74 lines
1.8 KiB
C++
74 lines
1.8 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) 2019, Libre Space Foundation <http://libre.space>
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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_CRC_H
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#define INCLUDED_SATNOGS_CRC_H
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#include <satnogs/api.h>
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namespace gr {
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namespace satnogs {
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/*!
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* CRC class providing a range of different CRC calculation static methods
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*
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*/
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class SATNOGS_API crc {
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public:
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typedef enum crc_type {
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CRC_NONE = 0,
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CRC16_CCITT,
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CRC16_CCITT_REVERSED,
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CRC16_AX25,
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CRC16_IBM,
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CRC32_C,
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CRC_METHODS_NUM
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} crc_t;
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static uint16_t
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crc16_ccitt_reversed(const uint8_t *data, size_t len);
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static uint16_t
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crc16_ccitt(const uint8_t *data, size_t len);
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static uint16_t
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crc16_ax25(const uint8_t *data, size_t len);
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static uint16_t
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crc16_ibm(const uint8_t *data, size_t len);
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static uint32_t
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crc32_c(const uint8_t *data, size_t len);
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static size_t
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crc_size(crc_t t);
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private:
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static const uint16_t crc16_ccitt_table_reverse[256];
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static const uint16_t crc16_ccitt_table[256];
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static const uint32_t crc32_c_table[256];
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};
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} // namespace satnogs
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} // namespace gr
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#endif /* INCLUDED_SATNOGS_CRC_H */
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