Date: Mon, 14 Jul 2008 20:20:07 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Martin Laabs <martin.laabs@mailbox.tu-dresden.de> Cc: freebsd-ports-bugs@FreeBSD.org Subject: Re: ports/125542: audio/oss does not return propper SNDCTL_DSP_GETBLKSIZE size Message-ID: <200807142020.09115.jkim@FreeBSD.org> In-Reply-To: <200807121600.m6CG0Hl1017996@freefall.freebsd.org> References: <200807121600.m6CG0Hl1017996@freefall.freebsd.org>
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This is one of the incompatibilities between FreeBSD vs. OSS API.
soundcard.h from FreeBSD:
#define SNDCTL_DSP_GETBLKSIZE _IOR('P', 4, int)
soundcard.h from OSS:
#define SNDCTL_DSP_GETBLKSIZE __SIOWR('P', 4, int)
Note FreeBSD version is read-only and OSS version is not. It seems
OSS version is wrong but it is an obsolete API:
http://manuals.opensound.com/developer/SNDCTL_DSP_GETBLKSIZE.html
You have two choices here. Compile your appliacations with
include/soundcard.h from OSS distribution or use
SNDCTL_DSP_GET[IO]SPACE as recommeneded in the manual. The latter is
obviously better choice and there is no incompatibility between the
two versions.
Jung-uk Kim
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