Better implement diff in track_dispatcher for workers

src/core/api/track_management/track_dispatcher.ts

@@ -25,8 +25,15 @@ import {
  * @class TrackDispatcher
  */
 export default class TrackDispatcher extends EventEmitter<ITrackDispatcherEvent> {
-  public onManifestUpdate: () => void;
-  public onDeciperabilityUpdate: () => void;
+  /**
+   * Force the `TrackDispatcher` to re-consider the current track.
+   * Should be called when any information on the track had a chance to change,
+   * especially:
+   *   - after a Manifest update
+   *   - after one or several of its Representation were found to be either
+   *     unsupported or undecipherable.
+   */
+  public refresh: () => void;
 
   /**
    * Reference through which the wanted track will be emitted.
@@ -83,8 +90,7 @@ export default class TrackDispatcher extends EventEmitter<ITrackDispatcherEvent>
     this._canceller = new TaskCanceller();
     this._adaptationRef = adaptationRef;
     this._updateToken = false;
-    this.onManifestUpdate = noop;
-    this.onDeciperabilityUpdate = noop;
+    this.refresh = noop;
   }
 
   /**
@@ -162,8 +168,7 @@ export default class TrackDispatcher extends EventEmitter<ITrackDispatcherEvent>
 
     /* eslint-disable-next-line @typescript-eslint/no-this-alias */
     const self = this;
-    this.onManifestUpdate = updateReferenceIfNeeded;
-    this.onDeciperabilityUpdate = updateReferenceIfNeeded;
+    this.refresh = updateReferenceIfNeeded;
     this._canceller.signal.register(removeListeners);
     trackInfo.lockedRepresentations.onUpdate(updateReferenceIfNeeded, {
       clearSignal: this._canceller.signal,
@@ -222,8 +227,7 @@ export default class TrackDispatcher extends EventEmitter<ITrackDispatcherEvent>
     }
 
     function removeListeners() {
-      self.onManifestUpdate = noop;
-      self.onDeciperabilityUpdate = noop;
+      self.refresh = noop;
     }
   }
 

src/core/api/track_management/tracks_store.ts

@@ -302,9 +302,9 @@ export default class TracksStore extends EventEmitter<ITracksStoreEvents> {
     }
 
     for (const storedPeriodInfo of this._storedPeriodInfo) {
-      storedPeriodInfo.audio.dispatcher?.onManifestUpdate();
-      storedPeriodInfo.video.dispatcher?.onManifestUpdate();
-      storedPeriodInfo.text.dispatcher?.onManifestUpdate();
+      storedPeriodInfo.audio.dispatcher?.refresh();
+      storedPeriodInfo.video.dispatcher?.refresh();
+      storedPeriodInfo.text.dispatcher?.refresh();
     }
   }