I think we should be careful here and avoid to wide interpreations of the
text.
Remember some time ago I asked a question about when the ContentAvailbale
event is generated. The answer I got, I think from Andreas, was just arguing
the other way round, i.e. if an object has no content data that part of
Preparation Behaviour of Root class would not have any effect.
To my understanding the MHEG-5 maintence process should write down
clarifications for those clauses where there is clear evidence that some
reader might interprete the existing standard in the wrong way.
BR Guido
-----------------------------------------------------------------
Guido Grassel guido.grassel@research.nokia.com
Nokia Research Center tel/fax: +358 9 4376-6827/6855
mailing address: location:
P.O. Box 422 Itälahdenkatu 22b
FIN-00045 Nokia Group 00210 Helsinki-Lauttasaari
Finland
----------
::>From: EXT Emmanuel BEUQUE
::>To: Andreas Kraft; mheg-ug
::>Subject: Re: Preload/Unload
::>Date: 15. Januaryta 1998 21:34
::>
::>
::>À (At) 14:50 +0100 15/01/98, Andreas Kraft écrivait (wrote) :
::>>For objects with content data like Bitmap or Text this works fine. But
the
::>>second point in the "Provision of use" of both actions states:
::>>
::>>"The Content attrobute of the target Ingredient shall be different from
Null"
::>>
::>>This means that the actions can not be targeted to (visible) objects
like
::>>Rectangles or Hotspots which have no content data.
::>
::>My understanding is that this provision of use concerns only Ingredients
::>that do have an content data attribute. I think this provision of use did
::>not intend to prevent the rectangle and hotspots to be prepared but
rather
::>wanted to forbid the preparation of bitmap or other visibles which may
have
::>a content if this content has not been specified yet. In fact, the
::>preparation of the object suppose the preparation of the content itself
and
::>I think that in this case, it could be a problem for an engine if the
::>content were not specified.
::>
::>My proposal would rather be to complete the provision of use to say :
::>
::>"The Content attribute of the target Ingredient shall be different from
::>Null if this attribute can be encoded for the target Ingredient"
::>
::>What do you think ?
::>
::>Regards,
::>Emmanuel
::>
::>__________________________________________________________________
::> Emmanuel BEUQUE mailto:ebeuque@pratique.fr
::> MediaServ tel: +33 (0) 2 99 64 35 64
::>Multimedia consultant & developer fax: +33 (0) 2 99 64 36 65
::>
::>
::>
::>