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   // source stream:
  32   void* source; // sh_audio or sh_video
  33   int codec; // codec used for encoding. 0 means copy
  34   // avi stream header:
  35   AVIStreamHeader h;  // Rate/Scale and SampleSize must be filled by caller!
  36   // stream specific:
  37   WAVEFORMATEX *wf;
  38   BITMAPINFOHEADER *bih;   // in format
  39   // mpeg specific:
  40   unsigned int gop_start; // frame number of this GOP start
  41   size_t ipb[3]; // sizes of I/P/B frames
  42   // muxer of that stream
  43   struct muxer_t *muxer;
  44   void *priv; // private stream specific data stored by the muxer
  45 } muxer_stream_t;
  46
  47 typedef struct {
  48   uint32_t id;
  49   char *text;
  50 } muxer_info_t;
  51
  52 typedef struct muxer_t{
  53   // encoding:
  54   MainAVIHeader avih;
  55   off_t movi_start;
  56   off_t movi_end;
  57   off_t file_end; // for MPEG it's system timestamp in 1/90000 s
  58   // index:
  59   AVIINDEXENTRY *idx;
  60   int idx_pos;
  61   int idx_size;
  62   // streams:
  63   int num_videos;       // for MPEG recalculations
  64   int num_audios;
  65   unsigned int sysrate; // max rate in bytes/s
  66   //int num_streams;
  67   muxer_stream_t* def_v;  // default video stream (for general headers)
  68   muxer_stream_t* streams[MUXER_MAX_STREAMS];
  69   void (*fix_stream_parameters)(muxer_stream_t *);
  70   void (*cont_write_chunk)(muxer_stream_t *,size_t,unsigned int);
  71   void (*cont_write_header)(struct muxer_t *);
  72   void (*cont_write_index)(struct muxer_t *);
  73   muxer_stream_t* (*cont_new_stream)(struct muxer_t *,int);
  74   FILE* file;
  75   void *priv;
  76 } muxer_t;
  77
  78 muxer_t *muxer_new_muxer(int type,FILE *);
  79 #define muxer_new_stream(muxer,a) muxer->cont_new_stream(muxer,a)
  80 #define muxer_stream_fix_parameters(muxer, a) muxer->fix_stream_parameters(a)
  81 #define muxer_write_chunk(a,b,c) a->muxer->cont_write_chunk(a,b,c)
  82 #define muxer_write_header(muxer) muxer->cont_write_header(muxer)
  83 #define muxer_write_index(muxer) muxer->cont_write_index(muxer)
  84
  85 int muxer_init_muxer_avi(muxer_t *);
  86 int muxer_init_muxer_mpeg(muxer_t *);
  87 int muxer_init_muxer_rawvideo(muxer_t *);
  88 int muxer_init_muxer_lavf(muxer_t *);
  89 int muxer_init_muxer_rawaudio(muxer_t *);