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Re: SVGt 1.2 Sect 12.3.1: Video transform requirements

From: Jean-Claude Dufourd <jean-claude.dufourd@streamezzo.com>
Date: Thu, 16 Aug 2007 14:10:35 +0200
Message-ID: <46C43EBB.4090804@streamezzo.com>
To: Kalle Raita <kraita@nvidia.com>
CC: www-svg@w3.org
Hi

The intention of the transformBehavior proponent (me) and what I 
understood to be the decision of the WG is "the feature string signals 
the value "geometric" is usable; all other values are always present".
Best regards
JC

Kalle Raita wrote:
> Dear expert group,
>  
> Based on the SVGt 1.2 specification section 12.3.1, I'm unable to 
> determine if a conformant viewer must always support values 
> "pinned90", "pinned180", and "pinned270" for the transformBehaviour 
> attribute.
>  
> In 12.3..1 it's said:
> "... SVGT 1.2 introduces the transformBehavior attribute and a 
> corresponding feature string: 
> http://www.w3.org/Graphics/SVG/feature/1.2/#TransformedVideo 
> <http://www.w3.org/TR/SVGMobile12/feature.html#TransformedVideo>"
> The conclusion would be that the feature string is required for the 
> existence of the whole transformBehaviour attribute.
>  
> On the other hand in J.1 Specific feature strings it is said that:
> "http://www.w3.org/Graphics/SVG/feature/1.2/#TransformedVideo: The 
> ability to perform any transformation (including scaling) on video 
> content 
> <http://www.w3.org/TR/SVGMobile12/multimedia.html#transformBehavior>."
>  
> Other feature strings refer to the elements and attributes they 
> enable, but not the video related ones. This points to the direction 
> that the feature string signals the value "geometric" is usable; all 
> other values are always present.
>  
> What is the intended interpretation?
>  
> Yours,
>   - Kalle Raita
>
> Kalle Raita
> NVIDIA Corporation
> Tel. +358 40 723 1441
> kraita@nvidia.com
> http://eu.nvidia.com <http://eu.nvidia.com/>
>
>  
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-- 

*Jean-Claude Dufourd* - Chief Scientist, *Streamezzo*
21, av. Victor Hugo, 75016 Paris, France, Tel: +33 (0) 153632847
*http://www.streamezzo.com* - Fax: +33 (0) 142224601
Received on Thursday, 16 August 2007 12:10:22 GMT

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