qt-everywhere-src-5.15.1/qtmultimedia/src/multimedia/qmediaresourceset_p.h

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#ifndef QMEDIARESOURCESET_P_H
#define QMEDIARESOURCESET_P_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 <QObject>
#include <qtmultimediaglobal.h>

QT_BEGIN_NAMESPACE

#define QMediaPlayerResourceSetInterface_iid \
    "org.qt-project.qt.mediaplayerresourceset/5.0"

class Q_MULTIMEDIA_EXPORT QMediaPlayerResourceSetInterface : public QObject
{
    Q_OBJECT
public:
    virtual bool isVideoEnabled() const = 0;
    virtual bool isGranted() const = 0;
    virtual bool isAvailable() const = 0;

    virtual void acquire() = 0;
    virtual void release() = 0;
    virtual void setVideoEnabled(bool enabled) = 0;

    static QString iid();

Q_SIGNALS:
    void resourcesGranted();
    void resourcesLost();
    void resourcesDenied();
    void resourcesReleased();
    void availabilityChanged(bool available);

protected:
    QMediaPlayerResourceSetInterface(QObject *parent = nullptr);
};

QT_END_NAMESPACE

#endif // QMEDIARESOURCESET_P_H