qt-everywhere-src-5.15.1/qtmultimedia/src/plugins/coreaudio/coreaudiosessionmanager.h

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#ifndef IOSAUDIOSESSIONMANAGER_H
#define IOSAUDIOSESSIONMANAGER_H

#include <QObject>
#ifdef QT_DEBUG_COREAUDIO
# include <QtCore/QDebug>
#endif

@class CoreAudioSessionObserver;

QT_BEGIN_NAMESPACE

class CoreAudioSessionManager : public QObject
{
    Q_OBJECT
public:
    enum AudioSessionCategorys {
        Ambient,
        SoloAmbient,
        Playback,
        Record,
        PlayAndRecord,
        AudioProcessing,
        MultiRoute
    };
    enum AudioSessionCategoryOptions {
        None = 0,
        MixWithOthers = 1,
        DuckOthers = 2,
        AllowBluetooth = 4,
        DefaultToSpeaker = 8
    };
    enum AudioSessionModes {
        Default,
        VoiceChat,
        GameChat,
        VideoRecording,
        Measurement,
        MoviePlayback
    };

    static CoreAudioSessionManager& instance();

    bool setActive(bool active);
    bool setCategory(AudioSessionCategorys category, AudioSessionCategoryOptions options = None);
    bool setMode(AudioSessionModes mode);

    AudioSessionCategorys category();
    AudioSessionModes mode();

    QList<QByteArray> inputDevices();
    QList<QByteArray> outputDevices();

    float currentIOBufferDuration();
    float preferredSampleRate();

signals:
    void activeChanged();
    void categoryChanged();
    void modeChanged();
    void routeChanged();
    void inputDevicesAvailableChanged();
    void outputDevicesAvailableChanged();

private:
    CoreAudioSessionManager();
    ~CoreAudioSessionManager();
    CoreAudioSessionManager(CoreAudioSessionManager const &copy);
    CoreAudioSessionManager& operator =(CoreAudioSessionManager const &copy);

    CoreAudioSessionObserver *m_sessionObserver;
};

#ifdef QT_DEBUG_COREAUDIO
QDebug operator <<(QDebug dbg, CoreAudioSessionManager::AudioSessionCategorys category);
QDebug operator <<(QDebug dbg, CoreAudioSessionManager::AudioSessionCategoryOptions option);
QDebug operator <<(QDebug dbg, CoreAudioSessionManager::AudioSessionModes mode);
#endif

QT_END_NAMESPACE

Q_DECLARE_METATYPE(CoreAudioSessionManager::AudioSessionCategorys)
Q_DECLARE_METATYPE(CoreAudioSessionManager::AudioSessionCategoryOptions)
Q_DECLARE_METATYPE(CoreAudioSessionManager::AudioSessionModes)

#endif // IOSAUDIOSESSIONMANAGER_H