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0001 /* This file is part of the KDE project. 0002 * 0003 * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). 0004 * Copyright (C) 2013 Martin Sandsmark <martin.sandsmark@kde.org> 0005 * 0006 * This library is free software: you can redistribute it and/or modify 0007 * it under the terms of the GNU Lesser General Public License as published by 0008 * the Free Software Foundation, either version 2.1 or 3 of the License. 0009 * 0010 * This library is distributed in the hope that it will be useful, 0011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 0012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0013 * GNU Lesser General Public License for more details. 0014 * 0015 * You should have received a copy of the GNU Lesser General Public License 0016 * along with this library. If not, see <http://www.gnu.org/licenses/>. 0017 */ 0018 0019 #ifndef PHONON_VLC_VOLUMEFADEREFFECT_H 0020 #define PHONON_VLC_VOLUMEFADEREFFECT_H 0021 0022 #include <phonon/volumefaderinterface.h> 0023 0024 #include <QtCore/QTime> 0025 #include <QtCore/QPointer> 0026 0027 #include "sinknode.h" 0028 0029 class QTimeLine; 0030 0031 namespace Phonon { 0032 0033 class MediaObject; 0034 0035 namespace VLC { 0036 0037 class VolumeFaderEffect : public QObject, public SinkNode, public VolumeFaderInterface 0038 { 0039 Q_OBJECT 0040 Q_INTERFACES(Phonon::VolumeFaderInterface) 0041 0042 public: 0043 explicit VolumeFaderEffect(QObject *parent = nullptr); 0044 ~VolumeFaderEffect() override; 0045 0046 // VolumeFaderInterface: 0047 float volume() const override; 0048 Phonon::VolumeFaderEffect::FadeCurve fadeCurve() const override; 0049 void setFadeCurve(Phonon::VolumeFaderEffect::FadeCurve fadeCurve) override; 0050 void fadeTo(float volume, int fadeTime) override; 0051 void setVolume(float v) override; 0052 QPointer<MediaObject> mediaObject() { return m_mediaObject; } 0053 0054 private Q_SLOTS: 0055 void slotSetVolume(qreal v); 0056 0057 private: 0058 void abortFade(); 0059 inline void setVolumeInternal(float v); 0060 0061 Phonon::VolumeFaderEffect::FadeCurve m_fadeCurve; 0062 float m_fadeFromVolume; 0063 float m_fadeToVolume; 0064 QTimeLine *m_fadeTimeline; 0065 0066 }; 0067 0068 } // namespace VLC 0069 } // namespace Phonon 0070 0071 #endif // PHONON_VLC_VOLUMEFADEREFFECT_H