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
255&215;(n/255)u//number\d.
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)
Copyright © 1995 Lucent Technologies. All rights reserved.