Adds a filter for which #GstDevice will be monitored, any device that matches all classes and the #GstCaps will be returned.
Filters must be added before the #GstDeviceMonitor is started.
device classes to use as filter or %NULL for any class
the #GstCaps to filter or %NULL for ANY
Return: The id of the new filter or %0 if no provider matched the filter's classes.
1.4
See Implementation
Adds a filter for which #GstDevice will be monitored, any device that matches all classes and the #GstCaps will be returned.
Filters must be added before the #GstDeviceMonitor is started.