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// Copyright (C) 2021 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 QWASMAUDIOSINK_H
#define QWASMAUDIOSINK_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 <QTimer>
#include <QElapsedTimer>
class ALData;
class QIODevice;
QT_BEGIN_NAMESPACE
class QWasmAudioSink : public QPlatformAudioSink
{
Q_OBJECT
QByteArray m_name;
ALData *aldata = nullptr;
QTimer m_timer;
QIODevice *m_device = nullptr;
QAudioFormat m_format;
QAudio::Error m_error = QAudio::NoError;
bool m_running = false;
QAudio::State m_state = QAudio::StoppedState;
int m_bufferSize = 0;
quint64 m_processed = 0;
QElapsedTimer m_elapsedTimer;
int m_bufferFragmentsCount = 10;
int m_notifyInterval = 0;
char *m_tmpData = nullptr;
int m_bufferFragmentSize = 0;
int m_lastNotified = 0;
int m_tmpDataOffset = 0;
int m_bufferFragmentsBusyCount = 0;
bool m_pullMode;
qreal m_volume = 1;
void loadALBuffers();
void unloadALBuffers();
void nextALBuffers();
private slots:
void updateState();
void setError(QAudio::Error);
public:
QWasmAudioSink(const QByteArray &device);
~QWasmAudioSink();
public:
void start(QIODevice *device) override;
QIODevice *start() override;
void start(bool mode);
void stop() override;
void reset() override;
void suspend() override;
void resume() override;
int bytesFree() const override;
void setBufferSize(int value) override;
int bufferSize() const override;
qint64 processedUSecs() const override;
QAudio::Error error() const override;
QAudio::State state() const override;
void setFormat(const QAudioFormat &fmt) override;
QAudioFormat format() const override;
void setVolume(qreal volume) override;
qreal volume() const override;
friend class QWasmAudioSinkDevice;
};
QT_END_NAMESPACE
#endif // QWASMAUDIOSINK_H
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