feat: Change default preferredKeySystems for Xbox and PS4 (#6471)

Related to #6468
shaka-project · Apr 24, 2024 · cff3d84 · cff3d84
1 parent 0883c32
commit cff3d84
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/externs/shaka/player.js b/externs/shaka/player.js
@@ -827,7 +827,8 @@ shaka.extern.PersistentSessionMetadata;
  *   <i>Defaults to 1.</i> <br>
  *   The frequency in seconds with which to check the expiration of a session.
  * @property {!Array.<string>} preferredKeySystems
- *   <i>Defaults to an empty array. </i> <br>
+ *   <i>Defaults ['com.microsoft.playready'] on Xbox One and PlayStation 4, and
+ *   an empty array for all other browsers.</i> <br>
  *   Specifies the priorties of available DRM key systems.
  * @property {Object.<string, string>} keySystemsMapping
  *   A map of key system name to key system name.

diff --git a/lib/util/player_configuration.js b/lib/util/player_configuration.js
@@ -94,6 +94,13 @@ shaka.util.PlayerConfiguration = class {
       ignoreDuplicateInitData: !shaka.util.Platform.isTizen2(),
     };
 
+    // The Xbox One and PS4 only support the Playready DRM, so they should
+    // prefer that key system by default to improve startup performance.
+    if (shaka.util.Platform.isXboxOne() ||
+        shaka.util.Platform.isPS4()) {
+      drm.preferredKeySystems.push('com.microsoft.playready');
+    }
+
     let codecSwitchingStrategy = shaka.config.CodecSwitchingStrategy.RELOAD;
     let multiTypeVariantsAllowed = false;
     if (shaka.util.Platform.supportsSmoothCodecSwitching()) {