1 files changed, 125 insertions, 0 deletions
diff --git a/Ryujinx.Audio.Renderer/Dsp/Command/VolumeCommand.cs b/Ryujinx.Audio.Renderer/Dsp/Command/VolumeCommand.cs
new file mode 100644
index 00000000..735a0a68
--- /dev/null
+++ b/Ryujinx.Audio.Renderer/Dsp/Command/VolumeCommand.cs
@@ -0,0 +1,125 @@
+//
+// Copyright (c) 2019-2020 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 System;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Runtime.Intrinsics;
+using System.Runtime.Intrinsics.X86;
+
+namespace Ryujinx.Audio.Renderer.Dsp.Command
+{
+    public class VolumeCommand : ICommand
+    {
+        public bool Enabled { get; set; }
+
+        public int NodeId { get; }
+
+        public CommandType CommandType => CommandType.Volume;
+
+        public ulong EstimatedProcessingTime { get; set; }
+
+        public ushort InputBufferIndex { get; }
+        public ushort OutputBufferIndex { get; }
+
+        public float Volume { get; }
+
+        public VolumeCommand(float volume, uint bufferIndex, int nodeId)
+        {
+            Enabled = true;
+            NodeId = nodeId;
+
+            InputBufferIndex = (ushort)bufferIndex;
+            OutputBufferIndex = (ushort)bufferIndex;
+
+            Volume = volume;
+        }
+
+        private void ProcessVolumeAvx(Span<float> outputBuffer, ReadOnlySpan<float> inputBuffer)
+        {
+            Vector256<float> volumeVec = Vector256.Create(Volume);
+
+            ReadOnlySpan<Vector256<float>> inputVec = MemoryMarshal.Cast<float, Vector256<float>>(inputBuffer);
+            Span<Vector256<float>> outputVec = MemoryMarshal.Cast<float, Vector256<float>>(outputBuffer);
+
+            int sisdStart = inputVec.Length * 8;
+
+            for (int i = 0; i < inputVec.Length; i++)
+            {
+                outputVec[i] = Avx.Ceiling(Avx.Multiply(inputVec[i], volumeVec));
+            }
+
+            for (int i = sisdStart; i < inputBuffer.Length; i++)
+            {
+                outputBuffer[i] = FloatingPointHelper.MultiplyRoundUp(inputBuffer[i], Volume);
+            }
+        }
+
+        private void ProcessVolumeSse41(Span<float> outputBuffer, ReadOnlySpan<float> inputBuffer)
+        {
+            Vector128<float> volumeVec = Vector128.Create(Volume);
+
+            ReadOnlySpan<Vector128<float>> inputVec = MemoryMarshal.Cast<float, Vector128<float>>(inputBuffer);
+            Span<Vector128<float>> outputVec = MemoryMarshal.Cast<float, Vector128<float>>(outputBuffer);
+
+            int sisdStart = inputVec.Length * 4;
+
+            for (int i = 0; i < inputVec.Length; i++)
+            {
+                outputVec[i] = Sse41.Ceiling(Sse.Multiply(inputVec[i], volumeVec));
+            }
+
+            for (int i = sisdStart; i < inputBuffer.Length; i++)
+            {
+                outputBuffer[i] = FloatingPointHelper.MultiplyRoundUp(inputBuffer[i], Volume);
+            }
+        }
+
+        private void ProcessVolume(Span<float> outputBuffer, ReadOnlySpan<float> inputBuffer)
+        {
+            if (Avx.IsSupported)
+            {
+                ProcessVolumeAvx(outputBuffer, inputBuffer);
+            }
+            else if (Sse41.IsSupported)
+            {
+                ProcessVolumeSse41(outputBuffer, inputBuffer);
+            }
+            else
+            {
+                ProcessVolumeSlowPath(outputBuffer, inputBuffer);
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private void ProcessVolumeSlowPath(Span<float> outputBuffer, ReadOnlySpan<float> inputBuffer)
+        {
+            for (int i = 0; i < outputBuffer.Length; i++)
+            {
+                outputBuffer[i] = FloatingPointHelper.MultiplyRoundUp(inputBuffer[i], Volume);
+            }
+        }
+
+        public void Process(CommandList context)
+        {
+            ReadOnlySpan<float> inputBuffer = context.GetBuffer(InputBufferIndex);
+            Span<float> outputBuffer = context.GetBuffer(OutputBufferIndex);
+
+            ProcessVolume(outputBuffer, inputBuffer);
+        }
+    }
+}