Calls the provided function once for each structure and caps feature in the #GstCaps. The function must not modify the fields. Also see gst.caps.Caps.mapInPlace and gst.caps.Caps.filterAndMapInPlace.
a function to call for each field
true if the supplied function returns true for each call, false otherwise.
Calls the provided function once for each structure and caps feature in the #GstCaps. The function must not modify the fields. Also see gst.caps.Caps.mapInPlace and gst.caps.Caps.filterAndMapInPlace.