Dear All,

I have been playing around with the djpeg program (a trivial wrapper 
around libjpeg for decoding) and there is a performance difference of 
about 25% between the defaults and the fastest settings, with no 
noticeable difference in the output (to my eye - no doubt there are 
cases where it can be seen).

I'm therefore considering adding some flags to DirectFB so that the 
JPEG provider can be used in different fast/slow modes.  Any comments?

I've also noticed that djpeg runs about 15% faster if compiled with -Os 
rather than -O4.


Regards,

Phil.





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