libmpdemux/stheader.h

   1 #ifndef __ST_HEADER_H
   2 #define __ST_HEADER_H 1
   3
   4 #include "aviheader.h"
   5 #include "ms_hdr.h"
   6
   7 // Stream headers:
   8
   9 typedef struct {
  10   int aid;
  11   demux_stream_t *ds;
  12   struct codecs_st *codec;
  13   unsigned int format;
  14   int inited;
  15   double delay;    // relative (to sh_video->timer) time in audio stream
  16   float stream_delay; // number of seconds stream should be delayed (according to dwStart or similar)
  17   // output format:
  18   int sample_format;
  19   int samplerate;
  20   int samplesize;
  21   int channels;
  22   int o_bps; // == samplerate*samplesize*channels   (uncompr. bytes/sec)
  23   int i_bps; // == bitrate  (compressed bytes/sec)
  24   // in buffers:
  25   int audio_in_minsize; // max. compressed packet size (== min. in buffer size)
  26   char* a_in_buffer;
  27   int a_in_buffer_len;
  28   int a_in_buffer_size;
  29   // decoder buffers:
  30   int audio_out_minsize; // max. uncompressed packet size (==min. out buffsize)
  31   char* a_buffer;
  32   int a_buffer_len;
  33   int a_buffer_size;
  34   // output buffers:
  35   char* a_out_buffer;
  36   int a_out_buffer_len;
  37   int a_out_buffer_size;
  38 //  void* audio_out;        // the audio_out handle, used for this audio stream
  39   void* afilter;          // the audio filter stream
  40   struct ad_functions_s* ad_driver;
  41 #ifdef DYNAMIC_PLUGINS
  42   void *dec_handle;
  43 #endif
  44   // win32-compatible codec parameters:
  45   AVIStreamHeader audio;
  46   WAVEFORMATEX* wf;
  47   // codec-specific:
  48   void* context; // codec-specific stuff (usually HANDLE or struct pointer)
  49   unsigned char* codecdata; // extra header data passed from demuxer to codec
  50   int codecdata_len;
  51   double pts;  // last known pts value in output from decoder
  52   int pts_bytes; // bytes output by decoder after last known pts
  53 } sh_audio_t;
  54
  55 typedef struct {
  56   int vid;
  57   demux_stream_t *ds;
  58   struct codecs_st *codec;
  59   unsigned int format;
  60   int inited;
  61   float timer;            // absolute time in video stream, since last start/seek
  62   float stream_delay; // number of seconds stream should be delayed (according to dwStart or similar)
  63   // frame counters:
  64   float num_frames;       // number of frames played
  65   int num_frames_decoded; // number of frames decoded
  66   // timing (mostly for mpeg):
  67   double pts;     // predicted/interpolated PTS of the current frame
  68   double i_pts;   // PTS for the _next_ I/P frame
  69   float next_frame_time;
  70   double last_pts;
  71   double buffered_pts[20];
  72   int num_buffered_pts;
  73   // output format: (set by demuxer)
  74   float fps;              // frames per second (set only if constant fps)
  75   float frametime;        // 1/fps
  76   float aspect;           // aspect ratio stored in the file (for prescaling)
  77   int i_bps;              // == bitrate  (compressed bytes/sec)
  78   int disp_w,disp_h;      // display size (filled by fileformat parser)
  79   // output driver/filters: (set by libmpcodecs core)
  80   unsigned int outfmtidx;
  81   void* video_out;        // the video_out handle, used for this video stream
  82   void* vfilter;          // the video filter chain, used for this video stream
  83   int vf_inited;
  84 #ifdef DYNAMIC_PLUGINS
  85   void *dec_handle;
  86 #endif
  87   // win32-compatible codec parameters:
  88   AVIStreamHeader video;
  89   BITMAPINFOHEADER* bih;
  90   void* ImageDesc; // for quicktime codecs
  91   // codec-specific:
  92   void* context;   // codec-specific stuff (usually HANDLE or struct pointer)
  93 } sh_video_t;
  94
  95 typedef struct {
  96   int sid;
  97   char type;                    // t = text, v = VobSub, a = SSA/ASS
  98   int has_palette;              // If we have a valid palette
  99   unsigned int palette[16];     // for VobSubs
 100   int width, height;            // for VobSubs
 101   int custom_colors;
 102   unsigned int colors[4];
 103   int forced_subs_only;
 104 #ifdef USE_ASS
 105   ass_track_t* ass_track;  // for SSA/ASS streams (type == 'a')
 106 #endif
 107 } sh_sub_t;
 108
 109 // demuxer.c:
 110 #define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
 111 sh_audio_t* new_sh_audio_aid(demuxer_t *demuxer,int id,int aid);
 112 #define new_sh_video(d, i) new_sh_video_vid(d, i, i)
 113 sh_video_t* new_sh_video_vid(demuxer_t *demuxer,int id,int vid);
 114 #define new_sh_sub(d, i) new_sh_sub_sid(d, i, i)
 115 sh_sub_t *new_sh_sub_sid(demuxer_t *demuxer, int id, int sid);
 116 void free_sh_audio(demuxer_t *demuxer, int id);
 117 void free_sh_video(sh_video_t *sh);
 118
 119 // video.c:
 120 int video_read_properties(sh_video_t *sh_video);
 121 int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps);
 122
 123 #endif