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 container_out_samplerate;
  59   int samplesize;
  60   int channels;
  61   int o_bps; // == samplerate*samplesize*channels   (uncompr. bytes/sec)
  62   int i_bps; // == bitrate  (compressed bytes/sec)
  63   // in buffers:
  64   int audio_in_minsize; // max. compressed packet size (== min. in buffer size)
  65   char* a_in_buffer;
  66   int a_in_buffer_len;
  67   int a_in_buffer_size;
  68   // decoder buffers:
  69   int audio_out_minsize; // max. uncompressed packet size (==min. out buffsize)
  70   char* a_buffer;
  71   int a_buffer_len;
  72   int a_buffer_size;
  73   // output buffers:
  74   char* a_out_buffer;
  75   int a_out_buffer_len;
  76   int a_out_buffer_size;
  77 //  void* audio_out;        // the audio_out handle, used for this audio stream
  78   struct af_stream *afilter;          // the audio filter stream
  79   const struct ad_functions *ad_driver;
  80 #ifdef CONFIG_DYNAMIC_PLUGINS
  81   void *dec_handle;
  82 #endif
  83   // win32-compatible codec parameters:
  84   AVIStreamHeader audio;
  85   WAVEFORMATEX* wf;
  86   // codec-specific:
  87   unsigned char* codecdata; // extra header data passed from demuxer to codec
  88   int codecdata_len;
  89   int pts_bytes; // bytes output by decoder after last known pts
  90 } sh_audio_t;
  91
  92 typedef struct sh_video {
  93   SH_COMMON
  94   int vid;
  95   float timer;            // absolute time in video stream, since last start/seek
  96   // frame counters:
  97   float num_frames;       // number of frames played
  98   int num_frames_decoded; // number of frames decoded
  99   // timing (mostly for mpeg):
 100   double i_pts;   // PTS for the _next_ I/P frame
 101   float next_frame_time;
 102   double last_pts;
 103   double buffered_pts[20];
 104   int num_buffered_pts;
 105   double codec_reordered_pts;
 106   double prev_codec_reordered_pts;
 107   int num_reordered_pts_problems;
 108   double sorted_pts;
 109   double prev_sorted_pts;
 110   int num_sorted_pts_problems;
 111   int pts_assoc_mode;
 112   // output format: (set by demuxer)
 113   float fps;              // frames per second (set only if constant fps)
 114   float frametime;        // 1/fps
 115   float aspect;           // aspect ratio stored in the file (for prescaling)
 116   float stream_aspect;  // aspect ratio stored in the media headers (e.g. in DVD IFO files)
 117   int i_bps;              // == bitrate  (compressed bytes/sec)
 118   int disp_w,disp_h;      // display size (filled by fileformat parser)
 119   // output driver/filters: (set by libmpcodecs core)
 120   unsigned int outfmtidx;
 121   struct vf_instance *vfilter;          // the video filter chain, used for this video stream
 122   int output_flags;       // query_format() results for output filters+vo
 123   const struct vd_functions *vd_driver;
 124   int vf_initialized;
 125 #ifdef CONFIG_DYNAMIC_PLUGINS
 126   void *dec_handle;
 127 #endif
 128   // win32-compatible codec parameters:
 129   AVIStreamHeader video;
 130   BITMAPINFOHEADER* bih;
 131   void* ImageDesc; // for quicktime codecs
 132 } sh_video_t;
 133
 134 typedef struct sh_sub {
 135   SH_COMMON
 136   int sid;
 137   char type;                    // t = text, v = VobSub, a = SSA/ASS
 138   unsigned char* extradata; // extra header data passed from demuxer
 139   int extradata_len;
 140   struct ass_track *ass_track;  // for SSA/ASS streams (type == 'a')
 141 } sh_sub_t;
 142
 143 // demuxer.c:
 144 #define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
 145 sh_audio_t* new_sh_audio_aid(struct demuxer *demuxer,int id,int aid);
 146 #define new_sh_video(d, i) new_sh_video_vid(d, i, i)
 147 sh_video_t* new_sh_video_vid(struct demuxer *demuxer,int id,int vid);
 148 #define new_sh_sub(d, i) new_sh_sub_sid(d, i, i)
 149 sh_sub_t *new_sh_sub_sid(struct demuxer *demuxer, int id, int sid);
 150 struct sh_sub *new_sh_sub_sid_lang(struct demuxer *demuxer, int id, int sid,
 151                                    const char *lang);
 152 void free_sh_audio(struct demuxer *demuxer, int id);
 153 void free_sh_video(sh_video_t *sh);
 154
 155 const char *sh_sub_type2str(int type);
 156
 157 // video.c:
 158 int video_read_properties(sh_video_t *sh_video);
 159 int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps);
 160
 161 #endif /* MPLAYER_STHEADER_H */