mirror of
https://gitee.com/drabel/LibQQt.git
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89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
#include "mainwindow.h"
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#include "ui_mainwindow.h"
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#include <qqtcore.h>
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MainWindow::MainWindow ( QWidget* parent ) :
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QMainWindow ( parent ),
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ui ( new Ui::MainWindow )
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{
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ui->setupUi ( this );
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camera = 0;
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probe = new QVideoProbe ( this );
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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void MainWindow::on_pushButton_clicked()
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{
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on_pushButton_2_clicked();
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//start
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camera = new QCamera ( QCamera::FrontFace );
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camera->setCaptureMode ( QCamera::CaptureVideo );
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bool ret = probe->setSource ( camera );
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pline() << ret;
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connect ( probe, SIGNAL ( videoFrameProbed ( QVideoFrame ) ), this, SLOT ( present ( QVideoFrame ) ) );
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camera->start();
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}
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void MainWindow::on_pushButton_2_clicked()
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{
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//stop
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if ( camera )
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{
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camera->stop();
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camera->deleteLater();
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camera = 0;
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}
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}
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void MainWindow::slotSetPicture ( QImage img )
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{
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ui->widget->setPixmap ( img );
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}
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void MainWindow::present ( const QVideoFrame& frame )
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{
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pline() << "ggg";
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if ( !frame.isValid() )
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return;
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QVideoFrame cloneFrame ( frame );
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/**
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* frame 可读
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*/
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if ( !cloneFrame.map ( QAbstractVideoBuffer::ReadOnly ) )
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return;
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/**
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* 处理frame
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*/
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//Android下的视频格式是怎么回事？需要转换吗？
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const QImage _image ( cloneFrame.bits(),
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cloneFrame.width(),
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cloneFrame.height(),
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QVideoFrame::imageFormatFromPixelFormat ( cloneFrame.pixelFormat() ) );
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//需要对水平方向反转。
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//Windows，现在的图像保存能成功，直接显示，程序会异常退出。使用QImage的mirrored函数进行了水平翻转，可以正常显示。
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//水平翻转是为了不崩溃，正常显示图像。必选。
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//垂直翻转是为了上下显示正常。
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const QImage image = _image.mirrored ( true, true );
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/**
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* frame 不可读
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*/
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cloneFrame.unmap();
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slotSetPicture ( image );
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return;
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}
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