plan9 man page for getcmap

GETCMAP(9.2)															      GETCMAP(9.2)

NAME
       getcmap - read a color map from a file

SYNOPSIS
       #include <libg.h>

       #include <fb.h>

       int getcmap(char *name, uchar *map)

DESCRIPTION
       Getcmap retrieves the named colormap and stores it in map.  Usually name is the name of a colormap file (see cmap(9.6)) or a picfile with a
       CMAP= attribute.  If the file is not found, it is sought in /lib/fb/cmap.

       If the file cannot be found, and its name has the form gammanumber, a colormap is fabricated with all three channels of its nth	entry  set
       to 255x(n/255)1/number.	If the name is just gamma, number=2.3 is assumed.

       There is no putcmap, because write (in read(2)) can do the job.

SOURCE
       /sys/src/libfb/getcmap.c

SEE ALSO
       cmap(9.6), picfile(9.6) rgbpix(2)

																      GETCMAP(9.2)