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_AudioNode_H

    19 #define Phonon_QT7_AudioNode_H

    20 

    21 #include <QtCore/QObject>

    22 #include "backendheader.h"

    23 #include "audioconnection.h"

    24 #include <AudioToolbox/AudioToolbox.h>

    25 #include <AudioUnit/AudioUnit.h>

    26 

    27 QT_BEGIN_NAMESPACE

    28 

    29 namespace Phonon

    30 {

    31 namespace QT7

    32 {

    33     class AudioGraph;

    34     class MediaNodeEvent;

    35     class MediaNode;

    36 

    37     class MediaNodeConnection{

    38         MediaNode *source;

    39         MediaNode *sink;

    40         int inputPort;

    41         int outputPort;

    42     };

    43 

    44     class AudioNode

    45     {

    46         public:

    47             enum ConnectionSide {Source, Sink};

    48 

    49             AudioNode(int maxInput, int maxOutput);

    50             virtual ~AudioNode();

    51 

    52             virtual void createAndConnectAUNodes();

    53             virtual void createAudioUnits();

    54             virtual void setGraph(AudioGraph *audioGraph);

    55             virtual AUNode getInputAUNode();

    56             virtual AUNode getOutputAUNode();

    57             virtual bool fillInStreamSpecification(AudioConnection *connection, ConnectionSide side);

    58             virtual bool setStreamSpecification(AudioConnection *connection, ConnectionSide side);

    59             void notify(const MediaNodeEvent *event);

    60 

    61             virtual void mediaNodeEvent(const MediaNodeEvent *event);

    62             Float64 getTimeInSamples(int timeProperty);

    63             

    64             AudioGraph *m_audioGraph;    

    65             AudioConnection *m_lastConnectionIn;

    66 

    67             int m_maxInputBusses;

    68             int m_maxOutputBusses;

    69 

    70         protected:

    71 	        AUNode m_auNode;

    72             AudioUnit m_audioUnit;

    73 

    74             // Only the following methods needs to

    75             // be overidden by only_one-audio-unit nodes:

    76             virtual ComponentDescription getAudioNodeDescription() const;

    77             virtual void initializeAudioUnit();

    78 

    79         private:

    80             bool setStreamHelp(AudioConnection *c, int bus, OSType scope, bool fromSource);

    81     };

    82 }} // namespace Phonon::QT7

    83 

    84 QT_END_NAMESPACE

    85 

    86 #endif // Phonon_QT7_AudioNode_H