t
 Title: gifclrmp
 Author: [see the "Author" section]
 Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
 Date: 2 May 2012
 Manual: GIFLIB Documentation
 Source: GIFLIB
 Language: English

 "GIFCLRMP" "1" "2 May 2012" "GIFLIB" "GIFLIB Documentation"
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 http://bugs.debian.org/507673
 http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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 "NAME"
gifclrmp - extract colormaps from GIF images

 "SYNOPSIS"
 \w'gifclrmp 'u
gifclrmp [-v] [-s] [-l mapfile] [-t trans] [-g gamma] [-i image] [-h] [gif-file]

 "DESCRIPTION"

A program to modify GIF image colormaps. Any local colormap in a GIF file can be modified at a time, or the global screen one.

 "OPTIONS"

-v


Verbose mode (show progress). Enables printout of running scan lines.




-s


Select the global screen color map.




-l mapfile


Load color map from this file instead of selected color map.




-t trans


Change color index values. The change is made to both the selected color table and the raster bits of the selected image. A translation file is a list of pairs of `before\*(Aq and `after\*(Aq index values. At present, the `before\*(Aq index values must be in ascending order starting from 0.




-g gamma


Apply gamma correction to selected color map.




-i image


Select the color map of the numbered image.




-h


Print one command line help, similar to Usage above.




If no GIF file is given, gifclip will try to read a GIF file from stdin.

 "NOTES"

\h'-04'\(bu\h'+03'\c
.\}

 \(bu 2.3
.\}
The default operation is to dump out the selected color map in text format.




\h'-04'\(bu\h'+03'\c
.\}

 \(bu 2.3
.\}
The file to load/dump is simply one color map entry per line. Each such entry line has four integers: "ColorIndex Red Green Blue", where color index is in ascending order starting from 1.



 "AUTHOR"

Gershon Elber.