feat: Export getMaxSegmentEndTime and getAvailabilityTimeOffset in Pr…

…esentationTimeline (#6839)

lib/media/presentation_timeline.js

@@ -323,6 +323,17 @@ shaka.media.PresentationTimeline = class {
   }
 
 
+  /**
+   * Gets the end time of the last available segment.
+   *
+   * @return {?number}
+   * @export
+   */
+  getMaxSegmentEndTime() {
+    return this.maxSegmentEndTime_;
+  }
+
+
   /**
    * Lock the presentation timeline's start time.  After this is called, no
    * further adjustments to presentationStartTime_ will be permitted.
@@ -630,6 +641,19 @@ shaka.media.PresentationTimeline = class {
     this.availabilityTimeOffset_ = offset;
   }
 
+
+  /**
+   * Gets the presentation's segment availability time offset. This should be
+   * only configured for Low Latency Dash.
+   *
+   * @return {number} availabilityTimeOffset parameter
+   * @export
+   */
+  getAvailabilityTimeOffset() {
+    return this.availabilityTimeOffset_;
+  }
+
+
   /**
    * Debug only: assert that the timeline parameters make sense for the type
    * of presentation (VOD, IPR, live).