Calls the provided function once for each structure and caps feature in the gstreamer.Caps In contrast to 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
Calls the provided function once for each structure and caps feature in the gstreamer.Caps In contrast to Caps.foreach, the function may modify but not delete the structures and features. The caps must be mutable.