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/* -*- c++ -*- */
/*
* Copyright 2004,2010 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gr_null_source.h>
#include <gr_io_signature.h>
#include <string.h>
gr_null_source::gr_null_source (size_t sizeof_stream_item)
: gr_sync_block ("null_source",
gr_make_io_signature (0, 0, 0),
gr_make_io_signature (1, 1, sizeof_stream_item))
{
}
gr_null_source_sptr
gr_make_null_source (size_t sizeof_stream_item)
{
return gnuradio::get_initial_sptr (new gr_null_source (sizeof_stream_item));
}
int
gr_null_source::work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
void *optr = (void *) output_items[0];
memset (optr, 0, noutput_items * output_signature()->sizeof_stream_item (0));
return noutput_items;
}
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