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Fix Steam Link audio latency cap

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This commit is contained in:
Cameron Gutman 2019-05-20 23:57:27 -07:00
commit 2682829bd3
3 changed files with 12 additions and 6 deletions
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7
app/streaming/audio/renderers/slaud.cpp
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@ -19,6 +19,10 @@ bool SLAudioRenderer::prepareForPlayback(const OPUS_MULTISTREAM_CONFIGURATION* o
return false;
}
// This number is pretty conservative (especially for surround), but
// it's hard to avoid since we get crushed by CPU limitations.
m_MaxQueuedAudioMs = 40 * opusConfig->channelCount / 2;
m_FrameDuration = opusConfig->samplesPerFrame / 48;
m_AudioBufferSize = opusConfig->samplesPerFrame * sizeof(short) * opusConfig->channelCount;
m_AudioStream = SLAudio_CreateStream(m_AudioContext,
@ -73,8 +77,7 @@ bool SLAudioRenderer::submitAudio(int bytesWritten)
return true;
}
// Only allow up to 40 ms of queued audio
if (LiGetPendingAudioFrames() * m_FrameDuration < 40) {
if (LiGetPendingAudioFrames() * m_FrameDuration < m_MaxQueuedAudioMs) {
SLAudio_SubmitFrame(m_AudioStream);
m_AudioBuffer = nullptr;
}