Add the LED functionality to the base IGamepad interface

src/Ryujinx.Input.SDL2/SDL2Gamepad.cs

@@ -103,16 +103,16 @@ namespace Ryujinx.Input.SDL2
             }
         }
 
-        public void SetLedColor()
+        public void SetLed(uint packedRgb)
         {
+            if (!Features.HasFlag(GamepadFeaturesFlag.Led)) return;
             if (!HasConfiguration) return;
             if (!_configuration.Led.EnableLed) return;
             
-            uint _rawColor = _configuration.Led.LedColor;
-            byte red = (byte)(_rawColor >> 16);
-            byte green = (byte)(_rawColor >> 8);
-            byte blue = (byte)(_rawColor % 256);
-                
+            byte red = (byte)(packedRgb >> 16);
+            byte green = (byte)(packedRgb >> 8);
+            byte blue = (byte)(packedRgb % 256);
+
             SDL_GameControllerSetLED(_gamepadHandle, red, green, blue);
         }
 
@@ -235,7 +235,7 @@ namespace Ryujinx.Input.SDL2
                 _configuration = (StandardControllerInputConfig)configuration;
 
                 if (Features.HasFlag(GamepadFeaturesFlag.Led))
-                    SetLedColor();
+                    SetLed(_configuration.Led.LedColor);
                 
                 _buttonsUserMapping.Clear();
 

src/Ryujinx.Input.SDL2/SDL2Keyboard.cs

@@ -384,6 +384,8 @@ namespace Ryujinx.Input.SDL2
                 _buttonsUserMapping.Add(new ButtonMappingEntry(GamepadButtonInputId.SingleLeftTrigger1, (Key)_configuration.RightJoycon.ButtonSl));
             }
         }
+        
+        public void SetLed(uint packedRgb) {}
 
         public void SetTriggerThreshold(float triggerThreshold)
         {

src/Ryujinx.Input.SDL2/SDL2Mouse.cs

@@ -75,6 +75,8 @@ namespace Ryujinx.Input.SDL2
         {
             throw new NotImplementedException();
         }
+        
+        public void SetLed(uint packedRgb) {}
 
         public void SetTriggerThreshold(float triggerThreshold)
         {

src/Ryujinx.Input/IGamepad.cs

@@ -65,6 +65,13 @@ namespace Ryujinx.Input
         /// <param name="configuration">The configuration of the gamepad</param>
         void SetConfiguration(InputConfig configuration);
 
+        /// <summary>
+        /// Set the LED on the gamepad to a given color.
+        /// </summary>
+        /// <remarks>Does nothing on a controller without LED functionality.</remarks>
+        /// <param name="packedRgb">The packed RGB integer.</param>
+        void SetLed(uint packedRgb);
+
         /// <summary>
         /// Starts a rumble effect on the gamepad.
         /// </summary>

src/Ryujinx/Input/AvaloniaKeyboard.cs

@@ -142,6 +142,8 @@ namespace Ryujinx.Ava.Input
 #pragma warning restore IDE0055
             }
         }
+        
+        public void SetLed(uint packedRgb) { }
 
         public void SetTriggerThreshold(float triggerThreshold) { }
 

src/Ryujinx/Input/AvaloniaMouse.cs

@@ -73,6 +73,8 @@ namespace Ryujinx.Ava.Input
         {
             throw new NotImplementedException();
         }
+        
+        public void SetLed(uint packedRgb) { }
 
         public void SetTriggerThreshold(float triggerThreshold)
         {