1 .\" $NetBSD: uaudio.4,v 1.15 2002/02/12 19:53:57 jdolecek Exp $
3 .\" Copyright (c) 1999 The NetBSD Foundation, Inc.
4 .\" All rights reserved.
6 .\" This code is derived from software contributed to The NetBSD Foundation
7 .\" by Lennart Augustsson.
9 .\" Redistribution and use in source and binary forms, with or without
10 .\" modification, are permitted provided that the following conditions
12 .\" 1. Redistributions of source code must retain the above copyright
13 .\" notice, this list of conditions and the following disclaimer.
14 .\" 2. Redistributions in binary form must reproduce the above copyright
15 .\" notice, this list of conditions and the following disclaimer in the
16 .\" documentation and/or other materials provided with the distribution.
18 .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 .\" POSSIBILITY OF SUCH DAMAGE.
30 .\" $FreeBSD: head/share/man/man4/snd_uaudio.4 267938 2014-06-26 21:46:14Z bapt $
37 .Nd USB audio and MIDI device driver
39 To compile this driver into the kernel, place the following lines in your
40 kernel configuration file:
41 .Bd -ragged -offset indent
44 .Cd "device snd_uaudio"
47 Alternatively, to load the driver as a module at boot time, place the
50 .Bd -literal -offset indent
56 driver provides support for
58 audio class devices and
64 audio device consists of a number of components:
65 input terminals (e.g.\& USB digital input), output terminals (e.g.\&
66 speakers), and a number of units in between (e.g.\& volume control).
69 .Ql USB Audio Class Specification
75 .%T "USB Audio Class Specifications"
76 .%U http://www.usb.org/developers/devclass_docs/
81 driver first appeared in
84 This manual page was adopted from
89 .An Hiten Pandya Aq Mt hmp@FreeBSD.org .
95 as of this writing, does not handle device un-registrations in a properly
96 abstracted manner, i.e., a detach request is refused by the
98 framework if the device is in use.
99 It is necessary to allow the device un-registration to complete
100 successfully, otherwise the