/usr/ is in libfarstream-0.1-dev 0.1.2-1ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/farstream-0.1.pc
/usr/lib/x86_64-linux-gnu/libfarstream-0.1.a
/usr/share/
/usr/share/doc/
/usr/share/doc/libfarstream-0.1-dev/
/usr/share/doc/libfarstream-0.1-dev/copyright
/usr/share/gir-1.0/
/usr/share/gir-1.0/Farstream-0.1.gir
/usr/include/
/usr/include/farstream-0.1/
/usr/include/farstream-0.1/farstream/
/usr/include/farstream-0.1/farstream/fs-codec.h
/usr/include/farstream-0.1/farstream/fs-rtp.h
/usr/include/farstream-0.1/farstream/fs-conference.h
/usr/include/farstream-0.1/farstream/fs-enumtypes.h
/usr/include/farstream-0.1/farstream/fs-stream-transmitter.h
/usr/include/farstream-0.1/farstream/fs-utils.h
/usr/include/farstream-0.1/farstream/fs-stream.h
/usr/include/farstream-0.1/farstream/fs-session.h
/usr/include/farstream-0.1/farstream/fs-plugin.h
/usr/include/farstream-0.1/farstream/fs-candidate.h
/usr/include/farstream-0.1/farstream/fs-element-added-notifier.h
/usr/include/farstream-0.1/farstream/fs-transmitter.h
/usr/include/farstream-0.1/farstream/fs-participant.h
/usr/lib/x86_64-linux-gnu/libfarstream-0.1.so
/usr/share/doc/libfarstream-0.1-dev/changelog.Debian.gz