What happens when you assign input to output in a general_work call,
out[ii]=in[ii], but don’t call produce? Is the stuff you dumped into
lost when general_work returns WORK_CALLED_PRODUCE?
My minds eye sees the out variable as a secondary local buffer for
general_work. You dump stuff in there while general_work has scope, and
transfer the contents of this buffer to the gnuradio block buffer when
call produce. Am I understanding this correctly?