Annotation of src/usr.bin/audioctl/audioctl.1, Revision 1.10
1.10 ! aaron 1: .\" $OpenBSD: audioctl.1,v 1.9 2000/03/10 19:07:21 aaron Exp $
1.4 provos 2: .\" $NetBSD: audioctl.1,v 1.7 1998/04/27 16:55:23 augustss Exp $
1.1 provos 3: .\" Copyright (c) 1997 The NetBSD Foundation, Inc.
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6: .\" Author: Lennart Augustsson
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36: .Dd May 4, 1997
37: .Dt AUDIOCTL 1
38: .Os
39: .Sh NAME
40: .Nm audioctl
41: .Nd control audio device
42: .Sh SYNOPSIS
1.6 aaron 43: .Nm audioctl
1.1 provos 44: .Op Fl f Ar file
45: .Op Fl n
46: .Fl a
1.6 aaron 47: .Nm audioctl
1.1 provos 48: .Op Fl f Ar file
49: .Op Fl n
1.5 aaron 50: .Ar name
51: .Op Ar ...
1.6 aaron 52: .Nm audioctl
1.1 provos 53: .Op Fl f Ar file
54: .Op Fl n
55: .Fl w
1.5 aaron 56: .Ar name=value
57: .Op Ar ...
1.1 provos 58: .Sh DESCRIPTION
1.7 aaron 59: The
1.1 provos 60: .Nm
61: command displays or sets various audio system driver variables.
1.5 aaron 62: If a list of variables is present on the command line,
1.1 provos 63: .Nm
64: prints the current value of those variables for the specified device.
1.8 aaron 65: By default,
1.1 provos 66: .Nm
1.8 aaron 67: operates on the
68: .Pa /dev/audioctl
69: device.
1.1 provos 70: .Pp
1.8 aaron 71: The options are as follows:
1.10 ! aaron 72: .Bl -tag -width Ds
1.8 aaron 73: .It Fl a
74: Print all device variables and their current values.
75: .It Fl w Ar name=value
76: Attempt to set the specified variable
77: .Ar name
78: to
79: .Ar value .
80: .It Fl f Ar file
81: Specify an alternative audio control device.
82: .It Fl n
83: Suppress printing of the variable name.
84: .El
1.1 provos 85: .Sh EXAMPLES
86: To set the playing sampling rate to 11025 you can enter
1.8 aaron 87: .Pp
1.1 provos 88: .Dl audioctl -w play.sample_rate=11025
1.8 aaron 89: .Pp
1.1 provos 90: Note that many of the variables that can be inspected and changed
1.8 aaron 91: are reset when the device is opened.
92: This can be circumvented like so:
93: .Pp
1.1 provos 94: .Dl (cat file.au; audioctl -f /dev/stdout -a) > /dev/audio
1.8 aaron 95: .Pp
1.1 provos 96: or
1.8 aaron 97: .Pp
1.1 provos 98: .Dl (audioctl -f /dev/stdout -w blocksize=1024; cat file.au) > /dev/audio
1.8 aaron 99: .Sh ENVIRONMENT
1.9 aaron 100: The following environment variables affect the execution of
101: .Nm audioctl :
1.8 aaron 102: .Bl -tag -width AUDIOCTLDEVICE
103: .It Ev AUDIOCTLDEVICE
1.9 aaron 104: Audio control device to use.
105: .El
1.1 provos 106: .Sh FILES
107: .Bl -tag -width /dev/audioctl
108: .It Pa /dev/audioctl
1.8 aaron 109: default audio control device
1.1 provos 110: .El
111: .Sh SEE ALSO
112: .Xr mixerctl 1 ,
113: .Xr audio 4 ,
114: .Xr sysctl 8
115: .Sh HISTORY
116: The
117: .Nm
118: command first appeared in
119: .Nx 1.3 .