libmpdemux/stheader.h

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