/usr/ is in libfarstream-0.2-dev 0.2.8-4.1~build1.
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..
/usr/include/
/usr/include/farstream-0.2/
/usr/include/farstream-0.2/farstream/
/usr/share/
/usr/share/doc/
/usr/share/doc/libfarstream-0.2-dev/
/usr/include/farstream-0.2/farstream/fs-candidate.h
/usr/include/farstream-0.2/farstream/fs-codec.h
/usr/include/farstream-0.2/farstream/fs-conference.h
/usr/include/farstream-0.2/farstream/fs-element-added-notifier.h
/usr/include/farstream-0.2/farstream/fs-enumtypes.h
/usr/include/farstream-0.2/farstream/fs-participant.h
/usr/include/farstream-0.2/farstream/fs-plugin.h
/usr/include/farstream-0.2/farstream/fs-rtp.h
/usr/include/farstream-0.2/farstream/fs-session.h
/usr/include/farstream-0.2/farstream/fs-stream-transmitter.h
/usr/include/farstream-0.2/farstream/fs-stream.h
/usr/include/farstream-0.2/farstream/fs-transmitter.h
/usr/include/farstream-0.2/farstream/fs-utils.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/farstream-0.2.pc
/usr/share/doc/libfarstream-0.2-dev/copyright
/usr/share/gir-1.0/
/usr/share/gir-1.0/Farstream-0.2.gir
/usr/lib/x86_64-linux-gnu/libfarstream-0.2.so
/usr/share/doc/libfarstream-0.2-dev/changelog.Debian.gz