/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

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

**

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

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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

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

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

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

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

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

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

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

//

//  W A R N I N G

//  -------------

//

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

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

// version without notice, or even be removed.

//

// We mean it.

//

#ifndef QAUDIOOUTPUT_MAC_P_H

#define QAUDIOOUTPUT_MAC_P_H

#include <CoreServices/CoreServices.h>

#include <CoreAudio/CoreAudio.h>

#include <AudioUnit/AudioUnit.h>

#include <AudioToolbox/AudioToolbox.h>

#include <QtCore/qobject.h>

#include <QtCore/qmutex.h>

#include <QtCore/qwaitcondition.h>

#include <QtCore/qtimer.h>

#include <QtCore/qatomic.h>

#include <QtMultimedia/qaudio.h>

#include <QtMultimedia/qaudioformat.h>

#include <QtMultimedia/qaudioengine.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QIODevice;

{

class QAudioOutputBuffer;

}

class QAudioOutputPrivate : public QAbstractAudioOutput

{

    Q_OBJECT

public:

    bool            isOpen;

    int             internalBufferSize;

    int             periodSizeBytes;

    qint64          totalFrames;

    QAudioFormat    audioFormat;

    QIODevice*      audioIO;

    AudioDeviceID   audioDeviceId;

    AudioUnit       audioUnit;

    Float64         clockFrequency;

    UInt64          startTime;

    AudioStreamBasicDescription deviceFormat;

    AudioStreamBasicDescription streamFormat;

    QAtomicInt      audioThreadState;

    QWaitCondition  threadFinished;

    QMutex          mutex;

    QTimer*         intervalTimer;

    QAudio::Error    errorCode;

    QAudio::State    stateCode;

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

    ~QAudioOutputPrivate();

    bool open();

    void close();

    QAudioFormat format() const;

    QIODevice* start(QIODevice* device);

    void stop();

    void reset();

    void suspend();

    void resume();

    int bytesFree() const;

    int periodSize() const;

    void setBufferSize(int value);

    int bufferSize() const;

    void setNotifyInterval(int milliSeconds);

    int notifyInterval() const;

    qint64 processedUSecs() const;

    qint64 elapsedUSecs() const;

    QAudio::Error error() const;

    QAudio::State state() const;

    void audioThreadStart();

    void audioThreadStop();

    void audioThreadDrain();

    void audioDeviceStop();

    void audioDeviceIdle();

    void audioDeviceError();

    void startTimers();

    void stopTimers();

private slots:

    void deviceStopped();

    void inputReady();

private:

    enum { Running, Draining, Stopped };

    static OSStatus renderCallback(void* inRefCon,

                                    AudioUnitRenderActionFlags* ioActionFlags,

                                    const AudioTimeStamp* inTimeStamp,

                                    UInt32 inBusNumber,

                                    UInt32 inNumberFrames,

                                    AudioBufferList* ioData);

};

QT_END_NAMESPACE

QT_END_HEADER

#endif