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https://github.com/GreemDev/Ryujinx.git
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4c2ab880ef
* Ryujinx.Audio: Remove BOM from files * misc: Relicense Ryujinx.Audio under the terms of the MIT license With the approvals of all the Ryujinx.Audio contributors, this commit changes Ryujinx.Audio license from LGPLv3 to MIT.
78 lines
2.1 KiB
C#
78 lines
2.1 KiB
C#
using System;
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namespace Ryujinx.Audio.Renderer.Dsp.Effect
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{
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public class DelayLine : IDelayLine
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{
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private float[] _workBuffer;
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private uint _sampleRate;
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private uint _currentSampleIndex;
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private uint _lastSampleIndex;
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public uint CurrentSampleCount { get; private set; }
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public uint SampleCountMax { get; private set; }
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public DelayLine(uint sampleRate, float delayTimeMax)
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{
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_sampleRate = sampleRate;
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SampleCountMax = IDelayLine.GetSampleCount(_sampleRate, delayTimeMax);
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_workBuffer = new float[SampleCountMax + 1];
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SetDelay(delayTimeMax);
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}
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private void ConfigureDelay(uint targetSampleCount)
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{
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CurrentSampleCount = Math.Min(SampleCountMax, targetSampleCount);
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_currentSampleIndex = 0;
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if (CurrentSampleCount == 0)
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{
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_lastSampleIndex = 0;
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}
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else
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{
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_lastSampleIndex = CurrentSampleCount - 1;
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}
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}
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public void SetDelay(float delayTime)
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{
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ConfigureDelay(IDelayLine.GetSampleCount(_sampleRate, delayTime));
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}
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public float Read()
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{
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return _workBuffer[_currentSampleIndex];
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}
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public float Update(float value)
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{
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float output = Read();
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_workBuffer[_currentSampleIndex++] = value;
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if (_currentSampleIndex >= _lastSampleIndex)
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{
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_currentSampleIndex = 0;
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}
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return output;
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}
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public float TapUnsafe(uint sampleIndex, int offset)
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{
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return IDelayLine.Tap(_workBuffer, (int)_currentSampleIndex, (int)sampleIndex + offset, (int)CurrentSampleCount);
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}
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public float Tap(uint sampleIndex)
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{
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if (sampleIndex >= CurrentSampleCount)
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{
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sampleIndex = CurrentSampleCount - 1;
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}
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return TapUnsafe(sampleIndex, -1);
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}
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}
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}
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