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#define MAX_PACKS 4096
#define MAX_PACK_BYTES 0x800000
#define DEMUXER_TYPE_UNKNOWN 0
#define DEMUXER_TYPE_MPEG_ES 1
#define DEMUXER_TYPE_MPEG_PS 2
#define DEMUXER_TYPE_AVI 3
#define DEMUXER_TYPE_AVI_NI 4
#define DEMUXER_TYPE_AVI_NINI 5
#define DEMUXER_TYPE_ASF 6
#define DEMUXER_TIME_NONE 0
#define DEMUXER_TIME_PTS 1
#define DEMUXER_TIME_FILE 2
#define DEMUXER_TIME_BPS 3
typedef struct demux_packet_st {
int len;
float pts;
int pos; // pozicio indexben (AVI) ill. fileban (MPG)
unsigned char* buffer;
struct demux_packet_st* next;
} demux_packet_t;
typedef struct {
int buffer_pos; // current buffer position
int buffer_size; // current buffer size
unsigned char* buffer; // current buffer
float pts; // current buffer's pts
int pts_bytes; // number of bytes read after last pts stamp
int eof; // end of demuxed stream? (true if all buffer empty)
int pos; // position in the input stream (file)
int dpos; // position in the demuxed stream
//---------------
int packs; // number of packets in buffer
int bytes; // total bytes of packets in buffer
demux_packet_t *first; // read to current buffer from here
demux_packet_t *last; // append new packets from input stream to here
int id; // stream ID (for multiple audio/video streams)
int type; // stream type (currently used only for audio)
struct demuxer_st *demuxer; // parent demuxer structure (stream handler)
// ---- asf -----
demux_packet_t *asf_packet; // read asf fragments here
int asf_seq;
// ---- stream header ----
void* sh;
} demux_stream_t;
typedef struct demuxer_st {
stream_t *stream;
int synced; // stream synced (used by mpeg)
int filepos; // input stream current pos.
// int endpos; // input stream end pos. (return EOF fi filepos>endpos)
int type; // mpeg system stream, mpeg elementary s., avi raw, avi indexed
// int time_src;// time source (pts/file/bps)
unsigned int movi_start;
unsigned int movi_end;
//
demux_stream_t *audio;
demux_stream_t *video;
demux_stream_t *sub;
// index:
// AVIINDEXENTRY* idx;
void* idx;
int idx_size;
int idx_pos;
int idx_pos_a;
int idx_pos_v;
int idx_offset; // ennyit kell hozzaadni az index offset ertekekhez
// stream headers:
// sh_audio_t* a_streams[256];
// sh_video_t* v_streams[256];
void* a_streams[256];
void* v_streams[256];
char s_streams[32]; // dvd subtitles
} demuxer_t;
inline static demux_packet_t* new_demux_packet(int len){
demux_packet_t* dp=malloc(sizeof(demux_packet_t));
dp->len=len;
dp->buffer=malloc(len);
dp->next=NULL;
dp->pts=0;
dp->pos=0;
return dp;
}
inline static void free_demux_packet(demux_packet_t* dp){
free(dp->buffer);
free(dp);
}
demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id);
demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id);
void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp);
void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,int pos);
int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds);
int ds_fill_buffer(demux_stream_t *ds);
inline static int ds_tell(demux_stream_t *ds){
return (ds->dpos-ds->buffer_size)+ds->buffer_pos;
}
inline static int ds_tell_pts(demux_stream_t *ds){
return (ds->pts_bytes-ds->buffer_size)+ds->buffer_pos;
}
int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len);
int demux_read_data_pack(demux_stream_t *ds,unsigned char* mem,int len);
#if 1
#define demux_getc(ds) (\
(ds->buffer_pos<ds->buffer_size) ? ds->buffer[ds->buffer_pos++] \
:((!ds_fill_buffer(ds))? (-1) : ds->buffer[ds->buffer_pos++] ) )
#else
inline static int demux_getc(demux_stream_t *ds){
if(ds->buffer_pos>=ds->buffer_size){
if(!ds_fill_buffer(ds)){
// printf("DEMUX_GETC: EOF reached!\n");
return -1; // EOF
}
}
// printf("[%02X]",ds->buffer[ds->buffer_pos]);
return ds->buffer[ds->buffer_pos++];
}
#endif
void ds_free_packs(demux_stream_t *ds);
int ds_get_packet(demux_stream_t *ds,unsigned char **start);
int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start);
static inline int avi_stream_id(unsigned int id){
unsigned char *p=(unsigned char *)&id;
unsigned char a,b;
a=p[0]-'0'; b=p[1]-'0';
if(a>9 || b>9) return 100; // invalid ID
return a*10+b;
}
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