qt-everywhere-src-5.15.1/qtmultimedia/src/plugins/gstreamer/mediacapture/qgstreamerv4l2input.h

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#ifndef QGSTREAMERV4L2INPUT_H
#define QGSTREAMERV4L2INPUT_H

#include <QtCore/qhash.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qlist.h>
#include <QtCore/qsize.h>
#include "qgstreamercapturesession.h"

QT_BEGIN_NAMESPACE

class QGstreamerV4L2Input : public QObject, public QGstreamerVideoInput
{
    Q_OBJECT
public:
    QGstreamerV4L2Input(QObject *parent = 0);
    virtual ~QGstreamerV4L2Input();

    GstElement *buildElement() override;

    QList<qreal> supportedFrameRates(const QSize &frameSize = QSize()) const override;
    QList<QSize> supportedResolutions(qreal frameRate = -1) const override;

    QByteArray device() const;

public slots:
    void setDevice(const QByteArray &device);
    void setDevice(const QString &device);

private:
    void updateSupportedResolutions(const QByteArray &device);

    QList<qreal> m_frameRates;
    QList<QSize> m_resolutions;

    QHash<QSize, QSet<int> > m_ratesByResolution;

    QByteArray m_device;
};

QT_END_NAMESPACE

#endif // QGSTREAMERV4L2INPUT_H