hdaudioctl(8) - NetBSD Manual Pages

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HDAUDIOCTL(8)           NetBSD System Manager's Manual           HDAUDIOCTL(8)


NAME

     hdaudioctl -- program to manipulate hdaudio(4) devices.


SYNOPSIS

     hdaudioctl [-f device] command [arguments]


DESCRIPTION

     The hdaudioctl command can be used to inspect and reconfigure High Defi-
     nition Audio devices and their child codecs.

     The mandatory command argument specifies the action to take.  Valid com-
     mands are:

     list               For each child codec of the chosen hdaudio(4) device,
                        display the nid, vendor, product, subsystem and device
                        IDs.

     get codecid nid    Retrieve and display the current codec configuration
                        as a proplib(3) XML plist.

     set codecid nid [plist]
                        Detach the specified hdafg(4) codec and then re-attach
                        with its widgets explicitly configured according to
                        the specified plist.  If no plist is given, the in-
                        built widget parsing rules based on the High Defini-
                        tion Audio specification will be used.

     graph codecid nid  Output a DOT file suitable processing by graphviz.
                        The resulting image will graphically show the struc-
                        ture and interconnections of the widgets that form the
                        chosen hdafg(4) codec.


FILES

     /dev/hdaudioX  control devices


SEE ALSO

     audio(4), hdaudio(4), pkgsrc/graphics/graphviz


HISTORY

     The hdaudioctl command first appeared in NetBSD 5.1.


AUTHORS

     hdaudioctl is based on two separate programs written by Jared McNeill
     <jmcneill@NetBSD.org> under contract by
     Precedence Technologies Ltd <http://www.precedence.co.uk/>.  Integration
     into one program and writing this manual page was done by
     Stephen Borrill <sborrill@NetBSD.org>.


CAVEATS

     When a plist is loaded and the hdafg(4) codec reattaches, all mixer con-
     trols will be returned to their default values.

NetBSD 6.1.1                    October 6, 2009                   NetBSD 6.1.1