fix: Fix MSE polyfill for iOS (#7049)

Fixes #7048
shaka-project · Jul 18, 2024 · 44dc9a9 · 44dc9a9
1 parent 451a41e
commit 44dc9a9
Showing 1 changed file with 10 additions and 8 deletions.
diff --git a/lib/polyfill/mediasource.js b/lib/polyfill/mediasource.js
@@ -32,7 +32,7 @@ shaka.polyfill.MediaSource = class {
 
     if (!window.MediaSource && !window.ManagedMediaSource) {
       shaka.log.info('No MSE implementation available.');
-    } else if (safariVersion) {
+    } else if (safariVersion && window.MediaSource) {
       // NOTE:  shaka.Player.isBrowserSupported() has its own restrictions on
       // Safari version.
       if (safariVersion <= 10) {
@@ -167,14 +167,16 @@ shaka.polyfill.MediaSource = class {
    * @private
    */
   static rejectContainer_(container) {
-    const isTypeSupported =
-        // eslint-disable-next-line no-restricted-syntax
-        MediaSource.isTypeSupported.bind(MediaSource);
+    if (window.MediaSource) {
+      const isTypeSupported =
+          // eslint-disable-next-line no-restricted-syntax
+          MediaSource.isTypeSupported.bind(MediaSource);
 
-    MediaSource.isTypeSupported = (mimeType) => {
-      const actualContainer = shaka.util.MimeUtils.getContainerType(mimeType);
-      return actualContainer != container && isTypeSupported(mimeType);
-    };
+      MediaSource.isTypeSupported = (mimeType) => {
+        const actualContainer = shaka.util.MimeUtils.getContainerType(mimeType);
+        return actualContainer != container && isTypeSupported(mimeType);
+      };
+    }
 
     if (window.ManagedMediaSource) {
       const isTypeSupportedManaged =