[Question]: Changing Exposure/Gain while camera is running?

[JulianKnodt]

I was wondering whether there are any examples or if it's possible to change exposure/gain while a camera was running? From the basic example shown, I can't tell if this is possible at all, and it seems like it would be necessary to stop the camera, but I just wanted to ask in case I missed something.

[naushir]

Yes, this is possible by setting a libcamera control in a request object. The simplest way see this is via our Picamera2 python library. Have a look at the examples directory for usage.

[JulianKnodt]

Can you be more precise about which example you're talking about? I'm planning on just doing this in libcamera, and not using Picamera2 (I'm writing in C++ directly)

[naushir]

If you only want C++, you can have a look at rpicam-apps to see how we do it there, specifically here, where we pass in controls into the request object.