[Bug 705976] New: per-pipeline element factory modifier ranks

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=705976
  GStreamer | gstreamer (core) | git

           Summary: per-pipeline element factory modifier ranks
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Imagine a library that internally uses GStreamer's playbin to provide certain
functionality, like libwebkitgtk perhaps. Imagine that library needs to make
playbin pick a custom http source. It will have to register a custom source
that has a higher rank than e.g. souphttpsrc.

Now imagine the application also wants to do something with playbin. Now the
application playbin will inadvertently also use the webkit http source, which
may or may not work.

One could solve this by either providing modifier ranks on a per-pipeline
basis, or adding API to playbin/uridecodebin etc. that lets users override the
source selection.

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