| // Copyright 2020 The Cobalt Authors. All Rights Reserved. |
| // |
| // 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 |
| // |
| // http://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. |
| |
| function getRepresentation(keySystem, audioMime, videoMime, encryptionScheme) { |
| var representation = keySystem; |
| if (typeof audioMime !== 'undefined') { |
| representation += ', ' + audioMime; |
| } |
| if (typeof videoMime !== 'undefined') { |
| representation += ', ' + videoMime; |
| } |
| if (typeof encryptionScheme !== 'undefined') { |
| representation += ', encryptionscheme="' + encryptionScheme + '"'; |
| } |
| return representation; |
| } |
| |
| function checkForSupport(keySystem, audioMime, videoMime, encryptionScheme, |
| expectedResult) { |
| var configs = [{ |
| initDataTypes: ['cenc', 'sinf', 'webm'], |
| audioCapabilities: [], |
| videoCapabilities: [], |
| }]; |
| if (typeof audioMime !== 'undefined') { |
| configs[0].audioCapabilities.push( |
| {contentType: audioMime, encryptionScheme: encryptionScheme}); |
| } |
| if (typeof videoMime !== 'undefined') { |
| configs[0].videoCapabilities.push( |
| {contentType: videoMime, encryptionScheme: encryptionScheme}); |
| } |
| var representation = getRepresentation(keySystem, audioMime, videoMime, |
| encryptionScheme); |
| navigator.requestMediaKeySystemAccess(keySystem, configs) |
| .then(onKeySystemAccess.bind(this, representation, expectedResult), |
| onFailure.bind(this, representation, expectedResult)); |
| } |
| |
| function addQueryResult(query, result, expectedResult) { |
| var row = document.createElement('div'); |
| |
| var cell = document.createElement('span'); |
| cell.className = 'query'; |
| cell.textContent = query + ' => '; |
| row.appendChild(cell); |
| |
| cell = document.createElement('span'); |
| cell.className = result == expectedResult ? 'result-success' : |
| 'result-failure'; |
| cell.textContent = result; |
| row.appendChild(cell); |
| |
| document.body.appendChild(row); |
| } |
| |
| function onKeySystemAccess(representation, expectedResult, keySystemAccess) { |
| addQueryResult(representation, 'supported', expectedResult); |
| } |
| |
| function onFailure(representation, expectedResult) { |
| addQueryResult(representation, 'not supported', expectedResult); |
| } |
| |
| checkForSupport('com.widevine.alpha.invalid', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, undefined, 'not supported'); |
| checkForSupport('com.widevine.alpha.invalid', undefined, |
| 'video/webm; codecs="vp9"', undefined, 'not supported'); |
| |
| // 'invalid-scheme' is not a valid scheme. |
| checkForSupport('com.widevine.alpha', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, 'invalid-scheme', 'not supported'); |
| checkForSupport('com.widevine.alpha', undefined, 'video/webm; codecs="vp9"', |
| 'invalid-scheme', 'not supported'); |
| |
| checkForSupport('com.widevine.alpha', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, undefined, 'supported'); |
| checkForSupport('com.widevine.alpha', undefined, 'video/webm; codecs="vp9"', |
| undefined, 'supported'); |
| |
| // Empty string is not a valid scheme. |
| checkForSupport('com.widevine.alpha', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, '', 'not supported'); |
| checkForSupport('com.widevine.alpha', undefined, 'video/webm; codecs="vp9"', |
| '', 'not supported'); |
| |
| checkForSupport('com.widevine.alpha', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, 'cenc', 'supported'); |
| checkForSupport('com.widevine.alpha', undefined, 'video/webm; codecs="vp9"', |
| 'cenc', 'supported'); |
| |
| checkForSupport('com.widevine.alpha', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, 'cbcs', 'supported'); |
| checkForSupport('com.widevine.alpha', undefined, 'video/webm; codecs="vp9"', |
| 'cbcs', 'supported'); |
| |
| checkForSupport('com.widevine.alpha', 'audio/mp4; codecs="mp4a.40.2"', |
| undefined, 'cbcs-1-9', 'supported'); |
| checkForSupport('com.widevine.alpha', undefined, 'video/webm; codecs="vp9"', |
| 'cbcs-1-9', 'supported'); |