-#if FF_API_CHILD_CLASS_NEXT
-FF_DISABLE_DEPRECATION_WARNINGS
-const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
-{
- if (parent->child_class_next)
- return parent->child_class_next(prev);
- return NULL;
-}
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-