I checked droidcam before and AFAIK it solves the problem of using adnroid device as webcam using server and client apps.

I want to expose low level camera capabilities like manual focus controll, capturing raw images, iso, etc. DroidCam exposes only subset of functionality I need.

In short i want it to be more like programmable controlled digital camera than webcam.

BTW scrcpy offers similar features trough adb to DroidCam.