1 /*  This file is part of the KDE project

     2     Copyright (C) 2006 Matthias Kretz <kretz@kde.org>

     3     Copyright (C) 2009 Martin Sandsmark <sandsmark@samfundet.no>

     4 

     5     This library is free software; you can redistribute it and/or

     6     modify it under the terms of the GNU Lesser General Public

     7     License as published by the Free Software Foundation; either

     8     version 2.1 of the License, or (at your option) version 3, or any

     9     later version accepted by the membership of KDE e.V. (or its

    10     successor approved by the membership of KDE e.V.), Nokia Corporation

    11     (or its successors, if any) and the KDE Free Qt Foundation, which shall

    12     act as a proxy defined in Section 6 of version 3 of the license.

    13 

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

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

    16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    17     Lesser General Public License for more details.

    18 

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

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

    21 */

    22 

    23 #ifndef Phonon_GSTREAMER_AUDIODATAOUTPUT_H

    24 #define Phonon_GSTREAMER_AUDIODATAOUTPUT_H

    25 

    26 #include "abstractaudiooutput.h"

    27 #include "backend.h"

    28 #include "medianode.h"

    29 #include <phonon/audiodataoutput.h>

    30 #include <phonon/audiodataoutputinterface.h>

    31 

    32 QT_BEGIN_HEADER

    33 QT_BEGIN_NAMESPACE

    34 

    35 namespace Phonon

    36 {

    37 namespace Gstreamer

    38 {

    39     /**

    40      * \author Martin Sandsmark <sandsmark@samfundet.no>

    41      */

    42     class AudioDataOutput : public QObject,

    43                             public AudioDataOutputInterface,

    44                             public MediaNode

    45     {

    46         Q_OBJECT

    47         Q_INTERFACES(Phonon::AudioDataOutputInterface Phonon::Gstreamer::MediaNode)

    48 

    49         public:

    50             AudioDataOutput(Backend *, QObject *);

    51             ~AudioDataOutput();

    52 

    53         public Q_SLOTS:

    54             int dataSize() const;

    55             int sampleRate() const;

    56             void setDataSize(int size);

    57 

    58         public:

    59             /// callback function for handling new audio data

    60             static void processBuffer(GstPad*, GstBuffer*, gpointer);

    61 

    62             Phonon::AudioDataOutput* frontendObject() const { return m_frontend; }

    63             void setFrontendObject(Phonon::AudioDataOutput *frontend) { m_frontend = frontend; }

    64 

    65             GstElement *audioElement() { return m_queue; }

    66 

    67             void mediaNodeEvent(const MediaNodeEvent *event);

    68 

    69 

    70         signals:

    71             void dataReady(const QMap<Phonon::AudioDataOutput::Channel, QVector<qint16> > &data);

    72             void dataReady(const QMap<Phonon::AudioDataOutput::Channel, QVector<float> > &data);

    73             void endOfMedia(int remainingSamples);

    74 

    75         private:

    76             void convertAndEmit(const QVector<qint16>&, const QVector<qint16>&);

    77 

    78             GstElement *m_queue;

    79             int m_dataSize;

    80             QVector<qint16> m_pendingData;

    81             Phonon::AudioDataOutput *m_frontend;

    82             int m_channels;

    83     };

    84 }} //namespace Phonon::Gstreamer

    85 

    86 QT_END_NAMESPACE

    87 QT_END_HEADER

    88 

    89 // vim: sw=4 ts=4 tw=80

    90 #endif // Phonon_FAKE_AUDIODATAOUTPUT_H