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android / platform / external / libyuv / 9a975213
commit9a9752134e251b8ac5980cf847ba141e408da138[log] [tgz]
authorGeorge Steed <george.steed@arm.com>Fri Nov 15 15:32:56 2024 +0000
committerFrank Barchard <fbarchard@chromium.org>Mon Nov 25 21:10:26 2024 +0000
treef0005c85ff971bcefebf388917e84c6815b8dc78
parent11c57f4f12f92bf67bd893b6ad59ef7b71b11fba [diff]
[AArch64] Add Neon implementation of ScaleRowDown2Linear_16

Reduction in runtime observed relative to the auto-vectorized C
implementation compiled with LLVM 19:

  Cortex-A55: -13.7%
 Cortex-A510: -49.0%
 Cortex-A520: -32.0%
  Cortex-A76: -34.3%
 Cortex-A710: -56.7%
 Cortex-A715: -45.4%
 Cortex-A720: -44.7%
   Cortex-X1: -70.6%
   Cortex-X2: -67.9%
   Cortex-X3: -72.2%
   Cortex-X4: -40.0%
 Cortex-X925: -24.1%

Bug: b/42280942
Change-Id: I977899a2239e752400c9901f4d8482a76841269a
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/6040154
Reviewed-by: Justin Green <greenjustin@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
3 files changed
tree: f0005c85ff971bcefebf388917e84c6815b8dc78
  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/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.