eme-encryption-scheme-polyfill - npm Package Compare versions

Comparing version 1.0.0 to 1.0.1

dist/eme-encryption-scheme-polyfill.js

 /*!
+ * @license
  * EME Encryption Scheme Polyfill
- * @license Apache-2.0
- * Copyright 2019 Google LLC */
+ * Copyright 2019 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).EncryptionSchemePolyfill=e()}}(function(){var e={};function i(e,i,t){return t?i?i(e):e:(e&&e.then||(e=Promise.resolve(e)),i?e.then(i):e)}var t=function(){function e(){}return e.install=function(){navigator.requestMediaKeySystemAccess&&MediaKeySystemAccess.prototype.getConfiguration&&(e.originalRMKSA_=navigator.requestMediaKeySystemAccess,navigator.requestMediaKeySystemAccess=e.probeRMKSA_)},e.guessSupportedScheme_=function(e){return e.startsWith("com.widevine")?"cenc":e.startsWith("com.microsoft")?"cenc":e.startsWith("com.adobe")?"cenc":e.startsWith("org.w3")?"cenc":e.startsWith("com.apple")?"cbcs-recommended":(console.warn("EmeEncryptionSchemePolyfill: Unknown key system:",e,"Please contribute!"),null)},e.probeRMKSA_=function(t,r){try{var n=this;return i(e.originalRMKSA_.call(n,t,r),function(i){var a=i.getConfiguration(),o=a.videoCapabilities&&a.videoCapabilities[0],s=a.audioCapabilities&&a.audioCapabilities[0];return void 0!==(o||s).encryptionScheme?(navigator.requestMediaKeySystemAccess=e.originalRMKSA_,i):(navigator.requestMediaKeySystemAccess=e.polyfillRMKSA_,e.polyfillRMKSA_.call(n,t,r))})}catch(a){return Promise.reject(a)}},e.polyfillRMKSA_=function(t,n){try{var a=e.guessSupportedScheme_(t),o=[],s=n,l=Array.isArray(s),c=0;for(s=l?s:s[Symbol.iterator]();;){var u;if(l){if(c>=s.length)break;u=s[c++]}else{if((c=s.next()).done)break;u=c.value}var f=u,p=e.filterCapabilities_(f.videoCapabilities,a),d=e.filterCapabilities_(f.audioCapabilities,a);if(f.videoCapabilities&&f.videoCapabilities.length&&!p.length)return;if(f.audioCapabilities&&f.audioCapabilities.length&&!d.length)return;var y=Object.assign({},f);y.videoCapabilities=p,y.audioCapabilities=d,o.push(y)}if(!o.length){var m=new Error("Unsupported keySystem or supportedConfigurations.");throw m.name="NotSupportedError",m.code=DOMException.NOT_SUPPORTED_ERR,m}return i(e.originalRMKSA_.call(this,t,o),function(e){return new r(e,a)})}catch(h){return Promise.reject(h)}},e.filterCapabilities_=function(e,i){return e?e.filter(function(e){return!e.encryptionScheme||e.encryptionScheme==i}):e},e}(),r=function(){function e(e,i){this.mksa_=e,this.scheme_=i,this.keySystem=e.keySystem}var i=e.prototype;return i.getConfiguration=function(){var e=this.mksa_.getConfiguration();if(e.videoCapabilities){var i=e.videoCapabilities,t=Array.isArray(i),r=0;for(i=t?i:i[Symbol.iterator]();;){var n;if(t){if(r>=i.length)break;n=i[r++]}else{if((r=i.next()).done)break;n=r.value}n.encryptionScheme=this.scheme_}}if(e.audioCapabilities){var a=e.audioCapabilities,o=Array.isArray(a),s=0;for(a=o?a:a[Symbol.iterator]();;){var l;if(o){if(s>=a.length)break;l=a[s++]}else{if((s=a.next()).done)break;l=s.value}l.encryptionScheme=this.scheme_}}return e},i.createMediaKeys=function(){return this.mksa_.createMediaKeys()},e}();return t.originalRMKSA_,void 0!==e&&(e=t),e});
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).EmeEncryptionSchemePolyfill=e()}}(function(){var e={exports:{}};function i(e,i,t){return t?i?i(e):e:(e&&e.then||(e=Promise.resolve(e)),i?e.then(i):e)}var t=function(){function e(){}return e.install=function(){navigator.requestMediaKeySystemAccess&&MediaKeySystemAccess.prototype.getConfiguration&&(e.originalRMKSA_=navigator.requestMediaKeySystemAccess,navigator.requestMediaKeySystemAccess=e.probeRMKSA_)},e.guessSupportedScheme_=function(e){return e.startsWith("com.widevine")?"cenc":e.startsWith("com.microsoft")?"cenc":e.startsWith("com.adobe")?"cenc":e.startsWith("org.w3")?"cenc":e.startsWith("com.apple")?"cbcs-recommended":(console.warn("EmeEncryptionSchemePolyfill: Unknown key system:",e,"Please contribute!"),null)},e.probeRMKSA_=function(t,r){try{var n=this;return i(e.originalRMKSA_.call(n,t,r),function(i){var o=i.getConfiguration(),a=o.videoCapabilities&&o.videoCapabilities[0],s=o.audioCapabilities&&o.audioCapabilities[0];return void 0!==(a||s).encryptionScheme?(navigator.requestMediaKeySystemAccess=e.originalRMKSA_,i):(navigator.requestMediaKeySystemAccess=e.polyfillRMKSA_,e.polyfillRMKSA_.call(n,t,r))})}catch(o){return Promise.reject(o)}},e.polyfillRMKSA_=function(t,n){try{var o=e.guessSupportedScheme_(t),a=[],s=n,l=Array.isArray(s),c=0;for(s=l?s:s[Symbol.iterator]();;){var u;if(l){if(c>=s.length)break;u=s[c++]}else{if((c=s.next()).done)break;u=c.value}var f=u,p=e.filterCapabilities_(f.videoCapabilities,o),d=e.filterCapabilities_(f.audioCapabilities,o);if(f.videoCapabilities&&f.videoCapabilities.length&&!p.length);else if(f.audioCapabilities&&f.audioCapabilities.length&&!d.length);else{var y=Object.assign({},f);y.videoCapabilities=p,y.audioCapabilities=d,a.push(y)}}if(!a.length){var m=new Error("Unsupported keySystem or supportedConfigurations.");throw m.name="NotSupportedError",m.code=DOMException.NOT_SUPPORTED_ERR,m}return i(e.originalRMKSA_.call(this,t,a),function(e){return new r(e,o)})}catch(h){return Promise.reject(h)}},e.filterCapabilities_=function(e,i){return e?e.filter(function(e){return!e.encryptionScheme||e.encryptionScheme==i}):e},e}(),r=function(){function e(e,i){this.mksa_=e,this.scheme_=i,this.keySystem=e.keySystem}var i=e.prototype;return i.getConfiguration=function(){var e=this.mksa_.getConfiguration();if(e.videoCapabilities){var i=e.videoCapabilities,t=Array.isArray(i),r=0;for(i=t?i:i[Symbol.iterator]();;){var n;if(t){if(r>=i.length)break;n=i[r++]}else{if((r=i.next()).done)break;n=r.value}n.encryptionScheme=this.scheme_}}if(e.audioCapabilities){var o=e.audioCapabilities,a=Array.isArray(o),s=0;for(o=a?o:o[Symbol.iterator]();;){var l;if(a){if(s>=o.length)break;l=o[s++]}else{if((s=o.next()).done)break;l=s.value}l.encryptionScheme=this.scheme_}}return e},i.createMediaKeys=function(){return this.mksa_.createMediaKeys()},e}();return t.originalRMKSA_,e.exports&&(e.exports=t),e=e.exports});

index.js

 /*!
+ * @license
  * EME Encryption Scheme Polyfill
- * @license Apache-2.0
- * Copyright 2019 Google LLC */
-// This special header is retained in minified bundle, and only adds ~100 bytes.
-
-/**
  * Copyright 2019 Google LLC
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * SPDX-License-Identifier: Apache-2.0
  */
+// This special header is retained in minified bundle, and only adds ~120 bytes.
 
@@ -30,4 +16,4 @@ /**
  *
- * In source form, this is compatible with the Closure Compiler and the CommonJS
- * module format.  It can also be directly included via a script tag.
+ * In source form, this is compatible with the Closure Compiler, CommonJS, and
+ * AMD module formats.  It can also be directly included via a script tag.
  *
@@ -137,3 +123,3 @@ * The minified bundle is a standalone module compatible with the CommonJS and
     // specified in the supportedConfigurations given by the application.
-    if (firstCapability.encryptionScheme !== undefined) {
+    if (firstCapability['encryptionScheme'] !== undefined) {
       // The browser supports the encryptionScheme field!
@@ -204,5 +190,3 @@ // No need for a patch.  Revert back to the original implementation.
         // is unusable.
-        continue;
-      }
-      if (configuration.audioCapabilities &&
+      } else if (configuration.audioCapabilities &&
           configuration.audioCapabilities.length &&
@@ -212,11 +196,11 @@ !filteredAudioCapabilities.length) {
         // is unusable.
-        continue;
+      } else {
+        // Recreate a clone of the configuration and modify that.  This way, we
+        // don't modify the application-provided config objects.
+        /** @type {!MediaKeySystemConfiguration} */
+        const clonedConfiguration = Object.assign({}, configuration);
+        clonedConfiguration.videoCapabilities = filteredVideoCapabilities;
+        clonedConfiguration.audioCapabilities = filteredAudioCapabilities;
+        filteredSupportedConfigurations.push(clonedConfiguration);
       }
-
-      // Recreate a clone of the configuration and modify that.  This way, we
-      // don't modify the application-provided config objects.
-      const clonedConfiguration = Object.assign({}, configuration);
-      clonedConfiguration.videoCapabilities = filteredVideoCapabilities;
-      clonedConfiguration.audioCapabilities = filteredAudioCapabilities;
-      filteredSupportedConfigurations.push(clonedConfiguration);
     }
@@ -234,3 +218,3 @@
       unsupportedError.name = 'NotSupportedError';
-      unsupportedError.code = DOMException.NOT_SUPPORTED_ERR;
+      unsupportedError['code'] = DOMException.NOT_SUPPORTED_ERR;
       throw unsupportedError;
@@ -253,7 +237,7 @@ }
    *
-   * @param {!Array.<MediaKeySystemMediaCapability>|undefined} capabilities
+   * @param {!Array.<!MediaKeySystemMediaCapability>|undefined} capabilities
    *   An array of capabilities, or null or undefined.
    * @param {?string} supportedScheme The encryption scheme that we think is
    *   supported by the key system.
-   * @return {!Array.<MediaKeySystemMediaCapability>|undefined} A filtered
+   * @return {!Array.<!MediaKeySystemMediaCapability>|undefined} A filtered
    *   array of capabilities based on |supportedScheme|.  May be undefined if
@@ -271,4 +255,4 @@ *   the input was undefined.
       // scheme we guessed for this UA.
-      return !capability.encryptionScheme ||
-          capability.encryptionScheme == supportedScheme;
+      return !capability['encryptionScheme'] ||
+          capability['encryptionScheme'] == supportedScheme;
     });
@@ -318,3 +302,3 @@ }
       for (const capability of configuration.videoCapabilities) {
-        capability.encryptionScheme = this.scheme_;
+        capability['encryptionScheme'] = this.scheme_;
       }
@@ -325,3 +309,3 @@ }
       for (const capability of configuration.audioCapabilities) {
-        capability.encryptionScheme = this.scheme_;
+        capability['encryptionScheme'] = this.scheme_;
       }
@@ -352,9 +336,8 @@ }
 
-// Support for CommonJS module format.
+// Support for CommonJS and AMD module formats.
 /** @suppress {undefinedVars} */
 (() => {
-  if (typeof exports !== 'undefined') {
-    // eslint-disable-next-line no-undef
-    exports = EmeEncryptionSchemePolyfill;
+  if (typeof module !== 'undefined' && module.exports) {
+    module.exports = EmeEncryptionSchemePolyfill;
   }
 })();

package.json

 {
   "name": "eme-encryption-scheme-polyfill",
   "description": "A polyfill for the encryptionScheme field in EME",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "license": "Apache-2.0",
@@ -19,4 +19,5 @@ "author": "Google",
     "lint": "eslint index.js",
-    "build": "browserify index.js -s EncryptionSchemePolyfill -t babelify -t stripify -p tinyify -p browserify-header -o dist/eme-encryption-scheme-polyfill.js",
-    "prepublishOnly": "npm run-script lint && npm run-script build"
+    "closure-compiler-check": "google-closure-compiler -O ADVANCED --generate_exports --js_output_file /dev/null --jscomp_error '*' closure-compiler-check/* index.js",
+    "build": "browserify index.js -s EmeEncryptionSchemePolyfill -t babelify -t stripify -p tinyify -p browserify-header -o dist/eme-encryption-scheme-polyfill.js",
+    "prepublishOnly": "npm run-script lint && npm run-script closure-compiler-check && npm run-script build"
   },
@@ -33,2 +34,3 @@ "devDependencies": {
     "eslint-plugin-jsdoc": "^18.0.1",
+    "google-closure-compiler": "latest",
     "stripify": "^6.0.0",
@@ -35,0 +37,0 @@ "tinyify": "^2.5.2"

README.md

@@ -5,4 +5,5 @@ # EME Encryption Scheme Polyfill
 
-https://wicg.github.io/encrypted-media-encryption-scheme/
-https://github.com/WICG/encrypted-media-encryption-scheme/issues/13
+ - https://wicg.github.io/encrypted-media-encryption-scheme/
+ - https://google.github.io/eme-encryption-scheme-polyfill/demo/
+ - https://github.com/WICG/encrypted-media-encryption-scheme/issues/13
 
@@ -9,0 +10,0 @@ Because this polyfill can't know what schemes the UA or CDM actually support,

No alert changes

Improved metrics

Total package byte prevSize

30525

increased by0.76%

Number of package files

6

increased by20%

Number of lines in readme file

39

increased by2.63%

Worsened metrics

Dev dependency count

12

increased by9.09%

Lines of code

306

decreased by-4.08%

No dependency changes