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Diffstat (limited to 'zbar/symbol.h')
| -rw-r--r-- | zbar/symbol.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/zbar/symbol.h b/zbar/symbol.h new file mode 100644 index 0000000..5ea97a3 --- /dev/null +++ b/zbar/symbol.h @@ -0,0 +1,96 @@ +/*------------------------------------------------------------------------ + * Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net> + * + * This file is part of the ZBar Bar Code Reader. + * + * The ZBar Bar Code Reader is free software; you can redistribute it + * and/or modify it under the terms of the GNU Lesser Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * The ZBar Bar Code Reader 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 Public License for more details. + * + * You should have received a copy of the GNU Lesser Public License + * along with the ZBar Bar Code Reader; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301 USA + * + * http://sourceforge.net/projects/zbar + *------------------------------------------------------------------------*/ +#ifndef _SYMBOL_H_ +#define _SYMBOL_H_ + +#include <stdlib.h> +#include <zbar.h> +#include "refcnt.h" + +#define NUM_SYMS 20 + +typedef struct point_s { + int x, y; +} point_t; + +struct zbar_symbol_set_s { + refcnt_t refcnt; + int nsyms; /* number of filtered symbols */ + zbar_symbol_t *head; /* first of decoded symbol results */ + zbar_symbol_t *tail; /* last of unfiltered symbol results */ +}; + +struct zbar_symbol_s { + zbar_symbol_type_t type; /* symbol type */ + unsigned int configs; /* symbology boolean config bitmask */ + unsigned int modifiers; /* symbology modifier bitmask */ + unsigned int data_alloc; /* allocation size of data */ + unsigned int datalen; /* length of binary symbol data */ + char *data; /* symbol data */ + + unsigned pts_alloc; /* allocation size of pts */ + unsigned npts; /* number of points in location polygon */ + point_t *pts; /* list of points in location polygon */ + zbar_orientation_t orient; /* coarse orientation */ + + refcnt_t refcnt; /* reference count */ + zbar_symbol_t *next; /* linked list of results (or siblings) */ + zbar_symbol_set_t *syms; /* components of composite result */ + unsigned long time; /* relative symbol capture time */ + int cache_count; /* cache state */ + int quality; /* relative symbol reliability metric */ +}; + +extern int _zbar_get_symbol_hash(zbar_symbol_type_t); + +extern void _zbar_symbol_free(zbar_symbol_t *); + +extern zbar_symbol_set_t *_zbar_symbol_set_create(void); +extern void _zbar_symbol_set_free(zbar_symbol_set_t *); + +static inline void sym_add_point(zbar_symbol_t *sym, int x, int y) +{ + int i = sym->npts; + if (++sym->npts >= sym->pts_alloc) + sym->pts = realloc(sym->pts, ++sym->pts_alloc * sizeof(point_t)); + sym->pts[i].x = x; + sym->pts[i].y = y; +} + +static inline void _zbar_symbol_refcnt(zbar_symbol_t *sym, int delta) +{ + if (!_zbar_refcnt(&sym->refcnt, delta) && delta <= 0) + _zbar_symbol_free(sym); +} + +static inline void _zbar_symbol_set_add(zbar_symbol_set_t *syms, + zbar_symbol_t *sym) +{ + sym->next = syms->head; + syms->head = sym; + syms->nsyms++; + + _zbar_symbol_refcnt(sym, 1); +} + +#endif |