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fuchsia / third_party / libyuv / 679e851f653866a49e21f69fe8380bd20123f0ee
commit679e851f653866a49e21f69fe8380bd20123f0ee[log] [tgz]
authorFrank Barchard <fbarchard@google.com>Tue Aug 13 16:57:45 2024 -0700
committerFrank Barchard <fbarchard@google.com>Thu Aug 15 20:13:33 2024 +0000
treebb6ab82796142bc35f29573066742c8b13964581
parentc21dda06dd8d19b6e50168c28c324c1f32e94407 [diff]
Convert16To8Row_AVX512BW using vpmovuswb

- avx2 is pack/perm is mutating order
- cvt method maintains channel order on avx512

Sapphire Rapids

Benchmark of 640x360 on Sapphire Rapids
AVX512BW
[       OK ] LibYUVConvertTest.I010ToNV12_Opt (3547 ms)
[       OK ] LibYUVConvertTest.P010ToNV12_Opt (3186 ms)

AVX2
[       OK ] LibYUVConvertTest.I010ToNV12_Opt (4000 ms)
[       OK ] LibYUVConvertTest.P010ToNV12_Opt (3190 ms)

SSE2
[       OK ] LibYUVConvertTest.I010ToNV12_Opt (5433 ms)
[       OK ] LibYUVConvertTest.P010ToNV12_Opt (4840 ms)

Skylake Xeon
Now vpmovuswb
[       OK ] LibYUVConvertTest.I010ToNV12_Opt (7946 ms)
[       OK ] LibYUVConvertTest.P010ToNV12_Opt (7071 ms)

Was vpackuswb
[       OK ] LibYUVConvertTest.I010ToNV12_Opt (7684 ms)
[       OK ] LibYUVConvertTest.P010ToNV12_Opt (7059 ms)

Switch from vpunpcklwd to vpbroadcastw for scale value parameter
Was
vpunpcklwd  %%xmm2,%%xmm2,%%xmm2
vbroadcastss %%xmm2,%%ymm2

Now
vpbroadcastw %%xmm2,%%ymm2

Bug: 357439226, 357721018
Change-Id: Ifc9c82ab70dba58af6efa0f57f5f7a344014652e
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5787040
Reviewed-by: Wan-Teh Chang <wtc@google.com>
6 files changed
tree: bb6ab82796142bc35f29573066742c8b13964581
  1. build_overrides/
  2. docs/
  3. include/
  4. infra/
  5. riscv_script/
  6. source/
  7. tools_libyuv/
  8. unit_test/
  9. util/
  10. .clang-format
  11. .gitignore
  12. .gn
  13. .vpython
  14. .vpython3
  15. Android.bp
  16. Android.mk
  17. AUTHORS
  18. BUILD.gn
  19. CM_linux_packages.cmake
  20. CMakeLists.txt
  21. codereview.settings
  22. DEPS
  23. DIR_METADATA
  24. download_vs_toolchain.py
  25. libyuv.gni
  26. libyuv.gyp
  27. libyuv.gypi
  28. LICENSE
  29. linux.mk
  30. OWNERS
  31. PATENTS
  32. PRESUBMIT.py
  33. public.mk
  34. pylintrc
  35. README.chromium
  36. README.md
  37. winarm.mk
README.md

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 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.