--- a/ttml-ww-profiles/ttml-ww-profiles.html Thu Mar 19 07:30:42 2015 -0700
+++ b/ttml-ww-profiles/ttml-ww-profiles.html Thu Mar 19 20:29:04 2015 -0700
@@ -241,7 +241,7 @@
</p>
<h1 class="title p-name" id="title" property="dcterms:title">TTML Text and Image Profiles for Internet Media Subtitles and Captions 1.0</h1>
- <h2 id="w3c-editor-s-draft-25-february-2015"><abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft <time property="dcterms:issued" class="dt-published" datetime="2015-02-25">25 February 2015</time></h2>
+ <h2 id="w3c-editor-s-draft-19-march-2015"><abbr title="World Wide Web Consortium">W3C</abbr> Editor's Draft <time property="dcterms:issued" class="dt-published" datetime="2015-03-19">19 March 2015</time></h2>
<dl>
<dt>This version:</dt>
@@ -397,7 +397,7 @@
-</section><section id="toc"><h2 class="introductory" id="h-toc" resource="#h-toc"><span property="xhv:role" resource="xhv:heading">Table of Contents</span></h2><ul class="toc" role="directory" id="respecContents"><li class="tocline"><a href="#scope" class="tocxref"><span class="secno">1. </span>Scope</a></li><li class="tocline"><a href="#conventions" class="tocxref"><span class="secno">2. </span>Documentation Conventions</a></li><li class="tocline"><a href="#terms" class="tocxref"><span class="secno">3. </span>Terms and Definitions</a></li><li class="tocline"><a href="#conformance" class="tocxref"><span class="secno">4. </span>Conformance</a></li><li class="tocline"><a href="#profiles" class="tocxref"><span class="secno">5. </span>Profiles</a><ul class="toc"><li class="tocline"><a href="#general" class="tocxref"><span class="secno">5.1 </span>General</a></li><li class="tocline"><a href="#text-profile" class="tocxref"><span class="secno">5.2 </span>Text Profile</a></li><li class="tocline"><a href="#image-profile" class="tocxref"><span class="secno">5.3 </span>Image Profile</a></li></ul></li><li class="tocline"><a href="#common-constraints" class="tocxref"><span class="secno">6. </span>Common Constraints</a><ul class="toc"><li class="tocline"><a href="#document-encoding" class="tocxref"><span class="secno">6.1 </span>Document Encoding</a></li><li class="tocline"><a href="#foreign-element-and-attributes" class="tocxref"><span class="secno">6.2 </span>Foreign Element and Attributes</a></li><li class="tocline"><a href="#namespaces" class="tocxref"><span class="secno">6.3 </span>Namespaces</a></li><li class="tocline"><a href="#overflow" class="tocxref"><span class="secno">6.4 </span>Overflow</a></li><li class="tocline"><a href="#related-video-object" class="tocxref"><span class="secno">6.5 </span>Related Video Object</a></li><li class="tocline"><a href="#synchronization" class="tocxref"><span class="secno">6.6 </span>Synchronization</a></li><li class="tocline"><a href="#extensions" class="tocxref"><span class="secno">6.7 </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#ttp-aspectRatio" class="tocxref"><span class="secno">6.7.1 </span>ittp:aspectRatio</a></li><li class="tocline"><a href="#ttp-progressivelyDecodable" class="tocxref"><span class="secno">6.7.2 </span>ittp:progressivelyDecodable</a></li><li class="tocline"><a href="#tts-forcedDisplay" class="tocxref"><span class="secno">6.7.3 </span>itts:forcedDisplay</a></li><li class="tocline"><a href="#ttm-altText" class="tocxref"><span class="secno">6.7.4 </span>ittm:altText</a></li></ul></li><li class="tocline"><a href="#region" class="tocxref"><span class="secno">6.8 </span>Region</a><ul class="toc"><li class="tocline"><a href="#presented-region" class="tocxref"><span class="secno">6.8.1 </span>Presented Region</a></li><li class="tocline"><a href="#dimensions-and-position" class="tocxref"><span class="secno">6.8.2 </span>Dimensions and Position</a></li><li class="tocline"><a href="#maximum-number" class="tocxref"><span class="secno">6.8.3 </span>Maximum number</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model-1" class="tocxref"><span class="secno">6.9 </span>Hypothetical Render Model</a></li><li class="tocline"><a href="#common-features" class="tocxref"><span class="secno">6.10 </span>Features</a></li></ul></li><li class="tocline"><a href="#text-profile-constraints" class="tocxref"><span class="secno">7. </span>Text Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#text-profile-designator" class="tocxref"><span class="secno">7.1 </span>Profile Designator</a></li><li class="tocline"><a href="#recommended-character-sets" class="tocxref"><span class="secno">7.2 </span>Recommended Character Sets</a></li><li class="tocline"><a href="#reference-fonts-1" class="tocxref"><span class="secno">7.3 </span>Reference Fonts</a></li><li class="tocline"><a href="#features" class="tocxref"><span class="secno">7.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#image-profile-constraints" class="tocxref"><span class="secno">8. </span>Image Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#image-profile-designator" class="tocxref"><span class="secno">8.1 </span>Profile Designator</a></li><li class="tocline"><a href="#presented-image" class="tocxref"><span class="secno">8.2 </span>Presented Image</a><ul class="toc"><li class="tocline"><a href="#definition" class="tocxref"><span class="secno">8.2.1 </span>Definition</a></li><li class="tocline"><a href="#number-per-region" class="tocxref"><span class="secno">8.2.2 </span>Number per Region</a></li></ul></li><li class="tocline"><a href="#div-element" class="tocxref"><span class="secno">8.3 </span><code>div</code> element</a></li><li class="tocline"><a href="#features-1" class="tocxref"><span class="secno">8.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model" class="tocxref"><span class="secno">9. </span>Hypothetical Render Model</a><ul class="toc"><li class="tocline"><a href="#overview" class="tocxref"><span class="secno">9.1 </span>Overview</a></li><li class="tocline"><a href="#general-1" class="tocxref"><span class="secno">9.2 </span>General</a></li><li class="tocline"><a href="#paint-regions" class="tocxref"><span class="secno">9.3 </span>Paint Regions</a></li><li class="tocline"><a href="#paint-images" class="tocxref"><span class="secno">9.4 </span>Paint Images</a></li><li class="tocline"><a href="#paint-text" class="tocxref"><span class="secno">9.5 </span>Paint Text</a></li></ul></li><li class="tocline"><a href="#reference-fonts" class="tocxref"><span class="secno">A. </span>Reference Fonts</a></li><li class="tocline"><a href="#recommended-unicode-code-points-per-language" class="tocxref"><span class="secno">B. </span>Recommended Character Sets</a></li><li class="tocline"><a href="#forced-content" class="tocxref"><span class="secno">C. </span>Forced content (non-normative)</a></li><li class="tocline"><a href="#wcag-applications" class="tocxref"><span class="secno">D. </span>WCAG Considerations</a></li><li class="tocline"><a href="#sample-instance" class="tocxref"><span class="secno">E. </span>Sample Document Instance (non-normative)</a></li><li class="tocline"><a href="#features-and-extensions" class="tocxref"><span class="secno">F. </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#general-2" class="tocxref"><span class="secno">F.1 </span>General</a></li><li class="tocline"><a href="#progressivelydecodable" class="tocxref"><span class="secno">F.2 </span>#progressivelyDecodable</a></li><li class="tocline"><a href="#aspectratio" class="tocxref"><span class="secno">F.3 </span>#aspectRatio</a></li><li class="tocline"><a href="#forceddisplay" class="tocxref"><span class="secno">F.4 </span>#forcedDisplay</a></li><li class="tocline"><a href="#alttext" class="tocxref"><span class="secno">F.5 </span>#altText</a></li><li class="tocline"><a href="#linepadding" class="tocxref"><span class="secno">F.6 </span>#linePadding</a></li><li class="tocline"><a href="#multirowalign" class="tocxref"><span class="secno">F.7 </span>#multiRowAlign</a></li></ul></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">G. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">G.1 </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno">G.2 </span>Informative references</a></li></ul></li></ul></section>
+</section><section id="toc"><h2 class="introductory" id="h-toc" resource="#h-toc"><span property="xhv:role" resource="xhv:heading">Table of Contents</span></h2><ul class="toc" role="directory" id="respecContents"><li class="tocline"><a href="#scope" class="tocxref"><span class="secno">1. </span>Scope</a></li><li class="tocline"><a href="#conventions" class="tocxref"><span class="secno">2. </span>Documentation Conventions</a></li><li class="tocline"><a href="#terms" class="tocxref"><span class="secno">3. </span>Terms and Definitions</a></li><li class="tocline"><a href="#conformance" class="tocxref"><span class="secno">4. </span>Conformance</a></li><li class="tocline"><a href="#profiles" class="tocxref"><span class="secno">5. </span>Profiles</a><ul class="toc"><li class="tocline"><a href="#general" class="tocxref"><span class="secno">5.1 </span>General</a></li><li class="tocline"><a href="#text-profile" class="tocxref"><span class="secno">5.2 </span>Text Profile</a></li><li class="tocline"><a href="#image-profile" class="tocxref"><span class="secno">5.3 </span>Image Profile</a></li></ul></li><li class="tocline"><a href="#common-constraints" class="tocxref"><span class="secno">6. </span>Common Constraints</a><ul class="toc"><li class="tocline"><a href="#document-encoding" class="tocxref"><span class="secno">6.1 </span>Document Encoding</a></li><li class="tocline"><a href="#foreign-element-and-attributes" class="tocxref"><span class="secno">6.2 </span>Foreign Element and Attributes</a></li><li class="tocline"><a href="#namespaces" class="tocxref"><span class="secno">6.3 </span>Namespaces</a></li><li class="tocline"><a href="#overflow" class="tocxref"><span class="secno">6.4 </span>Overflow</a></li><li class="tocline"><a href="#related-video-object" class="tocxref"><span class="secno">6.5 </span>Related Video Object</a></li><li class="tocline"><a href="#synchronization" class="tocxref"><span class="secno">6.6 </span>Synchronization</a></li><li class="tocline"><a href="#extensions" class="tocxref"><span class="secno">6.7 </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#ttp-aspectRatio" class="tocxref"><span class="secno">6.7.1 </span>ittp:aspectRatio</a><ul class="toc"><li class="tocline"><a href="#ttp-progressivelyDecodable" class="tocxref"><span class="secno">6.7.1.1 </span>ittp:progressivelyDecodable</a></li><li class="tocline"><a href="#tts-forcedDisplay" class="tocxref"><span class="secno">6.7.1.2 </span>itts:forcedDisplay</a></li><li class="tocline"><a href="#ttm-altText" class="tocxref"><span class="secno">6.7.1.3 </span>ittm:altText</a></li></ul></li><li class="tocline"><a href="#region" class="tocxref"><span class="secno">6.7.2 </span>Region</a><ul class="toc"><li class="tocline"><a href="#presented-region" class="tocxref"><span class="secno">6.7.2.1 </span>Presented Region</a></li><li class="tocline"><a href="#dimensions-and-position" class="tocxref"><span class="secno">6.7.2.2 </span>Dimensions and Position</a></li><li class="tocline"><a href="#maximum-number" class="tocxref"><span class="secno">6.7.2.3 </span>Maximum number</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model-1" class="tocxref"><span class="secno">6.7.3 </span>Hypothetical Render Model</a></li><li class="tocline"><a href="#common-features" class="tocxref"><span class="secno">6.7.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#text-profile-constraints" class="tocxref"><span class="secno">6.8 </span>Text Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#text-profile-designator" class="tocxref"><span class="secno">6.8.1 </span>Profile Designator</a></li><li class="tocline"><a href="#recommended-character-sets" class="tocxref"><span class="secno">6.8.2 </span>Recommended Character Sets</a></li><li class="tocline"><a href="#reference-fonts-1" class="tocxref"><span class="secno">6.8.3 </span>Reference Fonts</a></li><li class="tocline"><a href="#features" class="tocxref"><span class="secno">6.8.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#image-profile-constraints" class="tocxref"><span class="secno">6.9 </span>Image Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#image-profile-designator" class="tocxref"><span class="secno">6.9.1 </span>Profile Designator</a></li><li class="tocline"><a href="#presented-image" class="tocxref"><span class="secno">6.9.2 </span>Presented Image</a><ul class="toc"><li class="tocline"><a href="#definition" class="tocxref"><span class="secno">6.9.2.1 </span>Definition</a></li><li class="tocline"><a href="#number-per-region" class="tocxref"><span class="secno">6.9.2.2 </span>Number per Region</a></li></ul></li><li class="tocline"><a href="#div-element" class="tocxref"><span class="secno">6.9.3 </span><code>div</code> element</a></li><li class="tocline"><a href="#features-1" class="tocxref"><span class="secno">6.9.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model" class="tocxref"><span class="secno">6.10 </span>Hypothetical Render Model</a><ul class="toc"><li class="tocline"><a href="#overview" class="tocxref"><span class="secno">6.10.1 </span>Overview</a></li><li class="tocline"><a href="#general-1" class="tocxref"><span class="secno">6.10.2 </span>General</a></li><li class="tocline"><a href="#paint-regions" class="tocxref"><span class="secno">6.10.3 </span>Paint Regions</a></li><li class="tocline"><a href="#paint-images" class="tocxref"><span class="secno">6.10.4 </span>Paint Images</a></li><li class="tocline"><a href="#paint-text" class="tocxref"><span class="secno">6.10.5 </span>Paint Text</a></li></ul></li></ul></li><li class="tocline"><a href="#reference-fonts" class="tocxref"><span class="secno">A. </span>Reference Fonts</a></li><li class="tocline"><a href="#recommended-unicode-code-points-per-language" class="tocxref"><span class="secno">B. </span>Recommended Character Sets</a></li><li class="tocline"><a href="#forced-content" class="tocxref"><span class="secno">C. </span>Forced content (non-normative)</a></li><li class="tocline"><a href="#wcag-applications" class="tocxref"><span class="secno">D. </span>WCAG Considerations</a></li><li class="tocline"><a href="#sample-instance" class="tocxref"><span class="secno">E. </span>Sample Document Instance (non-normative)</a></li><li class="tocline"><a href="#features-and-extensions" class="tocxref"><span class="secno">F. </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#general-2" class="tocxref"><span class="secno">F.1 </span>General</a></li><li class="tocline"><a href="#progressivelydecodable" class="tocxref"><span class="secno">F.2 </span>#progressivelyDecodable</a></li><li class="tocline"><a href="#aspectratio" class="tocxref"><span class="secno">F.3 </span>#aspectRatio</a></li><li class="tocline"><a href="#forceddisplay" class="tocxref"><span class="secno">F.4 </span>#forcedDisplay</a></li><li class="tocline"><a href="#alttext" class="tocxref"><span class="secno">F.5 </span>#altText</a></li><li class="tocline"><a href="#linepadding" class="tocxref"><span class="secno">F.6 </span>#linePadding</a></li><li class="tocline"><a href="#multirowalign" class="tocxref"><span class="secno">F.7 </span>#multiRowAlign</a></li></ul></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">G. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">G.1 </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno">G.2 </span>Informative references</a></li></ul></li></ul></section>
@@ -495,7 +495,7 @@
<a href="#dfn-document-instance" class="internalDFN">Document Instance</a> such that, when image content is encountered, assistive technologies have access to its corresponding text
form. The method by which this association is made is left to each application.</p>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note2"><span>Note</span></div><p class="">The <code>ittm:altText</code> element specified <a href="#ttm-altText" class="sec-ref"><span class="secno">6.7.4</span> <span class="sec-title">ittm:altText</span></a> also allows text equivalent
+ <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note2"><span>Note</span></div><p class="">The <code>ittm:altText</code> element specified <a href="#ttm-altText" class="sec-ref"><span class="secno">6.7.1.3</span> <span class="sec-title">ittm:altText</span></a> also allows text equivalent
string to be associated with an image, e.g. to support indexation of the content and also facilitate quality checking of the
document during authoring.</p></div>
@@ -506,13 +506,13 @@
<section id="text-profile" typeof="bibo:Chapter" resource="#text-profile" property="bibo:hasPart">
<h3 id="h-text-profile" resource="#h-text-profile"><span property="xhv:role" resource="xhv:heading"><span class="secno">5.2 </span>Text Profile</span></h3>
- <p>The <dfn id="dfn-text-profile">Text Profile</dfn> consists of Sections <a href="#common-constraints" class="sec-ref"><span class="secno">6.</span> <span class="sec-title">Common Constraints</span></a> and <a href="#text-profile-constraints" class="sec-ref"><span class="secno">7.</span> <span class="sec-title">Text Profile Constraints</span></a>.</p>
+ <p>The <dfn id="dfn-text-profile">Text Profile</dfn> consists of Sections <a href="#common-constraints" class="sec-ref"><span class="secno">6.</span> <span class="sec-title">Common Constraints</span></a> and <a href="#text-profile-constraints" class="sec-ref"><span class="secno">6.8</span> <span class="sec-title">Text Profile Constraints</span></a>.</p>
</section>
<section id="image-profile" typeof="bibo:Chapter" resource="#image-profile" property="bibo:hasPart">
<h3 id="h-image-profile" resource="#h-image-profile"><span property="xhv:role" resource="xhv:heading"><span class="secno">5.3 </span>Image Profile</span></h3>
- <p>The <dfn id="dfn-image-profile">Image Profile</dfn> consists of Sections <a href="#common-constraints" class="sec-ref"><span class="secno">6.</span> <span class="sec-title">Common Constraints</span></a> and <a href="#image-profile-constraints" class="sec-ref"><span class="secno">8.</span> <span class="sec-title">Image Profile Constraints</span></a>.</p>
+ <p>The <dfn id="dfn-image-profile">Image Profile</dfn> consists of Sections <a href="#common-constraints" class="sec-ref"><span class="secno">6.</span> <span class="sec-title">Common Constraints</span></a> and <a href="#image-profile-constraints" class="sec-ref"><span class="secno">6.9</span> <span class="sec-title">Image Profile Constraints</span></a>.</p>
</section>
</section>
@@ -686,7 +686,7 @@
the computed value of <code>tts:overflow</code> for the region.</p>
<div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note3"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], <code>tts:overflow</code> has no effect on the extent of the region, and hence
- the total normalized drawing area S(En) at <a href="#paint-regions" class="sec-ref"><span class="secno">9.3</span> <span class="sec-title">Paint Regions</span></a>.</p></div>
+ the total normalized drawing area S(En) at <a href="#paint-regions" class="sec-ref"><span class="secno">6.10.3</span> <span class="sec-title">Paint Regions</span></a>.</p></div>
</section>
<section id="related-video-object" typeof="bibo:Chapter" resource="#related-video-object" property="bibo:hasPart">
@@ -718,12 +718,6 @@
considered the delivered video program upsampled to is original rate, thereby allowing subtitle content to be rendered at the
same temporal locations it was authored.</p></div>
- <p>If <code>ttp:frameRate</code> is specified, then the product of <code>ttp:frameRate</code> and
- <code>ttp:frameRateMultiplier</code> <em class="rfc2119" title="SHALL">SHALL</em> be the frame rate of the related video object.</p>
-
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note5"><span>Note</span></div><p class="">A document can be made independent of the frame rate of the related video object by never using the
- <em>frames</em> term in a time expression: as specified in <a href="#common-features" class="sec-ref"><span class="secno">6.10</span> <span class="sec-title">Features</span></a>, <code>ttp:frameRate</code> is
- required only if the document includes one or more time expressions that uses the <em>frames</em> term.</p></div>
</section>
<section id="extensions" typeof="bibo:Chapter" resource="#extensions" property="bibo:hasPart">
@@ -793,12 +787,8 @@
...
</tt></pre></div>
- <p>Integer pixel positions on the related video object frame computed from real percentage length values <em class="rfc2119" title="SHALL">SHALL</em> use half-up
- rounding, i.e. round(x) = floor(x+0.5).</p>
- </section>
-
<section id="ttp-progressivelyDecodable" typeof="bibo:Chapter" resource="#ttp-progressivelyDecodable" property="bibo:hasPart">
- <h4 id="h-ttp-progressivelydecodable" resource="#h-ttp-progressivelydecodable"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.2 </span>ittp:progressivelyDecodable</span></h4>
+ <h5 id="h-ttp-progressivelydecodable" resource="#h-ttp-progressivelydecodable"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.1.1 </span>ittp:progressivelyDecodable</span></h5>
<p>A <a href="#dfn-progressively-decodable-document-instance" class="internalDFN">progressively decodable Document Instance</a> is structured to facilitate presentation before the document is
received in its entirety, and can be identified using <code>ittp:progressivelyDecodable</code> attribute.</p>
@@ -859,7 +849,7 @@
...
</tt></pre></div>
- <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note6"><span>Note</span></div><div class="">
+ <div class="note"><div class="note-title" aria-level="6" role="heading" id="h-note5"><span>Note</span></div><div class="">
<p>[<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>] specifies explicitly referencing of elements identified using <code>xml:id</code> in the following
circumstances:</p>
@@ -886,7 +876,7 @@
</section>
<section id="tts-forcedDisplay" typeof="bibo:Chapter" resource="#tts-forcedDisplay" property="bibo:hasPart">
- <h4 id="h-tts-forceddisplay" resource="#h-tts-forceddisplay"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.3 </span>itts:forcedDisplay</span></h4>
+ <h5 id="h-tts-forceddisplay" resource="#h-tts-forceddisplay"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.1.2 </span>itts:forcedDisplay</span></h5>
<p><code>itts:forcedDisplay</code> allows the processor to override the computed value of <code>tts:visibility</code>
attribute in conjunction with an application parameter <code>displayForcedOnlyMode</code>.</p>
@@ -971,22 +961,22 @@
...</pre></div>
- <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note7"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], the background of a region can be visible even if the computed value of <code>tts:visibility</code> equals
+ <div class="note"><div class="note-title" aria-level="6" role="heading" id="h-note6"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], the background of a region can be visible even if the computed value of <code>tts:visibility</code> equals
"hidden" for all active content within. The background of a region for which <code>itts:forcedDisplay</code> equals "true" can therefore remain visible even if <code>itts:forcedDisplay</code> equals "false" for all active
content elements within the region and <code>displayForcedOnlyMode</code> equals "true". Authors can avoid this situation, for instance, by ensuring that content
elements and the regions that they are flowed into always have the same value of <code>itts:forcedDisplay</code>.</p></div>
- <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note8"><span>Note</span></div><p class="">Although <code>itts:forcedDisplay</code>, like all the TTML style attributes, has no defined semantics on a
+ <div class="note"><div class="note-title" aria-level="6" role="heading" id="h-note7"><span>Note</span></div><p class="">Although <code>itts:forcedDisplay</code>, like all the TTML style attributes, has no defined semantics on a
<code>br</code> content element, <code>itts:forcedDisplay</code> will apply to a <code>br</code> content element if it is
either defined on an ancestor content element of the <code>br</code> content element or it is applied to a region element
corresponding to a region that the <code>br</code> content element is being flowed into.</p></div>
- <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note9"><span>Note</span></div><p class="">It is expected that the functionality of <code>itts:forcedDisplay</code> will be mapped to a conditional
+ <div class="note"><div class="note-title" aria-level="6" role="heading" id="h-note8"><span>Note</span></div><p class="">It is expected that the functionality of <code>itts:forcedDisplay</code> will be mapped to a conditional
style construct in a future revision of this specification.</p></div>
</section>
<section id="ttm-altText" typeof="bibo:Chapter" resource="#ttm-altText" property="bibo:hasPart">
- <h4 id="h-ttm-alttext" resource="#h-ttm-alttext"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.4 </span>ittm:altText</span></h4>
+ <h5 id="h-ttm-alttext" resource="#h-ttm-alttext"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.1.3 </span>ittm:altText</span></h5>
<p><code>ittm:altText</code> allows an author to provide a text string equivalent for an element, typically an image. This
text equivalent <em class="rfc2119" title="MAY">MAY</em> be used to support indexing of the content and also facilitate quality checking of the document during
@@ -1015,7 +1005,7 @@
<p>The <code>ittm:altText</code> element <em class="rfc2119" title="SHALL">SHALL</em> be a child of the <code>metadata</code> element.</p>
- <p><a href="#image-profile-constraints" class="sec-ref"><span class="secno">8.</span> <span class="sec-title">Image Profile Constraints</span></a> specifies the use of the <code>ittm:altText</code> element with images.</p>
+ <p><a href="#image-profile-constraints" class="sec-ref"><span class="secno">6.9</span> <span class="sec-title">Image Profile Constraints</span></a> specifies the use of the <code>ittm:altText</code> element with images.</p>
<div class="example"><div class="example-title"><span>Example 5</span></div><pre class="example">...
<div region="r1" begin="1s" end="6s" smpte:backgroundImage="1.png">
@@ -1025,17 +1015,17 @@
</div>
...</pre></div>
- <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note10"><span>Note</span></div><p class="">In contrast to the common use of <code>alt</code> attributes in [<cite><a class="bibref" href="#bib-HTML5">HTML5</a></cite>], the <code>ittm:altText</code>
+ <div class="note"><div class="note-title" aria-level="6" role="heading" id="h-note9"><span>Note</span></div><p class="">In contrast to the common use of <code>alt</code> attributes in [<cite><a class="bibref" href="#bib-HTML5">HTML5</a></cite>], the <code>ittm:altText</code>
attribute content is not intended to be displayed in place of the element if the element is not loaded. The
<code>ittm:altText</code> attribute content can however be read and used by assistive technologies.</p></div>
</section>
</section>
<section id="region" typeof="bibo:Chapter" resource="#region" property="bibo:hasPart">
- <h3 id="h-region" resource="#h-region"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8 </span>Region</span></h3>
+ <h4 id="h-region" resource="#h-region"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.2 </span>Region</span></h4>
<section id="presented-region" typeof="bibo:Chapter" resource="#presented-region" property="bibo:hasPart">
- <h4 id="h-presented-region" resource="#h-presented-region"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.1 </span>Presented Region</span></h4>
+ <h5 id="h-presented-region" resource="#h-presented-region"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.2.1 </span>Presented Region</span></h5>
<p>A <dfn id="dfn-presented-region">presented region</dfn> is a temporally active region that satisfies the following conditions:</p>
@@ -1052,7 +1042,7 @@
</section>
<section id="dimensions-and-position" typeof="bibo:Chapter" resource="#dimensions-and-position" property="bibo:hasPart">
- <h4 id="h-dimensions-and-position" resource="#h-dimensions-and-position"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.2 </span>Dimensions and Position</span></h4>
+ <h5 id="h-dimensions-and-position" resource="#h-dimensions-and-position"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.2.2 </span>Dimensions and Position</span></h5>
<p>All regions <em class="rfc2119" title="SHALL NOT">SHALL NOT</em> extend beyond the root container, i.e. the intersection of the sets of coordinates belonging to a
region (including its boundary) and the sets of coordinates belonging to the root container (including its boundary) is the
@@ -1063,21 +1053,21 @@
</section>
<section id="maximum-number" typeof="bibo:Chapter" resource="#maximum-number" property="bibo:hasPart">
- <h4 id="h-maximum-number" resource="#h-maximum-number"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.3 </span>Maximum number</span></h4>
+ <h5 id="h-maximum-number" resource="#h-maximum-number"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.2.3 </span>Maximum number</span></h5>
<p>The number of <a title="presented region" href="#dfn-presented-region" class="internalDFN">presented regions</a> in a given <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> <em class="rfc2119" title="SHALL NOT">SHALL NOT</em> be greater than 4.</p>
</section>
</section>
<section id="hypothetical-render-model-1" typeof="bibo:Chapter" resource="#hypothetical-render-model-1" property="bibo:hasPart">
- <h3 id="h-hypothetical-render-model-1" resource="#h-hypothetical-render-model-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9 </span>Hypothetical Render Model</span></h3>
+ <h4 id="h-hypothetical-render-model-1" resource="#h-hypothetical-render-model-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.3 </span>Hypothetical Render Model</span></h4>
<p>Any sequence of consecutive <a title="intermediate synchronic document" href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic documents</a> <em class="rfc2119" title="SHALL">SHALL</em> be
- reproducible without error by the Hypothetical Render Model specified in Section <a href="#hypothetical-render-model" class="sec-ref"><span class="secno">9.</span> <span class="sec-title">Hypothetical Render Model</span></a>.</p>
+ reproducible without error by the Hypothetical Render Model specified in Section <a href="#hypothetical-render-model" class="sec-ref"><span class="secno">6.10</span> <span class="sec-title">Hypothetical Render Model</span></a>.</p>
</section>
<section id="common-features" typeof="bibo:Chapter" resource="#common-features" property="bibo:hasPart">
- <h3 id="h-common-features" resource="#h-common-features"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10 </span>Features</span></h3>
+ <h4 id="h-common-features" resource="#h-common-features"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.7.4 </span>Features</span></h4>
<p>Unless specified otherwise,a <a href="#dfn-document-instance" class="internalDFN">Document Instance</a> <em class="rfc2119" title="SHALL">SHALL</em> conform to the following:</p>
@@ -1517,17 +1507,17 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note11"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], a <code>#time-offset-with-frames</code> expression is translated to a media time
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note10"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], a <code>#time-offset-with-frames</code> expression is translated to a media time
M according to M = 3600 · hours + 60 · minutes + seconds + (frames ÷ (<code>ttp:frameRateMultiplier</code> ·
<code>ttp:frameRate</code>)).</p></div>
</section>
</section>
<section id="text-profile-constraints" typeof="bibo:Chapter" resource="#text-profile-constraints" property="bibo:hasPart">
- <!--OddPage--><h2 id="h-text-profile-constraints" resource="#h-text-profile-constraints"><span property="xhv:role" resource="xhv:heading"><span class="secno">7. </span>Text Profile Constraints</span></h2>
+ <h3 id="h-text-profile-constraints" resource="#h-text-profile-constraints"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8 </span>Text Profile Constraints</span></h3>
<section id="text-profile-designator" typeof="bibo:Chapter" resource="#text-profile-designator" property="bibo:hasPart">
- <h3 id="h-text-profile-designator" resource="#h-text-profile-designator"><span property="xhv:role" resource="xhv:heading"><span class="secno">7.1 </span>Profile Designator</span></h3>
+ <h4 id="h-text-profile-designator" resource="#h-text-profile-designator"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.1 </span>Profile Designator</span></h4>
<p>This profile is associated with the following profile designator:</p>
@@ -1549,32 +1539,32 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note12"><span>Note</span></div><p class="">As specified in <a href="#common-features" class="sec-ref"><span class="secno">6.10</span> <span class="sec-title">Features</span></a>, the presence of the <code>ttp:profile</code> attribute is
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note11"><span>Note</span></div><p class="">As specified in <a href="#common-features" class="sec-ref"><span class="secno">6.7.4</span> <span class="sec-title">Features</span></a>, the presence of the <code>ttp:profile</code> attribute is
not required by this profile. The profile designator specified above is intended to be generally used to signal conformance
of a <a href="#dfn-document-instance" class="internalDFN">Document Instance</a> to the profile. The details of such signaling depends on the application, and can, for instance, use
metadata structures out-of-band of the <a href="#dfn-document-instance" class="internalDFN">Document Instance</a>.</p></div>
</section>
<section id="recommended-character-sets" typeof="bibo:Chapter" resource="#recommended-character-sets" property="bibo:hasPart">
- <h3 id="h-recommended-character-sets" resource="#h-recommended-character-sets"><span property="xhv:role" resource="xhv:heading"><span class="secno">7.2 </span>Recommended Character Sets</span></h3>
+ <h4 id="h-recommended-character-sets" resource="#h-recommended-character-sets"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.2 </span>Recommended Character Sets</span></h4>
<p>A <a href="#dfn-document-instance" class="internalDFN">Document Instance</a> <em class="rfc2119" title="SHOULD">SHOULD</em> be authored using characters selected from the sets specified in <a href="#recommended-unicode-code-points-per-language" class="sec-ref"><span class="secno">B.</span> <span class="sec-title">Recommended Character Sets</span></a>.</p>
</section>
<section id="reference-fonts-1" typeof="bibo:Chapter" resource="#reference-fonts-1" property="bibo:hasPart">
- <h3 id="h-reference-fonts-1" resource="#h-reference-fonts-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">7.3 </span>Reference Fonts</span></h3>
+ <h4 id="h-reference-fonts-1" resource="#h-reference-fonts-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.3 </span>Reference Fonts</span></h4>
<p>The flow of text within a region depends the dimensions and spacing (kerning) between individual glyphs. The following allows, for instance, region extents to be set such that text flows without clipping.</p>
<p>When processing glyphs that match the combinations of computed font family and code point listed in <a href="#reference-fonts" class="sec-ref"><span class="secno">A.</span> <span class="sec-title">Reference Fonts</span></a>, e.g. during layout, a <a href="#dfn-presentation-processor" class="internalDFN">presentation processor</a> or <a href="#dfn-transformation-processor" class="internalDFN">transformation processor</a> <em class="rfc2119" title="SHALL">SHALL</em> use glyph metrics equal to the metrics of the specified reference font, unless the glyph is not defined by the reference font.</p>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note13"><span>Note</span></div><p class="">Implementations can use fonts other than those specified in <a href="#reference-fonts" class="sec-ref"><span class="secno">A.</span> <span class="sec-title">Reference Fonts</span></a>. Two fonts with equal metrics can have a different appearance, but flow identically.</p></div>
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note12"><span>Note</span></div><p class="">Implementations can use fonts other than those specified in <a href="#reference-fonts" class="sec-ref"><span class="secno">A.</span> <span class="sec-title">Reference Fonts</span></a>. Two fonts with equal metrics can have a different appearance, but flow identically.</p></div>
</section>
<section id="features" typeof="bibo:Chapter" resource="#features" property="bibo:hasPart">
- <h3 id="h-features" resource="#h-features"><span property="xhv:role" resource="xhv:heading"><span class="secno">7.4 </span>Features</span></h3>
+ <h4 id="h-features" resource="#h-features"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.8.4 </span>Features</span></h4>
<p>The <a href="#dfn-document-instance" class="internalDFN">Document Instance</a> <em class="rfc2119" title="SHALL">SHALL</em> conform to the following table:</p>
@@ -1636,8 +1626,7 @@
<tr>
<td><code>#displayAlign</code></td>
- <td><em class="rfc2119" title="MAY">MAY</em> be used. The initial value of <code>tts:displayAlign</code> <em class="rfc2119" title="SHALL">SHALL</em> be "after" for the <a href="#dfn-default-region" class="internalDFN">Default Region</a>. NOTE: This
- is consistent with [<cite><a class="bibref" href="#bib-ST2052-1">ST2052-1</a></cite>].</td>
+ <td><em class="rfc2119" title="MAY">MAY</em> be used.</td>
</tr>
<tr>
@@ -1798,8 +1787,7 @@
<tr>
<td><code>#textAlign</code></td>
- <td><em class="rfc2119" title="MAY">MAY</em> be used. The initial value of <code>tts:textAlign</code> <em class="rfc2119" title="SHALL">SHALL</em> be "center" for the default region. NOTE: This
- is consistent with [<cite><a class="bibref" href="#bib-ST2052-1">ST2052-1</a></cite>].</td>
+ <td><em class="rfc2119" title="MAY">MAY</em> be used.</td>
</tr>
<tr>
@@ -1890,16 +1878,16 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note14"><span>Note</span></div><p class="">[<cite><a class="bibref" href="#bib-EBU-TT-D">EBU-TT-D</a></cite>] specifies that the attributes <code>ebutts:linePadding</code> and <code>ebutts:multiRowAlign</code> can only be a children of the <code>style</code> element.</p></div>
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note13"><span>Note</span></div><p class="">[<cite><a class="bibref" href="#bib-EBU-TT-D">EBU-TT-D</a></cite>] specifies that the attributes <code>ebutts:linePadding</code> and <code>ebutts:multiRowAlign</code> can only be a children of the <code>style</code> element.</p></div>
</section>
</section>
<section id="image-profile-constraints" typeof="bibo:Chapter" resource="#image-profile-constraints" property="bibo:hasPart">
- <!--OddPage--><h2 id="h-image-profile-constraints" resource="#h-image-profile-constraints"><span property="xhv:role" resource="xhv:heading"><span class="secno">8. </span>Image Profile Constraints</span></h2>
+ <h3 id="h-image-profile-constraints" resource="#h-image-profile-constraints"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9 </span>Image Profile Constraints</span></h3>
<section id="image-profile-designator" typeof="bibo:Chapter" resource="#image-profile-designator" property="bibo:hasPart">
- <h3 id="h-image-profile-designator" resource="#h-image-profile-designator"><span property="xhv:role" resource="xhv:heading"><span class="secno">8.1 </span>Profile Designator</span></h3>
+ <h4 id="h-image-profile-designator" resource="#h-image-profile-designator"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9.1 </span>Profile Designator</span></h4>
<p>This profile is associated with the following profile designator:</p>
@@ -1919,24 +1907,24 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note15"><span>Note</span></div><p class="">As specified in <a href="#common-features" class="sec-ref"><span class="secno">6.10</span> <span class="sec-title">Features</span></a>, the presence of the <code>ttp:profile</code> attribute is
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note14"><span>Note</span></div><p class="">As specified in <a href="#common-features" class="sec-ref"><span class="secno">6.7.4</span> <span class="sec-title">Features</span></a>, the presence of the <code>ttp:profile</code> attribute is
not required by this profile. The profile designator specified above is intended to be generally used to signal conformance
of a <a href="#dfn-document-instance" class="internalDFN">Document Instance</a> to the profile. The details of such signaling depends on the application, and can, for instance, use
metadata structures out-of-band of the <a href="#dfn-document-instance" class="internalDFN">Document Instance</a>.</p></div>
</section>
<section id="presented-image" typeof="bibo:Chapter" resource="#presented-image" property="bibo:hasPart">
- <h3 id="h-presented-image" resource="#h-presented-image"><span property="xhv:role" resource="xhv:heading"><span class="secno">8.2 </span>Presented Image</span></h3>
+ <h4 id="h-presented-image" resource="#h-presented-image"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9.2 </span>Presented Image</span></h4>
<section id="definition" typeof="bibo:Chapter" resource="#definition" property="bibo:hasPart">
- <h4 id="h-definition" resource="#h-definition"><span property="xhv:role" resource="xhv:heading"><span class="secno">8.2.1 </span>Definition</span></h4>
+ <h5 id="h-definition" resource="#h-definition"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9.2.1 </span>Definition</span></h5>
<p>A <dfn id="dfn-presented-image">presented image</dfn> is a <code>div</code> element with a <code>smpte:backgroundImage</code> attribute that does
not extend beyond a <a href="#dfn-presented-region" class="internalDFN">presented region</a>.</p>
</section>
<section id="number-per-region" typeof="bibo:Chapter" resource="#number-per-region" property="bibo:hasPart">
- <h4 id="h-number-per-region" resource="#h-number-per-region"><span property="xhv:role" resource="xhv:heading"><span class="secno">8.2.2 </span>Number per Region</span></h4>
+ <h5 id="h-number-per-region" resource="#h-number-per-region"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9.2.2 </span>Number per Region</span></h5>
<p>In a given synchronic document, there shall be at most one <a href="#dfn-presented-image" class="internalDFN">presented image</a> per <a href="#dfn-presented-region" class="internalDFN">presented region</a>.</p>
@@ -1944,7 +1932,7 @@
</section>
<section id="div-element" typeof="bibo:Chapter" resource="#div-element" property="bibo:hasPart">
- <h3 id="h-div-element" resource="#h-div-element"><span property="xhv:role" resource="xhv:heading"><span class="secno">8.3 </span><code>div</code> element</span></h3>
+ <h4 id="h-div-element" resource="#h-div-element"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9.3 </span><code>div</code> element</span></h4>
<p>If a <code>smpte:backgroundImage</code> attribute is applied to a <code>div</code> element:
@@ -1963,11 +1951,11 @@
<p></p>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note16"><span>Note</span></div><p class="">In [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], <code>tts:extent</code> and <code>tts:origin</code> do not apply to <code>div</code> elements. In order to individually position multiple <code>div</code> elements, each <code>div</code> can be associated with a distinct <code>region</code> with the desired <code>tts:extent</code> and <code>tts:origin</code>.</p></div>
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note15"><span>Note</span></div><p class="">In [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], <code>tts:extent</code> and <code>tts:origin</code> do not apply to <code>div</code> elements. In order to individually position multiple <code>div</code> elements, each <code>div</code> can be associated with a distinct <code>region</code> with the desired <code>tts:extent</code> and <code>tts:origin</code>.</p></div>
</section>
<section id="features-1" typeof="bibo:Chapter" resource="#features-1" property="bibo:hasPart">
- <h3 id="h-features-1" resource="#h-features-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">8.4 </span>Features</span></h3>
+ <h4 id="h-features-1" resource="#h-features-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.9.4 </span>Features</span></h4>
<p>The features included in a <a href="#dfn-document-instance" class="internalDFN">Document Instance</a> <em class="rfc2119" title="SHALL">SHALL</em> conform to the Table below:</p>
@@ -2126,11 +2114,11 @@
</section>
<section id="hypothetical-render-model" typeof="bibo:Chapter" resource="#hypothetical-render-model" property="bibo:hasPart">
- <!--OddPage--><h2 id="h-hypothetical-render-model" resource="#h-hypothetical-render-model"><span property="xhv:role" resource="xhv:heading"><span class="secno">9. </span>Hypothetical Render Model</span></h2>
+ <h3 id="h-hypothetical-render-model" resource="#h-hypothetical-render-model"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10 </span>Hypothetical Render Model</span></h3>
<section id="overview" typeof="bibo:Chapter" resource="#overview" property="bibo:hasPart">
- <h3 id="h-overview" resource="#h-overview"><span property="xhv:role" resource="xhv:heading"><span class="secno">9.1 </span>Overview</span></h3>
+ <h4 id="h-overview" resource="#h-overview"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10.1 </span>Overview</span></h4>
<p>This Section specifies the Hypothetical Render Model illustrated in <a href="#fig-hypothetical-render-model" class="fig-ref">Fig. <span class="figno">1</span> <span class="fig-title">
Hypothetical Render Model
@@ -2173,7 +2161,7 @@
</section>
<section id="general-1" typeof="bibo:Chapter" resource="#general-1" property="bibo:hasPart">
- <h3 id="h-general-1" resource="#h-general-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">9.2 </span>General</span></h3>
+ <h4 id="h-general-1" resource="#h-general-1"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10.2 </span>General</span></h4>
<p>The Presentation Compositor <em class="rfc2119" title="SHALL">SHALL</em> render in Presentation Buffer P<sub>n</sub> each successive intermediate synchronic
document E<sub>n</sub> using the following steps in order:</p>
@@ -2207,17 +2195,17 @@
<ul>
<li>S(E<sub>n</sub>) is the total normalized drawing area for <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> E<sub>n</sub>, as
- specified in <a href="#paint-regions" class="sec-ref"><span class="secno">9.3</span> <span class="sec-title">Paint Regions</span></a>
+ specified in <a href="#paint-regions" class="sec-ref"><span class="secno">6.10.3</span> <span class="sec-title">Paint Regions</span></a>
</li>
<li>BDraw is the normalized background drawing performance factor.</li>
<li>DUR<sub>T</sub>(E<sub>n</sub>) is the duration, in seconds, for painting the text subtitle content for intermediate
- synchronic document E<sub>n</sub>, as specified in Section <a href="#paint-text" class="sec-ref"><span class="secno">9.5</span> <span class="sec-title">Paint Text</span></a>
+ synchronic document E<sub>n</sub>, as specified in Section <a href="#paint-text" class="sec-ref"><span class="secno">6.10.5</span> <span class="sec-title">Paint Text</span></a>
</li>
<li>DUR<sub>I</sub>(E<sub>n</sub>) is the duration, in seconds, for painting the image subtitle content for intermediate
- synchronic document E<sub>n</sub>, as specified in Section <a href="#paint-images" class="sec-ref"><span class="secno">9.4</span> <span class="sec-title">Paint Images</span></a>
+ synchronic document E<sub>n</sub>, as specified in Section <a href="#paint-images" class="sec-ref"><span class="secno">6.10.4</span> <span class="sec-title">Paint Images</span></a>
</li>
</ul>
@@ -2225,7 +2213,7 @@
P<sub>n-1</sub> at the presentation time of <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> E<sub>n</sub>, making the latter
available for display.</p>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note17"><span>Note</span></div><p class="">It is possible for the contents of Presentation Buffer P<sub>n-1</sub> to never be displayed. This can
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note16"><span>Note</span></div><p class="">It is possible for the contents of Presentation Buffer P<sub>n-1</sub> to never be displayed. This can
happen if Presentation Buffer P<sub>n</sub> is copied twice to Presentation Buffer P<sub>n-1</sub> between two consecutive
video frame boundaries of the related video object.</p></div>
@@ -2258,15 +2246,15 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note18"><span>Note</span></div><p class="">BDraw effectively sets a limit on fillings regions - for example, assuming that the root container is
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note17"><span>Note</span></div><p class="">BDraw effectively sets a limit on fillings regions - for example, assuming that the root container is
ultimately rendered at 1920×1080 resolution, a BDraw of 12 s<sup>-1</sup> would correspond to a fill rate of
1920×1080×12/s=23.7×2<sup>20</sup>pixels s<sup>-1</sup>.</p></div>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note19"><span>Note</span></div><p class="">IPD effectively sets a limit on the complexity of any given <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a>.</p></div>
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note18"><span>Note</span></div><p class="">IPD effectively sets a limit on the complexity of any given <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a>.</p></div>
</section>
<section id="paint-regions" typeof="bibo:Chapter" resource="#paint-regions" property="bibo:hasPart">
- <h3 id="h-paint-regions" resource="#h-paint-regions"><span property="xhv:role" resource="xhv:heading"><span class="secno">9.3 </span>Paint Regions</span></h3>
+ <h4 id="h-paint-regions" resource="#h-paint-regions"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10.3 </span>Paint Regions</span></h4>
<p>The total normalized drawing area S(E<sub>n</sub>) for <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> E<sub>n</sub> <em class="rfc2119" title="SHALL">SHALL</em>
be</p>
@@ -2275,7 +2263,7 @@
<p>where CLEAR(E<sub>0</sub>) = 0 and CLEAR(E<sub>n | n > 0</sub>) = 1, i.e. the root container in its entirety.</p>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note20"><span>Note</span></div><p class="">To ensure consistency of the Presentation Buffer, a new <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> requires
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note19"><span>Note</span></div><p class="">To ensure consistency of the Presentation Buffer, a new <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> requires
clearing of the root container.</p></div>
<p>PAINT(E<sub>n</sub>) <em class="rfc2119" title="SHALL">SHALL</em> be the normalized area to be painted for all regions that are used in intermediate synchronic
@@ -2321,7 +2309,7 @@
</section>
<section id="paint-images" typeof="bibo:Chapter" resource="#paint-images" property="bibo:hasPart">
- <h3 id="h-paint-images" resource="#h-paint-images"><span property="xhv:role" resource="xhv:heading"><span class="secno">9.4 </span>Paint Images</span></h3>
+ <h4 id="h-paint-images" resource="#h-paint-images"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10.4 </span>Paint Images</span></h4>
<p>The Presentation Compositor <em class="rfc2119" title="SHALL">SHALL</em> paint into the Presentation Buffer P<sub>n</sub> all visible pixels of presented
images of <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> E<sub>n</sub>.</p>
@@ -2413,7 +2401,7 @@
</section>
<section id="paint-text" typeof="bibo:Chapter" resource="#paint-text" property="bibo:hasPart">
- <h3 id="h-paint-text" resource="#h-paint-text"><span property="xhv:role" resource="xhv:heading"><span class="secno">9.5 </span>Paint Text</span></h3>
+ <h4 id="h-paint-text" resource="#h-paint-text"><span property="xhv:role" resource="xhv:heading"><span class="secno">6.10.5 </span>Paint Text</span></h4>
<p>For each glyph displayed in <a href="#dfn-intermediate-synchronic-document" class="internalDFN">intermediate synchronic document</a> E<sub>n</sub>, the Presentation Compositor
<em class="rfc2119" title="SHALL">SHALL</em>:</p>
@@ -2534,7 +2522,7 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="4" role="heading" id="h-note21"><span>Note</span></div><p class="">NRGA(G<sub>i</sub>) does not take into account glyph decorations (e.g. underline), glyph effects (e.g.
+ <div class="note"><div class="note-title" aria-level="5" role="heading" id="h-note20"><span>Note</span></div><p class="">NRGA(G<sub>i</sub>) does not take into account glyph decorations (e.g. underline), glyph effects (e.g.
outline) or actual glyph aspect ratio. An implementation can determine an actual buffer size needs based on worst-case
glyph size complexity.</p></div>
@@ -2561,7 +2549,7 @@
</aside>
</section>
</section>
-
+</section>
<section class="appendix" id="reference-fonts" typeof="bibo:Chapter" resource="#reference-fonts" property="bibo:hasPart">
<!--OddPage--><h2 id="h-reference-fonts" resource="#h-reference-fonts"><span property="xhv:role" resource="xhv:heading"><span class="secno">A. </span>Reference Fonts</span></h2>
@@ -2610,7 +2598,7 @@
</tbody>
</table>
- <div class="note"><div class="note-title" aria-level="3" role="heading" id="h-note22"><span>Note</span></div><p class="">proportionalSansSerif is not used in practice for Hebrew and Arabic captions and subtitles.</p></div>
+ <div class="note"><div class="note-title" aria-level="3" role="heading" id="h-note21"><span>Note</span></div><p class="">proportionalSansSerif is not used in practice for Hebrew and Arabic captions and subtitles.</p></div>
</section>