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1、VideoState结构体 typedef struct VideoState { //ori SDL_Thread *parse_tid; //ori SDL_Thread *video_tid; HANDLE parse_tid; HANDLE video_tid; AVInputFormat *iformat; int no_background; int abort_request; int paused; int last_paused; int seek_req; int seek_flags; int64_t seek_pos; int64_t seek_rel; int read_pause_return; AVFormatContext *ic; int dtg_active_format; int audio_stream; int av_sync_type; double external_clock; /* external clock base */ int64_t external_clock_time; double audio_clock; double audio_diff_cum; /* used for AV difference average computation */ double audio_diff_avg_coef; double audio_diff_threshold; int audio_diff_avg_count; AVStream *audio_st; PacketQueue audioq; int audio_hw_buf_size; /* samples output by the codec. we reserve more space for avsync compensation */ DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]; DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]; uint8_t *audio_buf; unsigned int audio_buf_size; /* in bytes */ int audio_buf_index; /* in bytes */ AVPacket audio_pkt_temp; AVPacket audio_pkt; enum SampleFormat audio_src_fmt; AVAudioConvert *reformat_ctx; int show_audio; /* if true, display audio samples */ int16_t sample_array[SAMPLE_ARRAY_SIZE]; int sample_array_index; int last_i_start; //ori RDFTContext rdft; //ori int rdft_bits; int xpos; //ori SDL_Thread *subtitle_tid; HANDLE subtitle_tid; int subtitle_stream; int subtitle_stream_changed; AVStream *subtitle_st; PacketQueue subtitleq; SubPicture subpq[SUBPICTURE_QUEUE_SIZE]; int subpq_size, subpq_rindex, subpq_windex; //ori SDL_mutex *subpq_mutex; //ori SDL_cond *subpq_cond; CRITICAL_SECTION subpq_mutex; HANDLE subpq_cond; double frame_timer; double frame_last_pts; double frame_last_delay; double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame int video_stream; AVStream *video_st; PacketQueue videoq; double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used) double video_current_pts_drift; ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts int64_t video_current_pos; ///<current displayed file pos VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE]; int pictq_size, pictq_rindex, pictq_windex; //ori SDL_mutex *pictq_mutex; //ori SDL_cond *pictq_cond; CRITICAL_SECTION pictq_mutex; HANDLE pictq_cond; struct SwsContext *img_convert_ctx; // QETimer *video_timer; char filename[1024]; int width, height, xleft, ytop; HWND hWnd; int64_t faulty_pts; int64_t faulty_dts; int64_t last_dts_for_fault_detection; int64_t last_pts_for_fault_detection;} VideoState;
2、VideoPicture结构体
typedef struct VideoPicture { double pts; ///<presentation time stamp for this picture int64_t pos; ///<byte position in file //ori SDL_Overlay *bmp; // HBITMAP bmp; FrameRgb* pRgbFrame; int width, height; /* source height & width */ int allocated; //ori SDL_TimerID timer_id; DWORD timer_id; } VideoPicture;
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