[gstreamer-bugs] [Bug 621723] v4l2src crashes on PLAYING->READY->PLAYING

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=621723
  GStreamer | gst-plugins-good | 0.10.25

--- Comment #2 from Havoc Pennington <hp at pobox.com> 2010-06-16 15:25:29 UTC ---
Created an attachment (id=163838)
 View: https://bugzilla.gnome.org/attachment.cgi?id=163838
 Review: https://bugzilla.gnome.org/review?bug=621723&attachment=163838

v4l2src: do not try to change device format if it's already correct

This allows set_caps to succeed if caps change in a way that
would not modify the format we're getting from the hardware.
Otherwise if not in NULL state, setting caps would fail
with EBUSY.

With this change, in some cases it's OK to go PLAYING->READY->PLAYING
rather than PLAYING->NULL->PLAYING to avoid a time-consuming close
and reopen of the device.

Fixes #621723

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