[Speex-dev] speex dsp as a gstreamer plugin

Eduardo Bezerra edubezval at gmail.com
Mon Jan 16 10:15:28 PST 2006


   I'm porting speex as a DSP task to run using the DSP gateway project.
I have some results, but I still need some improments, because I'm still getting
some error messages in the mail box system... If someone wants to
help... it would
be useful.

2006/1/16, Ralph Giles <giles at xiph.org>:
> On Mon, Jan 16, 2006 at 04:43:56PM +0100, Christophe Augier wrote:
> > i'm not an expert in dsp but i've seen there is some code to run speex
> > on omap C5X dsp so i was wondering what is the status of this code.
> > Actually my goal is to run a voip application which uses gstreamer on
> > an OMAP 5912 board. As there is already a speex codec for gstreamer, i
> > was wondering if this plugin can already use the dsp power or if there
> > is the need for a new plugin.
> People have ported it to the TI C5x dsp, and at least some of the
> changes have been merged into the development tree. Check the list
> archives for details.
> However, AFAIK those were straight ports. To run on the omap, with
> gstreamer itself presumedly running on the ARM side will require some
> code changes. Basically you have to compile the speex codec as a
> separate module to load into the DSP and then modify the speex plugin
> to send it buffers instead of doing the decode directly.
> I guess that could be done either as a from-scratch plugin or as a
> modification, depending on your programming style.
> If you get this working and can release the source, I'd really like
> to see it. Would be wonderful to have DSP speex running on my Nokia 770.
> HTH,
>  -r
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Eduardo Bezerra Valentin
Bacharelado em Ciência da Computação - DCC - UFAM
Laboratório de VoIP - GRSD - UFAM

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