Changeset 402 for pwntchaTweet

Timestamp:

Jan 4, 2005, 3:59:22 AM (18 years ago)

Author:

Sam Hocevar

Message:

• print colour count in debug messages

Location:

pwntcha/trunk/src

Files:

• common.h (modified) (1 diff)
• filters.c (modified) (1 diff)
• main.c (modified) (3 diffs)

pwntcha/trunk/src/common.h

@@ -46 +46 @@
 struct image *filter_median(struct image *img);
 struct image *filter_contrast(struct image *img);
+int filter_count(struct image *img);
 

pwntcha/trunk/src/filters.c

@@ -330 +330 @@
 }
 
+int filter_count(struct image *img)
+{
+    int histo[256];
+    int x, y, i, count = 0;
+    int r, g, b;
+
+    for(i = 0; i < 256; i++)
+        histo[i] = 0;
+
+    for(y = 0; y < img->height; y++)
+        for(x = 0; x < img->width; x++)
+        {
+            getgray(img, x, y, &r);
+            histo[r] = 1;
+        }
+
+    for(i = 0; i < 256; i++)
+        count += histo[i];
+
+    return count;
+}
+

pwntcha/trunk/src/main.c

@@ -109 +109 @@
         char *input = argv[optind], *result;
         struct image *img;
+        int count;
 
         img = image_load(argv[optind]);
@@ -118 +119 @@
         }
 
-        dprintf("image size %ix%i\n", img->width, img->height);
+        count = filter_count(img);
+        dprintf("image size %ix%i, %i colours\n",
+                img->width, img->height, count);
 
         if(!strcmp(mode, "test"))
@@ -135 +138 @@
                 result = decode_phpbb(img);
             }
-            else if(img->height == 25 || img->height == 30)
+            else if((img->height == 25 || img->height == 30)
+                     && count < 10)
             {
                 dprintf("autodetecting scode captcha\n");