[Bug 778611] New: OpenGL Major memory leak when shutting down pipeline.

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=778611

            Bug ID: 778611
           Summary: OpenGL Major memory leak when shutting down pipeline.
    Classification: Platform
           Product: GStreamer
           Version: 1.11.1
                OS: Linux
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: tom at duotecno.be
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 345737
  --> https://bugzilla.gnome.org/attachment.cgi?id=345737&action=edit
Shows memory usage before opening a pipeline.

I have a working application.
In my application I always shutdown the pipeline and make a new pipeline for
every new video source.

For performance issues I reworked the original pipeline:

    gst-launch-1.0  
        souphttpsrc location=<URL> is-live=true ! \
        image/jpeg,framerate=25/1 ! 
        jpegparse ! 
        omxmjpegdec ! 
        videoconvert ! 
        videoscale add-borders=true ! 
        video/x-raw,framerate=25/1,format=RGBx,width=800,height=480 ! 
        autovideosink

to:

    gst-launch-1.0 souphttpsrc location=<URL> is-live=true ! \
        image/jpeg,framerate=25/1 ! \
        jpegparse ! \
        omxmjpegdec ! \
        glupload ! \
        glcolorconvert ! \
        glcolorscale ! \
        "video/x-raw(memory:GLMemory),framerate=25/1,width=800,height=480" ! \
        videorate \
        glimagesink


CPU is decreased a lot but there is a major memory leak.
After 10-20 times shutting down the pipeline and creating a new pipeline the
application crashed because of memory allocation problems.
I have replaced omxmjpegdec with jpegdec decoder and the problem is the same.
With the original pipeline the application has been running for days...

logging1.txt: Shows memory usage before opening a pipeline.
logging2.txt: Shows memory usage after several shutdown and creating new
pipelines. 
logging3.txt: Shows error message that memory cannot be allocated anymore.

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