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Sergei Trofimovich f428a642e3 libyuv: fix libyuv.so underlinking 
When `libyuv` is built with `jpeg` support it does not directly link
`libjpeg` in any form. As a result dynamic loading of the library
fails as:

    >>> import pillow_avif._avif
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    ImportError: /usr/lib/libyuv.so: undefined symbol: jpeg_resync_to_restart

We can reproduce the same problem at build time if we build `libyuv` with
`LDFLAGS=-Wl,--no-undefined`:

    [ 99%] Linking CXX executable yuvconstants
    ld: CMakeFiles/yuv_shared.dir/source/mjpeg_decoder.cc.o: in function `libyuv::MJpegDecoder::MJpegDecoder()':
    mjpeg_decoder.cc:(.text+0xfc): undefined reference to `jpeg_resync_to_restart'
    ld: mjpeg_decoder.cc:(.text+0x136): undefined reference to `jpeg_std_error'
    ld: mjpeg_decoder.cc:(.text+0x194): undefined reference to `jpeg_CreateDecompress'

The change links `libgpeg` against `libyuv` itself to make it a
self-contained library. This fixes both loading if the library
itself and fixes linking of the library against other binaries
without explicit need for passing `-ljpeg`.

Change-Id: I044acb3799920e1536bdb3388442a40d4839348b
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/4050883
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: Mirko Bonadei <mbonadei@chromium.org>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
2022-11-28 18:29:29 +00:00
build_overrides Roll chromium_revision 829c6df33d..7d683aeda8 (945687:1050091) 2022-09-22 14:56:57 +00:00
docs RAWToJNV21 function with 2 step conversion 2022-03-01 19:33:49 +00:00
include DetilePlane_16 AVX version 2022-11-18 23:59:06 +00:00
infra/config [infra] Allow project-libyuv-admins group to trigger LED tasks 2022-11-01 12:40:22 +00:00
source DetilePlane_16 AVX version 2022-11-18 23:59:06 +00:00
tools_libyuv Remove --send-mail from roll script 2022-11-02 17:15:17 +00:00
unit_test Add Detile_16 planar function for 10 bit MT2T format 2022-11-17 02:47:57 +00:00
util I420ToRGB24MatrixFilter function added 2022-09-16 19:46:47 +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 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 libyuv: fix libyuv.so underlinking 2022-11-28 18:29:29 +00:00
codereview.settings [infra] remove no longer supported git cl upload setting. 2021-04-28 12:47:52 +00:00
DEPS Roll chromium_revision 1c174f8519..504c069755 (1067099:1074965) 2022-11-23 10:19:11 +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 [code-health] Migrate presubmit to python3 2022-09-26 21:57:55 +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 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 Add vzeroupper to AVX row functions 2022-11-17 23:00:08 +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.