From 78b4f04de2975da7b6240983fe1c6a496289a067 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Mon, 29 Jan 2024 14:31:55 +0100
Subject: Add ZMQ output to odr-zmq2edi

---
 src/zmq2edi/Sender.h | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 src/zmq2edi/Sender.h

(limited to 'src/zmq2edi/Sender.h')

diff --git a/src/zmq2edi/Sender.h b/src/zmq2edi/Sender.h
new file mode 100644
index 0000000..6dfd615
--- /dev/null
+++ b/src/zmq2edi/Sender.h
@@ -0,0 +1,98 @@
+/*
+   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/>.
+*/
+
+#pragma once
+#include <iostream>
+#include <iterator>
+#include <thread>
+#include <vector>
+#include <chrono>
+#include <atomic>
+#include "ThreadsafeQueue.h"
+#include "dabOutput/dabOutput.h"
+#include "edioutput/TagItems.h"
+#include "edioutput/TagPacket.h"
+#include "edioutput/Transport.h"
+
+// This metadata gets transmitted in the zmq stream
+struct metadata_t {
+    uint32_t edi_time = 0;
+    int16_t utc_offset = 0;
+    uint16_t dlfc = 0;
+};
+
+struct frame_t {
+    // Since a zmq message actually contains 4 frames, the
+    // original_zmq_msg is only non-empty for the first of the
+    // four calls to Sender::send_edi_frame().
+    zmq::message_t original_zmq_message;
+    std::vector<uint8_t> data;
+    metadata_t metadata;
+    std::chrono::steady_clock::time_point received_at;
+};
+
+struct zmq_send_config_t {
+    std::vector<std::string> urls;
+};
+
+class Sender {
+    public:
+        Sender();
+        Sender(const Sender& other) = delete;
+        Sender& operator=(const Sender& other) = delete;
+        ~Sender();
+        void start(const edi::configuration_t& conf,
+                const zmq_send_config_t& zmq_conf,
+                int delay_ms, bool drop_late_packets);
+        void push_frame(frame_t&& frame);
+        void print_configuration(void);
+
+    private:
+        void send_eti_frame(frame_t& frame);
+        void process(void);
+
+        int tist_delay_ms;
+        bool drop_late;
+        std::atomic<bool> running;
+        std::thread process_thread;
+        edi::configuration_t edi_conf;
+        ThreadsafeQueue<frame_t> frames;
+
+        std::shared_ptr<edi::Sender> edi_sender;
+
+        zmq::context_t zmq_ctx;
+        std::vector<zmq::socket_t> zmq_sockets;
+
+        struct buffering_stat_t {
+            // Time between when we received the packets and when we transmit packets, in microseconds
+            double buffering_time_us = 0.0;
+            bool late = false;
+        };
+        std::vector<buffering_stat_t> buffering_stats;
+        size_t num_zmq_send_errors = 0;
+
+};
-- 
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