[Bug 720435] rtpbasepayload: Prefer downstream SSRC after collision if possible

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=720435
  GStreamer | gst-plugins-good | unspecified

Wim Taymans <wim.taymans> changed:

           What    |Removed                     |Added
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                 CC|                            |wim.taymans at gmail.com

--- Comment #3 from Wim Taymans <wim.taymans at gmail.com> 2013-12-16 08:00:51 UTC ---
(In reply to comment #1)
> Created an attachment (id=264173)
 View: https://bugzilla.gnome.org/attachment.cgi?id=264173
 Review: https://bugzilla.gnome.org/review?bug=720435&attachment=264173

> rtpbasepayload: Prefer downstream SSRC after collision if possible
> 
> The collision event handling introduced in commit 71788c14 ignored
> downstream preference, still prefer it to make it possible for the application
> to select the SSRC itself.

I would like to deprecated the negotiation of SSRC via caps because it doesn't
work when a session can have multiple SSRCs as senders. I would simply let the
elements that produce the RTP packets choose and SSRC and then have the
RTPCollision event make it choose a new SSRC. If anything, the session could
suggest a free SSRC as part of the event.

So, selection of the SSRC is then done by setting the SSRC properties on the
relevant elements.

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