class QCameraDevice

The QCameraDevice class provides general information about camera devices. More…

Synopsis

Properties

• correctionAngleᅟ

• descriptionᅟ

• idᅟ

• isDefaultᅟ

• positionᅟ

• videoFormatsᅟ

Methods

• def __init__()

• def correctionAngle()

• def description()

• def id()

• def isDefault()

• def isNull()

• def __ne__()

• def __eq__()

• def photoResolutions()

• def position()

• def videoFormats()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description

Warning

This section contains snippets that were automatically translated from C++ to Python and may contain errors.

QCameraDevice represents a physical camera device and its properties.

You can discover what cameras are available on a system using the availableCameras() and defaultCamera() functions. These are contained within QtMultimedia::MediaDevices.

This example prints the name of all available cameras:

cameras = QMediaDevices.videoInputs()
for cameraDevice in cameras:
    print(cameraDevice.description())

A QCameraDevice can be used to construct a QCamera . The following example instantiates a QCamera whose camera device is named mycamera:

cameras = QMediaDevices.videoInputs()
for cameraDevice in cameras:
    if cameraDevice.description() == "mycamera":
        camera = QCamera(cameraDevice)

You can also use QCameraDevice to get general information about a camera device such as description and physical position on the system.

myCamera = QCamera()
cameraDevice = camera.cameraDevice()
if cameraDevice.position() == QCameraDevice.FrontFace:
    print("The camera is on the front face of the hardware system.")
elif cameraDevice.position() == QCameraDevice.BackFace:
    print("The camera is on the back face of the hardware system.")

See also

QCamera

class Position

This enum specifies the physical position of the camera on the system hardware.

Constant	Description
QCameraDevice.UnspecifiedPosition	The camera position is unspecified or unknown.
QCameraDevice.BackFace	The camera is on the back face of the system hardware. For example on a mobile device, it means it is on the opposite side to that of the screen.
QCameraDevice.FrontFace	The camera is on the front face of the system hardware. For example on a mobile device, it means it is on the same side as that of the screen. Front-facing cameras generate video frames with the property mirrored set to true. This means that the presentation of these frames is flipped around the vertical axis to display the video output as a mirror, whereas recording only considers the transformations of the surface specified in surfaceFormat .

See also

position()

Added in version 6.1.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property correctionAngleᅟ: QtVideo.Rotation

Returns the rotation angle needed to compensate for the physical camera rotation of the camera compared to its native orientation. In other words, the property represents the clockwise angle through which the output image needs to be rotated to be upright on the device screen in its native orientation. Since correctionAngle is relative to the native orientation, this value does not change with altering the device orientation (portrait/landscape). The correction angle may be non-zero mostly on Android, where native and camera orientations are defined by the manufacturer.

Access functions:

• correctionAngle()

property descriptionᅟ: str

Returns the human-readable description of the camera.

Use this string to present the device to the user.

Access functions:

• description()

property idᅟ: QByteArray

Returns the device id of the camera

This is a unique ID to identify the camera and may not be human-readable.

Access functions:

• id()

property isDefaultᅟ: bool

Returns true if this is the default camera device.

Access functions:

• isDefault()

property positionᅟ: QCameraDevice.Position

Returns the physical position of the camera on the hardware system.

Access functions:

• position()

property videoFormatsᅟ: list of QCameraFormat

Returns the video formats supported by the camera.

Access functions:

• videoFormats()

__init__()

Constructs a null camera device

__init__(other)

Parameters:

other – QCameraDevice

Constructs a copy of other.

correctionAngle()

Return type:

Rotation

Getter of property correctionAngleᅟ .

description()

Return type:

str

Getter of property descriptionᅟ .

id()

Return type:

QByteArray

Getter of property idᅟ .

isDefault()

Return type:

bool

Getter of property isDefaultᅟ .

isNull()

Return type:

bool

Returns true if this QCameraDevice is null or invalid.

__ne__(other)

Parameters:

other – QCameraDevice

Return type:

bool

Returns true if this QCameraDevice is different from other.

__eq__(other)

Parameters:

other – QCameraDevice

Return type:

bool

Returns true if this QCameraDevice is equal to other.

photoResolutions()

Return type:

.list of QSize

Returns a list of resolutions that the camera can use to capture still images.

See also

QImageCapture

position()

Return type:

Position

Getter of property positionᅟ .

videoFormats()

Return type:

.list of QCameraFormat

Getter of property videoFormatsᅟ .