[theora] Optimised ARM Ogg/Theora/Vorbis decoder

Zik Zak zikzakfr at gmail.com
Thu Sep 17 04:54:20 PDT 2009

On Thu, Sep 17, 2009 at 10:21 AM, Robin Watts <theora at wss.co.uk> wrote:

> This is a note to announce the availability of "Ogg Theorarm", an
> optimised ARM implementation of decoding libraries for the Theora
> video code, and Vorbis audio codec from xiph.org.
> Full details of this code release can be found at
> <http://www.wss.co.uk/pinknoise/theorarm>, but highlights include:
>  * Full speed playback of a 320x240x25fps clip with a 48kHz stereo
> audio track on an 416Mhz Xscale based wince device. (39fps if audio
> sync is sacrificed).
>  * With post processing (deblocking/deringing) enabled, this drops to
> 23fps.
>  * Uses no hardware acceleration features (e.g. dithered YUV2RGB is
> done in software, so on devices with such features available, it
> could go even faster).
>  * Uses ARMv4 instructions only (no reliance on Xscale SIMD or
> ARMv5/v6/v7/NEON).
>  * Compatible with films encoded with the latest encoder versions.
> For more information, see the website above, or contact me.
> Robin

Whoa ! That sounds excellent !
With all those portable multimedia players out there it will be perfect.
Do you think a player compatible with the Android platform could be done
easily ?

Congratulations !

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