SDK20 and REV15 support (ryubing/ryujinx!50)

See merge request ryubing/ryujinx!50

src/Ryujinx.Audio/Renderer/Parameter/SplitterDestinationInParameterVersion2a.cs

@@ -0,0 +1,100 @@
+using Ryujinx.Audio.Renderer.Dsp;
+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 SplitterDestinationInParameterVersion2a : 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<BiquadFilterParameter1> BiquadFilters;
+
+        /// <summary>
+        /// Set to true if in use.
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsUsed;
+
+        /// <summary>
+        /// Set to true to force resetting the previous mix volumes.
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool ResetPrevVolume;
+
+        /// <summary>
+        /// Reserved/padding.
+        /// </summary>
+        private unsafe fixed byte _reserved[10];
+
+        [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<BiquadFilterParameter2> ISplitterDestinationInParameter.BiquadFilters2
+        {
+            get
+            {
+                Array2<BiquadFilterParameter2> newFilters = new();
+                Span<BiquadFilterParameter2> newFiltersSpan = newFilters.AsSpan();
+                newFiltersSpan[0] = BiquadFilterHelper.ToBiquadFilterParameter2(BiquadFilters[0]);
+                newFiltersSpan[1] = BiquadFilterHelper.ToBiquadFilterParameter2(BiquadFilters[1]);
+                
+                return newFilters;
+            }
+        }
+
+        readonly bool ISplitterDestinationInParameter.IsUsed => IsUsed;
+        readonly bool ISplitterDestinationInParameter.ResetPrevVolume => ResetPrevVolume;
+
+        /// <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;
+        }
+    }
+}