Add iLBC codec

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@852 65c4cc65-6c06-0410-ace0-fbb531ad65f3

codecs/ilbc/gainquant.h

@@ -0,0 +1,32 @@
+ 
+/****************************************************************** 
+ 
+    iLBC Speech Coder ANSI-C Source Code 
+ 
+    gainquant.h                                          
+ 
+    Copyright (c) 2001, 
+    Global IP Sound AB. 
+    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 
+ 
+