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/*
* Copyright 2020 Axel Waggershauser
*/
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "ReadBarcode.h"
#include <opencv2/opencv.hpp>
inline ZXing::ImageView ImageViewFromMat(const cv::Mat& image)
{
using ZXing::ImageFormat;
auto fmt = ImageFormat::None;
switch (image.channels()) {
case 1: fmt = ImageFormat::Lum; break;
case 2: fmt = ImageFormat::LumA; break;
case 3: fmt = ImageFormat::BGR; break;
case 4: fmt = ImageFormat::BGRA; break;
}
if (image.depth() != CV_8U || fmt == ImageFormat::None)
return {nullptr, 0, 0, ImageFormat::None};
return {image.data, image.cols, image.rows, fmt};
}
inline ZXing::Barcodes ReadBarcodes(const cv::Mat& image, const ZXing::ReaderOptions& options = {})
{
return ZXing::ReadBarcodes(ImageViewFromMat(image), options);
}
inline void DrawBarcode(cv::Mat& img, ZXing::Barcode barcode)
{
auto pos = barcode.position();
auto zx2cv = [](ZXing::PointI p) { return cv::Point(p.x, p.y); };
auto contour = std::vector<cv::Point>{zx2cv(pos[0]), zx2cv(pos[1]), zx2cv(pos[2]), zx2cv(pos[3])};
const auto* pts = contour.data();
int npts = contour.size();
cv::polylines(img, &pts, &npts, 1, true, CV_RGB(0, 255, 0));
cv::putText(img, barcode.text(), zx2cv(pos[3]) + cv::Point(0, 20), cv::FONT_HERSHEY_DUPLEX, 0.5, CV_RGB(0, 255, 0));
}
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