[webkit-changes] [WebKit/WebKit] dadcac: [GStreamer] Ignore notify::caps with NULL caps

[Alicia Boya García]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: dadcac2683e98a375c206185919ad7f70ab7123e
      https://github.com/WebKit/WebKit/commit/dadcac2683e98a375c206185919ad7f70ab7123e
  Author: Alicia Boya Garcia <aboya at igalia.com>
  Date:   2023-10-13 (Fri, 13 Oct 2023)

  Changed paths:
    M Source/WebCore/platform/graphics/gstreamer/TrackPrivateBaseGStreamer.cpp

  Log Message:
  -----------
  [GStreamer] Ignore notify::caps with NULL caps
https://bugs.webkit.org/show_bug.cgi?id=262949

Reviewed by Philippe Normand.

notify::caps is triggered not only when caps are set, but also when
they're unset, as it's the case during pipeline teardown.

This was happening as the state pipeline was set to NULL from the main
thread, making the non-main-thread assertion
AbortableTaskQueue::enqueueTask() fail.

* Source/WebCore/platform/graphics/gstreamer/TrackPrivateBaseGStreamer.cpp:
(WebCore::TrackPrivateBaseGStreamer::installUpdateConfigurationHandlers):

Canonical link: https://commits.webkit.org/269307@main