[xiph-cvs] cvs commit: Tremor mdct.c

[Monty]

xiphmont    02/10/16 05:17:39

  Modified:    .        mdct.c
  Log:
  Fix to Nicolas Pitre's interpolated MDCT for 4096 and 8192

Revision  Changes    Path
1.9       +9 -9      Tremor/mdct.c

Index: mdct.c
===================================================================
RCS file: /usr/local/cvsroot/Tremor/mdct.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -r1.8 -r1.9
--- mdct.c	16 Oct 2002 09:07:00 -0000	1.8
+++ mdct.c	16 Oct 2002 09:17:39 -0000	1.9
@@ -13,7 +13,7 @@
 
  function: normalized modified discrete cosine transform
            power of two length transform only [64 <= n ]
- last mod: $Id: mdct.c,v 1.8 2002/10/16 09:07:00 xiphmont Exp $
+ last mod: $Id: mdct.c,v 1.9 2002/10/16 09:17:39 xiphmont Exp $
 
  Original algorithm adapted long ago from _The use of multirate filter
  banks for coding of high quality digital audio_, by T. Sporer,
@@ -425,16 +425,16 @@
 
           t0 += (v0 = (*V++)>>1);
           t1 += (v1 = (*V++)>>1);
-	  XPROD31( iX[0], -iX[1], t0, t1, &oX1[3], &oX2[0] ); T+=step;
+	  XPROD31( iX[0], -iX[1], t0, t1, &oX1[3], &oX2[0] );
           v0 += (t0 = (*T++)>>1);
           v1 += (t1 = (*T++)>>1);
-	  XPROD31( iX[2], -iX[3], v0, v1, &oX1[2], &oX2[1] ); T+=step;
+	  XPROD31( iX[2], -iX[3], v0, v1, &oX1[2], &oX2[1] );
           t0 += (v0 = (*V++)>>1);
           t1 += (v1 = (*V++)>>1);
-	  XPROD31( iX[4], -iX[5], t0, t1, &oX1[1], &oX2[2] ); T+=step;
+	  XPROD31( iX[4], -iX[5], t0, t1, &oX1[1], &oX2[2] );
           v0 += (t0 = (*T++)>>1);
           v1 += (t1 = (*T++)>>1);
-	  XPROD31( iX[6], -iX[7], v0, v1, &oX1[0], &oX2[3] ); T+=step;
+	  XPROD31( iX[6], -iX[7], v0, v1, &oX1[0], &oX2[3] );
 
           oX2+=4;
           iX+=8;
@@ -456,19 +456,19 @@
           v1  = *V++;
           t0 +=  (q0 = (v0-t0)>>2);
           t1 +=  (q1 = (v1-t1)>>2);
-	  XPROD31( iX[0], -iX[1], t0, t1, &oX1[3], &oX2[0] ); T+=step;
+	  XPROD31( iX[0], -iX[1], t0, t1, &oX1[3], &oX2[0] );
           t0  = v0-q0;
           t1  = v1-q1;
-	  XPROD31( iX[2], -iX[3], t0, t1, &oX1[2], &oX2[1] ); T+=step;
+	  XPROD31( iX[2], -iX[3], t0, t1, &oX1[2], &oX2[1] );
 
           t0  = *T++;
           t1  = *T++;
           v0 += (q0 = (t0-v0)>>2);
           v1 += (q1 = (t1-v1)>>2);
-	  XPROD31( iX[4], -iX[5], v0, v1, &oX1[1], &oX2[2] ); T+=step;
+	  XPROD31( iX[4], -iX[5], v0, v1, &oX1[1], &oX2[2] );
           v0  = t0-q0;
           v1  = t1-q1;
-	  XPROD31( iX[6], -iX[7], v0, v1, &oX1[0], &oX2[3] ); T+=step;
+	  XPROD31( iX[6], -iX[7], v0, v1, &oX1[0], &oX2[3] );
 
           oX2+=4;
           iX+=8;

<p><p>--- >8 ----
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