#include "stdafx.h"
#include "CLCDConnectionLogitech.h"
#include "CLCDOutputManager.h"

DWORD WINAPI softButtonCallback(IN int, IN DWORD dwButtons, IN const PVOID pContext)
{
	((CLCDConnectionLogitech*)pContext)->OnSoftButtonCB(dwButtons);
	return 0;
}

DWORD WINAPI notificationCallback(IN int,
	IN const PVOID pContext,
	IN DWORD notificationCode,
	IN DWORD notifyParm1,
	IN DWORD notifyParm2,
	IN DWORD notifyParm3,
	IN DWORD notifyParm4)
{
	((CLCDConnectionLogitech*)pContext)->OnNotificationCB(notificationCode, notifyParm1, notifyParm2, notifyParm3, notifyParm4);
	return 0;
}


void __cdecl initializeDrawingThread(CLCDConnectionLogitech *pParam)
{
	pParam->runDrawingThread();
}

void CLCDConnectionLogitech::runDrawingThread()
{
	m_hStopEvent = CreateEvent(nullptr, FALSE, FALSE, nullptr);
	m_hDrawEvent = CreateEvent(nullptr, FALSE, FALSE, nullptr);

	uint32_t dwRes = 0;

	while (1) {
		HANDLE hArray[2] = {m_hStopEvent, m_hDrawEvent};
		dwRes = WaitForMultipleObjects(2, hArray, FALSE, INFINITE);
		if (dwRes == WAIT_OBJECT_0) {
			break;
		}
		else if (dwRes == WAIT_OBJECT_0 + 1) {
			uint32_t rc;
			if (GetConnectionState() != CONNECTED) {
				continue;
			}
			// do a sync update if the applet is in the foreground, or every 500 ms
			// the delay is there because sync updates can take up to 33ms to fail
			if (m_dwForegroundCheck < GetTickCount()) {
				m_dwForegroundCheck = GetTickCount() + 500;
				rc = lgLcdUpdateBitmap(m_hDevice, &m_lcdBitmap.hdr, LGLCD_SYNC_COMPLETE_WITHIN_FRAME(m_iPriority));
				if (rc == ERROR_ACCESS_DENIED) {
					rc = ERROR_SUCCESS;
					m_bIsForeground = false;
				}
				else if (rc == ERROR_SUCCESS)
					m_bIsForeground = true;
			}
			else
				rc = lgLcdUpdateBitmap(m_hDevice, &m_lcdBitmap.hdr, LGLCD_ASYNC_UPDATE(m_iPriority));

			if (rc != ERROR_SUCCESS) {
				HandleErrorFromAPI(rc);
			}
		}
	}
	CloseHandle(m_hStopEvent);
	CloseHandle(m_hDrawEvent);
}

// the connection instance
CLCDConnectionLogitech *CLCDConnectionLogitech::m_pInstance = nullptr;

//************************************************************************
// returns the connection type
//************************************************************************
int CLCDConnectionLogitech::GetConnectionType()
{
	return TYPE_LOGITECH;
}

//************************************************************************
// Constructor
//************************************************************************
CLCDConnectionLogitech::CLCDConnectionLogitech()
{
	m_iNumQVGADevices = 0;
	m_iNumBWDevices = 0;

	m_pDrawingBuffer = nullptr;
	m_pConnectedDevice = nullptr;
	m_hKeyboardHook = nullptr;
	m_bVolumeWheelHook = false;

	m_dwButtonState = 0;
	m_bConnected = false;
	m_bSetAsForeground = false;
	m_dwForegroundCheck = 0;

	m_hHIDDeviceHandle = nullptr;
	m_hConnection = LGLCD_INVALID_CONNECTION;
	m_hDevice = LGLCD_INVALID_DEVICE;

	m_bIsForeground = false;

	m_hDrawEvent = nullptr;
	m_hStopEvent = nullptr;

	CLCDConnectionLogitech::m_pInstance = this;

	m_hDrawingThread = mir_forkThread<CLCDConnectionLogitech>(initializeDrawingThread, this);
}

//************************************************************************
// Destructor
//************************************************************************
CLCDConnectionLogitech::~CLCDConnectionLogitech()
{
	do {
		SetEvent(m_hStopEvent);
	}
	while (WaitForSingleObject(m_hDrawingThread, 500) == WAIT_TIMEOUT);

	if (m_pDrawingBuffer != nullptr) {
		free(m_pDrawingBuffer);
	}
	SetVolumeWheelHook(false);
}

//************************************************************************
// Initializes the connection to the LCD
//************************************************************************
bool CLCDConnectionLogitech::Initialize(tstring strAppletName, bool bAutostart, bool bConfigDialog)
{

	m_strAppletName = strAppletName;
	// initialize the library
	if (lgLcdInit() != ERROR_SUCCESS)
		return false;

	memset(&m_connectContext, 0, sizeof(m_connectContext));
	m_connectContext.connection = LGLCD_INVALID_CONNECTION;

	m_connectContext.appFriendlyName = m_strAppletName.c_str();
	m_connectContext.isAutostartable = bAutostart;
	m_connectContext.isPersistent = bAutostart;
	m_connectContext.dwAppletCapabilitiesSupported = LGLCD_APPLET_CAP_BW | LGLCD_APPLET_CAP_QVGA;
	m_connectContext.onNotify.notificationCallback = notificationCallback;
	m_connectContext.onNotify.notifyContext = (PVOID)this;

	if (bConfigDialog) {
		m_connectContext.onConfigure.configCallback = CLCDOutputManager::configDialogCallback;
	}
	else {
		m_connectContext.onConfigure.configCallback = nullptr;
	}
	m_connectContext.onConfigure.configContext = nullptr;

	lgLcdSetDeviceFamiliesToUse(m_connectContext.connection, LGLCD_DEVICE_FAMILY_ALL, NULL);

	return true;
}

//************************************************************************
// returns the name of the attached device
//************************************************************************
tstring CLCDConnectionLogitech::GetDeviceName()
{
	if (m_pConnectedDevice->GetIndex() == LGLCD_DEVICE_BW) {
		return L"G15/Z10";
	}
	else {
		return L"G19";
	}
}

//************************************************************************
// enumerates all attached devices
//************************************************************************
CLgLCDDevice* CLCDConnectionLogitech::GetAttachedDevice(int iIndex)
{
	std::vector<CLgLCDDevice*>::iterator i = m_lcdDevices.begin();
	for (; i != m_lcdDevices.end(); i++) {
		if ((*i)->GetIndex() == iIndex) {
			return *i;
		}
	}

	return nullptr;
}

//************************************************************************
// disconnects the device
//************************************************************************
bool CLCDConnectionLogitech::Disconnect()
{
	if (!m_bConnected)
		return false;

	if (m_pConnectedDevice != nullptr) {
		delete m_pConnectedDevice;
		m_pConnectedDevice = nullptr;
	}

	m_bReconnect = false;

	HIDDeInit();
	lgLcdClose(m_hDevice);
	m_hDevice = LGLCD_INVALID_DEVICE;

	CLCDOutputManager::GetInstance()->OnDeviceDisconnected();

	m_bConnected = false;
	return true;
}

//************************************************************************
// returns a pointer to the current device
//************************************************************************
CLgLCDDevice* CLCDConnectionLogitech::GetConnectedDevice()
{
	return m_pConnectedDevice;
}

//************************************************************************
// connects to the device
//************************************************************************
bool CLCDConnectionLogitech::Connect(int iIndex)
{
	uint32_t rc;
	lgLcdOpenByTypeContext        OpenContext;
	if (m_bConnected && (iIndex == 0 || iIndex == GetConnectedDevice()->GetIndex()))
		return true;

	if (m_hConnection == LGLCD_INVALID_CONNECTION) {
		rc = lgLcdConnectEx(&m_connectContext);
		// establish the connection
		if (ERROR_SUCCESS == rc) {
			m_hConnection = m_connectContext.connection;
			m_hDevice = LGLCD_INVALID_CONNECTION;

			TRACE(L"CLCDConnectionLogitech: Connection to LCDManager established successfully!\n");
		}
		else {
			return false;
		}
	}

	// check if the specified device exists
	m_pConnectedDevice = GetAttachedDevice(iIndex);
	if (m_pConnectedDevice == nullptr) {
		iIndex = (!iIndex || iIndex == LGLCD_DEVICE_BW) ? LGLCD_DEVICE_BW : LGLCD_DEVICE_QVGA;
		m_pConnectedDevice = GetAttachedDevice(iIndex);
		if (m_pConnectedDevice == nullptr) {
			return false;
		}
	}

	// close the lcd device before we open up another
	if (LGLCD_INVALID_DEVICE != m_hDevice) {
		Disconnect();
	}

	// Now lets open the LCD. We must initialize the g_OpenContext structure.
	memset(&OpenContext, 0, sizeof(OpenContext));
	OpenContext.connection = m_hConnection;
	OpenContext.deviceType = m_pConnectedDevice->GetIndex();//LGLCD_DEVICE_QVGA;
	OpenContext.device = LGLCD_INVALID_DEVICE;

	// softbutton callbacks are not needed
	OpenContext.onSoftbuttonsChanged.softbuttonsChangedCallback = softButtonCallback;
	OpenContext.onSoftbuttonsChanged.softbuttonsChangedContext = (PVOID)this;

	// open the lcd
	rc = lgLcdOpenByType(&OpenContext);
	// failed to open the lcd
	if (rc != ERROR_SUCCESS)
		return false;

	m_hDevice = OpenContext.device;

	// Create the pixel buffer
	m_lcdBitmap.hdr.Format = OpenContext.deviceType == LGLCD_DEVICE_QVGA ? LGLCD_BMP_FORMAT_QVGAx32 : LGLCD_BMP_FORMAT_160x43x1;
	if (m_pDrawingBuffer != nullptr) {
		free(m_pDrawingBuffer);
	}

	m_pPixels = OpenContext.deviceType == LGLCD_DEVICE_QVGA ? m_lcdBitmap.bmp_qvga32.pixels : m_lcdBitmap.bmp_mono.pixels;
	m_iPixels = OpenContext.deviceType == LGLCD_DEVICE_QVGA ? sizeof(m_lcdBitmap.bmp_qvga32.pixels) : sizeof(m_lcdBitmap.bmp_mono.pixels);
	m_pDrawingBuffer = (uint8_t*)malloc(m_iPixels);
	memset(m_pDrawingBuffer, 0, m_iPixels);

	m_iPriority = LGLCD_PRIORITY_NORMAL;
	m_bConnected = true;

	HIDInit();

	m_bReconnect = true;

	CLCDOutputManager::GetInstance()->OnDeviceConnected();
	return true;
}

//************************************************************************
// Closes the connection with the LCD
//************************************************************************
bool CLCDConnectionLogitech::Shutdown()
{
	m_bConnected = false;

	SetVolumeWheelHook(false);

	Disconnect();

	if (LGLCD_INVALID_CONNECTION != m_hDevice)
		lgLcdDisconnect(m_hConnection);

	lgLcdDeInit();

	return true;
}

//************************************************************************
// Reads data from the keyboard HID device
//************************************************************************
bool CLCDConnectionLogitech::HIDReadData(uint8_t* data)
{
	static OVERLAPPED olRead;
	static HANDLE hReadEvent = CreateEvent(nullptr, false, true, L"ReadEvent");
	static uint8_t privateBuffer[9];

	DWORD TransBytes;
	if (!m_bConnected) {
		SetEvent(hReadEvent);
		return false;
	}

	uint32_t dwRes = WaitForSingleObject(hReadEvent, 0);
	if (dwRes == WAIT_OBJECT_0) {
		bool bRes = false;
		if (GetOverlappedResult(m_hHIDDeviceHandle, &olRead, &TransBytes, false)) {
			memcpy(data, privateBuffer, 9 * sizeof(uint8_t));
			bRes = true;
		}

		memset(&olRead, 0, sizeof(OVERLAPPED));
		olRead.hEvent = hReadEvent;

		if (!ReadFile(m_hHIDDeviceHandle, privateBuffer, 9, &TransBytes, &olRead)) {
			uint32_t error = GetLastError();
			if (error != ERROR_IO_PENDING) {
				return false;
			}
		}
		return bRes;
	}

	return false;
}

void CLCDConnectionLogitech::OnSoftButtonCB(uint32_t state)
{
	m_dwButtonState = state;
}

void CLCDConnectionLogitech::OnNotificationCB(uint32_t notificationCode, uint32_t notifyParm1, uint32_t, uint32_t, uint32_t)
{
	CLgLCDDevice *device;

	switch (notificationCode) {
	case LGLCD_NOTIFICATION_DEVICE_ARRIVAL:
		{
			int *counter = notifyParm1 == LGLCD_DEVICE_QVGA ? &m_iNumQVGADevices : &m_iNumBWDevices;
			if (*counter == 0) {
				SIZE size;
				if (notifyParm1 == LGLCD_DEVICE_QVGA) {
					size.cx = 320;
					size.cy = 240;
					device = new CLgLCDDevice(notifyParm1, size, 7, 4);
				}
				else {
					size.cx = 160;
					size.cy = 43;
					device = new CLgLCDDevice(notifyParm1, size, 4, 1);
				}
				m_lcdDevices.push_back(device);
			}

			(*counter)++;
			break;
		}
	case LGLCD_NOTIFICATION_DEVICE_REMOVAL:
		{
			int *counter = notifyParm1 == LGLCD_DEVICE_QVGA ? &m_iNumQVGADevices : &m_iNumBWDevices;
			(*counter)--;
			if (*counter == 0) {
				std::vector<CLgLCDDevice*>::iterator i = m_lcdDevices.begin();
				for (; i != m_lcdDevices.end(); i++) {
					if ((*i)->GetIndex() == notifyParm1) {
						device = *i;

						if (device == m_pConnectedDevice) {
							HandleErrorFromAPI(ERROR_DEVICE_NOT_CONNECTED);
						}

						m_lcdDevices.erase(i);
						delete device;

						break;
					}
				}
			}
			break;
		}
	}
}

//************************************************************************
// Update function
//************************************************************************
bool CLCDConnectionLogitech::Update()
{
	// check for lcd devices
	if (LGLCD_INVALID_DEVICE == m_hDevice) {
		if (m_bReconnect) {
			Connect();
		}
	}

	uint8_t buffer[9];
	if (HIDReadData(buffer)) {
		int button = 0;
		// mr key
		if (buffer[7] & 0x40) {
			button = 20;
			// lightbulb key
		}
		else if (buffer[1] & 0x80) {
			button = 21;
		}
		// m1,m2,m3
		for (int i = 0, w = 1; i < 3; i++, w *= 2) {
			if (buffer[6 + i] & w) {
				button = 30 + i;
			}
		}
		// g1 to g18
		if (buffer[8] & 0x40) {
			button = 18;
		}
		else {
			for (int j = 0; j < 3; j++) {
				int p = 1, w = 1;
				if (j == 1) {
					p = 2;
				}
				else if (j == 2) {
					w = 4;
				}

				for (int i = 0; i < 6; i++, w *= 2) {
					if (buffer[p + i] & w) {
						button = 1 + j * 6 + i;
					}
				}
			}
		}
		if (button != 0) {
			TRACE(L"GKey pressed: %d \n", button);
		}
	}

	return true;
}

//************************************************************************
// returns the id of the specified button
//************************************************************************
int CLCDConnectionLogitech::GetButtonId(int iButton)
{
	if (m_pConnectedDevice->GetIndex() == LGLCD_DEVICE_BW) {
		switch (iButton) {
		case 0: return LGLCDBUTTON_BUTTON0; break;
		case 1: return LGLCDBUTTON_BUTTON1; break;
		case 2: return LGLCDBUTTON_BUTTON2; break;
		case 3: return LGLCDBUTTON_BUTTON3; break;
		case 4: return LGLCDBUTTON_BUTTON4; break;
		case 5: return LGLCDBUTTON_BUTTON5; break;
		case 6: return LGLCDBUTTON_BUTTON6; break;
		case 7: return LGLCDBUTTON_BUTTON7; break;
		}
	}
	else {
		switch (iButton) {
		case 0: return LGLCDBUTTON_LEFT;	break;
		case 1: return LGLCDBUTTON_RIGHT;	break;
		case 2: return LGLCDBUTTON_OK;		break;
		case 3: return LGLCDBUTTON_CANCEL;	break;
		case 4: return LGLCDBUTTON_UP;		break;
		case 5: return LGLCDBUTTON_DOWN;	break;
		case 6: return LGLCDBUTTON_MENU;	break;
		}
	}

	return 0;
}

//************************************************************************
// Returns the state of the specified Button
//************************************************************************
bool CLCDConnectionLogitech::GetButtonState(int iButton)
{
	if (!GetConnectionState() == CONNECTED)
		return false;

	uint32_t dwButton = GetButtonId(iButton);

	if (m_dwButtonState & dwButton)
		return true;
	return false;
}

//************************************************************************
// Hides the applet
//************************************************************************
bool CLCDConnectionLogitech::HideApplet()
{
	if (!GetConnectionState() == CONNECTED)
		return false;

	uint32_t rc;

	rc = lgLcdUpdateBitmap(m_hDevice, &m_lcdBitmap.hdr, LGLCD_ASYNC_UPDATE(LGLCD_PRIORITY_IDLE_NO_SHOW));
	if (rc != ERROR_SUCCESS)
		return false;

	return true;
}

//************************************************************************
// Draws the specified bitmap on the LCD
//************************************************************************
bool CLCDConnectionLogitech::Draw()
{
	if (!GetConnectionState() == CONNECTED || !m_hDrawEvent)
		return false;

	memcpy(m_pPixels, m_pDrawingBuffer, m_iPixels);
	SetEvent(m_hDrawEvent);
	return true;
}

//************************************************************************
// Temporarily brings the applet to foreground
//************************************************************************
void CLCDConnectionLogitech::SetAlert(bool bAlert)
{
	m_iPriority = bAlert ? LGLCD_PRIORITY_ALERT : LGLCD_PRIORITY_NORMAL;
}

//************************************************************************
// Activates the applet on the LCD
//************************************************************************
void CLCDConnectionLogitech::SetAsForeground(bool bSetAsForeground)
{
	// TODO: Activate when 1.02 is out
	m_bSetAsForeground = bSetAsForeground;
	if (LGLCD_INVALID_DEVICE != m_hDevice)
		lgLcdSetAsLCDForegroundApp(m_hDevice, bSetAsForeground);
}

//************************************************************************
// returns wether the applet is currently activated
//************************************************************************
bool CLCDConnectionLogitech::IsForeground()
{
	return m_bIsForeground;
}

//************************************************************************
// Returns the display size
//************************************************************************
SIZE CLCDConnectionLogitech::GetDisplaySize()
{
	SIZE size = {0, 0};

	if (!GetConnectionState() == CONNECTED)
		return size;

	return m_pConnectedDevice->GetDisplaySize();
}

//************************************************************************
// Returns the number of buttons for the display
//************************************************************************
int CLCDConnectionLogitech::GetButtonCount()
{
	if (!GetConnectionState() == CONNECTED)
		return 0;

	return m_pConnectedDevice->GetButtonCount();
}

//************************************************************************
// Returns the number of available colors
//************************************************************************
int CLCDConnectionLogitech::GetColorCount()
{
	if (!GetConnectionState() == CONNECTED)
		return 0;

	return m_pConnectedDevice->GetColorCount();
}

//************************************************************************
// Get the pointer to the pixel buffer
//************************************************************************
uint8_t *CLCDConnectionLogitech::GetPixelBuffer()
{
	if (!GetConnectionState() == CONNECTED)
		return nullptr;

	return (uint8_t*)m_pDrawingBuffer;
}

//************************************************************************
// CLCDConnectionLogitech::HandleErrorFromAPI
//************************************************************************
void CLCDConnectionLogitech::HandleErrorFromAPI(uint32_t dwRes)
{
	switch (dwRes) {
		// all is well
	case ERROR_SUCCESS:
		break;
		// we lost our device
	case ERROR_DEVICE_NOT_CONNECTED:
		TRACE(L"CLCDConnectionLogitech::HandleErrorFromAPI(): Device was unplugged, closing device\n");
		Disconnect();
		SetReconnect(true);
		SetVolumeWheelHook(false);

		break;
	default:
		TRACE(L"CLCDConnectionLogitech::HandleErrorFromAPI(): FATAL ERROR, closing device and connection\n");
		Disconnect();
		SetReconnect(true);

		lgLcdDisconnect(m_hConnection);
		m_hConnection = LGLCD_INVALID_CONNECTION;

		SetVolumeWheelHook(false);
		break;
	}
}

//************************************************************************
// returns the connection state
//************************************************************************
int CLCDConnectionLogitech::GetConnectionState()
{
	return m_bConnected ? CONNECTED : DISCONNECTED;
}

bool CLCDConnectionLogitech::HIDInit()
{
	if (GetConnectionState() != CONNECTED ||
		m_pConnectedDevice->GetIndex() != LGLCD_DEVICE_BW) //LGLCD_DEVICE_FAMILY_KEYBOARD_G15)
		return false;

	// Logitech G15 
	int VendorID = 0x046d;
	int ProductID = 0xc222;

	//Use a series of API calls to find a HID with a specified Vendor IF and Product ID.

	HIDD_ATTRIBUTES						Attributes;
	SP_DEVICE_INTERFACE_DATA			devInfoData;
	bool								LastDevice = FALSE;
	int									MemberIndex = 0;
	LONG								Result;

	DWORD Length = 0;
	PSP_DEVICE_INTERFACE_DETAIL_DATA detailData = nullptr;
	HANDLE hDevInfo = nullptr;
	GUID HidGuid;
	ULONG Required = 0;

	bool MyDeviceDetected = false;

	/*
	API function: HidD_GetHidGuid
	Get the GUID for all system HIDs.
	Returns: the GUID in HidGuid.
	*/

	HidD_GetHidGuid(&HidGuid);

	/*
	API function: SetupDiGetClassDevs
	Returns: a handle to a device information set for all installed devices.
	Requires: the GUID returned by GetHidGuid.
	*/

	hDevInfo = SetupDiGetClassDevs
	(&HidGuid,
		nullptr,
		nullptr,
		DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);

	devInfoData.cbSize = sizeof(devInfoData);

	//Step through the available devices looking for the one we want. 
	//Quit on detecting the desired device or checking all available devices without success.

	MemberIndex = 0;
	LastDevice = FALSE;

	do {
		/*
		API function: SetupDiEnumDeviceInterfaces
		On return, MyDeviceInterfaceData contains the handle to a
		SP_DEVICE_INTERFACE_DATA structure for a detected device.
		Requires:
		The DeviceInfoSet returned in SetupDiGetClassDevs.
		The HidGuid returned in GetHidGuid.
		An index to specify a device.
		*/

		Result = SetupDiEnumDeviceInterfaces
		(hDevInfo,
			nullptr,
			&HidGuid,
			MemberIndex,
			&devInfoData);

		if (Result != 0) {
			//A device has been detected, so get more information about it.

			/*
			API function: SetupDiGetDeviceInterfaceDetail
			Returns: an SP_DEVICE_INTERFACE_DETAIL_DATA structure
			containing information about a device.
			To retrieve the information, call this function twice.
			The first time returns the size of the structure in Length.
			The second time returns a pointer to the data in DeviceInfoSet.
			Requires:
			A DeviceInfoSet returned by SetupDiGetClassDevs
			The SP_DEVICE_INTERFACE_DATA structure returned by SetupDiEnumDeviceInterfaces.

			The final parameter is an optional pointer to an SP_DEV_INFO_DATA structure.
			This application doesn't retrieve or use the structure.
			If retrieving the structure, set
			MyDeviceInfoData.cbSize = length of MyDeviceInfoData.
			and pass the structure's address.
			*/

			//Get the Length value.
			//The call will return with a "buffer too small" error which can be ignored.

			Result = SetupDiGetDeviceInterfaceDetail
			(hDevInfo,
				&devInfoData,
				nullptr,
				0,
				&Length,
				nullptr);

			//Allocate memory for the hDevInfo structure, using the returned Length.

			detailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(Length);

			//Set cbSize in the detailData structure.

			detailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);

			//Call the function again, this time passing it the returned buffer size.

			Result = SetupDiGetDeviceInterfaceDetail
			(hDevInfo,
				&devInfoData,
				detailData,
				Length,
				&Required,
				nullptr);

			// Open a handle to the device.
			// To enable retrieving information about a system mouse or keyboard,
			// don't request Read or Write access for this handle.

			/*
			API function: CreateFile
			Returns: a handle that enables reading and writing to the device.
			Requires:
			The DevicePath in the detailData structure
			returned by SetupDiGetDeviceInterfaceDetail.
			*/

			m_hHIDDeviceHandle = CreateFile
			(detailData->DevicePath,
				FILE_GENERIC_READ | FILE_GENERIC_WRITE,
				FILE_SHARE_READ | FILE_SHARE_WRITE,
				nullptr,
				OPEN_EXISTING,
				FILE_FLAG_OVERLAPPED,
				nullptr);

			/*
			API function: HidD_GetAttributes
			Requests information from the device.
			Requires: the handle returned by CreateFile.
			Returns: a HIDD_ATTRIBUTES structure containing
			the Vendor ID, Product ID, and Product Version Number.
			Use this information to decide if the detected device is
			the one we're looking for.
			*/

			//Set the Size to the number of bytes in the structure.

			Attributes.Size = sizeof(Attributes);

			Result = HidD_GetAttributes
			(m_hHIDDeviceHandle,
				&Attributes);

			//Is it the desired device?
			MyDeviceDetected = FALSE;

			if (Attributes.VendorID == VendorID) {
				if (Attributes.ProductID == ProductID) {
					//Both the Vendor ID and Product ID match.
					MyDeviceDetected = TRUE;
				}
				else
					CloseHandle(m_hHIDDeviceHandle);

			}
			else
				CloseHandle(m_hHIDDeviceHandle);

			//Free the memory used by the detailData structure (no longer needed).
			free(detailData);
		}

		else
			LastDevice = TRUE;

		MemberIndex = MemberIndex + 1;
	} //do
	while ((LastDevice == FALSE) && (MyDeviceDetected == FALSE));

	if (MyDeviceDetected) {
		PHIDP_PREPARSED_DATA	PreparsedData;

		HidD_GetPreparsedData
		(m_hHIDDeviceHandle,
			&PreparsedData);

		HidP_GetCaps
		(PreparsedData,
			&m_HIDCapabilities);

		HidD_FreePreparsedData(PreparsedData);
	}
	//Free the memory reserved for hDevInfo by SetupDiClassDevs.

	SetupDiDestroyDeviceInfoList(hDevInfo);

	return MyDeviceDetected;
}

bool CLCDConnectionLogitech::HIDDeInit()
{
	if (!m_hHIDDeviceHandle)
		return false;

	CloseHandle(m_hHIDDeviceHandle);
	m_hHIDDeviceHandle = nullptr;
	return true;
}

SG15LightStatus CLCDConnectionLogitech::GetLightStatus()
{
	SG15LightStatus status;
	status.bMKey[0] = false;
	status.bMKey[1] = false;
	status.bMKey[2] = false;
	status.bMRKey = false;
	status.eKBDBrightness = KBD_OFF;
	status.eLCDBrightness = LCD_OFF;

	if (GetConnectionState() != CONNECTED ||
		m_pConnectedDevice->GetIndex() != LGLCD_DEVICE_BW) //m_lcdDeviceDesc.deviceFamilyId != LGLCD_DEVICE_FAMILY_KEYBOARD_G15)
		return status;

	uint8_t *data = new uint8_t[m_HIDCapabilities.FeatureReportByteLength];

	data[0] = 0x02;
	data[1] = 0x02;
	data[2] = 0x00;
	data[3] = 0x00;

	HidD_GetFeature(m_hHIDDeviceHandle, data, m_HIDCapabilities.FeatureReportByteLength);


	// data[1] = Keys
	status.eKBDBrightness = (EKBDBrightness)data[1];

	// data[2] = LCD
	switch (data[2]) {
	case 0x02:
		status.eLCDBrightness = LCD_ON;
		break;
	case 0x01:
		status.eLCDBrightness = LCD_MEDIUM;
		break;
	default:
		status.eLCDBrightness = LCD_OFF;
		break;
	}
	// MKeys
	status.bMKey[0] = !(data[3] & G15_M1_LIGHT);
	status.bMKey[1] = !(data[3] & G15_M2_LIGHT);
	status.bMKey[2] = !(data[3] & G15_M3_LIGHT);

	// MRKey
	status.bMRKey = !(data[3] & G15_MR_LIGHT);

	delete[] data;

	return status;
}

void CLCDConnectionLogitech::SetMKeyLight(bool bM1, bool bM2, bool bM3, bool bMR)
{
	if (GetConnectionState() != CONNECTED ||
		m_pConnectedDevice->GetIndex() != LGLCD_DEVICE_BW) //m_lcdDeviceDesc.deviceFamilyId != LGLCD_DEVICE_FAMILY_KEYBOARD_G15)
		return;

	uint8_t *data = new uint8_t[m_HIDCapabilities.FeatureReportByteLength];
	data[0] = 0x02;
	data[1] = 0x04;
	data[2] = 0x00;

	if (!bM1)
		data[2] |= G15_M1_LIGHT;
	if (!bM2)
		data[2] |= G15_M2_LIGHT;
	if (!bM3)
		data[2] |= G15_M3_LIGHT;
	if (!bMR)
		data[2] |= G15_MR_LIGHT;

	data[3] = 0x00;

	HidD_SetFeature(m_hHIDDeviceHandle, data, m_HIDCapabilities.FeatureReportByteLength);
	delete[] data;
}

void CLCDConnectionLogitech::SetLCDBacklight(ELCDBrightness eBrightness)
{
	if (GetConnectionState() != CONNECTED ||
		m_pConnectedDevice->GetIndex() != LGLCD_DEVICE_BW) //m_lcdDeviceDesc.deviceFamilyId != LGLCD_DEVICE_FAMILY_KEYBOARD_G15)
		return;

	uint8_t *data = new uint8_t[m_HIDCapabilities.FeatureReportByteLength];

	data[0] = 0x02;
	data[1] = 0x02;
	data[2] = eBrightness;
	data[3] = 0x00;

	HidD_SetFeature(m_hHIDDeviceHandle, data, m_HIDCapabilities.FeatureReportByteLength);

	delete[] data;
}

void CLCDConnectionLogitech::SetKBDBacklight(EKBDBrightness eBrightness)
{
	if (GetConnectionState() != CONNECTED ||
		m_pConnectedDevice->GetIndex() != LGLCD_DEVICE_BW) //m_lcdDeviceDesc.deviceFamilyId != LGLCD_DEVICE_FAMILY_KEYBOARD_G15)
		return;

	uint8_t *data = new uint8_t[m_HIDCapabilities.FeatureReportByteLength];

	data[0] = 0x02;
	data[1] = 0x01;
	data[2] = eBrightness;
	data[3] = 0x00;

	HidD_SetFeature(m_hHIDDeviceHandle, data, m_HIDCapabilities.FeatureReportByteLength);

	delete[] data;
}

void CLCDConnectionLogitech::SetVolumeWheelHook(bool bEnable)
{
	if (bEnable == m_bVolumeWheelHook)
		return;
	m_bVolumeWheelHook = bEnable;

	if (bEnable)
		m_hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, CLCDConnectionLogitech::KeyboardHook, GetModuleHandle(nullptr), 0);
	else if (m_hKeyboardHook)
		UnhookWindowsHookEx(m_hKeyboardHook);
}

LRESULT CALLBACK CLCDConnectionLogitech::KeyboardHook(int Code, WPARAM wParam, LPARAM lParam)
{
	if (Code == HC_ACTION && wParam == WM_KEYDOWN) {
		KBDLLHOOKSTRUCT *key = reinterpret_cast<KBDLLHOOKSTRUCT *>(lParam);
		if (key->vkCode == VK_VOLUME_UP || key->vkCode == VK_VOLUME_DOWN) {
			if (m_pInstance->IsForeground()) {
				if (key->vkCode == VK_VOLUME_UP)
					CLCDOutputManager::GetInstance()->OnLCDButtonDown(LGLCDBUTTON_UP);
				else if (key->vkCode == VK_VOLUME_DOWN)
					CLCDOutputManager::GetInstance()->OnLCDButtonDown(LGLCDBUTTON_DOWN);
				return 1;
			}
		}
	}
	return CallNextHookEx(m_pInstance->m_hKeyboardHook, Code, wParam, lParam);
}