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Make audio output more realtime

pull/53/head
michal.szwaj 2018-03-25 04:42:32 +02:00
parent ef53aa4399
commit 488d70c201
1 changed files with 8 additions and 12 deletions
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20
src/autoapp/Projection/RtAudioOutput.cpp
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@ -33,15 +33,9 @@ RtAudioOutput::RtAudioOutput(uint32_t channelCount, uint32_t sampleSize, uint32_
, sampleSize_(sampleSize)
, sampleRate_(sampleRate)
{
try
{
dac_ = std::make_unique<RtAudio>(RtAudio::LINUX_PULSE);
}
catch(...)
{
// fallback
dac_ = std::make_unique<RtAudio>();
}
std::vector<RtAudio::Api> apis;
RtAudio::getCompiledApi(apis);
dac_ = std::find(apis.begin(), apis.end(), RtAudio::LINUX_PULSE) == apis.end() ? std::make_unique<RtAudio>() : std::make_unique<RtAudio>(RtAudio::LINUX_PULSE);
}
bool RtAudioOutput::open()
@ -57,9 +51,11 @@ bool RtAudioOutput::open()
try
{
uint32_t bufferFrames = 128;
dac_->openStream(&parameters, nullptr, RTAUDIO_SINT16, sampleRate_, &bufferFrames, &RtAudioOutput::audioBufferReadHandler, static_cast<void*>(this));
RtAudio::StreamOptions streamOptions;
streamOptions.numberOfBuffers = 1;
streamOptions.flags = RTAUDIO_MINIMIZE_LATENCY | RTAUDIO_SCHEDULE_REALTIME;
uint32_t bufferFrames = 64;
dac_->openStream(&parameters, nullptr, RTAUDIO_SINT16, sampleRate_, &bufferFrames, &RtAudioOutput::audioBufferReadHandler, static_cast<void*>(this), &streamOptions);
return audioBuffer_.open(QIODevice::ReadWrite);
}
catch(const RtAudioError& e)