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Frank Barchard 137e29972e [libyuv] Simplify RVV configuration in BUILD.bazel and libyuv.bzl 
Restructure RISC-V Vector (RVV) configuration to follow the pattern
used by NEON and SVE:
- Move RVV_COPTS immediately after SVE_COPTS.
- Define ENABLE_RVV_COPTS (-march=rv32gcv) and ENABLE_RVV64_COPTS
  (-march=rv64gcv) with SUPPORTS_RVV_COPTS (-DLIBYUV_RVV).
- Revert ALL_COPTS to PLATFORM_COPTS so RVV vector flags are not
  applied to generic sources.
- Add ALL_RVV_COPTS, RVV_DEPS, and libyuv_rvv_impl target.
- Update libyuv.bzl to add libyuv_rvv_srcs and exclude source/*rvv*.cc
  from libyuv_srcs.

R=wtc@google.com

Test: cmake -B out/Release -DUNIT_TEST=ON && cmake --build out/Release
Bug: none
Change-Id: Ia60a8bc1da9db46f0c5295064d7b9d3d5609a38f
TAG=agy
CONV=06856819-10a7-4815-93d3-cdcd32da7495
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/8357976
Reviewed-by: richard winterton <rrwinterton@gmail.com>
2026-09-08 17:50:17 -07:00
build_overrides [tracing] Remove enable_base_tracing 2025-05-15 01:22:38 -07:00
docs Enable RVV support in CMake and Bazel for RISC-V targets 2026-09-04 13:20:27 -07:00
include
infra/config
riscv_script
source [libyuv] Add SwapUVRow_AVX2 and NV12ToNV21 2026-09-04 12:23:24 -07:00
tools_libyuv
unit_test [libyuv] Cast stride to size_t in test buffer allocation and memset 2026-09-08 17:49:34 -07:00
util [libyuv] Keep LIBYUV_API in basic_types.h and remove legacy types and bool macros 2026-08-28 08:32:19 -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
Android.mk [libyuv] Update build files with missing sources and sort lists 2026-09-03 11:02:07 -07:00
AUTHORS Fix same-width vertical point upsampling 2026-08-24 19:28:50 -07:00
BUILD.bazel [libyuv] Simplify RVV configuration in BUILD.bazel and libyuv.bzl 2026-09-08 17:50:17 -07:00
BUILD.gn [libyuv] Update build files with missing sources and sort lists 2026-09-03 11:02:07 -07:00
CM_linux_packages.cmake Use grep extended regex for version 2024-11-13 02:11:17 +00:00
CMakeLists.txt Enable RVV support in CMake and Bazel for RISC-V targets 2026-09-04 13:20:27 -07:00
codereview.settings [infra] remove no longer supported git cl upload setting. 2021-04-28 12:47:52 +00:00
DEPS [DEPS] Add CPython CIPD package for hermetic Python toolchain 2026-08-19 20:31:30 -07:00
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 GEMINI.md: Update Arm wording and guidance 2026-08-18 11:21:14 -07:00
libyuv.bzl [libyuv] Simplify RVV configuration in BUILD.bazel and libyuv.bzl 2026-09-08 17:50:17 -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 [libyuv] Update build files with missing sources and sort lists 2026-09-03 11:02:07 -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 Remove magjed from OWNERS 2026-08-24 10:43:21 -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
README.chromium [libyuv] Add SwapUVRow_AVX2 and NV12ToNV21 2026-09-04 12:23:24 -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.