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Frank Barchard 97b3990dec NV21ToRAW and NV12ToRAW functions added 
RAW is a big endian style RGB buffer with R first in memory, then G and B.
Convert NV21 and NV12 to RAW format.

Performance on SkylakeX for 720p with AVX2
I420ToRAW_Opt (388 ms)
H420ToRAW_Opt (371 ms)
NV12ToRAW_Opt (341 ms)
NV21ToRAW_Opt (339 ms)

SSSE3
I420ToRAW_Opt (507 ms)
H420ToRAW_Opt (481 ms)
NV12ToRAW_Opt (498 ms)
NV21ToRAW_Opt (493 ms)

C
I420ToRAW_Opt (2287 ms)
H420ToRAW_Opt (2246 ms)
NV12ToRAW_Opt (2191 ms)
NV21ToRAW_Opt (2204 ms)

Performance on Pixel 2 for 720p
out/Release/bin/run_libyuv_unittest -v -t 7200 --gtest_filter=*NV??ToR*Opt --libyuv_repeat=1000 --libyuv_width=1280 --libyuv_height=720
LibYUVConvertTest.NV12ToRGB24_Opt (1739 ms)
LibYUVConvertTest.NV21ToRGB24_Opt (1734 ms)
LibYUVConvertTest.NV12ToRAW_Opt (1719 ms)
LibYUVConvertTest.NV21ToRAW_Opt (1691 ms)
LibYUVConvertTest.NV12ToRGB565_Opt (2152 ms)

Bug: libyuv:778, b:117522975
Test: add new NV21ToRAW and NV12ToRAW tests
Change-Id: Ieabb68a2c6d8c26743e609c5696c81bb14fb253f
Reviewed-on: https://chromium-review.googlesource.com/c/1272615
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
2018-10-10 18:11:10 +00:00
build_overrides Make libyuv use the hermetic xcode toolchain. 2018-03-20 08:28:33 +00:00
docs Documentation update for GYP and envionment variables 2018-09-04 19:45:41 +00:00
include NV21ToRAW and NV12ToRAW functions added 2018-10-10 18:11:10 +00:00
infra/config Remove Android MIPs BB builder 2018-08-17 18:33:22 +00:00
source NV21ToRAW and NV12ToRAW functions added 2018-10-10 18:11:10 +00:00
tools_libyuv Autoroller: pull some updates from WebRTC's copy of the script 2018-10-05 18:31:15 +00:00
unit_test NV21ToRAW and NV12ToRAW functions added 2018-10-10 18:11:10 +00:00
util libyuv:loongson optimize compare/row/scale/rotate files with mmi. 2018-07-20 22:53:04 +00:00
.clang-format clang-format libyuv 2016-11-07 17:37:23 -08:00
.gitignore Rename convert to yuvconvert to avoid name clash with linux util 2017-04-06 18:58:42 +00:00
.gn Make libyuv use the hermetic xcode toolchain. 2018-03-20 08:28:33 +00:00
.vpython [vpython]: Add pypiwin32 2018-07-31 19:31:36 +00:00
Android.bp MMI ifdef guards and add source to various build files. 2018-08-03 18:37:23 +00:00
Android.mk MMI ifdef guards and add source to various build files. 2018-08-03 18:37:23 +00:00
AUTHORS Revert "Allow negative height when ConvertToI420/ARGB is called with NV12/NV21" 2018-06-01 00:19:40 +00:00
BUILD.gn libyuv:loongson optimize compare/row/scale/rotate files with mmi. 2018-07-20 22:53:04 +00:00
cleanup_links.py Use DEPS for all dependencies + add PRESUBMIT.py 2017-02-03 11:36:53 +00:00
CM_linux_packages.cmake Add installer builds to cmake for linux 2017-01-26 23:05:17 +00:00
CMakeLists.txt Make the gflags library optional in the CMake build 2018-03-31 00:40:15 +00:00
codereview.settings Make Gerrit the default for libyuv code reviews 2017-01-24 18:34:48 +00:00
DEPS Remove GYP support from libyuv 2018-09-04 18:29:39 +00:00
download_vs_toolchain.py Roll chromium_revision 260824:262938 + fix binutils. Since it's not possible to have platform-specific hooks executing, binutils must be downloaded for all platforms in order for the download.py hook to execute properly on non-unix platforms. 2014-04-11 23:40:41 +00:00
libyuv.gni libyuv:loongson optimize compare/row/scale/rotate files with mmi. 2018-07-20 22:53:04 +00:00
LICENSE Update Copyright notice to follow new chromium conventions. 2012-08-08 19:04:24 +00:00
linux.mk MMI ifdef guards and add source to various build files. 2018-08-03 18:37:23 +00:00
OWNERS Remove kjellander@ and torbjorng@ from OWNERS. 2017-09-26 18:48:09 +00:00
PATENTS LibYuv: Adding PATENT and LICENSE files 2011-10-25 16:15:49 +00:00
PRESUBMIT.py Use DEPS for all dependencies + add PRESUBMIT.py 2017-02-03 11:36:53 +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 NV21ToRAW and NV12ToRAW functions added 2018-10-10 18:11:10 +00:00
README.md README: fix doc links 2018-08-13 18:28:55 +00:00
winarm.mk Adds files and functions for rotate any, but does not hook them up to the caller. 2015-07-27 10:32:08 -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 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.