From cee712105850ac3385cd0091a923438167433f9f Mon Sep 17 00:00:00 2001
From: TSR Berry <20988865+TSRBerry@users.noreply.github.com>
Date: Sat, 8 Apr 2023 01:22:00 +0200
Subject: Move solution and projects to src

---
 .../Renderer/Server/MemoryPool/MemoryPoolState.cs  | 130 +++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 src/Ryujinx.Audio/Renderer/Server/MemoryPool/MemoryPoolState.cs

(limited to 'src/Ryujinx.Audio/Renderer/Server/MemoryPool/MemoryPoolState.cs')

diff --git a/src/Ryujinx.Audio/Renderer/Server/MemoryPool/MemoryPoolState.cs b/src/Ryujinx.Audio/Renderer/Server/MemoryPool/MemoryPoolState.cs
new file mode 100644
index 00000000..69466bab
--- /dev/null
+++ b/src/Ryujinx.Audio/Renderer/Server/MemoryPool/MemoryPoolState.cs
@@ -0,0 +1,130 @@
+using System;
+using System.Runtime.InteropServices;
+using CpuAddress = System.UInt64;
+using DspAddress = System.UInt64;
+
+namespace Ryujinx.Audio.Renderer.Server.MemoryPool
+{
+    /// <summary>
+    /// Server state for a memory pool.
+    /// </summary>
+    [StructLayout(LayoutKind.Sequential, Size = 0x20, Pack = Alignment)]
+    public struct MemoryPoolState
+    {
+        public const int Alignment = 0x10;
+
+        /// <summary>
+        /// The location of the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        public enum LocationType : uint
+        {
+            /// <summary>
+            /// <see cref="MemoryPoolState"/> located on the CPU side for user use.
+            /// </summary>
+            Cpu,
+
+            /// <summary>
+            /// <see cref="MemoryPoolState"/> located on the DSP side for system use.
+            /// </summary>
+            Dsp
+        }
+
+        /// <summary>
+        /// The CPU address associated to the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        public CpuAddress CpuAddress;
+
+        /// <summary>
+        /// The DSP address associated to the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        public DspAddress DspAddress;
+
+        /// <summary>
+        /// The size associated to the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        public ulong Size;
+
+        /// <summary>
+        /// The <see cref="LocationType"/> associated to the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        public LocationType Location;
+
+        /// <summary>
+        /// Set to true if the <see cref="MemoryPoolState"/> is used.
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsUsed;
+
+        public static unsafe MemoryPoolState* Null => (MemoryPoolState*)IntPtr.Zero.ToPointer();
+
+        /// <summary>
+        /// Create a new <see cref="MemoryPoolState"/> with the given <see cref="LocationType"/>.
+        /// </summary>
+        /// <param name="location">The location type to use.</param>
+        /// <returns>A new <see cref="MemoryPoolState"/> with the given <see cref="LocationType"/>.</returns>
+        public static MemoryPoolState Create(LocationType location)
+        {
+            return new MemoryPoolState
+            {
+                CpuAddress = 0,
+                DspAddress = 0,
+                Size = 0,
+                Location = location
+            };
+        }
+
+        /// <summary>
+        /// Set the <see cref="CpuAddress"/> and size of the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        /// <param name="cpuAddress">The <see cref="CpuAddress"/>.</param>
+        /// <param name="size">The size.</param>
+        public void SetCpuAddress(CpuAddress cpuAddress, ulong size)
+        {
+            CpuAddress = cpuAddress;
+            Size = size;
+        }
+
+        /// <summary>
+        /// Check if the given <see cref="CpuAddress"/> and size is contains in the <see cref="MemoryPoolState"/>.
+        /// </summary>
+        /// <param name="targetCpuAddress">The <see cref="CpuAddress"/>.</param>
+        /// <param name="size">The size.</param>
+        /// <returns>True if the <see cref="CpuAddress"/> is contained inside the <see cref="MemoryPoolState"/>.</returns>
+        public bool Contains(CpuAddress targetCpuAddress, ulong size)
+        {
+            if (CpuAddress <= targetCpuAddress && size + targetCpuAddress <= Size + CpuAddress)
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Translate the given CPU address to a DSP address.
+        /// </summary>
+        /// <param name="targetCpuAddress">The <see cref="CpuAddress"/>.</param>
+        /// <param name="size">The size.</param>
+        /// <returns>the target DSP address.</returns>
+        public DspAddress Translate(CpuAddress targetCpuAddress, ulong size)
+        {
+            if (Contains(targetCpuAddress, size) && IsMapped())
+            {
+                ulong offset = targetCpuAddress - CpuAddress;
+
+                return DspAddress + offset;
+            }
+
+            return 0;
+        }
+
+        /// <summary>
+        /// Is the <see cref="MemoryPoolState"/> mapped on the DSP?
+        /// </summary>
+        /// <returns>Returns true if the <see cref="MemoryPoolState"/> is mapped on the DSP.</returns>
+        public bool IsMapped()
+        {
+            return DspAddress != 0;
+        }
+    }
+}
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