/*
    Copyright (c) 2005-2020 Intel Corporation

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

/*-------------------------------------------------------------*/
/*--- Public header file for the library.                   ---*/
/*---                                               bzlib.h ---*/
/*-------------------------------------------------------------*/

/* ------------------------------------------------------------------
   The original source for this example:
   This file is part of bzip2/libbzip2, a program and library for
   lossless, block-sorting data compression.

   bzip2/libbzip2 version 1.0.6 of 6 September 2010
   Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org>

   This program, "bzip2", the associated library "libbzip2", and all
   documentation, are copyright (C) 1996-2010 Julian R Seward.  All
   rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

   2. The origin of this software must not be misrepresented; you must 
   not claim that you wrote the original software.  If you use this 
   software in a product, an acknowledgment in the product 
   documentation would be appreciated but is not required.

   3. Altered source versions must be plainly marked as such, and must
   not be misrepresented as being the original software.

   4. The name of the author may not be used to endorse or promote 
   products derived from this software without specific prior written 
   permission.

   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

   Julian Seward, jseward@bzip.org
   bzip2/libbzip2 version 1.0.6 of 6 September 2010
   ------------------------------------------------------------------ */


#ifndef _BZLIB_H
#define _BZLIB_H

#ifdef __cplusplus
extern "C" {
#endif

#define BZ_RUN               0
#define BZ_FLUSH             1
#define BZ_FINISH            2

#define BZ_OK                0
#define BZ_RUN_OK            1
#define BZ_FLUSH_OK          2
#define BZ_FINISH_OK         3
#define BZ_STREAM_END        4
#define BZ_SEQUENCE_ERROR    (-1)
#define BZ_PARAM_ERROR       (-2)
#define BZ_MEM_ERROR         (-3)
#define BZ_DATA_ERROR        (-4)
#define BZ_DATA_ERROR_MAGIC  (-5)
#define BZ_IO_ERROR          (-6)
#define BZ_UNEXPECTED_EOF    (-7)
#define BZ_OUTBUFF_FULL      (-8)
#define BZ_CONFIG_ERROR      (-9)

typedef 
   struct {
      char *next_in;
      unsigned int avail_in;
      unsigned int total_in_lo32;
      unsigned int total_in_hi32;

      char *next_out;
      unsigned int avail_out;
      unsigned int total_out_lo32;
      unsigned int total_out_hi32;

      void *state;

      void *(*bzalloc)(void *,int,int);
      void (*bzfree)(void *,void *);
      void *opaque;
   } 
   bz_stream;


#ifndef BZ_IMPORT
#define BZ_EXPORT
#endif

#ifndef BZ_NO_STDIO
/* Need a definitition for FILE */
#include <stdio.h>
#endif

#ifdef _WIN32
#   include <windows.h>
#   ifdef small
      /* windows.h define small to char */
#      undef small
#   endif
#   ifdef BZ_EXPORT
#   define BZ_API(func) WINAPI func
#   define BZ_EXTERN extern
#   else
   /* import windows dll dynamically */
#   define BZ_API(func) (WINAPI * func)
#   define BZ_EXTERN
#   endif
#else
#   define BZ_API(func) func
#   define BZ_EXTERN extern
#endif


/*-- Core (low-level) library functions --*/

BZ_EXTERN int BZ_API(BZ2_bzCompressInit) ( 
      bz_stream* strm, 
      int        blockSize100k, 
      int        verbosity, 
      int        workFactor 
   );

BZ_EXTERN int BZ_API(BZ2_bzCompress) ( 
      bz_stream* strm, 
      int action 
   );

BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) ( 
      bz_stream* strm 
   );

BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) ( 
      bz_stream *strm, 
      int       verbosity, 
      int       small
   );

BZ_EXTERN int BZ_API(BZ2_bzDecompress) ( 
      bz_stream* strm 
   );

BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) ( 
      bz_stream *strm 
   );



/*-- High(er) level library functions --*/

#ifndef BZ_NO_STDIO
#define BZ_MAX_UNUSED 5000

typedef void BZFILE;

BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) ( 
      int*  bzerror,   
      FILE* f, 
      int   verbosity, 
      int   small,
      void* unused,    
      int   nUnused 
   );

BZ_EXTERN void BZ_API(BZ2_bzReadClose) ( 
      int*    bzerror, 
      BZFILE* b 
   );

BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) ( 
      int*    bzerror, 
      BZFILE* b, 
      void**  unused,  
      int*    nUnused 
   );

BZ_EXTERN int BZ_API(BZ2_bzRead) ( 
      int*    bzerror, 
      BZFILE* b, 
      void*   buf, 
      int     len 
   );

BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) ( 
      int*  bzerror,      
      FILE* f, 
      int   blockSize100k, 
      int   verbosity, 
      int   workFactor 
   );

BZ_EXTERN void BZ_API(BZ2_bzWrite) ( 
      int*    bzerror, 
      BZFILE* b, 
      void*   buf, 
      int     len 
   );

BZ_EXTERN void BZ_API(BZ2_bzWriteClose) ( 
      int*          bzerror, 
      BZFILE*       b, 
      int           abandon, 
      unsigned int* nbytes_in, 
      unsigned int* nbytes_out 
   );

BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) ( 
      int*          bzerror, 
      BZFILE*       b, 
      int           abandon, 
      unsigned int* nbytes_in_lo32, 
      unsigned int* nbytes_in_hi32, 
      unsigned int* nbytes_out_lo32, 
      unsigned int* nbytes_out_hi32
   );
#endif


/*-- Utility functions --*/

BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) ( 
      char*         dest, 
      unsigned int* destLen,
      char*         source, 
      unsigned int  sourceLen,
      int           blockSize100k, 
      int           verbosity, 
      int           workFactor 
   );

BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) ( 
      char*         dest, 
      unsigned int* destLen,
      char*         source, 
      unsigned int  sourceLen,
      int           small, 
      int           verbosity 
   );


/*--
   Code contributed by Yoshioka Tsuneo (tsuneo@rr.iij4u.or.jp)
   to support better zlib compatibility.
   This code is not _officially_ part of libbzip2 (yet);
   I haven't tested it, documented it, or considered the
   threading-safeness of it.
   If this code breaks, please contact both Yoshioka and me.
--*/

BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) (
      void
   );

#ifndef BZ_NO_STDIO
BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) (
      const char *path,
      const char *mode
   );

BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) (
      int        fd,
      const char *mode
   );
         
BZ_EXTERN int BZ_API(BZ2_bzread) (
      BZFILE* b, 
      void* buf, 
      int len 
   );

BZ_EXTERN int BZ_API(BZ2_bzwrite) (
      BZFILE* b, 
      void*   buf, 
      int     len 
   );

BZ_EXTERN int BZ_API(BZ2_bzflush) (
      BZFILE* b
   );

BZ_EXTERN void BZ_API(BZ2_bzclose) (
      BZFILE* b
   );

BZ_EXTERN const char * BZ_API(BZ2_bzerror) (
      BZFILE *b, 
      int    *errnum
   );
#endif

#ifdef __cplusplus
}
#endif

#endif

/*-------------------------------------------------------------*/
/*--- end                                           bzlib.h ---*/
/*-------------------------------------------------------------*/
