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-rw-r--r--src/zmq2edi/Sender.cpp320
1 files changed, 0 insertions, 320 deletions
diff --git a/src/zmq2edi/Sender.cpp b/src/zmq2edi/Sender.cpp
deleted file mode 100644
index fe46846..0000000
--- a/src/zmq2edi/Sender.cpp
+++ /dev/null
@@ -1,320 +0,0 @@
-/*
- 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) 2024
- Matthias P. Braendli, matthias.braendli@mpb.li
-
- http://www.opendigitalradio.org
- */
-/*
- This file is part of ODR-DabMux.
-
- ODR-DabMux 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,
- 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 "Sender.h"
-#include "Log.h"
-#include <cmath>
-#include <numeric>
-#include <map>
-#include <algorithm>
-#include <limits>
-
-using namespace std;
-
-Sender::Sender() :
- zmq_ctx(2)
-{
-}
-
-Sender::~Sender()
-{
- if (running.load()) {
- running.store(false);
-
- // Unblock thread
- frame_t emptyframe;
- frames.push(std::move(emptyframe));
-
- process_thread.join();
- }
-}
-
-void Sender::start(const edi::configuration_t& conf,
- const zmq_send_config_t& zmq_conf,
- int delay_ms, bool drop_late_packets)
-{
- edi_conf = conf;
- tist_delay_ms = delay_ms;
- drop_late = drop_late_packets;
-
- edi_sender = make_shared<edi::Sender>(edi_conf);
-
- for (const auto& url : zmq_conf.urls) {
- zmq::socket_t zmq_sock(zmq_ctx, ZMQ_PUB);
- zmq_sock.bind(url.c_str());
- zmq_sockets.emplace_back(std::move(zmq_sock));
- }
-
- running.store(true);
- process_thread = thread(&Sender::process, this);
-}
-
-void Sender::push_frame(frame_t&& frame)
-{
- frames.push(std::move(frame));
-}
-
-void Sender::print_configuration()
-{
- if (edi_conf.enabled()) {
- edi_conf.print();
- }
- else {
- etiLog.level(info) << "EDI disabled";
- }
-}
-
-void Sender::send_eti_frame(frame_t& frame)
-{
- uint8_t *p = frame.data.data();
-
- edi::TagDETI edi_tagDETI;
- edi::TagStarPTR edi_tagStarPtr("DETI");
- map<int, edi::TagESTn> edi_subchannelToTag;
- // The above Tag Items will be assembled into a TAG Packet
- edi::TagPacket edi_tagpacket(edi_conf.tagpacket_alignment);
-
- // SYNC
- edi_tagDETI.stat = p[0];
-
- // LIDATA FCT
- edi_tagDETI.dlfc = frame.metadata.dlfc;
-
- const int fct = p[4];
- if (frame.metadata.dlfc % 250 != fct) {
- etiLog.level(warn) << "Frame FCT=" << fct <<
- " does not correspond to DLFC=" << frame.metadata.dlfc;
- }
-
- bool ficf = (p[5] & 0x80) >> 7;
- edi_tagDETI.ficf = ficf;
-
- const int nst = p[5] & 0x7F;
-
- edi_tagDETI.fp = (p[6] & 0xE0) >> 5;
- const int mid = (p[6] & 0x18) >> 3;
- edi_tagDETI.mid = mid;
- //const int fl = (p[6] & 0x07) * 256 + p[7];
-
- int ficl = 0;
- if (ficf == 0) {
- etiLog.level(warn) << "Not FIC in data stream!";
- return;
- }
- else if (mid == 3) {
- ficl = 32;
- }
- else {
- ficl = 24;
- }
-
- vector<uint32_t> sad(nst);
- vector<uint32_t> stl(nst);
- // Loop over STC subchannels:
- for (int i=0; i < nst; i++) {
- // EDI stream index is 1-indexed
- const int edi_stream_id = i + 1;
-
- uint32_t scid = (p[8 + 4*i] & 0xFC) >> 2;
- sad[i] = (p[8+4*i] & 0x03) * 256 + p[9+4*i];
- uint32_t tpl = (p[10+4*i] & 0xFC) >> 2;
- stl[i] = (p[10+4*i] & 0x03) * 256 + \
- p[11+4*i];
-
- edi::TagESTn tag_ESTn;
- tag_ESTn.id = edi_stream_id;
- tag_ESTn.scid = scid;
- tag_ESTn.sad = sad[i];
- tag_ESTn.tpl = tpl;
- tag_ESTn.rfa = 0; // two bits
- tag_ESTn.mst_length = stl[i];
- tag_ESTn.mst_data = nullptr;
-
- edi_subchannelToTag[i] = tag_ESTn;
- }
-
- uint16_t mnsc = 0;
- std::memcpy(&mnsc, p + 8 + 4*nst, sizeof(uint16_t));
- edi_tagDETI.mnsc = mnsc;
-
- /*const uint16_t crc1 = p[8 + 4*nst + 2]*256 + \
- p[8 + 4*nst + 3]; */
-
- edi_tagDETI.fic_data = p + 12 + 4*nst;
- edi_tagDETI.fic_length = ficl * 4;
-
- // loop over MSC subchannels
- int offset = 0;
- for (int i=0; i < nst; i++) {
- edi::TagESTn& tag = edi_subchannelToTag[i];
- tag.mst_data = (p + 12 + 4*nst + ficf*ficl*4 + offset);
-
- offset += stl[i] * 8;
- }
-
- /*
- const uint16_t crc2 = p[12 + 4*nst + ficf*ficl*4 + offset] * 256 + \
- p[12 + 4*nst + ficf*ficl*4 + offset + 1]; */
-
- // TIST
- const size_t tist_ix = 12 + 4*nst + ficf*ficl*4 + offset + 4;
- uint32_t tist = (uint32_t)(p[tist_ix]) << 24 |
- (uint32_t)(p[tist_ix+1]) << 16 |
- (uint32_t)(p[tist_ix+2]) << 8 |
- (uint32_t)(p[tist_ix+3]);
-
- std::time_t posix_timestamp_1_jan_2000 = 946684800;
-
- // Wait until our time is tist_delay after the TIST before
- // we release that frame
-
- using namespace std::chrono;
-
- const auto pps_offset = milliseconds(std::lrint((tist & 0xFFFFFF) / 16384.0));
- const auto t_frame = system_clock::from_time_t(
- frame.metadata.edi_time + posix_timestamp_1_jan_2000 - frame.metadata.utc_offset) + pps_offset;
-
- const auto t_release = t_frame + milliseconds(tist_delay_ms);
- const auto t_now = system_clock::now();
-
- const bool late = t_release < t_now;
-
- buffering_stat_t stat;
- stat.late = late;
-
- if (not late) {
- const auto wait_time = t_release - t_now;
- std::this_thread::sleep_for(wait_time);
- }
-
- stat.buffering_time_us = duration_cast<microseconds>(steady_clock::now() - frame.received_at).count();
- buffering_stats.push_back(std::move(stat));
-
- if (late and drop_late) {
- return;
- }
-
- edi_tagDETI.tsta = tist;
- edi_tagDETI.atstf = 1;
- edi_tagDETI.utco = frame.metadata.utc_offset;
- edi_tagDETI.seconds = frame.metadata.edi_time;
-
- if (edi_sender and edi_conf.enabled()) {
- // put tags *ptr, DETI and all subchannels into one TagPacket
- edi_tagpacket.tag_items.push_back(&edi_tagStarPtr);
- edi_tagpacket.tag_items.push_back(&edi_tagDETI);
-
- for (auto& tag : edi_subchannelToTag) {
- edi_tagpacket.tag_items.push_back(&tag.second);
- }
-
- edi_sender->write(edi_tagpacket);
- }
-
- if (not frame.original_zmq_message.empty()) {
- for (auto& sock : zmq_sockets) {
- const auto send_result = sock.send(frame.original_zmq_message, zmq::send_flags::dontwait);
- if (not send_result.has_value()) {
- num_zmq_send_errors++;
- }
- }
- }
-}
-
-void Sender::process()
-{
- while (running.load()) {
- frame_t frame;
- frames.wait_and_pop(frame);
-
- if (not running.load() or frame.data.empty()) {
- break;
- }
-
- if (frame.data.size() == 6144) {
- send_eti_frame(frame);
- }
- else {
- etiLog.level(warn) << "Ignoring short ETI frame, "
- "DFLC=" << frame.metadata.dlfc << ", len=" <<
- frame.data.size();
- }
-
- if (buffering_stats.size() == 250) { // every six seconds
- const double n = buffering_stats.size();
-
- size_t num_late = std::count_if(buffering_stats.begin(), buffering_stats.end(),
- [](const buffering_stat_t& s){ return s.late; });
-
- double sum = 0.0;
- double min = std::numeric_limits<double>::max();
- double max = -std::numeric_limits<double>::max();
- for (const auto& s : buffering_stats) {
- // convert to milliseconds
- const double t = s.buffering_time_us / 1000.0;
- sum += t;
-
- if (t < min) {
- min = t;
- }
-
- if (t > max) {
- max = t;
- }
- }
- double mean = sum / n;
-
- double sq_sum = 0;
- for (const auto& s : buffering_stats) {
- const double t = s.buffering_time_us / 1000.0;
- sq_sum += (t-mean) * (t-mean);
- }
- double stdev = sqrt(sq_sum / n);
-
- /* Debug code
- stringstream ss;
- ss << "times:";
- for (const auto t : buffering_stats) {
- ss << " " << lrint(t.buffering_time_us / 1000.0);
- }
- etiLog.level(debug) << ss.str();
- // */
-
- etiLog.level(info) << "Buffering time statistics [milliseconds]:"
- " min: " << min <<
- " max: " << max <<
- " mean: " << mean <<
- " stdev: " << stdev <<
- " late: " <<
- num_late << " of " << buffering_stats.size() << " (" <<
- num_late * 100.0 / n << "%) " <<
- "Num ZMQ send errors: " << num_zmq_send_errors;
-
- buffering_stats.clear();
- }
- }
-}
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