Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: f17044b41c9006fbcf0cb7b9075368aa703d268a
https://github.com/WebKit/WebKit/commit/f17044b41c9006fbcf0cb7b9075368aa703d268a
Author: Gavin Phillips <[email protected]>
Date: 2025-12-16 (Tue, 16 Dec 2025)
Changed paths:
M Source/WebCore/Modules/mediasource/SampleMap.cpp
M Source/WebCore/Modules/mediasource/SampleMap.h
M Source/WebCore/platform/graphics/avfoundation/objc/ImageDecoderAVFObjC.mm
Log Message:
-----------
ImageDecoderAVFObjC::createFrameImageAtIndex should ensure that the cursor is
valid when rewinding to find earlier sample
https://bugs.webkit.org/show_bug.cgi?id=301185
rdar://162449335
Reviewed by Jer Noble.
ImageDecoderAVFObjC::createFrameImageAtIndex could go OOB when we search
for a decodeOrder frame which comes earlier than the first sync frame.
This change ensures that m_cursor always remains valid during this search.
* Source/WebCore/Modules/mediasource/SampleMap.cpp:
(WebCore::DecodeOrderSampleMap::findSyncSamplePriorToDecodeKey):
* Source/WebCore/Modules/mediasource/SampleMap.h:
* Source/WebCore/platform/graphics/avfoundation/objc/ImageDecoderAVFObjC.mm:
(WebCore::ImageDecoderAVFObjC::createFrameImageAtIndex):
Originally-landed-as: 301765.131@safari-7623-branch (db3be24f9f5b).
rdar://166338064
Canonical link: https://commits.webkit.org/304558@main
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