[Bug 681152] New: [0.11] gst_buffer_make_writable also tries to make memory writable

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=681152
  GStreamer | gstreamer (core) | git

           Summary: [0.11] gst_buffer_make_writable also tries to make
                    memory writable
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: rawoul at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


In my pipeline, some element tries to call gst_buffer_make_writable on a
_readonly_ framebuffer allocated by an upstream hardware element, just to
change a buffer flag.

Unfortunately the gst_buffer_make_writable also makes its memory writable, and
in this case triggers a full copy of the frame buffer. This is obviously
overkill just to change a buffer flag.

Is there any way this could be avoided, besides not marking the memory read
only ?

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