Here is a list of all documented files with brief descriptions:

src
_stdint.h
chdk_live_view.h
chdk_ptp.h
device-flags.h
libmtp.c
libmtp.h
libusb-glue.h
mtpz.c
mtpz.h
music-players.h
playlist-spl.h
ptp-pack.c
ptp.h
unicode.c
unicode.h
util.c
util.h
examples.h
mainpage.h