RTMDet-Ins postprocessing source code in C

[acg93-pixel]

Hi, I'm trying to deploy RTMDet_Ins to custom embedded device, so I can't use mmdeploy directly.
I was wondering, is there a simplified postprocessing code for RTMDet-Ins in C? Basically, all I need is function predict_by_feat: mmdeploy/codebase/mmdet/models/dense_heads/rtmdet_ins_head.py written in C, but couldn't find in SDK source code.