From 5eb6165d6806f5656802a6f58feea9469dad6141 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Mon, 7 Oct 2019 16:39:46 +0200
Subject: Reorganise, change license, portable makefile, and reference radharc
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Signed-off-by: Mattias Andrée <maandree@kth.se>
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+.TH CG-LIMITS 1 CG-TOOLS
+.SH NAME
+cg-limits - Adjust the brightness and contrast on the monitors
+.SH SYNOPSIS
+.B cg-limits
+.RB [ \-M
+.IR method ]
+.RB [ \-S
+.IR site ]
+.RB [ \-c
+.IR crtc "]... ["\fB\-R\fP
+.IR rule ]
+.RB ( \-x
+|
+.RB [ \-p
+.IR priority ]
+.RB [ \-d ]
+.RB ([ \-B
+.IR brightness-file ]
+.RB [ \-C
+.IR contrast-file ]
+|
+.IB brightness-all : contrast-all
+|
+.IB brightness-red : contrast-red
+.IB brightness-green : contrast-green
+.IR brightness-blue \fB:\fP contrast-blue ))
+.SH DESCRIPTION
+.B cg-limits
+sets the brightness (the brightness of black) on the monitors to
+.I brightness-all
+and the contrast (the brightness of white) on the monitors to
+.I contrast-all
+on all channels, or the brightness to
+.IR brightness-red ,
+.IR brightness-green ,
+and
+.I brightness-blue
+to the red, green, and blue channels, respectively, and the
+contrasts to
+.IR contrast-red ,
+.IR contrast-green ,
+and
+.IR contrast-blue .
+Alternatively,
+.B cg-limits
+can change the brightness on each monitor independently by
+using reading the values from
+.I brightness-file
+and the contrast on each monitor independently by
+using reading the values from
+.I contrast-file
+or default files.
+.P
+The files are 4-column text files where empty lines and lines
+starting with a
+.RB ' # ',
+after any whitespace, are ignored.
+The values in the columns should be, in order, a monitor's
+EDID, that monitor's red value, green value, and blue value.
+.SH OPTIONS
+.TP
+.B \-B " "\fIbrightness-file\fP
+Read the brightness values from the selected file.
+.TP
+.B \-C " "\fIbrightness-file\fP
+Read the contrast values from the selected file.
+.TP
+.BR \-c " "\fIcrtc\fP
+Apply the filter to the CRTC with the monitor whose EDID is
+.IR crtc .
+By default, the filter is applied to all monitors.
+
+If
+.I crtc
+is
+.RB ' ? ',
+all available CRTC's are listed.
+.TP
+.B \-d
+Keep the process alive and remove the filter on death.
+.TP
+.BR \-M " "\fImethod\fP
+Adjustment method name or number. Recognised names include:
+.TS
+tab(:);
+l l.
+\fBdummy\fP:Dummy method
+\fBrandr\fP:X RAndR
+\fBvidmode\fP:X VidMode
+\fBdrm\fP:Linux DRM
+\fBgdi\fP:Windows GDI
+\fBquartz\fP:Quartz Core Graphics
+.TE
+
+The adjustment methods are supported via
+.BR libgamma (7).
+Only methods that were enabled when
+.B libgamma
+was compiled will be supported.
+
+If
+.I method
+is
+.RB ' ? ',
+all available adjustment methods are printed.
+.TP
+.BR \-p " "\fIpriority\fP
+Set the priority of the filter. Filters with higher priority
+are applied before filters with lower priority. The value
+must be a signed 64-bit integer (between \-9223372036854775807
+and 9223372036854775807).
+.BR cg-limits 's
+default priority is \-4611686018427387904.
+
+If
+.I priority
+is
+.RB ' ? ',
+the utility's default priority is printed.
+.TP
+.BR \-R " "\fIrule\fP
+Set the rule of of the filter to
+.IR rule .
+This is the last part of the filter's identifier (class).
+The default rule is
+.BR standard .
+
+If
+.I rule
+is
+.RB ' ? '
+the utility's default rule is printed. If
+.I rule
+is
+.RB ' ?? '
+the utility's default class is printed.
+.TP
+.BR \-S " "\fIsite\fP
+Select the site to which to connect. For example
+.RB ' :0 ',
+for local display 0 when using
+.BR X .
+.TP
+.B \-x
+Remove the currently applied filter.
+.SH FILES
+.TP
+.B ~/.config/brightness
+The default brightness table file.
+.TP
+.B ~/.config/contrast
+The default contrast table file.
+.TP
+.B /etc/brightness
+The fallback brightness table file.
+.TP
+.B /etc/contrast
+The fallback contrast table file.
+.SH SEE ALSO
+.BR cg-tools (7)
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