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James Zern 78ed683978 fix overread in Intra4Preds_NEON 
Extend VP8EncIterator::i4_boundary_ by 3 bytes to avoid Intra4Preds_NEON
reading deeper into the struct (likely padding) when top is positioned
at offset 29. This data is memset with MSan to prevent a warning due to
its incorrect modeling of tbl instructions.

Prior to:
  169dfbf9 disable Intra4Preds_NEON
there was a mismatch in the preprocessor checks for enabling the
function in NEON and removing the C version; NEON used `BPS == 32` while
the C code was removed unconditionally when building for aarch64. This
patch also normalizes those checks to look for `BPS == 32` and `BPS !=
32` as appropriate.

Bug: b:366668849,webp:372109644
Change-Id: Ic9e6ad4b2d844cb446decd63aec0b2676a89c8d0
2024-10-08 16:55:12 -07:00
cmake Check for the presence of the ANDROID_ABI variable 2024-03-06 14:50:30 +01:00
doc webp-container-spec: normalize notes & unknown chunk link 2024-09-27 11:07:10 -07:00
examples img2webp: add -exact/-noexact per-frame options 2024-09-03 18:58:13 -07:00
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 man/{cwebp,img2webp}.1: rm 'if needed' from -sharp_yuv 2024-09-17 11:03:04 -07:00
sharpyuv Improve documentation of SharpYuvConversionMatrix. 2024-10-03 10:35:58 +02:00
src fix overread in Intra4Preds_NEON 2024-10-08 16:55:12 -07:00
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
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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