/usr/include/directfb/direct/ is in libdirectfb-dev 1.2.10.0-5.1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/directfb/direct/build.h
/usr/include/directfb/direct/clock.h
/usr/include/directfb/direct/conf.h
/usr/include/directfb/direct/debug.h
/usr/include/directfb/direct/direct.h
/usr/include/directfb/direct/hash.h
/usr/include/directfb/direct/interface.h
/usr/include/directfb/direct/interface_implementation.h
/usr/include/directfb/direct/list.h
/usr/include/directfb/direct/log.h
/usr/include/directfb/direct/mem.h
/usr/include/directfb/direct/memcpy.h
/usr/include/directfb/direct/messages.h
/usr/include/directfb/direct/modules.h
/usr/include/directfb/direct/serial.h
/usr/include/directfb/direct/signals.h
/usr/include/directfb/direct/stream.h
/usr/include/directfb/direct/system.h
/usr/include/directfb/direct/thread.h
/usr/include/directfb/direct/trace.h
/usr/include/directfb/direct/tree.h
/usr/include/directfb/direct/types.h
/usr/include/directfb/direct/utf8.h
/usr/include/directfb/direct/util.h