qt-everywhere-src-5.14.1/qtmultimedia/src/plugins/gstreamer/camerabin/camerabinfocus.h

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#ifndef CAMERABINFOCUSCONTROL_H
#define CAMERABINFOCUSCONTROL_H

#include <qcamera.h>
#include <qcamerafocuscontrol.h>

#include <private/qgstreamerbufferprobe_p.h>

#include <qbasictimer.h>
#include <qmutex.h>
#include <qvector.h>

#include <gst/gst.h>
#include <glib.h>

QT_BEGIN_NAMESPACE

class CameraBinSession;

class CameraBinFocus
    : public QCameraFocusControl
#if GST_CHECK_VERSION(1,0,0)
    , QGstreamerBufferProbe
#endif
{
    Q_OBJECT

public:
    CameraBinFocus(CameraBinSession *session);
    virtual ~CameraBinFocus();

    QCameraFocus::FocusModes focusMode() const override;
    void setFocusMode(QCameraFocus::FocusModes mode) override;
    bool isFocusModeSupported(QCameraFocus::FocusModes mode) const override;

    QCameraFocus::FocusPointMode focusPointMode() const override;
    void setFocusPointMode(QCameraFocus::FocusPointMode mode) override;
    bool isFocusPointModeSupported(QCameraFocus::FocusPointMode) const override;
    QPointF customFocusPoint() const override;
    void setCustomFocusPoint(const QPointF &point) override;

    QCameraFocusZoneList focusZones() const override;

    void handleFocusMessage(GstMessage*);
    QCamera::LockStatus focusStatus() const { return m_focusStatus; }

Q_SIGNALS:
    void _q_focusStatusChanged(QCamera::LockStatus status, QCamera::LockChangeReason reason);

public Q_SLOTS:
    void _q_startFocusing();
    void _q_stopFocusing();

    void setViewfinderResolution(const QSize &resolution);

#if GST_CHECK_VERSION(1,0,0)
protected:
    void timerEvent(QTimerEvent *event) override;
#endif

private Q_SLOTS:
    void _q_setFocusStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason);
    void _q_handleCameraStatusChange(QCamera::Status status);

#if GST_CHECK_VERSION(1,0,0)
    void _q_updateFaces();
#endif

private:
    void resetFocusPoint();
    void updateRegionOfInterest(const QRectF &rectangle);
    void updateRegionOfInterest(const QVector<QRect> &rectangles);

#if GST_CHECK_VERSION(1,0,0)
    bool probeBuffer(GstBuffer *buffer) override;
#endif

    CameraBinSession *m_session;
    QCamera::Status m_cameraStatus;
    QCameraFocus::FocusModes m_focusMode;
    QCameraFocus::FocusPointMode m_focusPointMode;
    QCamera::LockStatus m_focusStatus;
    QCameraFocusZone::FocusZoneStatus m_focusZoneStatus;
    QPointF m_focusPoint;
    QRectF m_focusRect;
    QSize m_viewfinderResolution;
    QVector<QRect> m_faces;
    QVector<QRect> m_faceFocusRects;
    QBasicTimer m_faceResetTimer;
    mutable QMutex m_mutex;
};

QT_END_NAMESPACE

#endif // CAMERABINFOCUSCONTROL_H