/*  This file is part of the KDE project.

Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

This library is free software: you can redistribute it and/or modify

it under the terms of the GNU Lesser General Public License as published by

the Free Software Foundation, either version 2.1 or 3 of the License.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License

along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef PHONON_MMF_VOLUMEOBSERVER_H

#define PHONON_MMF_VOLUMEOBSERVER_H

#include <QtGlobal>

QT_BEGIN_NAMESPACE

namespace Phonon

{

namespace MMF

{

/**

 * Interface used by AudioOutput to pass volume control commands

 * back along the audio path to the MediaObject.

 */

class VolumeObserver

{

public:

    virtual void volumeChanged(qreal volume) = 0;

};

}

}

QT_END_NAMESPACE

#endif