69 lines
2 KiB
C#
69 lines
2 KiB
C#
//
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// Copyright (c) 2019-2021 Ryujinx
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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namespace Ryujinx.Audio.Renderer.Dsp.Effect
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{
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public class DecayDelay : IDelayLine
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{
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private readonly IDelayLine _delayLine;
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public uint CurrentSampleCount => _delayLine.CurrentSampleCount;
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public uint SampleCountMax => _delayLine.SampleCountMax;
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private float _decayRate;
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public DecayDelay(IDelayLine delayLine)
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{
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_decayRate = 0.0f;
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_delayLine = delayLine;
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}
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public void SetDecayRate(float decayRate)
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{
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_decayRate = decayRate;
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}
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public float Update(float value)
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{
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float delayLineValue = _delayLine.Read();
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float processedValue = value - (_decayRate * delayLineValue);
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return _delayLine.Update(processedValue) + processedValue * _decayRate;
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}
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public void SetDelay(float delayTime)
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{
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_delayLine.SetDelay(delayTime);
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}
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public float Read()
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{
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return _delayLine.Read();
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}
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public float TapUnsafe(uint sampleIndex, int offset)
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{
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return _delayLine.TapUnsafe(sampleIndex, offset);
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}
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public float Tap(uint sampleIndex)
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{
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return _delayLine.Tap(sampleIndex);
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}
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}
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}
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