Allow up to 16 gamepads with Sunshine hosts

app/streaming/input/gamepad.cpp

@@ -45,8 +45,8 @@ SdlInputHandler::findStateForGamepad(SDL_JoystickID id)
         }
     }
 
-    // This should only happen with > 4 gamepads
-    SDL_assert(SDL_NumJoysticks() > 4);
+    // This should only happen with too many gamepads
+    SDL_assert(SDL_NumJoysticks() > MAX_GAMEPADS);
     return nullptr;
 }
 

app/streaming/input/input.h

@@ -31,7 +31,9 @@ struct GamepadState {
     unsigned char lt, rt;
 };
 
-#define MAX_GAMEPADS 4
+// activeGamepadMask is a short, so we're bounded by the number of mask bits
+#define MAX_GAMEPADS 16
+
 #define MAX_FINGERS 2
 
 #define GAMEPAD_HAPTIC_METHOD_NONE 0