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 "aviheader.h"
  23 #include "ms_hdr.h"
  24 struct MPOpts;
  25 struct demuxer;
  26
  27 // Stream headers:
  28
  29 #define SH_COMMON \
  30   struct MPOpts *opts; \
  31   struct demux_stream *ds;   \
  32   struct codecs *codec; \
  33   unsigned int format; \
  34   int initialized; \
  35   float stream_delay; /* number of seconds stream should be delayed (according to dwStart or similar) */ \
  36   /* things needed for parsing */ \
  37   int needs_parsing; \
  38   struct AVCodecContext *avctx; \
  39   struct AVCodecParserContext *parser; \
  40   /* audio: last known pts value in output from decoder \
  41    * video: predicted/interpolated PTS of the current frame */ \
  42   double pts; \
  43   /* codec-specific: */ \
  44   void* context;   /* codec-specific stuff (usually HANDLE or struct pointer) */ \
  45   char* lang; /* track language */ \
  46   int default_track; \
  47
  48 typedef struct sh_common {
  49   SH_COMMON
  50 } sh_common_t;
  51
  52 typedef struct sh_audio {
  53   SH_COMMON
  54   int aid;
  55   // output format:
  56   int sample_format;
  57   int samplerate;
  58   int samplesize;
  59   int channels;
  60   int o_bps; // == samplerate*samplesize*channels   (uncompr. bytes/sec)
  61   int i_bps; // == bitrate  (compressed bytes/sec)
  62   // in buffers:
  63   int audio_in_minsize; // max. compressed packet size (== min. in buffer size)
  64   char* a_in_buffer;
  65   int a_in_buffer_len;
  66   int a_in_buffer_size;
  67   // decoder buffers:
  68   int audio_out_minsize; // max. uncompressed packet size (==min. out buffsize)
  69   char* a_buffer;
  70   int a_buffer_len;
  71   int a_buffer_size;
  72   // output buffers:
  73   char* a_out_buffer;
  74   int a_out_buffer_len;
  75   int a_out_buffer_size;
  76 //  void* audio_out;        // the audio_out handle, used for this audio stream
  77   struct af_stream *afilter;          // the audio filter stream
  78   struct ad_functions *ad_driver;
  79 #ifdef CONFIG_DYNAMIC_PLUGINS
  80   void *dec_handle;
  81 #endif
  82   // win32-compatible codec parameters:
  83   AVIStreamHeader audio;
  84   WAVEFORMATEX* wf;
  85   // codec-specific:
  86   unsigned char* codecdata; // extra header data passed from demuxer to codec
  87   int codecdata_len;
  88   int pts_bytes; // bytes output by decoder after last known pts
  89 } sh_audio_t;
  90
  91 typedef struct sh_video {
  92   SH_COMMON
  93   int vid;
  94   float timer;            // absolute time in video stream, since last start/seek
  95   // frame counters:
  96   float num_frames;       // number of frames played
  97   int num_frames_decoded; // number of frames decoded
  98   // timing (mostly for mpeg):
  99   double i_pts;   // PTS for the _next_ I/P frame
 100   float next_frame_time;
 101   double last_pts;
 102   double buffered_pts[20];
 103   int num_buffered_pts;
 104   double codec_reordered_pts;
 105   double prev_codec_reordered_pts;
 106   int num_reordered_pts_problems;
 107   double sorted_pts;
 108   double prev_sorted_pts;
 109   int num_sorted_pts_problems;
 110   int pts_assoc_mode;
 111   // output format: (set by demuxer)
 112   float fps;              // frames per second (set only if constant fps)
 113   float frametime;        // 1/fps
 114   float aspect;           // aspect ratio stored in the file (for prescaling)
 115   float stream_aspect;  // aspect ratio stored in the media headers (e.g. in DVD IFO files)
 116   int i_bps;              // == bitrate  (compressed bytes/sec)
 117   int disp_w,disp_h;      // display size (filled by fileformat parser)
 118   // output driver/filters: (set by libmpcodecs core)
 119   unsigned int outfmtidx;
 120   struct vf_instance *vfilter;          // the video filter chain, used for this video stream
 121   int output_flags;       // query_format() results for output filters+vo
 122   const struct vd_functions *vd_driver;
 123   int vf_initialized;
 124 #ifdef CONFIG_DYNAMIC_PLUGINS
 125   void *dec_handle;
 126 #endif
 127   // win32-compatible codec parameters:
 128   AVIStreamHeader video;
 129   BITMAPINFOHEADER* bih;
 130   void* ImageDesc; // for quicktime codecs
 131 } sh_video_t;
 132
 133 typedef struct sh_sub {
 134   SH_COMMON
 135   int sid;
 136   char type;                    // t = text, v = VobSub, a = SSA/ASS
 137   unsigned char* extradata; // extra header data passed from demuxer
 138   int extradata_len;
 139   struct ass_track *ass_track;  // for SSA/ASS streams (type == 'a')
 140 } sh_sub_t;
 141
 142 // demuxer.c:
 143 #define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
 144 sh_audio_t* new_sh_audio_aid(struct demuxer *demuxer,int id,int aid);
 145 #define new_sh_video(d, i) new_sh_video_vid(d, i, i)
 146 sh_video_t* new_sh_video_vid(struct demuxer *demuxer,int id,int vid);
 147 #define new_sh_sub(d, i) new_sh_sub_sid(d, i, i)
 148 sh_sub_t *new_sh_sub_sid(struct demuxer *demuxer, int id, int sid);
 149 void free_sh_audio(struct demuxer *demuxer, int id);
 150 void free_sh_video(sh_video_t *sh);
 151
 152 // video.c:
 153 int video_read_properties(sh_video_t *sh_video);
 154 int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps);
 155
 156 #endif /* MPLAYER_STHEADER_H */