Add tist support for EDI output, take code from odr-mmbtools-common

27 files changed, 2319 insertions, 643 deletions

diff --git a/contrib/ClockTAI.cpp b/contrib/ClockTAI.cpp
new file mode 100644
index 0000000..2656345
--- /dev/null
+++ b/contrib/ClockTAI.cpp
@@ -0,0 +1,607 @@
+/*
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+   2011, 2012 Her Majesty the Queen in Right of Canada (Communications
+   Research Center Canada)
+
+   Copyright (C) 2019
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+    http://www.opendigitalradio.org
+   */
+/*
+   This file is part of the ODR-mmbTools.
+
+   This program 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 of the
+   License, or (at your option) any later version.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This file downloads the TAI-UTC bulletins from the from IETF and parses them
+ * so that correct time can be communicated in EDI timestamps.
+ *
+ * This file contains self-test code that can be executed by running
+ *  g++ -g -Wall -DTAI_TEST -DHAVE_CURL -std=c++11 -lcurl -pthread \
+ *  ClockTAI.cpp Log.cpp RemoteControl.cpp -lboost_system -o taitest && ./taitest
+ */
+
+#ifdef HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#include "ClockTAI.h"
+#include "Log.h"
+
+#include <ctime>
+#include <cstdio>
+#include <cerrno>
+#if SUPPORT_SETTING_CLOCK_TAI
+#  include <sys/timex.h>
+#endif
+#ifdef HAVE_CURL
+#  include <curl/curl.h>
+#endif
+#include <array>
+#include <string>
+#include <iostream>
+#include <algorithm>
+#include <regex>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+using namespace std;
+
+#ifdef DOWNLOADED_IN_THE_PAST_TEST
+static bool wait_longer = true;
+#endif
+
+constexpr int download_retry_interval_hours = 1;
+
+// Offset between NTP time and POSIX time:
+// timestamp_unix = timestamp_ntp - ntp_unix_offset
+const int64_t ntp_unix_offset = 2208988800L;
+
+// leap seconds insertion bulletin is available from the IETF and in the TZ
+// distribution
+static array<const char*, 2> default_tai_urls = {
+    "https://www.ietf.org/timezones/data/leap-seconds.list",
+    "https://raw.githubusercontent.com/eggert/tz/master/leap-seconds.list",
+};
+
+// According to the Filesystem Hierarchy Standard, the data in
+// /var/tmp "must not be deleted when the system is booted."
+static const char *tai_cache_location = "/var/tmp/odr-leap-seconds.cache";
+
+// read TAI offset from a valid bulletin in IETF format
+static int parse_ietf_bulletin(const std::string& bulletin)
+{
+    // Example Line:
+    // 3692217600	37	# 1 Jan 2017
+    //
+    // NTP timestamp<TAB>leap seconds<TAB># some comment
+    // The NTP timestamp starts at epoch 1.1.1900.
+    // The difference between NTP timestamps and unix epoch is 70
+    // years i.e. 2208988800 seconds
+
+    std::regex regex_bulletin(R"(([0-9]+)\s+([0-9]+)\s+#.*)");
+
+    time_t now = time(nullptr);
+
+    int tai_utc_offset = 0;
+
+    int tai_utc_offset_valid = false;
+
+    stringstream ss(bulletin);
+
+    /* We cannot just take the last line, because it might
+     * be in the future, announcing an upcoming leap second.
+     *
+     * So we need to look at the current date, and compare it
+     * with the date of the leap second.
+     */
+    for (string line; getline(ss, line); ) {
+
+        std::smatch bulletin_entry;
+
+        bool is_match = std::regex_search(line, bulletin_entry, regex_bulletin);
+        if (is_match) {
+            if (bulletin_entry.size() != 3) {
+                throw runtime_error(
+                        "Incorrect number of matched TAI IETF bulletin entries");
+            }
+            const string bulletin_ntp_timestamp(bulletin_entry[1]);
+            const string bulletin_offset(bulletin_entry[2]);
+
+            const int64_t timestamp_unix =
+                std::atoll(bulletin_ntp_timestamp.c_str()) - ntp_unix_offset;
+
+            const int offset = std::atoi(bulletin_offset.c_str());
+            // Ignore entries announcing leap seconds in the future
+            if (timestamp_unix < now) {
+                tai_utc_offset = offset;
+                tai_utc_offset_valid = true;
+            }
+#if TAI_TEST
+            else {
+                cerr << "IETF Ignoring offset " << bulletin_offset <<
+                    " at TS " << bulletin_ntp_timestamp <<
+                    " in the future" << endl;
+            }
+#endif
+        }
+    }
+
+    if (not tai_utc_offset_valid) {
+        throw runtime_error("No data in TAI bulletin");
+    }
+
+    return tai_utc_offset;
+}
+
+
+struct bulletin_state {
+    bool valid = false;
+    int64_t expiry = 0;
+    int offset = 0;
+
+    bool usable() const { return valid and expiry > 0; }
+};
+
+static bulletin_state parse_bulletin(const string& bulletin)
+{
+    // The bulletin contains one line that specifies an expiration date
+    // in NTP time. If that point in time is in the future, we consider
+    // the bulletin valid.
+    //
+    // The entry looks like this:
+    //#@	3707596800
+
+    bulletin_state ret;
+
+    std::regex regex_expiration(R"(#@\s+([0-9]+))");
+
+    time_t now = time(nullptr);
+
+    stringstream ss(bulletin);
+
+    for (string line; getline(ss, line); ) {
+        std::smatch bulletin_entry;
+
+        bool is_match = std::regex_search(line, bulletin_entry, regex_expiration);
+        if (is_match) {
+            if (bulletin_entry.size() != 2) {
+                throw runtime_error(
+                        "Incorrect number of matched TAI IETF bulletin expiration");
+            }
+            const string expiry_data_str(bulletin_entry[1]);
+            const int64_t expiry_unix =
+                std::atoll(expiry_data_str.c_str()) - ntp_unix_offset;
+
+#ifdef TAI_TEST
+            etiLog.level(info) << "Bulletin expires in " << expiry_unix - now;
+#endif
+            ret.expiry = expiry_unix - now;
+            try {
+                ret.offset = parse_ietf_bulletin(bulletin);
+                ret.valid = true;
+            }
+            catch (const runtime_error& e) {
+                etiLog.level(warn) << "Bulletin expiry ok but parse error: " << e.what();
+            }
+            break;
+        }
+    }
+    return ret;
+}
+
+
+// callback that receives data from cURL
+static size_t fill_bulletin(char *ptr, size_t size, size_t nmemb, void *ctx)
+{
+    auto *bulletin = reinterpret_cast<stringstream*>(ctx);
+
+    size_t len = size * nmemb;
+    for (size_t i = 0; i < len; i++) {
+        *bulletin << ptr[i];
+    }
+    return len;
+}
+
+static string download_tai_utc_bulletin(const char* url)
+{
+    stringstream bulletin;
+
+#ifdef HAVE_CURL
+    CURL *curl;
+    CURLcode res;
+
+    curl = curl_easy_init();
+    if (curl) {
+        curl_easy_setopt(curl, CURLOPT_URL, url);
+        /* Tell libcurl to follow redirection */
+        curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fill_bulletin);
+        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &bulletin);
+
+        res = curl_easy_perform(curl);
+        /* always cleanup ! */
+        curl_easy_cleanup(curl);
+
+        if (res != CURLE_OK) {
+            throw runtime_error( "TAI-UTC bulletin download failed: " +
+                    string(curl_easy_strerror(res)));
+        }
+    }
+    return bulletin.str();
+#else
+    throw runtime_error("Cannot download TAI Clock information without cURL");
+#endif // HAVE_CURL
+}
+
+static string load_bulletin_from_file(const char* cache_filename)
+{
+    int fd = open(cache_filename, O_RDWR); // lockf requires O_RDWR
+    if (fd == -1) {
+        etiLog.level(error) << "TAI-UTC bulletin open cache for reading: " <<
+            strerror(errno);
+        return "";
+    }
+
+    lseek(fd, 0, SEEK_SET);
+
+    vector<char> buf(1024);
+    vector<char> new_bulletin_data;
+
+    ssize_t ret = lockf(fd, F_LOCK, 0);
+    if (ret == 0) {
+        // exclusive lock acquired
+
+        do {
+            ret = read(fd, buf.data(), buf.size());
+
+            if (ret == -1) {
+                close(fd);
+                etiLog.level(error) << "TAI-UTC bulletin read cache: " <<
+                        strerror(errno);
+                return "";
+            }
+
+            copy(buf.data(), buf.data() + ret, back_inserter(new_bulletin_data));
+        } while (ret > 0);
+
+        close(fd);
+
+        return string{new_bulletin_data.data(), new_bulletin_data.size()};
+    }
+    else {
+        etiLog.level(error) <<
+            "TAI-UTC bulletin acquire cache lock for reading: " <<
+            strerror(errno);
+        close(fd);
+    }
+    return "";
+}
+
+ClockTAI::ClockTAI(const std::vector<std::string>& bulletin_urls) :
+    RemoteControllable("clocktai")
+{
+    RC_ADD_PARAMETER(expiry, "Number of seconds until TAI Bulletin expires");
+
+    if (bulletin_urls.empty()) {
+        etiLog.level(debug) << "Initialising default TAI Bulletin URLs";
+        for (const auto url : default_tai_urls) {
+            m_bulletin_urls.push_back(url);
+        }
+    }
+    else {
+        etiLog.level(debug) << "Initialising user-configured TAI Bulletin URLs";
+        m_bulletin_urls = bulletin_urls;
+    }
+
+    for (const auto url : m_bulletin_urls) {
+        etiLog.level(info) << "TAI Bulletin URL: '" << url << "'";
+    }
+}
+
+int ClockTAI::get_valid_offset()
+{
+    int offset = 0;
+    bool offset_valid = false;
+
+    std::unique_lock<std::mutex> lock(m_data_mutex);
+
+    const auto state = parse_bulletin(m_bulletin);
+    if (state.usable()) {
+#if TAI_TEST
+        etiLog.level(info) << "Bulletin already valid";
+#endif
+        offset = state.offset;
+        offset_valid = true;
+    }
+    else {
+        const auto cache_bulletin = load_bulletin_from_file(tai_cache_location);
+#if TAI_TEST
+        etiLog.level(info) << "Loaded cache bulletin with " <<
+            std::count_if(cache_bulletin.cbegin(), cache_bulletin.cend(),
+                    [](const char c){ return c == '\n'; }) << " lines";
+#endif
+        const auto cache_state = parse_bulletin(cache_bulletin);
+
+        if (cache_state.usable()) {
+            m_bulletin = cache_bulletin;
+            offset = cache_state.offset;
+            offset_valid = true;
+#if TAI_TEST
+            etiLog.level(info) << "Bulletin from cache valid with offset=" << offset;
+#endif
+        }
+        else {
+            for (const auto url : m_bulletin_urls) {
+                try {
+#if TAI_TEST
+                    etiLog.level(info) << "Load bulletin from " << url;
+#endif
+                    const auto new_bulletin = download_tai_utc_bulletin(url.c_str());
+                    const auto new_state = parse_bulletin(new_bulletin);
+                    if (new_state.usable()) {
+                        m_bulletin = new_bulletin;
+                        offset = new_state.offset;
+                        offset_valid = true;
+
+                        etiLog.level(debug) << "Loaded valid TAI Bulletin from " <<
+                            url << " giving offset=" << offset;
+                    }
+                    else {
+                        etiLog.level(debug) << "Skipping invalid TAI bulletin from "
+                            << url;
+                    }
+                }
+                catch (const runtime_error& e) {
+                    etiLog.level(warn) <<
+                        "TAI-UTC offset could not be retrieved from " <<
+                        url << " : " << e.what();
+                }
+
+                if (offset_valid) {
+                    update_cache(tai_cache_location);
+                    break;
+                }
+            }
+        }
+    }
+
+    if (offset_valid) {
+        // With the current evolution of the offset, we're probably going
+        // to reach 500 long after DAB gets replaced by another standard.
+        if (offset < 0 or offset > 500) {
+            stringstream ss;
+            ss << "TAI offset " << offset << " out of range";
+            throw range_error(ss.str());
+        }
+
+        return offset;
+    }
+    else {
+        // Try again later
+        throw download_failed();
+    }
+}
+
+
+int ClockTAI::get_offset()
+{
+    using namespace std::chrono;
+    const auto time_now = system_clock::now();
+
+    std::unique_lock<std::mutex> lock(m_data_mutex);
+
+    if (not m_offset_valid) {
+#ifdef DOWNLOADED_IN_THE_PAST_TEST
+        // Assume we've downloaded it in the past:
+
+        m_offset = 37; // Valid in early 2017
+        m_offset_valid = true;
+
+        // Simulate requiring a new download
+        m_bulletin_download_time = time_now - hours(24 * 40);
+#else
+        // First time we run we must block until we know
+        // the offset
+        lock.unlock();
+        try {
+            m_offset = get_valid_offset();
+        }
+        catch (const download_failed&) {
+            throw runtime_error("Unable to download TAI bulletin");
+        }
+        lock.lock();
+        m_offset_valid = true;
+        m_bulletin_download_time = time_now;
+#endif
+        etiLog.level(info) <<
+            "Initialised TAI-UTC offset to " << m_offset << "s.";
+    }
+
+    if (time_now - m_bulletin_download_time > hours(24 * 31)) {
+        // Refresh if it's older than one month. Leap seconds are
+        // announced several months in advance
+        etiLog.level(debug) << "Trying to refresh TAI bulletin";
+
+        if (m_offset_future.valid()) {
+            auto state = m_offset_future.wait_for(seconds(0));
+            switch (state) {
+                case future_status::ready:
+                    try {
+                        m_offset = m_offset_future.get();
+                        m_offset_valid = true;
+                        m_bulletin_download_time = time_now;
+
+                        etiLog.level(info) <<
+                            "Updated TAI-UTC offset to " << m_offset << "s.";
+                    }
+                    catch (const download_failed&) {
+                        etiLog.level(warn) <<
+                            "TAI-UTC download failed, will retry in " <<
+                            download_retry_interval_hours << " hour(s)";
+
+                        m_bulletin_download_time += hours(download_retry_interval_hours);
+                    }
+#ifdef DOWNLOADED_IN_THE_PAST_TEST
+                    wait_longer = false;
+#endif
+                    break;
+
+                case future_status::deferred:
+                case future_status::timeout:
+                    // Not ready yet
+#ifdef TAI_TEST
+                    etiLog.level(debug) << "  async not ready yet";
+#endif
+                    break;
+            }
+        }
+        else {
+#ifdef TAI_TEST
+            etiLog.level(debug) << " Launch async";
+#endif
+            m_offset_future = async(launch::async, &ClockTAI::get_valid_offset, this);
+        }
+    }
+
+    return m_offset;
+}
+
+#if SUPPORT_SETTING_CLOCK_TAI
+int ClockTAI::update_local_tai_clock(int offset)
+{
+    struct timex timex_request;
+    timex_request.modes = ADJ_TAI;
+    timex_request.constant = offset;
+
+    int err = adjtimex(&timex_request);
+    if (err == -1) {
+        perror("adjtimex");
+    }
+
+    printf("adjtimex: %d, tai %d\n", err, timex_request.tai);
+
+    return err;
+}
+#endif
+
+void ClockTAI::update_cache(const char* cache_filename)
+{
+    int fd = open(cache_filename, O_RDWR | O_CREAT, 00664);
+    if (fd == -1) {
+        etiLog.level(error) <<
+            "TAI-UTC bulletin open cache for writing: " <<
+            strerror(errno);
+        return;
+    }
+
+    lseek(fd, 0, SEEK_SET);
+
+    ssize_t ret = lockf(fd, F_LOCK, 0);
+    if (ret == 0) {
+        // exclusive lock acquired
+        const char *data = m_bulletin.data();
+        size_t remaining = m_bulletin.size();
+
+        while (remaining > 0) {
+            ret = write(fd, data, remaining);
+            if (ret == -1) {
+                close(fd);
+                etiLog.level(error) <<
+                    "TAI-UTC bulletin write cache: " <<
+                    strerror(errno);
+                return;
+            }
+
+            remaining -= ret;
+            data += ret;
+        }
+        etiLog.level(debug) << "TAI-UTC bulletin cache updated";
+        close(fd);
+    }
+    else {
+        close(fd);
+        etiLog.level(error) <<
+            "TAI-UTC bulletin acquire cache lock for writing: " <<
+            strerror(errno);
+        return;
+    }
+}
+
+
+void ClockTAI::set_parameter(const string& parameter, const string& value)
+{
+    if (parameter == "expiry") {
+        throw ParameterError("Parameter '" + parameter +
+            "' is read-only in controllable " + get_rc_name());
+    }
+    else {
+        throw ParameterError("Parameter '" + parameter +
+            "' is not exported by controllable " + get_rc_name());
+    }
+}
+
+const string ClockTAI::get_parameter(const string& parameter) const
+{
+    if (parameter == "expiry") {
+        std::unique_lock<std::mutex> lock(m_data_mutex);
+        const int64_t expiry = parse_bulletin(m_bulletin).expiry;
+        if (expiry > 0) {
+            return to_string(expiry);
+        }
+        else {
+            return "Bulletin expired or invalid!";
+        }
+    }
+    else {
+        throw ParameterError("Parameter '" + parameter +
+            "' is not exported by controllable " + get_rc_name());
+    }
+}
+
+#if 0
+// Example testing code
+void debug_tai_clk()
+{
+    struct timespec rt_clk;
+
+    int err = clock_gettime(CLOCK_REALTIME, &rt_clk);
+    if (err) {
+        perror("REALTIME clock_gettime failed");
+    }
+
+    struct timespec tai_clk;
+
+    err = clock_gettime(CLOCK_TAI, &tai_clk);
+    if (err) {
+        perror("TAI clock_gettime failed");
+    }
+
+    printf("RT - TAI = %ld\n", rt_clk.tv_sec - tai_clk.tv_sec);
+
+
+    struct timex timex_request;
+    timex_request.modes = 0; // Do not set anything
+
+    err = adjtimex(&timex_request);
+    if (err == -1) {
+        perror("adjtimex");
+    }
+
+    printf("adjtimex: %d, tai %d\n", err, timex_request.tai);
+}
+#endif
+
diff --git a/contrib/ClockTAI.h b/contrib/ClockTAI.h
new file mode 100644
index 0000000..50a6323
--- /dev/null
+++ b/contrib/ClockTAI.h
@@ -0,0 +1,102 @@
+/*
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+   2011, 2012 Her Majesty the Queen in Right of Canada (Communications
+   Research Center Canada)
+
+   Copyright (C) 2019
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+    http://www.opendigitalradio.org
+   */
+/*
+   This file is part of the ODR-mmbTools.
+
+   This program 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 of the
+   License, or (at your option) any later version.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* The EDI output needs TAI clock, according to ETSI TS 102 693 Annex F
+ * "EDI Timestamps". This module can set the local CLOCK_TAI clock by
+ * setting the TAI-UTC offset using adjtimex.
+ *
+ * This functionality requires Linux 3.10 (30 Jun 2013) or newer.
+ */
+
+#pragma once
+
+#include <cstdint>
+#include <cstdlib>
+#include <sstream>
+#include <chrono>
+#include <future>
+#include <mutex>
+#include <string>
+#include <vector>
+#include "RemoteControl.h"
+
+// EDI needs to know UTC-TAI, but doesn't need the CLOCK_TAI to be set.
+// We can keep this code, maybe for future use
+#define SUPPORT_SETTING_CLOCK_TAI 0
+
+/* Loads, parses and represents TAI-UTC offset information from the IETF bulletin */
+class ClockTAI : public RemoteControllable {
+    public:
+        ClockTAI(const std::vector<std::string>& bulletin_urls);
+
+        // Fetch the bulletin from the IETF website and return the current
+        // TAI-UTC offset.
+        // Throws runtime_error on failure.
+        int get_offset(void);
+
+#if SUPPORT_SETTING_CLOCK_TAI
+        // Update the local TAI clock according to the TAI-UTC offset
+        // return 0 on success
+        int update_local_tai_clock(int offset);
+#endif
+
+    private:
+        class download_failed {};
+
+        // Either retrieve the bulletin from the cache or if necessarly
+        // download it, and calculate the TAI-UTC offset.
+        // Returns the offset or throws download_failed or a range_error
+        // if the offset is out of bounds.
+        int get_valid_offset(void);
+
+        // Download of new bulletin is done asynchronously
+        std::future<int> m_offset_future;
+
+        // Protect all data members, as RC functions are in another thread
+        mutable std::mutex m_data_mutex;
+
+        // The currently used TAI-UTC offset
+        int m_offset = 0;
+        int m_offset_valid = false;
+
+        std::vector<std::string> m_bulletin_urls;
+
+        std::string m_bulletin;
+        std::chrono::system_clock::time_point m_bulletin_download_time;
+
+        // Update the cache file with the current m_bulletin
+        void update_cache(const char* cache_filename);
+
+
+        /* Remote control */
+        virtual void set_parameter(const std::string& parameter,
+               const std::string& value);
+
+        /* Getting a parameter always returns a string. */
+        virtual const std::string get_parameter(const std::string& parameter) const;
+};
+
diff --git a/contrib/Log.cpp b/contrib/Log.cpp
new file mode 100644
index 0000000..2417f3a
--- /dev/null
+++ b/contrib/Log.cpp
@@ -0,0 +1,194 @@
+/*
+   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+   Her Majesty the Queen in Right of Canada (Communications Research
+   Center Canada)
+
+   Copyright (C) 2018
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+    http://www.opendigitalradio.org
+ */
+/*
+   This file is part of the ODR-mmbTools.
+
+   This program 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 of the
+   License, or (at your option) any later version.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <list>
+#include <cstdarg>
+#include <cinttypes>
+#include <chrono>
+
+#include "Log.h"
+
+using namespace std;
+
+/* etiLog is a singleton used in all parts of the program to output log messages.
+ */
+Logger etiLog;
+
+void Logger::register_backend(std::shared_ptr<LogBackend> backend)
+{
+    backends.push_back(backend);
+}
+
+
+void Logger::log(log_level_t level, const char* fmt, ...)
+{
+    if (level == discard) {
+        return;
+    }
+
+    int size = 100;
+    std::string str;
+    va_list ap;
+    while (1) {
+        str.resize(size);
+        va_start(ap, fmt);
+        int n = vsnprintf((char *)str.c_str(), size, fmt, ap);
+        va_end(ap);
+        if (n > -1 && n < size) {
+            str.resize(n);
+            break;
+        }
+        if (n > -1)
+            size = n + 1;
+        else
+            size *= 2;
+    }
+
+    logstr(level, move(str));
+}
+
+void Logger::logstr(log_level_t level, std::string&& message)
+{
+    if (level == discard) {
+        return;
+	}
+
+    log_message_t m(level, move(message));
+    m_message_queue.push(move(m));
+}
+
+void Logger::io_process()
+{
+    while (1) {
+        log_message_t m;
+        try {
+            m_message_queue.wait_and_pop(m);
+        }
+        catch (const ThreadsafeQueueWakeup&) {
+            break;
+        }
+
+        auto message = m.message;
+
+        /* Remove a potential trailing newline.
+         * It doesn't look good in syslog
+         */
+        if (message[message.length()-1] == '\n') {
+            message.resize(message.length()-1);
+        }
+
+        for (auto &backend : backends) {
+            backend->log(m.level, message);
+        }
+
+        if (m.level != log_level_t::trace) {
+            std::lock_guard<std::mutex> guard(m_cerr_mutex);
+            std::cerr << levels_as_str[m.level] << " " << message << std::endl;
+        }
+    }
+}
+
+
+LogLine Logger::level(log_level_t level)
+{
+    return LogLine(this, level);
+}
+
+LogToFile::LogToFile(const std::string& filename) : name("FILE")
+{
+    FILE* fd = fopen(filename.c_str(), "a");
+    if (fd == nullptr) {
+        fprintf(stderr, "Cannot open log file !");
+        throw std::runtime_error("Cannot open log file !");
+    }
+
+    log_file.reset(fd);
+}
+
+void LogToFile::log(log_level_t level, const std::string& message)
+{
+    if (not (level == log_level_t::trace or level == log_level_t::discard)) {
+        const char* log_level_text[] = {
+            "DEBUG", "INFO", "WARN", "ERROR", "ALERT", "EMERG"};
+
+        // fprintf is thread-safe
+        fprintf(log_file.get(), SYSLOG_IDENT ": %s: %s\n",
+                log_level_text[(size_t)level], message.c_str());
+        fflush(log_file.get());
+    }
+}
+
+void LogToSyslog::log(log_level_t level, const std::string& message)
+{
+    if (not (level == log_level_t::trace or level == log_level_t::discard)) {
+        int syslog_level = LOG_EMERG;
+        switch (level) {
+            case debug: syslog_level = LOG_DEBUG; break;
+            case info:  syslog_level = LOG_INFO; break;
+                        /* we don't have the notice level */
+            case warn:  syslog_level = LOG_WARNING; break;
+            case error: syslog_level = LOG_ERR; break;
+            default:    syslog_level = LOG_CRIT; break;
+            case alert: syslog_level = LOG_ALERT; break;
+            case emerg: syslog_level = LOG_EMERG; break;
+        }
+
+        syslog(syslog_level, SYSLOG_IDENT " %s", message.c_str());
+    }
+}
+
+LogTracer::LogTracer(const string& trace_filename) : name("TRACE")
+{
+    etiLog.level(info) << "Setting up TRACE to " << trace_filename;
+
+    FILE* fd = fopen(trace_filename.c_str(), "a");
+    if (fd == nullptr) {
+        fprintf(stderr, "Cannot open trace file !");
+        throw std::runtime_error("Cannot open trace file !");
+    }
+    m_trace_file.reset(fd);
+
+    using namespace std::chrono;
+    auto now = steady_clock::now().time_since_epoch();
+    m_trace_micros_startup = duration_cast<microseconds>(now).count();
+
+    fprintf(m_trace_file.get(),
+            "0,TRACER,startup at %" PRIu64 "\n", m_trace_micros_startup);
+}
+
+void LogTracer::log(log_level_t level, const std::string& message)
+{
+    if (level == log_level_t::trace) {
+        using namespace std::chrono;
+        const auto now = steady_clock::now().time_since_epoch();
+        const auto micros = duration_cast<microseconds>(now).count();
+
+        fprintf(m_trace_file.get(), "%" PRIu64 ",%s\n",
+                micros - m_trace_micros_startup,
+                message.c_str());
+    }
+}
diff --git a/contrib/Log.h b/contrib/Log.h
new file mode 100644
index 0000000..d5c39e0
--- /dev/null
+++ b/contrib/Log.h
@@ -0,0 +1,204 @@
+/*
+   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+   Her Majesty the Queen in Right of Canada (Communications Research
+   Center Canada)
+
+   Copyright (C) 2018
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+    http://www.opendigitalradio.org
+ */
+/*
+   This file is part of the ODR-mmbTools.
+
+   This program 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 of the
+   License, or (at your option) any later version.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#ifdef HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#include <syslog.h>
+#include <cstdarg>
+#include <cstdio>
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <list>
+#include <stdexcept>
+#include <string>
+#include <map>
+#include <mutex>
+#include <memory>
+#include <thread>
+#include "ThreadsafeQueue.h"
+
+#define SYSLOG_IDENT PACKAGE_NAME
+#define SYSLOG_FACILITY LOG_LOCAL0
+
+enum log_level_t {debug = 0, info, warn, error, alert, emerg, trace, discard};
+
+static const std::string levels_as_str[] =
+    { "     ", "     ", "WARN ", "ERROR", "ALERT", "EMERG", "TRACE", "-----"} ;
+
+/** Abstract class all backends must inherit from */
+class LogBackend {
+    public:
+        virtual ~LogBackend() {};
+        virtual void log(log_level_t level, const std::string& message) = 0;
+        virtual std::string get_name() const = 0;
+};
+
+/** A Logging backend for Syslog */
+class LogToSyslog : public LogBackend {
+    public:
+        LogToSyslog() : name("SYSLOG") {
+            openlog(SYSLOG_IDENT, LOG_PID, SYSLOG_FACILITY);
+        }
+
+        virtual ~LogToSyslog() {
+            closelog();
+        }
+
+        void log(log_level_t level, const std::string& message);
+
+        std::string get_name() const { return name; }
+
+    private:
+        const std::string name;
+
+        LogToSyslog(const LogToSyslog& other) = delete;
+        const LogToSyslog& operator=(const LogToSyslog& other) = delete;
+};
+
+class LogToFile : public LogBackend {
+    public:
+        LogToFile(const std::string& filename);
+        void log(log_level_t level, const std::string& message);
+        std::string get_name() const { return name; }
+
+    private:
+        const std::string name;
+
+        struct FILEDeleter{ void operator()(FILE* fd){ if(fd) fclose(fd);}};
+        std::unique_ptr<FILE, FILEDeleter> log_file;
+
+        LogToFile(const LogToFile& other) = delete;
+        const LogToFile& operator=(const LogToFile& other) = delete;
+};
+
+class LogTracer : public LogBackend {
+    public:
+        LogTracer(const std::string& filename);
+        void log(log_level_t level, const std::string& message);
+        std::string get_name() const { return name; }
+    private:
+        std::string name;
+        uint64_t m_trace_micros_startup = 0;
+
+        struct FILEDeleter{ void operator()(FILE* fd){ if(fd) fclose(fd);}};
+        std::unique_ptr<FILE, FILEDeleter> m_trace_file;
+
+        LogTracer(const LogTracer& other) = delete;
+        const LogTracer& operator=(const LogTracer& other) = delete;
+};
+
+class LogLine;
+
+struct log_message_t {
+    log_message_t(log_level_t _level, std::string&& _message) :
+        level(_level),
+        message(move(_message)) {}
+
+    log_message_t() :
+        level(debug),
+        message("") {}
+
+    log_level_t level;
+    std::string message;
+};
+
+class Logger {
+    public:
+        Logger() {
+            m_io_thread = std::thread(&Logger::io_process, this);
+        }
+
+        Logger(const Logger& other) = delete;
+        const Logger& operator=(const Logger& other) = delete;
+        ~Logger() {
+            m_message_queue.trigger_wakeup();
+            m_io_thread.join();
+        }
+
+        void register_backend(std::shared_ptr<LogBackend> backend);
+
+        /* Log the message to all backends */
+        void log(log_level_t level, const char* fmt, ...);
+
+        void logstr(log_level_t level, std::string&& message);
+
+        /* All logging IO is done in another thread */
+        void io_process(void);
+
+        /* Return a LogLine for the given level
+         * so that you can write etiLog.level(info) << "stuff = " << 21 */
+        LogLine level(log_level_t level);
+
+    private:
+        std::list<std::shared_ptr<LogBackend> > backends;
+
+        ThreadsafeQueue<log_message_t> m_message_queue;
+        std::thread m_io_thread;
+        std::mutex m_cerr_mutex;
+};
+
+extern Logger etiLog;
+
+// Accumulate a line of logs, using same syntax as stringstream
+// The line is logged when the LogLine gets destroyed
+class LogLine {
+    public:
+        LogLine(const LogLine& logline);
+        const LogLine& operator=(const LogLine& other) = delete;
+        LogLine(Logger* logger, log_level_t level) :
+            logger_(logger)
+        {
+            level_ = level;
+        }
+
+        // Push the new element into the stringstream
+        template <typename T>
+        LogLine& operator<<(T s) {
+            if (level_ != discard) {
+                os << s;
+            }
+            return *this;
+        }
+
+        ~LogLine()
+        {
+            if (level_ != discard) {
+                logger_->logstr(level_, os.str());
+            }
+        }
+
+    private:
+        std::ostringstream os;
+        log_level_t level_;
+        Logger* logger_;
+};
+
diff --git a/contrib/edi/ReedSolomon.cpp b/contrib/ReedSolomon.cpp
index 38d8ea8..1bf0b24 100644
--- a/contrib/edi/ReedSolomon.cpp
+++ b/contrib/ReedSolomon.cpp
@@ -64,7 +64,9 @@ ReedSolomon::ReedSolomon(int N, int K, bool reverse, int gfpoly, int firstRoot,
 
 ReedSolomon::~ReedSolomon()
 {
-    free_rs_char(rsData);
+    if (rsData != nullptr) {
+        free_rs_char(rsData);
+    }
 }
 
 
diff --git a/contrib/edi/ReedSolomon.h b/contrib/ReedSolomon.h
index abcef62..abcef62 100644
--- a/contrib/edi/ReedSolomon.h
+++ b/contrib/ReedSolomon.h
diff --git a/contrib/RemoteControl.cpp b/contrib/RemoteControl.cpp
new file mode 100644
index 0000000..878af59
--- /dev/null
+++ b/contrib/RemoteControl.cpp
@@ -0,0 +1,581 @@
+/*
+   Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
+   Her Majesty the Queen in Right of Canada (Communications Research
+   Center Canada)
+
+   Copyright (C) 2019
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+    http://www.opendigitalradio.org
+ */
+/*
+   This program 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 of the License, or
+   (at your option) any later version.
+
+   This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <list>
+#include <string>
+#include <iostream>
+#include <string>
+#include <algorithm>
+
+#include "RemoteControl.h"
+
+using namespace std;
+
+RemoteControllers rcs;
+
+RemoteControllerTelnet::~RemoteControllerTelnet()
+{
+    m_active = false;
+
+    if (m_restarter_thread.joinable()) {
+        m_restarter_thread.join();
+    }
+
+    if (m_child_thread.joinable()) {
+        m_child_thread.join();
+    }
+}
+
+void RemoteControllerTelnet::restart()
+{
+    if (m_restarter_thread.joinable()) {
+        m_restarter_thread.join();
+    }
+
+    m_restarter_thread = std::thread(
+            &RemoteControllerTelnet::restart_thread,
+            this, 0);
+}
+
+RemoteControllable::~RemoteControllable() {
+    rcs.remove_controllable(this);
+}
+
+std::list<std::string> RemoteControllable::get_supported_parameters() const {
+    std::list<std::string> parameterlist;
+    for (const auto& param : m_parameters) {
+        parameterlist.push_back(param[0]);
+    }
+    return parameterlist;
+}
+
+void RemoteControllers::add_controller(std::shared_ptr<BaseRemoteController> rc) {
+    m_controllers.push_back(rc);
+}
+
+void RemoteControllers::enrol(RemoteControllable *rc) {
+    controllables.push_back(rc);
+}
+
+void RemoteControllers::remove_controllable(RemoteControllable *rc) {
+    controllables.remove(rc);
+}
+
+std::list< std::vector<std::string> > RemoteControllers::get_param_list_values(const std::string& name) {
+    RemoteControllable* controllable = get_controllable_(name);
+
+    std::list< std::vector<std::string> > allparams;
+    for (auto &param : controllable->get_supported_parameters()) {
+        std::vector<std::string> item;
+        item.push_back(param);
+        try {
+            item.push_back(controllable->get_parameter(param));
+        }
+        catch (const ParameterError &e) {
+            item.push_back(std::string("error: ") + e.what());
+        }
+
+        allparams.push_back(item);
+    }
+    return allparams;
+}
+
+std::string RemoteControllers::get_param(const std::string& name, const std::string& param) {
+    RemoteControllable* controllable = get_controllable_(name);
+    return controllable->get_parameter(param);
+}
+
+void RemoteControllers::check_faults() {
+    for (auto &controller : m_controllers) {
+        if (controller->fault_detected()) {
+            etiLog.level(warn) <<
+                "Detected Remote Control fault, restarting it";
+            controller->restart();
+        }
+    }
+}
+
+RemoteControllable* RemoteControllers::get_controllable_(const std::string& name)
+{
+    auto rc = std::find_if(controllables.begin(), controllables.end(),
+            [&](RemoteControllable* r) { return r->get_rc_name() == name; });
+
+    if (rc == controllables.end()) {
+        throw ParameterError("Module name unknown");
+    }
+    else {
+        return *rc;
+    }
+}
+
+void RemoteControllers::set_param(
+        const std::string& name,
+        const std::string& param,
+        const std::string& value)
+{
+    etiLog.level(info) << "RC: Setting " << name << " " << param
+        << " to " << value;
+    RemoteControllable* controllable = get_controllable_(name);
+    try {
+        return controllable->set_parameter(param, value);
+    }
+    catch (const ios_base::failure& e) {
+        etiLog.level(info) << "RC: Failed to set " << name << " " << param
+        << " to " << value << ": " << e.what();
+        throw ParameterError("Cannot understand value");
+    }
+}
+
+// This runs in a separate thread, because
+// it would take too long to be done in the main loop
+// thread.
+void RemoteControllerTelnet::restart_thread(long)
+{
+    m_active = false;
+
+    if (m_child_thread.joinable()) {
+        m_child_thread.join();
+    }
+
+    m_child_thread = std::thread(&RemoteControllerTelnet::process, this, 0);
+}
+
+void RemoteControllerTelnet::handle_accept(Socket::TCPSocket&& socket)
+{
+    const std::string welcome = PACKAGE_NAME " Remote Control CLI\n"
+                                "Write 'help' for help.\n"
+                                "**********\n";
+    const std::string prompt = "> ";
+
+    std::string in_message;
+
+    try {
+        etiLog.level(info) << "RC: Accepted";
+
+        socket.sendall(welcome.data(), welcome.size());
+
+        while (m_active and in_message != "quit") {
+            socket.sendall(prompt.data(), prompt.size());
+
+            stringstream in_message_stream;
+
+            char last_char = '\0';
+            try {
+                while (last_char != '\n') {
+                    try {
+                        auto ret = socket.recv(&last_char, 1, 0, 1000);
+                        if (ret == 1) {
+                            in_message_stream << last_char;
+                        }
+                        else {
+                            break;
+                        }
+                    }
+                    catch (const Socket::TCPSocket::Timeout&) {
+                        if (not m_active) {
+                            break;
+                        }
+                    }
+                }
+            }
+            catch (const Socket::TCPSocket::Interrupted&) {
+                in_message_stream.clear();
+            }
+
+
+            if (in_message_stream.str().size() == 0) {
+                etiLog.level(info) << "RC: Connection terminated";
+                break;
+            }
+
+            std::getline(in_message_stream, in_message);
+
+            while (in_message.length() > 0 &&
+                    (in_message[in_message.length()-1] == '\r' ||
+                     in_message[in_message.length()-1] == '\n')) {
+                in_message.erase(in_message.length()-1, 1);
+            }
+
+            if (in_message.length() == 0) {
+                continue;
+            }
+
+            etiLog.level(info) << "RC: Got message '" << in_message << "'";
+
+            dispatch_command(socket, in_message);
+        }
+        etiLog.level(info) << "RC: Closing socket";
+        socket.close();
+    }
+    catch (const std::exception& e) {
+        etiLog.level(error) << "Remote control caught exception: " << e.what();
+    }
+}
+
+void RemoteControllerTelnet::process(long)
+{
+    try {
+        m_active = true;
+
+        m_socket.listen(m_port, "localhost");
+
+        etiLog.level(info) << "RC: Waiting for connection on port " << m_port;
+        while (m_active) {
+            auto sock = m_socket.accept(1000);
+
+            if (sock.valid()) {
+                handle_accept(move(sock));
+                etiLog.level(info) << "RC: Connection closed. Waiting for connection on port " << m_port;
+            }
+        }
+    }
+    catch (const runtime_error& e) {
+        etiLog.level(warn) << "RC: Encountered error: " << e.what();
+    }
+
+    etiLog.level(info) << "RC: Leaving";
+    m_fault = true;
+}
+
+static std::vector<std::string> tokenise(const std::string& message) {
+    stringstream ss(message);
+    std::vector<std::string> all_tokens;
+    std::string item;
+
+    while (std::getline(ss, item, ' ')) {
+        all_tokens.push_back(move(item));
+    }
+    return all_tokens;
+}
+
+
+void RemoteControllerTelnet::dispatch_command(Socket::TCPSocket& socket, string command)
+{
+    vector<string> cmd = tokenise(command);
+
+    if (cmd[0] == "help") {
+        reply(socket,
+                "The following commands are supported:\n"
+                "  list\n"
+                "    * Lists the modules that are loaded and their parameters\n"
+                "  show MODULE\n"
+                "    * Lists all parameters and their values from module MODULE\n"
+                "  get MODULE PARAMETER\n"
+                "    * Gets the value for the specified PARAMETER from module MODULE\n"
+                "  set MODULE PARAMETER VALUE\n"
+                "    * Sets the value for the PARAMETER ofr module MODULE\n"
+                "  quit\n"
+                "    * Terminate this session\n"
+                "\n");
+    }
+    else if (cmd[0] == "list") {
+        stringstream ss;
+
+        if (cmd.size() == 1) {
+            for (auto &controllable : rcs.controllables) {
+                ss << controllable->get_rc_name() << endl;
+
+                list< vector<string> > params = controllable->get_parameter_descriptions();
+                for (auto &param : params) {
+                    ss << "\t" << param[0] << " : " << param[1] << endl;
+                }
+            }
+        }
+        else {
+            reply(socket, "Too many arguments for command 'list'");
+        }
+
+        reply(socket, ss.str());
+    }
+    else if (cmd[0] == "show") {
+        if (cmd.size() == 2) {
+            try {
+                stringstream ss;
+                list< vector<string> > r = rcs.get_param_list_values(cmd[1]);
+                for (auto &param_val : r) {
+                    ss << param_val[0] << ": " << param_val[1] << endl;
+                }
+                reply(socket, ss.str());
+
+            }
+            catch (const ParameterError &e) {
+                reply(socket, e.what());
+            }
+        }
+        else {
+            reply(socket, "Incorrect parameters for command 'show'");
+        }
+    }
+    else if (cmd[0] == "get") {
+        if (cmd.size() == 3) {
+            try {
+                string r = rcs.get_param(cmd[1], cmd[2]);
+                reply(socket, r);
+            }
+            catch (const ParameterError &e) {
+                reply(socket, e.what());
+            }
+        }
+        else {
+            reply(socket, "Incorrect parameters for command 'get'");
+        }
+    }
+    else if (cmd[0] == "set") {
+        if (cmd.size() >= 4) {
+            try {
+                stringstream new_param_value;
+                for (size_t i = 3; i < cmd.size(); i++) {
+                    new_param_value << cmd[i];
+
+                    if (i+1 < cmd.size()) {
+                        new_param_value << " ";
+                    }
+                }
+
+                rcs.set_param(cmd[1], cmd[2], new_param_value.str());
+                reply(socket, "ok");
+            }
+            catch (const ParameterError &e) {
+                reply(socket, e.what());
+            }
+            catch (const exception &e) {
+                reply(socket, "Error: Invalid parameter value. ");
+            }
+        }
+        else {
+            reply(socket, "Incorrect parameters for command 'set'");
+        }
+    }
+    else if (cmd[0] == "quit") {
+        reply(socket, "Goodbye");
+    }
+    else {
+        reply(socket, "Message not understood");
+    }
+}
+
+void RemoteControllerTelnet::reply(Socket::TCPSocket& socket, string message)
+{
+    stringstream ss;
+    ss << message << "\r\n";
+    socket.sendall(message.data(), message.size());
+}
+
+
+#if defined(HAVE_ZEROMQ)
+
+RemoteControllerZmq::~RemoteControllerZmq() {
+    m_active = false;
+    m_fault = false;
+
+    if (m_restarter_thread.joinable()) {
+        m_restarter_thread.join();
+    }
+
+    if (m_child_thread.joinable()) {
+        m_child_thread.join();
+    }
+}
+
+void RemoteControllerZmq::restart()
+{
+    if (m_restarter_thread.joinable()) {
+        m_restarter_thread.join();
+    }
+
+    m_restarter_thread = std::thread(&RemoteControllerZmq::restart_thread, this);
+}
+
+// This runs in a separate thread, because
+// it would take too long to be done in the main loop
+// thread.
+void RemoteControllerZmq::restart_thread()
+{
+    m_active = false;
+
+    if (m_child_thread.joinable()) {
+        m_child_thread.join();
+    }
+
+    m_child_thread = std::thread(&RemoteControllerZmq::process, this);
+}
+
+void RemoteControllerZmq::recv_all(zmq::socket_t& pSocket, std::vector<std::string> &message)
+{
+    bool more = true;
+    do {
+        zmq::message_t msg;
+        pSocket.recv(&msg);
+        std::string incoming((char*)msg.data(), msg.size());
+        message.push_back(incoming);
+        more = msg.more();
+    } while (more);
+}
+
+void RemoteControllerZmq::send_ok_reply(zmq::socket_t &pSocket)
+{
+    zmq::message_t msg(2);
+    char repCode[2] = {'o', 'k'};
+    memcpy ((void*) msg.data(), repCode, 2);
+    pSocket.send(msg, 0);
+}
+
+void RemoteControllerZmq::send_fail_reply(zmq::socket_t &pSocket, const std::string &error)
+{
+    zmq::message_t msg1(4);
+    char repCode[4] = {'f', 'a', 'i', 'l'};
+    memcpy ((void*) msg1.data(), repCode, 4);
+    pSocket.send(msg1, ZMQ_SNDMORE);
+
+    zmq::message_t msg2(error.length());
+    memcpy ((void*) msg2.data(), error.c_str(), error.length());
+    pSocket.send(msg2, 0);
+}
+
+void RemoteControllerZmq::process()
+{
+    m_fault = false;
+
+    // create zmq reply socket for receiving ctrl parameters
+    try {
+        zmq::socket_t repSocket(m_zmqContext, ZMQ_REP);
+
+        // connect the socket
+        int hwm = 100;
+        int linger = 0;
+        repSocket.setsockopt(ZMQ_RCVHWM, &hwm, sizeof(hwm));
+        repSocket.setsockopt(ZMQ_SNDHWM, &hwm, sizeof(hwm));
+        repSocket.setsockopt(ZMQ_LINGER, &linger, sizeof(linger));
+        repSocket.bind(m_endpoint.c_str());
+
+        // create pollitem that polls the  ZMQ sockets
+        zmq::pollitem_t pollItems[] = { {repSocket, 0, ZMQ_POLLIN, 0} };
+        while (m_active) {
+            zmq::poll(pollItems, 1, 100);
+            std::vector<std::string> msg;
+
+            if (pollItems[0].revents & ZMQ_POLLIN) {
+                recv_all(repSocket, msg);
+
+                std::string command((char*)msg[0].data(), msg[0].size());
+
+                if (msg.size() == 1 && command == "ping") {
+                    send_ok_reply(repSocket);
+                }
+                else if (msg.size() == 1 && command == "list") {
+                    size_t cohort_size = rcs.controllables.size();
+                    for (auto &controllable : rcs.controllables) {
+                        std::stringstream ss;
+                        ss << "{ \"name\": \"" << controllable->get_rc_name() << "\"," <<
+                            " \"params\": { ";
+
+                        list< vector<string> > params = controllable->get_parameter_descriptions();
+                        size_t i = 0;
+                        for (auto &param : params) {
+                            if (i > 0) {
+                                ss << ", ";
+                            }
+
+                            ss << "\"" << param[0] << "\": " <<
+                                "\"" << param[1] << "\"";
+
+                            i++;
+                        }
+
+                        ss << " } }";
+
+                        std::string msg_s = ss.str();
+
+                        zmq::message_t zmsg(ss.str().size());
+                        memcpy ((void*) zmsg.data(), msg_s.data(), msg_s.size());
+
+                        int flag = (--cohort_size > 0) ? ZMQ_SNDMORE : 0;
+                        repSocket.send(zmsg, flag);
+                    }
+                }
+                else if (msg.size() == 2 && command == "show") {
+                    std::string module((char*) msg[1].data(), msg[1].size());
+                    try {
+                        list< vector<string> > r = rcs.get_param_list_values(module);
+                        size_t r_size = r.size();
+                        for (auto &param_val : r) {
+                            std::stringstream ss;
+                            ss << param_val[0] << ": " << param_val[1] << endl;
+                            zmq::message_t zmsg(ss.str().size());
+                            memcpy(zmsg.data(), ss.str().data(), ss.str().size());
+
+                            int flag = (--r_size > 0) ? ZMQ_SNDMORE : 0;
+                            repSocket.send(zmsg, flag);
+                        }
+                    }
+                    catch (const ParameterError &err) {
+                        send_fail_reply(repSocket, err.what());
+                    }
+                }
+                else if (msg.size() == 3 && command == "get") {
+                    std::string module((char*) msg[1].data(), msg[1].size());
+                    std::string parameter((char*) msg[2].data(), msg[2].size());
+
+                    try {
+                        std::string value = rcs.get_param(module, parameter);
+                        zmq::message_t zmsg(value.size());
+                        memcpy ((void*) zmsg.data(), value.data(), value.size());
+                        repSocket.send(zmsg, 0);
+                    }
+                    catch (const ParameterError &err) {
+                        send_fail_reply(repSocket, err.what());
+                    }
+                }
+                else if (msg.size() == 4 && command == "set") {
+                    std::string module((char*) msg[1].data(), msg[1].size());
+                    std::string parameter((char*) msg[2].data(), msg[2].size());
+                    std::string value((char*) msg[3].data(), msg[3].size());
+
+                    try {
+                        rcs.set_param(module, parameter, value);
+                        send_ok_reply(repSocket);
+                    }
+                    catch (const ParameterError &err) {
+                        send_fail_reply(repSocket, err.what());
+                    }
+                }
+                else {
+                    send_fail_reply(repSocket,
+                            "Unsupported command. commands: list, show, get, set");
+                }
+            }
+        }
+        repSocket.close();
+    }
+    catch (const zmq::error_t &e) {
+        etiLog.level(error) << "ZMQ RC error: " << std::string(e.what());
+    }
+    catch (const std::exception& e) {
+        etiLog.level(error) << "ZMQ RC caught exception: " << e.what();
+        m_fault = true;
+    }
+}
+
+#endif
+
diff --git a/contrib/RemoteControl.h b/contrib/RemoteControl.h
new file mode 100644
index 0000000..bd88f82
--- /dev/null
+++ b/contrib/RemoteControl.h
@@ -0,0 +1,249 @@
+/*
+   Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
+   Her Majesty the Queen in Right of Canada (Communications Research
+   Center Canada)
+
+   Copyright (C) 2019
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+    http://www.opendigitalradio.org
+
+   This module adds remote-control capability to some of the dabmux/dabmod modules.
+ */
+/*
+   This program 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 of the License, or
+   (at your option) any later version.
+
+   This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#if defined(HAVE_ZEROMQ)
+#  include "zmq.hpp"
+#endif
+
+#include <list>
+#include <map>
+#include <memory>
+#include <string>
+#include <atomic>
+#include <iostream>
+#include <thread>
+#include <stdexcept>
+
+#include "Log.h"
+#include "Socket.h"
+
+#define RC_ADD_PARAMETER(p, desc) {   \
+  std::vector<std::string> p; \
+  p.push_back(#p); \
+  p.push_back(desc); \
+  m_parameters.push_back(p); \
+}
+
+class ParameterError : public std::exception
+{
+    public:
+        ParameterError(std::string message) : m_message(message) {}
+        ~ParameterError() throw() {}
+        const char* what() const throw() { return m_message.c_str(); }
+
+    private:
+        std::string m_message;
+};
+
+class RemoteControllable;
+
+/* Remote controllers (that recieve orders from the user)
+ * must implement BaseRemoteController
+ */
+class BaseRemoteController {
+    public:
+        /* When this returns one, the remote controller cannot be
+         * used anymore, and must be restarted
+         */
+        virtual bool fault_detected() = 0;
+
+        /* In case of a fault, the remote controller can be
+         * restarted.
+         */
+        virtual void restart() = 0;
+
+        virtual ~BaseRemoteController() {}
+};
+
+/* Objects that support remote control must implement the following class */
+class RemoteControllable {
+    public:
+        RemoteControllable(const std::string& name) :
+            m_rc_name(name) {}
+
+        RemoteControllable(const RemoteControllable& other) = delete;
+        RemoteControllable& operator=(const RemoteControllable& other) = delete;
+
+        virtual ~RemoteControllable();
+
+        /* return a short name used to identify the controllable.
+         * It might be used in the commands the user has to type, so keep
+         * it short
+         */
+        virtual std::string get_rc_name() const { return m_rc_name; }
+
+        /* Return a list of possible parameters that can be set */
+        virtual std::list<std::string> get_supported_parameters() const;
+
+        /* Return a mapping of the descriptions of all parameters */
+        virtual std::list< std::vector<std::string> >
+            get_parameter_descriptions() const
+            {
+                return m_parameters;
+            }
+
+        /* Base function to set parameters. */
+        virtual void set_parameter(
+                const std::string& parameter,
+                const std::string& value) = 0;
+
+        /* Getting a parameter always returns a string. */
+        virtual const std::string get_parameter(const std::string& parameter) const = 0;
+
+    protected:
+        std::string m_rc_name;
+        std::list< std::vector<std::string> > m_parameters;
+};
+
+/* Holds all our remote controllers and controlled object.
+ */
+class RemoteControllers {
+    public:
+        void add_controller(std::shared_ptr<BaseRemoteController> rc);
+        void enrol(RemoteControllable *rc);
+        void remove_controllable(RemoteControllable *rc);
+        void check_faults();
+        std::list< std::vector<std::string> > get_param_list_values(const std::string& name);
+        std::string get_param(const std::string& name, const std::string& param);
+
+        void set_param(
+                const std::string& name,
+                const std::string& param,
+                const std::string& value);
+
+        std::list<RemoteControllable*> controllables;
+
+    private:
+        RemoteControllable* get_controllable_(const std::string& name);
+
+        std::list<std::shared_ptr<BaseRemoteController> > m_controllers;
+};
+
+extern RemoteControllers rcs;
+
+/* Implements a Remote controller based on a simple telnet CLI
+ * that listens on localhost
+ */
+class RemoteControllerTelnet : public BaseRemoteController {
+    public:
+        RemoteControllerTelnet()
+            : m_active(false),
+            m_fault(false),
+            m_port(0) { }
+
+        RemoteControllerTelnet(int port)
+            : m_active(port > 0),
+            m_fault(false),
+            m_port(port)
+        {
+            restart();
+        }
+
+
+        RemoteControllerTelnet& operator=(const RemoteControllerTelnet& other) = delete;
+        RemoteControllerTelnet(const RemoteControllerTelnet& other) = delete;
+
+        ~RemoteControllerTelnet();
+
+        virtual bool fault_detected() { return m_fault; }
+
+        virtual void restart();
+
+    private:
+        void restart_thread(long);
+
+        void process(long);
+
+        void dispatch_command(Socket::TCPSocket& socket, std::string command);
+        void reply(Socket::TCPSocket& socket, std::string message);
+        void handle_accept(Socket::TCPSocket&& socket);
+
+        std::atomic<bool> m_active;
+
+        /* This is set to true if a fault occurred */
+        std::atomic<bool> m_fault;
+        std::thread m_restarter_thread;
+
+        std::thread m_child_thread;
+
+        Socket::TCPSocket m_socket;
+        int m_port;
+};
+
+#if defined(HAVE_ZEROMQ)
+/* Implements a Remote controller using ZMQ transportlayer
+ * that listens on localhost
+ */
+class RemoteControllerZmq : public BaseRemoteController {
+    public:
+        RemoteControllerZmq()
+            : m_active(false), m_fault(false),
+            m_zmqContext(1),
+            m_endpoint("") { }
+
+        RemoteControllerZmq(const std::string& endpoint)
+            : m_active(not endpoint.empty()), m_fault(false),
+            m_zmqContext(1),
+            m_endpoint(endpoint),
+            m_child_thread(&RemoteControllerZmq::process, this) { }
+
+        RemoteControllerZmq& operator=(const RemoteControllerZmq& other) = delete;
+        RemoteControllerZmq(const RemoteControllerZmq& other) = delete;
+
+        ~RemoteControllerZmq();
+
+        virtual bool fault_detected() { return m_fault; }
+
+        virtual void restart();
+
+    private:
+        void restart_thread();
+
+        void recv_all(zmq::socket_t &pSocket, std::vector<std::string> &message);
+        void send_ok_reply(zmq::socket_t &pSocket);
+        void send_fail_reply(zmq::socket_t &pSocket, const std::string &error);
+        void process();
+
+        std::atomic<bool> m_active;
+
+        /* This is set to true if a fault occurred */
+        std::atomic<bool> m_fault;
+        std::thread m_restarter_thread;
+
+        zmq::context_t m_zmqContext;
+
+        std::string m_endpoint;
+        std::thread m_child_thread;
+};
+#endif
+
diff --git a/contrib/Socket.cpp b/contrib/Socket.cpp
index c87606a..cd70a8e 100644
--- a/contrib/Socket.cpp
+++ b/contrib/Socket.cpp
@@ -381,7 +381,7 @@ bool TCPSocket::valid() const
     return m_sock != -1;
 }
 
-void TCPSocket::connect(const std::string& hostname, int port, bool nonblock)
+void TCPSocket::connect(const std::string& hostname, int port)
 {
     if (m_sock != INVALID_SOCKET) {
         throw std::logic_error("You may only connect an invalid TCPSocket");
@@ -415,16 +415,10 @@ void TCPSocket::connect(const std::string& hostname, int port, bool nonblock)
         if (sfd == -1)
             continue;
 
-        if (nonblock) {
-            int flags = fcntl(sfd, F_GETFL);
-            if (fcntl(sfd, F_SETFL, flags | O_NONBLOCK) == -1) {
-                std::string errstr(strerror(errno));
-                throw std::runtime_error("TCP: Could not set O_NONBLOCK: " + errstr);
-            }
-        }
-
         int ret = ::connect(sfd, rp->ai_addr, rp->ai_addrlen);
         if (ret != -1 or (ret == -1 and errno == EINPROGRESS)) {
+            // As the TCPClient could set the socket to nonblocking, we
+            // must handle EINPROGRESS here
             m_sock = sfd;
             break;
         }
@@ -699,8 +693,13 @@ ssize_t TCPClient::recv(void *buffer, size_t length, int flags, int timeout_ms)
 
 void TCPClient::reconnect()
 {
-    const bool nonblock = true;
-    m_sock.connect(m_hostname, m_port, nonblock);
+    int flags = fcntl(m_sock.m_sock, F_GETFL);
+    if (fcntl(m_sock.m_sock, F_SETFL, flags | O_NONBLOCK) == -1) {
+        std::string errstr(strerror(errno));
+        throw std::runtime_error("TCP: Could not set O_NONBLOCK: " + errstr);
+    }
+
+    m_sock.connect(m_hostname, m_port);
 }
 
 TCPConnection::TCPConnection(TCPSocket&& sock) :
diff --git a/contrib/Socket.h b/contrib/Socket.h
index c3c37e1..8bb7fe1 100644
--- a/contrib/Socket.h
+++ b/contrib/Socket.h
@@ -162,7 +162,7 @@ class TCPSocket {
         TCPSocket& operator=(TCPSocket&& other);
 
         bool valid(void) const;
-        void connect(const std::string& hostname, int port, bool nonblock = false);
+        void connect(const std::string& hostname, int port);
         void listen(int port, const std::string& name);
         void close(void);
 
diff --git a/contrib/edi/crc.c b/contrib/crc.c
index cc02473..cc02473 100644
--- a/contrib/edi/crc.c
+++ b/contrib/crc.c
diff --git a/contrib/edi/crc.h b/contrib/crc.h
index b1785a1..b1785a1 100644
--- a/contrib/edi/crc.h
+++ b/contrib/crc.h
diff --git a/contrib/edi/AFPacket.cpp b/contrib/edi/AFPacket.cpp
index a58a980..b38c38b 100644
--- a/contrib/edi/AFPacket.cpp
+++ b/contrib/edi/AFPacket.cpp
@@ -10,21 +10,21 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 #include "config.h"
 #include "crc.h"
 #include "AFPacket.h"
@@ -34,7 +34,7 @@
 #include <string>
 #include <iostream>
 #include <cstdio>
-#include <stdint.h>
+#include <cstdint>
 #include <arpa/inet.h>
 
 namespace edi {
diff --git a/contrib/edi/AFPacket.h b/contrib/edi/AFPacket.h
index b4ccef1..f2c4e35 100644
--- a/contrib/edi/AFPacket.h
+++ b/contrib/edi/AFPacket.h
@@ -10,27 +10,27 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
 #include "config.h"
 #include <vector>
-#include <stdint.h>
+#include <cstdint>
 #include "TagItems.h"
 #include "TagPacket.h"
 
diff --git a/contrib/edi/Config.h b/contrib/edi/Config.h
index 0c7dce8..ca76322 100644
--- a/contrib/edi/Config.h
+++ b/contrib/edi/Config.h
@@ -9,21 +9,21 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
diff --git a/contrib/edi/Interleaver.cpp b/contrib/edi/Interleaver.cpp
index 50c5be2..f26a50e 100644
--- a/contrib/edi/Interleaver.cpp
+++ b/contrib/edi/Interleaver.cpp
@@ -29,7 +29,7 @@
    along with ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
    */
 
-#include "edi/Interleaver.h"
+#include "Interleaver.h"
 #include <cassert>
 
 namespace edi {
diff --git a/contrib/edi/Interleaver.h b/contrib/edi/Interleaver.h
index 23aebf8..3029d5d 100644
--- a/contrib/edi/Interleaver.h
+++ b/contrib/edi/Interleaver.h
@@ -13,21 +13,21 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
@@ -35,8 +35,9 @@
 #include <vector>
 #include <deque>
 #include <stdexcept>
-#include <stdint.h>
-#include "edi/PFT.h"
+#include <cstdint>
+#include "Log.h"
+#include "PFT.h"
 
 namespace edi {
 
diff --git a/contrib/edi/PFT.cpp b/contrib/edi/PFT.cpp
index 0692914..371d36f 100644
--- a/contrib/edi/PFT.cpp
+++ b/contrib/edi/PFT.cpp
@@ -14,34 +14,34 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #include "config.h"
 #include <vector>
 #include <list>
 #include <cstdio>
 #include <cstring>
-#include <stdint.h>
+#include <cstdint>
 #include <arpa/inet.h>
 #include <stdexcept>
 #include <sstream>
-#include <iostream>
-#include "edi/PFT.h"
+#include "PFT.h"
 #include "crc.h"
+#include "ReedSolomon.h"
 
 namespace edi {
 
@@ -61,13 +61,15 @@ PFT::PFT(const configuration_t &conf) :
     m_verbose(conf.verbose)
     {
         if (m_k > 207) {
+            etiLog.level(warn) <<
+                "EDI PFT: maximum chunk size is 207.";
             throw std::out_of_range("EDI PFT Chunk size too large.");
         }
 
         if (m_m > 5) {
-            clog <<
+            etiLog.level(warn) <<
                 "EDI PFT: high number of recoverable fragments"
-                " may lead to large overhead" << endl;
+                " may lead to large overhead";
             // See TS 102 821, 7.2.1 Known values, list entry for 'm'
         }
     }
diff --git a/contrib/edi/PFT.h b/contrib/edi/PFT.h
index 6d41781..0ff4839 100644
--- a/contrib/edi/PFT.h
+++ b/contrib/edi/PFT.h
@@ -14,21 +14,21 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
@@ -36,10 +36,11 @@
 #include <vector>
 #include <list>
 #include <stdexcept>
-#include <stdint.h>
-#include "edi/AFPacket.h"
-#include "edi/ReedSolomon.h"
-#include "edi/Config.h"
+#include <cstdint>
+#include "AFPacket.h"
+#include "Log.h"
+#include "ReedSolomon.h"
+#include "Config.h"
 
 namespace edi {
 
diff --git a/contrib/edi/TagItems.cpp b/contrib/edi/TagItems.cpp
index 748f246..35a6852 100644
--- a/contrib/edi/TagItems.cpp
+++ b/contrib/edi/TagItems.cpp
@@ -10,32 +10,40 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #include "config.h"
-#include "edi/TagItems.h"
+#include "TagItems.h"
 #include <vector>
 #include <iostream>
 #include <string>
-#include <stdint.h>
+#include <cstdint>
 #include <stdexcept>
 
 namespace edi {
 
+TagStarPTR::TagStarPTR(const std::string& protocol)
+    : m_protocol(protocol)
+{
+    if (m_protocol.size() != 4) {
+        throw std::runtime_error("TagStarPTR protocol invalid length");
+    }
+}
+
 std::vector<uint8_t> TagStarPTR::Assemble()
 {
     //std::cerr << "TagItem *ptr" << std::endl;
@@ -47,10 +55,7 @@ std::vector<uint8_t> TagStarPTR::Assemble()
     packet.push_back(0);
     packet.push_back(0x40);
 
-    if (protocol.size() != 4) {
-        throw std::runtime_error("TagStarPTR protocol invalid length");
-    }
-    packet.insert(packet.end(), protocol.begin(), protocol.end());
+    packet.insert(packet.end(), m_protocol.begin(), m_protocol.end());
 
     // Major
     packet.push_back(0);
@@ -62,6 +67,139 @@ std::vector<uint8_t> TagStarPTR::Assemble()
     return packet;
 }
 
+std::vector<uint8_t> TagDETI::Assemble()
+{
+    std::string pack_data("deti");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+    packet.reserve(256);
+
+    // Placeholder for length
+    packet.push_back(0);
+    packet.push_back(0);
+    packet.push_back(0);
+    packet.push_back(0);
+
+    uint8_t fct  = dlfc % 250;
+    uint8_t fcth = dlfc / 250;
+
+
+    uint16_t detiHeader = fct | (fcth << 8) | (rfudf << 13) | (ficf << 14) | (atstf << 15);
+    packet.push_back(detiHeader >> 8);
+    packet.push_back(detiHeader & 0xFF);
+
+    uint32_t etiHeader = mnsc | (rfu << 16) | (rfa << 17) |
+                        (fp << 19) | (mid << 22) | (stat << 24);
+    packet.push_back((etiHeader >> 24) & 0xFF);
+    packet.push_back((etiHeader >> 16) & 0xFF);
+    packet.push_back((etiHeader >> 8) & 0xFF);
+    packet.push_back(etiHeader & 0xFF);
+
+    if (atstf) {
+        packet.push_back(utco);
+
+        packet.push_back((seconds >> 24) & 0xFF);
+        packet.push_back((seconds >> 16) & 0xFF);
+        packet.push_back((seconds >> 8) & 0xFF);
+        packet.push_back(seconds & 0xFF);
+
+        packet.push_back((tsta >> 16) & 0xFF);
+        packet.push_back((tsta >> 8) & 0xFF);
+        packet.push_back(tsta & 0xFF);
+    }
+
+    if (ficf) {
+        for (size_t i = 0; i < fic_length; i++) {
+            packet.push_back(fic_data[i]);
+        }
+    }
+
+    if (rfudf) {
+        packet.push_back((rfud >> 16) & 0xFF);
+        packet.push_back((rfud >> 8) & 0xFF);
+        packet.push_back(rfud & 0xFF);
+    }
+
+    // calculate and update size
+    // remove TAG name and TAG length fields and convert to bits
+    uint32_t taglength = (packet.size() - 8) * 8;
+
+    // write length into packet
+    packet[4] = (taglength >> 24) & 0xFF;
+    packet[5] = (taglength >> 16) & 0xFF;
+    packet[6] = (taglength >> 8) & 0xFF;
+    packet[7] = taglength & 0xFF;
+
+    dlfc = (dlfc+1) % 5000;
+
+    /*
+    std::cerr << "TagItem deti, packet.size " << packet.size() << std::endl;
+    std::cerr << "              fic length " << fic_length << std::endl;
+    std::cerr << "              length " << taglength / 8 << std::endl;
+    */
+    return packet;
+}
+
+void TagDETI::set_edi_time(const std::time_t t, int tai_utc_offset)
+{
+    utco = tai_utc_offset - 32;
+
+    const std::time_t posix_timestamp_1_jan_2000 = 946684800;
+
+    seconds = t - posix_timestamp_1_jan_2000 + utco;
+}
+
+std::vector<uint8_t> TagESTn::Assemble()
+{
+    std::string pack_data("est");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+    packet.reserve(mst_length*8 + 16);
+
+    packet.push_back(id);
+
+    // Placeholder for length
+    packet.push_back(0);
+    packet.push_back(0);
+    packet.push_back(0);
+    packet.push_back(0);
+
+    if (tpl > 0x3F) {
+        throw std::runtime_error("TagESTn: invalid TPL value");
+    }
+
+    if (sad > 0x3FF) {
+        throw std::runtime_error("TagESTn: invalid SAD value");
+    }
+
+    if (scid > 0x3F) {
+        throw std::runtime_error("TagESTn: invalid SCID value");
+    }
+
+    uint32_t sstc = (scid << 18) | (sad << 8) | (tpl << 2) | rfa;
+    packet.push_back((sstc >> 16) & 0xFF);
+    packet.push_back((sstc >> 8) & 0xFF);
+    packet.push_back(sstc & 0xFF);
+
+    for (size_t i = 0; i < mst_length * 8; i++) {
+        packet.push_back(mst_data[i]);
+    }
+
+    // calculate and update size
+    // remove TAG name and TAG length fields and convert to bits
+    uint32_t taglength = (packet.size() - 8) * 8;
+
+    // write length into packet
+    packet[4] = (taglength >> 24) & 0xFF;
+    packet[5] = (taglength >> 16) & 0xFF;
+    packet[6] = (taglength >> 8) & 0xFF;
+    packet[7] = taglength & 0xFF;
+
+    /*
+    std::cerr << "TagItem ESTn, length " << packet.size() << std::endl;
+    std::cerr << "              mst_length " << mst_length << std::endl;
+    */
+    return packet;
+}
+
 std::vector<uint8_t> TagDSTI::Assemble()
 {
     std::string pack_data("dsti");
@@ -134,6 +272,35 @@ void TagDSTI::set_edi_time(const std::time_t t, int tai_utc_offset)
     seconds = t - posix_timestamp_1_jan_2000 + utco;
 }
 
+#if 0
+/* Update the EDI time. t is in UTC, TAI offset is requested from adjtimex */
+void TagDSTI::set_edi_time(const std::time_t t)
+{
+    if (tai_offset_cache_updated_at == 0 or tai_offset_cache_updated_at + 3600 < t) {
+        struct timex timex_request;
+        timex_request.modes = 0;
+
+        int err = adjtimex(&timex_request);
+        if (err == -1) {
+            throw std::runtime_error("adjtimex failed");
+        }
+
+        if (timex_request.tai == 0) {
+            throw std::runtime_error("CLOCK_TAI is not properly set up");
+        }
+        tai_offset_cache = timex_request.tai;
+        tai_offset_cache_updated_at = t;
+
+        fprintf(stderr, "adjtimex: %d, tai %d\n", err, timex_request.tai);
+    }
+
+    utco = tai_offset_cache - 32;
+
+    const std::time_t posix_timestamp_1_jan_2000 = 946684800;
+
+    seconds = t - posix_timestamp_1_jan_2000 + utco;
+}
+#endif
 
 std::vector<uint8_t> TagSSm::Assemble()
 {
@@ -192,6 +359,7 @@ std::vector<uint8_t> TagSSm::Assemble()
     return packet;
 }
 
+
 std::vector<uint8_t> TagStarDMY::Assemble()
 {
     std::string pack_data("*dmy");
diff --git a/contrib/edi/TagItems.h b/contrib/edi/TagItems.h
index 73e745a..25daa14 100644
--- a/contrib/edi/TagItems.h
+++ b/contrib/edi/TagItems.h
@@ -10,21 +10,21 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
@@ -33,7 +33,7 @@
 #include <array>
 #include <chrono>
 #include <string>
-#include <stdint.h>
+#include <cstdint>
 
 namespace edi {
 
@@ -47,8 +47,94 @@ class TagItem
 class TagStarPTR : public TagItem
 {
     public:
-        std::string protocol = "";
+        TagStarPTR(const std::string& protocol);
         std::vector<uint8_t> Assemble();
+
+    private:
+        std::string m_protocol = "";
+};
+
+// ETSI TS 102 693, 5.1.3 DAB ETI(LI) Management (deti)
+class TagDETI : public TagItem
+{
+    public:
+        std::vector<uint8_t> Assemble();
+
+        /***** DATA in intermediary format ****/
+        // For the ETI Header: must be defined !
+        uint8_t stat = 0;
+        uint8_t mid = 0;
+        uint8_t fp = 0;
+        uint8_t rfa = 0;
+        uint8_t rfu = 0; // MNSC is valid
+        uint16_t mnsc = 0;
+        uint16_t dlfc = 0; // modulo 5000 frame counter
+
+        // ATST (optional)
+        bool atstf = false; // presence of atst data
+
+        /* UTCO: Offset (in seconds) between UTC and the Seconds value. The
+         * value is expressed as an unsigned 8-bit quantity. As of February
+         * 2009, the value shall be 2 and shall change as a result of each
+         * modification of the number of leap seconds, as proscribed by
+         * International Earth Rotation and Reference Systems Service (IERS).
+         *
+         * According to Annex F
+         *  EDI = TAI - 32s (constant)
+         *  EDI = UTC + UTCO
+         * we derive
+         *  UTCO = TAI-UTC - 32
+         * where the TAI-UTC offset is given by the USNO bulletin using
+         * the ClockTAI module.
+         */
+        uint8_t utco = 0;
+
+        /* Update the EDI time. t is in UTC */
+        void set_edi_time(const std::time_t t, int tai_utc_offset);
+
+        /* The number of SI seconds since 2000-01-01 T 00:00:00 UTC as an
+         * unsigned 32-bit quantity. Contrary to POSIX, this value also
+         * counts leap seconds.
+         */
+        uint32_t seconds = 0;
+
+        /* TSTA: Shall be the 24 least significant bits of the Time Stamp
+         * (TIST) field from the STI-D(LI) Frame. The full definition for the
+         * STI TIST can be found in annex B of EN 300 797 [4]. The most
+         * significant 8 bits of the TIST field of the incoming STI-D(LI)
+         * frame, if required, may be carried in the RFAD field.
+         */
+        uint32_t tsta = 0xFFFFFF;
+
+        // the FIC (optional)
+        bool ficf = false;
+        const unsigned char* fic_data;
+        size_t fic_length;
+
+        // rfu
+        bool rfudf = false;
+        uint32_t rfud = 0;
+
+
+};
+
+// ETSI TS 102 693, 5.1.5 ETI Sub-Channel Stream <n>
+class TagESTn : public TagItem
+{
+    public:
+        std::vector<uint8_t> Assemble();
+
+        // SSTCn
+        uint8_t  scid;
+        uint16_t sad;
+        uint8_t  tpl;
+        uint8_t  rfa;
+
+        // Pointer to MSTn data
+        uint8_t* mst_data;
+        size_t mst_length; // STLn * 8 bytes
+
+        uint8_t id;
 };
 
 // ETSI TS 102 693, 5.1.2 DAB STI-D(LI) Management
@@ -101,6 +187,10 @@ class TagDSTI : public TagItem
         uint32_t tsta = 0xFFFFFF;
 
         std::array<uint8_t, 9> rfad;
+
+    private:
+        int tai_offset_cache = 0;
+        std::time_t tai_offset_cache_updated_at = 0;
 };
 
 // ETSI TS 102 693, 5.1.4 STI-D Payload Stream <m>
diff --git a/contrib/edi/TagPacket.cpp b/contrib/edi/TagPacket.cpp
index 01a1ffe..b0bf9a1 100644
--- a/contrib/edi/TagPacket.cpp
+++ b/contrib/edi/TagPacket.cpp
@@ -8,27 +8,30 @@
     This defines a TAG Packet.
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #include "config.h"
-#include "edi/TagPacket.h"
-#include "edi/TagItems.h"
+#include "TagPacket.h"
+#include "TagItems.h"
+#include <vector>
 #include <iostream>
 #include <string>
+#include <list>
+#include <cstdint>
 #include <cassert>
 
 namespace edi {
diff --git a/contrib/edi/TagPacket.h b/contrib/edi/TagPacket.h
index a932e89..1e40ce7 100644
--- a/contrib/edi/TagPacket.h
+++ b/contrib/edi/TagPacket.h
@@ -8,26 +8,26 @@
     This defines a TAG Packet.
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
 #include "config.h"
-#include "edi/TagItems.h"
+#include "TagItems.h"
 #include <vector>
 #include <string>
 #include <list>
diff --git a/contrib/edi/Transport.cpp b/contrib/edi/Transport.cpp
index c2fb2a7..0d5c237 100644
--- a/contrib/edi/Transport.cpp
+++ b/contrib/edi/Transport.cpp
@@ -9,25 +9,23 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
-
-#include "edi/Transport.h"
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "Transport.h"
 #include <iterator>
-#include <iostream>
 
 using namespace std;
 
@@ -35,31 +33,31 @@ namespace edi {
 
 void configuration_t::print() const
 {
-    clog << "EDI" << endl;
-    clog << " verbose     " << verbose << endl;
+    etiLog.level(info) << "EDI";
+    etiLog.level(info) << " verbose     " << verbose;
     for (auto edi_dest : destinations) {
         if (auto udp_dest = dynamic_pointer_cast<edi::udp_destination_t>(edi_dest)) {
-            clog << " UDP to " << udp_dest->dest_addr << ":" << dest_port << endl;
+            etiLog.level(info) << " UDP to " << udp_dest->dest_addr << ":" << dest_port;
             if (not udp_dest->source_addr.empty()) {
-                clog << "  source      " << udp_dest->source_addr << endl;
-                clog << "  ttl         " << udp_dest->ttl << endl;
+                etiLog.level(info) << "  source      " << udp_dest->source_addr;
+                etiLog.level(info) << "  ttl         " << udp_dest->ttl;
             }
-            clog << "  source port " << udp_dest->source_port << endl;
+            etiLog.level(info) << "  source port " << udp_dest->source_port;
         }
         else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_server_t>(edi_dest)) {
-            clog << " TCP listening on port " << tcp_dest->listen_port << endl;
-            clog << "  max frames queued    " << tcp_dest->max_frames_queued << endl;
+            etiLog.level(info) << " TCP listening on port " << tcp_dest->listen_port;
+            etiLog.level(info) << "  max frames queued    " << tcp_dest->max_frames_queued;
         }
         else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_client_t>(edi_dest)) {
-            clog << " TCP client connecting to " << tcp_dest->dest_addr << ":" << tcp_dest->dest_port << endl;
-            clog << "  max frames queued    " << tcp_dest->max_frames_queued << endl;
+            etiLog.level(info) << " TCP client connecting to " << tcp_dest->dest_addr << ":" << tcp_dest->dest_port;
+            etiLog.level(info) << "  max frames queued    " << tcp_dest->max_frames_queued;
         }
         else {
             throw logic_error("EDI destination not implemented");
         }
     }
     if (interleaver_enabled()) {
-        clog << " interleave     " << latency_frames * 24 << " ms" << endl;
+        etiLog.level(info) << " interleave     " << latency_frames * 24 << " ms";
     }
 }
 
@@ -69,7 +67,7 @@ Sender::Sender(const configuration_t& conf) :
     edi_pft(m_conf)
 {
     if (m_conf.verbose) {
-        clog << "Setup EDI" << endl;
+        etiLog.log(info, "Setup EDI");
     }
 
     for (const auto& edi_dest : m_conf.destinations) {
@@ -107,7 +105,7 @@ Sender::Sender(const configuration_t& conf) :
     }
 
     if (m_conf.verbose) {
-        clog << "EDI set up" << endl;
+        etiLog.log(info, "EDI set up");
     }
 }
 
diff --git a/contrib/edi/Transport.h b/contrib/edi/Transport.h
index db1adce..325acf8 100644
--- a/contrib/edi/Transport.h
+++ b/contrib/edi/Transport.h
@@ -9,29 +9,29 @@
 
    */
 /*
-   This file is part of ODR-DabMux.
+   This file is part of the ODR-mmbTools.
 
-   ODR-DabMux is free software: you can redistribute it and/or modify
+   This program 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 of the
    License, or (at your option) any later version.
 
-   ODR-DabMux is distributed in the hope that it will be useful,
+   This program 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 ODR-DabMux.  If not, see <http://www.gnu.org/licenses/>.
-   */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #pragma once
 
 #include "config.h"
-#include "edi/Config.h"
-#include "edi/AFPacket.h"
-#include "edi/PFT.h"
-#include "edi/Interleaver.h"
+#include "Config.h"
+#include "AFPacket.h"
+#include "PFT.h"
+#include "Interleaver.h"
 #include "Socket.h"
 #include <vector>
 #include <unordered_map>
diff --git a/contrib/lib_crc.c b/contrib/lib_crc.c
deleted file mode 100644
index 8f71ffb..0000000
--- a/contrib/lib_crc.c
+++ /dev/null
@@ -1,459 +0,0 @@
-#include "lib_crc.h"

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   Library         : lib_crc                                       *

-    *   File            : lib_crc.c                                     *

-    *   Author          : Lammert Bies  1999-2008                       *

-    *   E-mail          : info@lammertbies.nl                           *

-    *   Language        : ANSI C                                        *

-    *                                                                   *

-    *                                                                   *

-    *   Description                                                     *

-    *   ===========                                                     *

-    *                                                                   *

-    *   The file lib_crc.c contains the private  and  public  func-     *

-    *   tions  used  for  the  calculation of CRC-16, CRC-CCITT and     *

-    *   CRC-32 cyclic redundancy values.                                *

-    *                                                                   *

-    *                                                                   *

-    *   Dependencies                                                    *

-    *   ============                                                    *

-    *                                                                   *

-    *   lib_crc.h       CRC definitions and prototypes                  *

-    *                                                                   *

-    *                                                                   *

-    *   Modification history                                            *

-    *   ====================                                            *

-    *                                                                   *

-    *   Date        Version Comment                                     *

-    *                                                                   *

-    *   2008-04-20  1.16    Added CRC-CCITT calculation for Kermit      *

-    *                                                                   *

-    *   2007-04-01  1.15    Added CRC16 calculation for Modbus          *

-    *                                                                   *

-    *   2007-03-28  1.14    Added CRC16 routine for Sick devices        *

-    *                                                                   *

-    *   2005-12-17  1.13    Added CRC-CCITT with initial 0x1D0F         *

-    *                                                                   *

-    *   2005-05-14  1.12    Added CRC-CCITT with start value 0          *

-    *                                                                   *

-    *   2005-02-05  1.11    Fixed bug in CRC-DNP routine                *

-    *                                                                   *

-    *   2005-02-04  1.10    Added CRC-DNP routines                      *

-    *                                                                   *

-    *   1999-02-21  1.01    Added FALSE and TRUE mnemonics              *

-    *                                                                   *

-    *   1999-01-22  1.00    Initial source                              *

-    *                                                                   *

-    \*******************************************************************/

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   #define P_xxxx                                                  *

-    *                                                                   *

-    *   The CRC's are computed using polynomials. The  coefficients     *

-    *   for the algorithms are defined by the following constants.      *

-    *                                                                   *

-    \*******************************************************************/

-

-#define                 P_16        0xA001

-#define                 P_32        0xEDB88320L

-#define                 P_CCITT     0x1021

-#define                 P_DNP       0xA6BC

-#define                 P_KERMIT    0x8408

-#define                 P_SICK      0x8005

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static int crc_tab...init                                       *

-    *   static unsigned ... crc_tab...[]                                *

-    *                                                                   *

-    *   The algorithms use tables with precalculated  values.  This     *

-    *   speeds  up  the calculation dramaticaly. The first time the     *

-    *   CRC function is called, the table for that specific  calcu-     *

-    *   lation  is set up. The ...init variables are used to deter-     *

-    *   mine if the initialization has taken place. The  calculated     *

-    *   values are stored in the crc_tab... arrays.                     *

-    *                                                                   *

-    *   The variables are declared static. This makes them  invisi-     *

-    *   ble for other modules of the program.                           *

-    *                                                                   *

-    \*******************************************************************/

-

-static int              crc_tab16_init          = FALSE;

-static int              crc_tab32_init          = FALSE;

-static int              crc_tabccitt_init       = FALSE;

-static int              crc_tabdnp_init         = FALSE;

-static int              crc_tabkermit_init      = FALSE;

-

-static unsigned short   crc_tab16[256];

-static unsigned long    crc_tab32[256];

-static unsigned short   crc_tabccitt[256];

-static unsigned short   crc_tabdnp[256];

-static unsigned short   crc_tabkermit[256];

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static void init_crc...tab();                                   *

-    *                                                                   *

-    *   Three local functions are used  to  initialize  the  tables     *

-    *   with values for the algorithm.                                  *

-    *                                                                   *

-    \*******************************************************************/

-

-static void             init_crc16_tab( void );

-static void             init_crc32_tab( void );

-static void             init_crcccitt_tab( void );

-static void             init_crcdnp_tab( void );

-static void             init_crckermit_tab( void );

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   unsigned short update_crc_ccitt( unsigned long crc, char c );   *

-    *                                                                   *

-    *   The function update_crc_ccitt calculates  a  new  CRC-CCITT     *

-    *   value  based  on the previous value of the CRC and the next     *

-    *   byte of the data to be checked.                                 *

-    *                                                                   *

-    \*******************************************************************/

-

-unsigned short update_crc_ccitt( unsigned short crc, char c ) {

-

-    unsigned short tmp, short_c;

-

-    short_c  = 0x00ff & (unsigned short) c;

-

-    if ( ! crc_tabccitt_init ) init_crcccitt_tab();

-

-    tmp = (crc >> 8) ^ short_c;

-    crc = (crc << 8) ^ crc_tabccitt[tmp];

-

-    return crc;

-

-}  /* update_crc_ccitt */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   unsigned short update_crc_sick(                                 *

-    *             unsigned long crc, char c, char prev_byte );          *

-    *                                                                   *

-    *   The function  update_crc_sick  calculates  a  new  CRC-SICK     *

-    *   value  based  on the previous value of the CRC and the next     *

-    *   byte of the data to be checked.                                 *

-    *                                                                   *

-    \*******************************************************************/

-

-unsigned short update_crc_sick( unsigned short crc, char c, char prev_byte ) {

-

-    unsigned short short_c, short_p;

-

-    short_c  =   0x00ff & (unsigned short) c;

-    short_p  = ( 0x00ff & (unsigned short) prev_byte ) << 8;

-

-    if ( crc & 0x8000 ) crc = ( crc << 1 ) ^ P_SICK;

-    else                crc =   crc << 1;

-

-    crc &= 0xffff;

-    crc ^= ( short_c | short_p );

-

-    return crc;

-

-}  /* update_crc_sick */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   unsigned short update_crc_16( unsigned short crc, char c );     *

-    *                                                                   *

-    *   The function update_crc_16 calculates a  new  CRC-16  value     *

-    *   based  on  the  previous value of the CRC and the next byte     *

-    *   of the data to be checked.                                      *

-    *                                                                   *

-    \*******************************************************************/

-

-unsigned short update_crc_16( unsigned short crc, char c ) {

-

-    unsigned short tmp, short_c;

-

-    short_c = 0x00ff & (unsigned short) c;

-

-    if ( ! crc_tab16_init ) init_crc16_tab();

-

-    tmp =  crc       ^ short_c;

-    crc = (crc >> 8) ^ crc_tab16[ tmp & 0xff ];

-

-    return crc;

-

-}  /* update_crc_16 */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   unsigned short update_crc_kermit( unsigned short crc, char c ); *

-    *                                                                   *

-    *   The function update_crc_kermit calculates a  new  CRC value     *

-    *   based  on  the  previous value of the CRC and the next byte     *

-    *   of the data to be checked.                                      *

-    *                                                                   *

-    \*******************************************************************/

-

-unsigned short update_crc_kermit( unsigned short crc, char c ) {

-

-    unsigned short tmp, short_c;

-

-    short_c = 0x00ff & (unsigned short) c;

-

-    if ( ! crc_tabkermit_init ) init_crckermit_tab();

-

-    tmp =  crc       ^ short_c;

-    crc = (crc >> 8) ^ crc_tabkermit[ tmp & 0xff ];

-

-    return crc;

-

-}  /* update_crc_kermit */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   unsigned short update_crc_dnp( unsigned short crc, char c );    *

-    *                                                                   *

-    *   The function update_crc_dnp calculates a new CRC-DNP  value     *

-    *   based  on  the  previous value of the CRC and the next byte     *

-    *   of the data to be checked.                                      *

-    *                                                                   *

-    \*******************************************************************/

-

-unsigned short update_crc_dnp( unsigned short crc, char c ) {

-

-    unsigned short tmp, short_c;

-

-    short_c = 0x00ff & (unsigned short) c;

-

-    if ( ! crc_tabdnp_init ) init_crcdnp_tab();

-

-    tmp =  crc       ^ short_c;

-    crc = (crc >> 8) ^ crc_tabdnp[ tmp & 0xff ];

-

-    return crc;

-

-}  /* update_crc_dnp */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   unsigned long update_crc_32( unsigned long crc, char c );       *

-    *                                                                   *

-    *   The function update_crc_32 calculates a  new  CRC-32  value     *

-    *   based  on  the  previous value of the CRC and the next byte     *

-    *   of the data to be checked.                                      *

-    *                                                                   *

-    \*******************************************************************/

-

-unsigned long update_crc_32( unsigned long crc, char c ) {

-

-    unsigned long tmp, long_c;

-

-    long_c = 0x000000ffL & (unsigned long) c;

-

-    if ( ! crc_tab32_init ) init_crc32_tab();

-

-    tmp = crc ^ long_c;

-    crc = (crc >> 8) ^ crc_tab32[ tmp & 0xff ];

-

-    return crc;

-

-}  /* update_crc_32 */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static void init_crc16_tab( void );                             *

-    *                                                                   *

-    *   The function init_crc16_tab() is used  to  fill  the  array     *

-    *   for calculation of the CRC-16 with values.                      *

-    *                                                                   *

-    \*******************************************************************/

-

-static void init_crc16_tab( void ) {

-

-    int i, j;

-    unsigned short crc, c;

-

-    for (i=0; i<256; i++) {

-

-        crc = 0;

-        c   = (unsigned short) i;

-

-        for (j=0; j<8; j++) {

-

-            if ( (crc ^ c) & 0x0001 ) crc = ( crc >> 1 ) ^ P_16;

-            else                      crc =   crc >> 1;

-

-            c = c >> 1;

-        }

-

-        crc_tab16[i] = crc;

-    }

-

-    crc_tab16_init = TRUE;

-

-}  /* init_crc16_tab */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static void init_crckermit_tab( void );                         *

-    *                                                                   *

-    *   The function init_crckermit_tab() is used to fill the array     *

-    *   for calculation of the CRC Kermit with values.                  *

-    *                                                                   *

-    \*******************************************************************/

-

-static void init_crckermit_tab( void ) {

-

-    int i, j;

-    unsigned short crc, c;

-

-    for (i=0; i<256; i++) {

-

-        crc = 0;

-        c   = (unsigned short) i;

-

-        for (j=0; j<8; j++) {

-

-            if ( (crc ^ c) & 0x0001 ) crc = ( crc >> 1 ) ^ P_KERMIT;

-            else                      crc =   crc >> 1;

-

-            c = c >> 1;

-        }

-

-        crc_tabkermit[i] = crc;

-    }

-

-    crc_tabkermit_init = TRUE;

-

-}  /* init_crckermit_tab */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static void init_crcdnp_tab( void );                            *

-    *                                                                   *

-    *   The function init_crcdnp_tab() is used  to  fill  the  array    *

-    *   for calculation of the CRC-DNP with values.                     *

-    *                                                                   *

-    \*******************************************************************/

-

-static void init_crcdnp_tab( void ) {

-

-    int i, j;

-    unsigned short crc, c;

-

-    for (i=0; i<256; i++) {

-

-        crc = 0;

-        c   = (unsigned short) i;

-

-        for (j=0; j<8; j++) {

-

-            if ( (crc ^ c) & 0x0001 ) crc = ( crc >> 1 ) ^ P_DNP;

-            else                      crc =   crc >> 1;

-

-            c = c >> 1;

-        }

-

-        crc_tabdnp[i] = crc;

-    }

-

-    crc_tabdnp_init = TRUE;

-

-}  /* init_crcdnp_tab */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static void init_crc32_tab( void );                             *

-    *                                                                   *

-    *   The function init_crc32_tab() is used  to  fill  the  array     *

-    *   for calculation of the CRC-32 with values.                      *

-    *                                                                   *

-    \*******************************************************************/

-

-static void init_crc32_tab( void ) {

-

-    int i, j;

-    unsigned long crc;

-

-    for (i=0; i<256; i++) {

-

-        crc = (unsigned long) i;

-

-        for (j=0; j<8; j++) {

-

-            if ( crc & 0x00000001L ) crc = ( crc >> 1 ) ^ P_32;

-            else                     crc =   crc >> 1;

-        }

-

-        crc_tab32[i] = crc;

-    }

-

-    crc_tab32_init = TRUE;

-

-}  /* init_crc32_tab */

-

-

-

-    /*******************************************************************\

-    *                                                                   *

-    *   static void init_crcccitt_tab( void );                          *

-    *                                                                   *

-    *   The function init_crcccitt_tab() is used to fill the  array     *

-    *   for calculation of the CRC-CCITT with values.                   *

-    *                                                                   *

-    \*******************************************************************/

-

-static void init_crcccitt_tab( void ) {

-

-    int i, j;

-    unsigned short crc, c;

-

-    for (i=0; i<256; i++) {

-

-        crc = 0;

-        c   = ((unsigned short) i) << 8;

-

-        for (j=0; j<8; j++) {

-

-            if ( (crc ^ c) & 0x8000 ) crc = ( crc << 1 ) ^ P_CCITT;

-            else                      crc =   crc << 1;

-

-            c = c << 1;

-        }

-

-        crc_tabccitt[i] = crc;

-    }

-

-    crc_tabccitt_init = TRUE;

-

-}  /* init_crcccitt_tab */

diff --git a/contrib/lib_crc.h b/contrib/lib_crc.h
deleted file mode 100644
index 0e559e6..0000000
--- a/contrib/lib_crc.h
+++ /dev/null
@@ -1,66 +0,0 @@
-    /*******************************************************************\

-    *                                                                   *

-    *   Library         : lib_crc                                       *

-    *   File            : lib_crc.h                                     *

-    *   Author          : Lammert Bies  1999-2008                       *

-    *   E-mail          : info@lammertbies.nl                           *

-    *   Language        : ANSI C                                        *

-    *                                                                   *

-    *                                                                   *

-    *   Description                                                     *

-    *   ===========                                                     *

-    *                                                                   *

-    *   The file lib_crc.h contains public definitions  and  proto-     *

-    *   types for the CRC functions present in lib_crc.c.               *

-    *                                                                   *

-    *                                                                   *

-    *   Dependencies                                                    *

-    *   ============                                                    *

-    *                                                                   *

-    *   none                                                            *

-    *                                                                   *

-    *                                                                   *

-    *   Modification history                                            *

-    *   ====================                                            *

-    *                                                                   *

-    *   Date        Version Comment                                     *

-    *                                                                   *

-    *   2008-04-20  1.16    Added CRC-CCITT routine for Kermit          *

-    *                                                                   *

-    *   2007-04-01  1.15    Added CRC16 calculation for Modbus          *

-    *                                                                   *

-    *   2007-03-28  1.14    Added CRC16 routine for Sick devices        *

-    *                                                                   *

-    *   2005-12-17  1.13    Added CRC-CCITT with initial 0x1D0F         *

-    *                                                                   *

-    *   2005-02-14  1.12    Added CRC-CCITT with initial 0x0000         *

-    *                                                                   *

-    *   2005-02-05  1.11    Fixed bug in CRC-DNP routine                *

-    *                                                                   *

-    *   2005-02-04  1.10    Added CRC-DNP routines                      *

-    *                                                                   *

-    *   2005-01-07  1.02    Changes in tst_crc.c                        *

-    *                                                                   *

-    *   1999-02-21  1.01    Added FALSE and TRUE mnemonics              *

-    *                                                                   *

-    *   1999-01-22  1.00    Initial source                              *

-    *                                                                   *

-    \*******************************************************************/

-

-

-

-#define CRC_VERSION     "1.16"

-

-

-

-#define FALSE           0

-#define TRUE            1

-

-

-

-unsigned short          update_crc_16(     unsigned short crc, char c                 );

-unsigned long           update_crc_32(     unsigned long  crc, char c                 );

-unsigned short          update_crc_ccitt(  unsigned short crc, char c                 );

-unsigned short          update_crc_dnp(    unsigned short crc, char c                 );

-unsigned short          update_crc_kermit( unsigned short crc, char c                 );

-unsigned short          update_crc_sick(   unsigned short crc, char c, char prev_byte );