Clarify that ShuffleOrder must be consistent in both directions

#minor-release PiperOrigin-RevId: 453622964
google · Jun 9, 2022 · 2c2be2d · 2c2be2d
1 parent 21ad8cf
commit 2c2be2d
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/source/ShuffleOrder.java b/library/core/src/main/java/com/google/android/exoplayer2/source/ShuffleOrder.java
@@ -23,6 +23,9 @@
  * Shuffled order of indices.
  *
  * <p>The shuffle order must be immutable to ensure thread safety.
+ *
+ * <p>The order must be consistent when traversed both {@linkplain #getNextIndex(int) forwards} and
+ * {@linkplain #getPreviousIndex(int) backwards}.
  */
 public interface ShuffleOrder {