libyuv/unit_test
Philipp Hancke aa6cedb39c Add a box filter to ScaleUV
kFilterBox only had 1/2 and 1/4 fast paths. Everything else fell
through to ScaleUVSimple and point sampled, so NV12 chroma was
unfiltered where I420 was not. 13.6 dB against 50.2 dB at 3x.

ScaleUVBox mirrors ScalePlaneBox. Row accumulation reuses ScaleAddRow
and its SIMD variants, since summing is position wise and an
interleaved row is just src_cols * 2 samples. Only the column pass,
which sums U and V at a stride of 2, is new.

Output is now byte identical to the I420 path. Tests compare against
ScalePlane rather than C against SIMD, which is what missed this.

Bug: libyuv:564129034
Change-Id: I26221f5435dbfc845ad2fc13aa347ef56ccf7bc6
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8426668
Reviewed-by: richard winterton <rrwinterton@gmail.com>
Reviewed-by: Frank Barchard <fbarchard@google.com>
2026-10-02 15:37:21 -07:00
..
testdata Deprecate MIPS and MSA support. 2025-10-16 12:20:40 -07:00
basictypes_test.cc [libyuv] Keep LIBYUV_API in basic_types.h and remove legacy types and bool macros 2026-08-28 08:32:19 -07:00
color_test.cc [libyuv] Enable LIBYUV_ENABLE_ROWWIN and MSAN_MEMSET for MSan builds 2026-09-28 10:49:58 -07:00
compare_test.cc Compare AVX512BW and AVX2, intrinsics for Visual C and ROWWIN 2026-10-02 15:30:05 -07:00
convert_argb_test.cc clang format and bump version 2026-09-28 10:42:45 -07:00
convert_test.cc clang format and bump version 2026-09-28 10:42:45 -07:00
cpu_test.cc [libyuv] Disable SME on iOS 2026-09-18 16:21:53 -07:00
cpu_thread_test.cc Unittests use ASSERT instead of EXPECT 2026-05-11 19:10:47 -07:00
math_test.cc [libyuv] Keep LIBYUV_API in basic_types.h and remove legacy types and bool macros 2026-08-28 08:32:19 -07:00
planar_test.cc clang format and bump version 2026-09-28 10:42:45 -07:00
rotate_argb_test.cc Unittests use ASSERT instead of EXPECT 2026-05-11 19:10:47 -07:00
rotate_test.cc BGRAToI420 use BgraConstants for a direct conversion using AVX512BW 2026-06-08 12:21:47 -07:00
scale_argb_test.cc clang format and bump version 2026-09-28 10:42:45 -07:00
scale_plane_test.cc Fix same-width vertical point upsampling 2026-08-24 19:28:50 -07:00
scale_rgb_test.cc Unittests use ASSERT instead of EXPECT 2026-05-11 19:10:47 -07:00
scale_test.cc convert, scale: Add P010/P210/P410 convert paths and NV16/NV24/Px10 scale 2026-09-23 20:43:22 -07:00
scale_uv_test.cc Add a box filter to ScaleUV 2026-10-02 15:37:21 -07:00
unit_test.cc [libyuv] Disable SME on iOS 2026-09-18 16:21:53 -07:00
unit_test.h [libyuv] Enable LIBYUV_ENABLE_ROWWIN and MSAN_MEMSET for MSan builds 2026-09-28 10:49:58 -07:00
video_common_test.cc convert, scale: Add P010/P210/P410 convert paths and NV16/NV24/Px10 scale 2026-09-23 20:43:22 -07:00