Thanks for your reply, you are correct, my question was about using custom sensors.
By referring to the same link as you posted: https://info.nvidia.com/using-custom-sensors-with-driveworks.html? they used the source codes under /usr/local/driveworks/samples/src/sensors/plugins/lidar_ext/ folder as example to generate out a plugin file (libsample_lidar_plugin_ext.so).
In my host installation there is no such a folder: /usr/local/driveworks/samples/src/sensors/plugins/lidar_ext/
Could you please help to clarify where I can find the example source codes to generate out a plugin file?
If I understand correctly, the source code to generate out the plugin is different than the codes in /usr/local/driveworks-2.0/samples/src/lidar_accumulator/