fix: Fix MediaCapabilities polyfill on Playstation 5 (shaka-project#3808

)

Add Playstation 5 detection to the Media Capabilities Polyfill install method.

Fixes shaka-project#3582

Co-authored-by: Dan Sparacio <daniel.sparacio@cbsinteractive.com>
Change-Id: Ied871f73f0ad4f2d1f95f91158907179ee52ddea

lib/polyfill/media_capabilities.js

@@ -34,8 +34,14 @@ shaka.polyfill.MediaCapabilities = class {
     // See: https://github.com/google/shaka-player/issues/3530
     // TODO: re-evaluate MediaCapabilities in the future versions of Apple
     // Browsers.
+    // Since MediaCapabilities implementation is buggy in PS5 browsers, we
+    // should always install polyfill for PS5 browsers.
+    // See: https://github.com/google/shaka-player/issues/3582
+    // TODO: re-evaluate MediaCapabilities in the future versions of PS5
+    // Browsers.
     if (!shaka.util.Platform.isChromecast() &&
       !shaka.util.Platform.isApple() &&
+      !shaka.util.Platform.isPS5() &&
       navigator.mediaCapabilities) {
       shaka.log.debug(
           'MediaCapabilities: Native mediaCapabilities support found.');
@@ -149,7 +155,7 @@ shaka.polyfill.MediaCapabilities = class {
         sessionTypes: mediaCapkeySystemConfig.sessionTypes,
       };
 
-      // Only add the audio video capablities if they have valid data.
+      // Only add the audio video capabilities if they have valid data.
       // Otherwise the query will fail.
       if (audioCapabilities.length) {
         mediaKeySystemConfig.audioCapabilities = audioCapabilities;

lib/util/platform.js

@@ -163,7 +163,6 @@ shaka.util.Platform = class {
            !shaka.util.Platform.isEdge();
   }
 
-
   /**
    * Check if the current platform is from Apple.
    *
@@ -179,6 +178,19 @@ shaka.util.Platform = class {
             && !shaka.util.Platform.isTizen();
   }
 
+  /**
+   * Check if the current platform is Playstation 5.
+   *
+   * Returns true on Playstation 5 browsers.
+   *
+   * Returns false for Playstation 5 browsers
+   *
+   * @return {boolean}
+   */
+  static isPS5() {
+    return shaka.util.Platform.userAgentContains_('PlayStation 5');
+  }
+
   /**
    * Returns a major version number for Safari, or Safari-based iOS browsers.
    *