[Bug 741987] New: videoscale performance regression

[GStreamer (bugzilla.gnome.org)]

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

           Summary: videoscale performance regression
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: lists at svrinformatica.it
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


on x86_64

git master:

gst-launch-1.0 videotestsrc num-buffers=2000 !
video/x-raw,width=1920,height=1080 ! 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 0:00:13.956702692
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...


1.4.5:

gst-launch-1.0 videotestsrc num-buffers=2000 !
video/x-raw,width=1920,height=1080 ! 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 0:00:10.353925742
Impostazione della pipeline a PAUSED ...
Impostazione della pipeline a READY ...
Impostazione della pipeline a NULL ...
Esecuzione di free sulla pipeline...

so the recent refactoring in videoscale seems to have introduced performance
regressions

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