pub unsafe extern "C" fn libraw_set_dataerror_handler(
arg1: *mut libraw_data_t,
func: data_callback,
datap: *mut c_void,
)pub unsafe extern "C" fn libraw_set_dataerror_handler(
arg1: *mut libraw_data_t,
func: data_callback,
datap: *mut c_void,
)