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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.Renderer.Server.Upsampler;
using System;
using System.Runtime.CompilerServices;
namespace Ryujinx.Audio.Renderer.Dsp.Command
{
public class UpsampleCommand : ICommand
{
public bool Enabled { get; set; }
public int NodeId { get; }
public CommandType CommandType => CommandType.Upsample;
public ulong EstimatedProcessingTime { get; set; }
public uint BufferCount { get; }
public uint InputBufferIndex { get; }
public uint InputSampleCount { get; }
public uint InputSampleRate { get; }
public UpsamplerState UpsamplerInfo { get; }
public Memory<float> OutBuffer { get; }
public UpsampleCommand(uint bufferOffset, UpsamplerState info, uint inputCount, Span<byte> inputBufferOffset, uint bufferCount, uint sampleCount, uint sampleRate, int nodeId)
{
Enabled = true;
NodeId = nodeId;
InputBufferIndex = 0;
OutBuffer = info.OutputBuffer;
BufferCount = bufferCount;
InputSampleCount = sampleCount;
InputSampleRate = sampleRate;
info.SourceSampleCount = inputCount;
info.InputBufferIndices = new ushort[inputCount];
for (int i = 0; i < inputCount; i++)
{
info.InputBufferIndices[i] = (ushort)(bufferOffset + inputBufferOffset[i]);
}
UpsamplerInfo = info;
}
private Span<float> GetBuffer(int index, int sampleCount)
{
return UpsamplerInfo.OutputBuffer.Span.Slice(index * sampleCount, sampleCount);
}
public void Process(CommandList context)
{
float ratio = (float)InputSampleRate / Constants.TargetSampleRate;
uint bufferCount = Math.Min(BufferCount, UpsamplerInfo.SourceSampleCount);
for (int i = 0; i < bufferCount; i++)
{
Span<float> inputBuffer = context.GetBuffer(UpsamplerInfo.InputBufferIndices[i]);
Span<float> outputBuffer = GetBuffer(UpsamplerInfo.InputBufferIndices[i], (int)UpsamplerInfo.SampleCount);
float fraction = 0.0f;
ResamplerHelper.ResampleForUpsampler(outputBuffer, inputBuffer, ratio, ref fraction, (int)(InputSampleCount / ratio));
}
}
}
}
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