mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-11-11 22:26:39 +00:00
77 lines
2.1 KiB
C#
77 lines
2.1 KiB
C#
|
using System.Diagnostics;
|
||
|
|
||
|
namespace Ryujinx.Audio.Renderer.Dsp.Effect
|
||
|
{
|
||
|
public class DelayLine3d : IDelayLine
|
||
|
{
|
||
|
private float[] _workBuffer;
|
||
|
private uint _sampleRate;
|
||
|
private uint _currentSampleIndex;
|
||
|
private uint _lastSampleIndex;
|
||
|
|
||
|
public uint CurrentSampleCount { get; private set; }
|
||
|
public uint SampleCountMax { get; private set; }
|
||
|
|
||
|
public DelayLine3d(uint sampleRate, float delayTimeMax)
|
||
|
{
|
||
|
_sampleRate = sampleRate;
|
||
|
SampleCountMax = IDelayLine.GetSampleCount(_sampleRate, delayTimeMax);
|
||
|
_workBuffer = new float[SampleCountMax + 1];
|
||
|
|
||
|
SetDelay(delayTimeMax);
|
||
|
}
|
||
|
|
||
|
private void ConfigureDelay(uint targetSampleCount)
|
||
|
{
|
||
|
if (SampleCountMax >= targetSampleCount)
|
||
|
{
|
||
|
CurrentSampleCount = targetSampleCount;
|
||
|
_lastSampleIndex = (_currentSampleIndex + targetSampleCount) % (SampleCountMax + 1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
public void SetDelay(float delayTime)
|
||
|
{
|
||
|
ConfigureDelay(IDelayLine.GetSampleCount(_sampleRate, delayTime));
|
||
|
}
|
||
|
|
||
|
public float Read()
|
||
|
{
|
||
|
return _workBuffer[_currentSampleIndex];
|
||
|
}
|
||
|
|
||
|
public float Update(float value)
|
||
|
{
|
||
|
Debug.Assert(!float.IsNaN(value) && !float.IsInfinity(value));
|
||
|
|
||
|
_workBuffer[_lastSampleIndex++] = value;
|
||
|
|
||
|
float output = Read();
|
||
|
|
||
|
_currentSampleIndex++;
|
||
|
|
||
|
if (_currentSampleIndex >= SampleCountMax)
|
||
|
{
|
||
|
_currentSampleIndex = 0;
|
||
|
}
|
||
|
|
||
|
if (_lastSampleIndex >= SampleCountMax)
|
||
|
{
|
||
|
_lastSampleIndex = 0;
|
||
|
}
|
||
|
|
||
|
return output;
|
||
|
}
|
||
|
|
||
|
public float TapUnsafe(uint sampleIndex, int offset)
|
||
|
{
|
||
|
return IDelayLine.Tap(_workBuffer, (int)_lastSampleIndex, (int)sampleIndex + offset, (int)SampleCountMax + 1);
|
||
|
}
|
||
|
|
||
|
public float Tap(uint sampleIndex)
|
||
|
{
|
||
|
return TapUnsafe(sampleIndex, -1);
|
||
|
}
|
||
|
}
|
||
|
}
|