Title: [244014] releases/WebKitGTK/webkit-2.24/Source/WebCore
- Revision
- 244014
- Author
- carlo...@webkit.org
- Date
- 2019-04-08 05:39:43 -0700 (Mon, 08 Apr 2019)
Log Message
Merge r243341 - Inband Text Track cues interspersed with Data cues can display out of order.
https://bugs.webkit.org/show_bug.cgi?id=196095
Reviewed by Eric Carlson.
The compareCueIntervalForDisplay() comparator depends on a virtual function, isPositionedAbove(TextTrackCue* other),
but this comparison returns inconsistent results for cueA->isPositionedAbove(cueB) and cueB->isPositionedAbove(cueA)
if the two cues are different subclasses of TextTrackCue.
The underlying algorithm should be fixed in a future patch, but for now, remove all non-displaying cues from the array
of activeCues before sorting, rather than after when iterating over the sorted list of activeCues.
* html/shadow/MediaControlElements.cpp:
(WebCore::MediaControlTextTrackContainerElement::updateDisplay):
Modified Paths
Diff
Modified: releases/WebKitGTK/webkit-2.24/Source/WebCore/ChangeLog (244013 => 244014)
--- releases/WebKitGTK/webkit-2.24/Source/WebCore/ChangeLog 2019-04-08 12:39:39 UTC (rev 244013)
+++ releases/WebKitGTK/webkit-2.24/Source/WebCore/ChangeLog 2019-04-08 12:39:43 UTC (rev 244014)
@@ -1,3 +1,20 @@
+2019-03-21 Jer Noble <jer.no...@apple.com>
+
+ Inband Text Track cues interspersed with Data cues can display out of order.
+ https://bugs.webkit.org/show_bug.cgi?id=196095
+
+ Reviewed by Eric Carlson.
+
+ The compareCueIntervalForDisplay() comparator depends on a virtual function, isPositionedAbove(TextTrackCue* other),
+ but this comparison returns inconsistent results for cueA->isPositionedAbove(cueB) and cueB->isPositionedAbove(cueA)
+ if the two cues are different subclasses of TextTrackCue.
+
+ The underlying algorithm should be fixed in a future patch, but for now, remove all non-displaying cues from the array
+ of activeCues before sorting, rather than after when iterating over the sorted list of activeCues.
+
+ * html/shadow/MediaControlElements.cpp:
+ (WebCore::MediaControlTextTrackContainerElement::updateDisplay):
+
2019-03-21 Zalan Bujtas <za...@apple.com>
Do not insert the first-letter anonymous container until after we've constructed the first-letter renderer.
Modified: releases/WebKitGTK/webkit-2.24/Source/WebCore/html/shadow/MediaControlElements.cpp (244013 => 244014)
--- releases/WebKitGTK/webkit-2.24/Source/WebCore/html/shadow/MediaControlElements.cpp 2019-04-08 12:39:39 UTC (rev 244013)
+++ releases/WebKitGTK/webkit-2.24/Source/WebCore/html/shadow/MediaControlElements.cpp 2019-04-08 12:39:43 UTC (rev 244014)
@@ -1171,6 +1171,20 @@
if (countChildNodes() < activeCues.size())
removeChildren();
+ activeCues.removeAllMatching([] (CueInterval& cueInterval) {
+ if (!cueInterval.data() || !cueInterval.data()->isRenderable())
+ return true;
+
+ RefPtr<VTTCue> cue = toVTTCue(cueInterval.data());
+
+ return !cue->isRenderable()
+ || !cue->track()
+ || !cue->track()->isRendered()
+ || cue->track()->mode() == TextTrack::Mode::Disabled
+ || !cue->isActive()
+ || cue->text().isEmpty();
+ });
+
// Sort the active cues for the appropriate display order. For example, for roll-up
// or paint-on captions, we need to add the cues in reverse chronological order,
// so that the newest captions appear at the bottom.
@@ -1183,22 +1197,13 @@
if (!mediaController()->closedCaptionsVisible())
continue;
- RefPtr<TextTrackCue> textTrackCue = activeCues[i].data();
- if (!textTrackCue->isRenderable())
+ RefPtr<VTTCue> cue = toVTTCue(activeCues[i].data());
+ ASSERT(cue);
+ if (!cue)
continue;
- RefPtr<VTTCue> cue = toVTTCue(textTrackCue.get());
-
- ASSERT(cue->isActive());
- if (!cue->track() || !cue->track()->isRendered() || !cue->isActive() || cue->text().isEmpty())
- continue;
-
LOG(Media, "MediaControlTextTrackContainerElement::updateDisplay(%p) - adding and positioning cue #%zu: \"%s\", start=%.2f, end=%.2f, line=%.2f", this, i, cue->text().utf8().data(), cue->startTime(), cue->endTime(), cue->line());
-
Ref<VTTCueBox> displayBox = cue->getDisplayTree(m_videoDisplaySize.size(), m_fontSize);
- if (cue->track()->mode() == TextTrack::Mode::Disabled)
- continue;
-
RefPtr<VTTRegion> region = cue->track()->regions()->getRegionById(cue->regionId());
if (!region) {
// If cue has an empty text track cue region identifier or there is no
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