Frank Barchard e58eeea369 [libyuv] Add SwapUVRow_AVX2 and NV12ToNV21
Add SwapUVRow_AVX2 implementation in row_win.cc for MSVC and enable
HAS_SWAPUVROW_AVX2 under USE_ROW_WIN.
Share kShuffleUVToVU shuffle table between SSSE3 and AVX2 in row_gcc.cc.
Make NV12ToNV21 the primary implementation and alias NV21ToNV12 to it.
Add NV12ToNV21 test in convert_test.cc and benchmark dispatch for
SSSE3 and AVX2 in planar_test.cc.

CPU                                   Before     After   Speedup
----------------------------------------------------------------
Intel Granite Rapids                  282 ms    125 ms     2.26x
Intel Emerald Rapids                  264 ms    108 ms     2.44x
Intel Sapphire Rapids                 276 ms    122 ms     2.26x
Intel Ice Lake                        310 ms    122 ms     2.54x
Intel Skylake-X                       573 ms    157 ms     3.65x
Intel Haswell                         620 ms    162 ms     3.83x
AMD Zen 4 (Genoa)                     266 ms     52 ms     5.12x
AMD Zen 6 (Venice)                    229 ms     43 ms     5.33x
ARM Neoverse-N1                       140 ms     71 ms     1.97x
NVIDIA Grace (Neoverse-V2)             62 ms     69 ms     0.90x

R=wtc@google.com

Test: libyuv_unittest --gtest_filter=*SwapUV*:*NV12ToNV21*:*NV21ToNV12*
Bug: 406251841
Change-Id: I9bed5522aedadea13cdf69c27e3cbe633e31dd5b
TAG=agy
CONV=bb50ac62-0c55-4969-8fff-c71ab3d9a79f
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8356968
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>
2026-09-04 12:23:24 -07:00
..
libyuv [libyuv] Add SwapUVRow_AVX2 and NV12ToNV21 2026-09-04 12:23:24 -07:00
libyuv.h libyuv.h: Add scale_rgb.h and remove scale_row.h 2026-08-26 19:06:22 -07:00