| From: | Oliver Roberts |
| Date: | 18 Dec 99 at 02:01:37 |
| Subject: | Re: [warpup] several questions about ... |
On 14-Dec-99 19:56:17 GMT, Steffen Haeuser wrote:
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
ow>> side can be writing the data into the bitmap, while the PPC side is
ow>> decoding the next a line of the image. I plan to do a similar thing
ow>> with the file i/o - i.e. the PPC side won't have to wait for DOS
ow>> Read() to complete before it carries on.
> 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...
Hmmm... so far, I have found the asynchronous approach to be ever so
slightly *slower*, in the above situation! Go figure :) Looks like
you are right.