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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_nop.h>
#include <gr_io_signature.h>
#include <boost/bind.hpp>
gr_nop_sptr
gr_make_nop (size_t sizeof_stream_item)
{
return gnuradio::get_initial_sptr (new gr_nop (sizeof_stream_item));
}
gr_nop::gr_nop (size_t sizeof_stream_item)
: gr_block ("nop",
gr_make_io_signature (0, -1, sizeof_stream_item),
gr_make_io_signature (0, -1, sizeof_stream_item)),
d_nmsgs_recvd(0)
{
// Arrange to have count_received_msgs called when messages are received.
message_port_register_in(pmt::mp("port"));
set_msg_handler(pmt::mp("port"), boost::bind(&gr_nop::count_received_msgs, this, _1));
}
// Trivial message handler that just counts them.
// (N.B., This feature is used in qa_set_msg_handler)
void
gr_nop::count_received_msgs(pmt::pmt_t msg)
{
d_nmsgs_recvd++;
}
int
gr_nop::general_work (int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
// eat any input that's available
for (unsigned i = 0; i < ninput_items.size (); i++)
consume (i, ninput_items[i]);
return noutput_items;
}
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