Re: [Fwd: RE: Ogg Vorbis fixed-point math anyone ?]

That's great !
i had started to develop an ogg plugin for the mediaplayer but i
stopped when i figured out that i would have to do this dirty work ....
i might resume if i can get a hold of these libs !
Chris Larson wrote:

>Hello,
>
>Thought those involved in the Opie project might find this useful :-)
>
>-----Forwarded Message-----
>
>From: Dan Conti <danc_at_fullplaymedia.com>
>To: vorbis-dev_at_xiph.org, Gregor Hoffleit <gregor_at_hoffleit.de>, ipaq_at_handhelds.org
>Subject: RE: [vorbis-dev] Re: [iPAQ] Ogg Vorbis fixed-point math anyone ?
>Date: 20 Feb 2002 14:55:34 -0800
>
>Actually, we have a integerized version of the vorbis libraries that are
>available, royalty free, with a simple attribution requirement. These
>libraries are 100% C code and run faster than real time on a cirrus
>7312-74mhz processor (arm core). My guess is they should run at about
>20-30% cpu utilization on a strongarm/200. Monty has this same code, but
>his version doesn't play b4 content real time.
>
>For more information, feel free to contact me off-list.
>
>>-----Original Message-----
>>From: owner-vorbis-dev_at_xiph.org [mailto:owner-vorbis-dev_at_xiph.org]On
>>Behalf Of Ian Walters
>>Sent: Wednesday, February 20, 2002 2:33 PM
>>To: Gregor Hoffleit; ipaq_at_handhelds.org
>>Cc: vorbis-dev_at_xiph.org
>>Subject: [vorbis-dev] Re: [iPAQ] Ogg Vorbis fixed-point math anyone ?
>>
>>
>>Yes and no.
>>
>>I tried it but not seriously. I only went as far as floating point
>>emulation, not trying to understand the algorithms and turn them to
>>fixed-point/integer. I have been watching the ogg-vorbis
>>lists though, and
>>it would seem to be only one part of it that remains to be properly
>>integerized. Unfortunately from the sounds of things it
>>would take someone
>>who really knew what they were doing to transform that last
>>bit. I don't
>>remember what it was, just that when I Googled for the
>>definition what I
>>found made very little sense to me.
>>
>>The emulation proved insufficient as the quality was way,
>>way, way down. And
>>the normal floating point emulation (e.g. the automatic
>>stuff) wasn't fast
>>enough.
>>
>>Ian.
>>
>>On Thu, 21 Feb 2002 05:38 am, Gregor Hoffleit wrote:
>>
>>>A few months ago, there was some discussion about adding fixed-point
>>>support for iPAQ's StrongARM to Ogg Vorbis (whether and how it's
>>>possible, that is). Has anybody tried this yet ?
>>>
>>> Gregor
>>>_______________________________________________
>>>Open Source Software for Compaq iPAQ Handhelds.
>>>iPAQ mailing list
>>>iPAQ_at_handhelds.org
>>>http://handhelds.org/mailman/listinfo/ipaq
>>>irc://irc.openprojects.net #ipaq
>>>
>>--- >8 ----
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>>
>--
>Chris Larson, RHCE, LPIC-1, LCP - aka Kergoth
>kergoth at digitalnemesis dot net
>
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-- 
Charles-Edouard Ruault
PGP Key ID 4370AF2D