/*  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_AUDIOEQUALIZER_H

#define PHONON_MMF_AUDIOEQUALIZER_H

#include "abstractaudioeffect.h"

class CAudioEqualizer;

QT_BEGIN_NAMESPACE

namespace Phonon

{

namespace MMF

{

/**

 * @short A classic equalizer.

 *

 * The equalizer has a number of bands, and each band has a frequency, and a

 * volume. With Phonon's API, this is modeled such that each band is one

 * Phonon::EffectParameter, where Phonon::EffectParameter::id() is the band

 * number, and the setting is the volume level.

 */

class AudioEqualizer : public AbstractAudioEffect

{

    Q_OBJECT

public:

    AudioEqualizer(QObject *parent, const QList<EffectParameter> &parameters);

    // Static interface required by EffectFactory

    static const char* description();

    static bool getParameters(CMdaAudioOutputStream *stream,

        QList<EffectParameter>& parameters);

protected:

    // AbstractAudioEffect

    virtual void createEffect(AudioPlayer::NativePlayer *player);

    virtual int effectParameterChanged(const EffectParameter &param,

                                       const QVariant &value);

private:

    CAudioEqualizer *concreteEffect();

};

}

}

QT_END_NAMESPACE

#endif