/*

* Copyright (c) 2008 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:

*

*/

#ifndef __NGAPOSTPROCSESSIONMANAGER_H__

#define __NGAPOSTPROCSESSIONMANAGER_H__

#include <graphics/surface.h> //TSurfaceId

#include <graphics/surfacemanager.h> //RSurfaceManager

#include <e32std.h>

#include <e32base.h>

class RSurfaceUpdateSession;

class MNGAPostProcSessionManagerObserver;

class CNGAPostProcNotifier;

class CNGAPostProcSessionManager

{

public: 

    //  === Constructors and destructor ===

    /**

    * Two-phased constructor.   

    * @return pointer to an instance of CNGAPostProcSessionManager

    */

    static CNGAPostProcSessionManager* NewL();

    /**

    * Destructor.

    */

    ~CNGAPostProcSessionManager();

public: 

    /**

    submits buffer to GCE for displaying.

    @param  "aBufId"   "ID of the buffer that needs to be displayed."

    @pre    "This method can only be called before the hwdevice has been initialized with Initialize()."

    */

    void PostPicture(const TSurfaceId& aSurfaceId, TInt aBufId, TInt aNumOfBuf, TBool aNotifyRequired);

    /**

    Sets the device output format.

    */

    void CancelUpdate();

    /**

	Removes display from the system, if it is already existing. 

    @param  "aDisplayId"  "ID of the display that needs to be removed from the system"

    */

    void HandleBufferRelease(TInt aBufId, TInt aStatus);

    /**

	Removes display from the system, if it is already existing. 

    @param  "aDisplayId"  "ID of the display that needs to be removed from the system"

    */

    void SetObserver(MNGAPostProcSessionManagerObserver& aObserver);

protected:

	CNGAPostProcSessionManager();

    /**

     *  Symbian 2nd phase constructor .

     */

    void ConstructL();

private: 

    RSurfaceUpdateSession*      			iSurfaceUpdateSession;

    MNGAPostProcSessionManagerObserver*		iObserver;

    RArray<CNGAPostProcNotifier*>			iAOList;

};    

#endif //__NGAPOSTPROCSESSIONMANAGER_H__