abr-controller: protect hls.startLevel against runtime exception

onetw012 · Nov 28, 2016 · 5e0904d · 5e0904d
1 parent ccfaeff
commit 5e0904d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/controller/abr-controller.js b/src/controller/abr-controller.js
@@ -212,8 +212,8 @@ class AbrController extends EventHandler {
   }
 
   get minAutoLevel() {
-    let hls = this.hls, levels = hls.levels, minAutoBitrate = hls.config.minAutoBitrate;
-    for (let i = 0; i < levels.length; i++) {
+    let hls = this.hls, levels = hls.levels, minAutoBitrate = hls.config.minAutoBitrate, len = levels ? levels.length : 0;
+    for (let i = 0; i < len; i++) {
       if (levels[i].bitrate > minAutoBitrate) {
         return i;
       }