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RE: Pick Media Intent Review

From: Jungkee Song <jungkee.song@samsung.com>
Date: Wed, 01 Aug 2012 20:31:34 +0900
To: 'FABLET Youenn' <Youenn.Fablet@crf.canon.fr>
Cc: public-device-apis@w3.org, 'WebIntents' <public-web-intents@w3.org>
Message-id: <005a01cd6fd9$346d0a00$9d471e00$%song@samsung.com>
Hi Youenn,

Please see inline.

> Fewer choices, especially if relevant, seems nicer to the end-user.
> Defaulting rules may be easier to define for user-agents as well, like
> pick images on flickr, pick music on play.
>
> Also, it seems good design to enable provider or user agent to detect
> whether a media selected by a user matches the web intent client
> requirements, before actually sharing that data to the intent client.
> If a web intent client only processes mp3 and a user selects an ogg file
> (or worse, jpeg), the web intent provider may be able to warn the user
> before sharing the media.

Upon the loosely coupled nature of Web Intents, we basically do not prefer
to put much constraints in the intent parameters. Rather, the service
implementation can provide flexible UI to allow users to conduct advanced
searching and data filtering, including the media type selection. For
example, users can choose "video/mpeg" as a search filter in the service UI.
(I did not consider *explicit intents* here, though.)

> If not passed through the type parameter, which has its own semantics and
> constraints, that kind of information can fit in the extras dictionary.
> 
> > > One straightforward option would be to use the MIME matching type
> > parameter filtering capacity.
> > > A user agent would be able to filter the number of potential pickers
> > > based
> > on that parameter.
> >
> > I think MIME does not give enough information to distinguish the PMI
> services
> > from other intent services.
> 
> Can you elaborate on that?

Using the Pick Media Intent services, users would expect to pick some useful
metadata along with the media resource. With the services registered with
the type, "http://intents.w3.org/type/media", users can be aware of the
possible such services among various media services.

Regards,
Jungkee

Jungkee Song
Samsung Electronics
Received on Wednesday, 1 August 2012 11:31:24 GMT

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