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libwebp-1.3.1 - 6/23/2023: version 1.3.1 This is a binary compatible release. * security fixes for lossless encoder (#603, chromium: #1420107, #1455619, CVE-2023-1999) * improve error reporting through WebPPicture error codes * fix upsampling for RGB565 and RGBA4444 in NEON builds * img2webp: add -sharp_yuv & -near_lossless * Windows builds: - fix compatibility with clang-cl (#607) - improve Arm64 performance with cl.exe - add Arm64EC support * fix webp_js with emcc >= 3.1.27 (stack size change, #614) * CMake fixes (#592, #610, #612) * further updates to the container and lossless bitstream docs (#581, #611) * tag 'v1.3.1': update ChangeLog update NEWS enc/*: normalize WebPEncodingSetError() calls enc/*: add missing WebPEncodingSetError() calls EncodeAlphaInternal: add missing error check vp8l_enc,WriteImage: add missing error check muxread,MuxImageParse: add missing error checks cmake,emscripten: explicitly set stack size WebPDecodeYUV: check u/v/stride/uv_stride ptrs Call png_get_channels() to see if image has alpha update ChangeLog update NEWS bump version to 1.3.1 update AUTHORS update .mailmap Bug: webp:608 Bug: b/281615350 Change-Id: Ic3e1956c92fef0ae22040bbc3e81b297c65008af
WebP Codec
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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