/*

* Copyright (c) 2003 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:  Contains implementation of the CDosServerObserver class. which is the 

*                       notification interface to the DOS Server.

*

*/

#ifndef __DOSSERVEROBSERVER_H

#define __DOSSERVEROBSERVER_H

//  INCLUDES

#include <DosSvrServices.h>

#include "fmradioengineradiosettings.h"

class CRadioEngine;

// CLASS DECLARATION

/**

* This class implements theis the notification interface to the DOS Server.

*/

class CDosServerObserver : public CDosEventListenerBase

    {

	public:

		virtual ~CDosServerObserver();

		/**

		* Two-phased class constructor.

		* @param aEngine - pointer to the CRadioEngine instance (used for callbacks)

		* @param aRadioSettings - pointer to the CRadioSettings class

		* @return pointer to CDosServerObserver class instance

		*/

		static CDosServerObserver* NewL(CRadioEngine* aEngine, TRadioSettings* aRadioSettings);

        /**

        * Sets the current audio routing.

		* @param aAudioOutput Audio output to be used

		* @return Symbian error code

        */

        TInt SetAudioRouting(CRadioEngine::TFMRadioAudioOutput aAudioOutput);

		/**

		* From CDosEventListenerBase 

		* It notifies about a headset button state change

		* @param aState State of button

		*/

		void HeadsetButtonChangedL(EPSButtonState aState);

	private:

		/**

		* Default class constructor.

		* @param aEngine - pointer to the CRadioEngine instance (used for callbacks)

		* @param aRadioSettings - pointer to the CRadioSettings class

		*/

		CDosServerObserver(CRadioEngine* aEngine, TRadioSettings* aRadioSettings);

		/**

		* Second phase class constructor.

		*/

		void ConstructL();

	private:

		CRadioEngine *iEngine;

		TRadioSettings *iRadioSettings;

        RDosAudio iDosAudio;

    };

#endif  // __DOSSERVEROBSERVER_H

// End of file