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//=================== DEMUXER v2.5 =========================
#include <stdio.h>
#include <stdlib.h>
extern int verbose; // defined in mplayer.c
#include "stream.h"
#include "demuxer.h"
demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id){
demux_stream_t* ds=malloc(sizeof(demux_stream_t));
ds->buffer_pos=ds->buffer_size=0;
ds->buffer=NULL;
ds->pts=0;
ds->pts_bytes=0;
ds->eof=0;
ds->pos=0;
ds->dpos=0;
ds->pack_no=0;
//---------------
ds->packs=0;
ds->bytes=0;
ds->first=ds->last=NULL;
ds->id=id;
ds->type=-1;
ds->demuxer=demuxer;
//----------------
ds->asf_seq=-1;
ds->asf_packet=NULL;
//----------------
ds->sh=NULL;
return ds;
}
demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id){
demuxer_t *d=malloc(sizeof(demuxer_t));
memset(d,0,sizeof(demuxer_t));
d->stream=stream;
d->movi_start=stream->start_pos;
d->movi_end=stream->end_pos;
d->synced=0;
d->filepos=0;
d->audio=new_demuxer_stream(d,a_id);
d->video=new_demuxer_stream(d,v_id);
d->sub=new_demuxer_stream(d,s_id);
d->type=type;
return d;
}
void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp){
// demux_packet_t* dp=new_demux_packet(len);
// stream_read(stream,dp->buffer,len);
// dp->pts=pts; //(float)pts/90000.0f;
// dp->pos=pos;
// append packet to DS stream:
++ds->packs;
ds->bytes+=dp->len;
if(ds->last){
// next packet in stream
ds->last->next=dp;
ds->last=dp;
} else {
// first packet in stream
ds->first=ds->last=dp;
}
if(verbose>=2)
printf("DEMUX: Append packet to %s, len=%d pts=%5.3f pos=%d [packs: A=%d V=%d]\n",
(ds==ds->demuxer->audio)?"d_audio":"d_video",
dp->len,dp->pts,dp->pos,ds->demuxer->audio->packs,ds->demuxer->video->packs);
}
void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,int pos,int flags){
demux_packet_t* dp=new_demux_packet(len);
stream_read(stream,dp->buffer,len);
dp->pts=pts; //(float)pts/90000.0f;
dp->pos=pos;
dp->flags=flags;
// append packet to DS stream:
ds_add_packet(ds,dp);
}
// return value:
// 0 = EOF or no stream found or invalid type
// 1 = successfully read a packet
int demux_mpg_es_fill_buffer(demuxer_t *demux);
int demux_mpg_fill_buffer(demuxer_t *demux);
int demux_avi_fill_buffer(demuxer_t *demux);
int demux_avi_fill_buffer_ni(demuxer_t *demux,demux_stream_t *ds);
int demux_avi_fill_buffer_nini(demuxer_t *demux,demux_stream_t *ds);
int demux_asf_fill_buffer(demuxer_t *demux);
int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds){
// Note: parameter 'ds' can be NULL!
switch(demux->type){
case DEMUXER_TYPE_MPEG_ES: return demux_mpg_es_fill_buffer(demux);
case DEMUXER_TYPE_MPEG_PS: return demux_mpg_fill_buffer(demux);
case DEMUXER_TYPE_AVI: return demux_avi_fill_buffer(demux);
case DEMUXER_TYPE_AVI_NI: return demux_avi_fill_buffer_ni(demux,ds);
case DEMUXER_TYPE_AVI_NINI: return demux_avi_fill_buffer_nini(demux,ds);
case DEMUXER_TYPE_ASF: return demux_asf_fill_buffer(demux);
}
return 0;
}
// return value:
// 0 = EOF
// 1 = succesfull
int ds_fill_buffer(demux_stream_t *ds){
demuxer_t *demux=ds->demuxer;
if(ds->buffer) free(ds->buffer);
if(verbose>2){
if(ds==demux->audio) printf("ds_fill_buffer(d_audio) called\n");else
if(ds==demux->video) printf("ds_fill_buffer(d_video) called\n");else
printf("ds_fill_buffer(unknown 0x%X) called\n",(unsigned int)ds);
}
while(1){
if(ds->packs){
demux_packet_t *p=ds->first;
// copy useful data:
ds->buffer=p->buffer;
ds->buffer_pos=0;
ds->buffer_size=p->len;
ds->pos=p->pos;
ds->dpos+=p->len; // !!!
++ds->pack_no;
if(p->pts){
ds->pts=p->pts;
ds->pts_bytes=0;
}
ds->pts_bytes+=p->len; // !!!
ds->flags=p->flags;
// free packet:
ds->bytes-=p->len;
ds->first=p->next;
if(!ds->first) ds->last=NULL;
free(p);
--ds->packs;
return 1; //ds->buffer_size;
}
if(demux->audio->packs>=MAX_PACKS || demux->audio->bytes>=MAX_PACK_BYTES){
printf("\nDEMUXER: Too many (%d in %d bytes) audio packets in the buffer!\n",demux->audio->packs,demux->audio->bytes);
printf("(maybe you play a non-interleaved stream/file or audio codec failed)\n");
break;
}
if(demux->video->packs>=MAX_PACKS || demux->video->bytes>=MAX_PACK_BYTES){
printf("\nDEMUXER: Too many (%d in %d bytes) video packets in the buffer!\n",demux->video->packs,demux->video->bytes);
printf("(maybe you play a non-interleaved stream/file or video codec failed)\n");
break;
}
if(!demux_fill_buffer(demux,ds)) break; // EOF
}
ds->buffer_pos=ds->buffer_size=0;
ds->buffer=NULL;
if(verbose) printf("ds_fill_buffer: EOF reached (stream: %s) \n",ds==demux->audio?"audio":"video");
ds->eof=1;
return 0;
}
int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len){
int x;
int bytes=0;
while(len>0){
x=ds->buffer_size-ds->buffer_pos;
if(x==0){
if(!ds_fill_buffer(ds)) return bytes;
} else {
if(x>len) x=len;
if(mem) memcpy(mem+bytes,&ds->buffer[ds->buffer_pos],x);
bytes+=x;len-=x;ds->buffer_pos+=x;
}
}
return bytes;
}
int demux_read_data_pack(demux_stream_t *ds,unsigned char* mem,int len){
int x;
int bytes=0;
while(len>0){
x=ds->buffer_size-ds->buffer_pos;
if(x==0){
if(!ds_fill_buffer(ds)) return bytes;
} else {
if(x>len) x=len;
if(mem) memcpy(mem+bytes,&ds->buffer[ds->buffer_pos],x);
bytes+=x;len-=x;ds->buffer_pos+=x;
return bytes; // stop at end of package! (for correct timestamping)
}
}
return bytes;
}
void ds_free_packs(demux_stream_t *ds){
demux_packet_t *dp=ds->first;
while(dp){
demux_packet_t *dn=dp->next;
free(dp->buffer);
free(dp);
dp=dn;
}
if(ds->asf_packet){
// free unfinished .asf fragments:
free(ds->asf_packet->buffer);
free(ds->asf_packet);
ds->asf_packet=NULL;
}
ds->first=ds->last=NULL;
ds->packs=0; // !!!!!
ds->bytes=0;
if(ds->buffer) free(ds->buffer);
ds->buffer=NULL;
ds->buffer_pos=ds->buffer_size;
ds->pts=0; ds->pts_bytes=0;
}
int ds_get_packet(demux_stream_t *ds,unsigned char **start){
while(1){
int len;
if(ds->buffer_pos>=ds->buffer_size){
if(!ds_fill_buffer(ds)){
// EOF
*start = NULL;
return -1;
}
}
len=ds->buffer_size-ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos+=len;
return len;
}
}
int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start){
while(1){
int len;
if(ds->buffer_pos>=ds->buffer_size){
*start = NULL;
if(!ds->packs) return -1; // no sub
if(!ds_fill_buffer(ds)) return -1; // EOF
}
len=ds->buffer_size-ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos+=len;
return len;
}
}
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