src/3rdparty/phonon/qt7/audionode.h
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     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