initial bits of ilbc codec mod.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@452 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/codec/ilbc/src/lsf.h

@@ -0,0 +1,30 @@
+   
+   /******************************************************************
+   
+       iLBC Speech Coder ANSI-C Source Code
+   
+       lsf.h             
+   
+       Copyright (C) The Internet Society (2004). 
+       All Rights Reserved.
+   
+   
+   
+   ******************************************************************/
+   
+   #ifndef __iLBC_LSF_H
+   #define __iLBC_LSF_H
+   
+   void a2lsf( 
+       float *freq,/* (o) lsf coefficients */
+       float *a    /* (i) lpc coefficients */
+   );
+   
+   void lsf2a( 
+       float *a_coef,  /* (o) lpc coefficients */
+       float *freq     /* (i) lsf coefficients */
+   );
+   
+   #endif
+   
+