mixerctl(1) [netbsd man page]

MIXERCTL(1)						    BSD General Commands Manual 					       MIXERCTL(1)

NAME

     mixerctl -- control audio mixing

SYNOPSIS

     mixerctl [-d file] [-n] [-v] -a
     mixerctl [-d file] [-n] [-v] name ...
     mixerctl [-d file] [-n] -w name=value ...
     mixerctl [-d file] [-n] -w name++ ...
     mixerctl [-d file] [-n] -w name-- ...
     mixerctl [-d file] [-n] -w name+=value ...
     mixerctl [-d file] [-n] -w name-=value ...

DESCRIPTION

     The mixerctl command displays or sets various audio system mixing variables.  If a list of variables is present on the command line, then
     mixerctl prints the current value of those variables for the specified device.  If the -a flag is specified, all variables for the device are
     printed.  If the -w flag is specified, mixerctl attempts to set the specified variables to the given values.

     The -d flag can be used to give an alternative mixer device.  The default is /dev/mixer.

     The -n flag suppresses printing of the variable name.

     The -v flag shows the possible values of enumeration and set valued variables.  Enumerated values are shown in brackets (``[]'') and set val-
     ues are shown in curly braces (``{}'').

     The exact set of controls that can be manipulated depends on the mixer.  The general format (in both getting and setting a value) is
     class.name = value
     class can have values like inputs or outputs, indicating that the control affects the input or output of the mixer, respectively.	name indi-
     cates 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, 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.

     The suffixes ++ and -- can be used to step through the values of a mixer control.	For numeric controls, these operators increase or
     decrease, respectively, the value by an amount (the delta) suitable to make the control assume the next possible value.  For binary controls,
     these operators toggle between on and off.

     The operators += and -= change the value of a mixer control by the indicated number of steps.

ENVIRONMENT

     MIXERDEVICE  the mixer device to use.

FILES

     /dev/mixer 	 mixer audio device
     /etc/mixerctl.conf  mixer configuration file

EXAMPLES

     The command
	   mixerctl -a -v
     can produce

     inputs.mic=0,0 volume
     inputs.mic.mute=off  [ off on ]
     inputs.cd=220,220 volume
     inputs.cd.mute=off  [ off on ]
     inputs.dac=220,220 volume
     inputs.dac.mute=off  [ off on ]
     record.record=220,220 volume
     record.record.source=mic  [ mic cd dac ]
     monitor.monitor=0 volume

COMPATIBILITY

     The old -f flag is still supported.  This support will be removed eventually.

SEE ALSO

     audioctl(1), audio(4), mixerctl.conf(5), sysctl(8)

HISTORY

     The mixerctl command first appeared in NetBSD 1.3.

BSD
								  August 15, 2008							       BSD

mixerctl(1)                                                        User Commands                                                       mixerctl(1)

NAME

       mixerctl - audio mixer control command line application

SYNOPSIS

       /usr/sbin/mixerctl [-a | -d dev]  [-iv] [-e | -o]

DESCRIPTION

       Some audio devices support the audio mixer functionality. See mixer(7I) for a complete description of the audio mixer. The mixerctl command
       is used to control the mode of the audio mixer and to get information about the audio  mixer  and  the  audio  device.  See  audio(7I)  for
       details.

OPTIONS

       The following options are supported. If none are specified, option -i is assumed:

       -a              The command applies to all audio devices.

       -d dev          The dev argument specifies an alternate audio control device for the command to use.

       -e              Enables the audio mixer function if the audio device supports it. If supported, the audio mixer may be enabled at any time.
                       The command silently ignores the enable option if the audio mixer is already enabled.

       -i              Prints the audio device type information for the device and indicates whether the audio device uses the audio mixer. If the
                       device does use the audio mixer, this option displays the audio mixer's mode.

       -o              Turns off the audio mixer function if the audio device supports it. If supported, the audio mixer may be turned off if only
                       one process has the device opened with the O_RDWR flag, or, if two different processes have the device opened, one with the
                       O_RDONLY  flag  and the other with the O_WRONLY flag. (See open(2).) The command silently ignores the disable option if the
                       audio mixer function is already disabled.

       -v              Verbose mode. Prints the audio_info_t structure for the device, along with the device type information. This option implies
                       the -i option.

ENVIRONMENT VARIABLES

       AUDIODEV        If  the  -d and -a options are not specified, the AUDIODEV environment variable is consulted. If set, AUDIODEV will contain
                       the full path name of the user's default audio device. The default audio device will be converted into  a  control  device,
                       and then used. If the AUDIODEV variable is not set, /dev/audioctl is used.

FILES

       /dev/audioctl

       /dev/sound/{0...n}ctl

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Architecture                 |SPARC, x86                   |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWauda                     |
       +-----------------------------+-----------------------------+
       |Stability Level              |Evolving                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       audioconvert(1), audioplay(1), audiorecord(1), open(2), attributes(5), usb_ac(7D), audio(7I), audio_support(7I), mixer(7I)

SunOS 5.10                                                          12 Mar 2001                                                        mixerctl(1)