qandroidaudiosource_p.h

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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 QOPENSLESAUDIOINPUT_H
#define QOPENSLESAUDIOINPUT_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 <QElapsedTimer>
#include <SLES/OpenSLES.h>
 
#ifdef ANDROID
#include <SLES/OpenSLES_Android.h>
 
#define QT_ANDROID_PRESET_MIC "mic"
#define QT_ANDROID_PRESET_CAMCORDER "camcorder"
#define QT_ANDROID_PRESET_VOICE_RECOGNITION "voicerecognition"
#define QT_ANDROID_PRESET_VOICE_COMMUNICATION "voicecommunication"
 
#endif
 
QT_BEGIN_NAMESPACE
 
class QOpenSLESEngine;
class QIODevice;
class QBuffer;
 
class QAndroidAudioSource : public QPlatformAudioSource
{
    Q_OBJECT
 
public:
    QAndroidAudioSource(const QByteArray &device, QObject *parent);
    ~QAndroidAudioSource();
 
    void start(QIODevice *device);
    QIODevice *start();
    void stop();
    void reset();
    void suspend();
    void resume();
    qsizetype bytesReady() const;
    void setBufferSize(qsizetype value);
    qsizetype bufferSize() const;
    qint64 processedUSecs() 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 Q_SLOTS:
    void processBuffer();
 
private:
    bool startRecording();
    void stopRecording();
    void writeDataToDevice(const char *data, int size);
    void flushBuffers();
 
    QByteArray m_device;
    QOpenSLESEngine *m_engine;
    SLObjectItf m_recorderObject;
    SLRecordItf m_recorder;
#ifdef ANDROID
    SLuint32 m_recorderPreset;
    SLAndroidSimpleBufferQueueItf m_bufferQueue;
#else
    SLBufferQueueItf m_bufferQueue;
#endif
 
    bool m_pullMode;
    qint64 m_processedBytes;
    QIODevice *m_audioSource;
    QBuffer *m_bufferIODevice;
    QByteArray m_pushBuffer;
    QAudioFormat m_format;
    QAudio::Error m_errorState;
    QAudio::State m_deviceState;
    qint64 m_lastNotifyTime;
    qreal m_volume;
    int m_bufferSize;
    QByteArray *m_buffers;
    int m_currentBuffer;
};
 
QT_END_NAMESPACE
 
#endif // QOPENSLESAUDIOINPUT_H