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#define MUXER_MAX_STREAMS 16
#define MUXER_TYPE_VIDEO 0
#define MUXER_TYPE_AUDIO 1
#define MUXER_TYPE_AVI 0
#define MUXER_TYPE_MPEG 1
#define MUXER_MPEG_BLOCKSIZE 2048 // 2048 or 2324 - ?
typedef struct {
// muxer data:
int type; // audio or video
int id; // stream no
uint32_t ckid; // chunk id (00dc 01wb etc)
double timer;
off_t size;
// buffering:
unsigned char *buffer;
unsigned int buffer_size;
unsigned int buffer_len;
// mpeg block buffer:
unsigned char *b_buffer;
unsigned int b_buffer_ptr;
// source stream:
void* source; // sh_audio or sh_video
int codec; // codec used for encoding. 0 means copy
// avi stream header:
AVIStreamHeader h; // Rate/Scale and SampleSize must be filled by caller!
// stream specific:
WAVEFORMATEX *wf;
BITMAPINFOHEADER *bih; // in format
// mpeg specific:
unsigned int gop_start; // frame number of this GOP start
size_t ipb[3]; // sizes of I/P/B frames
// muxer of that stream
struct muxer_t *muxer;
void *priv; // private stream specific data stored by the muxer
} muxer_stream_t;
typedef struct {
uint32_t id;
char *text;
} muxer_info_t;
typedef struct muxer_t{
// encoding:
MainAVIHeader avih;
unsigned int movi_start;
unsigned int movi_end;
unsigned int file_end; // for MPEG it's system timestamp in 1/90000 s
// index:
AVIINDEXENTRY *idx;
int idx_pos;
int idx_size;
// streams:
int num_videos; // for MPEG recalculations
unsigned int sysrate; // max rate in bytes/s
//int num_streams;
muxer_stream_t* def_v; // default video stream (for general headers)
muxer_stream_t* streams[MUXER_MAX_STREAMS];
void (*cont_write_chunk)(muxer_stream_t *,size_t,unsigned int);
void (*cont_write_header)(struct muxer_t *);
void (*cont_write_index)(struct muxer_t *);
muxer_stream_t* (*cont_new_stream)(struct muxer_t *,int);
FILE* file;
} muxer_t;
muxer_t *muxer_new_muxer(int type,FILE *);
#define muxer_new_stream(muxer,a) muxer->cont_new_stream(muxer,a)
#define muxer_write_chunk(a,b,c) a->muxer->cont_write_chunk(a,b,c)
#define muxer_write_header(muxer) muxer->cont_write_header(muxer)
#define muxer_write_index(muxer) muxer->cont_write_index(muxer)
void muxer_init_muxer_avi(muxer_t *);
void muxer_init_muxer_mpeg(muxer_t *);
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