libmpdemux/muxer.h

   1 #ifndef MUXER_H
   2 #define MUXER_H
   3
   4 #define MUXER_MAX_STREAMS 16
   5
   6 #define MUXER_TYPE_VIDEO 0
   7 #define MUXER_TYPE_AUDIO 1
   8
   9 #define MUXER_TYPE_AVI 0
  10 #define MUXER_TYPE_MPEG 1
  11 #define MUXER_TYPE_RAWVIDEO 2
  12 #define MUXER_TYPE_LAVF 3
  13 #define MUXER_TYPE_RAWAUDIO 4
  14
  15
  16 typedef struct {
  17   // muxer data:
  18   int type;  // audio or video
  19   int id;    // stream no
  20   uint32_t ckid; // chunk id (00dc 01wb etc)
  21   double timer;
  22   off_t size;
  23   float aspect; // aspect ratio of this stream (set by ve_*.c)
  24   // buffering:
  25   unsigned char *buffer;
  26   unsigned int buffer_size;
  27   unsigned int buffer_len;
  28   // mpeg block buffer:
  29   unsigned char *b_buffer;
  30   unsigned int b_buffer_size;   //size of b_buffer
  31   unsigned int b_buffer_ptr;    //index to next data to write
  32   unsigned int b_buffer_len;    //len of next data to write
  33   // muxer frame buffer:
  34   unsigned int muxbuf_seen;
  35   // source stream:
  36   void* source; // sh_audio or sh_video
  37   int codec; // codec used for encoding. 0 means copy
  38   // avi stream header:
  39   AVIStreamHeader h;  // Rate/Scale and SampleSize must be filled by caller!
  40   // stream specific:
  41   WAVEFORMATEX *wf;
  42   BITMAPINFOHEADER *bih;   // in format
  43   int encoder_delay; // in number of frames
  44   int decoder_delay; // in number of frames
  45   int imgfmt;
  46   // mpeg specific:
  47   size_t ipb[3]; // sizes of I/P/B frames
  48   // muxer of that stream
  49   struct muxer_t *muxer;
  50   void *priv; // private stream specific data stored by the muxer
  51
  52   int vbv_size;
  53   int max_rate;
  54   int avg_rate;
  55 } muxer_stream_t;
  56
  57 typedef struct {
  58   uint32_t id;
  59   char *text;
  60 } muxer_info_t;
  61
  62 typedef struct muxer_t{
  63   // encoding:
  64   MainAVIHeader avih;
  65   off_t movi_start;
  66   off_t movi_end;
  67   off_t file_end; // for MPEG it's system timestamp in 1/90000 s
  68   float audio_delay_fix;
  69   // index:
  70   AVIINDEXENTRY *idx;
  71   int idx_pos;
  72   int idx_size;
  73   // streams:
  74   int num_videos;       // for MPEG recalculations
  75   int num_audios;
  76   unsigned int sysrate; // max rate in bytes/s
  77   //int num_streams;
  78   muxer_stream_t* def_v;  // default video stream (for general headers)
  79   muxer_stream_t* streams[MUXER_MAX_STREAMS];
  80   // muxer frame buffer:
  81   struct muxbuf_t * muxbuf;
  82   int muxbuf_num;
  83   int muxbuf_skip_buffer;
  84   // functions:
  85   stream_t *stream;
  86   void (*fix_stream_parameters)(muxer_stream_t *);
  87   void (*cont_write_chunk)(muxer_stream_t *,size_t,unsigned int, double dts, double pts);
  88   void (*cont_write_header)(struct muxer_t *);
  89   void (*cont_write_index)(struct muxer_t *);
  90   muxer_stream_t* (*cont_new_stream)(struct muxer_t *,int);
  91   void *priv;
  92 } muxer_t;
  93
  94 /* muxer frame buffer */
  95 typedef struct muxbuf_t {
  96   muxer_stream_t *stream; /* pointer back to corresponding stream */
  97   double dts; /* decode timestamp / time at which this packet should be feeded into the decoder */
  98   double pts; /* presentation timestamp / time at which the data in this packet will be presented to the user */
  99   unsigned char *buffer;
 100   size_t len;
 101   unsigned int flags;
 102 } muxbuf_t;
 103
 104 extern char *force_fourcc;
 105
 106 muxer_t *muxer_new_muxer(int type,stream_t *stream);
 107 #define muxer_new_stream(muxer,a) muxer->cont_new_stream(muxer,a)
 108 #define muxer_stream_fix_parameters(muxer, a) muxer->fix_stream_parameters(a)
 109 void muxer_write_chunk(muxer_stream_t *s, size_t len, unsigned int flags, double dts, double pts);
 110 #define muxer_write_header(muxer) muxer->cont_write_header(muxer)
 111 #define muxer_write_index(muxer) muxer->cont_write_index(muxer)
 112
 113 int muxer_init_muxer_avi(muxer_t *);
 114 int muxer_init_muxer_mpeg(muxer_t *);
 115 int muxer_init_muxer_rawvideo(muxer_t *);
 116 int muxer_init_muxer_lavf(muxer_t *);
 117 int muxer_init_muxer_rawaudio(muxer_t *);
 118
 119 #endif /* MUXER_H */