Added GameCube Keyboard support.

Source/Core/Core/HW/GCKeyboard.cpp

@@ -0,0 +1,71 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "Common/CommonTypes.h"
+
+#include "Core/ConfigManager.h"
+#include "Core/HW/GCKeyboard.h"
+#include "Core/HW/GCKeyboardEmu.h"
+#include "InputCommon/InputConfig.h"
+#include "InputCommon/KeyboardStatus.h"
+#include "InputCommon/ControllerInterface/ControllerInterface.h"
+
+namespace Keyboard
+{
+
+static InputConfig s_config("GCKeyNew", _trans("Keyboard"), "GCKey");
+InputConfig* GetConfig()
+{
+	return &s_config;
+}
+
+void Shutdown()
+{
+	std::vector<ControllerEmu*>::const_iterator
+		i = s_config.controllers.begin(),
+		e = s_config.controllers.end();
+	for ( ; i!=e; ++i )
+		delete *i;
+	s_config.controllers.clear();
+
+	g_controller_interface.Shutdown();
+}
+
+// if plugin isn't initialized, init and load config
+void Initialize(void* const hwnd)
+{
+	for (unsigned int i=0; i<4; ++i)
+		s_config.controllers.push_back(new GCKeyboard(i));
+
+	g_controller_interface.Initialize(hwnd);
+
+	// load the saved controller config
+	s_config.LoadConfig(true);
+}
+
+void GetStatus(u8 _port, KeyboardStatus* _pKeyboardStatus)
+{
+	memset(_pKeyboardStatus, 0, sizeof(*_pKeyboardStatus));
+	_pKeyboardStatus->err = PAD_ERR_NONE;
+
+	std::unique_lock<std::recursive_mutex> lk(s_config.controls_lock, std::try_to_lock);
+
+	if (!lk.owns_lock())
+	{
+		// if gui has lock (messing with controls), skip this input cycle
+		// center axes and return
+		_pKeyboardStatus->key0x = 0;
+		_pKeyboardStatus->key1x = 0;
+		_pKeyboardStatus->key2x = 0;
+		_pKeyboardStatus->key3x = 0;
+		_pKeyboardStatus->key4x = 0;
+		_pKeyboardStatus->key5x = 0;
+		return;
+	}
+
+	// get input
+	((GCKeyboard*)s_config.controllers[_port])->GetInput(_pKeyboardStatus);
+}
+
+}