xcmsdb

XCMSDB(1)                   General Commands Manual                  XCMSDB(1)

NAME
       xcmsdb  -  Device Color Characterization utility for X Color Management
       System

SYNOPSIS
       xcmsdb [ -query ] [ -remove ] [ -format 32|16|8 ] [ -help ] [  -version
       ] [ filename ]

DESCRIPTION
       xcmsdb  is used to load, query, or remove Device Color Characterization
       data stored in properties on the root window of the screen as specified
       in  section  7,  Device  Color  Characterization, of the ICCCM.  Device
       Color Characterization data (also called the Device Profile) is an  in-
       tegral  part  of Xlib's X Color Management System (Xcms), necessary for
       proper conversion of color specification between device-independent and
       device-dependent  forms.   Xcms  uses  3x3  matrices  stored in the XD-
       CCC_LINEAR_RGB_MATRICES property to convert  color  specifications  be-
       tween  CIEXYZ  and  RGB Intensity (XcmsRGBi, also referred to as linear
       RGB).  Xcms then uses display  gamma  information  stored  in  the  XD-
       CCC_LINEAR_RGB_CORRECTION  property to convert color specifications be-
       tween RGBi and RGB device (XcmsRGB, also referred to as device RGB).

       Note that Xcms allows clients to register function sets in addition  to
       its  built-in function set for CRT color monitors.  Additional function
       sets may store their device profile information in other properties  in
       function  set  specific  format.  This utility is unaware of these non-
       standard properties.

       The ASCII readable contents of filename (or the standard  input  if  no
       input file is given) are appropriately transformed for storage in prop-
       erties, provided the -query or -remove options are not specified.

OPTIONS
       xcmsdb program accepts the following options:

       -query  This option attempts to  read  the  XDCCC  properties  off  the
               screen's  root  window.   If successful, it transforms the data
               into a more readable format, then sends the  data  to  standard
               out.

       -remove This  option  attempts  to  remove  the XDCCC properties on the
               screen's root window.

       -format 32|16|8
               Specifies the property format (32, 16, or 8 bits per entry) for
               the XDCCC_LINEAR_RGB_CORRECTION property.  Precision of encoded
               floating point values increases with the increase in  bits  per
               entry.  The default is 32 bits per entry.

       -help   This  option  prints a summary of the available options and ex-
               its.

       -version
               This option prints the program version and exits.

SEE ALSO
       xprop(1), Xlib documentation

ENVIRONMENT
       DISPLAY to figure out which display and screen to use.

AUTHOR
       Chuck Adams, Tektronix Inc.  Al Tabayoyon,  SynChromatics  Inc.  (added
       multi-visual support)

X Version 11                     xcmsdb 1.0.5                        XCMSDB(1)