[giow] (0) (WIP - MIMESNIFF has not yet been updated accordingly) Cha…

…nge the spec to use MIMESNIFF rules for text tracks instead of blindly honouring MIME types.

Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=13995

git-svn-id: http://svn.whatwg.org/webapps@6721 340c8d12-0b0e-0410-8428-c7bf67bfef74

complete.html

@@ -31397,30 +31397,25 @@ <h6 id=sourcing-out-of-band-text-tracks><span class=secno>4.8.10.12.3 </span>Sou
     <p>The <a href=#concept-task title=concept-task>tasks</a> <a href=#queue-a-task title="queue
     a task">queued</a> by the <a href=#fetch title=fetch>fetching
     algorithm</a> on the <a href=#networking-task-source>networking task source</a> to
-    process the data as it is being fetched must examine the
-    resource's <a href=#content-type title=Content-Type>Content Type
-    metadata</a>, once it is available, if it ever is. If no <a href=#content-type title=Content-Type>Content Type metadata</a> is ever
-    available, or if the type is not recognised as a text track
-    format, then the resource's format must be assumed to be
-    unsupported (this causes the load to fail, as described below). If
-    a type is obtained, and represents a supported text track format,
-    then the resource's data must be passed to the appropriate parser
+    process the data as it is being fetched must <a href=#content-type-sniffing-0 title="Content-Type sniffing">determine the sniffed type of a the
+    resource</a>. If the sniffed type of the resource is not a
+    supported text track format, the load will fail, as described
+    below. Otherwise, the resource's data must be passed to the
+    appropriate parser
 <!--TTVTT-->
-    (e.g. the <a href=#webvtt-parser>WebVTT parser</a> if the <a href=#content-type title=Content-Type>Content Type metadata</a> is
-    <code><a href=#text/vtt>text/vtt</a></code>)
+    (e.g. the <a href=#webvtt-parser>WebVTT parser</a> if the file starts with the "<code title="">WEBVTT</code>" signature)
 <!--TTVTT-->
-    as it is received, with the <a href=#text-track-list-of-cues>text
-    track list of cues</a> being used for that parser's output.</p>
+    as it is received, with the <a href=#text-track-list-of-cues>text track list of cues</a>
+    being used for that parser's output.</p>
 
     <p>If the <a href=#fetch title=fetch>fetching algorithm</a> fails for
     any reason (network error, the server returns an error code, a
     cross-origin check fails, etc), if <var title="">URL</var> is the
-    empty string, or if the fetched resource is not in a supported
-    format, then <a href=#queue-a-task>queue a task</a> to first change the
-    <a href=#text-track-readiness-state>text track readiness state</a> to <a href=#text-track-failed-to-load title="text track
-    failed to load">failed to load</a> and then <a href=#fire-a-simple-event>fire a simple
-    event</a> named <code title=event-error>error</code> at the
-    <code><a href=#the-track-element>track</a></code> element; and then, once that <a href=#concept-task title=concept-task>task</a> is <a href=#queue-a-task title="queue a
+    empty string, or if the sniffed type of the resource is not a
+    supported text track format, then <a href=#queue-a-task>queue a task</a> to
+    first change the <a href=#text-track-readiness-state>text track readiness state</a> to <a href=#text-track-failed-to-load title="text track failed to load">failed to load</a> and then
+    <a href=#fire-a-simple-event>fire a simple event</a> named <code title=event-error>error</code> at the <code><a href=#the-track-element>track</a></code>
+    element; and then, once that <a href=#concept-task title=concept-task>task</a> is <a href=#queue-a-task title="queue a
     task">queued</a>, move on to the step below labeled
     <i>monitoring</i>.</p>
 

index

@@ -31397,30 +31397,25 @@ interface <dfn id=mediacontroller>MediaController</dfn> {
     <p>The <a href=#concept-task title=concept-task>tasks</a> <a href=#queue-a-task title="queue
     a task">queued</a> by the <a href=#fetch title=fetch>fetching
     algorithm</a> on the <a href=#networking-task-source>networking task source</a> to
-    process the data as it is being fetched must examine the
-    resource's <a href=#content-type title=Content-Type>Content Type
-    metadata</a>, once it is available, if it ever is. If no <a href=#content-type title=Content-Type>Content Type metadata</a> is ever
-    available, or if the type is not recognised as a text track
-    format, then the resource's format must be assumed to be
-    unsupported (this causes the load to fail, as described below). If
-    a type is obtained, and represents a supported text track format,
-    then the resource's data must be passed to the appropriate parser
+    process the data as it is being fetched must <a href=#content-type-sniffing-0 title="Content-Type sniffing">determine the sniffed type of a the
+    resource</a>. If the sniffed type of the resource is not a
+    supported text track format, the load will fail, as described
+    below. Otherwise, the resource's data must be passed to the
+    appropriate parser
 <!--TTVTT-->
-    (e.g. the <a href=#webvtt-parser>WebVTT parser</a> if the <a href=#content-type title=Content-Type>Content Type metadata</a> is
-    <code><a href=#text/vtt>text/vtt</a></code>)
+    (e.g. the <a href=#webvtt-parser>WebVTT parser</a> if the file starts with the "<code title="">WEBVTT</code>" signature)
 <!--TTVTT-->
-    as it is received, with the <a href=#text-track-list-of-cues>text
-    track list of cues</a> being used for that parser's output.</p>
+    as it is received, with the <a href=#text-track-list-of-cues>text track list of cues</a>
+    being used for that parser's output.</p>
 
     <p>If the <a href=#fetch title=fetch>fetching algorithm</a> fails for
     any reason (network error, the server returns an error code, a
     cross-origin check fails, etc), if <var title="">URL</var> is the
-    empty string, or if the fetched resource is not in a supported
-    format, then <a href=#queue-a-task>queue a task</a> to first change the
-    <a href=#text-track-readiness-state>text track readiness state</a> to <a href=#text-track-failed-to-load title="text track
-    failed to load">failed to load</a> and then <a href=#fire-a-simple-event>fire a simple
-    event</a> named <code title=event-error>error</code> at the
-    <code><a href=#the-track-element>track</a></code> element; and then, once that <a href=#concept-task title=concept-task>task</a> is <a href=#queue-a-task title="queue a
+    empty string, or if the sniffed type of the resource is not a
+    supported text track format, then <a href=#queue-a-task>queue a task</a> to
+    first change the <a href=#text-track-readiness-state>text track readiness state</a> to <a href=#text-track-failed-to-load title="text track failed to load">failed to load</a> and then
+    <a href=#fire-a-simple-event>fire a simple event</a> named <code title=event-error>error</code> at the <code><a href=#the-track-element>track</a></code>
+    element; and then, once that <a href=#concept-task title=concept-task>task</a> is <a href=#queue-a-task title="queue a
     task">queued</a>, move on to the step below labeled
     <i>monitoring</i>.</p>
 

source

@@ -34244,32 +34244,28 @@ interface <dfn>MediaController</dfn> {
     <p>The <span title="concept-task">tasks</span> <span title="queue
     a task">queued</span> by the <span title="fetch">fetching
     algorithm</span> on the <span>networking task source</span> to
-    process the data as it is being fetched must examine the
-    resource's <span title="Content-Type">Content Type
-    metadata</span>, once it is available, if it ever is. If no <span
-    title="Content-Type">Content Type metadata</span> is ever
-    available, or if the type is not recognised as a text track
-    format, then the resource's format must be assumed to be
-    unsupported (this causes the load to fail, as described below). If
-    a type is obtained, and represents a supported text track format,
-    then the resource's data must be passed to the appropriate parser
+    process the data as it is being fetched must <span
+    title="Content-Type sniffing">determine the sniffed type of a the
+    resource</span>. If the sniffed type of the resource is not a
+    supported text track format, the load will fail, as described
+    below. Otherwise, the resource's data must be passed to the
+    appropriate parser
 <!--END w3c-html--><!--TTVTT-->
-    (e.g. the <span>WebVTT parser</span> if the <span
-    title="Content-Type">Content Type metadata</span> is
-    <code>text/vtt</code>)
+    (e.g. the <span>WebVTT parser</span> if the file starts with the "<code title="">WEBVTT</code>" signature)
 <!--START w3c-html--><!--TTVTT-->
-    as it is received, with the <span>text
-    track list of cues</span> being used for that parser's output.</p>
+    as it is received, with the <span>text track list of cues</span>
+    being used for that parser's output.</p>
 
     <p>If the <span title="fetch">fetching algorithm</span> fails for
     any reason (network error, the server returns an error code, a
     cross-origin check fails, etc), if <var title="">URL</var> is the
-    empty string, or if the fetched resource is not in a supported
-    format, then <span>queue a task</span> to first change the
-    <span>text track readiness state</span> to <span title="text track
-    failed to load">failed to load</span> and then <span>fire a simple
-    event</span> named <code title="event-error">error</code> at the
-    <code>track</code> element; and then, once that <span
+    empty string, or if the sniffed type of the resource is not a
+    supported text track format, then <span>queue a task</span> to
+    first change the <span>text track readiness state</span> to <span
+    title="text track failed to load">failed to load</span> and then
+    <span>fire a simple event</span> named <code
+    title="event-error">error</code> at the <code>track</code>
+    element; and then, once that <span
     title="concept-task">task</span> is <span title="queue a
     task">queued</span>, move on to the step below labeled
     <i>monitoring</i>.</p>