| From: | Oliver Roberts |
| Date: | 14 Dec 99 at 12:54:36 |
| Subject: | Re: [warpup] several questions about ... |
On 13-Dec-99 22:00:40 GMT, Steffen Haeuser wrote:
> Yes, P5 did a big bullshit around this asynchronous stuff... i would
> still need to SEE an application which actually profits of it... BTW:
Would this qualify... I'm currently writing a JPEG datatype for
PPC WarpUp. The PPC side decodes each line one at a time, and after
each line it calls the 68k side to do the PDTM_WRITEPIXELARRAY method.
I have implemented this in a double-buffering manner - i.e. the 68k side
can be writing the data into the bitmap, while the PPC side is decoding
the next a line of the image. I plan to do a similar thing with the file
i/o - i.e. the PPC side won't have to wait for DOS Read() to complete
before it carries on.
As yet, I haven't got the asynchronous version working properly, so I
can't compare the speed with that of the synchronous version that I
originally had :(