79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
#ifndef _SYMBOL_H_
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#define _SYMBOL_H_
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#include <stdlib.h>
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#include <zbar.h>
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#include "refcnt.h"
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#include "cm_mem.h"
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#define NUM_SYMS 20
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typedef struct point_s {
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int x, y;
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} point_t;
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struct zbar_symbol_set_s {
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refcnt_t refcnt;
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int nsyms; /* number of filtered symbols */
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zbar_symbol_t *head; /* first of decoded symbol results */
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zbar_symbol_t *tail; /* last of unfiltered symbol results */
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};
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struct zbar_symbol_s {
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zbar_symbol_type_t type; /* symbol type */
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unsigned int configs; /* symbology boolean config bitmask */
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unsigned int modifiers; /* symbology modifier bitmask */
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unsigned int data_alloc; /* allocation size of data */
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unsigned int datalen; /* length of binary symbol data */
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char *data; /* symbol data */
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unsigned pts_alloc; /* allocation size of pts */
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unsigned npts; /* number of points in location polygon */
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point_t *pts; /* list of points in location polygon */
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zbar_orientation_t orient; /* coarse orientation */
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refcnt_t refcnt; /* reference count */
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zbar_symbol_t *next; /* linked list of results (or siblings) */
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zbar_symbol_set_t *syms; /* components of composite result */
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unsigned long time; /* relative symbol capture time */
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int cache_count; /* cache state */
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int quality; /* relative symbol reliability metric */
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};
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extern int _zbar_get_symbol_hash(zbar_symbol_type_t);
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extern void _zbar_symbol_free(zbar_symbol_t*);
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extern zbar_symbol_set_t *_zbar_symbol_set_create(void);
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extern void _zbar_symbol_set_free(zbar_symbol_set_t*);
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static __inline void sym_add_point (zbar_symbol_t *sym,
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int x,
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int y)
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{
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int i = sym->npts;
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if(++sym->npts >= sym->pts_alloc)
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sym->pts = cm_realloc(sym->pts, ++sym->pts_alloc * sizeof(point_t));
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sym->pts[i].x = x;
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sym->pts[i].y = y;
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}
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static __inline void _zbar_symbol_refcnt (zbar_symbol_t *sym,
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int delta)
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{
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if(!_zbar_refcnt(&sym->refcnt, delta) && delta <= 0)
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_zbar_symbol_free(sym);
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}
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static __inline void _zbar_symbol_set_add (zbar_symbol_set_t *syms,
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zbar_symbol_t *sym)
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{
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sym->next = syms->head;
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syms->head = sym;
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syms->nsyms++;
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_zbar_symbol_refcnt(sym, 1);
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}
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#endif
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