[Bug 797056] New: v4l2vp8dec renders frames in the wrong order with Wayland on a Dragonboard 410c

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797056

            Bug ID: 797056
           Summary: v4l2vp8dec renders frames in the wrong order with
                    Wayland on a Dragonboard 410c
    Classification: Platform
           Product: GStreamer
           Version: 1.14.x
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: bugs at linkmauve.fr
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 373507
  --> https://bugzilla.gnome.org/attachment.cgi?id=373507&action=edit
Animated Inubashiri Momiji

This is on a Dragonboard 410c[1], using Linux 4.14.0 as provided by Linaro[2],
using an up to date ALARM[3].

A short animation reproducing this bug is attached.

It displays a frame from the future about each half a second when using filesrc
! matroskademux ! v4l2vp8dec ! waylandsink.

Even with capture-io-mode=mmap (thus using wl_shm rather than linux_dmabuf for
Wayland buffer upload), this still happens.

[1] https://www.96boards.org/product/dragonboard410c/
[2] https://releases.linaro.org/96boards/dragonboard410c/linaro/debian/18.01/
[3] https://archlinuxarm.org/

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