Which mechanism(jni/library) used for HDMI IN connectivity

Hi Team, We would like to connect HDMI IN to this VIM4 board and stream the camera live video content.

We are able to connect and stream using HDMI IN through other boards like bpi, in this we were using Realtek HDMI Manager APIs to set surface and preview display.

May i know which HDMI IN APIs will support this VIM4 board to stream through HDMI connection?

Thanks in advance.