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
........

Merged revisions 351450 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

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, 58 insertions, 0 deletions

diff --git a/codecs/ilbc/createCB.h b/codecs/ilbc/createCB.h
new file mode 100644
index 000000000..eda547c66
--- /dev/null
+++ b/codecs/ilbc/createCB.h
@@ -0,0 +1,58 @@
+
+   /******************************************************************
+
+       iLBC Speech Coder ANSI-C Source Code
+
+       createCB.h
+
+       Copyright (C) The Internet Society (2004).
+       All Rights Reserved.
+
+   ******************************************************************/
+
+   #ifndef __iLBC_CREATECB_H
+   #define __iLBC_CREATECB_H
+
+   void filteredCBvecs(
+       float *cbvectors,   /* (o) Codebook vector for the
+                                  higher section */
+
+
+
+
+
+       float *mem,         /* (i) Buffer to create codebook
+                                  vectors from */
+       int lMem        /* (i) Length of buffer */
+   );
+
+   void searchAugmentedCB(
+       int low,        /* (i) Start index for the search */
+       int high,           /* (i) End index for the search */
+       int stage,          /* (i) Current stage */
+       int startIndex,     /* (i) CB index for the first
+                                  augmented vector */
+       float *target,      /* (i) Target vector for encoding */
+       float *buffer,      /* (i) Pointer to the end of the
+                                  buffer for augmented codebook
+                                  construction */
+       float *max_measure, /* (i/o) Currently maximum measure */
+       int *best_index,/* (o) Currently the best index */
+       float *gain,    /* (o) Currently the best gain */
+       float *energy,      /* (o) Energy of augmented
+                                  codebook vectors */
+       float *invenergy/* (o) Inv energy of aug codebook
+                                  vectors */
+   );
+
+   void createAugmentedVec(
+       int index,          /* (i) Index for the aug vector
+                                  to be created */
+       float *buffer,      /* (i) Pointer to the end of the
+                                  buffer for augmented codebook
+                                  construction */
+       float *cbVec    /* (o) The construced codebook vector */
+   );
+
+   #endif
+