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diff --git a/codecs/ilbc/iLBC_define.h b/codecs/ilbc/iLBC_define.h
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+++ b/codecs/ilbc/iLBC_define.h
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+ 
+/****************************************************************** 
+ 
+    iLBC Speech Coder ANSI-C Source Code 
+ 
+    iLBC_define.h     
+ 
+    Copyright (c) 2001, 
+    Global IP Sound AB. 
+    All rights reserved. 
+ 
+******************************************************************/ 
+#include <string.h> 
+ 
+#ifndef __iLBC_ILBCDEFINE_H 
+#define __iLBC_ILBCDEFINE_H 
+ 
+/* general codec settings */ 
+ 
+#define FS (float)8000.0 
+#define BLOCKL 240 
+#define NSUB 6  
+#define NASUB 4  
+#define SUBL 40 
+#define STATE_LEN 80 
+#define STATE_SHORT_LEN 58 
+ 
+/* LPC settings */ 
+ 
+#define LPC_FILTERORDER 10 
+#define LPC_CHIRP_SYNTDENUM (float)0.9025 
+#define LPC_CHIRP_WEIGHTDENUM (float)0.4222 
+#define LPC_LOOKBACK 60 
+#define LPC_N 2 
+#define LPC_ASYMDIFF 20 
+#define LPC_BW (float)60.0 
+#define LPC_WN (float)1.0001 
+#define LSF_NSPLIT 3 
+#define LSF_NUMBER_OF_STEPS 4 
+#define LPC_HALFORDER LPC_FILTERORDER/2 
+ 
+/* cb settings */ 
+ 
+#define CB_NSTAGES 3 
+#define CB_EXPAND 2 
+#define CB_MEML 147 
+#define CB_FILTERLEN 2*4 
+#define CB_HALFFILTERLEN 4 
+#define CB_RESRANGE 34 
+#define CB_MAXGAIN (float) 1.3  
+ 
+/* enhancer */ 
+ 
+#define ENH_BLOCKL 80   /* block length */ 
+#define ENH_BLOCKL_HALF (ENH_BLOCKL/2) 
+#define ENH_HL 3    /* 2*ENH_HL+1 is number blocks 
+                           in said second sequence */ 
+#define ENH_SLOP 2      /* max difference estimated and 
+                           correct pitch period */ 
+#define ENH_PLOCSL 20   /* pitch-estimates and 
+                           pitch-locations buffer length */ 
+#define ENH_OVERHANG 2 
+#define ENH_UPS0 4      /* upsampling rate */ 
+#define ENH_FL0 3       /* 2*FLO+1 is the length of each filter */ 
+#define ENH_VECTL (ENH_BLOCKL+2*ENH_FL0) 
+#define ENH_CORRDIM (2*ENH_SLOP+1) 
+#define ENH_NBLOCKS (BLOCKL/ENH_BLOCKL) 
+#define ENH_NBLOCKS_EXTRA 5 
+#define ENH_NBLOCKS_TOT 8 /* ENH_NBLOCKS+ENH_NBLOCKS_EXTRA */ 
+#define ENH_BUFL (ENH_NBLOCKS_TOT)*ENH_BLOCKL 
+#define ENH_ALPHA0 (float)0.05 
+ 
+/* PLC */ 
+ 
+#define PLC_BFIATTENUATE (float)0.9 
+#define PLC_GAINTHRESHOLD (float)0.5 
+#define PLC_BWEXPAND (float)0.99 
+#define PLC_XT_MIX (float)1.0 
+#define PLC_XB_MIX (float)0.0 
+#define PLC_YT_MIX (float)0.95 
+#define PLC_YB_MIX (float)0.0 
+ 
+/* Down sampling */ 
+ 
+#define FILTERORDER_DS 7 
+#define DELAY_DS 3 
+#define FACTOR_DS 2 
+ 
+/* bit stream defs */ 
+ 
+#define NO_OF_BYTES 50 
+#define STATE_BITS 3 
+#define BYTE_LEN 8 
+#define ULP_CLASSES 3 
+ 
+/* help parameters */ 
+ 
+#define FLOAT_MAX (float)1.0e37 
+#define EPS (float)2.220446049250313e-016  
+#define PI (float)3.14159265358979323846 
+#define MIN_SAMPLE -32768 
+#define MAX_SAMPLE 32767 
+#define TWO_PI (float)6.283185307 
+#define PI2 (float)0.159154943 
+ 
+/* type definition encoder instance */ 
+typedef struct iLBC_Enc_Inst_t_ { 
+ 
+    /* analysis filter state */ 
+    float anaMem[LPC_FILTERORDER]; 
+ 
+    /* old lsf parameters for interpolation */ 
+    float lsfold[LPC_FILTERORDER]; 
+    float lsfdeqold[LPC_FILTERORDER]; 
+ 
+    /* signal buffer for LP analysis */ 
+    float lpc_buffer[LPC_LOOKBACK + BLOCKL]; 
+ 
+    /* state of input HP filter */ 
+    float hpimem[4]; 
+ 
+} iLBC_Enc_Inst_t; 
+ 
+/* type definition decoder instance */ 
+typedef struct iLBC_Dec_Inst_t_ { 
+    /* synthesis filter state */ 
+    float syntMem[LPC_FILTERORDER]; 
+ 
+    /* old LSF for interpolation */ 
+    float lsfdeqold[LPC_FILTERORDER]; 
+ 
+    /* pitch lag estimated in enhancer and used in PLC */ 
+    int last_lag; 
+ 
+    /* PLC state information */ 
+    int prevLag, consPLICount, prevPLI, prev_enh_pl; 
+    float prevGain, prevLpc[LPC_FILTERORDER+1]; 
+    float prevResidual[NSUB*SUBL]; 
+    float energy; 
+    unsigned long seed; 
+ 
+    /* previous synthesis filter parameters */ 
+    float old_syntdenum[(LPC_FILTERORDER + 1)*NSUB]; 
+ 
+    /* state of output HP filter */ 
+    float hpomem[4]; 
+ 
+    /* enhancer state information */ 
+    int use_enhancer; 
+    float enh_buf[ENH_BUFL]; 
+    float enh_period[ENH_NBLOCKS_TOT]; 
+ 
+} iLBC_Dec_Inst_t; 
+ 
+#endif 
+ 
+