1 // Copyright (c) 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 // Graphics Resource - kernel extension internal functionality

    15 //

    16 

    17 #ifndef SGEXTENSIONIMPL_H

    18 #define SGEXTENSIONIMPL_H

    19 

    20 #include <sgresource/sgextension.h>

    21 

    22 NONSHARABLE_CLASS(DSgExtensionImpl): public DBase

    23 	{

    24 public:

    25 	TInt Construct();

    26 	TInt CreateResource(TUint32 aAttribs, const TDesC8& aMetaData, TInt aDataSize, DSgResource*& aResource);

    27 	TInt FindAndOpenResource(TUint64 aId, DSgResource*& aResource);

    28 	void DeleteResource(DSgResource* aResource);

    29 	TInt GlobalResourceCount() const;

    30 	TInt GlobalGraphicsMemoryUsed() const;

    31 private:

    32 	DMutex* iMutex;

    33 	TUint64 iLastResourceId;

    34 	RPointerArray<DSgResource> iResources;

    35 	};

    36 

    37 NONSHARABLE_CLASS(DSgResourceImpl): public DSgResource

    38 	{

    39 public:

    40 	DSgResourceImpl(DSgExtensionImpl& aExtensionImpl, TUint64 aId, TUint32 aAttribs,

    41 	                const TDesC8& aMetaData, DChunk* aDataChunk, TInt aDataSize);

    42 	// From DSgResource

    43 	TInt Open();

    44 	void Close();

    45 	TUint64 Id() const;

    46 	TUint32 Attributes() const;

    47 	TInt GetMetaData(TDes8& aMetaData) const;

    48 	DChunk* DataChunk() const;

    49 	TInt DataSize() const;

    50 private:

    51 	~DSgResourceImpl();

    52 private:

    53 	DSgExtensionImpl& iExtensionImpl;

    54 	TInt iRefCount;

    55 	TUint64 iId;

    56 	TUint32 iAttributes;

    57 	TInt iMetaDataSize;

    58 	DChunk* iDataChunk;

    59 	TInt iDataSize;

    60 	};

    61 

    62 #endif // SGEXTENSIONIMPL_H