diff options
author | Piotr Krysik <ptrkrysik@gmail.com> | 2016-08-16 16:05:23 +0200 |
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committer | Piotr Krysik <ptrkrysik@gmail.com> | 2016-08-16 16:05:23 +0200 |
commit | efebbde76fb2603fe45b8b43b944d24fafbfb4ad (patch) | |
tree | c0445f622cdf4682b211609dacc8eb2fb7fcb57e /lib | |
parent | 0da08a3a8e814a43da963562efe46bfc5048aec8 (diff) |
Added uplink/downlink splitter
Diffstat (limited to 'lib')
-rw-r--r-- | lib/CMakeLists.txt | 1 | ||||
-rw-r--r-- | lib/uplink_downlink_filter_impl.cc | 77 | ||||
-rw-r--r-- | lib/uplink_downlink_filter_impl.h | 43 |
3 files changed, 121 insertions, 0 deletions
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt index 73fef92..402ad75 100644 --- a/lib/CMakeLists.txt +++ b/lib/CMakeLists.txt @@ -66,6 +66,7 @@ list(APPEND grgsm_sources qa_utils/message_source_impl.cc qa_utils/message_sink_impl.cc decryption/decryption_impl.cc + uplink_downlink_filter_impl.cc ) diff --git a/lib/uplink_downlink_filter_impl.cc b/lib/uplink_downlink_filter_impl.cc new file mode 100644 index 0000000..b326fff --- /dev/null +++ b/lib/uplink_downlink_filter_impl.cc @@ -0,0 +1,77 @@ +/* -*- 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 "uplink_downlink_filter_impl.h" +#include <grgsm/gsmtap.h> +#define BURST_SIZE 148 +namespace gr { + namespace grgsm { + + uplink_downlink_filter::sptr + uplink_downlink_filter::make() + { + return gnuradio::get_initial_sptr + (new uplink_downlink_filter_impl()); + } + + /* + * The private constructor + */ + uplink_downlink_filter_impl::uplink_downlink_filter_impl() + : gr::block("uplink_downlink_filter", + 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_filter_impl::process_msg, this, _1)); + } + + void uplink_downlink_filter_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_filter_impl::~uplink_downlink_filter_impl() + { + } + } /* namespace grgsm */ +} /* namespace gr */ + diff --git a/lib/uplink_downlink_filter_impl.h b/lib/uplink_downlink_filter_impl.h new file mode 100644 index 0000000..c510e29 --- /dev/null +++ b/lib/uplink_downlink_filter_impl.h @@ -0,0 +1,43 @@ +/* -*- 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. + * + */ + +#ifndef INCLUDED_GRGSM_UPLINK_DOWNLINK_FILTER_IMPL_H +#define INCLUDED_GRGSM_UPLINK_DOWNLINK_FILTER_IMPL_H + +#include <grgsm/uplink_downlink_filter.h> + +namespace gr { + namespace grgsm { + + class uplink_downlink_filter_impl : public uplink_downlink_filter + { + public: + uplink_downlink_filter_impl(); + ~uplink_downlink_filter_impl(); + + void process_msg(pmt::pmt_t msg); + }; + } // namespace grgsm +} // namespace gr + +#endif /* INCLUDED_GRGSM_UPLINK_DOWNLINK_FILTER_IMPL_H */ + |