[Bug 712403] New: discoverer: fails to categorize WAV as a container

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=712403
  GStreamer | gst-plugins-base | git

           Summary: discoverer: fails to categorize WAV as a container
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: olivier.crete at ocrete.ca
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Running discover on a wav file doesn't categorize audio/x-wav as a container.
If the wav file contains raw audio, it claims the "codec" is wav, not
audio/x-raw.

This seems to have never worked, it breaks in 0.10, 1.0 and git master.

This is because decodebin2's stream-topology message doesn't declare it as a
container either. And this is because it is not categorized as a demuxer. We
probably need to separate the concept of "is a demuxer and we need to add a
multiqueue afterwards" and "is a demuxer for stream-topology purposes". Then
the topology can mark things that come from a decoder differently than what
comes out of a demuxer or parser type element.

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