[Webkit-unassigned] [Bug 211182] New: [GStreamer] Video loops when ran in rr record --chaos

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=211182

            Bug ID: 211182
           Summary: [GStreamer] Video loops when ran in rr record --chaos
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aboya at igalia.com
                CC: bugs-noreply at webkitgtk.org

While trying to investigate a different bug, I ran the browser with
`rr record --chaos`, which makes it run very slowly and shuffles
thread scheduling to try to make existing race conditions more likely
to show up, also inevitably making the software run very slow.

Doing so I found something strange: the video kept looping even though
it didn't have the `loop` attribute set.

After some debugging I found that MediaPlayer decides if the video has
ended in part by checking `currentMediaTime()` is greater or equal to
the video duration, which was not guaranteed to be the case in
MediaPlayerPrivateGStreamer.

As a consequence of this patch, one new LayoutTest has passed.

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