fix: Detect screen change to update ABR according HDR vs SDR (#8606)

Author: avelad

lib/media/adaptation_set_criteria.js

@@ -36,6 +36,14 @@ shaka.media.AdaptationSetCriteria = class {
    * @exportInterface
    */
   configure(config) {}
+
+  /**
+   * Gets the current AdaptationSetCriteria configuration.
+   *
+   * @return {?shaka.media.AdaptationSetCriteria.Configuration}
+   * @exportInterface
+   */
+  getConfiguration() {}
 };
 
 /**

lib/media/preference_based_criteria.js

@@ -33,6 +33,13 @@ shaka.media.PreferenceBasedCriteria = class {
     this.config_ = config;
   }
 
+  /**
+   * @override
+   */
+  getConfiguration() {
+    return this.config_;
+  }
+
   /**
    * @override
    */

lib/player.js

@@ -2742,6 +2742,24 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
     // Add all media element listeners.
     this.addBasicMediaListeners_(mediaElement, startTimeOfLoad);
 
+    if ('onchange' in window.screen) {
+      this.loadEventManager_.listen(
+          /** @type {EventTarget} */(window.screen), 'change', () => {
+            if (this.currentAdaptationSetCriteria_.getConfiguration) {
+              const config =
+                  this.currentAdaptationSetCriteria_.getConfiguration();
+              if (config.hdrLevel == 'AUTO') {
+                this.updateAbrManagerVariants_();
+              } else if (this.config_.preferredVideoHdrLevel == 'AUTO' &&
+                  this.config_.abr.enabled) {
+                config.hdrLevel = 'AUTO';
+                this.currentAdaptationSetCriteria_.configure(config);
+                this.updateAbrManagerVariants_();
+              }
+            }
+          });
+    }
+
     let isLcevcDualTrack = false;
     for (const variant of this.manifest_.variants) {
       const dependencyStream = variant.video && variant.video.dependencyStream;