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/gainquant.h

@@ -0,0 +1,31 @@
+   
+   /******************************************************************
+   
+       iLBC Speech Coder ANSI-C Source Code
+   
+       gainquant.h                                         
+   
+       Copyright (C) The Internet Society (2004). 
+       All Rights Reserved.
+   
+   ******************************************************************/
+   
+   #ifndef __iLBC_GAINQUANT_H
+   #define __iLBC_GAINQUANT_H
+   
+   float gainquant(/* (o) quantized gain value */
+       float in,       /* (i) gain value */
+       float maxIn,/* (i) maximum of gain value */
+       int cblen,      /* (i) number of quantization indices */
+       int *index      /* (o) quantization index */
+   );
+   
+   float gaindequant(  /* (o) quantized gain value */
+       int index,      /* (i) quantization index */
+       float maxIn,/* (i) maximum of unquantized gain */
+       int cblen       /* (i) number of quantization indices */
+   );
+   
+   #endif
+   
+