updateQueuedPeriods(): If known duration changed for a media period, remove all media periods after

PiperOrigin-RevId: 223603915

library/core/src/main/java/com/google/android/exoplayer2/MediaPeriodQueue.java

@@ -307,7 +307,11 @@ import com.google.android.exoplayer2.util.Assertions;
     MediaPeriodHolder periodHolder = getFrontPeriod();
     MediaPeriodHolder periodHolder = getFrontPeriod();
     while (periodHolder != null) {
     while (periodHolder != null) {
       if (previousPeriodHolder == null) {
       if (previousPeriodHolder == null) {
+        long previousDurationUs = periodHolder.info.durationUs;
         periodHolder.info = getUpdatedMediaPeriodInfo(periodHolder.info);
         periodHolder.info = getUpdatedMediaPeriodInfo(periodHolder.info);
+        if (!canKeepAfterMediaPeriodHolder(periodHolder, previousDurationUs)) {
+          return !removeAfter(periodHolder);
+        }
       } else {
       } else {
         // Check this period holder still follows the previous one, based on the new timeline.
         // Check this period holder still follows the previous one, based on the new timeline.
         if (periodIndex == C.INDEX_UNSET
         if (periodIndex == C.INDEX_UNSET
@@ -326,6 +330,8 @@ import com.google.android.exoplayer2.util.Assertions;
         // Check the media period information matches the new timeline.
         // Check the media period information matches the new timeline.
         if (!canKeepMediaPeriodHolder(periodHolder, periodInfo)) {
         if (!canKeepMediaPeriodHolder(periodHolder, periodInfo)) {
           return !removeAfter(previousPeriodHolder);
           return !removeAfter(previousPeriodHolder);
+        } else if (!canKeepAfterMediaPeriodHolder(periodHolder, periodInfo.durationUs)) {
+          return !removeAfter(periodHolder);
         }
         }
       }
       }
 
 
@@ -469,6 +475,15 @@ import com.google.android.exoplayer2.util.Assertions;
   }
   }
 
 
   /**
   /**
+   * Returns whether periods after {@code periodHolder} can be kept for playing given its previous
+   * duration.
+   */
+  private boolean canKeepAfterMediaPeriodHolder(
+      MediaPeriodHolder periodHolder, long previousDurationUs) {
+    return previousDurationUs == C.TIME_UNSET || previousDurationUs == periodHolder.info.durationUs;
+  }
+
+  /**
    * Updates the queue for any playback mode change, and returns whether the change was fully
    * Updates the queue for any playback mode change, and returns whether the change was fully
    * handled. If not, it is necessary to seek to the current playback position.
    * handled. If not, it is necessary to seek to the current playback position.
    */
    */