// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 /**

  @file

  @internalComponent

 */

 #ifndef SGDRIVER_H

 #define SGDRIVER_H

 #include <e32std.h>

 #include <pls.h>

 class MSgDriverAdapter;

 /**

 @internalComponent

 This class encapsulates the global data in the Graphics Resource DLL.

 */

 NONSHARABLE_CLASS(XSgDriverPls)

 	{

 public:

 	/**

 	Default constructor, called when the Graphics Resource DLL is loaded into a

 	process. Creates the mutex used to synchronise access to the global data. The

 	mutex will be automatically destroyed by the kernel on process termination.

 	*/

 	XSgDriverPls();

 public:

 	/**

 	Result code of the constructor.

 	*/

 	TInt iError;

 	/**

 	Handle to the mutex used to synchronise access to the global data.

 	*/

 	RMutex iMutex;

 #ifdef __WINS__

 	/**

 	Handle to the Graphics Resource Adapter DLL owned by this process.

 	*/

 	RLibrary iLibrary;

 #endif

 	/**

 	Number of times SgDriver::Open() has been called from this process without

 	a corresponding call to SgDriver::Close().

 	*/

 	TInt iOpenCount;

 	/**

 	Pointer to the Graphics Resource Adapter singleton in this process.

 	*/

 	MSgDriverAdapter* iDriver;

 	};

 /**

 @internalComponent

 The UID3 value in the compound identifier of the Graphics Resource DLL.

 */

 const TUid KSgResourceLibraryUid = {0x10285A70};

 /**

 @internalComponent

 The global data in the Graphics Resource DLL.

 */

 #ifdef __WINS__

 #define gPls (*Pls<XSgDriverPls>(KSgResourceLibraryUid))

 #else

 extern XSgDriverPls gPls;

 #endif

 #endif // SGDRIVER_H