[Bug 727236] ximagesrc fails to create an image after some time and recording stops

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727236
  GStreamer | gst-plugins-good | 1.2.3

--- Comment #10 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2014-04-04 11:47:06 UTC ---
Created an attachment (id=273583)
 View: https://bugzilla.gnome.org/attachment.cgi?id=273583
 Review: https://bugzilla.gnome.org/review?bug=727236&attachment=273583

avoid allocating unneeded alignment slack

This does not fix the issue per se, but may ease shared memory pressure a bit.
Since large shm allocations are typically page multiples, it may get you an
extra image and move the issue further down the carpet (and maybe even down the
hole under the carpet, if you get to the max concurrent image count, which may
be due to downstream's max buffer lookahead).

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