FlipIt for Android includes the third-party software listed below. Each
component stays under its own licence, and the full licence text for each is
available at the link beside it.

Nothing here is downloaded while you use FlipIt. Everything listed is inside
the app when you install it.


== The MP3 encoder, and what its licence asks of us

LAME 3.100
  Licence: LGPL-2.1-or-later
  https://lame.sourceforge.io/

LAME is built from its own sources, unmodified, and ships as its own shared
library - libmp3lame.so - with FlipIt's code in a separate one, libflipitlame.so,
that links to it when the app runs.

That arrangement is deliberate. LGPL-2.1 asks that you be able to replace LAME
with a different build of it without rebuilding the app around it, and keeping
the two apart is what makes that possible. The sources LAME was built from,
the library build files, and this notice are available with the public downloads:
https://github.com/rogueminddev-eng/flipit-website/releases
See the LAME source companion in the third-party materials asset. It contains
only the library sources and library build configuration.


== Reading scanned pages

Tesseract OCR 5.x, via Tesseract4Android 4.8.0
  Licence: Apache-2.0
  https://github.com/tesseract-ocr/tesseract
  https://github.com/adaptech-cz/Tesseract4Android

Leptonica
  Licence: BSD-2-Clause
  https://github.com/DanBloomberg/leptonica

libjpeg-turbo
  Licence: IJG / BSD-3-Clause / zlib
  https://libjpeg-turbo.org/

libpng
  Licence: PNG Reference Library License v2
  http://www.libpng.org/pub/png/libpng.html

English language model (eng.traineddata, "fast")
  Licence: Apache-2.0
  https://github.com/tesseract-ocr/tessdata_fast

This is the same model the Windows version of FlipIt uses, so a scanned page
reads the same way on a phone as it does on a PC.


== Reading and writing PDFs

PDFBox-Android 2.0.27.0
  Licence: Apache-2.0
  https://github.com/TomRoush/PdfBox-Android

Apache PDFBox
  Licence: Apache-2.0
  https://pdfbox.apache.org/

Bouncy Castle (used by PDFBox for encryption)
  Licence: MIT
  https://www.bouncycastle.org/


== The app itself

Kotlin standard library and coroutines
  Licence: Apache-2.0
  https://github.com/JetBrains/kotlin

AndroidX, including Jetpack Compose and Material 3
  Licence: Apache-2.0
  https://developer.android.com/jetpack/androidx

Roboto (the system typeface Android draws text with)
  Licence: Apache-2.0
  https://github.com/googlefonts/roboto