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Frank Barchard 65e7c9d570 MM21ToYUY2 and ABGRToJ420 conversion 
MM21 to YUY2 use zip1 for performance

Cortex A510
Was MM21ToYUY2 (612 ms)
Now MM21ToYUY2 (573 ms)

Prefetches help Cortex A53
Was MM21ToYUY2 (4998 ms)
Now MM21ToYUY2 (1900 ms)

Pixel 4 Cortex A76
Was MM21ToYUY2 (215 ms)
Now MM21ToYUY2 (173 ms)

ABGRToJ420
- NEON, SSSE3 and AVX2 row functions
- J400, J420 and J422 formats.
- Added AVX2 for UV on ARGBToJ420.  Was SSSE3

Same code/performance as ARGBToJ420 but with constants re-ordered.
Pixel 4
ABGRToJ420_Opt (623 ms)
ABGRToJ422_Opt (702 ms)
ABGRToJ400_Opt (238 ms)

Skylake Xeon
With LIBYUV_BIT_EXACT which uses C for UV
ABGRToJ420_Opt (988 ms)
ABGRToJ422_Opt (1872 ms)
ABGRToJ400_Opt (186 ms)
Skylake Xeon using AVX2
ABGRToJ420_Opt (251 ms)
ABGRToJ422_Opt (245 ms)
ABGRToJ400_Opt (184 ms)
Skylake Xeon using SSSE3
ABGRToJ420_Opt (328 ms)
ABGRToJ422_Opt (362 ms)
ABGRToJ400_Opt (185 ms)

Bug: b/238137982
Change-Id: I559c3fe3fb80fa2ce5be3d8218736f9cbc627666
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3832111
Reviewed-by: Justin Green <greenjustin@google.com>
Reviewed-by: Wan-Teh Chang <wtc@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
2022-08-16 22:07:38 +00:00
build_overrides Roll chromium_revision 64c8c30faa..eaac4f14d9 (824854:902913) 2021-07-19 17:22:35 +00:00
docs RAWToJNV21 function with 2 step conversion 2022-03-01 19:33:49 +00:00
include MM21ToYUY2 and ABGRToJ420 conversion 2022-08-16 22:07:38 +00:00
infra/config Copy infra/config branch in infra/config folder of the main branch. 2022-03-23 13:15:03 +00:00
source MM21ToYUY2 and ABGRToJ420 conversion 2022-08-16 22:07:38 +00:00
tools_libyuv Update PRESUBMIT, cleanup_links and autoroller to py3 2022-02-24 13:34:14 +00:00
unit_test MM21ToYUY2 and ABGRToJ420 conversion 2022-08-16 22:07:38 +00:00
util Remove MMI support 2022-01-26 08:41:33 +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 64c8c30faa..eaac4f14d9 (824854:902913) 2021-07-19 17:22:35 +00:00
.vpython remove swarming_client 2021-09-09 07:11:45 +00:00
.vpython3 Add .vpython3 to libyuv. 2022-07-15 18:43:49 +00:00
Android.bp Android.bp: Remove reference to LICENSE_THIRD_PARTY 2022-08-02 22:13:44 +00:00
Android.mk RGBScale function using 3 steps: RGB24ToARGB, ARGBScale, ARGBToRGB24 2022-03-19 01:44:06 +00:00
AUTHORS Fix compile errors for ARM targets when libyuv_use_neon = false 2022-05-13 10:12:38 +00:00
BUILD.gn Add I210ToI420 2022-06-09 08:07:50 +00:00
cleanup_links.py Update PRESUBMIT, cleanup_links and autoroller to py3 2022-02-24 13:34:14 +00:00
CM_linux_packages.cmake Reduce cmake verbosity and update min version 2022-08-03 06:59:54 +00:00
CMakeLists.txt Define _CRT_SECURE_NO_WARNINGS if MSVC CRT is used 2022-08-03 21:18:02 +00:00
codereview.settings [infra] remove no longer supported git cl upload setting. 2021-04-28 12:47:52 +00:00
DEPS Switch from python to python3. 2022-07-14 17:45:41 +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 libyuv:loongson optimize compare/row/scale/rotate files with mmi. 2018-07-20 22:53:04 +00:00
libyuv.gyp Add libyuv.gyp build files 2022-03-21 23:48:16 +00:00
libyuv.gypi Add libyuv.gyp build files 2022-03-21 23:48:16 +00:00
LICENSE Update Copyright notice to follow new chromium conventions. 2012-08-08 19:04:24 +00:00
linux.mk RGBScale function using 3 steps: RGB24ToARGB, ARGBScale, ARGBToRGB24 2022-03-19 01:44:06 +00:00
OWNERS Add wtc as owner 2022-05-25 12:46:00 +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 MM21ToYUY2 and ABGRToJ420 conversion 2022-08-16 22:07:38 +00:00
README.md README: fix doc links 2018-08-13 18:28:55 +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.

Development

See Getting started for instructions on how to get started developing.

You can also browse the docs directory for more documentation.