# Third-party notices

PulseSDR includes or is derived from the following third-party work.

## Source code

### pl_mpeg: MPEG-1 Audio Layer II decoder (ported to C#)
`src/SDRPulse.Core/Dab/Mp2Decoder.cs` is a C# port of the MP2 decoder in pl_mpeg
(https://github.com/phoboslab/pl_mpeg), which is itself based on kjmp2 by Martin J. Fiedler.
PulseSDR changes: requantisation follows ISO/IEC 11172-3 (levels divided by L instead of L+1), with
the output level calibrated accordingly.

```
MIT License

Copyright (c) 2019 Dominic Szablewski - https://phoboslab.org

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.
```

## Data

- **GeoNames** cities1000 and country names (`src/SDRPulse.App/Assets/places.tsv.gz`, the offline place list for
  finding the antenna location by name; made by `tools/build-gazetteer.sh`): Creative Commons Attribution 4.0,
  https://www.geonames.org
- **Natural Earth** 1:110m coastline (`src/SDRPulse.App/Assets/coastline.txt`) and 1:50m land, lakes, rivers,
  borders, roads and populated places (`src/SDRPulse.App/Assets/worldmap.bin`, the offline world map): public domain,
  https://www.naturalearthdata.com
- **Sentinel-2 cloudless 2017** satellite map tiles by EOX IT Services GmbH (contains modified Copernicus Sentinel
  data 2017), downloaded while you look at the map: Creative Commons Attribution 4.0, https://s2maps.eu
- **NASA Global Imagery Browse Services (GIBS), Blue Marble** map tiles and the offline basemap package
  (`basemap-bluemarble-z0-6.zip`): public domain, https://earthdata.nasa.gov/gibs
- **tar1090-db** aircraft registry (Mictronics database, by wiedehopf), downloaded when chosen: Open Data Commons
  Attribution License 1.0, https://github.com/wiedehopf/tar1090-db
- **OpenFlights** airline names, downloaded when chosen: Open Database License 1.0, https://openflights.org
- **planespotters.net** aircraft photos (credited and linked on each photo) and **adsbdb.com** routes, looked up
  online when an aircraft is selected
- **SatNOGS DB** transmitter data (downloaded at run time, cached): CC BY-SA 4.0, https://db.satnogs.org
- **CelesTrak** orbital elements (downloaded at run time, cached): https://celestrak.org

## Models (bundled)

- **Silero VAD** (`silero_vad.onnx`): MIT License, https://github.com/snakers4/silero-vad
- **DeepFilterNet3** (`deepfilternet3.onnx`): MIT / Apache-2.0, https://github.com/Rikorose/DeepFilterNet

## Models (downloaded when chosen)

- **OpenAI Whisper** Tiny, Base, Small and Large-v3 Turbo, ggml conversion from whisper.cpp: MIT License,
  https://github.com/openai/whisper, https://huggingface.co/ggerganov/whisper.cpp
- **NVIDIA Parakeet TDT 0.6B v3** (int8 ONNX export by k2-fsa for sherpa-onnx): Creative Commons Attribution 4.0,
  https://huggingface.co/nvidia/parakeet-tdt-0.6b-v3
- **M2M100 418M** translator by Meta AI (ONNX conversion by Xenova): MIT License,
  https://huggingface.co/facebook/m2m100_418M
- **YAMNet** speech / music detector by Google (ONNX conversion by zeropointnine): Apache-2.0,
  https://github.com/tensorflow/models/tree/master/research/audioset/yamnet

## Tools downloaded on request

- **Zadig** 2.9 (Pete Batard / Akeo Consulting, from libwdi 1.5.1), downloaded and started only when you ask to
  install the USB driver: GNU General Public License v3; its complete source (`libwdi-1.5.1-source.zip`) is on
  pulsesdr.cc next to it. https://zadig.akeo.ie

## Libraries

- **NuGet packages:** Avalonia (MIT), CommunityToolkit.Mvvm (MIT), Microsoft.Data.Sqlite (MIT), SQLitePCLRaw
  (Apache-2.0) with SQLite (public domain, `e_sqlite3.dll`), Microsoft.ML.OnnxRuntime (MIT), Microsoft.ML.Tokenizers
  (MIT) with Google.Protobuf (BSD-3-Clause), NAudio.WinMM and NAudio.Core (MIT), Velopack (MIT), Whisper.net and
  whisper.cpp / ggml (MIT), MicroCom.Runtime (MIT), Microsoft.IO.RecyclableMemoryStream (MIT).
- **Shipped with Avalonia:** SkiaSharp (MIT) and Skia (BSD-3-Clause, `libSkiaSharp.dll`), HarfBuzzSharp (MIT) and
  HarfBuzz (Old MIT, `libHarfBuzzSharp.dll`), ANGLE (BSD-3-Clause, `av_libglesv2.dll`), the Inter font (SIL Open
  Font License 1.1).
- **sherpa-onnx** (Apache-2.0, https://github.com/k2-fsa/sherpa-onnx): the managed wrapper and
  `sherpa-onnx-c-api.dll`.

## FFmpeg (DAB+ audio and the MP3 network stream)

PulseSDR ships unmodified FFmpeg libraries (`codecs\avcodec-63.dll`, `avutil-61.dll`, `swresample-7.dll`) under the
**GNU Lesser General Public License v2.1 or later** (LGPL build; full text in `codecs\FFMPEG-LICENSE.txt`). They are
loaded at run time only and can be replaced with any compatible build. Binaries: BtbN FFmpeg-Builds (win64,
lgpl-shared); the exact FFmpeg version is in `codecs\VERSION.txt` (the build shipped now is FFmpeg git commit
9d3f0f2c58: https://github.com/FFmpeg/FFmpeg/tree/9d3f0f2c58, build scripts: https://github.com/BtbN/FFmpeg-Builds).
The complete corresponding source is available from pulsesdr.cc next to the download, and on request from
contact@pulsesdr.cc for at least three years. FFmpeg is a trademark of Fabrice Bellard.

A user-supplied Fraunhofer FDK AAC library (`libfdk-aac-2.dll` in `%APPDATA%\PulseSDR\codecs`) is used instead
when present; it is not distributed with PulseSDR.

Protocol knowledge was cross-checked against public documentation and open-source programs (dab-cmdline, slowrx,
SatDump, dumpvdl2, multimon-ng, acarsdec, rtl_433, and the osmocom / RTL-SDR Blog librtlsdr tuner driver); no code
from those GPL projects is included.