Don't know if this is the correct forum.
I am using Thines 13 Mega pixel Ascella EVM. How do I implement zoom in and zoom out function for UVC?
Add the zoom control in the UVC desciptors. This is a camera terminal control. Also the standard UVC video control requests needs to be added in the firmware. The SET/GET request should contain the Thine ISP register write/read. Please check other video controls to get the CX3 firmware framework for video control implementation.