[vorbis-dev] How many MIPS for Vorbis Decoder?

guillaume roget
Sun, 21 Mar 2004 10:46:00 -0000

Hello
My project is to encode an audio signal with a DSP Texas Instruments
TMS320DM642 and store the encoded file in a PCMCIA card.
I would want to know if that it is possible to implemente the code source of
the encoder OGG VORBIs in the DSP.
I am beginner, so understand me.
I have an other question: In OGG VORBIS Win 32, I want that "stdin"
corresponds to my sound card input (Micro)  and that the
"stdout"corresponds
to my sound card output(loudspeakers) because I want to do measures of  OGG
vOrBIs performances with a MLSSA card(audio analysis card). How can I do
that?
Many thanks
Guillaume

>From: Mike S
<wickedchicken@plasticpenguins.com>
>Reply-To: vorbis-dev@xiph.org
>To: vorbis-dev@xiph.org
>Subject: Re: [vorbis-dev] How many MIPS for Vorbis Decoder?
>Date: Sun, 21 Mar 2004 09:45:05 -0500
>
>John Ripley wrote:
>
>>I don't know much about the "ultra low cost" market. The
only stuff I've
>>really played with is targetted for MP3 players in the first place, and
>>those are at least several times faster than the MSP430. It's
usually just
>>a
>>case of optimisation to get Vorbis to fit and run real time on them. For
>>arcane low power / low cost DSP architectures, it might be a case of
never
>>fitting or running real time.
>>
>
>
>I myself am looking around at building something similar. My idea (and I
>don't know how far-fetched it is) is to take an unused portable CD
player I
>have, and 'intercept' the data line that goes into the DSP. Thus, I
would
>write an ogg stream onto each track of a cd. When the data comes across the
>line, the ogg vorbis hardware would decode it and send it to the dsp to be
>played. Obviously I would have to deal with CD speed and buffering issues,
>but I think it has a chance of working. Since this would be a one-of-a-kind
>device (and just a hobby) I was looking for something cheap and easy to
>work with. Someone mentioned an XScale dev board, so maybe I'll take a
look
>at that.
>
>This doesn't suit my needs, but would something like this, running linux
>and with an audio card attached work for the other guy?
>
>http://www.soekris.com/net4501.htm
>--
>
>~Mike
>wickedchicken@plasticpenguins.com
>
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