mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2026-10-28 18:07:12 +08:00
63b56324de
Replace stack-buffer memcpy _Any wrappers with native AVX-512 k-mask
tail handling across 8 AVX-512 row kernels (unlocking composite
RGBToUVMatrixRow_AVX512BW as well) and remove IS_ALIGNED dispatch
constraints:
- MirrorSplitUVRow_AVX512BW: Masked 16-bit load (vmovdqu16 %{k1%}%{z%}),
dynamic reverse index (vpsubw + vpermw via kMirrorUVPermute_AVX512),
and vpmovwb %{k1%} U/V stores; unlocks unaligned SplitRotateUV180.
- ARGBToUVMatrixRow_AVX512BW: Fix MASK=63 vs 32-pixel loop bug;
zero-load tail dwords per row, duplicate odd final pixel via knotw +
vpshufd, and store masked U/V bytes.
- I422ToARGBRow_AVX512BW & I422ToAR30Row_AVX512BW: Add masked Y/U/V
loads (READYUV422_MASK_AVX512BW) and masked ARGB/AR30 stores.
- CopyRow_AVX512BW: Add 64-byte full vector step + bzhi masked tail.
- BlendPlaneRow_AVX512BW, ARGBShuffleRow_AVX512BW, RGBToARGBRow_AVX512BW
(RAWToARGBRow_AVX512BW / RGB24ToARGBRow_AVX512BW): Masked loads and
stores in both row_gcc.cc inline assembly and row_win.cc intrinsics.
Reduces x86-64 binary .text size by 2,592 bytes with 0 bytes added to
.rodata.
Performance on Intel Sapphire Rapids (1275x1650, 1000 iterations):
Function (Test) | Before | After | Speedup
-------------------------|---------|---------|--------
NV12Rotate180_Opt | 429 ms | 260 ms | 1.65x
RGB24ToI420_Opt | 615 ms | 531 ms | 1.16x
I420ToAR30_Opt | 425 ms | 383 ms | 1.11x
ARGBToI420_Opt | 427 ms | 411 ms | 1.04x
I420ToARGB_Opt | 423 ms | 411 ms | 1.03x
RGB24ToARGB_Opt | 493 ms | 490 ms | 1.01x
ARGBToBGRA_Opt | 544 ms | 542 ms | 1.00x
CopyPlane_Opt | 246 ms | 245 ms | 1.00x
BlendPlane_Opt | 259 ms | 258 ms | 1.00x
RAWToARGB_Opt | 486 ms | 486 ms | 1.00x
R=rrwinterton@gmail.com
Test: LIBYUV_WIDTH=1275 LIBYUV_HEIGHT=1650 LIBYUV_REPEAT=1000 out/Release/libyuv_unittest
Change-Id: Ib5e5ae52076352649108b20f8df2b12d81860fb1
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8563977
Reviewed-by: richard winterton <rrwinterton@gmail.com>
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| build_overrides | ||
| docs | ||
| include | ||
| infra/config | ||
| riscv_script | ||
| source | ||
| tools_libyuv | ||
| unit_test | ||
| util | ||
| .clang-format | ||
| .gitignore | ||
| .gn | ||
| Android.bp | ||
| Android.mk | ||
| AUTHORS | ||
| BUILD.bazel | ||
| BUILD.gn | ||
| CM_linux_packages.cmake | ||
| CMakeLists.txt | ||
| codereview.settings | ||
| DEPS | ||
| DIR_METADATA | ||
| download_vs_toolchain.py | ||
| GEMINI.md | ||
| libyuv.bzl | ||
| libyuv.gni | ||
| libyuv.gyp | ||
| libyuv.gypi | ||
| LICENSE | ||
| linux.mk | ||
| OWNERS | ||
| PATENTS | ||
| PRESUBMIT.py | ||
| public.mk | ||
| pylintrc | ||
| README.chromium | ||
| README.md | ||
| vpython.toml | ||
| vpython.toml.uv.lock | ||
| winarm.mk | ||
| WORKSPACE.bazel | ||
libyuv is an open source project that includes YUV scaling and conversion functionality.
- Scale YUV to prepare content for compression, with point, bilinear or box filter.
- Convert to YUV from webcam formats for compression.
- Convert to RGB formats for rendering/effects.
- Rotate by 90/180/270 degrees to adjust for mobile devices in portrait mode.
- Optimized for SSSE3/AVX2 on x86/x64.
- Optimized for Neon/SVE2/SME on Arm.
- Optimized for MSA on Mips.
- Optimized for RVV on RISC-V.
Development
See Getting started for instructions on how to get started developing.
You can also browse the docs directory for more documentation.