[Bug 723096] New: Make it possible to register multiple handlers to decodebin's autoplug-select signal

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=723096
  GStreamer | gst-plugins-base | git

           Summary: Make it possible to register multiple handlers to
                    decodebin's autoplug-select signal
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Mac OS
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: alessandro.d at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=267303)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=267303)
proposed change

In Firefox I want to apply a whitelist to the streams that are decoded by
playbin. A simple approach is to get the uridecodebin instance inside playbin
and connect to its autoplug-select signal. Unfortunately this doesn't currently
work because of the way autoplug-select is accumulated.

This bug has some context:
https://bugzilla.mozilla.org/show_bug.cgi?id=959007#c4

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