| /* -*- 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 <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 */ |