A streamlined version (for embedded use) of Jeff Brown's ZBar library. Visit <http://zbar.sourceforge.net> for more details.
Dependents: BarcodeReader_F103
decoder/code39.c@1:4f5c042a2d34, 2020-01-10 (annotated)
- Committer:
- hudakz
- Date:
- Fri Jan 10 22:06:18 2020 +0000
- Revision:
- 1:4f5c042a2d34
- Parent:
- 0:e33621169e44
Streamlined barcode reader library.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
hudakz | 0:e33621169e44 | 1 | /*------------------------------------------------------------------------ |
hudakz | 0:e33621169e44 | 2 | * Copyright 2008-2009 (c) Jeff Brown <spadix@users.sourceforge.net> |
hudakz | 0:e33621169e44 | 3 | * |
hudakz | 0:e33621169e44 | 4 | * This file is part of the ZBar Bar Code Reader. |
hudakz | 0:e33621169e44 | 5 | * |
hudakz | 0:e33621169e44 | 6 | * The ZBar Bar Code Reader is free software; you can redistribute it |
hudakz | 0:e33621169e44 | 7 | * and/or modify it under the terms of the GNU Lesser Public License as |
hudakz | 0:e33621169e44 | 8 | * published by the Free Software Foundation; either version 2.1 of |
hudakz | 0:e33621169e44 | 9 | * the License, or (at your option) any later version. |
hudakz | 0:e33621169e44 | 10 | * |
hudakz | 0:e33621169e44 | 11 | * The ZBar Bar Code Reader is distributed in the hope that it will be |
hudakz | 0:e33621169e44 | 12 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
hudakz | 0:e33621169e44 | 13 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
hudakz | 0:e33621169e44 | 14 | * GNU Lesser Public License for more details. |
hudakz | 0:e33621169e44 | 15 | * |
hudakz | 0:e33621169e44 | 16 | * You should have received a copy of the GNU Lesser Public License |
hudakz | 0:e33621169e44 | 17 | * along with the ZBar Bar Code Reader; if not, write to the Free |
hudakz | 0:e33621169e44 | 18 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
hudakz | 0:e33621169e44 | 19 | * Boston, MA 02110-1301 USA |
hudakz | 0:e33621169e44 | 20 | * |
hudakz | 0:e33621169e44 | 21 | * http://sourceforge.net/projects/zbar |
hudakz | 0:e33621169e44 | 22 | *------------------------------------------------------------------------*/ |
hudakz | 0:e33621169e44 | 23 | |
hudakz | 0:e33621169e44 | 24 | #include "../config.h" |
hudakz | 0:e33621169e44 | 25 | #include <string.h> /* memmove */ |
hudakz | 0:e33621169e44 | 26 | |
hudakz | 0:e33621169e44 | 27 | #ifdef ENABLE_CODE39 |
hudakz | 0:e33621169e44 | 28 | |
hudakz | 0:e33621169e44 | 29 | #include <zbar.h> |
hudakz | 0:e33621169e44 | 30 | #include "../decoder.h" |
hudakz | 0:e33621169e44 | 31 | |
hudakz | 0:e33621169e44 | 32 | #ifdef DEBUG_CODE39 |
hudakz | 0:e33621169e44 | 33 | # define DEBUG_LEVEL DEBUG_CODE39 |
hudakz | 0:e33621169e44 | 34 | #endif |
hudakz | 0:e33621169e44 | 35 | #include "../debug.h" |
hudakz | 0:e33621169e44 | 36 | |
hudakz | 0:e33621169e44 | 37 | #define NUM_CHARS (0x2c) |
hudakz | 0:e33621169e44 | 38 | |
hudakz | 0:e33621169e44 | 39 | static const unsigned char code39_hi[32] = { |
hudakz | 0:e33621169e44 | 40 | 0x80 | 0x00, /* 2 next */ |
hudakz | 0:e33621169e44 | 41 | 0x40 | 0x02, /* 4 */ |
hudakz | 0:e33621169e44 | 42 | 0x80 | 0x06, /* 2 next */ |
hudakz | 0:e33621169e44 | 43 | 0xc0 | 0x08, /* 2 skip */ |
hudakz | 0:e33621169e44 | 44 | 0x40 | 0x0a, /* 4 */ |
hudakz | 0:e33621169e44 | 45 | 0x80 | 0x0e, /* 2 next */ |
hudakz | 0:e33621169e44 | 46 | 0xc0 | 0x10, /* 2 skip */ |
hudakz | 0:e33621169e44 | 47 | 0x00 | 0x12, /* direct */ |
hudakz | 0:e33621169e44 | 48 | |
hudakz | 0:e33621169e44 | 49 | 0x80 | 0x13, /* 2 next */ |
hudakz | 0:e33621169e44 | 50 | 0xc0 | 0x15, /* 2 skip */ |
hudakz | 0:e33621169e44 | 51 | 0x80 | 0x17, /* 2 next */ |
hudakz | 0:e33621169e44 | 52 | 0xff, |
hudakz | 0:e33621169e44 | 53 | 0xc0 | 0x19, /* 2 skip */ |
hudakz | 0:e33621169e44 | 54 | 0x00 | 0x1b, /* direct */ |
hudakz | 0:e33621169e44 | 55 | 0xff, |
hudakz | 0:e33621169e44 | 56 | 0xff, |
hudakz | 0:e33621169e44 | 57 | |
hudakz | 0:e33621169e44 | 58 | 0x40 | 0x1c, /* 4 */ |
hudakz | 0:e33621169e44 | 59 | 0x80 | 0x20, /* 2 next */ |
hudakz | 0:e33621169e44 | 60 | 0xc0 | 0x22, /* 2 skip */ |
hudakz | 0:e33621169e44 | 61 | 0x00 | 0x24, /* direct */ |
hudakz | 0:e33621169e44 | 62 | 0x80 | 0x25, /* 2 next */ |
hudakz | 0:e33621169e44 | 63 | 0xff, |
hudakz | 0:e33621169e44 | 64 | 0x00 | 0x27, /* direct */ |
hudakz | 0:e33621169e44 | 65 | 0xff, |
hudakz | 0:e33621169e44 | 66 | |
hudakz | 0:e33621169e44 | 67 | 0xc0 | 0x28, /* 2 skip */ |
hudakz | 0:e33621169e44 | 68 | 0x00 | 0x2a, /* direct */ |
hudakz | 0:e33621169e44 | 69 | 0xff, |
hudakz | 0:e33621169e44 | 70 | 0xff, |
hudakz | 0:e33621169e44 | 71 | 0x00 | 0x2b, /* direct */ |
hudakz | 0:e33621169e44 | 72 | 0xff, |
hudakz | 0:e33621169e44 | 73 | 0xff, |
hudakz | 0:e33621169e44 | 74 | 0xff, |
hudakz | 0:e33621169e44 | 75 | }; |
hudakz | 0:e33621169e44 | 76 | |
hudakz | 0:e33621169e44 | 77 | typedef struct char39_s { |
hudakz | 0:e33621169e44 | 78 | unsigned char chk, rev, fwd; |
hudakz | 0:e33621169e44 | 79 | } char39_t; |
hudakz | 0:e33621169e44 | 80 | |
hudakz | 0:e33621169e44 | 81 | static const char39_t code39_encodings[NUM_CHARS] = { |
hudakz | 0:e33621169e44 | 82 | { 0x07, 0x1a, 0x20 }, /* 00 */ |
hudakz | 0:e33621169e44 | 83 | { 0x0d, 0x10, 0x03 }, /* 01 */ |
hudakz | 0:e33621169e44 | 84 | { 0x13, 0x17, 0x22 }, /* 02 */ |
hudakz | 0:e33621169e44 | 85 | { 0x16, 0x1d, 0x23 }, /* 03 */ |
hudakz | 0:e33621169e44 | 86 | { 0x19, 0x0d, 0x05 }, /* 04 */ |
hudakz | 0:e33621169e44 | 87 | { 0x1c, 0x13, 0x06 }, /* 05 */ |
hudakz | 0:e33621169e44 | 88 | { 0x25, 0x07, 0x0c }, /* 06 */ |
hudakz | 0:e33621169e44 | 89 | { 0x2a, 0x2a, 0x27 }, /* 07 */ |
hudakz | 0:e33621169e44 | 90 | { 0x31, 0x04, 0x0e }, /* 08 */ |
hudakz | 0:e33621169e44 | 91 | { 0x34, 0x00, 0x0f }, /* 09 */ |
hudakz | 0:e33621169e44 | 92 | { 0x43, 0x15, 0x25 }, /* 0a */ |
hudakz | 0:e33621169e44 | 93 | { 0x46, 0x1c, 0x26 }, /* 0b */ |
hudakz | 0:e33621169e44 | 94 | { 0x49, 0x0b, 0x08 }, /* 0c */ |
hudakz | 0:e33621169e44 | 95 | { 0x4c, 0x12, 0x09 }, /* 0d */ |
hudakz | 0:e33621169e44 | 96 | { 0x52, 0x19, 0x2b }, /* 0e */ |
hudakz | 0:e33621169e44 | 97 | { 0x58, 0x0f, 0x00 }, /* 0f */ |
hudakz | 0:e33621169e44 | 98 | { 0x61, 0x02, 0x11 }, /* 10 */ |
hudakz | 0:e33621169e44 | 99 | { 0x64, 0x09, 0x12 }, /* 11 */ |
hudakz | 0:e33621169e44 | 100 | { 0x70, 0x06, 0x13 }, /* 12 */ |
hudakz | 0:e33621169e44 | 101 | { 0x85, 0x24, 0x16 }, /* 13 */ |
hudakz | 0:e33621169e44 | 102 | { 0x8a, 0x29, 0x28 }, /* 14 */ |
hudakz | 0:e33621169e44 | 103 | { 0x91, 0x21, 0x18 }, /* 15 */ |
hudakz | 0:e33621169e44 | 104 | { 0x94, 0x2b, 0x19 }, /* 16 */ |
hudakz | 0:e33621169e44 | 105 | { 0xa2, 0x28, 0x29 }, /* 17 */ |
hudakz | 0:e33621169e44 | 106 | { 0xa8, 0x27, 0x2a }, /* 18 */ |
hudakz | 0:e33621169e44 | 107 | { 0xc1, 0x1f, 0x1b }, /* 19 */ |
hudakz | 0:e33621169e44 | 108 | { 0xc4, 0x26, 0x1c }, /* 1a */ |
hudakz | 0:e33621169e44 | 109 | { 0xd0, 0x23, 0x1d }, /* 1b */ |
hudakz | 0:e33621169e44 | 110 | { 0x03, 0x14, 0x1e }, /* 1c */ |
hudakz | 0:e33621169e44 | 111 | { 0x06, 0x1b, 0x1f }, /* 1d */ |
hudakz | 0:e33621169e44 | 112 | { 0x09, 0x0a, 0x01 }, /* 1e */ |
hudakz | 0:e33621169e44 | 113 | { 0x0c, 0x11, 0x02 }, /* 1f */ |
hudakz | 0:e33621169e44 | 114 | { 0x12, 0x18, 0x21 }, /* 20 */ |
hudakz | 0:e33621169e44 | 115 | { 0x18, 0x0e, 0x04 }, /* 21 */ |
hudakz | 0:e33621169e44 | 116 | { 0x21, 0x01, 0x0a }, /* 22 */ |
hudakz | 0:e33621169e44 | 117 | { 0x24, 0x08, 0x0b }, /* 23 */ |
hudakz | 0:e33621169e44 | 118 | { 0x30, 0x05, 0x0d }, /* 24 */ |
hudakz | 0:e33621169e44 | 119 | { 0x42, 0x16, 0x24 }, /* 25 */ |
hudakz | 0:e33621169e44 | 120 | { 0x48, 0x0c, 0x07 }, /* 26 */ |
hudakz | 0:e33621169e44 | 121 | { 0x60, 0x03, 0x10 }, /* 27 */ |
hudakz | 0:e33621169e44 | 122 | { 0x81, 0x1e, 0x14 }, /* 28 */ |
hudakz | 0:e33621169e44 | 123 | { 0x84, 0x25, 0x15 }, /* 29 */ |
hudakz | 0:e33621169e44 | 124 | { 0x90, 0x22, 0x17 }, /* 2a */ |
hudakz | 0:e33621169e44 | 125 | { 0xc0, 0x20, 0x1a }, /* 2b */ |
hudakz | 0:e33621169e44 | 126 | }; |
hudakz | 0:e33621169e44 | 127 | |
hudakz | 0:e33621169e44 | 128 | static const unsigned char code39_characters[NUM_CHARS] = |
hudakz | 0:e33621169e44 | 129 | "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*"; |
hudakz | 0:e33621169e44 | 130 | |
hudakz | 0:e33621169e44 | 131 | static inline unsigned char code39_decode1 (unsigned char enc, |
hudakz | 0:e33621169e44 | 132 | unsigned e, |
hudakz | 0:e33621169e44 | 133 | unsigned s) |
hudakz | 0:e33621169e44 | 134 | { |
hudakz | 0:e33621169e44 | 135 | unsigned char E = decode_e(e, s, 36); |
hudakz | 0:e33621169e44 | 136 | if(E > 7) |
hudakz | 0:e33621169e44 | 137 | return(0xff); |
hudakz | 0:e33621169e44 | 138 | enc <<= 1; |
hudakz | 0:e33621169e44 | 139 | if(E > 2) { |
hudakz | 0:e33621169e44 | 140 | enc |= 1; |
hudakz | 0:e33621169e44 | 141 | dprintf(2, "1"); |
hudakz | 0:e33621169e44 | 142 | } |
hudakz | 0:e33621169e44 | 143 | else |
hudakz | 0:e33621169e44 | 144 | dprintf(2, "0"); |
hudakz | 0:e33621169e44 | 145 | return(enc); |
hudakz | 0:e33621169e44 | 146 | } |
hudakz | 0:e33621169e44 | 147 | |
hudakz | 0:e33621169e44 | 148 | static inline signed char code39_decode9 (zbar_decoder_t *dcode) |
hudakz | 0:e33621169e44 | 149 | { |
hudakz | 0:e33621169e44 | 150 | code39_decoder_t *dcode39 = &dcode->code39; |
hudakz | 0:e33621169e44 | 151 | |
hudakz | 0:e33621169e44 | 152 | dprintf(2, " s=%d ", dcode39->s9); |
hudakz | 0:e33621169e44 | 153 | if(dcode39->s9 < 9) |
hudakz | 0:e33621169e44 | 154 | return(-1); |
hudakz | 0:e33621169e44 | 155 | |
hudakz | 0:e33621169e44 | 156 | /* threshold bar width ratios */ |
hudakz | 0:e33621169e44 | 157 | unsigned char i, enc = 0; |
hudakz | 0:e33621169e44 | 158 | for(i = 0; i < 5; i++) { |
hudakz | 0:e33621169e44 | 159 | enc = code39_decode1(enc, get_width(dcode, i), dcode39->s9); |
hudakz | 0:e33621169e44 | 160 | if(enc == 0xff) |
hudakz | 0:e33621169e44 | 161 | return(-1); |
hudakz | 0:e33621169e44 | 162 | } |
hudakz | 0:e33621169e44 | 163 | zassert(enc < 0x20, -1, " enc=%x s9=%x\n", enc, dcode39->s9); |
hudakz | 0:e33621169e44 | 164 | |
hudakz | 0:e33621169e44 | 165 | /* lookup first 5 encoded widths for coarse decode */ |
hudakz | 0:e33621169e44 | 166 | unsigned char idx = code39_hi[enc]; |
hudakz | 0:e33621169e44 | 167 | if(idx == 0xff) |
hudakz | 0:e33621169e44 | 168 | return(-1); |
hudakz | 0:e33621169e44 | 169 | |
hudakz | 0:e33621169e44 | 170 | /* encode remaining widths (NB first encoded width is lost) */ |
hudakz | 0:e33621169e44 | 171 | for(; i < 9; i++) { |
hudakz | 0:e33621169e44 | 172 | enc = code39_decode1(enc, get_width(dcode, i), dcode39->s9); |
hudakz | 0:e33621169e44 | 173 | if(enc == 0xff) |
hudakz | 0:e33621169e44 | 174 | return(-1); |
hudakz | 0:e33621169e44 | 175 | } |
hudakz | 0:e33621169e44 | 176 | |
hudakz | 0:e33621169e44 | 177 | if((idx & 0xc0) == 0x80) |
hudakz | 0:e33621169e44 | 178 | idx = (idx & 0x3f) + ((enc >> 3) & 1); |
hudakz | 0:e33621169e44 | 179 | else if((idx & 0xc0) == 0xc0) |
hudakz | 0:e33621169e44 | 180 | idx = (idx & 0x3f) + ((enc >> 2) & 1); |
hudakz | 0:e33621169e44 | 181 | else if(idx & 0xc0) |
hudakz | 0:e33621169e44 | 182 | idx = (idx & 0x3f) + ((enc >> 2) & 3); |
hudakz | 0:e33621169e44 | 183 | zassert(idx < 0x2c, -1, " idx=%x enc=%x s9=%x\n", idx, enc, dcode39->s9); |
hudakz | 0:e33621169e44 | 184 | |
hudakz | 0:e33621169e44 | 185 | const char39_t *c = &code39_encodings[idx]; |
hudakz | 0:e33621169e44 | 186 | dprintf(2, " i=%02x chk=%02x c=%02x/%02x", idx, c->chk, c->fwd, c->rev); |
hudakz | 0:e33621169e44 | 187 | if(enc != c->chk) |
hudakz | 0:e33621169e44 | 188 | return(-1); |
hudakz | 0:e33621169e44 | 189 | |
hudakz | 0:e33621169e44 | 190 | dcode39->width = dcode39->s9; |
hudakz | 0:e33621169e44 | 191 | return((dcode39->direction) ? c->rev : c->fwd); |
hudakz | 0:e33621169e44 | 192 | } |
hudakz | 0:e33621169e44 | 193 | |
hudakz | 0:e33621169e44 | 194 | static inline signed char code39_decode_start (zbar_decoder_t *dcode) |
hudakz | 0:e33621169e44 | 195 | { |
hudakz | 0:e33621169e44 | 196 | code39_decoder_t *dcode39 = &dcode->code39; |
hudakz | 0:e33621169e44 | 197 | |
hudakz | 0:e33621169e44 | 198 | signed char c = code39_decode9(dcode); |
hudakz | 0:e33621169e44 | 199 | if(c == 0x19) |
hudakz | 0:e33621169e44 | 200 | dcode39->direction ^= 1; |
hudakz | 0:e33621169e44 | 201 | else if(c != 0x2b) { |
hudakz | 0:e33621169e44 | 202 | dprintf(2, "\n"); |
hudakz | 0:e33621169e44 | 203 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 204 | } |
hudakz | 0:e33621169e44 | 205 | |
hudakz | 0:e33621169e44 | 206 | /* check leading quiet zone - spec is 10x */ |
hudakz | 0:e33621169e44 | 207 | unsigned quiet = get_width(dcode, 9); |
hudakz | 0:e33621169e44 | 208 | if(quiet && quiet < dcode39->s9 / 2) { |
hudakz | 0:e33621169e44 | 209 | dprintf(2, " [invalid quiet]\n"); |
hudakz | 0:e33621169e44 | 210 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 211 | } |
hudakz | 0:e33621169e44 | 212 | |
hudakz | 0:e33621169e44 | 213 | dcode39->element = 9; |
hudakz | 0:e33621169e44 | 214 | dcode39->character = 0; |
hudakz | 0:e33621169e44 | 215 | dprintf(1, " dir=%x [valid start]\n", dcode39->direction); |
hudakz | 0:e33621169e44 | 216 | return(ZBAR_PARTIAL); |
hudakz | 0:e33621169e44 | 217 | } |
hudakz | 0:e33621169e44 | 218 | |
hudakz | 0:e33621169e44 | 219 | static inline void code39_postprocess (zbar_decoder_t *dcode) |
hudakz | 0:e33621169e44 | 220 | { |
hudakz | 0:e33621169e44 | 221 | code39_decoder_t *dcode39 = &dcode->code39; |
hudakz | 0:e33621169e44 | 222 | int i; |
hudakz | 0:e33621169e44 | 223 | if(dcode39->direction) { |
hudakz | 0:e33621169e44 | 224 | /* reverse buffer */ |
hudakz | 0:e33621169e44 | 225 | dprintf(2, " (rev)"); |
hudakz | 0:e33621169e44 | 226 | for(i = 0; i < dcode39->character / 2; i++) { |
hudakz | 0:e33621169e44 | 227 | unsigned j = dcode39->character - 1 - i; |
hudakz | 0:e33621169e44 | 228 | char code = dcode->buf[i]; |
hudakz | 0:e33621169e44 | 229 | dcode->buf[i] = dcode->buf[j]; |
hudakz | 0:e33621169e44 | 230 | dcode->buf[j] = code; |
hudakz | 0:e33621169e44 | 231 | } |
hudakz | 0:e33621169e44 | 232 | } |
hudakz | 0:e33621169e44 | 233 | for(i = 0; i < dcode39->character; i++) |
hudakz | 0:e33621169e44 | 234 | dcode->buf[i] = ((dcode->buf[i] < 0x2b) |
hudakz | 0:e33621169e44 | 235 | ? code39_characters[(unsigned)dcode->buf[i]] |
hudakz | 0:e33621169e44 | 236 | : '?'); |
hudakz | 0:e33621169e44 | 237 | dcode->buflen = i; |
hudakz | 0:e33621169e44 | 238 | dcode->buf[i] = '\0'; |
hudakz | 0:e33621169e44 | 239 | } |
hudakz | 0:e33621169e44 | 240 | |
hudakz | 0:e33621169e44 | 241 | zbar_symbol_type_t _zbar_decode_code39 (zbar_decoder_t *dcode) |
hudakz | 0:e33621169e44 | 242 | { |
hudakz | 0:e33621169e44 | 243 | code39_decoder_t *dcode39 = &dcode->code39; |
hudakz | 0:e33621169e44 | 244 | |
hudakz | 0:e33621169e44 | 245 | /* update latest character width */ |
hudakz | 0:e33621169e44 | 246 | dcode39->s9 -= get_width(dcode, 9); |
hudakz | 0:e33621169e44 | 247 | dcode39->s9 += get_width(dcode, 0); |
hudakz | 0:e33621169e44 | 248 | |
hudakz | 0:e33621169e44 | 249 | if(dcode39->character < 0) { |
hudakz | 0:e33621169e44 | 250 | if(get_color(dcode) != ZBAR_BAR) |
hudakz | 0:e33621169e44 | 251 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 252 | dprintf(2, " code39:"); |
hudakz | 0:e33621169e44 | 253 | return((zbar_symbol_type_t)code39_decode_start(dcode)); |
hudakz | 0:e33621169e44 | 254 | } |
hudakz | 0:e33621169e44 | 255 | |
hudakz | 0:e33621169e44 | 256 | if(++dcode39->element < 9) |
hudakz | 0:e33621169e44 | 257 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 258 | |
hudakz | 0:e33621169e44 | 259 | dprintf(2, " code39[%c%02d+%x]", |
hudakz | 0:e33621169e44 | 260 | (dcode39->direction) ? '<' : '>', |
hudakz | 0:e33621169e44 | 261 | dcode39->character, dcode39->element); |
hudakz | 0:e33621169e44 | 262 | |
hudakz | 0:e33621169e44 | 263 | if(dcode39->element == 10) { |
hudakz | 0:e33621169e44 | 264 | unsigned space = get_width(dcode, 0); |
hudakz | 0:e33621169e44 | 265 | if(dcode39->character && |
hudakz | 0:e33621169e44 | 266 | dcode->buf[dcode39->character - 1] == 0x2b) { /* STOP */ |
hudakz | 0:e33621169e44 | 267 | /* trim STOP character */ |
hudakz | 0:e33621169e44 | 268 | dcode39->character--; |
hudakz | 0:e33621169e44 | 269 | zbar_symbol_type_t sym = ZBAR_CODE39; |
hudakz | 0:e33621169e44 | 270 | |
hudakz | 0:e33621169e44 | 271 | /* trailing quiet zone check */ |
hudakz | 0:e33621169e44 | 272 | if(space && space < dcode39->width / 2) { |
hudakz | 0:e33621169e44 | 273 | dprintf(2, " [invalid qz]\n"); |
hudakz | 0:e33621169e44 | 274 | sym = ZBAR_NONE; |
hudakz | 0:e33621169e44 | 275 | } |
hudakz | 0:e33621169e44 | 276 | else if(dcode39->character < CFG(*dcode39, ZBAR_CFG_MIN_LEN) || |
hudakz | 0:e33621169e44 | 277 | (CFG(*dcode39, ZBAR_CFG_MAX_LEN) > 0 && |
hudakz | 0:e33621169e44 | 278 | dcode39->character > CFG(*dcode39, ZBAR_CFG_MAX_LEN))) { |
hudakz | 0:e33621169e44 | 279 | dprintf(2, " [invalid len]\n"); |
hudakz | 0:e33621169e44 | 280 | sym = ZBAR_NONE; |
hudakz | 0:e33621169e44 | 281 | } |
hudakz | 0:e33621169e44 | 282 | else { |
hudakz | 0:e33621169e44 | 283 | /* FIXME checksum (needs config enable) */ |
hudakz | 0:e33621169e44 | 284 | code39_postprocess(dcode); |
hudakz | 0:e33621169e44 | 285 | dprintf(2, " [valid end]\n"); |
hudakz | 0:e33621169e44 | 286 | } |
hudakz | 0:e33621169e44 | 287 | dcode39->character = -1; |
hudakz | 0:e33621169e44 | 288 | if(!sym) |
hudakz | 0:e33621169e44 | 289 | dcode->lock = ZBAR_NONE; |
hudakz | 0:e33621169e44 | 290 | return(sym); |
hudakz | 0:e33621169e44 | 291 | } |
hudakz | 0:e33621169e44 | 292 | if(space > dcode39->width / 2) { |
hudakz | 0:e33621169e44 | 293 | /* inter-character space check failure */ |
hudakz | 0:e33621169e44 | 294 | dcode->lock = ZBAR_NONE; |
hudakz | 0:e33621169e44 | 295 | dcode39->character = -1; |
hudakz | 0:e33621169e44 | 296 | dprintf(2, " ics>%d [invalid ics]", dcode39->width); |
hudakz | 0:e33621169e44 | 297 | } |
hudakz | 0:e33621169e44 | 298 | dcode39->element = ZBAR_NONE; |
hudakz | 0:e33621169e44 | 299 | dprintf(2, "\n"); |
hudakz | 0:e33621169e44 | 300 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 301 | } |
hudakz | 0:e33621169e44 | 302 | |
hudakz | 0:e33621169e44 | 303 | signed char c = code39_decode9(dcode); |
hudakz | 0:e33621169e44 | 304 | dprintf(2, " c=%d", c); |
hudakz | 0:e33621169e44 | 305 | |
hudakz | 0:e33621169e44 | 306 | /* lock shared resources */ |
hudakz | 0:e33621169e44 | 307 | if(!dcode39->character && get_lock(dcode, ZBAR_CODE39)) { |
hudakz | 0:e33621169e44 | 308 | dcode39->character = -1; |
hudakz | 0:e33621169e44 | 309 | dprintf(1, " [locked %d]\n", dcode->lock); |
hudakz | 0:e33621169e44 | 310 | return(ZBAR_PARTIAL); |
hudakz | 0:e33621169e44 | 311 | } |
hudakz | 0:e33621169e44 | 312 | |
hudakz | 0:e33621169e44 | 313 | if(c < 0 || |
hudakz | 0:e33621169e44 | 314 | ((dcode39->character >= BUFFER_MIN) && |
hudakz | 0:e33621169e44 | 315 | size_buf(dcode, dcode39->character + 1))) { |
hudakz | 0:e33621169e44 | 316 | dprintf(1, (c < 0) ? " [aborted]\n" : " [overflow]\n"); |
hudakz | 0:e33621169e44 | 317 | dcode->lock = ZBAR_NONE; |
hudakz | 0:e33621169e44 | 318 | dcode39->character = -1; |
hudakz | 0:e33621169e44 | 319 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 320 | } |
hudakz | 0:e33621169e44 | 321 | else { |
hudakz | 0:e33621169e44 | 322 | zassert(c < 0x2c, ZBAR_NONE, "c=%02x s9=%x\n", c, dcode39->s9); |
hudakz | 0:e33621169e44 | 323 | dprintf(2, "\n"); |
hudakz | 0:e33621169e44 | 324 | } |
hudakz | 0:e33621169e44 | 325 | |
hudakz | 0:e33621169e44 | 326 | dcode->buf[dcode39->character++] = c; |
hudakz | 0:e33621169e44 | 327 | |
hudakz | 0:e33621169e44 | 328 | return(ZBAR_NONE); |
hudakz | 0:e33621169e44 | 329 | } |
hudakz | 0:e33621169e44 | 330 | |
hudakz | 0:e33621169e44 | 331 | #endif |