Re: [Linphone-developers] android video on NVIDIA tegra

[Martin Hörlin]

Hello,

Any progress on getting video working on NVIDIA Tegra?
I have a Samsung Tab 10.1' and could help with some testing if needed.

Best Regards
Martin

Jehan Monnier skrev 2011-07-06 10:17:
> Hi,
>
> Le 20 juin 2011 à 20:51, Jesse Pfeister a écrit :
>
> > Greetings. I am working on getting linphone video working on the NVIDIA Tegra 
> > processor. Here is a summary of what I have found so far:
> >
> > 1. Tegra is armv7-a but does not support optional NEON SIMD instructions.
> >
> > 2. Linphone's code has lots of neon specific goodies written into it (which 
> > means compiling the current implementation of linphone for Tegra is impossible)
> Not a lot actually, only in scaler.c and msresampler.c.
> > 3. A guy used an old video codec (H263-1998) to get video working in the 
> > ddPhoneVideo/smsVideo apps
> >
> > Are there any resources regarding adding codecs to linphone? I've been browsing 
> > docs and mailing lists to no avail.
> Have a look to videoenc.c.
> > What I suspect after reading the code: NEON is in the anatomy of linphone's 
> > video system and cannot easily be replaced by a simple codec switch.
> You are too pessimistic, have a look to msresampler.c, you can see that neon 
> code is deactivate at runtime. You just have to perform the same on scaler.c
>
> > Thanks for any help you can provide.
> Cheers
>
> > (And yes, I know the real solution is to target a non-Tegra platform :-P )
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>
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