X11R7.4 - man page for xcmsdb (x11r4 section 1)
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xcmsdb - Device Color Characterization utility for X Color Management System
xcmsdb [ -query ] [ -remove ] [ -format 32|16|8 ] [ filename ]
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 Char-
acterization, 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_LINEAR_RGB_MATRICES property to convert
color specifications between CIEXYZ and RGB Intensity (XcmsRGBi, also referred to as lin-
ear RGB). Xcms then uses display gamma information stored in the XDCCC_LINEAR_RGB_CORREC-
TION 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 func-
tion 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 properties, provided the -query or -remove
options are not specified.
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.
Specifies the property format (32, 16, or 8 bits per entry) for the XDCCC_LIN-
EAR_RGB_CORRECTION property. Precision of encoded floating point values increases
with the increase in bits per entry. The default is 32 bits per entry.
xprop(1), Xlib documentation
DISPLAY to figure out which display and screen to use.
Chuck Adams, Tektronix Inc. Al Tabayoyon, SynChromatics Inc. (added multi-visual support)
X Version 11 xcmsdb 1.0.1 XCMSDB(1)
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