feat(MediaCap): Add config for using MediaCapabilities

The developers should be able to set the config to use
MediaCapabilities.
If set to true, we'll use mediaCapabilities.decodingInfo() to
get the variants' decodingInfo.
If set to false, we'll fallback to use
MediaSource.isTypeSupported() and
navigator.requestMediaKeyAccess().

Issue shaka-project#1391

Change-Id: I1acbfb12780291e998d56a91156ae2c47a87c7ae

demo/common/message_ids.js

@@ -225,6 +225,7 @@ shakaDemo.MessageIds = {
   TRICK_PLAY_CONTROLS_WARNING: 'DEMO_TRICK_PLAY_CONTROLS_WARNING',
   UI_LOCALE: 'DEMO_UI_LOCALE',
   UPDATE_EXPIRATION_TIME: 'DEMO_UPDATE_EXPIRATION_TIME',
+  USE_MEDIA_CAPABILITIES: 'DEMO_USE_MEDIA_CAPABILITIES',
   USE_NATIVE_HLS_SAFARI: 'DEMO_USE_NATIVE_HLS_SAFARI',
   USE_PERSISTENT_LICENSES: 'DEMO_USE_PERSISTENT_LICENSES',
   VIDEO_ROBUSTNESS: 'DEMO_VIDEO_ROBUSTNESS',

demo/config.js

@@ -334,7 +334,9 @@ shakaDemo.Config = class {
         .addBoolInput_(MessageIds.FORCE_HTTPS,
             'streaming.forceHTTPS')
         .addBoolInput_(MessageIds.PREFER_NATIVE_HLS,
-            'streaming.preferNativeHls');
+            'streaming.preferNativeHls')
+        .addBoolInput_(MessageIds.USE_MEDIA_CAPABILITIES,
+            'useMediaCapabilities');
 
     if (!shakaDemoMain.getNativeControlsEnabled()) {
       this.addBoolInput_(MessageIds.ALWAYS_STREAM_TEXT,

demo/locales/en.json

@@ -125,6 +125,7 @@
   "DEMO_MAX_PIXELS": "Max Pixels",
   "DEMO_MAX_SMALL_GAP_SIZE": "Maximum Small Gap Size",
   "DEMO_MAX_WIDTH": "Max Width",
+  "DEMO_USE_MEDIA_CAPABILITIES": "Use MediaCapabilities",
   "DEMO_MICROSOFT": "Microsoft",
   "DEMO_MIN_BANDWIDTH": "Min Bandwidth",
   "DEMO_MIN_FRAMERATE": "Min Framerate",

demo/locales/source.json

@@ -503,6 +503,10 @@
     "description": "The name of a configuration value.",
     "message": "Max Width"
   },
+  "DEMO_USE_MEDIA_CAPABILITIES": {
+    "description": "The name of a configuration value.",
+    "message": "Use [JARGON:MediaCapabilities]"
+  },
   "DEMO_MICROSOFT": {
     "description": "Text that describes an asset that comes from the Microsoft.",
     "message": "[PROPER_NAME:Microsoft]"

externs/shaka/player.js

@@ -967,7 +967,8 @@ shaka.extern.OfflineConfiguration;
  *   restrictions: shaka.extern.Restrictions,
  *   playRangeStart: number,
  *   playRangeEnd: number,
- *   textDisplayFactory: shaka.extern.TextDisplayer.Factory
+ *   textDisplayFactory: shaka.extern.TextDisplayer.Factory,
+ *   useMediaCapabilities: boolean
  * }}
  *
  * @property {shaka.extern.DrmConfiguration} drm
@@ -1016,6 +1017,9 @@ shaka.extern.OfflineConfiguration;
  * @property {shaka.extern.TextDisplayer.Factory} textDisplayFactory
  *   A factory to construct a text displayer. Note that, if this is changed
  *   during playback, it will cause the text tracks to be reloaded.
+ * @property {boolean} useMediaCapabilities
+ *   If true, use MediaCapabilities.decodingInfo() to filter the manifest, and
+ *   get MediaKeys information for encrypted content. Default to false.
  * @exportDoc
  */
 shaka.extern.PlayerConfiguration;

lib/util/player_configuration.js

@@ -245,6 +245,7 @@ shaka.util.PlayerConfiguration = class {
       },
       playRangeStart: 0,
       playRangeEnd: Infinity,
+      useMediaCapabilities: false,
       textDisplayFactory: () => null,
     };