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 integral
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 XDCCC_LIN-
EAR_RGB_MATRICES property to convert color specifications between CIEXYZ
and RGB Intensity (XcmsRGBi, also referred to as linear RGB). Xcms then
uses display gamma information stored in the XDCCC_LINEAR_RGB_CORRECTION
property to convert color specifications between 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 in-
put file is given) are appropriately transformed for storage in proper-
ties, 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 exits.
-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 1.0.7 XCMSDB(1)
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