aboutsummaryrefslogtreecommitdiffstats
path: root/cg-limits.1
blob: 9ac16b4f624512302930211c4771d85b168fea3b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
.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)