LibJPEG-turbo, version 2.1.1

The Independent JPEG Group's JPEG software

Used in the qjpeg image plugin. Configure with -system-libjpeg or -no-libjpeg to avoid.

The sources can be found in qt5/qtbase/src/3rdparty/libjpeg.

Project Homepage, upstream version: 2.1.1

 Copyright (C) 2009-2021 D. R. Commander
 Copyright (C) 2015, 2020 Google, Inc.
 Copyright (C) 2019 Arm Limited
 Copyright (C) 2015-2016, 2018 Matthieu Darbois
 Copyright (C) 2011-2016 Siarhei Siamashka
 Copyright (C) 2015 Intel Corporation
 Copyright (C) 2013-2014 Linaro Limited
 Copyright (C) 2013-2014 MIPS Technologies, Inc.
 Copyright (C) 2009, 2012 Pierre Ossman for Cendio AB
 Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)
 Copyright (C) 1999-2006 MIYASAKA Masaru
 Copyright (C) 1991-2017 Thomas G. Lane, Guido Vollbeding

Independent JPEG Group License and BSD 3-Clause "New" or "Revised" License and zlib License.

 libjpeg-turbo Licenses
 ======================

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

 - The IJG (Independent JPEG Group) License, which is listed in
   [README.ijg](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, as
   well as the build system.

 - The [zlib License](https://opensource.org/licenses/Zlib)

   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:

     1.  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

     2.  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 License
         - Clause 2 of the zlib License

     3.  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:

     1.  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

     2.  If your binary distribution includes or uses the TurboJPEG API, then
         your product documentation must include the text of the Modified BSD
         License (see below.)

         **Origin**
         - Clause 2 of the Modified BSD License

 3.  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

 4.  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


 The Modified (3-clause) BSD License
 ===================================

 Copyright (C)2009-2021 D. R. Commander.  All Rights Reserved.<br>
 Copyright (C)2015 Viktor Szathmáry.  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.
 - Neither the name of the libjpeg-turbo Project 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 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.


 Why Three Licenses?
 ===================

 The zlib License could have been used instead of the Modified (3-clause) BSD
 License, and since the IJG License effectively subsumes the distribution
 conditions of the zlib License, this would have effectively placed
 libjpeg-turbo binary distributions under the IJG License.  However, the IJG
 License specifically refers to the Independent JPEG Group and does not extend
 attribution and endorsement protections to other entities.  Thus, it was
 desirable to choose a license that granted us the same protections for new code
 that were granted to the IJG for code derived from their software.

 The authors make NO WARRANTY or representation, either express or implied,
 with respect to this software, its quality, accuracy, merchantability, or
 fitness for a particular purpose.  This software is provided "AS IS", and you,
 its user, assume the entire risk as to its quality and accuracy.

 This software is copyright (C) 1991-2020, Thomas G. Lane, Guido Vollbeding.
 All Rights Reserved except as specified below.

 Permission is hereby granted to use, copy, modify, and distribute this
 software (or portions thereof) for any purpose, without fee, subject to these
 conditions:
 (1) If any part of the source code for this software is distributed, then this
 README file must be included, with this copyright and no-warranty notice
 unaltered; and any additions, deletions, or changes to the original files
 must be clearly indicated in accompanying documentation.
 (2) If only executable code is distributed, then the accompanying
 documentation must state that "this software is based in part on the work of
 the Independent JPEG Group".
 (3) Permission for use of this software is granted only if the user accepts
 full responsibility for any undesirable consequences; the authors accept
 NO LIABILITY for damages of any kind.

 These conditions apply to any software derived from or based on the IJG code,
 not just to the unmodified library.  If you use our work, you ought to
 acknowledge us.

 Permission is NOT granted for the use of any IJG author's name or company name
 in advertising or publicity relating to this software or products derived from
 it.  This software may be referred to only as "the Independent JPEG Group's
 software".

 We specifically permit and encourage the use of this software as the basis of
 commercial products, provided that all warranty or liability claims are
 assumed by the product vendor.

 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.

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The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation.
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