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Settle on a single set of params that seems to work ok in tests

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This commit is contained in:
Chris Cannam
2020-10-22 15:55:48 +01:00
parent 75f9af1f9b
commit e3e5fe7ae3
1 changed files with 5 additions and 27 deletions
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32
src/dsp/Resampler.cpp
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@@ -143,7 +143,8 @@ protected:
void setBufSize(int); void setBufSize(int);
}; };
D_IPP::D_IPP(Resampler::Quality quality, int channels, double initialSampleRate, D_IPP::D_IPP(Resampler::Quality /* quality */,
int channels, double initialSampleRate,
int maxBufferSize, int debugLevel) : int maxBufferSize, int debugLevel) :
m_state(0), m_state(0),
m_initialSampleRate(initialSampleRate), m_initialSampleRate(initialSampleRate),
@@ -151,36 +152,13 @@ D_IPP::D_IPP(Resampler::Quality quality, int channels, double initialSampleRate,
m_debugLevel(debugLevel) m_debugLevel(debugLevel)
{ {
if (m_debugLevel > 0) { if (m_debugLevel > 0) {
cerr << "Resampler::Resampler: using IPP implementation" cerr << "Resampler::Resampler: using IPP implementation" << endl;
<< endl;
} }
int nStep = 16; int nStep = 16;
IppHintAlgorithm hint = ippAlgHintFast; IppHintAlgorithm hint = ippAlgHintFast;
m_window = 48;
//!!! todo: make use of initialSampleRate to calculate parameters nStep = 80;
switch (quality) {
case Resampler::Best:
m_window = 64;
nStep = 80;
hint = ippAlgHintAccurate;
break;
case Resampler::FastestTolerable:
nStep = 16;
m_window = 16;
hint = ippAlgHintFast;
break;
case Resampler::Fastest:
m_window = 24;
nStep = 64;
hint = ippAlgHintFast;
break;
}
m_factor = 8; // initial upper bound on m_ratio, may be amended later m_factor = 8; // initial upper bound on m_ratio, may be amended later
// This is largely based on the IPP docs and examples. Adapted // This is largely based on the IPP docs and examples. Adapted