| Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic, | 
 |                     Jean-Marc Valin, Timothy B. Terriberry, | 
 |                     CSIRO, Gregory Maxwell, Mark Borgerding, | 
 |                     Erik de Castro Lopo | 
 |  | 
 | 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 Internet Society, IETF or IETF Trust, nor the | 
 | names of specific 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. | 
 |  | 
 | 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/ |