david/librubberband
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Remove the alternate pitch method. It isn't as reliable in avoiding artifacts and it's quite a bit of overhead to test.

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This commit is contained in:
Chris Cannam
2024-05-10 13:38:15 +01:00
parent 8ea77bb96d
commit bbbba44774
5 changed files with 20 additions and 85 deletions
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72
src/finer/R3LiveShifter.cpp
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@@ -45,7 +45,6 @@ R3LiveShifter::R3LiveShifter(Parameters parameters, Log log) :
m_useReadahead(false),
m_prevInhop(m_limits.maxInhopWithReadahead / 2),
m_prevOuthop(m_prevInhop),
m_expandThenContract(false),
m_firstProcess(true),
m_unityCount(0)
{
@@ -71,11 +70,6 @@ R3LiveShifter::initialise()
m_useReadahead = true;
}
if ((m_parameters.options & RubberBandLiveShifter::OptionPitchMethodAlternate)) {
m_log.log(1, "R3LiveShifter::R3LiveShifter: expand-then-contract enabled");
m_expandThenContract = true;
}
double maxClassifierFrequency = 16000.0;
if (maxClassifierFrequency > m_parameters.sampleRate/2) {
maxClassifierFrequency = m_parameters.sampleRate/2;
@@ -247,14 +241,8 @@ R3LiveShifter::measureResamplerDelay()
auto outbuf = inbuf;
double inRatio = 1.0;
if (m_expandThenContract) {
if (m_pitchScale < 1.0) {
inRatio = 1.0 / m_pitchScale;
}
} else {
if (m_pitchScale > 1.0) {
inRatio = 1.0 / m_pitchScale;
}
if (m_pitchScale > 1.0) {
inRatio = 1.0 / m_pitchScale;
}
int outcount = m_inResampler->resampleInterleaved
@@ -290,18 +278,10 @@ R3LiveShifter::getStartDelay() const
{
int fixed = getWindowSourceSize() / 2 + m_resamplerDelay * 2;
int variable = getWindowSourceSize() / 2;
if (m_expandThenContract) {
if (m_pitchScale < 1.0) {
return size_t(fixed + ceil(variable * m_pitchScale));
} else {
return size_t(fixed + ceil(variable / m_pitchScale));
}
if (m_pitchScale < 1.0) {
return size_t(fixed + ceil(variable / m_pitchScale));
} else {
if (m_pitchScale < 1.0) {
return size_t(fixed + ceil(variable / m_pitchScale));
} else {
return size_t(fixed + ceil(variable * m_pitchScale));
}
return size_t(fixed + ceil(variable * m_pitchScale));
}
}
@@ -353,13 +333,9 @@ R3LiveShifter::shift(const float *const *input, float *const *output)
int pad = 0;
if (m_firstProcess) {
if (m_expandThenContract) {
pad = getWindowSourceSize() / 2;
} else {
pad = getWindowSourceSize();
if (m_pitchScale > 1.0) {
pad = int(ceil(pad * m_pitchScale));
}
pad = getWindowSourceSize();
if (m_pitchScale > 1.0) {
pad = int(ceil(pad * m_pitchScale));
}
m_log.log(2, "R3LiveShifter::shift: extending input with pre-pad", incount, pad);
for (int c = 0; c < m_parameters.channels; ++c) {
@@ -371,14 +347,8 @@ R3LiveShifter::shift(const float *const *input, float *const *output)
double outRatio = 1.0;
if (m_expandThenContract) {
if (m_pitchScale > 1.0) {
outRatio = 1.0 / m_pitchScale;
}
} else {
if (m_pitchScale < 1.0) {
outRatio = 1.0 / m_pitchScale;
}
if (m_pitchScale < 1.0) {
outRatio = 1.0 / m_pitchScale;
}
int requiredInOutbuf = int(ceil(incount / outRatio));
@@ -440,15 +410,8 @@ R3LiveShifter::readIn(const float *const *input)
}
double inRatio = 1.0;
if (m_expandThenContract) {
if (m_pitchScale < 1.0) {
inRatio = 1.0 / m_pitchScale;
}
} else {
if (m_pitchScale > 1.0) {
inRatio = 1.0 / m_pitchScale;
}
if (m_pitchScale > 1.0) {
inRatio = 1.0 / m_pitchScale;
}
m_log.log(2, "R3LiveShifter::readIn: ratio", inRatio);
@@ -639,15 +602,8 @@ int
R3LiveShifter::readOut(float *const *output, int outcount)
{
double outRatio = 1.0;
if (m_expandThenContract) {
if (m_pitchScale > 1.0) {
outRatio = 1.0 / m_pitchScale;
}
} else {
if (m_pitchScale < 1.0) {
outRatio = 1.0 / m_pitchScale;
}
if (m_pitchScale < 1.0) {
outRatio = 1.0 / m_pitchScale;
}
m_log.log(2, "R3LiveShifter::readOut: outcount and ratio", outcount, outRatio);