null_source.h

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/* -*- c++ -*- */
/*
 * Copyright 2004,2010,2013 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_NULL_SOURCE_H
#define INCLUDED_GR_NULL_SOURCE_H

#include <gnuradio/blocks/api.h>
#include <gnuradio/sync_block.h>

namespace gr {
namespace blocks {

/*!
 * \brief A source of zeros used mainly for testing.
 * \ingroup misc_blk
 */
class BLOCKS_API null_source : virtual public sync_block
{
public:
    // gr::blocks::null_source::sptr
    typedef boost::shared_ptr<null_source> sptr;

    /*!
     * Build a null source block.
     *
     * \param sizeof_stream_item size of the stream items in bytes.
     */
    static sptr make(size_t sizeof_stream_item);
};

} /* namespace blocks */
} /* namespace gr */

#endif /* INCLUDED_GR_NULL_SOURCE_H */