/*
 * copyright (c) 2016 Zhang Rui
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVUTIL_APPLICATION_H
#define AVUTIL_APPLICATION_H

#include "libavutil/log.h"

#define AVAPP_EVENT_WILL_HTTP_OPEN  1 //AVAppHttpEvent
#define AVAPP_EVENT_DID_HTTP_OPEN   2 //AVAppHttpEvent
#define AVAPP_EVENT_WILL_HTTP_SEEK  3 //AVAppHttpEvent
#define AVAPP_EVENT_DID_HTTP_SEEK   4 //AVAppHttpEvent

#define AVAPP_EVENT_ASYNC_STATISTIC     0x11000 //AVAppAsyncStatistic
#define AVAPP_EVENT_ASYNC_READ_SPEED    0x11001 //AVAppAsyncReadSpeed
#define AVAPP_EVENT_IO_TRAFFIC          0x12204 //AVAppIOTraffic

#define AVAPP_CTRL_WILL_TCP_OPEN   0x20001 //AVAppTcpIOControl
#define AVAPP_CTRL_DID_TCP_OPEN    0x20002 //AVAppTcpIOControl

#define AVAPP_CTRL_WILL_HTTP_OPEN  0x20003 //AVAppIOControl
#define AVAPP_CTRL_WILL_LIVE_OPEN  0x20005 //AVAppIOControl

#define AVAPP_CTRL_WILL_CONCAT_SEGMENT_OPEN 0x20007 //AVAppIOControl

typedef struct AVAppIOControl {
    size_t  size;
    char    url[4096];      /* in, out */
    int     segment_index;  /* in, default = 0 */
    int     retry_counter;  /* in */

    int     is_handled;     /* out, default = false */
    int     is_url_changed; /* out, default = false */
} AVAppIOControl;

typedef struct AVAppTcpIOControl {
    int  error;
    int  family;
    char ip[96];
    int  port;
    int  fd;
} AVAppTcpIOControl;

typedef struct AVAppAsyncStatistic {
    size_t  size;
    int64_t buf_backwards;
    int64_t buf_forwards;
    int64_t buf_capacity;
} AVAppAsyncStatistic;

typedef struct AVAppAsyncReadSpeed {
    size_t  size;
    int     is_full_speed;
    int64_t io_bytes;
    int64_t elapsed_milli;
} AVAppAsyncReadSpeed;

typedef struct AVAppHttpEvent
{
    void    *obj;
    char     url[4096];
    int64_t  offset;
    int      error;
    int      http_code;
} AVAppHttpEvent;

typedef struct AVAppIOTraffic
{
    void   *obj;
    int     bytes;
} AVAppIOTraffic;

typedef struct AVApplicationContext AVApplicationContext;
struct AVApplicationContext {
    const AVClass *av_class;    /**< information for av_log(). Set by av_application_open(). */
    void *opaque;               /**< user data. */

    int (*func_on_app_event)(AVApplicationContext *h, int event_type ,void *obj, size_t size);
};

int  av_application_alloc(AVApplicationContext **ph, void *opaque);
int  av_application_open(AVApplicationContext **ph, void *opaque);
void av_application_close(AVApplicationContext *h);
void av_application_closep(AVApplicationContext **ph);

void av_application_on_http_event(AVApplicationContext *h, int event_type, AVAppHttpEvent *event);
void av_application_will_http_open(AVApplicationContext *h, void *obj, const char *url);
void av_application_did_http_open(AVApplicationContext *h, void *obj, const char *url, int error, int http_code);
void av_application_will_http_seek(AVApplicationContext *h, void *obj, const char *url, int64_t offset);
void av_application_did_http_seek(AVApplicationContext *h, void *obj, const char *url, int64_t offset, int error, int http_code);

void av_application_did_io_tcp_read(AVApplicationContext *h, void *obj, int bytes);

int  av_application_on_io_control(AVApplicationContext *h, int event_type, AVAppIOControl *control);

int av_application_on_tcp_will_open(AVApplicationContext *h);
int av_application_on_tcp_did_open(AVApplicationContext *h, int error, int fd);

void av_application_on_async_statistic(AVApplicationContext *h, AVAppAsyncStatistic *statistic);
void av_application_on_async_read_speed(AVApplicationContext *h, AVAppAsyncReadSpeed *speed);


#endif /* AVUTIL_APPLICATION_H */
