forked from sdr/gr-osmosdr
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2004,2010,2013 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "null_source_impl.h"
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#include <gnuradio/io_signature.h>
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#include <string.h>
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namespace gr {
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namespace blocks {
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null_source::sptr
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null_source::make(size_t sizeof_stream_item)
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{
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return gnuradio::get_initial_sptr
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(new null_source_impl(sizeof_stream_item));
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}
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null_source_impl::null_source_impl (size_t sizeof_stream_item)
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: sync_block("null_source",
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io_signature::make(0, 0, 0),
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io_signature::make(1, 1, sizeof_stream_item))
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{
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}
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null_source_impl::~null_source_impl()
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{
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}
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int
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null_source_impl::work(int noutput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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{
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void *optr = (void*)output_items[0];
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memset(optr, 0, noutput_items * output_signature()->sizeof_stream_item(0));
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return noutput_items;
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}
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} /* namespace blocks */
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} /* namespace gr */
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