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/*------------------------------------------------------------------------
* 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
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