.\"	$OpenBSD: ossaudio.3,v 1.10 2008/06/26 05:42:05 ray Exp $
.\"	$NetBSD: ossaudio.3,v 1.12 2001/05/19 17:23:39 jdolecek Exp $
.\"
.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Lennart Augustsson,
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\"
.Dd $Mdocdate: June 26 2008 $
.Dt OSSAUDIO 3
.Os
.Sh NAME
.Nm ossaudio
.Nd OSS audio emulation
.Sh LIBRARY
.Nm -lossaudio
.Sh SYNOPSIS
.Fd #include <soundcard.h>
.Sh DESCRIPTION
The
.Nm
library provides an emulation of the OSS (Linux) audio
interface.
.Pp
Use the native interface for new programs and the emulation
library only for porting programs.
.Sh SEE ALSO
.Xr audio 4
.Sh HISTORY
The
.Nm
library first appeared in
.Nx 1.3 .
.Sh BUGS
The emulation uses a #define for
.Fn ioctl
so some obscure programs
can fail to compile.
.Pp
The emulation is incomplete.
.Pp
The emulation only covers
.Fn ioctl ,
there are other differences as well.
E.g., on a write that would block in non-blocking mode Linux returns
.Dv EINTR
whereas
.Ox
returns
.Dv EAGAIN .