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Re: Adaptive images

From: Karl Dubost <karld@opera.com>
Date: Tue, 31 May 2011 06:51:43 -0400
Message-Id: <D4E58503-57E2-452D-8A5A-B04C7616B41C@opera.com>
Cc: public-html@w3.org
To: Henri Sivonen <hsivonen@iki.fi>
Cf Content negotiation of images quality based on HTTP [1]

Le 31 mai 2011 à 06:23, Henri Sivonen a écrit :
> There's an expired ID for that:
> http://tools.ietf.org/html/draft-mutz-http-attributes-01


Some mobile devices are currently using CC/PP [2][3], but I have no idea how widely it is used and it might be less obvious than HTTP headers. There is a trade-off. The issue is to find a mechanism in which the information is on the device side to be trusted. (hear go away with user agent sniffing: #sniffkill)

From the Mutz draft.

UA-pix-x= <n>
UA-pix-y= <m>

   The display size of the client's device is transmitted in total
   horizontal <n> and vertical <m> pixel number, for example: UA-pix-
   x=1024, UA-pix-y=768.  The intent is to present and allow the
   selection of the resource variants best suited to a client's device.

The draft has a reference to "Transparent Content Negotiation in HTTP" 6.1 Feature tags [4] RFC2295



[1]: http://www.w3.org/mid/5739036C-D7F2-4142-A3EB-33653AFEB038@charlvn.com
[2]: http://www.w3.org/TR/CCPP-struct-vocab/
[3]: http://jcp.org/en/jsr/detail?id=188
[4]: http://tools.ietf.org/html/rfc2295#section-6.1 

-- 
Karl Dubost - http://dev.opera.com/
Developer Relations & Tools, Opera Software
Received on Tuesday, 31 May 2011 10:52:21 UTC

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