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Frank Barchard 149568401f SVE2 row functions needed for multipass image functions 
- MergeUVRow_SVE2: Interleaves U and V
 - SplitUVRow_SVE2: De-interleaves UV
 - InterpolateRow_SVE2: Bilinear row interpolation
 - YUY2ToYRow_SVE2, YUY2ToUVRow_SVE2, UYVYToYRow_SVE2, UYVYToUVRow_SVE2
 - HalfMergeUVRow_SVE2: 2:1 vertical averaging of U and V

OnePlus 15 with Qualcomm Snapdragon 8 Elite Gen 5 Oryon V3

Benchmark (1280x720 1000x)     | SVE2   | NEON   | Result
-------------------------------+--------+--------+------------------
TestInterpolatePlane           | 119 ms | 164 ms | SVE2 is 1.38x win
TestInterpolatePlane_16        | 138 ms | 172 ms | SVE2 is 1.25x win
SplitUVPlane_Opt               |  68 ms |  69 ms | SVE2 is 1.01x win
MergeUVPlane_Opt               |  40 ms |  40 ms | Tied
SwapUVPlane_Opt                |  72 ms |  72 ms | Tied
HalfMergeUVPlane_Opt           |  50 ms |  50 ms | Tied
I420ToNV12_Opt                 |  25 ms |  26 ms | SVE2 is faster
I420ToNV21_Opt                 |  26 ms |  26 ms | Tied
YUY2ToNV12_Opt                 |  79 ms |  81 ms | SVE2 is faster
NV21ToNV12_Opt                 |  36 ms |  35 ms | Tied
Android420ToI420ToNV12_Opt     |  53 ms |  53 ms | Tied
Android420ToI420ToNV21_Opt     |  35 ms |  33 ms | NEON is faster
YUY2ToI420_Opt                 |  87 ms |  84 ms | NEON is faster
UYVYToI420_Opt                 |  87 ms |  83 ms | NEON is faster
YUY2ToI422_Opt                 | 101 ms |  97 ms | NEON is faster
UYVYToI422_Opt                 | 101 ms |  97 ms | NEON is faster
UYVYToNV12_Opt                 | 111 ms | 108 ms | NEON is faster
ARGBToNV21_Opt                 | 279 ms | 279 ms | Tied
ABGRToNV21_Opt                 | 279 ms | 280 ms | SVE2 is faster
ARGBToNV12_Opt                 | 285 ms | 280 ms | NEON is faster
ABGRToNV12_Opt                 | 284 ms | 281 ms | NEON is faster

Bug: 42280902
Change-Id: I53f633fe453f2853f7bc9fe17280e938912c4e8f
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8196068
Reviewed-by: Justin Green <greenjustin@google.com>
Commit-Queue: Frank Barchard <fbarchard@google.com>
2026-08-06 12:40:26 -07:00
build_overrides [tracing] Remove enable_base_tracing 2025-05-15 01:22:38 -07:00
docs Mirrow AVX2 functions for Visual C 2026-05-15 15:05:31 -07:00
include SVE2 row functions needed for multipass image functions 2026-08-06 12:40:26 -07:00
infra/config Use default xcode version in libyuv 2025-11-24 07:54:14 -08:00
riscv_script Support RVV v0.12 intrinsics for row_rvv.cc & scale_rvv.cc 2024-06-17 18:01:49 +00:00
source SVE2 row functions needed for multipass image functions 2026-08-06 12:40:26 -07:00
tools_libyuv Remove libyuv dependency on base/ 2025-01-08 09:04:21 -08:00
unit_test Make RGBToY a 1 pass avx512bw 2026-08-03 17:53:19 -07:00
util vdpphps use emit to support old compilers 2026-07-06 15:51:14 -07:00
.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 Set use_siso=true by default in .gn 2025-06-23 23:50:32 -07:00
.vpython3 [libyuv] Bump vpython from 3.8 to 3.11 2025-09-03 12:22:19 -07:00
Android.bp Deprecate MIPS and MSA support. 2025-10-16 12:20:40 -07:00
Android.mk Android.mk: add a check for NDK_ROOT 2026-06-03 17:00:30 -07:00
AUTHORS [DEPS] Remove cleanup_links pre_deps_hooks 2024-04-08 15:47:48 +00:00
BUILD.bazel Add Bazel build support 2026-04-15 18:20:26 -07:00
BUILD.gn [libyuv] Fix toolchain dependency for Windows x64 2026-07-14 08:37:10 -07:00
CM_linux_packages.cmake Use grep extended regex for version 2024-11-13 02:11:17 +00:00
CMakeLists.txt Deprecate MIPS and MSA support. 2025-10-16 12:20:40 -07:00
codereview.settings [infra] remove no longer supported git cl upload setting. 2021-04-28 12:47:52 +00:00
DEPS Roll chromium_revision 30d4d9c779..2fec1883d8 (1554090:1584384) 2026-02-12 23:42:06 -08:00
DIR_METADATA Move metadata in OWNERS files to DIR_METADATA files 2021-02-09 19:34:43 +00:00
download_vs_toolchain.py Update pylintrc to a pep-8 like style 2024-12-18 05:38:56 -08:00
GEMINI.md SVE2 row functions needed for multipass image functions 2026-08-06 12:40:26 -07:00
libyuv.bzl Add Bazel build support 2026-04-15 18:20:26 -07:00
libyuv.gni row_win.cc rewrite into intrinsics 2026-04-15 19:53:16 -07:00
libyuv.gyp Stop setting --dynamic-linker for target_os="android" 2026-05-27 04:34:07 -07:00
libyuv.gypi Add missing files for riscv64 GYP build 2026-06-03 20:11:31 -07:00
LICENSE Update Copyright notice to follow new chromium conventions. 2012-08-08 19:04:24 +00:00
linux.mk Deprecate MIPS and MSA support. 2025-10-16 12:20:40 -07:00
OWNERS row_win.cc rewrite into intrinsics 2026-04-15 19:53:16 -07:00
PATENTS LibYuv: Adding PATENT and LICENSE files 2011-10-25 16:15:49 +00:00
PRESUBMIT.py Update pylintrc to a pep-8 like style 2024-12-18 05:38:56 -08:00
public.mk use unix line endings 2018-06-20 23:19:59 +00:00
pylintrc Update pylintrc to a pep-8 like style 2024-12-18 05:38:56 -08:00
README.chromium Export the ARGBToNV21Matrix() function 2026-08-05 19:19:46 -07:00
README.md Update README.md and environment_variables.md for Arm 2024-09-20 00:29:33 +00:00
winarm.mk NV12 Copy, include scale_uv.h 2020-12-08 18:54:16 +00:00
WORKSPACE.bazel Add Bazel build support 2026-04-15 18:20:26 -07:00

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/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.