Dispatches a query to a pad. The query should have been allocated by the
caller via one of the type-specific allocation functions in gstquery.h. The
element is responsible for filling the query with an appropriate response,
which should then be parsed with a type-specific query parsing function.
Again, the caller is responsible for both the allocation and deallocation of
the query structure.
Dispatches a query to a pad. The query should have been allocated by the caller via one of the type-specific allocation functions in gstquery.h. The element is responsible for filling the query with an appropriate response, which should then be parsed with a type-specific query parsing function. Again, the caller is responsible for both the allocation and deallocation of the query structure.