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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/172573">172573</a></dd>
<dt>Author</dt> <dd>lforschler@apple.com</dd>
<dt>Date</dt> <dd>2014-08-13 21:21:25 -0700 (Wed, 13 Aug 2014)</dd>
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<h3>Log Message</h3>
<pre>Merged <a href="http://trac.webkit.org/projects/webkit/changeset/172538">r172538</a>. <rdar://problem/17665229></pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari6001branchSourceWebCoreChangeLog">branches/safari-600.1-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari6001branchSourceWebCoreModulesmediasourceSourceBuffercpp">branches/safari-600.1-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp</a></li>
</ul>
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<h3>Diff</h3>
<a id="branchessafari6001branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1-branch/Source/WebCore/ChangeLog (172572 => 172573)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1-branch/Source/WebCore/ChangeLog 2014-08-14 04:18:44 UTC (rev 172572)
+++ branches/safari-600.1-branch/Source/WebCore/ChangeLog 2014-08-14 04:21:25 UTC (rev 172573)
</span><span class="lines">@@ -1,5 +1,22 @@
</span><span class="cx"> 2014-08-13 Lucas Forschler <lforschler@apple.com>
</span><span class="cx">
</span><ins>+ Merge r172538
+
+ 2014-08-13 Jer Noble <jer.noble@apple.com>
+
+ [MSE] Replacing existing samples with overlapping new samples will cause playback to stutter.
+ https://bugs.webkit.org/show_bug.cgi?id=135902
+
+ Reviewed by Eric Carlson.
+
+ Only mark the TrackBuffer as needing re-enqueueing if the samples removed by overlapping samples
+ themselves overlap with potentially enqueued but not yet displayed frames.
+
+ * Modules/mediasource/SourceBuffer.cpp:
+ (WebCore::SourceBuffer::sourceBufferPrivateDidReceiveSample):
+
+2014-08-13 Lucas Forschler <lforschler@apple.com>
+
</ins><span class="cx"> Merge r172534
</span><span class="cx">
</span><span class="cx"> 2014-08-13 Simon Fraser <simon.fraser@apple.com>
</span></span></pre></div>
<a id="branchessafari6001branchSourceWebCoreModulesmediasourceSourceBuffercpp"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp (172572 => 172573)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp 2014-08-14 04:18:44 UTC (rev 172572)
+++ branches/safari-600.1-branch/Source/WebCore/Modules/mediasource/SourceBuffer.cpp 2014-08-14 04:21:25 UTC (rev 172573)
</span><span class="lines">@@ -1193,9 +1193,16 @@
</span><span class="cx"> trackBuffer.samples.removeSample(samplePair.second.get());
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ // Only force the TrackBuffer to re-enqueue if the removed ranges overlap with enqueued and possibly
+ // not yet displayed samples.
+ MediaTime currentMediaTime = MediaTime::createWithDouble(m_source->currentTime());
+ PlatformTimeRanges possiblyEnqueuedRanges(currentMediaTime, trackBuffer.lastEnqueuedPresentationTime);
+ possiblyEnqueuedRanges.intersectWith(erasedRanges->ranges());
+ if (possiblyEnqueuedRanges.length())
+ trackBuffer.needsReenqueueing = true;
+
</ins><span class="cx"> erasedRanges->invert();
</span><span class="cx"> m_buffered->intersectWith(*erasedRanges.get());
</span><del>- trackBuffer.needsReenqueueing = true;
</del><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> // 1.17 If spliced audio frame is set:
</span></span></pre>
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