# QuadChroma - Third-Party Notices

**Date:** 16 October 2026
**Applies to:** QuadChroma 1.0 - the Windows program `quadchroma.exe` (client and host role, target `x86_64-pc-windows-msvc`, built with Rust 1.98.1 from `client/Cargo.lock` as released with 1.0, static Microsoft C runtime) together with the three FFmpeg DLLs `avcodec-63.dll`, `avutil-61.dll` and `avformat-63.dll` described in section 2, the Windows setup and uninstaller (section 6), and the macOS app `QuadChroma.app` (bundle identifier `tech.quadchroma.host`; the Rust client for `aarch64-apple-darwin` with the Objective-C/C host engine built in, and the Sparkle update framework, section 7).
**Maintainer / licensor:** Robert Brandt, <hello@quadchroma.tech>, <https://quadchroma.tech>

This file accompanies every binary distribution of QuadChroma (the Windows setup/portable ZIP and the macOS DMG/ZIP) and is kept unchanged in the source repository. It lists every third-party component contained in, or shipped next to, the distributed binaries, states the license each component is under, reproduces the license texts verbatim and records where the exact source code of the FFmpeg libraries comes from.

The third-party components are **not** covered by QuadChroma's own licence (`LICENSE.txt`, a proprietary notice, and the QuadChroma Licence Terms at https://quadchroma.tech/terms/). Each of them is governed solely by its own license as reproduced below; `LICENSE.txt` and the Licence Terms (section 9 and the list of what is not allowed) say so expressly: the licences of these components take precedence. In particular, QuadChroma's terms do not restrict modifying or replacing the LGPL-licensed FFmpeg libraries for your own use, or reverse engineering QuadChroma for debugging such modifications (LGPL 2.1, section 6); `LICENSE.txt` permits this expressly. Nothing in this file itself grants any right in QuadChroma.

Conventions: SPDX identifiers are used for license names; where a component offers a choice of licenses, the line *applied* states which option QuadChroma takes. Verbatim texts are shown in fenced blocks and were copied from the upstream repository at the revision that was actually built (the source URL is given above each block; the URL points to the pinned commit or tag). SHA-256 values are lower-case hexadecimal.

## Contents

1. What QuadChroma distributes, and what it does not
2. FFmpeg (Windows download only)
   - 2.1 Notice
   - 2.2 How the FFmpeg DLLs were built
   - 2.3 Source code and written offer
   - 2.4 Replacing the FFmpeg DLLs
   - 2.5 FFmpeg files under other permissive terms
   - 2.6 NVIDIA codec headers
   - 2.7 Compiler runtime linked into the DLLs (libgcc, libstdc++, winpthreads, MinGW-w64)
   - 2.8 AMD AMF headers
   - 2.9 Intel VPL dispatcher (libvpl)
3. Rust crates (Windows program, statically linked)
   - 3.8 NVIDIA NVAPI declarations
4. macOS app (QuadChroma.app): host engine and system parts
5. Rust crates in the macOS app (Mac client)
6. NSIS (Windows setup and uninstaller)
7. Sparkle (macOS app: updates)
- Appendix A: GNU General Public License, version 3
- Appendix B: GNU Lesser General Public License, version 2.1
- Appendix C: Apache License, Version 2.0

## 1. What QuadChroma distributes, and what it does not

| File | Platform | Own code | Third-party content | Where in this file |
|---|---|---|---|---|
| `quadchroma.exe` | Windows 10/11, x64 | Rust (client and host role) | Rust crates compiled into the executable, the Rust standard library and the static Microsoft C runtime. FFmpeg is **not** inside the executable; it is loaded from the three DLLs below. | 3 |
| `avcodec-63.dll`, `avutil-61.dll`, `avformat-63.dll` | Windows, x64 | none | FFmpeg 9.0.2 (libavcodec, libavutil, libavformat), built by the QuadChroma maintainer with five small changes (2.2); NVIDIA codec headers; AMD AMF headers; the Intel VPL dispatcher (libvpl, statically linked); compiler runtime. | 2 |
| `FFMPEG-BUILDINFO.txt` | Windows | - | Sizes and SHA-256 of the three DLLs as built (before signing) and the exact build configuration. | 2.2 |
| `QuadChroma.app` | macOS 14 or later | Rust (client) with the Objective-C/C host engine built in | Rust crates compiled into the executable (section 5), Monocypher (vendored), one function of clang's builtins library, Apple system frameworks. No FFmpeg. | 4, 5 |
| `QuadChroma.app/Contents/Frameworks/Sparkle.framework` | macOS | none | Sparkle 2.9.6, the update framework of the Mac app, unchanged as released upstream; its licence file is also in the app as `Contents/Resources/Sparkle-LICENSE.txt`. | 7 |
| Windows setup and `Uninstall.exe` | Windows | installer scripts (`installer/`) | NSIS 3.13 installer runtime, Modern UI 2, language resources and standard plug-ins. | 6 |

The portable Windows package consists of `quadchroma.exe`, the three DLLs, `FFMPEG-BUILDINFO.txt`, `LICENSE.txt`, this file, `README.txt` (a short README) and `MANUAL.txt` (the manual) - all text files in the packages are plain `.txt`. The Windows setup installs the same files plus `Uninstall.exe`. The macOS package consists of `QuadChroma.app` and the same text files (without the FFmpeg build information); the app also carries them inside, in `QuadChroma.app/Contents/Resources`, so they travel with every copy of it.

**One app per platform, each client and host at once.** `quadchroma.exe` is the whole Windows program (client and host role in one process); `QuadChroma.app` is the whole Mac program. The Mac client is the executable of `QuadChroma.app`: the Rust client (the same source as the Windows program) is the app's only executable, with the host engine from `host/` compiled into it. There are no separate host or client downloads. Windows setup and its independent uninstaller use NSIS (section 6); host-support processes use the same QuadChroma executable.

**FFmpeg is only in the Windows download.** The Mac app decodes and encodes with Apple's VideoToolbox and contains no FFmpeg (`ffmpeg-next` is a Windows-only dependency); its Rust crates are listed in section 5. The FFmpeg source files offered next to the Windows downloads belong to the Windows package (section 2.3).

**Video formats and patents.** QuadChroma grants no patent licences for video formats such as H.264, HEVC or AV1. Video encoding and decoding uses the operating system (on the Mac Apple's VideoToolbox, on Windows Media Foundation), the graphics driver or, on Windows, the included FFmpeg libraries (section 2).

## 2. FFmpeg (Windows download only)

`quadchroma.exe` decodes video (and, in the Windows host role, encodes it) with libraries of the FFmpeg project. They are shipped as separate DLLs next to the executable and loaded by Windows when the program starts:

| File | FFmpeg library | Version |
|---|---|---|
| `avcodec-63.dll` | libavcodec (major version 63) | FFmpeg 9.0.2 |
| `avutil-61.dll` | libavutil (major version 61) | FFmpeg 9.0.2 |
| `avformat-63.dll` | libavformat (major version 63; no muxers/demuxers enabled in this build) | FFmpeg 9.0.2 |

### 2.1 Notice

**This software uses libraries from the FFmpeg project under the LGPLv2.1.** FFmpeg is Copyright (c) 2000-2026 the FFmpeg developers and is free software licensed under the GNU Lesser General Public License, version 2.1 or (at your option) any later version; the license text is reproduced in Appendix B and at <https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html>. The source code is available as described in 2.3. FFmpeg is a trademark of Fabrice Bellard, originator of the FFmpeg project (<https://ffmpeg.org/legal.html>).

Robert Brandt does not own FFmpeg. Its copyright holders are the FFmpeg developers named in the FFmpeg source (`CREDITS`, `MAINTAINERS` and the version history at <https://git.ffmpeg.org/ffmpeg.git>).

`quadchroma.exe` is not licensed under the LGPL. It is a "work that uses the Library" in the sense of section 5 of the LGPL v2.1 and is combined with the FFmpeg libraries only at run time, through Windows' dynamic linking of the DLLs named above (section 6(b)). QuadChroma's own license (`LICENSE.txt`) does not restrict any right the LGPL gives you and expressly permits what section 6 requires: you may modify the FFmpeg libraries for your own use, replace the DLLs with modified versions (2.4), and reverse engineer QuadChroma to the extent necessary to debug such modifications.

### 2.2 How the FFmpeg DLLs were built

The DLLs are built by the QuadChroma maintainer from the FFmpeg 9.0.2 release with **five small changes**, kept as patch files in `scripts/ffmpeg-patches/` of the QuadChroma source repository and licensed like FFmpeg (LGPL version 2.1 or later):

- `0001-nvenc-bitrate-ohne-idr.patch` - libavcodec/nvenc.c: a change of the bit rate alone is applied to the running NVENC session without resetting the encoder and without forcing an IDR frame (a change of the aspect ratio still resets it).
- `0002-mfenc-bitrate-im-betrieb.patch` - libavcodec/mfenc.c: a new bit rate is passed to the running Media Foundation encoder, without a key frame and without reopening it.
- `0003-qsvenc-rate-im-betrieb.patch` - libavcodec/qsvenc.c: a change of the bit rate alone is applied to the running Intel Quick Sync session on its actual parameters, without starting a new coded sequence; if the runtime refuses, the session keeps its rate.
- `0004-amfenc-rate-im-betrieb.patch` - libavcodec/amfenc.c and amfenc.h: a new bit rate (target, peak and VBV buffer) is passed to the running AMD AMF encoder before the next frame, without reinitialising it and without forcing a key frame; if the encoder refuses, the session keeps its rate.
- `0005-qsvenc-ausgabepuffer.patch` - libavcodec/qsvenc.c and qsvenc.h: every coded picture of an Intel Quick Sync session is written into an output buffer as large as the picture uncompressed (buffers from a pool per session) and handed out in a packet of exactly its coded size; the status of each picture is checked, and an error comes with the runtime's own status.

The build script applies them before `configure`; the table below and `FFMPEG-BUILDINFO.txt` name each patch with its SHA-256, and the version string of the DLLs ends in `quadchroma-qc5` (`qc1` was the build with the first two changes, `qc2` the one with the first three, `qc3` the one with the first four, `qc4` the one with the first three and the fifth). The build contains **no GPL or "nonfree" code**: nothing is auto-detected, every component is enabled explicitly, and FFmpeg's `configure` reports `License: LGPL version 2.1 or later` (the build script stops if it reports anything else). Besides FFmpeg, the DLLs contain only MIT-licensed vendor code: the NVIDIA codec headers (2.6), the AMD AMF headers (2.8) and the Intel VPL dispatcher `libvpl` (2.9), the only external library, which is linked statically.

| Input | Where it comes from | SHA-256 |
|---|---|---|
| FFmpeg 9.0.2 release archive `ffmpeg-9.0.2.tar.xz` | <https://ffmpeg.org/releases/ffmpeg-9.0.2.tar.xz> | `8c3850283eb25fa026482078a04051e0be17347b09ef81a0849bec15a96e002e` |
| NVIDIA codec headers (compile-time headers only, see 2.6), FFmpeg `nv-codec-headers` commit `ced4f8eba3ba5dd431932cba17928f0dffdaeb2b`, branch `sdk/13.0` (NVENC API 13.0) | <https://github.com/FFmpeg/nv-codec-headers/archive/ced4f8eba3ba5dd431932cba17928f0dffdaeb2b.tar.gz> | `625ddd8f2a603699fdba101bebcde0e7a97bcc7b8a82ec7f45a7d06d61336597` |
| AMD AMF headers 1.5.2 (compile-time headers only, see 2.8), header archive `AMF-headers-v1.5.2.tar.gz` of the AMF release v1.5.2 | <https://github.com/GPUOpen-LibrariesAndSDKs/AMF/releases/download/v1.5.2/AMF-headers-v1.5.2.tar.gz> | `d3c12eb324edf05e214608b6a395a51dd95770ed9d45520185d6c3a206811c99` |
| AMF license text `LICENSE.txt` at the release's tag commit `eadd00804d5f7e5cd8c85d540073198312870776` (the header archive contains no license file) | <https://raw.githubusercontent.com/GPUOpen-LibrariesAndSDKs/AMF/eadd00804d5f7e5cd8c85d540073198312870776/LICENSE.txt> | `eb297397aaa455b5668ab67d216b83828466152dab123fa92384c6ec16b74170` |
| Intel VPL dispatcher `libvpl` 2.17.0 (see 2.9), commit `d77f9195cf495b937631607333288fd917ae8939` (tag `v2.17.0`) | <https://github.com/intel/libvpl/archive/d77f9195cf495b937631607333288fd917ae8939.tar.gz> | `0a73dcda7abd6cde00d11a58dceb25670a93df5e98c80ef9c96aa1fcdff8ce9a` |
| QuadChroma change `0001-nvenc-bitrate-ohne-idr.patch` (see the list above) | `scripts/ffmpeg-patches/` of the QuadChroma source; offered next to the Windows downloads (2.3) | `5ac5d6651958d71f8eea7aa4938e3a375c5d074b84ec27b98f15d2bf0e1a1b40` |
| QuadChroma change `0002-mfenc-bitrate-im-betrieb.patch` (see the list above) | `scripts/ffmpeg-patches/` of the QuadChroma source; offered next to the Windows downloads (2.3) | `d0b370318cc6fb542ebe704493dcbf2200549ac6de242b8bc7a8e3e37b541152` |
| QuadChroma change `0003-qsvenc-rate-im-betrieb.patch` (see the list above) | `scripts/ffmpeg-patches/` of the QuadChroma source; offered next to the Windows downloads (2.3) | `53168a2c1e24f6109adc6a1dedd04d52d7ac2a2d72b67d8b90393d94eac649c2` |
| QuadChroma change `0004-amfenc-rate-im-betrieb.patch` (see the list above) | `scripts/ffmpeg-patches/` of the QuadChroma source; offered next to the Windows downloads (2.3) | `b0697fae21841005e43f27d4fc2eee902a96a16510ae51e228d96373caf61972` |
| QuadChroma change `0005-qsvenc-ausgabepuffer.patch` (see the list above) | `scripts/ffmpeg-patches/` of the QuadChroma source; offered next to the Windows downloads (2.3) | `0549e12488eba0ad9523bed6a0661b837e572306ad3880169e9686530713af8e` |

- **Toolchain:** the MinGW-w64 cross compilers `x86_64-w64-mingw32-gcc` and `x86_64-w64-mingw32-g++` (GCC), NASM and CMake from Homebrew, target `x86_64-w64-mingw32`; C library: the Universal C Runtime (UCRT) that is part of Windows 10 and 11. This file was prepared for MinGW-w64 14.0.0, GCC 16.2.0, NASM 3.02 and CMake 4.4.4; the exact versions used for a given package are recorded in its `FFMPEG-BUILDINFO.txt`.
- **Build instructions:** the script `scripts/build-ffmpeg-windows.sh` in the QuadChroma source repository. It downloads the archives above, checks their SHA-256, installs the NVIDIA and AMF headers into a private prefix, builds `libvpl` there as a static library with its own CMake build (release configuration, no tests, no examples), and runs `configure`, `make` and `make install` with this configuration (also stored in the DLLs themselves, see `avutil_configuration()`):

```text
--prefix=/ffmpeg --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --pkg-config=pkg-config --enable-shared --disable-static --disable-programs --disable-doc --disable-debug --disable-autodetect --disable-everything --disable-avdevice --disable-avfilter --disable-swscale --disable-swresample --disable-network --enable-w32threads --enable-d3d11va --enable-dxva2 --enable-mediafoundation --enable-ffnvcodec --enable-cuda --enable-cuvid --enable-nvdec --enable-nvenc --enable-amf --enable-libvpl --enable-decoder='hevc,h264,hevc_cuvid,h264_cuvid,hevc_qsv,h264_qsv,av1_qsv' --enable-encoder='hevc_nvenc,h264_nvenc,av1_nvenc,hevc_mf,h264_mf,hevc_amf,h264_amf,av1_amf,hevc_qsv,h264_qsv,av1_qsv' --enable-parser='hevc,h264' --enable-hwaccel='hevc_d3d11va,hevc_d3d11va2,h264_d3d11va,h264_d3d11va2,hevc_dxva2,h264_dxva2,hevc_nvdec,h264_nvdec' --extra-ldflags=-static --extra-version=quadchroma-qc5
```

- **Enabled components:** decoders `h264`, `hevc`, `h264_cuvid`, `hevc_cuvid`, `h264_qsv`, `hevc_qsv`, `av1_qsv`; encoders `h264_nvenc`, `hevc_nvenc`, `av1_nvenc`, `h264_mf`, `hevc_mf`, `h264_amf`, `hevc_amf`, `av1_amf`, `h264_qsv`, `hevc_qsv`, `av1_qsv`; parsers `h264`, `hevc`; bitstream filters `h264_mp4toannexb`, `hevc_mp4toannexb`; hardware acceleration through Direct3D 11 (D3D11VA), DXVA2, NVIDIA NVDEC/CUVID/NVENC, AMD AMF, Intel Quick Sync Video (through Intel VPL) and Windows Media Foundation. The vendor driver libraries (NVIDIA `nvcuda.dll`, `nvcuvid.dll`, `nvEncodeAPI64.dll`; AMD `amfrt64.dll`; the Intel VPL/Media SDK runtime of the Intel graphics driver) are part of the respective graphics driver, are loaded at run time only if present, and are not shipped.
- `avformat-63.dll` contains no muxers, demuxers or protocols; it is shipped because `quadchroma.exe` loads it at start.
- **Exact files:** size and SHA-256 of the three DLLs as built, the compiler, MinGW-w64 and NASM versions and the configuration are recorded in `FFMPEG-BUILDINFO.txt` in the Windows package (written by the build script). The shipped DLLs also carry an Authenticode signature of Robert Brandt, appended to each file; it changes the file's SHA-256, not its code. Removing it (`signtool remove /s <dll>`, from the Windows SDK) gives back exactly the file recorded in `FFMPEG-BUILDINFO.txt`.

### 2.3 Source code and written offer

The complete corresponding source code of the three DLLs consists of the four source archives in 2.2 (FFmpeg, NVIDIA codec headers, AMF headers, libvpl), the five patch files and the build script `scripts/build-ffmpeg-windows.sh`. You can obtain it in any of these ways:

1. **From the same place as the binaries.** The QuadChroma update server <https://quadchroma.tech/updates/v1/> distributes the three DLLs in the Windows setup and portable ZIP (folder <https://quadchroma.tech/updates/v1/downloads/>) and in the Windows update packages that the program installs itself (folder <https://quadchroma.tech/updates/v1/packages/>). Next to the downloads, in <https://quadchroma.tech/updates/v1/downloads/>, it also offers `ffmpeg-9.0.2.tar.xz`, `nv-codec-headers-ced4f8eba3ba5dd431932cba17928f0dffdaeb2b.tar.gz`, `AMF-headers-v1.5.2.tar.gz`, `libvpl-d77f9195cf495b937631607333288fd917ae8939.tar.gz`, `0001-nvenc-bitrate-ohne-idr.patch`, `0002-mfenc-bitrate-im-betrieb.patch`, `0003-qsvenc-rate-im-betrieb.patch`, `0004-amfenc-rate-im-betrieb.patch`, `0005-qsvenc-ausgabepuffer.patch` and `build-ffmpeg-windows.sh`: equivalent access to the source code from the same place as the binaries, for the downloads and the update packages alike (LGPL v2.1 section 4 for the DLLs, which are the Library, modified under section 2, in object code form, and section 6(d)).
2. **Upstream:** the URLs in 2.2; the SHA-256 values identify the exact archives.
3. **Written offer.** For at least three years after the last distribution of a QuadChroma Windows package, Robert Brandt will give any third party, for a charge no more than the cost of physically performing the source distribution, a complete machine-readable copy of the corresponding source code of the FFmpeg libraries shipped in that package, as listed above. Write to <hello@quadchroma.tech> (LGPL v2.1 section 6(c)).

### 2.4 Replacing the FFmpeg DLLs

`quadchroma.exe` uses the public API of libavcodec, libavutil and the linked libavformat and loads the DLLs by their standard names. You may build your own, possibly modified, FFmpeg 9.0.x with the same major versions (libavcodec 63, libavutil 61, libavformat 63) - for example with a modified copy of `scripts/build-ffmpeg-windows.sh` - and replace `avcodec-63.dll`, `avutil-61.dll` and `avformat-63.dll` next to `quadchroma.exe` with your builds. The names of the DLLs must stay the same, because Windows loads them by name. With a build that does not carry the changes from 2.2 (its version string does not end in `quadchroma-qc1` to `quadchroma-qc5`), everything works as before, except that the Windows host keeps a fixed data rate ("Data rate: Automatic" needs the changes; with Intel Quick Sync the third one, with AMD AMF the fourth). Your builds need no signature: QuadChroma never checks the signature of these DLLs. Windows itself may refuse to load an unsigned DLL while Smart App Control is switched on.

### 2.5 FFmpeg files under other permissive terms

FFmpeg's `LICENSE.md` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/LICENSE.md>) states that most of FFmpeg is licensed under the LGPL v2.1 or later and that some files carry MIT/X11/BSD-style licenses; in combination the LGPL v2.1 or later applies. The following such files are compiled into the shipped DLLs (determined from the dependency files of this build). Their license headers are reproduced verbatim from the FFmpeg 9.0.2 source.

**This software is based in part on the work of the Independent JPEG Group.** The files `libavcodec/jfdctfst.c`, `libavcodec/jfdctint_template.c` and `libavcodec/jrevdct.c` derive from the Independent JPEG Group's libjpeg and are contained, unmodified, in `avcodec-63.dll`.

*`libavcodec/jfdctfst.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/jfdctfst.c>):*

```text
/*
 * This file is part of the Independent JPEG Group's software.
 *
 * The authors make NO WARRANTY or representation, either express or implied,
 * with respect to this software, its quality, accuracy, merchantability, or
 * fitness for a particular purpose.  This software is provided "AS IS", and
 * you, its user, assume the entire risk as to its quality and accuracy.
 *
 * This software is copyright (C) 1994-1996, Thomas G. Lane.
 * All Rights Reserved except as specified below.
 *
 * Permission is hereby granted to use, copy, modify, and distribute this
 * software (or portions thereof) for any purpose, without fee, subject to
 * these conditions:
 * (1) If any part of the source code for this software is distributed, then
 * this README file must be included, with this copyright and no-warranty
 * notice unaltered; and any additions, deletions, or changes to the original
 * files must be clearly indicated in accompanying documentation.
 * (2) If only executable code is distributed, then the accompanying
 * documentation must state that "this software is based in part on the work
 * of the Independent JPEG Group".
 * (3) Permission for use of this software is granted only if the user accepts
 * full responsibility for any undesirable consequences; the authors accept
 * NO LIABILITY for damages of any kind.
 *
 * These conditions apply to any software derived from or based on the IJG
 * code, not just to the unmodified library.  If you use our work, you ought
 * to acknowledge us.
 *
 * Permission is NOT granted for the use of any IJG author's name or company
 * name in advertising or publicity relating to this software or products
 * derived from it.  This software may be referred to only as "the Independent
 * JPEG Group's software".
 *
 * We specifically permit and encourage the use of this software as the basis
 * of commercial products, provided that all warranty or liability claims are
 * assumed by the product vendor.
 *
 * This file contains a fast, not so accurate integer implementation of the
 * forward DCT (Discrete Cosine Transform).
 *
 * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT
 * on each column.  Direct algorithms are also available, but they are
 * much more complex and seem not to be any faster when reduced to code.
 *
 * This implementation is based on Arai, Agui, and Nakajima's algorithm for
 * scaled DCT.  Their original paper (Trans. IEICE E-71(11):1095) is in
 * Japanese, but the algorithm is described in the Pennebaker & Mitchell
 * JPEG textbook (see REFERENCES section in file README).  The following code
 * is based directly on figure 4-8 in P&M.
 * While an 8-point DCT cannot be done in less than 11 multiplies, it is
 * possible to arrange the computation so that many of the multiplies are
 * simple scalings of the final outputs.  These multiplies can then be
 * folded into the multiplications or divisions by the JPEG quantization
 * table entries.  The AA&N method leaves only 5 multiplies and 29 adds
 * to be done in the DCT itself.
 * The primary disadvantage of this method is that with fixed-point math,
 * accuracy is lost due to imprecise representation of the scaled
 * quantization values.  The smaller the quantization table entry, the less
 * precise the scaled value, so this implementation does worse with high-
 * quality-setting files than with low-quality ones.
 */

/**
 * @file
 * Independent JPEG Group's fast AAN dct.
 */
```

*`libavcodec/jfdctint_template.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/jfdctint_template.c>):*

```text
/*
 * This file is part of the Independent JPEG Group's software.
 *
 * The authors make NO WARRANTY or representation, either express or implied,
 * with respect to this software, its quality, accuracy, merchantability, or
 * fitness for a particular purpose.  This software is provided "AS IS", and
 * you, its user, assume the entire risk as to its quality and accuracy.
 *
 * This software is copyright (C) 1991-1996, Thomas G. Lane.
 * All Rights Reserved except as specified below.
 *
 * Permission is hereby granted to use, copy, modify, and distribute this
 * software (or portions thereof) for any purpose, without fee, subject to
 * these conditions:
 * (1) If any part of the source code for this software is distributed, then
 * this README file must be included, with this copyright and no-warranty
 * notice unaltered; and any additions, deletions, or changes to the original
 * files must be clearly indicated in accompanying documentation.
 * (2) If only executable code is distributed, then the accompanying
 * documentation must state that "this software is based in part on the work
 * of the Independent JPEG Group".
 * (3) Permission for use of this software is granted only if the user accepts
 * full responsibility for any undesirable consequences; the authors accept
 * NO LIABILITY for damages of any kind.
 *
 * These conditions apply to any software derived from or based on the IJG
 * code, not just to the unmodified library.  If you use our work, you ought
 * to acknowledge us.
 *
 * Permission is NOT granted for the use of any IJG author's name or company
 * name in advertising or publicity relating to this software or products
 * derived from it.  This software may be referred to only as "the Independent
 * JPEG Group's software".
 *
 * We specifically permit and encourage the use of this software as the basis
 * of commercial products, provided that all warranty or liability claims are
 * assumed by the product vendor.
 *
 * This file contains a slow-but-accurate integer implementation of the
 * forward DCT (Discrete Cosine Transform).
 *
 * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT
 * on each column.  Direct algorithms are also available, but they are
 * much more complex and seem not to be any faster when reduced to code.
 *
 * This implementation is based on an algorithm described in
 *   C. Loeffler, A. Ligtenberg and G. Moschytz, "Practical Fast 1-D DCT
 *   Algorithms with 11 Multiplications", Proc. Int'l. Conf. on Acoustics,
 *   Speech, and Signal Processing 1989 (ICASSP '89), pp. 988-991.
 * The primary algorithm described there uses 11 multiplies and 29 adds.
 * We use their alternate method with 12 multiplies and 32 adds.
 * The advantage of this method is that no data path contains more than one
 * multiplication; this allows a very simple and accurate implementation in
 * scaled fixed-point arithmetic, with a minimal number of shifts.
 */

/**
 * @file
 * Independent JPEG Group's slow & accurate dct.
 */
```

*`libavcodec/jrevdct.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/jrevdct.c>):*

```text
/*
 * This file is part of the Independent JPEG Group's software.
 *
 * The authors make NO WARRANTY or representation, either express or implied,
 * with respect to this software, its quality, accuracy, merchantability, or
 * fitness for a particular purpose.  This software is provided "AS IS", and
 * you, its user, assume the entire risk as to its quality and accuracy.
 *
 * This software is copyright (C) 1991, 1992, Thomas G. Lane.
 * All Rights Reserved except as specified below.
 *
 * Permission is hereby granted to use, copy, modify, and distribute this
 * software (or portions thereof) for any purpose, without fee, subject to
 * these conditions:
 * (1) If any part of the source code for this software is distributed, then
 * this README file must be included, with this copyright and no-warranty
 * notice unaltered; and any additions, deletions, or changes to the original
 * files must be clearly indicated in accompanying documentation.
 * (2) If only executable code is distributed, then the accompanying
 * documentation must state that "this software is based in part on the work
 * of the Independent JPEG Group".
 * (3) Permission for use of this software is granted only if the user accepts
 * full responsibility for any undesirable consequences; the authors accept
 * NO LIABILITY for damages of any kind.
 *
 * These conditions apply to any software derived from or based on the IJG
 * code, not just to the unmodified library.  If you use our work, you ought
 * to acknowledge us.
 *
 * Permission is NOT granted for the use of any IJG author's name or company
 * name in advertising or publicity relating to this software or products
 * derived from it.  This software may be referred to only as "the Independent
 * JPEG Group's software".
 *
 * We specifically permit and encourage the use of this software as the basis
 * of commercial products, provided that all warranty or liability claims are
 * assumed by the product vendor.
 *
 * This file contains the basic inverse-DCT transformation subroutine.
 *
 * This implementation is based on an algorithm described in
 *   C. Loeffler, A. Ligtenberg and G. Moschytz, "Practical Fast 1-D DCT
 *   Algorithms with 11 Multiplications", Proc. Int'l. Conf. on Acoustics,
 *   Speech, and Signal Processing 1989 (ICASSP '89), pp. 988-991.
 * The primary algorithm described there uses 11 multiplies and 29 adds.
 * We use their alternate method with 12 multiplies and 32 adds.
 * The advantage of this method is that no data path contains more than one
 * multiplication; this allows a very simple and accurate implementation in
 * scaled fixed-point arithmetic, with a minimal number of shifts.
 *
 * I've made lots of modifications to attempt to take advantage of the
 * sparse nature of the DCT matrices we're getting.  Although the logic
 * is cumbersome, it's straightforward and the resulting code is much
 * faster.
 *
 * A better way to do this would be to pass in the DCT block as a sparse
 * matrix, perhaps with the difference cases encoded.
 */

/**
 * @file
 * Independent JPEG Group's LLM idct.
 */
```

*`libavcodec/faandct.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/faandct.c>):*

```text
/*
 * Floating point AAN DCT
 * this implementation is based upon the IJG integer AAN DCT (see jfdctfst.c)
 *
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
 * Copyright (c) 2003 Roman Shaposhnik
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/**
 * @file
 * @brief
 *     Floating point AAN DCT
 * @author Michael Niedermayer <michaelni@gmx.at>
 */
```

*`libavutil/avsscanf.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/avsscanf.c>):*

```text
/*
 * Copyright (c) 2005-2014 Rich Felker, et al.
 *
 * 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.
 */
```

*`libavutil/libm.h` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/libm.h>):*

```text
/*
 * erf function: Copyright (c) 2006 John Maddock
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * Replacements for frequently missing libm functions
 */
```

*`libavutil/fixed_dsp.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/fixed_dsp.c>):*

```text
/*
 * Copyright (c) 2012
 *      MIPS Technologies, Inc., California.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Author:  Nedeljko Babic (nedeljko.babic imgtec com)
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
```

*`libavutil/fixed_dsp.h` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/fixed_dsp.h>):*

```text
/*
 * Copyright (c) 2012
 *      MIPS Technologies, Inc., California.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * Author:  Nedeljko Babic (nbabic@mips.com)
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
```

*`libavcodec/aom_film_grain_template.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/aom_film_grain_template.c>):*

```text
/*
 * AOM film grain synthesis
 * Copyright (c) 2023 Niklas Haas <ffmpeg@haasn.xyz>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/*
 * Copyright © 2018, Niklas Haas
 * Copyright © 2018, VideoLAN and dav1d authors
 * Copyright © 2018, Two Orioles, LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
```

*`libavutil/uuid.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/uuid.c>):*

```text
/*
 * Copyright (c) 2022 Pierre-Anthony Lemieux <pal@palemieux.com>
 *                    Zane van Iperen <zane@zanevaniperen.com>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/*
 * Copyright (C) 1996, 1997 Theodore Ts'o.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, and the entire permission notice in its entirety,
 *    including the disclaimer of warranties.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

/**
 * @file
 * UUID parsing and serialization utilities.
 * The library treat the UUID as an opaque sequence of 16 unsigned bytes,
 * i.e. ignoring the internal layout of the UUID, which depends on the type
 * of the UUID.
 *
 * @author Pierre-Anthony Lemieux <pal@palemieux.com>
 * @author Zane van Iperen <zane@zanevaniperen.com>
 */
```

*`libavutil/adler32.c` (<https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/adler32.c>):*

```text
/*
 * Compute the Adler-32 checksum of a data stream.
 * This is a modified version based on adler32.c from the zlib library.
 *
 * Copyright (C) 1995 Mark Adler
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */

/**
 * @file
 * Computes the Adler-32 checksum of a data stream
 *
 * This is a modified version based on adler32.c from the zlib library.
 * @author Mark Adler
 * @ingroup lavu_adler32
 */
```

### 2.6 NVIDIA codec headers

- **What:** FFmpeg's copy of the NVIDIA Video Codec SDK headers (`nv-codec-headers`, commit `ced4f8eba3ba5dd431932cba17928f0dffdaeb2b`, branch `sdk/13.0`). They contain only declarations and small loader functions that are compiled into `avcodec-63.dll` and `avutil-61.dll`; the NVIDIA driver libraries themselves are loaded at run time and are not shipped.
- **License:** MIT (license header in each file).
- **Source:** <https://github.com/FFmpeg/nv-codec-headers/tree/ced4f8eba3ba5dd431932cba17928f0dffdaeb2b>

*License header of `include/ffnvcodec/dynlink_cuda.h`, `include/ffnvcodec/dynlink_loader.h`:*

```text
/*
 * This copyright notice applies to this header file only:
 *
 * Copyright (c) 2016
 *
 * 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.
 */
```

*License header of `include/ffnvcodec/dynlink_cuviddec.h`, `include/ffnvcodec/dynlink_nvcuvid.h`, `include/ffnvcodec/nvEncodeAPI.h`:*

```text
/*
 * This copyright notice applies to this header file only:
 *
 * Copyright (c) 2010-2024 NVIDIA Corporation
 *
 * 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.
 */
```

### 2.7 Compiler runtime linked into the DLLs (libgcc, libstdc++, winpthreads, MinGW-w64)

The DLLs are linked with `-static`, so the parts of the compiler runtime they need are contained in them and no `libgcc_s_seh-1.dll`, `libstdc++-6.dll` or `libwinpthread-1.dll` is shipped. The only imports of the DLLs besides each other are Windows system libraries (`KERNEL32.dll`, `USER32.dll`, `ADVAPI32.dll`, `ole32.dll`, `bcrypt.dll` and the UCRT `api-ms-win-crt-*` libraries).

#### libgcc (GCC 16.2.0)

- **License:** GPL-3.0-or-later WITH GCC-exception-3.1 (GNU GPL v3 in Appendix A, together with the GCC Runtime Library Exception 3.1 below).
- **Copyright:** Free Software Foundation, Inc.
- **Source:** <https://gcc.gnu.org/git/gcc.git>, tag `releases/gcc-16.2.0`.
- **Meaning:** the GCC Runtime Library Exception permits distributing the Target Code produced by GCC, including the portions of the runtime library it contains, under terms of the distributor's choice, provided the code was produced by an Eligible Compilation Process. The FFmpeg DLLs remain under the LGPL v2.1 or later (2.1).

*File `COPYING.RUNTIME` (<https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=COPYING.RUNTIME;hb=releases/gcc-16.2.0>):*

```text
GCC RUNTIME LIBRARY EXCEPTION

Version 3.1, 31 March 2009

Copyright (C) 2009 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

This GCC Runtime Library Exception ("Exception") is an additional
permission under section 7 of the GNU General Public License, version
3 ("GPLv3"). It applies to a given file (the "Runtime Library") that
bears a notice placed by the copyright holder of the file stating that
the file is governed by GPLv3 along with this Exception.

When you use GCC to compile a program, GCC may combine portions of
certain GCC header files and runtime libraries with the compiled
program. The purpose of this Exception is to allow compilation of
non-GPL (including proprietary) programs to use, in this way, the
header files and runtime libraries covered by this Exception.

0. Definitions.

A file is an "Independent Module" if it either requires the Runtime
Library for execution after a Compilation Process, or makes use of an
interface provided by the Runtime Library, but is not otherwise based
on the Runtime Library.

"GCC" means a version of the GNU Compiler Collection, with or without
modifications, governed by version 3 (or a specified later version) of
the GNU General Public License (GPL) with the option of using any
subsequent versions published by the FSF.

"GPL-compatible Software" is software whose conditions of propagation,
modification and use would permit combination with GCC in accord with
the license of GCC.

"Target Code" refers to output from any compiler for a real or virtual
target processor architecture, in executable form or suitable for
input to an assembler, loader, linker and/or execution
phase. Notwithstanding that, Target Code does not include data in any
format that is used as a compiler intermediate representation, or used
for producing a compiler intermediate representation.

The "Compilation Process" transforms code entirely represented in
non-intermediate languages designed for human-written code, and/or in
Java Virtual Machine byte code, into Target Code. Thus, for example,
use of source code generators and preprocessors need not be considered
part of the Compilation Process, since the Compilation Process can be
understood as starting with the output of the generators or
preprocessors.

A Compilation Process is "Eligible" if it is done using GCC, alone or
with other GPL-compatible software, or if it is done without using any
work based on GCC. For example, using non-GPL-compatible Software to
optimize any GCC intermediate representations would not qualify as an
Eligible Compilation Process.

1. Grant of Additional Permission.

You have permission to propagate a work of Target Code formed by
combining the Runtime Library with Independent Modules, even if such
propagation would otherwise violate the terms of GPLv3, provided that
all Target Code was generated by Eligible Compilation Processes. You
may then convey such a combination under terms of your choice,
consistent with the licensing of the Independent Modules.

2. No Weakening of GCC Copyleft.

The availability of this Exception does not imply any general
presumption that third-party software is unaffected by the copyleft
requirements of the license of GCC.
```

#### libstdc++ (GCC 16.2.0)

The Intel VPL dispatcher (2.9) is written in C++; the parts of the GNU C++ standard library it uses are linked into both DLLs.

- **License:** GPL-3.0-or-later WITH GCC-exception-3.1, the same terms as libgcc above (GNU GPL v3 in Appendix A, GCC Runtime Library Exception 3.1 reproduced under libgcc).
- **Copyright:** Free Software Foundation, Inc.
- **Source:** <https://gcc.gnu.org/git/gcc.git>, tag `releases/gcc-16.2.0` (directory `libstdc++-v3`).
- **Meaning:** as for libgcc - the DLLs remain under the LGPL v2.1 or later (2.1).

#### winpthreads (MinGW-w64 14.0.0)

- **License:** MIT AND BSD-3-Clause (parts derived from Lockless Inc.)
- **Copyright:** Copyright (c) 2011 mingw-w64 project; (C) 2010 Lockless Inc.
- **Source:** <https://github.com/mingw-w64/mingw-w64/tree/v14.0.0/mingw-w64-libraries/winpthreads> (tag `v14.0.0`, commit `e25dbe3428ce40d7321606a5642623a5a6e3da73`)

*File `mingw-w64-libraries/winpthreads/COPYING` (<https://raw.githubusercontent.com/mingw-w64/mingw-w64/v14.0.0/mingw-w64-libraries/winpthreads/COPYING>):*

```text
Copyright (c) 2011 mingw-w64 project

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.


/*
 * Parts of this library are derived by:
 *
 * Posix Threads library for Microsoft Windows
 *
 * Use at own risk, there is no implied warranty to this code.
 * It uses undocumented features of Microsoft Windows that can change
 * at any time in the future.
 *
 * (C) 2010 Lockless Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of Lockless Inc. nor the names of its contributors may be
 *    used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AN
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
```

#### MinGW-w64 runtime (mingw-w64-crt 14.0.0)

- **License:** the collection of licenses the MinGW-w64 project provides for programs and libraries statically linked against its runtime (reproduced below).
- **Copyright:** the mingw-w64 project and the holders named in the text.
- **Source:** <https://github.com/mingw-w64/mingw-w64/tree/v14.0.0> (tag `v14.0.0`)

*File `COPYING.MinGW-w64-runtime/COPYING.MinGW-w64-runtime.txt` (<https://raw.githubusercontent.com/mingw-w64/mingw-w64/v14.0.0/COPYING.MinGW-w64-runtime/COPYING.MinGW-w64-runtime.txt>):*

```text
MinGW-w64 runtime licensing
***************************

This program or library was built using MinGW-w64 and statically
linked against the MinGW-w64 runtime. Some parts of the runtime
are under licenses which require that the copyright and license
notices are included when distributing the code in binary form.
These notices are listed below.


========================
Overall copyright notice
========================

Copyright (c) 2009, 2010, 2011, 2012, 2013 by the mingw-w64 project

This license has been certified as open source. It has also been designated
as GPL compatible by the Free Software Foundation (FSF).

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   1. Redistributions in source code must retain the accompanying copyright
      notice, this list of conditions, and the following disclaimer.
   2. Redistributions in binary form must reproduce the accompanying
      copyright notice, this list of conditions, and the following disclaimer
      in the documentation and/or other materials provided with the
      distribution.
   3. Names of the copyright holders must not be used to endorse or promote
      products derived from this software without prior written permission
      from the copyright holders.
   4. The right to distribute this software or to use it for any purpose does
      not give you the right to use Servicemarks (sm) or Trademarks (tm) of
      the copyright holders.  Use of them is covered by separate agreement
      with the copyright holders.
   5. If any files are modified, you must cause the modified files to carry
      prominent notices stating that you changed the files and the date of
      any change.

Disclaimer

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY EXPRESSED
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

======================================== 
getopt, getopt_long, and getop_long_only
======================================== 

Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com> 
 
Permission to use, copy, modify, and distribute this software for any 
purpose with or without fee is hereby granted, provided that the above 
copyright notice and this permission notice appear in all copies. 
 	 
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Sponsored in part by the Defense Advanced Research Projects
Agency (DARPA) and Air Force Research Laboratory, Air Force
Materiel Command, USAF, under agreement number F39502-99-1-0512.

        *       *       *       *       *       *       * 

Copyright (c) 2000 The NetBSD Foundation, Inc.
All rights reserved.

This code is derived from software contributed to The NetBSD Foundation
by Dieter Baron and Thomas Klausner.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.


===============================================================
gdtoa: Converting between IEEE floating point numbers and ASCII
===============================================================

The author of this software is David M. Gay.

Copyright (C) 1997, 1998, 1999, 2000, 2001 by Lucent Technologies
All Rights Reserved

Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.

LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.

        *       *       *       *       *       *       *

The author of this software is David M. Gay.

Copyright (C) 2005 by David M. Gay
All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that the copyright notice and this permission notice and warranty
disclaimer appear in supporting documentation, and that the name of
the author or any of his current or former employers not be used in
advertising or publicity pertaining to distribution of the software
without specific, written prior permission.

THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN
NO EVENT SHALL THE AUTHOR OR ANY OF HIS CURRENT OR FORMER EMPLOYERS BE
LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

        *       *       *       *       *       *       *

The author of this software is David M. Gay.

Copyright (C) 2004 by David M. Gay.
All Rights Reserved
Based on material in the rest of /netlib/fp/gdota.tar.gz,
which is copyright (C) 1998, 2000 by Lucent Technologies.

Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.

LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.


=========================
Parts of the math library
=========================

Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

Developed at SunSoft, a Sun Microsystems, Inc. business.
Permission to use, copy, modify, and distribute this
software is freely granted, provided that this notice
is preserved.

        *       *       *       *       *       *       *

Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

Developed at SunPro, a Sun Microsystems, Inc. business.
Permission to use, copy, modify, and distribute this
software is freely granted, provided that this notice
is preserved.

        *       *       *       *       *       *       *

FIXME: Cephes math lib
Copyright (C) 1984-1998 Stephen L. Moshier

It sounds vague, but as to be found at
<http://lists.debian.org/debian-legal/2004/12/msg00295.html>, it gives an
impression that the author could be willing to give an explicit
permission to distribute those files e.g. under a BSD style license. So
probably there is no problem here, although it could be good to get a
permission from the author and then add a license into the Cephes files
in MinGW runtime. At least on follow-up it is marked that debian sees the
version a-like BSD one. As MinGW.org (where those cephes parts are coming
from) distributes them now over 6 years, it should be fine.

=================================================
Some string, memory and time conversion functions
=================================================

Copyright © 2005-2020 Rich Felker, et al.

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.

===================================
Headers and IDLs imported from Wine
===================================

Some header and IDL files were imported from the Wine project. These files
are prominent maked in source. Their copyright belongs to contributors and
they are distributed under LGPL license.

Disclaimer

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
```

### 2.8 AMD AMF headers

- **What:** the public headers of AMD's Advanced Media Framework (AMF) SDK, version 1.5.2 (header archive of the AMF release v1.5.2, tag commit `eadd00804d5f7e5cd8c85d540073198312870776`). They contain only declarations, constants and small inline helpers that are compiled into `avcodec-63.dll` (encoders `h264_amf`, `hevc_amf`, `av1_amf`) and `avutil-61.dll` (AMF device context); the AMF runtime `amfrt64.dll` is part of the AMD graphics driver, is loaded at run time only if present, and is not shipped.
- **License:** MIT (license header in each file; the repository's `LICENSE.txt` at the tag commit carries the same MIT permission text, with copyright 2016, and is written next to the build output as `LICENSE-AMF.txt`).
- **Copyright:** Advanced Micro Devices, Inc.
- **Source:** <https://github.com/GPUOpen-LibrariesAndSDKs/AMF/tree/eadd00804d5f7e5cd8c85d540073198312870776/amf/public/include>; archive URL and SHA-256 in 2.2.
- **Files compiled into the DLLs** (determined from the compiler's dependency output of this build): `AMF/core/AudioBuffer.h`, `AMF/core/Buffer.h`, `AMF/core/Compute.h`, `AMF/core/ComputeFactory.h`, `AMF/core/Context.h`, `AMF/core/Data.h`, `AMF/core/Debug.h`, `AMF/core/Factory.h`, `AMF/core/Interface.h`, `AMF/core/Plane.h`, `AMF/core/Platform.h`, `AMF/core/PropertyStorage.h`, `AMF/core/PropertyStorageEx.h`, `AMF/core/Result.h`, `AMF/core/Surface.h`, `AMF/core/Trace.h`, `AMF/core/Variant.h`, `AMF/components/ColorSpace.h`, `AMF/components/Component.h`, `AMF/components/ComponentCaps.h`, `AMF/components/VideoDecoderUVD.h`, `AMF/components/VideoEncoderVCE.h` (copyright 2018), `AMF/components/PreAnalysis.h` (2019) and `AMF/core/Version.h` (2017) carry the license header below with their respective year; `AMF/components/VideoEncoderHEVC.h` (2018) and `AMF/components/VideoEncoderAV1.h` (2021-2022) carry the same copyright line and MIT permission text without the two paragraphs before the copyright line.

*License header of `AMF/core/Factory.h` (<https://github.com/GPUOpen-LibrariesAndSDKs/AMF/blob/eadd00804d5f7e5cd8c85d540073198312870776/amf/public/include/core/Factory.h>):*

```text
//
// Notice Regarding Standards.  AMD does not provide a license or sublicense to
// any Intellectual Property Rights relating to any standards, including but not
// limited to any audio and/or video codec technologies such as MPEG-2, MPEG-4;
// AVC/H.264; HEVC/H.265; AAC decode/FFMPEG; AAC encode/FFMPEG; VC-1; and MP3
// (collectively, the "Media Technologies"). For clarity, you will pay any
// royalties due for such third party technologies, which may include the Media
// Technologies that are owed as a result of AMD providing the Software to you.
//
// MIT license
//
// Copyright (c) 2018 Advanced Micro Devices, Inc. All rights reserved.
//
// 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.
//
```

### 2.9 Intel VPL dispatcher (libvpl)

- **What:** the dispatcher library of the Intel Video Processing Library (`libvpl` 2.17.0, commit `d77f9195cf495b937631607333288fd917ae8939`, tag `v2.17.0`), built from source as a static library and linked into `avcodec-63.dll` (decoders and encoders `h264_qsv`, `hevc_qsv`, `av1_qsv`) and `avutil-61.dll` (QSV device context), together with its API headers (`vpl/mfx*.h`). The dispatcher finds and loads the Intel runtime that is part of the Intel graphics driver at run time, only if present; that runtime is not shipped. Not included: the repository's tests, examples and tools (`third-party-programs.txt` of the repository lists only third-party code used by those).
- **License:** MIT (`SPDX-License-Identifier: MIT` in each source file; written next to the build output as `LICENSE-libvpl.txt`).
- **Copyright:** Intel Corporation.
- **Source:** <https://github.com/intel/libvpl/tree/d77f9195cf495b937631607333288fd917ae8939>; archive URL and SHA-256 in 2.2.

*File `LICENSE` (<https://github.com/intel/libvpl/blob/d77f9195cf495b937631607333288fd917ae8939/LICENSE>):*

```text
MIT License

Copyright (c) 2020 Intel Corporation

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.
```

## 3. Rust crates (Windows program, statically linked)

`quadchroma.exe` is built for the target `x86_64-pc-windows-msvc` (one binary for the Windows client and the Windows host role, static Microsoft C runtime). The crates below are compiled into it. The list is complete for this binary; it was derived from `client/Cargo.lock` as released with 1.0 and `cargo tree --target x86_64-pc-windows-msvc -e normal`.

### 3.1 Scope and method

- Source of truth: `client/Cargo.lock` as released with 1.0 and `cargo tree --target x86_64-pc-windows-msvc -e normal` (normal dependency edges only). The build-dependencies (`cargo tree -e build`; for this target bindgen, cc, cexpr, cfg_aliases, clang-sys, find-msvc-tools, glob, itertools, libloading, memchr, minimal-lexical, nom, num_cpus, pkg-config, regex, regex-automata, regex-syntax, rustc-hash, rustc_version, semver, shlex and version_check) run only in build scripts while the program is built and put no code into it, so they are not listed; the crate has no dev-dependencies.

- 100 crates resolve for this target: 91 are compiled into the binary (or resolved as dependencies), 9 run only at build time (procedural macros and crates reached only through procedural macros). Build-time crates are listed in section 3.5.

- License choice: for `MIT OR Apache-2.0` (and any other choice that includes MIT) the MIT license is applied; Apache-2.0-only crates under Apache-2.0; `AND` expressions under all named licenses. Every copyright line below is quoted verbatim from the license file shipped in the crate (Cargo registry cache); where a crate ships no license file or no copyright line, the note says where the attribution comes from.

- NOTICE files: none of the crates listed here ships a NOTICE file (checked in the registry sources of every crate), so no Apache-2.0 NOTICE content has to be reproduced.

- Linking evidence: symbol counts (`nm`, symbols whose v0-mangled path contains the crate) in the executable of a release build of QuadChroma 1.0 for the Mac, with its symbol table kept (the shipped app carries none; the count includes the built-in Objective-C/C host engine): winit 494, snow 87, fontdue 28, curve25519-dalek 30, chacha20poly1305 2, sha2 4; ring 0, untrusted 0, blake2 0, syn 0, quote 0, proc-macro2 0, unicode-ident 0, libloading 0; C symbols with prefix `ring_core_0_17_14_`: 0. The Windows binary is built from the same Cargo features (`snow` with `default-resolver`, `use-curve25519`, `use-chacha20poly1305`, `use-sha2`, `use-getrandom`, `std`; thin LTO, one codegen unit). A release `quadchroma.exe` of QuadChroma 1.0 was searched for the crate path strings that Rust panics embed: `snow-0.10.0` 6 hits, `curve25519-dalek-4.1.3` 2, `fontdue-0.9.4` 2; `ring-0.17.14` 0, `ring_core_0_17_14_` 0, `untrusted-0.9.0` 0, `blake2-0.10.6` 0, `libloading` 0, `syn-2.0.119` 0, `quote-1.0.47` 0, `proc-macro2-1.0.107` 0, `unicode-ident-1.0.26` 0. ring's Rust code carries many panic sites, so its absence from the string table together with the Mac symbol counts shows it is not linked into the Windows binary either. The notices for ring, untrusted and blake2 are nevertheless included.

- Crates added in 1.0 (licence activation and signed updates: `ed25519-dalek`, `serde`, `serde_json`, `ureq` with `native-tls` and their dependencies) were checked the same way in that Mac build: ureq 380, http 181, ureq-proto 95, serde_json 71, serde_core 38, native-tls 25, ed25519-dalek 18; webpki-root-certs 0. `webpki-root-certs` is a dependency of ureq's `native-tls` feature; QuadChroma verifies servers against the system trust store, so its root list is not used. Its notice is nevertheless included.

### 3.2 Summary table

| Crate | Version | `license` field | Applied | Copyright / attribution | Status |
|---|---|---|---|---|---|
| aead | 0.5.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The RustCrypto Project Developers; Copyright (c) 2019 MobileCoin, LLC | linked |
| allocator-api2 | 0.2.21 | MIT OR Apache-2.0 | MIT | (no copyright line; Zakarum) | linked |
| base64 | 0.23.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2025 Alice Maz, Marshall Pierce | linked |
| base64ct | 1.8.3 | Apache-2.0 OR MIT | MIT | Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com); Copyright (c) 2021-2025 The RustCrypto Project Developers | linked |
| bitflags | 2.13.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 The Rust Project Developers | linked |
| blake2 | 0.10.6 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015-2016 The blake2-rfc Developers, Cesar Barros; Copyright (c) 2017 Artyom Pavlov | resolved, not linked |
| block-buffer | 0.10.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2019 The RustCrypto Project Developers | linked |
| bytes | 1.12.1 | MIT | MIT | Copyright (c) 2018 Carl Lerche | linked |
| cfg-if | 1.0.5 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 Alex Crichton | linked |
| chacha20 | 0.9.1 | Apache-2.0 OR MIT | MIT | Copyright (c) 2019-2023 The RustCrypto Project Developers | linked |
| chacha20poly1305 | 0.10.1 | Apache-2.0 OR MIT | MIT | Copyright (c) 2019 The RustCrypto Project Developers | linked |
| cipher | 0.4.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016-2020 RustCrypto Developers | linked |
| core_maths | 0.1.1 | MIT | MIT | Copyright (c) 2024 Robert Bastian | linked |
| cpufeatures | 0.2.17 | MIT OR Apache-2.0 | MIT | Copyright (c) 2020-2025 The RustCrypto Project Developers | linked |
| crossbeam-deque | 0.8.8 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The Crossbeam Project Developers | linked |
| crossbeam-epoch | 0.9.21 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The Crossbeam Project Developers | linked |
| crossbeam-utils | 0.8.23 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The Crossbeam Project Developers | linked |
| crypto-common | 0.1.7 | MIT OR Apache-2.0 | MIT | Copyright (c) 2021 RustCrypto Developers | linked |
| cursor-icon | 1.2.0 | MIT OR Apache-2.0 OR Zlib | MIT | Copyright (c) 2023 Kirill Chibisov; the `CursorIcon` names come from a W3C specification under the W3C Software and Document License (3.4) | linked |
| curve25519-dalek | 4.1.3 | BSD-3-Clause | BSD-3-Clause | Copyright (c) 2016-2021 isis agora lovecruft. All rights reserved.; Copyright (c) 2016-2021 Henry de Valence. All rights reserved.; Copyright (c) 2012 The Go Authors. All rights reserved. | linked |
| curve25519-dalek-derive | 0.1.1 | MIT/Apache-2.0 | MIT | (no copyright line; dalek-cryptography contributors) | build-time only (proc-macro) |
| der | 0.8.2 | Apache-2.0 OR MIT | MIT | Copyright (c) 2020-2026 The RustCrypto Project Developers; datetime code adapted from humantime, Copyright (c) 2016 The humantime Developers | linked |
| digest | 0.10.7 | MIT OR Apache-2.0 | MIT | Copyright (c) 2017 Artyom Pavlov | linked |
| dpi | 0.1.2 | Apache-2.0 AND MIT | Apache-2.0 AND MIT | Copyright (c) 2018 Jorge Aparicio; Copyright © 2005-2020 Rich Felker, et al. | linked |
| ed25519 | 2.2.3 | Apache-2.0 OR MIT | MIT | Copyright (c) 2018-2023 RustCrypto Developers | linked |
| ed25519-dalek | 2.2.0 | BSD-3-Clause | BSD-3-Clause | Copyright (c) 2017-2019 isis agora lovecruft. All rights reserved. | linked |
| either | 1.18.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 | linked |
| equivalent | 1.0.2 | Apache-2.0 OR MIT | MIT | Copyright (c) 2016--2023 | linked |
| ffmpeg-next | 9.0.0 | WTFPL | WTFPL | (no copyright line; meh., Zhiming Wang) | linked |
| ffmpeg-sys-next | 9.0.0 | WTFPL | WTFPL | (no copyright line; meh., Zhiming Wang) | linked |
| foldhash | 0.1.5 | Zlib | Zlib | Copyright (c) 2024 Orson Peters | linked |
| fontdue | 0.9.4 | MIT OR Apache-2.0 OR Zlib | MIT | Copyright (c) 2019 Joe C (mooman219) | linked |
| generic-array | 0.14.7 | MIT | MIT | Copyright (c) 2015 Bartłomiej Kamiński | linked |
| getrandom | 0.2.17 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2024 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers | linked |
| getrandom | 0.3.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2025 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers | linked |
| hashbrown | 0.15.5 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016 Amanieu d'Antras | linked |
| http | 1.5.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2017 http-rs authors | linked |
| httparse | 1.10.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015-2025 Sean McArthur | linked |
| inout | 0.1.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2022 The RustCrypto Project Developers; Copyright (c) 2022 Artyom Pavlov | linked |
| itoa | 1.0.18 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | linked |
| libc | 0.2.189 | MIT OR Apache-2.0 | MIT | Copyright (c) The Rust Project Developers | linked |
| libm | 0.2.16 | MIT | MIT | Copyright (c) 2018 Jorge Aparicio; Copyright © 2005-2020 Rich Felker, et al. | linked |
| log | 0.4.34 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 The Rust Project Developers | linked |
| memchr | 2.8.3 | Unlicense OR MIT | MIT | Copyright (c) 2015 Andrew Gallant | linked |
| native-tls | 0.2.18 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016 The rust-native-tls Developers | linked |
| opaque-debug | 0.3.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2024 The RustCrypto Project Developers | linked |
| pem-rfc7468 | 1.0.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2021-2025 The RustCrypto Project Developers | linked |
| percent-encoding | 2.3.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2013-2025 The rust-url developers | linked |
| pin-project-lite | 0.2.17 | Apache-2.0 OR MIT | MIT | (no copyright line; taiki-e (Taiki Endo)) | linked |
| poly1305 | 0.8.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2015-2019 RustCrypto Developers | linked |
| proc-macro2 | 1.0.107 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay, Alex Crichton) | build-time only (dependency of proc-macro crates only) |
| quote | 1.0.47 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | build-time only (dependency of proc-macro crates only) |
| raw-window-handle | 0.6.2 | MIT OR Apache-2.0 OR Zlib | MIT | Copyright (c) 2019 Osspial | linked |
| rayon | 1.12.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2010 The Rust Project Developers | linked |
| rayon-core | 1.13.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2010 The Rust Project Developers | linked |
| ring | 0.17.14 | Apache-2.0 AND ISC | Apache-2.0 AND ISC | Copyright 2015-2025 Brian Smith. | resolved, not linked |
| rustls-pki-types | 1.15.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2023 Dirkjan Ochtman <dirkjan@ochtman.nl> | linked |
| schannel | 0.1.29 | MIT | MIT | Copyright (c) 2015 steffengy | linked |
| serde | 1.0.229 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay) | linked |
| serde_core | 1.0.229 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay) | linked |
| serde_derive | 1.0.229 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay) | build-time only (proc-macro) |
| serde_json | 1.0.151 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay); includes code from lexical, copyright Alexander Huszagh (3.4) | linked |
| sha2 | 0.10.9 | MIT OR Apache-2.0 | MIT | Copyright (c) 2006-2009 Graydon Hoare; Copyright (c) 2009-2013 Mozilla Foundation; Copyright (c) 2016 Artyom Pavlov | linked |
| signature | 2.2.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2018-2023 RustCrypto Developers | linked |
| smol_str | 0.2.2 | MIT OR Apache-2.0 | MIT | (no copyright line; Aleksey Kladov) | linked |
| snow | 0.10.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2021 Jake McGinty | linked |
| softbuffer | 0.4.8 | MIT OR Apache-2.0 | MIT | Copyright 2022 Kirill Chibisov | linked |
| subtle | 2.6.1 | BSD-3-Clause | BSD-3-Clause | Copyright (c) 2016-2017 Isis Agora Lovecruft, Henry de Valence. All rights reserved.; Copyright (c) 2016-2024 Isis Agora Lovecruft. All rights reserved. | linked |
| syn | 2.0.119 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | build-time only (dependency of proc-macro crates only) |
| syn | 3.0.6 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | build-time only (dependency of proc-macro crates only) |
| tracing | 0.1.44 | MIT | MIT | Copyright (c) 2019 Tokio Contributors | linked |
| tracing-core | 0.1.36 | MIT | MIT | Copyright (c) 2019 Tokio Contributors | linked |
| ttf-parser | 0.25.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018 Yevhenii Reizner | linked |
| typenum | 1.20.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 Paho Lurie-Gregg | linked |
| unicode-ident | 1.0.26 | (MIT OR Apache-2.0) AND Unicode-3.0 | MIT AND Unicode-3.0 | Copyright © 1991-2023 Unicode, Inc. | build-time only (dependency of proc-macro crates only) |
| unicode-segmentation | 1.13.3 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 The Rust Project Developers | linked |
| universal-hash | 0.5.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019-2020 RustCrypto Developers | linked |
| untrusted | 0.9.0 | ISC | ISC | Copyright 2015-2016 Brian Smith. | resolved, not linked |
| ureq | 3.4.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 Martin Algesten | linked |
| ureq-proto | 0.6.4 | MIT OR Apache-2.0 | MIT | Copyright 2022 Martin Algesten | linked |
| utf8-zero | 0.8.1 | MIT OR Apache-2.0 | MIT | (no copyright line; Simon Sapin, Martin Algesten) | linked |
| webpki-root-certs | 1.0.9 | CDLA-Permissive-2.0 | CDLA-Permissive-2.0 | (no copyright line; Mozilla's trusted root certificates, derived from CCADB data) | resolved; its root list is not used (the system trust store is) |
| windows | 0.62.2 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-collections | 0.3.2 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-core | 0.62.2 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-future | 0.3.2 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-implement | 0.60.2 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | build-time only (proc-macro) |
| windows-interface | 0.59.3 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | build-time only (proc-macro) |
| windows-link | 0.2.1 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-numerics | 0.3.1 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-result | 0.4.1 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-strings | 0.5.1 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-sys | 0.52.0 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-sys | 0.61.2 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-targets | 0.52.6 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows-threading | 0.2.1 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| windows_x86_64_msvc | 0.52.6 | MIT OR Apache-2.0 | MIT | Copyright (c) Microsoft Corporation. | linked |
| winit | 0.30.13 | Apache-2.0 | Apache-2.0 | (no copyright line; The winit contributors, Pierre Krieger); the `Key` and `KeyCode` names come from W3C specifications under the W3C Software and Document License (3.4) | linked |
| zeroize | 1.9.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2018-2026 The RustCrypto Project Developers | linked |
| zmij | 1.0.23 | MIT | MIT | (no copyright line; David Tolnay) | linked |

### 3.3 Dependency-path notes (cargo tree -i, target x86_64-pc-windows-msvc)

- `ring 0.17.14` <- `snow 0.10.0` <- quadchroma. snow's `std` feature is defined as `["getrandom/std", "subtle/std", "ring/std", "blake2/std", "sha2/std"]`; the `ring/std` and `blake2/std` entries implicitly enable the optional `ring` and `blake2` dependencies although QuadChroma does not enable `ring-resolver`, `ring-accelerated` or `use-blake2`. snow only references ring under `#[cfg(feature = "ring-resolver")]`, so nothing in the binary refers to ring; the linker drops it (see the symbol counts above).

- `untrusted 0.9.0` <- `ring 0.17.14` <- `snow 0.10.0` <- quadchroma. Same status as ring.

- `libloading` is **not** in this target's dependency tree at all (`cargo tree -i libloading` prints nothing). With `--target all` it appears only on Linux (`dlib`/`wayland-sys`/`tiny-xlib` for winit and softbuffer) and as a build-dependency of `ffmpeg-sys-next` (`bindgen` -> `clang-sys`), i.e. never in this binary.

- `syn 2.0.119`, `quote 1.0.47`, `proc-macro2 1.0.107`, `unicode-ident 1.0.26` are reached only through the procedural-macro crates `curve25519-dalek-derive 0.1.1` (<- curve25519-dalek <- snow), `windows-implement 0.60.2` and `windows-interface 0.59.3` (<- windows-core <- windows); `syn 3.0.6` only through `serde_derive 1.0.229` (<- serde). Procedural macros are loaded by the compiler and are not linked into the program.

- `webpki-root-certs 1.0.9` <- `ureq 3.4.2` (feature `native-tls`) <- quadchroma; `schannel 0.1.29` <- `native-tls 0.2.18` <- `ureq 3.4.2` (Windows TLS through SChannel).

### 3.4 License texts and per-crate notices

#### MIT License

The following text is the MIT License as shipped in the crates below (identical wording in every one of them apart from the copyright line; quoted from `syn`'s LICENSE-MIT, which carries no copyright line of its own).

```text
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.
```

The MIT License above applies to the following crates. Each crate's own copyright notice, as found in its license file, is:

- **aead 0.5.2**: Copyright (c) 2019 The RustCrypto Project Developers; Copyright (c) 2019 MobileCoin, LLC
- **allocator-api2 0.2.21**: (no copyright line) The crate's MIT license file carries no copyright line. Author per Cargo.toml: Zakarum <zaq.dev@icloud.com>; repository https://github.com/zakarumych/allocator-api2.
- **base64 0.23.1**: Copyright (c) 2025 Alice Maz, Marshall Pierce
- **base64ct 1.8.3**: Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com); Copyright (c) 2021-2025 The RustCrypto Project Developers
- **bitflags 2.13.2**: Copyright (c) 2014 The Rust Project Developers
- **blake2 0.10.6**: Copyright (c) 2015-2016 The blake2-rfc Developers, Cesar Barros; Copyright (c) 2017 Artyom Pavlov
  - Note: Optional dependency of snow; enabled only as a side effect of snow's `std` feature (`blake2/std`). QuadChroma does not enable `use-blake2`; no blake2 symbols in the Mac client binary.
- **block-buffer 0.10.4**: Copyright (c) 2018-2019 The RustCrypto Project Developers
- **bytes 1.12.1**: Copyright (c) 2018 Carl Lerche
- **cfg-if 1.0.5**: Copyright (c) 2014 Alex Crichton
- **chacha20 0.9.1**: Copyright (c) 2019-2023 The RustCrypto Project Developers
- **chacha20poly1305 0.10.1**: Copyright (c) 2019 The RustCrypto Project Developers
- **cipher 0.4.4**: Copyright (c) 2016-2020 RustCrypto Developers
- **core_maths 0.1.1**: Copyright (c) 2024 Robert Bastian
- **cpufeatures 0.2.17**: Copyright (c) 2020-2025 The RustCrypto Project Developers
- **crossbeam-deque 0.8.8**: Copyright (c) 2019 The Crossbeam Project Developers
- **crossbeam-epoch 0.9.21**: Copyright (c) 2019 The Crossbeam Project Developers
- **crossbeam-utils 0.8.23**: Copyright (c) 2019 The Crossbeam Project Developers
- **crypto-common 0.1.7**: Copyright (c) 2021 RustCrypto Developers
- **cursor-icon 1.2.0**: Copyright (c) 2023 Kirill Chibisov
  - Note: the names of the `CursorIcon` variants and their documentation come from the W3C specification CSS Basic User Interface Module Level 3; the W3C Software and Document License and the W3C Short Notice that cover them are reproduced at the end of this section.
- **der 0.8.2**: Copyright (c) 2020-2026 The RustCrypto Project Developers
  - Note: `src/datetime.rs` is adapted from the humantime crate; its header reads `Copyright (c) 2016 The humantime Developers` and `Released under the MIT OR Apache 2.0 licenses` (MIT applied).
- **digest 0.10.7**: Copyright (c) 2017 Artyom Pavlov
- **ed25519 2.2.3**: Copyright (c) 2018-2023 RustCrypto Developers
- **either 1.18.0**: Copyright (c) 2015
  - Note: The LICENSE-MIT names a year but no holder; the crate has no `authors` field. Repository https://github.com/rayon-rs/either.
- **equivalent 1.0.2**: Copyright (c) 2016--2023
  - Note: The LICENSE-MIT names years but no holder; the crate has no `authors` field. Repository https://github.com/indexmap-rs/equivalent.
- **fontdue 0.9.4**: Copyright (c) 2019 Joe C (mooman219)
  - Note: fontdue bundles third-party code and ships the licenses in `licenses/`: rust-lang/libm (MIT, "Copyright (c) 2018 Jorge Aparicio") and xi-editor/xi-unicode (Apache License 2.0, text identical to the Apache-2.0 text reproduced below).
- **generic-array 0.14.7**: Copyright (c) 2015 Bartłomiej Kamiński
- **getrandom 0.2.17**: Copyright (c) 2018-2024 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers
- **getrandom 0.3.4**: Copyright (c) 2018-2025 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers
- **hashbrown 0.15.5**: Copyright (c) 2016 Amanieu d'Antras
- **http 1.5.0**: Copyright (c) 2017 http-rs authors
- **httparse 1.10.1**: Copyright (c) 2015-2025 Sean McArthur
- **inout 0.1.4**: Copyright (c) 2022 The RustCrypto Project Developers; Copyright (c) 2022 Artyom Pavlov
- **itoa 1.0.18**: (no copyright line) The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **libc 0.2.189**: Copyright (c) The Rust Project Developers
- **log 0.4.34**: Copyright (c) 2014 The Rust Project Developers
- **memchr 2.8.3**: Copyright (c) 2015 Andrew Gallant
  - Note: `license = "Unlicense OR MIT"`; MIT applied.
- **native-tls 0.2.18**: Copyright (c) 2016 The rust-native-tls Developers
- **opaque-debug 0.3.1**: Copyright (c) 2018-2024 The RustCrypto Project Developers
- **pem-rfc7468 1.0.0**: Copyright (c) 2021-2025 The RustCrypto Project Developers
- **percent-encoding 2.3.2**: Copyright (c) 2013-2025 The rust-url developers
- **pin-project-lite 0.2.17**: (no copyright line) The crate's MIT license file carries no copyright line. Repository https://github.com/taiki-e/pin-project-lite (no `authors` field).
- **poly1305 0.8.0**: Copyright (c) 2015-2019 RustCrypto Developers
- **raw-window-handle 0.6.2**: Copyright (c) 2019 Osspial
- **rayon 1.12.0**: Copyright (c) 2010 The Rust Project Developers
- **rayon-core 1.13.0**: Copyright (c) 2010 The Rust Project Developers
- **rustls-pki-types 1.15.1**: Copyright (c) 2023 Dirkjan Ochtman <dirkjan@ochtman.nl>
- **schannel 0.1.29**: Copyright (c) 2015 steffengy
- **serde 1.0.229**: (no copyright line) The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Erick Tryzelaar <erick.tryzelaar@gmail.com>, David Tolnay <dtolnay@gmail.com>.
- **serde_core 1.0.229**: (no copyright line) The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Erick Tryzelaar <erick.tryzelaar@gmail.com>, David Tolnay <dtolnay@gmail.com>.
- **serde_json 1.0.151**: (no copyright line) The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Erick Tryzelaar <erick.tryzelaar@gmail.com>, David Tolnay <dtolnay@gmail.com>.
  - Note: the crate includes code from lexical, copyright Alexander Huszagh (module `src/lexical`: "Dual licensed as MIT and Apache 2.0 just like the rest of serde_json, but copyright Alexander Huszagh"; MIT applied). serde_json compiles this module only with its `float_roundtrip` feature, which QuadChroma does not enable.
- **sha2 0.10.9**: Copyright (c) 2006-2009 Graydon Hoare; Copyright (c) 2009-2013 Mozilla Foundation; Copyright (c) 2016 Artyom Pavlov
- **signature 2.2.0**: Copyright (c) 2018-2023 RustCrypto Developers
- **smol_str 0.2.2**: (no copyright line) The crate's MIT license file carries no copyright line. Author per Cargo.toml: Aleksey Kladov <aleksey.kladov@gmail.com>.
- **snow 0.10.0**: Copyright (c) 2021 Jake McGinty
- **softbuffer 0.4.8**: Copyright 2022 Kirill Chibisov
- **tracing 0.1.44**: Copyright (c) 2019 Tokio Contributors
- **tracing-core 0.1.36**: Copyright (c) 2019 Tokio Contributors
- **ttf-parser 0.25.1**: Copyright (c) 2018 Yevhenii Reizner
- **typenum 1.20.1**: Copyright (c) 2014 Paho Lurie-Gregg
- **unicode-segmentation 1.13.3**: Copyright (c) 2015 The Rust Project Developers
- **universal-hash 0.5.1**: Copyright (c) 2019-2020 RustCrypto Developers
- **ureq 3.4.2**: Copyright (c) 2019 Martin Algesten
- **ureq-proto 0.6.4**: Copyright 2022 Martin Algesten
- **utf8-zero 0.8.1**: (no copyright line) The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Simon Sapin <simon.sapin@exyr.org>, Martin Algesten <martin@algesten.se>.
- **zeroize 1.9.0**: Copyright (c) 2018-2026 The RustCrypto Project Developers
- **zmij 1.0.23**: (no copyright line) The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.

`fontdue 0.9.4` additionally ships `licenses/rust-lang/libm` for code it bundles from rust-lang/libm:

```text
Copyright (c) 2018 Jorge Aparicio

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.
```

#### MIT License, Microsoft wording (windows-rs crates)

The windows-rs crates ship the MIT text with a title line and Microsoft's copyright line (`license-mit`):

```text
    MIT License

    Copyright (c) Microsoft Corporation.

    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
```

Applies to: windows 0.62.2, windows-collections 0.3.2, windows-core 0.62.2, windows-future 0.3.2, windows-link 0.2.1, windows-numerics 0.3.1, windows-result 0.4.1, windows-strings 0.5.1, windows-sys 0.52.0, windows-sys 0.61.2, windows-targets 0.52.6, windows-threading 0.2.1, windows_x86_64_msvc 0.52.6.

#### libm 0.2.16 (MIT), complete LICENSE.txt

`license = "MIT"`. The crate's LICENSE.txt is a compound text (MIT grant, the Apache-2.0 contributor terms, and the notices for code derived from musl libc and CORE-MATH); it is reproduced in full below.

```text
rust-lang/libm as a whole is available for use under the MIT license:

------------------------------------------------------------------------------
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.
------------------------------------------------------------------------------

As a contributor, you agree that your code can be used under either the MIT
license or the Apache-2.0 license:

------------------------------------------------------------------------------
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          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
------------------------------------------------------------------------------

This Rust library contains the following copyrights:

    Copyright (c) 2018 Jorge Aparicio

Portions of this software are derived from third-party works licensed under
terms compatible with the above MIT license:

* musl libc https://www.musl-libc.org/. This library contains the following
  copyright:

      Copyright © 2005-2020 Rich Felker, et al.

* The CORE-MATH project https://core-math.gitlabpages.inria.fr/. CORE-MATH
  routines are available under the MIT license on a per-file basis.

The musl libc COPYRIGHT file also includes the following notice relevant to
math portions of the library:

------------------------------------------------------------------------------
Much of the math library code (src/math/* and src/complex/*) is
Copyright © 1993,2004 Sun Microsystems or
Copyright © 2003-2011 David Schultz or
Copyright © 2003-2009 Steven G. Kargl or
Copyright © 2003-2009 Bruce D. Evans or
Copyright © 2008 Stephen L. Moshier or
Copyright © 2017-2018 Arm Limited
and labelled as such in comments in the individual source files. All
have been licensed under extremely permissive terms.
------------------------------------------------------------------------------

Copyright notices are retained in src/* files where relevant.
```

#### dpi 0.1.2 (Apache-2.0 AND MIT), the MIT part (LICENSE-LIBM-MIT)

`LICENSE` is the bare Apache-2.0 text without a copyright line (winit workspace; authors: The winit contributors). `LICENSE-LIBM-MIT` covers the code derived from rust-lang/libm and is reproduced in full below.

```text
rust-lang/libm as a whole is available for use under the MIT license:

------------------------------------------------------------------------------
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.
------------------------------------------------------------------------------

This Rust library contains the following copyrights:

    Copyright (c) 2018 Jorge Aparicio

Portions of this software are derived from third-party works licensed under
terms compatible with the above MIT license:

* musl libc https://www.musl-libc.org/. This library contains the following
  copyright:

      Copyright © 2005-2020 Rich Felker, et al.

* The CORE-MATH project https://core-math.gitlabpages.inria.fr/. CORE-MATH
  routines are available under the MIT license on a per-file basis.

The musl libc COPYRIGHT file also includes the following notice relevant to
math portions of the library:

------------------------------------------------------------------------------
Much of the math library code (src/math/* and src/complex/*) is
Copyright © 1993,2004 Sun Microsystems or
Copyright © 2003-2011 David Schultz or
Copyright © 2003-2009 Steven G. Kargl or
Copyright © 2003-2009 Bruce D. Evans or
Copyright © 2008 Stephen L. Moshier or
Copyright © 2017-2018 Arm Limited
and labelled as such in comments in the individual source files. All
have been licensed under extremely permissive terms.
------------------------------------------------------------------------------
```

#### Apache License, Version 2.0

Applies to: **dpi 0.1.2** (Apache-2.0 AND MIT); **ring 0.17.14** (Apache-2.0 AND ISC); **winit 0.30.13** (Apache-2.0); and to the xi-unicode-derived code bundled in fontdue 0.9.4 (`licenses/xi-editor/xi-unicode`). None of these crates ships a NOTICE file. Attribution:

- **dpi 0.1.2**: Copyright (c) 2018 Jorge Aparicio; Copyright © 2005-2020 Rich Felker, et al.. `LICENSE` is the bare Apache-2.0 text without a copyright line (winit workspace; authors: The winit contributors). `LICENSE-LIBM-MIT` covers the code derived from rust-lang/libm and is reproduced in full below.
- **ring 0.17.14**: Copyright 2015-2025 Brian Smith.. Optional dependency of snow, enabled only as a side effect of snow's `std` feature (`ring/std`); QuadChroma does not enable snow's `ring-resolver`/`ring-accelerated` features, so no ring code is referenced. No ring symbols (Rust or C, prefix `ring_core_0_17_14_`) in the Mac client binary. All of ring's license files are reproduced in full below.
- **winit 0.30.13**: `license = "Apache-2.0"` (no MIT option). The LICENSE file is the bare Apache-2.0 text without a copyright line; authors per Cargo.toml: The winit contributors, Pierre Krieger <pierre.krieger1708@gmail.com>. No NOTICE file. The names of the `Key` and `KeyCode` variants and their documentation come from W3C specifications; the W3C Software and Document License and the W3C Short Notice that cover them are reproduced at the end of this section.

Text as shipped in `winit 0.30.13/LICENSE` (byte-identical to `dpi 0.1.2/LICENSE`):

```text
Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions
      to that Work or Derivative Works thereof, that is intentionally
      submitted to Licensor for inclusion in the Work by the copyright owner
      or by an individual or Legal Entity authorized to submit on behalf of
      the copyright owner. For the purposes of this definition, "submitted"
      means any form of electronic, verbal, or written communication sent
      to the Licensor or its representatives, including but not limited to
      communication on electronic mailing lists, source code control systems,
      and issue tracking systems that are managed by, or on behalf of, the
      Licensor for the purpose of discussing and improving the Work, but
      excluding communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a Contribution."

      "Contributor" shall mean Licensor and any individual or Legal Entity
      on behalf of whom a Contribution has been received by Licensor and
      subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      copyright license to reproduce, prepare Derivative Works of,
      publicly display, publicly perform, sublicense, and distribute the
      Work and such Derivative Works in Source or Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)
      with the Work to which such Contribution(s) was submitted. If You
      institute patent litigation against any entity (including a
      cross-claim or counterclaim in a lawsuit) alleging that the Work
      or a Contribution incorporated within the Work constitutes direct
      or contributory patent infringement, then any patent licenses
      granted to You under this License for that Work shall terminate
      as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed
          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,
          within a display generated by the Derivative Works, if and
          wherever such third-party notices normally appear. The contents
          of the NOTICE file are for informational purposes only and
          do not modify the License. You may add Your own attribution
          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions
      for use, reproduction, or distribution of Your modifications, or
      for any such Derivative Works as a whole, provided Your use,
      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.
      Notwithstanding the above, nothing herein shall supersede or modify
      the terms of any separate license agreement you may have executed
      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the
      origin of the Work and reproducing the content of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
      implied, including, without limitation, any warranties or conditions
      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
      PARTICULAR PURPOSE. You are solely responsible for determining the
      appropriateness of using or redistributing the Work and assume any
      risks associated with Your exercise of permissions under this License.

   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright {yyyy} {name of copyright owner}

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
```

#### BSD 3-Clause License

##### curve25519-dalek 4.1.3 (complete LICENSE file)

```text
Copyright (c) 2016-2021 isis agora lovecruft. All rights reserved.
Copyright (c) 2016-2021 Henry de Valence. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

========================================================================

Portions of curve25519-dalek were originally derived from Adam Langley's
Go ed25519 implementation, found at <https://github.com/agl/ed25519/>,
under the following licence:

========================================================================

Copyright (c) 2012 The Go Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

   * Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
   * Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
```

##### subtle 2.6.1 (complete LICENSE file)

```text
Copyright (c) 2016-2017 Isis Agora Lovecruft, Henry de Valence. All rights reserved.
Copyright (c) 2016-2024 Isis Agora Lovecruft. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
```

##### ed25519-dalek 2.2.0 (complete LICENSE file)

```text
Copyright (c) 2017-2019 isis agora lovecruft. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
```

#### ISC License

##### untrusted 0.9.0 (complete LICENSE.txt)

Only reached through ring (see ring). No untrusted symbols in the Mac client binary.

```text
// Copyright 2015-2016 Brian Smith.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
```

#### ring 0.17.14 (Apache-2.0 AND ISC), all license files complete

Optional dependency of snow, enabled only as a side effect of snow's `std` feature (`ring/std`); QuadChroma does not enable snow's `ring-resolver`/`ring-accelerated` features, so no ring code is referenced. No ring symbols (Rust or C, prefix `ring_core_0_17_14_`) in the Mac client binary. All of ring's license files are reproduced in full below.

Copyright holders named in ring's source headers (crypto/, src/, include/, third_party/): Brian Smith (2015-2025), The BoringSSL Authors, The OpenSSL Project Authors, Google Inc., Intel Corporation, the fiat-crypto authors; the file headers carry either the ISC text or the Apache-2.0 header.

##### ring/LICENSE

```text
*ring* uses an "ISC" license, like BoringSSL used to use, for new code
files. See LICENSE-other-bits for the text of that license.

See LICENSE-BoringSSL for code that was sourced from BoringSSL under the
Apache 2.0 license. Some code that was sourced from BoringSSL under the ISC
license. In each case, the license info is at the top of the file.

See src/polyfill/once_cell/LICENSE-APACHE and src/polyfill/once_cell/LICENSE-MIT
for the license to code that was sourced from the once_cell project.
```

##### ring/LICENSE-other-bits (ISC)

```text
Copyright 2015-2025 Brian Smith.

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
```

##### ring/LICENSE-BoringSSL (Apache-2.0 plus the support-code licenses it lists)

```text

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the
      editorial revisions, annotations, elaborations, or other modifications
      represent, as a whole, an original work of authorship. For the purposes
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   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.


Licenses for support code
-------------------------

Parts of the TLS test suite are under the Go license. This code is not included
in BoringSSL (i.e. libcrypto and libssl) when compiled, however, so
distributing code linked against BoringSSL does not trigger this license:

Copyright (c) 2009 The Go Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

   * Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
   * Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


BoringSSL uses the Chromium test infrastructure to run a continuous build,
trybots etc. The scripts which manage this, and the script for generating build
metadata, are under the Chromium license. Distributing code linked against
BoringSSL does not trigger this license.

Copyright 2015 The Chromium Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

   * Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
   * Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
```

##### ring/third_party/fiat/LICENSE (Apache-2.0)

```text
The Apache License, Version 2.0 (Apache-2.0)

Copyright 2015-2020 the fiat-crypto authors (see the AUTHORS file)

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
```

##### ring/src/polyfill/once_cell/LICENSE-MIT (code sourced from once_cell; MIT, own wording)

```text
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 AUTHOR 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.
```

#### Zlib License

##### foldhash 0.1.5 (complete LICENSE file)

```text
Copyright (c) 2024 Orson Peters

This software is provided 'as-is', without any express or implied warranty. In
no event will the authors be held liable for any damages arising from the use of
this software.

Permission is granted to anyone to use this software for any purpose, including
commercial applications, and to alter it and redistribute it freely, subject to
the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim
    that you wrote the original software. If you use this software in a product,
    an acknowledgment in the product documentation would be appreciated but is
    not required.

2. Altered source versions must be plainly marked as such, and must not be
    misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.
```

#### WTFPL (Do What The F*** You Want To Public License), Version 2

- **ffmpeg-next 9.0.0**: Authors per Cargo.toml: meh. <meh@schizofreni.co>, Zhiming Wang <i@zhimingwang.org>. Repository https://github.com/zmwangx/rust-ffmpeg.
- **ffmpeg-sys-next 9.0.0**: The crate ships no license file; `license = "WTFPL"` in Cargo.toml. Neither https://github.com/zmwangx/rust-ffmpeg-sys nor its origin https://github.com/meh/rust-ffmpeg-sys carries a license file (checked 2026-09-26). Authors per Cargo.toml: meh. <meh@schizofreni.co>, Zhiming Wang <i@zhimingwang.org>. The WTFPL text shipped with ffmpeg-next (same authors) applies.

Text as shipped in `ffmpeg-next 9.0.0/LICENSE`:

```text
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.
```

#### Community Data License Agreement - Permissive, Version 2.0 (webpki-root-certs 1.0.9)

`webpki-root-certs 1.0.9` contains Mozilla's trusted root certificates, derived from the data of the Common CA Database (CCADB). Its `LICENSE` file, reproduced in full:

```text
# Community Data License Agreement - Permissive - Version 2.0

This is the Community Data License Agreement - Permissive, Version
2.0 (the "agreement"). Data Provider(s) and Data Recipient(s) agree
as follows:

## 1. Provision of the Data

1.1. A Data Recipient may use, modify, and share the Data made
available by Data Provider(s) under this agreement if that Data
Recipient follows the terms of this agreement.

1.2. This agreement does not impose any restriction on a Data
Recipient's use, modification, or sharing of any portions of the
Data that are in the public domain or that may be used, modified,
or shared under any other legal exception or limitation.

## 2. Conditions for Sharing Data

2.1. A Data Recipient may share Data, with or without modifications, so
long as the Data Recipient makes available the text of this agreement
with the shared Data.

## 3. No Restrictions on Results

3.1. This agreement does not impose any restriction or obligations
with respect to the use, modification, or sharing of Results.

## 4. No Warranty; Limitation of Liability

4.1. All Data Recipients receive the Data subject to the following
terms:

THE DATA IS PROVIDED ON AN "AS IS" BASIS, WITHOUT REPRESENTATIONS,
WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED
INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE,
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

NO DATA PROVIDER SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING
WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE DATA OR RESULTS,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

## 5. Definitions

5.1. "Data" means the material received by a Data Recipient under
this agreement.

5.2. "Data Provider" means any person who is the source of Data
provided under this agreement and in reliance on a Data Recipient's
agreement to its terms.

5.3. "Data Recipient" means any person who receives Data directly
or indirectly from a Data Provider and agrees to the terms of this
agreement.

5.4. "Results" means any outcome obtained by computational analysis
of Data, including for example machine learning models and models'
insights.
```

#### W3C Software and Document License (winit 0.30.13, cursor-icon 1.2.0)

winit and cursor-icon contain material from W3C specifications: the names of winit's `Key` and `KeyCode` variants and their documentation (UI Events KeyboardEvent key and code Values) and the names of cursor-icon's `CursorIcon` variants and their documentation (CSS Basic User Interface Module Level 3). Both crates are compiled into QuadChroma (Windows and Mac). The W3C Software and Document License and the W3C Short Notice that apply to this material are reproduced below exactly as they appear in the crate sources, including the statements naming the W3C documents.

*`winit 0.30.13/src/keyboard.rs`, lines 3-70:*

```text
// This file contains a substantial portion of the UI Events Specification by the W3C. In
// particular, the variant names within `Key` and `KeyCode` and their documentation are modified
// versions of contents of the aforementioned specification.
//
// The original documents are:
//
// ### For `Key`
// UI Events KeyboardEvent key Values
// https://www.w3.org/TR/2017/CR-uievents-key-20170601/
// Copyright © 2017 W3C® (MIT, ERCIM, Keio, Beihang).
//
// ### For `KeyCode`
// UI Events KeyboardEvent code Values
// https://www.w3.org/TR/2017/CR-uievents-code-20170601/
// Copyright © 2017 W3C® (MIT, ERCIM, Keio, Beihang).
//
// These documents were used under the terms of the following license. This W3C license as well as
// the W3C short notice apply to the `Key` and `KeyCode` enums and their variants and the
// documentation attached to their variants.

// --------- BEGINNING OF W3C LICENSE --------------------------------------------------------------
//
// License
//
// By obtaining and/or copying this work, you (the licensee) agree that you have read, understood,
// and will comply with the following terms and conditions.
//
// Permission to copy, modify, and distribute this work, with or without modification, for any
// purpose and without fee or royalty is hereby granted, provided that you include the following on
// ALL copies of the work or portions thereof, including modifications:
//
// - The full text of this NOTICE in a location viewable to users of the redistributed or derivative
//   work.
// - Any pre-existing intellectual property disclaimers, notices, or terms and conditions. If none
//   exist, the W3C Software and Document Short Notice should be included.
// - Notice of any changes or modifications, through a copyright statement on the new code or
//   document such as "This software or document includes material copied from or derived from
//   [title and URI of the W3C document]. Copyright © [YEAR] W3C® (MIT, ERCIM, Keio, Beihang)."
//
// Disclaimers
//
// THIS WORK IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
// ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE OR DOCUMENT WILL NOT INFRINGE ANY THIRD
// PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
//
// COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENT.
//
// The name and trademarks of copyright holders may NOT be used in advertising or publicity
// pertaining to the work without specific, written prior permission. Title to copyright in this
// work will at all times remain with copyright holders.
//
// --------- END OF W3C LICENSE --------------------------------------------------------------------

// --------- BEGINNING OF W3C SHORT NOTICE ---------------------------------------------------------
//
// winit: https://github.com/rust-windowing/winit
//
// Copyright © 2021 World Wide Web Consortium, (Massachusetts Institute of Technology, European
// Research Consortium for Informatics and Mathematics, Keio University, Beihang). All Rights
// Reserved. This work is distributed under the W3C® Software License [1] in the hope that it will
// be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// [1] http://www.w3.org/Consortium/Legal/copyright-software
//
// --------- END OF W3C SHORT NOTICE ---------------------------------------------------------------
```

*`cursor-icon 1.2.0/src/lib.rs`, lines 34-102:*

```text
// This file contains a portion of the CSS Basic User Interface Module Level 3
// specification. In particular, the names for the cursor from the #cursor
// section and documentation for some of the variants were taken.
//
// The original document is https://www.w3.org/TR/css-ui-3/#cursor.
// Copyright © 2018 W3C® (MIT, ERCIM, Keio, Beihang)
//
// These documents were used under the terms of the following license. This W3C
// license as well as the W3C short notice apply to the `CursorIcon` enum's
// variants and documentation attached to them.

// --------- BEGINNING OF W3C LICENSE
// --------------------------------------------------------------
//
// License
//
// By obtaining and/or copying this work, you (the licensee) agree that you have
// read, understood, and will comply with the following terms and conditions.
//
// Permission to copy, modify, and distribute this work, with or without
// modification, for any purpose and without fee or royalty is hereby granted,
// provided that you include the following on ALL copies of the work or portions
// thereof, including modifications:
//
// - The full text of this NOTICE in a location viewable to users of the
//   redistributed or derivative work.
// - Any pre-existing intellectual property disclaimers, notices, or terms and
//   conditions. If none exist, the W3C Software and Document Short Notice
//   should be included.
// - Notice of any changes or modifications, through a copyright statement on
//   the new code or document such as "This software or document includes
//   material copied from or derived from [title and URI of the W3C document].
//   Copyright © [YEAR] W3C® (MIT, ERCIM, Keio, Beihang)."
//
// Disclaimers
//
// THIS WORK IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS
// OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, WARRANTIES
// OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF
// THE SOFTWARE OR DOCUMENT WILL NOT INFRINGE ANY THIRD PARTY PATENTS,
// COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
//
// COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR
// CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENT.
//
// The name and trademarks of copyright holders may NOT be used in advertising
// or publicity pertaining to the work without specific, written prior
// permission. Title to copyright in this work will at all times remain with
// copyright holders.
//
// --------- END OF W3C LICENSE
// --------------------------------------------------------------------

// --------- BEGINNING OF W3C SHORT NOTICE
// ---------------------------------------------------------
//
// winit: https://github.com/rust-windowing/cursor-icon
//
// Copyright © 2023 World Wide Web Consortium, (Massachusetts Institute of
// Technology, European Research Consortium for Informatics and Mathematics,
// Keio University, Beihang). All Rights Reserved. This work is distributed
// under the W3C® Software License [1] in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// [1] http://www.w3.org/Consortium/Legal/copyright-software
//
// --------- END OF W3C SHORT NOTICE
// --------------------------------------------------------------
```

### 3.5 Build-time only (not linked)

These crates are procedural macros (`[lib] proc-macro = true` in their Cargo.toml) or are reached only through procedural macros (`cargo tree -i`). They run inside the compiler while building QuadChroma and no code of theirs ends up in the program (0 symbols for syn, quote, proc-macro2 and unicode-ident in the Mac client binary). Their licenses are listed here for completeness.

- **curve25519-dalek-derive 0.1.1** (proc-macro): `license = "MIT/Apache-2.0"`, applied MIT. (no copyright line; dalek-cryptography contributors) Note: The crate's MIT license file carries no copyright line. Repository https://github.com/dalek-cryptography/curve25519-dalek (no `authors` field). Only pulled on x86_64 targets (curve25519-dalek's AVX2 backend).
- **proc-macro2 1.0.107** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay, Alex Crichton) Note: The crate's MIT license file carries no copyright line. Authors per Cargo.toml: David Tolnay <dtolnay@gmail.com>, Alex Crichton <alex@alexcrichton.com>.
- **quote 1.0.47** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay) Note: The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **serde_derive 1.0.229** (proc-macro): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; Erick Tryzelaar, David Tolnay) Note: The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Erick Tryzelaar <erick.tryzelaar@gmail.com>, David Tolnay <dtolnay@gmail.com>.
- **syn 2.0.119** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay) Note: The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **syn 3.0.6** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay) Note: The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **unicode-ident 1.0.26** (dependency of proc-macro crates only): `license = "(MIT OR Apache-2.0) AND Unicode-3.0"`, applied MIT AND Unicode-3.0. Copyright © 1991-2023 Unicode, Inc. Note: `license = "(MIT OR Apache-2.0) AND Unicode-3.0"`; MIT chosen for the code, Unicode-3.0 applies to the embedded Unicode data. The MIT file carries no copyright line; author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **windows-implement 0.60.2** (proc-macro): `license = "MIT OR Apache-2.0"`, applied MIT. Copyright (c) Microsoft Corporation.
- **windows-interface 0.59.3** (proc-macro): `license = "MIT OR Apache-2.0"`, applied MIT. Copyright (c) Microsoft Corporation.

#### Unicode License v3 (unicode-ident 1.0.26, LICENSE-UNICODE, complete)

```text
UNICODE LICENSE V3

COPYRIGHT AND PERMISSION NOTICE

Copyright © 1991-2023 Unicode, Inc.

NOTICE TO USER: Carefully read the following legal agreement. BY
DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING DATA FILES, AND/OR
SOFTWARE, YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
TERMS AND CONDITIONS OF THIS AGREEMENT. IF YOU DO NOT AGREE, DO NOT
DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE THE DATA FILES OR SOFTWARE.

Permission is hereby granted, free of charge, to any person obtaining a
copy of data files and any associated documentation (the "Data Files") or
software and any associated documentation (the "Software") to deal in the
Data Files or Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, and/or sell
copies of the Data Files or Software, and to permit persons to whom the
Data Files or Software are furnished to do so, provided that either (a)
this copyright and permission notice appear with all copies of the Data
Files or Software, or (b) this copyright and permission notice appear in
associated Documentation.

THE DATA FILES AND SOFTWARE ARE 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 OF
THIRD PARTY RIGHTS.

IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE
BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES,
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA
FILES OR SOFTWARE.

Except as contained in this notice, the name of a copyright holder shall
not be used in advertising or otherwise to promote the sale, use or other
dealings in these Data Files or Software without prior written
authorization of the copyright holder.
```

The MIT License (Microsoft wording, see above) applies to windows-implement 0.60.2, windows-interface 0.59.3.

The MIT License (standard text, see above) applies to curve25519-dalek-derive 0.1.1, proc-macro2 1.0.107, quote 1.0.47, syn 2.0.119, unicode-ident 1.0.26.

### 3.6 Rust standard library

Every Rust program contains the Rust standard library (`std`, `core`, `alloc`, `compiler_builtins` and the crates the standard library bundles). `quadchroma.exe` and the executable of `QuadChroma.app` were built with Rust 1.98.1. The Rust project is dual-licensed under the Apache License 2.0 (Appendix C) and the MIT license; the MIT license is applied. Source: <https://github.com/rust-lang/rust/tree/1.98.1>. Its `COPYRIGHT` file explains how the licenses of third-party material inside the standard library are tracked (`COPYRIGHT-library.html` in every binary release of Rust).

*File `LICENSE-MIT` (Rust 1.98.1) (source: <https://raw.githubusercontent.com/rust-lang/rust/1.98.1/LICENSE-MIT>):*

```text
Copyright (c) The Rust Project Contributors

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.
```

*File `COPYRIGHT` (Rust 1.98.1) (source: <https://raw.githubusercontent.com/rust-lang/rust/1.98.1/COPYRIGHT>):*

```text
Short version for non-lawyers:

The Rust Project is dual-licensed under Apache 2.0 and MIT
terms.

It is Copyright (c) The Rust Project Contributors.

Longer version:

Copyrights in the Rust project are retained by their contributors. No
copyright assignment is required to contribute to the Rust project.

Some files include explicit copyright notices and/or license notices.
For full authorship information, see the version control history or
<https://thanks.rust-lang.org>

Except as otherwise noted, Rust is licensed under the Apache License, Version
2.0 <LICENSE-APACHE> or <http://www.apache.org/licenses/LICENSE-2.0> or the MIT
license <LICENSE-MIT> or <http://opensource.org/licenses/MIT>, at your option.

We track licenses for third-party materials in two ways:

* We use [REUSE](https://reuse.software) to track license information for
  in-tree source files - both those authored by the Rust project and those
  authored by third parties. See `REUSE.toml`, and our cached output of the
  `reuse` tool which is committed to `license-metadata.json`.
* We use `cargo` to track license information for out-of-tree dependencies.

These two sources of information are collected by the tool `generate-copyright`
into a file called `COPYRIGHT.html`, which is shipped with each binary release
of Rust. Please refer to that file for detailed information as to the components of
any given Rust release. We also produce a `COPYRIGHT-library.html` file which only
covers the subset of source code used in the Rust Standard Library, as opposed
to the toolchain as a whole.
```

**Crates bundled with the standard library.** The standard library of Rust 1.98.1 contains the following crates from crates.io. The versions are those recorded in the standard-library files of the Rust 1.98.1 toolchain for each target; the crate paths of rustc-demangle and hashbrown are found in both shipped executables, those of addr2line, gimli and object in the Mac executable; miniz_oxide and adler2 belong to the backtrace support of the Mac standard library; cfg-if (both targets), libc and memchr (Mac) are further crates of the standard library, listed although their crate paths do not appear in the shipped executables. `windows_link` in the Windows standard library is an in-tree crate of the Rust repository (`library/windows_link`), not the crates.io crate windows-link, and is covered by the Rust license above. The copyright lines are quoted from the license files of exactly these versions as reproduced in `share/doc/rust/COPYRIGHT.html` of the Rust 1.98.1 toolchain (`COPYRIGHT-library.html` does not list addr2line, object, miniz_oxide, adler2 and memchr 2.7.6). For each crate the MIT license is applied and the standard MIT text of section 3.4 applies; miniz_oxide's own MIT file is reproduced below because it carries four copyright lines.

| Crate | Version | `license` field | Applied | Copyright / attribution | Target |
|---|---|---|---|---|---|
| rustc-demangle | 0.1.27 | MIT/Apache-2.0 | MIT | Copyright (c) 2014 Alex Crichton | Windows and Mac |
| hashbrown | 0.17.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016 Amanieu d'Antras | Windows and Mac |
| addr2line | 0.25.1 | Apache-2.0 OR MIT | MIT | Copyright (c) 2016-2018 The gimli Developers | Mac |
| gimli | 0.32.3 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 The Rust Project Developers | Mac |
| object | 0.37.3 | Apache-2.0 OR MIT | MIT | Copyright (c) 2015 The Gimli Developers | Mac |
| miniz_oxide | 0.8.9 | MIT OR Zlib OR Apache-2.0 | MIT | Copyright 2013-2014 RAD Game Tools and Valve Software; Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC; Copyright (c) 2017 Frommi; Copyright (c) 2017-2024 oyvindln | Mac |
| adler2 | 2.0.1 | 0BSD OR MIT OR Apache-2.0 | MIT | (no copyright line; Jonas Schievink, oyvindln) | Mac |
| cfg-if | 1.0.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 Alex Crichton | Windows and Mac |
| libc | 0.2.185 | MIT OR Apache-2.0 | MIT | Copyright (c) The Rust Project Developers | Mac |
| memchr | 2.7.6 | Unlicense OR MIT | MIT | Copyright (c) 2015 Andrew Gallant | Mac |

adler2's MIT license file carries no copyright line; authors per its Cargo.toml: Jonas Schievink <jonasschievink@gmail.com>, oyvindln <oyvindln@users.noreply.github.com>.

*File `LICENSE-MIT.md` of miniz_oxide 0.8.9, complete:*

```text
MIT License

Copyright 2013-2014 RAD Game Tools and Valve Software
Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
Copyright (c) 2017 Frommi
Copyright (c) 2017-2024 oyvindln

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.
```

**Unicode tables and other notices inside the standard library.** The Unicode tables in `core` (`library/core/src/unicode`, for example for `char::is_alphanumeric`) are under the Unicode License v3 (Copyright 1991-2024 Unicode, Inc, according to `COPYRIGHT-library.html` of Rust 1.98.1); the complete text of that license with this copyright line is reproduced below (section 3.5 reproduces the same license for unicode-ident, which is not linked, with its own copyright line 1991-2023). The same file names Copyright 2014 Alex Crichton for `library/backtrace` and Copyright 2019 The Crossbeam Project Developers for `library/std/src/sync/mpmc` (both Apache-2.0 OR MIT, MIT applied).

*File `share/doc/rust/licenses/Unicode-3.0.txt` of the Rust 1.98.1 toolchain, complete:*

```text
UNICODE LICENSE V3

COPYRIGHT AND PERMISSION NOTICE

Copyright © 1991-2024 Unicode, Inc.

NOTICE TO USER: Carefully read the following legal agreement. BY
DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING DATA FILES, AND/OR
SOFTWARE, YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
TERMS AND CONDITIONS OF THIS AGREEMENT. IF YOU DO NOT AGREE, DO NOT
DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE THE DATA FILES OR SOFTWARE.

Permission is hereby granted, free of charge, to any person obtaining a
copy of data files and any associated documentation (the "Data Files") or
software and any associated documentation (the "Software") to deal in the
Data Files or Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, and/or sell
copies of the Data Files or Software, and to permit persons to whom the
Data Files or Software are furnished to do so, provided that either (a)
this copyright and permission notice appear with all copies of the Data
Files or Software, or (b) this copyright and permission notice appear in
associated Documentation.

THE DATA FILES AND SOFTWARE ARE 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 OF
THIRD PARTY RIGHTS.

IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE
BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES,
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA
FILES OR SOFTWARE.

Except as contained in this notice, the name of a copyright holder shall
not be used in advertising or otherwise to promote the sale, use or other
dealings in these Data Files or Software without prior written
authorization of the copyright holder.
```

### 3.7 Microsoft Visual C++ runtime (static)

`client/.cargo/config.toml` sets `-C target-feature=+crt-static`, so the Microsoft C runtime (libcmt, libvcruntime, libucrt) is linked statically into `quadchroma.exe` and no `VCRUNTIME140.dll` is imported. This runtime is Microsoft code distributed with Visual Studio and the Windows SDK under Microsoft's license terms ("Distributable Code"); it is not open-source software, is not part of the Corresponding Source of anything, and no third-party notice text is reproduced for it. Beyond that the executable imports only Windows system DLLs. Fonts are loaded from the system at run time (for example `C:\Windows\Fonts\meiryo.ttc`); nothing is embedded.

### 3.8 NVIDIA NVAPI declarations

The optional Windows NVENC performance request uses locally written Rust FFI
bindings for declarations and constants from NVIDIA NVAPI, revision `70d337db9186e968eab622f7e786de7e437faf3d`.
The NVIDIA driver library (`nvapi64.dll`, or `nvapi.dll` for a 32-bit process)
is loaded from the installed graphics driver at runtime and is not distributed
with QuadChroma. The following MIT notice covers the referenced SDK declarations;
it does not license the separately installed driver.

Source: <https://raw.githubusercontent.com/NVIDIA/nvapi/70d337db9186e968eab622f7e786de7e437faf3d/nvapi.h>

```
Copyright (c) 2019-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.

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.
```

## 4. macOS app (QuadChroma.app): host engine and system parts

The app's executable is the Rust client (section 5). Built into it is the host engine: QuadChroma's own Objective-C and C code and the vendored cryptographic library Monocypher (4.1). It links only Apple system frameworks (4.2). It contains no FFmpeg.

### 4.1 Monocypher

- **Version:** 4.0.3 plus one later upstream change. The vendored files `host/vendor/monocypher/monocypher.h` and `monocypher.c` say `Monocypher version __git__` (taken from the git tree, where the release script substitutes the version). Compared with the release files of <https://github.com/LoupVaillant/Monocypher> (tags 4.0.0 to 4.0.3, `src/monocypher.h` and `src/monocypher.c`): `monocypher.c` is release 4.0.3 (identical apart from the version line); `monocypher.h` is release 4.0.3 plus the later upstream correction of the closing of the optional C++ namespace block (lines 317-319), otherwise identical apart from the version line. Release 4.0.3 was published on 15 June 2026 (<https://github.com/LoupVaillant/Monocypher/releases/tag/4.0.3>).
- **License:** BSD-2-Clause OR CC0-1.0 (`SPDX-License-Identifier: BSD-2-Clause OR CC0-1.0` in both files)
- **Applied:** BSD-2-Clause
- **Copyright:** Copyright (c) 2017-2019, Loup Vaillant (`monocypher.h`); Copyright (c) 2017-2020, Loup Vaillant (`monocypher.c`)
- **Used for:** X25519, ChaCha20 and Poly1305 in the host's Noise handshake and transport (`host/qc_noise.c`); SHA-256 and HMAC come from Apple's CommonCrypto.
- **Source:** <https://monocypher.org>, <https://github.com/LoupVaillant/Monocypher>

*License header of `host/vendor/monocypher/monocypher.h` (identical to the upstream file except for the version line):*

```text
// Monocypher version __git__
//
// This file is dual-licensed.  Choose whichever licence you want from
// the two licences listed below.
//
// The first licence is a regular 2-clause BSD licence.  The second licence
// is the CC-0 from Creative Commons. It is intended to release Monocypher
// to the public domain.  The BSD licence serves as a fallback option.
//
// SPDX-License-Identifier: BSD-2-Clause OR CC0-1.0
//
// ------------------------------------------------------------------------
//
// Copyright (c) 2017-2019, Loup Vaillant
// All rights reserved.
//
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the
//    distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ------------------------------------------------------------------------
//
// Written in 2017-2019 by Loup Vaillant
//
// To the extent possible under law, the author(s) have dedicated all copyright
// and related neighboring rights to this software to the public domain
// worldwide.  This software is distributed without any warranty.
//
// You should have received a copy of the CC0 Public Domain Dedication along
// with this software.  If not, see
// <https://creativecommons.org/publicdomain/zero/1.0/>
```

*License header of `host/vendor/monocypher/monocypher.c`:*

```text
// Monocypher version __git__
//
// This file is dual-licensed.  Choose whichever licence you want from
// the two licences listed below.
//
// The first licence is a regular 2-clause BSD licence.  The second licence
// is the CC-0 from Creative Commons. It is intended to release Monocypher
// to the public domain.  The BSD licence serves as a fallback option.
//
// SPDX-License-Identifier: BSD-2-Clause OR CC0-1.0
//
// ------------------------------------------------------------------------
//
// Copyright (c) 2017-2020, Loup Vaillant
// All rights reserved.
//
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the
//    distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ------------------------------------------------------------------------
//
// Written in 2017-2020 by Loup Vaillant
//
// To the extent possible under law, the author(s) have dedicated all copyright
// and related neighboring rights to this software to the public domain
// worldwide.  This software is distributed without any warranty.
//
// You should have received a copy of the CC0 Public Domain Dedication along
// with this software.  If not, see
// <https://creativecommons.org/publicdomain/zero/1.0/>
```

### 4.2 Apple frameworks

`QuadChroma.app` links Foundation, AppKit, ScreenCaptureKit, VideoToolbox, CoreMedia, CoreVideo, CoreGraphics, CoreFoundation, IOKit, ServiceManagement, SystemConfiguration, AudioToolbox, CoreAudio, Metal, QuartzCore, ApplicationServices, Carbon, libobjc, libiconv and CommonCrypto (via libSystem). They are part of macOS (minimum version 14.0), are not distributed with QuadChroma and require no third-party notice. The bundle is code-signed; the signature adds no third-party content.

From clang's builtins library (`libclang_rt.osx.a`, LLVM compiler-rt) the executable contains the function `__isPlatformVersionAtLeast`, which clang uses for `@available` checks - the same code clang puts into every program it links itself. compiler-rt is under Apache-2.0 WITH LLVM-exception; the LLVM exception exempts such portions embedded in an object form by compiling from the conditions of sections 4(a), 4(b) and 4(d) of the Apache License, so no notice is required; it is named here for completeness.

## 5. Rust crates in the macOS app (Mac client)

The Mac client is built from the same Rust source as the Windows binary and is the executable of `QuadChroma.app` (section 4). It decodes with Apple's VideoToolbox and displays through Metal, QuartzCore and CoreVideo (system frameworks, section 4.2) and contains no FFmpeg.

This section lists the crates of the `aarch64-apple-darwin` target with their licenses and copyright lines and reproduces the texts that differ from section 3. Everything else - the standard MIT text, the Microsoft MIT wording, the complete libm and dpi texts, the Apache License 2.0 as shipped by winit, the BSD-3-Clause texts of curve25519-dalek and subtle, the ISC and Apache texts of untrusted and ring, the Zlib text of foldhash and the Unicode License v3 - is identical to section 3 (same crate versions).

### 5.1 Scope and method

- Source of truth: `client/Cargo.lock` as released with 1.0 and `cargo tree --target aarch64-apple-darwin -e normal` (normal dependency edges only). `ffmpeg-next` and `ffmpeg-sys-next` are Windows-only dependencies (the Mac client decodes with VideoToolbox) and do not resolve for this target. The build-dependencies (`cargo tree -e build`; for this target cc, cfg_aliases, find-msvc-tools, rustc_version, semver, shlex and version_check) run only in build scripts while the program is built and put no code into it, so they are not listed; the crate has no dev-dependencies.

- 108 crates resolve for this target: 102 are compiled into the binary (or resolved as dependencies), 6 run only at build time (procedural macros and crates reached only through procedural macros). Build-time crates are listed in the last section. The crates added in 1.0 are checked as described in section 3.1; on the Mac `ureq` uses `native-tls` with Apple's Security framework (`security-framework`, `core-foundation 0.10.1`, `tempfile` and its dependencies).

- License choice: for `MIT OR Apache-2.0` (and any other choice that includes MIT) the MIT license is applied; Apache-2.0-only crates under Apache-2.0; `AND` expressions under all named licenses. Every copyright line below is quoted verbatim from the license file shipped in the crate (Cargo registry cache); where a crate ships no license file or no copyright line, the note says where the attribution comes from.

- NOTICE files: none of the crates listed here ships a NOTICE file (checked in the registry sources of every crate), so no Apache-2.0 NOTICE content has to be reproduced.

- Linking evidence: the symbol counts of the Mac app given in section 3.1 (a release build of QuadChroma 1.0): winit 494, snow 87, fontdue 28, curve25519-dalek 30, chacha20poly1305 2, sha2 4; ring 0, untrusted 0, blake2 0, syn 0, quote 0, proc-macro2 0, unicode-ident 0, libloading 0; C symbols with prefix `ring_core_0_17_14_`: 0.

### 5.2 Summary table

| Crate | Version | `license` field | Applied | Copyright / attribution | Status |
|---|---|---|---|---|---|
| aead | 0.5.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The RustCrypto Project Developers; Copyright (c) 2019 MobileCoin, LLC | linked |
| allocator-api2 | 0.2.21 | MIT OR Apache-2.0 | MIT | (no copyright line; Zakarum) | linked |
| base64 | 0.23.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2025 Alice Maz, Marshall Pierce | linked |
| base64ct | 1.8.3 | Apache-2.0 OR MIT | MIT | Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com); Copyright (c) 2021-2025 The RustCrypto Project Developers | linked |
| bitflags | 1.3.2 | MIT/Apache-2.0 | MIT | Copyright (c) 2014 The Rust Project Developers | linked |
| bitflags | 2.13.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 The Rust Project Developers | linked |
| blake2 | 0.10.6 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015-2016 The blake2-rfc Developers, Cesar Barros; Copyright (c) 2017 Artyom Pavlov | resolved, not linked |
| block-buffer | 0.10.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2019 The RustCrypto Project Developers | linked |
| block2 | 0.5.1 | MIT | MIT | Copyright (c) Steven Sheldon | linked |
| bytes | 1.12.1 | MIT | MIT | Copyright (c) 2018 Carl Lerche | linked |
| cfg-if | 1.0.5 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 Alex Crichton | linked |
| chacha20 | 0.9.1 | Apache-2.0 OR MIT | MIT | Copyright (c) 2019-2023 The RustCrypto Project Developers | linked |
| chacha20poly1305 | 0.10.1 | Apache-2.0 OR MIT | MIT | Copyright (c) 2019 The RustCrypto Project Developers | linked |
| cipher | 0.4.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016-2020 RustCrypto Developers | linked |
| core-foundation | 0.10.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2012-2013 Mozilla Foundation | linked |
| core-foundation | 0.9.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2012-2013 Mozilla Foundation | linked |
| core-foundation-sys | 0.8.7 | MIT OR Apache-2.0 | MIT | Copyright (c) 2012-2013 Mozilla Foundation | linked |
| core-graphics | 0.23.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2012-2013 Mozilla Foundation | linked |
| core-graphics-types | 0.1.3 | MIT OR Apache-2.0 | MIT | Copyright (c) 2012-2013 Mozilla Foundation | linked |
| core_maths | 0.1.1 | MIT | MIT | Copyright (c) 2024 Robert Bastian | linked |
| cpufeatures | 0.2.17 | MIT OR Apache-2.0 | MIT | Copyright (c) 2020-2025 The RustCrypto Project Developers | linked |
| crossbeam-deque | 0.8.8 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The Crossbeam Project Developers | linked |
| crossbeam-epoch | 0.9.21 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The Crossbeam Project Developers | linked |
| crossbeam-utils | 0.8.23 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 The Crossbeam Project Developers | linked |
| crypto-common | 0.1.7 | MIT OR Apache-2.0 | MIT | Copyright (c) 2021 RustCrypto Developers | linked |
| cursor-icon | 1.2.0 | MIT OR Apache-2.0 OR Zlib | MIT | Copyright (c) 2023 Kirill Chibisov; the `CursorIcon` names come from a W3C specification under the W3C Software and Document License (3.4) | linked |
| curve25519-dalek | 4.1.3 | BSD-3-Clause | BSD-3-Clause | Copyright (c) 2016-2021 isis agora lovecruft. All rights reserved.; Copyright (c) 2016-2021 Henry de Valence. All rights reserved.; Copyright (c) 2012 The Go Authors. All rights reserved. | linked |
| der | 0.8.2 | Apache-2.0 OR MIT | MIT | Copyright (c) 2020-2026 The RustCrypto Project Developers; datetime code adapted from humantime, Copyright (c) 2016 The humantime Developers | linked |
| digest | 0.10.7 | MIT OR Apache-2.0 | MIT | Copyright (c) 2017 Artyom Pavlov | linked |
| dispatch | 0.2.0 | MIT | MIT | (no copyright line; Steven Sheldon) | linked |
| dpi | 0.1.2 | Apache-2.0 AND MIT | Apache-2.0 AND MIT | Copyright (c) 2018 Jorge Aparicio; Copyright © 2005-2020 Rich Felker, et al. | linked |
| ed25519 | 2.2.3 | Apache-2.0 OR MIT | MIT | Copyright (c) 2018-2023 RustCrypto Developers | linked |
| ed25519-dalek | 2.2.0 | BSD-3-Clause | BSD-3-Clause | Copyright (c) 2017-2019 isis agora lovecruft. All rights reserved. | linked |
| either | 1.18.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 | linked |
| equivalent | 1.0.2 | Apache-2.0 OR MIT | MIT | Copyright (c) 2016--2023 | linked |
| errno | 0.3.14 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 Chris Wong | linked |
| fastrand | 2.5.0 | Apache-2.0 OR MIT | MIT | (no copyright line; Stjepan Glavina) | linked |
| foldhash | 0.1.5 | Zlib | Zlib | Copyright (c) 2024 Orson Peters | linked |
| fontdue | 0.9.4 | MIT OR Apache-2.0 OR Zlib | MIT | Copyright (c) 2019 Joe C (mooman219) | linked |
| foreign-types | 0.5.0 | MIT/Apache-2.0 | MIT | Copyright (c) 2017 The foreign-types Developers | linked |
| foreign-types-macros | 0.2.4 | MIT/Apache-2.0 | MIT | Copyright (c) 2017 The foreign-types Developers | build-time only (proc-macro) |
| foreign-types-shared | 0.3.1 | MIT/Apache-2.0 | MIT | Copyright (c) 2017 The foreign-types Developers | linked |
| generic-array | 0.14.7 | MIT | MIT | Copyright (c) 2015 Bartłomiej Kamiński | linked |
| getrandom | 0.2.17 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2024 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers | linked |
| getrandom | 0.3.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2025 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers | linked |
| getrandom | 0.4.3 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2026 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers | linked |
| hashbrown | 0.15.5 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016 Amanieu d'Antras | linked |
| http | 1.5.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2017 http-rs authors | linked |
| httparse | 1.10.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015-2025 Sean McArthur | linked |
| inout | 0.1.4 | MIT OR Apache-2.0 | MIT | Copyright (c) 2022 The RustCrypto Project Developers; Copyright (c) 2022 Artyom Pavlov | linked |
| itoa | 1.0.18 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | linked |
| libc | 0.2.189 | MIT OR Apache-2.0 | MIT | Copyright (c) The Rust Project Developers | linked |
| libm | 0.2.16 | MIT | MIT | Copyright (c) 2018 Jorge Aparicio; Copyright © 2005-2020 Rich Felker, et al. | linked |
| log | 0.4.34 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 The Rust Project Developers | linked |
| memchr | 2.8.3 | Unlicense OR MIT | MIT | Copyright (c) 2015 Andrew Gallant | linked |
| native-tls | 0.2.18 | MIT OR Apache-2.0 | MIT | Copyright (c) 2016 The rust-native-tls Developers | linked |
| objc-sys | 0.3.5 | MIT | MIT | Copyright (c) Steven Sheldon | linked |
| objc2 | 0.5.2 | MIT | MIT | Copyright (c) Steven Sheldon | linked |
| objc2 | 0.6.4 | MIT | MIT | (no copyright line; Mads Marquart) | linked |
| objc2-app-kit | 0.2.2 | MIT | MIT | Copyright (c) Steven Sheldon | linked |
| objc2-core-foundation | 0.3.2 | Zlib OR Apache-2.0 OR MIT | MIT | (no copyright line; Mads Marquart (objc2 project)) | linked |
| objc2-core-graphics | 0.3.2 | Zlib OR Apache-2.0 OR MIT | MIT | (no copyright line; Mads Marquart (objc2 project)) | linked |
| objc2-encode | 4.1.0 | MIT | MIT | (no copyright line; Mads Marquart) | linked |
| objc2-foundation | 0.2.2 | MIT | MIT | Copyright (c) Steven Sheldon | linked |
| objc2-foundation | 0.3.2 | MIT | MIT | (no copyright line; Mads Marquart (objc2 project)) | linked |
| objc2-quartz-core | 0.3.2 | Zlib OR Apache-2.0 OR MIT | MIT | (no copyright line; Mads Marquart (objc2 project)) | linked |
| once_cell | 1.21.4 | MIT OR Apache-2.0 | MIT | (no copyright line; Aleksey Kladov) | linked |
| opaque-debug | 0.3.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018-2024 The RustCrypto Project Developers | linked |
| pem-rfc7468 | 1.0.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2021-2025 The RustCrypto Project Developers | linked |
| percent-encoding | 2.3.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2013-2025 The rust-url developers | linked |
| pin-project-lite | 0.2.17 | Apache-2.0 OR MIT | MIT | (no copyright line; taiki-e (Taiki Endo)) | linked |
| poly1305 | 0.8.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2015-2019 RustCrypto Developers | linked |
| proc-macro2 | 1.0.107 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay, Alex Crichton) | build-time only (dependency of proc-macro crates only) |
| quote | 1.0.47 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | build-time only (dependency of proc-macro crates only) |
| raw-window-handle | 0.6.2 | MIT OR Apache-2.0 OR Zlib | MIT | Copyright (c) 2019 Osspial | linked |
| rayon | 1.12.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2010 The Rust Project Developers | linked |
| rayon-core | 1.13.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2010 The Rust Project Developers | linked |
| ring | 0.17.14 | Apache-2.0 AND ISC | Apache-2.0 AND ISC | Copyright 2015-2025 Brian Smith. | resolved, not linked |
| rustix | 1.1.5 | Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT | MIT | (no copyright line; Dan Gohman, Jakub Konka) | linked |
| rustls-pki-types | 1.15.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2023 Dirkjan Ochtman <dirkjan@ochtman.nl> | linked |
| security-framework | 3.7.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 Steven Fackler | linked |
| security-framework-sys | 2.17.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 Steven Fackler | linked |
| serde | 1.0.229 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay) | linked |
| serde_core | 1.0.229 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay) | linked |
| serde_derive | 1.0.229 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay) | build-time only (proc-macro) |
| serde_json | 1.0.151 | MIT OR Apache-2.0 | MIT | (no copyright line; Erick Tryzelaar, David Tolnay); includes code from lexical, copyright Alexander Huszagh (3.4) | linked |
| sha2 | 0.10.9 | MIT OR Apache-2.0 | MIT | Copyright (c) 2006-2009 Graydon Hoare; Copyright (c) 2009-2013 Mozilla Foundation; Copyright (c) 2016 Artyom Pavlov | linked |
| signature | 2.2.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2018-2023 RustCrypto Developers | linked |
| smol_str | 0.2.2 | MIT OR Apache-2.0 | MIT | (no copyright line; Aleksey Kladov) | linked |
| snow | 0.10.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2021 Jake McGinty | linked |
| softbuffer | 0.4.8 | MIT OR Apache-2.0 | MIT | Copyright 2022 Kirill Chibisov | linked |
| subtle | 2.6.1 | BSD-3-Clause | BSD-3-Clause | Copyright (c) 2016-2017 Isis Agora Lovecruft, Henry de Valence. All rights reserved.; Copyright (c) 2016-2024 Isis Agora Lovecruft. All rights reserved. | linked |
| syn | 3.0.6 | MIT OR Apache-2.0 | MIT | (no copyright line; David Tolnay) | build-time only (dependency of proc-macro crates only) |
| tempfile | 3.27.0 | MIT OR Apache-2.0 | MIT | Copyright (c) 2015 Steven Allen | linked |
| tracing | 0.1.44 | MIT | MIT | Copyright (c) 2019 Tokio Contributors | linked |
| tracing-core | 0.1.36 | MIT | MIT | Copyright (c) 2019 Tokio Contributors | linked |
| ttf-parser | 0.25.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2018 Yevhenii Reizner | linked |
| typenum | 1.20.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2014 Paho Lurie-Gregg | linked |
| unicode-ident | 1.0.26 | (MIT OR Apache-2.0) AND Unicode-3.0 | MIT AND Unicode-3.0 | Copyright © 1991-2023 Unicode, Inc. | build-time only (dependency of proc-macro crates only) |
| universal-hash | 0.5.1 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019-2020 RustCrypto Developers | linked |
| untrusted | 0.9.0 | ISC | ISC | Copyright 2015-2016 Brian Smith. | resolved, not linked |
| ureq | 3.4.2 | MIT OR Apache-2.0 | MIT | Copyright (c) 2019 Martin Algesten | linked |
| ureq-proto | 0.6.4 | MIT OR Apache-2.0 | MIT | Copyright 2022 Martin Algesten | linked |
| utf8-zero | 0.8.1 | MIT OR Apache-2.0 | MIT | (no copyright line; Simon Sapin, Martin Algesten) | linked |
| webpki-root-certs | 1.0.9 | CDLA-Permissive-2.0 | CDLA-Permissive-2.0 | (no copyright line; Mozilla's trusted root certificates, derived from CCADB data) | resolved; its root list is not used (the system trust store is) |
| winit | 0.30.13 | Apache-2.0 | Apache-2.0 | (no copyright line; The winit contributors, Pierre Krieger); the `Key` and `KeyCode` names come from W3C specifications under the W3C Software and Document License (3.4) | linked |
| zeroize | 1.9.0 | Apache-2.0 OR MIT | MIT | Copyright (c) 2018-2026 The RustCrypto Project Developers | linked |
| zmij | 1.0.23 | MIT | MIT | (no copyright line; David Tolnay) | linked |

### 5.3 Dependency-path notes (cargo tree -i, target aarch64-apple-darwin)

- `ring 0.17.14` <- `snow 0.10.0` <- quadchroma. snow's `std` feature is defined as `["getrandom/std", "subtle/std", "ring/std", "blake2/std", "sha2/std"]`; the `ring/std` and `blake2/std` entries implicitly enable the optional `ring` and `blake2` dependencies although QuadChroma does not enable `ring-resolver`, `ring-accelerated` or `use-blake2`. snow only references ring under `#[cfg(feature = "ring-resolver")]`, so nothing in the binary refers to ring; the linker drops it (see the symbol counts above).

- `untrusted 0.9.0` <- `ring 0.17.14` <- `snow 0.10.0` <- quadchroma. Same status as ring.

- `libloading` is **not** in this target's dependency tree at all (`cargo tree -i libloading` prints nothing). With `--target all` it appears only on Linux (`dlib`/`wayland-sys`/`tiny-xlib` for winit and softbuffer) and as a build-dependency of `ffmpeg-sys-next` (`bindgen` -> `clang-sys`), i.e. never in this binary.

- `syn 3.0.6`, `quote 1.0.47`, `proc-macro2 1.0.107`, `unicode-ident 1.0.26` are reached only through the procedural-macro crates `foreign-types-macros 0.2.4` (<- foreign-types <- core-graphics <- winit) and `serde_derive 1.0.229` (<- serde). Procedural macros are loaded by the compiler and are not linked into the program. `syn 2.0.119` and `curve25519-dalek-derive` are not in the Mac tree (the derive crate is only pulled on x86_64).

### 5.4 Texts and notices specific to the Mac target

winit 0.30.13 and cursor-icon 1.2.0 are part of the Mac app as well; the W3C Software and Document License and the W3C Short Notice reproduced at the end of section 3.4 apply to them in the same way. The Rust standard library of the Mac app is covered in section 3.6, including the crates it bundles for this target (the rows marked "Mac" or "Windows and Mac" in its table).

Crates added in 1.0 that exist in both targets use the texts and copyright lines given in section 3.4 (MIT, the BSD-3-Clause text of ed25519-dalek and the CDLA-Permissive-2.0 text of webpki-root-certs). Crates added in 1.0 that exist only in the Mac target use the standard MIT text of section 3.4 (MIT applied wherever the licence field offers a choice; rustix: `Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT`, MIT applied):

- **core-foundation 0.10.1**: Copyright (c) 2012-2013 Mozilla Foundation
- **errno 0.3.14**: Copyright (c) 2014 Chris Wong
- **fastrand 2.5.0**: (no copyright line) The crate's MIT license file carries no copyright line. Author per Cargo.toml: Stjepan Glavina <stjepang@gmail.com>.
- **getrandom 0.4.3**: Copyright (c) 2018-2026 The rust-random Project Developers; Copyright (c) 2014 The Rust Project Developers
- **once_cell 1.21.4**: (no copyright line) The crate's MIT license file carries no copyright line. Author per Cargo.toml: Aleksey Kladov <aleksey.kladov@gmail.com>.
- **rustix 1.1.5**: (no copyright line) The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Dan Gohman <dev@sunfishcode.online>, Jakub Konka <kubkon@jakubkonka.com>.
  - Note: `license = "Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT"`; MIT applied. Its `COPYRIGHT` file says that copyrights in rustix are retained by their contributors.
- **security-framework 3.7.0**: Copyright (c) 2015 Steven Fackler
- **security-framework-sys 2.17.0**: Copyright (c) 2015 Steven Fackler
- **tempfile 3.27.0**: Copyright (c) 2015 Steven Allen

Crates that exist only in the Mac target and use the standard MIT text of section 3.4 with their own copyright line: bitflags 1.3.2 (Copyright (c) 2014 The Rust Project Developers); core-foundation 0.9.4, core-foundation-sys 0.8.7, core-graphics 0.23.2 and core-graphics-types 0.1.3 (Copyright (c) 2012-2013 Mozilla Foundation); foreign-types 0.5.0 and foreign-types-shared 0.3.1 (Copyright (c) 2017 The foreign-types Developers). The objc2 family and dispatch ship no license file inside the crate; their texts and attributions are:

#### MIT License, objc2 project crates (block2, objc-sys, objc2, objc2-*)

These crates ship no license file inside the crate package; their `license` field is `MIT` (or `Zlib OR Apache-2.0 OR MIT`, MIT chosen). The text of `LICENSE.txt` at the upstream release tags `objc2-0.5.2`, `block2-0.5.1` and `objc-sys-0.3.5` (https://github.com/madsmtm/objc2, fetched 2026-09-26; all three files identical) is:

```text
MIT License

Copyright (c) Steven Sheldon

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.
```

Applies to (0.5-series releases): block2 0.5.1, objc-sys 0.3.5, objc2 0.5.2, objc2-app-kit 0.2.2, objc2-foundation 0.2.2.

For the 0.6-series releases the repository's `LICENSE.txt` at the tags `objc2-0.6.4` and `objc2-encode-4.1.0` states that `objc2`, `block2`, `objc2-foundation` and `objc2-encode` are licensed under the MIT license and all other crates under Zlib OR Apache-2.0 OR MIT, but links to the generic MIT text and names no copyright holder. The maintainer and author per Cargo.toml is Mads Marquart <mads@marquart.dk>; the current `LICENSE-MIT.txt` on master reads:

```text
Copyright 2026 Mads Marquart

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.
```

Applies to (0.6-series releases): objc2 0.6.4, objc2-core-foundation 0.3.2, objc2-core-graphics 0.3.2, objc2-encode 4.1.0, objc2-foundation 0.3.2, objc2-quartz-core 0.3.2.

Note from the upstream `LICENSE.txt` (both tags): the crates are derived from Apple SDKs shipped with Xcode; using them requires the Xcode SDK, whose license (https://www.apple.com/legal/sla/docs/xcode.pdf) the builder has accepted. This affects only builders of the Mac app, not recipients of `QuadChroma.app`.

- **block2 0.5.1**: The crate ships no license file. `license = "MIT"` in Cargo.toml. Copyright line taken from LICENSE.txt at the upstream release tag `block2-0.5.1` (https://github.com/madsmtm/objc2). Authors per Cargo.toml: Steven Sheldon, Mads Marquart <mads@marquart.dk>.
- **objc-sys 0.3.5**: The crate ships no license file. `license = "MIT"`. Copyright line from LICENSE.txt at the upstream release tag `objc-sys-0.3.5` (https://github.com/madsmtm/objc2). Author per Cargo.toml: Mads Marquart <mads@marquart.dk>.
- **objc2 0.5.2**: The crate ships no license file. `license = "MIT"`. Copyright line from LICENSE.txt at the upstream release tag `objc2-0.5.2`. Authors per Cargo.toml: Steven Sheldon, Mads Marquart <mads@marquart.dk>.
- **objc2-app-kit 0.2.2**: The crate ships no license file. `license = "MIT"` (Cargo.toml). Released in the objc2 0.5 series (depends on objc2 0.5), whose release tag `objc2-0.5.2` carries LICENSE.txt "Copyright (c) Steven Sheldon"; maintainer Mads Marquart. Derived from Apple SDK headers, see the objc2 note below.
- **objc2-foundation 0.2.2**: The crate ships no license file. `license = "MIT"`. Released in the objc2 0.5 series; see objc2-app-kit 0.2.2.
- **objc2 0.6.4**: The crate ships no license file. `license = "MIT"`. At the release tag `objc2-0.6.4` the repository's LICENSE.txt only links to the MIT text and names no holder; the current LICENSE-MIT.txt on master reads "Copyright 2026 Mads Marquart" (fetched 2026-09-26). Author per Cargo.toml: Mads Marquart <mads@marquart.dk>.
- **objc2-core-foundation 0.3.2**: `license = "Zlib OR Apache-2.0 OR MIT"`; MIT chosen. No license file in the crate; no holder named at the objc2 0.6 release tags; maintainer Mads Marquart (master LICENSE-MIT.txt: "Copyright 2026 Mads Marquart"). Derived from Apple SDK headers.
- **objc2-core-graphics 0.3.2**: `license = "Zlib OR Apache-2.0 OR MIT"`; MIT chosen. No license file in the crate; see objc2-core-foundation.
- **objc2-encode 4.1.0**: The crate ships no license file. `license = "MIT"`. At the release tag `objc2-encode-4.1.0` the repository's LICENSE.txt names no holder. Author per Cargo.toml: Mads Marquart <mads@marquart.dk>.
- **objc2-foundation 0.3.2**: The crate ships no license file. `license = "MIT"` (Cargo.toml.orig notes that future contributions are Zlib OR Apache-2.0 OR MIT). Released in the objc2 0.6 series; see objc2 0.6.4.
- **objc2-quartz-core 0.3.2**: `license = "Zlib OR Apache-2.0 OR MIT"`; MIT chosen. No license file in the crate; see objc2-core-foundation.

#### MIT License, dispatch 0.2.0

The crate ships no license file and the upstream repository https://github.com/SSheldon/rust-dispatch has none either (checked 2026-09-26). `license = "MIT"` in Cargo.toml; author per Cargo.toml: Steven Sheldon. Copyright holder is therefore attributed as Steven Sheldon. The MIT text above applies, with the attribution "Copyright (c) Steven Sheldon".

#### Build-time only (Mac target)

These crates are procedural macros (`[lib] proc-macro = true` in their Cargo.toml) or are reached only through procedural macros (`cargo tree -i`). They run inside the compiler while building QuadChroma and no code of theirs ends up in the program (0 symbols for syn, quote, proc-macro2 and unicode-ident in the Mac client binary). Their licenses are listed here for completeness.

- **foreign-types-macros 0.2.4** (proc-macro): `license = "MIT/Apache-2.0"`, applied MIT. Copyright (c) 2017 The foreign-types Developers
- **proc-macro2 1.0.107** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay, Alex Crichton) Note: The crate's MIT license file carries no copyright line. Authors per Cargo.toml: David Tolnay <dtolnay@gmail.com>, Alex Crichton <alex@alexcrichton.com>.
- **quote 1.0.47** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay) Note: The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **serde_derive 1.0.229** (proc-macro): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; Erick Tryzelaar, David Tolnay) Note: The crate's MIT license file carries no copyright line. Authors per Cargo.toml: Erick Tryzelaar <erick.tryzelaar@gmail.com>, David Tolnay <dtolnay@gmail.com>.
- **syn 3.0.6** (dependency of proc-macro crates only): `license = "MIT OR Apache-2.0"`, applied MIT. (no copyright line; David Tolnay) Note: The crate's MIT license file carries no copyright line. Author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.
- **unicode-ident 1.0.26** (dependency of proc-macro crates only): `license = "(MIT OR Apache-2.0) AND Unicode-3.0"`, applied MIT AND Unicode-3.0. Copyright © 1991-2023 Unicode, Inc. Note: `license = "(MIT OR Apache-2.0) AND Unicode-3.0"`; MIT chosen for the code, Unicode-3.0 applies to the embedded Unicode data. The MIT file carries no copyright line; author per Cargo.toml: David Tolnay <dtolnay@gmail.com>.

The Unicode License v3 for unicode-ident 1.0.26 is reproduced in section 3.5.

## 6. NSIS (Windows setup and uninstaller)

The classic Windows Setup.exe and the independent Uninstall.exe contain the
NSIS 3.13 Unicode installer runtime, Modern UI 2, bundled language resources
and standard plug-ins used by the scripts in `installer/`. The selected
compressor is zlib; neither the LZMA nor bzip2 module nor the deprecated UAC
plug-in is used. The installed QuadChroma executable and portable ZIP do not
include an NSIS runtime. The setup embeds the same nine payload files as the
portable ZIP plus Uninstall.exe. The setup, Uninstall.exe and the plug-ins they
unpack carry an Authenticode signature of Robert Brandt; the plug-ins are
otherwise the unchanged NSIS 3.13 files.

Upstream: <https://nsis.sourceforge.io/>. Source and license:
<https://nsis.sourceforge.io/License> and the NSIS 3.13 source distribution.
Copyright (C) 1999-2026 Contributors. NSIS and its zlib compression module
are distributed under the zlib/libpng license:

```text
This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from
the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not
   be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
```

## 7. Sparkle (macOS app: updates)

The Mac app updates itself with Sparkle 2.9.6, the official release archive `Sparkle-2.9.6.tar.xz` (SHA-256 `52bf9e88cdd972fc0c81501377a880e90d47031bd8ca5462488f843e2609e192`), unchanged and signed again together with the app. It lies in `QuadChroma.app/Contents/Frameworks/Sparkle.framework` (including its helpers `Autoupdate`, `Updater.app` and the XPC services). Upstream: <https://sparkle-project.org>, source <https://github.com/sparkle-project/Sparkle/tree/2.9.6>. Sparkle is licensed under the MIT License; it includes code under the further licences named in its licence file. The complete `LICENSE` file of the release, also shipped in the app as `Contents/Resources/Sparkle-LICENSE.txt`:

```text
Copyright (c) 2006-2013 Andy Matuschak.
Copyright (c) 2009-2013 Elgato Systems GmbH.
Copyright (c) 2011-2014 Kornel Lesiński.
Copyright (c) 2015-2017 Mayur Pawashe.
Copyright (c) 2014 C.W. Betts.
Copyright (c) 2014 Petroules Corporation.
Copyright (c) 2014 Big Nerd Ranch.
All rights reserved.

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.

=================
EXTERNAL LICENSES
=================

bspatch.c and bsdiff.c, from bsdiff 4.3 <http://www.daemonology.net/bsdiff/>:

Copyright 2003-2005 Colin Percival
All rights reserved

Redistribution and use in source and binary forms, with or without
modification, are permitted providing that the following conditions 
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

--

sais.c and sais.h, from sais-lite (2010/08/07) <https://sites.google.com/site/yuta256/sais>:

The sais-lite copyright is as follows:

Copyright (c) 2008-2010 Yuta Mori All Rights Reserved.

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.

--

Portable C implementation of Ed25519, from https://github.com/orlp/ed25519

Copyright (c) 2015 Orson Peters <orsonpeters@gmail.com>

This software is provided 'as-is', without any express or implied warranty. In no event will the
authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial
applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the
   original software. If you use this software in a product, an acknowledgment in the product
   documentation would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be misrepresented as
   being the original software.

3. This notice may not be removed or altered from any source distribution.

--

SUSignatureVerifier.m:

Copyright (c) 2011 Mark Hamlin.

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted providing that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
```

## Appendix A: GNU General Public License, version 3

Source: <https://www.gnu.org/licenses/gpl-3.0.txt> (fetched 26 September 2026; SHA-256 of the file `3972dc9744f6499f0f9b2dbf76696f2ae7ad8af9b23dde66d6af86c9dfb36986`). Reproduced unchanged. Applies to: libgcc and libstdc++ (2.7, together with the GCC Runtime Library Exception).

```text
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

                            Preamble

  The GNU General Public License is a free, copyleft license for
software and other kinds of works.

  The licenses for most software and other practical works are designed
to take away your freedom to share and change the works.  By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users.  We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors.  You can apply it to
your programs, too.

  When we speak of free software, we are referring to freedom, not
price.  Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.

  To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights.  Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.

  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received.  You must make sure that they, too, receive
or can get the source code.  And you must show them these terms so they
know their rights.

  Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you legal permission to copy, distribute and/or modify it.

  For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software.  For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their problems will not be attributed erroneously to
authors of previous versions.

  Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so.  This is fundamentally incompatible with the aim of
protecting users' freedom to change the software.  The systematic
pattern of such abuse occurs in the area of products for individuals to
use, which is precisely where it is most unacceptable.  Therefore, we
have designed this version of the GPL to prohibit the practice for those
products.  If such problems arise substantially in other domains, we
stand ready to extend this provision to those domains in future versions
of the GPL, as needed to protect the freedom of users.

  Finally, every program is threatened constantly by software patents.
States should not allow patents to restrict development and use of
software on general-purpose computers, but in those that do, we wish to
avoid the special danger that patents applied to a free program could
make it effectively proprietary.  To prevent this, the GPL assures that
patents cannot be used to render the program non-free.

  The precise terms and conditions for copying, distribution and
modification follow.

                       TERMS AND CONDITIONS

  0. Definitions.

  "This License" refers to version 3 of the GNU General Public License.

  "Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.

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  To "convey" a work means any kind of propagation that enables other
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  1. Source Code.

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  The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
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  The Corresponding Source for a work in source code form is that
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  2. Basic Permissions.

  All rights granted under this License are granted for the term of
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  You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
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    model, to give anyone who possesses the object code either (1) a
    copy of the Corresponding Source for all the software in the
    product that is covered by this License, on a durable physical
    medium customarily used for software interchange, for a price no
    more than your reasonable cost of physically performing this
    conveying of source, or (2) access to copy the
    Corresponding Source from a network server at no charge.

    c) Convey individual copies of the object code with a copy of the
    written offer to provide the Corresponding Source.  This
    alternative is allowed only occasionally and noncommercially, and
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    d) Convey the object code by offering access from a designated
    place (gratis or for a charge), and offer equivalent access to the
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    Corresponding Source along with the object code.  If the place to
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    charge under subsection 6d.

  A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.

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tangible personal property which is normally used for personal, family,
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  "Installation Information" for a User Product means any methods,
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  If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
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if neither you nor any third party retains the ability to install
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been installed in ROM).

  The requirement to provide Installation Information does not include a
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  Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
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  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
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apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
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  When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it.  (Additional permissions may be written to require their own
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for which you have or can give appropriate copyright permission.

  Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:

    a) Disclaiming warranty or limiting liability differently from the
    terms of sections 15 and 16 of this License; or

    b) Requiring preservation of specified reasonable legal notices or
    author attributions in that material or in the Appropriate Legal
    Notices displayed by works containing it; or

    c) Prohibiting misrepresentation of the origin of that material, or
    requiring that modified versions of such material be marked in
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    d) Limiting the use for publicity purposes of names of licensors or
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    e) Declining to grant rights under trademark law for use of some
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    f) Requiring indemnification of licensors and authors of that
    material by anyone who conveys the material (or modified versions of
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  All other non-permissive additional terms are considered "further
restrictions" within the meaning of section 10.  If the Program as you
received it, or any part of it, contains a notice stating that it is
governed by this License along with a term that is a further
restriction, you may remove that term.  If a license document contains
a further restriction but permits relicensing or conveying under this
License, you may add to a covered work material governed by the terms
of that license document, provided that the further restriction does
not survive such relicensing or conveying.

  If you add terms to a covered work in accord with this section, you
must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.

  Additional terms, permissive or non-permissive, may be stated in the
form of a separately written license, or stated as exceptions;
the above requirements apply either way.

  8. Termination.

  You may not propagate or modify a covered work except as expressly
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  However, if you cease all violation of this License, then your
license from a particular copyright holder is reinstated (a)
provisionally, unless and until the copyright holder explicitly and
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  Moreover, your license from a particular copyright holder is
reinstated permanently if the copyright holder notifies you of the
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received notice of violation of this License (for any work) from that
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your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
not accept this License.  Therefore, by modifying or propagating a
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  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
for enforcing compliance by third parties with this License.

  An "entity transaction" is a transaction transferring control of an
organization, or substantially all assets of one, or subdividing an
organization, or merging organizations.  If propagation of a covered
work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party's predecessor in interest had or could
give under the previous paragraph, plus a right to possession of the
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the predecessor has it or can get it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the
rights granted or affirmed under this License.  For example, you may
not impose a license fee, royalty, or other charge for exercise of
rights granted under this License, and you may not initiate litigation
(including a cross-claim or counterclaim in a lawsuit) alleging that
any patent claim is infringed by making, using, selling, offering for
sale, or importing the Program or any portion of it.

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  A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based.  The
work thus licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims
owned or controlled by the contributor, whether already acquired or
hereafter acquired, that would be infringed by some manner, permitted
by this License, of making, using, or selling its contributor version,
but do not include claims that would be infringed only as a
consequence of further modification of the contributor version.  For
purposes of this definition, "control" includes the right to grant
patent sublicenses in a manner consistent with the requirements of
this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free
patent license under the contributor's essential patent claims, to
make, use, sell, offer for sale, import and otherwise run, modify and
propagate the contents of its contributor version.

  In the following three paragraphs, a "patent license" is any express
agreement or commitment, however denominated, not to enforce a patent
(such as an express permission to practice a patent or covenant not to
sue for patent infringement).  To "grant" such a patent license to a
party means to make such an agreement or commitment not to enforce a
patent against the party.

  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.

  If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License.  You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.

  Later license versions may give you additional or different
permissions.  However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.

  15. Disclaimer of Warranty.

  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
```

## Appendix B: GNU Lesser General Public License, version 2.1

Source: <https://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt> (fetched 26 September 2026). Reproduced unchanged. Applies to: FFmpeg (libavcodec, libavutil; section 2). FFmpeg's own `COPYING.LGPLv2.1` contains the same license.

```text
                  GNU LESSER GENERAL PUBLIC LICENSE
                       Version 2.1, February 1999

 Copyright (C) 1991, 1999 Free Software Foundation, Inc.
 <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

[This is the first released version of the Lesser GPL.  It also counts
 as the successor of the GNU Library Public License, version 2, hence
 the version number 2.1.]

                            Preamble

  The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.

  This license, the Lesser General Public License, applies to some
specially designated software packages--typically libraries--of the
Free Software Foundation and other authors who decide to use it.  You
can use it too, but we suggest you first think carefully about whether
this license or the ordinary General Public License is the better
strategy to use in any particular case, based on the explanations below.

  When we speak of free software, we are referring to freedom of use,
not price.  Our General Public Licenses are designed to make sure that
you have the freedom to distribute copies of free software (and charge
for this service if you wish); that you receive source code or can get
it if you want it; that you can change the software and use pieces of
it in new free programs; and that you are informed that you can do
these things.

  To protect your rights, we need to make restrictions that forbid
distributors to deny you these rights or to ask you to surrender these
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  For example, if you distribute copies of the library, whether gratis
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with the library after making changes to the library and recompiling
it.  And you must show them these terms so they know their rights.

  We protect your rights with a two-step method: (1) we copyright the
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modified by someone else and passed on, the recipients should know
that what they have is not the original version, so that the original
author's reputation will not be affected by problems that might be
introduced by others.
  Finally, software patents pose a constant threat to the existence of
any free program.  We wish to make sure that a company cannot
effectively restrict the users of a free program by obtaining a
restrictive license from a patent holder.  Therefore, we insist that
any patent license obtained for a version of the library must be
consistent with the full freedom of use specified in this license.

  Most GNU software, including some libraries, is covered by the
ordinary GNU General Public License.  This license, the GNU Lesser
General Public License, applies to certain designated libraries, and
is quite different from the ordinary General Public License.  We use
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  When a program is linked with a library, whether statically or using
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  We call this license the "Lesser" General Public License because it
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  Although the Lesser General Public License is Less protective of the
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                  GNU LESSER GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License Agreement applies to any software library or other
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This section is intended to make thoroughly clear what is believed to
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  13. The Free Software Foundation may publish revised and/or new
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                            NO WARRANTY

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                     END OF TERMS AND CONDITIONS

           How to Apply These Terms to Your New Libraries

  If you develop a new library, and you want it to be of the greatest
possible use to the public, we recommend making it free software that
everyone can redistribute and change.  You can do so by permitting
redistribution under these terms (or, alternatively, under the terms of the
ordinary General Public License).

  To apply these terms, attach the following notices to the library.  It is
safest to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least the
"copyright" line and a pointer to where the full notice is found.

    <one line to give the library's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This library is free software; you can redistribute it and/or
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    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
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Also add information on how to contact you by electronic and paper mail.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the library, if
necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the
  library `Frob' (a library for tweaking knobs) written by James Random Hacker.

  <signature of Moe Ghoul>, 1 April 1990
  Moe Ghoul, President of Vice

That's all there is to it!
```

## Appendix C: Apache License, Version 2.0

Source: <https://www.apache.org/licenses/LICENSE-2.0.txt> (text as contained in the license files of the Rust crates in section 3; reproduced unchanged). Applies to: the Rust crates in section 3 whose applied license is Apache-2.0 (among them winit), and the Apache-2.0 parts named in 3.4.

```text

                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
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End of THIRD_PARTY_NOTICES.txt (generated 26 September 2026 from the primary sources named above; QuadChroma - Robert Brandt - hello@quadchroma.tech).

