ensure colors from both sides of difference are taken

derpibooru · Jun 22, 2020 · bbfa9a5 · bbfa9a5
1 parent 8164b9e
commit bbfa9a5
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/libavfilter/vf_palettegen.c b/libavfilter/vf_palettegen.c
@@ -444,9 +444,17 @@ static int update_histogram_diff(struct hist_node *hist,
         for (x = 0; x < f1->width; x++) {
             if (p[x] == q[x])
                 continue;
+
             ret = color_inc(hist, p[x]);
             if (ret < 0)
                 return ret;
+
+            nb_diff_colors += ret;
+
+            ret = color_inc(hist, q[x]);
+            if (ret < 0)
+                return ret;
+
             nb_diff_colors += ret;
         }
     }