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fix for a couple of resampling edge cases

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This commit is contained in:
Stephen Birarda 2016-01-27 14:31:47 -08:00
parent 3cdd88e06c
commit dc716461e3
1 changed files with 15 additions and 3 deletions
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18
libraries/audio/src/Sound.cpp
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@ -98,11 +98,23 @@ void Sound::downSample(const QByteArray& rawAudioByteArray) {
int numSourceSamples = rawAudioByteArray.size() / sizeof(AudioConstants::AudioSample);
int numDestinationBytes = rawAudioByteArray.size() / sizeof(AudioConstants::AudioSample);
if (_isStereo && numSourceSamples % 2 != 0) {
numDestinationBytes += sizeof(AudioConstants::AudioSample);
if (_isStereo && numSourceSamples % 2 != 0){
// in the unlikely case that we have stereo audio but we seem to be missing a sample
// (the sample for one channel is missing in a set of interleaved samples)
// then drop the odd sample
--numSourceSamples;
}
int numDestinationSamples = numSourceSamples / 2.0f;
if (_isStereo && numDestinationSamples % 2 != 0) {
// if this is stereo we need to make sure we produce stereo output
// which means we should have an even number of output samples
numDestinationSamples += 1;
}
int numDestinationBytes = numDestinationSamples * sizeof(AudioConstants::AudioSample);
_byteArray.resize(numDestinationBytes);
int16_t* sourceSamples = (int16_t*) rawAudioByteArray.data();