| /* 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_AUDIOOUTPUT_H |
| #define PHONON_MMF_AUDIOOUTPUT_H |
| |
| #include <QHash> |
| |
| #include "mmf_medianode.h" |
| #include <phonon/audiooutputinterface.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Phonon |
| { |
| namespace MMF |
| { |
| class Backend; |
| |
| /** |
| * @short AudioOutputInterface implementation for MMF. |
| * |
| * Forwards volume commands to the MediaObject instance, |
| * which is provided by the backend when MediaNode objects are |
| * connected. |
| * |
| * \section volume Volume |
| * |
| * Phonon's concept on volume is from 0.0 to 1.0, and from 1< it does |
| * voltage multiplication. CDrmPlayerUtility goes from 1 to |
| * CDrmPlayerUtility::MaxVolume(). We apply some basic math to convert |
| * between the two. |
| * |
| * @author Frans Englich<frans.englich@nokia.com> |
| */ |
| class AudioOutput : public MediaNode |
| , public AudioOutputInterface |
| { |
| Q_OBJECT |
| Q_INTERFACES(Phonon::AudioOutputInterface) |
| |
| public: |
| AudioOutput(Backend *backend, QObject *parent); |
| virtual qreal volume() const; |
| virtual void setVolume(qreal volume); |
| |
| virtual int outputDevice() const; |
| |
| /** |
| * Has no effect. |
| */ |
| virtual bool setOutputDevice(int); |
| |
| static QHash<QByteArray, QVariant> audioOutputDescription(int index); |
| |
| enum Constants |
| { |
| AudioOutputDeviceID = 0 |
| }; |
| |
| protected: |
| // MediaNode |
| void connectMediaObject(MediaObject *mediaObject); |
| void disconnectMediaObject(MediaObject *mediaObject); |
| |
| Q_SIGNALS: |
| void volumeChanged(qreal volume); |
| void audioDeviceFailed(); |
| |
| private: |
| qreal m_volume; |
| |
| }; |
| } |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |