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/* -*- c++ -*- */
/*
* Copyright 2012 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_random_pdu.h>
#include <gr_io_signature.h>
#include <cstdio>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdexcept>
#include <string.h>
#include <iostream>
#include <vector>
// public constructor that returns a shared_ptr
gr_random_pdu_sptr
gr_make_random_pdu (int items_min, int items_max)
{
return gnuradio::get_initial_sptr(new gr_random_pdu(items_min, items_max));
}
gr_random_pdu::gr_random_pdu (int items_min, int items_max)
: gr_block("random_pdu",
gr_make_io_signature(0, 0, 0),
gr_make_io_signature(0, 0, 0)),
urange(items_min, items_max),
brange(0, 255),
rvar(rng, urange),
bvar(rng, brange)
{
message_port_register_out(pmt::mp("pdus"));
message_port_register_in(pmt::mp("generate"));
set_msg_handler(pmt::mp("generate"), boost::bind(&gr_random_pdu::generate_pdu, this, _1));
}
bool gr_random_pdu::start(){
output_random();
return true;
}
void gr_random_pdu::output_random(){
// pick a random vector length
int len = rvar();
// fill it with random bytes
std::vector<unsigned char> vec;
for(int i=0; i<len; i++){
vec.push_back((unsigned char) bvar());
}
// send the vector
pmt::pmt_t vecpmt( pmt::pmt_make_blob( &vec[0], len ) );
pmt::pmt_t pdu( pmt::pmt_cons( pmt::PMT_NIL, vecpmt ) );
message_port_pub( pmt::mp("pdus"), pdu );
std::cout << "sending new random vector of length " << len << "\n";
}
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