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_QT7_AUDIOGRAPH_H

    19 #define Phonon_QT7_AUDIOGRAPH_H

    20 

    21 #include <AudioToolbox/AudioToolbox.h>

    22 #include <AudioUnit/AudioUnit.h>

    23 

    24 #include <QtCore/qnamespace.h>

    25 #include "audioconnection.h"

    26 #include "medianode.h"

    27 

    28 QT_BEGIN_NAMESPACE

    29 

    30 namespace Phonon

    31 {

    32 namespace QT7

    33 {

    34     class AudioGraph : public MediaNode

    35     {

    36         public:

    37             AudioGraph(MediaNode *root);

    38             virtual ~AudioGraph();

    39             AUGraph audioGraphRef();

    40             void startAllOverFromScratch();

    41 

    42             bool openAndInit();

    43             void start();

    44             void tryStartGraph();

    45             void stop();

    46             void prepare();

    47             void rebuildGraph();

    48             void update();

    49             bool isRunning();

    50             void setPaused(bool pause);

    51             bool graphCannotPlay();

    52             void rebuildGraphIfNeeded();

    53             void updateStreamSpecifications();

    54             void setStatusCannotPlay();

    55             MediaNode *root();

    56             void notify(const MediaNodeEvent *event, bool propagate = true);

    57 

    58         private:

    59             friend class MediaNode;

    60             friend class AudioNode;

    61 

    62             void deleteGraph();

    63             bool updateStreamSpecificationRecursive(AudioConnection *connection);

    64             void createAndConnectAuNodesRecursive(AudioConnection *connection);

    65             bool createAudioUnitsRecursive(AudioConnection *connection);

    66 

    67             void connectLate(AudioConnection *connection);

    68             void disconnectLate(AudioConnection *connection);

    69 

    70             int nodeCount();

    71 

    72             bool m_initialized;

    73             bool m_startedLogically;

    74             bool m_rebuildLater;

    75             bool m_graphCannotPlay;

    76             bool m_paused;

    77 

    78             AUGraph m_audioGraphRef;

    79             MediaNode *m_root;

    80     };

    81 

    82 }} // namespace Phonon::QT7

    83 

    84 QT_END_NAMESPACE

    85 

    86 #endif // Phonon_QT7_AUDIOGRAPH_H