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Diffstat (limited to 'contrib/edioutput/PFT.h')
-rw-r--r-- | contrib/edioutput/PFT.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/contrib/edioutput/PFT.h b/contrib/edioutput/PFT.h new file mode 100644 index 0000000..4d138c5 --- /dev/null +++ b/contrib/edioutput/PFT.h @@ -0,0 +1,82 @@ +/* + 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 "EDIConfig.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 + uint16_t m_pseq = 0; + size_t m_num_chunks = 0; + bool m_verbose = false; + + // Transport header is always deactivated + const bool m_transport_header = false; + const uint16_t m_addr_source = 0; + const unsigned int m_dest_port = 0; +}; + +} + |