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SoLoud, like everything else, stands on the shoulders of giants; however, care has been taken to only incorporate source code that is under liberal licenses, namely ZLib/LibPNG, CC0 or public domain, or similar, like WTFPL or Unlicense, where you don't need to include mention of the code in your documentation or splash screens or any such nonsense.

Any patches submitted to SoLoud must agree to be under compatible licenses.

SoLoud Proper

SoLoud proper is licensed under the ZLib/LibPNG license. The code is a clean-room implementation with no outside sources used.


SoLoud audio engine
Copyright (c) 2013-2015 Jari Komppa

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

   1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.

   2. Altered source versions must be plainly marked as such, and must 
   not be misrepresented as being the original software.

   3. This notice may not be removed or altered from any source
   distribution.

OGG Support

The OGG support in the Wav and WavStream sound sources is based on stb_vorbis by Sean Barrett, and it's in the public domain. You can find more information (and latest version) at http://nothings.org/stb_vorbis/

Speech Synthesizer

The speech synth is based on rsynth by the late Nick Ing-Simmons (et al). He described the legal status as:


    This is a text to speech system produced by
    integrating various pieces of code and tables
    of data, which are all (I believe) in the
    public domain.

Since then, the rsynth source code has passed legal checks by several open source organizations, so it "should" be pretty safe.

The primary copyright claims seem to have to do with text-to-speech dictionary use, which I've removed completely.

I've done some serious refactoring, clean-up and feature removal on the source, as all I need is "a" free, simple speech synth, not a "good" speech synth. Since I've removed a bunch of stuff, this is probably safer public domain release than the original.

I'm placing my changes in public domain as well, or if that's not acceptable for you, then CC0: http://creativecommons.org/publicdomain/zero/1.0/.

The SoLoud interface files (soloud_speech.*) are under the same ZLib/LibPNG license as the other SoLoud bits.

Fast Fourier Transform (FFT)

FFT calculation is based on fftreal by Laurent de Soras, under WTFPL, which lets you do whatever you want with it.

Sfxr

The sfxr sound effects synthesizer is by Tomas Pettersson, re-licensed under zlib/libpng license by permission.


Copyright (c) 2014 Jari Komppa
Based on code (c) by Tomas Pettersson, re-licensed under zlib by permission

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

   1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.

   2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

   3. This notice may not be removed or altered from any source
   distribution.

Libmodplug

The branch of libmodplug that is used in SoLoud was declared public domain. Authors include:

with some fixes modifications by Jari Komppa, to work with SoLoud.

RPGMaker Wrapper Generator

The RPGMaker wrapper generator contains code copied from the Ruby standard library. This is permitted by the rule 4 of the Ruby license:


Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.jp>.
You can redistribute it and/or modify it under either the terms of the
2-clause BSDL (see the file BSDL), or the conditions below:

  1. You may make and give away verbatim copies of the source form of the
     software without restriction, provided that you duplicate all of the
     original copyright notices and associated disclaimers.

  2. You may modify your copy of the software in any way, provided that
     you do at least ONE of the following:

       a) place your modifications in the Public Domain or otherwise
          make them Freely Available, such as by posting said
      modifications to Usenet or an equivalent medium, or by allowing
      the author to include your modifications in the software.

       b) use the modified software only within your corporation or
          organization.

       c) give non-standard binaries non-standard names, with
          instructions on where to get the original software distribution.

       d) make other distribution arrangements with the author.

  3. You may distribute the software in object code or binary form,
     provided that you do at least ONE of the following:

       a) distribute the binaries and library files of the software,
      together with instructions (in the manual page or equivalent)
      on where to get the original distribution.

       b) accompany the distribution with the machine-readable source of
      the software.

       c) give non-standard binaries non-standard names, with
          instructions on where to get the original software distribution.

       d) make other distribution arrangements with the author.

  4. You may modify and include the part of the software into any other
     software (possibly commercial).  But some files in the distribution
     are not written by the author, so that they are not under these terms.

     For the list of those files and their copying conditions, see the
     file LEGAL.

  5. The scripts and library files supplied as input to or produced as 
     output from the software do not automatically fall under the
     copyright of the software, but belong to whomever generated them, 
     and may be sold commercially, and may be aggregated with this
     software.

  6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
     IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     PURPOSE.

In any case, the RPGMaker wrapper does not claim to be Ruby or part of Ruby, and the wrapper generator and the wrapper itself is public and freely available, so that license should be covered many times over.

TED and SID support

The TED and SID soundchip emulation as well as tool to generate the register write dumps is based on tedplay (c) 2012 Attila Grosz, used under Unlicense:


This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.

In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.

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 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.

For more information, please refer to <http://unlicense.org/>

Copyright©2013-2015 Jari Komppa