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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 * Remove some outdated comment * Address gdkchan's comments
51 lines
1.7 KiB
C#
51 lines
1.7 KiB
C#
using Ryujinx.Audio.Renderer.Dsp.Effect;
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using Ryujinx.Audio.Renderer.Parameter.Effect;
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namespace Ryujinx.Audio.Renderer.Dsp.State
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{
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public class CompressorState
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{
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public ExponentialMovingAverage InputMovingAverage;
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public float Unknown4;
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public ExponentialMovingAverage CompressionGainAverage;
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public float CompressorGainReduction;
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public float Unknown10;
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public float Unknown14;
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public float PreviousCompressionEmaAlpha;
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public float MakeupGain;
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public float OutputGain;
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public CompressorState(ref CompressorParameter parameter)
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{
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InputMovingAverage = new ExponentialMovingAverage(0.0f);
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Unknown4 = 1.0f;
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CompressionGainAverage = new ExponentialMovingAverage(1.0f);
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UpdateParameter(ref parameter);
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}
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public void UpdateParameter(ref CompressorParameter parameter)
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{
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float threshold = parameter.Threshold;
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float ratio = 1.0f / parameter.Ratio;
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float attackCoefficient = parameter.AttackCoefficient;
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float makeupGain;
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if (parameter.MakeupGainEnabled)
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{
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makeupGain = (threshold * 0.5f * (ratio - 1.0f)) - 3.0f;
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}
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else
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{
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makeupGain = 0.0f;
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}
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PreviousCompressionEmaAlpha = attackCoefficient;
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MakeupGain = makeupGain;
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CompressorGainReduction = (1.0f - ratio) / Constants.ChannelCountMax;
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Unknown10 = threshold - 1.5f;
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Unknown14 = threshold + 1.5f;
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OutputGain = FloatingPointHelper.DecibelToLinearExtended(parameter.OutputGain + makeupGain);
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}
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}
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}
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