Add third party notices

Author: sa-exe

THIRDPARTY.md

@@ -0,0 +1,82 @@
+NitroSharp uses the following third-party libraries that may be distributed under licenses different than NitroSharp itself:
+
+## Veldrid
+https://github.com/mellinoe/veldrid
+
+Licensed under the [MIT](https://github.com/mellinoe/veldrid/blob/master/LICENSE) license.
+
+Copyright (c) 2017 Eric Mellino and Veldrid contributors.
+
+## ImageSharp
+https://github.com/SixLabors/ImageSharp
+
+Licensed under the [Apache License, Version 2.0](https://github.com/SixLabors/ImageSharp/blob/master/LICENSE).
+
+Copyright (c) Six Labors.
+
+## SharpDX
+https://github.com/sharpdx/SharpDX
+
+Licensed under the [MIT](https://github.com/sharpdx/SharpDX/blob/master/LICENSE) license.
+
+Copyright (c) 2010-2014 SharpDX - Alexandre Mutel.
+
+## Vortice.Windows
+https://github.com/amerkoleci/Vortice.Windows
+
+Licensed under the [MIT](https://github.com/amerkoleci/Vortice.Windows/blob/main/LICENSE) license.
+
+Copyright (c) 2019-2021 Amer Koleci and Vortice contributors.
+
+## MessagePack for C#
+https://github.com/neuecc/MessagePack-CSharp
+
+Licensed under the [MIT](https://github.com/neuecc/MessagePack-CSharp/blob/master/LICENSE) license.
+
+Copyright (c) 2017 Yoshifumi Kawai and contributors.
+
+## sprintf\.NET
+https://github.com/adamhewitt627/sprintf.NET
+
+Licensed under the [MIT](https://github.com/adamhewitt627/sprintf.NET/blob/master/LICENSE) license.
+
+Copyright (c) 2018 Adam Hewitt.
+
+## FFmpeg
+https://www.ffmpeg.org/
+
+Licensed under the [LGPLv2.1](https://git.ffmpeg.org/gitweb/ffmpeg.git/blob_plain/HEAD:/COPYING.LGPLv2.1) license.
+
+The included FFmpeg binaries are built from the [original source code](https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2) with no optional GPL-licensed or non-free components enabled. The exact build script used for producing the included binaries can be found at [this location](https://dev.azure.com/goldenjoe/_git/nitrosharp-deps?path=%2Fbuild-ffmpeg.ps1).
+NitroSharp uses dynamic linking for the FFmpeg binaries on all supported platforms.
+
+## FreeType
+https://www.freetype.org/
+
+Licensed under the [FreeType License](https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/docs/FTL.TXT).
+
+Copyright (C) 2006-2021 by
+David Turner, Robert Wilhelm, and Werner Lemberg.
+
+The included FreeType binaries are built from the [original source code](https://git.savannah.gnu.org/git/freetype/freetype2.git). The exact build script can be found at [this location](https://dev.azure.com/goldenjoe/_git/nitrosharp-deps?path=%2Fbuild-freetype.ps1). NitroSharp uses dynamic linking for the FreeType binaries on all supported platforms.
+
+## OpenAL Soft
+https://openal-soft.org/
+
+OpenAL cross platform audio library
+
+Copyright (C) 2008 by authors.
+
+Licensed under the [LGPLv2](https://github.com/kcat/openal-soft/blob/master/COPYING) license.
+
+The included OpenAL Soft binaries are built from the [original source code](https://github.com/kcat/openal-soft.git). The exact build script can be found at [this location](https://dev.azure.com/goldenjoe/_git/nitrosharp-deps?path=%2Fbuild-openal.ps1). NitroSharp uses dynamic linking for the OpenAL Soft binaries on all supported platforms.
+
+---
+
+Additionally, the following third-party libraries have been vendored into the repository:
+
+## OpenAL#
+Refer to the ``third_party/OpenAL-CS`` directory for more information.
+
+## FFmpeg.AutoGen
+Refer to the ``third_party/FFmpeg.AutoGen`` directory for more information.

src/FreeTypeBindings/LICENSE.txt

@@ -1,3 +1,4 @@
-Some of the code is taken from or based on [SharpFont](https://github.com/Robmaister/SharpFont.git).
+Some of the code is either directly taken from or based on [SharpFont](https://github.com/Robmaister/SharpFont.git), an open source library licensed under the MIT license.
 Copyright (c) 2012-2016 Robert Rouhani <[email protected]>
 SharpFont based on Tao.FreeType, Copyright (c) 2003-2007 Tao Framework Team
+See [LICENSE](https://github.com/Robmaister/SharpFont/blob/master/LICENSE) for details.

src/FreeTypeBindings/Readme.md

@@ -1,6 +1,9 @@
-This is a modified version of [FFmpeg.AutoGen](https://github.com/Ruslan-B/FFmpeg.AutoGen), an open source library licensed under LGPL-3.0.
-Copyright © Ruslan Balanukhin 2018 All rights reserved.
+This directory contains a modified version of [FFmpeg.AutoGen](https://github.com/Ruslan-B/FFmpeg.AutoGen), an open source library licensed under LGPL-3.0.
+Copyright © Ruslan Balanukhin 2020 All rights reserved.
 See LICENSE.txt for details.
+Based on version 4.1.
 
-Contains changes by @SomeAnonDev:
-- The generated code uses PInvoke instead of a LoadLibrary/dlopen-based solution.
+Local modifications:
+- Only the generated bindings are included
+- PInvoke is used for interop rather than a LoadLibrary/dlopen-based solution.
+- Some of the generated code may have been removed

third_party/FFmpeg.AutoGen/Readme.md

@@ -1,7 +1,7 @@
-This is a modified version of [OpenAL-CS](https://github.com/flibitijibibo/OpenAL-CS), an open source library licensed under the zlib license.
+This directory contains a modified version of [OpenAL#](https://github.com/flibitijibibo/OpenAL-CS), an open source library licensed under the zlib license.
 Copyright (c) 2014-2015 Ethan Lee
 See LICENSE for details.
 
-Contains changes by @SomeAnonDev:
-- A different nativeLibName is used depending on RuntimeIdentifier
+Local modifications:
+- A different ``nativeLibName`` is used depending on ``RuntimeIdentifier``
 - Some of the files and functions that aren't used by NitroSharp have been removed