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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

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

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 /**

    17  @file

    18  @internalComponent

    19 */

    20 

    21 #ifndef SGDRIVER_H

    22 #define SGDRIVER_H

    23 

    24 #include <e32std.h>

    25 #include <pls.h>

    26 

    27 

    28 class MSgDriverAdapter;

    29 

    30 /**

    31 @internalComponent

    32 

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

    34 */

    35 NONSHARABLE_CLASS(XSgDriverPls)

    36 	{

    37 public:

    38 	/**

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

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

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

    42 	*/

    43 	XSgDriverPls();

    44 public:

    45 	/**

    46 	Result code of the constructor.

    47 	*/

    48 	TInt iError;

    49 	/**

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

    51 	*/

    52 	RMutex iMutex;

    53 #ifdef __WINS__

    54 	/**

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

    56 	*/

    57 	RLibrary iLibrary;

    58 #endif

    59 	/**

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

    61 	a corresponding call to SgDriver::Close().

    62 	*/

    63 	TInt iOpenCount;

    64 	/**

    65 	Pointer to the Graphics Resource Adapter singleton in this process.

    66 	*/

    67 	MSgDriverAdapter* iDriver;

    68 	};

    69 

    70 

    71 /**

    72 @internalComponent

    73 

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

    75 */

    76 const TUid KSgResourceLibraryUid = {0x10285A70};

    77 

    78 

    79 /**

    80 @internalComponent

    81 

    82 The global data in the Graphics Resource DLL.

    83 */

    84 #ifdef __WINS__

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

    86 #else

    87 extern XSgDriverPls gPls;

    88 #endif

    89 

    90 

    91 #endif // SGDRIVER_H