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/* -*- c++ -*- */
/*
* @file
* @author 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 <grgsm/gsmtap.h>
#include <grgsm/endian.h>
#include <iterator>
#include <algorithm>
#include "bursts_printer_impl.h"
#include <unistd.h>
#include <iostream>
extern "C" {
#include <osmocom/gsm/a5.h>
}
namespace gr {
namespace gsm {
boost::mutex printer_mutex;
// dummy burst defined in gsm 05.02, section 5.2.6
const int8_t bursts_printer_impl::d_dummy_burst[] = {0,0,0,
1,1,1,1,1,0,1,1,0,1,1,1,0,1,1,0,
0,0,0,0,1,0,1,0,0,1,0,0,1,1,1,0,
0,0,0,0,1,0,0,1,0,0,0,1,0,0,0,0,
0,0,0,1,1,1,1,1,0,0,0,1,1,1,0,0,
0,1,0,1,1,1,0,0,0,1,0,1,1,1,0,0,
0,1,0,1,0,1,1,1,0,1,0,0,1,0,1,0,
0,0,1,1,0,0,1,1,0,0,1,1,1,0,0,1,
1,1,1,0,1,0,0,1,1,1,1,1,0,0,0,1,
0,0,1,0,1,1,1,1,1,0,1,0,1,0,
0,0,0 };
void bursts_printer_impl::bursts_print(pmt::pmt_t msg)
{
pmt::pmt_t header_plus_burst = pmt::cdr(msg);
gsmtap_hdr * header = (gsmtap_hdr *)pmt::blob_data(header_plus_burst);
int8_t * burst = (int8_t *)(pmt::blob_data(header_plus_burst))+sizeof(gsmtap_hdr);
size_t burst_len=pmt::blob_length(header_plus_burst)-sizeof(gsmtap_hdr);
uint32_t frame_nr = be32toh(header->frame_number);
if (d_ignore_dummy_bursts && is_dummy_burst(burst, burst_len))
{
return;
}
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 << ": ";
}
if (d_print_payload_only)
{
for (int ii=0; ii<57; ii++)
{
std::cout << std::setprecision(1) << static_cast<int>(burst[ii + 3]);
}
for (int ii=0; ii<57; ii++)
{
std::cout << std::setprecision(1) << static_cast<int>(burst[ii + 88]);
}
}
else
{
for(int ii=0; ii<burst_len; ii++)
{
std::cout << std::setprecision(1) << static_cast<int>(burst[ii]);
}
}
std::cout << std::endl;
}
bool bursts_printer_impl::is_dummy_burst(int8_t *burst, size_t burst_len)
{
if (burst_len != DUMMY_BURST_LEN)
{
return false;
}
for (int i=0; i<DUMMY_BURST_LEN; i++)
{
if (burst[i] != d_dummy_burst[i])
{
return false;
}
}
return true;
}
bursts_printer::sptr
bursts_printer::make(pmt::pmt_t prepend_string, bool prepend_fnr,
bool prepend_frame_count, bool print_payload_only,
bool ignore_dummy_bursts)
{
return gnuradio::get_initial_sptr
(new bursts_printer_impl(prepend_string, prepend_fnr, prepend_frame_count,
print_payload_only, ignore_dummy_bursts));
}
/*
* The private constructor
*/
bursts_printer_impl::bursts_printer_impl(pmt::pmt_t prepend_string, bool prepend_fnr,
bool prepend_frame_count, bool print_payload_only,
bool ignore_dummy_bursts)
: gr::block("bursts_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_payload_only = print_payload_only;
d_ignore_dummy_bursts = ignore_dummy_bursts;
message_port_register_in(pmt::mp("bursts"));
set_msg_handler(pmt::mp("bursts"), boost::bind(&bursts_printer_impl::bursts_print, this, _1));
}
/*
* Our virtual destructor.
*/
bursts_printer_impl::~bursts_printer_impl()
{
}
} /* namespace gsm */
} /* namespace gr */
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