feat: Progress toward FairPlay DRM w/ MSE (#3347)

Related to: #3346
shaka-project · May 5, 2021 · 46b1cfa · 46b1cfa
1 parent bf51b4b
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Showing 4 changed files with 76 additions and 20 deletions.
diff --git a/demo/main.js b/demo/main.js
@@ -1739,7 +1739,7 @@ shakaDemo.Main = class {
 shakaDemo.Main.commonDrmSystems = [
   'com.widevine.alpha',
   'com.microsoft.playready',
-  'com.apple.fps.1_0',
+  'com.apple.fps',
   'com.adobe.primetime',
   'org.w3.clearkey',
 ];

diff --git a/lib/media/drm_engine.js b/lib/media/drm_engine.js
@@ -630,6 +630,17 @@ shaka.media.DrmEngine = class {
     return false;
   }
 
+  /**
+   * @param {?string} keySystem
+   * @return {boolean} */
+  static isFairPlayKeySystem(keySystem) {
+    if (keySystem) {
+      return !!keySystem.match(/^com\.apple\.fps/);
+    }
+
+    return false;
+  }
+
   /**
    * Check if DrmEngine (as initialized) will likely be able to support the
    * given content type.
@@ -827,6 +838,14 @@ shaka.media.DrmEngine = class {
             ];
           }
 
+          // FairPlay does not support distinctiveIdentifier, persistentState
+          // and also only supports temporary sessions.
+          if (shaka.media.DrmEngine.isFairPlayKeySystem(info.keySystem)) {
+            config.distinctiveIdentifier = 'not-allowed';
+            config.persistentState = 'not-allowed';
+            config.sessionTypes = ['temporary'];
+          }
+
           if (info.distinctiveIdentifierRequired) {
             config.distinctiveIdentifier = 'required';
           }

diff --git a/lib/player.js b/lib/player.js
@@ -1142,24 +1142,7 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
     if (!mimeType) {
       // Try using the uri extension.
       const extension = shaka.media.ManifestParser.getExtension(uri);
-      mimeType = {
-        'mp4': 'video/mp4',
-        'm4v': 'video/mp4',
-        'm4a': 'audio/mp4',
-        'webm': 'video/webm',
-        'weba': 'audio/webm',
-        'mkv': 'video/webm', // Chromium browsers supports it.
-        'ts': 'video/mp2t',
-        'ogv': 'video/ogg',
-        'ogg': 'audio/ogg',
-        'mpg': 'video/mpeg',
-        'mpeg': 'video/mpeg',
-        'm3u8': 'application/x-mpegurl',
-        'mp3': 'audio/mpeg',
-        'aac': 'audio/aac',
-        'flac': 'audio/flac',
-        'wav': 'audio/wav',
-      }[extension];
+      mimeType = shaka.Player.SRC_EQUAL_EXTENSIONS_TO_MIME_TYPES_[extension];
     }
 
     // TODO: The load graph system has a design limitation that requires routing
@@ -2000,6 +1983,16 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
 
     this.drmEngine_.configure(this.config_.drm);
 
+    const uri = has.uri || '';
+    const extension = shaka.media.ManifestParser.getExtension(uri);
+    let mimeType = shaka.Player.SRC_EQUAL_EXTENSIONS_TO_MIME_TYPES_[extension];
+    if (mimeType == 'application/x-mpegurl' && shaka.util.Platform.isApple()) {
+      mimeType = 'application/vnd.apple.mpegurl';
+    }
+    if (!mimeType) {
+      mimeType = 'video/mp4';
+    }
+
     // TODO: Instead of feeding DrmEngine with Variants, we should refactor
     // DrmEngine so that it takes a minimal config derived from Variants.  In
     // cases like this one or in removal of stored content, the details are
@@ -2020,7 +2013,7 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
         createSegmentIndex: () => Promise.resolve(),
         segmentIndex: null,
         mimeType: wants.mimeType ?
-            shaka.util.MimeUtils.getBasicType(wants.mimeType) : 'video/mp4',
+            shaka.util.MimeUtils.getBasicType(wants.mimeType) : mimeType,
         codecs: wants.mimeType ?
             shaka.util.MimeUtils.getCodecs(wants.mimeType) : '',
         encrypted: true,
@@ -6074,6 +6067,30 @@ shaka.Player.supportPlugins_ = {};
 shaka.Player.adManagerFactory_ = null;
 
 
+/**
+ * @const {!Object.<string, string>}
+ * @private
+ */
+shaka.Player.SRC_EQUAL_EXTENSIONS_TO_MIME_TYPES_ = {
+  'mp4': 'video/mp4',
+  'm4v': 'video/mp4',
+  'm4a': 'audio/mp4',
+  'webm': 'video/webm',
+  'weba': 'audio/webm',
+  'mkv': 'video/webm', // Chromium browsers supports it.
+  'ts': 'video/mp2t',
+  'ogv': 'video/ogg',
+  'ogg': 'audio/ogg',
+  'mpg': 'video/mpeg',
+  'mpeg': 'video/mpeg',
+  'm3u8': 'application/x-mpegurl',
+  'mp3': 'audio/mpeg',
+  'aac': 'audio/aac',
+  'flac': 'audio/flac',
+  'wav': 'audio/wav',
+};
+
+
 /**
  * @const {string}
  */

diff --git a/test/media/drm_engine_unit.js b/test/media/drm_engine_unit.js
@@ -2250,6 +2250,26 @@ function testDrmEngine(useMediaCapabilities) {
     });
   });
 
+  describe('isFairPlayKeySystem', () => {
+    it('should return true for FairPlay', () => {
+      expect(shaka.media.DrmEngine.isFairPlayKeySystem(
+          'com.apple.fps')).toBe(true);
+      expect(shaka.media.DrmEngine.isFairPlayKeySystem(
+          'com.apple.fps.1_0')).toBe(true);
+      expect(shaka.media.DrmEngine.isFairPlayKeySystem(
+          'com.apple.fps.2_0')).toBe(true);
+      expect(shaka.media.DrmEngine.isFairPlayKeySystem(
+          'com.apple.fps.3_0')).toBe(true);
+    });
+
+    it('should return false for non-FairPlay key systems', () => {
+      expect(shaka.media.DrmEngine.isFairPlayKeySystem(
+          'com.widevine.alpha')).toBe(false);
+      expect(shaka.media.DrmEngine.isFairPlayKeySystem(
+          'com.abc.playready')).toBe(false);
+    });
+  });
+
   describe('getDrmInfo', () => {
     it('includes correct info', async () => {
       // Leave only one drmInfo