[opus] How to negotiate 'Opus/Celt only'?

[Fredrik Bonde]

Thank you Gregory. I'll forward your answer to our people and they will have a look.

Best regards
Fredrik Bonde

-----Original Message-----
From: Gregory Maxwell [mailto:gmaxwell at gmail.com] 
Sent: den 14 november 2013 10:19
To: Fredrik Bonde
Cc: opus at xiph.org
Subject: Re: [opus] How to negotiate 'Opus/Celt only'?

On Thu, Nov 14, 2013 at 12:51 AM, Fredrik Bonde <Fredrik.Bonde at ascom.se> wrote:
> 1.            Is it possible to via SDP force the remote party to send a
> specific mode of the 32 different possible modes or to force the 
> remote side to use CELT only?

No, and if you cannot decode opus completely (all modes) your device is not conformant with the Opus specification.

I'm confused about the MIPS limitation though. The LPC mode decoder is _much_ faster than the MDCT mode decoder. Can you explain more about this?