stop further processing until vis is over

app/src/main/rs/decoder.rs

@@ -488,14 +488,14 @@ void decode(int samples) {
             even_hpos = 0;
             seperator_counter = 0;
             sync_counter = sync_length;
-            if (++vis_counter >= vis_length) {
+            if (++vis_counter < vis_length)
+                continue;
             calibration_progress = 0;
             calibration_countdown = 0;
             vis_counter = 0;
             for (int i = 0; i < bitmap_width * bitmap_height; ++i)
                 pixel_buffer[i] = rgb(0, 0, 0);
         }
-        }
 
         int sync_level = cnt_active && cnt_quantized == 0;
         int sync_pulse = !sync_level && sync_counter >= sync_length;