bool PlayStream::setPosition(unsigned samples)
{
#ifdef RPLAYSTREAM_SHOW_SLOTS
printf("setPosition(%d) -- Card: %d Stream: %d\n",samples,
card_number,stream_number);
#endif // RPLAYSTREAM_SHOW_SLOTS
if((samples<0)||(samples>getSampleLength())) {
return false;
}
if(playing&&((unsigned)samples!=(samples_skipped+samples_played))) {
restart_transport=true;
pause();
}
if(!playing) {
if(is_paused) {
is_paused=false;
repositioned=true;
}
HPICall(HPI_OutStreamReset(NULL,hpi_stream));
samples_played=0;
switch(getFormatTag()) {
case WAVE_FORMAT_PCM:
case WAVE_FORMAT_VORBIS:
samples_skipped=
(unsigned)((double)getBlockAlign()*
((double)samples/(double)getBlockAlign()));
seekWave((int)((double)samples_skipped*(double)getBlockAlign()),
SEEK_SET);
break;
case WAVE_FORMAT_MPEG:
samples_skipped=
(unsigned)((double)getBlockAlign()*
((double)samples/(double)getBlockAlign()));
seekWave((int)((double)(getAvgBytesPerSec())*
((double)(samples_skipped)/
((double)getSamplesPerSec()))),
SEEK_SET);
break;
}
emit position(samples);
}
if(restart_transport) {
play();
restart_transport=false;
}
return true;
}
// ----------------------------------------------------------------------------
int RiffWavReader::getSamples(void* buf, const size_t& count)
{
return getStream(buf, count * getBlockAlign());
}
