Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zint/backend/reedsol.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 This is a simple Reed-Solomon encoder
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3 (C) Cliff Hones 2004
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4 */
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5 /*
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6 libzint - the open source barcode library
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7 Copyright (C) 2009-2022 Robin Stuart <rstuart114@gmail.com>
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8
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9 Redistribution and use in source and binary forms, with or without
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10 modification, are permitted provided that the following conditions
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11 are met:
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13 1. Redistributions of source code must retain the above copyright
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14 notice, this list of conditions and the following disclaimer.
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15 2. Redistributions in binary form must reproduce the above copyright
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16 notice, this list of conditions and the following disclaimer in the
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17 documentation and/or other materials provided with the distribution.
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18 3. Neither the name of the project nor the names of its contributors
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19 may be used to endorse or promote products derived from this software
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20 without specific prior written permission.
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21
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22 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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23 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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25 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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26 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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31 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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32 SUCH DAMAGE.
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33
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34 */
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35 /* SPDX-License-Identifier: BSD-3-Clause */
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37 #ifndef Z_REEDSOL_H
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38 #define Z_REEDSOL_H
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40 #ifdef __cplusplus
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41 extern "C" {
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42 #endif /* __cplusplus */
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44 typedef struct {
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45 const unsigned char *logt; /* These are static */
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46 const unsigned char *alog;
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47 unsigned char rspoly[256]; /* Generated poly */
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48 unsigned char log_rspoly[256]; /* Logs of poly */
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49 int nsym; /* Degree of poly */
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50 int zero; /* Set if poly has a zero coeff */
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51 } rs_t;
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53 typedef struct {
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54 unsigned int *logt; /* These are malloced */
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55 unsigned int *alog;
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56 unsigned short rspoly[4096]; /* Generated poly, 12-bit max - needs to be enlarged if > 12-bit used */
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57 unsigned int log_rspoly[4096]; /* Logs of poly */
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58 int nsym; /* Degree of poly */
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59 int zero; /* Set if poly has a zero coeff */
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60 } rs_uint_t;
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61
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62 INTERNAL void rs_init_gf(rs_t *rs, const unsigned int prime_poly);
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63 INTERNAL void rs_init_code(rs_t *rs, const int nsym, int index);
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64 INTERNAL void rs_encode(const rs_t *rs, const int datalen, const unsigned char *data, unsigned char *res);
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65 INTERNAL void rs_encode_uint(const rs_t *rs, const int datalen, const unsigned int *data, unsigned int *res);
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66 /* No free needed as log tables static */
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68 INTERNAL int rs_uint_init_gf(rs_uint_t *rs_uint, const unsigned int prime_poly, const int logmod);
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69 INTERNAL void rs_uint_init_code(rs_uint_t *rs_uint, const int nsym, int index);
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70 INTERNAL void rs_uint_encode(const rs_uint_t *rs_uint, const int datalen, const unsigned int *data,
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71 unsigned int *res);
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72 INTERNAL void rs_uint_free(rs_uint_t *rs_uint);
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74 #ifdef __cplusplus
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75 }
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76 #endif /* __cplusplus */
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78 /* vim: set ts=4 sw=4 et : */
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79 #endif /* Z_REEDSOL_H */