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iOS Audio: Use hard-coded set of potential block sizes to avoid slow hardware queries

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reuk 2024-10-02 14:17:05 +01:00
parent 70c9c5bfdb
commit 7e73ed7c36
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GPG key ID: FCB43929F012EE5C
1 changed files with 27 additions and 19 deletions
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46
modules/juce_audio_devices/native/juce_Audio_ios.cpp
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@ -441,21 +441,29 @@ struct iOSAudioIODevice::Pimpl final : public AsyncUpdater
{
availableBufferSizes.clear();
auto newBufferSize = tryBufferSize (sampleRate, 64);
jassert (newBufferSize > 0);
const auto longestBufferSize = tryBufferSize (sampleRate, 4096);
while (newBufferSize <= longestBufferSize)
const auto [minBufSize, maxBufSize] = std::invoke ([this]
{
availableBufferSizes.add (newBufferSize);
newBufferSize *= 2;
}
constexpr auto suggestedMin = 64;
constexpr auto suggestedMax = 4096;
if (@available (ios 18, *))
return std::tuple (suggestedMin, suggestedMax);
const auto min = tryBufferSize (sampleRate, suggestedMin);
const auto max = tryBufferSize (sampleRate, suggestedMax);
bufferSize = tryBufferSize (sampleRate, bufferSize);
return std::tuple (min, max);
});
jassert (minBufSize > 0);
for (auto i = minBufSize; i <= maxBufSize; i *= 2)
availableBufferSizes.add (i);
// Sometimes the largest supported buffer size is not a power of 2
availableBufferSizes.addIfNotAlreadyThere (longestBufferSize);
bufferSize = tryBufferSize (sampleRate, bufferSize);
availableBufferSizes.addIfNotAlreadyThere (maxBufSize);
#if JUCE_IOS_AUDIO_LOGGING
{
@ -512,10 +520,6 @@ struct iOSAudioIODevice::Pimpl final : public AsyncUpdater
availableSampleRates.addIfNotAlreadyThere (highestRate);
// Restore the original values.
sampleRate = trySampleRate (sampleRate);
bufferSize = tryBufferSize (sampleRate, bufferSize);
AudioUnitAddPropertyListener (audioUnit,
kAudioUnitProperty_StreamFormat,
dispatchAudioUnitPropertyChange,
@ -1227,9 +1231,6 @@ struct iOSAudioIODevice::Pimpl final : public AsyncUpdater
{
const ScopedLock sl (callbackLock);
updateHardwareInfo();
setTargetSampleRateAndBufferSize();
if (isRunning)
{
if (audioUnit != nullptr)
@ -1241,6 +1242,13 @@ struct iOSAudioIODevice::Pimpl final : public AsyncUpdater
callback->audioDeviceStopped();
}
}
updateHardwareInfo();
setTargetSampleRateAndBufferSize();
if (isRunning)
{
channelData.reconfigure (requestedInputChannels, requestedOutputChannels);
createAudioUnit();