src/core/scanimagerunner.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2022 Friedrich W. H. Kossebau <kossebau@kde.org>
0003
0004     SPDX-License-Identifier: LGPL-2.1-or-later
0005 */
0006
0007 #include "scanimagerunner.hpp"
0008
0009 // own
0010 #include "scanresult.hpp"
0011 #include "scanresult_p.hpp"
0012 // ZXing
0013 #include <ZXing/ReadBarcode.h>
0014
0015 namespace Kodaskanna
0016 {
0017
0018 ScanImageRunner::ScanImageRunner(const QImage &image)
0019     : m_image(image)
0020 {
0021 }
0022
0023 ZXing::ImageFormat zxingImageFormatFromQImage(const QImage &image)
0024 {
0025     switch (image.format()) {
0026     case QImage::Format_ARGB32:
0027     case QImage::Format_RGB32:
0028 #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
0029         return ZXing::ImageFormat::BGRX;
0030 #else
0031         return ZXing::ImageFormat::XRGB;
0032 #endif
0033     case QImage::Format_RGB888:
0034         return ZXing::ImageFormat::RGB;
0035     case QImage::Format_RGBX8888:
0036     case QImage::Format_RGBA8888:
0037         return ZXing::ImageFormat::RGBX;
0038     case QImage::Format_Grayscale8:
0039         return ZXing::ImageFormat::Lum;
0040     default:
0041         return ZXing::ImageFormat::None;
0042     }
0043 }
0044
0045 ZXing::Result readBarcode(const QImage &image, ZXing::DecodeHints decodeHints)
0046 {
0047     return ZXing::ReadBarcode({image.bits(), image.width(), image.height(), zxingImageFormatFromQImage(image), static_cast<int>(image.bytesPerLine())}, decodeHints);
0048 }
0049
0050 void ScanImageRunner::run()
0051 {
0052     ZXing::DecodeHints decodeHints;
0053     decodeHints.setFormats(ZXing::BarcodeFormat::Any);
0054     decodeHints.setTryRotate(false);
0055     decodeHints.setBinarizer(ZXing::Binarizer::FixedThreshold);
0056
0057     const bool isSupportedQImageFormat = (zxingImageFormatFromQImage(m_image) == ZXing::ImageFormat::None);
0058     ZXing::Result result =
0059         isSupportedQImageFormat ? readBarcode(m_image.convertToFormat(QImage::Format_RGBX8888), decodeHints) : readBarcode(m_image, decodeHints);
0060
0061     auto *resultData = new ScanResultPrivate;
0062     ScanResult scanResult(resultData);
0063
0064     resultData->isSuccess = result.isValid();
0065     if (resultData->isSuccess) {
0066         resultData->text = QString::fromStdWString(result.text());
0067         resultData->bytes = QByteArray(reinterpret_cast<const char *>(result.rawBytes().data()), result.rawBytes().size());
0068     }
0069
0070     Q_EMIT scanFinished(scanResult);
0071 }
0072
0073 }