From: "Daniel Glöckner" <dg@emlix.com>
To: Christian Wolf <wolflpz@web.de>
Cc: Alex Austin <circuitsoft.alex@gmail.com>, alsa-devel@alsa-project.org
Subject: Re: ALSA SDL VORBIS playback problem
Date: Tue, 02 Mar 2010 21:03:14 +0100 [thread overview]
Message-ID: <4B8D6F02.1060608@emlix.com> (raw)
In-Reply-To: <53baa24a1003021109xe1c76dekc7f390a2a851df28@mail.gmail.com>
On 03/02/2010 08:09 PM, Alex Austin wrote:
> Basically, see if a straight-up pipe will buffer reasonably. If not, I
> suppose it's remotely possible that this is just a CPU-bound operation and
> it can't keep up. I can't imagine that's really the case though with that
> CPU.
Libvorbis uses floating point operations while on your AT91SAM9261 you
have a soft-float library (or even worse FPU emulation).
Try the integer only Tremor library linked here:
http://www.xiph.org/vorbis/
The API is slightly different (easier), as it can only generate S16_LE
samples.
Daniel
--
Dipl.-Math. Daniel Glöckner, emlix GmbH, http://www.emlix.com
Fon +49 551 30664-0, Fax -11, Bahnhofsallee 1b, 37081 Göttingen, Germany
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next prev parent reply other threads:[~2010-03-02 20:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-02 17:50 ALSA SDL VORBIS playback problem Christian Wolf
2010-03-02 19:09 ` Alex Austin
2010-03-02 20:03 ` Daniel Glöckner [this message]
2010-03-09 18:00 ` Christian Wolf
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