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| author | Mary-nyan <mary@mary.zone> | 2022-12-06 15:04:25 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-12-06 15:04:25 +0100 |
| commit | 40311310d1a6d2fde2ee9f04bfa1f21ced7cbee2 (patch) | |
| tree | beec52c0a73006552aae3b1d9538240ddc89e6ae /Ryujinx.Audio/Renderer/Dsp/State/CompressorState.cs | |
| parent | dde9bb5c69d2e1a70df82af8accd3d01fb94b78d (diff) | |
amadeus: Add missing compressor effect from REV11 (#4010)1.1.435
* 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* Remove some outdated comment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
Diffstat (limited to 'Ryujinx.Audio/Renderer/Dsp/State/CompressorState.cs')
| -rw-r--r-- | Ryujinx.Audio/Renderer/Dsp/State/CompressorState.cs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Ryujinx.Audio/Renderer/Dsp/State/CompressorState.cs b/Ryujinx.Audio/Renderer/Dsp/State/CompressorState.cs new file mode 100644 index 00000000..76aff807 --- /dev/null +++ b/Ryujinx.Audio/Renderer/Dsp/State/CompressorState.cs @@ -0,0 +1,51 @@ +using Ryujinx.Audio.Renderer.Dsp.Effect; +using Ryujinx.Audio.Renderer.Parameter.Effect; + +namespace Ryujinx.Audio.Renderer.Dsp.State +{ + public class CompressorState + { + public ExponentialMovingAverage InputMovingAverage; + public float Unknown4; + public ExponentialMovingAverage CompressionGainAverage; + public float CompressorGainReduction; + public float Unknown10; + public float Unknown14; + public float PreviousCompressionEmaAlpha; + public float MakeupGain; + public float OutputGain; + + public CompressorState(ref CompressorParameter parameter) + { + InputMovingAverage = new ExponentialMovingAverage(0.0f); + Unknown4 = 1.0f; + CompressionGainAverage = new ExponentialMovingAverage(1.0f); + + UpdateParameter(ref parameter); + } + + public void UpdateParameter(ref CompressorParameter parameter) + { + float threshold = parameter.Threshold; + float ratio = 1.0f / parameter.Ratio; + float attackCoefficient = parameter.AttackCoefficient; + float makeupGain; + + if (parameter.MakeupGainEnabled) + { + makeupGain = (threshold * 0.5f * (ratio - 1.0f)) - 3.0f; + } + else + { + makeupGain = 0.0f; + } + + PreviousCompressionEmaAlpha = attackCoefficient; + MakeupGain = makeupGain; + CompressorGainReduction = (1.0f - ratio) / Constants.ChannelCountMax; + Unknown10 = threshold - 1.5f; + Unknown14 = threshold + 1.5f; + OutputGain = FloatingPointHelper.DecibelToLinearExtended(parameter.OutputGain + makeupGain); + } + } +} |