[Bug 746701] New: glimagesink: cannot set window handle to 0

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=746701

            Bug ID: 746701
           Summary: glimagesink: cannot set window handle to 0
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: xclaesse at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

When I set glimagesink's window-handle to 0, I get that critical:

** (lt-scout-client-gtk:25380): CRITICAL **: gst_gl_window_set_window_handle:
assertion 'handle != 0' failed

But gst_video_overlay_set_window_handle()'s doc says this:
"Passing 0 as the handle will tell the overlay to stop using that window and
create an internal one."

In my case I'm on android, since it cannot create a new window there, I guess
the sink has 2 options: drop buffers or block the streaming thread (equivalent
of PAUSED, right?) until it get a new window handle. On android when switching
app the SurfaceView is destroyed so in that case it sets the window-handle to 0
and I think it makes sense to pause the stream.

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