Looks for all elements inside the bin that implements the given
interface. You can safely cast all returned elements to the given interface.
The function recurses inside child bins. The iterator will yield a series
of gstreamer.Element that should be unreffed after use.
Looks for all elements inside the bin that implements the given interface. You can safely cast all returned elements to the given interface. The function recurses inside child bins. The iterator will yield a series of gstreamer.Element that should be unreffed after use.
MT safe. Caller owns returned value.