Calls the provided function once for each structure and caps feature in the gstreamer.Caps The function must not modify the fields. Also see Caps.mapInPlace and Caps.filterAndMapInPlace.
a function to call for each field
private data
TRUE if the supplied function returns TRUE for each call, FALSE otherwise.
1.6
Calls the provided function once for each structure and caps feature in the gstreamer.Caps The function must not modify the fields. Also see Caps.mapInPlace and Caps.filterAndMapInPlace.