pub unsafe static AVCaptureDeviceSubjectAreaDidChangeNotification: &'static NSNotificationNameAvailable on crate feature
AVCaptureDevice only.Expand description
Posted when the instance of AVCaptureDevice has detected a substantial change to the video subject area.
Clients may observe the AVCaptureDeviceSubjectAreaDidChangeNotification to know when an instance of AVCaptureDevice has detected a substantial change to the video subject area. This notification is only sent if you first set subjectAreaChangeMonitoringEnabled to YES.
See also Apple’s documentation