[gstreamer-bugs] [Bug 611194] [segments] gst_segment_set_newsegment_full() should allow negative updates to segment start

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=611194
  GStreamer | gstreamer (core) | git

Wim Taymans <wim.taymans> changed:

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

--- Comment #1 from Wim Taymans <wim.taymans at gmail.com> 2010-03-02 10:58:52 UTC ---
The reason why it's not implemented is because something like this is tricky:

The initial segment goes like this:
   (segment update,rate,start,stop): FALSE, 1.0, 0, 10, 0

Then an update is set (and the rate changed)

   (segment update,rate,start,stop): TRUE, 2.0, 5, 10, 5
  -> accumulated time is now 5

Then the previous update was considered wrong and the start is decreased:

   (segment update,rate,start,stop): TRUE, 2.0, 3, 10, 3
  -> accumulated time (implementing backwards start) is now 1 (instead of 3)

The last segment update doesn't know that the previous increase caused an
accumulated time of 5 using a rate of 1.0. so it decreases with 2*2.0 instead
of the expected 2. Not sure it's a real problem but something to consider.

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