pandemonium_engine/thirdparty/README.md

# Third party libraries

Please keep categories (`##` level) listed alphabetically and matching their
respective folder names. Use two empty lines to separate categories for
readability.


## certs

- Upstream: Mozilla, via https://github.com/bagder/ca-bundle
- Version: git (b2f7415648411b6fd7c298c6c92d6552f0165f60, 2021)
- License: MPL 2.0


## cvtt

- Upstream: https://github.com/elasota/cvtt
- Version: 1.0.0-beta4 (cc8472a04ba110fe999c686d07af40f7839051fd, 2018)
- License: MIT

Files extracted from upstream source:

- all .cpp, .h, and .txt files in ConvectionKernels/

## enet

- Upstream: http://enet.bespin.org
- Version: 1.3.17 (e0e7045b7e056b454b5093cb34df49dc4cee0bee, 2020)
- License: MIT

Files extracted from upstream source:

- all .c files in the main directory (except unix.c win32.c)
- the include/enet/ folder as enet/ (except unix.h win32.h)
- LICENSE file

Important: enet.h, host.c, protocol.c have been slightly modified
to be usable by Godot's socket implementation and allow IPv6 and DTLS.
Apply the patches in the `patches/` folder when syncing on newer upstream
commits.

Three files (godot.cpp, enet/godot.h, enet/godot_ext.h) have been added to provide
enet socket implementation using Godot classes.

It is still possible to build against a system wide ENet but doing so
will limit its functionality to IPv4 only.


## etc2comp

- Upstream: https://github.com/google/etc2comp
- Version: git (9cd0f9cae0f32338943699bb418107db61bb66f2, 2017)
- License: Apache 2.0

Files extracted from upstream source:

- all .cpp and .h files in EtcLib/
- README.md, LICENSE, AUTHORS

Important: Some files have Godot-made changes.
They are marked with `// -- PANDEMONIUM start --` and `// -- PANDEMONIUM end --`
comments.


## fonts

- `NotoSans*.ttf`, `NotoNaskhArabicUI_Regular.ttf`:
  * Upstream: https://github.com/googlei18n/noto-fonts
  * Version: 1.06 (2017)
  * License: OFL-1.1
  * Comment: Use UI font variant if available, because it has tight vertical metrics and
    good for UI.
- `Hack_Regular.ttf`:
  * Upstream: https://github.com/source-foundry/Hack
  * Version: 3.003 (2018)
  * License: MIT + Bitstream Vera License
- `DroidSans*.ttf`:
  * Upstream: https://android.googlesource.com/platform/frameworks/base/+/master/data/fonts/
  * Version: ? (pre-2014 commit when DroidSansJapanese.ttf was obsoleted)
  * License: Apache 2.0


## freetype

- Upstream: https://www.freetype.org
- Version: 2.12.1 (e8ebfe988b5f57bfb9a3ecb13c70d9791bce9ecf, 2022)
- License: FreeType License (BSD-like)

Files extracted from upstream source:

- `src/` folder, minus the `dlg` and `tools` subfolders
  * These files can be removed: `.dat`, `.diff`, `.mk`, `.rc`, `README*`
  * In `src/gzip/`, remove zlib files (everything but `ftgzip.c` and `ftzconf.h`)
- `include/` folder, minus the `dlg` subfolder
- `LICENSE.TXT` and `docs/FTL.TXT`

Some changes have been made in order to prevent LTO from removing code.
They are marked with `// -- GODOT start --` and `// -- GODOT end --`
comments. Apply the patches in the `patches/` folder when syncing on newer upstream
commits.


## glad

- Upstream: https://github.com/Dav1dde/glad
- Version: 0.1.34 (a5ca31c88a4cc5847ea012629aff3690f261c7c4, 2020)
- License: MIT

The files we package are automatically generated.
See the header of glad.c for instructions on how to generate them for
the GLES version Godot targets.


## jpeg-compressor

- Upstream: https://github.com/richgel999/jpeg-compressor
- Version: 2.00 (aeb7d3b463aa8228b87a28013c15ee50a7e6fcf3, 2020)
- License: Public domain or MIT

Files extracted from upstream source:

- `jpgd*.{c,h}`


## libogg

- Upstream: https://www.xiph.org/ogg
- Version: 1.3.5 (e1774cd77f471443541596e09078e78fdc342e4f, 2021)
- License: BSD-3-Clause

Files extracted from upstream source:

- `src/*.{c,h}`
- `include/ogg/*.h` in `ogg/` (run `configure` to generate `config_types.h`)
- `COPYING`


## libpng

- Upstream: http://libpng.org/pub/png/libpng.html
- Version: 1.6.38 (0a158f3506502dfa23edfc42790dfaed82efba17, 2022)
- License: libpng/zlib

Files extracted from upstream source:

- all .c and .h files of the main directory, except from
  `example.c` and `pngtest.c`
- the arm/ folder
- `scripts/pnglibconf.h.prebuilt` as `pnglibconf.h`
- `LICENSE`


## libtheora

- Upstream: https://www.theora.org
- Version: 1.1.1 (2010)
- License: BSD-3-Clause

Files extracted from upstream source:

- all .c, .h in lib/
- all .h files in include/theora/ as theora/
- COPYING and LICENSE

Upstream patches included in the `patches` directory have been applied
on top of the 1.1.1 source (not included in any stable release yet).


## libvorbis

- Upstream: https://www.xiph.org/vorbis
- Version: 1.3.7 (0657aee69dec8508a0011f47f3b69d7538e9d262, 2020)
- License: BSD-3-Clause

Files extracted from upstream source:

- `lib/*` except from: `lookups.pl`, `Makefile.*`
- `include/vorbis/*.h` as `vorbis/`
- `COPYING`

## mbedtls

- Upstream: https://github.com/Mbed-TLS/mbedtls
- Version: 2.18.1 (dd79db10014d85b26d11fe57218431f2e5ede6f2, 2022)
- License: Apache 2.0

File extracted from upstream release tarball:

- All `*.h` from `include/mbedtls/` to `thirdparty/mbedtls/include/mbedtls/` except `config_psa.h` and `psa_util.h`.
- All `*.c` and `*.h` from `library/` to `thirdparty/mbedtls/library/` except those starting with `psa_*`.
- The `LICENSE` file.
- Applied the patch in `patches/1453.diff` (upstream PR:
  https://github.com/ARMmbed/mbedtls/pull/1453).
- Added 2 files `godot_core_mbedtls_platform.c` and `godot_core_mbedtls_config.h`
  providing configuration for light bundling with core.


## minimp3

- Upstream: https://github.com/lieff/minimp3
- Version: git (afb604c06bc8beb145fecd42c0ceb5bda8795144, 2021)
- License: CC0 1.0

Files extracted from upstream repository:

- `minimp3.h`
- `minimp3_ex.h`
- `LICENSE`


## miniupnpc

- Upstream: https://github.com/miniupnp/miniupnp
- Version: 2.2.4 (7d1d8bc3868b08ad003bad235eee57562b95b76d, 2022)
- License: BSD-3-Clause

Files extracted from upstream source:

- Copy `miniupnpc/src` and `miniupnpc/include` to `thirdparty/miniupnpc`
- Remove the following test or sample files:
  `listdevices.c minihttptestserver.c miniupnpcmodule.c upnpc.c upnperrors.* test*`
- `LICENSE`

The only modified file is `src/miniupnpcstrings.h`, which was created for Godot
(it is usually autogenerated by cmake). Bump the version number for miniupnpc in
that file when upgrading.


## minizip

- Upstream: https://www.zlib.net
- Version: 1.2.13 (zlib contrib, 2022)
- License: zlib

Files extracted from the upstream source:

- From `contrib/minizip`:
  `{crypt.h,ioapi.{c,h},unzip.{c,h},zip.{c,h}}`
  `MiniZip64_info.txt`


Important: Some files have Godot-made changes for use in core/io.
They are marked with `/* PANDEMONIUM start */` and `/* PANDEMONIUM end */`
comments and a patch is provided in the `patches` folder.


## misc

Collection of single-file libraries used in Godot components.

- `clipper.{cpp,hpp}`
  * Upstream: https://sourceforge.net/projects/polyclipping
  * Version: 6.4.2 (2017) + Godot changes (added optional exceptions handling)
  * License: BSL-1.0
- `fastlz.{c,h}`
  * Upstream: https://github.com/ariya/FastLZ
  * Version: 0.5.0 (4f20f54d46f5a6dd4fae4def134933369b7602d2, 2020)
  * License: MIT
- `hq2x.{cpp,h}`
  * Upstream: https://github.com/brunexgeek/hqx
  * Version: TBD, file structure differs
  * License: Apache 2.0
- `ifaddrs-android.{cc,h}`
  * Upstream: https://chromium.googlesource.com/external/webrtc/stable/talk/+/master/base/ifaddrs-android.h
  * Version: git (5976650443d68ccfadf1dea24999ee459dd2819d, 2013)
  * License: BSD-3-Clause
- `mikktspace.{c,h}`
  * Upstream: https://archive.blender.org/wiki/index.php/Dev:Shading/Tangent_Space_Normal_Maps/
  * Version: 1.0 (2011)
  * License: zlib
- `open-simplex-noise.{c,h}`
  * Upstream: https://github.com/smcameron/open-simplex-noise-in-c
  * Version: git (826f1dd1724e6fb3ff45f58e48c0fbae864c3403, 2020) + custom changes
  * License: Public Domain or Unlicense
- `pcg.{cpp,h}`
  * Upstream: http://www.pcg-random.org
  * Version: minimal C implementation, http://www.pcg-random.org/download.html
  * License: Apache 2.0
- `smaz.{c,h}`
  * Upstream: https://github.com/antirez/smaz
  * Version: git (2f625846a775501fb69456567409a8b12f10ea25, 2012)
  * License: BSD-3-Clause
  * Modifications: use `const char*` instead of `char*` for input string
- `stb_rect_pack.h`
  * Upstream: https://github.com/nothings/stb
  * Version: 1.01 (1ee679ca2ef753a528db5ba6801e1067b40481b8, 2021)
  * License: Public Domain or Unlicense or MIT
- `stb_vorbis.c`
  * Upstream: https://github.com/nothings/stb
  * Version: 1.22 (1ee679ca2ef753a528db5ba6801e1067b40481b8, 2021)
  * License: Public Domain or Unlicense or MIT
- `triangulator.{cpp,h}`
  * Upstream: https://github.com/ivanfratric/polypartition (`src/polypartition.cpp`)
  * Version: TBD, class was renamed
  * License: MIT
- `yuv2rgb.h`
  * Upstream: http://wss.co.uk/pinknoise/yuv2rgb/ (to check)
  * Version: ?
  * License: BSD


## nanosvg

- Upstream: https://github.com/memononen/nanosvg
- Version: git (f0a3e1034dd22e2e87e5db22401e44998383124e, 2022)
- License: zlib

Files extracted from the upstream source:

- All `.h` files in `src/`
- `LICENSE.txt`

`nanosvg.cc` is a custom file added to configure the build of the header only
library.


## opus

- Upstream: https://opus-codec.org
- Version: 1.1.5 (opus) and 0.8 (opusfile) (2017)
- License: BSD-3-Clause

Files extracted from upstream source:

- all .c and .h files in src/ (both opus and opusfile)
- all .h files in include/ (both opus and opusfile) as opus/
- remove unused `opus_demo.c`,
- remove `http.c`, `wincerts.c` and `winerrno.h` (part of
  unused libopusurl)
- celt/ and silk/ subfolders
- COPYING


## pcre2

- Upstream: http://www.pcre.org
- Version: 10.40 (3103b8f20a3b9944b177e812fde29fbfb8b90558, 2022)
- License: BSD-3-Clause

Files extracted from upstream source:

- Files listed in the file NON-AUTOTOOLS-BUILD steps 1-4
- All .h files in src/ apart from pcre2posix.h
- src/pcre2_jit_match.c
- src/pcre2_jit_misc.c
- src/sljit/
- AUTHORS and LICENCE

A sljit patch from upstream was backported to fix macOS < 11.0 compilation
in 10.40, it can be found in the `patches` folder.


## pvrtccompressor

- Upstream: https://bitbucket.org/jthlim/pvrtccompressor (dead link)
  Unofficial backup fork: https://github.com/LibreGamesArchive/PVRTCCompressor
- Version: hg (cf7177748ee0dcdccfe89716dc11a47d2dc81af5, 2015)
- License: BSD-3-Clause

Files extracted from upstream source:

- all .cpp and .h files apart from `main.cpp`
- LICENSE.TXT


## recastnavigation

- Upstream: https://github.com/recastnavigation/recastnavigation
- Version: git (4fef0446609b23d6ac180ed822817571525528a1, 2022)
- License: zlib

Files extracted from upstream source:

- `Recast/` folder without `CMakeLists.txt`
- License.txt


## rvo2

- Upstream: https://github.com/snape/RVO2-3D
- Version: git (bfc048670a4e85066e86a1f923d8ea92e3add3b2, 2021)
- License: Apache 2.0

Files extracted from upstream source:

- All .cpp and .h files in the `src/` folder except for Export.h, RVO.h, RVOSimulator.cpp and RVOSimulator.h
- LICENSE

Important: Some files have Godot-made changes; so to enrich the features
originally proposed by this library and better integrate this library with
Godot. See the patch in the `patches` folder for details.


## squish

- Upstream: https://sourceforge.net/projects/libsquish
- Version: 1.15 (r104, 2017)
- License: MIT

Files extracted from upstream source:

- all .cpp, .h and .inl files

Important: Some files have Godot-made changes.
They are marked with `// -- PANDEMONIUM start --` and `// -- PANDEMONIUM end --`
comments and a patch is provided in the squish/ folder.


## tinyexr

- Upstream: https://github.com/syoyo/tinyexr
- Version: 1.0.1 (67010eae802211202d0797f4df2b809f4ba7442c, 2021)
- License: BSD-3-Clause

Files extracted from upstream source:

- `tinyexr.{cc,h}`

The `tinyexr.cc` file was modified to include `zlib.h` which we provide,
instead of `miniz.h` as an external dependency.


## vhacd

- Upstream: https://github.com/kmammou/v-hacd
- Version: git (b07958e18e01d504e3af80eeaeb9f033226533d7, 2019)
- License: BSD-3-Clause

Files extracted from upstream source:

- From `src/VHACD_Lib/`: `inc`, `public` and `src`
- `LICENSE`

Some downstream changes have been made and are identified by
`// -- PANDEMONIUM start --` and `// -- PANDEMONIUM end --` comments.
They can be reapplied using the patches included in the `vhacd`
folder.


## wslay

- Upstream: https://github.com/tatsuhiro-t/wslay
- Version: 1.1.1+git (45d22583b488f79d5a4e598cc7675c191c5ab53f, 2021)
- License: MIT

File extracted from upstream release tarball:

- Run `cmake .` to generate `config.h` and `wslayver.h`.
  Contents might need tweaking for Godot, review diff.
- All `*.c` and `*.h` files from `lib/`
- All `*.h` in `lib/includes/wslay/` as `wslay/`
- `wslay/wslay.h` has a small Godot addition to fix MSVC build.
  See `patches/msvcfix.diff`
- `COPYING`


## zlib

- Upstream: https://www.zlib.net
- Version: 1.2.13 (2022)
- License: zlib

Files extracted from upstream source:

- All `*.c` and `*.h` files
- `LICENSE`


## zstd

- Upstream: https://github.com/facebook/zstd
- Version: 1.5.2 (e47e674cd09583ff0503f0f6defd6d23d8b718d3, 2022)
- License: BSD-3-Clause

Files extracted from upstream source:

- `lib/{common/,compress/,decompress/,zstd.h,zstd_errors.h}`
- `LICENSE`