How OMX core library is loaded for stagefright by chipset vendor like Qualcomm /Nvidia ?

How OMX core library is loaded for stagefright by chipset vendor like
Qualcomm /Nvidia ?

Qualcomm and NVIDIA processors will have built-in hardware codecs support.
They will provide the OMX components too. Their OMX core will be
loaded from libstagefrighthw.so .
This libstagefrighthw.so library will be loaded by stagefright in
OMXMaster.cpp in

addPlugin("libstagefrighthw.so");