- From: Thierry MICHEL <tmichel@w3.org>
- Date: Mon, 26 Apr 2004 15:47:52 +0200
- To: <public-tt@w3.org>
Minutes of TT WG Teleconference on 04/15/04 Attendees Glenn Adams (XFSI, Chair, Scribe) [GA] Mike Dolan (invited expert) [MD] Geoff Freed (WGBH/NCAM, scribe) [GF] Sean Hayes, Microsoft (SH) Erik Hodge (RealNetworks) [EH] David Kirby (BBC) [DK] Thierry Michel (W3C) [TM] Dave Singer (Apple) [DS] Regrets ************************************************************************ Agenda ************************************************************************ 1. Accept prior minutes for publishing. 2. MPEG (ISO SC29/WG11) Liaison Status 3. Font MIME Type Registration [DS] 4. Animation and Reflow 5. Style Updates [GF] ************************************************************************ 1. Accept prior minutes for publishing. ************************************************************************ Accepted. Action: [TM] Post outstanding draft minutes as "final" minutes to public reflector. [TM] Reminds members to register for upcoming F2F! ************************************************************************ 2. MPEG (ISO SC29/WG11) Liaison Status ************************************************************************ Action: [GA] Supply title, author list, and email addresses to [DS] to get a contribution number. ************************************************************************ 3. Font MIME Type Registration [DS] ************************************************************************ [DS] Provides new input at [1]. Reviews document. [1] http://lists.w3.org/Archives/Member/member-tt/2004Apr/0052.html [MD] Will this have to go through an IETF WG in order to be approved, since it is a top level type, and current process requires a standards track approach? Action: [DS] After having a document to show, contact Ned Freed to determine how to proceed. Action: [GA] Review and comment on [1]. ************************************************************************ 4. Animation and Reflow ************************************************************************ [EH] Text within other text can have a begin/end time, but this animates visibility, and not display; i.e., doesn't reflow. [GA] Discusses his take on current consensus positions in this area and his working assumptions: * TTAF goal is to be capable of representing functionality of enumerated DF formats (SAMI, QT, Real, ...), but not depend on a given DF format supporting all functionality in TTAF (i.e., AF->DF mapping may drop or transform information); * TTAF should define a DFXP (Distribution Format Transform Profile) that covers the most common set of functions found in enumerated DF formats (and possibly some non-common functions as well if deemed sufficiently important); * TTAF provides multiple levels of abstraction of same information that can be used at different levels by subsequent processing steps; document model supports multiple NF layer instances, and potentially multiple PF layer instances, but at most 1 LF layer instance (i.e., one can imagine following steps LF:PF (1->M); PF:NF (M->N); TTAF tool can then choose which layer instances to package into overall document instance; * TTAF will define default transforms for LF->PF and PF->NF; applications that use TTAF may define other transforms that may (or may not) be subsets or supersets of default transforms; * default transform from LF->PF for style properties is probably going to be limited to simple flattening (i.e., mapping from applicative styles to referential styles) without any further optimization of representation and without any consideration of style semantics (other than semantics implied by resolving cascading and inheritence rules in applicative styles); * temporal flow styles will probably not be in DFXP since none of the enumerated DFs support; however, a TTAF tool can precompile temporal flowed styles into NF layer instances to accommodate assumptions about device layout (and of course in a non-broadcast scenario, it could query device); ************************************************************************ 5. Style Updates [GF] ************************************************************************ [GF] Has updated some examples to use Gool scripts; semantic coherency no longer an issue. ************************************************************************ 6. Next Meetings ************************************************************************ Telecon Cancelled for 04/22; Next Telecon will be 04/29 at normal time. May 10-12 F2F Amsterdam (CWI); start 10:30AM on 10th, end 1800h on 12th Jun 22-24 F2F Mt View, CA (Microsoft) - Confirmed; [TM] to announce. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ START SUMMARY ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ *** OPEN ACTION ITEMS *** Action: [SH] Will investigate use of media queries in this context and report back. Action: [DS with help of Paul Nelson and Peter Lofting] Write RFC to register appropriate opentype/truetype font types as MIME media types, suggest model of "application/font-<font-type-name>", e.g., "application/font-truetype". Action: [GA] Make proposal regarding use of Xlink vocabulary or "src" attribute. Action: [GA] Draft new requirement on "Integrability" in general terms that should not impact testing or implementation requirements. Action: [GA] incorporate agreed changes into TT-AF-1-0-REQ in preparation for publishing final W3C Note. Action: [SH] will review and propose subset of aural parameters (see R305). Action: [GA] Add figure showing logical structure anticipated by requirements. Action: [GA] Add note to R217 and R219 that shows use of data: URI scheme. Action: [SH] to propose subset with extensions for use in CS Profile. Action: [GF] investigate syntax for regions vis-a-vis style. Action: [DK] To write up short paragraph on uses of role tokens. Suggest removing or adding as he progresses. Action: [TM] to propose and define standard MD attributes. N.B. Awaiting further discussion by WG. Action: [DK/MD/TM] Formulate recommendation on specific and general MD features. Action: [GA] Need to start planning for September meeting in Japan! Action: [SH] to draft standard ready text for subset of xquery. Action: [DS] Based on email of 01/14, integrate with fillBehavior as described in example. Action: [*] For module owners, start developing test suite documents that have feature tests in all necesary context, and no superfluous context. Follow-on for primary spec editor will be to incorporate fragments from these cases, but that will be subsequent to publishing first internal draft of integrated spec. *** OPEN ISSUES *** Issue: Whether to use XLink vocabulary, e.g., as used consistently by SVG, or use "src" attribute as apparently will be done in XHTML2? Issue: Probably want to permit in logical content mode the selection of content based on generic XML features of non-TT namespace descriptive markup, e.g., for applying style and timing semantics, in which case an appropriate TT container element shall be implied based on nearest ancestor TT namespace element. Issue: Need to think about cascading semantics; how to express, how to apply, etc. Possibly use CSS semantics here as well. Issue (2004-03-05): Whether to allow block as immediate child of inline? N.B. XSL-FO does allow this. [GA] showed example of renmoji (horizontal block in vertical Japanese lines). *** URIs *** [1] http://lists.w3.org/Archives/Member/member-tt/2004Apr/0052.html ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ END SUMMARY ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Thierry MICHEL W3C/ERCIM
Received on Monday, 26 April 2004 09:51:10 UTC