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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QOPENSLESAUDIOOUTPUT_H
#define QOPENSLESAUDIOOUTPUT_H
#include <qaudiosystem.h>
#include <SLES/OpenSLES.h>
#include <qbytearray.h>
#include <qmap.h>
#include <QTime>
#include <QIODevice>
QT_BEGIN_NAMESPACE
class QOpenSLESAudioOutput : public QAbstractAudioOutput
{
Q_OBJECT
public:
QOpenSLESAudioOutput(const QByteArray &device);
~QOpenSLESAudioOutput();
void start(QIODevice *device) Q_DECL_OVERRIDE;
QIODevice *start() Q_DECL_OVERRIDE;
void stop() Q_DECL_OVERRIDE;
void reset() Q_DECL_OVERRIDE;
void suspend() Q_DECL_OVERRIDE;
void resume() Q_DECL_OVERRIDE;
int bytesFree() const Q_DECL_OVERRIDE;
int periodSize() const Q_DECL_OVERRIDE;
void setBufferSize(int value) Q_DECL_OVERRIDE;
int bufferSize() const Q_DECL_OVERRIDE;
void setNotifyInterval(int milliSeconds) Q_DECL_OVERRIDE;
int notifyInterval() const Q_DECL_OVERRIDE;
qint64 processedUSecs() const Q_DECL_OVERRIDE;
qint64 elapsedUSecs() const Q_DECL_OVERRIDE;
QAudio::Error error() const Q_DECL_OVERRIDE;
QAudio::State state() const Q_DECL_OVERRIDE;
void setFormat(const QAudioFormat &format) Q_DECL_OVERRIDE;
QAudioFormat format() const Q_DECL_OVERRIDE;
void setVolume(qreal volume) Q_DECL_OVERRIDE;
qreal volume() const Q_DECL_OVERRIDE;
void setCategory(const QString &category) Q_DECL_OVERRIDE;
QString category() const Q_DECL_OVERRIDE;
private:
friend class SLIODevicePrivate;
Q_INVOKABLE void onEOSEvent();
Q_INVOKABLE void onBytesProcessed(qint64 bytes);
void bufferAvailable(quint32 count, quint32 playIndex);
static void playCallback(SLPlayItf playItf, void *ctx, SLuint32 event);
static void bufferQueueCallback(SLBufferQueueItf bufferQueue, void *ctx);
bool preparePlayer();
void destroyPlayer();
void stopPlayer();
void startPlayer();
qint64 writeData(const char *data, qint64 len);
void setState(QAudio::State state);
void setError(QAudio::Error error);
SLmillibel adjustVolume(qreal vol);
QByteArray m_deviceName;
QAudio::State m_state;
QAudio::Error m_error;
SLObjectItf m_outputMixObject;
SLObjectItf m_playerObject;
SLPlayItf m_playItf;
SLVolumeItf m_volumeItf;
SLBufferQueueItf m_bufferQueueItf;
QIODevice *m_audioSource;
char *m_buffers;
qreal m_volume;
bool m_pullMode;
int m_nextBuffer;
int m_bufferSize;
int m_notifyInterval;
int m_periodSize;
qint64 m_elapsedTime;
qint64 m_processedBytes;
QAtomicInt m_availableBuffers;
SLuint32 m_eventMask;
bool m_startRequiresInit;
qint32 m_streamType;
QTime m_clockStamp;
QAudioFormat m_format;
QString m_category;
static QMap<QString, qint32> m_categories;
};
class SLIODevicePrivate : public QIODevice
{
Q_OBJECT
public:
inline SLIODevicePrivate(QOpenSLESAudioOutput *audio) : m_audioDevice(audio) {}
inline ~SLIODevicePrivate() Q_DECL_OVERRIDE {}
protected:
inline qint64 readData(char *, qint64) Q_DECL_OVERRIDE { return 0; }
inline qint64 writeData(const char *data, qint64 len) Q_DECL_OVERRIDE;
private:
QOpenSLESAudioOutput *m_audioDevice;
};
qint64 SLIODevicePrivate::writeData(const char *data, qint64 len)
{
Q_ASSERT(m_audioDevice);
return m_audioDevice->writeData(data, len);
}
QT_END_NAMESPACE
#endif // QOPENSLESAUDIOOUTPUT_H
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