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 libav_codec_id;                                                 \
  37     int initialized;                                                    \
  38     /* number of seconds stream should be delayed                       \
  39      * (according to dwStart or similar) */                             \
  40     float stream_delay;                                                 \
  41     /* things needed for parsing */                                     \
  42     bool needs_parsing;                                                 \
  43     struct AVCodecContext *avctx;                                       \
  44     struct AVCodecParserContext *parser;                                \
  45     /* audio: last known pts value in output from decoder               \
  46      * video: predicted/interpolated PTS of the current frame */        \
  47     double pts;                                                         \
  48     /* decoder context */                                               \
  49     void *context;                                                      \
  50     const char *codecname;                                              \
  51     char *lang;   /* track language */                                  \
  52     char *title;  /* track title */                                     \
  53     bool default_track;                                                 \
  54
  55 typedef struct sh_common {
  56     SH_COMMON
  57 } sh_common_t;
  58
  59 typedef struct sh_audio {
  60     SH_COMMON
  61     int aid;
  62     // output format:
  63     int sample_format;
  64     int samplerate;
  65     int container_out_samplerate;
  66     int samplesize;
  67     int channels;
  68     int o_bps; // == samplerate*samplesize*channels   (uncompr. bytes/sec)
  69     int i_bps; // == bitrate  (compressed bytes/sec)
  70     // in buffers:
  71     int audio_in_minsize;   // initial size to allocate for a_in_buffer if any
  72     char *a_in_buffer;      // input buffer used by some decoders
  73     int a_in_buffer_len;
  74     int a_in_buffer_size;
  75     // decoder buffers:
  76     int audio_out_minsize;  // minimal output from decoder may be this much
  77     char *a_buffer;         // buffer for decoder output
  78     int a_buffer_len;
  79     int a_buffer_size;
  80     struct af_stream *afilter;          // the audio filter stream
  81     const struct ad_functions *ad_driver;
  82     // win32-compatible codec parameters:
  83     AVIStreamHeader audio;
  84     WAVEFORMATEX *wf;
  85     // note codec extradata may be either under "wf" or "codecdata"
  86     unsigned char *codecdata;
  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     double i_pts;   // PTS for the _next_ I/P frame (internal mpeg demuxing)
  99     float next_frame_time;
 100     double last_pts;
 101     double buffered_pts[32];
 102     int num_buffered_pts;
 103     double codec_reordered_pts;
 104     double prev_codec_reordered_pts;
 105     int num_reordered_pts_problems;
 106     double sorted_pts;
 107     double prev_sorted_pts;
 108     int num_sorted_pts_problems;
 109     int pts_assoc_mode;
 110     // output format: (set by demuxer)
 111     float fps;            // frames per second (set only if constant fps)
 112     float frametime;      // 1/fps
 113     float aspect;         // aspect ratio stored in the file (for prescaling)
 114     float stream_aspect;  // aspect ratio in media headers (DVD IFO files)
 115     int i_bps;            // == bitrate  (compressed bytes/sec)
 116     int disp_w, disp_h;   // display size (filled by demuxer)
 117     int colorspace;       // enum mp_csp
 118     int color_range;      // enum mp_csp_levels
 119     // output driver/filters: (set by libmpcodecs core)
 120     unsigned int outfmt;
 121     unsigned int outfmtidx;
 122     struct vf_instance *vfilter;  // video filter chain
 123     int output_flags;       // query_format() results for output filters+vo
 124     const struct vd_functions *vd_driver;
 125     int vf_initialized;   // -1 failed, 0 not done, 1 done
 126     // win32-compatible codec parameters:
 127     AVIStreamHeader video;
 128     BITMAPINFOHEADER *bih;
 129     void *ImageDesc; // for quicktime codecs
 130     bool is_attached_pic;
 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, m, x, b, d, p
 137     bool active; // after track switch decoder may stay initialized, not active
 138     unsigned char *extradata;   // extra header data passed from demuxer
 139     int extradata_len;
 140     const struct sd_functions *sd_driver;
 141 } sh_sub_t;
 142
 143 // demuxer.c:
 144 #define new_sh_audio(d, i) new_sh_audio_aid(d, i, i)
 145 struct sh_audio *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 struct sh_video *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 struct sh_sub *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(struct sh_video *sh);
 154
 155 const char *sh_sub_type2str(int type);
 156
 157 // video.c:
 158 int video_read_properties(struct sh_video *sh_video);
 159 int video_read_frame(struct sh_video *sh_video, float *frame_time_ptr,
 160                      unsigned char **start, int force_fps);
 161
 162 #endif /* MPLAYER_STHEADER_H */