1 files changed, 154 insertions, 0 deletions
diff --git a/Ryujinx.Audio/Renderer/Dsp/Command/CaptureBufferCommand.cs b/Ryujinx.Audio/Renderer/Dsp/Command/CaptureBufferCommand.cs
new file mode 100644
index 00000000..c6c579d3
--- /dev/null
+++ b/Ryujinx.Audio/Renderer/Dsp/Command/CaptureBufferCommand.cs
@@ -0,0 +1,154 @@
+//
+// 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);
+            }
+        }
+    }
+}