%pointer_cast(gpointer, struct sr_dev_inst *, gpointer_to_sr_dev_inst_ptr);
%pointer_cast(void *, struct sr_datafeed_logic *, void_ptr_to_sr_datafeed_logic_ptr)
%pointer_cast(void *, struct sr_datafeed_analog *, void_ptr_to_sr_datafeed_analog_ptr)
+%pointer_cast(void *, struct sr_probe *, void_ptr_to_sr_probe_ptr)
+%pointer_cast(void *, struct sr_probe_group *, void_ptr_to_sr_probe_group_ptr)