/*

 * Copyright (c) 2004 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:  Interface for loudness call back 

 *

 */

 #ifndef MLOUDNESSCALLBACK_H

 #define MLOUDNESSCALLBACK_H

 //  INCLUDES

 // CLASS DECLARATION

 /**

 *  Interface class to be implemented by objects that receives callbacks from Loudness Event Observer.

 *

 *  @since 3.0

 */

 class MLoudnessCallback

     {

     public:

         /**

         * Invoked by the Loudness Event Observer when the Loudness object changes state

         * @since 3.0

         * @param aBuffer Buffer containing the loudness data

         */

         virtual void LoudnessEvent( TDesC8& aDataPckg ) = 0;

     };

 #endif      // MLOUDNESSCALLBACK_H

 // End of File