Bug 76383

Summary:	[ivb/hsw/byt/bdw] Gnome impacts the decoding result of some VC1 clips
Product:	libva	Reporter:	zhenxiang.li <zhenxiang.li>
Component:	intel	Assignee:	haihao <haihao.xiang>
Status:	VERIFIED NOTOURBUG	QA Contact:	Sean V Kelley <seanvk>
Severity:	normal
Priority:	medium	CC:	shuang.he
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description zhenxiang.li 2014-03-20 05:48:28 UTC

Summary:
--------------------
These vc1 video are:
SA20018.vc1
SA30026.vc1
SA30027.vc1
SA30028.vc1
SA30029.vc1
SA40011.vc1
SMH0008.rcv

All the above clips decoding more 1 frame comparing with reference tool(using decoder). The result may like this:

$F ${Y_MIN_SSIM} ${Y_AVERAGE_SSIM} ${U_MIN_SSIM} ${U_AVERAGE_SSIM} ${V_MIN_SSIM} ${V_AVERAGE_SSIM} ${REF_FRAME_COUNT} ${DUMP_FRAME_COUNT} ${LOST_FRAMES_COUNT}
SA30027.vc1 0.622797 0.869739 0.943490 0.986726 0.935666 0.981597 25 26 -1

Decoding also is impacted by platform, for example, file SA40011.vc1 decoding pass on ivb both with gnome and under x-window, but fail on hsw when decoding with gnome and pass without gnome-session.
Platform byt & bdw will be verified when the machine are available.

Testing environment:
--------------------
Libva:          
(master)ffdcb500fe50f927a55e35ab19434157fc90f39b
Libva_intel_driver:             
(master)f393de526b37a964572b1e5ea326bef826890d2c
Mplayer:                
(hwaccel-vaapi)1923fa10ed77bbf8408f2ce312d85a97dab1f0f3


command line: 
--------------------
path="/root/media_tools/decoder"
LD_PRELOAD=$path"/i965_drv_video_hook.so" mplayer -nosound -fps 30 -vo vaapi -va vaapi ${F}

Comment 1 zhenxiang.li 2014-03-20 08:21:09 UTC

Issue also reproduced on byt and bdw

Comment 2 haihao 2014-03-24 04:36:23 UTC

Seems your tool doesn't get the right frame number when gnome-session is launched. 

E.g. for SA40011.vc1 on HSW
the frame number is switched between 30 and 31.

Comment 3 zhenxiang.li 2014-03-28 01:12:29 UTC

Modified the testing script and no reproduce again

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