int bg_avdec_read_video(void * priv,
gavl_video_frame_t * frame,
int stream)
{
avdec_priv * avdec = priv;
return bgav_read_video(avdec->dec, frame, stream);
}
void *the_videofifo_filler( void * xp) {
ReadMedia *rm = (ReadMedia *)xp;
int ret = 0;
int first = true;
int doaudio = rm->getAudioStreamCount();
int64_t seekto =SEEK_NOTHING;
int can_seek = bgav_can_seek ( rm->getFile() );
int can_seek_sample = bgav_can_seek_sample ( rm->getFile() );
int timescale = rm->getVideoTimescale();
while (!rm->quitAVThreads() ) {
while ( rm->getVideoFifo() !=NULL && rm->getVideoFifo()->FreeSpace() && !rm->getVEOF() ) {
if (rm->quitAVThreads() ) pthread_exit(NULL);//return NULL;
rm->lockAV();
// check to see if we need to seek
// if this is set, we already know we can seek on this file
// and don't need to check with bgav_can_seek
if (can_seek) {
seekto = rm->frameSeek();
if ( seekto >= 0 ) {
if (doaudio && rm->getAudioFifo() ) rm->getAudioFifo()->Flush();
rm->getVideoFifo()->Flush();
bgav_seek_scaled(rm->getFile(), &seekto, timescale);
} else if (seekto == SEEK_REWIND && !doaudio) {
// rewind is a special case for Video.
rm->getVideoFifo()->Flush();
seekto =0;
bgav_seek_scaled(rm->getFile(), &seekto, timescale);
}
}
ret = bgav_read_video(rm->getFile(), rm->getVideoFrame(), 0 );
if ( !ret ) {
// only loop from video if there is no audio
// audio controls loop timing
if ( rm->getLoop() ){
if ( can_seek ) {
if (doaudio && can_seek_sample) {
// seek on video stream only if we have audio
// audio and video seeking are separate in sample accurate
// seeking. If no sample accurate seeking, then let audio
// handle seeking
bgav_seek_video(rm->getFile(), 0,0);
} else if (!doaudio) {
// if we don't have audio...just seek to 0
seekto=0;
bgav_seek_scaled(rm->getFile(), &seekto, timescale);
}
} else { // if (can_seek)
printf ("We want to loop video, but we cannot seek on this video stream,setting VEOF\n");
rm->setVEOF(true);
}
} else {
rm->setVEOF(true);
}
rm->unlockAV();
break;
}
rm->unlockAV();
if( !rm->getVideoFifo()->Append( rm->getVideoFrame() ))
printf("problem with appending VideoFrame\n");
}
// on the first time 'round we will call the open callback
// if there is no video in the file, the audio will handle it.
if (first) {
rm->setState( STATE_READY );
rm->callOpenCallback();
first = false;
}
if (rm->quitAVThreads() ) pthread_exit(NULL); //return NULL;
rm->waitV();
}
pthread_exit(NULL); //return NULL;
}
