void SndBuffer::timeStretchWrite()
{
// data prediction helps keep the tempo adjustments more accurate.
// The timestretcher returns packets in belated "clump" form.
// Meaning that most of the time we'll get nothing back, and then
// suddenly we'll get several chunks back at once. Thus we use
// data prediction to make the timestretcher more responsive.
PredictDataWrite((int)(SndOutPacketSize / eTempo));
CvtPacketToFloat(sndTempBuffer);
pSoundTouch->putSamples((float *)sndTempBuffer, SndOutPacketSize);
int tempProgress;
while (tempProgress = pSoundTouch->receiveSamples((float *)sndTempBuffer, SndOutPacketSize),
tempProgress != 0) {
// Hint: It's assumed that pSoundTouch will return chunks of 128 bytes (it always does as
// long as the SSE optimizations are enabled), which means we can do our own SSE opts here.
CvtPacketToInt(sndTempBuffer, tempProgress);
_WriteSamples(sndTempBuffer, tempProgress);
}
#ifdef SPU2X_USE_OLD_STRETCHER
UpdateTempoChangeSoundTouch();
#else
UpdateTempoChangeSoundTouch2();
#endif
}
void SndBuffer::timeStretchWrite()
{
bool progress = false;
// data prediction helps keep the tempo adjustments more accurate.
// The timestretcher returns packets in belated "clump" form.
// Meaning that most of the time we'll get nothing back, and then
// suddenly we'll get several chunks back at once. Thus we use
// data prediction to make the timestretcher more responsive.
PredictDataWrite( (int)( SndOutPacketSize / eTempo ) );
CvtPacketToFloat( sndTempBuffer );
pSoundTouch->putSamples( (float*)sndTempBuffer, SndOutPacketSize );
int tempProgress;
while( tempProgress = pSoundTouch->receiveSamples( (float*)sndTempBuffer, SndOutPacketSize),
tempProgress != 0 )
{
// Hint: It's assumed that pSoundTouch will return chunks of 128 bytes (it always does as
// long as the SSE optimizations are enabled), which means we can do our own SSE opts here.
CvtPacketToInt( sndTempBuffer, tempProgress );
_WriteSamples( sndTempBuffer, tempProgress );
progress = true;
}
#ifdef SPU2X_USE_OLD_STRETCHER
UpdateTempoChangeSoundTouch();
#else
UpdateTempoChangeSoundTouch2();
#endif
if( MsgOverruns() )
{
if( progress )
{
if( ++ts_stats_logcounter > 150 )
{
ts_stats_logcounter = 0;
ConLog( " * SPU2 > Timestretch Stats > %d percent stretched. Total stretchblocks = %d.\n",
( ts_stats_stretchblocks * 100 ) / ( ts_stats_normalblocks + ts_stats_stretchblocks ),
ts_stats_stretchblocks);
ts_stats_normalblocks = 0;
ts_stats_stretchblocks = 0;
}
}
}
}