/usr/include/libhdhomerun/ is in libhdhomerun-dev 20180327-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libhdhomerun/hdhomerun.h
/usr/include/libhdhomerun/hdhomerun_channels.h
/usr/include/libhdhomerun/hdhomerun_channelscan.h
/usr/include/libhdhomerun/hdhomerun_control.h
/usr/include/libhdhomerun/hdhomerun_debug.h
/usr/include/libhdhomerun/hdhomerun_device.h
/usr/include/libhdhomerun/hdhomerun_device_selector.h
/usr/include/libhdhomerun/hdhomerun_discover.h
/usr/include/libhdhomerun/hdhomerun_os.h
/usr/include/libhdhomerun/hdhomerun_os_posix.h
/usr/include/libhdhomerun/hdhomerun_os_windows.h
/usr/include/libhdhomerun/hdhomerun_pkt.h
/usr/include/libhdhomerun/hdhomerun_sock.h
/usr/include/libhdhomerun/hdhomerun_types.h
/usr/include/libhdhomerun/hdhomerun_video.h