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@@ -0,0 +1,90 @@ +NAME + coopgammad - Cooperative gamma server + +SYNOPSIS + coopgammad [-m method] [-s site] [-fkpq] + +DESCRIPTION + Programs that desire to change the gamma adjustment + on a display should use this program instead of + talking directly with the display server (unless + the display server is mds). By doing this, multiple + programs can add filters to the display without + overriding each others effects. + + By using coopgammad to apply adjustments, you can + select whether the adjustment is persistent or + shall be removed when your program disconnects + from coopgammad. Even if the adjustment is persistent + it can be modified or removed later by another + process. + +OPTIONS + -f + Done fork the process to the background. + If used, you can still detect when the + process has been initialised be waiting + for its stdout to close. + + -k + Do not close stderr when forking to the + background + + -m METHOD + Adjustment method name or number. Recognised + names include: + + dummy Dummy method + randr X RAndR + vidmode X VidMode + drm Linux DRM + gdi Windows GDI + quartz Quartz Core Graphics + + The adjustment methods are supported via + libgamma(7). Only methods that were enabled + when libgamma as compiled will be supported. + + -p + Add the current gamma adjustments to the + filter list at priority 0. Even if this + is not used, the gamma adjustments will + not change for an output until a filter + has been added for that output. + + -q + If used once, print the selected adjustment + method for the first line to stdout, and + if site's have names for that method, print + the name of the selected site on the second + line to stdout. The second line can be omitted + if -s has not been used and the default site + cannot be find. + + if used atleast twice, print the pathname + of the socket for the select method and site + combination to stdout. Under unusual + circumstances, the path may contain LF + characters, but it will always be terminated + by one extra LF to mark the end of the + printed line. + + -s SITE + Select the site to which to connect. + For example ':0', for local display 0 when + using X. + +SIGNALS + SIGUSR1 + Reexecute the process to an updated version + +RATIONALE + Of reading the description section, the need for + this should be obvious. + + I plan to reuse code written for this program when + implementing mds-coopgamma(1), therefore, the + protocol is overly complicated. + +SEE ALSO + libgamma(7), blueshift(1), mds-coopgamma(1) |