https://docs.nvidia.com/metropolis/deepstream/dev-guide/sdk-api/9_80_2sources_2gst-plugins_2gst-nvmsgbroker_2gstnvmsgbroker_8h_source.html
NVIDIA DeepStream SDK API Reference: gstnvmsgbroker.h Source File | NVIDIA Docs
sdk api referencenvidiadeepstreamhsource