Bug 264799

Summary:	[MSE] SourceBufferPrivate::didUpdateFormatDescriptionForTrackId can run out of order.
Product:	WebKit	Reporter:	Jean-Yves Avenard [:jya] <jean-yves.avenard>
Component:	Media	Assignee:	Jean-Yves Avenard [:jya] <jean-yves.avenard>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:	253789
Bug Blocks:

Description Jean-Yves Avenard [:jya] 2023-11-14 00:38:22 PST

In bug 253789, didUpdateFormatDescriptionForTrackId was added as a callback to the SourceBufferParser .

However, processing the TrackInfo, which should always be after we've parsed the initialisation segment can actually before as it's not added to the SourceBufferPrivate::operationQueue but instead is run immediately.

If it happens that the initialisation segment hasn't been parsed yet, we end up disabling the track instead.

Comment 1 Radar WebKit Bug Importer 2023-11-14 00:39:03 PST

<rdar://problem/118380017>

Comment 2 Jean-Yves Avenard [:jya] 2023-11-14 00:49:26 PST

Pull request: https://github.com/WebKit/WebKit/pull/20469

Comment 3 Jean-Yves Avenard [:jya] 2023-11-14 03:15:33 PST

Pull request: https://github.com/WebKit/WebKit/pull/19765

Comment 4 EWS 2023-11-14 03:52:15 PST

Committed 270703@main (49ba5f074748): <https://commits.webkit.org/270703@main>

Reviewed commits have been landed. Closing PR #20469 and removing active labels.