Improve end-of-stream handling

src/controller/buffer-controller.ts

@@ -493,25 +493,27 @@ export default class BufferController implements ComponentAPI {
   // on BUFFER_EOS mark matching sourcebuffer(s) as ended and trigger checkEos()
   // an undefined data.type will mark all buffers as EOS.
   protected onBufferEos(event: Events.BUFFER_EOS, data: BufferEOSData) {
-    for (const type in this.sourceBuffer) {
+    const ended = this.getSourceBufferTypes().reduce((acc, type) => {
+      const sb = this.sourceBuffer[type];
       if (!data.type || data.type === type) {
-        const sb = this.sourceBuffer[type as SourceBufferName];
         if (sb && !sb.ended) {
           sb.ended = true;
           logger.log(`[buffer-controller]: ${type} sourceBuffer now EOS`);
         }
       }
+      return acc && !!(!sb || sb.ended);
+    }, true);
+
+    if (ended) {
+      this.blockBuffers(() => {
+        const { mediaSource } = this;
+        if (!mediaSource || mediaSource.readyState !== 'open') {
+          return;
+        }
+        // Allow this to throw and be caught by the enqueueing function
+        mediaSource.endOfStream();
+      });
     }
-
-    const endStream = () => {
-      const { mediaSource } = this;
-      if (!mediaSource || mediaSource.readyState !== 'open') {
-        return;
-      }
-      // Allow this to throw and be caught by the enqueueing function
-      mediaSource.endOfStream();
-    };
-    this.blockBuffers(endStream);
   }
 
   protected onLevelUpdated(

tests/functional/auto/setup.js

@@ -267,17 +267,7 @@ async function testSeekOnVOD(url, config) {
                   logs: self.logString,
                 });
               }
-            }, 3000);
-            self.setTimeout(function () {
-              const { currentTime, paused } = video;
-              callback({
-                code: 'timeout-waiting-for-ended-event',
-                currentTime,
-                duration,
-                paused,
-                logs: self.logString,
-              });
-            }, 10000);
+            }, 5000);
           };
           const seekToTime = video.seekable.end(0) - 3;
           console.log(
@@ -287,6 +277,16 @@ async function testSeekOnVOD(url, config) {
               seekToTime
           );
           video.currentTime = seekToTime;
+          self.setTimeout(function () {
+            const { currentTime, paused } = video;
+            callback({
+              code: 'timeout-waiting-for-ended-event',
+              currentTime,
+              duration,
+              paused,
+              logs: self.logString,
+            });
+          }, 12000);
         }, 3000);
       };
       // Fail test early if more than 2 buffered ranges are found (with configured exceptions)

tests/functional/auto/testbench.js

@@ -72,7 +72,7 @@ function objectAssign(target) {
     ) {
       var nextKey = keysArray[nextIndex];
       var desc = Object.getOwnPropertyDescriptor(nextSource, nextKey);
-      if (desc?.enumerable) {
+      if (desc !== undefined && desc.enumerable) {
         to[nextKey] = nextSource[nextKey];
       }
     }