ref: 948870cffe2572efb68ef0b3873b36238fb53263
dir: /man/2/volume/
.TH VOLUME 2 mux .SH NAME volume \- volume control for an infrared interface .SH SYNOPSIS .EX include "volume.m"; vctl := load Volumectl Volumectl->PATH; volumectl: fn(ctxt: ref Draw->Context, ch: chan of int, device: string); .EE .SH DESCRIPTION .B Volumectl should be spawned as a separate process from any process that desires volume control via an infrared interface. .I Ctxt provides .B volumectl with access to the display, on which it displays a slider widget. The slider automatically disappears after several seconds of inactivity. .B Volumectl receives input from the infrared controller on channel .IR ch . The values recognized are: .TF Enter .PD .TP .B VolUP increase volume .TP .B VolDN decrease volume .TP .B Enter exit .PP .I Device is a string used as a prefix to commands to the device; for example .B "audio out" .ft P for .IR audio (3). .SH FILES .B /dev/volume .SH SOURCE .B /appl/lib/volume.b .SH "SEE ALSO" .IR ir (2), .IR prefab-intro (2)