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4e534c3a09
non-digit in numeral (both caused misencodation); replace `gm_macro_matrix[]` array with calculation (marginally slower but saves ~1.4k); replace `gm_shift_set[]` use with simple compares (performance); change GM_CHINESE/etc defines to numbers so can index into new `gm_shift_set[]` array (simplifies mode switching code); GM_NUMBER -> GM_NUMERAL, modules -> macromodules_per_dim, various other renamings to hopefully more explanatory names; various other changes (mostly performance) test suite: make use of new zxing-cpp diagnostics2 branch Grid Matrix decoder manual: slight clarification of `--gs1nocheck` BWIPP: latest
123 lines
5.7 KiB
C
123 lines
5.7 KiB
C
/* gridmtx.h - definitions for Grid Matrix */
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/*
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libzint - the open source barcode library
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Copyright (C) 2009-2026 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* SPDX-License-Identifier: BSD-3-Clause */
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#ifndef Z_GRIDMTX_H
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#define Z_GRIDMTX_H
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/* Following 2 tables based on Table 11 - Recommended error correction levels */
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static const short gm_recommend_cws[13] = {
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9, 30, 59, 114, 170, 237, 315, 405, 506, 618, 741, 875, 1021
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};
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static const short gm_max_cws[13] = {
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11, 40, 89, 146, 218, 305, 405, 521, 650, 794, 953, 1125, 1313
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};
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/* Maximum data codewords per ECL - ECL 1 not permitted for Version 1 */
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static const short gm_data_cws[13][5] = {
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/* 90% 80% 70% 60% 50% Total available codewords (Table 1) */
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{ 0, 15, 13, 11, 9 }, /*1 18 */
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{ 45, 40, 35, 30, 25 }, /*2 50 */
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{ 89, 79, 69, 59, 49 }, /*3 98 */
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{ 146, 130, 114, 98, 81 }, /*4 162 */
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{ 218, 194, 170, 146, 121 }, /*5 242 */
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{ 305, 271, 237, 203, 169 }, /*6 338 */
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{ 405, 360, 315, 270, 225 }, /*7 450 */
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{ 521, 463, 405, 347, 289 }, /*8 578 */
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{ 650, 578, 506, 434, 361 }, /*9 722 */
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{ 794, 706, 618, 530, 441 }, /*10 882 */
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{ 953, 847, 741, 635, 529 }, /*11 1058 */
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{ 1125, 1000, 875, 750, 625 }, /*12 1250 */
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{ 1313, 1167, 1021, 875, 729 }, /*13 1458 */
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};
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/* Table A.1 N1 */
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static const char gm_n1[13] = {
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18, 50, 98, 81, 121, 113, 113, 116, 121, 126, 118, 125, 122
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};
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/* Table A.1 B1 */
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static const char gm_b1[13] = {
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1, 1, 1, 2, 2, 2, 2, 3, 2, 7, 5, 10, 6
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};
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/* Table A.1 B2 */
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static const char gm_b2[13] = {
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0, 0, 0, 0, 0, 1, 2, 2, 4, 0, 4, 0, 6
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};
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/* Table A.1 E1, B3, E2 */
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static const char gm_e1b3e2[13][5][3] = {
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/* E1 B3 E2 */
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{ { 0, 0, 0 }, { 3, 1, 0 }, { 5, 1, 0 }, { 7, 1, 0 }, { 9, 1, 0 } }, /* 1 */
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{ { 5, 1, 0 }, { 10, 1, 0 }, { 15, 1, 0 }, { 20, 1, 0 }, { 25, 1, 0 } }, /* 2 */
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{ { 9, 1, 0 }, { 19, 1, 0 }, { 29, 1, 0 }, { 39, 1, 0 }, { 49, 1, 0 } }, /* 3 */
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{ { 8, 2, 0 }, { 16, 2, 0 }, { 24, 2, 0 }, { 32, 2, 0 }, { 41, 1, 40 } }, /* 4 */
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{ { 12, 2, 0 }, { 24, 2, 0 }, { 36, 2, 0 }, { 48, 2, 0 }, { 61, 1, 60 } }, /* 5 */
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{ { 11, 3, 0 }, { 23, 1, 22 }, { 34, 2, 33 }, { 45, 3, 0 }, { 57, 1, 56 } }, /* 6 */
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{ { 12, 1, 11 }, { 23, 2, 22 }, { 34, 3, 33 }, { 45, 4, 0 }, { 57, 1, 56 } }, /* 7 */
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{ { 12, 2, 11 }, { 23, 5, 0 }, { 35, 3, 34 }, { 47, 1, 46 }, { 58, 4, 57 } }, /* 8 */
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{ { 12, 6, 0 }, { 24, 6, 0 }, { 36, 6, 0 }, { 48, 6, 0 }, { 61, 1, 60 } }, /* 9 */
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{ { 13, 4, 12 }, { 26, 1, 25 }, { 38, 5, 37 }, { 51, 2, 50 }, { 63, 7, 0 } }, /* 10 */
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{ { 12, 6, 11 }, { 24, 4, 23 }, { 36, 2, 35 }, { 47, 9, 0 }, { 59, 7, 58 } }, /* 11 */
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{ { 13, 5, 12 }, { 25, 10, 0 }, { 38, 5, 37 }, { 50, 10, 0 }, { 63, 5, 62 } }, /* 12 */
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{ { 13, 1, 12 }, { 25, 3, 24 }, { 37, 5, 36 }, { 49, 7, 48 }, { 61, 9, 60 } } /* 13 */
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};
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/* Codewords to switch from `row` mode to `col` mode (Table 9 – Type conversion codes) */
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static const short gm_mode_switch[8][6] = {
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/* CHN NUM LWR UPR MXD BYT */
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{ 1, 2, 3, 4, 5, 7 }, /* 0 */
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{ 0, 8161, 8162, 8163, 8164, 8165 }, /* GM_CHINESE */
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{ 1019, 0, 1020, 1021, 1022, 1023 }, /* GM_NUMERAL */
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{ 28, 29, 0, 30, 124, 126 }, /* GM_LOWER */
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{ 28, 29, 30, 0, 124, 126 }, /* GM_UPPER */
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{ 1009, 1010, 1011, 1012, 0, 1015 }, /* GM_MIXED */
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{ 1, 2, 3, 4, 5, 0 }, /* GM_BYTE */
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{ 8160, 1018, 27, 27, 1008, 0 }, /* GM_EOD (end of data) */
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};
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/* Bit-lengths of above */
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static const char gm_mode_len[8][6] = {
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{ 4, 4, 4, 4, 4, 4 }, /* 0 */
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{ 0, 13, 13, 13, 13, 13 }, /* GM_CHINESE */
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{ 10, 0, 10, 10, 10, 10 }, /* GM_NUMERAL */
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{ 5, 5, 0, 5, 7, 7 }, /* GM_LOWER */
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{ 5, 5, 5, 0, 7, 7 }, /* GM_UPPER */
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{ 10, 10, 10, 10, 0, 10 }, /* GM_MIXED */
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{ 4, 4, 4, 4, 4, 0 }, /* GM_BYTE */
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{ 13, 10, 5, 5, 10, 4 }, /* GM_EOD (end of data) */
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};
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/* vim: set ts=4 sw=4 et : */
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#endif /* Z_GRIDMTX_H */
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