Date: Sun, 31 Jul 2005 19:21:13 +0200 From: Alexander Leidinger <netchild@FreeBSD.org> To: Sam Leffler <sam@errno.com> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/sound/pcm buffer.c channel.c dsp.c fake.c feeder_fmt.c feeder_rate.c sound.h vchan.c Message-ID: <20050731192113.5746217a@Magellan.Leidinger.net> In-Reply-To: <42ED055E.90803@errno.com> References: <200507311616.j6VGGM4W079108@repoman.freebsd.org> <42ED055E.90803@errno.com>
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On Sun, 31 Jul 2005 10:07:42 -0700
Sam Leffler <sam@errno.com> wrote:
> Alexander Leidinger wrote:
>
> > * The arrival of 24/32 also come with a price. Applications
> > that can do 24/32bit playback need to be recompiled (notably
> > mplayer). Use (recompiled) mplayer to experiment / test /
> > debug this various format using -af format=fmt. Note that
> > 24bit seeking in mplayer is a little bit broken, sometimes
> > can cause silence or loud static noise. Pausing / seeking
> > few times can solve this problem.
> > You don't have to rebuild world entirely for this. Simply
> > copy /usr/src/sys/sys/soundcard.h to
> > /usr/include/sys/soundcard.h would suffice. Few drivers also
> > need recompilation, and this can be done via
> > /usr/src/sys/modules/sound/.
>
> Bump FreeBSD version?
I'm not sure (does not knowing it imply that I have to?). soundcard.h
contains new defines. If an app/port finds those new defines it knows
that the new feature is there. I think this should cover at least 99%
of the cases. Does someone think this doesn't cover 100%?
As for runtime issues: /dev/dsp will return an error if an app wants to
use an usupported format. Every app should be able to handle it (else
you may have a problem when you get a new soundcard which doesn't
supports what the previous one supported).
Bye,
Alexander.
--
"One world, one web, one program" -- Microsoft promotional ad
"Ein Volk, ein Reich, ein Fuehrer" -- Adolf Hitler
http://www.Leidinger.net Alexander @ Leidinger.net
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