fix: support Widevine and Playready Hardware DRM. (#111)

Author: yajin2021

api-extractor/report/hls.js.api.md

@@ -1503,6 +1503,8 @@ export enum Events {
     // (undocumented)
     KEY_LOADING = "hlsKeyLoading",
     // (undocumented)
+    KEY_STATUSES_CHANGED = "hlsKeyStatusesChanged",
+    // (undocumented)
     LEVEL_LOADED = "hlsLevelLoaded",
     // (undocumented)
     LEVEL_LOADING = "hlsLevelLoading",
@@ -2401,6 +2403,8 @@ export interface HlsListeners {
     // (undocumented)
     [Events.KEY_LOADING]: (event: Events.KEY_LOADING, data: KeyLoadingData) => void;
     // (undocumented)
+    [Events.KEY_STATUSES_CHANGED]: (event: Events.KEY_STATUSES_CHANGED, data: KeyStatusesChangedData) => void;
+    // (undocumented)
     [Events.LEVEL_LOADED]: (event: Events.LEVEL_LOADED, data: LevelLoadedData) => void;
     // (undocumented)
     [Events.LEVEL_LOADING]: (event: Events.LEVEL_LOADING, data: LevelLoadingData) => void;
@@ -3036,6 +3040,16 @@ export interface KeyLoadingData {
     frag: Fragment;
 }
 
+// Warning: (ae-missing-release-tag) "KeyStatusesChangedData" is part of the package's API, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export interface KeyStatusesChangedData {
+    // (undocumented)
+    keyStatuses: MediaKeyStatusMap;
+    // (undocumented)
+    keySystem: string;
+}
+
 // Warning: (ae-missing-release-tag) "KeySystemFormats" is part of the package's API, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)

src/controller/eme-controller.ts

@@ -680,6 +680,11 @@ class EMEController extends Logger implements ComponentAPI {
         this.warn(`${context.keySystem} expired for key ${keyId}`);
         this.renewKeySession(context);
       }
+
+      this.hls.trigger(Events.KEY_STATUSES_CHANGED, {
+        keySystem: context.decryptdata.keyFormat,
+        keyStatuses: keySession.keyStatuses,
+      });
     });
 
     addEventListener(context.mediaKeysSession, 'message', onmessage);
@@ -708,16 +713,9 @@ class EMEController extends Logger implements ComponentAPI {
               ),
             );
           } else if (keyStatus === 'internal-error') {
-            reject(
-              new EMEKeyError(
-                {
-                  type: ErrorTypes.KEY_SYSTEM_ERROR,
-                  details: ErrorDetails.KEY_SYSTEM_STATUS_INTERNAL_ERROR,
-                  fatal: true,
-                },
-                `key status changed to "${keyStatus}"`,
-              ),
-            );
+            // resolve for Hardware DRM
+            this.warn('keyStatus: internal-error');
+            resolve();
           } else if (keyStatus === 'expired') {
             reject(new Error('key expired while generating request'));
           } else {

src/events.ts

@@ -40,6 +40,7 @@ import type {
   InterstitialsUpdatedData,
   KeyLoadedData,
   KeyLoadingData,
+  KeyStatusesChangedData,
   LevelLoadedData,
   LevelLoadingData,
   LevelPTSUpdatedData,
@@ -220,6 +221,8 @@ export enum Events {
   PLAYOUT_LIMIT_REACHED = 'hlsPlayoutLimitReached',
   // Event DateRange cue "enter" event dispatched
   EVENT_CUE_ENTER = 'hlsEventCueEnter',
+  // HD DRM
+  KEY_STATUSES_CHANGED = 'hlsKeyStatusesChanged',
 }
 
 /**
@@ -496,6 +499,10 @@ export interface HlsListeners {
     data: {},
   ) => void;
   [Events.EVENT_CUE_ENTER]: (event: Events.EVENT_CUE_ENTER, data: {}) => void;
+  [Events.KEY_STATUSES_CHANGED]: (
+    event: Events.KEY_STATUSES_CHANGED,
+    data: KeyStatusesChangedData,
+  ) => void;
 }
 export interface HlsEventEmitter {
   on<E extends keyof HlsListeners, Context = undefined>(

src/hls.ts

@@ -1417,6 +1417,7 @@ export type {
   BufferFlushingData,
   CuesParsedData,
   ErrorData,
+  KeyStatusesChangedData,
   FPSDropData,
   FPSDropLevelCappingData,
   FragBufferedData,

src/types/events.ts

@@ -252,6 +252,11 @@ export interface LevelPTSUpdatedData {
   end: number;
 }
 
+export interface KeyStatusesChangedData {
+  keySystem: string;
+  keyStatuses: MediaKeyStatusMap;
+}
+
 export interface AudioTrackSwitchingData extends MediaPlaylist {}
 
 export interface AudioTrackSwitchedData extends MediaPlaylist {}