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ARCOFI(4)                BSD Kernel Interfaces Manual                ARCOFI(4)

NAME
     arcofi -- Siemens PSB2160 audio codec

SYNOPSIS
     arcofi* at gsc?
     audio*  at arcofi?

DESCRIPTION
     The arcofi driver supports the HP ``Audio1'' audio devices, based upon
     the Siemens PSB2160 ``ARCOFI'' codec, to implement the audio device
     interface described in audio(4).

     This device is found onboard HP 9000 workstations models 425e, 705 and
     710.

     The arcofi is limited to a mono, 8000 KHz sound, either with 8-bit phone-
     quality mu-law or a-law samples, or 16-bit signed linear samples in big-
     endian byte order.

   AUDIOCTL SETTINGS
     The following encodings are supported:

           AUDIO_ENCODING_ULAW
           AUDIO_ENCODING_ALAW
           AUDIO_ENCODING_SLINEAR_BE  Natively supported.

           AUDIO_ENCODING_SLINEAR     Software converted to
                                      AUDIO_ENCODING_ULAW encoding.

           AUDIO_ENCODING_SLINEAR_LE
           AUDIO_ENCODING_ULINEAR_LE
           AUDIO_ENCODING_ULINEAR_BE  Software converted to
                                      AUDIO_ENCODING_SLINEAR_BE encoding.

   MIXERCTL SETTINGS
     The arcofi has three audio ports:

           inputs.line      The 'line in' jack connector.
           outputs.line     The 'line out' jack connector.
           outputs.spkr     The built-in speaker.

     Each port has a volume control, and can be muted.

     The outputs.line and outputs.spkr volume settings are tied to the same
     hardware setting.

SEE ALSO
     audioctl(1), mixerctl(1), ioctl(2), audio(4), gsc(4), intro(4)

HISTORY
     OpenBSD support for arcofi first appeared in OpenBSD 5.1.

BSD                             April 22, 2014                             BSD