Re: Mirror "module" for framebuffer

[Daniele Salvatore Albano <info@daccii.it>]

Il 01/06/2011 22:02, Bruno Prémont ha scritto:
> Hi,
>
> [re-adding linux-fbdev, please make sure to reply-to-all]

uops

 > Note that some framebuffer drivers might implement (lots) of private
 > ioctls to implement (accelerated) drawing primitives.
 > So unless you know the driver you are hooking onto all bets are open.
.
.
.
> No, only a few selected ones implement deferred input/output, usually
> because the real framebuffer cannot be mapped into memory or the link
> to it is just dead slow so changes are pushed down to device at regular
> intervals.
.
.
.
> I'm wondering if you not better had to create a new framebuffer driver
> (based on virtual framebuffer) with fbdefio to push the changes to a
> backing framebuffer [the way fbcon draws console] (as well as whatever you
> use to stream to the remote system).
> This will make you lose any potential hardware acceleration but keep
> things simple.
> Though you would need ability to move software to your new framebuffer.

Main problem is that i need to show what is being displayed on the 
screen, so i can't use another framebuffer device but i must use the one 
used by the os.

mmm i think that isin't the right way to handle this situation because 
this software should work with too much different (and untestable) hardware.
I'll see if there is a way to check when android draw something on the 
framebuffer

Thanks a lot for your time!


Best Regards,
Daniele
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