libmpdemux/muxer.h

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