add configuration value to enable keeping the samle instance of MediaKeys during MediaPlayer lifetime

Author: bbert

build/typings/index.d.ts

@@ -256,6 +256,7 @@ declare namespace dashjs {
         setManifestUpdateRetryInterval(value: number): void;        
         getManifestUpdateRetryInterval(): number;
         setSegmentOverlapToleranceTime(value: number): void;
+        keepProtectionMediaKeys(value: boolean): void;
     }
 
     export interface MediaPlayerFactory {

src/streaming/MediaPlayer.js

@@ -2484,6 +2484,28 @@ function MediaPlayer() {
         return thumbnailController.get(timeInPeriod);
     }
 
+    /*
+    ---------------------------------------------------------------------------
+
+        PROTECTION CONTROLLER MANAGEMENT
+
+    ---------------------------------------------------------------------------
+    */
+
+    /**
+     * Set the value for the ProtectionController and MediaKeys life cycle. If true, the
+     * ProtectionController and then created MediaKeys and MediaKeySessions will be preserved during
+     * the MediaPlayer lifetime.
+     *
+     * @param {boolean=} value - True or false flag.
+     *
+     * @memberof module:MediaPlayer
+     * @instance
+     */
+    function keepProtectionMediaKeys(value) {
+        mediaPlayerModel.setKeepProtectionMediaKeys(value);
+    }
+
     /*
     ---------------------------------------------------------------------------
 
@@ -3006,6 +3028,7 @@ function MediaPlayer() {
         getUseDeadTimeLatencyForAbr: getUseDeadTimeLatencyForAbr,
         setUseDeadTimeLatencyForAbr: setUseDeadTimeLatencyForAbr,
         getThumbnail: getThumbnail,
+        keepProtectionMediaKeys: keepProtectionMediaKeys,
         reset: reset
     };
 

src/streaming/models/MediaPlayerModel.js

@@ -114,7 +114,8 @@ function MediaPlayerModel() {
         jumpGaps,
         smallGapLimit,
         lowLatencyEnabled,
-        manifestUpdateRetryInterval;
+        manifestUpdateRetryInterval,
+        keepProtectionMediaKeys;
 
     function setup() {
         UTCTimingSources = [];
@@ -533,6 +534,14 @@ function MediaPlayerModel() {
         return manifestUpdateRetryInterval;
     }
 
+    function setKeepProtectionMediaKeys(value) {
+        keepProtectionMediaKeys = value;
+    }
+
+    function getKeepProtectionMediaKeys() {
+        return keepProtectionMediaKeys;
+    }
+
     function reset() {
         //TODO need to figure out what props to persist across sessions and which to reset if any.
         //setup();
@@ -613,6 +622,8 @@ function MediaPlayerModel() {
         setLowLatencyEnabled: setLowLatencyEnabled,
         setManifestUpdateRetryInterval: setManifestUpdateRetryInterval,
         getManifestUpdateRetryInterval: getManifestUpdateRetryInterval,
+        setKeepProtectionMediaKeys: setKeepProtectionMediaKeys,
+        getKeepProtectionMediaKeys: getKeepProtectionMediaKeys,
         reset: reset
     };