Bug 57394 - [SNB IVB]MPEG2 gi9_bit_stream U and V samples poor decoding
Summary: [SNB IVB]MPEG2 gi9_bit_stream U and V samples poor decoding
Status: RESOLVED WONTFIX
Alias: None
Product: libva
Classification: Unclassified
Component: intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: haihao
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-11-22 05:26 UTC by Ouping Zhang
Modified: 2015-11-18 08:36 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:


Attachments
ssim value (6.38 KB, text/plain)
2012-11-22 05:30 UTC, Ouping Zhang
Details

Description Ouping Zhang 2012-11-22 05:26:07 UTC
System Environment:
--------------------------
Libva: [staging]9f4dedc4de014cc665c32dfbac1c017f9396b563
Intel-driver: [staging]63db874e9c924f086bcd3518cc0f3d8c6df9ecec
kernel: [drm-intel-nightly]9423fabffc1c5298aec5100b34eec90fb8c70e2a

Bug reproduced steps: 
--------------------------
1. /home/MPEG2_conformance/simple_player_mpeg2 BR00500K.525_HALF.MPG -f yuv420 -vfwf ref.yuv
2. LD_PRELOAD=/home/MPEG2_conformance/i965_drv_video_hook_op.so mplayer -nosound -fps 1000 -vo vaapi -va vaapi BR00500K.525_HALF.MPG
3. /home/AVC_conformance/ssim_op 352 240 118 0 0 dump.yuv ref.yuv 2>2.ssim.2 >2.ssim.1

from 19th frame to 29th frame, the U_ssim and Y_ssim value is lower than 0.9999, but Y_ssim value is higher than 0.9999.
Comment 1 Ouping Zhang 2012-11-22 05:30:14 UTC
Created attachment 70407 [details]
ssim value
Comment 2 Du Yan 2012-12-12 07:16:16 UTC
Platform:SGB IVB
Libva: staging
commit 8865fd148a4444b26c35197b3176f87fb2e85393
Intel-driver: staging
commit c0ef9d99df37ae45589fecb898727be495e50304


att_mismatch_att.bits decoding failed 

Y SSIM extreme 0.970826
Y SSIM average0.994381
U SSIM extreme 1.000000
U SSIM average 1.000000
V SSIM extreme 1.000000
V SSIM average 1.000000


Issue can be reproduced with following files:

gi9_bit_stream
gi_from_tape_gi_stream
ibm-bw.BITS
nokia6_dual_60.bit
nokia7_dual.bit
ntr_skipped_v3.bits
tcela-14-bff-dp.bits
tcela-7-slices.bits
Comment 3 Du Yan 2012-12-12 07:19:39 UTC
gi9_bit_stream

Y SSIM extreme 0.999733	
U SSIM average 0.999804	
V SSIM extreme 0.998537	
Y SSIM average 0.99886	
U SSIM extreme 0.99854	
V SSIM average 0.998775
Comment 4 haihao 2015-11-18 08:36:25 UTC
Issue was reported against staging branch. we won't fix issues on staging any more.


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