/*  This file is part of the KDE project.+
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    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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+
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    This library is free software: you can redistribute it and/or modify+
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    it under the terms of the GNU Lesser General Public License as published by+
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    the Free Software Foundation, either version 2.1 or 3 of the License.+
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+
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    This library is distributed in the hope that it will be useful,+
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    but WITHOUT ANY WARRANTY; without even the implied warranty of+
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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    GNU Lesser General Public License for more details.+
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+
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    You should have received a copy of the GNU Lesser General Public License+
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    along with this library.  If not, see <http://www.gnu.org/licenses/>.+
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*/+
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+
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#ifndef Phonon_QT7_AUDIOMIXER_H+
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#define Phonon_QT7_AUDIOMIXER_H+
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+
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#include <QtCore/QObject>+
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#include <QtCore/QTime>+
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#include <QtCore/QEvent>+
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#include <phonon/effectinterface.h>+
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#include <phonon/effectparameter.h>+
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#include <phonon/volumefaderinterface.h>+
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#include "medianode.h"+
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#include "audionode.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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namespace Phonon+
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{+
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namespace QT7+
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{+
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    class AudioMixerAudioNode : public AudioNode+
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    {+
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        public:+
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            AudioMixerAudioNode();+
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            void setVolume(float volume, int bus = 0);+
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            float volume(int bus = 0);+
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+
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        protected:+
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            ComponentDescription getAudioNodeDescription() const;+
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            void initializeAudioUnit();+
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+
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        private:+
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            friend class AudioMixer;+
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            int m_numberOfBusses;+
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            float m_volume;+
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    };+
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+
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    class AudioMixer : public MediaNode, Phonon::EffectInterface, Phonon::VolumeFaderInterface+
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    {+
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        Q_OBJECT+
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        Q_INTERFACES(Phonon::EffectInterface Phonon::VolumeFaderInterface)+
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+
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        public:+
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            AudioMixer(QObject *parent = 0);+
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            ~AudioMixer();+
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            AudioMixerAudioNode *m_audioNode;+
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            Phonon::VolumeFaderEffect::FadeCurve m_fadeCurve;+
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+
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            int m_fadeTimer;+
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            int m_fadeDuration;+
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            float m_fadeToVolume;+
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            float m_fadeFromVolume;+
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            QTime m_fadeStartTime;+
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+
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            // EffectInterface:+
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            QList<Phonon::EffectParameter> parameters() const;+
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            QVariant parameterValue(const Phonon::EffectParameter &parameter) const;+
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            void setParameterValue(const Phonon::EffectParameter &parameter, const QVariant &newValue);+
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+
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            // VolumeFaderInterface:+
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            float volume() const;+
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            void setVolume(float volume);+
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            Phonon::VolumeFaderEffect::FadeCurve fadeCurve() const;+
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            void setFadeCurve(Phonon::VolumeFaderEffect::FadeCurve fadeCurve);+
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            void fadeTo(float volume, int fadeTime);+
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            void updateFade();+
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+
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        protected:+
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            bool event(QEvent *event);+
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    };+
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+
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}} //namespace Phonon::QT7+
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+
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QT_END_NAMESPACE+
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+
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#endif // Phonon_QT7_AUDIOMIXER_H+
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