source: trunk/src/3rdparty/phonon/qt7/audioeffects.h

/*  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_QT7_AUDIOEFFECTS_H
#define Phonon_QT7_AUDIOEFFECTS_H

#include <QtCore/QVariant>
#include <QtCore/QHash>
#include <phonon/effectinterface.h>
#include <phonon/effectparameter.h>
#include "medianode.h"
#include "audionode.h"

QT_BEGIN_NAMESPACE

namespace Phonon
{
namespace QT7
{
    class AudioEffectAudioNode : public AudioNode
    {
        public:
            AudioEffectAudioNode(int effectType);
            int m_effectType;

            ComponentDescription getAudioNodeDescription() const;
            void initializeAudioUnit();

            QVariant parameterValue(const Phonon::EffectParameter &value) const;
            void setParameterValue(const Phonon::EffectParameter &parameter, const QVariant &newValue);

        private:
            QHash<int, float> m_alteredParameters;
    };

///////////////////////////////////////////////////////////////////////

    class AudioEffect : public MediaNode, Phonon::EffectInterface
    {
        Q_OBJECT
        Q_INTERFACES(Phonon::EffectInterface)

        public:
            AudioEffect(int effectType, QObject *parent = 0);
            AudioEffectAudioNode *m_audioNode;

            QString name();
            QString description();
         
            // EffectInterface:
            virtual QList<Phonon::EffectParameter> parameters() const;
            virtual QVariant parameterValue(const Phonon::EffectParameter &parameter) const;
            virtual void setParameterValue(const Phonon::EffectParameter &parameter, const QVariant &newValue);

            static QList<int> effectList();

        private:
            Phonon::EffectParameter createParameter(const AudioUnit &audioUnit, const AudioUnitParameterID &id) const;
    };


}} //namespace Phonon::QT7

QT_END_NAMESPACE

#endif // Phonon_QT7_AUDIOEFFECTS_H