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Re: XProc and SMIL, Orchestrating Pipeline Steps

From: Philip Fennell <philip.fennell@gmail.com>
Date: Fri, 24 Apr 2009 15:30:51 +0100
Message-ID: <de7ce88b0904240730k45ecb8ebq183c4eadf41ec539@mail.gmail.com>
To: xproc-dev@w3.org
Vojtech, thanks for the feedback.

> There is one potential problem with your pipeline: the smil:timecatch
> element. You would need to put in p:pipeinfo so it is not interpreted as
> an XProc step:

Yes you're quite right, I did it that way to keep the example simple
but I also have an idea about that too. What about a processing
instruction like this:

<?xml-timesheet href="aggregate-terms.smil"?>

Then it is up to the processor if it wants to do anything with the PI
and XProc stays clean.


Regards

Philip Fennell


2009/4/24  <Toman_Vojtech@emc.com>:
>> As a result of the recent discussion around parallel step execution,
>> workflow orchestration and the like I had an idea about how you could
>> implement pipeline step timing and synchronization (orchestration)
>> without adding complexity to the existing XProc Recommendation. How
>> about using SMIL Timesheets <http://www.w3.org/TR/timesheets/>.
>
> Very interesting. Just to check I understood it completely: in order to
> get the behavior you are proposing, you need a SMIL-enabled XProc
> processor, right?
>
> I can imagine that adding SMIL support to an XProc processor should be
> doable (but I don't really know much about SMIL...)
>
> There is one potential problem with your pipeline: the smil:timecatch
> element. You would need to put in p:pipeinfo so it is not interpreted as
> an XProc step:
>
> <p:pipeinfo>
>  <smil:timesheet>
>    <smil:par>
>      <smil:item select="#service1" begin="aggregate-terms.begin"
> dur="11s"/>
>      <smil:item select="#service2" begin="aggregate-terms.begin"
> dur="11s"/>
>      <smil:item select="#service3" begin="aggregate-terms.begin"
> dur="11s"/>
>    </smil:par>
>  </smil:timesheet>
> </p:pipeinfo>
>
> Using p:pipeinfo gives you the additional benefit that the pipeline will
> run also with processors that do not understand SMIL (they will simply
> ignore the p:pipe-info).
>
> Regards,
> Vojtech
>
>
>
Received on Friday, 24 April 2009 14:31:31 GMT

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