Set key with value as metadata in klass.
Same as gst_element_class_add_metadata(), but value must be a static string
or an inlined string, as it will not be copied. (GStreamer plugins will
be made resident once loaded, so this function can be used even from
dynamically loaded plugins.)
Set key with value as metadata in klass. Same as gst_element_class_add_metadata(), but value must be a static string or an inlined string, as it will not be copied. (GStreamer plugins will be made resident once loaded, so this function can be used even from dynamically loaded plugins.)