Question

We are using vlcj to capture a webcam video and display it on the user screen. We capture it frame by frame, a 1280×720 image at around 30fps.

Our app UI is entirely JavaFX, and we are having problems displaying said frame.

Using Swing, we would do something like:

BufferedImage image; //create compatible image

public void onDisplay(int[] rgbBuffer){
      image.setRGB(0,0,width, height, rgbBuffer, 0, width);
      myJPane.repaint();  
}

But JavaFX’s Image class offers no such methods, and creating a BufferedImage just to convert it to a JavaFX Image (by using Image.impl_fromPlatformImage()) is highly costly.

Question: How does one create a JavaFX Image, that can be set to an ImageView, based on a rgb int[]? Is there a better (as in “faster”) way to display it?

Answer 1

This functionality is not yet part of the JavaFX platform – for now I believe you have to use the BufferedImage method you are currently using.

You can track the feature Image Ops request. Anybody can sign up for a jira account and vote for the issue/add comments/detail use cases/etc or provide input to the design on the JavaFX development mailing list.