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 <stdbool.h>
  23
  24 #include "aviheader.h"
  25 #include "ms_hdr.h"
  26 struct MPOpts;
  27 struct demuxer;
  28
  29 // Stream headers:
  30
  31 #define SH_COMMON \
  32   struct MPOpts *opts; \
  33   struct demux_stream *ds;   \
  34   struct codecs *codec; \
  35   unsigned int format; \
  36   int initialized; \
  37   float stream_delay; /* number of seconds stream should be delayed (according to dwStart or similar) */ \
  38   /* things needed for parsing */ \
  39   int needs_parsing; \
  40   struct AVCodecContext *avctx; \
  41   struct AVCodecParserContext *parser; \
  42   /* audio: last known pts value in output from decoder \
  43    * video: predicted/interpolated PTS of the current frame */ \
  44   double pts; \
  45   /* codec-specific: */ \
  46   void* context;   /* codec-specific stuff (usually HANDLE or struct pointer) */ \
  47   char* lang; /* track language */ \
  48   int default_track; \
  49
  50 typedef struct sh_common {
  51   SH_COMMON
  52 } sh_common_t;
  53
  54 typedef struct sh_audio {
  55   SH_COMMON
  56   int aid;
  57   // output format:
  58   int sample_format;
  59   int samplerate;
  60   int container_out_samplerate;
  61   int samplesize;
  62   int channels;
  63   int o_bps; // == samplerate*samplesize*channels   (uncompr. bytes/sec)
  64   int i_bps; // == bitrate  (compressed bytes/sec)
  65   // in buffers:
  66   int audio_in_minsize; // max. compressed packet size (== min. in buffer size)
  67   char* a_in_buffer;
  68   int a_in_buffer_len;
  69   int a_in_buffer_size;
  70   // decoder buffers:
  71   int audio_out_minsize; // max. uncompressed packet size (==min. out buffsize)
  72   char* a_buffer;
  73   int a_buffer_len;
  74   int a_buffer_size;
  75   // output buffers:
  76   char* a_out_buffer;
  77   int a_out_buffer_len;
  78   int a_out_buffer_size;
  79 //  void* audio_out;        // the audio_out handle, used for this audio stream
  80   struct af_stream *afilter;          // the audio filter stream
  81   const struct ad_functions *ad_driver;
  82 #ifdef CONFIG_DYNAMIC_PLUGINS
  83   void *dec_handle;
  84 #endif
  85   // win32-compatible codec parameters:
  86   AVIStreamHeader audio;
  87   WAVEFORMATEX* wf;
  88   // codec-specific:
  89   unsigned char* codecdata; // extra header data passed from demuxer to codec
  90   int codecdata_len;
  91   int pts_bytes; // bytes output by decoder after last known pts
  92 } sh_audio_t;
  93
  94 typedef struct sh_video {
  95   SH_COMMON
  96   int vid;
  97   float timer;            // absolute time in video stream, since last start/seek
  98   // frame counters:
  99   float num_frames;       // number of frames played
 100   int num_frames_decoded; // number of frames decoded
 101   // timing (mostly for mpeg):
 102   double i_pts;   // PTS for the _next_ I/P frame
 103   float next_frame_time;
 104   double last_pts;
 105   double buffered_pts[20];
 106   int num_buffered_pts;
 107   double codec_reordered_pts;
 108   double prev_codec_reordered_pts;
 109   int num_reordered_pts_problems;
 110   double sorted_pts;
 111   double prev_sorted_pts;
 112   int num_sorted_pts_problems;
 113   int pts_assoc_mode;
 114   // output format: (set by demuxer)
 115   float fps;              // frames per second (set only if constant fps)
 116   float frametime;        // 1/fps
 117   float aspect;           // aspect ratio stored in the file (for prescaling)
 118   float stream_aspect;  // aspect ratio stored in the media headers (e.g. in DVD IFO files)
 119   int i_bps;              // == bitrate  (compressed bytes/sec)
 120   int disp_w,disp_h;      // display size (filled by fileformat parser)
 121   // output driver/filters: (set by libmpcodecs core)
 122   unsigned int outfmtidx;
 123   struct vf_instance *vfilter;          // the video filter chain, used for this video stream
 124   int output_flags;       // query_format() results for output filters+vo
 125   const struct vd_functions *vd_driver;
 126   int vf_initialized;
 127 #ifdef CONFIG_DYNAMIC_PLUGINS
 128   void *dec_handle;
 129 #endif
 130   // win32-compatible codec parameters:
 131   AVIStreamHeader video;
 132   BITMAPINFOHEADER* bih;
 133   void* ImageDesc; // for quicktime codecs
 134 } sh_video_t;
 135
 136 typedef struct sh_sub {
 137   SH_COMMON
 138   int sid;
 139   char type;                    // t = text, v = VobSub, a = SSA/ASS
 140   bool active;  // after track switch decoder may stay initialized, not active
 141   unsigned char* extradata; // extra header data passed from demuxer
 142   int extradata_len;
 143   const struct sd_functions *sd_driver;
 144 } sh_sub_t;
 145
 146 // demuxer.c:
 147 #define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
 148 sh_audio_t* new_sh_audio_aid(struct demuxer *demuxer,int id,int aid);
 149 #define new_sh_video(d, i) new_sh_video_vid(d, i, i)
 150 sh_video_t* new_sh_video_vid(struct demuxer *demuxer,int id,int vid);
 151 #define new_sh_sub(d, i) new_sh_sub_sid(d, i, i)
 152 sh_sub_t *new_sh_sub_sid(struct demuxer *demuxer, int id, int sid);
 153 struct sh_sub *new_sh_sub_sid_lang(struct demuxer *demuxer, int id, int sid,
 154                                    const char *lang);
 155 void free_sh_audio(struct demuxer *demuxer, int id);
 156 void free_sh_video(sh_video_t *sh);
 157
 158 const char *sh_sub_type2str(int type);
 159
 160 // video.c:
 161 int video_read_properties(sh_video_t *sh_video);
 162 int video_read_frame(sh_video_t* sh_video,float* frame_time_ptr,unsigned char** start,int force_fps);
 163
 164 #endif /* MPLAYER_STHEADER_H */