--- a/Meerwald/wang_common.c	Tue Sep 21 13:40:51 2010 +0200
+++ b/Meerwald/wang_common.c	Sat Jan 28 23:54:58 2023 +0100
@@ -1,6 +1,9 @@
 #include "dwt_util.h"
 #include "wang_common.h"
 
+Subband_data *subbands;
+int n_subbands;
+
 void init_subbands(Image_tree tree) {
   int levels = 0;
   int i;
@@ -24,7 +27,7 @@
     subbands[i++] = alloc_subband(HORIZONTAL, p->horizontal);
     subbands[i++] = alloc_subband(VERTICAL, p->vertical);
     subbands[i++] = alloc_subband(DIAGONAL, p->diagonal);
-    
+
     p = p->coarse;
   }
 
@@ -44,11 +47,11 @@
   p->size = p->height * p->width;
   p->image = tree->image;
   p->type = type;
-  
+ 
   p->selected = malloc(p->height * sizeof(char *));
   p->selected[0] = calloc(p->size, sizeof(char));
   for (i = 1; i < p->height; i++)
-    p->selected[i] = &(p->selected[0][i * p->width]); 
+    p->selected[i] = &(p->selected[0][i * p->width]);
 
   return p;
 }