capWithXe/mainwindow.cpp

#include "mainwindow.h"
#include "./ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    cap = new VideoCapture();
    onCap = false;
    vt = new QTimer(this);
    //    vt->start(20);
    QObject::connect(vt,SIGNAL(timeout()),this,SLOT(showImage()));
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{
    if(onCap){
        vt->stop();
        onCap = false;
    }
    else{
        bool isnum;
        int z = ui->lineEdit->text().toUInt(&isnum);
        if(isnum){
            cap->open(z);

        }
        else{
            cap->open(ui->lineEdit->text().toStdString());
        }
        vt->start(20);
        onCap = true;
    }
}

void MainWindow::showImage(){
    if(NULL!=cap){
        if(cap->read(image)){
            //            image =

//            cv::edgePreservingFilter(image,image);
            cv::cvtColor(image,image,cv::COLOR_RGB2BGR);
            ui->label->setPixmap(QPixmap::fromImage(QImage(image.data,image.cols,image.rows,QImage::Format_RGB888)));
        }
    }
}

void MainWindow::on_pushButton_2_clicked()
{
    QFile f("img.bin");
    f.open(QIODevice::ReadWrite);
    QDataStream streamout(&f);
    streamout.writeBytes((char*)image.data,image.rows*image.cols*3);
    f.close();
}