Qt Documentation

Contents

QtMultimedia QML Type

Provides a global object with useful functions from Qt Multimedia. More...

Import Statement: import QtMultimedia 5.4
Since: QtMultimedia 5.4

Properties

Detailed Description

The QtMultimedia object is a global object with utility functions and properties.

It is not instantiable; to use it, call the members of the global QtMultimedia object directly. For example:

import QtQuick 2.0
import QtMultimedia 5.4

Camera {
    deviceId: QtMultimedia.defaultCamera.deviceId
}

Property Documentation

read-onlyavailableCameras : list<object>

This property provides information about the cameras available on the system.

Each object in the list has the following properties:

deviceIdThis read-only property holds the unique identifier of the camera.

You can choose which device to use with a Camera object by setting its deviceId property to this value.

displayNameThis read-only property holds the human-readable name of the camera. You can use this property to display the name of the camera in a user interface.
positionThis read-only property holds the physical position of the camera on the hardware system. Please see Camera.position for more information.
orientationThis read-only property holds the physical orientation of the camera sensor. Please see Camera.orientation for more information.

Note: This property is static; it is not updated when cameras are added or removed from the system, like USB cameras on a desktop platform.

The following example shows how to display a list of available cameras. The user can change the active camera by selecting one of the items in the list.

import QtQuick 2.0
import QtMultimedia 5.4

Item {

    Camera {
        id: camera
    }

    VideoOutput {
        anchors.fill: parent
        source: camera
    }

    ListView {
        anchors.fill: parent

        model: QtMultimedia.availableCameras
        delegate: Text {
            text: modelData.displayName

            MouseArea {
                anchors.fill: parent
                onClicked: camera.deviceId = modelData.deviceId
            }
        }
    }
}

read-onlydefaultCamera : object

The defaultCamera object provides information about the default camera on the system.

Its properties are deviceId, displayName, position and orientation. See availableCameras for a description of each of them.

If there is no default camera, defaultCamera.deviceId will contain an empty string.

Note: This property is static; it is not updated if the system's default camera changes after the application started.


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