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/Qt 5.11

QVideoDeviceSelectorControl Class

The QVideoDeviceSelectorControl class provides an video device selector media control. More...

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

Public Functions

virtual ~QVideoDeviceSelectorControl()
virtual int defaultDevice() const = 0
virtual int deviceCount() const = 0
virtual QString deviceDescription(int index) const = 0
virtual QString deviceName(int index) const = 0
virtual int selectedDevice() const = 0
  • 34 public functions inherited from QObject

Public Slots

virtual void setSelectedDevice(int index) = 0
  • 1 public slot inherited from QObject

Signals

void devicesChanged()
void selectedDeviceChanged(int index)
void selectedDeviceChanged(const QString &name)

Protected Functions

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

Macros

QCameraInfoControl_iid
QVideoDeviceSelectorControl_iid

Additional Inherited Members

  • 1 property inherited from QObject
  • 1 public variable inherited from QObject
  • 10 static public members inherited from QObject
  • 2 protected variables inherited from QObject

Detailed Description

The QVideoDeviceSelectorControl class provides an video device selector media control.

The QVideoDeviceSelectorControl class provides descriptions of the video devices available on a system and allows one to be selected as the endpoint of a media service.

The interface name of QVideoDeviceSelectorControl is org.qt-project.qt.videodeviceselectorcontrol/5.0 as defined in QVideoDeviceSelectorControl_iid.

Member Function Documentation

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

Constructs a video device selector control with the given parent.

[virtual] QVideoDeviceSelectorControl::~QVideoDeviceSelectorControl()

Destroys a video device selector control.

[pure virtual] int QVideoDeviceSelectorControl::defaultDevice() const

Returns the index of the default video device.

[pure virtual] int QVideoDeviceSelectorControl::deviceCount() const

Returns the number of available video devices;

[pure virtual] QString QVideoDeviceSelectorControl::deviceDescription(int index) const

Returns a description of the video device at index.

[pure virtual] QString QVideoDeviceSelectorControl::deviceName(int index) const

Returns the name of the video device at index.

[signal] void QVideoDeviceSelectorControl::devicesChanged()

Signals that the list of available video devices has changed.

[pure virtual] int QVideoDeviceSelectorControl::selectedDevice() const

Returns the index of the selected video device.

See also setSelectedDevice().

[signal] void QVideoDeviceSelectorControl::selectedDeviceChanged(int index)

Signals that the selected video device index has changed.

Note: Signal selectedDeviceChanged is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:

connect(videoDeviceSelectorControl, QOverload<int>::of(&QVideoDeviceSelectorControl::selectedDeviceChanged),
    [=](int index){ /* ... */ });

[signal] void QVideoDeviceSelectorControl::selectedDeviceChanged(const QString &name)

Signals that the selected video device name has changed.

Note: Signal selectedDeviceChanged is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:

connect(videoDeviceSelectorControl, QOverload<const QString &>::of(&QVideoDeviceSelectorControl::selectedDeviceChanged),
    [=](const QString &name){ /* ... */ });

[pure virtual slot] void QVideoDeviceSelectorControl::setSelectedDevice(int index)

Sets the selected video device index.

See also selectedDevice().

Macro Documentation

QCameraInfoControl_iid

org.qt-project.qt.camerainfocontrol/5.3

Defines the interface name of the QCameraInfoControl class.

QVideoDeviceSelectorControl_iid

org.qt-project.qt.videodeviceselectorcontrol/5.0

Defines the interface name of the QVideoDeviceSelectorControl class.

© The Qt Company Ltd
Licensed under the GNU Free Documentation License, Version 1.3.
https://doc.qt.io/qt-5/qvideodeviceselectorcontrol.html