/*

* Copyright (c) 2002-2004 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:  Observer interface for audio player.

*

*/

#ifndef MPHONEAUDIOPLAYEROBSERVER_H

#define MPHONEAUDIOPLAYEROBSERVER_H

// INCLUDES

#include "phoneconstants.h"

// CLASS DECLARATION

/**

*  Observer interface for audio player.

*

* @since 1.0

*/

class MPhoneAudioPlayerObserver

    {

    public:  // Constructors and destructor

        // Enumerates different failures.

        //

        // EAudioPlayerInitializingFailure - failure in initialising

        // EAudioPlayerPlayingFailure - failure during playing

        enum TPhoneAudioPlayerErrorEvent

            {

            EAudioPlayerInitializingFailure,

            EAudioPlayerPlayingFailure

            };

        /**

        * Observe the error.

        * @param aEvent the error event happend in initializing or playing.

        * @param aError The error code return by audio server. Observer can 

        *               handle  these two error code for recoverable 

        *               and unrecoverable errors.

        * @param aId Indicate which audio player is outof working.

        */

        virtual void HandleAudioPlayerError( 

            TPhoneAudioPlayerErrorEvent aEvent,

            TInt aError, 

            TInt aId = KPhoneAudioPlayerNotSpecified ) = 0;

        /**

        * This function is called when audio player initialization complete.

        * @param aId The id of the audio player.

        */

        virtual void HandleAudioPlayerInitComplete(

            TInt aId = KPhoneAudioPlayerNotSpecified ) = 0;

        /**

        * This funciton is called after the playing complete successfully.

        * @param aId The id of the audio player.

        */

        virtual void HandlePlayingComplete( 

            TInt aId = KPhoneAudioPlayerNotSpecified ) = 0;

    };

#endif      // MPHONEAUDIOPLAYEROBSERVER_H   

// End of File