inline void zbar_image_scanner_recycle_image (zbar_image_scanner_t *iscn,
zbar_image_t *img)
{
zbar_symbol_set_t *syms = iscn->syms;
if(syms && syms->refcnt) {
if(recycle_syms(iscn, syms)) {
STAT(iscn_syms_inuse);
iscn->syms = NULL;
}
else
STAT(iscn_syms_recycle);
}
syms = img->syms;
img->syms = NULL;
if(syms && recycle_syms(iscn, syms)) {
STAT(img_syms_inuse);
syms = iscn->syms;
}
else if(syms) {
STAT(img_syms_recycle);
/* select one set to resurrect, destroy the other */
if(iscn->syms) {
_zbar_symbol_set_free(syms);
syms = iscn->syms;
}
else
iscn->syms = syms;
}
}
int zebra_scan_image (zebra_image_scanner_t *iscn,
zebra_image_t *img)
{
recycle_syms(iscn, img);
/* get grayscale image, convert if necessary */
/*img = zebra_image_convert(img, fourcc('Y','8','0','0'));*/
if(!img)
return(-1);
unsigned w = zebra_image_get_width(img);
unsigned h = zebra_image_get_height(img);
const uint8_t *data = zebra_image_get_data(img);
const uint8_t *p = data;
int x = 0, y = 0;
#ifdef DEBUG_IMG_SCANNER
movedelta(0, (h + 1) / 2);
#else
movedelta(0, 8);
#endif
if(zebra_scanner_new_scan(iscn->scn))
symbol_handler(iscn, x, y);
/* FIXME add density config api */
/* FIXME less arbitrary lead-out default */
int quiet = w / 32;
if(quiet < 8)
quiet = 8;
while(y < h) {
zprintf(32, "img_x+: %03x,%03x @%p\n", x, y, p);
while(x < w) {
ASSERT_POS;
if(zebra_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(1, 0);
}
quiet_border(iscn, quiet, x, y);
movedelta(-1, 16);
if(y >= h)
break;
zprintf(32, "img_x-: %03x,%03x @%p\n", x, y, p);
while(x > 0) {
ASSERT_POS;
if(zebra_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(-1, 0);
}
quiet_border(iscn, quiet, x, y);
movedelta(1, 16);
#ifdef DEBUG_IMG_SCANNER
break;
#endif
}
#ifndef DEBUG_IMG_SCANNER
x = y = 0;
p = data;
movedelta(8, 0);
while(x < w) {
zprintf(32, "img_y+: %03x,%03x @%p\n", x, y, p);
while(y < h) {
ASSERT_POS;
if(zebra_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(0, 1);
}
quiet_border(iscn, quiet, x, y);
movedelta(16, -1);
if(x >= w)
break;
zprintf(32, "img_y-: %03x,%03x @%p\n", x, y, p);
while(y >= 0) {
ASSERT_POS;
if(zebra_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(0, -1);
}
quiet_border(iscn, quiet, x, y);
movedelta(16, 1);
}
#endif
/* flush scanner pipe */
if(zebra_scanner_new_scan(iscn->scn))
symbol_handler(iscn, x, y);
/* release reference */
zebra_image_destroy(img);
return(iscn->img->nsyms);
}
int zbar_scan_image (zbar_image_scanner_t *iscn,
zbar_image_t *img)
{
recycle_syms(iscn, img);
/* get grayscale image, convert if necessary */
img = zbar_image_convert(img, fourcc('Y','8','0','0'));
if(!img)
return(-1);
unsigned w = zbar_image_get_width(img);
unsigned h = zbar_image_get_height(img);
const uint8_t *data = zbar_image_get_data(img);
/* FIXME less arbitrary lead-out default */
int quiet = w / 32;
if(quiet < 8)
quiet = 8;
int density = CFG(iscn, ZBAR_CFG_Y_DENSITY);
if(density > 0) {
const uint8_t *p = data;
int x = 0, y = 0;
int border = (((h - 1) % density) + 1) / 2;
if(border > h / 2)
border = h / 2;
movedelta(0, border);
if(zbar_scanner_new_scan(iscn->scn))
symbol_handler(iscn, x, y);
while(y < h) {
zprintf(32, "img_x+: %03x,%03x @%p\n", x, y, p);
while(x < w) {
ASSERT_POS;
if(zbar_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(1, 0);
}
quiet_border(iscn, quiet, x, y);
movedelta(-1, density);
if(y >= h)
break;
zprintf(32, "img_x-: %03x,%03x @%p\n", x, y, p);
while(x > 0) {
ASSERT_POS;
if(zbar_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(-1, 0);
}
quiet_border(iscn, quiet, x, y);
movedelta(1, density);
}
}
density = CFG(iscn, ZBAR_CFG_X_DENSITY);
if(density > 0) {
const uint8_t *p = data;
int x = 0, y = 0;
int border = (((w - 1) % density) + 1) / 2;
if(border > w / 2)
border = w / 2;
movedelta(border, 0);
while(x < w) {
zprintf(32, "img_y+: %03x,%03x @%p\n", x, y, p);
while(y < h) {
ASSERT_POS;
if(zbar_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(0, 1);
}
quiet_border(iscn, quiet, x, y);
movedelta(density, -1);
if(x >= w)
break;
zprintf(32, "img_y-: %03x,%03x @%p\n", x, y, p);
while(y >= 0) {
ASSERT_POS;
if(zbar_scan_y(iscn->scn, *p))
symbol_handler(iscn, x, y);
movedelta(0, -1);
}
quiet_border(iscn, quiet, x, y);
movedelta(density, 1);
}
}
/* release reference to converted image */
zbar_image_destroy(img);
return(iscn->img->nsyms);
}
