/usr/ is in libplayerc++3.0-dev 3.0.2+dfsg-4.1ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/player-3.0/
/usr/lib/player-3.0/UsePlayerC++.cmake
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/playerc++.pc
/usr/include/
/usr/include/player-3.0/
/usr/include/player-3.0/libplayerc++/
/usr/include/player-3.0/libplayerc++/playererror.h
/usr/include/player-3.0/libplayerc++/playerc++config.h
/usr/include/player-3.0/libplayerc++/playerclient.h
/usr/include/player-3.0/libplayerc++/utility.h
/usr/include/player-3.0/libplayerc++/playerc++.h
/usr/include/player-3.0/libplayerc++/clientproxy.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libplayerc++3.0-dev/
/usr/share/doc/libplayerc++3.0-dev/copyright
/usr/lib/libplayerc++.so
/usr/share/doc/libplayerc++3.0-dev/changelog.Debian.gz