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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QOPENSLESAUDIOOUTPUT_H
#define QOPENSLESAUDIOOUTPUT_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 <private/qaudiosystem_p.h>
#include <SLES/OpenSLES.h>
#include <qbytearray.h>
#include <qmap.h>
#include <QElapsedTimer>
#include <QIODevice>
QT_BEGIN_NAMESPACE
class QAndroidAudioSink : public QPlatformAudioSink
{
Q_OBJECT
public:
QAndroidAudioSink(const QByteArray &device, QObject *parent);
~QAndroidAudioSink();
void start(QIODevice *device) override;
QIODevice *start() override;
void stop() override;
void reset() override;
void suspend() override;
void resume() override;
qsizetype bytesFree() const override;
void setBufferSize(qsizetype value) override;
qsizetype bufferSize() const override;
qint64 processedUSecs() 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;
private:
friend class SLIODevicePrivate;
Q_INVOKABLE void onEOSEvent();
Q_INVOKABLE void onBytesProcessed(qint64 bytes);
Q_INVOKABLE void bufferAvailable();
static void playCallback(SLPlayItf playItf, void *ctx, SLuint32 event);
static void bufferQueueCallback(SLBufferQueueItf bufferQueue, void *ctx);
bool preparePlayer();
void destroyPlayer();
void stopPlayer();
void readyRead();
void startPlayer();
qint64 writeData(const char *data, qint64 len);
void setState(QAudio::State state);
void setError(QAudio::Error error);
SLmillibel adjustVolume(qreal vol);
static constexpr int BufferCount = 2;
QByteArray m_deviceName;
QAudio::State m_state = QAudio::StoppedState;
QAudio::State m_suspendedInState = QAudio::SuspendedState;
QAudio::Error m_error = QAudio::NoError;
SLObjectItf m_outputMixObject = nullptr;
SLObjectItf m_playerObject = nullptr;
SLPlayItf m_playItf = nullptr;
SLVolumeItf m_volumeItf = nullptr;
SLBufferQueueItf m_bufferQueueItf = nullptr;
QIODevice *m_audioSource = nullptr;
char *m_buffers = nullptr;
qreal m_volume = 1.0;
bool m_pullMode = false;
int m_nextBuffer = 0;
int m_bufferSize = 0;
qint64 m_elapsedTime = 0;
qint64 m_processedBytes = 0;
bool m_endSound = false;
QAtomicInt m_availableBuffers = BufferCount;
SLuint32 m_eventMask = SL_PLAYEVENT_HEADATEND;
bool m_startRequiresInit = true;
qint32 m_streamType;
QAudioFormat m_format;
};
class SLIODevicePrivate : public QIODevice
{
Q_OBJECT
public:
inline SLIODevicePrivate(QAndroidAudioSink *audio) : m_audioDevice(audio) {}
inline ~SLIODevicePrivate() override {}
protected:
inline qint64 readData(char *, qint64) override { return 0; }
inline qint64 writeData(const char *data, qint64 len) override;
private:
QAndroidAudioSink *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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