/usr/include/ is in libfarstream-0.1-dev 0.1.2-1ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/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