BADGER-204 Update Dash.js to Handle cases where Video Freezes

docs/tutorials/Plugins.md

@@ -21,6 +21,8 @@ The full interface is as follows:
 - `onSubtitlesRenderError`
 - `onSubtitlesDynamicLoadError`
 - `onFragmentContentLengthMismatch`
+- `onPlaybackRateChanged`
+- `onPlaybackFrozen`
 
 An example plugin may look like:
 

package.json

@@ -64,7 +64,7 @@
     "typescript-eslint": "^7.2.0"
   },
   "dependencies": {
-    "dashjs": "github:bbc/dash.js#smp-v4.7.3-8",
+    "dashjs": "github:bbc/dash.js#smp-v4.7.3-9",
     "smp-imsc": "github:bbc/imscJS#v1.0.3"
   },
   "repository": {

src/playbackstrategy/msestrategy.js

@@ -117,7 +117,7 @@ function MSEStrategy(
     QUOTA_EXCEEDED: "quotaExceeded",
     TEXT_TRACKS_ADDED: "allTextTracksAdded",
     CURRENT_TRACK_CHANGED: "currentTrackChanged",
-    PLAYBACK_RATE_CHANGED: "playbackRateChanged",
+    PLAYBACK_FROZEN: "playbackFrozen",
   }
 
   function onLoadedMetaData() {
@@ -204,6 +204,7 @@ function MSEStrategy(
   }
 
   function onRateChange() {
+    Plugins.interface.onPlaybackRateChanged({ playbackRate: mediaElement.playbackRate })
     DebugTool.dynamicMetric("playback-rate", mediaElement.playbackRate)
   }
 
@@ -703,11 +704,7 @@ function MSEStrategy(
     mediaPlayer.on(DashJSEvents.TEXT_TRACKS_ADDED, handleTextTracks)
     mediaPlayer.on(DashJSEvents.MANIFEST_LOADING_FINISHED, manifestLoadingFinished)
     mediaPlayer.on(DashJSEvents.CURRENT_TRACK_CHANGED, onCurrentTrackChanged)
-    mediaPlayer.on(DashJSEvents.PLAYBACK_RATE_CHANGED, onPlaybackRateChanged)
-  }
-
-  function onPlaybackRateChanged(event) {
-    Plugins.interface.onPlaybackRateChanged(event)
+    mediaPlayer.on(DashJSEvents.PLAYBACK_FROZEN, onPlaybackFrozen)
   }
 
   function handleTextTracks() {
@@ -896,7 +893,7 @@ function MSEStrategy(
       mediaPlayer.off(DashJSEvents.GAP_JUMP_TO_END, onGapJump)
       mediaPlayer.off(DashJSEvents.QUOTA_EXCEEDED, onQuotaExceeded)
       mediaPlayer.off(DashJSEvents.CURRENT_TRACK_CHANGED, onCurrentTrackChanged)
-      mediaPlayer.off(DashJSEvents.PLAYBACK_RATE_CHANGED, onPlaybackRateChanged)
+      mediaPlayer.off(DashJSEvents.PLAYBACK_FROZEN, onPlaybackFrozen)
       mediaPlayer = undefined
     }
 
@@ -1017,6 +1014,11 @@ function MSEStrategy(
     })
   }
 
+  function onPlaybackFrozen(event) {
+    Plugins.interface.onPlaybackFrozen(event)
+    DebugTool.error(`${event.cause}. Total frames - ${event.totalVideoFrames}`)
+  }
+
   return {
     transitions: {
       canBePaused: () => true,

src/plugins.js

@@ -51,5 +51,6 @@ export default {
     onFragmentContentLengthMismatch: (evt) => callOnAllPlugins("onFragmentContentLengthMismatch", evt),
     onQuotaExceeded: (evt) => callOnAllPlugins("onQuotaExceeded", evt),
     onPlaybackRateChanged: (evt) => callOnAllPlugins("onPlaybackRateChanged", evt),
+    onPlaybackFrozen: (evt) => callOnAllPlugins("onPlaybackFrozen", evt),
   },
 }