Reduce usage of Marshal.PtrToStructure and Marshal.StructureToPtr (#3805)

* common: Make BinaryReaderExtensions Read & Write take unamanged types

This allows us to not rely on Marshal.PtrToStructure and Marshal.StructureToPtr for those.

* common: Make MemoryHelper Read & Write takes unamanged types

* Update Marshal.SizeOf => Unsafe.SizeOf when appropriate and start moving software applet to unmanaged types

1 files changed, 15 insertions, 7 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs
index e7568a4a..058c5646 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs
@@ -1,9 +1,12 @@
-using Ryujinx.HLE.HOS.Services.Account.Acc;
+using Ryujinx.Common.Memory;
+using Ryujinx.HLE.HOS.Services.Account.Acc;
+using System;
 using System.Runtime.InteropServices;
+using System.Text;
 
 namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
 {
-    [StructLayout(LayoutKind.Sequential, Pack = 0x8, CharSet = CharSet.Ansi)]
+    [StructLayout(LayoutKind.Sequential, Pack = 0x8)]
     struct UserPresence
     {
         public UserId         UserId;
@@ -13,15 +16,20 @@ namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
         [MarshalAs(UnmanagedType.I1)]
         public bool SamePresenceGroupApplication;
 
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x3)]
-        public char[] Unknown;
+        public Array3<byte> Unknown;
+        private AppKeyValueStorageHolder _appKeyValueStorage;
 
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0xC0)]
-        public char[] AppKeyValueStorage;
+        public Span<byte> AppKeyValueStorage => MemoryMarshal.Cast<AppKeyValueStorageHolder, byte>(MemoryMarshal.CreateSpan(ref _appKeyValueStorage, AppKeyValueStorageHolder.Size));
+
+        [StructLayout(LayoutKind.Sequential, Pack = 0x1, Size = Size)]
+        private struct AppKeyValueStorageHolder
+        {
+            public const int Size = 0xC0;
+        }
 
         public override string ToString()
         {
-            return $"UserPresence {{ UserId: {UserId}, LastTimeOnlineTimestamp: {LastTimeOnlineTimestamp}, Status: {Status}, AppKeyValueStorage: {AppKeyValueStorage} }}";
+            return $"UserPresence {{ UserId: {UserId}, LastTimeOnlineTimestamp: {LastTimeOnlineTimestamp}, Status: {Status}, AppKeyValueStorage: {Encoding.ASCII.GetString(AppKeyValueStorage)} }}";
         }
     }
 }
\ No newline at end of file