Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 7707a5ea4ea4deae99952e8681de55e6f2940f14
https://github.com/WebKit/WebKit/commit/7707a5ea4ea4deae99952e8681de55e6f2940f14
Author: Jer Noble <jer.no...@apple.com>
Date: 2025-09-11 (Thu, 11 Sep 2025)
Changed paths:
M
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm
M Source/WebCore/platform/graphics/cocoa/VideoMediaSampleRenderer.h
M Source/WebCore/platform/graphics/cocoa/VideoMediaSampleRenderer.mm
Log Message:
-----------
[iOS] VTDecompressionSession is not torn down when app is backgrounded
rdar://157599848
https://bugs.webkit.org/show_bug.cgi?id=298674
Reviewed by Jean-Yves Avenard and Youenn Fablet.
When the MediaSourcePrefersDecompressionSession preference is enabled, a
VTDecompressionSession is
created and used to decode video frames before enqueueing them for display.
However this decompression
session is not torn down when the app moves to the background state, unlike the
decompression session
used internally in AVSampleBufferDisplayLayer. This causes various system
processes to use more memory
in this state, keeping server-side objects alive and in some cases keeping
server processes themselves
from being closed.
For paused players, tear down the decompression session when moving to
background; it will be silently
recreated the next time playback begins.
*
Source/WebCore/platform/graphics/avfoundation/objc/MediaPlayerPrivateMediaSourceAVFObjC.mm:
(WebCore::MediaPlayerPrivateMediaSourceAVFObjC::applicationWillResignActive):
* Source/WebCore/platform/graphics/cocoa/VideoMediaSampleRenderer.h:
* Source/WebCore/platform/graphics/cocoa/VideoMediaSampleRenderer.mm:
(WebCore::VideoMediaSampleRenderer::invalidateDecompressionSession):
Canonical link: https://commits.webkit.org/299841@main
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