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_ULAWAUDIO_ENCODING_ALAWAUDIO_ENCODING_SLINEAR_BE- Natively supported.
AUDIO_ENCODING_SLINEAR- Software converted to
AUDIO_ENCODING_ULAWencoding. AUDIO_ENCODING_SLINEAR_LEAUDIO_ENCODING_ULINEAR_LEAUDIO_ENCODING_ULINEAR_BE- Software converted to
AUDIO_ENCODING_SLINEAR_BEencoding.
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.