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George Steed 772f0fde1c [AArch64] Use full Neon vectors in RGB565To{ARGB,UV,Y}Row_NEON 
The existing code only makes use of half of the vector lanes in the
RGB565TOARGB macro. In the RGB565To{ARGB,Y} kernels we can load more
data to allow using full vectors, adjusting the "any" kernel macros to
match. For the RGB565ToUVRow kernel we already have plenty of data but
currently call the macro twice as much as needed, so refactor the code
to only call it once but operating with full vectors instead.

Reduction in runtimes observed for selected micro-architectures:

            | RGB565ToARGBRow | RGB565ToUVRow | RGB565ToYRow
 Cortex-A53 |          -35.2% |        -28.8% |       -31.1%
 Cortex-A55 |          -32.5% |        -34.4% |       -42.9%
Cortex-A510 |          -21.6% |        -27.7% |       -47.2%
 Cortex-A76 |           -0.9% |        -42.0% |       -21.4%
Cortex-A720 |          -28.6% |        -37.2% |       -26.1%
  Cortex-X1 |           -3.2% |        -42.3% |       -23.4%

Bug: b/42280945
Change-Id: Ib1f68e5b87cc05a1485bbe96cfef87e6ac119fc3
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5790974
Reviewed-by: Justin Green <greenjustin@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
2024-09-16 04:35:47 +00:00
build_overrides Define enable_safe_libcxx in build_overrides/build.gni. 2023-05-03 06:08:40 +00:00
docs Fix build script instructions for Windows 2024-08-21 00:05:21 +00:00
include [AArch64] Add Neon dot-product implementation for ARGBSepiaRow 2024-09-16 04:31:35 +00:00
infra/config infra: Move libyuv ci/try jobs from Ubuntu-18.04 to Ubuntu-22.04 2024-05-21 15:55:24 +00:00
riscv_script Support RVV v0.12 intrinsics for row_rvv.cc & scale_rvv.cc 2024-06-17 18:01:49 +00:00
source [AArch64] Use full Neon vectors in RGB565To{ARGB,UV,Y}Row_NEON 2024-09-16 04:35:47 +00:00
tools_libyuv Do not roll the Fuchsia SDK. 2023-07-03 09:18:00 +00:00
unit_test ScalePlane crash fix for 3/4 scaling 2024-09-13 01:20:39 +00:00
util Fix -Wmissing-prototypes warnings 2024-08-12 19:08:24 +00:00
.clang-format clang-format libyuv 2016-11-07 17:37:23 -08:00
.gitignore DetilePlane and unittest for NEON 2022-01-31 20:05:55 +00:00
.gn Roll chromium_revision 829c6df33d..7d683aeda8 (945687:1050091) 2022-09-22 14:56:57 +00:00
.vpython remove swarming_client 2021-09-09 07:11:45 +00:00
.vpython3 Update vpython3 requests 2023-06-01 19:06:40 +00:00
Android.bp Split scale_test and scale_plane_test to allow building on small devices 2023-12-09 18:39:41 +00:00
Android.mk Split scale_test and scale_plane_test to allow building on small devices 2023-12-09 18:39:41 +00:00
AUTHORS [DEPS] Remove cleanup_links pre_deps_hooks 2024-04-08 15:47:48 +00:00
BUILD.gn Run "gn format" on BUILD.gn and libyuv.gni 2024-08-11 20:32:05 +00:00
CM_linux_packages.cmake Reduce cmake verbosity and update min version 2022-08-03 06:59:54 +00:00
CMakeLists.txt Install yuvconvert with install(TARGETS) 2024-09-05 20:57:59 +00:00
codereview.settings [infra] remove no longer supported git cl upload setting. 2021-04-28 12:47:52 +00:00
DEPS [DEPS] Remove cleanup_links pre_deps_hooks 2024-04-08 15:47:48 +00:00
DIR_METADATA Move metadata in OWNERS files to DIR_METADATA files 2021-02-09 19:34:43 +00:00
download_vs_toolchain.py Update gclient instructions + environment 2022-02-24 15:19:23 +00:00
libyuv.gni Restrict libyuv_use_sme to is_linux 2024-08-11 20:37:04 +00:00
libyuv.gyp Add libyuv.gyp build files 2022-03-21 23:48:16 +00:00
libyuv.gypi Fix missing headers in GN/GYP build files 2024-04-01 09:19:24 +00:00
LICENSE Update Copyright notice to follow new chromium conventions. 2012-08-08 19:04:24 +00:00
linux.mk Split convert_test and convert_argb_test to allow building on small systems that run out of memory compiling unittests. 2023-12-08 13:39:56 +00:00
OWNERS add jansson@google.com to infra owners to cover when Mirko is OOO 2022-10-28 09:46:02 +00:00
PATENTS LibYuv: Adding PATENT and LICENSE files 2011-10-25 16:15:49 +00:00
PRESUBMIT.py Update PRESUBMIT, cleanup_links and autoroller to py3 2022-02-24 13:34:14 +00:00
public.mk use unix line endings 2018-06-20 23:19:59 +00:00
pylintrc Use DEPS for all dependencies + add PRESUBMIT.py 2017-02-03 11:36:53 +00:00
README.chromium ScalePlane crash fix for 3/4 scaling 2024-09-13 01:20:39 +00:00
README.md Add RAWToARGBRow_RVV,RAWToRGBARow_RVV,RAWToRGB24Row_RVV 2023-04-07 18:45:08 +00:00
winarm.mk NV12 Copy, include scale_uv.h 2020-12-08 18:54:16 +00:00

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.