/* -*- c++ -*- */
/*
* Copyright 2004,2009,2012,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_HEAD_H
#define INCLUDED_GR_HEAD_H
#include <gnuradio/blocks/api.h>
#include <gnuradio/sync_block.h>
#include <stddef.h> // size_t
namespace gr {
namespace blocks {
/*!
* \brief copies the first N items to the output then signals done
* \ingroup misc_blk
*
* \details
* Useful for building test cases
*/
class BLOCKS_API head : virtual public sync_block
{
public:
// gr::blocks::head::sptr
typedef boost::shared_ptr<head> sptr;
static sptr make(size_t sizeof_stream_item, uint64_t nitems);
virtual void reset() = 0;
virtual void set_length(uint64_t nitems) = 0;
};
} /* namespace blocks */
} /* namespace gr */
#endif /* INCLUDED_GR_HEAD_H */