MMDVMHost-Private/NXDNCRC.h

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/*
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* Copyright (C) 2018 by Jonathan Naylor G4KLX
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*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined(NXDNCRC_H)
#define NXDNCRC_H
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#include <cstdint>
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class CNXDNCRC
{
public:
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static bool checkCRC6(const unsigned char* in, unsigned int length);
static void encodeCRC6(unsigned char* in, unsigned int length);
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static bool checkCRC12(const unsigned char* in, unsigned int length);
static void encodeCRC12(unsigned char* in, unsigned int length);
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static bool checkCRC15(const unsigned char* in, unsigned int length);
static void encodeCRC15(unsigned char* in, unsigned int length);
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private:
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static uint8_t createCRC6(const unsigned char* in, unsigned int length);
static uint16_t createCRC12(const unsigned char* in, unsigned int length);
static uint16_t createCRC15(const unsigned char* in, unsigned int length);
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};
#endif