libmpdemux/stheader.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_STHEADER_H
  20 #define MPLAYER_STHEADER_H
  21
  22 #include "demuxer.h"
  23 #include "aviheader.h"
  24 #include "ms_hdr.h"
  25
  26 // Stream headers:
  27
  28 #define SH_COMMON \
  29   demux_stream_t *ds; \
  30   struct codecs *codec; \
  31   unsigned int format; \
  32   int initialized; \
  33   float stream_delay; /* number of seconds stream should be delayed (according to dwStart or similar) */ \
  34   /* things needed for parsing */ \
  35   int needs_parsing; \
  36   struct AVCodecContext *avctx; \
  37   struct AVCodecParserContext *parser; \
  38   /* audio: last known pts value in output from decoder \
  39    * video: predicted/interpolated PTS of the current frame */ \
  40   double pts; \
  41   /* codec-specific: */ \
  42   void* context;   /* codec-specific stuff (usually HANDLE or struct pointer) */ \
  43   char* lang; /* track language */ \
  44   int default_track; \
  45
  46 typedef struct sh_common {
  47   SH_COMMON
  48 } sh_common_t;
  49
  50 typedef struct sh_audio {
  51   SH_COMMON
  52   int aid;
  53   // output format:
  54   int sample_format;
  55   int samplerate;
  56   int samplesize;
  57   int channels;
  58   int o_bps; // == samplerate*samplesize*channels   (uncompr. bytes/sec)
  59   int i_bps; // == bitrate  (compressed bytes/sec)
  60   // in buffers:
  61   int audio_in_minsize; // max. compressed packet size (== min. in buffer size)
  62   char* a_in_buffer;
  63   int a_in_buffer_len;
  64   int a_in_buffer_size;
  65   // decoder buffers:
  66   int audio_out_minsize; // max. uncompressed packet size (==min. out buffsize)
  67   char* a_buffer;
  68   int a_buffer_len;
  69   int a_buffer_size;
  70   // output buffers:
  71   char* a_out_buffer;
  72   int a_out_buffer_len;
  73   int a_out_buffer_size;
  74 //  void* audio_out;        // the audio_out handle, used for this audio stream
  75   struct af_stream *afilter;          // the audio filter stream
  76   struct ad_functions *ad_driver;
  77 #ifdef CONFIG_DYNAMIC_PLUGINS
  78   void *dec_handle;
  79 #endif
  80   // win32-compatible codec parameters:
  81   AVIStreamHeader audio;
  82   WAVEFORMATEX* wf;
  83   // codec-specific:
  84   unsigned char* codecdata; // extra header data passed from demuxer to codec
  85   int codecdata_len;
  86   int pts_bytes; // bytes output by decoder after last known pts
  87 } sh_audio_t;
  88
  89 typedef struct sh_video {
  90   SH_COMMON
  91   int vid;
  92   float timer;            // absolute time in video stream, since last start/seek
  93   // frame counters:
  94   float num_frames;       // number of frames played
  95   int num_frames_decoded; // number of frames decoded
  96   // timing (mostly for mpeg):
  97   double i_pts;   // PTS for the _next_ I/P frame
  98   float next_frame_time;
  99   double last_pts;
 100   double buffered_pts[20];
 101   int num_buffered_pts;
 102   // output format: (set by demuxer)
 103   float fps;              // frames per second (set only if constant fps)
 104   float frametime;        // 1/fps
 105   float aspect;           // aspect ratio stored in the file (for prescaling)
 106   float stream_aspect;  // aspect ratio stored in the media headers (e.g. in DVD IFO files)
 107   int i_bps;              // == bitrate  (compressed bytes/sec)
 108   int disp_w,disp_h;      // display size (filled by fileformat parser)
 109   // output driver/filters: (set by libmpcodecs core)
 110   unsigned int outfmtidx;
 111   struct vf_instance *vfilter;          // the video filter chain, used for this video stream
 112   int vf_initialized;
 113 #ifdef CONFIG_DYNAMIC_PLUGINS
 114   void *dec_handle;
 115 #endif
 116   // win32-compatible codec parameters:
 117   AVIStreamHeader video;
 118   BITMAPINFOHEADER* bih;
 119   void* ImageDesc; // for quicktime codecs
 120 } sh_video_t;
 121
 122 typedef struct sh_sub {
 123   SH_COMMON
 124   int sid;
 125   char type;                    // t = text, v = VobSub, a = SSA/ASS
 126   unsigned char* extradata; // extra header data passed from demuxer
 127   int extradata_len;
 128 #ifdef CONFIG_ASS
 129   ass_track_t* ass_track;  // for SSA/ASS streams (type == 'a')
 130 #endif
 131 } sh_sub_t;
 132
 133 // demuxer.c:
 134 #define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
 135 sh_audio_t* new_sh_audio_aid(demuxer_t *demuxer,int id,int aid);
 136 #define new_sh_video(d, i) new_sh_video_vid(d, i, i)
 137 sh_video_t* new_sh_video_vid(demuxer_t *demuxer,int id,int vid);
 138 #define new_sh_sub(d, i) new_sh_sub_sid(d, i, i)
 139 sh_sub_t *new_sh_sub_sid(demuxer_t *demuxer, int id, int sid);
 140 void free_sh_audio(demuxer_t *demuxer, int id);
 141 void free_sh_video(sh_video_t *sh);
 142
 143 // video.c:
 144 int video_read_properties(sh_video_t *sh_video);
 145 int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps);
 146
 147 #endif /* MPLAYER_STHEADER_H */