[Bug 634407] decodebin2 should expose pads in a deterministic order

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=634407
  GStreamer | gst-plugins-base | unspecified

--- Comment #32 from Tim-Philipp Müller <t.i.m at zen.co.uk> 2012-07-17 13:28:42 UTC ---
Yes, sorry, that should've been bug #677619.

It's very similar to your approach from comment #21, just a bit more concise
(IMHO, anyway) - I don't think we need to mention the pads when there's only
one source pad, for example. (The number in the example was meant to be a hash
of the filesrc URI btw)

To go back to my list in comment #25, this scheme would accommodate

 1) allow demuxer to signal an order, e.g. via:
      .../foodemux/001/audio_02
      .../foodemux/002/audio_00

 2) *stable unique identifiers* - taken care of
      via topology and URI hashes (if desired)

 3) a way for a demuxer to signal upper
      layers which stream is the *default*:
      Could let the demuxer do that via (1)
      as above - just put default first, or add
      :default suffix or so to ID, or add a
      boolean tag to the stream's taglist.


(I haven't read back the entire comment thread, so apologies if this doesn't
address some other comment).

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