1 files changed, 107 insertions, 66 deletions
diff --git a/codecs/ilbc/syntFilter.c b/codecs/ilbc/syntFilter.c
index 121d1f508..8621850d0 100755
--- a/codecs/ilbc/syntFilter.c
+++ b/codecs/ilbc/syntFilter.c
@@ -1,66 +1,107 @@
- 
-/****************************************************************** 
- 
-    iLBC Speech Coder ANSI-C Source Code 
- 
-    syntFilter.c  
- 
-    Copyright (c) 2001, 
-    Global IP Sound AB. 
-    All rights reserved. 
- 
-******************************************************************/ 
- 
-#include "iLBC_define.h" 
-#include "syntFilter.h"
- 
-/*----------------------------------------------------------------* 
- *  LP synthesis filter. 
- *---------------------------------------------------------------*/ 
-     
-void syntFilter( 
-    float *Out,     /* (i/o) Signal to be filtered */ 
-    float *a,       /* (i) LP parameters */ 
-    int len,    /* (i) Length of signal */ 
-    float *mem      /* (i/o) Filter state */ 
-){ 
-    int i, j; 
-    float *po, *pi, *pa, *pm; 
- 
-    po=Out; 
- 
-    /* Filter first part using memory from past */ 
- 
-    for (i=0;i<LPC_FILTERORDER;i++) { 
-        pi=&Out[i-1]; 
-        pa=&a[1]; 
-        pm=&mem[LPC_FILTERORDER-1]; 
-        for (j=1;j<=i;j++) { 
-            *po-=(*pa++)*(*pi--); 
-        } 
-        for (j=i+1;j<LPC_FILTERORDER+1;j++) { 
-            *po-=(*pa++)*(*pm--); 
-        } 
-        po++; 
-    } 
- 
-    /* Filter last part where the state is entierly in  
-       the output vector */ 
-     
-    for (i=LPC_FILTERORDER;i<len;i++) { 
-        pi=&Out[i-1]; 
-        pa=&a[1]; 
-        for (j=1;j<LPC_FILTERORDER+1;j++) { 
-            *po-=(*pa++)*(*pi--); 
-        } 
-        po++; 
-    } 
- 
-    /* Update state vector */ 
- 
-    memcpy(mem, &Out[len-LPC_FILTERORDER],  
-        LPC_FILTERORDER*sizeof(float)); 
-} 
- 
- 
- 
+
+/******************************************************************
+
+    iLBC Speech Coder ANSI-C Source Code
+
+    syntFilter.c 
+
+    Copyright (C) The Internet Society (2004). 
+    All Rights Reserved.
+
+******************************************************************/
+
+#include "iLBC_define.h"
+
+/*----------------------------------------------------------------*
+ *  LP synthesis filter.
+ *---------------------------------------------------------------*/
+    
+void syntFilter(
+    float *Out,     /* (i/o) Signal to be filtered */
+    float *a,       /* (i) LP parameters */
+    int len,    /* (i) Length of signal */
+    float *mem      /* (i/o) Filter state */
+){
+    int i, j;
+    float *po, *pi, *pa, *pm;
+
+    po=Out;
+
+    /* Filter first part using memory from past */
+
+    for (i=0; i<LPC_FILTERORDER; i++) {
+        pi=&Out[i-1];
+        pa=&a[1];
+        pm=&mem[LPC_FILTERORDER-1];
+        for (j=1; j<=i; j++) {
+            *po-=(*pa++)*(*pi--);
+        }
+        for (j=i+1; j<LPC_FILTERORDER+1; j++) {
+            *po-=(*pa++)*(*pm--);
+        }
+        po++;
+    }
+
+    /* Filter last part where the state is entierly in 
+       the output vector */
+    
+    for (i=LPC_FILTERORDER; i<len; i++) {
+
+
+        pi=&Out[i-1];
+        pa=&a[1];
+        for (j=1; j<LPC_FILTERORDER+1; j++) {
+            *po-=(*pa++)*(*pi--);
+        }
+        po++;
+    }
+
+    /* Update state vector */
+
+    memcpy(mem, &Out[len-LPC_FILTERORDER], 
+        LPC_FILTERORDER*sizeof(float));
+}
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