/*  This file is part of the KDE project.

    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

    Copyright (C) 2008 Matthias Kretz <kretz@kde.org>

    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_AUDIOOUTPUT_H

#define Phonon_GSTREAMER_AUDIOOUTPUT_H

#include "common.h"

#include "medianode.h"

#include <phonon/audiooutputinterface.h>

#include <phonon/phononnamespace.h>

#include <QtCore/QFile>

#include <gst/gst.h>

QT_BEGIN_NAMESPACE

namespace Phonon

{

namespace Gstreamer

{

class AudioOutput : public QObject, public AudioOutputInterface, public MediaNode

{

    Q_OBJECT

    Q_INTERFACES(Phonon::AudioOutputInterface Phonon::Gstreamer::MediaNode)

public:

    AudioOutput(Backend *backend, QObject *parent);

    ~AudioOutput();

    qreal volume() const;

    int outputDevice() const;

    void setVolume(qreal newVolume);

    bool setOutputDevice(int newDevice);

#if (PHONON_VERSION >= PHONON_VERSION_CHECK(4, 2, 0))

    bool setOutputDevice(const AudioOutputDevice &newDevice);

#endif

public:

    GstElement *audioElement()

    {

        Q_ASSERT(m_audioBin);

        return m_audioBin;

    }

    void mediaNodeEvent(const MediaNodeEvent *event);

Q_SIGNALS:

    void volumeChanged(qreal newVolume);

    void audioDeviceFailed();

private:

    qreal m_volumeLevel;

    int m_device;

    GstElement *m_volumeElement;

    GstElement *m_audioBin;

    GstElement *m_audioSink;

    GstElement *m_conv;

};

}

} //namespace Phonon::Gstreamer

QT_END_NAMESPACE

#endif // Phonon_GSTREAMER_AUDIOOUTPUT_H