[Webkit-unassigned] [Bug 256985] New: [ManagedMSE] bufferedchange event should pass the list of changes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=256985

            Bug ID: 256985
           Summary: [ManagedMSE] bufferedchange event should pass the list
                    of changes
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jean-yves.avenard at apple.com

The expensive part of handling the buffered change event (and updateend) is determining what if anything has changed after iterating through SourceBuffer.buffered TimeRanges.

Just knowing at a glance if the change included appends and/or removal would be a huge time savings as we could skip all the work looking for removal if there was none, and we could avoid duplicating work done on updateend.

The internal code knows exactly what was added and removed ; we should pass this information to the bufferedchange event as a dictionary of TimeRanges added and removed.

This would greatly simplify the code of web players.

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