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spec/Overview.html 1.1668 2497 Prevent firing double 'waiting' events i

From: poot <cvsmail@w3.org>
Date: Mon, 1 Dec 2008 21:11:11 +0900 (JST)
To: public-html-diffs@w3.org
Message-Id: <20081201121111.4DA952BBEA@toro.w3.mag.keio.ac.jp>

Prevent firing double 'waiting' events in play(). Make sure we fire a
'timeupdate' when we begin playing, even if we only paused very briefly.
(whatwg r2497)

play()
http://people.w3.org/mike/diffs/html5/spec/Overview.1.1668.html#dom-media-play
pause()
http://people.w3.org/mike/diffs/html5/spec/Overview.1.1668.html#dom-media-pause
When a media element is potentially playing and its Document is an active document, its current playback position must increase monotonically at playbackRate units of media time per unit time of wall clock time.
http://people.w3.org/mike/diffs/html5/spec/Overview.1.1668.html#media-playback

http://people.w3.org/mike/diffs/html5/spec/Overview.diff.html
http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.1667&r2=1.1668&f=h
http://html5.org/tools/web-apps-tracker?from=2496&to=2497

===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.1667
retrieving revision 1.1668
diff -u -d -r1.1667 -r1.1668
--- Overview.html	1 Dec 2008 11:36:37 -0000	1.1667
+++ Overview.html	1 Dec 2008 12:08:27 -0000	1.1668
@@ -14781,7 +14781,8 @@
     <p class=note>This <a href=#seekUpdate>will cause</a> the user
     agent to <a href=#queue-a-task>queue a task</a> to <a href=#fire-a-simple-event>fire a simple
     event</a> called <code title=event-timeupdate><a href=#event-timeupdate>timeupdate</a></code> at the <a href=#media-element>media
-    element</a>.</p>
+    element</a>.</p> <!-- if we're already playing at this point,
+    it might also fire 'waiting' -->
 
    </li>
 
@@ -14792,19 +14793,17 @@
 
     <p>If this changed the value of <code title=dom-media-paused><a href=#dom-media-paused>paused</a></code>, the user agent must
     <a href=#queue-a-task>queue a task</a> to <a href=#fire-a-simple-event>fire a simple event</a>
-    called <code title=event-play><a href=#event-play>play</a></code> at the element.</p>
+    called <code title=event-play><a href=#event-play>play</a></code> at the element; if, in
+    addition, the <a href=#media-element>media element</a>'s <code title=dom-media-readyState><a href=#dom-media-readystate>readyState</a></code> attribute has a
+    value lower than <code title=dom-media-HAVE_FUTURE_DATA><a href=#dom-media-have_future_data>HAVE_FUTURE_DATA</a></code>, the
+    user agent must also <a href=#queue-a-task>queue a task</a> to <a href=#fire-a-simple-event>fire a
+    simple event</a> called <code title=event-waiting><a href=#event-waiting>waiting</a></code> at the element.</p>
 
    </li>
 
    <li><p>The <a href=#media-element>media element</a>'s <a href=#autoplaying-flag>autoplaying
    flag</a> must be set to false.</li>
 
-   <li><p>If the <a href=#media-element>media element</a>'s <code title=dom-media-readyState><a href=#dom-media-readystate>readyState</a></code> attribute has a
-   value lower than <code title=dom-media-HAVE_FUTURE_DATA><a href=#dom-media-have_future_data>HAVE_FUTURE_DATA</a></code>, the
-   user agent must <a href=#queue-a-task>queue a task</a> to <a href=#fire-a-simple-event>fire a simple
-   event</a> called <code title=event-waiting><a href=#event-waiting>waiting</a></code> at
-   the element.</li>
-
    <li><p>The method must then return.</li>
 
   </ol><hr><p>When the <dfn id=dom-media-pause title=dom-media-pause><code>pause()</code></dfn>
@@ -14888,13 +14887,16 @@
    steps.</li>
 
    <li><p>If the time was reached through the usual monotonic increase
-   of the current playback position during normal playback, and if the
-   user agent has not fired a <code title=event-timeupdate><a href=#event-timeupdate>timeupdate</a></code> event at the element in
-   the past 15 to 250ms, the user agent must then <a href=#queue-a-task>queue a
-   task</a> to <a href=#fire-a-simple-event>fire a simple event</a> called <code title=event-timeupdate><a href=#event-timeupdate>timeupdate</a></code> at the element. (In the
-   other cases, such as explicit seeks, relevant events get fired as
-   part of the overall process of changing the current playback
-   position.)</p>
+   of the current playback position during normal playback, and if
+   either the user agent has not fired a <code title=event-timeupdate><a href=#event-timeupdate>timeupdate</a></code> event at the element in
+   the past 15 to 250ms, or there has been an instant since the last
+   time such an event was fired that the element was not
+   <a href=#potentially-playing>potentially playing</a>, then the user agent must
+   <a href=#queue-a-task>queue a task</a> to <a href=#fire-a-simple-event>fire a simple event</a>
+   called <code title=event-timeupdate><a href=#event-timeupdate>timeupdate</a></code> at the
+   element. (In the other cases, such as explicit seeks, relevant
+   events get fired as part of the overall process of changing the
+   current playback position.)</p>
 
    <p class=note>The event thus is not to be fired faster than about
    66Hz or slower than 4Hz. User agents are encouraged to vary the
Received on Monday, 1 December 2008 12:11:48 GMT

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