xcmsdb - Device Color Characterization utility for X Color Management System
] [ -remove
] [ -help
] [ filename
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_LINEAR_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
input file is given) are appropriately transformed for storage in properties,
provided the -query
options are not specified.
program accepts the following options:
- 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.
- This option attempts to remove the XDCCC properties on the screen's root
- -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.
- This option prints a summary of the available options and exits.
- This option prints the program version and exits.
xprop(1), Xlib documentation
- to figure out which display and screen to use.
Chuck Adams, Tektronix Inc. Al Tabayoyon, SynChromatics Inc. (added multi-visual