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/******************************************************************************
* Copyright (C) 2018 Alejandro Colomar Andrés *
* SPDX-License-Identifier: GPL-2.0-only *
******************************************************************************/
/******************************************************************************
******* headers **************************************************************
******************************************************************************/
#include "vision-artificial/image/zbar.hpp"
#include <climits>
#include <cstddef>
#include <cstdio>
#include <opencv2/opencv.hpp>
#include <zbar.h>
#include "vision-artificial/image/iface.hpp"
/******************************************************************************
******* macros ***************************************************************
******************************************************************************/
/******************************************************************************
******* enums ****************************************************************
******************************************************************************/
/******************************************************************************
******* structs / unions *****************************************************
******************************************************************************/
/******************************************************************************
******* variables ************************************************************
******************************************************************************/
/******************************************************************************
******* static functions (prototypes) ****************************************
******************************************************************************/
static void img_zb_decode (class cv::Mat *imgptr, const void *data);
/******************************************************************************
******* global functions *****************************************************
******************************************************************************/
void img_zb_act (class cv::Mat *imgptr, int action, const void *data)
{
switch (action) {
case IMG_ZB_ACT_DECODE:
img_zb_decode(imgptr, data);
break;
}
}
/******************************************************************************
******* static functions (definitions) ***************************************
******************************************************************************/
static void img_zb_decode (class cv::Mat *imgptr, const void *data)
{
const struct zbar::zbar_symbol_s *symbol;
struct zbar::zbar_image_scanner_s *scanner;
struct zbar::zbar_image_s *image_zb;
enum zbar::zbar_symbol_type_e code_type;
void *imgdata;
ptrdiff_t rows;
ptrdiff_t cols;
imgdata = (void *)imgptr->data;
rows = imgptr->rows;
cols = imgptr->cols;
/* Type of code to scan */
code_type = (enum zbar::zbar_symbol_type_e)
((const struct Img_Iface_Data_Decode *)data)->code_type;
/* create & configure a reader */
scanner = zbar::zbar_image_scanner_create();
zbar::zbar_image_scanner_set_config(scanner, code_type,
zbar::ZBAR_CFG_ENABLE, 1);
/* wrap image data */
image_zb = zbar::zbar_image_create();
zbar::zbar_image_set_format(image_zb, *(int*)"GREY");
zbar::zbar_image_set_size(image_zb, cols, rows);
zbar::zbar_image_set_data(image_zb, imgdata, cols * rows, NULL);
/* scan the image for barcodes */
zb_codes.n = zbar::zbar_scan_image(scanner, image_zb);
if (!zb_codes.n)
goto not_found;
/* extract results */
symbol = zbar::zbar_image_first_symbol(image_zb);
for (ptrdiff_t i = 0; i < ZB_CODES_MAX && symbol; i++) {
zb_codes.arr[i].type = zbar::zbar_symbol_get_type(symbol);
code_type = (enum zbar::zbar_symbol_type_e)zb_codes.arr[i].type;
snprintf(zb_codes.arr[i].sym_name, 80, "%s",
zbar::zbar_get_symbol_name(code_type));
snprintf(zb_codes.arr[i].data, ZBAR_LEN_MAX, "%s",
zbar::zbar_symbol_get_data(symbol));
/* Load next symbol */
symbol = zbar::zbar_symbol_next(symbol);
}
not_found:
/* clean up */
zbar::zbar_image_destroy(image_zb);
zbar::zbar_image_scanner_destroy(scanner);
}
/******************************************************************************
******* end of file **********************************************************
******************************************************************************/
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