[maemo-developers] Wishlist (was:Re: N800 and USB host mode)

From: Daniel Stone daniel.stone at nokia.com
Date: Wed Mar 7 22:18:01 EET 2007
On Wed, Mar 07, 2007 at 05:50:26PM -0000, ext Simon Pickering wrote:
> Wish #2:
> I'd like support for the IVA (Imaging Video Accelerator) device to be
> implemented, or at least for some more information to be made available if Nokia
> can't justify the time.
> Rationale: 
> This hardware is supposed to be able to improve large image display and can VGA
> decoding at up to 30fps. And again, it's just sat there.

Right now, the biggest bottleneck in video decoding is RFBI bandwidth
(i.e. the bus between OMAP and the LCD controller we use), being too
slow to push more than ~15fps through at 800x480.  Beefing up the
processor-side decoding doesn't help.  We've been working on this and
the next firmware update will give you significantly faster video (with
a couple of caveats).

So it's mostly just down to the large image display, which more or less
suffers from the same problem.  I don't think it would give us much
benefit at all.

As for PowerVR stuff, we're certainly well aware of that internally.

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