[Bug 796795] New: vaapi: the dumped file of some cases vc1 decoding have garbage

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796795

            Bug ID: 796795
           Summary: vaapi: the dumped file of some cases vc1 decoding have
                    garbage
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer-vaapi
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: zhanjunx.wang at intel.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: bsreerenj at gmail.com, vjaquez at igalia.com
     GNOME version: ---

Test Env:
============================================
Platform:               APL/SKL
Arch:                  x86_64
Kernel:            4.16.0
libva            commit b3be72a5a110880f70626d7c3bed953cdde124b2
media_driver        commit 4a85bb18ecc9a18b7cf592d405c8c2fa1c7aad06
gstreamer               master branch 9722e896446ed052623d795d8511140fbca7f023
gst-vaapi         master branch f5eb4faa5914f3745820e557ac2401a7d738be66

Reproduce Steps:
============================================
take one case for example
1. build enc as above lists
2. gst-launch-1.0 -f -q filesrc location=/media//yami_vc1/SA00040.vc1 '!'
'video/x-wmv,profile=(string)advanced,' width=176, height=144, framerate=14/1
'!' vaapivc1dec '!' videoconvert '!' video/x-raw,format=I420 '!' checksumsink2
frame-checksum=FALSE file-checksum=FALSE plane-checksum=FALSE dump-output=TRUE
dump-location=./SA00040.vc1.I420
3. using tool 7yuv to observe the dumped file, find that it has garbage

Failed cases:
decode_vc1/SA00040.vc1  176 144    15 35.2916583223343300 0.6159933358345406
0.7184113826539638      FAIL
decode_vc1/SA00046.vc1  220 180    30 48.5643548049767100 0.7647935159336376
0.8515261269619044      FAIL
decode_vc1/SA00048.vc1  220 180    30 98.8187976875692400 0.9964911624607404
0.9982124204214127      FAIL
decode_vc1/SA00052.vc1  320 240    30 44.7684477639389400 0.7084239772520413
0.7921287013358408      FAIL
decode_vc1/SA00053.vc1  352 288    25 45.9638709518822200 0.9185088753952656
0.8154818616031322      FAIL
decode_vc1/SA00056.vc1  352 288    25 27.0417845629896100 0.7910402060458941
0.44953573959130266      FAIL
decode_vc1/SA00066.vc1  352 288    25 46.9646274637252200 0.859905979288885
0.7343342357115457      FAIL
decode_vc1/SA00067.vc1  320 240    30 47.11327387616308600 0.7534504618839553
0.8250415437947485      FAIL
decode_vc1/SA00068.vc1  320 240    30 66.679426220253600 0.9190993875597951
0.9227655540761315      FAIL
decode_vc1/SA00070.vc1  320 240    30 66.679426220253600 0.9190993875597951
0.9227655540761315      FAIL
decode_vc1/SA00074.vc1  320 240    30 66.679426220253600 0.9190993875597951
0.9227655540761315      FAIL
decode_vc1/SA10086.vc1  720 576    25 30.39797710950893400 0.798322344350649
0.7030533813515331      FAIL

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