How do qt combine with API camera2 .

[DQUY05]

Hi everyone !

I use Qt5.15, C++, I want to use Camera API integrator, how do I start,
thanks

[SGaist]

Hi,

Do you mean you want to implement a custom QCamera backend ?

[DQUY05]

@SGaist said in How do qt combine with API camera2 .:

Hi,

Do you mean you want to implement a custom QCamera backend ?

Dear Sir !

I want to use it like this, to get realtime camera video, because Qt android is hard to get realtime camera even using Opencv method directly

Thanks!

[SGaist]

What issues do you have with real-time camera in Qt ?
OpenCV should also be fast provided you use it correctly.

[DQUY05]

@SGaist said in How do qt combine with API camera2 .:

What issues do you have with real-time camera in Qt ?
OpenCV should also be fast provided you use it correctly.

Hello !

I am using QVideoProbe to get real time camera according to this link, but it is still a bit slow due to delay, is there any way to increase the interrupt time

      camera1->setCaptureMode(QCamera::CaptureVideo);

      bool ret = probe_.setSource(camera1);
      if(ret)
      {
       ui->inform->setText("đã nhận");
      }

      connect(&probe_,SIGNAL(videoFrameProbed(const QVideoFrame)),
              this, SLOT(handleFrame(const QVideoFrame)));

      camera1->start();

Thanks!

[SGaist]

Is the delay introduced by your video frame processing ?

[DQUY05]

@SGaist said in How do qt combine with API camera2 .:

Is the delay introduced by your video frame processing ?

No, I display it directly on a label, please help me where is it late

void MainWindow::handleFrame(QVideoFrame frame)
{

     QImage image = frame.image();
     ui->label_2->setPixmap(QPixmap::fromImage(image));
}

Thanks!