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signal connection check before emit of devices changed

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amer cerkic 2019-11-21 15:46:11 -08:00
parent 065614bae5
commit 4f009d884f
1 changed files with 13 additions and 9 deletions
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22
libraries/audio-client/src/AudioClient.cpp
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@ -159,16 +159,20 @@ void AudioClient::checkDevices() {
auto inputDevices = getAvailableDevices(QAudio::AudioInput, hmdInputName);
auto outputDevices = getAvailableDevices(QAudio::AudioOutput, hmdOutputName);
Lock lock(_deviceMutex);
if (inputDevices != _inputDevices) {
_inputDevices.swap(inputDevices);
emit devicesChanged(QAudio::AudioInput, _inputDevices);
}
static const QMetaMethod devicesChangedSig= QMetaMethod::fromSignal(&AudioClient::devicesChanged);
//only emit once the scripting interface has connecte to the signal
if (isSignalConnected(devicesChangedSig)) {
Lock lock(_deviceMutex);
if (inputDevices != _inputDevices) {
_inputDevices.swap(inputDevices);
emit devicesChanged(QAudio::AudioInput, _inputDevices);
}
if (outputDevices != _outputDevices) {
_outputDevices.swap(outputDevices);
emit devicesChanged(QAudio::AudioOutput, _outputDevices);
}
if (outputDevices != _outputDevices) {
_outputDevices.swap(outputDevices);
emit devicesChanged(QAudio::AudioOutput, _outputDevices);
}
}
}
HifiAudioDeviceInfo AudioClient::getActiveAudioDevice(QAudio::Mode mode) const {