/*  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