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Android: Fixed large buffer sizes on some devices

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Requesting a callback when opening an Oboe device is required on some devices to get a FAST stream, so pass a dummy callback object to the temporary stream used when querying the device buffer size in order to get the best available.
This commit is contained in:
ed 2020-10-23 12:16:55 +01:00
parent 32b9b1e9db
commit 99bce8a3a8
1 changed files with 10 additions and 1 deletions
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11
modules/juce_audio_devices/native/juce_android_Oboe.cpp
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@ -383,6 +383,15 @@ private:
{
auto bufferSizeHint = AndroidHighPerformanceAudioHelpers::getNativeBufferSizeHint();
// providing a callback is required on some devices to get a FAST track, so we pass an
// empty one to the temp stream to get the best available buffer size
struct DummyCallback : public oboe::AudioStreamCallback
{
oboe::DataCallbackResult onAudioReady (oboe::AudioStream*, void*, int32_t) override { return oboe::DataCallbackResult::Stop; }
};
DummyCallback callback;
// NB: Exclusive mode could be rejected if a device is already opened in that mode, so to get
// reliable results, only use this function when a device is closed.
// We initially try to open a stream with a buffer size returned from
@ -395,7 +404,7 @@ private:
getAndroidSDKVersion() >= 21 ? oboe::AudioFormat::Float : oboe::AudioFormat::I16,
(int) AndroidHighPerformanceAudioHelpers::getNativeSampleRate(),
bufferSizeHint,
nullptr);
&callback);
if (auto* nativeStream = tempStream.getNativeStream())
return nativeStream->getFramesPerBurst();