Date: Wed, 16 Dec 2009 20:37:14 +0100 From: Hans Petter Selasky <hselasky@freebsd.org> To: freebsd-multimedia@freebsd.org, freebsd-usb@freebsd.org Subject: USB audio surround support Message-ID: <200912162037.16222.hselasky@freebsd.org>
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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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