ARCOFI(4) - Device Drivers Manual #

ARCOFI(4) - Device Drivers Manual

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 #

ioctl(2), audio(4), gsc(4), intro(4), audioctl(8), mixerctl(8)

HISTORY #

OpenBSD support for arcofi first appeared in OpenBSD 5.1.

OpenBSD 7.5 - April 22, 2020