@return the current maximum size that will ever be passed to the @a
process_callback. It should only be used *before* the client has
been activated. This size may change, clients that depend on it
must register a @a bufsize_callback so they will be notified if it
does.
@return the current maximum size that will ever be passed to the @a process_callback. It should only be used *before* the client has been activated. This size may change, clients that depend on it must register a @a bufsize_callback so they will be notified if it does.
@see jack_set_buffer_size_callback()