GNU Radio Manual and C++ API Reference 3.8.5.0
The Free & Open Software Radio Ecosystem
 
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null_source.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2004,2010,2013 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#ifndef INCLUDED_GR_NULL_SOURCE_H
24#define INCLUDED_GR_NULL_SOURCE_H
25
26#include <gnuradio/blocks/api.h>
27#include <gnuradio/sync_block.h>
28
29namespace gr {
30namespace blocks {
31
32/*!
33 * \brief A source of zeros used mainly for testing.
34 * \ingroup misc_blk
35 */
36class BLOCKS_API null_source : virtual public sync_block
37{
38public:
39 // gr::blocks::null_source::sptr
40 typedef boost::shared_ptr<null_source> sptr;
41
42 /*!
43 * Build a null source block.
44 *
45 * \param sizeof_stream_item size of the stream items in bytes.
46 */
47 static sptr make(size_t sizeof_stream_item);
48};
49
50} /* namespace blocks */
51} /* namespace gr */
52
53#endif /* INCLUDED_GR_NULL_SOURCE_H */
A source of zeros used mainly for testing.
Definition null_source.h:37
boost::shared_ptr< null_source > sptr
Definition null_source.h:40
static sptr make(size_t sizeof_stream_item)
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
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition basic_block.h:46