[Flake-enc-svnlog] SF.net SVN: flake-enc:[229] libflake/optimize.c

[<jb...@us...>]

Revision: 229
          http://flake-enc.svn.sourceforge.net/flake-enc/?rev=229&view=rev
Author:   jbr79
Date:     2008-08-09 13:33:45 +0000 (Sat, 09 Aug 2008)

Log Message:
-----------
simplify fixed coeff filter

Modified Paths:
--------------
    libflake/optimize.c

Modified: libflake/optimize.c
===================================================================
--- libflake/optimize.c	2007-11-20 03:21:24 UTC (rev 228)
+++ libflake/optimize.c	2008-08-09 13:33:45 UTC (rev 229)
@@ -36,36 +36,29 @@
 {
     int i;
 
+    if(order) {
+        memcpy(res, smp, order*sizeof(int32_t));
+    } else {
+        memcpy(res, smp, n*sizeof(int32_t));
+        return;
+    }
     switch(order) {
-        case 0:
-            memcpy(res, smp, n*sizeof(int32_t));
-            return;
         case 1:
-            res[0] = smp[0];
             for(i=1; i<n; i++) {
                 res[i] = smp[i] - (smp[i-1]);
             }
             return;
         case 2:
-            res[0] = smp[0];
-            res[1] = smp[1];
             for(i=2; i<n; i++) {
                 res[i] = smp[i] - (smp[i-1] << 1) + smp[i-2];
             }
             return;
         case 3:
-            res[0] = smp[0];
-            res[1] = smp[1];
-            res[2] = smp[2];
             for(i=3; i<n; i++) {
                 res[i] = smp[i] - 3*smp[i-1] + 3*smp[i-2] - smp[i-3];
             }
             return;
         case 4:
-            res[0] = smp[0];
-            res[1] = smp[1];
-            res[2] = smp[2];
-            res[3] = smp[3];
             for(i=4; i<n; i++) {
                 res[i] = smp[i] - (smp[i-1] << 2) + 6*smp[i-2] - (smp[i-3] << 2) + smp[i-4];
             }


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