123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
#ifndef _IMAGE_H_
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#define _IMAGE_H_
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//lianghai debug
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//#include "unistd.h"
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#include <zbar_config.h>
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#include <zbar_utils.h>
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#ifdef HAVE_INTTYPES_H
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# include <inttypes.h>
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#endif
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#include <stdlib.h>
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#include <assert.h>
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#include <zbar.h>
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#include "error.h"
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#include "symbol.h"
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#include "refcnt.h"
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#define fourcc zbar_fourcc
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/* unpack size/location of component */
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#define RGB_SIZE(c) ((c) >> 5)
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#define RGB_OFFSET(c) ((c) & 0x1f)
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/* coarse image format categorization.
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* to limit conversion variations
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*/
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typedef enum zbar_format_group_e {
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ZBAR_FMT_GRAY,
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ZBAR_FMT_YUV_PLANAR,
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ZBAR_FMT_YUV_PACKED,
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ZBAR_FMT_RGB_PACKED,
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ZBAR_FMT_YUV_NV,
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ZBAR_FMT_JPEG,
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/* enum size */
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ZBAR_FMT_NUM
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} zbar_format_group_t;
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struct zbar_image_s {
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uint32_t format; /* fourcc image format code */
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unsigned width, height; /* image size */
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const void *data; /* image sample data */
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unsigned long datalen; /* allocated/mapped size of data */
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unsigned crop_x, crop_y; /* crop rectangle */
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unsigned crop_w, crop_h;
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void *userdata; /* user specified data associated w/image */
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/* cleanup handler */
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zbar_image_cleanup_handler_t *cleanup;
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refcnt_t refcnt; /* reference count */
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zbar_video_t *src; /* originator */
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int srcidx; /* index used by originator */
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zbar_image_t *next; /* internal image lists */
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unsigned seq; /* page/frame sequence number */
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zbar_symbol_set_t *syms; /* decoded result set */
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};
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/* description of an image format */
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typedef struct zbar_format_def_s {
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uint32_t format; /* fourcc */
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zbar_format_group_t group; /* coarse categorization */
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union {
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uint8_t gen[4]; /* raw bytes */
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struct {
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uint8_t bpp; /* bits per pixel */
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uint8_t red, green, blue; /* size/location a la RGB_BITS() */
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} rgb;
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struct {
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uint8_t xsub2, ysub2; /* chroma subsampling in each axis */
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uint8_t packorder; /* channel ordering flags
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* bit0: 0=UV, 1=VU
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* bit1: 0=Y/chroma, 1=chroma/Y
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*/
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} yuv;
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uint32_t cmp; /* quick compare equivalent formats */
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} p;
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} zbar_format_def_t;
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extern int _zbar_best_format(uint32_t, uint32_t*, const uint32_t*);
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extern const zbar_format_def_t *_zbar_format_lookup(uint32_t);
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extern void _zbar_image_free(zbar_image_t*);
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#ifdef DEBUG_SVG
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extern int zbar_image_write_png(const zbar_image_t*, const char*);
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#else
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# define zbar_image_write_png(...)
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#endif
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static __inline void _zbar_image_refcnt (zbar_image_t *img,
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int delta)
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{
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if(!_zbar_refcnt(&img->refcnt, delta) && delta <= 0) {
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if(img->cleanup)
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img->cleanup(img);
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if(!img->src)
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_zbar_image_free(img);
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}
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}
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static __inline void _zbar_image_swap_symbols (zbar_image_t *a,
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zbar_image_t *b)
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{
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zbar_symbol_set_t *tmp = a->syms;
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a->syms = b->syms;
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b->syms = tmp;
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}
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static __inline void _zbar_image_copy_size (zbar_image_t *dst,
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const zbar_image_t *src)
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{
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dst->width = src->width;
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dst->height = src->height;
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dst->crop_x = src->crop_x;
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dst->crop_y = src->crop_y;
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dst->crop_w = src->crop_w;
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dst->crop_h = src->crop_h;
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}
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#endif
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