src/usr.bin/mixerctl/mixerctl.1 - diff

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Diff for /src/usr.bin/mixerctl/Attic/mixerctl.1 between version 1.9 and 1.10

version 1.9, 1998/12/16 02:38:50

version 1.10, 2000/03/10 18:34:39

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The

.Nm

command displays or sets various audio system mixing variables.

If a list of variables is present on the command line, then

If a list of variables is present on the command line,

.Nm

prints the current value of those variables for the specified device.

If the

By default,

.Fl a

flag is specified, all variables for the device are printed.

If the

.Fl w

flag is specified

.Nm

attempts to set the specified variables to the given values.

operates on the

.Pa /dev/mixer

device.

.Pp

The options are as follows:

.Bl -tag -width "-w name=value"

.It Fl a

Print all device variables and their current values.

.It Fl w Ar name=value

Attempt to set the specified variable

.Ar name

.Ar value .

.It Fl v

Show the possible values of enumeration and set valued variables.

Enumerated values are shown in

.Dq []

and set values are shown in

.Dq {} .

.It Fl f Ar file

Specify an alternative audio mixing device.

.It Fl n

Suppress printing of the variable name.

.El

.Pp

Values may be specified in either absolute or relative forms.

The relative form is indicated by a prefix of

.Dq +

.Ql +

.Dq -

.Ql -

to denote an increase or decrease respectively.

to denote an increase or decrease, respectively.

.Pp

The

The exact set of controls that can be manipulated depends on

.Fl f

the mixer.

flag can be used to give an alternative mixer device, the default is

The general format (in both getting and setting a value) is

.Pa /dev/mixer .

.Pp

The

.Va class.name = value

.Fl n

flag suppresses printing of the variable name.

.Pp

The

.Fl v

flag shows the possible values of enumeration and set valued

variables. Enumerated values are shown in [] and set values

are shown in {}.

.Pp

The exact set of controls that can be manipulated depends on

the mixer. The general format (in both getting and setting a value)

.br

.Va "class.name" = value

.br

The

.Va class

can have values like

.Li inputs

.Li outputs

indicating that the control affects the input resp. output to the

mixer. The

mixer.

The

.Va name

indicates what part of the mixer the control affects.

Continuous mixer values, e.g., volume, have numeric values

in the range 0-255. If value can be set for each channel independently

in the range 0-255.

the values are printed separated by commas. Discrete mixer values, e.g.,

If value can be set for each channel independently

the recording source, have symbolic names. Depending on the mixer it

the values are printed separated by commas.

Discrete mixer values, e.g.,

the recording source, have symbolic names.

Depending on the mixer it

may either be an enumeration or a set.

.Sh EXAMPLES

The command

.Pp

.Dl "mixerctl -a -v"

.Pp

can produce

.Bd -literal

inputs.mic=0,0 volume

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mixer audio device

.El

.Sh ENVIRONMENT

The following environment variables affect the execution of

.Nm mixerctl :

.Bl -tag -width MIXERDEVICE

.It Ev MIXERDEVICE

the mixer device to use.

The audio mixer device to use.

.El

.Sh SEE ALSO

.Xr audioctl 1 ,

.Xr audio 4 ,

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.Nm

command first appeared in

.Nx 1.3 .