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

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//
// 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/>.
//
using Ryujinx.Audio.Integration;
using Ryujinx.Audio.Renderer.Server.Sink;
using System;
using System.Runtime.CompilerServices;
using System.Text;
namespace Ryujinx.Audio.Renderer.Dsp.Command
{
public class DeviceSinkCommand : ICommand
{
public bool Enabled { get; set; }
public int NodeId { get; }
public CommandType CommandType => CommandType.DeviceSink;
public ulong EstimatedProcessingTime { get; set; }
public string DeviceName { get; }
public int SessionId { get; }
public uint InputCount { get; }
public ushort[] InputBufferIndices { get; }
public Memory<float> Buffers { get; }
public DeviceSinkCommand(uint bufferOffset, DeviceSink sink, int sessionId, Memory<float> buffers, int nodeId)
{
Enabled = true;
NodeId = nodeId;
DeviceName = Encoding.ASCII.GetString(sink.Parameter.DeviceName).TrimEnd('\0');
SessionId = sessionId;
InputCount = sink.Parameter.InputCount;
InputBufferIndices = new ushort[InputCount];
for (int i = 0; i < InputCount; i++)
{
InputBufferIndices[i] = (ushort)(bufferOffset + sink.Parameter.Input[i]);
}
if (sink.UpsamplerState != null)
{
Buffers = sink.UpsamplerState.OutputBuffer;
}
else
{
Buffers = buffers;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private Span<float> GetBuffer(int index, int sampleCount)
{
return Buffers.Span.Slice(index * sampleCount, sampleCount);
}
public void Process(CommandList context)
{
IHardwareDevice device = context.OutputDevice;
if (device.GetSampleRate() == Constants.TargetSampleRate)
{
int channelCount = (int)device.GetChannelCount();
uint bufferCount = Math.Min(device.GetChannelCount(), InputCount);
const int sampleCount = Constants.TargetSampleCount;
short[] outputBuffer = new short[bufferCount * sampleCount];
for (int i = 0; i < bufferCount; i++)
{
ReadOnlySpan<float> inputBuffer = GetBuffer(InputBufferIndices[i], sampleCount);
for (int j = 0; j < sampleCount; j++)
{
outputBuffer[i + j * channelCount] = PcmHelper.Saturate(inputBuffer[j]);
}
}
device.AppendBuffer(outputBuffer, InputCount);
}
else
{
// TODO: support resampling for device only supporting something different
throw new NotImplementedException();
}
}
}
}