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/* -*- c++ -*- */
/*
* @file
* @author (C) 2014 by Piotr Krysik <ptrkrysik@gmail.com>
* @section LICENSE
*
* Gr-gsm 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.
*
* Gr-gsm 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 gr-gsm; 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 <gnuradio/io_signature.h>
#include <stdio.h>
#include "message_printer_impl.h"
#include "grgsm/gsmtap.h"
#include <grgsm/endian.h>
extern "C" {
#include <osmocom/gsm/a5.h>
}
namespace gr {
namespace gsm {
void message_printer_impl::message_print(pmt::pmt_t msg)
{
pmt::pmt_t message_plus_header_blob = pmt::cdr(msg);
uint8_t * message_plus_header = (uint8_t *)pmt::blob_data(message_plus_header_blob);
size_t message_plus_header_len=pmt::blob_length(message_plus_header_blob);
gsmtap_hdr * header = (gsmtap_hdr *)message_plus_header;
uint32_t frame_nr = be32toh(header->frame_number);
std::cout << d_prepend_string;
if (d_prepend_fnr)
{
std::cout << frame_nr;
}
if (d_prepend_fnr && d_prepend_frame_count)
{
std::cout << " ";
}
if (d_prepend_frame_count)
{
// calculate fn count using libosmogsm
std::cout << osmo_a5_fn_count(frame_nr);
}
if (d_prepend_fnr || d_prepend_frame_count)
{
std::cout << ": ";
}
int start_index = sizeof(gsmtap_hdr);
if (d_print_gsmtap_header)
{
start_index = 0;
}
for(int ii=start_index; ii<message_plus_header_len; ii++)
{
printf(" %02x", message_plus_header[ii]);
}
std::cout << std::endl;
}
message_printer::sptr
message_printer::make(pmt::pmt_t prepend_string, bool prepend_fnr,
bool prepend_frame_count, bool print_gsmtap_header)
{
return gnuradio::get_initial_sptr
(new message_printer_impl(prepend_string, prepend_fnr,
prepend_frame_count, print_gsmtap_header));
}
/*
* The private constructor
*/
message_printer_impl::message_printer_impl(pmt::pmt_t prepend_string, bool prepend_fnr,
bool prepend_frame_count, bool print_gsmtap_header)
: gr::block("message_printer",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(0, 0, 0))
{
d_prepend_string = prepend_string;
d_prepend_fnr = prepend_fnr;
d_prepend_frame_count = prepend_frame_count;
d_print_gsmtap_header = print_gsmtap_header;
message_port_register_in(pmt::mp("msgs"));
set_msg_handler(pmt::mp("msgs"), boost::bind(&message_printer_impl::message_print, this, _1));
}
/*
* Our virtual destructor.
*/
message_printer_impl::~message_printer_impl()
{
}
} /* namespace gsm */
} /* namespace gr */
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