fix some tests

Author: master-of-zen

src/scenechange/mod.rs

@@ -193,7 +193,7 @@ impl<T: Pixel> SceneChangeDetector<T> {
       self.score_deque.clear();
     } else {
       // Keep score deque 5 + lookahead_size frames
-      if self.score_deque.len() > 5 + self.lookahead_offset {
+      if self.score_deque.len() > 11 {
         self.score_deque.pop();
       }
     }
@@ -237,11 +237,14 @@ impl<T: Pixel> SceneChangeDetector<T> {
   /// Returns true if current scene score is higher than adapted threshold
   fn adaptive_scenecut(&mut self) -> bool {
     // Max cost of all available frames
-    let max_of_deque: f64 = self
-      .score_deque
+
+    let mut cloned_deque = self.score_deque.to_vec();
+    cloned_deque.remove(self.deque_offset);
+
+    let max_of_deque: f64 = cloned_deque
       .iter()
       .cloned()
-      .map(|(_, b)| b)
+      .map(|(b, _)| b)
       .fold(-1. / 0. /* -inf */, f64::max);
 
     // Scenecut check