Ryo Hagimoto
ZBar bar code reader . http://zbar.sourceforge.net/ ZBar is licensed under the GNU LGPL 2.1 to enable development of both open source and commercial projects.
Dependents: GR-PEACH_Camera_in_barcode levkov_ov7670
LICENSE
The ZBar Bar Code Reader is Copyright (C) 2007-2009 Jeff Brown <spadix@users.sourceforge.net> The QR Code reader is Copyright (C) 1999-2009 Timothy B. Terriberry <tterribe@xiph.org>
You can redistribute this library and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
ISAAC is based on the public domain implementation by Robert J. Jenkins Jr., and is itself public domain.
Portions of the bit stream reader are copyright (C) The Xiph.Org Foundation 1994-2008, and are licensed under a BSD-style license.
The Reed-Solomon decoder is derived from an implementation (C) 1991-1995 Henry Minsky (hqm@ua.com, hqm@ai.mit.edu), and is licensed under the LGPL with permission.
zbar/img_scanner.c@1:500d42699c34, 2016-04-19 (annotated)
- Committer:
- RyoheiHagimoto
- Date:
- Tue Apr 19 02:19:39 2016 +0000
- Revision:
- 1:500d42699c34
- Parent:
- 0:56c5742b9e2b
Add copying.txt and license.txt
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| RyoheiHagimoto | 0:56c5742b9e2b | 1 | /*------------------------------------------------------------------------ |
| RyoheiHagimoto | 0:56c5742b9e2b | 2 | * Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net> |
| RyoheiHagimoto | 0:56c5742b9e2b | 3 | * |
| RyoheiHagimoto | 0:56c5742b9e2b | 4 | * This file is part of the ZBar Bar Code Reader. |
| RyoheiHagimoto | 0:56c5742b9e2b | 5 | * |
| RyoheiHagimoto | 0:56c5742b9e2b | 6 | * The ZBar Bar Code Reader is free software; you can redistribute it |
| RyoheiHagimoto | 0:56c5742b9e2b | 7 | * and/or modify it under the terms of the GNU Lesser Public License as |
| RyoheiHagimoto | 0:56c5742b9e2b | 8 | * published by the Free Software Foundation; either version 2.1 of |
| RyoheiHagimoto | 0:56c5742b9e2b | 9 | * the License, or (at your option) any later version. |
| RyoheiHagimoto | 0:56c5742b9e2b | 10 | * |
| RyoheiHagimoto | 0:56c5742b9e2b | 11 | * The ZBar Bar Code Reader is distributed in the hope that it will be |
| RyoheiHagimoto | 0:56c5742b9e2b | 12 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
| RyoheiHagimoto | 0:56c5742b9e2b | 13 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| RyoheiHagimoto | 0:56c5742b9e2b | 14 | * GNU Lesser Public License for more details. |
| RyoheiHagimoto | 0:56c5742b9e2b | 15 | * |
| RyoheiHagimoto | 0:56c5742b9e2b | 16 | * You should have received a copy of the GNU Lesser Public License |
| RyoheiHagimoto | 0:56c5742b9e2b | 17 | * along with the ZBar Bar Code Reader; if not, write to the Free |
| RyoheiHagimoto | 0:56c5742b9e2b | 18 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| RyoheiHagimoto | 0:56c5742b9e2b | 19 | * Boston, MA 02110-1301 USA |
| RyoheiHagimoto | 0:56c5742b9e2b | 20 | * |
| RyoheiHagimoto | 0:56c5742b9e2b | 21 | * http://sourceforge.net/projects/zbar |
| RyoheiHagimoto | 0:56c5742b9e2b | 22 | *------------------------------------------------------------------------*/ |
| RyoheiHagimoto | 0:56c5742b9e2b | 23 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 24 | #include <config.h> |
| RyoheiHagimoto | 0:56c5742b9e2b | 25 | #if (0) // not used |
| RyoheiHagimoto | 0:56c5742b9e2b | 26 | #include <unistd.h> |
| RyoheiHagimoto | 0:56c5742b9e2b | 27 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 28 | #ifdef HAVE_INTTYPES_H |
| RyoheiHagimoto | 0:56c5742b9e2b | 29 | # include <inttypes.h> |
| RyoheiHagimoto | 0:56c5742b9e2b | 30 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 31 | #include <stdlib.h> /* malloc, free */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 32 | #include <time.h> /* clock_gettime */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 33 | #if (0) // not used |
| RyoheiHagimoto | 0:56c5742b9e2b | 34 | #include <sys/time.h> /* gettimeofday */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 35 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 36 | #include <string.h> /* memcmp, memset, memcpy */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 37 | #include <assert.h> |
| RyoheiHagimoto | 0:56c5742b9e2b | 38 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 39 | #include <zbar.h> |
| RyoheiHagimoto | 0:56c5742b9e2b | 40 | #include "error.h" |
| RyoheiHagimoto | 0:56c5742b9e2b | 41 | #include "image.h" |
| RyoheiHagimoto | 0:56c5742b9e2b | 42 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 43 | # include "qrcode.h" |
| RyoheiHagimoto | 0:56c5742b9e2b | 44 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 45 | #include "img_scanner.h" |
| RyoheiHagimoto | 0:56c5742b9e2b | 46 | #include "svg.h" |
| RyoheiHagimoto | 0:56c5742b9e2b | 47 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 48 | #if 1 |
| RyoheiHagimoto | 0:56c5742b9e2b | 49 | # define ASSERT_POS \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 50 | assert(p == data + x + y * (intptr_t)w) |
| RyoheiHagimoto | 0:56c5742b9e2b | 51 | #else |
| RyoheiHagimoto | 0:56c5742b9e2b | 52 | # define ASSERT_POS |
| RyoheiHagimoto | 0:56c5742b9e2b | 53 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 54 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 55 | /* FIXME cache setting configurability */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 56 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 57 | /* number of times the same result must be detected |
| RyoheiHagimoto | 0:56c5742b9e2b | 58 | * in "nearby" images before being reported |
| RyoheiHagimoto | 0:56c5742b9e2b | 59 | */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 60 | #define CACHE_CONSISTENCY 3 /* images */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 61 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 62 | /* time interval for which two images are considered "nearby" |
| RyoheiHagimoto | 0:56c5742b9e2b | 63 | */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 64 | #define CACHE_PROXIMITY 1000 /* ms */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 65 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 66 | /* time that a result must *not* be detected before |
| RyoheiHagimoto | 0:56c5742b9e2b | 67 | * it will be reported again |
| RyoheiHagimoto | 0:56c5742b9e2b | 68 | */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 69 | #define CACHE_HYSTERESIS 2000 /* ms */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 70 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 71 | /* time after which cache entries are invalidated |
| RyoheiHagimoto | 0:56c5742b9e2b | 72 | */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 73 | #define CACHE_TIMEOUT (CACHE_HYSTERESIS * 2) /* ms */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 74 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 75 | #define NUM_SCN_CFGS (ZBAR_CFG_Y_DENSITY - ZBAR_CFG_X_DENSITY + 1) |
| RyoheiHagimoto | 0:56c5742b9e2b | 76 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 77 | #define CFG(iscn, cfg) ((iscn)->configs[(cfg) - ZBAR_CFG_X_DENSITY]) |
| RyoheiHagimoto | 0:56c5742b9e2b | 78 | #define TEST_CFG(iscn, cfg) (((iscn)->config >> ((cfg) - ZBAR_CFG_POSITION)) & 1) |
| RyoheiHagimoto | 0:56c5742b9e2b | 79 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 80 | #ifndef NO_STATS |
| RyoheiHagimoto | 0:56c5742b9e2b | 81 | # define STAT(x) iscn->stat_##x++ |
| RyoheiHagimoto | 0:56c5742b9e2b | 82 | #else |
| RyoheiHagimoto | 0:56c5742b9e2b | 83 | # define STAT(...) |
| RyoheiHagimoto | 0:56c5742b9e2b | 84 | # define dump_stats(...) |
| RyoheiHagimoto | 0:56c5742b9e2b | 85 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 86 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 87 | #define RECYCLE_BUCKETS 5 |
| RyoheiHagimoto | 0:56c5742b9e2b | 88 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 89 | typedef struct recycle_bucket_s { |
| RyoheiHagimoto | 0:56c5742b9e2b | 90 | int nsyms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 91 | zbar_symbol_t *head; |
| RyoheiHagimoto | 0:56c5742b9e2b | 92 | } recycle_bucket_t; |
| RyoheiHagimoto | 0:56c5742b9e2b | 93 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 94 | /* image scanner state */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 95 | struct zbar_image_scanner_s { |
| RyoheiHagimoto | 0:56c5742b9e2b | 96 | zbar_scanner_t *scn; /* associated linear intensity scanner */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 97 | zbar_decoder_t *dcode; /* associated symbol decoder */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 98 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 99 | qr_reader *qr; /* QR Code 2D reader */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 100 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 101 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 102 | const void *userdata; /* application data */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 103 | /* user result callback */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 104 | zbar_image_data_handler_t *handler; |
| RyoheiHagimoto | 0:56c5742b9e2b | 105 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 106 | unsigned long time; /* scan start time */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 107 | zbar_image_t *img; /* currently scanning image *root* */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 108 | int dx, dy, du, umin, v; /* current scan direction */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 109 | zbar_symbol_set_t *syms; /* previous decode results */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 110 | /* recycled symbols in 4^n size buckets */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 111 | recycle_bucket_t recycle[RECYCLE_BUCKETS]; |
| RyoheiHagimoto | 0:56c5742b9e2b | 112 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 113 | int enable_cache; /* current result cache state */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 114 | zbar_symbol_t *cache; /* inter-image result cache entries */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 115 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 116 | /* configuration settings */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 117 | unsigned config; /* config flags */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 118 | int configs[NUM_SCN_CFGS]; /* int valued configurations */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 119 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 120 | #ifndef NO_STATS |
| RyoheiHagimoto | 0:56c5742b9e2b | 121 | int stat_syms_new; |
| RyoheiHagimoto | 0:56c5742b9e2b | 122 | int stat_iscn_syms_inuse, stat_iscn_syms_recycle; |
| RyoheiHagimoto | 0:56c5742b9e2b | 123 | int stat_img_syms_inuse, stat_img_syms_recycle; |
| RyoheiHagimoto | 0:56c5742b9e2b | 124 | int stat_sym_new; |
| RyoheiHagimoto | 0:56c5742b9e2b | 125 | int stat_sym_recycle[RECYCLE_BUCKETS]; |
| RyoheiHagimoto | 0:56c5742b9e2b | 126 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 127 | }; |
| RyoheiHagimoto | 0:56c5742b9e2b | 128 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 129 | void _zbar_image_scanner_recycle_syms (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 130 | zbar_symbol_t *sym) |
| RyoheiHagimoto | 0:56c5742b9e2b | 131 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 132 | zbar_symbol_t *next = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 133 | for(; sym; sym = next) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 134 | next = sym->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 135 | if(sym->refcnt && _zbar_refcnt(&sym->refcnt, -1)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 136 | /* unlink referenced symbol */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 137 | /* FIXME handle outstanding component refs (currently unsupported) |
| RyoheiHagimoto | 0:56c5742b9e2b | 138 | */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 139 | assert(sym->data_alloc); |
| RyoheiHagimoto | 0:56c5742b9e2b | 140 | sym->next = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 141 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 142 | else { |
| RyoheiHagimoto | 0:56c5742b9e2b | 143 | /* recycle unreferenced symbol */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 144 | if(!sym->data_alloc) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 145 | sym->data = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 146 | sym->datalen = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 147 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 148 | if(sym->syms) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 149 | if(_zbar_refcnt(&sym->syms->refcnt, -1)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 150 | assert(0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 151 | _zbar_image_scanner_recycle_syms(iscn, sym->syms->head); |
| RyoheiHagimoto | 0:56c5742b9e2b | 152 | sym->syms->head = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 153 | _zbar_symbol_set_free(sym->syms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 154 | sym->syms = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 155 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 156 | int i; |
| RyoheiHagimoto | 0:56c5742b9e2b | 157 | for(i = 0; i < RECYCLE_BUCKETS; i++) |
| RyoheiHagimoto | 0:56c5742b9e2b | 158 | if(sym->data_alloc < 1 << (i * 2)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 159 | break; |
| RyoheiHagimoto | 0:56c5742b9e2b | 160 | if(i == RECYCLE_BUCKETS) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 161 | assert(sym->data); |
| RyoheiHagimoto | 0:56c5742b9e2b | 162 | free(sym->data); |
| RyoheiHagimoto | 0:56c5742b9e2b | 163 | sym->data = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 164 | sym->data_alloc = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 165 | i = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 166 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 167 | recycle_bucket_t *bucket = &iscn->recycle[i]; |
| RyoheiHagimoto | 0:56c5742b9e2b | 168 | /* FIXME cap bucket fill */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 169 | bucket->nsyms++; |
| RyoheiHagimoto | 0:56c5742b9e2b | 170 | sym->next = bucket->head; |
| RyoheiHagimoto | 0:56c5742b9e2b | 171 | bucket->head = sym; |
| RyoheiHagimoto | 0:56c5742b9e2b | 172 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 173 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 174 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 175 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 176 | static inline int recycle_syms (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 177 | zbar_symbol_set_t *syms) |
| RyoheiHagimoto | 0:56c5742b9e2b | 178 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 179 | if(_zbar_refcnt(&syms->refcnt, -1)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 180 | return(1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 181 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 182 | _zbar_image_scanner_recycle_syms(iscn, syms->head); |
| RyoheiHagimoto | 0:56c5742b9e2b | 183 | syms->head = syms->tail = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 184 | syms->nsyms = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 185 | return(0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 186 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 187 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 188 | inline void zbar_image_scanner_recycle_image (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 189 | zbar_image_t *img) |
| RyoheiHagimoto | 0:56c5742b9e2b | 190 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 191 | zbar_symbol_set_t *syms = iscn->syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 192 | if(syms && syms->refcnt) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 193 | if(recycle_syms(iscn, syms)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 194 | STAT(iscn_syms_inuse); |
| RyoheiHagimoto | 0:56c5742b9e2b | 195 | iscn->syms = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 196 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 197 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 198 | STAT(iscn_syms_recycle); |
| RyoheiHagimoto | 0:56c5742b9e2b | 199 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 200 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 201 | syms = img->syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 202 | img->syms = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 203 | if(syms && recycle_syms(iscn, syms)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 204 | STAT(img_syms_inuse); |
| RyoheiHagimoto | 0:56c5742b9e2b | 205 | syms = iscn->syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 206 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 207 | else if(syms) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 208 | STAT(img_syms_recycle); |
| RyoheiHagimoto | 0:56c5742b9e2b | 209 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 210 | /* select one set to resurrect, destroy the other */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 211 | if(iscn->syms) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 212 | _zbar_symbol_set_free(syms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 213 | syms = iscn->syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 214 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 215 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 216 | iscn->syms = syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 217 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 218 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 219 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 220 | inline zbar_symbol_t* |
| RyoheiHagimoto | 0:56c5742b9e2b | 221 | _zbar_image_scanner_alloc_sym (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 222 | zbar_symbol_type_t type, |
| RyoheiHagimoto | 0:56c5742b9e2b | 223 | int datalen) |
| RyoheiHagimoto | 0:56c5742b9e2b | 224 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 225 | /* recycle old or alloc new symbol */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 226 | int i; |
| RyoheiHagimoto | 0:56c5742b9e2b | 227 | for(i = 0; i < RECYCLE_BUCKETS - 1; i++) |
| RyoheiHagimoto | 0:56c5742b9e2b | 228 | if(datalen <= 1 << (i * 2)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 229 | break; |
| RyoheiHagimoto | 0:56c5742b9e2b | 230 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 231 | zbar_symbol_t *sym = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 232 | for(; i > 0; i--) |
| RyoheiHagimoto | 0:56c5742b9e2b | 233 | if((sym = iscn->recycle[i].head)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 234 | STAT(sym_recycle[i]); |
| RyoheiHagimoto | 0:56c5742b9e2b | 235 | break; |
| RyoheiHagimoto | 0:56c5742b9e2b | 236 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 237 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 238 | if(sym) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 239 | iscn->recycle[i].head = sym->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 240 | sym->next = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 241 | assert(iscn->recycle[i].nsyms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 242 | iscn->recycle[i].nsyms--; |
| RyoheiHagimoto | 0:56c5742b9e2b | 243 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 244 | else { |
| RyoheiHagimoto | 0:56c5742b9e2b | 245 | sym = calloc(1, sizeof(zbar_symbol_t)); |
| RyoheiHagimoto | 0:56c5742b9e2b | 246 | STAT(sym_new); |
| RyoheiHagimoto | 0:56c5742b9e2b | 247 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 248 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 249 | /* init new symbol */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 250 | sym->type = type; |
| RyoheiHagimoto | 0:56c5742b9e2b | 251 | sym->quality = 1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 252 | sym->npts = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 253 | sym->cache_count = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 254 | sym->time = iscn->time; |
| RyoheiHagimoto | 0:56c5742b9e2b | 255 | assert(!sym->syms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 256 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 257 | if(datalen > 0) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 258 | sym->datalen = datalen - 1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 259 | if(sym->data_alloc < datalen) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 260 | if(sym->data) |
| RyoheiHagimoto | 0:56c5742b9e2b | 261 | free(sym->data); |
| RyoheiHagimoto | 0:56c5742b9e2b | 262 | sym->data_alloc = datalen; |
| RyoheiHagimoto | 0:56c5742b9e2b | 263 | sym->data = malloc(datalen); |
| RyoheiHagimoto | 0:56c5742b9e2b | 264 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 265 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 266 | else { |
| RyoheiHagimoto | 0:56c5742b9e2b | 267 | if(sym->data) |
| RyoheiHagimoto | 0:56c5742b9e2b | 268 | free(sym->data); |
| RyoheiHagimoto | 0:56c5742b9e2b | 269 | sym->data = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 270 | sym->datalen = sym->data_alloc = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 271 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 272 | return(sym); |
| RyoheiHagimoto | 0:56c5742b9e2b | 273 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 274 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 275 | static inline zbar_symbol_t *cache_lookup (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 276 | zbar_symbol_t *sym) |
| RyoheiHagimoto | 0:56c5742b9e2b | 277 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 278 | /* search for matching entry in cache */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 279 | zbar_symbol_t **entry = &iscn->cache; |
| RyoheiHagimoto | 0:56c5742b9e2b | 280 | while(*entry) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 281 | if((*entry)->type == sym->type && |
| RyoheiHagimoto | 0:56c5742b9e2b | 282 | (*entry)->datalen == sym->datalen && |
| RyoheiHagimoto | 0:56c5742b9e2b | 283 | !memcmp((*entry)->data, sym->data, sym->datalen)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 284 | break; |
| RyoheiHagimoto | 0:56c5742b9e2b | 285 | if((sym->time - (*entry)->time) > CACHE_TIMEOUT) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 286 | /* recycle stale cache entry */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 287 | zbar_symbol_t *next = (*entry)->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 288 | (*entry)->next = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 289 | _zbar_image_scanner_recycle_syms(iscn, *entry); |
| RyoheiHagimoto | 0:56c5742b9e2b | 290 | *entry = next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 291 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 292 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 293 | entry = &(*entry)->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 294 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 295 | return(*entry); |
| RyoheiHagimoto | 0:56c5742b9e2b | 296 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 297 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 298 | static inline void cache_sym (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 299 | zbar_symbol_t *sym) |
| RyoheiHagimoto | 0:56c5742b9e2b | 300 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 301 | if(iscn->enable_cache) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 302 | zbar_symbol_t *entry = cache_lookup(iscn, sym); |
| RyoheiHagimoto | 0:56c5742b9e2b | 303 | if(!entry) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 304 | /* FIXME reuse sym */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 305 | entry = _zbar_image_scanner_alloc_sym(iscn, sym->type, |
| RyoheiHagimoto | 0:56c5742b9e2b | 306 | sym->datalen + 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 307 | memcpy(entry->data, sym->data, sym->datalen); |
| RyoheiHagimoto | 0:56c5742b9e2b | 308 | entry->time = sym->time - CACHE_HYSTERESIS; |
| RyoheiHagimoto | 0:56c5742b9e2b | 309 | entry->cache_count = -CACHE_CONSISTENCY; |
| RyoheiHagimoto | 0:56c5742b9e2b | 310 | /* add to cache */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 311 | entry->next = iscn->cache; |
| RyoheiHagimoto | 0:56c5742b9e2b | 312 | iscn->cache = entry; |
| RyoheiHagimoto | 0:56c5742b9e2b | 313 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 314 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 315 | /* consistency check and hysteresis */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 316 | uint32_t age = sym->time - entry->time; |
| RyoheiHagimoto | 0:56c5742b9e2b | 317 | entry->time = sym->time; |
| RyoheiHagimoto | 0:56c5742b9e2b | 318 | int near_thresh = (age < CACHE_PROXIMITY); |
| RyoheiHagimoto | 0:56c5742b9e2b | 319 | int far_thresh = (age >= CACHE_HYSTERESIS); |
| RyoheiHagimoto | 0:56c5742b9e2b | 320 | int dup = (entry->cache_count >= 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 321 | if((!dup && !near_thresh) || far_thresh) |
| RyoheiHagimoto | 0:56c5742b9e2b | 322 | entry->cache_count = -CACHE_CONSISTENCY; |
| RyoheiHagimoto | 0:56c5742b9e2b | 323 | else if(dup || near_thresh) |
| RyoheiHagimoto | 0:56c5742b9e2b | 324 | entry->cache_count++; |
| RyoheiHagimoto | 0:56c5742b9e2b | 325 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 326 | sym->cache_count = entry->cache_count; |
| RyoheiHagimoto | 0:56c5742b9e2b | 327 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 328 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 329 | sym->cache_count = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 330 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 331 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 332 | void _zbar_image_scanner_add_sym(zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 333 | zbar_symbol_t *sym) |
| RyoheiHagimoto | 0:56c5742b9e2b | 334 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 335 | cache_sym(iscn, sym); |
| RyoheiHagimoto | 0:56c5742b9e2b | 336 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 337 | zbar_symbol_set_t *syms = iscn->syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 338 | if(sym->cache_count || !syms->tail) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 339 | sym->next = syms->head; |
| RyoheiHagimoto | 0:56c5742b9e2b | 340 | syms->head = sym; |
| RyoheiHagimoto | 0:56c5742b9e2b | 341 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 342 | else { |
| RyoheiHagimoto | 0:56c5742b9e2b | 343 | sym->next = syms->tail->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 344 | syms->tail->next = sym; |
| RyoheiHagimoto | 0:56c5742b9e2b | 345 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 346 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 347 | if(!sym->cache_count) |
| RyoheiHagimoto | 0:56c5742b9e2b | 348 | syms->nsyms++; |
| RyoheiHagimoto | 0:56c5742b9e2b | 349 | else if(!syms->tail) |
| RyoheiHagimoto | 0:56c5742b9e2b | 350 | syms->tail = sym; |
| RyoheiHagimoto | 0:56c5742b9e2b | 351 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 352 | _zbar_symbol_refcnt(sym, 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 353 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 354 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 355 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 356 | extern qr_finder_line *_zbar_decoder_get_qr_finder_line(zbar_decoder_t*); |
| RyoheiHagimoto | 0:56c5742b9e2b | 357 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 358 | # define QR_FIXED(v, rnd) ((((v) << 1) + (rnd)) << (QR_FINDER_SUBPREC - 1)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 359 | # define PRINT_FIXED(val, prec) \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 360 | ((val) >> (prec)), \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 361 | (1000 * ((val) & ((1 << (prec)) - 1)) / (1 << (prec))) |
| RyoheiHagimoto | 0:56c5742b9e2b | 362 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 363 | static inline void qr_handler (zbar_image_scanner_t *iscn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 364 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 365 | qr_finder_line *line = _zbar_decoder_get_qr_finder_line(iscn->dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 366 | assert(line); |
| RyoheiHagimoto | 0:56c5742b9e2b | 367 | unsigned u = zbar_scanner_get_edge(iscn->scn, line->pos[0], |
| RyoheiHagimoto | 0:56c5742b9e2b | 368 | QR_FINDER_SUBPREC); |
| RyoheiHagimoto | 0:56c5742b9e2b | 369 | line->boffs = u - zbar_scanner_get_edge(iscn->scn, line->boffs, |
| RyoheiHagimoto | 0:56c5742b9e2b | 370 | QR_FINDER_SUBPREC); |
| RyoheiHagimoto | 0:56c5742b9e2b | 371 | line->len = zbar_scanner_get_edge(iscn->scn, line->len, |
| RyoheiHagimoto | 0:56c5742b9e2b | 372 | QR_FINDER_SUBPREC); |
| RyoheiHagimoto | 0:56c5742b9e2b | 373 | line->eoffs = zbar_scanner_get_edge(iscn->scn, line->eoffs, |
| RyoheiHagimoto | 0:56c5742b9e2b | 374 | QR_FINDER_SUBPREC) - line->len; |
| RyoheiHagimoto | 0:56c5742b9e2b | 375 | line->len -= u; |
| RyoheiHagimoto | 0:56c5742b9e2b | 376 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 377 | u = QR_FIXED(iscn->umin, 0) + iscn->du * u; |
| RyoheiHagimoto | 0:56c5742b9e2b | 378 | if(iscn->du < 0) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 379 | u -= line->len; |
| RyoheiHagimoto | 0:56c5742b9e2b | 380 | int tmp = line->boffs; |
| RyoheiHagimoto | 0:56c5742b9e2b | 381 | line->boffs = line->eoffs; |
| RyoheiHagimoto | 0:56c5742b9e2b | 382 | line->eoffs = tmp; |
| RyoheiHagimoto | 0:56c5742b9e2b | 383 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 384 | int vert = !iscn->dx; |
| RyoheiHagimoto | 0:56c5742b9e2b | 385 | line->pos[vert] = u; |
| RyoheiHagimoto | 0:56c5742b9e2b | 386 | line->pos[!vert] = QR_FIXED(iscn->v, 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 387 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 388 | _zbar_qr_found_line(iscn->qr, vert, line); |
| RyoheiHagimoto | 0:56c5742b9e2b | 389 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 390 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 391 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 392 | static void symbol_handler (zbar_decoder_t *dcode) |
| RyoheiHagimoto | 0:56c5742b9e2b | 393 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 394 | zbar_image_scanner_t *iscn = zbar_decoder_get_userdata(dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 395 | zbar_symbol_type_t type = zbar_decoder_get_type(dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 396 | /* FIXME assert(type == ZBAR_PARTIAL) */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 397 | /* FIXME debug flag to save/display all PARTIALs */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 398 | if(type <= ZBAR_PARTIAL) |
| RyoheiHagimoto | 0:56c5742b9e2b | 399 | return; |
| RyoheiHagimoto | 0:56c5742b9e2b | 400 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 401 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 402 | if(type == ZBAR_QRCODE) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 403 | qr_handler(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 404 | return; |
| RyoheiHagimoto | 0:56c5742b9e2b | 405 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 406 | #else |
| RyoheiHagimoto | 0:56c5742b9e2b | 407 | assert(type != ZBAR_QRCODE); |
| RyoheiHagimoto | 0:56c5742b9e2b | 408 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 409 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 410 | const char *data = zbar_decoder_get_data(dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 411 | unsigned datalen = zbar_decoder_get_data_length(dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 412 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 413 | int x = 0, y = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 414 | if(TEST_CFG(iscn, ZBAR_CFG_POSITION)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 415 | /* tmp position fixup */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 416 | int w = zbar_scanner_get_width(iscn->scn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 417 | int u = iscn->umin + iscn->du * zbar_scanner_get_edge(iscn->scn, w, 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 418 | if(iscn->dx) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 419 | x = u; |
| RyoheiHagimoto | 0:56c5742b9e2b | 420 | y = iscn->v; |
| RyoheiHagimoto | 0:56c5742b9e2b | 421 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 422 | else { |
| RyoheiHagimoto | 0:56c5742b9e2b | 423 | x = iscn->v; |
| RyoheiHagimoto | 0:56c5742b9e2b | 424 | y = u; |
| RyoheiHagimoto | 0:56c5742b9e2b | 425 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 426 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 427 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 428 | /* FIXME need better symbol matching */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 429 | zbar_symbol_t *sym; |
| RyoheiHagimoto | 0:56c5742b9e2b | 430 | for(sym = iscn->syms->head; sym; sym = sym->next) |
| RyoheiHagimoto | 0:56c5742b9e2b | 431 | if(sym->type == type && |
| RyoheiHagimoto | 0:56c5742b9e2b | 432 | sym->datalen == datalen && |
| RyoheiHagimoto | 0:56c5742b9e2b | 433 | !memcmp(sym->data, data, datalen)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 434 | sym->quality++; |
| RyoheiHagimoto | 0:56c5742b9e2b | 435 | if(TEST_CFG(iscn, ZBAR_CFG_POSITION)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 436 | /* add new point to existing set */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 437 | /* FIXME should be polygon */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 438 | sym_add_point(sym, x, y); |
| RyoheiHagimoto | 0:56c5742b9e2b | 439 | return; |
| RyoheiHagimoto | 0:56c5742b9e2b | 440 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 441 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 442 | sym = _zbar_image_scanner_alloc_sym(iscn, type, datalen + 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 443 | /* FIXME grab decoder buffer */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 444 | memcpy(sym->data, data, datalen + 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 445 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 446 | /* initialize first point */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 447 | if(TEST_CFG(iscn, ZBAR_CFG_POSITION)) |
| RyoheiHagimoto | 0:56c5742b9e2b | 448 | sym_add_point(sym, x, y); |
| RyoheiHagimoto | 0:56c5742b9e2b | 449 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 450 | _zbar_image_scanner_add_sym(iscn, sym); |
| RyoheiHagimoto | 0:56c5742b9e2b | 451 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 452 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 453 | zbar_image_scanner_t *zbar_image_scanner_create () |
| RyoheiHagimoto | 0:56c5742b9e2b | 454 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 455 | zbar_image_scanner_t *iscn = calloc(1, sizeof(zbar_image_scanner_t)); |
| RyoheiHagimoto | 0:56c5742b9e2b | 456 | if(!iscn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 457 | return(NULL); |
| RyoheiHagimoto | 0:56c5742b9e2b | 458 | iscn->dcode = zbar_decoder_create(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 459 | iscn->scn = zbar_scanner_create(iscn->dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 460 | if(!iscn->dcode || !iscn->scn) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 461 | zbar_image_scanner_destroy(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 462 | return(NULL); |
| RyoheiHagimoto | 0:56c5742b9e2b | 463 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 464 | zbar_decoder_set_userdata(iscn->dcode, iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 465 | zbar_decoder_set_handler(iscn->dcode, symbol_handler); |
| RyoheiHagimoto | 0:56c5742b9e2b | 466 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 467 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 468 | iscn->qr = _zbar_qr_create(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 469 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 470 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 471 | /* apply default configuration */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 472 | CFG(iscn, ZBAR_CFG_X_DENSITY) = 1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 473 | CFG(iscn, ZBAR_CFG_Y_DENSITY) = 1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 474 | zbar_image_scanner_set_config(iscn, 0, ZBAR_CFG_POSITION, 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 475 | return(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 476 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 477 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 478 | #ifndef NO_STATS |
| RyoheiHagimoto | 0:56c5742b9e2b | 479 | static inline void dump_stats (const zbar_image_scanner_t *iscn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 480 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 481 | zprintf(1, "symbol sets allocated = %-4d\n", iscn->stat_syms_new); |
| RyoheiHagimoto | 0:56c5742b9e2b | 482 | zprintf(1, " scanner syms in use = %-4d\trecycled = %-4d\n", |
| RyoheiHagimoto | 0:56c5742b9e2b | 483 | iscn->stat_iscn_syms_inuse, iscn->stat_iscn_syms_recycle); |
| RyoheiHagimoto | 0:56c5742b9e2b | 484 | zprintf(1, " image syms in use = %-4d\trecycled = %-4d\n", |
| RyoheiHagimoto | 0:56c5742b9e2b | 485 | iscn->stat_img_syms_inuse, iscn->stat_img_syms_recycle); |
| RyoheiHagimoto | 0:56c5742b9e2b | 486 | zprintf(1, "symbols allocated = %-4d\n", iscn->stat_sym_new); |
| RyoheiHagimoto | 0:56c5742b9e2b | 487 | int i; |
| RyoheiHagimoto | 0:56c5742b9e2b | 488 | for(i = 0; i < RECYCLE_BUCKETS; i++) |
| RyoheiHagimoto | 0:56c5742b9e2b | 489 | zprintf(1, " recycled[%d] = %-4d\n", |
| RyoheiHagimoto | 0:56c5742b9e2b | 490 | i, iscn->stat_sym_recycle[i]); |
| RyoheiHagimoto | 0:56c5742b9e2b | 491 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 492 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 493 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 494 | void zbar_image_scanner_destroy (zbar_image_scanner_t *iscn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 495 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 496 | dump_stats(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 497 | if(iscn->syms) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 498 | if(iscn->syms->refcnt) |
| RyoheiHagimoto | 0:56c5742b9e2b | 499 | zbar_symbol_set_ref(iscn->syms, -1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 500 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 501 | _zbar_symbol_set_free(iscn->syms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 502 | iscn->syms = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 503 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 504 | if(iscn->scn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 505 | zbar_scanner_destroy(iscn->scn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 506 | iscn->scn = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 507 | if(iscn->dcode) |
| RyoheiHagimoto | 0:56c5742b9e2b | 508 | zbar_decoder_destroy(iscn->dcode); |
| RyoheiHagimoto | 0:56c5742b9e2b | 509 | iscn->dcode = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 510 | int i; |
| RyoheiHagimoto | 0:56c5742b9e2b | 511 | for(i = 0; i < RECYCLE_BUCKETS; i++) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 512 | zbar_symbol_t *sym, *next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 513 | for(sym = iscn->recycle[i].head; sym; sym = next) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 514 | next = sym->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 515 | _zbar_symbol_free(sym); |
| RyoheiHagimoto | 0:56c5742b9e2b | 516 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 517 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 518 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 519 | if(iscn->qr) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 520 | _zbar_qr_destroy(iscn->qr); |
| RyoheiHagimoto | 0:56c5742b9e2b | 521 | iscn->qr = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 522 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 523 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 524 | free(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 525 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 526 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 527 | zbar_image_data_handler_t* |
| RyoheiHagimoto | 0:56c5742b9e2b | 528 | zbar_image_scanner_set_data_handler (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 529 | zbar_image_data_handler_t *handler, |
| RyoheiHagimoto | 0:56c5742b9e2b | 530 | const void *userdata) |
| RyoheiHagimoto | 0:56c5742b9e2b | 531 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 532 | zbar_image_data_handler_t *result = iscn->handler; |
| RyoheiHagimoto | 0:56c5742b9e2b | 533 | iscn->handler = handler; |
| RyoheiHagimoto | 0:56c5742b9e2b | 534 | iscn->userdata = userdata; |
| RyoheiHagimoto | 0:56c5742b9e2b | 535 | return(result); |
| RyoheiHagimoto | 0:56c5742b9e2b | 536 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 537 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 538 | int zbar_image_scanner_set_config (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 539 | zbar_symbol_type_t sym, |
| RyoheiHagimoto | 0:56c5742b9e2b | 540 | zbar_config_t cfg, |
| RyoheiHagimoto | 0:56c5742b9e2b | 541 | int val) |
| RyoheiHagimoto | 0:56c5742b9e2b | 542 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 543 | if(cfg < ZBAR_CFG_POSITION) |
| RyoheiHagimoto | 0:56c5742b9e2b | 544 | return(zbar_decoder_set_config(iscn->dcode, sym, cfg, val)); |
| RyoheiHagimoto | 0:56c5742b9e2b | 545 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 546 | if(sym > ZBAR_PARTIAL) |
| RyoheiHagimoto | 0:56c5742b9e2b | 547 | return(1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 548 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 549 | if(cfg >= ZBAR_CFG_X_DENSITY && cfg <= ZBAR_CFG_Y_DENSITY) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 550 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 551 | CFG(iscn, cfg) = val; |
| RyoheiHagimoto | 0:56c5742b9e2b | 552 | return(0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 553 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 554 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 555 | if(cfg > ZBAR_CFG_POSITION) |
| RyoheiHagimoto | 0:56c5742b9e2b | 556 | return(1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 557 | cfg -= ZBAR_CFG_POSITION; |
| RyoheiHagimoto | 0:56c5742b9e2b | 558 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 559 | if(!val) |
| RyoheiHagimoto | 0:56c5742b9e2b | 560 | iscn->config &= ~(1 << cfg); |
| RyoheiHagimoto | 0:56c5742b9e2b | 561 | else if(val == 1) |
| RyoheiHagimoto | 0:56c5742b9e2b | 562 | iscn->config |= (1 << cfg); |
| RyoheiHagimoto | 0:56c5742b9e2b | 563 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 564 | return(1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 565 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 566 | return(0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 567 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 568 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 569 | void zbar_image_scanner_enable_cache (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 570 | int enable) |
| RyoheiHagimoto | 0:56c5742b9e2b | 571 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 572 | if(iscn->cache) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 573 | /* recycle all cached syms */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 574 | _zbar_image_scanner_recycle_syms(iscn, iscn->cache); |
| RyoheiHagimoto | 0:56c5742b9e2b | 575 | iscn->cache = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 576 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 577 | iscn->enable_cache = (enable) ? 1 : 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 578 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 579 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 580 | const zbar_symbol_set_t * |
| RyoheiHagimoto | 0:56c5742b9e2b | 581 | zbar_image_scanner_get_results (const zbar_image_scanner_t *iscn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 582 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 583 | return(iscn->syms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 584 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 585 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 586 | static inline void quiet_border (zbar_image_scanner_t *iscn) |
| RyoheiHagimoto | 0:56c5742b9e2b | 587 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 588 | /* flush scanner pipeline */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 589 | zbar_scanner_t *scn = iscn->scn; |
| RyoheiHagimoto | 0:56c5742b9e2b | 590 | zbar_scanner_flush(scn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 591 | zbar_scanner_flush(scn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 592 | zbar_scanner_new_scan(scn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 593 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 594 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 595 | #define movedelta(dx, dy) do { \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 596 | x += (dx); \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 597 | y += (dy); \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 598 | p += (dx) + ((intptr_t)(dy) * w); \ |
| RyoheiHagimoto | 0:56c5742b9e2b | 599 | } while(0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 600 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 601 | int zbar_scan_image (zbar_image_scanner_t *iscn, |
| RyoheiHagimoto | 0:56c5742b9e2b | 602 | zbar_image_t *img) |
| RyoheiHagimoto | 0:56c5742b9e2b | 603 | { |
| RyoheiHagimoto | 0:56c5742b9e2b | 604 | /* timestamp image |
| RyoheiHagimoto | 0:56c5742b9e2b | 605 | * FIXME prefer video timestamp |
| RyoheiHagimoto | 0:56c5742b9e2b | 606 | */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 607 | #if _POSIX_TIMERS > 0 |
| RyoheiHagimoto | 0:56c5742b9e2b | 608 | struct timespec abstime; |
| RyoheiHagimoto | 0:56c5742b9e2b | 609 | clock_gettime(CLOCK_REALTIME, &abstime); |
| RyoheiHagimoto | 0:56c5742b9e2b | 610 | iscn->time = (abstime.tv_sec * 1000) + ((abstime.tv_nsec / 500000) + 1) / 2; |
| RyoheiHagimoto | 0:56c5742b9e2b | 611 | #else |
| RyoheiHagimoto | 0:56c5742b9e2b | 612 | #if (0) // not used |
| RyoheiHagimoto | 0:56c5742b9e2b | 613 | struct timeval abstime; |
| RyoheiHagimoto | 0:56c5742b9e2b | 614 | gettimeofday(&abstime, NULL); |
| RyoheiHagimoto | 0:56c5742b9e2b | 615 | iscn->time = (abstime.tv_sec * 1000) + ((abstime.tv_usec / 500) + 1) / 2; |
| RyoheiHagimoto | 0:56c5742b9e2b | 616 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 617 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 618 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 619 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 620 | _zbar_qr_reset(iscn->qr); |
| RyoheiHagimoto | 0:56c5742b9e2b | 621 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 622 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 623 | /* get grayscale image, convert if necessary */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 624 | if(img->format != fourcc('Y','8','0','0') && |
| RyoheiHagimoto | 0:56c5742b9e2b | 625 | img->format != fourcc('G','R','E','Y')) |
| RyoheiHagimoto | 0:56c5742b9e2b | 626 | return(-1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 627 | iscn->img = img; |
| RyoheiHagimoto | 0:56c5742b9e2b | 628 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 629 | /* recycle previous scanner and image results */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 630 | zbar_image_scanner_recycle_image(iscn, img); |
| RyoheiHagimoto | 0:56c5742b9e2b | 631 | zbar_symbol_set_t *syms = iscn->syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 632 | if(!syms) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 633 | syms = iscn->syms = _zbar_symbol_set_create(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 634 | STAT(syms_new); |
| RyoheiHagimoto | 0:56c5742b9e2b | 635 | zbar_symbol_set_ref(syms, 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 636 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 637 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 638 | zbar_symbol_set_ref(syms, 2); |
| RyoheiHagimoto | 0:56c5742b9e2b | 639 | img->syms = syms; |
| RyoheiHagimoto | 0:56c5742b9e2b | 640 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 641 | unsigned w = img->width; |
| RyoheiHagimoto | 0:56c5742b9e2b | 642 | unsigned h = img->height; |
| RyoheiHagimoto | 0:56c5742b9e2b | 643 | const uint8_t *data = img->data; |
| RyoheiHagimoto | 0:56c5742b9e2b | 644 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 645 | zbar_image_write_png(img, "debug.png"); |
| RyoheiHagimoto | 0:56c5742b9e2b | 646 | svg_open("debug.svg", 0, 0, w, h); |
| RyoheiHagimoto | 0:56c5742b9e2b | 647 | svg_image("debug.png", w, h); |
| RyoheiHagimoto | 0:56c5742b9e2b | 648 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 649 | zbar_scanner_t *scn = iscn->scn; |
| RyoheiHagimoto | 0:56c5742b9e2b | 650 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 651 | int density = CFG(iscn, ZBAR_CFG_Y_DENSITY); |
| RyoheiHagimoto | 0:56c5742b9e2b | 652 | if(density > 0) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 653 | svg_group_start("scanner", 0, 1, 1, 0, 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 654 | const uint8_t *p = data; |
| RyoheiHagimoto | 0:56c5742b9e2b | 655 | int x = 0, y = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 656 | iscn->dy = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 657 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 658 | int border = (((h - 1) % density) + 1) / 2; |
| RyoheiHagimoto | 0:56c5742b9e2b | 659 | if(border > h / 2) |
| RyoheiHagimoto | 0:56c5742b9e2b | 660 | border = h / 2; |
| RyoheiHagimoto | 0:56c5742b9e2b | 661 | movedelta(0, border); |
| RyoheiHagimoto | 0:56c5742b9e2b | 662 | iscn->v = y; |
| RyoheiHagimoto | 0:56c5742b9e2b | 663 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 664 | zbar_scanner_new_scan(scn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 665 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 666 | while(y < h) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 667 | zprintf(128, "img_x+: %04d,%04d @%p\n", x, y, p); |
| RyoheiHagimoto | 0:56c5742b9e2b | 668 | svg_path_start("vedge", 1. / 32, 0, y + 0.5); |
| RyoheiHagimoto | 0:56c5742b9e2b | 669 | iscn->dx = iscn->du = 1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 670 | iscn->umin = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 671 | while(x < w) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 672 | uint8_t d = *p; |
| RyoheiHagimoto | 0:56c5742b9e2b | 673 | movedelta(1, 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 674 | zbar_scan_y(scn, d); |
| RyoheiHagimoto | 0:56c5742b9e2b | 675 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 676 | ASSERT_POS; |
| RyoheiHagimoto | 0:56c5742b9e2b | 677 | quiet_border(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 678 | svg_path_end(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 679 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 680 | movedelta(-1, density); |
| RyoheiHagimoto | 0:56c5742b9e2b | 681 | iscn->v = y; |
| RyoheiHagimoto | 0:56c5742b9e2b | 682 | if(y >= h) |
| RyoheiHagimoto | 0:56c5742b9e2b | 683 | break; |
| RyoheiHagimoto | 0:56c5742b9e2b | 684 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 685 | zprintf(128, "img_x-: %04d,%04d @%p\n", x, y, p); |
| RyoheiHagimoto | 0:56c5742b9e2b | 686 | svg_path_start("vedge", -1. / 32, w, y + 0.5); |
| RyoheiHagimoto | 0:56c5742b9e2b | 687 | iscn->dx = iscn->du = -1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 688 | iscn->umin = w; |
| RyoheiHagimoto | 0:56c5742b9e2b | 689 | while(x >= 0) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 690 | uint8_t d = *p; |
| RyoheiHagimoto | 0:56c5742b9e2b | 691 | movedelta(-1, 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 692 | zbar_scan_y(scn, d); |
| RyoheiHagimoto | 0:56c5742b9e2b | 693 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 694 | ASSERT_POS; |
| RyoheiHagimoto | 0:56c5742b9e2b | 695 | quiet_border(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 696 | svg_path_end(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 697 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 698 | movedelta(1, density); |
| RyoheiHagimoto | 0:56c5742b9e2b | 699 | iscn->v = y; |
| RyoheiHagimoto | 0:56c5742b9e2b | 700 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 701 | svg_group_end(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 702 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 703 | iscn->dx = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 704 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 705 | density = CFG(iscn, ZBAR_CFG_X_DENSITY); |
| RyoheiHagimoto | 0:56c5742b9e2b | 706 | if(density > 0) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 707 | svg_group_start("scanner", 90, 1, -1, 0, 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 708 | const uint8_t *p = data; |
| RyoheiHagimoto | 0:56c5742b9e2b | 709 | int x = 0, y = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 710 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 711 | int border = (((w - 1) % density) + 1) / 2; |
| RyoheiHagimoto | 0:56c5742b9e2b | 712 | if(border > w / 2) |
| RyoheiHagimoto | 0:56c5742b9e2b | 713 | border = w / 2; |
| RyoheiHagimoto | 0:56c5742b9e2b | 714 | movedelta(border, 0); |
| RyoheiHagimoto | 0:56c5742b9e2b | 715 | iscn->v = x; |
| RyoheiHagimoto | 0:56c5742b9e2b | 716 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 717 | while(x < w) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 718 | zprintf(128, "img_y+: %04d,%04d @%p\n", x, y, p); |
| RyoheiHagimoto | 0:56c5742b9e2b | 719 | svg_path_start("vedge", 1. / 32, 0, x + 0.5); |
| RyoheiHagimoto | 0:56c5742b9e2b | 720 | iscn->dy = iscn->du = 1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 721 | iscn->umin = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 722 | while(y < h) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 723 | uint8_t d = *p; |
| RyoheiHagimoto | 0:56c5742b9e2b | 724 | movedelta(0, 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 725 | zbar_scan_y(scn, d); |
| RyoheiHagimoto | 0:56c5742b9e2b | 726 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 727 | ASSERT_POS; |
| RyoheiHagimoto | 0:56c5742b9e2b | 728 | quiet_border(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 729 | svg_path_end(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 730 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 731 | movedelta(density, -1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 732 | iscn->v = x; |
| RyoheiHagimoto | 0:56c5742b9e2b | 733 | if(x >= w) |
| RyoheiHagimoto | 0:56c5742b9e2b | 734 | break; |
| RyoheiHagimoto | 0:56c5742b9e2b | 735 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 736 | zprintf(128, "img_y-: %04d,%04d @%p\n", x, y, p); |
| RyoheiHagimoto | 0:56c5742b9e2b | 737 | svg_path_start("vedge", -1. / 32, h, x + 0.5); |
| RyoheiHagimoto | 0:56c5742b9e2b | 738 | iscn->dy = iscn->du = -1; |
| RyoheiHagimoto | 0:56c5742b9e2b | 739 | iscn->umin = h; |
| RyoheiHagimoto | 0:56c5742b9e2b | 740 | while(y >= 0) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 741 | uint8_t d = *p; |
| RyoheiHagimoto | 0:56c5742b9e2b | 742 | movedelta(0, -1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 743 | zbar_scan_y(scn, d); |
| RyoheiHagimoto | 0:56c5742b9e2b | 744 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 745 | ASSERT_POS; |
| RyoheiHagimoto | 0:56c5742b9e2b | 746 | quiet_border(iscn); |
| RyoheiHagimoto | 0:56c5742b9e2b | 747 | svg_path_end(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 748 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 749 | movedelta(density, 1); |
| RyoheiHagimoto | 0:56c5742b9e2b | 750 | iscn->v = x; |
| RyoheiHagimoto | 0:56c5742b9e2b | 751 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 752 | svg_group_end(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 753 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 754 | iscn->dy = 0; |
| RyoheiHagimoto | 0:56c5742b9e2b | 755 | iscn->img = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 756 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 757 | #ifdef ENABLE_QRCODE |
| RyoheiHagimoto | 0:56c5742b9e2b | 758 | _zbar_qr_decode(iscn->qr, iscn, img); |
| RyoheiHagimoto | 0:56c5742b9e2b | 759 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 760 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 761 | /* FIXME tmp hack to filter bad EAN results */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 762 | if(syms->nsyms && !iscn->enable_cache && |
| RyoheiHagimoto | 0:56c5742b9e2b | 763 | (density == 1 || CFG(iscn, ZBAR_CFG_Y_DENSITY) == 1)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 764 | zbar_symbol_t **symp = &syms->head, *sym; |
| RyoheiHagimoto | 0:56c5742b9e2b | 765 | while((sym = *symp)) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 766 | if(sym->type < ZBAR_I25 && sym->type > ZBAR_PARTIAL && |
| RyoheiHagimoto | 0:56c5742b9e2b | 767 | sym->quality < 3) { |
| RyoheiHagimoto | 0:56c5742b9e2b | 768 | /* recycle */ |
| RyoheiHagimoto | 0:56c5742b9e2b | 769 | *symp = sym->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 770 | syms->nsyms--; |
| RyoheiHagimoto | 0:56c5742b9e2b | 771 | sym->next = NULL; |
| RyoheiHagimoto | 0:56c5742b9e2b | 772 | _zbar_image_scanner_recycle_syms(iscn, sym); |
| RyoheiHagimoto | 0:56c5742b9e2b | 773 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 774 | else |
| RyoheiHagimoto | 0:56c5742b9e2b | 775 | symp = &sym->next; |
| RyoheiHagimoto | 0:56c5742b9e2b | 776 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 777 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 778 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 779 | if(syms->nsyms && iscn->handler) |
| RyoheiHagimoto | 0:56c5742b9e2b | 780 | iscn->handler(img, iscn->userdata); |
| RyoheiHagimoto | 0:56c5742b9e2b | 781 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 782 | svg_close(); |
| RyoheiHagimoto | 0:56c5742b9e2b | 783 | return(syms->nsyms); |
| RyoheiHagimoto | 0:56c5742b9e2b | 784 | } |
| RyoheiHagimoto | 0:56c5742b9e2b | 785 | |
| RyoheiHagimoto | 0:56c5742b9e2b | 786 | #ifdef DEBUG_SVG |
| RyoheiHagimoto | 0:56c5742b9e2b | 787 | /* FIXME lame...*/ |
| RyoheiHagimoto | 0:56c5742b9e2b | 788 | # include "svg.c" |
| RyoheiHagimoto | 0:56c5742b9e2b | 789 | #endif |
| RyoheiHagimoto | 0:56c5742b9e2b | 790 |