78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
/* -*- c++ -*- */
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/*
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* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
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*
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* Copyright (C) 2016, Libre Space Foundation <http://librespacefoundation.org/>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_SATNOGS_WHITENING_H
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#define INCLUDED_SATNOGS_WHITENING_H
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#include <satnogs/api.h>
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#include <gnuradio/digital/lfsr.h>
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#include <boost/shared_ptr.hpp>
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namespace gr {
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namespace satnogs {
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/*!
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* \brief Performs data whitening and de-whitening
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*
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*/
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class SATNOGS_API whitening {
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public:
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static int base_unique_id;
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int
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unique_id();
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typedef boost::shared_ptr<whitening> whitening_sptr;
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static whitening_sptr
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make(uint32_t mask, uint32_t seed, uint32_t order);
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static whitening_sptr
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make_ccsds();
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whitening(uint32_t mask, uint32_t seed, uint32_t order);
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~whitening();
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void
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reset();
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void
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scramble(uint8_t *out, const uint8_t *in, size_t len, bool msb = false);
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void
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descramble(uint8_t *out, const uint8_t *in, size_t len, bool msb = false);
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void
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scramble_one_bit_per_byte(uint8_t *out, const uint8_t *in, size_t bits_num);
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void
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descramble_one_bit_per_byte(uint8_t *out, const uint8_t *in,
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size_t bits_num);
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private:
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digital::lfsr d_lfsr;
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int d_id;
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};
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} // namespace satnogs
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} // namespace gr
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#endif /* INCLUDED_SATNOGS_WHITENING_H */
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