Include iLBC source code for distribution with Asterisk

This patch includes the iLBC source code for distribution with Asterisk.
Clarification regarding the iLBC source code was provided by Google, and
the appropriate licenses have been included in the codecs/ilbc folder.

Review: https://reviewboard.asterisk.org/r/1675
Review: https://reviewboard.asterisk.org/r/1649

(closes issue: ASTERISK-18943)
Reporter: Leif Madsen
Tested by: Matt Jordan
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Merged revisions 351450 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 351451 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@351452 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 55 insertions, 0 deletions

diff --git a/codecs/ilbc/LICENSE_ADDENDUM b/codecs/ilbc/LICENSE_ADDENDUM
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+
+INTRODUCTION
+Google Inc. acquired Global IP Solutions, Inc. (GIPS) in 2011, and GIPS is now
+a subsidiary of Google. Google Inc. and its subsidiaries and affiliates
+("Google") would like to update and clarify their position with respect to any
+patents and patent applications it may own that cover the iLBC (internet low
+bit-rate) codec technology that is the subject of IETF RFC 3951 and RFC 3952.
+This notice is provided in accordance with RFC 3979 and RFC 4879 covering IPR
+in the IETF.
+
+DECLARATION
+
+"iLBC Specification" means IETF RFC 3951 and RFC 3952.
+
+Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge,
+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 implementations of the iLBC Specification, where such license
+applies only to those patent claims, both currently owned by Google and
+acquired in the future, licensable by Google that must necessarily be
+infringed because of what is specifically required by the normative portions
+of the iLBC Specification. This license is offered on the condition that
+you grant a reciprocal license under the same terms as this license to all
+parties for implementations of the iLBC Specification under those patent
+claims, both currently owned by you and acquired in the future, licensable
+by you that must necessarily be infringed because of what is specifically
+required by the normative portions of the iLBC Specification. 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 any implementation of the iLBC
+Specification constitutes direct or contributory patent infringement, or
+inducement of patent infringement, then any patent rights granted to you
+under this license shall terminate as of the date such litigation is filed.
+
+In addition to the license above relating to what is required by the
+specification, the following license relating to the reference implementation
+is offered.
+
+"The iLBC reference implementation" means the c-code reference implementation
+in Appendix A of IETF RFC 3951.
+
+Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge,
+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 iLBC reference implementation, 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 the iLBC
+reference implementation. This grant does not include claims that would be
+infringed only as a consequence of further modification of the iLBC reference
+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 the iLBC reference
+implementation constitutes direct or contributory patent infringement, or
+inducement of patent infringement, then any patent rights granted to you
+under this License shall terminate as of the date such litigation is filed.