| /* -*- c++ -*- */ |
| /* @file |
| * @author (C) 2016 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 "uplink_downlink_splitter_impl.h" |
| #include <grgsm/gsmtap.h> |
| #include <grgsm/endian.h> |
| #define BURST_SIZE 148 |
| namespace gr { |
| namespace gsm { |
| |
| uplink_downlink_splitter::sptr |
| uplink_downlink_splitter::make() |
| { |
| return gnuradio::get_initial_sptr |
| (new uplink_downlink_splitter_impl()); |
| } |
| |
| /* |
| * The private constructor |
| */ |
| uplink_downlink_splitter_impl::uplink_downlink_splitter_impl() |
| : gr::block("uplink_downlink_splitter", |
| gr::io_signature::make(0,0,0), |
| gr::io_signature::make(0,0,0)) |
| { |
| message_port_register_in(pmt::mp("in")); |
| message_port_register_out(pmt::mp("uplink")); |
| message_port_register_out(pmt::mp("downlink")); |
| set_msg_handler(pmt::mp("in"), boost::bind(&uplink_downlink_splitter_impl::process_msg, this, _1)); |
| } |
| |
| void uplink_downlink_splitter_impl::process_msg(pmt::pmt_t msg) |
| { |
| gsmtap_hdr * header = (gsmtap_hdr *)(pmt::blob_data(pmt::cdr(msg))); |
| bool uplink_burst = (be16toh(header->arfcn) & 0x4000) ? true : false; |
| if(uplink_burst) |
| { |
| message_port_pub(pmt::mp("uplink"), msg); |
| } else { |
| message_port_pub(pmt::mp("downlink"), msg); |
| } |
| } |
| |
| /* |
| * Our virtual destructor. |
| */ |
| uplink_downlink_splitter_impl::~uplink_downlink_splitter_impl() |
| { |
| } |
| } /* namespace gsm */ |
| } /* namespace gr */ |
| |