void AudioPrefetch::prefetch(bool doSeek)
{
if (writePos == ~0U) {
printf("AudioPrefetch::prefetch: invalid write position\n");
return;
}
if (MusEGlobal::song->loop() && !MusEGlobal::audio->bounce() && !MusEGlobal::extSyncFlag.value()) {
const Pos& loop = MusEGlobal::song->rPos();
unsigned n = loop.frame() - writePos;
if (n < MusEGlobal::segmentSize) {
unsigned lpos = MusEGlobal::song->lPos().frame();
// adjust loop start so we get exact loop len
if (n > lpos)
n = 0;
writePos = lpos - n;
}
}
WaveTrackList* tl = MusEGlobal::song->waves();
for (iWaveTrack it = tl->begin(); it != tl->end(); ++it) {
WaveTrack* track = *it;
// Save time. Don't bother if track is off. Track On/Off not designed for rapid repeated response (but mute is). (p3.3.29)
if(track->off())
continue;
int ch = track->channels();
float* bp[ch];
if (track->prefetchFifo()->getWriteBuffer(ch, MusEGlobal::segmentSize, bp, writePos))
continue;
track->fetchData(writePos, MusEGlobal::segmentSize, bp, doSeek);
}
writePos += MusEGlobal::segmentSize;
}
void AudioPrefetch::prefetch(bool doSeek)
{
if (writePos == ~0U)
{
printf("AudioPrefetch::prefetch: invalid write position\n");
return;
}
if (song->loop() && !audio->bounce() && !extSyncFlag.value())
{
const Pos& loop = song->rPos();
unsigned n = loop.frame() - writePos;
if (n < segmentSize)
{
unsigned lpos = song->lPos().frame();
// adjust loop start so we get exact loop len
if (n > lpos)
n = 0;
// printf("prefetch seek %d\n", writePos);
writePos = lpos - n;
}
}
WaveTrackList* tl = song->waves();
for (iWaveTrack it = tl->begin(); it != tl->end(); ++it)
{
WaveTrack* track = *it;
// p3.3.29
// Save time. Don't bother if track is off. Track On/Off not designed for rapid repeated response (but mute is).
if (track->off())
continue;
int ch = track->channels();
float* bp[ch];
// printf("prefetch %d\n", writePos);
if (track->prefetchFifo()->getWriteBuffer(ch, segmentSize, bp, writePos))
{
// printf("AudioPrefetch::prefetch No write buffer!\n"); // p3.3.46 Was getting this...
continue;
}
//track->fetchData(writePos, segmentSize, bp);
track->fetchData(writePos, segmentSize, bp, doSeek);
// p3.3.41
//fprintf(stderr, "AudioPrefetch::prefetch data: segmentSize:%ld %e %e %e %e\n", segmentSize, bp[0][0], bp[0][1], bp[0][2], bp[0][3]);
}
writePos += segmentSize;
}