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Audio: Fixed buffer underruns when using 60.0 FPS mode

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This commit is contained in:
Sour 2020-02-15 14:44:36 -05:00
parent 6ea8d6c815
commit 3e947a8ba0
2 changed files with 15 additions and 3 deletions
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17
Core/SoundResampler.cpp
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@ -75,11 +75,22 @@ double SoundResampler::GetTargetRateAdjustment()
void SoundResampler::UpdateTargetSampleRate(uint32_t sampleRate)
{
uint32_t spcSampleRate = SoundResampler::SpcSampleRate;
if(_console->GetSettings()->GetVideoConfig().IntegerFpsMode) {
//Adjust sample rate when running at 60.0 fps instead of 60.1
switch(_console->GetRegion()) {
default:
case ConsoleRegion::Ntsc: spcSampleRate = (uint32_t)(SoundResampler::SpcSampleRate * (60.0 / 60.0988118623484)); break;
case ConsoleRegion::Pal: spcSampleRate = (uint32_t)(SoundResampler::SpcSampleRate * (50.0 / 50.00697796826829)); break;
}
}
double targetRate = sampleRate * GetTargetRateAdjustment();
if(targetRate != _previousTargetRate) {
blip_set_rates(_blipBufLeft, SoundResampler::SpcSampleRate, targetRate);
blip_set_rates(_blipBufRight, SoundResampler::SpcSampleRate, targetRate);
if(targetRate != _previousTargetRate || spcSampleRate != _prevSpcSampleRate) {
blip_set_rates(_blipBufLeft, spcSampleRate, targetRate);
blip_set_rates(_blipBufRight, spcSampleRate, targetRate);
_previousTargetRate = targetRate;
_prevSpcSampleRate = spcSampleRate;
}
}

1
Core/SoundResampler.h
View file

@ -14,6 +14,7 @@ private:
double _rateAdjustment = 1.0;
double _previousTargetRate = 0;
uint32_t _prevSpcSampleRate = 0;
int32_t _underTarget = 0;
blip_t *_blipBufLeft = nullptr;