Retrieves the first @item available on the @queue. If the queue is currently empty, the call will block until at least one item is available, OR the @queue is set to the flushing state. MT safe.
pointer to store the returned #GstDataQueueItem.
%TRUE if an @item was successfully retrieved from the @queue.
1.2
See Implementation
Retrieves the first @item available on the @queue. If the queue is currently empty, the call will block until at least one item is available, OR the @queue is set to the flushing state. MT safe.