USB audio surround support
Hans Petter Selasky
hselasky at freebsd.org
Wed Dec 16 19:35:22 UTC 2009
Hi,
There are patches now in the the USB P4 repository that enables support for
more than 2 audio channels:
uaudio0: <XXXXXXXXXXXXXXX, class 0/0, rev 1.10/0.10, addr 2> on usbus0
uaudio0: Play: 48000 Hz, 8 ch, 16-bit S-LE PCM format
uaudio0: Record: 48000 Hz, 2 ch, 16-bit S-LE PCM format
uaudio0: No midi sequencer
For FULL speed devices this feature is disabled by default due to high
bandwidth usage:
use:
sysctl hw.usb.uaudio.default_channels=16
or
echo "hw.usb.uaudio.default_channels=16" >> /boot/loader.conf
To override.
Reference:
http://p4web.freebsd.org/chv.cgi?CH=171845
--HPS
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