1 /*  This file is part of the KDE project.

     2 

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

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

     5 

     6     This library is free software: you can redistribute it and/or modify

     7     it under the terms of the GNU Lesser General Public License as published by

     8     the Free Software Foundation, either version 2.1 or 3 of the License.

     9 

    10     This library is distributed in the hope that it will be useful,

    11     but WITHOUT ANY WARRANTY; without even the implied warranty of

    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13     GNU Lesser General Public License for more details.

    14 

    15     You should have received a copy of the GNU Lesser General Public License

    16     along with this library.  If not, see <http://www.gnu.org/licenses/>.

    17 */

    18 

    19 #ifndef Phonon_GSTREAMER_AUDIOOUTPUT_H

    20 #define Phonon_GSTREAMER_AUDIOOUTPUT_H

    21 

    22 #include "common.h"

    23 #include "medianode.h"

    24 

    25 #include <phonon/audiooutputinterface.h>

    26 #include <phonon/phononnamespace.h>

    27 

    28 #include <QtCore/QFile>

    29 

    30 #include <gst/gst.h>

    31 

    32 QT_BEGIN_NAMESPACE

    33 

    34 namespace Phonon

    35 {

    36 namespace Gstreamer

    37 {

    38 class AudioOutput : public QObject, public AudioOutputInterface, public MediaNode

    39 {

    40     Q_OBJECT

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

    42 public:

    43     AudioOutput(Backend *backend, QObject *parent);

    44     ~AudioOutput();

    45 

    46     qreal volume() const;

    47     int outputDevice() const;

    48     void setVolume(qreal newVolume);

    49     bool setOutputDevice(int newDevice);

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

    51     bool setOutputDevice(const AudioOutputDevice &newDevice);

    52 #endif

    53 

    54 public:

    55     GstElement *audioElement()

    56     {

    57         Q_ASSERT(m_audioBin);

    58         return m_audioBin;

    59     }

    60 

    61     void mediaNodeEvent(const MediaNodeEvent *event);

    62 

    63 Q_SIGNALS:

    64     void volumeChanged(qreal newVolume);

    65     void audioDeviceFailed();

    66 

    67 private:

    68 

    69     qreal m_volumeLevel;

    70     int m_device;

    71 

    72     GstElement *m_volumeElement;

    73     GstElement *m_audioBin;

    74     GstElement *m_audioSink;

    75     GstElement *m_conv;

    76 };

    77 }

    78 } //namespace Phonon::Gstreamer

    79 

    80 QT_END_NAMESPACE

    81 

    82 #endif // Phonon_GSTREAMER_AUDIOOUTPUT_H