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‎.gitignore

+2
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.DS_Store
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‎CMakeLists.txt

+124
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qt6_add_qml_module(ocvdecoder
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URI ocvdecoder.decoder
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VERSION 1.0
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SOURCES
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ocvdecoder.h ocvdecoder.cpp
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)
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target_link_libraries(ocvdecoder
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PRIVATE Qt6::Quick Qt6::Multimedia
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-static-openmp -fopenmp
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)
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target_include_directories(ocvdecoder PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/opencv/include/)
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target_link_libraries(ocvdecoder PUBLIC Qt::CorePrivate)
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message(PROJECT_SOURCE_DIR=${ANDROID_ABI})
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if(IOS)
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target_link_libraries(ocvdecoder PRIVATE
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_hfs.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_rgbd.a
25+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_aruco.a
26+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_highgui.a
27+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_saliency.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_bgsegm.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_img_hash.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_shape.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_bioinspired.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_imgcodecs.a
33+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_structured_light.a
34+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_calib3d.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_imgproc.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_surface_matching.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_ccalib.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_intensity_transform.a
39+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_tracking.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_core.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_line_descriptor.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_video.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_dnn.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_mcc.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_videoio.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_dnn_objdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_objdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_videostab.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_dnn_superres.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_optflow.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_wechat_qrcode.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_dpm.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_phase_unwrapping.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_xfeatures2d.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_face.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_photo.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_ximgproc.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_xobjdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_xphoto.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_features2d.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_plot.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_xobjdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_xphoto.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_flann.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_rapid.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_fuzzy.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libopencv_reg.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/ios/libquirc.a
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)
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endif()
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if (ANDROID)
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target_link_libraries(ocvdecoder PRIVATE
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_hfs.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_rgbd.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_aruco.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_highgui.a
80+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_saliency.a
81+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_bgsegm.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_img_hash.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_shape.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_bioinspired.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_imgcodecs.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_structured_light.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_calib3d.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_imgproc.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_surface_matching.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_ccalib.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_intensity_transform.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_tracking.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_core.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_line_descriptor.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_video.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_dnn.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_mcc.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_videoio.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_dnn_objdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_objdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_videostab.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_dnn_superres.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_optflow.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_wechat_qrcode.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_dpm.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_phase_unwrapping.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_xfeatures2d.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_face.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_photo.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_ximgproc.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_xobjdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_xphoto.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_features2d.a
114+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_plot.a
115+
${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_xobjdetect.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_xphoto.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_flann.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_rapid.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_fuzzy.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libopencv_reg.a
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${CMAKE_CURRENT_SOURCE_DIR}/opencv/android/arm64-v8a/libquirc.a
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)
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endif()

‎ocvdecoder.cpp

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#include "ocvdecoder.h"
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#include <opencv2/opencv.hpp>
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#include <QUrl>
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#include <QtConcurrent/QtConcurrent>
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using namespace std;
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OCVDecoder::OCVDecoder(QObject *parent): QObject(parent)
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{
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m_detector = makePtr<wechat_qrcode::WeChatQRCode>("", "", "", "");
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}
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void OCVDecoder::setFrame(const QVideoFrame &frame)
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{
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if(!isDecoding() && m_processThread.isFinished()) {
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m_decoding = true;
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QImage image = frame.toImage().convertToFormat(QImage::Format_RGB32).rgbSwapped();
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m_processThread = QtConcurrent::run([=]() {
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if(image.isNull()) {
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m_decoding = false;
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return;
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}
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cv::Mat img(image.height(), image.width(), CV_8UC4, (void *) image.bits(), image.bytesPerLine());
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vector<Mat> points;
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auto res = m_detector->detectAndDecode(img, points);
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if (res.size() > 0) {
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for (const auto& value : res) {
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qDebug() << " opencv " << QString(value.c_str());
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emit decoded(QString(value.c_str()));
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}
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}
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m_decoding = false;
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});
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}
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}
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void OCVDecoder::setVideoSink(QObject *videoSync)
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{
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m_videoSink = qobject_cast<QVideoSink*>(videoSync);
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if (m_videoSink) {
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QObject::connect(m_videoSink, &QVideoSink::videoFrameChanged,
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this, &OCVDecoder::setFrame);
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}
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}
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// https://asmaloney.com/2013/11/code/converting-between-cvmat-and-qimage-or-qpixmap/
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static cv::Mat QImageToCvMat(QImage inImage, bool inCloneImageData = true)
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{
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switch ( inImage.format() )
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{
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// 8-bit, 4 channel
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case QImage::Format_ARGB32:
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case QImage::Format_ARGB32_Premultiplied:
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{
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cv::Mat mat( inImage.height(), inImage.width(),
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CV_8UC4,
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const_cast<uchar*>(inImage.bits()),
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static_cast<size_t>(inImage.bytesPerLine())
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);
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return (inCloneImageData ? mat.clone() : mat);
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}
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// 8-bit, 3 channel
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case QImage::Format_RGB32:
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{
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if ( !inCloneImageData ) {
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qWarning() << "QImageToCvMat() - Conversion requires cloning so we don't modify the original QImage data";
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}
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cv::Mat mat( inImage.height(), inImage.width(),
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CV_8UC4,
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const_cast<uchar*>(inImage.bits()),
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static_cast<size_t>(inImage.bytesPerLine())
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);
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cv::Mat matNoAlpha;
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cv::cvtColor( mat, matNoAlpha, cv::COLOR_BGRA2BGR ); // drop the all-white alpha channel
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return matNoAlpha;
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}
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// 8-bit, 3 channel
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case QImage::Format_RGB888:
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{
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if ( !inCloneImageData ) {
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qWarning() << "QImageToCvMat() - Conversion requires cloning so we don't modify the original QImage data";
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}
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QImage swapped = inImage.rgbSwapped();
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cv::Mat mat( swapped.height(), swapped.width(),
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CV_8UC3,
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const_cast<uchar*>(swapped.bits()),
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static_cast<size_t>(swapped.bytesPerLine())
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);
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return (inCloneImageData ? mat.clone() : mat);
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}
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// 8-bit, 1 channel
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case QImage::Format_Grayscale8:
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case QImage::Format_Indexed8:
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{
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cv::Mat mat( inImage.height(), inImage.width(),
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CV_8UC1,
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const_cast<uchar*>(inImage.bits()),
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static_cast<size_t>(inImage.bytesPerLine())
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);
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return (inCloneImageData ? mat.clone() : mat);
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}
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#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
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case QImage::Format_Grayscale16:
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{
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cv::Mat mat(cv::Size(inImage.width(),inImage.height()),CV_16U,const_cast<uchar*>(inImage.bits()),cv::Mat::AUTO_STEP);
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return (inCloneImageData ? mat.clone() : mat);
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}
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#endif
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default:
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qWarning() << "QImageToCvMat() - QImage format not handled in switch:" << inImage.format();
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break;
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}
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return cv::Mat();
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}

‎ocvdecoder.h

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#ifndef OCVDECODER_H
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#define OCVDECODER_H
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#include <QObject>
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#include <QtMultimedia/QVideoSink>
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#include <QtMultimedia/QVideoFrame>
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#include "opencv2/wechat_qrcode.hpp"
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#include <qqml.h>
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#include <QFuture>
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using namespace cv;
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class OCVDecoder: public QObject
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{
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Q_OBJECT
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QML_ELEMENT
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Q_PROPERTY(QObject* videoSink WRITE setVideoSink)
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public:
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OCVDecoder(QObject *parent = nullptr);
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void setVideoSink(QObject *videoSink);
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bool isDecoding() {return m_decoding; }
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public slots:
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void setFrame(const QVideoFrame &frame);
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signals:
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void videoSyncChnaged();
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void decoded(const QString &qr);
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private:
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QVideoSink *m_videoSink;
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Ptr<wechat_qrcode::WeChatQRCode> m_detector;
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QFuture<void> m_processThread;
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bool m_decoding;
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};
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#endif // OCVDECODER_H

‎opencv/android/arm64-v8a/libopencv_aruco.a

56.2 KB
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‎opencv/android/arm64-v8a/libopencv_bgsegm.a

205 KB
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‎opencv/android/arm64-v8a/libopencv_bioinspired.a

381 KB
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‎opencv/android/arm64-v8a/libopencv_calib3d.a

3.38 MB
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‎opencv/android/arm64-v8a/libopencv_ccalib.a

425 KB
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‎opencv/android/arm64-v8a/libopencv_core.a

4.99 MB
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‎opencv/android/arm64-v8a/libopencv_dnn.a

7.02 MB
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‎opencv/android/arm64-v8a/libopencv_dnn_objdetect.a

32.7 KB
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‎opencv/android/arm64-v8a/libopencv_dnn_superres.a

84.3 KB
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‎opencv/android/arm64-v8a/libopencv_dpm.a

140 KB
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‎opencv/android/arm64-v8a/libopencv_face.a

911 KB
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‎opencv/android/arm64-v8a/libopencv_features2d.a

1.26 MB
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‎opencv/android/arm64-v8a/libopencv_flann.a

1.09 MB
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‎opencv/android/arm64-v8a/libopencv_fuzzy.a

70 KB
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‎opencv/android/arm64-v8a/libopencv_hfs.a

114 KB
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‎opencv/android/arm64-v8a/libopencv_highgui.a

263 KB
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‎opencv/android/arm64-v8a/libopencv_img_hash.a

165 KB
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‎opencv/android/arm64-v8a/libopencv_imgcodecs.a

290 KB
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‎opencv/android/arm64-v8a/libopencv_imgproc.a

5.34 MB
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‎opencv/android/arm64-v8a/libopencv_intensity_transform.a

8.94 KB
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‎opencv/android/arm64-v8a/libopencv_line_descriptor.a

248 KB
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‎opencv/android/arm64-v8a/libopencv_mcc.a

827 KB
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‎opencv/android/arm64-v8a/libopencv_objdetect.a

1.65 MB
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‎opencv/android/arm64-v8a/libopencv_optflow.a

531 KB
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‎opencv/android/arm64-v8a/libopencv_phase_unwrapping.a

48.8 KB
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‎opencv/android/arm64-v8a/libopencv_photo.a

975 KB
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‎opencv/android/arm64-v8a/libopencv_plot.a

36.1 KB
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‎opencv/android/arm64-v8a/libopencv_rapid.a

96.6 KB
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‎opencv/android/arm64-v8a/libopencv_reg.a

168 KB
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‎opencv/android/arm64-v8a/libopencv_rgbd.a

1.95 MB
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‎opencv/android/arm64-v8a/libopencv_saliency.a

249 KB
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‎opencv/android/arm64-v8a/libopencv_shape.a

266 KB
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‎opencv/android/arm64-v8a/libopencv_stereo.a

278 KB
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‎opencv/android/arm64-v8a/libopencv_structured_light.a

94.4 KB
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‎opencv/android/arm64-v8a/libopencv_superres.a

189 KB
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‎opencv/android/arm64-v8a/libopencv_surface_matching.a

691 KB
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‎opencv/android/arm64-v8a/libopencv_tracking.a

2.66 MB
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‎opencv/android/arm64-v8a/libopencv_video.a

818 KB
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‎opencv/android/arm64-v8a/libopencv_videoio.a

579 KB
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‎opencv/android/arm64-v8a/libopencv_videostab.a

430 KB
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‎opencv/android/arm64-v8a/libopencv_wechat_qrcode.a

1.32 MB
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‎opencv/android/arm64-v8a/libopencv_xfeatures2d.a

3.41 MB
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‎opencv/android/arm64-v8a/libopencv_ximgproc.a

2.23 MB
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‎opencv/android/arm64-v8a/libopencv_xobjdetect.a

138 KB
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‎opencv/android/arm64-v8a/libopencv_xphoto.a

724 KB
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‎opencv/android/arm64-v8a/libquirc.a

28.9 KB
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