1 files changed, 74 insertions, 0 deletions
diff --git a/src/Ryujinx.Audio/Renderer/Dsp/State/AuxiliaryBufferHeader.cs b/src/Ryujinx.Audio/Renderer/Dsp/State/AuxiliaryBufferHeader.cs
new file mode 100644
index 00000000..4e8d11e4
--- /dev/null
+++ b/src/Ryujinx.Audio/Renderer/Dsp/State/AuxiliaryBufferHeader.cs
@@ -0,0 +1,74 @@
+using Ryujinx.Memory;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Audio.Renderer.Dsp.State
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0x80)]
+    public struct AuxiliaryBufferHeader
+    {
+        [StructLayout(LayoutKind.Sequential, Pack = 1, Size = 0x40)]
+        public struct AuxiliaryBufferInfo
+        {
+            private const uint ReadOffsetPosition = 0x0;
+            private const uint WriteOffsetPosition = 0x4;
+            private const uint LostSampleCountPosition = 0x8;
+            private const uint TotalSampleCountPosition = 0xC;
+
+            public uint ReadOffset;
+            public uint WriteOffset;
+            public uint LostSampleCount;
+            public uint TotalSampleCount;
+            private unsafe fixed uint _unknown[12];
+
+            public static uint GetReadOffset(IVirtualMemoryManager manager, ulong bufferAddress)
+            {
+                return manager.Read<uint>(bufferAddress + ReadOffsetPosition);
+            }
+
+            public static uint GetWriteOffset(IVirtualMemoryManager manager, ulong bufferAddress)
+            {
+                return manager.Read<uint>(bufferAddress + WriteOffsetPosition);
+            }
+
+            public static uint GetLostSampleCount(IVirtualMemoryManager manager, ulong bufferAddress)
+            {
+                return manager.Read<uint>(bufferAddress + LostSampleCountPosition);
+            }
+
+            public static uint GetTotalSampleCount(IVirtualMemoryManager manager, ulong bufferAddress)
+            {
+                return manager.Read<uint>(bufferAddress + TotalSampleCountPosition);
+            }
+
+            public static void SetReadOffset(IVirtualMemoryManager manager, ulong bufferAddress, uint value)
+            {
+                manager.Write(bufferAddress + ReadOffsetPosition, value);
+            }
+
+            public static void SetWriteOffset(IVirtualMemoryManager manager, ulong bufferAddress, uint value)
+            {
+                manager.Write(bufferAddress + WriteOffsetPosition, value);
+            }
+
+            public static void SetLostSampleCount(IVirtualMemoryManager manager, ulong bufferAddress, uint value)
+            {
+                manager.Write(bufferAddress + LostSampleCountPosition, value);
+            }
+
+            public static void SetTotalSampleCount(IVirtualMemoryManager manager, ulong bufferAddress, uint value)
+            {
+                manager.Write(bufferAddress + TotalSampleCountPosition, value);
+            }
+
+            public static void Reset(IVirtualMemoryManager manager, ulong bufferAddress)
+            {
+                // NOTE: Lost sample count is never reset, since REV10.
+                manager.Write(bufferAddress + ReadOffsetPosition, 0UL);
+                manager.Write(bufferAddress + TotalSampleCountPosition, 0);
+            }
+        }
+
+        public AuxiliaryBufferInfo CpuBufferInfo;
+        public AuxiliaryBufferInfo DspBufferInfo;
+    }
+}
+\ No newline at end of file