[Bug 741987] videoscale performance regression

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=741987
  GStreamer | gst-plugins-base | git master

--- Comment #10 from Nicola <lists at svrinformatica.it> 2015-01-27 10:54:46 UTC ---
thanks, now with i420 is better, however there are still some performance
regressions with other formats, for example:

git master:

gst-launch-1.0 videotestsrc num-buffers=2000 !
video/x-raw,width=1920,height=1080,format=YUY2 ! videoscale !
video/x-raw,width=320,height=240 ! fakesink sync=false
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Got EOS from element "pipeline0".
Execution ended after 0:00:09.526237997
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...


1.4:

gst-launch-1.0 videotestsrc num-buffers=2000 !
video/x-raw,width=1920,height=1080,format=YUY2 ! videoscale !
video/x-raw,width=320,height=240 ! fakesink sync=false
Impostazione della pipeline a PAUSED ...
La pipeline è in PREROLLING ...
La pipeline è in PREROLLED ...
Impostazione della pipeline a PLAYING ...
New clock: GstSystemClock
Ottenuto EOS dall'elemento «pipeline0».
Execution ended after 0:00:07.107416794
Impostazione della pipeline a PAUSED ...
Impostazione della pipeline a READY ...
Impostazione della pipeline a NULL ...
Esecuzione di free sulla pipeline...

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