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myrao / libyuv

Automatically exported from code.google.com/p/libyuv
BSD 3-Clause "New" or "Revised" License
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Rotate by 0 is slow on Arm #272

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
On an A15 rotation by 0 is 20% slower than chromium media:
This is just a memcpy, so investigate why the difference and optimize it.

duration | sigma |  fps   | fps sigma |
0.493    | 1.357 | 30.127 | 10.569    | libyuv 0 degrees rotation             
0.409    | 0.579 | 30.07  |  3.166    | media 0 degress rotation 

This is the media source
https://code.google.com/p/chromium/codesearch#chromium/src/media/base/video_util
.cc&sq=package:chromium&type=cs&l=207

Original issue reported on code.google.com by fbarch...@chromium.org on 26 Sep 2013 at 5:01

GoogleCodeExporter commented 8 years ago 
No reproducible and lack of demand.  Dropping for now.

Original comment by fbarch...@google.com on 9 Dec 2013 at 10:21