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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
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**
**
****************************************************************************/
#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/qelapsedtimer.h>
#include <QtCore/qiodevice.h>
#include "qaudio.h"
#include "qaudiodeviceinfo.h"
#include "qaudiosystem.h"
#include <pulse/pulseaudio.h>
QT_BEGIN_NAMESPACE
class QPulseAudioOutput : public QAbstractAudioOutput
{
friend class PulseOutputPrivate;
Q_OBJECT
public:
QPulseAudioOutput(const QByteArray &device);
~QPulseAudioOutput();
void start(QIODevice *device) override;
QIODevice *start() override;
void stop() override;
void reset() override;
void suspend() override;
void resume() override;
int bytesFree() const override;
int periodSize() const override;
void setBufferSize(int value) override;
int bufferSize() const override;
void setNotifyInterval(int milliSeconds) override;
int notifyInterval() const override;
qint64 processedUSecs() const override;
qint64 elapsedUSecs() const override;
QAudio::Error error() const override;
QAudio::State state() const override;
void setFormat(const QAudioFormat &format) override;
QAudioFormat format() const override;
void setVolume(qreal volume) override;
qreal volume() const override;
void setCategory(const QString &category) override;
QString category() const override;
public:
void streamUnderflowCallback();
private:
void setState(QAudio::State state);
void setError(QAudio::Error error);
bool open();
void close();
qint64 write(const char *data, qint64 len);
private Q_SLOTS:
void userFeed();
void onPulseContextFailed();
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;
int m_periodTime;
pa_stream *m_stream;
int m_notifyInterval;
int m_periodSize;
int m_bufferSize;
int m_maxBufferSize;
QElapsedTimer m_clockStamp;
qint64 m_totalTimeValue;
QTimer *m_tickTimer;
char *m_audioBuffer;
QElapsedTimer m_timeStamp;
qint64 m_elapsedTimeOffset;
bool m_resuming;
QString m_category;
qreal m_volume;
pa_sample_spec m_spec;
};
class PulseOutputPrivate : public QIODevice
{
friend class QPulseAudioOutput;
Q_OBJECT
public:
PulseOutputPrivate(QPulseAudioOutput *audio);
virtual ~PulseOutputPrivate() {}
protected:
qint64 readData(char *data, qint64 len) override;
qint64 writeData(const char *data, qint64 len) override;
private:
QPulseAudioOutput *m_audioDevice;
};
QT_END_NAMESPACE
#endif
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