QCameraViewfinderSettingsControl Class

The QCameraViewfinderSettingsControl class provides an abstract class for controlling camera viewfinder parameters. More...

Header: #include <QCameraViewfinderSettingsControl>
qmake: QT += multimedia
Inherits: QMediaControl

Public Types

enum ViewfinderParameter { Resolution, PixelAspectRatio, MinimumFrameRate, MaximumFrameRate, PixelFormat, UserParameter }

Public Functions

virtual ~QCameraViewfinderSettingsControl()
virtual bool isViewfinderParameterSupported(QCameraViewfinderSettingsControl::ViewfinderParameter parameter) const = 0
virtual void setViewfinderParameter(QCameraViewfinderSettingsControl::ViewfinderParameter parameter, const QVariant &value) = 0
virtual QVariant viewfinderParameter(QCameraViewfinderSettingsControl::ViewfinderParameter parameter) const = 0
  • 31 public functions inherited from QObject

Static Public Members

const QMetaObject staticMetaObject
  • 9 static public members inherited from QObject

Protected Functions

QCameraViewfinderSettingsControl(QObject *parent = nullptr)
  • 9 protected functions inherited from QObject

Macros

Additional Inherited Members

  • 1 property inherited from QObject
  • 1 public slot inherited from QObject
  • 2 signals inherited from QObject

Detailed Description

The QCameraViewfinderSettingsControl class provides an abstract class for controlling camera viewfinder parameters.

The interface name of QCameraViewfinderSettingsControl is org.qt-project.qt.cameraviewfindersettingscontrol/5.0 as defined in QCameraViewfinderSettingsControl_iid.

Warning: New backends should implement QCameraViewfinderSettingsControl2 instead. Application developers should request this control only if QCameraViewfinderSettingsControl2 is not available.

See also QMediaService::requestControl(), QCameraViewfinderSettingsControl2, and QCamera.

Member Type Documentation

enum QCameraViewfinderSettingsControl::ViewfinderParameter

ConstantValueDescription
QCameraViewfinderSettingsControl::Resolution0Viewfinder resolution, QSize.
QCameraViewfinderSettingsControl::PixelAspectRatio1Pixel aspect ratio, QSize as in QVideoSurfaceFormat::pixelAspectRatio
QCameraViewfinderSettingsControl::MinimumFrameRate2Minimum viewfinder frame rate, qreal
QCameraViewfinderSettingsControl::MaximumFrameRate3Maximum viewfinder frame rate, qreal
QCameraViewfinderSettingsControl::PixelFormat4Viewfinder pixel format, QVideoFrame::PixelFormat
QCameraViewfinderSettingsControl::UserParameter1000The base value for platform specific extended parameters. For such parameters the sequential values starting from UserParameter should be used.

Member Function Documentation

[protected] QCameraViewfinderSettingsControl::QCameraViewfinderSettingsControl(QObject *parent = nullptr)

Constructs a camera viewfinder control object with parent.

[virtual] QCameraViewfinderSettingsControl::~QCameraViewfinderSettingsControl()

Destroys the camera viewfinder control object.

[pure virtual] bool QCameraViewfinderSettingsControl::isViewfinderParameterSupported(QCameraViewfinderSettingsControl::ViewfinderParameter parameter) const

[pure virtual] void QCameraViewfinderSettingsControl::setViewfinderParameter(QCameraViewfinderSettingsControl::ViewfinderParameter parameter, const QVariant &value)

See also viewfinderParameter().

[pure virtual] QVariant QCameraViewfinderSettingsControl::viewfinderParameter(QCameraViewfinderSettingsControl::ViewfinderParameter parameter) const

See also setViewfinderParameter().

Macro Documentation

QCameraViewfinderSettingsControl_iid

org.qt-project.qt.cameraviewfindersettingscontrol/5.0

Defines the interface name of the QCameraViewfinderSettingsControl class.