Review Changes 13 - const reference, public member documentation, enum class

src/input_common/input_common.cpp

@@ -32,11 +32,11 @@ static void InputCallback(u64 userdata, int cycles_late) {
     CoreTiming::ScheduleEvent(frame_ticks - cycles_late, input_event);
 }
 
-std::string InputBase::GetDeviceName() const {
+const std::string& InputBase::GetDeviceName() const {
     return device_name;
 }
 
-Service::HID::PadState InputBase::GetPadState() const {
+const Service::HID::PadState& InputBase::GetPadState() const {
     return controller.pad_state;
 }
 

src/input_common/input_common.h

@@ -10,7 +10,7 @@
 namespace InputCommon {
 
 /// Enum defining available backends
-enum InputBackends {
+enum class InputBackends {
     NONE,
     SDL2
 };
@@ -32,12 +32,19 @@ public:
     /// Shuts down all backend related data
     virtual void Shutdown() = 0; 
 
-    /// Returns internal name of currently selected device. Expose this to the UI
-    std::string GetDeviceName() const;
+    /**
+     * Returns internal name of currently selected device. Expose this to the UI
+     * @returns A string of the device name, e.g. "SDL::PS3 Controller"
+     */
+    const std::string& GetDeviceName() const;
 
-    /// Returns internal pad state
-    Service::HID::PadState GetPadState() const;
+    /**
+     * Returns internal pad state
+     * @returns PadState structure from the HID service
+     */
+    const Service::HID::PadState& GetPadState() const;
 
+    /// Current input system activation status
     bool activated;
 
 protected:
@@ -48,7 +55,10 @@ protected:
     ControllerState controller;
 };
 
-/// Initialize the user input system
+/**
+ * Initializes the user input system
+ * @param backend Enumeration of the backend to use
+ */
 void Init(InputBackends backend);
 
 /// Deactive the user input system

src/input_common/sdl_input/sdl_input.h

@@ -33,10 +33,19 @@ public:
     /// Sets up keymaps from input configuration
     void SetupKeyMaps();
 
-    /// Sets analog deadzones
+    /**
+     * Sets analog deadzones
+     * @param range Value SDL assigns for analog input
+     * Applicable values (-32768 to 32767)
+     */
     void SetDeadZone(int range);
 
-    /// Checks if analog input is within the dead zone
+    /**
+     * Checks if analog input is within the dead zone
+     * @param range Value SDL assigns for analog input
+     * Applicable values (-32768 to 32767)
+     * @return True if outside dead zone, false otherwise
+     */
     bool CheckDeadZone(int range) const;
 
 private: