[Libdlo] DirectFB support?

Phil Endecott spam_from_libdlo at chezphil.org
Tue Dec 21 12:54:31 PST 2010

Hi Tim,

Tim Stowell wrote:
> My main use case at this point is trying to find the fastest way to
> get an image on the udlfb screen. I've tried the following (this is on
> a very slow Soekris net4801 266mhz processor attempting to display a
> jpeg)

266 MHz is NOT "very slow"!

> My next question is assuming I have access to the image data, what is
> the fastest way to display it with udlfb, mmap?

Do you need to use udlfb?  Your fastest option on a CPU-limited system 
will probably be to use as few software layers as possible between you 
and the hardware.  I suggest using libdlo and libjpeg to do everything 
in user-space.  I posted some code to do this for SVG here:  
http://lists.freedesktop.org/archives/libdlo/2009-May/000060.html - you 
could do something similar using libjpeg.

(How large are your jpegs?  Are you scaling them, or anything like that?)

Regards,  Phil.

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