/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the QtMultimedia module of the Qt Toolkit.
**
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** This file contains pre-release code and may not be distributed.
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** Beta Release License Agreement.
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** 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
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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//
//  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 QAUDIOINPUT_MAC_P_H
#define QAUDIOINPUT_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/qatomic.h>

#include <QtMultimedia/qaudio.h>
#include <QtMultimedia/qaudioformat.h>
#include <QtMultimedia/qaudioengine.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QTimer;
class QIODevice;

namespace
{
class QAudioInputBuffer;
}

class QAudioInputPrivate : public QAbstractAudioInput
{
    Q_OBJECT

public:
    bool            isOpen;
    int             periodSizeBytes;
    int             internalBufferSize;
    qint64          totalFrames;
    QAudioFormat    audioFormat;
    QIODevice*      audioIO;
    AudioUnit       audioUnit;
    AudioDeviceID   audioDeviceId;
    Float64         clockFrequency;
    UInt64          startTime;
    QAudio::Error   errorCode;
    QAudio::State   stateCode;
    QAudioInputBuffer*   audioBuffer;
    QMutex          mutex;
    QWaitCondition  threadFinished;
    QAtomicInt      audioThreadState;
    QTimer*         intervalTimer;
    AudioStreamBasicDescription streamFormat;
    AudioStreamBasicDescription deviceFormat;

    QAudioInputPrivate(const QByteArray& device, QAudioFormat const& format);
    ~QAudioInputPrivate();

    bool open();
    void close();

    QAudioFormat format() const;

    QIODevice* start(QIODevice* device);
    void stop();
    void reset();
    void suspend();
    void resume();
    void idle();

    int bytesReady() const;
    int periodSize() const;

    void setBufferSize(int value);
    int bufferSize() const;

    void setNotifyInterval(int milliSeconds);
    int notifyInterval() const;

    qint64 totalTime() const;
    qint64 clock() const;

    QAudio::Error error() const;
    QAudio::State state() const;

    void audioThreadStart();
    void audioThreadStop();

    void audioDeviceStop();
    void audioDeviceFull();
    void audioDeviceError();

    void startTimers();
    void stopTimers();

signals:
    void stateChanged(QAudio::State);
    void notify();

private slots:
    void deviceStopped();

private:
    enum { Running, Stopped };

    // Input callback
    static OSStatus inputCallback(void* inRefCon,
                                    AudioUnitRenderActionFlags* ioActionFlags,
                                    const AudioTimeStamp* inTimeStamp,
                                    UInt32 inBusNumber,
                                    UInt32 inNumberFrames,
                                    AudioBufferList* ioData);
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QAUDIOINPUT_MAC_P_H