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amadeus: Add missing compressor effect from REV11 (#4010)

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* amadeus: Add missing compressor effect from REV11

This was in my reversing notes but seems I completely forgot to
implement it

Also took the opportunity to simplify the Limiter effect a bit.

* Remove some outdated comment

* Address gdkchan's comments
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Mary-nyan 2022-12-06 15:04:25 +01:00 • committed by GitHub
parent dde9bb5c69
commit 40311310d1
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24 changed files with 658 additions and 27 deletions
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15
Ryujinx.Audio/Renderer/Dsp/Command/LimiterCommandVersion1.cs
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@ -90,32 +90,31 @@ namespace Ryujinx.Audio.Renderer.Dsp.Command
float inputCoefficient = Parameter.ReleaseCoefficient;
if (sampleInputMax > state.DectectorAverage[channelIndex])
if (sampleInputMax > state.DetectorAverage[channelIndex].Read())
{
inputCoefficient = Parameter.AttackCoefficient;
}
state.DectectorAverage[channelIndex] += inputCoefficient * (sampleInputMax - state.DectectorAverage[channelIndex]);
float detectorValue = state.DetectorAverage[channelIndex].Update(sampleInputMax, inputCoefficient);
float attenuation = 1.0f;
if (state.DectectorAverage[channelIndex] > Parameter.Threshold)
if (detectorValue > Parameter.Threshold)
{
attenuation = Parameter.Threshold / state.DectectorAverage[channelIndex];
attenuation = Parameter.Threshold / detectorValue;
}
float outputCoefficient = Parameter.ReleaseCoefficient;
if (state.CompressionGain[channelIndex] > attenuation)
if (state.CompressionGainAverage[channelIndex].Read() > attenuation)
{
outputCoefficient = Parameter.AttackCoefficient;
}
state.CompressionGain[channelIndex] += outputCoefficient * (attenuation - state.CompressionGain[channelIndex]);
float compressionGain = state.CompressionGainAverage[channelIndex].Update(attenuation, outputCoefficient);
ref float delayedSample = ref state.DelayedSampleBuffer[channelIndex * Parameter.DelayBufferSampleCountMax + state.DelayedSampleBufferPosition[channelIndex]];
float outputSample = delayedSample * state.CompressionGain[channelIndex] * Parameter.OutputGain;
float outputSample = delayedSample * compressionGain * Parameter.OutputGain;
*((float*)outputBuffers[channelIndex] + sampleIndex) = outputSample * short.MaxValue;