Ryujinx/Ryujinx.Audio/Renderer/Dsp/Command/MixRampCommand.cs

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using Ryujinx.Audio.Renderer.Common;
using System;
using System.Runtime.CompilerServices;
namespace Ryujinx.Audio.Renderer.Dsp.Command
{
public class MixRampCommand : ICommand
{
public bool Enabled { get; set; }
public int NodeId { get; }
public CommandType CommandType => CommandType.MixRamp;
public ulong EstimatedProcessingTime { get; set; }
public ushort InputBufferIndex { get; }
public ushort OutputBufferIndex { get; }
public float Volume0 { get; }
public float Volume1 { get; }
public Memory<VoiceUpdateState> State { get; }
public int LastSampleIndex { get; }
public MixRampCommand(float volume0, float volume1, uint inputBufferIndex, uint outputBufferIndex, int lastSampleIndex, Memory<VoiceUpdateState> state, int nodeId)
{
Enabled = true;
NodeId = nodeId;
InputBufferIndex = (ushort)inputBufferIndex;
OutputBufferIndex = (ushort)outputBufferIndex;
Volume0 = volume0;
Volume1 = volume1;
State = state;
LastSampleIndex = lastSampleIndex;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private float ProcessMixRamp(Span<float> outputBuffer, ReadOnlySpan<float> inputBuffer, int sampleCount)
{
float ramp = (Volume1 - Volume0) / sampleCount;
float volume = Volume0;
float state = 0;
for (int i = 0; i < sampleCount; i++)
{
state = FloatingPointHelper.MultiplyRoundUp(inputBuffer[i], volume);
outputBuffer[i] += state;
volume += ramp;
}
return state;
}
public void Process(CommandList context)
{
ReadOnlySpan<float> inputBuffer = context.GetBuffer(InputBufferIndex);
Span<float> outputBuffer = context.GetBuffer(OutputBufferIndex);
State.Span[0].LastSamples[LastSampleIndex] = ProcessMixRamp(outputBuffer, inputBuffer, (int)context.SampleCount);
}
}
}