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     2 **

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

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtMultimedia module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 //

    43 //  W A R N I N G

    44 //  -------------

    45 //

    46 // This file is not part of the Qt API.  It exists for the convenience

    47 // of other Qt classes.  This header file may change from version to

    48 // version without notice, or even be removed.

    49 //

    50 // We mean it.

    51 //

    52 

    53 #ifndef QAUDIOOUTPUT_MAC_P_H

    54 #define QAUDIOOUTPUT_MAC_P_H

    55 

    56 #include <CoreServices/CoreServices.h>

    57 #include <CoreAudio/CoreAudio.h>

    58 #include <AudioUnit/AudioUnit.h>

    59 #include <AudioToolbox/AudioToolbox.h>

    60 

    61 #include <QtCore/qobject.h>

    62 #include <QtCore/qmutex.h>

    63 #include <QtCore/qwaitcondition.h>

    64 #include <QtCore/qtimer.h>

    65 #include <QtCore/qatomic.h>

    66 

    67 #include <QtMultimedia/qaudio.h>

    68 #include <QtMultimedia/qaudioformat.h>

    69 #include <QtMultimedia/qaudioengine.h>

    70 

    71 QT_BEGIN_HEADER

    72 

    73 QT_BEGIN_NAMESPACE

    74 

    75 class QIODevice;

    76 

    77 namespace

    78 {

    79 class QAudioOutputBuffer;

    80 }

    81 

    82 class QAudioOutputPrivate : public QAbstractAudioOutput

    83 {

    84     Q_OBJECT

    85 

    86 public:

    87     bool            isOpen;

    88     int             internalBufferSize;

    89     int             periodSizeBytes;

    90     qint64          totalFrames;

    91     QAudioFormat    audioFormat;

    92     QIODevice*      audioIO;

    93     AudioDeviceID   audioDeviceId;

    94     AudioUnit       audioUnit;

    95     Float64         clockFrequency;

    96     UInt64          startTime;

    97     AudioStreamBasicDescription deviceFormat;

    98     AudioStreamBasicDescription streamFormat;

    99     QAudioOutputBuffer*   audioBuffer;

   100     QAtomicInt      audioThreadState;

   101     QWaitCondition  threadFinished;

   102     QMutex          mutex;

   103     QTimer*         intervalTimer;

   104 

   105     QAudio::Error    errorCode;

   106     QAudio::State    stateCode;

   107 

   108     QAudioOutputPrivate(const QByteArray& device, const QAudioFormat& format);

   109     ~QAudioOutputPrivate();

   110 

   111     bool open();

   112     void close();

   113 

   114     QAudioFormat format() const;

   115 

   116     QIODevice* start(QIODevice* device);

   117     void stop();

   118     void reset();

   119     void suspend();

   120     void resume();

   121 

   122     int bytesFree() const;

   123     int periodSize() const;

   124 

   125     void setBufferSize(int value);

   126     int bufferSize() const;

   127 

   128     void setNotifyInterval(int milliSeconds);

   129     int notifyInterval() const;

   130 

   131     qint64 totalTime() const;

   132     qint64 clock() const;

   133 

   134     QAudio::Error error() const;

   135     QAudio::State state() const;

   136 

   137     void audioThreadStart();

   138     void audioThreadStop();

   139     void audioThreadDrain();

   140 

   141     void audioDeviceStop();

   142     void audioDeviceIdle();

   143     void audioDeviceError();

   144 

   145     void startTimers();

   146     void stopTimers();

   147 

   148 private slots:

   149     void deviceStopped();

   150     void inputReady();

   151 

   152 private:

   153     enum { Running, Draining, Stopped };

   154 

   155     static OSStatus renderCallback(void* inRefCon,

   156                                     AudioUnitRenderActionFlags* ioActionFlags,

   157                                     const AudioTimeStamp* inTimeStamp,

   158                                     UInt32 inBusNumber,

   159                                     UInt32 inNumberFrames,

   160                                     AudioBufferList* ioData);

   161 };

   162 

   163 QT_END_NAMESPACE

   164 

   165 QT_END_HEADER

   166 

   167 #endif