How to create a custom GStreamer Deepstream plugin which uses OpenCV for out of place transforms?

[junshengy]

1. Did you check the sample code of gst-dsexample ? This element shows how to work with opencv, you can rewrite it to an out of place transform element.

2.This code snippet show how to map data from NvBufSurfaceMap and use for opencv.

Deepstream sample code snippet

Simple description for your code a. Creating nv12 opencv mat from NvMM memory, b. Work on opencv nv12 mat, do conversion to other opencv RGBA mat, rgba mat. c. Create another scratch RGBA NvBufSurface and do opencv conversion to rotate RGBA in rotate mat. d. Transform rotated RGBA mat to NV12 memory in original input surface e. So now NvMM NV12 memory from original buffer is also rotated. Which version are you based on a. DS 5.0 DP Which platform have you verified for your code a. T4 --…