fix: Work around override of MediaCapabilities polyfill in Apple brow…

…sers (shaka-project#3668) See also shaka-project#3696 Closes shaka-project#3530 Change-Id: Ied2e644f8a5d170ef70386dc2a39b51fc95a691f
tecteun · Feb 10, 2022 · cd29ab4 · cd29ab4
1 parent 0cc6aa0
commit cd29ab4
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Showing 5 changed files with 28 additions and 12 deletions.
diff --git a/externs/media_capabilities.js b/externs/media_capabilities.js
@@ -0,0 +1,16 @@
+/*! @license
+ * Shaka Player
+ * Copyright 2016 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @fileoverview Externs for Shaka MediaCapabilities which were missing in the
+ * Closure compiler.
+ *
+ * @externs
+ */
+
+
+/** @type {MediaCapabilities} */
+window.shakaMediaCapabilities;
diff --git a/lib/util/stream_utils.js b/lib/util/stream_utils.js
@@ -416,7 +416,7 @@ shaka.util.StreamUtils = class {
    */
   static async filterManifestByMediaCapabilities(
       manifest, usePersistentLicenses) {
-    goog.asserts.assert(navigator.mediaCapabilities,
+    goog.asserts.assert(window.shakaMediaCapabilities,
         'MediaCapabilities should be valid.');
 
     await shaka.util.StreamUtils.getDecodingInfosForVariants(
@@ -500,7 +500,7 @@ shaka.util.StreamUtils = class {
       return;
     }
 
-    const mediaCapabilities = navigator.mediaCapabilities;
+    const mediaCapabilities = window.shakaMediaCapabilities;
 
     const operations = [];
     const getVariantDecodingInfos = (async (variant, decodingConfig) => {

diff --git a/test/media/drm_engine_unit.js b/test/media/drm_engine_unit.js
@@ -31,7 +31,7 @@ describe('DrmEngine', () => {
       navigator.requestMediaKeySystemAccess;
   const originalLogError = shaka.log.error;
   const originalBatchTime = shaka.media.DrmEngine.KEY_STATUS_BATCH_TIME;
-  const originalDecodingInfo = navigator.mediaCapabilities.decodingInfo;
+  const originalDecodingInfo = window.shakaMediaCapabilities.decodingInfo;
 
   /** @type {!jasmine.Spy} */
   let decodingInfoSpy;
@@ -76,7 +76,7 @@ describe('DrmEngine', () => {
 
   beforeEach(() => {
     decodingInfoSpy = jasmine.createSpy('decodingInfo');
-    navigator.mediaCapabilities.decodingInfo =
+    window.shakaMediaCapabilities.decodingInfo =
         shaka.test.Util.spyFunc(decodingInfoSpy);
 
     logErrorSpy = jasmine.createSpy('shaka.log.error');
@@ -153,7 +153,7 @@ describe('DrmEngine', () => {
 
     navigator.requestMediaKeySystemAccess =
         originalRequestMediaKeySystemAccess;
-    navigator.mediaCapabilities.decodingInfo = originalDecodingInfo;
+    window.shakaMediaCapabilities.decodingInfo = originalDecodingInfo;
     shaka.log.error = originalLogError;
   });
 

diff --git a/test/player_unit.js b/test/player_unit.js
@@ -36,7 +36,7 @@ describe('Player', () => {
   const originalLogWarn = shaka.log.warning;
   const originalLogAlwaysWarn = shaka.log.alwaysWarn;
   const originalIsTypeSupported = window.MediaSource.isTypeSupported;
-  const originalDecodingInfo = navigator.mediaCapabilities.decodingInfo;
+  const originalDecodingInfo = window.shakaMediaCapabilities.decodingInfo;
 
   const fakeManifestUri = 'fake-manifest-uri';
   const fakeMimeType = 'application/test';
@@ -93,7 +93,7 @@ describe('Player', () => {
     // Since this is not an integration test, we don't want MediaCapabilities to
     // fail assertions based on browser support for types.  Pretend that all
     // video and audio types are supported.
-    navigator.mediaCapabilities.decodingInfo = async (config) => {
+    window.shakaMediaCapabilities.decodingInfo = async (config) => {
       await Promise.resolve();
       const videoType = config['video'] ?
           config['video'].contentType.split('/')[0] : null;
@@ -177,7 +177,7 @@ describe('Player', () => {
       shaka.log.alwaysWarn = originalLogAlwaysWarn;
       window.MediaSource.isTypeSupported = originalIsTypeSupported;
       shaka.media.ManifestParser.unregisterParserByMime(fakeMimeType);
-      navigator.mediaCapabilities.decodingInfo = originalDecodingInfo;
+      window.shakaMediaCapabilities.decodingInfo = originalDecodingInfo;
     }
   });
 
@@ -2463,7 +2463,7 @@ describe('Player', () => {
     it('throws CONTENT_UNSUPPORTED_BY_BROWSER', async () => {
       window.MediaSource.isTypeSupported = (mimeType) => false;
 
-      navigator.mediaCapabilities.decodingInfo = async (config) => {
+      window.shakaMediaCapabilities.decodingInfo = async (config) => {
         await Promise.resolve();
         return {supported: false};
       };

diff --git a/test/util/stream_utils_unit.js b/test/util/stream_utils_unit.js
@@ -16,14 +16,14 @@ describe('StreamUtils', () => {
   /** @type {!jasmine.Spy} */
   let decodingInfoSpy;
 
-  const originalDecodingInfo = navigator.mediaCapabilities.decodingInfo;
+  const originalDecodingInfo = window.shakaMediaCapabilities.decodingInfo;
 
   beforeEach(() => {
     decodingInfoSpy = jasmine.createSpy('decodingInfo');
   });
 
   afterEach(() => {
-    navigator.mediaCapabilities.decodingInfo = originalDecodingInfo;
+    window.shakaMediaCapabilities.decodingInfo = originalDecodingInfo;
   });
 
   describe('filterStreamsByLanguageAndRole', () => {
@@ -511,7 +511,7 @@ describe('StreamUtils', () => {
     });
 
     it('handles decodingInfo exception', async () => {
-      navigator.mediaCapabilities.decodingInfo =
+      window.shakaMediaCapabilities.decodingInfo =
           shaka.test.Util.spyFunc(decodingInfoSpy);
       // If decodingInfo() fails, setDecodingInfo should finish without throwing
       // an exception, and the variant should have no decodingInfo result.