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https://github.com/zint/zint
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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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/* qrrs.h - Reed Solomon routines for QR Code
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This file pinched wholesale from libqrencode and unchanged hence
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original copyright and license applies as below
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*/
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/*
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* qrencode - QR Code encoder
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*
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* Reed solomon encoder. This code is taken from Phil Karn's libfec then
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* editted and packed into a pair of .c and .h files.
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*
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* Copyright (C) 2002, 2003, 2004, 2006 Phil Karn, KA9Q
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* (libfec is released under the GNU Lesser General Public License.)
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*
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* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __QRRS_H__
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#define __QRRS_H__
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/*
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* General purpose RS codec, 8-bit symbols.
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*/
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typedef struct _RS RS;
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/* WARNING: Thread unsafe!!! */
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extern RS *init_rs(int symsize, int gfpoly, int fcr, int prim, int nroots, int pad);
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extern void encode_rs_char(RS *rs, const unsigned char *data, unsigned char *parity);
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extern void free_rs_char(RS *rs);
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extern void free_rs_cache(void);
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#endif /* __QRRS_H__ */
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