Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* then the corresponding entry in next is unchanged.
* @param cmp compare function used to compare elements in the tree,
* API identical to that of Standard C's qsort
+ * It is guranteed that the first and only the first argument to cmp()
+ * will be the key parameter to av_tree_find(), thus it could if the
+ * user wants, be a different type (like an opaque context).
* @return An element with cmp(key, elem) == 0 or NULL if no such element
* exists in the tree.
*/