基本上,我做一些图像处理,在QLabel使用QImage,以视频序列显示目前的框架。 我要说的是,我要将QImage更新到30 fps的下一个框架中(或者如果30分点之间没有进行某些处理,等待完成),但我不想在整个30个点期间停止。
因此,流动是......
if (done_some_work && 30fps_interval_has_passed)
{
updateQImage();
}
如何在Qt这样做? 感谢!
基本上,我做一些图像处理,在QLabel使用QImage,以视频序列显示目前的框架。 我要说的是,我要将QImage更新到30 fps的下一个框架中(或者如果30分点之间没有进行某些处理,等待完成),但我不想在整个30个点期间停止。
因此,流动是......
if (done_some_work && 30fps_interval_has_passed)
{
updateQImage();
}
如何在Qt这样做? 感谢!
并使用Qtimer发出信号,每1 000/30 ms发出信号。
myTimer= new QTimer(this);
myTimer->setInterval(1000/fps); // ms
connect(myTimer, SIGNAL(timeout()), this, SLOT(doNextFrame()));
// where
public slots:
virtual void doNextFrame() {repaint();}
评论是正确的,你应在另一处做事,然后表示,如果你想直观地更新一些东西,你想要更新该信。 如果不处理有关“国际倡议”的线索或你的“全球倡议”的工作,就会不敏感。 这个问题与全球倡议问题一样,也如此之多。
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