Re: [MMUSIC] Comments on draft-pthatcher-mmusic-rid-00

Byron Campen <docfaraday@gmail.com> Thu, 08 October 2015 17:47 UTC

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Date: Thu, 8 Oct 2015 12:47:07 -0500
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From: Byron Campen <docfaraday@gmail.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>
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Subject: Re: [MMUSIC] Comments on draft-pthatcher-mmusic-rid-00
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On Mon, Oct 5, 2015 at 11:22 AM, Paul Kyzivat <pkyzivat@alum.mit.edu> wrote:

> * Section 10.*:
>
> The a=rid lines in most/all of the examples are inconsistent with the
> syntax. E.g. The following:
>
>    a=rid:1 send pt=*; max-width=1280; max-height=720; max-fps=30
>
> ought to be:
>
>    a=rid:1 send pt=* max-width=1280;max-height=720;max-fps=30
>
>
   Actually, it is worse than this; the grammar does not permit more than
one of "max-width", "max-height", etc. Also, the use of <param-val> (aka
<byte-string>) as the values of things like max-width precludes the use of
any delimiter, since param-val can contain anything except NUL, CR, and LF.
Things like max-width really should be a positive integer, so the grammar
will need to be tightened down. I'm guessing that what the author was
shooting for was ';' delimited, with positive integer values for everything
but depend=.

   Also, I would expect that stuff like pt=*,96,8,* is not permitted, but
the current grammar permits it.

Best regards,
Byron Campen