#include?“./libavformat/avformat.h“

#if?defined（CONFIG_WIN32）
#include?
#include?
#include?
#else
#include?
#include?
#endif

#include?

#include?
#include?
#include?

#ifdef?CONFIG_WIN32
#undef?main?//?We?don‘t?want?SDL?to?override?our?main（）
#endif

#pragma?comment（lib?“SDL.lib“）

#define?FF_QUIT_EVENT???（SDL_USEREVENT?+?2）

#define?MAX_VIDEOQ_SIZE?（5?*?256?*?1024）
#define?MAX_AUDIOQ_SIZE?（5?*?16?*?1024）

#define?VIDEO_PICTURE_QUEUE_SIZE?1

typedef?struct?PacketQueue
{
????AVPacketList?*first_pkt??*last_pkt;
????int?size;
????int?abort_request;
????SDL_mutex?*mutex;
????SDL_cond?*cond;
}?PacketQueue;

typedef?struct?VideoPicture
{
????SDL_Overlay?*bmp;
????int?width?height;?//?source?height?&?width
}?VideoPicture;

typedef?struct?VideoState
{
????SDL_Thread?*parse_tid;
????SDL_Thread?*video_tid;

????int?abort_request;

????AVFormatContext?*ic;

????int?audio_stream;?
????int?video_stream;

????AVStream?*audio_st;
????AVStream?*video_st;

????PacketQueue?audioq;
????PacketQueue?videoq;

????VideoPicture?pictq[VIDEO_PICTURE_QUEUE_SIZE];
????double?frame_last_delay;

????uint8_t?audio_buf[（AVCODEC_MAX_AUDIO_frame_SIZE?*3）?/?2];
????unsigned?int?audio_buf_size;
????int?audio_buf_index;
????AVPacket?audio_pkt;
????uint8_t?*audio_pkt_data;
????int?audio_pkt_size;

????SDL_mutex?*video_decoder_mutex;
????SDL_mutex?*audio_decoder_mutex;

????char?filename[240];

}?VideoState;

static?AVInputFormat?*file_iformat;
static?const?char?*input_filename;
static?VideoState?*cur_stream;

static?SDL_Surface?*screen;

int64_t?av_gettime（void）
{
#if?defined（CONFIG_WINCE）
????return?timeGetTime（）?*int64_t_C（1000）;
#elif?defined（CONFIG_WIN32）
????struct?_timeb?tb;
????_ftime（&tb）;
????return?（（int64_t）tb.time?*int64_t_C（1000）?+?（int64_t）tb.millitm）?*int64_t_C（1000）;
#else
????struct?timeval?tv;
????gettimeofday（&tv?NULL）;
????return?（int64_t）tv.tv_sec?*1000000+tv.tv_usec;
#endif
}

static?void?packet_queue_init（PacketQueue?*q）?//?packet?queue?handling
{
????memset（q?0?sizeof（PacketQueue））;
????q->mutex?=?SDL_CreateMutex（）;
????q->cond?=?SDL_CreateCond（）;
}

static?void?packet_queue_flush（PacketQueue?*q）
{
????AVPacketList?*pkt??*pkt1;

????SDL_LockMutex（q->mutex）;
????for?（pkt?=?q->first_pkt;?pkt?!=?NULL;?pkt?=?pkt1）
????{
????????pkt1?=?pkt->next;
????????av_free_packet（&pkt->pkt）;
????????av_freep（&pkt）;
????}
????q->last_pkt?=?NULL;
????q->first_pkt?=?NULL;
????q->size?=?0;
????SDL_UnlockMutex（q->mutex）;
}

static?void?packet_queue_end（PacketQueue?*q）
{
????packet_queue_flush（q）;
????SDL_DestroyMutex（q->mutex）;
????SDL_DestroyCond（q->cond）;
}

static?int?packet_queue_put（PacketQueue?*q?AVPacket?*pkt）
{
????AVPacketList?*pkt1;

????pkt1?=?av_malloc（sizeof（AVPacketList））;
????if?（!pkt1）
????????return??-?1;
????pkt1->pkt?=??