1 files changed, 93 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/HOS/Ipc/IpcHandleDesc.cs b/src/Ryujinx.HLE/HOS/Ipc/IpcHandleDesc.cs
new file mode 100644
index 00000000..c7ef7e9c
--- /dev/null
+++ b/src/Ryujinx.HLE/HOS/Ipc/IpcHandleDesc.cs
@@ -0,0 +1,93 @@
+using Microsoft.IO;
+using Ryujinx.Common;
+using Ryujinx.Common.Memory;
+using System;
+using System.IO;
+
+namespace Ryujinx.HLE.HOS.Ipc
+{
+    class IpcHandleDesc
+    {
+        public bool HasPId { get; private set; }
+
+        public ulong PId { get; private set; }
+
+        public int[] ToCopy { get; private set; }
+        public int[] ToMove { get; private set; }
+
+        public IpcHandleDesc(BinaryReader reader)
+        {
+            int word = reader.ReadInt32();
+
+            HasPId = (word & 1) != 0;
+
+            PId = HasPId ? reader.ReadUInt64() : 0;
+
+            int toCopySize = (word >> 1) & 0xf;
+            int[] toCopy = toCopySize == 0 ? Array.Empty<int>() : new int[toCopySize];
+
+            for (int index = 0; index < toCopy.Length; index++)
+            {
+                toCopy[index] = reader.ReadInt32();
+            }
+
+            ToCopy = toCopy;
+
+            int toMoveSize = (word >> 5) & 0xf;
+            int[] toMove = toMoveSize == 0 ? Array.Empty<int>() : new int[toMoveSize];
+
+            for (int index = 0; index < toMove.Length; index++)
+            {
+                toMove[index] = reader.ReadInt32();
+            }
+
+            ToMove = toMove;
+        }
+
+        public IpcHandleDesc(int[] copy, int[] move)
+        {
+            ToCopy = copy ?? throw new ArgumentNullException(nameof(copy));
+            ToMove = move ?? throw new ArgumentNullException(nameof(move));
+        }
+
+        public IpcHandleDesc(int[] copy, int[] move, ulong pId) : this(copy, move)
+        {
+            PId = pId;
+
+            HasPId = true;
+        }
+
+        public static IpcHandleDesc MakeCopy(params int[] handles)
+        {
+            return new IpcHandleDesc(handles, Array.Empty<int>());
+        }
+
+        public static IpcHandleDesc MakeMove(params int[] handles)
+        {
+            return new IpcHandleDesc(Array.Empty<int>(), handles);
+        }
+
+        public RecyclableMemoryStream GetStream()
+        {
+            RecyclableMemoryStream ms = MemoryStreamManager.Shared.GetStream();
+
+            int word = HasPId ? 1 : 0;
+
+            word |= (ToCopy.Length & 0xf) << 1;
+            word |= (ToMove.Length & 0xf) << 5;
+
+            ms.Write(word);
+
+            if (HasPId)
+            {
+                ms.Write(PId);
+            }
+
+            ms.Write(ToCopy);
+            ms.Write(ToMove);
+
+            ms.Position = 0;
+            return ms;
+        }
+    }
+}
+\ No newline at end of file