/*

* 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:   Observer class for speaker functions

*

*/

#ifndef __AMSVOLOBSERVER_H

#define __AMSVOLOBSERVER_H

// CLASS DEFINITION

/**

 *  This class defines a generic observer interface.

 *  Indicates navipane volume and speaker selection.

 *

 *  @lib audiomessge.exe

 *  @since S60 v3.1

 */

class MAmsVolumeObserver

	{

	public: // new methods

		/**

		* Called to notify a change in the observed volume state.

		*/

		virtual void UpdateNaviVol( TInt aCurrentVolumeValue ) = 0;

        virtual TInt GetVolume()= 0;

		/**

		* Called to notify a change in the observed speaker state.

		*/

		virtual void SetSpeakerOutput( TBool aEarpiece ) = 0;

	};

#endif  // __AMSVOLOBSERVER_H