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