/*

* Copyright (c) 2006-2008 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:  Provides speaker functionality

*

*/

#ifndef CSPSPEAKER_H

#define CSPSPEAKER_H

#include "cspdevsound.h"

class MCSPDevSoundObserver;

/**

 *  Provides speaker functionality.

 *

 */

NONSHARABLE_CLASS( CSPSpeaker ): public CSPDevSound

    {

public:

    static CSPSpeaker* NewL( MCSPDevSoundObserver& aObserver );

    virtual ~CSPSpeaker();

    /** 

     * Sets volume.

     * @param aVolume Volume.     

     */

    void SetVolume( TInt aVolume );

    /**

     * Gets volume.

     * @return Current volume.

     */

    TInt Volume();

// from base class MDevSoundObserver

    /**

     * From MDevSoundObserver.

     * Indication from devsound that stream (speaker) has been activated

     * successfully.

     */

    void BufferToBeFilled( CMMFBuffer* /*aBuffer*/ );

    /**

     * From MDevSoundObserver.

     * Indication from devsound that activation of stream( speaker)

     * failed.

     */

    void PlayError( TInt aErrorCode );

private:

    /**

     * From CSPDevSound.

     * Tries to activate the mic stream.

     */

    void DoActivateL();

protected:

    CSPSpeaker( MCSPDevSoundObserver& aObserver );

    void ConstructL();

    };

#endif // CSPSPEAKER_H