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-rw-r--r--lib/edioutput/Transport.cpp188
1 files changed, 188 insertions, 0 deletions
diff --git a/lib/edioutput/Transport.cpp b/lib/edioutput/Transport.cpp
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+/*
+ Copyright (C) 2019
+ Matthias P. Braendli, matthias.braendli@mpb.li
+
+ http://www.opendigitalradio.org
+
+ EDI output,
+ UDP and TCP transports and their configuration
+
+ */
+/*
+ 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 "Transport.h"
+#include <iterator>
+
+using namespace std;
+
+namespace edi {
+
+void configuration_t::print() const
+{
+ 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)) {
+ etiLog.level(info) << " UDP to " << udp_dest->dest_addr << ":" << dest_port;
+ if (not udp_dest->source_addr.empty()) {
+ etiLog.level(info) << " source " << udp_dest->source_addr;
+ etiLog.level(info) << " ttl " << udp_dest->ttl;
+ }
+ etiLog.level(info) << " source port " << udp_dest->source_port;
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_server_t>(edi_dest)) {
+ 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)) {
+ 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()) {
+ etiLog.level(info) << " interleave " << latency_frames * 24 << " ms";
+ }
+}
+
+
+Sender::Sender(const configuration_t& conf) :
+ m_conf(conf),
+ edi_pft(m_conf)
+{
+ if (m_conf.verbose) {
+ etiLog.log(info, "Setup EDI");
+ }
+
+ for (const auto& edi_dest : m_conf.destinations) {
+ if (const auto udp_dest = dynamic_pointer_cast<edi::udp_destination_t>(edi_dest)) {
+ auto udp_socket = std::make_shared<Socket::UDPSocket>(udp_dest->source_port);
+
+ if (not udp_dest->source_addr.empty()) {
+ udp_socket->setMulticastSource(udp_dest->source_addr.c_str());
+ udp_socket->setMulticastTTL(udp_dest->ttl);
+ }
+
+ udp_sockets.emplace(udp_dest.get(), udp_socket);
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_server_t>(edi_dest)) {
+ auto dispatcher = make_shared<Socket::TCPDataDispatcher>(tcp_dest->max_frames_queued);
+ dispatcher->start(tcp_dest->listen_port, "0.0.0.0");
+ tcp_dispatchers.emplace(tcp_dest.get(), dispatcher);
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_client_t>(edi_dest)) {
+ auto tcp_socket = make_shared<Socket::TCPSocket>();
+ tcp_socket->connect(tcp_dest->dest_addr, tcp_dest->dest_port);
+ tcp_senders.emplace(tcp_dest.get(), tcp_socket);
+ }
+ else {
+ throw logic_error("EDI destination not implemented");
+ }
+ }
+
+ if (m_conf.interleaver_enabled()) {
+ edi_interleaver.SetLatency(m_conf.latency_frames);
+ }
+
+ if (m_conf.dump) {
+ edi_debug_file.open("./edi.debug");
+ }
+
+ if (m_conf.verbose) {
+ etiLog.log(info, "EDI set up");
+ }
+}
+
+void Sender::write(const TagPacket& tagpacket)
+{
+ // Assemble into one AF Packet
+ edi::AFPacket af_packet = edi_afPacketiser.Assemble(tagpacket);
+
+ if (m_conf.enable_pft) {
+ // Apply PFT layer to AF Packet (Reed Solomon FEC and Fragmentation)
+ vector<edi::PFTFragment> edi_fragments = edi_pft.Assemble(af_packet);
+
+ if (m_conf.verbose) {
+ fprintf(stderr, "EDI number of PFT fragment before interleaver %zu\n",
+ edi_fragments.size());
+ }
+
+ if (m_conf.interleaver_enabled()) {
+ edi_fragments = edi_interleaver.Interleave(edi_fragments);
+ }
+
+ // Send over ethernet
+ for (const auto& edi_frag : edi_fragments) {
+ for (auto& dest : m_conf.destinations) {
+ if (const auto& udp_dest = dynamic_pointer_cast<edi::udp_destination_t>(dest)) {
+ Socket::InetAddress addr;
+ addr.resolveUdpDestination(udp_dest->dest_addr, m_conf.dest_port);
+
+ udp_sockets.at(udp_dest.get())->send(edi_frag, addr);
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_server_t>(dest)) {
+ tcp_dispatchers.at(tcp_dest.get())->write(edi_frag);
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_client_t>(dest)) {
+ tcp_senders.at(tcp_dest.get())->sendall(edi_frag.data(), edi_frag.size());
+ }
+ else {
+ throw logic_error("EDI destination not implemented");
+ }
+ }
+
+ if (m_conf.dump) {
+ ostream_iterator<uint8_t> debug_iterator(edi_debug_file);
+ copy(edi_frag.begin(), edi_frag.end(), debug_iterator);
+ }
+ }
+
+ if (m_conf.verbose) {
+ fprintf(stderr, "EDI number of PFT fragments %zu\n",
+ edi_fragments.size());
+ }
+ }
+ else {
+ // Send over ethernet
+ for (auto& dest : m_conf.destinations) {
+ if (const auto& udp_dest = dynamic_pointer_cast<edi::udp_destination_t>(dest)) {
+ Socket::InetAddress addr;
+ addr.resolveUdpDestination(udp_dest->dest_addr, m_conf.dest_port);
+
+ udp_sockets.at(udp_dest.get())->send(af_packet, addr);
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_server_t>(dest)) {
+ tcp_dispatchers.at(tcp_dest.get())->write(af_packet);
+ }
+ else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_client_t>(dest)) {
+ tcp_senders.at(tcp_dest.get())->sendall(af_packet.data(), af_packet.size());
+ }
+ else {
+ throw logic_error("EDI destination not implemented");
+ }
+ }
+
+ if (m_conf.dump) {
+ ostream_iterator<uint8_t> debug_iterator(edi_debug_file);
+ copy(af_packet.begin(), af_packet.end(), debug_iterator);
+ }
+ }
+}
+
+}