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

     2 

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

     4 

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

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

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

     8 

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

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

    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12     GNU Lesser General Public License for more details.

    13 

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

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

    16 */

    17 

    18 #ifndef Phonon_GSTREAMER_MEDIANODE_H

    19 #define Phonon_GSTREAMER_MEDIANODE_H

    20 

    21 #include "common.h"

    22 #include "medianodeevent.h"

    23 

    24 #include <QtCore/QObject>

    25 #include <QtCore/QList>

    26 #include <QtCore/QSize>

    27 

    28 #include <gst/gst.h>

    29 

    30 QT_BEGIN_NAMESPACE

    31 

    32 namespace Phonon {

    33 namespace Gstreamer {

    34 

    35 class Message;

    36 class MediaObject;

    37 class Backend;

    38 

    39 class MediaNode {

    40 public:

    41     enum NodeDescriptionEnum {

    42         AudioSource     = 0x1,

    43         AudioSink       = 0x2,

    44         VideoSource     = 0x4,

    45         VideoSink       = 0x8

    46     };

    47     Q_DECLARE_FLAGS(NodeDescription, NodeDescriptionEnum)

    48 

    49     MediaNode(Backend *backend, NodeDescription description);

    50 

    51     virtual ~MediaNode();

    52 

    53     bool connectNode(QObject *other);

    54     bool disconnectNode(QObject *other);

    55 

    56     bool buildGraph();

    57     bool breakGraph();

    58 

    59     virtual bool link();

    60     virtual bool unlink();

    61 

    62     NodeDescription description() const {

    63         return m_description;

    64     }

    65 

    66     bool isValid() {

    67         return m_isValid;

    68     }

    69 

    70     MediaObject *root() {

    71         return m_root;

    72     }

    73 

    74     void setRoot(MediaObject *mediaObject) {

    75         m_root = mediaObject;

    76     }

    77 

    78     void notify(const MediaNodeEvent *event);

    79 

    80     Backend *backend() {

    81         return m_backend;

    82     }

    83 

    84     const QString &name() {

    85         return m_name;

    86     }

    87 

    88     virtual GstElement *audioElement() {

    89         return m_audioTee;

    90     }

    91 

    92     virtual GstElement *videoElement() {

    93         return m_videoTee;

    94     }

    95 

    96 protected:

    97     bool connectToFakeSink(GstElement *tee, GstElement *sink, GstElement *bin);

    98     bool releaseFakeSinkIfConnected(GstElement *tee, GstElement *sink, GstElement *bin);

    99     bool linkMediaNodeList(QList<QObject *> &list, GstElement *bin, GstElement *tee, GstElement *sink, GstElement *src);

   100 

   101     virtual void mediaNodeEvent(const MediaNodeEvent *event);

   102     QList<QObject *> m_audioSinkList;

   103     QList<QObject *> m_videoSinkList;

   104 

   105     bool m_isValid;

   106     MediaObject *m_root;

   107     GstElement *m_audioTee;

   108     GstElement *m_videoTee;

   109     GstElement *m_fakeAudioSink;

   110     GstElement *m_fakeVideoSink;

   111    Backend *m_backend;

   112     QString m_name;

   113  

   114 private:

   115     bool addOutput(MediaNode *, GstElement *tee);

   116     NodeDescription m_description;

   117 };

   118 

   119 Q_DECLARE_OPERATORS_FOR_FLAGS(MediaNode::NodeDescription)

   120 

   121 } // ns Gstreamer

   122 } // ns Phonon

   123 

   124 Q_DECLARE_INTERFACE(Phonon::Gstreamer::MediaNode, "org.phonon.gstreamer.MediaNode")

   125 

   126 QT_END_NAMESPACE

   127 

   128 #endif // Phonon_GSTREAMER_MEDIANODE_H