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James Zern e626925cef lossless: fix crunch mode w/WEBP_REDUCE_SIZE 
WEBP_REDUCE_SIZE was introduced to bring down the library size by
removing cropping and scaling support. Previously WebPPictureView() was
only used with these two, but in
  ec178f2c Add progress hook granularity in lossless
an additional use was added in VP8LEncodeStream() when extra side
configurations are used in crunch mode (-mt, quality == 100 & method ==
6 or quality >= 75 & method == 5 with a palette present currently).

WebPPictureView() and, for coherency, WebPPictureIsView() are
restored in this configuration to avoid affecting the general encode
path.

Previously WebPPictureView() was assumed to always succeed in these
cases which could result in crashes with WEBP_REDUCE_SIZE defined.

Bug: chromium:1345547
Bug: chromium:1345595
Bug: chromium:1345772
Bug: chromium:1345804
Change-Id: Ifecde36a726a434510478a764514b1469942c684
(cherry picked from commit 84163d9d02)
2022-08-03 23:57:12 +00:00
cmake WEBP_DEP_LIBRARIES: use Threads::Threads 2022-05-31 17:09:09 -05:00
doc Rename Huffman coding to prefix coding in the bitstream spec 2022-06-16 10:56:03 -07:00
examples vwebp: fix file name display in windows unicode build 2022-07-05 12:59:06 -07:00
extras bump version to 1.2.3 2022-06-30 19:30:31 -07:00
gradle/wrapper update gradle to 6.1.1 2021-01-02 15:51:55 -08:00
imageio tiffdec: add grayscale support 2022-03-31 21:43:29 -07:00
infra run_static_analysis.sh: fix scan-build archive path 2022-06-13 16:17:42 -07:00
m4 autoconf: update ax_pthread.m4 2013-12-29 11:56:21 -05:00
man man/cwebp.1: add note about crop/resize order 2022-03-17 16:08:34 -07:00
sharpyuv libsharpyuv: add version defines 2022-06-28 11:08:14 +02:00
src lossless: fix crunch mode w/WEBP_REDUCE_SIZE 2022-08-03 23:57:12 +00:00
swig Markdownify libwebp docs and reorganize them. 2022-02-15 15:31:56 +00:00
tests Markdownify libwebp docs and reorganize them. 2022-02-15 15:31:56 +00:00
webp_js Markdownify libwebp docs and reorganize them. 2022-02-15 15:31:56 +00:00
.gitattributes update gradle to 6.1.1 2021-01-02 15:51:55 -08:00
.gitignore .gitignore: add Android Studio & VS code dirs 2022-04-04 10:28:06 -07:00
.mailmap update .mailmap 2022-06-30 19:29:53 -07:00
.pylintrc presubmit: Add pylint-2.7 and .pylintrc 2021-10-12 01:01:14 +00:00
.style.yapf Reformat docstrings and imports 2021-10-04 23:42:35 +00:00
Android.mk sharpyuv: increase precision of gamma<->linear conversion 2022-06-01 15:38:44 +02:00
AUTHORS update AUTHORS 2022-06-30 19:30:27 -07:00
autogen.sh build: just use autoreconf, avoid calling tools manually 2011-03-26 09:50:31 -07:00
build.gradle sharpyuv: increase precision of gamma<->linear conversion 2022-06-01 15:38:44 +02:00
ChangeLog update ChangeLog 2022-07-15 12:48:16 -07:00
CMakeLists.txt CMakeLists.txt: correct libwebpmux name in WebPConfig.cmake 2022-07-21 19:12:38 -07:00
codereview.settings add codereview.settings 2018-11-07 19:12:35 -08:00
configure.ac bump version to 1.2.3 2022-06-30 19:30:31 -07:00
CONTRIBUTING.md add CONTRIBUTING.md 2021-04-23 18:35:44 -07:00
COPYING Initial commit 2010-09-30 09:55:07 -04:00
gradle.properties Add gradle support 2016-05-24 15:35:20 +02:00
gradlew update gradle to 6.1.1 2021-01-02 15:51:55 -08:00
gradlew.bat update gradle to 6.1.1 2021-01-02 15:51:55 -08:00
iosbuild.sh fix ios build scripts after sharpyuv dep added 2022-03-08 19:52:45 -08:00
Makefile.am Make libwebp depend on libsharpyuv. 2022-03-04 11:35:03 +01:00
makefile.unix makefile.unix: add sharpyuv objects to clean target 2022-07-05 10:41:14 -07:00
Makefile.vc sharpyuv: increase precision of gamma<->linear conversion 2022-06-01 15:38:44 +02:00
NEWS update NEWS 2022-06-30 19:30:31 -07:00
PATENTS fix typo: constitutes -> constitute 2015-04-18 08:46:53 -07:00
PRESUBMIT.py patch-check: detect duplicated files 2021-12-17 00:25:43 +00:00
README.md bump version to 1.2.3 2022-06-30 19:30:31 -07:00
xcframeworkbuild.sh fix ios build scripts after sharpyuv dep added 2022-03-08 19:52:45 -08:00

README.md

WebP Codec

      __   __  ____  ____  ____
     /  \\/  \/  _ \/  _ )/  _ \
     \       /   __/  _  \   __/
      \__\__/\____/\_____/__/ ____  ___
            / _/ /    \    \ /  _ \/ _/
           /  \_/   / /   \ \   __/  \__
           \____/____/\_____/_____/____/v1.2.3

WebP codec is a library to encode and decode images in WebP format. This package contains the library that can be used in other programs to add WebP support, as well as the command line tools 'cwebp' and 'dwebp' to compress and decompress images respectively.

See https://developers.google.com/speed/webp for details on the image format.

The latest source tree is available at https://chromium.googlesource.com/webm/libwebp

It is released under the same license as the WebM project. See https://www.webmproject.org/license/software/ or the "COPYING" file for details. An additional intellectual property rights grant can be found in the file PATENTS.

Building

See the building documentation.

Encoding and Decoding Tools

The examples/ directory contains tools to encode and decode images and animations, view information about WebP images, and more. See the tools documentation.

APIs

See the APIs documentation, and API usage examples in the examples/ directory.

Bugs

Please report all bugs to the issue tracker: https://bugs.chromium.org/p/webp

Patches welcome! See how to contribute.

Discuss

Email: webp-discuss@webmproject.org

Web: https://groups.google.com/a/webmproject.org/group/webp-discuss