Modifies a pointer to point to a new mini-object. The modification
is done atomically. This version is similar to gst_mini_object_replace()
except that it does not increase the refcount of newdata and thus
takes ownership of newdata.
Either newdata and the value pointed to by olddata may be NULL.
Modifies a pointer to point to a new mini-object. The modification is done atomically. This version is similar to gst_mini_object_replace() except that it does not increase the refcount of newdata and thus takes ownership of newdata. Either newdata and the value pointed to by olddata may be NULL.