QCameraControl

The QCameraControl class is an abstract base class for classes that control still cameras or video cameras. More…

Detailed Description

This service is provided by a QMediaService object via QMediaService::control(). It is used by QCamera .

The interface name of QCameraControl is org.qt-project.qt.cameracontrol/5.0 as defined in QCameraControl_iid .

See also

requestControl() QCamera

class PySide2.QtMultimedia.QCameraControl([parent=None])

param parent:

PySide2.QtCore.QObject

Constructs a camera control object with parent .

PySide2.QtMultimedia.QCameraControl.PropertyChangeType

Constant	Description
QCameraControl.CaptureMode	Indicates the capture mode is changed.
QCameraControl.ImageEncodingSettings	Image encoder settings are changed, including resolution.
QCameraControl.VideoEncodingSettings	Video encoder settings are changed, including audio, video and container settings.
QCameraControl.Viewfinder	Viewfinder is changed.
QCameraControl.ViewfinderSettings	Viewfinder settings are changed.

PySide2.QtMultimedia.QCameraControl.canChangeProperty(changeType, status)

Parameters:

• changeType – PropertyChangeType

• status – Status

Return type:

bool

Returns true if backend can effectively apply changing camera properties of changeType type while the camera state is QCamera::Active and camera status matches status parameter.

If backend doesn’t support applying this change in the active state, it will be stopped before the settings are changed and restarted after. Otherwise the backend should apply the change in the current state, with the camera status indicating the progress, if necessary.

PySide2.QtMultimedia.QCameraControl.captureMode()

Return type:

CaptureModes

Returns the current capture mode.

See also

setCaptureMode()

PySide2.QtMultimedia.QCameraControl.captureModeChanged(mode)

Parameters:

mode – CaptureModes

PySide2.QtMultimedia.QCameraControl.error(error, errorString)

Parameters:

• error – int

• errorString – str

PySide2.QtMultimedia.QCameraControl.isCaptureModeSupported(mode)

Parameters:

mode – CaptureModes

Return type:

bool

Returns true if the capture mode is suported.

PySide2.QtMultimedia.QCameraControl.setCaptureMode(arg__1)

Parameters:

arg__1 – CaptureModes

Sets the current capture mode .

The capture mode changes are synchronous and allowed in any camera state.

If the capture mode is changed while camera is active, it’s recommended to change status to LoadedStatus and start activating the camera in the next event loop with the status changed to StartingStatus . This allows the capture settings to be applied before camera is started. Than change the status to QCamera::StartedStatus when the capture mode change is done.

See also

captureMode()

PySide2.QtMultimedia.QCameraControl.setState(state)

Parameters:

state – State

Sets the camera state .

State changes are synchronous and indicate user intention, while camera status is used as a feedback mechanism to inform application about backend status. Status changes are reported asynchronously with statusChanged() signal.

See also

state() State

PySide2.QtMultimedia.QCameraControl.state()

Return type:

State

Returns the state of the camera service.

See also

setState() state

PySide2.QtMultimedia.QCameraControl.stateChanged(arg__1)

Parameters:

arg__1 – State

PySide2.QtMultimedia.QCameraControl.status()

Return type:

Status

Returns the status of the camera service.

See also

state

PySide2.QtMultimedia.QCameraControl.statusChanged(arg__1)

Parameters:

arg__1 – Status