1 files changed, 87 insertions, 0 deletions
diff --git a/Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs b/Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs
new file mode 100644
index 00000000..0761a8da
--- /dev/null
+++ b/Ryujinx.Audio.Renderer/Dsp/Command/UpsampleCommand.cs
@@ -0,0 +1,87 @@
+//
+// 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 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;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        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 / RendererConstants.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));
+            }
+        }
+    }
+}