Re: Video Overlay on C3200

On Wednesday 14 March 2007 14:01, Graeme Gregory wrote:
> On Wed, Mar 14, 2007 at 01:09:36PM +0000, Tim Chick wrote:
> > I've got iwwmxt working now. The video decode time for a 30 second
> > clip drops from 37 to 28 seconds. It should be easy enough to make
> > the iwmmxt stuff select itself at run time - indeed there is
> > already some code to do this, but I don't think it works quite
> > right.
> >
> > It still ends up being worse than cacko (24 seconds), which I think
> > may be due to the DMA load of using another overlay for OSD. I'm
> > going to take a look at disabling the overlay when it is not in use
> > sometime. Or use a lower depth (I'm using 16 bit at the mo).
>
> Does cacko still use mplayer-atty?
>
Yes.

> If so the extra speed is because it links in a proprietry lib from
> intel that does some of the mpeg 4 stuff in iwmmxt.

OK, I've just had a look. That probably explains the difference. When I 
first looked I thought it wasn't used very much (ipp), but it was late 
last night!

> A lot more than 
> the stock mplayer does.
>
> Because of the license from Intel I couldnt put this lib in OE.
>
> Ill try and update OE with your newest code tonight.
>
OK, and I'll try and get a run time check working for IWMMXT, so that 
can be included in all mplayer builds (or maybe just armv5tel ones). 
The drop from 37 to 28 seconds is pretty good!

Thanks,
Tim


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