// Copyright (c) 2010 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:

// Guest video driver - request handler extension (a.k.a. Command Scheduler extension)

// This allows the sgdevice.ldd to make calls into the Command Scheduler

//

#ifndef ReqHandlerExtension_H

#define ReqHandlerExtension_H

#include <kernel/kernel.h>

#include <sgresource/sgcommon.h>//TSgImageMetaData

#include "virtualvideotracing.h"

class MReqHandlerCallback

    {

public:

	virtual void CreateSgImagePbuffer( const TSgImageMetaData& aInfo, TRequestStatus* aStatus, DThread* aThread ) = 0;

	virtual void CreateSgImageVGImage( const TSgImageMetaData& aInfo, TRequestStatus* aStatus, DThread* aThread ) = 0;

	virtual TInt DestroySgImage( const TUint64 aId ) = 0;    

    };

NONSHARABLE_CLASS(DReqHandlerExtensionImpl): public DBase

	{

public:

	TInt Construct();

	void CreateSgImagePbuffer( const TSgImageMetaData& aInfo, TRequestStatus* aStatus, DThread* aThread );

	void CreateSgImageVGImage( const TSgImageMetaData& aInfo, TRequestStatus* aStatus, DThread* aThread );

	TInt DestroySgImage( const TUint64 aId );

	TInt SetReqHandler( MReqHandlerCallback* aHandler );

private:

	DMutex* iMutex;

	MReqHandlerCallback* iCallBackHandler;//not owned

	};

class ReqHandlerExtension

	{

public:

	//SgImage Creation and Destruction commands:

	IMPORT_C static TInt CreateSgImagePbuffer( const TSgImageMetaData& aInfo );

	IMPORT_C static TInt CreateSgImageVGImage( const TSgImageMetaData& aInfo );

	IMPORT_C static TInt DestroySgImage( const TUint64 aId );

	IMPORT_C static TInt SetReqHandler( MReqHandlerCallback* aHandler );

	//other functions to be added

	};

//#include <sgresource/ReqHandlerExtension.inl>

#endif // ReqHandlerExtension_H