Linphone Third party components

Last modified by Mickaël Turnel on 2023/07/12 10:01

Notice regarding licenses of third-party components used in Linphone and Liblinphone

Contents

Introduction
Building Linphone/Liblinphone for proprietary distribution
Dependencies by project

Revision history
V 1.0 - December 7th, 2011	Initial Revision
V 1.1 May 11th 2012	ADD G729
V 1.2 September 27th 2012	iOS licenses
V 2.0 June 21th, 2013	Updated for new version of Linphone based on belle-sip.
v 2.1 February 2014	add WEBRTC AECM/VisualOn AMR-WB
v 2.2 June 2014	add openH264, bzrtp
v 2.3 December 2014	fix mistake in VP8 description.
v2.4 February 2015	WP8 third parties added
v2.5 February 2016	add mbedTLS and information about build option to build without gpl third party
V2.6 November 2016	Add shaderUtil
V2.7 Febrary 2017	Migration to wiki page
v2.8 February 2019	Added linphone-android 4.1 release third-party licenses
v2.9 September 2020	Added LibYuv
v2.10 April 2021	Added OpenLDAP
v2.11 September 2022	Added ZXing
v2.12 November 2022	Added PQCE and libOQS
v2.13 December 2022	Added QtKeychain
v2.14 May 2023	Added iOS & updated Android

Introduction

Linphone and Liblinphone make use of third party open-source software components. These components are not covered by the commercial licensing agreement proposed by Belledonne Communications. However their open-source licenses are compatible with proprietary distribution, provided that some conditions are met.

This document lists and describes these open-source components and their respective licenses.

This documentation is informative and intends to help distributors of linphone-based software to make their distribution, documentation and end-user license agreement compliant with the requirements of these open-source components.

It also informs about other legal aspects of certain algorithms implemented by these third party, for example concerning encryption techniques and software patents.

Remarks:

Mediastreamer2, oRTP, belle-sip and bctoolbox components are the property of Belledonne Communications and thus fall into the scope the commercial licensing. They are the main dependencies of liblinphone.
PolarSSL is the SSL/TLS library used by Linphone for all encryption features. Licensing for it is included in the commercial licensing proposed by Belledonne Communications. MbedTLS library is the continuation of the PolarSSL project, and is replacing PolarSSL in newest versions of Linphone. MbedTLS is covered by an Apache license compatible with proprietary distribution.
Encryption algorithms are considered as weapons by certain countries, (typically USA and France). Legal paperwork from US and France government agencies are required to export or import software using encryption. Apple requires these declarations during the process of submission of an application to Appstore.
Translation files (*.ts) of the desktop versions are excluded of commercial licensing and thus must not be used or distributed by customers.

Building Linphone/Liblinphone for proprietary distribution

The Linphone architecture can optionally include third party software covered by GPL license, that must in any case never be included in a proprietary application.

In order to avoid any confusion, the build scripts have an option called “no gpl third party”, that automatically disables any GPL third party from the build process.

For all cmake based build procedures it is achieved by adding the build option ENABLE_GPL_THIRD_PARTIES=OFF, for instance:

cmake .. -DENABLE_GPL_THIRD_PARTIES=OFF

Dependencies by project

bctoolbox dependencies

General purpose tooling libraries used by oRTP, belle-sip, mediastremer2, bzrtp and liblinphone and Linphone

mbedTLS 2.x

Description

MbedTLS is an encryption toolbox and SSL/TLS implementation. It was formely known as polarSSL.

https://github.com/Mbed-TLS/mbedtls

License

MbedTLS is covered by an Apache 2.0 license.

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

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decaf

Description

Implementation of ECDH and EdDSA on curver 25519 and 448.

https://sourceforge.net/projects/ed448goldilocks/

License

decaf is distributed under MIT license:

under a BSD license as described in python/edgold/ed448.py

Certain sections of code are public domain or CC0, as marked.

Earlier versions of this project used small amounts of code which were

but I believe that all of this code has now been replaced.

The bulk of this library is

and licensed under the following MIT license.

The MIT License (MIT)

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.

belle-sip dependencies

bctoolbox

antlr3c

Description

Antlr3c runtime is used for parsing text protocol messages (mainly SIP and SDP).

http://www.antlr.org/wiki/display/ANTLR3/Using+the+ANTLR3+C+Target

Used by Liblinphone.

License

[The "BSD licence"]
Copyright (c) 2005-2009 Jim Idle, Temporal Wave LLC
http://www.temporal-wave.com//
http://www.linkedin.com/in/jimidle

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
   - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
   - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
   - The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Zlib

Compression library

License

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:

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.
Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
This notice may not be removed or altered from any source distribution

oRTP dependencies

oRTP is a library implemeting Real-time Transport Protocol (RFC 3550)

bctoolbox

base64.c

Implementation file for the b64 encoding

http://synesis.com.au/software/

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
   - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
   - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
   - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Post Quantum Crypto Engine(PQCE) dependencies

This library implements hybrid post quantum KEM mixing ECDH and PQ KEM

License

PQCE is distributed under the GNU GPLv2, proprietary licenses can be purchased from Belledonne Communications for use within closed-source applications.

PQCE is not covered by the liblinphone/linphone license and should be purchased separately

Dependencies

bctoolbox

libOQS

libOQS provides a collection of open source implementations of quantum-safe key encapsulation mechanism (KEM).

License

liboqs is licensed under the MIT License, it includes third party libraries distributed under other licences (mostly public domain). See details here.

bZRTP dependencies

Description

ZRTP is is peer to peer protocol to exchange cryptographic keys in purpose of establishing secure RTP streams using SRTP.

bZRTP is Belledonne Communications implementation of ZRTP specification (RFC6189). bZRTP implement an additional mode, not described in the RFC6189, to support Post Quantum Cryptography.

Used by mediastreamer2.

License

Dual licensed: GPLv2 or proprietary license. The Linphone or Liblinphone license includes bZRTP.

Dependencies

bctoolbox

when enabling the PostQuantum algorithm, bZRTP also depends on

PostQuantumCryptoEngine

Mediastreamer2 dependencies

bctoolbox

oRTP

bZRTP

libSRTP

Description

Liblinphone make use of libsrtp for secure RTP (RFC3711) implementation. This dependency is optional, it can be dropped at build time configuration.

http://srtp.sourceforge.net/srtp.html

License

This library is available with a BSD license.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Other legal aspects

Some legal declarations from US and France government agencies are required to export or import software using encryption. Apple requires these declaration during the process of submission of an application to Appstore.

sRTP uses AES 256bit encryption.

Speex

Description

Mediastreamer2 make use of speex for speex encoding & decoding, software echo cancellation, audio resampling.

http://www.speex.org

License

Speex is licensed under BSD license.

Copyright 2002-2008 Xiph.org Foundation
Copyright 2002-2008 Jean-Marc Valin
Copyright 2005-2007 Analog Devices Inc.
Copyright 2005-2008 Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Copyright 1993, 2002, 2006 David Rowe
Copyright 2003 EpicGames
Copyright 1992-1994 Jutta Degener, Carsten Bormann

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Royalties

Free of charge and free of patents.

GSM codec library

Description

Liblinphone use this library to perform GSM6.10 encoding and decoding.

License

Any use of this software is permitted provided that this notice is not removed and that neither the authors nor the Technische Universitaet Berlin are deemed to have made any representations as to the suitability of this software for any purpose nor are held responsible for any defects of this software.

THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.

As a matter of courtesy, the authors request to be informed about uses this software has found, about bugs in this software, and about any improvements that may be of general interest.

   Berlin, 28.11.1994
   Jutta Degener
   Carsten Bormann

oOo

Since the original terms of 15 years ago maybe do not make our intentions completely clear given today's refined usage of the legal terms, we append this additional permission:

Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that this notice is not removed and that neither the authors nor the Technische Universitaet Berlin are deemed to have made any representations as to the suitability of this software for any purpose nor are held responsible for any defects of this software.

THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.

   Berkeley/Bremen, 05.04.2009
   Jutta Degener
   Carsten Bormann

Royalties

No one seems claiming patent royalties for this codec (old technology).

ISAC codec

Description

The use of ISAC is optional - it is a plugin that may or may not be compiled into or loaded by the application.

Liblinphone uses this library for ISAC encoding and decoding.

http://www.webrtc.org/

License

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

For more information, please see http://www.webrtc.org

Royalties

Google claims no royalty concerning this codec.

ILBC codec

Description

The use of ILBC is optional - it is a plugin that may or may not be compiled into or loaded by the application.

Liblinphone uses the ilbc implementation from Webrtc project, for ILBC encoding and decoding.

ILBC is defined in IETF RFC3951.

http://www.webrtc.org/

License

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

For more information, please see http://www.webrtc.org

Royalties

Google claims no royalty concerning this codec.

WEBRTC AEC and VAD

Description

The Webrtc Acoustic Echo Canceller for mobile (AECm) is used as a fall back on Android platform in case a builtin echo canceller is not available.

The Webrtc AEC is used on Mac, Linux, and Windows as hardware echo cancellation is generally not available on these platforms.

The Voice Activity Detector (VAD) from webRTC is also wrapped into mediastreamer2.

All components taken from webRTC and brought to mediastreamer2 library are all included in the libmswebrtc .so/.dll/.dylib file, as a mediastreamer2 plugin.

http://www.webrtc.org/

License

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

For more information, please see http://www.webrtc.org

Royalties

Google claims no royalty concerning these algorithms.

Kiss_fft

Description

Kiss_fft is small-footprint C implementation of Fast Fourier Transform. It is used in mediastreamer2 by the MSEqualizer filter, a programmable sound equalizer, which is sometimes needed to rectify bad frequency responses from speakers or microphone. It has a BSD license, as follows.

License

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Opencore-amr Codec

Description

It is used by liblinphone for AMR audio encoding and decoding.

It is optional - it is a plugin that may or may not be compiled into or loaded by the application.

License

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

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Definitions.

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"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means information the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.

"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.

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"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship.
For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.

"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.

2. Grant of Copyright License.

Subject to the terms and conditions of this
License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.

3. Grant of Patent License.

Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted.
If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.

4. Redistribution.

You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
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   - You must cause any modified files to carry prominent notices stating that You changed the files; and
   -   You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
   - If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.

5. Submission of Contributions.

Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.

6. Trademarks.

7. Disclaimer of Warranty.

Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.

8. Limitation of Liability.

9. Accepting Warranty or Additional Liability.

While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in
accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.

END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.

You may obtain a copy of the License at:
http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Royalties

The use of AMR algorithms is subject to patents. VoiceAge claims royalties for this codec (http://www.voiceage.com/amr_licterms.php).

VisualOn AMR-WB Codec

Description

It is used by liblinphone for AMR-WB (G722.2) audio encoding.

It is optional - it is a plugin that may or may not be compiled into or loaded by the application.

License

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

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While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.

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APPENDIX: How to apply the Apache License to your work

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Royalties

The use of AMR-WB algorithms is subject to patents. VoiceAge claims royalties for this codec (http://www.voiceage.com/AMR-WB.G.722.2.html).

SILK codec

Description

SILK is a multi sample rate and variable bitrate audio codec by Skype Limited.

Mediastreamer2 make use of the SILK SDK provided by Skype for encoding and decoding of the SILK format. It is optional, in the form of a plugin that may or may not be compiled into or loaded by the application.

License

SILK is distributed under a BSD like license, but Skype Ltd owns patents over the implemented algorithms. Skype Ltd grants users of SILK codec SDK a royalty free license to use the software, provided that customer registers to Skype Ltd and accepts the SILK patent license.

See https://www.skype.com/en/legal/developer-tou/silk-license/ for more details.

Redistribution and use in source and binary forms, with or without modification, (subject to the limitations in the disclaimer below) are permitted provided that the following conditions are met:
   - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
   - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
   - Neither the name of Skype Limited, nor the names of specific contributors, may be used to endorse or promote products derived from this software without specific prior written permission.

NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Royalties

None, see https://www.skype.com/en/legal/developer-tou/silk-license/ .

G 729 codec

Description

G 729 is a 8 khz, 8 kbits/s low latency ITU speech codec widely used in the telecommunication world. Mediastremer2 make use of the bcg729, an opensource implementation from Belledonne Communications. It is optional, in the form of a plugin that may or may not be compiled into or loaded by the application.

https://linphone.org/technical-corner/bcg729

License

Bcg729 is distributed under the GNU GPLv2, proprietary licenses can be purchased from Belledonne Communications for use within closed-source applications.

bcg729 is not covered by the liblinphone/linphone license and should be purchased separately.

Copyright (C) 2011 Belledonne Communications, Grenoble, France
Author : Johan Pascal

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

Royalties

G.729 patent expired in 2016, see http://www.sipro.com/G729.html.

OPUS codec

Description

From rfc6716: “Opus is designed to handle a wide range of interactive audio applications, including Voice over IP, videoconferencing, in-game chat, and even live, distributed music performances. It scales from low bitrate narrowband speech at 6 kbit/s to very high quality stereo music at 510 kbit/s. Opus uses both Linear Prediction (LP) and the Modified Discrete Cosine Transform (MDCT) to achieve good compression of both speech and music.”

http://www.opus-codec.org

Used by liblinphone, mediastreamer2.

License

OPUS source code is distributed under BSD license

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Royalties

Opus is subject to the royalty-free patent licenses which are specified at:

Xiph.Org Foundation: https://datatracker.ietf.org/ipr/1524/

Microsoft Corporation: https://datatracker.ietf.org/ipr/1914/

Broadcom Corporation: https://datatracker.ietf.org/ipr/1526/

libvpx (VP8 video codec)

Description

VP8 is a high quality open source and royalty free video codec offered by Google.

http://www.webmproject.org/

Liblinphone make use of it for video functionality.

Used by liblinphone, mediastreamer2.

License

It is a BSD style license.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Royalties

Google claims no patent royalties on the codec, as stated in the “PATENTS” file of the source code.

Additional IP Rights Grant (Patents)

"This implementation" means the copyrightable works distributed by

Google as part of the WebM Project.

Additional IP Rights Grant (Patents)

"This implementation" means the copyrightable works distributed by Google as part of the WebM Project.

Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, transfer, and otherwise run, modify and propagate the contents of this implementation of VP8, where such license applies only to those patent claims, both currently owned by Google and acquired in the future, licensable by Google that are necessarily infringed by this implementation of VP8. This grant does not include claims that would be infringed only as a consequence of further modification of this implementation.

If you or your agent or exclusive licensee institute or order or agree to the institution of patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that this implementation of VP8 or any code incorporated within this implementation of VP8 constitutes direct or contributory patent infringement, or inducement of patent infringement, then any patent rights granted to you under this License for this implementation of VP8 shall terminate as of the date such litigation is filed.

FFMPEG libraries

Description

Linphone makes use of ffmpeg libraries (libavcodec, libavutil, libswscale) for:

- encoding and decoding of H263 and mpeg4 video

- optionally decoding of H264, if OpenH264 plugin is not used.

- image rescaling, for desktop versions only.

http://www.ffmpeg.org

Used by liblinphone, mediastreamer2.

License

FFMPEG can be licensed either under the GPL or LGPL depending on configuration at build-time, however in context of usage by liblinphone, only the LGPL flavor is compiled and used.

These libraries must not be used on iOS because of the requirements of their license cannot be fulfilled. Indeed there is no shared library support on iOS.

The main requirement of the LGPL license is the possibility for the end-user to replace the LGPL libraries by other versions of these libraries. This implies the use of dynamic libraries and that source code of the library is available.

FFMPEG authors are suggesting a check list to clear the usage of their libraries in proprietary applications, see http://ffmpeg.org/legal.html

GNU LESSER GENERAL PUBLIC LICENSE
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13. The Free Software Foundation may publish revised and/or new versions of the Lesser General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the Library specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Library does not specify a license version number, you may choose any version ever published by the Free Software Foundation.

14. If you wish to incorporate parts of the Library into other free programs whose distribution conditions are incompatible with these, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally.

NO WARRANTY

15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

END OF TERMS AND CONDITIONS

X264 (H264 encoder)

Description

Linphone used X264 for H264 video encoding.

It is optional and legacy, in the form of a plugin.

http://www.videolan.org/developers/x264.html

http://x264licensing.com/

Used by liblinphone, mediastreamer2.

License

X264 is dual licensed: GPL or commercial licensing. The commercial license of linphone does NOT include commercial licensing of X264.

Even if Client purchases a proprietary license from x264 authors, Belledonne Communications discourage the inclusion x264 software. H264 codec support is now provided by a plugin based on OpenH264.

Royalties

MPEG-LA (http://www.mpegla.com) claims patent royalties for H264 algorithms.

ShaderUtil

Description

The shaderUtil.c file is used to compile shaders in order to display video in Linphone.

https://developer.apple.com/library/content/samplecode/GLPaint/Listings/Classes_UtilSrc_shaderUtil_c.html#//apple_ref/doc/uid/DTS40007328-Classes_UtilSrc_shaderUtil_c-DontLinkElementID_14

Used by Mediastreamer2.

License

Abstract: Functions that compile, link and validate shader programs.
Version: 1.13

Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc. ("Apple") in consideration of your agreement to the following terms, and your use, installation, modification or redistribution of this Apple software constitutes acceptance of these terms. If you do not agree with these terms, please do not use, install, modify or redistribute this Apple software.

In consideration of your agreement to abide by the following terms, and subject to these terms, Apple grants you a personal, non-exclusive license, under Apple's copyrights in this original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the Apple Software, with or without modifications, in source and/or binary forms; provided that if you redistribute the Apple Software in its entirety and without modifications, you must retain this notice and the following text and disclaimers in all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or logos of Apple Inc. may be used to endorse or promote products derived from the Apple Software without specific prior written permission from Apple.
Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by Apple herein, including but not limited to any patent rights that may be infringed by your derivative works or by other works in which the Apple Software may be incorporated.

The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Copyright (C) 2014 Apple Inc. All Rights Reserved.

OpenH264 (H264 encoder and decoder)

Description

Linphone uses OpenH264 for H264 video encoding and decoding. OpenH264 is the open-source implementation of H264 specification made by Cisco. Its license allows usage within a proprietary application.

It is optional, in the form of a plugin.

http://www.openh264.org/

License

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Royalties

MPEG-LA (http://www.mpegla.com) claims patent royalties for H264 algorithms.

% dir="ltr" %)

LibJpeg-Turbo

Description

The LibJpeg-Turbo is used to compress and decompress Jpeg image in Mediastreamer2

https://github.com/libjpeg-turbo/libjpeg-turbo

License

libjpeg-turbo is covered by three compatible BSD-style open source licenses:

The IJG (Independent JPEG Group) License, which is listed in README.ijg
This license applies to the libjpeg API library and associated programs (any code inherited from libjpeg, and any modifications to that code.)
The Modified (3-clause) BSD License, which is listed below
This license covers the TurboJPEG API library and associated programs.
The zlib License, which is listed below
This license is a subset of the other two, and it covers the libjpeg-turbo SIMD extensions.

Complying with the libjpeg-turbo Licenses

This section provides a roll-up of the libjpeg-turbo licensing terms, to the best of our understanding.

1) If you are distributing a modified version of the libjpeg-turbo source, then:

You cannot alter or remove any existing copyright or license notices from the source.
- Origin:
  - Clause 1 of the IJG License
  - Clause 1 of the Modified BSD License
  - Clauses 1 and 3 of the zlib License
You must add your own copyright notice to the header of each source file you modified, so others can tell that you modified that file (if there is not an existing copyright header in that file, then you can simply add a notice stating that you modified the file.)
- Origin
  - Clause 1 of the IJG LicenseClause 2 of the zlib License
You must include the IJG README file, and you must not alter any of the copyright or license text in that file.
- Origin
  - Clause 1 of the IJG License

2) If you are distributing only libjpeg-turbo binaries without the source, or if you are distributing an application that statically links with libjpeg-turbo, then:

Your product documentation must include a message stating: This software is based in part on the work of the Independent JPEG Group.
- Origin
  - Clause 2 of the IJG license

3) If your binary distribution includes or uses the TurboJPEG API, then:

your product documentation must include the text of the Modified BSD License.
- Origin
  - Clause 2 of the Modified BSD License

You cannot use the name of the IJG or The libjpeg-turbo Project or the contributors thereof in advertising, publicity, etc.
- Origin
  - IJG License
  - Clause 3 of the Modified BSD License

The IJG and The libjpeg-turbo Project do not warrant libjpeg-turbo to be free of defects, nor do we accept any liability for undesirable consequences resulting from your use of the software.
- Origin
  - IJG License
  - Modified BSD License
  - zlib License

macsnd.c

Description

Macosx sound backend

The audio queue sound backend was contributed by Hiroki Mori under a BSD license.

License

THIS SOFTWARE IS PROVIDED BY <copyright holder> ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THI SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LibYuv

Description

libyuv is an open source project that includes YUV scaling and conversion functionality.

https://chromium.googlesource.com/libyuv/libyuv/

Mediastreamer2 make use of it for image conversion.

License

It is a BSD style license.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
  * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the    distribution.
  * Neither the name of Google nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

ANGLE

Description

ANGLE allows OpenGL ES applications to be run seamlessly on multiple platforms by translating to available hardware-supported APIs.

https://chromium.googlesource.com/angle/angle/

Mediastreamer2 make use of it for create OpenGL Surface on Windows

License

It is a BSD style license.

BSD License

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of TransGaming Inc., Google Inc., 3DLabs Inc. Ltd., Microsoft Corporation, nor the names of their contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Khronos - OpenGL-Registry

Description

Khronos-OpenGL-Registry allows the use of OpenGL API.

https://github.com/KhronosGroup/OpenGL-Registry/

Mediastreamer2 make use of it for displaying videos.

License

It is a BSD style license.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or associated documentation files (the "Materials"), to deal in the Materials without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials, and to permit persons to whom the Materials are 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 Materials.

THE MATERIALS ARE 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 MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

ZXing-cpp

Description

ZXing-C++ a("zebra crossing") is an open-source, multi-format linear/matrix barcode image processing library implemented in C++.

https://github.com/zxing-cpp/zxing-cpp

Mediastreamer2 and Liblinphone make use of it for reading and generating QRCodes.

License

It is a Apache 2.0 license.

Copyright 2007–2022 ZXing

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

Aom

Description

aom ("Alliance for Open Media") is an open source, av1 encoder and decoder.

https://aomedia.googlesource.com/aom/

Mediastreamer2 uses the provided encoder.

License

Copyright (c) 2016, Alliance for Open Media. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in
   the documentation and/or other materials provided with the
   distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

dav1d

Description

dav1d is an AV1 cross-platform decoder, open-source, and focused on speed and correctness.

https://code.videolan.org/videolan/dav1d

Mediastreamer2 uses the provided decoder.

License

Copyright © 2018-2019, VideoLAN and dav1d authors
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Obuparse

Description

A simple and portable single file AV1 OBU parser written in mostly C89 with a tiny bit of C99, with a permissive license.

https://github.com/dwbuiten/obuparse

Mediasteamer2 uses it to parse OBUs when needed.

License

Copyright (c) 2020, Derek Buitenhuis

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

liblinphone dependencies

jsoncpp

Description

JsonCpp is a C++ library that allows manipulating JSON values, including serialization and deserialization to and from strings. It can also preserve existing comment in unserialization/serialization steps, making it a convenient format to store user input files.

https://github.com/open-source-parsers/jsoncpp

Used by Liblinphone.

License

https://github.com/open-source-parsers/jsoncpp/blob/master/LICENSE

libxml2

Description

The libxml2 is full xml parser library. It is used by liblinphone for all xml related tasks.

http://www.xmlsoft.org/

Used by Liblinphone.

License

Except where otherwise noted in the source code (e.g. the files hash.c, list.c and the trio files, which are covered by a similar licence but with different Copyright notices) all the files are:

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 DANIEL VEILLARD 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.

libxsd

Description

XML Schema Datatypes (XSD) library. Libxsd is a code generator, to create object-oriented APIs to parse and serialize XML dialects according to their defined schema. The generated code includes libxsd header files.

https://www.codesynthesis.com/projects/

Used by Liblinphone.

License

libxsd is covered by a GNU General Public License version 2.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

In addition, as a special exception, Code Synthesis Tools CC gives permission to link this program with the Xerces-C++ library (or with modified versions of Xerces-C++ that use the same license as Xerces-C++), and distribute linked combinations including the two. You must obey the GNU General Public License version 2 in all respects for all of the code used other than Xerces-C++. If you modify this copy of the program, you may extend this exception to your version of the program, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

In addition, Code Synthesis Tools CC makes a special exception for the Free/Libre and Open Source Software (FLOSS) which is described in the accompanying FLOSSE file.

Commercial licensing

Belledonne Communications acquired a libxsd commercial licence from Code Synthesis compatible with Belledonne Communications' commercial licences for Linphone and Liblinphone, so that there cannot be any GPLv2 infringement for companies having purchased a commercial licence from Belledonne Communications.

However, running libxsd's code generator to create or modify generated code is NOT permitted under the commercial licence; only Belledonne Communications engineers are entitled to do this. Customers who would require to do this shall get in business directly with Code Synthesis in order to acquire a libxsd licence, or publish the entire software incorporating such new libxsd generated code under GPLv2.

soci

Description

SOCI is a database access library for C++ that makes the illusion of embedding SQL queries in the regular C++ code, staying entirely within the Standard C++.

http://soci.sourceforge.net/

Used by Liblinphone.

License

soci is covered by a Boost 1.0 license.

Boost Software License - Version 1.0 - August 17th, 2003

Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the software and accompanying documentation covered by this license (the "Software") to use, reproduce, display, distribute, execute, and transmit the Software, and to prepare derivative works of the Software, and to permit third-parties to whom the Software is furnished to do so, all subject to the following:

The copyright notices in the Software and this entire statement, including the above license grant, this restriction and the following disclaimer, must be included in all copies of the Software, in whole or in part, and all derivative works of the Software, unless such copies or derivative works are solely in the form of machine-executable object code generated by a source language processor.

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, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

Xerces-C

Description

Xerces-C is a validating XML parser.

http://xerces.apache.org/xerces-c/

Used by Liblinphone.

License

xerces-c is covered by an Apache 2.0 license.

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

Definitions.

"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.

"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.

"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.

"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.

"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.

2. Grant of Copyright License.

3. Grant of Patent License.

4. Redistribution.

(a) You must give any other recipients of the Work or Derivative Works a copy of this License; and

(b) You must cause any modified files to carry prominent notices stating that You changed the files; and

5. Submission of Contributions.

6. Trademarks.

7. Disclaimer of Warranty.

8. Limitation of Liability.

9. Accepting Warranty or Additional Liability.

END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.

You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0

See the License for the specific language governing permissions and limitations under the License.

The zlib License

Compression library.

License

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:

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.
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.

Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

Definitions.

"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.

"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.

"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.

"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.

"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.

2. Grant of Copyright License.

3. Grant of Patent License.

4. Redistribution.

(a) You must give any other recipients of the Work or Derivative Works a copy of this License; and

(b) You must cause any modified files to carry prominent notices stating that You changed the files; and

5. Submission of Contributions.

6. Trademarks.

7. Disclaimer of Warranty.

8. Limitation of Liability.

9. Accepting Warranty or Additional Liability.

END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.

You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0

See the License for the specific language governing permissions and limitations under the License.

OpenLDAP

Description

OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol. It is used by Liblinphone to search contacts on LDAP servers.

License

Redistribution and use in source and binary forms, with or without modification, are permitted only as authorized by the OpenLDAP Public License.

A copy of this license is available in the file LICENSE in the top-level directory of the distribution or, alternatively, at <http://www.OpenLDAP.org/license.html>.

OpenLDAP is a registered trademark of the OpenLDAP Foundation.

Individual files and/or contributed packages may be copyright by other parties and/or subject to additional restrictions.

This work is derived from the University of Michigan LDAP v3.3 distribution. Information concerning this software is available at
<http://www.umich.edu/~dirsvcs/ldap/ldap.html>.

This work also contains materials derived from public sources.

Additional information about OpenLDAP can be obtained at <http://www.openldap.org/>.

---

Redistribution and use in source and binary forms, with or without modification, are permitted only as authorized by the OpenLDAP Public License.

---

Portions Copyright 1999-2008 Howard Y.H. Chu.
Portions Copyright 1999-2008 Symas Corporation.
Portions Copyright 1998-2003 Hallvard B. Furuseth.
Portions Copyright 2007-2011 Gavin Henry.
Portions Copyright 2007-2011 Suretec Systems Ltd.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that this notice is preserved.
The names of the copyright holders may not be used to endorse or promote products derived from this software without their specific prior written permission.
This software is provided ``as is'' without express or implied warranty.

---

Redistribution and use in source and binary forms are permitted provided that this notice is preserved and that due credit is given to the University of Michigan at Ann Arbor.
The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission.
This software is provided ``as is'' without express or implied warranty.

Linphone-desktop dependencies

minizip

Description

Decompression Bzip2 file library. Removed since version 4.2

License

Condition of use and distribution are the same as zlib:

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:

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.

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

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

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

libbsd

Removed since version 4.2

Minizip has a dependency on libbsd on Linux. This library provides useful functions commonly found on BSD systems, and lacking on others like GNU systems.

License

The licenses for the code contained in libbsd are quite permissive to make it easier for other projects to use it. Most of the licenses are either New BSD, MIT style or ISC, check the source code for the actual license details.

QtKeychain

Description

QtKeychain is a Qt API to store passwords and other secret data securely.

License

QtKeychain is available under the Modified BSD License.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to
   endorse or promote products derived from this software without
   specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.