QT+UDP实时视频发送与接收.rar

#include <QDebug> #include <QImage> #include <QPixmap> #include "qttoopencv.h" #include "opencv2/imgproc/imgproc.hpp" #include "opencv2/imgproc/types_c.h" namespace QtToOpencv { // NOTE: This does not cover all cases - it should be easy to add new ones as required. QImage ImageConversion::cvMatToQImage( const cv::Mat &inMat ) { switch ( inMat.type() ) { // 8-bit, 4 channel case CV_8UC4: { QImage image( inMat.data, inMat.cols, inMat.rows, static_cast<int>(inMat.step), QImage::Format_ARGB32 ); return image; } // 8-bit, 3 channel case CV_8UC3: { QImage image( inMat.data, inMat.cols, inMat.rows, static_cast<int>(inMat.step), QImage::Format_RGB888 ); return image.rgbSwapped(); } // 8-bit, 1 channel case CV_8UC1: { #if QT_VERSION >= QT_VERSION_CHECK(5, 5, 0) QImage image( inMat.data, inMat.cols, inMat.rows, static_cast<int>(inMat.step), QImage::Format_Grayscale8 ); #else static QVector<QRgb> sColorTable; // only create our color table the first time if ( sColorTable.isEmpty() ) { sColorTable.resize( 256 ); for ( int i = 0; i < 256; ++i ) { sColorTable[i] = qRgb( i, i, i ); } } QImage image( inMat.data, inMat.cols, inMat.rows, static_cast<int>(inMat.step), QImage::Format_Indexed8 ); image.setColorTable( sColorTable ); #endif return image; } default: qWarning() << "ASM::cvMatToQImage() - cv::Mat image type not handled in switch:" << inMat.type(); break; } return QImage(); } QPixmap ImageConversion::cvMatToQPixmap( const cv::Mat &inMat ) { return QPixmap::fromImage( cvMatToQImage( inMat ) ); } cv::Mat ImageConversion::QImageToCvMat(const QImage &inImage, bool inCloneImageData) { switch (inImage.format()) { // 8-bit, 4 channel case QImage::Format_ARGB32: case QImage::Format_ARGB32_Premultiplied: { cv::Mat mat(inImage.height(), inImage.width(), CV_8UC4, const_cast<uchar*>(inImage.bits()), static_cast<size_t>(inImage.bytesPerLine()) ); return (inCloneImageData ? mat.clone() : mat); } // 8-bit, 3 channel case QImage::Format_RGB32: case QImage::Format_RGB888: { if (!inCloneImageData) { qWarning() << "ASM::QImageToCvMat() - Conversion requires cloning because we use a temporary QImage"; } QImage swapped = inImage; if (inImage.format() == QImage::Format_RGB32) { swapped = swapped.convertToFormat(QImage::Format_RGB888); } swapped = swapped.rgbSwapped(); return cv::Mat(swapped.height(), swapped.width(), CV_8UC3, const_cast<uchar*>(swapped.bits()), static_cast<size_t>(swapped.bytesPerLine()) ).clone(); } // 8-bit, 1 channel case QImage::Format_Indexed8: { cv::Mat mat(inImage.height(), inImage.width(), CV_8UC1, const_cast<uchar*>(inImage.bits()), static_cast<size_t>(inImage.bytesPerLine()) ); return (inCloneImageData ? mat.clone() : mat); } default: qWarning() << "ASM::QImageToCvMat() - QImage format not handled in switch:" << inImage.format(); break; } return cv::Mat(); } //inline 表示该函数是内联函数 就是用 用函数内部的东西代替该函数名，这样可以节省 栈空间 cv::Mat ImageConversion::QPixmapToCvMat( const QPixmap &inPixmap, bool inCloneImageData ) { return QImageToCvMat( inPixmap.toImage(), inCloneImageData ); } }