| commit | 8d8b58a3f517ef8d1794baa28ca6ae7d19f65514 | [log] [tgz] |
|---|---|---|
| author | Yannis Guyon <yguyon@google.com> | Wed May 15 15:05:53 2024 +0000 |
| committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | Wed May 15 15:05:53 2024 +0000 |
| tree | 1092a87b364fcb865489dbe368ea8dbd1e195488 | |
| parent | db13ece3e86317d0ace5d0dcb025f224304e5a44 [diff] | |
| parent | 6bbb0faf71f645dfb577c8c26fb79dd77ac4cb01 [diff] |
Merge "Minor fixes and small refactor in libavifinfo" into main
libavifinfo is a standalone library that can be used to extract the width, height, bit depth, number of channels and other metadata from an AVIF payload.
See avifinfo.h for details on the API and avifinfo.c for the implementation. See tests/avifinfo_demo.cc for API usage examples.
libavifinfo can be used when only a few AVIF features are needed and when linking to or including libavif is not an option. For decoding an image or extracting more features, please rely on libavif.
Note: The C implementation AvifInfoGetFeatures() is designed to return the same avifImage field values as avifDecoderParse(). However libavifinfo is often more permissive and may return features of images considered invalid by libavif.
Google C/C++ Style Guide is used in this project.
avifinfo.c is written in C. To build from this directory:
cmake -S . -B build && \ cmake --build build --config Release
GoogleTest is required for the C++ tests (e.g. sudo apt install libgtest-dev).
cmake -S . -B build -DAVIFINFO_BUILD_TESTS=ON && \ cmake --build build --config Debug && \ ctest --test-dir build build
The PHP implementation of libavifinfo is a subset of the C API.
libavifinfo was implemented into php-src natively and is available through getimagesize() at head. If it is not available in the PHP release version you use, you can fallback to avifinfo.php instead.
See avifinfo_test.php for a usage example.
cd tests && \ php avifinfo_test.php
If you would like to contribute to libavifinfo, please follow the steps for libaom at https://aomedia.googlesource.com/aom/#submitting-patches. Summary:
cd libavifinfo && curl -Lo .git/hooks/commit-msg https://chromium-review.googlesource.com/tools/hooks/commit-msg && chmod u+x .git/hooks/commit-msggit push https://aomedia.googlesource.com/libavifinfo/ HEAD:refs/for/mainBug reports can be filed in the Alliance for Open Media issue tracker.