ARCOFI(4)

NAME
arcofi - Siemens PSB2160 audio codec

SYNOPSIS
arcofi* at dio?
audio* at audiobus?

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 phone-quality mono, 8000 Hz sound.

  AUDIOCTL SETTINGS
The following encodings are supported:

AUDIO_ENCODING_ULAW
AUDIO_ENCODING_ALAW
AUDIO_ENCODING_SLINEAR_BE
    Natively supported.

AUDIO_ENCODING_SLINEAR
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.speaker
    The built-in speaker.

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

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

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

HISTORY
The arcofi driver was written for OpenBSD and first appeared in OpenBSD 5.1, and was ported to NetBSD.