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  dev-
           ice  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  attri-
     butes:

     ____________________________________________________________
    |       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)