3 files changed, 136 insertions, 3 deletions
diff --git a/src/Ryujinx.Audio/Renderer/Parameter/ISplitterDestinationInParameter.cs b/src/Ryujinx.Audio/Renderer/Parameter/ISplitterDestinationInParameter.cs
new file mode 100644
index 00000000..807232f2
--- /dev/null
+++ b/src/Ryujinx.Audio/Renderer/Parameter/ISplitterDestinationInParameter.cs
@@ -0,0 +1,43 @@
+using Ryujinx.Common.Memory;
+using System;
+
+namespace Ryujinx.Audio.Renderer.Parameter
+{
+    /// <summary>
+    /// Generic interface for the splitter destination parameters.
+    /// </summary>
+    public interface ISplitterDestinationInParameter
+    {
+        /// <summary>
+        /// Target splitter destination data id.
+        /// </summary>
+        int Id { get; }
+
+        /// <summary>
+        /// The mix to output the result of the splitter.
+        /// </summary>
+        int DestinationId { get; }
+
+        /// <summary>
+        /// Biquad filter parameters.
+        /// </summary>
+        Array2<BiquadFilterParameter> BiquadFilters { get; }
+
+        /// <summary>
+        /// Set to true if in use.
+        /// </summary>
+        bool IsUsed { get; }
+
+        /// <summary>
+        /// Mix buffer volumes.
+        /// </summary>
+        /// <remarks>Used when a splitter id is specified in the mix.</remarks>
+        Span<float> MixBufferVolume { get; }
+
+        /// <summary>
+        /// Check if the magic is valid.
+        /// </summary>
+        /// <returns>Returns true if the magic is valid.</returns>
+        bool IsMagicValid();
+    }
+}
diff --git a/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameter.cs b/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameterVersion1.cs
index b74b67be..029c001e 100644
--- a/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameter.cs
+++ b/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameterVersion1.cs
@@ -1,3 +1,4 @@
+using Ryujinx.Common.Memory;
 using Ryujinx.Common.Utilities;
 using System;
 using System.Runtime.InteropServices;
@@ -5,10 +6,10 @@ using System.Runtime.InteropServices;
 namespace Ryujinx.Audio.Renderer.Parameter
 {
     /// <summary>
-    /// Input header for a splitter destination update.
+    /// Input header for a splitter destination version 1 update.
     /// </summary>
     [StructLayout(LayoutKind.Sequential, Pack = 1)]
-    public struct SplitterDestinationInParameter
+    public struct SplitterDestinationInParameterVersion1 : ISplitterDestinationInParameter
     {
         /// <summary>
         /// Magic of the input header.
@@ -41,7 +42,7 @@ namespace Ryujinx.Audio.Renderer.Parameter
         /// </summary>
         private unsafe fixed byte _reserved[3];
 
-        [StructLayout(LayoutKind.Sequential, Size = 4 * Constants.MixBufferCountMax, Pack = 1)]
+        [StructLayout(LayoutKind.Sequential, Size = sizeof(float) * Constants.MixBufferCountMax, Pack = 1)]
         private struct MixArray { }
 
         /// <summary>
@@ -50,6 +51,14 @@ namespace Ryujinx.Audio.Renderer.Parameter
         /// <remarks>Used when a splitter id is specified in the mix.</remarks>
         public Span<float> MixBufferVolume => SpanHelpers.AsSpan<MixArray, float>(ref _mixBufferVolume);
 
+        readonly int ISplitterDestinationInParameter.Id => Id;
+
+        readonly int ISplitterDestinationInParameter.DestinationId => DestinationId;
+
+        readonly Array2<BiquadFilterParameter> ISplitterDestinationInParameter.BiquadFilters => default;
+
+        readonly bool ISplitterDestinationInParameter.IsUsed => IsUsed;
+
         /// <summary>
         /// The expected constant of any input header.
         /// </summary>
diff --git a/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameterVersion2.cs b/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameterVersion2.cs
new file mode 100644
index 00000000..312be8b7
--- /dev/null
+++ b/src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameterVersion2.cs
@@ -0,0 +1,81 @@
+using Ryujinx.Common.Memory;
+using Ryujinx.Common.Utilities;
+using System;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Audio.Renderer.Parameter
+{
+    /// <summary>
+    /// Input header for a splitter destination version 2 update.
+    /// </summary>
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    public struct SplitterDestinationInParameterVersion2 : ISplitterDestinationInParameter
+    {
+        /// <summary>
+        /// Magic of the input header.
+        /// </summary>
+        public uint Magic;
+
+        /// <summary>
+        /// Target splitter destination data id.
+        /// </summary>
+        public int Id;
+
+        /// <summary>
+        /// Mix buffer volumes storage.
+        /// </summary>
+        private MixArray _mixBufferVolume;
+
+        /// <summary>
+        /// The mix to output the result of the splitter.
+        /// </summary>
+        public int DestinationId;
+
+        /// <summary>
+        /// Biquad filter parameters.
+        /// </summary>
+        public Array2<BiquadFilterParameter> BiquadFilters;
+
+        /// <summary>
+        /// Set to true if in use.
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsUsed;
+
+        /// <summary>
+        /// Reserved/padding.
+        /// </summary>
+        private unsafe fixed byte _reserved[11];
+
+        [StructLayout(LayoutKind.Sequential, Size = sizeof(float) * Constants.MixBufferCountMax, Pack = 1)]
+        private struct MixArray { }
+
+        /// <summary>
+        /// Mix buffer volumes.
+        /// </summary>
+        /// <remarks>Used when a splitter id is specified in the mix.</remarks>
+        public Span<float> MixBufferVolume => SpanHelpers.AsSpan<MixArray, float>(ref _mixBufferVolume);
+
+        readonly int ISplitterDestinationInParameter.Id => Id;
+
+        readonly int ISplitterDestinationInParameter.DestinationId => DestinationId;
+
+        readonly Array2<BiquadFilterParameter> ISplitterDestinationInParameter.BiquadFilters => BiquadFilters;
+
+        readonly bool ISplitterDestinationInParameter.IsUsed => IsUsed;
+
+        /// <summary>
+        /// The expected constant of any input header.
+        /// </summary>
+        private const uint ValidMagic = 0x44444E53;
+
+        /// <summary>
+        /// Check if the magic is valid.
+        /// </summary>
+        /// <returns>Returns true if the magic is valid.</returns>
+        public readonly bool IsMagicValid()
+        {
+            return Magic == ValidMagic;
+        }
+    }
+}