彥霖 實驗筆記

*.pro 文件加入：

    QT += core   gui   multimediamulti   mediawidgets

------------------------------------------------------------------------

mainwindow.h 檔案：

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

#include <QCameraImageCapture>

#include <QCameraViewfinder>

#include <QCamera>

#include <QTimer>

#include <QImage>

#include <QDebug>

#include <QFile>

namespace Ui{

    class MainWindow;

}

class MainWindow : public QMainWindow {

    Q_OBJECT

public:

    explicit MainWindow(QWidget*parent=0);

    ~MainWindow();

private:

    Ui::MainWindow*ui;

    QCameraImageCapture*ic;

privateslots:

    void displayImage(intid,QImageimage);

    void videoFrameCapture();

};

#endif //MAINWINDOW_H

------------------------------------------------------------------------

mainwindow.cpp 檔案：

#include "mainwindow.h"

#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget*parent):

QMainWindow(parent),

ui(new Ui::MainWindow){

    ui->setupUi(this);

    QCamera*c = new QCamera;

    ic = new QCameraImageCapture(c);

    QCameraViewfinder*vf = new QCameraViewfinder();

    QTimer * t = new QTimer(this);

    connect(t,SIGNAL(timeout()),

        this,SLOT(videoFrameCapture()));

    connect(ic,SIGNAL(imageCaptured(int,QImage))

        ,this,SLOT(displayImage(int,QImage)));

    //設定視訊參數

    c->setCaptureMode(QCamera::CaptureViewfinder);

    c->setViewfinder(vf);

    c->start();//開始擷取畫面

    t->start(33);//每33毫秒觸發displayImage()

}

//擷取畫面

void MainWindow::videoFrameCapture(){

    ic->capture();

}

//寫到Label中

void MainWindow::displayImage(int id, QImage image){

    ui->imgLabel->setPixmap(QPixmap::fromImage(image));

    ////保存圖片

    //QFilefile("C:/Test/yourFile.png");

    //file.open(QIODevice::WriteOnly);

    //ui->imgLabel->pixmap()->save(&file,"PNG");

}

MainWindow::~MainWindow(){

    delete ui;

}