Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 99f22a58eddac74edd87db5f2a1c3f004bdebb84
https://github.com/WebKit/WebKit/commit/99f22a58eddac74edd87db5f2a1c3f004bdebb84
Author: Jer Noble <[email protected]>
Date: 2025-10-25 (Sat, 25 Oct 2025)
Changed paths:
M Source/WebCore/platform/graphics/cocoa/WebCoreDecompressionSession.h
M Source/WebCore/platform/graphics/cocoa/WebCoreDecompressionSession.mm
Log Message:
-----------
[Perf] Anly check if the decompression session accepts a format description
when the format changes
rdar://163408718
https://bugs.webkit.org/show_bug.cgi?id=301467
Reviewed by Jean-Yves Avenard.
Performance testing shows an observable CPU increase in the GPU and videocodecd
processes as
a result of calling VTDecompressionSessionCanAcceptFormatDescription(). This is
needed in order
to determine whether the decompression session needs to be torn down and
re-built when the
video stream's format changes. However, it doesn't need to be called for every
frame; its safe
to assume that the decompression session can continue to decode the same format.
* Source/WebCore/platform/graphics/cocoa/WebCoreDecompressionSession.h:
* Source/WebCore/platform/graphics/cocoa/WebCoreDecompressionSession.mm:
(WebCore::WebCoreDecompressionSession::ensureDecompressionSessionForSample):
Canonical link: https://commits.webkit.org/302151@main
To unsubscribe from these emails, change your notification settings at
https://github.com/WebKit/WebKit/settings/notifications
