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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QAUDIOOUTPUTPULSE_H
#define QAUDIOOUTPUTPULSE_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qfile.h>
#include <QtCore/qtimer.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qdatetime.h>
#include "qaudio.h"
#include "qaudiodeviceinfo.h"
#include "qaudiosystem.h"
#include <pulse/pulseaudio.h>
QT_BEGIN_NAMESPACE
class QPulseAudioOutput : public QAbstractAudioOutput
{
friend class OutputPrivate;
Q_OBJECT
public:
QPulseAudioOutput(const QByteArray &device);
~QPulseAudioOutput();
void start(QIODevice *device);
QIODevice *start();
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 setFormat(const QAudioFormat &format);
QAudioFormat format() const;
void setVolume(qreal volume);
qreal volume() const;
public:
void streamUnderflowCallback();
private:
bool open();
void close();
qint64 write(const char *data, qint64 len);
private Q_SLOTS:
void userFeed();
private:
QByteArray m_device;
QByteArray m_streamName;
QAudioFormat m_format;
QAudio::Error m_errorState;
QAudio::State m_deviceState;
bool m_pullMode;
bool m_opened;
QIODevice *m_audioSource;
QTimer m_periodTimer;
pa_stream *m_stream;
int m_notifyInterval;
int m_periodSize;
int m_bufferSize;
QTime m_clockStamp;
qint64 m_totalTimeValue;
QTimer *m_tickTimer;
char *m_audioBuffer;
QTime m_timeStamp;
qint64 m_elapsedTimeOffset;
bool m_resuming;
qreal m_volume;
pa_cvolume m_chVolume;
pa_sample_spec m_spec;
};
class OutputPrivate : public QIODevice
{
friend class QPulseAudioOutput;
Q_OBJECT
public:
OutputPrivate(QPulseAudioOutput *audio);
virtual ~OutputPrivate() {}
protected:
qint64 readData(char *data, qint64 len);
qint64 writeData(const char *data, qint64 len);
private:
QPulseAudioOutput *m_audioDevice;
};
QT_END_NAMESPACE
#endif
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