/*

* Copyright (c) 2005-2006 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:  AudioOutput Proxy Active Object

*

*/

#ifndef CAUDIOOUTPUTPROXYAO_H

#define CAUDIOOUTPUTPROXYAO_H

//  INCLUDES

#include <e32base.h>

#include <mmf/common/mmfcontrollerframework.h>

#include <MCustomCommand.h>

// FORWARD DECLARATIONS

class CCustomCommandUtility;

class CAudioOutputProxy;

//class CAudioOutput;

// CLASS DECLARATION

/**

*  ?one_line_short_description.

*  ?other_description_lines

*/

class CAudioOutputProxyAO : public CActive

    {

    public:

        /**

        * Two-phased constructor.

        */

        static CAudioOutputProxyAO* NewL(CAudioOutput *aOutputProxy,MAudioOutputObserver& aObserver,MCustomCommand* aUtility);

        virtual ~CAudioOutputProxyAO();

		/**

        * ?member_description.

        * @since Series 60 3.0

        * @param aDestination Handle of the message handler

        * @param aFunction Message handler function

        * @return void

        */

		void SendAsyncMessage(const TMMFMessageDestinationPckg& aDestination,

	                                      TInt aFunction );

		/**

        * ?member_description.

        * @since Series 60 3.0

        * @param aFlag EFalse=unregistered, ETrue=registered

        * @return void

        */

		void SetRegisterFlag(TBool aFlag);

		/**

        * ?member_description.

        * @since Series 60 3.0

        * @param aObserver Observer Instance

        * @return void

        */

		void SetObserver(MAudioOutputObserver& aObserver);

    private:

        /**

        * C++ default constructor.

        */

        CAudioOutputProxyAO(CAudioOutput *aOutputProxy,MAudioOutputObserver& aObserver,MCustomCommand* aUtility);

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

		// Functions from base classes

        /**

        * From CActive ?member_description

        */

        void RunL();

        /**

        * From CActive ?member_description

        */

        void DoCancel();

	private:

		CAudioOutput*									iAudioOutputProxy;

		MCustomCommand*							iCustomCommandUtility;

		TPckgBuf<CAudioOutput::TAudioOutputPreference>	iCallbackData;

		MAudioOutputObserver*							iObserver;

		const TMMFMessageDestinationPckg*				iDestination;

		TInt											iFunction;

		TBool											iRegistered;

    };

#endif 		// CAUDIOOUTPUTPROXYAO_H