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Date:      Sun, 10 Dec 1995 11:14:20 PST
From:      Ron Frederick <frederic@parc.xerox.com>
To:        Luigi Rizzo <luigi@labinfo.iet.unipi.it>
Cc:        multimedia@star-gate.com, hackers@freebsd.org
Subject:   Re: nv and cuseeme mode 
Message-ID:  <95Dec10.111427pst.16136@ecco.parc.xerox.com>
In-Reply-To: Your message of "Sun, 10 Dec 95 10:37:50 PST." <199512101837.TAA03070@labinfo.iet.unipi.it> 

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In message <199512101837.TAA03070@labinfo.iet.unipi.it> you write:
> Right. What I did was to modify the "meteor_grab.c" sources to always
> return a NTSC geometry. Cropping within nv is probably more portable.
> 
Since the other compression modes (which are much nicer, anyway) support the
full PAL resolution, you probably don't want to throw away anything in the
grabber...

> BTW, is CUSeeme black&white only ?
> 
Yes -- with only 16 grey levels, in fact. I put in the hooks for CUSeeMe to
allow nv users to watch some CUSeeMe conferences that were being reflected
onto the MBONE a few years ago. I later added the encoder support when it
looked like CUSeeMe might start supporting multicast & RTP. However, that
hasn't happened in the way I expected, so the encoder isn't really all that
interesting.

> Thanks for the patches. One comment, the large tables used in the
> code *might* be initialized at run time depending on the endiannes
> of the system. Probably easier to maintain.
> 
I considered that, and it would be fairly easy to create them at startup.
However, they were first supplied to me in precomputed form, and it doesn't
take much space to leave them that way...
--
Ron Frederick
frederick@parc.xerox.com



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