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fuchsia / third_party / libyuv / c613c3f1024d6d59b30f3816fc717a4f074b532e
commitc613c3f1024d6d59b30f3816fc717a4f074b532e[log] [tgz]
authorGeorge Steed <george.steed@arm.com>Thu Apr 25 14:51:56 2024 +0100
committerFrank Barchard <fbarchard@chromium.org>Sat Jul 06 22:40:15 2024 +0000
treeaf476b79f91a60c25a8dbd2bd4de136c536a90b9
parentd1ec694ad38f9c5f1cc07e8db7b4157a44a14ae8 [diff]
[AArch64] Add SVE2 implementations for RAWTo{ARGB,RGBA}Row

We can construct particular predicates to load only up to 3/4 of a full
vector, allowing us to use TBL to shuffle elements into the correct
place rather than needing to rely on more expensive LD3 or ST4
instructions.

Reduction in runtimes observed compared to the existing Neon
implementation:

            | RAWToARGBRow | RAWToRGBARow
Cortex-A510 |       -32.4% |       -31.9%
Cortex-A720 |       -15.7% |       -15.6%
  Cortex-X2 |       -24.6% |       -24.4%

Bug: libyuv:973
Change-Id: I271c625d97bab3b0e08ac1e9d7fcf7d18f3d6894
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5631542
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Justin Green <greenjustin@google.com>
3 files changed
tree: af476b79f91a60c25a8dbd2bd4de136c536a90b9
  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.