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coreaudio: Add a note about why this uses 3 buffers instead of 2.

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Ryan C. Gordon 2025-01-20 23:29:53 -05:00
parent c0a9d220b9
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src/audio/coreaudio/SDL_coreaudio.m
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@ -817,6 +817,10 @@ static bool PrepareAudioQueue(SDL_AudioDevice *device)
}
#endif
// we use THREE audio buffers by default, unlike most things that would
// choose two alternating buffers, because it helps with issues on
// Bluetooth headsets when recording and playing at the same time.
// See conversation in #8192 for details.
int numAudioBuffers = 3;
const double msecs = (device->sample_frames / ((double)device->spec.freq)) * 1000.0;
if (msecs < MINIMUM_AUDIO_BUFFER_TIME_MS) { // use more buffers if we have a VERY small sample set.