brightness_debug (draws luminance histogram & autodetected white/black level) git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3014 b3059339-0415-0410-9bf9-f77b7e298cf2
brightness_debug (draws luminance histogram & autodetected white/black level) git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3014 b3059339-0415-0410-9bf9-f77b7e298cf2