No subject

Adam


On Mon, Oct 8, 2012 at 7:11 AM, Mark Toller <mark.toller at samsung.com> wrote:
> Hi,
>
>
>
> I'd like to ask the Webkit developers their opinion on providing some
> support for HbbTV [1] within Webkit. Hybrid Broadcast Broadband TV or
> "HbbTV", is a major new pan-European initiative aimed at harmonising the
> broadcast and broadband delivery of entertainment to the end consumer
> through connected TVs and set-top boxes.  The HbbTV standard is proving to
> be very popular, TVs and STBs supporting HbbTV are shipping in huge
numbers
> throughout Europe.  HbbTV is built on top of OIPF [2], which in turn is
> based on portions of CE-HTML [3].
>
>
>
> Our lab, Samsung Electronics Research Institute (SERI), has been heavily
> involved in HbbTV and our current solution is based on Webkit. We would
like
> to provide our changes back to the community.
>
>
>
> I know that support requests for CE-HTML have been briefly touched upon in
> the past. As I understand it, the main objection to providing support
within
> WebKit is that the CE-HTML specification is not freely available, and thus
> restricts the number of developers who can fully understand it and
therefore
> provide fixes / support.
>
>
>
> In reality, much of the CE-HTML specification simply profiles which parts
of
> the W3C standard behaviour are mandatory, optional and/or recommended.
OIPF
> then profiles CE-HTML (dropping some requirements, extending others to
match
> W3C/HTML5), HbbTV profiles out even more of CE-HTML.
>
>
>
> Other parts of OIPF and CE-HTML do not need to be implemented within
Webkit
> itself. Some can be implemented as object plugins (e.g. AV Control and
local
> video), while others, such as the JavaScript classes required, can be
> inserted into the JavaScriptCore at runtime.
>
>
>
> What I propose is to provide the basic support required within Webkit in
> order to at least load the XHTML portions of HbbTV applications and
provide
> the correct key handling to drive them. In order to provide 'full' HbbTV
> support, implementations would need to provide the plugins and additional
> JavaScript classes to complete the picture.
>
>
>
> For instance, by simply adding support for the document mime type handling
> of application/vnd.hbbtv.xhtml+xml and application/ce-html+xml, many HbbTV
> applications will load and display the main page, and several will also
> correctly navigate around the application correctly.
>
>
>
> Regards,
>
>
>
> Mark.
>
>
>
> [1] Hybrid Broadcast Broadband TV - http://www.hbbtv.org/
>
> [2] Open IPTV Forum - http://www.oipf.tv/
>
> [3] CEA, CEA-2014-A, Web-based Protocol Framework for Remote User
Interface
> on UPnP Networks and the Internet (Web4CE)
>
>
>
>
>
>
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