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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.Dsp.State;
using Ryujinx.Audio.Renderer.Parameter;
using Ryujinx.Memory;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using static Ryujinx.Audio.Renderer.Dsp.State.AuxiliaryBufferHeader;
using CpuAddress = System.UInt64;
namespace Ryujinx.Audio.Renderer.Dsp.Command
{
public class CaptureBufferCommand : ICommand
{
public bool Enabled { get; set; }
public int NodeId { get; }
public CommandType CommandType => CommandType.CaptureBuffer;
public ulong EstimatedProcessingTime { get; set; }
public uint InputBufferIndex { get; }
public ulong CpuBufferInfoAddress { get; }
public ulong DspBufferInfoAddress { get; }
public CpuAddress OutputBuffer { get; }
public uint CountMax { get; }
public uint UpdateCount { get; }
public uint WriteOffset { get; }
public bool IsEffectEnabled { get; }
public CaptureBufferCommand(uint bufferOffset, byte inputBufferOffset, ulong sendBufferInfo, bool isEnabled,
uint countMax, CpuAddress outputBuffer, uint updateCount, uint writeOffset, int nodeId)
{
Enabled = true;
NodeId = nodeId;
InputBufferIndex = bufferOffset + inputBufferOffset;
CpuBufferInfoAddress = sendBufferInfo;
DspBufferInfoAddress = sendBufferInfo + (ulong)Unsafe.SizeOf<AuxiliaryBufferHeader>();
OutputBuffer = outputBuffer;
CountMax = countMax;
UpdateCount = updateCount;
WriteOffset = writeOffset;
IsEffectEnabled = isEnabled;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private uint Write(IVirtualMemoryManager memoryManager, ulong outBufferAddress, uint countMax, ReadOnlySpan<int> buffer, uint count, uint writeOffset, uint updateCount)
{
if (countMax == 0 || outBufferAddress == 0)
{
return 0;
}
uint targetWriteOffset = writeOffset + AuxiliaryBufferInfo.GetWriteOffset(memoryManager, DspBufferInfoAddress);
if (targetWriteOffset > countMax)
{
return 0;
}
uint remaining = count;
uint inBufferOffset = 0;
while (remaining != 0)
{
uint countToWrite = Math.Min(countMax - targetWriteOffset, remaining);
memoryManager.Write(outBufferAddress + targetWriteOffset * sizeof(int), MemoryMarshal.Cast<int, byte>(buffer.Slice((int)inBufferOffset, (int)countToWrite)));
targetWriteOffset = (targetWriteOffset + countToWrite) % countMax;
remaining -= countToWrite;
inBufferOffset += countToWrite;
}
if (updateCount != 0)
{
uint dspTotalSampleCount = AuxiliaryBufferInfo.GetTotalSampleCount(memoryManager, DspBufferInfoAddress);
uint cpuTotalSampleCount = AuxiliaryBufferInfo.GetTotalSampleCount(memoryManager, CpuBufferInfoAddress);
uint totalSampleCountDiff = dspTotalSampleCount - cpuTotalSampleCount;
if (totalSampleCountDiff >= countMax)
{
uint dspLostSampleCount = AuxiliaryBufferInfo.GetLostSampleCount(memoryManager, DspBufferInfoAddress);
uint cpuLostSampleCount = AuxiliaryBufferInfo.GetLostSampleCount(memoryManager, CpuBufferInfoAddress);
uint lostSampleCountDiff = dspLostSampleCount - cpuLostSampleCount;
uint newLostSampleCount = lostSampleCountDiff + updateCount;
if (lostSampleCountDiff > newLostSampleCount)
{
newLostSampleCount = cpuLostSampleCount - 1;
}
AuxiliaryBufferInfo.SetLostSampleCount(memoryManager, DspBufferInfoAddress, newLostSampleCount);
}
uint newWriteOffset = (AuxiliaryBufferInfo.GetWriteOffset(memoryManager, DspBufferInfoAddress) + updateCount) % countMax;
AuxiliaryBufferInfo.SetWriteOffset(memoryManager, DspBufferInfoAddress, newWriteOffset);
uint newTotalSampleCount = totalSampleCountDiff + newWriteOffset;
AuxiliaryBufferInfo.SetTotalSampleCount(memoryManager, DspBufferInfoAddress, newTotalSampleCount);
}
return count;
}
public void Process(CommandList context)
{
Span<float> inputBuffer = context.GetBuffer((int)InputBufferIndex);
if (IsEffectEnabled)
{
Span<int> inputBufferInt = MemoryMarshal.Cast<float, int>(inputBuffer);
// Convert input data to the target format for user (int)
DataSourceHelper.ToInt(inputBufferInt, inputBuffer, inputBuffer.Length);
// Send the input to the user
Write(context.MemoryManager, OutputBuffer, CountMax, inputBufferInt, context.SampleCount, WriteOffset, UpdateCount);
// Convert back to float
DataSourceHelper.ToFloat(inputBuffer, inputBufferInt, inputBuffer.Length);
}
else
{
AuxiliaryBufferInfo.Reset(context.MemoryManager, DspBufferInfoAddress);
}
}
}
}
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