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
Constant | Value | Description |
---|---|---|
QCameraViewfinderSettingsControl::Resolution | 0 | Viewfinder resolution, QSize. |
QCameraViewfinderSettingsControl::PixelAspectRatio | 1 | Pixel aspect ratio, QSize as in QVideoSurfaceFormat::pixelAspectRatio |
QCameraViewfinderSettingsControl::MinimumFrameRate | 2 | Minimum viewfinder frame rate, qreal |
QCameraViewfinderSettingsControl::MaximumFrameRate | 3 | Maximum viewfinder frame rate, qreal |
QCameraViewfinderSettingsControl::PixelFormat | 4 | Viewfinder pixel format, QVideoFrame::PixelFormat |
QCameraViewfinderSettingsControl::UserParameter | 1000 | The 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.