//

 // Copyright (C) 2014-2015 Stéphane Lenclud.

 //

 // This file is part of MiniDisplay.

 //

 // MiniDisplay is free software: you can redistribute it and/or modify

 // it under the terms of the GNU General Public License as published by

 // the Free Software Foundation, either version 3 of the License, or

 // (at your option) any later version.

 //

 // MiniDisplay is distributed in the hope that it will be useful,

 // but WITHOUT ANY WARRANTY; without even the implied warranty of

 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 // GNU General Public License for more details.

 //

 // You should have received a copy of the GNU General Public License

 // along with MiniDisplay.  If not, see <http://www.gnu.org/licenses/>.

 //

 #include "HidDevice.h"

 //

 // class HidDevice

 //

 HidDevice::HidDevice():iHidDevice(NULL)

     {

     Close();

     }

 /**

 */

 HidDevice::~HidDevice()

 	{

 	Close();

 	}

 /**

 */

 int HidDevice::Open(const char* aPath)

 	{

 	Close();

 	iHidDevice =  hid_open_path(aPath);

 	if (!iHidDevice)

 		{

 		//Fail to connect our device

 		return 0;

 		}

     FetchStrings();

 	return 1;

 	}

 /**

 See hidapi documentation.

 */

 int HidDevice::Open(unsigned short aVendorId, unsigned short aProductId, const wchar_t* aSerialNumber)

 	{

     Close();

 	iHidDevice = hid_open(aVendorId, aProductId, aSerialNumber);

 	if (!iHidDevice)

 		{

 		//Fail to connect our device

 		return 0;

 		}

     FetchStrings();

 	return 1;

 	}

 /**

 Close this HID device

 */

 void HidDevice::Close()

 	{

 	hid_close(iHidDevice); //No effect if device is null

 	iHidDevice=NULL;

     //

     memset(iVendor,0,sizeof(iVendor));

     memset(iProduct,0,sizeof(iProduct));

     memset(iSerialNumber,0,sizeof(iSerialNumber));

 	}

 /**

 */

 bool HidDevice::IsOpen()

     {

     return iHidDevice!=NULL;

     }

 /**

 */

 const wchar_t* HidDevice::Error()

 	{

 	return hid_error(iHidDevice);

 	}

 /**

 */

 int HidDevice::SetNonBlocking(int aNonBlocking)

 	{

 	//Success we are now connected to our HID device

 	//Set read operation as non blocking

 	return hid_set_nonblocking(iHidDevice, aNonBlocking);

 	}

 /**

 */

 wchar_t* HidDevice::Vendor()

     {

     return iVendor;

     }

 /**

 */

 wchar_t* HidDevice::Product()

     {

     return iProduct;

     }

 /**

 */

 wchar_t* HidDevice::SerialNumber()

     {

     return iSerialNumber;

     }

 /**

 */

 void HidDevice::FetchStrings()

     {

     hid_get_manufacturer_string(iHidDevice,iVendor,sizeof(iVendor));

     hid_get_product_string(iHidDevice,iProduct,sizeof(iProduct));

     hid_get_serial_number_string(iHidDevice,iSerialNumber,sizeof(iSerialNumber));

     }