QML optimal way to stream/update images (Qt 5)
First, a little background: I'm trying to display image data streamed from a medical device in real time. The approach I am currently testing is to define a QML Image element with a custom source (e.g. "image://device/0") and use a custom QQuickImageProvider::requestPixmap() to feed the Image element with fresh data from the device.
The problem is that the Image flickers whenever I update its contents, i.e. it disappears for a moment before it reappears with the fresh data.
Is there a way to enable some form of double-buffering to avoid this ugly flicker?
Alternatively, is there a more efficient way to go about implementing this? I would imagine that I might be able to use something like a Video element with a custom source that feeds it new frames as necessary. Unfortunately, I haven't been able to find anything relevant in the documentation.
I'd be grateful if someone could point me to the right direction!