Calls the provided function once for each structure and caps feature in the #GstCaps. In contrast to gst_caps_foreach(), the function may modify but not delete the structures and features. The caps must be mutable.
a function to call for each field
private data
%TRUE if the supplied function returns %TRUE for each call, %FALSE otherwise.
1.6
See Implementation
Calls the provided function once for each structure and caps feature in the #GstCaps. In contrast to gst_caps_foreach(), the function may modify but not delete the structures and features. The caps must be mutable.