[Bug 682171] videoscale: assertion failed: (envelope ((x - (xi - 1)) * ex) == 0)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=682171
  GStreamer | gst-plugins-base | git

David Jordan <dmj726> changed:

           What    |Removed                     |Added
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                 CC|                            |dmj726 at sbcglobal.net

--- Comment #1 from David Jordan <dmj726 at sbcglobal.net> 2012-08-18 23:14:12 UTC ---
I've checked this out and the number of taps used by the lanczos filter
explodes to infinity as the sharpness value goes to zero.  At sharpness == 0.0
this causes x and xi to reach maximum negative values and results in xi
overflowing, which causes the assertion to fail.
At least for the lanczos filter, sharpness should not be allowed to actually
reach zero.  I'm not sure the best solution to mitigate this is, however.

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