Bug 96434 - VA_FILTER_SCALING_HQ downscaling from 4096x2160 to 176x144 only has a part of the source image
Summary: VA_FILTER_SCALING_HQ downscaling from 4096x2160 to 176x144 only has a part of...
Status: NEEDINFO
Alias: None
Product: libva
Classification: Unclassified
Component: intel (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: ykzhao
QA Contact: Sean V Kelley
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-06-08 05:19 UTC by joojler
Modified: 2016-12-15 04:43 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
YUV data before and after scaling (4.06 MB, application/x-rar)
2016-06-08 05:19 UTC, joojler 		Details
attachment-2938-0.html (1.72 KB, text/html)
2016-12-14 01:31 UTC, joojler 		Details
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Description joojler 2016-06-08 05:19:33 UTC 
Created attachment 124398 [details]
YUV data before and after scaling

libva: 0.39
intel-driver: 1.6.2

VA_FILTER_SCALING_HQ NV12 downscaling from 4096x2160 to 176x144 only has a part of the source image. Looks like AVS scaling has some limitation for larger ratio.

Reproduce on both Braswell N3150 and Skylake Core i5-6600 with libyami VPP test application. Please refer to the attached YUV file before and after scaling to get exact phenomenon.

Steps:
$ git config --global http.sslverify false
$ git clone https://github.com/01org/libyami
$ ./autogen.sh --prefix=/usr  –enable-avformat=yes --enable-tests=yes --enable-debu=yes --enable-dmabuf=yes
$ cd tests
$ ./yamivpp 4096x2160_NV12.nv12 output_176x144.nv12
Comment 1 joojler 2016-12-14 01:31:52 UTC 
Created attachment 128457 [details]
attachment-2938-0.html

Thanks for your mail. I'm in business travel from ww51.1~ww51.4. Email response will be slow, please call me for urgent issues. 18500233196
Comment 2 ykzhao 2016-12-15 04:43:52 UTC 
Hi, Jooler
    Will you please try the latest driver code and see whether it works for you?
The driver adds the new implementation for NV12 scaling.

Thanks

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