# Third-party references and notices

Labfy RGB is an independently written C17 userspace implementation. No VRGB or
hid-rgb-ctl implementation source is vendored. Their public implementations were
consulted to understand discovery and the standard HID LampArray report layouts;
the tested device descriptor was also inspected directly. The notices below
retain attribution to these MIT references and do not imply endorsement.

## VRGB

Repository: https://github.com/vrgb-dev/vrgb

Reviewed revision: `b2ec4a24e3af6769e9758c607f0520a37194c6c7`.
Relevant source: `vrgb.py` (discovery, range update, firmware mode).

```text
MIT License

Copyright (c) 2026 vrgb-dev

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 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.
```

## hid-rgb-ctl

Repository: https://github.com/xz-dev/hid-rgb-ctl

Reviewed revision: `b711cff99aac5af6839f424fdd3ccdd5b62fa21c`.
Relevant source: `src/device.rs` (attributes, LevelCount conversion and control).

```text
MIT License

Copyright (c) 2026 Xiangzhe

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.
```

## System interfaces and protocol metadata

Linux libc/UAPI headers are build dependencies, not copied implementation files.
The project uses the documented Linux hidraw userspace interface. The included
HID descriptor fixture contains report layout metadata from the tested device,
not a firmware image or personal input capture. USB-IF protocol documentation
and Linux sources are linked in `docs/protocol.md`; neither document nor kernel
implementation source is bundled.