[Libdlo] Basic PNG and SVG display

[Roberto De Ioris]

On Thu, 2009-05-21 at 20:40 +0100, Phil Endecott wrote:
> Hi,
> 

> 
> However, if we get a kernel framebuffer driver (as Roberto promises) 
> then a user-space utility like this seems of little use.  There are 
> probably already dozens of programs that can render graphics into a 
> framebuffer device. 



Yes, actually if you launch (for example)

mplayer -vo fbdev:/dev/fb1 <videofilename>

and send the ioctl to the device you will see the current output

>  Actually the more I think about it the more I 
> believe that a kernel framebuffer driver is the right solution for this 
> sort of thing.  The only disadvantage is that it needs a full screen's 
> worth of RAM, which might be a bit excessive on an embedded device like 
> a router.  (Well, unless you have only N pages mapped to RAM, and if 
> the code touches page N+1 you flush the least-recently-used page to the 
> screen and re-use it.  That would obviously work better for some 
> patterns of access than others.  Roberto, have you considered something 
> like this?)

yes i have considered this problem, probably i will follow this way in
the next release.

I am ready to release the first prototype version of dlfb, (for now
called udlfb as its very ugly ;) )

-- 
Roberto De Ioris
http://unbit.it
JID: roberto at jabber.unbit.it