1 /*====================================================================* 2 - Copyright (C) 2001 Leptonica. All rights reserved. 3 - This software is distributed in the hope that it will be 4 - useful, but with NO WARRANTY OF ANY KIND. 5 - No author or distributor accepts responsibility to anyone for the 6 - consequences of using this software, or for whether it serves any 7 - particular purpose or works at all, unless he or she says so in 8 - writing. Everyone is granted permission to copy, modify and 9 - redistribute this source code, for commercial or non-commercial 10 - purposes, with the following restrictions: (1) the origin of this 11 - source code must not be misrepresented; (2) modified versions must 12 - be plainly marked as such; and (3) this notice may not be removed 13 - or altered from any source or modified source distribution. 14 *====================================================================*/ 15 16 #ifndef LEPTONICA_READBARCODE_H 17 #define LEPTONICA_READBARCODE_H 18 19 /* ----------------------------------------------------------------- * 20 * Flags for method of extracting barcode widths * 21 * ----------------------------------------------------------------- */ 22 enum { 23 L_USE_WIDTHS = 1, /* use histogram of barcode widths */ 24 L_USE_WINDOWS = 2 /* find best window for decoding transitions */ 25 }; 26 27 /* ----------------------------------------------------------------- * 28 * Flags for barcode formats * 29 * These are used both to identify a barcode format and to identify * 30 * the decoding method to use on a barcode. * 31 * ----------------------------------------------------------------- */ 32 enum { 33 L_BF_UNKNOWN = 0, /* unknown format */ 34 L_BF_ANY = 1, /* try decoding with all known formats */ 35 L_BF_CODE128 = 2, /* decode with Code128 format */ 36 L_BF_EAN8 = 3, /* decode with EAN8 format */ 37 L_BF_EAN13 = 4, /* decode with EAN13 format */ 38 L_BF_CODE2OF5 = 5, /* decode with Code 2 of 5 format */ 39 L_BF_CODEI2OF5 = 6, /* decode with Interleaved 2 of 5 format */ 40 L_BF_CODE39 = 7, /* decode with Code39 format */ 41 L_BF_CODE93 = 8, /* decode with Code93 format */ 42 L_BF_CODABAR = 9, /* decode with Code93 format */ 43 L_BF_UPCA = 10 /* decode with UPC A format */ 44 }; 45 46 /* ----------------------------------------------------------------- * 47 * Currently supported formats * 48 * Update these arrays as new formats are added. * 49 * ----------------------------------------------------------------- */ 50 static const l_int32 SupportedBarcodeFormat[] = { 51 L_BF_CODE2OF5, 52 L_BF_CODEI2OF5, 53 L_BF_CODE93, 54 L_BF_CODE39, 55 L_BF_CODABAR, 56 L_BF_UPCA, 57 L_BF_EAN13 58 }; 59 static const char *SupportedBarcodeFormatName[] = { 60 "Code2of5", 61 "CodeI2of5", 62 "Code93", 63 "Code39", 64 "Codabar", 65 "Upca", 66 "Ean13" 67 }; 68 static const l_int32 NumSupportedBarcodeFormats = 7; 69 70 71 /* ----------------------------------------------------------------- * 72 * Code 2 of 5 symbology * 73 * ----------------------------------------------------------------- */ 74 static const char *Code2of5[] = { 75 "111121211", "211111112", "112111112", "212111111", /* 0 - 3 */ 76 "111121112", "211121111", "112121111", "111111212", /* 4 - 7 */ 77 "211111211", "112111211", /* 8 - 9 */ 78 "21211", "21112" /* Start, Stop */ 79 }; 80 81 static const l_int32 C25_START = 10; 82 static const l_int32 C25_STOP = 11; 83 84 85 /* ----------------------------------------------------------------- * 86 * Code Interleaved 2 of 5 symbology * 87 * ----------------------------------------------------------------- */ 88 static const char *CodeI2of5[] = { 89 "11221", "21112", "12112", "22111", "11212", /* 0 - 4 */ 90 "21211", "12211", "11122", "21121", "12121", /* 5 - 9 */ 91 "1111", "211" /* start, stop */ 92 }; 93 94 static const l_int32 CI25_START = 10; 95 static const l_int32 CI25_STOP = 11; 96 97 98 /* ----------------------------------------------------------------- * 99 * Code 93 symbology * 100 * ----------------------------------------------------------------- */ 101 static const char *Code93[] = { 102 "131112", "111213", "111312", "111411", "121113", /* 0: 0 - 4 */ 103 "121212", "121311", "111114", "131211", "141111", /* 5: 5 - 9 */ 104 "211113", "211212", "211311", "221112", "221211", /* 10: A - E */ 105 "231111", "112113", "112212", "112311", "122112", /* 15: F - J */ 106 "132111", "111123", "111222", "111321", "121122", /* 20: K - O */ 107 "131121", "212112", "212211", "211122", "211221", /* 25: P - T */ 108 "221121", "222111", "112122", "112221", "122121", /* 30: U - Y */ 109 "123111", "121131", "311112", "311211", "321111", /* 35: Z,-,.,SP,$ */ 110 "112131", "113121", "211131", "131221", "312111", /* 40: /,+,%,($),(%) */ 111 "311121", "122211", "111141" /* 45: (/),(+), Start */ 112 }; 113 114 /* Use "[]{}#" to represent special codes 43-47 */ 115 static const char Code93Val[] = 116 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%[]{}#"; 117 118 static const l_int32 C93_START = 47; 119 static const l_int32 C93_STOP = 47; 120 121 122 /* ----------------------------------------------------------------- * 123 * Code 39 symbology * 124 * ----------------------------------------------------------------- */ 125 static const char *Code39[] = { 126 "111221211", "211211112", "112211112", "212211111", /* 0: 0 - 3 */ 127 "111221112", "211221111", "112221111", "111211212", /* 4: 4 - 7 */ 128 "211211211", "112211211", "211112112", "112112112", /* 8: 8 - B */ 129 "212112111", "111122112", "211122111", "112122111", /* 12: C - F */ 130 "111112212", "211112211", "112112211", "111122211", /* 16: G - J */ 131 "211111122", "112111122", "212111121", "111121122", /* 20: K - N */ 132 "211121121", "112121121", "111111222", "211111221", /* 24: O - R */ 133 "112111221", "111121221", "221111112", "122111112", /* 28: S - V */ 134 "222111111", "121121112", "221121111", "122121111", /* 32: W - Z */ 135 "121111212", "221111211", "122111211", "121212111", /* 36: -,.,SP,$ */ 136 "121211121", "121112121", "111212121", "121121211" /* 40: /,+,%,* */ 137 }; 138 139 /* Use "*" to represent the Start and Stop codes (43) */ 140 static const char Code39Val[] = 141 "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*"; 142 143 static const l_int32 C39_START = 43; 144 static const l_int32 C39_STOP = 43; 145 146 147 /* ----------------------------------------------------------------- * 148 * Codabar symbology * 149 * ----------------------------------------------------------------- */ 150 static const char *Codabar[] = { 151 "1111122", "1111221", "1112112", "2211111", "1121121", /* 0: 0 - 4 */ 152 "2111121", "1211112", "1211211", "1221111", "2112111", /* 5: 5 - 9 */ 153 "1112211", "1122111", "2111212", "2121112", "2121211", /* 10: -,$,:,/,. */ 154 "1121212", "1122121", "1212112", "1112122", "1112221" /* 15: +,A,B,C,D */ 155 }; 156 157 /* Ascii representations for codes 16-19: (A or T), (B or N), (C or *), 158 * (D or E). These are used in pairs for the Start and Stop codes. */ 159 static const char CodabarVal[] = "0123456789-$:/.+ABCD"; 160 161 162 /* ----------------------------------------------------------------- * 163 * UPC-A symbology * 164 * ----------------------------------------------------------------- */ 165 static const char *Upca[] = { 166 "3211", "2221", "2122", "1411", "1132", /* 0: 0 - 4 */ 167 "1231", "1114", "1312", "1213", "3112", /* 5: 5 - 9 */ 168 "111", "111", "11111" /* 10: Start, Stop, Mid */ 169 }; 170 171 static const l_int32 UPCA_START = 10; 172 static const l_int32 UPCA_STOP = 11; 173 static const l_int32 UPCA_MID = 12; 174 175 176 /* ----------------------------------------------------------------- * 177 * Code128 symbology * 178 * ----------------------------------------------------------------- */ 179 static const char *Code128[] = { 180 "212222", "222122", "222221", "121223", "121322", /* 0 - 4 */ 181 "131222", "122213", "122312", "132212", "221213", /* 5 - 9 */ 182 "221312", "231212", "112232", "122132", "122231", /* 10 - 14 */ 183 "113222", "123122", "123221", "223211", "221132", /* 15 - 19 */ 184 "221231", "213212", "223112", "312131", "311222", /* 20 - 24 */ 185 "321122", "321221", "312212", "322112", "322211", /* 25 - 29 */ 186 "212123", "212321", "232121", "111323", "131123", /* 30 - 34 */ 187 "131321", "112313", "132113", "132311", "211313", /* 35 - 39 */ 188 "231113", "231311", "112133", "112331", "132131", /* 40 - 44 */ 189 "113123", "113321", "133121", "313121", "211331", /* 45 - 49 */ 190 "231131", "213113", "213311", "213131", "311123", /* 50 - 54 */ 191 "311321", "331121", "312113", "312311", "332111", /* 55 - 59 */ 192 "314111", "221411", "431111", "111224", "111422", /* 60 - 64 */ 193 "121124", "121421", "141122", "141221", "112214", /* 65 - 69 */ 194 "112412", "122114", "122411", "142112", "142211", /* 70 - 74 */ 195 "241211", "221114", "413111", "241112", "134111", /* 75 - 79 */ 196 "111242", "121142", "121241", "114212", "124112", /* 80 - 84 */ 197 "124211", "411212", "421112", "421211", "212141", /* 85 - 89 */ 198 "214121", "412121", "111143", "111341", "131141", /* 90 - 94 */ 199 "114113", "114311", "411113", "411311", "113141", /* 95 - 99 */ 200 "114131", "311141", "411131", "211412", "211214", /* 100 - 104 */ 201 "211232", "2331112" /* 105 - 106 */ 202 }; 203 204 static const l_int32 C128_FUN_3 = 96; /* in A or B only; in C it is 96 */ 205 static const l_int32 C128_FUNC_2 = 97; /* in A or B only; in C it is 97 */ 206 static const l_int32 C128_SHIFT = 98; /* in A or B only; in C it is 98 */ 207 static const l_int32 C128_GOTO_C = 99; /* in A or B only; in C it is 99 */ 208 static const l_int32 C128_GOTO_B = 100; 209 static const l_int32 C128_GOTO_A = 101; 210 static const l_int32 C128_FUNC_1 = 102; 211 static const l_int32 C128_START_A = 103; 212 static const l_int32 C128_START_B = 104; 213 static const l_int32 C128_START_C = 105; 214 static const l_int32 C128_STOP = 106; 215 /* code 128 symbols are 11 units */ 216 static const l_int32 C128_SYMBOL_WIDTH = 11; 217 218 219 220 #endif /* LEPTONICA_READBARCODE_H */ 221