no name: Mii Editor applet support (#2419)

* no name: Mii Editor applet support

* addresses gdkchan feedback

* Fix comment

* Bypass MountCounter of MiiDatabaseManager

* Fix GetSettingsPlatformRegion

* Disable Applet Menu for unsupported firmwares

3 files changed, 39 insertions, 4 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Mii/Helper.cs b/Ryujinx.HLE/HOS/Services/Mii/Helper.cs
index d5fa98ea..47debd59 100644
--- a/Ryujinx.HLE/HOS/Services/Mii/Helper.cs
+++ b/Ryujinx.HLE/HOS/Services/Mii/Helper.cs
@@ -36,7 +36,7 @@ namespace Ryujinx.HLE.HOS.Services.Mii
         public static UInt128 GetDeviceId()
         {
             // FIXME: call set:sys GetMiiAuthorId
-            return new UInt128(0, 1);
+            return new UInt128("5279754d69694e780000000000000000"); // RyuMiiNx
         }
 
         public static ReadOnlySpan<byte> Ver3FacelineColorTable => new byte[] { 0, 1, 2, 3, 4, 5 };
diff --git a/Ryujinx.HLE/HOS/Services/Mii/IImageDatabaseService.cs b/Ryujinx.HLE/HOS/Services/Mii/IImageDatabaseService.cs
index a9f76902..1792bbb7 100644
--- a/Ryujinx.HLE/HOS/Services/Mii/IImageDatabaseService.cs
+++ b/Ryujinx.HLE/HOS/Services/Mii/IImageDatabaseService.cs
@@ -1,8 +1,41 @@
-namespace Ryujinx.HLE.HOS.Services.Mii
+using Ryujinx.Common.Logging;
+
+namespace Ryujinx.HLE.HOS.Services.Mii
 {
     [Service("miiimg")] // 5.0.0+
     class IImageDatabaseService : IpcService
     {
+        private uint _imageCount;
+        private bool _isDirty;
+
         public IImageDatabaseService(ServiceCtx context) { }
+
+        [CommandHipc(0)]
+        // Initialize(b8) -> b8
+        public ResultCode Initialize(ServiceCtx context)
+        {
+            // TODO: Service uses MiiImage:/database.dat if true, seems to use hardcoded data if false.
+            bool useHardcodedData = context.RequestData.ReadBoolean();
+
+            _imageCount = 0;
+            _isDirty    = false;
+
+            context.ResponseData.Write(_isDirty);
+
+            Logger.Stub?.PrintStub(LogClass.ServiceMii, new { useHardcodedData });
+
+            return ResultCode.Success;
+        }
+
+        [CommandHipc(11)]
+        // GetCount() -> u32
+        public ResultCode GetCount(ServiceCtx context)
+        {
+            context.ResponseData.Write(_imageCount);
+
+            Logger.Stub?.PrintStub(LogClass.ServiceMii);
+
+            return ResultCode.Success;
+        }
     }
 }
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Mii/MiiDatabaseManager.cs b/Ryujinx.HLE/HOS/Services/Mii/MiiDatabaseManager.cs
index 4491f2c8..0bf15a7f 100644
--- a/Ryujinx.HLE/HOS/Services/Mii/MiiDatabaseManager.cs
+++ b/Ryujinx.HLE/HOS/Services/Mii/MiiDatabaseManager.cs
@@ -101,6 +101,9 @@ namespace Ryujinx.HLE.HOS.Services.Mii
             // Ensure we have valid data in the database
             _database.Format();
 
+            // TODO: Unmount is currently not implemented properly at dispose, implement that and decrement MountCounter.
+            MountCounter = 0;
+
             MountSave();
         }
 
@@ -151,8 +154,6 @@ namespace Ryujinx.HLE.HOS.Services.Mii
                 }
             }
 
-
-
             return result;
         }
 
@@ -183,6 +184,7 @@ namespace Ryujinx.HLE.HOS.Services.Mii
             if (result.IsSuccess())
             {
                 result = _filesystemClient.GetFileSize(out long fileSize, handle);
+
                 if (result.IsSuccess())
                 {
                     if (fileSize == Unsafe.SizeOf<NintendoFigurineDatabase>())