From 0f00d1ce2ca6ab0e69be3dd43c1c7cfa2412217b Mon Sep 17 00:00:00 2001
From: "Suraj kumar (sk)" <71056993+surajkumar-sk@users.noreply.github.com>
Date: Wed, 12 May 2021 00:36:30 +0530
Subject: [PATCH] feat: Add a buffer fullness method (#3392)

Closes #3389
---
 lib/player.js | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/lib/player.js b/lib/player.js
index b13cfa1197..768931749f 100644
--- a/lib/player.js
+++ b/lib/player.js
@@ -2838,6 +2838,32 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
     return this.config_;
   }
 
+  /**
+   * Returns the ratio of video length buffered compared to buffering Goal
+   * @return {number}
+   * @export
+   */
+  getBufferFullness() {
+    if (this.video_) {
+      const bufferedLength = this.video_.buffered.length;
+      const bufferedEnd =
+          bufferedLength ? this.video_.buffered.end(bufferedLength - 1) : 0;
+      const bufferingGoal = this.getConfiguration().streaming.bufferingGoal;
+      const lengthToBeBuffered = Math.min(this.video_.currentTime +
+          bufferingGoal, this.seekRange().end);
+
+      if (bufferedEnd >= lengthToBeBuffered) {
+        return 1;
+      } else if (bufferedEnd <= this.video_.currentTime) {
+        return 0;
+      } else if (bufferedEnd < lengthToBeBuffered) {
+        return ((bufferedEnd - this.video_.currentTime) /
+            (lengthToBeBuffered - this.video_.currentTime));
+      }
+    }
+    return 0;
+  }
+
   /**
    * Reset configuration to default.
    * @export