| From: | Steffen Haeuser |
| Date: | 14 Dec 99 at 20:56:17 |
| Subject: | Re: [warpup] several questions about ... |
owner-warpup-list@haage-partner.com wrote :
Hi!
ow> Would this qualify... I'm currently writing a JPEG datatype for
ow> PPC WarpUp. The PPC side decodes each line one at a time, and after
ow> each line it calls the 68k side to do the PDTM_WRITEPIXELARRAY method.
ow> I have implemented this in a double-buffering manner - i.e. the 68k side
ow> can be writing the data into the bitmap, while the PPC side is decoding
ow> the next a line of the image. I plan to do a similar thing with the file
ow> i/o - i.e. the PPC side won't have to wait for DOS Read() to complete
ow> before it carries on.
ow> As yet, I haven't got the asynchronous version working properly, so I
ow> can't compare the speed with that of the synchronous version that I
ow> originally had :(
Well, wenn you have, tell us the results :) If there is any advantage in it...
but remember... make it optional... future PPC Boards won't have a 68k...
Steffen Haeuser