23#ifndef INCLUDED_GR_HEAD_H
24#define INCLUDED_GR_HEAD_H
44 typedef boost::shared_ptr<head>
sptr;
46 static sptr make(
size_t sizeof_stream_item, uint64_t nitems);
copies the first N items to the output then signals done
Definition: head.h:41
virtual void set_length(uint64_t nitems)=0
boost::shared_ptr< head > sptr
Definition: head.h:44
static sptr make(size_t sizeof_stream_item, uint64_t nitems)
synchronous 1:1 input to output with history
Definition: sync_block.h:38
#define BLOCKS_API
Definition: gr-blocks/include/gnuradio/blocks/api.h:30
Include this header to use the message passing features.
Definition: basic_block.h:45