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Attempt audio device format with native sample rate and channels forced to 2/1 before failing

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This commit is contained in:
Ken Cooke 2019-08-05 12:14:45 -07:00
parent 7322ad78f5
commit 86adc6099b
1 changed files with 19 additions and 8 deletions
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27
libraries/audio-client/src/AudioClient.cpp
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@ -597,11 +597,17 @@ bool AudioClient::getNamedAudioDeviceForModeExists(QAudio::Mode mode, const QStr
// attempt to use the native sample rate and channel count // attempt to use the native sample rate and channel count
bool nativeFormatForAudioDevice(const QAudioDeviceInfo& audioDevice, bool nativeFormatForAudioDevice(const QAudioDeviceInfo& audioDevice, QAudioFormat& audioFormat) {
QAudioFormat& audioFormat) {
audioFormat = audioDevice.preferredFormat(); audioFormat = audioDevice.preferredFormat();
// converting to/from this rate must produce an integral number of samples
if ((audioFormat.sampleRate() <= 0) ||
(audioFormat.sampleRate() * AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL % AudioConstants::SAMPLE_RATE != 0)) {
qCWarning(audioclient) << "The native sample rate [" << audioFormat.sampleRate() << "] is not supported.";
return false;
}
audioFormat.setCodec("audio/pcm"); audioFormat.setCodec("audio/pcm");
audioFormat.setSampleSize(16); audioFormat.setSampleSize(16);
audioFormat.setSampleType(QAudioFormat::SignedInt); audioFormat.setSampleType(QAudioFormat::SignedInt);
@ -609,12 +615,17 @@ bool nativeFormatForAudioDevice(const QAudioDeviceInfo& audioDevice,
if (!audioDevice.isFormatSupported(audioFormat)) { if (!audioDevice.isFormatSupported(audioFormat)) {
qCWarning(audioclient) << "The native format is" << audioFormat << "but isFormatSupported() failed."; qCWarning(audioclient) << "The native format is" << audioFormat << "but isFormatSupported() failed.";
return false;
} // attempt the native sample rate, with channels forced to 2
// converting to/from this rate must produce an integral number of samples audioFormat.setChannelCount(2);
if (audioFormat.sampleRate() * AudioConstants::NETWORK_FRAME_SAMPLES_PER_CHANNEL % AudioConstants::SAMPLE_RATE != 0) { if (!audioDevice.isFormatSupported(audioFormat)) {
qCWarning(audioclient) << "The native sample rate [" << audioFormat.sampleRate() << "] is not supported.";
return false; // attempt the native sample rate, with channels forced to 1
audioFormat.setChannelCount(1);
if (!audioDevice.isFormatSupported(audioFormat)) {
return false;
}
}
} }
return true; return true;
} }