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/* This file is part of the KDE project.
Copyright (C) 2012 Digia Plc 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_GSTREAMER_VOLUMEFADEREFFECT_H
#define Phonon_GSTREAMER_VOLUMEFADEREFFECT_H
#include "medianode.h"
#include "effect.h"
#include <phonon/effectinterface.h>
#include <phonon/effectparameter.h>
#include <phonon/volumefaderinterface.h>
#include <QtCore>
#include <gst/gst.h>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_PHONON_VOLUMEFADEREFFECT
namespace Phonon
{
namespace Gstreamer
{
class VolumeFaderEffect : public Effect, public VolumeFaderInterface
{
Q_OBJECT
Q_INTERFACES(Phonon::VolumeFaderInterface)
public:
VolumeFaderEffect(Backend *backend, QObject *parent = 0);
~VolumeFaderEffect();
GstElement* createEffectBin();
GstElement *audioElement() { return m_effectBin; }
bool event(QEvent *);
void updateFade();
// VolumeFaderInterface:
float volume() const;
void setVolume(float volume);
Phonon::VolumeFaderEffect::FadeCurve fadeCurve() const;
void setFadeCurve(Phonon::VolumeFaderEffect::FadeCurve fadeCurve);
void fadeTo(float volume, int fadeTime);
Phonon::VolumeFaderEffect::FadeCurve m_fadeCurve;
int m_fadeTimer;
int m_fadeDuration;
float m_fadeFromVolume;
float m_fadeToVolume;
QTime m_fadeStartTime;
};
}} //namespace Phonon::Gstreamer
#endif //QT_NO_PHONON_VOLUMEFADEREFFECT
QT_END_NAMESPACE
#endif // Phonon_GSTREAMER_VOLUMEFADEREFFECT_H
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