// Copyright (c) 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:

// Graphics Resource - kernel extension

//

#ifndef SGEXTENSION_H

#define SGEXTENSION_H

#include <kernel/kernel.h>

#include <sgresource/sgcommon.h>

class DSgResource: public DBase

	{

public:

	virtual TInt Open() = 0;

	virtual void Close() = 0;

	virtual TUint64 Id() const = 0;

	virtual TUint32 Attributes() const = 0;

	virtual TInt GetMetaData(TDes8& aMetaData) const = 0;

	virtual DChunk* DataChunk() const = 0;

	virtual TInt DataSize() const = 0;

	inline static TInt Compare(const TUint64* aId, const DSgResource& aResource);

	inline static TInt Compare(const DSgResource& aResource1, const DSgResource& aResource2);

	};

class SgExtension

	{

public:

	IMPORT_C static TVersion Version();

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

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

	IMPORT_C static TInt GlobalResourceCount();

	IMPORT_C static TInt GlobalGraphicsMemoryUsed();

	};

#include <sgresource/sgextension.inl>

#endif // SGEXTENSION_H