summaryrefslogtreecommitdiffstats
path: root/media/libjpeg/LICENSE.md
diff options
context:
space:
mode:
Diffstat (limited to 'media/libjpeg/LICENSE.md')
-rw-r--r--media/libjpeg/LICENSE.md132
1 files changed, 132 insertions, 0 deletions
diff --git a/media/libjpeg/LICENSE.md b/media/libjpeg/LICENSE.md
new file mode 100644
index 0000000000..bf8a7fda7f
--- /dev/null
+++ b/media/libjpeg/LICENSE.md
@@ -0,0 +1,132 @@
+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)2009-2023 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.