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/usr/share/doc/libgnuradio-video-sdl3.7.9/copyright is in libgnuradio-video-sdl3.7.9 3.7.9.1-2ubuntu1.

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The actual contents of the file can be viewed below.

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Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: gnuradio
Upstream-Contact: http://gnuradio.org/
Source:
 git archive --format=tar --prefix=gnuradio-3.7.9~rc1/  v3.7.9rc1  | xz > ../gnuradio_3.7.9~rc1.orig.tar.xz
Comment:
 Packages of versions 3.4 and up by A. Maitland Bottoms <bottoms@debian.org>,
 GNU Radio was re-packaged by Bdale Garbee <bdale@gag.com> to reflect
 upstream restructuring on Wed, 6 Sep 2006 16:02:03 -0600.  Much was
 learned and portions were taken from the previous Debian packages built
 by Ramakrishnan Muthukrishnan and Steinar H. Gunderson.
 .
 GNU Radio was downloaded from http://gnuradio.org/
 .
 Upstream Authors:
	Eric Blossom <eb@comsec.com>
	Matt Ettus <matt@ettus.com>
	Johnathan Corgan <jcorgan@corganenterprises.com>
 .
 See the AUTHORS file for a more complete list of contributors.
 The current upstream maintainer is Johnathan Corgan.
Copyright: 2001-2012 Free Software Foundation, Inc.
License: GPL-3+

Files: CMakeLists.txt README README.building-boost README.hacking
 cmake/* config.h.in docs/* dtools/* gnuradio-runtime/* gr-*/* grc/*
Copyright: 2010-2015 Free Software Foundation, Inc.
License: GPL-3+

Files: volk/*
Copyright: 2014-2015 Free Software Foundation, Inc.
License: GPL-3+
Comment: Unused embedded copy. Debian has separate volk packages.

Files: COPYING volk/COPYING
Copyright: 1989, 1991 Free Software Foundation, Inc.
License: COPYING
 Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.

Files: cmake/msvc/inttypes.h cmake/msvc/stdint.h
 volk/cmake/msvc/inttypes.h volk/cmake/msvc/stdint.h
Copyright: 2006-2008 Alexander Chemeris
License: BSD-3

Files: gr-vocoder/lib/g7xx/*
Copyright: 1992 Public Domain
License: public-domain
 This source code is released by Sun Microsystems, Inc. to the public
 domain.  Please give your acknowledgement in product literature if
 this code is used in your product implementation.
 .
 This source code is a product of Sun Microsystems, Inc. and is provided
 for unrestricted use.  Users may copy or modify this source code without
 charge.
 .
 SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
 THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 .
 Sun source code is provided with no support and without any obligation on
 the part of Sun Microsystems, Inc. to assist in its use, correction,
 modification or enhancement.
 .
 SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
 OR ANY PART THEREOF.
 .
 In no event will Sun Microsystems, Inc. be liable for any lost revenue
 or profits or other special, indirect and consequential damages, even if
 Sun has been advised of the possibility of such damages.
 .
 Sun Microsystems, Inc.
 2550 Garcia Avenue
 Mountain View, California  94043
 .
 Copyright year based on timestamps of files retrieved from
 http://web.archive.org/web/20060721140319/http://www.cwi.nl/ftp/audio/ccitt-adpcm.tar.gz

Files: gnuradio-runtime/lib/malloc16.c
Copyright: 2001 Phil Karn, KA9Q
License: GPL-3+

Files: gr-fec/lib/reed-solomon/*
Copyright: 2002, Phil Karn, KA9Q
License: GPL-3+

Files: gr-fec/lib/viterbi/*
Copyright: 1995 Phil Karn, KA9Q
 Copyright 2008 Free Software Foundation, Inc.
License: GPL-3+

Files: gr-vocoder/lib/gsm/*
Copyright: 1992, 1993, 1994 by Jutta Degener and Carsten Bormann, Technische Universitaet Berlin
Comment: MIT-like license
License: TUB

Files: gnuradio-runtime/include/gnuradio/thread/thread_group.h gnuradio-runtime/lib/thread/thread_group.cc
Copyright: (C) 2001-2003 William E. Kempf
 Copyright (C) 2007 Anthony Williams
 Copyright 2008 Free Software Foundation, Inc.
License: GPL-3+
Comment:
 The original was distributed under the Boost Software License,
 Version 1.0, but this derivative work is now covered by the overall
 license assertion for GNU Radio.

Files: gr-filter/lib/pm_remez.cc
Copyright: (c) 1995,1998  Jake Janovetz (janovetz@uiuc.edu)
 Copyright (c) 2004  Free Software Foundation, Inc.
License: GPL-3+
Comment:
 The original was distributed under LGPL version 2 or later, this
 derivative work is now covered by the overall license assertion
 for GNU Radio.

Files: gr-wxgui/python/wxgui/plot.py
Copyright: (C) 2002, 2007 Gordon Williams
License: GPL-3+
Comment:
 The original was licensed "Use as you wish", this derivative work
 is now covered by the overall license assertion for GNU Radio.

Files: gr-wxgui/python/wxgui/plotter/gltext.py
Copyright: (C) 2007 Christian Brugger, Stefan Hacker
License: GPL-3+
Comment:
 The original was distributed under GPL version 2 or later, this
 derivative work is now covered by the overall license assertion
 for GNU Radio.

Files: gnuradio-runtime/python/gnuradio/gr_xmlrunner.py
Copyright: 2006 Public Domain
License: public-domain
 Written by Sebastian Rittau <srittau@jroger.in-berlin.de> and placed in
 the Public Domain. With contributions by Paolo Borelli and others.
 Added to GNU Radio Oct. 3, 2010
 .
 Copyright year based upon blog post of the author:
 http://www.rittau.org/blog/20060714-01
 http://www.rittau.org/python/xmlrunner.py

Files: gr-vocoder/lib/codec2/*
Copyright: (C) 1990-2013 David Rowe
License: LGPL-2.1+

Files: gr-vocoder/lib/codec2/*kiss*
Copyright: 2003-2010, Mark Borgerding
License: KISS-BSD

Files: debian/*
Copyright: 2011-2013 A. Maitland Bottoms <bottoms@debian.org>
 Copyright 2011-2013 Free Software Foundation, Inc.
License: GPL-3+

Files: gr-fcd/*
Copyright: 2012 Free Software Foundation, Inc.
License: GPL-3+

Files: gr-fcd/lib/hid/*
Copyright: 2009 Alan Ott, Signal 11 Software
License: GPL-3

Files: gr-fcd/lib/fcd/*
Copyright: 2010  Howard Long, G6LVB
 Copyright 2011 Alexandru Csete, OZ9AEC ; Mario Lorenz, DL5MLO
License: GPL-3

License: TUB
 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

License: KISS-BSD
 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 DISCLAIM ED. 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 U SE,
 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.

License: BSD-3
 Copyright (c) 2006 Alexander Chemeris
 .
 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 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.

License: LGPL-2.1+
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License version 2.1, 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 more details.
 .
 On Debian systems, the complete text of the GNU Lesser General Public
 License (LGPL) version 2.1 can be found in the file
 '/usr/share/common-licenses/LGPL-2.1'.

License: GPL-3+
 GNU Radio 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 3, or (at your option)
 any later version.
 .
 GNU Radio 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.
 .
 On Debian systems, the complete text of the GNU General Public
 License (GPL) version 3 can be found in the file
 '/usr/share/common-licenses/LGPL-3'.

License: GPL-3
 GNU Radio 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 3, or (at your option)
 any later version.
 .
 GNU Radio 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.
 .
 On Debian systems, the complete text of the GNU General Public
 License (GPL) version 3 can be found in the file
 '/usr/share/common-licenses/LGPL-3'.