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[ACTION 510] Use of TTML Version in Timed Text Toolkit (TTT)

From: Glenn Adams <glenn@skynav.com>
Date: Thu, 30 Nov 2017 07:14:44 -0700
Message-ID: <CACQ=j+cECjOO7n7aV=+T=X3hpiL0sKtQdvbjMDDff5K1B3yxCw@mail.gmail.com>
To: TTWG <public-tt@w3.org>
I have completed a review of the TTT codebase and find that the following
uses of TTML specification version (as a applied to a specific document)
are used during processing:

   - [ttv] select between version specific default profiles
   - [ttv] select between TTML schemas associated with different
   specification versions (56 instances)
   - [ttv] contextualize length expressions in terms of version (in order
   to support new units) (2 instances)
   - [ttv] enable deprecation warnings (1 instance)
   - [ttpe] select use of initial value of tts:position versus tts:origin
   (1 instance)
   - [ttx] select between tt element and region element for root of style
   inheritance (1 instance)
   - [ttx] select between version specific transformation helper class
   methods used during ISD transformation processing (24 instances)

In total, 85 (or more) code branches are determined by a document's
effective version.
Received on Thursday, 30 November 2017 14:26:30 UTC

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