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pixel column counts and sample window sizes use unsigned types

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This commit is contained in:
Paul Licameli
2016-09-08 14:28:34 -04:00
parent b910bf63da
commit ed21545c80
36 changed files with 1031 additions and 1010 deletions
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33
src/effects/ChangePitch.cpp
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@@ -406,44 +406,41 @@ void EffectChangePitch::DeduceFrequencies()
// Aim for around 2048 samples at 44.1 kHz (good down to about 100 Hz).
// To detect single notes, analysis period should be about 0.2 seconds.
// windowSize must be a power of 2.
int windowSize = wxRound(pow(2.0, floor((log(rate / 20.0)/log(2.0)) + 0.5)));
// windowSize < 256 too inaccurate
windowSize = (windowSize > 256)? windowSize : 256;
const size_t windowSize =
// windowSize < 256 too inaccurate
std::max(256, wxRound(pow(2.0, floor((log(rate / 20.0)/log(2.0)) + 0.5))));
// we want about 0.2 seconds to catch the first note.
// number of windows rounded to nearest integer >= 1.
int numWindows = wxRound((double)(rate / (5.0f * windowSize)));
numWindows = (numWindows > 0)? numWindows : 1;
const unsigned numWindows =
std::max(1, wxRound((double)(rate / (5.0f * windowSize))));
double trackStart = track->GetStartTime();
double t0 = mT0 < trackStart? trackStart: mT0;
auto start = track->TimeToLongSamples(t0);
int analyzeSize = windowSize * numWindows;
auto analyzeSize = windowSize * numWindows;
float * buffer;
buffer = new float[analyzeSize];
float * freq;
freq = new float[windowSize/2];
freq = new float[windowSize / 2];
float * freqa;
freqa = new float[windowSize/2];
freqa = new float[windowSize / 2];
int i, j, argmax;
int lag;
for(j=0; j<windowSize/2; j++)
for(size_t j = 0; j < windowSize / 2; j++)
freqa[j] = 0;
track->Get((samplePtr) buffer, floatSample, start, analyzeSize);
for(i=0; i<numWindows; i++) {
ComputeSpectrum(buffer+i*windowSize, windowSize,
for(unsigned i = 0; i < numWindows; i++) {
ComputeSpectrum(buffer + i * windowSize, windowSize,
windowSize, rate, freq, true);
for(j=0; j<windowSize/2; j++)
for(size_t j = 0; j < windowSize / 2; j++)
freqa[j] += freq[j];
}
argmax=0;
for(j=1; j<windowSize/2; j++)
size_t argmax = 0;
for(size_t j = 1; j < windowSize / 2; j++)
if (freqa[j] > freqa[argmax])
argmax = j;
@@ -451,7 +448,7 @@ void EffectChangePitch::DeduceFrequencies()
delete [] freqa;
delete [] buffer;
lag = (windowSize/2 - 1) - argmax;
auto lag = (windowSize / 2 - 1) - argmax;
m_dStartFrequency = rate / lag;
}