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Use game category for audio output to reduce audio latency

pull/53/head
michal.szwaj 2018-03-19 16:14:09 +01:00
parent 1a30e600e2
commit 339f0075c8
1 changed files with 5 additions and 7 deletions
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12
src/autoapp/Projection/AudioOutput.cpp
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@ -52,8 +52,9 @@ void AudioOutput::createAudioOutput()
OPENAUTO_LOG(debug) << "[AudioOutput] create."; OPENAUTO_LOG(debug) << "[AudioOutput] create.";
audioOutput_ = std::make_unique<QAudioOutput>(QAudioDeviceInfo::defaultOutputDevice(), audioFormat_); audioOutput_ = std::make_unique<QAudioOutput>(QAudioDeviceInfo::defaultOutputDevice(), audioFormat_);
// Default volume level (max) produces crackles // Setting this category switching to the low latency mode
audioOutput_->setVolume(static_cast<qreal>(0.90)); // See: http://code.qt.io/cgit/qt/qtmultimedia.git/tree/src/plugins/pulseaudio/qaudiooutput_pulse.cpp?h=5.7#n58
audioOutput_->setCategory("game");
} }
bool AudioOutput::open() bool AudioOutput::open()
@ -103,15 +104,12 @@ void AudioOutput::onStartPlayback()
audioOutput_->start(&audioBuffer_); audioOutput_->start(&audioBuffer_);
playbackStarted_ = true; playbackStarted_ = true;
} }
else
{
audioOutput_->resume();
}
} }
void AudioOutput::onSuspendPlayback() void AudioOutput::onSuspendPlayback()
{ {
audioOutput_->suspend(); // QAudioOutput is in pull mode so suspending/resuming are not needed.
// Keep this interface for any further purposes
} }
void AudioOutput::onStopPlayback() void AudioOutput::onStopPlayback()