coffee/libyuv
1
0
Fork 0
mirror of https://chromium.googlesource.com/libyuv/libyuv synced 2025-12-08 01:36:47 +08:00
Code Issues Packages Projects Releases Wiki Activity
2,625 Commits 3 Branches 0 Tags BSD-3-Clause 60 MiB
C++ 95.5%
C 2.2%
Python 1.6%
CMake 0.3%
Starlark 0.2%
Other 0.1%
Go to file
George Steed cd4113f4e8 [AArch64] Add SVE2 implementation of I400ToARGBRow 
This is mostly a copy of the I422ToARGBRow_SVE2 implementation, but we
can pre-calculate the UV component results before the loop body.

Unlike in the Neon version of the code we can make use of MOVPRFX and
USQADD to avoid needing to apply the bias separately from the UV
coefficient multiply additions.

Reduction in runtime observed compared to the existing Neon code:

Cortex-A510: -26.1%
Cortex-A520:  -5.9%
Cortex-A715: -49.5%
Cortex-A720: -49.4%
  Cortex-X2: -22.5%
  Cortex-X3: -23.5%
  Cortex-X4: -21.6%

Bug: libyuv:973
Change-Id: Ib9fc52bd53a1c6a1aac8bd865ab88539aca098ea
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5598767
Reviewed-by: Justin Green <greenjustin@google.com>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
2024-06-13 22:02:06 +00:00
build_overrides Define enable_safe_libcxx in build_overrides/build.gni. 2023-05-03 06:08:40 +00:00
docs [docs] Add documentation on AArch64 SME for feature detection 2024-06-03 22:39:03 +00:00
include [AArch64] Add SVE2 implementation of I400ToARGBRow 2024-06-13 22:02:06 +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 [RISC-V] Support CMake build with custom compiler flags 2023-07-25 09:21:59 +00:00
source [AArch64] Add SVE2 implementation of I400ToARGBRow 2024-06-13 22:02:06 +00:00
tools_libyuv Do not roll the Fuchsia SDK. 2023-07-03 09:18:00 +00:00
unit_test [AArch64] Add SME feature detection on Linux 2024-06-08 23:34:22 +00:00
util [AArch64] Print the SVE and SME vector lengths in cpu_id 2024-06-10 17:53:18 +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 [AArch64] Add initial build system support for SME 2024-06-08 23:32:41 +00:00
CM_linux_packages.cmake Reduce cmake verbosity and update min version 2022-08-03 06:59:54 +00:00
CMakeLists.txt [AArch64] Add initial build system support for SME 2024-06-08 23:32:41 +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 [AArch64] Add initial build system support for SME 2024-06-08 23:32:41 +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 Fix environment variable LIBYUV_CPU_INFO for unittests 2024-04-20 17:41:56 +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.