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James Zern 306335198d muxread: fix reading of buffers > riff size 
After:
  2c70ad76 muxread,CreateInternal: fix riff size checks (cl/200674839)

`SizeWithPadding()` adds `CHUNK_HEADER_SIZE` (plus additional 1 byte
padding if needed). A later check included `CHUNK_HEADER_SIZE` before
capping the value of the size passed to `WebPMuxCreateInternal()`,
missing cases with a small amount of extra data after the RIFF chunk
(like a newline when the file is opened and saved in a text editor) and
setting size to an incorrect value, so larger sizes would also fail.

Another check of `riff_size < CHUNK_HEADER_SIZE` after the call to
`SizeWithPadding()` is removed because 1) it could not fail given
`SizeWithPadding()` adds `CHUNK_HEADER_SIZE` to the value; and 2) it is
redundant as `size < RIFF_HEADER_SIZE + CHUNK_HEADER_SIZE` is checked
earlier in the function.

Bug: webp:42340561
Change-Id: I58dc4f071b27c2841001b4012aabdb1869f64f97
2024-11-22 12:40:34 -08:00
cmake Check for the presence of the ANDROID_ABI variable 2024-03-06 14:50:30 +01:00
doc gif2webp: add -sharp_yuv/-near_lossless 2024-11-04 12:29:24 -08:00
examples gif2webp: add -sharp_yuv/-near_lossless 2024-11-04 12:29:24 -08:00
extras normalize example exit status 2024-05-01 10:38:44 -07:00
gradle/wrapper update gradle to 6.1.1 2021-01-02 15:51:55 -08:00
imageio Fix hidden myerr in my_error_exit 2024-07-11 15:59:57 +02:00
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 gif2webp: add -sharp_yuv/-near_lossless 2024-11-04 12:29:24 -08:00
sharpyuv yuv.h: update RGB<->YUV coefficients in comment 2024-11-21 16:21:45 -08:00
src muxread: fix reading of buffers > riff size 2024-11-22 12:40:34 -08:00
swig Markdownify libwebp docs and reorganize them. 2022-02-15 15:31:56 +00:00
tests Fix fuzztest link errors w/-DBUILD_SHARED_LIBS=1 2024-08-28 11:39:11 +02:00
webp_js webp_js/*.html: fix canvas mapping 2024-03-29 12:53:05 -07:00
.cmake-format.py add .cmake-format.py 2023-05-30 13:54:06 -07:00
.gitattributes update gradle to 6.1.1 2021-01-02 15:51:55 -08:00
.gitignore Add huffman_fuzzer to .gitignore 2024-06-01 10:21:54 -05:00
.mailmap update .mailmap 2023-06-01 17:13:21 -07:00
.pylintrc presubmit: Add pylint-2.7 and .pylintrc 2021-10-12 01:01:14 +00:00
.style.yapf Update yapf style from "chromium" to "yapf" 2023-02-23 18:10:53 -05:00
Android.mk mv SharpYuvEstimate420Risk to extras/ 2024-01-12 15:25:27 -08:00
AUTHORS update AUTHORS 2024-04-01 15:37:40 -07:00
autogen.sh build: just use autoreconf, avoid calling tools manually 2011-03-26 09:50:31 -07:00
build.gradle mv SharpYuvEstimate420Risk to extras/ 2024-01-12 15:25:27 -08:00
ChangeLog update ChangeLog 2024-04-12 13:48:48 -07:00
CMakeLists.txt gif2webp: add -sharp_yuv/-near_lossless 2024-11-04 12:29:24 -08:00
codereview.settings add codereview.settings 2018-11-07 19:12:35 -08:00
configure.ac update link to issue tracker 2024-07-18 16:49:45 -07:00
CONTRIBUTING.md CONTRIBUTING.md: add C style / cmake-format notes 2023-05-30 13:54:12 -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 {ios,xcframework}build.sh: fix compilation w/Xcode 16 2024-11-14 20:26:57 +00:00
Makefile.am Make libwebp depend on libsharpyuv. 2022-03-04 11:35:03 +01:00
makefile.unix mv SharpYuvEstimate420Risk to extras/ 2024-01-12 15:25:27 -08:00
Makefile.vc Makefile.vc: fix gif2webp link error 2024-11-06 10:14:05 -08:00
NEWS update NEWS 2024-04-12 12:34:22 -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 README.md: add security report note 2024-08-26 18:34:04 -07:00
xcframeworkbuild.sh {ios,xcframework}build.sh: fix compilation w/Xcode 16 2024-11-14 20:26:57 +00:00

README.md

WebP Codec

      __   __  ____  ____  ____
     /  \\/  \/  _ \/  _ )/  _ \
     \       /   __/  _  \   __/
      \__\__/\____/\_____/__/ ____  ___
            / _/ /    \    \ /  _ \/ _/
           /  \_/   / /   \ \   __/  \__
           \____/____/\_____/_____/____/v1.4.0

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. For security reports, select 'Security report' from the Template dropdown.

Patches welcome! See how to contribute.

Discuss

Email: webp-discuss@webmproject.org

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