti;
        __m128 leftf;
        __m128 rightf;
        lefti  = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples0 + i), shift0);
        righti = _mm_slli_epi32(_mm_loadu_si128((const __m128i*)pInputSamples1 + i), shift1);
        leftf  = _mm_mul_ps(_mm_cvtepi32_ps(lefti),  factor128);
        rightf = _mm_mul_ps(_mm_cvtepi32_ps(righti), factor128);
        _mm_storeu_ps(pOutputSamples + i*8 + 0, _mm_unpacklo_ps(leftf, rightf));
        _mm_storeu_ps(pOutputSamples + i*8 + 4, _mm_unpackhi_ps(leftf, rightf));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)(pInputSamples0U32[i] << shift0) * factor;
        pOutputSamples[i*2+1] = (ma_int32)(pInputSamples1U32[i] << shift1) * factor;
    }
}
#endif
#if defined(MA_DR_FLAC_SUPPORT_NEON)
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__neon(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
    ma_uint64 i;
    ma_uint64 frameCount4 = frameCount >> 2;
    const ma_uint32* pInputSamples0U32 = (const ma_uint32*)pInputSamples0;
    const ma_uint32* pInputSamples1U32 = (const ma_uint32*)pInputSamples1;
    ma_uint32 shift0 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[0].wastedBitsPerSample) - 8;
    ma_uint32 shift1 = (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[1].wastedBitsPerSample) - 8;
    float factor = 1.0f / 8388608.0f;
    float32x4_t factor4 = vdupq_n_f32(factor);
    int32x4_t shift0_4  = vdupq_n_s32(shift0);
    int32x4_t shift1_4  = vdupq_n_s32(shift1);
    for (i = 0; i < frameCount4; ++i) {
        int32x4_t lefti;
        int32x4_t righti;
        float32x4_t leftf;
        float32x4_t rightf;
        lefti  = vreinterpretq_s32_u32(vshlq_u32(vld1q_u32(pInputSamples0U32 + i*4), shift0_4));
        righti = vreinterpretq_s32_u32(vshlq_u32(vld1q_u32(pInputSamples1U32 + i*4), shift1_4));
        leftf  = vmulq_f32(vcvtq_f32_s32(lefti),  factor4);
        rightf = vmulq_f32(vcvtq_f32_s32(righti), factor4);
        ma_dr_flac__vst2q_f32(pOutputSamples + i*8, vzipq_f32(leftf, rightf));
    }
    for (i = (frameCount4 << 2); i < frameCount; ++i) {
        pOutputSamples[i*2+0] = (ma_int32)(pInputSamples0U32[i] << shift0) * factor;
        pOutputSamples[i*2+1] = (ma_int32)(pInputSamples1U32[i] << shift1) * factor;
    }
}
#endif
static MA_INLINE void ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo(ma_dr_flac* pFlac, ma_uint64 frameCount, ma_uint32 unusedBitsPerSample, const ma_int32* pInputSamples0, const ma_int32* pInputSamples1, float* pOutputSamples)
{
#if defined(MA_DR_FLAC_SUPPORT_SSE2)
    if (ma_dr_flac__gIsSSE2Supported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__sse2(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#elif defined(MA_DR_FLAC_SUPPORT_NEON)
    if (ma_dr_flac__gIsNEONSupported && pFlac->bitsPerSample <= 24) {
        ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__neon(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
    } else
#endif
    {
#if 0
        ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__reference(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#else
        ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo__scalar(pFlac, frameCount, unusedBitsPerSample, pInputSamples0, pInputSamples1, pOutputSamples);
#endif
    }
}
MA_API ma_uint64 ma_dr_flac_read_pcm_frames_f32(ma_dr_flac* pFlac, ma_uint64 framesToRead, float* pBufferOut)
{
    ma_uint64 framesRead;
    ma_uint32 unusedBitsPerSample;
    if (pFlac == NULL || framesToRead == 0) {
        return 0;
    }
    if (pBufferOut == NULL) {
        return ma_dr_flac__seek_forward_by_pcm_frames(pFlac, framesToRead);
    }
    MA_DR_FLAC_ASSERT(pFlac->bitsPerSample <= 32);
    unusedBitsPerSample = 32 - pFlac->bitsPerSample;
    framesRead = 0;
    while (framesToRead > 0) {
        if (pFlac->currentFLACFrame.pcmFramesRemaining == 0) {
            if (!ma_dr_flac__read_and_decode_next_flac_frame(pFlac)) {
                break;
            }
        } else {
            unsigned int channelCount = ma_dr_flac__get_channel_count_from_channel_assignment(pFlac->currentFLACFrame.header.channelAssignment);
            ma_uint64 iFirstPCMFrame = pFlac->currentFLACFrame.header.blockSizeInPCMFrames - pFlac->currentFLACFrame.pcmFramesRemaining;
            ma_uint64 frameCountThisIteration = framesToRead;
            if (frameCountThisIteration > pFlac->currentFLACFrame.pcmFramesRemaining) {
                frameCountThisIteration = pFlac->currentFLACFrame.pcmFramesRemaining;
            }
            if (channelCount == 2) {
                const ma_int32* pDecodedSamples0 = pFlac->currentFLACFrame.subframes[0].pSamplesS32 + iFirstPCMFrame;
                const ma_int32* pDecodedSamples1 = pFlac->currentFLACFrame.subframes[1].pSamplesS32 + iFirstPCMFrame;
                switch (pFlac->currentFLACFrame.header.channelAssignment)
                {
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_LEFT_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_f32__decode_left_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_RIGHT_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_f32__decode_right_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_MID_SIDE:
                    {
                        ma_dr_flac_read_pcm_frames_f32__decode_mid_side(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                    case MA_DR_FLAC_CHANNEL_ASSIGNMENT_INDEPENDENT:
                    default:
                    {
                        ma_dr_flac_read_pcm_frames_f32__decode_independent_stereo(pFlac, frameCountThisIteration, unusedBitsPerSample, pDecodedSamples0, pDecodedSamples1, pBufferOut);
                    } break;
                }
            } else {
                ma_uint64 i;
                for (i = 0; i < frameCountThisIteration; ++i) {
                    unsigned int j;
                    for (j = 0; j < channelCount; ++j) {
                        ma_int32 sampleS32 = (ma_int32)((ma_uint32)(pFlac->currentFLACFrame.subframes[j].pSamplesS32[iFirstPCMFrame + i]) << (unusedBitsPerSample + pFlac->currentFLACFrame.subframes[j].wastedBitsPerSample));
                        pBufferOut[(i*channelCount)+j] = (float)(sampleS32 / 2147483648.0);
                    }
                }
            }
            framesRead                += frameCountThisIteration;
            pBufferOut                += frameCountThisIteration * channelCount;
            framesToRead              -= frameCountThisIteration;
            pFlac->currentPCMFrame    += frameCountThisIteration;
            pFlac->currentFLACFrame.pcmFramesRemaining -= (unsigned int)frameCountThisIteration;
        }
    }
    return framesRead;
}
MA_API ma_bool32 ma_dr_flac_seek_to_pcm_frame(ma_dr_flac* pFlac, ma_uint64 pcmFrameIndex)
{
    if (pFlac == NULL) {
        return MA_FALSE;
    }
    if (pFlac->currentPCMFrame == pcmFrameIndex) {
        return MA_TRUE;
    }
    if (pFlac->firstFLACFramePosInBytes == 0) {
        return MA_FALSE;
    }
    if (pcmFrameIndex == 0) {
        pFlac->currentPCMFrame = 0;
        return ma_dr_flac__seek_to_first_frame(pFlac);
    } else {
        ma_bool32 wasSuccessful = MA_FALSE;
        ma_uint64 originalPCMFrame = pFlac->currentPCMFrame;
        if (pcmFrameIndex > pFlac->totalPCMFrameCount) {
            pcmFrameIndex = pFlac->totalPCMFrameCount;
        }
        if (pcmFrameIndex > pFlac->currentPCMFrame) {
            ma_uint32 offset = (ma_uint32)(pcmFrameIndex - pFlac->currentPCMFrame);
            if (pFlac->currentFLACFrame.pcmFramesRemaining >  offset) {
                pFlac->currentFLACFrame.pcmFramesRemaining -= offset;
                pFlac->currentPCMFrame = pcmFrameIndex;
                return MA_TRUE;
            }
        } else {
            ma_uint32 offsetAbs = (ma_uint32)(pFlac->currentPCMFrame - pcmFrameIndex);
            ma_uint32 currentFLACFramePCMFrameCount = pFlac->currentFLACFrame.header.blockSizeInPCMFrames;
            ma_uint32 currentFLACFramePCMFramesConsumed = currentFLACFramePCMFrameCount - pFlac->currentFLACFrame.pcmFramesRemaining;
            if (currentFLACFramePCMFramesConsumed > offsetAbs) {
                pFlac->currentFLACFrame.pcmFramesRemaining += offsetAbs;
                pFlac->currentPCMFrame = pcmFrameIndex;
                return MA_TRUE;
            }
        }
#ifndef MA_DR_FLAC_NO_OGG
        if (pFlac->container == ma_dr_flac_container_ogg)
        {
            wasSuccessful = ma_dr_flac_ogg__seek_to_pcm_frame(pFlac, pcmFrameIndex);
        }
        else
#endif
        {
            if (!pFlac->_noSeekTableSeek) {
                wasSuccessful = ma_dr_flac__seek_to_pcm_frame__seek_table(pFlac, pcmFrameIndex);
            }
#if !defined(MA_DR_FLAC_NO_CRC)
            if (!wasSuccessful && !pFlac->_noBinarySearchSeek && pFlac->totalPCMFrameCount > 0) {
                wasSuccessful = ma_dr_flac__seek_to_pcm_frame__binary_search(pFlac, pcmFrameIndex);
            }
#endif
            if (!wasSuccessful && !pFlac->_noBruteForceSeek) {
                wasSuccessful = ma_dr_flac__seek_to_pcm_frame__brute_force(pFlac, pcmFrameIndex);
            }
        }
        if (wasSuccessful) {
            pFlac->currentPCMFrame = pcmFrameIndex;
        } else {
            if (ma_dr_flac_seek_to_pcm_frame(pFlac, originalPCMFrame) == MA_FALSE) {
                ma_dr_flac_seek_to_pcm_frame(pFlac, 0);
            }
        }
        return wasSuccessful;
    }
}
#define MA_DR_FLAC_DEFINE_FULL_READ_AND_CLOSE(extension, type) \
static type* ma_dr_flac__full_read_and_close_ ## extension (ma_dr_flac* pFlac, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalPCMFrameCountOut)\
{                                                                                                                                                                   \
    type* pSampleData = NULL;                                                                                                                                       \
    ma_uint64 totalPCMFrameCount;                                                                                                                               \
                                                                                                                                                                    \
    MA_DR_FLAC_ASSERT(pFlac != NULL);                                                                                                                                   \
                                                                                                                                                                    \
    totalPCMFrameCount = pFlac->totalPCMFrameCount;                                                                                                                 \
                                                                                                                                                                    \
    if (totalPCMFrameCount == 0) {                                                                                                                                  \
        type buffer[4096];                                                                                                                                          \
        ma_uint64 pcmFramesRead;                                                                                                                                \
        size_t sampleDataBufferSize = sizeof(buffer);                                                                                                               \
                                                                                                                                                                    \
        pSampleData = (type*)ma_dr_flac__malloc_from_callbacks(sampleDataBufferSize, &pFlac->allocationCallbacks);                                                      \
        if (pSampleData == NULL) {                                                                                                                                  \
            goto on_error;                                                                                                                                          \
        }                                                                                                                                                           \
                                                                                                                                                                    \
        while ((pcmFramesRead = (ma_uint64)ma_dr_flac_read_pcm_frames_##extension(pFlac, sizeof(buffer)/sizeof(buffer[0])/pFlac->channels, buffer)) > 0) {          \
            if (((totalPCMFrameCount + pcmFramesRead) * pFlac->channels * sizeof(type)) > sampleDataBufferSize) {                                                   \
                type* pNewSampleData;                                                                                                                               \
                size_t newSampleDataBufferSize;                                                                                                                     \
                                                                                                                                                                    \
                newSampleDataBufferSize = sampleDataBufferSize * 2;                                                                                                 \
                pNewSampleData = (type*)ma_dr_flac__realloc_from_callbacks(pSampleData, newSampleDataBufferSize, sampleDataBufferSize, &pFlac->allocationCallbacks);    \
                if (pNewSampleData == NULL) {                                                                                                                       \
                    ma_dr_flac__free_from_callbacks(pSampleData, &pFlac->allocationCallbacks);                                                                          \
                    goto on_error;                                                                                                                                  \
                }                                                                                                                                                   \
                                                                                                                                                                    \
                sampleDataBufferSize = newSampleDataBufferSize;                                                                                                     \
                pSampleData = pNewSampleData;                                                                                                                       \
            }                                                                                                                                                       \
                                                                                                                                                                    \
            MA_DR_FLAC_COPY_MEMORY(pSampleData + (totalPCMFrameCount*pFlac->channels), buffer, (size_t)(pcmFramesRead*pFlac->channels*sizeof(type)));                   \
            totalPCMFrameCount += pcmFramesRead;                                                                                                                    \
        }                                                                                                                                                           \
                                                                                                                                                                    \
                                                                                                                         \
        MA_DR_FLAC_ZERO_MEMORY(pSampleData + (totalPCMFrameCount*pFlac->channels), (size_t)(sampleDataBufferSize - totalPCMFrameCount*pFlac->channels*sizeof(type)));   \
    } else {                                                                                                                                                        \
        ma_uint64 dataSize = totalPCMFrameCount*pFlac->channels*sizeof(type);                                                                                   \
        if (dataSize > (ma_uint64)MA_SIZE_MAX) {                                                                                                            \
            goto on_error;                                                                                                        \
        }                                                                                                                                                           \
                                                                                                                                                                    \
        pSampleData = (type*)ma_dr_flac__malloc_from_callbacks((size_t)dataSize, &pFlac->allocationCallbacks);               \
        if (pSampleData == NULL) {                                                                                                                                  \
            goto on_error;                                                                                                                                          \
        }                                                                                                                                                           \
                                                                                                                                                                    \
        totalPCMFrameCount = ma_dr_flac_read_pcm_frames_##extension(pFlac, pFlac->totalPCMFrameCount, pSampleData);                                                     \
    }                                                                                                                                                               \
                                                                                                                                                                    \
    if (sampleRateOut) *sampleRateOut = pFlac->sampleRate;                                                                                                          \
    if (channelsOut) *channelsOut = pFlac->channels;                                                                                                                \
    if (totalPCMFrameCountOut) *totalPCMFrameCountOut = totalPCMFrameCount;                                                                                         \
                                                                                                                                                                    \
    ma_dr_flac_close(pFlac);                                                                                                                                            \
    return pSampleData;                                                                                                                                             \
                                                                                                                                                                    \
on_error:                                                                                                                                                           \
    ma_dr_flac_close(pFlac);                                                                                                                                            \
    return NULL;                                                                                                                                                    \
}
MA_DR_FLAC_DEFINE_FULL_READ_AND_CLOSE(s32, ma_int32)
MA_DR_FLAC_DEFINE_FULL_READ_AND_CLOSE(s16, ma_int16)
MA_DR_FLAC_DEFINE_FULL_READ_AND_CLOSE(f32, float)
MA_API ma_int32* ma_dr_flac_open_and_read_pcm_frames_s32(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalPCMFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalPCMFrameCountOut) {
        *totalPCMFrameCountOut = 0;
    }
    pFlac = ma_dr_flac_open(onRead, onSeek, pUserData, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_s32(pFlac, channelsOut, sampleRateOut, totalPCMFrameCountOut);
}
MA_API ma_int16* ma_dr_flac_open_and_read_pcm_frames_s16(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalPCMFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalPCMFrameCountOut) {
        *totalPCMFrameCountOut = 0;
    }
    pFlac = ma_dr_flac_open(onRead, onSeek, pUserData, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_s16(pFlac, channelsOut, sampleRateOut, totalPCMFrameCountOut);
}
MA_API float* ma_dr_flac_open_and_read_pcm_frames_f32(ma_dr_flac_read_proc onRead, ma_dr_flac_seek_proc onSeek, void* pUserData, unsigned int* channelsOut, unsigned int* sampleRateOut, ma_uint64* totalPCMFrameCountOut, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (channelsOut) {
        *channelsOut = 0;
    }
    if (sampleRateOut) {
        *sampleRateOut = 0;
    }
    if (totalPCMFrameCountOut) {
        *totalPCMFrameCountOut = 0;
    }
    pFlac = ma_dr_flac_open(onRead, onSeek, pUserData, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_f32(pFlac, channelsOut, sampleRateOut, totalPCMFrameCountOut);
}
#ifndef MA_DR_FLAC_NO_STDIO
MA_API ma_int32* ma_dr_flac_open_file_and_read_pcm_frames_s32(const char* filename, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (sampleRate) {
        *sampleRate = 0;
    }
    if (channels) {
        *channels = 0;
    }
    if (totalPCMFrameCount) {
        *totalPCMFrameCount = 0;
    }
    pFlac = ma_dr_flac_open_file(filename, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_s32(pFlac, channels, sampleRate, totalPCMFrameCount);
}
MA_API ma_int16* ma_dr_flac_open_file_and_read_pcm_frames_s16(const char* filename, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (sampleRate) {
        *sampleRate = 0;
    }
    if (channels) {
        *channels = 0;
    }
    if (totalPCMFrameCount) {
        *totalPCMFrameCount = 0;
    }
    pFlac = ma_dr_flac_open_file(filename, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_s16(pFlac, channels, sampleRate, totalPCMFrameCount);
}
MA_API float* ma_dr_flac_open_file_and_read_pcm_frames_f32(const char* filename, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (sampleRate) {
        *sampleRate = 0;
    }
    if (channels) {
        *channels = 0;
    }
    if (totalPCMFrameCount) {
        *totalPCMFrameCount = 0;
    }
    pFlac = ma_dr_flac_open_file(filename, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_f32(pFlac, channels, sampleRate, totalPCMFrameCount);
}
#endif
MA_API ma_int32* ma_dr_flac_open_memory_and_read_pcm_frames_s32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (sampleRate) {
        *sampleRate = 0;
    }
    if (channels) {
        *channels = 0;
    }
    if (totalPCMFrameCount) {
        *totalPCMFrameCount = 0;
    }
    pFlac = ma_dr_flac_open_memory(data, dataSize, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_s32(pFlac, channels, sampleRate, totalPCMFrameCount);
}
MA_API ma_int16* ma_dr_flac_open_memory_and_read_pcm_frames_s16(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (sampleRate) {
        *sampleRate = 0;
    }
    if (channels) {
        *channels = 0;
    }
    if (totalPCMFrameCount) {
        *totalPCMFrameCount = 0;
    }
    pFlac = ma_dr_flac_open_memory(data, dataSize, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_s16(pFlac, channels, sampleRate, totalPCMFrameCount);
}
MA_API float* ma_dr_flac_open_memory_and_read_pcm_frames_f32(const void* data, size_t dataSize, unsigned int* channels, unsigned int* sampleRate, ma_uint64* totalPCMFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_flac* pFlac;
    if (sampleRate) {
        *sampleRate = 0;
    }
    if (channels) {
        *channels = 0;
    }
    if (totalPCMFrameCount) {
        *totalPCMFrameCount = 0;
    }
    pFlac = ma_dr_flac_open_memory(data, dataSize, pAllocationCallbacks);
    if (pFlac == NULL) {
        return NULL;
    }
    return ma_dr_flac__full_read_and_close_f32(pFlac, channels, sampleRate, totalPCMFrameCount);
}
MA_API void ma_dr_flac_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        ma_dr_flac__free_from_callbacks(p, pAllocationCallbacks);
    } else {
        ma_dr_flac__free_default(p, NULL);
    }
}
MA_API void ma_dr_flac_init_vorbis_comment_iterator(ma_dr_flac_vorbis_comment_iterator* pIter, ma_uint32 commentCount, const void* pComments)
{
    if (pIter == NULL) {
        return;
    }
    pIter->countRemaining = commentCount;
    pIter->pRunningData   = (const char*)pComments;
}
MA_API const char* ma_dr_flac_next_vorbis_comment(ma_dr_flac_vorbis_comment_iterator* pIter, ma_uint32* pCommentLengthOut)
{
    ma_int32 length;
    const char* pComment;
    if (pCommentLengthOut) {
        *pCommentLengthOut = 0;
    }
    if (pIter == NULL || pIter->countRemaining == 0 || pIter->pRunningData == NULL) {
        return NULL;
    }
    length = ma_dr_flac__le2host_32_ptr_unaligned(pIter->pRunningData);
    pIter->pRunningData += 4;
    pComment = pIter->pRunningData;
    pIter->pRunningData += length;
    pIter->countRemaining -= 1;
    if (pCommentLengthOut) {
        *pCommentLengthOut = length;
    }
    return pComment;
}
MA_API void ma_dr_flac_init_cuesheet_track_iterator(ma_dr_flac_cuesheet_track_iterator* pIter, ma_uint32 trackCount, const void* pTrackData)
{
    if (pIter == NULL) {
        return;
    }
    pIter->countRemaining = trackCount;
    pIter->pRunningData   = (const char*)pTrackData;
}
MA_API ma_bool32 ma_dr_flac_next_cuesheet_track(ma_dr_flac_cuesheet_track_iterator* pIter, ma_dr_flac_cuesheet_track* pCuesheetTrack)
{
    ma_dr_flac_cuesheet_track cuesheetTrack;
    const char* pRunningData;
    ma_uint64 offsetHi;
    ma_uint64 offsetLo;
    if (pIter == NULL || pIter->countRemaining == 0 || pIter->pRunningData == NULL) {
        return MA_FALSE;
    }
    pRunningData = pIter->pRunningData;
    offsetHi                   = ma_dr_flac__be2host_32(*(const ma_uint32*)pRunningData); pRunningData += 4;
    offsetLo                   = ma_dr_flac__be2host_32(*(const ma_uint32*)pRunningData); pRunningData += 4;
    cuesheetTrack.offset       = offsetLo | (offsetHi << 32);
    cuesheetTrack.trackNumber  = pRunningData[0];                                         pRunningData += 1;
    MA_DR_FLAC_COPY_MEMORY(cuesheetTrack.ISRC, pRunningData, sizeof(cuesheetTrack.ISRC));     pRunningData += 12;
    cuesheetTrack.isAudio      = (pRunningData[0] & 0x80) != 0;
    cuesheetTrack.preEmphasis  = (pRunningData[0] & 0x40) != 0;                           pRunningData += 14;
    cuesheetTrack.indexCount   = pRunningData[0];                                         pRunningData += 1;
    cuesheetTrack.pIndexPoints = (const ma_dr_flac_cuesheet_track_index*)pRunningData;        pRunningData += cuesheetTrack.indexCount * sizeof(ma_dr_flac_cuesheet_track_index);
    pIter->pRunningData = pRunningData;
    pIter->countRemaining -= 1;
    if (pCuesheetTrack) {
        *pCuesheetTrack = cuesheetTrack;
    }
    return MA_TRUE;
}
#if defined(__clang__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
    #pragma GCC diagnostic pop
#endif
#endif
/* dr_flac_c end */
#endif  /* MA_DR_FLAC_IMPLEMENTATION */
#endif  /* MA_NO_FLAC */

#if !defined(MA_NO_MP3) && !defined(MA_NO_DECODING)
#if !defined(MA_DR_MP3_IMPLEMENTATION)
/* dr_mp3_c begin */
#ifndef ma_dr_mp3_c
#define ma_dr_mp3_c
#include <stdlib.h>
#include <string.h>
#include <limits.h>
MA_API void ma_dr_mp3_version(ma_uint32* pMajor, ma_uint32* pMinor, ma_uint32* pRevision)
{
    if (pMajor) {
        *pMajor = MA_DR_MP3_VERSION_MAJOR;
    }
    if (pMinor) {
        *pMinor = MA_DR_MP3_VERSION_MINOR;
    }
    if (pRevision) {
        *pRevision = MA_DR_MP3_VERSION_REVISION;
    }
}
MA_API const char* ma_dr_mp3_version_string(void)
{
    return MA_DR_MP3_VERSION_STRING;
}
#if defined(__TINYC__)
#define MA_DR_MP3_NO_SIMD
#endif
#define MA_DR_MP3_OFFSET_PTR(p, offset) ((void*)((ma_uint8*)(p) + (offset)))
#define MA_DR_MP3_MAX_FREE_FORMAT_FRAME_SIZE  2304
#ifndef MA_DR_MP3_MAX_FRAME_SYNC_MATCHES
#define MA_DR_MP3_MAX_FRAME_SYNC_MATCHES      10
#endif
#define MA_DR_MP3_MAX_L3_FRAME_PAYLOAD_BYTES  MA_DR_MP3_MAX_FREE_FORMAT_FRAME_SIZE
#define MA_DR_MP3_MAX_BITRESERVOIR_BYTES      511
#define MA_DR_MP3_SHORT_BLOCK_TYPE            2
#define MA_DR_MP3_STOP_BLOCK_TYPE             3
#define MA_DR_MP3_MODE_MONO                   3
#define MA_DR_MP3_MODE_JOINT_STEREO           1
#define MA_DR_MP3_HDR_SIZE                    4
#define MA_DR_MP3_HDR_IS_MONO(h)              (((h[3]) & 0xC0) == 0xC0)
#define MA_DR_MP3_HDR_IS_MS_STEREO(h)         (((h[3]) & 0xE0) == 0x60)
#define MA_DR_MP3_HDR_IS_FREE_FORMAT(h)       (((h[2]) & 0xF0) == 0)
#define MA_DR_MP3_HDR_IS_CRC(h)               (!((h[1]) & 1))
#define MA_DR_MP3_HDR_TEST_PADDING(h)         ((h[2]) & 0x2)
#define MA_DR_MP3_HDR_TEST_MPEG1(h)           ((h[1]) & 0x8)
#define MA_DR_MP3_HDR_TEST_NOT_MPEG25(h)      ((h[1]) & 0x10)
#define MA_DR_MP3_HDR_TEST_I_STEREO(h)        ((h[3]) & 0x10)
#define MA_DR_MP3_HDR_TEST_MS_STEREO(h)       ((h[3]) & 0x20)
#define MA_DR_MP3_HDR_GET_STEREO_MODE(h)      (((h[3]) >> 6) & 3)
#define MA_DR_MP3_HDR_GET_STEREO_MODE_EXT(h)  (((h[3]) >> 4) & 3)
#define MA_DR_MP3_HDR_GET_LAYER(h)            (((h[1]) >> 1) & 3)
#define MA_DR_MP3_HDR_GET_BITRATE(h)          ((h[2]) >> 4)
#define MA_DR_MP3_HDR_GET_SAMPLE_RATE(h)      (((h[2]) >> 2) & 3)
#define MA_DR_MP3_HDR_GET_MY_SAMPLE_RATE(h)   (MA_DR_MP3_HDR_GET_SAMPLE_RATE(h) + (((h[1] >> 3) & 1) + ((h[1] >> 4) & 1))*3)
#define MA_DR_MP3_HDR_IS_FRAME_576(h)         ((h[1] & 14) == 2)
#define MA_DR_MP3_HDR_IS_LAYER_1(h)           ((h[1] & 6) == 6)
#define MA_DR_MP3_BITS_DEQUANTIZER_OUT        -1
#define MA_DR_MP3_MAX_SCF                     (255 + MA_DR_MP3_BITS_DEQUANTIZER_OUT*4 - 210)
#define MA_DR_MP3_MAX_SCFI                    ((MA_DR_MP3_MAX_SCF + 3) & ~3)
#define MA_DR_MP3_MIN(a, b)           ((a) > (b) ? (b) : (a))
#define MA_DR_MP3_MAX(a, b)           ((a) < (b) ? (b) : (a))
#if !defined(MA_DR_MP3_NO_SIMD)
#if !defined(MA_DR_MP3_ONLY_SIMD) && (defined(_M_X64) || defined(__x86_64__) || defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC))
#define MA_DR_MP3_ONLY_SIMD
#endif
#if ((defined(_MSC_VER) && _MSC_VER >= 1400) && defined(_M_X64)) || ((defined(__i386) || defined(_M_IX86) || defined(__i386__) || defined(__x86_64__)) && ((defined(_M_IX86_FP) && _M_IX86_FP == 2) || defined(__SSE2__)))
#if defined(_MSC_VER)
#include <intrin.h>
#endif
#include <emmintrin.h>
#define MA_DR_MP3_HAVE_SSE 1
#define MA_DR_MP3_HAVE_SIMD 1
#define MA_DR_MP3_VSTORE _mm_storeu_ps
#define MA_DR_MP3_VLD _mm_loadu_ps
#define MA_DR_MP3_VSET _mm_set1_ps
#define MA_DR_MP3_VADD _mm_add_ps
#define MA_DR_MP3_VSUB _mm_sub_ps
#define MA_DR_MP3_VMUL _mm_mul_ps
#define MA_DR_MP3_VMAC(a, x, y) _mm_add_ps(a, _mm_mul_ps(x, y))
#define MA_DR_MP3_VMSB(a, x, y) _mm_sub_ps(a, _mm_mul_ps(x, y))
#define MA_DR_MP3_VMUL_S(x, s)  _mm_mul_ps(x, _mm_set1_ps(s))
#define MA_DR_MP3_VREV(x) _mm_shuffle_ps(x, x, _MM_SHUFFLE(0, 1, 2, 3))
typedef __m128 ma_dr_mp3_f4;
#if defined(_MSC_VER) || defined(MA_DR_MP3_ONLY_SIMD)
#define ma_dr_mp3_cpuid __cpuid
#else
static __inline__ __attribute__((always_inline)) void ma_dr_mp3_cpuid(int CPUInfo[], const int InfoType)
{
#if defined(__PIC__)
    __asm__ __volatile__(
#if defined(__x86_64__)
        "push %%rbx\n"
        "cpuid\n"
        "xchgl %%ebx, %1\n"
        "pop  %%rbx\n"
#else
        "xchgl %%ebx, %1\n"
        "cpuid\n"
        "xchgl %%ebx, %1\n"
#endif
        : "=a" (CPUInfo[0]), "=r" (CPUInfo[1]), "=c" (CPUInfo[2]), "=d" (CPUInfo[3])
        : "a" (InfoType));
#else
    __asm__ __volatile__(
        "cpuid"
        : "=a" (CPUInfo[0]), "=b" (CPUInfo[1]), "=c" (CPUInfo[2]), "=d" (CPUInfo[3])
        : "a" (InfoType));
#endif
}
#endif
static int ma_dr_mp3_have_simd(void)
{
#ifdef MA_DR_MP3_ONLY_SIMD
    return 1;
#else
    static int g_have_simd;
    int CPUInfo[4];
#ifdef MINIMP3_TEST
    static int g_counter;
    if (g_counter++ > 100)
        return 0;
#endif
    if (g_have_simd)
        goto end;
    ma_dr_mp3_cpuid(CPUInfo, 0);
    if (CPUInfo[0] > 0)
    {
        ma_dr_mp3_cpuid(CPUInfo, 1);
        g_have_simd = (CPUInfo[3] & (1 << 26)) + 1;
        return g_have_simd - 1;
    }
end:
    return g_have_simd - 1;
#endif
}
#elif defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC)
#include <arm_neon.h>
#define MA_DR_MP3_HAVE_SSE 0
#define MA_DR_MP3_HAVE_SIMD 1
#define MA_DR_MP3_VSTORE vst1q_f32
#define MA_DR_MP3_VLD vld1q_f32
#define MA_DR_MP3_VSET vmovq_n_f32
#define MA_DR_MP3_VADD vaddq_f32
#define MA_DR_MP3_VSUB vsubq_f32
#define MA_DR_MP3_VMUL vmulq_f32
#define MA_DR_MP3_VMAC(a, x, y) vmlaq_f32(a, x, y)
#define MA_DR_MP3_VMSB(a, x, y) vmlsq_f32(a, x, y)
#define MA_DR_MP3_VMUL_S(x, s)  vmulq_f32(x, vmovq_n_f32(s))
#define MA_DR_MP3_VREV(x) vcombine_f32(vget_high_f32(vrev64q_f32(x)), vget_low_f32(vrev64q_f32(x)))
typedef float32x4_t ma_dr_mp3_f4;
static int ma_dr_mp3_have_simd(void)
{
    return 1;
}
#else
#define MA_DR_MP3_HAVE_SSE 0
#define MA_DR_MP3_HAVE_SIMD 0
#ifdef MA_DR_MP3_ONLY_SIMD
#error MA_DR_MP3_ONLY_SIMD used, but SSE/NEON not enabled
#endif
#endif
#else
#define MA_DR_MP3_HAVE_SIMD 0
#endif
#if defined(__ARM_ARCH) && (__ARM_ARCH >= 6) && !defined(__aarch64__) && !defined(_M_ARM64) && !defined(_M_ARM64EC) && !defined(__ARM_ARCH_6M__)
#define MA_DR_MP3_HAVE_ARMV6 1
static __inline__ __attribute__((always_inline)) ma_int32 ma_dr_mp3_clip_int16_arm(ma_int32 a)
{
    ma_int32 x = 0;
    __asm__ ("ssat %0, #16, %1" : "=r"(x) : "r"(a));
    return x;
}
#else
#define MA_DR_MP3_HAVE_ARMV6 0
#endif
#ifndef MA_DR_MP3_ASSERT
#include <assert.h>
#define MA_DR_MP3_ASSERT(expression) assert(expression)
#endif
#ifndef MA_DR_MP3_COPY_MEMORY
#define MA_DR_MP3_COPY_MEMORY(dst, src, sz) memcpy((dst), (src), (sz))
#endif
#ifndef MA_DR_MP3_MOVE_MEMORY
#define MA_DR_MP3_MOVE_MEMORY(dst, src, sz) memmove((dst), (src), (sz))
#endif
#ifndef MA_DR_MP3_ZERO_MEMORY
#define MA_DR_MP3_ZERO_MEMORY(p, sz) memset((p), 0, (sz))
#endif
#define MA_DR_MP3_ZERO_OBJECT(p) MA_DR_MP3_ZERO_MEMORY((p), sizeof(*(p)))
#ifndef MA_DR_MP3_MALLOC
#define MA_DR_MP3_MALLOC(sz) malloc((sz))
#endif
#ifndef MA_DR_MP3_REALLOC
#define MA_DR_MP3_REALLOC(p, sz) realloc((p), (sz))
#endif
#ifndef MA_DR_MP3_FREE
#define MA_DR_MP3_FREE(p) free((p))
#endif
typedef struct
{
    const ma_uint8 *buf;
    int pos, limit;
} ma_dr_mp3_bs;
typedef struct
{
    float scf[3*64];
    ma_uint8 total_bands, stereo_bands, bitalloc[64], scfcod[64];
} ma_dr_mp3_L12_scale_info;
typedef struct
{
    ma_uint8 tab_offset, code_tab_width, band_count;
} ma_dr_mp3_L12_subband_alloc;
typedef struct
{
    const ma_uint8 *sfbtab;
    ma_uint16 part_23_length, big_values, scalefac_compress;
    ma_uint8 global_gain, block_type, mixed_block_flag, n_long_sfb, n_short_sfb;
    ma_uint8 table_select[3], region_count[3], subblock_gain[3];
    ma_uint8 preflag, scalefac_scale, count1_table, scfsi;
} ma_dr_mp3_L3_gr_info;
typedef struct
{
    ma_dr_mp3_bs bs;
    ma_uint8 maindata[MA_DR_MP3_MAX_BITRESERVOIR_BYTES + MA_DR_MP3_MAX_L3_FRAME_PAYLOAD_BYTES];
    ma_dr_mp3_L3_gr_info gr_info[4];
    float grbuf[2][576], scf[40], syn[18 + 15][2*32];
    ma_uint8 ist_pos[2][39];
} ma_dr_mp3dec_scratch;
static void ma_dr_mp3_bs_init(ma_dr_mp3_bs *bs, const ma_uint8 *data, int bytes)
{
    bs->buf   = data;
    bs->pos   = 0;
    bs->limit = bytes*8;
}
static ma_uint32 ma_dr_mp3_bs_get_bits(ma_dr_mp3_bs *bs, int n)
{
    ma_uint32 next, cache = 0, s = bs->pos & 7;
    int shl = n + s;
    const ma_uint8 *p = bs->buf + (bs->pos >> 3);
    if ((bs->pos += n) > bs->limit)
        return 0;
    next = *p++ & (255 >> s);
    while ((shl -= 8) > 0)
    {
        cache |= next << shl;
        next = *p++;
    }
    return cache | (next >> -shl);
}
static int ma_dr_mp3_hdr_valid(const ma_uint8 *h)
{
    return h[0] == 0xff &&
        ((h[1] & 0xF0) == 0xf0 || (h[1] & 0xFE) == 0xe2) &&
        (MA_DR_MP3_HDR_GET_LAYER(h) != 0) &&
        (MA_DR_MP3_HDR_GET_BITRATE(h) != 15) &&
        (MA_DR_MP3_HDR_GET_SAMPLE_RATE(h) != 3);
}
static int ma_dr_mp3_hdr_compare(const ma_uint8 *h1, const ma_uint8 *h2)
{
    return ma_dr_mp3_hdr_valid(h2) &&
        ((h1[1] ^ h2[1]) & 0xFE) == 0 &&
        ((h1[2] ^ h2[2]) & 0x0C) == 0 &&
        !(MA_DR_MP3_HDR_IS_FREE_FORMAT(h1) ^ MA_DR_MP3_HDR_IS_FREE_FORMAT(h2));
}
static unsigned ma_dr_mp3_hdr_bitrate_kbps(const ma_uint8 *h)
{
    static const ma_uint8 halfrate[2][3][15] = {
        { { 0,4,8,12,16,20,24,28,32,40,48,56,64,72,80 }, { 0,4,8,12,16,20,24,28,32,40,48,56,64,72,80 }, { 0,16,24,28,32,40,48,56,64,72,80,88,96,112,128 } },
        { { 0,16,20,24,28,32,40,48,56,64,80,96,112,128,160 }, { 0,16,24,28,32,40,48,56,64,80,96,112,128,160,192 }, { 0,16,32,48,64,80,96,112,128,144,160,176,192,208,224 } },
    };
    return 2*halfrate[!!MA_DR_MP3_HDR_TEST_MPEG1(h)][MA_DR_MP3_HDR_GET_LAYER(h) - 1][MA_DR_MP3_HDR_GET_BITRATE(h)];
}
static unsigned ma_dr_mp3_hdr_sample_rate_hz(const ma_uint8 *h)
{
    static const unsigned g_hz[3] = { 44100, 48000, 32000 };
    return g_hz[MA_DR_MP3_HDR_GET_SAMPLE_RATE(h)] >> (int)!MA_DR_MP3_HDR_TEST_MPEG1(h) >> (int)!MA_DR_MP3_HDR_TEST_NOT_MPEG25(h);
}
static unsigned ma_dr_mp3_hdr_frame_samples(const ma_uint8 *h)
{
    return MA_DR_MP3_HDR_IS_LAYER_1(h) ? 384 : (1152 >> (int)MA_DR_MP3_HDR_IS_FRAME_576(h));
}
static int ma_dr_mp3_hdr_frame_bytes(const ma_uint8 *h, int free_format_size)
{
    int frame_bytes = ma_dr_mp3_hdr_frame_samples(h)*ma_dr_mp3_hdr_bitrate_kbps(h)*125/ma_dr_mp3_hdr_sample_rate_hz(h);
    if (MA_DR_MP3_HDR_IS_LAYER_1(h))
    {
        frame_bytes &= ~3;
    }
    return frame_bytes ? frame_bytes : free_format_size;
}
static int ma_dr_mp3_hdr_padding(const ma_uint8 *h)
{
    return MA_DR_MP3_HDR_TEST_PADDING(h) ? (MA_DR_MP3_HDR_IS_LAYER_1(h) ? 4 : 1) : 0;
}
#ifndef MA_DR_MP3_ONLY_MP3
static const ma_dr_mp3_L12_subband_alloc *ma_dr_mp3_L12_subband_alloc_table(const ma_uint8 *hdr, ma_dr_mp3_L12_scale_info *sci)
{
    const ma_dr_mp3_L12_subband_alloc *alloc;
    int mode = MA_DR_MP3_HDR_GET_STEREO_MODE(hdr);
    int nbands, stereo_bands = (mode == MA_DR_MP3_MODE_MONO) ? 0 : (mode == MA_DR_MP3_MODE_JOINT_STEREO) ? (MA_DR_MP3_HDR_GET_STEREO_MODE_EXT(hdr) << 2) + 4 : 32;
    if (MA_DR_MP3_HDR_IS_LAYER_1(hdr))
    {
        static const ma_dr_mp3_L12_subband_alloc g_alloc_L1[] = { { 76, 4, 32 } };
        alloc = g_alloc_L1;
        nbands = 32;
    } else if (!MA_DR_MP3_HDR_TEST_MPEG1(hdr))
    {
        static const ma_dr_mp3_L12_subband_alloc g_alloc_L2M2[] = { { 60, 4, 4 }, { 44, 3, 7 }, { 44, 2, 19 } };
        alloc = g_alloc_L2M2;
        nbands = 30;
    } else
    {
        static const ma_dr_mp3_L12_subband_alloc g_alloc_L2M1[] = { { 0, 4, 3 }, { 16, 4, 8 }, { 32, 3, 12 }, { 40, 2, 7 } };
        int sample_rate_idx = MA_DR_MP3_HDR_GET_SAMPLE_RATE(hdr);
        unsigned kbps = ma_dr_mp3_hdr_bitrate_kbps(hdr) >> (int)(mode != MA_DR_MP3_MODE_MONO);
        if (!kbps)
        {
            kbps = 192;
        }
        alloc = g_alloc_L2M1;
        nbands = 27;
        if (kbps < 56)
        {
            static const ma_dr_mp3_L12_subband_alloc g_alloc_L2M1_lowrate[] = { { 44, 4, 2 }, { 44, 3, 10 } };
            alloc = g_alloc_L2M1_lowrate;
            nbands = sample_rate_idx == 2 ? 12 : 8;
        } else if (kbps >= 96 && sample_rate_idx != 1)
        {
            nbands = 30;
        }
    }
    sci->total_bands = (ma_uint8)nbands;
    sci->stereo_bands = (ma_uint8)MA_DR_MP3_MIN(stereo_bands, nbands);
    return alloc;
}
static void ma_dr_mp3_L12_read_scalefactors(ma_dr_mp3_bs *bs, ma_uint8 *pba, ma_uint8 *scfcod, int bands, float *scf)
{
    static const float g_deq_L12[18*3] = {
#define MA_DR_MP3_DQ(x) 9.53674316e-07f/x, 7.56931807e-07f/x, 6.00777173e-07f/x
        MA_DR_MP3_DQ(3),MA_DR_MP3_DQ(7),MA_DR_MP3_DQ(15),MA_DR_MP3_DQ(31),MA_DR_MP3_DQ(63),MA_DR_MP3_DQ(127),MA_DR_MP3_DQ(255),MA_DR_MP3_DQ(511),MA_DR_MP3_DQ(1023),MA_DR_MP3_DQ(2047),MA_DR_MP3_DQ(4095),MA_DR_MP3_DQ(8191),MA_DR_MP3_DQ(16383),MA_DR_MP3_DQ(32767),MA_DR_MP3_DQ(65535),MA_DR_MP3_DQ(3),MA_DR_MP3_DQ(5),MA_DR_MP3_DQ(9)
    };
    int i, m;
    for (i = 0; i < bands; i++)
    {
        float s = 0;
        int ba = *pba++;
        int mask = ba ? 4 + ((19 >> scfcod[i]) & 3) : 0;
        for (m = 4; m; m >>= 1)
        {
            if (mask & m)
            {
                int b = ma_dr_mp3_bs_get_bits(bs, 6);
                s = g_deq_L12[ba*3 - 6 + b % 3]*(int)(1 << 21 >> b/3);
            }
            *scf++ = s;
        }
    }
}
static void ma_dr_mp3_L12_read_scale_info(const ma_uint8 *hdr, ma_dr_mp3_bs *bs, ma_dr_mp3_L12_scale_info *sci)
{
    static const ma_uint8 g_bitalloc_code_tab[] = {
        0,17, 3, 4, 5,6,7, 8,9,10,11,12,13,14,15,16,
        0,17,18, 3,19,4,5, 6,7, 8, 9,10,11,12,13,16,
        0,17,18, 3,19,4,5,16,
        0,17,18,16,
        0,17,18,19, 4,5,6, 7,8, 9,10,11,12,13,14,15,
        0,17,18, 3,19,4,5, 6,7, 8, 9,10,11,12,13,14,
        0, 2, 3, 4, 5,6,7, 8,9,10,11,12,13,14,15,16
    };
    const ma_dr_mp3_L12_subband_alloc *subband_alloc = ma_dr_mp3_L12_subband_alloc_table(hdr, sci);
    int i, k = 0, ba_bits = 0;
    const ma_uint8 *ba_code_tab = g_bitalloc_code_tab;
    for (i = 0; i < sci->total_bands; i++)
    {
        ma_uint8 ba;
        if (i == k)
        {
            k += subband_alloc->band_count;
            ba_bits = subband_alloc->code_tab_width;
            ba_code_tab = g_bitalloc_code_tab + subband_alloc->tab_offset;
            subband_alloc++;
        }
        ba = ba_code_tab[ma_dr_mp3_bs_get_bits(bs, ba_bits)];
        sci->bitalloc[2*i] = ba;
        if (i < sci->stereo_bands)
        {
            ba = ba_code_tab[ma_dr_mp3_bs_get_bits(bs, ba_bits)];
        }
        sci->bitalloc[2*i + 1] = sci->stereo_bands ? ba : 0;
    }
    for (i = 0; i < 2*sci->total_bands; i++)
    {
        sci->scfcod[i] = (ma_uint8)(sci->bitalloc[i] ? MA_DR_MP3_HDR_IS_LAYER_1(hdr) ? 2 : ma_dr_mp3_bs_get_bits(bs, 2) : 6);
    }
    ma_dr_mp3_L12_read_scalefactors(bs, sci->bitalloc, sci->scfcod, sci->total_bands*2, sci->scf);
    for (i = sci->stereo_bands; i < sci->total_bands; i++)
    {
        sci->bitalloc[2*i + 1] = 0;
    }
}
static int ma_dr_mp3_L12_dequantize_granule(float *grbuf, ma_dr_mp3_bs *bs, ma_dr_mp3_L12_scale_info *sci, int group_size)
{
    int i, j, k, choff = 576;
    for (j = 0; j < 4; j++)
    {
        float *dst = grbuf + group_size*j;
        for (i = 0; i < 2*sci->total_bands; i++)
        {
            int ba = sci->bitalloc[i];
            if (ba != 0)
            {
                if (ba < 17)
                {
                    int half = (1 << (ba - 1)) - 1;
                    for (k = 0; k < group_size; k++)
                    {
                        dst[k] = (float)((int)ma_dr_mp3_bs_get_bits(bs, ba) - half);
                    }
                } else
                {
                    unsigned mod = (2 << (ba - 17)) + 1;
                    unsigned code = ma_dr_mp3_bs_get_bits(bs, mod + 2 - (mod >> 3));
                    for (k = 0; k < group_size; k++, code /= mod)
                    {
                        dst[k] = (float)((int)(code % mod - mod/2));
                    }
                }
            }
            dst += choff;
            choff = 18 - choff;
        }
    }
    return group_size*4;
}
static void ma_dr_mp3_L12_apply_scf_384(ma_dr_mp3_L12_scale_info *sci, const float *scf, float *dst)
{
    int i, k;
    MA_DR_MP3_COPY_MEMORY(dst + 576 + sci->stereo_bands*18, dst + sci->stereo_bands*18, (sci->total_bands - sci->stereo_bands)*18*sizeof(float));
    for (i = 0; i < sci->total_bands; i++, dst += 18, scf += 6)
    {
        for (k = 0; k < 12; k++)
        {
            dst[k + 0]   *= scf[0];
            dst[k + 576] *= scf[3];
        }
    }
}
#endif
static int ma_dr_mp3_L3_read_side_info(ma_dr_mp3_bs *bs, ma_dr_mp3_L3_gr_info *gr, const ma_uint8 *hdr)
{
    static const ma_uint8 g_scf_long[8][23] = {
        { 6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54,0 },
        { 12,12,12,12,12,12,16,20,24,28,32,40,48,56,64,76,90,2,2,2,2,2,0 },
        { 6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54,0 },
        { 6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,54,62,70,76,36,0 },
        { 6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54,0 },
        { 4,4,4,4,4,4,6,6,8,8,10,12,16,20,24,28,34,42,50,54,76,158,0 },
        { 4,4,4,4,4,4,6,6,6,8,10,12,16,18,22,28,34,40,46,54,54,192,0 },
        { 4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102,26,0 }
    };
    static const ma_uint8 g_scf_short[8][40] = {
        { 4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },
        { 8,8,8,8,8,8,8,8,8,12,12,12,16,16,16,20,20,20,24,24,24,28,28,28,36,36,36,2,2,2,2,2,2,2,2,2,26,26,26,0 },
        { 4,4,4,4,4,4,4,4,4,6,6,6,6,6,6,8,8,8,10,10,10,14,14,14,18,18,18,26,26,26,32,32,32,42,42,42,18,18,18,0 },
        { 4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,32,32,32,44,44,44,12,12,12,0 },
        { 4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },
        { 4,4,4,4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,22,22,22,30,30,30,56,56,56,0 },
        { 4,4,4,4,4,4,4,4,4,4,4,4,6,6,6,6,6,6,10,10,10,12,12,12,14,14,14,16,16,16,20,20,20,26,26,26,66,66,66,0 },
        { 4,4,4,4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,12,12,12,16,16,16,20,20,20,26,26,26,34,34,34,42,42,42,12,12,12,0 }
    };
    static const ma_uint8 g_scf_mixed[8][40] = {
        { 6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },
        { 12,12,12,4,4,4,8,8,8,12,12,12,16,16,16,20,20,20,24,24,24,28,28,28,36,36,36,2,2,2,2,2,2,2,2,2,26,26,26,0 },
        { 6,6,6,6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,14,14,14,18,18,18,26,26,26,32,32,32,42,42,42,18,18,18,0 },
        { 6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,32,32,32,44,44,44,12,12,12,0 },
        { 6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },
        { 4,4,4,4,4,4,6,6,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,22,22,22,30,30,30,56,56,56,0 },
        { 4,4,4,4,4,4,6,6,4,4,4,6,6,6,6,6,6,10,10,10,12,12,12,14,14,14,16,16,16,20,20,20,26,26,26,66,66,66,0 },
        { 4,4,4,4,4,4,6,6,4,4,4,6,6,6,8,8,8,12,12,12,16,16,16,20,20,20,26,26,26,34,34,34,42,42,42,12,12,12,0 }
    };
    unsigned tables, scfsi = 0;
    int main_data_begin, part_23_sum = 0;
    int gr_count = MA_DR_MP3_HDR_IS_MONO(hdr) ? 1 : 2;
    int sr_idx = MA_DR_MP3_HDR_GET_MY_SAMPLE_RATE(hdr); sr_idx -= (sr_idx != 0);
    if (MA_DR_MP3_HDR_TEST_MPEG1(hdr))
    {
        gr_count *= 2;
        main_data_begin = ma_dr_mp3_bs_get_bits(bs, 9);
        scfsi = ma_dr_mp3_bs_get_bits(bs, 7 + gr_count);
    } else
    {
        main_data_begin = ma_dr_mp3_bs_get_bits(bs, 8 + gr_count) >> gr_count;
    }
    do
    {
        if (MA_DR_MP3_HDR_IS_MONO(hdr))
        {
            scfsi <<= 4;
        }
        gr->part_23_length = (ma_uint16)ma_dr_mp3_bs_get_bits(bs, 12);
        part_23_sum += gr->part_23_length;
        gr->big_values = (ma_uint16)ma_dr_mp3_bs_get_bits(bs,  9);
        if (gr->big_values > 288)
        {
            return -1;
        }
        gr->global_gain = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 8);
        gr->scalefac_compress = (ma_uint16)ma_dr_mp3_bs_get_bits(bs, MA_DR_MP3_HDR_TEST_MPEG1(hdr) ? 4 : 9);
        gr->sfbtab = g_scf_long[sr_idx];
        gr->n_long_sfb  = 22;
        gr->n_short_sfb = 0;
        if (ma_dr_mp3_bs_get_bits(bs, 1))
        {
            gr->block_type = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 2);
            if (!gr->block_type)
            {
                return -1;
            }
            gr->mixed_block_flag = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 1);
            gr->region_count[0] = 7;
            gr->region_count[1] = 255;
            if (gr->block_type == MA_DR_MP3_SHORT_BLOCK_TYPE)
            {
                scfsi &= 0x0F0F;
                if (!gr->mixed_block_flag)
                {
                    gr->region_count[0] = 8;
                    gr->sfbtab = g_scf_short[sr_idx];
                    gr->n_long_sfb = 0;
                    gr->n_short_sfb = 39;
                } else
                {
                    gr->sfbtab = g_scf_mixed[sr_idx];
                    gr->n_long_sfb = MA_DR_MP3_HDR_TEST_MPEG1(hdr) ? 8 : 6;
                    gr->n_short_sfb = 30;
                }
            }
            tables = ma_dr_mp3_bs_get_bits(bs, 10);
            tables <<= 5;
            gr->subblock_gain[0] = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 3);
            gr->subblock_gain[1] = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 3);
            gr->subblock_gain[2] = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 3);
        } else
        {
            gr->block_type = 0;
            gr->mixed_block_flag = 0;
            tables = ma_dr_mp3_bs_get_bits(bs, 15);
            gr->region_count[0] = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 4);
            gr->region_count[1] = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 3);
            gr->region_count[2] = 255;
        }
        gr->table_select[0] = (ma_uint8)(tables >> 10);
        gr->table_select[1] = (ma_uint8)((tables >> 5) & 31);
        gr->table_select[2] = (ma_uint8)((tables) & 31);
        gr->preflag = (ma_uint8)(MA_DR_MP3_HDR_TEST_MPEG1(hdr) ? ma_dr_mp3_bs_get_bits(bs, 1) : (gr->scalefac_compress >= 500));
        gr->scalefac_scale = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 1);
        gr->count1_table = (ma_uint8)ma_dr_mp3_bs_get_bits(bs, 1);
        gr->scfsi = (ma_uint8)((scfsi >> 12) & 15);
        scfsi <<= 4;
        gr++;
    } while(--gr_count);
    if (part_23_sum + bs->pos > bs->limit + main_data_begin*8)
    {
        return -1;
    }
    return main_data_begin;
}
static void ma_dr_mp3_L3_read_scalefactors(ma_uint8 *scf, ma_uint8 *ist_pos, const ma_uint8 *scf_size, const ma_uint8 *scf_count, ma_dr_mp3_bs *bitbuf, int scfsi)
{
    int i, k;
    for (i = 0; i < 4 && scf_count[i]; i++, scfsi *= 2)
    {
        int cnt = scf_count[i];
        if (scfsi & 8)
        {
            MA_DR_MP3_COPY_MEMORY(scf, ist_pos, cnt);
        } else
        {
            int bits = scf_size[i];
            if (!bits)
            {
                MA_DR_MP3_ZERO_MEMORY(scf, cnt);
                MA_DR_MP3_ZERO_MEMORY(ist_pos, cnt);
            } else
            {
                int max_scf = (scfsi < 0) ? (1 << bits) - 1 : -1;
                for (k = 0; k < cnt; k++)
                {
                    int s = ma_dr_mp3_bs_get_bits(bitbuf, bits);
                    ist_pos[k] = (ma_uint8)(s == max_scf ? -1 : s);
                    scf[k] = (ma_uint8)s;
                }
            }
        }
        ist_pos += cnt;
        scf += cnt;
    }
    scf[0] = scf[1] = scf[2] = 0;
}
static float ma_dr_mp3_L3_ldexp_q2(float y, int exp_q2)
{
    static const float g_expfrac[4] = { 9.31322575e-10f,7.83145814e-10f,6.58544508e-10f,5.53767716e-10f };
    int e;
    do
    {
        e = MA_DR_MP3_MIN(30*4, exp_q2);
        y *= g_expfrac[e & 3]*(1 << 30 >> (e >> 2));
    } while ((exp_q2 -= e) > 0);
    return y;
}
static void ma_dr_mp3_L3_decode_scalefactors(const ma_uint8 *hdr, ma_uint8 *ist_pos, ma_dr_mp3_bs *bs, const ma_dr_mp3_L3_gr_info *gr, float *scf, int ch)
{
    static const ma_uint8 g_scf_partitions[3][28] = {
        { 6,5,5, 5,6,5,5,5,6,5, 7,3,11,10,0,0, 7, 7, 7,0, 6, 6,6,3, 8, 8,5,0 },
        { 8,9,6,12,6,9,9,9,6,9,12,6,15,18,0,0, 6,15,12,0, 6,12,9,6, 6,18,9,0 },
        { 9,9,6,12,9,9,9,9,9,9,12,6,18,18,0,0,12,12,12,0,12, 9,9,6,15,12,9,0 }
    };
    const ma_uint8 *scf_partition = g_scf_partitions[!!gr->n_short_sfb + !gr->n_long_sfb];
    ma_uint8 scf_size[4], iscf[40];
    int i, scf_shift = gr->scalefac_scale + 1, gain_exp, scfsi = gr->scfsi;
    float gain;
    if (MA_DR_MP3_HDR_TEST_MPEG1(hdr))
    {
        static const ma_uint8 g_scfc_decode[16] = { 0,1,2,3, 12,5,6,7, 9,10,11,13, 14,15,18,19 };
        int part = g_scfc_decode[gr->scalefac_compress];
        scf_size[1] = scf_size[0] = (ma_uint8)(part >> 2);
        scf_size[3] = scf_size[2] = (ma_uint8)(part & 3);
    } else
    {
        static const ma_uint8 g_mod[6*4] = { 5,5,4,4,5,5,4,1,4,3,1,1,5,6,6,1,4,4,4,1,4,3,1,1 };
        int k, modprod, sfc, ist = MA_DR_MP3_HDR_TEST_I_STEREO(hdr) && ch;
        sfc = gr->scalefac_compress >> ist;
        for (k = ist*3*4; sfc >= 0; sfc -= modprod, k += 4)
        {
            for (modprod = 1, i = 3; i >= 0; i--)
            {
                scf_size[i] = (ma_uint8)(sfc / modprod % g_mod[k + i]);
                modprod *= g_mod[k + i];
            }
        }
        scf_partition += k;
        scfsi = -16;
    }
    ma_dr_mp3_L3_read_scalefactors(iscf, ist_pos, scf_size, scf_partition, bs, scfsi);
    if (gr->n_short_sfb)
    {
        int sh = 3 - scf_shift;
        for (i = 0; i < gr->n_short_sfb; i += 3)
        {
            iscf[gr->n_long_sfb + i + 0] = (ma_uint8)(iscf[gr->n_long_sfb + i + 0] + (gr->subblock_gain[0] << sh));
            iscf[gr->n_long_sfb + i + 1] = (ma_uint8)(iscf[gr->n_long_sfb + i + 1] + (gr->subblock_gain[1] << sh));
            iscf[gr->n_long_sfb + i + 2] = (ma_uint8)(iscf[gr->n_long_sfb + i + 2] + (gr->subblock_gain[2] << sh));
        }
    } else if (gr->preflag)
    {
        static const ma_uint8 g_preamp[10] = { 1,1,1,1,2,2,3,3,3,2 };
        for (i = 0; i < 10; i++)
        {
            iscf[11 + i] = (ma_uint8)(iscf[11 + i] + g_preamp[i]);
        }
    }
    gain_exp = gr->global_gain + MA_DR_MP3_BITS_DEQUANTIZER_OUT*4 - 210 - (MA_DR_MP3_HDR_IS_MS_STEREO(hdr) ? 2 : 0);
    gain = ma_dr_mp3_L3_ldexp_q2(1 << (MA_DR_MP3_MAX_SCFI/4),  MA_DR_MP3_MAX_SCFI - gain_exp);
    for (i = 0; i < (int)(gr->n_long_sfb + gr->n_short_sfb); i++)
    {
        scf[i] = ma_dr_mp3_L3_ldexp_q2(gain, iscf[i] << scf_shift);
    }
}
static const float g_ma_dr_mp3_pow43[129 + 16] = {
    0,-1,-2.519842f,-4.326749f,-6.349604f,-8.549880f,-10.902724f,-13.390518f,-16.000000f,-18.720754f,-21.544347f,-24.463781f,-27.473142f,-30.567351f,-33.741992f,-36.993181f,
    0,1,2.519842f,4.326749f,6.349604f,8.549880f,10.902724f,13.390518f,16.000000f,18.720754f,21.544347f,24.463781f,27.473142f,30.567351f,33.741992f,36.993181f,40.317474f,43.711787f,47.173345f,50.699631f,54.288352f,57.937408f,61.644865f,65.408941f,69.227979f,73.100443f,77.024898f,81.000000f,85.024491f,89.097188f,93.216975f,97.382800f,101.593667f,105.848633f,110.146801f,114.487321f,118.869381f,123.292209f,127.755065f,132.257246f,136.798076f,141.376907f,145.993119f,150.646117f,155.335327f,160.060199f,164.820202f,169.614826f,174.443577f,179.305980f,184.201575f,189.129918f,194.090580f,199.083145f,204.107210f,209.162385f,214.248292f,219.364564f,224.510845f,229.686789f,234.892058f,240.126328f,245.389280f,250.680604f,256.000000f,261.347174f,266.721841f,272.123723f,277.552547f,283.008049f,288.489971f,293.998060f,299.532071f,305.091761f,310.676898f,316.287249f,321.922592f,327.582707f,333.267377f,338.976394f,344.709550f,350.466646f,356.247482f,362.051866f,367.879608f,373.730522f,379.604427f,385.501143f,391.420496f,397.362314f,403.326427f,409.312672f,415.320884f,421.350905f,427.402579f,433.475750f,439.570269f,445.685987f,451.822757f,457.980436f,464.158883f,470.357960f,476.577530f,482.817459f,489.077615f,495.357868f,501.658090f,507.978156f,514.317941f,520.677324f,527.056184f,533.454404f,539.871867f,546.308458f,552.764065f,559.238575f,565.731879f,572.243870f,578.774440f,585.323483f,591.890898f,598.476581f,605.080431f,611.702349f,618.342238f,625.000000f,631.675540f,638.368763f,645.079578f
};
static float ma_dr_mp3_L3_pow_43(int x)
{
    float frac;
    int sign, mult = 256;
    if (x < 129)
    {
        return g_ma_dr_mp3_pow43[16 + x];
    }
    if (x < 1024)
    {
        mult = 16;
        x <<= 3;
    }
    sign = 2*x & 64;
    frac = (float)((x & 63) - sign) / ((x & ~63) + sign);
    return g_ma_dr_mp3_pow43[16 + ((x + sign) >> 6)]*(1.f + frac*((4.f/3) + frac*(2.f/9)))*mult;
}
static void ma_dr_mp3_L3_huffman(float *dst, ma_dr_mp3_bs *bs, const ma_dr_mp3_L3_gr_info *gr_info, const float *scf, int layer3gr_limit)
{
    static const ma_int16 tabs[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        785,785,785,785,784,784,784,784,513,513,513,513,513,513,513,513,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,
        -255,1313,1298,1282,785,785,785,785,784,784,784,784,769,769,769,769,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,290,288,
        -255,1313,1298,1282,769,769,769,769,529,529,529,529,529,529,529,529,528,528,528,528,528,528,528,528,512,512,512,512,512,512,512,512,290,288,
        -253,-318,-351,-367,785,785,785,785,784,784,784,784,769,769,769,769,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,819,818,547,547,275,275,275,275,561,560,515,546,289,274,288,258,
        -254,-287,1329,1299,1314,1312,1057,1057,1042,1042,1026,1026,784,784,784,784,529,529,529,529,529,529,529,529,769,769,769,769,768,768,768,768,563,560,306,306,291,259,
        -252,-413,-477,-542,1298,-575,1041,1041,784,784,784,784,769,769,769,769,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,-383,-399,1107,1092,1106,1061,849,849,789,789,1104,1091,773,773,1076,1075,341,340,325,309,834,804,577,577,532,532,516,516,832,818,803,816,561,561,531,531,515,546,289,289,288,258,
        -252,-429,-493,-559,1057,1057,1042,1042,529,529,529,529,529,529,529,529,784,784,784,784,769,769,769,769,512,512,512,512,512,512,512,512,-382,1077,-415,1106,1061,1104,849,849,789,789,1091,1076,1029,1075,834,834,597,581,340,340,339,324,804,833,532,532,832,772,818,803,817,787,816,771,290,290,290,290,288,258,
        -253,-349,-414,-447,-463,1329,1299,-479,1314,1312,1057,1057,1042,1042,1026,1026,785,785,785,785,784,784,784,784,769,769,769,769,768,768,768,768,-319,851,821,-335,836,850,805,849,341,340,325,336,533,533,579,579,564,564,773,832,578,548,563,516,321,276,306,291,304,259,
        -251,-572,-733,-830,-863,-879,1041,1041,784,784,784,784,769,769,769,769,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,-511,-527,-543,1396,1351,1381,1366,1395,1335,1380,-559,1334,1138,1138,1063,1063,1350,1392,1031,1031,1062,1062,1364,1363,1120,1120,1333,1348,881,881,881,881,375,374,359,373,343,358,341,325,791,791,1123,1122,-703,1105,1045,-719,865,865,790,790,774,774,1104,1029,338,293,323,308,-799,-815,833,788,772,818,803,816,322,292,307,320,561,531,515,546,289,274,288,258,
        -251,-525,-605,-685,-765,-831,-846,1298,1057,1057,1312,1282,785,785,785,785,784,784,784,784,769,769,769,769,512,512,512,512,512,512,512,512,1399,1398,1383,1367,1382,1396,1351,-511,1381,1366,1139,1139,1079,1079,1124,1124,1364,1349,1363,1333,882,882,882,882,807,807,807,807,1094,1094,1136,1136,373,341,535,535,881,775,867,822,774,-591,324,338,-671,849,550,550,866,864,609,609,293,336,534,534,789,835,773,-751,834,804,308,307,833,788,832,772,562,562,547,547,305,275,560,515,290,290,
        -252,-397,-477,-557,-622,-653,-719,-735,-750,1329,1299,1314,1057,1057,1042,1042,1312,1282,1024,1024,785,785,785,785,784,784,784,784,769,769,769,769,-383,1127,1141,1111,1126,1140,1095,1110,869,869,883,883,1079,1109,882,882,375,374,807,868,838,881,791,-463,867,822,368,263,852,837,836,-543,610,610,550,550,352,336,534,534,865,774,851,821,850,805,593,533,579,564,773,832,578,578,548,548,577,577,307,276,306,291,516,560,259,259,
        -250,-2107,-2507,-2764,-2909,-2974,-3007,-3023,1041,1041,1040,1040,769,769,769,769,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,-767,-1052,-1213,-1277,-1358,-1405,-1469,-1535,-1550,-1582,-1614,-1647,-1662,-1694,-1726,-1759,-1774,-1807,-1822,-1854,-1886,1565,-1919,-1935,-1951,-1967,1731,1730,1580,1717,-1983,1729,1564,-1999,1548,-2015,-2031,1715,1595,-2047,1714,-2063,1610,-2079,1609,-2095,1323,1323,1457,1457,1307,1307,1712,1547,1641,1700,1699,1594,1685,1625,1442,1442,1322,1322,-780,-973,-910,1279,1278,1277,1262,1276,1261,1275,1215,1260,1229,-959,974,974,989,989,-943,735,478,478,495,463,506,414,-1039,1003,958,1017,927,942,987,957,431,476,1272,1167,1228,-1183,1256,-1199,895,895,941,941,1242,1227,1212,1135,1014,1014,490,489,503,487,910,1013,985,925,863,894,970,955,1012,847,-1343,831,755,755,984,909,428,366,754,559,-1391,752,486,457,924,997,698,698,983,893,740,740,908,877,739,739,667,667,953,938,497,287,271,271,683,606,590,712,726,574,302,302,738,736,481,286,526,725,605,711,636,724,696,651,589,681,666,710,364,467,573,695,466,466,301,465,379,379,709,604,665,679,316,316,634,633,436,436,464,269,424,394,452,332,438,363,347,408,393,448,331,422,362,407,392,421,346,406,391,376,375,359,1441,1306,-2367,1290,-2383,1337,-2399,-2415,1426,1321,-2431,1411,1336,-2447,-2463,-2479,1169,1169,1049,1049,1424,1289,1412,1352,1319,-2495,1154,1154,1064,1064,1153,1153,416,390,360,404,403,389,344,374,373,343,358,372,327,357,342,311,356,326,1395,1394,1137,1137,1047,1047,1365,1392,1287,1379,1334,1364,1349,1378,1318,1363,792,792,792,792,1152,1152,1032,1032,1121,1121,1046,1046,1120,1120,1030,1030,-2895,1106,1061,1104,849,849,789,789,1091,1076,1029,1090,1060,1075,833,833,309,324,532,532,832,772,818,803,561,561,531,560,515,546,289,274,288,258,
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    static const ma_uint8 tab32[] = { 130,162,193,209,44,28,76,140,9,9,9,9,9,9,9,9,190,254,222,238,126,94,157,157,109,61,173,205};
    static const ma_uint8 tab33[] = { 252,236,220,204,188,172,156,140,124,108,92,76,60,44,28,12 };
    static const ma_int16 tabindex[2*16] = { 0,32,64,98,0,132,180,218,292,364,426,538,648,746,0,1126,1460,1460,1460,1460,1460,1460,1460,1460,1842,1842,1842,1842,1842,1842,1842,1842 };
    static const ma_uint8 g_linbits[] =  { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,3,4,6,8,10,13,4,5,6,7,8,9,11,13 };
#define MA_DR_MP3_PEEK_BITS(n)    (bs_cache >> (32 - (n)))
#define MA_DR_MP3_FLUSH_BITS(n)   { bs_cache <<= (n); bs_sh += (n); }
#define MA_DR_MP3_CHECK_BITS      while (bs_sh >= 0) { bs_cache |= (ma_uint32)*bs_next_ptr++ << bs_sh; bs_sh -= 8; }
#define MA_DR_MP3_BSPOS           ((bs_next_ptr - bs->buf)*8 - 24 + bs_sh)
    float one = 0.0f;
    int ireg = 0, big_val_cnt = gr_info->big_values;
    const ma_uint8 *sfb = gr_info->sfbtab;
    const ma_uint8 *bs_next_ptr = bs->buf + bs->pos/8;
    ma_uint32 bs_cache = (((bs_next_ptr[0]*256u + bs_next_ptr[1])*256u + bs_next_ptr[2])*256u + bs_next_ptr[3]) << (bs->pos & 7);
    int pairs_to_decode, np, bs_sh = (bs->pos & 7) - 8;
    bs_next_ptr += 4;
    while (big_val_cnt > 0)
    {
        int tab_num = gr_info->table_select[ireg];
        int sfb_cnt = gr_info->region_count[ireg++];
        const ma_int16 *codebook = tabs + tabindex[tab_num];
        int linbits = g_linbits[tab_num];
        if (linbits)
        {
            do
            {
                np = *sfb++ / 2;
                pairs_to_decode = MA_DR_MP3_MIN(big_val_cnt, np);
                one = *scf++;
                do
                {
                    int j, w = 5;
                    int leaf = codebook[MA_DR_MP3_PEEK_BITS(w)];
                    while (leaf < 0)
                    {
                        MA_DR_MP3_FLUSH_BITS(w);
                        w = leaf & 7;
                        leaf = codebook[MA_DR_MP3_PEEK_BITS(w) - (leaf >> 3)];
                    }
                    MA_DR_MP3_FLUSH_BITS(leaf >> 8);
                    for (j = 0; j < 2; j++, dst++, leaf >>= 4)
                    {
                        int lsb = leaf & 0x0F;
                        if (lsb == 15)
                        {
                            lsb += MA_DR_MP3_PEEK_BITS(linbits);
                            MA_DR_MP3_FLUSH_BITS(linbits);
                            MA_DR_MP3_CHECK_BITS;
                            *dst = one*ma_dr_mp3_L3_pow_43(lsb)*((ma_int32)bs_cache < 0 ? -1: 1);
                        } else
                        {
                            *dst = g_ma_dr_mp3_pow43[16 + lsb - 16*(bs_cache >> 31)]*one;
                        }
                        MA_DR_MP3_FLUSH_BITS(lsb ? 1 : 0);
                    }
                    MA_DR_MP3_CHECK_BITS;
                } while (--pairs_to_decode);
            } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);
        } else
        {
            do
            {
                np = *sfb++ / 2;
                pairs_to_decode = MA_DR_MP3_MIN(big_val_cnt, np);
                one = *scf++;
                do
                {
                    int j, w = 5;
                    int leaf = codebook[MA_DR_MP3_PEEK_BITS(w)];
                    while (leaf < 0)
                    {
                        MA_DR_MP3_FLUSH_BITS(w);
                        w = leaf & 7;
                        leaf = codebook[MA_DR_MP3_PEEK_BITS(w) - (leaf >> 3)];
                    }
                    MA_DR_MP3_FLUSH_BITS(leaf >> 8);
                    for (j = 0; j < 2; j++, dst++, leaf >>= 4)
                    {
                        int lsb = leaf & 0x0F;
                        *dst = g_ma_dr_mp3_pow43[16 + lsb - 16*(bs_cache >> 31)]*one;
                        MA_DR_MP3_FLUSH_BITS(lsb ? 1 : 0);
                    }
                    MA_DR_MP3_CHECK_BITS;
                } while (--pairs_to_decode);
            } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);
        }
    }
    for (np = 1 - big_val_cnt;; dst += 4)
    {
        const ma_uint8 *codebook_count1 = (gr_info->count1_table) ? tab33 : tab32;
        int leaf = codebook_count1[MA_DR_MP3_PEEK_BITS(4)];
        if (!(leaf & 8))
        {
            leaf = codebook_count1[(leaf >> 3) + (bs_cache << 4 >> (32 - (leaf & 3)))];
        }
        MA_DR_MP3_FLUSH_BITS(leaf & 7);
        if (MA_DR_MP3_BSPOS > layer3gr_limit)
        {
            break;
        }
#define MA_DR_MP3_RELOAD_SCALEFACTOR  if (!--np) { np = *sfb++/2; if (!np) break; one = *scf++; }
#define MA_DR_MP3_DEQ_COUNT1(s) if (leaf & (128 >> s)) { dst[s] = ((ma_int32)bs_cache < 0) ? -one : one; MA_DR_MP3_FLUSH_BITS(1) }
        MA_DR_MP3_RELOAD_SCALEFACTOR;
        MA_DR_MP3_DEQ_COUNT1(0);
        MA_DR_MP3_DEQ_COUNT1(1);
        MA_DR_MP3_RELOAD_SCALEFACTOR;
        MA_DR_MP3_DEQ_COUNT1(2);
        MA_DR_MP3_DEQ_COUNT1(3);
        MA_DR_MP3_CHECK_BITS;
    }
    bs->pos = layer3gr_limit;
}
static void ma_dr_mp3_L3_midside_stereo(float *left, int n)
{
    int i = 0;
    float *right = left + 576;
#if MA_DR_MP3_HAVE_SIMD
    if (ma_dr_mp3_have_simd())
    {
        for (; i < n - 3; i += 4)
        {
            ma_dr_mp3_f4 vl = MA_DR_MP3_VLD(left + i);
            ma_dr_mp3_f4 vr = MA_DR_MP3_VLD(right + i);
            MA_DR_MP3_VSTORE(left + i, MA_DR_MP3_VADD(vl, vr));
            MA_DR_MP3_VSTORE(right + i, MA_DR_MP3_VSUB(vl, vr));
        }
#ifdef __GNUC__
        if (__builtin_constant_p(n % 4 == 0) && n % 4 == 0)
            return;
#endif
    }
#endif
    for (; i < n; i++)
    {
        float a = left[i];
        float b = right[i];
        left[i] = a + b;
        right[i] = a - b;
    }
}
static void ma_dr_mp3_L3_intensity_stereo_band(float *left, int n, float kl, float kr)
{
    int i;
    for (i = 0; i < n; i++)
    {
        left[i + 576] = left[i]*kr;
        left[i] = left[i]*kl;
    }
}
static void ma_dr_mp3_L3_stereo_top_band(const float *right, const ma_uint8 *sfb, int nbands, int max_band[3])
{
    int i, k;
    max_band[0] = max_band[1] = max_band[2] = -1;
    for (i = 0; i < nbands; i++)
    {
        for (k = 0; k < sfb[i]; k += 2)
        {
            if (right[k] != 0 || right[k + 1] != 0)
            {
                max_band[i % 3] = i;
                break;
            }
        }
        right += sfb[i];
    }
}
static void ma_dr_mp3_L3_stereo_process(float *left, const ma_uint8 *ist_pos, const ma_uint8 *sfb, const ma_uint8 *hdr, int max_band[3], int mpeg2_sh)
{
    static const float g_pan[7*2] = { 0,1,0.21132487f,0.78867513f,0.36602540f,0.63397460f,0.5f,0.5f,0.63397460f,0.36602540f,0.78867513f,0.21132487f,1,0 };
    unsigned i, max_pos = MA_DR_MP3_HDR_TEST_MPEG1(hdr) ? 7 : 64;
    for (i = 0; sfb[i]; i++)
    {
        unsigned ipos = ist_pos[i];
        if ((int)i > max_band[i % 3] && ipos < max_pos)
        {
            float kl, kr, s = MA_DR_MP3_HDR_TEST_MS_STEREO(hdr) ? 1.41421356f : 1;
            if (MA_DR_MP3_HDR_TEST_MPEG1(hdr))
            {
                kl = g_pan[2*ipos];
                kr = g_pan[2*ipos + 1];
            } else
            {
                kl = 1;
                kr = ma_dr_mp3_L3_ldexp_q2(1, (ipos + 1) >> 1 << mpeg2_sh);
                if (ipos & 1)
                {
                    kl = kr;
                    kr = 1;
                }
            }
            ma_dr_mp3_L3_intensity_stereo_band(left, sfb[i], kl*s, kr*s);
        } else if (MA_DR_MP3_HDR_TEST_MS_STEREO(hdr))
        {
            ma_dr_mp3_L3_midside_stereo(left, sfb[i]);
        }
        left += sfb[i];
    }
}
static void ma_dr_mp3_L3_intensity_stereo(float *left, ma_uint8 *ist_pos, const ma_dr_mp3_L3_gr_info *gr, const ma_uint8 *hdr)
{
    int max_band[3], n_sfb = gr->n_long_sfb + gr->n_short_sfb;
    int i, max_blocks = gr->n_short_sfb ? 3 : 1;
    ma_dr_mp3_L3_stereo_top_band(left + 576, gr->sfbtab, n_sfb, max_band);
    if (gr->n_long_sfb)
    {
        max_band[0] = max_band[1] = max_band[2] = MA_DR_MP3_MAX(MA_DR_MP3_MAX(max_band[0], max_band[1]), max_band[2]);
    }
    for (i = 0; i < max_blocks; i++)
    {
        int default_pos = MA_DR_MP3_HDR_TEST_MPEG1(hdr) ? 3 : 0;
        int itop = n_sfb - max_blocks + i;
        int prev = itop - max_blocks;
        ist_pos[itop] = (ma_uint8)(max_band[i] >= prev ? default_pos : ist_pos[prev]);
    }
    ma_dr_mp3_L3_stereo_process(left, ist_pos, gr->sfbtab, hdr, max_band, gr[1].scalefac_compress & 1);
}
static void ma_dr_mp3_L3_reorder(float *grbuf, float *scratch, const ma_uint8 *sfb)
{
    int i, len;
    float *src = grbuf, *dst = scratch;
    for (;0 != (len = *sfb); sfb += 3, src += 2*len)
    {
        for (i = 0; i < len; i++, src++)
        {
            *dst++ = src[0*len];
            *dst++ = src[1*len];
            *dst++ = src[2*len];
        }
    }
    MA_DR_MP3_COPY_MEMORY(grbuf, scratch, (dst - scratch)*sizeof(float));
}
static void ma_dr_mp3_L3_antialias(float *grbuf, int nbands)
{
    static const float g_aa[2][8] = {
        {0.85749293f,0.88174200f,0.94962865f,0.98331459f,0.99551782f,0.99916056f,0.99989920f,0.99999316f},
        {0.51449576f,0.47173197f,0.31337745f,0.18191320f,0.09457419f,0.04096558f,0.01419856f,0.00369997f}
    };
    for (; nbands > 0; nbands--, grbuf += 18)
    {
        int i = 0;
#if MA_DR_MP3_HAVE_SIMD
        if (ma_dr_mp3_have_simd()) for (; i < 8; i += 4)
        {
            ma_dr_mp3_f4 vu = MA_DR_MP3_VLD(grbuf + 18 + i);
            ma_dr_mp3_f4 vd = MA_DR_MP3_VLD(grbuf + 14 - i);
            ma_dr_mp3_f4 vc0 = MA_DR_MP3_VLD(g_aa[0] + i);
            ma_dr_mp3_f4 vc1 = MA_DR_MP3_VLD(g_aa[1] + i);
            vd = MA_DR_MP3_VREV(vd);
            MA_DR_MP3_VSTORE(grbuf + 18 + i, MA_DR_MP3_VSUB(MA_DR_MP3_VMUL(vu, vc0), MA_DR_MP3_VMUL(vd, vc1)));
            vd = MA_DR_MP3_VADD(MA_DR_MP3_VMUL(vu, vc1), MA_DR_MP3_VMUL(vd, vc0));
            MA_DR_MP3_VSTORE(grbuf + 14 - i, MA_DR_MP3_VREV(vd));
        }
#endif
#ifndef MA_DR_MP3_ONLY_SIMD
        for(; i < 8; i++)
        {
            float u = grbuf[18 + i];
            float d = grbuf[17 - i];
            grbuf[18 + i] = u*g_aa[0][i] - d*g_aa[1][i];
            grbuf[17 - i] = u*g_aa[1][i] + d*g_aa[0][i];
        }
#endif
    }
}
static void ma_dr_mp3_L3_dct3_9(float *y)
{
    float s0, s1, s2, s3, s4, s5, s6, s7, s8, t0, t2, t4;
    s0 = y[0]; s2 = y[2]; s4 = y[4]; s6 = y[6]; s8 = y[8];
    t0 = s0 + s6*0.5f;
    s0 -= s6;
    t4 = (s4 + s2)*0.93969262f;
    t2 = (s8 + s2)*0.76604444f;
    s6 = (s4 - s8)*0.17364818f;
    s4 += s8 - s2;
    s2 = s0 - s4*0.5f;
    y[4] = s4 + s0;
    s8 = t0 - t2 + s6;
    s0 = t0 - t4 + t2;
    s4 = t0 + t4 - s6;
    s1 = y[1]; s3 = y[3]; s5 = y[5]; s7 = y[7];
    s3 *= 0.86602540f;
    t0 = (s5 + s1)*0.98480775f;
    t4 = (s5 - s7)*0.34202014f;
    t2 = (s1 + s7)*0.64278761f;
    s1 = (s1 - s5 - s7)*0.86602540f;
    s5 = t0 - s3 - t2;
    s7 = t4 - s3 - t0;
    s3 = t4 + s3 - t2;
    y[0] = s4 - s7;
    y[1] = s2 + s1;
    y[2] = s0 - s3;
    y[3] = s8 + s5;
    y[5] = s8 - s5;
    y[6] = s0 + s3;
    y[7] = s2 - s1;
    y[8] = s4 + s7;
}
static void ma_dr_mp3_L3_imdct36(float *grbuf, float *overlap, const float *window, int nbands)
{
    int i, j;
    static const float g_twid9[18] = {
        0.73727734f,0.79335334f,0.84339145f,0.88701083f,0.92387953f,0.95371695f,0.97629601f,0.99144486f,0.99904822f,0.67559021f,0.60876143f,0.53729961f,0.46174861f,0.38268343f,0.30070580f,0.21643961f,0.13052619f,0.04361938f
    };
    for (j = 0; j < nbands; j++, grbuf += 18, overlap += 9)
    {
        float co[9], si[9];
        co[0] = -grbuf[0];
        si[0] = grbuf[17];
        for (i = 0; i < 4; i++)
        {
            si[8 - 2*i] =   grbuf[4*i + 1] - grbuf[4*i + 2];
            co[1 + 2*i] =   grbuf[4*i + 1] + grbuf[4*i + 2];
            si[7 - 2*i] =   grbuf[4*i + 4] - grbuf[4*i + 3];
            co[2 + 2*i] = -(grbuf[4*i + 3] + grbuf[4*i + 4]);
        }
        ma_dr_mp3_L3_dct3_9(co);
        ma_dr_mp3_L3_dct3_9(si);
        si[1] = -si[1];
        si[3] = -si[3];
        si[5] = -si[5];
        si[7] = -si[7];
        i = 0;
#if MA_DR_MP3_HAVE_SIMD
        if (ma_dr_mp3_have_simd()) for (; i < 8; i += 4)
        {
            ma_dr_mp3_f4 vovl = MA_DR_MP3_VLD(overlap + i);
            ma_dr_mp3_f4 vc = MA_DR_MP3_VLD(co + i);
            ma_dr_mp3_f4 vs = MA_DR_MP3_VLD(si + i);
            ma_dr_mp3_f4 vr0 = MA_DR_MP3_VLD(g_twid9 + i);
            ma_dr_mp3_f4 vr1 = MA_DR_MP3_VLD(g_twid9 + 9 + i);
            ma_dr_mp3_f4 vw0 = MA_DR_MP3_VLD(window + i);
            ma_dr_mp3_f4 vw1 = MA_DR_MP3_VLD(window + 9 + i);
            ma_dr_mp3_f4 vsum = MA_DR_MP3_VADD(MA_DR_MP3_VMUL(vc, vr1), MA_DR_MP3_VMUL(vs, vr0));
            MA_DR_MP3_VSTORE(overlap + i, MA_DR_MP3_VSUB(MA_DR_MP3_VMUL(vc, vr0), MA_DR_MP3_VMUL(vs, vr1)));
            MA_DR_MP3_VSTORE(grbuf + i, MA_DR_MP3_VSUB(MA_DR_MP3_VMUL(vovl, vw0), MA_DR_MP3_VMUL(vsum, vw1)));
            vsum = MA_DR_MP3_VADD(MA_DR_MP3_VMUL(vovl, vw1), MA_DR_MP3_VMUL(vsum, vw0));
            MA_DR_MP3_VSTORE(grbuf + 14 - i, MA_DR_MP3_VREV(vsum));
        }
#endif
        for (; i < 9; i++)
        {
            float ovl  = overlap[i];
            float sum  = co[i]*g_twid9[9 + i] + si[i]*g_twid9[0 + i];
            overlap[i] = co[i]*g_twid9[0 + i] - si[i]*g_twid9[9 + i];
            grbuf[i]      = ovl*window[0 + i] - sum*window[9 + i];
            grbuf[17 - i] = ovl*window[9 + i] + sum*window[0 + i];
        }
    }
}
static void ma_dr_mp3_L3_idct3(float x0, float x1, float x2, float *dst)
{
    float m1 = x1*0.86602540f;
    float a1 = x0 - x2*0.5f;
    dst[1] = x0 + x2;
    dst[0] = a1 + m1;
    dst[2] = a1 - m1;
}
static void ma_dr_mp3_L3_imdct12(float *x, float *dst, float *overlap)
{
    static const float g_twid3[6] = { 0.79335334f,0.92387953f,0.99144486f, 0.60876143f,0.38268343f,0.13052619f };
    float co[3], si[3];
    int i;
    ma_dr_mp3_L3_idct3(-x[0], x[6] + x[3], x[12] + x[9], co);
    ma_dr_mp3_L3_idct3(x[15], x[12] - x[9], x[6] - x[3], si);
    si[1] = -si[1];
    for (i = 0; i < 3; i++)
    {
        float ovl  = overlap[i];
        float sum  = co[i]*g_twid3[3 + i] + si[i]*g_twid3[0 + i];
        overlap[i] = co[i]*g_twid3[0 + i] - si[i]*g_twid3[3 + i];
        dst[i]     = ovl*g_twid3[2 - i] - sum*g_twid3[5 - i];
        dst[5 - i] = ovl*g_twid3[5 - i] + sum*g_twid3[2 - i];
    }
}
static void ma_dr_mp3_L3_imdct_short(float *grbuf, float *overlap, int nbands)
{
    for (;nbands > 0; nbands--, overlap += 9, grbuf += 18)
    {
        float tmp[18];
        MA_DR_MP3_COPY_MEMORY(tmp, grbuf, sizeof(tmp));
        MA_DR_MP3_COPY_MEMORY(grbuf, overlap, 6*sizeof(float));
        ma_dr_mp3_L3_imdct12(tmp, grbuf + 6, overlap + 6);
        ma_dr_mp3_L3_imdct12(tmp + 1, grbuf + 12, overlap + 6);
        ma_dr_mp3_L3_imdct12(tmp + 2, overlap, overlap + 6);
    }
}
static void ma_dr_mp3_L3_change_sign(float *grbuf)
{
    int b, i;
    for (b = 0, grbuf += 18; b < 32; b += 2, grbuf += 36)
        for (i = 1; i < 18; i += 2)
            grbuf[i] = -grbuf[i];
}
static void ma_dr_mp3_L3_imdct_gr(float *grbuf, float *overlap, unsigned block_type, unsigned n_long_bands)
{
    static const float g_mdct_window[2][18] = {
        { 0.99904822f,0.99144486f,0.97629601f,0.95371695f,0.92387953f,0.88701083f,0.84339145f,0.79335334f,0.73727734f,0.04361938f,0.13052619f,0.21643961f,0.30070580f,0.38268343f,0.46174861f,0.53729961f,0.60876143f,0.67559021f },
        { 1,1,1,1,1,1,0.99144486f,0.92387953f,0.79335334f,0,0,0,0,0,0,0.13052619f,0.38268343f,0.60876143f }
    };
    if (n_long_bands)
    {
        ma_dr_mp3_L3_imdct36(grbuf, overlap, g_mdct_window[0], n_long_bands);
        grbuf += 18*n_long_bands;
        overlap += 9*n_long_bands;
    }
    if (block_type == MA_DR_MP3_SHORT_BLOCK_TYPE)
        ma_dr_mp3_L3_imdct_short(grbuf, overlap, 32 - n_long_bands);
    else
        ma_dr_mp3_L3_imdct36(grbuf, overlap, g_mdct_window[block_type == MA_DR_MP3_STOP_BLOCK_TYPE], 32 - n_long_bands);
}
static void ma_dr_mp3_L3_save_reservoir(ma_dr_mp3dec *h, ma_dr_mp3dec_scratch *s)
{
    int pos = (s->bs.pos + 7)/8u;
    int remains = s->bs.limit/8u - pos;
    if (remains > MA_DR_MP3_MAX_BITRESERVOIR_BYTES)
    {
        pos += remains - MA_DR_MP3_MAX_BITRESERVOIR_BYTES;
        remains = MA_DR_MP3_MAX_BITRESERVOIR_BYTES;
    }
    if (remains > 0)
    {
        MA_DR_MP3_MOVE_MEMORY(h->reserv_buf, s->maindata + pos, remains);
    }
    h->reserv = remains;
}
static int ma_dr_mp3_L3_restore_reservoir(ma_dr_mp3dec *h, ma_dr_mp3_bs *bs, ma_dr_mp3dec_scratch *s, int main_data_begin)
{
    int frame_bytes = (bs->limit - bs->pos)/8;
    int bytes_have = MA_DR_MP3_MIN(h->reserv, main_data_begin);
    MA_DR_MP3_COPY_MEMORY(s->maindata, h->reserv_buf + MA_DR_MP3_MAX(0, h->reserv - main_data_begin), MA_DR_MP3_MIN(h->reserv, main_data_begin));
    MA_DR_MP3_COPY_MEMORY(s->maindata + bytes_have, bs->buf + bs->pos/8, frame_bytes);
    ma_dr_mp3_bs_init(&s->bs, s->maindata, bytes_have + frame_bytes);
    return h->reserv >= main_data_begin;
}
static void ma_dr_mp3_L3_decode(ma_dr_mp3dec *h, ma_dr_mp3dec_scratch *s, ma_dr_mp3_L3_gr_info *gr_info, int nch)
{
    int ch;
    for (ch = 0; ch < nch; ch++)
    {
        int layer3gr_limit = s->bs.pos + gr_info[ch].part_23_length;
        ma_dr_mp3_L3_decode_scalefactors(h->header, s->ist_pos[ch], &s->bs, gr_info + ch, s->scf, ch);
        ma_dr_mp3_L3_huffman(s->grbuf[ch], &s->bs, gr_info + ch, s->scf, layer3gr_limit);
    }
    if (MA_DR_MP3_HDR_TEST_I_STEREO(h->header))
    {
        ma_dr_mp3_L3_intensity_stereo(s->grbuf[0], s->ist_pos[1], gr_info, h->header);
    } else if (MA_DR_MP3_HDR_IS_MS_STEREO(h->header))
    {
        ma_dr_mp3_L3_midside_stereo(s->grbuf[0], 576);
    }
    for (ch = 0; ch < nch; ch++, gr_info++)
    {
        int aa_bands = 31;
        int n_long_bands = (gr_info->mixed_block_flag ? 2 : 0) << (int)(MA_DR_MP3_HDR_GET_MY_SAMPLE_RATE(h->header) == 2);
        if (gr_info->n_short_sfb)
        {
            aa_bands = n_long_bands - 1;
            ma_dr_mp3_L3_reorder(s->grbuf[ch] + n_long_bands*18, s->syn[0], gr_info->sfbtab + gr_info->n_long_sfb);
        }
        ma_dr_mp3_L3_antialias(s->grbuf[ch], aa_bands);
        ma_dr_mp3_L3_imdct_gr(s->grbuf[ch], h->mdct_overlap[ch], gr_info->block_type, n_long_bands);
        ma_dr_mp3_L3_change_sign(s->grbuf[ch]);
    }
}
static void ma_dr_mp3d_DCT_II(float *grbuf, int n)
{
    static const float g_sec[24] = {
        10.19000816f,0.50060302f,0.50241929f,3.40760851f,0.50547093f,0.52249861f,2.05778098f,0.51544732f,0.56694406f,1.48416460f,0.53104258f,0.64682180f,1.16943991f,0.55310392f,0.78815460f,0.97256821f,0.58293498f,1.06067765f,0.83934963f,0.62250412f,1.72244716f,0.74453628f,0.67480832f,5.10114861f
    };
    int i, k = 0;
#if MA_DR_MP3_HAVE_SIMD
    if (ma_dr_mp3_have_simd()) for (; k < n; k += 4)
    {
        ma_dr_mp3_f4 t[4][8], *x;
        float *y = grbuf + k;
        for (x = t[0], i = 0; i < 8; i++, x++)
        {
            ma_dr_mp3_f4 x0 = MA_DR_MP3_VLD(&y[i*18]);
            ma_dr_mp3_f4 x1 = MA_DR_MP3_VLD(&y[(15 - i)*18]);
            ma_dr_mp3_f4 x2 = MA_DR_MP3_VLD(&y[(16 + i)*18]);
            ma_dr_mp3_f4 x3 = MA_DR_MP3_VLD(&y[(31 - i)*18]);
            ma_dr_mp3_f4 t0 = MA_DR_MP3_VADD(x0, x3);
            ma_dr_mp3_f4 t1 = MA_DR_MP3_VADD(x1, x2);
            ma_dr_mp3_f4 t2 = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(x1, x2), g_sec[3*i + 0]);
            ma_dr_mp3_f4 t3 = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(x0, x3), g_sec[3*i + 1]);
            x[0] = MA_DR_MP3_VADD(t0, t1);
            x[8] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(t0, t1), g_sec[3*i + 2]);
            x[16] = MA_DR_MP3_VADD(t3, t2);
            x[24] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(t3, t2), g_sec[3*i + 2]);
        }
        for (x = t[0], i = 0; i < 4; i++, x += 8)
        {
            ma_dr_mp3_f4 x0 = x[0], x1 = x[1], x2 = x[2], x3 = x[3], x4 = x[4], x5 = x[5], x6 = x[6], x7 = x[7], xt;
            xt = MA_DR_MP3_VSUB(x0, x7); x0 = MA_DR_MP3_VADD(x0, x7);
            x7 = MA_DR_MP3_VSUB(x1, x6); x1 = MA_DR_MP3_VADD(x1, x6);
            x6 = MA_DR_MP3_VSUB(x2, x5); x2 = MA_DR_MP3_VADD(x2, x5);
            x5 = MA_DR_MP3_VSUB(x3, x4); x3 = MA_DR_MP3_VADD(x3, x4);
            x4 = MA_DR_MP3_VSUB(x0, x3); x0 = MA_DR_MP3_VADD(x0, x3);
            x3 = MA_DR_MP3_VSUB(x1, x2); x1 = MA_DR_MP3_VADD(x1, x2);
            x[0] = MA_DR_MP3_VADD(x0, x1);
            x[4] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(x0, x1), 0.70710677f);
            x5 = MA_DR_MP3_VADD(x5, x6);
            x6 = MA_DR_MP3_VMUL_S(MA_DR_MP3_VADD(x6, x7), 0.70710677f);
            x7 = MA_DR_MP3_VADD(x7, xt);
            x3 = MA_DR_MP3_VMUL_S(MA_DR_MP3_VADD(x3, x4), 0.70710677f);
            x5 = MA_DR_MP3_VSUB(x5, MA_DR_MP3_VMUL_S(x7, 0.198912367f));
            x7 = MA_DR_MP3_VADD(x7, MA_DR_MP3_VMUL_S(x5, 0.382683432f));
            x5 = MA_DR_MP3_VSUB(x5, MA_DR_MP3_VMUL_S(x7, 0.198912367f));
            x0 = MA_DR_MP3_VSUB(xt, x6); xt = MA_DR_MP3_VADD(xt, x6);
            x[1] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VADD(xt, x7), 0.50979561f);
            x[2] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VADD(x4, x3), 0.54119611f);
            x[3] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(x0, x5), 0.60134488f);
            x[5] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VADD(x0, x5), 0.89997619f);
            x[6] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(x4, x3), 1.30656302f);
            x[7] = MA_DR_MP3_VMUL_S(MA_DR_MP3_VSUB(xt, x7), 2.56291556f);
        }
        if (k > n - 3)
        {
#if MA_DR_MP3_HAVE_SSE
#define MA_DR_MP3_VSAVE2(i, v) _mm_storel_pi((__m64 *)(void*)&y[i*18], v)
#else
#define MA_DR_MP3_VSAVE2(i, v) vst1_f32((float32_t *)&y[(i)*18],  vget_low_f32(v))
#endif
            for (i = 0; i < 7; i++, y += 4*18)
            {
                ma_dr_mp3_f4 s = MA_DR_MP3_VADD(t[3][i], t[3][i + 1]);
                MA_DR_MP3_VSAVE2(0, t[0][i]);
                MA_DR_MP3_VSAVE2(1, MA_DR_MP3_VADD(t[2][i], s));
                MA_DR_MP3_VSAVE2(2, MA_DR_MP3_VADD(t[1][i], t[1][i + 1]));
                MA_DR_MP3_VSAVE2(3, MA_DR_MP3_VADD(t[2][1 + i], s));
            }
            MA_DR_MP3_VSAVE2(0, t[0][7]);
            MA_DR_MP3_VSAVE2(1, MA_DR_MP3_VADD(t[2][7], t[3][7]));
            MA_DR_MP3_VSAVE2(2, t[1][7]);
            MA_DR_MP3_VSAVE2(3, t[3][7]);
        } else
        {
#define MA_DR_MP3_VSAVE4(i, v) MA_DR_MP3_VSTORE(&y[(i)*18], v)
            for (i = 0; i < 7; i++, y += 4*18)
            {
                ma_dr_mp3_f4 s = MA_DR_MP3_VADD(t[3][i], t[3][i + 1]);
                MA_DR_MP3_VSAVE4(0, t[0][i]);
                MA_DR_MP3_VSAVE4(1, MA_DR_MP3_VADD(t[2][i], s));
                MA_DR_MP3_VSAVE4(2, MA_DR_MP3_VADD(t[1][i], t[1][i + 1]));
                MA_DR_MP3_VSAVE4(3, MA_DR_MP3_VADD(t[2][1 + i], s));
            }
            MA_DR_MP3_VSAVE4(0, t[0][7]);
            MA_DR_MP3_VSAVE4(1, MA_DR_MP3_VADD(t[2][7], t[3][7]));
            MA_DR_MP3_VSAVE4(2, t[1][7]);
            MA_DR_MP3_VSAVE4(3, t[3][7]);
        }
    } else
#endif
#ifdef MA_DR_MP3_ONLY_SIMD
    {}
#else
    for (; k < n; k++)
    {
        float t[4][8], *x, *y = grbuf + k;
        for (x = t[0], i = 0; i < 8; i++, x++)
        {
            float x0 = y[i*18];
            float x1 = y[(15 - i)*18];
            float x2 = y[(16 + i)*18];
            float x3 = y[(31 - i)*18];
            float t0 = x0 + x3;
            float t1 = x1 + x2;
            float t2 = (x1 - x2)*g_sec[3*i + 0];
            float t3 = (x0 - x3)*g_sec[3*i + 1];
            x[0] = t0 + t1;
            x[8] = (t0 - t1)*g_sec[3*i + 2];
            x[16] = t3 + t2;
            x[24] = (t3 - t2)*g_sec[3*i + 2];
        }
        for (x = t[0], i = 0; i < 4; i++, x += 8)
        {
            float x0 = x[0], x1 = x[1], x2 = x[2], x3 = x[3], x4 = x[4], x5 = x[5], x6 = x[6], x7 = x[7], xt;
            xt = x0 - x7; x0 += x7;
            x7 = x1 - x6; x1 += x6;
            x6 = x2 - x5; x2 += x5;
            x5 = x3 - x4; x3 += x4;
            x4 = x0 - x3; x0 += x3;
            x3 = x1 - x2; x1 += x2;
            x[0] = x0 + x1;
            x[4] = (x0 - x1)*0.70710677f;
            x5 =  x5 + x6;
            x6 = (x6 + x7)*0.70710677f;
            x7 =  x7 + xt;
            x3 = (x3 + x4)*0.70710677f;
            x5 -= x7*0.198912367f;
            x7 += x5*0.382683432f;
            x5 -= x7*0.198912367f;
            x0 = xt - x6; xt += x6;
            x[1] = (xt + x7)*0.50979561f;
            x[2] = (x4 + x3)*0.54119611f;
            x[3] = (x0 - x5)*0.60134488f;
            x[5] = (x0 + x5)*0.89997619f;
            x[6] = (x4 - x3)*1.30656302f;
            x[7] = (xt - x7)*2.56291556f;
        }
        for (i = 0; i < 7; i++, y += 4*18)
        {
            y[0*18] = t[0][i];
            y[1*18] = t[2][i] + t[3][i] + t[3][i + 1];
            y[2*18] = t[1][i] + t[1][i + 1];
            y[3*18] = t[2][i + 1] + t[3][i] + t[3][i + 1];
        }
        y[0*18] = t[0][7];
        y[1*18] = t[2][7] + t[3][7];
        y[2*18] = t[1][7];
        y[3*18] = t[3][7];
    }
#endif
}
#ifndef MA_DR_MP3_FLOAT_OUTPUT
typedef ma_int16 ma_dr_mp3d_sample_t;
static ma_int16 ma_dr_mp3d_scale_pcm(float sample)
{
    ma_int16 s;
#if MA_DR_MP3_HAVE_ARMV6
    ma_int32 s32 = (ma_int32)(sample + .5f);
    s32 -= (s32 < 0);
    s = (ma_int16)ma_dr_mp3_clip_int16_arm(s32);
#else
    if (sample >=  32766.5f) return (ma_int16) 32767;
    if (sample <= -32767.5f) return (ma_int16)-32768;
    s = (ma_int16)(sample + .5f);
    s -= (s < 0);
#endif
    return s;
}
#else
typedef float ma_dr_mp3d_sample_t;
static float ma_dr_mp3d_scale_pcm(float sample)
{
    return sample*(1.f/32768.f);
}
#endif
static void ma_dr_mp3d_synth_pair(ma_dr_mp3d_sample_t *pcm, int nch, const float *z)
{
    float a;
    a  = (z[14*64] - z[    0]) * 29;
    a += (z[ 1*64] + z[13*64]) * 213;
    a += (z[12*64] - z[ 2*64]) * 459;
    a += (z[ 3*64] + z[11*64]) * 2037;
    a += (z[10*64] - z[ 4*64]) * 5153;
    a += (z[ 5*64] + z[ 9*64]) * 6574;
    a += (z[ 8*64] - z[ 6*64]) * 37489;
    a +=  z[ 7*64]             * 75038;
    pcm[0] = ma_dr_mp3d_scale_pcm(a);
    z += 2;
    a  = z[14*64] * 104;
    a += z[12*64] * 1567;
    a += z[10*64] * 9727;
    a += z[ 8*64] * 64019;
    a += z[ 6*64] * -9975;
    a += z[ 4*64] * -45;
    a += z[ 2*64] * 146;
    a += z[ 0*64] * -5;
    pcm[16*nch] = ma_dr_mp3d_scale_pcm(a);
}
static void ma_dr_mp3d_synth(float *xl, ma_dr_mp3d_sample_t *dstl, int nch, float *lins)
{
    int i;
    float *xr = xl + 576*(nch - 1);
    ma_dr_mp3d_sample_t *dstr = dstl + (nch - 1);
    static const float g_win[] = {
        -1,26,-31,208,218,401,-519,2063,2000,4788,-5517,7134,5959,35640,-39336,74992,
        -1,24,-35,202,222,347,-581,2080,1952,4425,-5879,7640,5288,33791,-41176,74856,
        -1,21,-38,196,225,294,-645,2087,1893,4063,-6237,8092,4561,31947,-43006,74630,
        -1,19,-41,190,227,244,-711,2085,1822,3705,-6589,8492,3776,30112,-44821,74313,
        -1,17,-45,183,228,197,-779,2075,1739,3351,-6935,8840,2935,28289,-46617,73908,
        -1,16,-49,176,228,153,-848,2057,1644,3004,-7271,9139,2037,26482,-48390,73415,
        -2,14,-53,169,227,111,-919,2032,1535,2663,-7597,9389,1082,24694,-50137,72835,
        -2,13,-58,161,224,72,-991,2001,1414,2330,-7910,9592,70,22929,-51853,72169,
        -2,11,-63,154,221,36,-1064,1962,1280,2006,-8209,9750,-998,21189,-53534,71420,
        -2,10,-68,147,215,2,-1137,1919,1131,1692,-8491,9863,-2122,19478,-55178,70590,
        -3,9,-73,139,208,-29,-1210,1870,970,1388,-8755,9935,-3300,17799,-56778,69679,
        -3,8,-79,132,200,-57,-1283,1817,794,1095,-8998,9966,-4533,16155,-58333,68692,
        -4,7,-85,125,189,-83,-1356,1759,605,814,-9219,9959,-5818,14548,-59838,67629,
        -4,7,-91,117,177,-106,-1428,1698,402,545,-9416,9916,-7154,12980,-61289,66494,
        -5,6,-97,111,163,-127,-1498,1634,185,288,-9585,9838,-8540,11455,-62684,65290
    };
    float *zlin = lins + 15*64;
    const float *w = g_win;
    zlin[4*15]     = xl[18*16];
    zlin[4*15 + 1] = xr[18*16];
    zlin[4*15 + 2] = xl[0];
    zlin[4*15 + 3] = xr[0];
    zlin[4*31]     = xl[1 + 18*16];
    zlin[4*31 + 1] = xr[1 + 18*16];
    zlin[4*31 + 2] = xl[1];
    zlin[4*31 + 3] = xr[1];
    ma_dr_mp3d_synth_pair(dstr, nch, lins + 4*15 + 1);
    ma_dr_mp3d_synth_pair(dstr + 32*nch, nch, lins + 4*15 + 64 + 1);
    ma_dr_mp3d_synth_pair(dstl, nch, lins + 4*15);
    ma_dr_mp3d_synth_pair(dstl + 32*nch, nch, lins + 4*15 + 64);
#if MA_DR_MP3_HAVE_SIMD
    if (ma_dr_mp3_have_simd()) for (i = 14; i >= 0; i--)
    {
#define MA_DR_MP3_VLOAD(k) ma_dr_mp3_f4 w0 = MA_DR_MP3_VSET(*w++); ma_dr_mp3_f4 w1 = MA_DR_MP3_VSET(*w++); ma_dr_mp3_f4 vz = MA_DR_MP3_VLD(&zlin[4*i - 64*k]); ma_dr_mp3_f4 vy = MA_DR_MP3_VLD(&zlin[4*i - 64*(15 - k)]);
#define MA_DR_MP3_V0(k) { MA_DR_MP3_VLOAD(k) b =               MA_DR_MP3_VADD(MA_DR_MP3_VMUL(vz, w1), MA_DR_MP3_VMUL(vy, w0)) ; a =               MA_DR_MP3_VSUB(MA_DR_MP3_VMUL(vz, w0), MA_DR_MP3_VMUL(vy, w1));  }
#define MA_DR_MP3_V1(k) { MA_DR_MP3_VLOAD(k) b = MA_DR_MP3_VADD(b, MA_DR_MP3_VADD(MA_DR_MP3_VMUL(vz, w1), MA_DR_MP3_VMUL(vy, w0))); a = MA_DR_MP3_VADD(a, MA_DR_MP3_VSUB(MA_DR_MP3_VMUL(vz, w0), MA_DR_MP3_VMUL(vy, w1))); }
#define MA_DR_MP3_V2(k) { MA_DR_MP3_VLOAD(k) b = MA_DR_MP3_VADD(b, MA_DR_MP3_VADD(MA_DR_MP3_VMUL(vz, w1), MA_DR_MP3_VMUL(vy, w0))); a = MA_DR_MP3_VADD(a, MA_DR_MP3_VSUB(MA_DR_MP3_VMUL(vy, w1), MA_DR_MP3_VMUL(vz, w0))); }
        ma_dr_mp3_f4 a, b;
        zlin[4*i]     = xl[18*(31 - i)];
        zlin[4*i + 1] = xr[18*(31 - i)];
        zlin[4*i + 2] = xl[1 + 18*(31 - i)];
        zlin[4*i + 3] = xr[1 + 18*(31 - i)];
        zlin[4*i + 64] = xl[1 + 18*(1 + i)];
        zlin[4*i + 64 + 1] = xr[1 + 18*(1 + i)];
        zlin[4*i - 64 + 2] = xl[18*(1 + i)];
        zlin[4*i - 64 + 3] = xr[18*(1 + i)];
        MA_DR_MP3_V0(0) MA_DR_MP3_V2(1) MA_DR_MP3_V1(2) MA_DR_MP3_V2(3) MA_DR_MP3_V1(4) MA_DR_MP3_V2(5) MA_DR_MP3_V1(6) MA_DR_MP3_V2(7)
        {
#ifndef MA_DR_MP3_FLOAT_OUTPUT
#if MA_DR_MP3_HAVE_SSE
            static const ma_dr_mp3_f4 g_max = { 32767.0f, 32767.0f, 32767.0f, 32767.0f };
            static const ma_dr_mp3_f4 g_min = { -32768.0f, -32768.0f, -32768.0f, -32768.0f };
            __m128i pcm8 = _mm_packs_epi32(_mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(a, g_max), g_min)),
                                           _mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(b, g_max), g_min)));
            dstr[(15 - i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 1);
            dstr[(17 + i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 5);
            dstl[(15 - i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 0);
            dstl[(17 + i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 4);
            dstr[(47 - i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 3);
            dstr[(49 + i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 7);
            dstl[(47 - i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 2);
            dstl[(49 + i)*nch] = (ma_int16)_mm_extract_epi16(pcm8, 6);
#else
            int16x4_t pcma, pcmb;
            a = MA_DR_MP3_VADD(a, MA_DR_MP3_VSET(0.5f));
            b = MA_DR_MP3_VADD(b, MA_DR_MP3_VSET(0.5f));
            pcma = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(a), vreinterpretq_s32_u32(vcltq_f32(a, MA_DR_MP3_VSET(0)))));
            pcmb = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(b), vreinterpretq_s32_u32(vcltq_f32(b, MA_DR_MP3_VSET(0)))));
            vst1_lane_s16(dstr + (15 - i)*nch, pcma, 1);
            vst1_lane_s16(dstr + (17 + i)*nch, pcmb, 1);
            vst1_lane_s16(dstl + (15 - i)*nch, pcma, 0);
            vst1_lane_s16(dstl + (17 + i)*nch, pcmb, 0);
            vst1_lane_s16(dstr + (47 - i)*nch, pcma, 3);
            vst1_lane_s16(dstr + (49 + i)*nch, pcmb, 3);
            vst1_lane_s16(dstl + (47 - i)*nch, pcma, 2);
            vst1_lane_s16(dstl + (49 + i)*nch, pcmb, 2);
#endif
#else
        #if MA_DR_MP3_HAVE_SSE
            static const ma_dr_mp3_f4 g_scale = { 1.0f/32768.0f, 1.0f/32768.0f, 1.0f/32768.0f, 1.0f/32768.0f };
        #else
            const ma_dr_mp3_f4 g_scale = vdupq_n_f32(1.0f/32768.0f);
        #endif
            a = MA_DR_MP3_VMUL(a, g_scale);
            b = MA_DR_MP3_VMUL(b, g_scale);
#if MA_DR_MP3_HAVE_SSE
            _mm_store_ss(dstr + (15 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(1, 1, 1, 1)));
            _mm_store_ss(dstr + (17 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(1, 1, 1, 1)));
            _mm_store_ss(dstl + (15 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(0, 0, 0, 0)));
            _mm_store_ss(dstl + (17 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(0, 0, 0, 0)));
            _mm_store_ss(dstr + (47 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(3, 3, 3, 3)));
            _mm_store_ss(dstr + (49 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(3, 3, 3, 3)));
            _mm_store_ss(dstl + (47 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(2, 2, 2, 2)));
            _mm_store_ss(dstl + (49 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(2, 2, 2, 2)));
#else
            vst1q_lane_f32(dstr + (15 - i)*nch, a, 1);
            vst1q_lane_f32(dstr + (17 + i)*nch, b, 1);
            vst1q_lane_f32(dstl + (15 - i)*nch, a, 0);
            vst1q_lane_f32(dstl + (17 + i)*nch, b, 0);
            vst1q_lane_f32(dstr + (47 - i)*nch, a, 3);
            vst1q_lane_f32(dstr + (49 + i)*nch, b, 3);
            vst1q_lane_f32(dstl + (47 - i)*nch, a, 2);
            vst1q_lane_f32(dstl + (49 + i)*nch, b, 2);
#endif
#endif
        }
    } else
#endif
#ifdef MA_DR_MP3_ONLY_SIMD
    {}
#else
    for (i = 14; i >= 0; i--)
    {
#define MA_DR_MP3_LOAD(k) float w0 = *w++; float w1 = *w++; float *vz = &zlin[4*i - k*64]; float *vy = &zlin[4*i - (15 - k)*64];
#define MA_DR_MP3_S0(k) { int j; MA_DR_MP3_LOAD(k); for (j = 0; j < 4; j++) b[j]  = vz[j]*w1 + vy[j]*w0, a[j]  = vz[j]*w0 - vy[j]*w1; }
#define MA_DR_MP3_S1(k) { int j; MA_DR_MP3_LOAD(k); for (j = 0; j < 4; j++) b[j] += vz[j]*w1 + vy[j]*w0, a[j] += vz[j]*w0 - vy[j]*w1; }
#define MA_DR_MP3_S2(k) { int j; MA_DR_MP3_LOAD(k); for (j = 0; j < 4; j++) b[j] += vz[j]*w1 + vy[j]*w0, a[j] += vy[j]*w1 - vz[j]*w0; }
        float a[4], b[4];
        zlin[4*i]     = xl[18*(31 - i)];
        zlin[4*i + 1] = xr[18*(31 - i)];
        zlin[4*i + 2] = xl[1 + 18*(31 - i)];
        zlin[4*i + 3] = xr[1 + 18*(31 - i)];
        zlin[4*(i + 16)]   = xl[1 + 18*(1 + i)];
        zlin[4*(i + 16) + 1] = xr[1 + 18*(1 + i)];
        zlin[4*(i - 16) + 2] = xl[18*(1 + i)];
        zlin[4*(i - 16) + 3] = xr[18*(1 + i)];
        MA_DR_MP3_S0(0) MA_DR_MP3_S2(1) MA_DR_MP3_S1(2) MA_DR_MP3_S2(3) MA_DR_MP3_S1(4) MA_DR_MP3_S2(5) MA_DR_MP3_S1(6) MA_DR_MP3_S2(7)
        dstr[(15 - i)*nch] = ma_dr_mp3d_scale_pcm(a[1]);
        dstr[(17 + i)*nch] = ma_dr_mp3d_scale_pcm(b[1]);
        dstl[(15 - i)*nch] = ma_dr_mp3d_scale_pcm(a[0]);
        dstl[(17 + i)*nch] = ma_dr_mp3d_scale_pcm(b[0]);
        dstr[(47 - i)*nch] = ma_dr_mp3d_scale_pcm(a[3]);
        dstr[(49 + i)*nch] = ma_dr_mp3d_scale_pcm(b[3]);
        dstl[(47 - i)*nch] = ma_dr_mp3d_scale_pcm(a[2]);
        dstl[(49 + i)*nch] = ma_dr_mp3d_scale_pcm(b[2]);
    }
#endif
}
static void ma_dr_mp3d_synth_granule(float *qmf_state, float *grbuf, int nbands, int nch, ma_dr_mp3d_sample_t *pcm, float *lins)
{
    int i;
    for (i = 0; i < nch; i++)
    {
        ma_dr_mp3d_DCT_II(grbuf + 576*i, nbands);
    }
    MA_DR_MP3_COPY_MEMORY(lins, qmf_state, sizeof(float)*15*64);
    for (i = 0; i < nbands; i += 2)
    {
        ma_dr_mp3d_synth(grbuf + i, pcm + 32*nch*i, nch, lins + i*64);
    }
#ifndef MA_DR_MP3_NONSTANDARD_BUT_LOGICAL
    if (nch == 1)
    {
        for (i = 0; i < 15*64; i += 2)
        {
            qmf_state[i] = lins[nbands*64 + i];
        }
    } else
#endif
    {
        MA_DR_MP3_COPY_MEMORY(qmf_state, lins + nbands*64, sizeof(float)*15*64);
    }
}
static int ma_dr_mp3d_match_frame(const ma_uint8 *hdr, int mp3_bytes, int frame_bytes)
{
    int i, nmatch;
    for (i = 0, nmatch = 0; nmatch < MA_DR_MP3_MAX_FRAME_SYNC_MATCHES; nmatch++)
    {
        i += ma_dr_mp3_hdr_frame_bytes(hdr + i, frame_bytes) + ma_dr_mp3_hdr_padding(hdr + i);
        if (i + MA_DR_MP3_HDR_SIZE > mp3_bytes)
            return nmatch > 0;
        if (!ma_dr_mp3_hdr_compare(hdr, hdr + i))
            return 0;
    }
    return 1;
}
static int ma_dr_mp3d_find_frame(const ma_uint8 *mp3, int mp3_bytes, int *free_format_bytes, int *ptr_frame_bytes)
{
    int i, k;
    for (i = 0; i < mp3_bytes - MA_DR_MP3_HDR_SIZE; i++, mp3++)
    {
        if (ma_dr_mp3_hdr_valid(mp3))
        {
            int frame_bytes = ma_dr_mp3_hdr_frame_bytes(mp3, *free_format_bytes);
            int frame_and_padding = frame_bytes + ma_dr_mp3_hdr_padding(mp3);
            for (k = MA_DR_MP3_HDR_SIZE; !frame_bytes && k < MA_DR_MP3_MAX_FREE_FORMAT_FRAME_SIZE && i + 2*k < mp3_bytes - MA_DR_MP3_HDR_SIZE; k++)
            {
                if (ma_dr_mp3_hdr_compare(mp3, mp3 + k))
                {
                    int fb = k - ma_dr_mp3_hdr_padding(mp3);
                    int nextfb = fb + ma_dr_mp3_hdr_padding(mp3 + k);
                    if (i + k + nextfb + MA_DR_MP3_HDR_SIZE > mp3_bytes || !ma_dr_mp3_hdr_compare(mp3, mp3 + k + nextfb))
                        continue;
                    frame_and_padding = k;
                    frame_bytes = fb;
                    *free_format_bytes = fb;
                }
            }
            if ((frame_bytes && i + frame_and_padding <= mp3_bytes &&
                ma_dr_mp3d_match_frame(mp3, mp3_bytes - i, frame_bytes)) ||
                (!i && frame_and_padding == mp3_bytes))
            {
                *ptr_frame_bytes = frame_and_padding;
                return i;
            }
            *free_format_bytes = 0;
        }
    }
    *ptr_frame_bytes = 0;
    return mp3_bytes;
}
MA_API void ma_dr_mp3dec_init(ma_dr_mp3dec *dec)
{
    dec->header[0] = 0;
}
MA_API int ma_dr_mp3dec_decode_frame(ma_dr_mp3dec *dec, const ma_uint8 *mp3, int mp3_bytes, void *pcm, ma_dr_mp3dec_frame_info *info)
{
    int i = 0, igr, frame_size = 0, success = 1;
    const ma_uint8 *hdr;
    ma_dr_mp3_bs bs_frame[1];
    ma_dr_mp3dec_scratch scratch;
    if (mp3_bytes > 4 && dec->header[0] == 0xff && ma_dr_mp3_hdr_compare(dec->header, mp3))
    {
        frame_size = ma_dr_mp3_hdr_frame_bytes(mp3, dec->free_format_bytes) + ma_dr_mp3_hdr_padding(mp3);
        if (frame_size != mp3_bytes && (frame_size + MA_DR_MP3_HDR_SIZE > mp3_bytes || !ma_dr_mp3_hdr_compare(mp3, mp3 + frame_size)))
        {
            frame_size = 0;
        }
    }
    if (!frame_size)
    {
        MA_DR_MP3_ZERO_MEMORY(dec, sizeof(ma_dr_mp3dec));
        i = ma_dr_mp3d_find_frame(mp3, mp3_bytes, &dec->free_format_bytes, &frame_size);
        if (!frame_size || i + frame_size > mp3_bytes)
        {
            info->frame_bytes = i;
            return 0;
        }
    }
    hdr = mp3 + i;
    MA_DR_MP3_COPY_MEMORY(dec->header, hdr, MA_DR_MP3_HDR_SIZE);
    info->frame_bytes = i + frame_size;
    info->channels = MA_DR_MP3_HDR_IS_MONO(hdr) ? 1 : 2;
    info->hz = ma_dr_mp3_hdr_sample_rate_hz(hdr);
    info->layer = 4 - MA_DR_MP3_HDR_GET_LAYER(hdr);
    info->bitrate_kbps = ma_dr_mp3_hdr_bitrate_kbps(hdr);
    ma_dr_mp3_bs_init(bs_frame, hdr + MA_DR_MP3_HDR_SIZE, frame_size - MA_DR_MP3_HDR_SIZE);
    if (MA_DR_MP3_HDR_IS_CRC(hdr))
    {
        ma_dr_mp3_bs_get_bits(bs_frame, 16);
    }
    if (info->layer == 3)
    {
        int main_data_begin = ma_dr_mp3_L3_read_side_info(bs_frame, scratch.gr_info, hdr);
        if (main_data_begin < 0 || bs_frame->pos > bs_frame->limit)
        {
            ma_dr_mp3dec_init(dec);
            return 0;
        }
        success = ma_dr_mp3_L3_restore_reservoir(dec, bs_frame, &scratch, main_data_begin);
        if (success && pcm != NULL)
        {
            for (igr = 0; igr < (MA_DR_MP3_HDR_TEST_MPEG1(hdr) ? 2 : 1); igr++, pcm = MA_DR_MP3_OFFSET_PTR(pcm, sizeof(ma_dr_mp3d_sample_t)*576*info->channels))
            {
                MA_DR_MP3_ZERO_MEMORY(scratch.grbuf[0], 576*2*sizeof(float));
                ma_dr_mp3_L3_decode(dec, &scratch, scratch.gr_info + igr*info->channels, info->channels);
                ma_dr_mp3d_synth_granule(dec->qmf_state, scratch.grbuf[0], 18, info->channels, (ma_dr_mp3d_sample_t*)pcm, scratch.syn[0]);
            }
        }
        ma_dr_mp3_L3_save_reservoir(dec, &scratch);
    } else
    {
#ifdef MA_DR_MP3_ONLY_MP3
        return 0;
#else
        ma_dr_mp3_L12_scale_info sci[1];
        if (pcm == NULL) {
            return ma_dr_mp3_hdr_frame_samples(hdr);
        }
        ma_dr_mp3_L12_read_scale_info(hdr, bs_frame, sci);
        MA_DR_MP3_ZERO_MEMORY(scratch.grbuf[0], 576*2*sizeof(float));
        for (i = 0, igr = 0; igr < 3; igr++)
        {
            if (12 == (i += ma_dr_mp3_L12_dequantize_granule(scratch.grbuf[0] + i, bs_frame, sci, info->layer | 1)))
            {
                i = 0;
                ma_dr_mp3_L12_apply_scf_384(sci, sci->scf + igr, scratch.grbuf[0]);
                ma_dr_mp3d_synth_granule(dec->qmf_state, scratch.grbuf[0], 12, info->channels, (ma_dr_mp3d_sample_t*)pcm, scratch.syn[0]);
                MA_DR_MP3_ZERO_MEMORY(scratch.grbuf[0], 576*2*sizeof(float));
                pcm = MA_DR_MP3_OFFSET_PTR(pcm, sizeof(ma_dr_mp3d_sample_t)*384*info->channels);
            }
            if (bs_frame->pos > bs_frame->limit)
            {
                ma_dr_mp3dec_init(dec);
                return 0;
            }
        }
#endif
    }
    return success*ma_dr_mp3_hdr_frame_samples(dec->header);
}
MA_API void ma_dr_mp3dec_f32_to_s16(const float *in, ma_int16 *out, size_t num_samples)
{
    size_t i = 0;
#if MA_DR_MP3_HAVE_SIMD
    size_t aligned_count = num_samples & ~7;
    for(; i < aligned_count; i+=8)
    {
        ma_dr_mp3_f4 scale = MA_DR_MP3_VSET(32768.0f);
        ma_dr_mp3_f4 a = MA_DR_MP3_VMUL(MA_DR_MP3_VLD(&in[i  ]), scale);
        ma_dr_mp3_f4 b = MA_DR_MP3_VMUL(MA_DR_MP3_VLD(&in[i+4]), scale);
#if MA_DR_MP3_HAVE_SSE
        ma_dr_mp3_f4 s16max = MA_DR_MP3_VSET( 32767.0f);
        ma_dr_mp3_f4 s16min = MA_DR_MP3_VSET(-32768.0f);
        __m128i pcm8 = _mm_packs_epi32(_mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(a, s16max), s16min)),
                                        _mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(b, s16max), s16min)));
        out[i  ] = (ma_int16)_mm_extract_epi16(pcm8, 0);
        out[i+1] = (ma_int16)_mm_extract_epi16(pcm8, 1);
        out[i+2] = (ma_int16)_mm_extract_epi16(pcm8, 2);
        out[i+3] = (ma_int16)_mm_extract_epi16(pcm8, 3);
        out[i+4] = (ma_int16)_mm_extract_epi16(pcm8, 4);
        out[i+5] = (ma_int16)_mm_extract_epi16(pcm8, 5);
        out[i+6] = (ma_int16)_mm_extract_epi16(pcm8, 6);
        out[i+7] = (ma_int16)_mm_extract_epi16(pcm8, 7);
#else
        int16x4_t pcma, pcmb;
        a = MA_DR_MP3_VADD(a, MA_DR_MP3_VSET(0.5f));
        b = MA_DR_MP3_VADD(b, MA_DR_MP3_VSET(0.5f));
        pcma = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(a), vreinterpretq_s32_u32(vcltq_f32(a, MA_DR_MP3_VSET(0)))));
        pcmb = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(b), vreinterpretq_s32_u32(vcltq_f32(b, MA_DR_MP3_VSET(0)))));
        vst1_lane_s16(out+i  , pcma, 0);
        vst1_lane_s16(out+i+1, pcma, 1);
        vst1_lane_s16(out+i+2, pcma, 2);
        vst1_lane_s16(out+i+3, pcma, 3);
        vst1_lane_s16(out+i+4, pcmb, 0);
        vst1_lane_s16(out+i+5, pcmb, 1);
        vst1_lane_s16(out+i+6, pcmb, 2);
        vst1_lane_s16(out+i+7, pcmb, 3);
#endif
    }
#endif
    for(; i < num_samples; i++)
    {
        float sample = in[i] * 32768.0f;
        if (sample >=  32766.5f)
            out[i] = (ma_int16) 32767;
        else if (sample <= -32767.5f)
            out[i] = (ma_int16)-32768;
        else
        {
            short s = (ma_int16)(sample + .5f);
            s -= (s < 0);
            out[i] = s;
        }
    }
}
#ifndef MA_DR_MP3_SEEK_LEADING_MP3_FRAMES
#define MA_DR_MP3_SEEK_LEADING_MP3_FRAMES   2
#endif
#define MA_DR_MP3_MIN_DATA_CHUNK_SIZE   16384
#ifndef MA_DR_MP3_DATA_CHUNK_SIZE
#define MA_DR_MP3_DATA_CHUNK_SIZE  (MA_DR_MP3_MIN_DATA_CHUNK_SIZE*4)
#endif
#define MA_DR_MP3_COUNTOF(x)        (sizeof(x) / sizeof(x[0]))
#define MA_DR_MP3_CLAMP(x, lo, hi)  (MA_DR_MP3_MAX(lo, MA_DR_MP3_MIN(x, hi)))
#ifndef MA_DR_MP3_PI_D
#define MA_DR_MP3_PI_D    3.14159265358979323846264
#endif
#define MA_DR_MP3_DEFAULT_RESAMPLER_LPF_ORDER   2
static MA_INLINE float ma_dr_mp3_mix_f32(float x, float y, float a)
{
    return x*(1-a) + y*a;
}
static MA_INLINE float ma_dr_mp3_mix_f32_fast(float x, float y, float a)
{
    float r0 = (y - x);
    float r1 = r0*a;
    return x + r1;
}
static MA_INLINE ma_uint32 ma_dr_mp3_gcf_u32(ma_uint32 a, ma_uint32 b)
{
    for (;;) {
        if (b == 0) {
            break;
        } else {
            ma_uint32 t = a;
            a = b;
            b = t % a;
        }
    }
    return a;
}
static void* ma_dr_mp3__malloc_default(size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_DR_MP3_MALLOC(sz);
}
static void* ma_dr_mp3__realloc_default(void* p, size_t sz, void* pUserData)
{
    (void)pUserData;
    return MA_DR_MP3_REALLOC(p, sz);
}
static void ma_dr_mp3__free_default(void* p, void* pUserData)
{
    (void)pUserData;
    MA_DR_MP3_FREE(p);
}
static void* ma_dr_mp3__malloc_from_callbacks(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks == NULL) {
        return NULL;
    }
    if (pAllocationCallbacks->onMalloc != NULL) {
        return pAllocationCallbacks->onMalloc(sz, pAllocationCallbacks->pUserData);
    }
    if (pAllocationCallbacks->onRealloc != NULL) {
        return pAllocationCallbacks->onRealloc(NULL, sz, pAllocationCallbacks->pUserData);
    }
    return NULL;
}
static void* ma_dr_mp3__realloc_from_callbacks(void* p, size_t szNew, size_t szOld, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks == NULL) {
        return NULL;
    }
    if (pAllocationCallbacks->onRealloc != NULL) {
        return pAllocationCallbacks->onRealloc(p, szNew, pAllocationCallbacks->pUserData);
    }
    if (pAllocationCallbacks->onMalloc != NULL && pAllocationCallbacks->onFree != NULL) {
        void* p2;
        p2 = pAllocationCallbacks->onMalloc(szNew, pAllocationCallbacks->pUserData);
        if (p2 == NULL) {
            return NULL;
        }
        if (p != NULL) {
            MA_DR_MP3_COPY_MEMORY(p2, p, szOld);
            pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
        }
        return p2;
    }
    return NULL;
}
static void ma_dr_mp3__free_from_callbacks(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (p == NULL || pAllocationCallbacks == NULL) {
        return;
    }
    if (pAllocationCallbacks->onFree != NULL) {
        pAllocationCallbacks->onFree(p, pAllocationCallbacks->pUserData);
    }
}
static ma_allocation_callbacks ma_dr_mp3_copy_allocation_callbacks_or_defaults(const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        return *pAllocationCallbacks;
    } else {
        ma_allocation_callbacks allocationCallbacks;
        allocationCallbacks.pUserData = NULL;
        allocationCallbacks.onMalloc  = ma_dr_mp3__malloc_default;
        allocationCallbacks.onRealloc = ma_dr_mp3__realloc_default;
        allocationCallbacks.onFree    = ma_dr_mp3__free_default;
        return allocationCallbacks;
    }
}
static size_t ma_dr_mp3__on_read(ma_dr_mp3* pMP3, void* pBufferOut, size_t bytesToRead)
{
    size_t bytesRead = pMP3->onRead(pMP3->pUserData, pBufferOut, bytesToRead);
    pMP3->streamCursor += bytesRead;
    return bytesRead;
}
static ma_bool32 ma_dr_mp3__on_seek(ma_dr_mp3* pMP3, int offset, ma_dr_mp3_seek_origin origin)
{
    MA_DR_MP3_ASSERT(offset >= 0);
    if (!pMP3->onSeek(pMP3->pUserData, offset, origin)) {
        return MA_FALSE;
    }
    if (origin == ma_dr_mp3_seek_origin_start) {
        pMP3->streamCursor = (ma_uint64)offset;
    } else {
        pMP3->streamCursor += offset;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_mp3__on_seek_64(ma_dr_mp3* pMP3, ma_uint64 offset, ma_dr_mp3_seek_origin origin)
{
    if (offset <= 0x7FFFFFFF) {
        return ma_dr_mp3__on_seek(pMP3, (int)offset, origin);
    }
    if (!ma_dr_mp3__on_seek(pMP3, 0x7FFFFFFF, ma_dr_mp3_seek_origin_start)) {
        return MA_FALSE;
    }
    offset -= 0x7FFFFFFF;
    while (offset > 0) {
        if (offset <= 0x7FFFFFFF) {
            if (!ma_dr_mp3__on_seek(pMP3, (int)offset, ma_dr_mp3_seek_origin_current)) {
                return MA_FALSE;
            }
            offset = 0;
        } else {
            if (!ma_dr_mp3__on_seek(pMP3, 0x7FFFFFFF, ma_dr_mp3_seek_origin_current)) {
                return MA_FALSE;
            }
            offset -= 0x7FFFFFFF;
        }
    }
    return MA_TRUE;
}
static ma_uint32 ma_dr_mp3_decode_next_frame_ex__callbacks(ma_dr_mp3* pMP3, ma_dr_mp3d_sample_t* pPCMFrames)
{
    ma_uint32 pcmFramesRead = 0;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(pMP3->onRead != NULL);
    if (pMP3->atEnd) {
        return 0;
    }
    for (;;) {
        ma_dr_mp3dec_frame_info info;
        if (pMP3->dataSize < MA_DR_MP3_MIN_DATA_CHUNK_SIZE) {
            size_t bytesRead;
            if (pMP3->pData != NULL) {
                MA_DR_MP3_MOVE_MEMORY(pMP3->pData, pMP3->pData + pMP3->dataConsumed, pMP3->dataSize);
            }
            pMP3->dataConsumed = 0;
            if (pMP3->dataCapacity < MA_DR_MP3_DATA_CHUNK_SIZE) {
                ma_uint8* pNewData;
                size_t newDataCap;
                newDataCap = MA_DR_MP3_DATA_CHUNK_SIZE;
                pNewData = (ma_uint8*)ma_dr_mp3__realloc_from_callbacks(pMP3->pData, newDataCap, pMP3->dataCapacity, &pMP3->allocationCallbacks);
                if (pNewData == NULL) {
                    return 0;
                }
                pMP3->pData = pNewData;
                pMP3->dataCapacity = newDataCap;
            }
            bytesRead = ma_dr_mp3__on_read(pMP3, pMP3->pData + pMP3->dataSize, (pMP3->dataCapacity - pMP3->dataSize));
            if (bytesRead == 0) {
                if (pMP3->dataSize == 0) {
                    pMP3->atEnd = MA_TRUE;
                    return 0;
                }
            }
            pMP3->dataSize += bytesRead;
        }
        if (pMP3->dataSize > INT_MAX) {
            pMP3->atEnd = MA_TRUE;
            return 0;
        }
        MA_DR_MP3_ASSERT(pMP3->pData != NULL);
        MA_DR_MP3_ASSERT(pMP3->dataCapacity > 0);
        if (pMP3->pData == NULL) {
            return 0;
        }
        pcmFramesRead = ma_dr_mp3dec_decode_frame(&pMP3->decoder, pMP3->pData + pMP3->dataConsumed, (int)pMP3->dataSize, pPCMFrames, &info);
        if (info.frame_bytes > 0) {
            pMP3->dataConsumed += (size_t)info.frame_bytes;
            pMP3->dataSize     -= (size_t)info.frame_bytes;
        }
        if (pcmFramesRead > 0) {
            pcmFramesRead = ma_dr_mp3_hdr_frame_samples(pMP3->decoder.header);
            pMP3->pcmFramesConsumedInMP3Frame = 0;
            pMP3->pcmFramesRemainingInMP3Frame = pcmFramesRead;
            pMP3->mp3FrameChannels = info.channels;
            pMP3->mp3FrameSampleRate = info.hz;
            break;
        } else if (info.frame_bytes == 0) {
            size_t bytesRead;
            MA_DR_MP3_MOVE_MEMORY(pMP3->pData, pMP3->pData + pMP3->dataConsumed, pMP3->dataSize);
            pMP3->dataConsumed = 0;
            if (pMP3->dataCapacity == pMP3->dataSize) {
                ma_uint8* pNewData;
                size_t newDataCap;
                newDataCap = pMP3->dataCapacity + MA_DR_MP3_DATA_CHUNK_SIZE;
                pNewData = (ma_uint8*)ma_dr_mp3__realloc_from_callbacks(pMP3->pData, newDataCap, pMP3->dataCapacity, &pMP3->allocationCallbacks);
                if (pNewData == NULL) {
                    return 0;
                }
                pMP3->pData = pNewData;
                pMP3->dataCapacity = newDataCap;
            }
            bytesRead = ma_dr_mp3__on_read(pMP3, pMP3->pData + pMP3->dataSize, (pMP3->dataCapacity - pMP3->dataSize));
            if (bytesRead == 0) {
                pMP3->atEnd = MA_TRUE;
                return 0;
            }
            pMP3->dataSize += bytesRead;
        }
    };
    return pcmFramesRead;
}
static ma_uint32 ma_dr_mp3_decode_next_frame_ex__memory(ma_dr_mp3* pMP3, ma_dr_mp3d_sample_t* pPCMFrames)
{
    ma_uint32 pcmFramesRead = 0;
    ma_dr_mp3dec_frame_info info;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(pMP3->memory.pData != NULL);
    if (pMP3->atEnd) {
        return 0;
    }
    for (;;) {
        pcmFramesRead = ma_dr_mp3dec_decode_frame(&pMP3->decoder, pMP3->memory.pData + pMP3->memory.currentReadPos, (int)(pMP3->memory.dataSize - pMP3->memory.currentReadPos), pPCMFrames, &info);
        if (pcmFramesRead > 0) {
            pcmFramesRead = ma_dr_mp3_hdr_frame_samples(pMP3->decoder.header);
            pMP3->pcmFramesConsumedInMP3Frame  = 0;
            pMP3->pcmFramesRemainingInMP3Frame = pcmFramesRead;
            pMP3->mp3FrameChannels             = info.channels;
            pMP3->mp3FrameSampleRate           = info.hz;
            break;
        } else if (info.frame_bytes > 0) {
            pMP3->memory.currentReadPos += (size_t)info.frame_bytes;
        } else {
            break;
        }
    }
    pMP3->memory.currentReadPos += (size_t)info.frame_bytes;
    return pcmFramesRead;
}
static ma_uint32 ma_dr_mp3_decode_next_frame_ex(ma_dr_mp3* pMP3, ma_dr_mp3d_sample_t* pPCMFrames)
{
    if (pMP3->memory.pData != NULL && pMP3->memory.dataSize > 0) {
        return ma_dr_mp3_decode_next_frame_ex__memory(pMP3, pPCMFrames);
    } else {
        return ma_dr_mp3_decode_next_frame_ex__callbacks(pMP3, pPCMFrames);
    }
}
static ma_uint32 ma_dr_mp3_decode_next_frame(ma_dr_mp3* pMP3)
{
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    return ma_dr_mp3_decode_next_frame_ex(pMP3, (ma_dr_mp3d_sample_t*)pMP3->pcmFrames);
}
#if 0
static ma_uint32 ma_dr_mp3_seek_next_frame(ma_dr_mp3* pMP3)
{
    ma_uint32 pcmFrameCount;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    pcmFrameCount = ma_dr_mp3_decode_next_frame_ex(pMP3, NULL);
    if (pcmFrameCount == 0) {
        return 0;
    }
    pMP3->currentPCMFrame             += pcmFrameCount;
    pMP3->pcmFramesConsumedInMP3Frame  = pcmFrameCount;
    pMP3->pcmFramesRemainingInMP3Frame = 0;
    return pcmFrameCount;
}
#endif
static ma_bool32 ma_dr_mp3_init_internal(ma_dr_mp3* pMP3, ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(onRead != NULL);
    ma_dr_mp3dec_init(&pMP3->decoder);
    pMP3->onRead = onRead;
    pMP3->onSeek = onSeek;
    pMP3->pUserData = pUserData;
    pMP3->allocationCallbacks = ma_dr_mp3_copy_allocation_callbacks_or_defaults(pAllocationCallbacks);
    if (pMP3->allocationCallbacks.onFree == NULL || (pMP3->allocationCallbacks.onMalloc == NULL && pMP3->allocationCallbacks.onRealloc == NULL)) {
        return MA_FALSE;
    }
    if (ma_dr_mp3_decode_next_frame(pMP3) == 0) {
        ma_dr_mp3__free_from_callbacks(pMP3->pData, &pMP3->allocationCallbacks);
        return MA_FALSE;
    }
    pMP3->channels   = pMP3->mp3FrameChannels;
    pMP3->sampleRate = pMP3->mp3FrameSampleRate;
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_mp3_init(ma_dr_mp3* pMP3, ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pMP3 == NULL || onRead == NULL) {
        return MA_FALSE;
    }
    MA_DR_MP3_ZERO_OBJECT(pMP3);
    return ma_dr_mp3_init_internal(pMP3, onRead, onSeek, pUserData, pAllocationCallbacks);
}
static size_t ma_dr_mp3__on_read_memory(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    ma_dr_mp3* pMP3 = (ma_dr_mp3*)pUserData;
    size_t bytesRemaining;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(pMP3->memory.dataSize >= pMP3->memory.currentReadPos);
    bytesRemaining = pMP3->memory.dataSize - pMP3->memory.currentReadPos;
    if (bytesToRead > bytesRemaining) {
        bytesToRead = bytesRemaining;
    }
    if (bytesToRead > 0) {
        MA_DR_MP3_COPY_MEMORY(pBufferOut, pMP3->memory.pData + pMP3->memory.currentReadPos, bytesToRead);
        pMP3->memory.currentReadPos += bytesToRead;
    }
    return bytesToRead;
}
static ma_bool32 ma_dr_mp3__on_seek_memory(void* pUserData, int byteOffset, ma_dr_mp3_seek_origin origin)
{
    ma_dr_mp3* pMP3 = (ma_dr_mp3*)pUserData;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    if (origin == ma_dr_mp3_seek_origin_current) {
        if (byteOffset > 0) {
            if (pMP3->memory.currentReadPos + byteOffset > pMP3->memory.dataSize) {
                byteOffset = (int)(pMP3->memory.dataSize - pMP3->memory.currentReadPos);
            }
        } else {
            if (pMP3->memory.currentReadPos < (size_t)-byteOffset) {
                byteOffset = -(int)pMP3->memory.currentReadPos;
            }
        }
        pMP3->memory.currentReadPos += byteOffset;
    } else {
        if ((ma_uint32)byteOffset <= pMP3->memory.dataSize) {
            pMP3->memory.currentReadPos = byteOffset;
        } else {
            pMP3->memory.currentReadPos = pMP3->memory.dataSize;
        }
    }
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_mp3_init_memory(ma_dr_mp3* pMP3, const void* pData, size_t dataSize, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pMP3 == NULL) {
        return MA_FALSE;
    }
    MA_DR_MP3_ZERO_OBJECT(pMP3);
    if (pData == NULL || dataSize == 0) {
        return MA_FALSE;
    }
    pMP3->memory.pData = (const ma_uint8*)pData;
    pMP3->memory.dataSize = dataSize;
    pMP3->memory.currentReadPos = 0;
    return ma_dr_mp3_init_internal(pMP3, ma_dr_mp3__on_read_memory, ma_dr_mp3__on_seek_memory, pMP3, pAllocationCallbacks);
}
#ifndef MA_DR_MP3_NO_STDIO
#include <stdio.h>
#include <wchar.h>
static size_t ma_dr_mp3__on_read_stdio(void* pUserData, void* pBufferOut, size_t bytesToRead)
{
    return fread(pBufferOut, 1, bytesToRead, (FILE*)pUserData);
}
static ma_bool32 ma_dr_mp3__on_seek_stdio(void* pUserData, int offset, ma_dr_mp3_seek_origin origin)
{
    return fseek((FILE*)pUserData, offset, (origin == ma_dr_mp3_seek_origin_current) ? SEEK_CUR : SEEK_SET) == 0;
}
MA_API ma_bool32 ma_dr_mp3_init_file(ma_dr_mp3* pMP3, const char* pFilePath, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_bool32 result;
    FILE* pFile;
    if (ma_fopen(&pFile, pFilePath, "rb") != MA_SUCCESS) {
        return MA_FALSE;
    }
    result = ma_dr_mp3_init(pMP3, ma_dr_mp3__on_read_stdio, ma_dr_mp3__on_seek_stdio, (void*)pFile, pAllocationCallbacks);
    if (result != MA_TRUE) {
        fclose(pFile);
        return result;
    }
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_mp3_init_file_w(ma_dr_mp3* pMP3, const wchar_t* pFilePath, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_bool32 result;
    FILE* pFile;
    if (ma_wfopen(&pFile, pFilePath, L"rb", pAllocationCallbacks) != MA_SUCCESS) {
        return MA_FALSE;
    }
    result = ma_dr_mp3_init(pMP3, ma_dr_mp3__on_read_stdio, ma_dr_mp3__on_seek_stdio, (void*)pFile, pAllocationCallbacks);
    if (result != MA_TRUE) {
        fclose(pFile);
        return result;
    }
    return MA_TRUE;
}
#endif
MA_API void ma_dr_mp3_uninit(ma_dr_mp3* pMP3)
{
    if (pMP3 == NULL) {
        return;
    }
#ifndef MA_DR_MP3_NO_STDIO
    if (pMP3->onRead == ma_dr_mp3__on_read_stdio) {
        FILE* pFile = (FILE*)pMP3->pUserData;
        if (pFile != NULL) {
            fclose(pFile);
            pMP3->pUserData = NULL;
        }
    }
#endif
    ma_dr_mp3__free_from_callbacks(pMP3->pData, &pMP3->allocationCallbacks);
}
#if defined(MA_DR_MP3_FLOAT_OUTPUT)
static void ma_dr_mp3_f32_to_s16(ma_int16* dst, const float* src, ma_uint64 sampleCount)
{
    ma_uint64 i;
    ma_uint64 i4;
    ma_uint64 sampleCount4;
    i = 0;
    sampleCount4 = sampleCount >> 2;
    for (i4 = 0; i4 < sampleCount4; i4 += 1) {
        float x0 = src[i+0];
        float x1 = src[i+1];
        float x2 = src[i+2];
        float x3 = src[i+3];
        x0 = ((x0 < -1) ? -1 : ((x0 > 1) ? 1 : x0));
        x1 = ((x1 < -1) ? -1 : ((x1 > 1) ? 1 : x1));
        x2 = ((x2 < -1) ? -1 : ((x2 > 1) ? 1 : x2));
        x3 = ((x3 < -1) ? -1 : ((x3 > 1) ? 1 : x3));
        x0 = x0 * 32767.0f;
        x1 = x1 * 32767.0f;
        x2 = x2 * 32767.0f;
        x3 = x3 * 32767.0f;
        dst[i+0] = (ma_int16)x0;
        dst[i+1] = (ma_int16)x1;
        dst[i+2] = (ma_int16)x2;
        dst[i+3] = (ma_int16)x3;
        i += 4;
    }
    for (; i < sampleCount; i += 1) {
        float x = src[i];
        x = ((x < -1) ? -1 : ((x > 1) ? 1 : x));
        x = x * 32767.0f;
        dst[i] = (ma_int16)x;
    }
}
#endif
#if !defined(MA_DR_MP3_FLOAT_OUTPUT)
static void ma_dr_mp3_s16_to_f32(float* dst, const ma_int16* src, ma_uint64 sampleCount)
{
    ma_uint64 i;
    for (i = 0; i < sampleCount; i += 1) {
        float x = (float)src[i];
        x = x * 0.000030517578125f;
        dst[i] = x;
    }
}
#endif
static ma_uint64 ma_dr_mp3_read_pcm_frames_raw(ma_dr_mp3* pMP3, ma_uint64 framesToRead, void* pBufferOut)
{
    ma_uint64 totalFramesRead = 0;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(pMP3->onRead != NULL);
    while (framesToRead > 0) {
        ma_uint32 framesToConsume = (ma_uint32)MA_DR_MP3_MIN(pMP3->pcmFramesRemainingInMP3Frame, framesToRead);
        if (pBufferOut != NULL) {
        #if defined(MA_DR_MP3_FLOAT_OUTPUT)
            float* pFramesOutF32 = (float*)MA_DR_MP3_OFFSET_PTR(pBufferOut,          sizeof(float) * totalFramesRead                   * pMP3->channels);
            float* pFramesInF32  = (float*)MA_DR_MP3_OFFSET_PTR(&pMP3->pcmFrames[0], sizeof(float) * pMP3->pcmFramesConsumedInMP3Frame * pMP3->mp3FrameChannels);
            MA_DR_MP3_COPY_MEMORY(pFramesOutF32, pFramesInF32, sizeof(float) * framesToConsume * pMP3->channels);
        #else
            ma_int16* pFramesOutS16 = (ma_int16*)MA_DR_MP3_OFFSET_PTR(pBufferOut,          sizeof(ma_int16) * totalFramesRead                   * pMP3->channels);
            ma_int16* pFramesInS16  = (ma_int16*)MA_DR_MP3_OFFSET_PTR(&pMP3->pcmFrames[0], sizeof(ma_int16) * pMP3->pcmFramesConsumedInMP3Frame * pMP3->mp3FrameChannels);
            MA_DR_MP3_COPY_MEMORY(pFramesOutS16, pFramesInS16, sizeof(ma_int16) * framesToConsume * pMP3->channels);
        #endif
        }
        pMP3->currentPCMFrame              += framesToConsume;
        pMP3->pcmFramesConsumedInMP3Frame  += framesToConsume;
        pMP3->pcmFramesRemainingInMP3Frame -= framesToConsume;
        totalFramesRead                    += framesToConsume;
        framesToRead                       -= framesToConsume;
        if (framesToRead == 0) {
            break;
        }
        MA_DR_MP3_ASSERT(pMP3->pcmFramesRemainingInMP3Frame == 0);
        if (ma_dr_mp3_decode_next_frame(pMP3) == 0) {
            break;
        }
    }
    return totalFramesRead;
}
MA_API ma_uint64 ma_dr_mp3_read_pcm_frames_f32(ma_dr_mp3* pMP3, ma_uint64 framesToRead, float* pBufferOut)
{
    if (pMP3 == NULL || pMP3->onRead == NULL) {
        return 0;
    }
#if defined(MA_DR_MP3_FLOAT_OUTPUT)
    return ma_dr_mp3_read_pcm_frames_raw(pMP3, framesToRead, pBufferOut);
#else
    {
        ma_int16 pTempS16[8192];
        ma_uint64 totalPCMFramesRead = 0;
        while (totalPCMFramesRead < framesToRead) {
            ma_uint64 framesJustRead;
            ma_uint64 framesRemaining = framesToRead - totalPCMFramesRead;
            ma_uint64 framesToReadNow = MA_DR_MP3_COUNTOF(pTempS16) / pMP3->channels;
            if (framesToReadNow > framesRemaining) {
                framesToReadNow = framesRemaining;
            }
            framesJustRead = ma_dr_mp3_read_pcm_frames_raw(pMP3, framesToReadNow, pTempS16);
            if (framesJustRead == 0) {
                break;
            }
            ma_dr_mp3_s16_to_f32((float*)MA_DR_MP3_OFFSET_PTR(pBufferOut, sizeof(float) * totalPCMFramesRead * pMP3->channels), pTempS16, framesJustRead * pMP3->channels);
            totalPCMFramesRead += framesJustRead;
        }
        return totalPCMFramesRead;
    }
#endif
}
MA_API ma_uint64 ma_dr_mp3_read_pcm_frames_s16(ma_dr_mp3* pMP3, ma_uint64 framesToRead, ma_int16* pBufferOut)
{
    if (pMP3 == NULL || pMP3->onRead == NULL) {
        return 0;
    }
#if !defined(MA_DR_MP3_FLOAT_OUTPUT)
    return ma_dr_mp3_read_pcm_frames_raw(pMP3, framesToRead, pBufferOut);
#else
    {
        float pTempF32[4096];
        ma_uint64 totalPCMFramesRead = 0;
        while (totalPCMFramesRead < framesToRead) {
            ma_uint64 framesJustRead;
            ma_uint64 framesRemaining = framesToRead - totalPCMFramesRead;
            ma_uint64 framesToReadNow = MA_DR_MP3_COUNTOF(pTempF32) / pMP3->channels;
            if (framesToReadNow > framesRemaining) {
                framesToReadNow = framesRemaining;
            }
            framesJustRead = ma_dr_mp3_read_pcm_frames_raw(pMP3, framesToReadNow, pTempF32);
            if (framesJustRead == 0) {
                break;
            }
            ma_dr_mp3_f32_to_s16((ma_int16*)MA_DR_MP3_OFFSET_PTR(pBufferOut, sizeof(ma_int16) * totalPCMFramesRead * pMP3->channels), pTempF32, framesJustRead * pMP3->channels);
            totalPCMFramesRead += framesJustRead;
        }
        return totalPCMFramesRead;
    }
#endif
}
static void ma_dr_mp3_reset(ma_dr_mp3* pMP3)
{
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    pMP3->pcmFramesConsumedInMP3Frame = 0;
    pMP3->pcmFramesRemainingInMP3Frame = 0;
    pMP3->currentPCMFrame = 0;
    pMP3->dataSize = 0;
    pMP3->atEnd = MA_FALSE;
    ma_dr_mp3dec_init(&pMP3->decoder);
}
static ma_bool32 ma_dr_mp3_seek_to_start_of_stream(ma_dr_mp3* pMP3)
{
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(pMP3->onSeek != NULL);
    if (!ma_dr_mp3__on_seek(pMP3, 0, ma_dr_mp3_seek_origin_start)) {
        return MA_FALSE;
    }
    ma_dr_mp3_reset(pMP3);
    return MA_TRUE;
}
static ma_bool32 ma_dr_mp3_seek_forward_by_pcm_frames__brute_force(ma_dr_mp3* pMP3, ma_uint64 frameOffset)
{
    ma_uint64 framesRead;
#if defined(MA_DR_MP3_FLOAT_OUTPUT)
    framesRead = ma_dr_mp3_read_pcm_frames_f32(pMP3, frameOffset, NULL);
#else
    framesRead = ma_dr_mp3_read_pcm_frames_s16(pMP3, frameOffset, NULL);
#endif
    if (framesRead != frameOffset) {
        return MA_FALSE;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_mp3_seek_to_pcm_frame__brute_force(ma_dr_mp3* pMP3, ma_uint64 frameIndex)
{
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    if (frameIndex == pMP3->currentPCMFrame) {
        return MA_TRUE;
    }
    if (frameIndex < pMP3->currentPCMFrame) {
        if (!ma_dr_mp3_seek_to_start_of_stream(pMP3)) {
            return MA_FALSE;
        }
    }
    MA_DR_MP3_ASSERT(frameIndex >= pMP3->currentPCMFrame);
    return ma_dr_mp3_seek_forward_by_pcm_frames__brute_force(pMP3, (frameIndex - pMP3->currentPCMFrame));
}
static ma_bool32 ma_dr_mp3_find_closest_seek_point(ma_dr_mp3* pMP3, ma_uint64 frameIndex, ma_uint32* pSeekPointIndex)
{
    ma_uint32 iSeekPoint;
    MA_DR_MP3_ASSERT(pSeekPointIndex != NULL);
    *pSeekPointIndex = 0;
    if (frameIndex < pMP3->pSeekPoints[0].pcmFrameIndex) {
        return MA_FALSE;
    }
    for (iSeekPoint = 0; iSeekPoint < pMP3->seekPointCount; ++iSeekPoint) {
        if (pMP3->pSeekPoints[iSeekPoint].pcmFrameIndex > frameIndex) {
            break;
        }
        *pSeekPointIndex = iSeekPoint;
    }
    return MA_TRUE;
}
static ma_bool32 ma_dr_mp3_seek_to_pcm_frame__seek_table(ma_dr_mp3* pMP3, ma_uint64 frameIndex)
{
    ma_dr_mp3_seek_point seekPoint;
    ma_uint32 priorSeekPointIndex;
    ma_uint16 iMP3Frame;
    ma_uint64 leftoverFrames;
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    MA_DR_MP3_ASSERT(pMP3->pSeekPoints != NULL);
    MA_DR_MP3_ASSERT(pMP3->seekPointCount > 0);
    if (ma_dr_mp3_find_closest_seek_point(pMP3, frameIndex, &priorSeekPointIndex)) {
        seekPoint = pMP3->pSeekPoints[priorSeekPointIndex];
    } else {
        seekPoint.seekPosInBytes     = 0;
        seekPoint.pcmFrameIndex      = 0;
        seekPoint.mp3FramesToDiscard = 0;
        seekPoint.pcmFramesToDiscard = 0;
    }
    if (!ma_dr_mp3__on_seek_64(pMP3, seekPoint.seekPosInBytes, ma_dr_mp3_seek_origin_start)) {
        return MA_FALSE;
    }
    ma_dr_mp3_reset(pMP3);
    for (iMP3Frame = 0; iMP3Frame < seekPoint.mp3FramesToDiscard; ++iMP3Frame) {
        ma_uint32 pcmFramesRead;
        ma_dr_mp3d_sample_t* pPCMFrames;
        pPCMFrames = NULL;
        if (iMP3Frame == seekPoint.mp3FramesToDiscard-1) {
            pPCMFrames = (ma_dr_mp3d_sample_t*)pMP3->pcmFrames;
        }
        pcmFramesRead = ma_dr_mp3_decode_next_frame_ex(pMP3, pPCMFrames);
        if (pcmFramesRead == 0) {
            return MA_FALSE;
        }
    }
    pMP3->currentPCMFrame = seekPoint.pcmFrameIndex - seekPoint.pcmFramesToDiscard;
    leftoverFrames = frameIndex - pMP3->currentPCMFrame;
    return ma_dr_mp3_seek_forward_by_pcm_frames__brute_force(pMP3, leftoverFrames);
}
MA_API ma_bool32 ma_dr_mp3_seek_to_pcm_frame(ma_dr_mp3* pMP3, ma_uint64 frameIndex)
{
    if (pMP3 == NULL || pMP3->onSeek == NULL) {
        return MA_FALSE;
    }
    if (frameIndex == 0) {
        return ma_dr_mp3_seek_to_start_of_stream(pMP3);
    }
    if (pMP3->pSeekPoints != NULL && pMP3->seekPointCount > 0) {
        return ma_dr_mp3_seek_to_pcm_frame__seek_table(pMP3, frameIndex);
    } else {
        return ma_dr_mp3_seek_to_pcm_frame__brute_force(pMP3, frameIndex);
    }
}
MA_API ma_bool32 ma_dr_mp3_get_mp3_and_pcm_frame_count(ma_dr_mp3* pMP3, ma_uint64* pMP3FrameCount, ma_uint64* pPCMFrameCount)
{
    ma_uint64 currentPCMFrame;
    ma_uint64 totalPCMFrameCount;
    ma_uint64 totalMP3FrameCount;
    if (pMP3 == NULL) {
        return MA_FALSE;
    }
    if (pMP3->onSeek == NULL) {
        return MA_FALSE;
    }
    currentPCMFrame = pMP3->currentPCMFrame;
    if (!ma_dr_mp3_seek_to_start_of_stream(pMP3)) {
        return MA_FALSE;
    }
    totalPCMFrameCount = 0;
    totalMP3FrameCount = 0;
    for (;;) {
        ma_uint32 pcmFramesInCurrentMP3Frame;
        pcmFramesInCurrentMP3Frame = ma_dr_mp3_decode_next_frame_ex(pMP3, NULL);
        if (pcmFramesInCurrentMP3Frame == 0) {
            break;
        }
        totalPCMFrameCount += pcmFramesInCurrentMP3Frame;
        totalMP3FrameCount += 1;
    }
    if (!ma_dr_mp3_seek_to_start_of_stream(pMP3)) {
        return MA_FALSE;
    }
    if (!ma_dr_mp3_seek_to_pcm_frame(pMP3, currentPCMFrame)) {
        return MA_FALSE;
    }
    if (pMP3FrameCount != NULL) {
        *pMP3FrameCount = totalMP3FrameCount;
    }
    if (pPCMFrameCount != NULL) {
        *pPCMFrameCount = totalPCMFrameCount;
    }
    return MA_TRUE;
}
MA_API ma_uint64 ma_dr_mp3_get_pcm_frame_count(ma_dr_mp3* pMP3)
{
    ma_uint64 totalPCMFrameCount;
    if (!ma_dr_mp3_get_mp3_and_pcm_frame_count(pMP3, NULL, &totalPCMFrameCount)) {
        return 0;
    }
    return totalPCMFrameCount;
}
MA_API ma_uint64 ma_dr_mp3_get_mp3_frame_count(ma_dr_mp3* pMP3)
{
    ma_uint64 totalMP3FrameCount;
    if (!ma_dr_mp3_get_mp3_and_pcm_frame_count(pMP3, &totalMP3FrameCount, NULL)) {
        return 0;
    }
    return totalMP3FrameCount;
}
static void ma_dr_mp3__accumulate_running_pcm_frame_count(ma_dr_mp3* pMP3, ma_uint32 pcmFrameCountIn, ma_uint64* pRunningPCMFrameCount, float* pRunningPCMFrameCountFractionalPart)
{
    float srcRatio;
    float pcmFrameCountOutF;
    ma_uint32 pcmFrameCountOut;
    srcRatio = (float)pMP3->mp3FrameSampleRate / (float)pMP3->sampleRate;
    MA_DR_MP3_ASSERT(srcRatio > 0);
    pcmFrameCountOutF = *pRunningPCMFrameCountFractionalPart + (pcmFrameCountIn / srcRatio);
    pcmFrameCountOut  = (ma_uint32)pcmFrameCountOutF;
    *pRunningPCMFrameCountFractionalPart = pcmFrameCountOutF - pcmFrameCountOut;
    *pRunningPCMFrameCount += pcmFrameCountOut;
}
typedef struct
{
    ma_uint64 bytePos;
    ma_uint64 pcmFrameIndex;
} ma_dr_mp3__seeking_mp3_frame_info;
MA_API ma_bool32 ma_dr_mp3_calculate_seek_points(ma_dr_mp3* pMP3, ma_uint32* pSeekPointCount, ma_dr_mp3_seek_point* pSeekPoints)
{
    ma_uint32 seekPointCount;
    ma_uint64 currentPCMFrame;
    ma_uint64 totalMP3FrameCount;
    ma_uint64 totalPCMFrameCount;
    if (pMP3 == NULL || pSeekPointCount == NULL || pSeekPoints == NULL) {
        return MA_FALSE;
    }
    seekPointCount = *pSeekPointCount;
    if (seekPointCount == 0) {
        return MA_FALSE;
    }
    currentPCMFrame = pMP3->currentPCMFrame;
    if (!ma_dr_mp3_get_mp3_and_pcm_frame_count(pMP3, &totalMP3FrameCount, &totalPCMFrameCount)) {
        return MA_FALSE;
    }
    if (totalMP3FrameCount < MA_DR_MP3_SEEK_LEADING_MP3_FRAMES+1) {
        seekPointCount = 1;
        pSeekPoints[0].seekPosInBytes     = 0;
        pSeekPoints[0].pcmFrameIndex      = 0;
        pSeekPoints[0].mp3FramesToDiscard = 0;
        pSeekPoints[0].pcmFramesToDiscard = 0;
    } else {
        ma_uint64 pcmFramesBetweenSeekPoints;
        ma_dr_mp3__seeking_mp3_frame_info mp3FrameInfo[MA_DR_MP3_SEEK_LEADING_MP3_FRAMES+1];
        ma_uint64 runningPCMFrameCount = 0;
        float runningPCMFrameCountFractionalPart = 0;
        ma_uint64 nextTargetPCMFrame;
        ma_uint32 iMP3Frame;
        ma_uint32 iSeekPoint;
        if (seekPointCount > totalMP3FrameCount-1) {
            seekPointCount = (ma_uint32)totalMP3FrameCount-1;
        }
        pcmFramesBetweenSeekPoints = totalPCMFrameCount / (seekPointCount+1);
        if (!ma_dr_mp3_seek_to_start_of_stream(pMP3)) {
            return MA_FALSE;
        }
        for (iMP3Frame = 0; iMP3Frame < MA_DR_MP3_SEEK_LEADING_MP3_FRAMES+1; ++iMP3Frame) {
            ma_uint32 pcmFramesInCurrentMP3FrameIn;
            MA_DR_MP3_ASSERT(pMP3->streamCursor >= pMP3->dataSize);
            mp3FrameInfo[iMP3Frame].bytePos       = pMP3->streamCursor - pMP3->dataSize;
            mp3FrameInfo[iMP3Frame].pcmFrameIndex = runningPCMFrameCount;
            pcmFramesInCurrentMP3FrameIn = ma_dr_mp3_decode_next_frame_ex(pMP3, NULL);
            if (pcmFramesInCurrentMP3FrameIn == 0) {
                return MA_FALSE;
            }
            ma_dr_mp3__accumulate_running_pcm_frame_count(pMP3, pcmFramesInCurrentMP3FrameIn, &runningPCMFrameCount, &runningPCMFrameCountFractionalPart);
        }
        nextTargetPCMFrame = 0;
        for (iSeekPoint = 0; iSeekPoint < seekPointCount; ++iSeekPoint) {
            nextTargetPCMFrame += pcmFramesBetweenSeekPoints;
            for (;;) {
                if (nextTargetPCMFrame < runningPCMFrameCount) {
                    pSeekPoints[iSeekPoint].seekPosInBytes     = mp3FrameInfo[0].bytePos;
                    pSeekPoints[iSeekPoint].pcmFrameIndex      = nextTargetPCMFrame;
                    pSeekPoints[iSeekPoint].mp3FramesToDiscard = MA_DR_MP3_SEEK_LEADING_MP3_FRAMES;
                    pSeekPoints[iSeekPoint].pcmFramesToDiscard = (ma_uint16)(nextTargetPCMFrame - mp3FrameInfo[MA_DR_MP3_SEEK_LEADING_MP3_FRAMES-1].pcmFrameIndex);
                    break;
                } else {
                    size_t i;
                    ma_uint32 pcmFramesInCurrentMP3FrameIn;
                    for (i = 0; i < MA_DR_MP3_COUNTOF(mp3FrameInfo)-1; ++i) {
                        mp3FrameInfo[i] = mp3FrameInfo[i+1];
                    }
                    mp3FrameInfo[MA_DR_MP3_COUNTOF(mp3FrameInfo)-1].bytePos       = pMP3->streamCursor - pMP3->dataSize;
                    mp3FrameInfo[MA_DR_MP3_COUNTOF(mp3FrameInfo)-1].pcmFrameIndex = runningPCMFrameCount;
                    pcmFramesInCurrentMP3FrameIn = ma_dr_mp3_decode_next_frame_ex(pMP3, NULL);
                    if (pcmFramesInCurrentMP3FrameIn == 0) {
                        pSeekPoints[iSeekPoint].seekPosInBytes     = mp3FrameInfo[0].bytePos;
                        pSeekPoints[iSeekPoint].pcmFrameIndex      = nextTargetPCMFrame;
                        pSeekPoints[iSeekPoint].mp3FramesToDiscard = MA_DR_MP3_SEEK_LEADING_MP3_FRAMES;
                        pSeekPoints[iSeekPoint].pcmFramesToDiscard = (ma_uint16)(nextTargetPCMFrame - mp3FrameInfo[MA_DR_MP3_SEEK_LEADING_MP3_FRAMES-1].pcmFrameIndex);
                        break;
                    }
                    ma_dr_mp3__accumulate_running_pcm_frame_count(pMP3, pcmFramesInCurrentMP3FrameIn, &runningPCMFrameCount, &runningPCMFrameCountFractionalPart);
                }
            }
        }
        if (!ma_dr_mp3_seek_to_start_of_stream(pMP3)) {
            return MA_FALSE;
        }
        if (!ma_dr_mp3_seek_to_pcm_frame(pMP3, currentPCMFrame)) {
            return MA_FALSE;
        }
    }
    *pSeekPointCount = seekPointCount;
    return MA_TRUE;
}
MA_API ma_bool32 ma_dr_mp3_bind_seek_table(ma_dr_mp3* pMP3, ma_uint32 seekPointCount, ma_dr_mp3_seek_point* pSeekPoints)
{
    if (pMP3 == NULL) {
        return MA_FALSE;
    }
    if (seekPointCount == 0 || pSeekPoints == NULL) {
        pMP3->seekPointCount = 0;
        pMP3->pSeekPoints = NULL;
    } else {
        pMP3->seekPointCount = seekPointCount;
        pMP3->pSeekPoints = pSeekPoints;
    }
    return MA_TRUE;
}
static float* ma_dr_mp3__full_read_and_close_f32(ma_dr_mp3* pMP3, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount)
{
    ma_uint64 totalFramesRead = 0;
    ma_uint64 framesCapacity = 0;
    float* pFrames = NULL;
    float temp[4096];
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    for (;;) {
        ma_uint64 framesToReadRightNow = MA_DR_MP3_COUNTOF(temp) / pMP3->channels;
        ma_uint64 framesJustRead = ma_dr_mp3_read_pcm_frames_f32(pMP3, framesToReadRightNow, temp);
        if (framesJustRead == 0) {
            break;
        }
        if (framesCapacity < totalFramesRead + framesJustRead) {
            ma_uint64 oldFramesBufferSize;
            ma_uint64 newFramesBufferSize;
            ma_uint64 newFramesCap;
            float* pNewFrames;
            newFramesCap = framesCapacity * 2;
            if (newFramesCap < totalFramesRead + framesJustRead) {
                newFramesCap = totalFramesRead + framesJustRead;
            }
            oldFramesBufferSize = framesCapacity * pMP3->channels * sizeof(float);
            newFramesBufferSize = newFramesCap   * pMP3->channels * sizeof(float);
            if (newFramesBufferSize > (ma_uint64)MA_SIZE_MAX) {
                break;
            }
            pNewFrames = (float*)ma_dr_mp3__realloc_from_callbacks(pFrames, (size_t)newFramesBufferSize, (size_t)oldFramesBufferSize, &pMP3->allocationCallbacks);
            if (pNewFrames == NULL) {
                ma_dr_mp3__free_from_callbacks(pFrames, &pMP3->allocationCallbacks);
                break;
            }
            pFrames = pNewFrames;
            framesCapacity = newFramesCap;
        }
        MA_DR_MP3_COPY_MEMORY(pFrames + totalFramesRead*pMP3->channels, temp, (size_t)(framesJustRead*pMP3->channels*sizeof(float)));
        totalFramesRead += framesJustRead;
        if (framesJustRead != framesToReadRightNow) {
            break;
        }
    }
    if (pConfig != NULL) {
        pConfig->channels   = pMP3->channels;
        pConfig->sampleRate = pMP3->sampleRate;
    }
    ma_dr_mp3_uninit(pMP3);
    if (pTotalFrameCount) {
        *pTotalFrameCount = totalFramesRead;
    }
    return pFrames;
}
static ma_int16* ma_dr_mp3__full_read_and_close_s16(ma_dr_mp3* pMP3, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount)
{
    ma_uint64 totalFramesRead = 0;
    ma_uint64 framesCapacity = 0;
    ma_int16* pFrames = NULL;
    ma_int16 temp[4096];
    MA_DR_MP3_ASSERT(pMP3 != NULL);
    for (;;) {
        ma_uint64 framesToReadRightNow = MA_DR_MP3_COUNTOF(temp) / pMP3->channels;
        ma_uint64 framesJustRead = ma_dr_mp3_read_pcm_frames_s16(pMP3, framesToReadRightNow, temp);
        if (framesJustRead == 0) {
            break;
        }
        if (framesCapacity < totalFramesRead + framesJustRead) {
            ma_uint64 newFramesBufferSize;
            ma_uint64 oldFramesBufferSize;
            ma_uint64 newFramesCap;
            ma_int16* pNewFrames;
            newFramesCap = framesCapacity * 2;
            if (newFramesCap < totalFramesRead + framesJustRead) {
                newFramesCap = totalFramesRead + framesJustRead;
            }
            oldFramesBufferSize = framesCapacity * pMP3->channels * sizeof(ma_int16);
            newFramesBufferSize = newFramesCap   * pMP3->channels * sizeof(ma_int16);
            if (newFramesBufferSize > (ma_uint64)MA_SIZE_MAX) {
                break;
            }
            pNewFrames = (ma_int16*)ma_dr_mp3__realloc_from_callbacks(pFrames, (size_t)newFramesBufferSize, (size_t)oldFramesBufferSize, &pMP3->allocationCallbacks);
            if (pNewFrames == NULL) {
                ma_dr_mp3__free_from_callbacks(pFrames, &pMP3->allocationCallbacks);
                break;
            }
            pFrames = pNewFrames;
            framesCapacity = newFramesCap;
        }
        MA_DR_MP3_COPY_MEMORY(pFrames + totalFramesRead*pMP3->channels, temp, (size_t)(framesJustRead*pMP3->channels*sizeof(ma_int16)));
        totalFramesRead += framesJustRead;
        if (framesJustRead != framesToReadRightNow) {
            break;
        }
    }
    if (pConfig != NULL) {
        pConfig->channels   = pMP3->channels;
        pConfig->sampleRate = pMP3->sampleRate;
    }
    ma_dr_mp3_uninit(pMP3);
    if (pTotalFrameCount) {
        *pTotalFrameCount = totalFramesRead;
    }
    return pFrames;
}
MA_API float* ma_dr_mp3_open_and_read_pcm_frames_f32(ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_mp3 mp3;
    if (!ma_dr_mp3_init(&mp3, onRead, onSeek, pUserData, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_mp3__full_read_and_close_f32(&mp3, pConfig, pTotalFrameCount);
}
MA_API ma_int16* ma_dr_mp3_open_and_read_pcm_frames_s16(ma_dr_mp3_read_proc onRead, ma_dr_mp3_seek_proc onSeek, void* pUserData, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_mp3 mp3;
    if (!ma_dr_mp3_init(&mp3, onRead, onSeek, pUserData, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_mp3__full_read_and_close_s16(&mp3, pConfig, pTotalFrameCount);
}
MA_API float* ma_dr_mp3_open_memory_and_read_pcm_frames_f32(const void* pData, size_t dataSize, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_mp3 mp3;
    if (!ma_dr_mp3_init_memory(&mp3, pData, dataSize, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_mp3__full_read_and_close_f32(&mp3, pConfig, pTotalFrameCount);
}
MA_API ma_int16* ma_dr_mp3_open_memory_and_read_pcm_frames_s16(const void* pData, size_t dataSize, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_mp3 mp3;
    if (!ma_dr_mp3_init_memory(&mp3, pData, dataSize, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_mp3__full_read_and_close_s16(&mp3, pConfig, pTotalFrameCount);
}
#ifndef MA_DR_MP3_NO_STDIO
MA_API float* ma_dr_mp3_open_file_and_read_pcm_frames_f32(const char* filePath, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_mp3 mp3;
    if (!ma_dr_mp3_init_file(&mp3, filePath, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_mp3__full_read_and_close_f32(&mp3, pConfig, pTotalFrameCount);
}
MA_API ma_int16* ma_dr_mp3_open_file_and_read_pcm_frames_s16(const char* filePath, ma_dr_mp3_config* pConfig, ma_uint64* pTotalFrameCount, const ma_allocation_callbacks* pAllocationCallbacks)
{
    ma_dr_mp3 mp3;
    if (!ma_dr_mp3_init_file(&mp3, filePath, pAllocationCallbacks)) {
        return NULL;
    }
    return ma_dr_mp3__full_read_and_close_s16(&mp3, pConfig, pTotalFrameCount);
}
#endif
MA_API void* ma_dr_mp3_malloc(size_t sz, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        return ma_dr_mp3__malloc_from_callbacks(sz, pAllocationCallbacks);
    } else {
        return ma_dr_mp3__malloc_default(sz, NULL);
    }
}
MA_API void ma_dr_mp3_free(void* p, const ma_allocation_callbacks* pAllocationCallbacks)
{
    if (pAllocationCallbacks != NULL) {
        ma_dr_mp3__free_from_callbacks(p, pAllocationCallbacks);
    } else {
        ma_dr_mp3__free_default(p, NULL);
    }
}
#endif
/* dr_mp3_c end */
#endif  /* MA_DR_MP3_IMPLEMENTATION */
#endif  /* MA_NO_MP3 */


/* End globally disabled warnings. */
#if defined(_MSC_VER)
    #pragma warning(pop)
#endif

#endif  /* miniaudio_c */

/*
This software is available as a choice of the following licenses. Choose
whichever you prefer.

===============================================================================
ALTERNATIVE 1 - Public Domain (www.unlicense.org)
===============================================================================
This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
software, either in source code form or as a compiled binary, for any purpose,
commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this
software dedicate any and all copyright interest in the software to the public
domain. We make this dedication for the benefit of the public at large and to
the detriment of our heirs and successors. We intend this dedication to be an
overt act of relinquishment in perpetuity of all present and future rights to
this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to <http://unlicense.org/>

===============================================================================
ALTERNATIVE 2 - MIT No Attribution
===============================================================================
Copyright 2025 David Reid

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
