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Safer loop resolution for oddly-configured SAMPLESTARTs

This commit is contained in:
Jack Andersen 2016-05-16 15:25:50 -10:00
parent 343c674c9b
commit 970b7775ee
1 changed files with 17 additions and 2 deletions
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19
lib/Voice.cpp
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@ -601,11 +601,26 @@ void Voice::startSample(int16_t sampId, int32_t offset)
m_curPitch = m_curSample->first.m_pitch;
setPitchWheel(m_curPitchWheel);
m_backendVoice->resetSampleRate(m_curSample->first.m_sampleRate);
int32_t numSamples = m_curSample->first.m_numSamples & 0xffffff;
if (offset)
{
if (m_curSample->first.m_loopLengthSamples)
{
if (offset <= m_curSample->first.m_loopStartSample)
offset = clamp(0, offset, numSamples);
else
offset = ((offset - m_curSample->first.m_loopStartSample) %
m_curSample->first.m_loopLengthSamples) +
m_curSample->first.m_loopStartSample;
}
else
offset = clamp(0, offset, numSamples);
}
m_curSamplePos = offset;
m_curSampleData = m_audioGroup.getSampleData(m_curSample->first.m_sampleOff);
m_prev1 = 0;
m_prev2 = 0;
uint32_t numSamples = m_curSample->first.m_numSamples & 0xffffff;
m_curFormat = SampleFormat(m_curSample->first.m_numSamples >> 24);
m_lastSamplePos = m_curSample->first.m_loopLengthSamples ?
(m_curSample->first.m_loopStartSample + m_curSample->first.m_loopLengthSamples) : numSamples;
@ -619,7 +634,7 @@ void Voice::startSample(int16_t sampId, int32_t offset)
_checkSamplePos();
/* Seek DSPADPCM state if needed */
if (m_curSamplePos && m_curFormat == SampleFormat::DSP)
if (m_curSample && m_curSamplePos && m_curFormat == SampleFormat::DSP)
{
uint32_t block = m_curSamplePos / 14;
uint32_t rem = m_curSamplePos % 14;