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-rw-r--r--lib/misc_utils/CMakeLists.txt1
-rw-r--r--lib/misc_utils/trx_burst_if_impl.cc231
-rw-r--r--lib/misc_utils/trx_burst_if_impl.h54
-rw-r--r--lib/misc_utils/udp_socket.cc2
-rw-r--r--lib/misc_utils/udp_socket.h69
5 files changed, 1 insertions, 356 deletions
diff --git a/lib/misc_utils/CMakeLists.txt b/lib/misc_utils/CMakeLists.txt
index c81a92d..63effe5 100644
--- a/lib/misc_utils/CMakeLists.txt
+++ b/lib/misc_utils/CMakeLists.txt
@@ -36,7 +36,6 @@ add_sources(
time_spec.cc
fn_time.cc
udp_socket.cc
- trx_burst_if_impl.cc
burst_to_fn_time_impl.cc
)
diff --git a/lib/misc_utils/trx_burst_if_impl.cc b/lib/misc_utils/trx_burst_if_impl.cc
deleted file mode 100644
index 8f458b0..0000000
--- a/lib/misc_utils/trx_burst_if_impl.cc
+++ /dev/null
@@ -1,231 +0,0 @@
-/* -*- c++ -*- */
-/* @file
- * @author Vadim Yanitskiy <axilirator@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 <boost/lexical_cast.hpp>
-
-#include "udp_socket.h"
-#include "trx_burst_if_impl.h"
-
-#define BURST_SIZE 148
-#define DATA_IF_MTU 160
-
-/**
- * 41-bit RACH synchronization sequence
- * GSM 05.02 Chapter 5.2.7 Access burst (AB)
- */
-static uint8_t rach_synch_seq[] = {
- 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1,
- 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0,
- 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
-};
-
-namespace gr {
- namespace gsm {
-
- trx_burst_if::sptr
- trx_burst_if::make(
- const std::string &remote_addr,
- const std::string &base_port)
- {
- int base_port_int = boost::lexical_cast<int> (base_port);
-
- return gnuradio::get_initial_sptr
- (new trx_burst_if_impl(remote_addr, base_port_int));
- }
-
- /*
- * The private constructor
- */
- trx_burst_if_impl::trx_burst_if_impl(
- const std::string &remote_addr,
- int base_port
- ) : gr::block("trx_burst_if",
- gr::io_signature::make(0, 0, 0),
- gr::io_signature::make(0, 0, 0))
- {
- message_port_register_in(pmt::mp("bursts"));
- message_port_register_out(pmt::mp("bursts"));
-
- // Bind a port handler
- set_msg_handler(pmt::mp("bursts"),
- boost::bind(&trx_burst_if_impl::handle_dl_burst, this, _1));
-
- // Prepare port numbers
- std::string data_src_port = boost::lexical_cast<std::string> (base_port + 2);
- std::string data_dst_port = boost::lexical_cast<std::string> (base_port + 102);
-
- // Init DATA interface
- d_data_sock = new udp_socket(remote_addr,
- data_src_port, data_dst_port, DATA_IF_MTU);
-
- // Bind DATA interface handler
- d_data_sock->udp_rx_handler = boost::bind(
- &trx_burst_if_impl::handle_ul_burst, this, _1, _2);
- }
-
- /*
- * Our virtual destructor.
- */
- trx_burst_if_impl::~trx_burst_if_impl()
- {
- // Release all UDP sockets and free memory
- delete d_data_sock;
- }
-
- /*
- * Check if burst is a RACH burst
- */
- bool trx_burst_if_impl::detect_rach(uint8_t *burst)
- {
- // Compare synchronization sequence
- for (int i = 0; i < 41; i++)
- if (burst[i + 8] != rach_synch_seq[i])
- return false;
-
- // Make sure TB and GP are filled by 0x00
- for (int i = 0; i < 63; i++)
- if (burst[i + 85] != 0x00)
- return false;
-
- return true;
- }
-
- /*
- * Create an UDP payload with burst bits
- * and some channel data.
- */
- void
- trx_burst_if_impl::burst_pack(pmt::pmt_t msg, uint8_t *buf)
- {
- pmt::pmt_t header_plus_burst = pmt::cdr(msg);
-
- // Extract GSMTAP header from message
- gsmtap_hdr *header = (gsmtap_hdr *)
- pmt::blob_data(header_plus_burst);
-
- // Pack timeslot index
- buf[0] = header->timeslot;
-
- // Extract frame number
- uint32_t frame_nr = be32toh(header->frame_number);
-
- // Pack frame number
- buf[1] = (frame_nr >> 24) & 0xff;
- buf[2] = (frame_nr >> 16) & 0xff;
- buf[3] = (frame_nr >> 8) & 0xff;
- buf[4] = (frame_nr >> 0) & 0xff;
-
- // Pack RSSI (-dBm)
- buf[5] = -(uint8_t) header->signal_dbm;
-
- // Pack correlator timing offset (TOA)
- // FIXME: where to find this value?
- buf[6] = 0;
- buf[7] = 0;
-
- // Extract bits {0..1} from message
- // Despite GR-GSM uses int8_t, they are not real sbits {-127..127}
- uint8_t *burst = (uint8_t *)
- (pmt::blob_data(header_plus_burst)) + sizeof(gsmtap_hdr);
-
- // Convert to transceiver interface specific bits {255..0}
- for (int i = 0; i < 148; i++)
- buf[8 + i] = burst[i] ? 255 : 0;
-
- // Fill two unused bytes
- buf[156] = 0x00;
- buf[157] = 0x00;
- }
-
- void
- trx_burst_if_impl::handle_dl_burst(pmt::pmt_t msg)
- {
- // 8 bytes of header + 148 bytes of burst
- // + two unused, but required bytes
- // otherwise bursts would be rejected
- uint8_t buf[158];
-
- // Compose a new UDP payload with burst
- burst_pack(msg, buf);
-
- // Send a burst
- d_data_sock->udp_send(buf, 158);
- }
-
- void
- trx_burst_if_impl::handle_ul_burst(uint8_t *payload, size_t len)
- {
- // Check length according to the protocol
- if (len != 154)
- return;
-
- /* Make sure TS index is correct */
- if (payload[0] >= 8)
- return;
-
- /* Unpack and check frame number */
- uint32_t fn = (payload[1] << 24)
- | (payload[2] << 16)
- | (payload[3] << 8)
- | payload[4];
-
- if (fn >= 2715648)
- return;
-
- // Prepare a buffer for GSMTAP header and burst
- uint8_t buf[sizeof(gsmtap_hdr) + BURST_SIZE];
-
- // Set up pointer to GSMTAP header structure
- struct gsmtap_hdr *header = (struct gsmtap_hdr *) buf;
- memset(header, 0x00, sizeof(struct gsmtap_hdr));
-
- // Fill in basic info
- header->version = GSMTAP_VERSION;
- header->hdr_len = sizeof(gsmtap_hdr) / 4;
- header->type = GSMTAP_TYPE_UM_BURST;
-
- // Set timeslot index and frame number
- header->timeslot = payload[0];
- header->frame_number = htobe32(fn);
-
- // Check if one is a RACH burst
- header->sub_type = detect_rach(payload + 6) ?
- GSMTAP_BURST_ACCESS : GSMTAP_BURST_NORMAL;
-
- // Copy burst bits (0 & 1) for source message
- memcpy(buf + sizeof(gsmtap_hdr), payload + 6, BURST_SIZE);
-
- // Create a pmt blob
- pmt::pmt_t blob = pmt::make_blob(buf, sizeof(gsmtap_hdr) + BURST_SIZE);
- pmt::pmt_t msg = pmt::cons(pmt::PMT_NIL, blob);
-
- /* Send a message to the output */
- message_port_pub(pmt::mp("bursts"), msg);
- }
-
- } /* namespace gsm */
-} /* namespace gr */
diff --git a/lib/misc_utils/trx_burst_if_impl.h b/lib/misc_utils/trx_burst_if_impl.h
deleted file mode 100644
index 35f939c..0000000
--- a/lib/misc_utils/trx_burst_if_impl.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/* -*- c++ -*- */
-/* @file
- * @author Vadim Yanitskiy <axilirator@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_TRX_BURST_IF_IMPL_H
-#define INCLUDED_GRGSM_TRX_BURST_IF_IMPL_H
-
-#include <stddef.h>
-
-#include <grgsm/gsmtap.h>
-#include <grgsm/misc_utils/trx_burst_if.h>
-
-namespace gr {
- namespace gsm {
-
- class trx_burst_if_impl : public trx_burst_if
- {
- private:
- udp_socket *d_data_sock;
-
- bool detect_rach(uint8_t *burst);
- void burst_pack(pmt::pmt_t msg, uint8_t *buf);
-
- public:
- trx_burst_if_impl(const std::string &remote_addr, int base_port);
- ~trx_burst_if_impl();
-
- void handle_dl_burst(pmt::pmt_t msg);
- void handle_ul_burst(uint8_t *payload, size_t len);
- };
-
- } // namespace gsm
-} // namespace gr
-
-#endif /* INCLUDED_GRGSM_TRX_BURST_IF_IMPL_H */
-
diff --git a/lib/misc_utils/udp_socket.cc b/lib/misc_utils/udp_socket.cc
index 5c689c7..73393a0 100644
--- a/lib/misc_utils/udp_socket.cc
+++ b/lib/misc_utils/udp_socket.cc
@@ -30,7 +30,7 @@
#include <pmt/pmt.h>
#include <boost/lexical_cast.hpp>
-#include "udp_socket.h"
+#include "grgsm/misc_utils/udp_socket.h"
using boost::asio::ip::udp;
diff --git a/lib/misc_utils/udp_socket.h b/lib/misc_utils/udp_socket.h
deleted file mode 100644
index 15b2c66..0000000
--- a/lib/misc_utils/udp_socket.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2013 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * GNU Radio 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.
- *
- * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street,
- * Boston, MA 02110-1301, USA.
- */
-
-#ifndef INCLUDED_GRGSM_TRX_UDP_SOCKET_H
-#define INCLUDED_GRGSM_TRX_UDP_SOCKET_H
-
-#include <gnuradio/thread/thread.h>
-
-#include <boost/function.hpp>
-#include <boost/array.hpp>
-#include <boost/asio.hpp>
-#include <boost/bind.hpp>
-#include <pmt/pmt.h>
-
-namespace gr {
- namespace gsm {
-
- class udp_socket
- {
- private:
- boost::asio::io_service d_io_service;
- std::vector<char> d_rxbuf;
- gr::thread::thread d_thread;
- bool d_started;
- bool d_finished;
-
- boost::asio::ip::udp::endpoint d_udp_endpoint_rx;
- boost::asio::ip::udp::endpoint d_udp_endpoint_tx;
- boost::shared_ptr<boost::asio::ip::udp::socket> d_udp_socket;
-
- void handle_udp_read(const boost::system::error_code& error,
- size_t bytes_transferred);
- void run_io_service(void);
-
- public:
- udp_socket(
- const std::string &remote_addr,
- const std::string &src_port,
- const std::string &dst_port,
- size_t mtu);
- ~udp_socket();
-
- void udp_send(uint8_t *data, size_t len);
- boost::function<void (uint8_t *, size_t)> udp_rx_handler;
- };
-
- } /* namespace gsm */
-} /* namespace gr */
-
-#endif /* INCLUDED_GRGSM_TRX_UDP_SOCKET_H */