In message <Pine.OSF.4.20.0010031456570.2147-100000@...>
Anders M Montonen <ammonton@...> wrote:
> On Mon, 2 Oct 2000, Vince VE wrote:
>
> <snip>
> > Anyways, that's what I had to say about image compression, I hope it
> > gave you ideas or info that helped you or motivated you.
>
> Well, if you're looking for a technical challenge, at
> http://www.ffd2.com/fridge/chacking/c=hacking19.txt you'll find the
> description (and a link to the source) of a JPEG decoder for an unexpanded
> C64. Probably very impractical for "real" use, but for hack value you
> might try implementing JPEGs on the Gameboy.
Hm, since this is a gba mailing list, i assume you are talking about
the gameboy advance which shouldn't have much of a problem decoding
jpegs. I have just written a decoder in arm asm which should decode a
240x160 jpeg to 15bit color in about 0.5-1 seconds on an 16mhz arm.
This should already be good enough for some uses but i'm aware that
it is possible to get the decoder to always take less than half a
second. (the dct code uses currently the simplest implementation which
takes up to 64 muls per pixel...)
--
exoticorn/icebird