emgr

License ​

emgr is licensed under the MIT License. The full text below is reproduced from the repository's LICENSE file.

text
MIT License

Copyright (c) 2025 Stephane SEGNING LAMBOU

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Third-party notices ​

emgr has no C or C++ dependencies (#134) — every image codec it uses is implemented in Rust and statically linked into the binary. That did not clear every third-party attribution obligation, though: one licence survived the rewrite. Reproduced from the repository's NOTICE file:

  • jpeg-encoder ((MIT OR Apache-2.0) AND IJG) is used for JPEG encoding, replacing mozjpeg/mozjpeg-sys (which vendored libjpeg-turbo and Independent JPEG Group (IJG) code - see the changelog). It is easy to assume rewriting a codec in Rust sheds a C library's licence, but jpeg-encoder is itself licensed (MIT OR Apache-2.0) AND IJG: its default quantisation and Huffman tables derive from the IJG reference implementation. Per the IJG license, this software is based in part on the work of the Independent JPEG Group, and that notice stays required for as long as jpeg-encoder is a dependency.
  • jpeg-decoder (MIT OR Apache-2.0) is used for DCT-scaled and full-size JPEG decoding, also replacing mozjpeg/mozjpeg-sys. No IJG obligation attaches to this crate.
  • vaam-image-webp (MIT OR Apache-2.0), this org's fork of image-rs/image-webp, is used for WebP encoding and decoding, replacing the webp crate (real libwebp via FFI).
  • ravif + rav1e (BSD-2-Clause) is used for AVIF encoding, replacing libavif/AOM.
  • avif-decode + rav1d (BSD-2-Clause) is used for AVIF decoding, replacing libavif/dav1d. rav1d is a Rust port of dav1d and carries its BSD-2-Clause license.

Full license texts for every dependency ship with those crates and are reproduced in the dependency tree under ~/.cargo/registry (or your project's vendored Cargo.lock-resolved sources). cargo-deny's licenses check (deny.toml, run in CI) enforces that every dependency's declared license is one this project allows - see Contributing for running it locally.

Released under the MIT License.