commit 3a88de8f825ca37fbb934258a9be7ba71ba385e5
author Michael Bebenita <mbebenita@mozilla.com> Thu Feb 23 18:49:44 2017 -0800
committer Michael Bebenita <mbebenita@mozilla.com> Tue Feb 28 19:39:01 2017 +0000
tree 4772fa05ce8759fdb9ef2944011448e0d4ed127c
parent 47c72189425a6baea94943b4089aaaae14af4a4c

Add SIMD code for PVQ search

This reduces the runtime profile of pvq_search_rdo_double from 37%
to 15% and improves overall encoding speed when PVQ is enabled by ~40%.
The SIMD code is not bit accurate with the C version and introduces a
slight PSNR regression on AWCY:

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000
0.0607 |  0.1044 |     N/A |   0.0126 |  N/A | -0.0309 |        N/A

Change-Id: Ie22cebc62df2e72618305f2268668d79167860c6