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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-08-21 10:11:35 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-08-21 10:11:35 +0200
commit86ea8cd8b8b5af7917db28ae30cfb2d2886868fe (patch)
tree7222d8e077dd2155eecac68b8c78330bcfe5dc80 /lib/edioutput/PFT.h
parent86fbf91f7323a2c5626a357b8414b15e20c19c9e (diff)
parent5ee85c4ac41337e383eb1a735bc05f1e5d46a98f (diff)
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Merge branch 'ediInput' into next
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+/*
+ Copyright (C) 2019
+ Matthias P. Braendli, matthias.braendli@mpb.li
+
+ http://www.opendigitalradio.org
+
+ EDI output,
+ Protection, Fragmentation and Transport. (PFT)
+
+ Are supported:
+ Reed-Solomon and Fragmentation
+
+ This implements part of PFT as defined ETSI TS 102 821.
+
+ */
+/*
+ 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
+
+#include "config.h"
+#include <vector>
+#include <list>
+#include <stdexcept>
+#include <cstdint>
+#include "AFPacket.h"
+#include "Log.h"
+#include "ReedSolomon.h"
+#include "Config.h"
+
+namespace edi {
+
+typedef std::vector<uint8_t> RSBlock;
+typedef std::vector<uint8_t> PFTFragment;
+
+class PFT
+{
+ public:
+ static constexpr int PARITYBYTES = 48;
+
+ PFT();
+ PFT(const configuration_t& conf);
+
+ // return a list of PFT fragments with the correct
+ // PFT headers
+ std::vector< PFTFragment > Assemble(AFPacket af_packet);
+
+ // Apply Reed-Solomon FEC to the AF Packet
+ RSBlock Protect(AFPacket af_packet);
+
+ // Cut a RSBlock into several fragments that can be transmitted
+ std::vector< std::vector<uint8_t> > ProtectAndFragment(AFPacket af_packet);
+
+ private:
+ unsigned int m_k = 207; // length of RS data word
+ unsigned int m_m = 3; // number of fragments that can be recovered if lost
+ unsigned int m_dest_port = 12000; // Destination port for transport header
+ uint16_t m_pseq = 0;
+ size_t m_num_chunks = 0;
+ bool m_verbose = 0;
+};
+
+}
+