QAudioFormat QAudioDeviceInfoInternal::nearestFormat(const QAudioFormat& format) const
{
if(testSettings(format))
return format;
else
return preferredFormat();
}
QAudioFormat QAudioDeviceInfo::nearestFormat(const QAudioFormat &settings) const
{
if (isFormatSupported(settings))
return settings;
QAudioFormat nearest = settings;
nearest.setCodec(QLatin1String("audio/pcm"));
if (nearest.sampleType() == QAudioFormat::Unknown) {
QAudioFormat preferred = preferredFormat();
nearest.setSampleType(preferred.sampleType());
}
QMap<int,int> testFrequencies;
QList<int> frequenciesAvailable = supportedFrequencies();
QMap<int,int> testSampleSizes;
QList<int> sampleSizesAvailable = supportedSampleSizes();
// Get sorted sampleSizes (equal to and ascending values only)
if (sampleSizesAvailable.contains(settings.sampleSize()))
testSampleSizes.insert(0,settings.sampleSize());
sampleSizesAvailable.removeAll(settings.sampleSize());
foreach (int size, sampleSizesAvailable) {
int larger = (size > settings.sampleSize()) ? size : settings.sampleSize();
int smaller = (size > settings.sampleSize()) ? settings.sampleSize() : size;
if (size >= settings.sampleSize()) {
int diff = larger - smaller;
testSampleSizes.insert(diff, size);
}
}
QAudioFormat QAudioDeviceInfoInternal::nearestFormat(const QAudioFormat &format) const
{
if (isFormatSupported(format))
return format;
else
return preferredFormat();
}
