GF_Err gf_filter_define_args(GF_Filter *filter, GF_FilterArgs *args)
{
	if (!filter) return GF_BAD_PARAM;
	filter->instance_args = args;
	return GF_OK;
}
GF_Err gf_filter_define_args(GF_Filter *filter, GF_FilterArgs *args)
{
	if (!filter) return GF_BAD_PARAM;
	filter->instance_args = args;
	return GF_OK;
}