mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Vincent Valot
6d76a135e5
Add support for HLS com.apple.streamingkeydelivery through MSE/EME implementation. Close #3346 ## Tests Tested on: - Mac 11.6 Safari 15.2 - iOS 15.2 Safari 15.2 - Mac 11.6 Chrome 96 (for potential regressions on Widevine keySystem) | Mode | DRM API | TS | CMAF (mono-key and multi-keys) |---|---|---|---| | file | EME | ✅ | ✅ | | file | Legacy-prefixed | ✅ | ✅ | | media-source | EME | **mux-js**: `encrypted` never fired<br />**real MSE**: `encrypted` event received, but with incorrect `sinf` initData (*1) | ✅ | | media-source | Legacy-prefixed | **mux-js**: `webkitneedkey` never fired<br/>**real MSE**: TBD | 🔴 fails to append media segment to SourceBuffer (init segment ok) `(video:4) – "failed fetch and append: code=3015"` | ## Support table | Mode | DRM API | TS | CMAF (mono-key and multi-keys) |---|---|---|---| | file | EME | ✅ | ✅ | | file | Legacy-prefixed | ✅ | ✅ | | media-source | EME | 🚫 `4040: HLS_MSE_ENCRYPTED_MP2T_NOT_SUPPORTED` | ✅ | | media-source | Legacy-prefixed | 🚫 `4041: HLS_MSE_ENCRYPTED_LEGACY_APPLE_MEDIA_KEYS_NOT_SUPPORTED` |🚫 `4041: HLS_MSE_ENCRYPTED_LEGACY_APPLE_MEDIA_KEYS_NOT_SUPPORTED` | ⚠️ Use EME APIs with multi-keys CMAF makes the video stalling with the audio continuing alone after a short time (~3 minutes in the stream, could be shorter, could be longer). Didn't find an explanation to that yet. I've observed the same behaviour with hls.js code so I don't think this is a player issue.
2426 lines
79 KiB
JavaScript
2426 lines
79 KiB
JavaScript
/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.media.DrmEngine');
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goog.require('goog.asserts');
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goog.require('shaka.log');
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goog.require('shaka.media.Transmuxer');
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goog.require('shaka.net.NetworkingEngine');
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goog.require('shaka.util.BufferUtils');
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goog.require('shaka.util.Destroyer');
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goog.require('shaka.util.Error');
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goog.require('shaka.util.EventManager');
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goog.require('shaka.util.FairPlayUtils');
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goog.require('shaka.util.FakeEvent');
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goog.require('shaka.util.IDestroyable');
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goog.require('shaka.util.Iterables');
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goog.require('shaka.util.Lazy');
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goog.require('shaka.util.MapUtils');
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goog.require('shaka.util.MimeUtils');
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goog.require('shaka.util.Platform');
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goog.require('shaka.util.PublicPromise');
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goog.require('shaka.util.StreamUtils');
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goog.require('shaka.util.StringUtils');
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goog.require('shaka.util.Timer');
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goog.require('shaka.util.Uint8ArrayUtils');
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/** @implements {shaka.util.IDestroyable} */
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shaka.media.DrmEngine = class {
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/**
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* @param {shaka.media.DrmEngine.PlayerInterface} playerInterface
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* @param {number=} updateExpirationTime
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*/
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constructor(playerInterface, updateExpirationTime = 1) {
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/** @private {?shaka.media.DrmEngine.PlayerInterface} */
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this.playerInterface_ = playerInterface;
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/** @private {!Set.<string>} */
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this.supportedTypes_ = new Set();
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/** @private {MediaKeys} */
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this.mediaKeys_ = null;
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/** @private {HTMLMediaElement} */
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this.video_ = null;
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/** @private {boolean} */
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this.initialized_ = false;
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/** @private {boolean} */
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this.initializedForStorage_ = false;
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/** @private {number} */
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this.licenseTimeSeconds_ = 0;
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/** @private {?shaka.extern.DrmInfo} */
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this.currentDrmInfo_ = null;
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/** @private {shaka.util.EventManager} */
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this.eventManager_ = new shaka.util.EventManager();
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/**
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* @private {!Map.<MediaKeySession,
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* shaka.media.DrmEngine.SessionMetaData>}
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*/
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this.activeSessions_ = new Map();
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/** @private {!Array.<string>} */
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this.offlineSessionIds_ = [];
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/** @private {!shaka.util.PublicPromise} */
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this.allSessionsLoaded_ = new shaka.util.PublicPromise();
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/** @private {?shaka.extern.DrmConfiguration} */
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this.config_ = null;
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/** @private {function(!shaka.util.Error)} */
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this.onError_ = (err) => {
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this.allSessionsLoaded_.reject(err);
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playerInterface.onError(err);
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};
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/**
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* The most recent key status information we have.
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* We may not have announced this information to the outside world yet,
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* which we delay to batch up changes and avoid spurious "missing key"
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* errors.
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* @private {!Map.<string, string>}
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*/
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this.keyStatusByKeyId_ = new Map();
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/**
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* The key statuses most recently announced to other classes.
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* We may have more up-to-date information being collected in
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* this.keyStatusByKeyId_, which has not been batched up and released yet.
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* @private {!Map.<string, string>}
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*/
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this.announcedKeyStatusByKeyId_ = new Map();
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/** @private {shaka.util.Timer} */
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this.keyStatusTimer_ =
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new shaka.util.Timer(() => this.processKeyStatusChanges_());
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/** @private {boolean} */
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this.usePersistentLicenses_ = false;
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/** @private {!Array.<!MediaKeyMessageEvent>} */
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this.mediaKeyMessageEvents_ = [];
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/** @private {boolean} */
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this.initialRequestsSent_ = false;
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/** @private {?shaka.util.Timer} */
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this.expirationTimer_ = new shaka.util.Timer(() => {
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this.pollExpiration_();
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}).tickEvery(/* seconds= */ updateExpirationTime);
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// Add a catch to the Promise to avoid console logs about uncaught errors.
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const noop = () => {};
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this.allSessionsLoaded_.catch(noop);
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/** @const {!shaka.util.Destroyer} */
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this.destroyer_ = new shaka.util.Destroyer(() => this.destroyNow_());
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/** @private {boolean} */
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this.srcEquals_ = false;
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/** @private {Promise} */
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this.mediaKeysAttached_ = null;
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}
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/** @override */
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destroy() {
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return this.destroyer_.destroy();
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}
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/**
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* Destroy this instance of DrmEngine. This assumes that all other checks
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* about "if it should" have passed.
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*
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* @private
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*/
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async destroyNow_() {
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// |eventManager_| should only be |null| after we call |destroy|. Destroy it
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// first so that we will stop responding to events.
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this.eventManager_.release();
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this.eventManager_ = null;
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// Since we are destroying ourselves, we don't want to react to the "all
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// sessions loaded" event.
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this.allSessionsLoaded_.reject();
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// Stop all timers. This will ensure that they do not start any new work
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// while we are destroying ourselves.
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this.expirationTimer_.stop();
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this.expirationTimer_ = null;
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this.keyStatusTimer_.stop();
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this.keyStatusTimer_ = null;
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// Close all open sessions.
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await this.closeOpenSessions_();
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// |video_| will be |null| if we never attached to a video element.
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if (this.video_) {
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goog.asserts.assert(!this.video_.src, 'video src must be removed first!');
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try {
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await this.video_.setMediaKeys(null);
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} catch (error) {
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// Ignore any failures while removing media keys from the video element.
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}
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this.video_ = null;
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}
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// Break references to everything else we hold internally.
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this.currentDrmInfo_ = null;
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this.supportedTypes_.clear();
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this.mediaKeys_ = null;
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this.offlineSessionIds_ = [];
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this.config_ = null;
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this.onError_ = () => {};
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this.playerInterface_ = null;
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this.srcEquals_ = false;
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this.mediaKeysAttached_ = null;
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}
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/**
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* Called by the Player to provide an updated configuration any time it
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* changes.
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* Must be called at least once before init().
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*
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* @param {shaka.extern.DrmConfiguration} config
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*/
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configure(config) {
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this.config_ = config;
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}
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/**
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* @param {!boolean} value
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*/
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setSrcEquals(value) {
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this.srcEquals_ = value;
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}
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/**
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* Initialize the drm engine for storing and deleting stored content.
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*
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* @param {!Array.<shaka.extern.Variant>} variants
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* The variants that are going to be stored.
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* @param {boolean} usePersistentLicenses
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* Whether or not persistent licenses should be requested and stored for
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* |manifest|.
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* @return {!Promise}
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*/
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initForStorage(variants, usePersistentLicenses) {
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this.initializedForStorage_ = true;
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// There are two cases for this call:
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// 1. We are about to store a manifest - in that case, there are no offline
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// sessions and therefore no offline session ids.
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// 2. We are about to remove the offline sessions for this manifest - in
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// that case, we don't need to know about them right now either as
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// we will be told which ones to remove later.
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this.offlineSessionIds_ = [];
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// What we really need to know is whether or not they are expecting to use
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// persistent licenses.
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this.usePersistentLicenses_ = usePersistentLicenses;
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return this.init_(variants);
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}
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/**
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* Initialize the drm engine for playback operations.
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*
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* @param {!Array.<shaka.extern.Variant>} variants
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* The variants that we want to support playing.
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* @param {!Array.<string>} offlineSessionIds
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* @return {!Promise}
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*/
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initForPlayback(variants, offlineSessionIds) {
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this.offlineSessionIds_ = offlineSessionIds;
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this.usePersistentLicenses_ = offlineSessionIds.length > 0;
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return this.init_(variants);
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}
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/**
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* Initializes the drm engine for removing persistent sessions. Only the
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* removeSession(s) methods will work correctly, creating new sessions may not
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* work as desired.
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*
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* @param {string} keySystem
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* @param {string} licenseServerUri
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* @param {Uint8Array} serverCertificate
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* @param {!Array.<MediaKeySystemMediaCapability>} audioCapabilities
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* @param {!Array.<MediaKeySystemMediaCapability>} videoCapabilities
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* @return {!Promise}
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*/
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initForRemoval(keySystem, licenseServerUri, serverCertificate,
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audioCapabilities, videoCapabilities) {
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/** @type {!Map.<string, MediaKeySystemConfiguration>} */
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const configsByKeySystem = new Map();
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/** @type {MediaKeySystemConfiguration} */
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const config = {
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audioCapabilities: audioCapabilities,
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videoCapabilities: videoCapabilities,
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distinctiveIdentifier: 'optional',
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persistentState: 'required',
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sessionTypes: ['persistent-license'],
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label: keySystem, // Tracked by us, ignored by EME.
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};
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// TODO: refactor, don't stick drmInfos onto MediaKeySystemConfiguration
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config['drmInfos'] = [{ // Non-standard attribute, ignored by EME.
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keySystem: keySystem,
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licenseServerUri: licenseServerUri,
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distinctiveIdentifierRequired: false,
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persistentStateRequired: true,
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audioRobustness: '', // Not required by queryMediaKeys_
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videoRobustness: '', // Same
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serverCertificate: serverCertificate,
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serverCertificateUri: '',
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initData: null,
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keyIds: null,
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}];
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configsByKeySystem.set(keySystem, config);
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return this.queryMediaKeys_(configsByKeySystem,
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/* variants= */ []);
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}
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/**
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* Negotiate for a key system and set up MediaKeys.
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* This will assume that both |usePersistentLicences_| and
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* |offlineSessionIds_| have been properly set.
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*
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* @param {!Array.<shaka.extern.Variant>} variants
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* The variants that we expect to operate with during the drm engine's
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* lifespan of the drm engine.
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* @return {!Promise} Resolved if/when a key system has been chosen.
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* @private
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*/
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async init_(variants) {
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goog.asserts.assert(this.config_,
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'DrmEngine configure() must be called before init()!');
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// ClearKey config overrides the manifest DrmInfo if present. The variants
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// are modified so that filtering in Player still works.
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// This comes before hadDrmInfo because it influences the value of that.
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/** @type {?shaka.extern.DrmInfo} */
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const clearKeyDrmInfo = this.configureClearKey_();
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if (clearKeyDrmInfo) {
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for (const variant of variants) {
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if (variant.video) {
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variant.video.drmInfos = [clearKeyDrmInfo];
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}
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if (variant.audio) {
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variant.audio.drmInfos = [clearKeyDrmInfo];
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}
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}
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}
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const hadDrmInfo = variants.some((variant) => {
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if (variant.video && variant.video.drmInfos.length) {
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return true;
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}
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if (variant.audio && variant.audio.drmInfos.length) {
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return true;
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}
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return false;
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});
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// When preparing to play live streams, it is possible that we won't know
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// about some upcoming encrypted content. If we initialize the drm engine
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// with no key systems, we won't be able to play when the encrypted content
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// comes.
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//
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// To avoid this, we will set the drm engine up to work with as many key
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// systems as possible so that we will be ready.
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if (!hadDrmInfo) {
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const servers = shaka.util.MapUtils.asMap(this.config_.servers);
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shaka.media.DrmEngine.replaceDrmInfo_(variants, servers);
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}
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// Make sure all the drm infos are valid and filled in correctly.
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for (const variant of variants) {
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const drmInfos = this.getVariantDrmInfos_(variant);
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for (const info of drmInfos) {
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shaka.media.DrmEngine.fillInDrmInfoDefaults_(
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info,
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shaka.util.MapUtils.asMap(this.config_.servers),
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shaka.util.MapUtils.asMap(this.config_.advanced || {}));
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}
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}
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/** @type {!Map.<string, MediaKeySystemConfiguration>} */
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let configsByKeySystem;
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// We should get the decodingInfo results for the variants after we filling
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// in the drm infos, and before queryMediaKeys_().
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await shaka.util.StreamUtils.getDecodingInfosForVariants(variants,
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this.usePersistentLicenses_, this.srcEquals_);
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const hasDrmInfo = hadDrmInfo || Object.keys(this.config_.servers).length;
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// An unencrypted content is initialized.
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if (!hasDrmInfo) {
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this.initialized_ = true;
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return Promise.resolve();
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}
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const p = this.queryMediaKeys_(configsByKeySystem, variants);
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// TODO(vaage): Look into the assertion below. If we do not have any drm
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// info, we create drm info so that content can play if it has drm info
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// later.
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// However it is okay if we fail to initialize? If we fail to initialize,
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// it means we won't be able to play the later-encrypted content, which is
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// not okay.
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// If the content did not originally have any drm info, then it doesn't
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// matter if we fail to initialize the drm engine, because we won't need it
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// anyway.
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return hadDrmInfo ? p : p.catch(() => {});
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}
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/**
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* Attach MediaKeys to the video element
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* @return {Promise}
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* @private
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*/
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async attachMediaKeys_() {
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if (this.video_.mediaKeys) {
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return;
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}
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// An attach process has already started, let's wait it out
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if (this.mediaKeysAttached_) {
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await this.mediaKeysAttached_;
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return;
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}
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try {
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this.mediaKeysAttached_ = this.video_.setMediaKeys(this.mediaKeys_);
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await this.mediaKeysAttached_;
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} catch (exception) {
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goog.asserts.assert(exception instanceof Error, 'Wrong error type!');
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this.onError_(new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.DRM,
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shaka.util.Error.Code.FAILED_TO_ATTACH_TO_VIDEO,
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exception.message));
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}
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this.destroyer_.ensureNotDestroyed();
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}
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/**
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* Processes encrypted event and start licence challenging
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* @return {!Promise}
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* @private
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*/
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async onEncryptedEvent_(event) {
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/**
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* MediaKeys should be added when receiving an encrypted event. Setting
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* mediaKeys before could result into encrypted event not being fired on
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* some browsers
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*/
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await this.attachMediaKeys_();
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this.newInitData(
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event.initDataType,
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shaka.util.BufferUtils.toUint8(event.initData));
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}
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/**
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* Start processing events.
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* @param {HTMLMediaElement} video
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* @return {!Promise}
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*/
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async attach(video) {
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if (!this.mediaKeys_) {
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// Unencrypted, or so we think. We listen for encrypted events in order
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// to warn when the stream is encrypted, even though the manifest does
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// not know it.
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// Don't complain about this twice, so just listenOnce().
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// FIXME: This is ineffective when a prefixed event is translated by our
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// polyfills, since those events are only caught and translated by a
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// MediaKeys instance. With clear content and no polyfilled MediaKeys
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// instance attached, you'll never see the 'encrypted' event on those
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// platforms (Safari).
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this.eventManager_.listenOnce(video, 'encrypted', (event) => {
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this.onError_(new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.DRM,
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shaka.util.Error.Code.ENCRYPTED_CONTENT_WITHOUT_DRM_INFO));
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});
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return;
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}
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this.video_ = video;
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this.eventManager_.listenOnce(this.video_, 'play', () => this.onPlay_());
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if ('webkitCurrentPlaybackTargetIsWireless' in this.video_) {
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this.eventManager_.listen(this.video_,
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'webkitcurrentplaybacktargetiswirelesschanged',
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() => this.closeOpenSessions_());
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}
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const manifestInitData = this.currentDrmInfo_.initData.find(
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(initDataOverride) => initDataOverride.initData.length > 0);
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|
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/**
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* We can attach media keys before the playback actually begins when:
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* - Using legacy implementations requires MediaKeys to be set before
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* having webkitneedkey / msneedkey event, which will be translated as
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* an encrypted event by the polyfills
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* - Some initData already has been generated (through the manifest)
|
|
* - In case of an offline session
|
|
*/
|
|
if (manifestInitData ||
|
|
shaka.util.Platform.isMediaKeysPolyfilled() ||
|
|
this.offlineSessionIds_.length) {
|
|
await this.attachMediaKeys_();
|
|
}
|
|
|
|
this.createOrLoad();
|
|
|
|
// Explicit init data for any one stream or an offline session is
|
|
// sufficient to suppress 'encrypted' events for all streams.
|
|
if (!manifestInitData && !this.offlineSessionIds_.length) {
|
|
this.eventManager_.listen(
|
|
this.video_, 'encrypted', (e) => this.onEncryptedEvent_(e));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the server certificate based on the current DrmInfo.
|
|
*
|
|
* @return {!Promise}
|
|
*/
|
|
async setServerCertificate() {
|
|
goog.asserts.assert(this.initialized_,
|
|
'Must call init() before setServerCertificate');
|
|
|
|
if (!this.mediaKeys_ || !this.currentDrmInfo_) {
|
|
return;
|
|
}
|
|
|
|
if (this.currentDrmInfo_.serverCertificateUri &&
|
|
(!this.currentDrmInfo_.serverCertificate ||
|
|
!this.currentDrmInfo_.serverCertificate.length)) {
|
|
const request = shaka.net.NetworkingEngine.makeRequest(
|
|
[this.currentDrmInfo_.serverCertificateUri],
|
|
this.config_.retryParameters);
|
|
|
|
try {
|
|
const operation = this.playerInterface_.netEngine.request(
|
|
shaka.net.NetworkingEngine.RequestType.SERVER_CERTIFICATE,
|
|
request);
|
|
const response = await operation.promise;
|
|
|
|
this.currentDrmInfo_.serverCertificate =
|
|
shaka.util.BufferUtils.toUint8(response.data);
|
|
} catch (error) {
|
|
// Request failed!
|
|
goog.asserts.assert(error instanceof shaka.util.Error,
|
|
'Wrong NetworkingEngine error type!');
|
|
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.SERVER_CERTIFICATE_REQUEST_FAILED,
|
|
error);
|
|
}
|
|
|
|
if (this.destroyer_.destroyed()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!this.currentDrmInfo_.serverCertificate ||
|
|
!this.currentDrmInfo_.serverCertificate.length) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
const supported = await this.mediaKeys_.setServerCertificate(
|
|
this.currentDrmInfo_.serverCertificate);
|
|
|
|
if (!supported) {
|
|
shaka.log.warning('Server certificates are not supported by the ' +
|
|
'key system. The server certificate has been ' +
|
|
'ignored.');
|
|
}
|
|
} catch (exception) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.INVALID_SERVER_CERTIFICATE,
|
|
exception.message);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove an offline session and delete it's data. This can only be called
|
|
* after a successful call to |init|. This will wait until the
|
|
* 'license-release' message is handled. The returned Promise will be rejected
|
|
* if there is an error releasing the license.
|
|
*
|
|
* @param {string} sessionId
|
|
* @return {!Promise}
|
|
*/
|
|
async removeSession(sessionId) {
|
|
goog.asserts.assert(this.mediaKeys_,
|
|
'Must call init() before removeSession');
|
|
|
|
const session = await this.loadOfflineSession_(sessionId);
|
|
|
|
// This will be null on error, such as session not found.
|
|
if (!session) {
|
|
shaka.log.v2('Ignoring attempt to remove missing session', sessionId);
|
|
return;
|
|
}
|
|
|
|
// TODO: Consider adding a timeout to get the 'message' event.
|
|
// Note that the 'message' event will get raised after the remove()
|
|
// promise resolves.
|
|
const tasks = [];
|
|
|
|
const found = this.activeSessions_.get(session);
|
|
if (found) {
|
|
// This will force us to wait until the 'license-release' message has been
|
|
// handled.
|
|
found.updatePromise = new shaka.util.PublicPromise();
|
|
tasks.push(found.updatePromise);
|
|
}
|
|
|
|
shaka.log.v2('Attempting to remove session', sessionId);
|
|
tasks.push(session.remove());
|
|
|
|
await Promise.all(tasks);
|
|
this.activeSessions_.delete(session);
|
|
}
|
|
|
|
/**
|
|
* Creates the sessions for the init data and waits for them to become ready.
|
|
*
|
|
* @return {!Promise}
|
|
*/
|
|
createOrLoad() {
|
|
// Create temp sessions.
|
|
const initDatas =
|
|
(this.currentDrmInfo_ ? this.currentDrmInfo_.initData : []) || [];
|
|
for (const initDataOverride of initDatas) {
|
|
this.newInitData(
|
|
initDataOverride.initDataType, initDataOverride.initData);
|
|
}
|
|
|
|
// Load each session.
|
|
for (const sessionId of this.offlineSessionIds_) {
|
|
this.loadOfflineSession_(sessionId);
|
|
}
|
|
|
|
// If we have no sessions, we need to resolve the promise right now or else
|
|
// it will never get resolved.
|
|
if (!initDatas.length && !this.offlineSessionIds_.length) {
|
|
this.allSessionsLoaded_.resolve();
|
|
}
|
|
|
|
return this.allSessionsLoaded_;
|
|
}
|
|
|
|
/**
|
|
* Called when new initialization data is encountered. If this data hasn't
|
|
* been seen yet, this will create a new session for it.
|
|
*
|
|
* @param {string} initDataType
|
|
* @param {!Uint8Array} initData
|
|
*/
|
|
newInitData(initDataType, initData) {
|
|
if (!initData.length) {
|
|
return;
|
|
}
|
|
|
|
// Suppress duplicate init data.
|
|
// Note that some init data are extremely large and can't portably be used
|
|
// as keys in a dictionary.
|
|
|
|
const metadatas = this.activeSessions_.values();
|
|
for (const metadata of metadatas) {
|
|
// Tizen 2015 and 2016 models will send multiple webkitneedkey events
|
|
// with the same init data. If the duplicates are supressed, playback
|
|
// will stall without errors.
|
|
if (shaka.util.BufferUtils.equal(initData, metadata.initData) &&
|
|
!shaka.util.Platform.isTizen2()) {
|
|
shaka.log.debug('Ignoring duplicate init data.');
|
|
return;
|
|
}
|
|
}
|
|
|
|
this.createSession(initDataType, initData,
|
|
this.currentDrmInfo_.sessionType);
|
|
}
|
|
|
|
/** @return {boolean} */
|
|
initialized() {
|
|
return this.initialized_;
|
|
}
|
|
|
|
/**
|
|
* @param {?shaka.extern.DrmInfo} drmInfo
|
|
* @return {string} */
|
|
static keySystem(drmInfo) {
|
|
return drmInfo ? drmInfo.keySystem : '';
|
|
}
|
|
|
|
/**
|
|
* @param {?string} keySystem
|
|
* @return {boolean} */
|
|
static isPlayReadyKeySystem(keySystem) {
|
|
if (keySystem) {
|
|
return !!keySystem.match(/^com\.(microsoft|chromecast)\.playready/);
|
|
}
|
|
|
|
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.
|
|
*
|
|
* @param {string} contentType
|
|
* @return {boolean}
|
|
*/
|
|
willSupport(contentType) {
|
|
// Edge 14 does not report correct capabilities. It will only report the
|
|
// first MIME type even if the others are supported. To work around this,
|
|
// we say that Edge supports everything.
|
|
//
|
|
// See https://github.com/google/shaka-player/issues/1495 for details.
|
|
if (shaka.util.Platform.isLegacyEdge()) {
|
|
return true;
|
|
}
|
|
|
|
contentType = contentType.toLowerCase();
|
|
|
|
if (shaka.util.Platform.isTizen() &&
|
|
contentType.includes('codecs="ac-3"')) {
|
|
// Some Tizen devices seem to misreport AC-3 support. This works around
|
|
// the issue, by falling back to EC-3, which seems to be supported on the
|
|
// same devices and be correctly reported in all cases we have observed.
|
|
// See https://github.com/google/shaka-player/issues/2989 for details.
|
|
const fallback = contentType.replace('ac-3', 'ec-3');
|
|
return this.supportedTypes_.has(contentType) ||
|
|
this.supportedTypes_.has(fallback);
|
|
}
|
|
|
|
return this.supportedTypes_.has(contentType);
|
|
}
|
|
|
|
/**
|
|
* Returns the ID of the sessions currently active.
|
|
*
|
|
* @return {!Array.<string>}
|
|
*/
|
|
getSessionIds() {
|
|
const sessions = this.activeSessions_.keys();
|
|
const ids = shaka.util.Iterables.map(sessions, (s) => s.sessionId);
|
|
|
|
// TODO: Make |getSessionIds| return |Iterable| instead of |Array|.
|
|
return Array.from(ids);
|
|
}
|
|
|
|
/**
|
|
* Returns the next expiration time, or Infinity.
|
|
* @return {number}
|
|
*/
|
|
getExpiration() {
|
|
// This will equal Infinity if there are no entries.
|
|
let min = Infinity;
|
|
|
|
const sessions = this.activeSessions_.keys();
|
|
for (const session of sessions) {
|
|
if (!isNaN(session.expiration)) {
|
|
min = Math.min(min, session.expiration);
|
|
}
|
|
}
|
|
|
|
return min;
|
|
}
|
|
|
|
/**
|
|
* Returns the time spent on license requests during this session, or NaN.
|
|
*
|
|
* @return {number}
|
|
*/
|
|
getLicenseTime() {
|
|
if (this.licenseTimeSeconds_) {
|
|
return this.licenseTimeSeconds_;
|
|
}
|
|
return NaN;
|
|
}
|
|
|
|
/**
|
|
* Returns the DrmInfo that was used to initialize the current key system.
|
|
*
|
|
* @return {?shaka.extern.DrmInfo}
|
|
*/
|
|
getDrmInfo() {
|
|
return this.currentDrmInfo_;
|
|
}
|
|
|
|
/**
|
|
* Return the media keys created from the current mediaKeySystemAccess.
|
|
* @return {MediaKeys}
|
|
*/
|
|
getMediaKeys() {
|
|
return this.mediaKeys_;
|
|
}
|
|
|
|
/**
|
|
* Returns the current key statuses.
|
|
*
|
|
* @return {!Object.<string, string>}
|
|
*/
|
|
getKeyStatuses() {
|
|
return shaka.util.MapUtils.asObject(this.announcedKeyStatusByKeyId_);
|
|
}
|
|
|
|
/**
|
|
* Returns the current media key sessions.
|
|
*
|
|
* @return {!Array.<MediaKeySession>}
|
|
*/
|
|
getMediaKeySessions() {
|
|
return Array.from(this.activeSessions_.keys());
|
|
}
|
|
|
|
|
|
/**
|
|
* @param {shaka.extern.Stream} stream
|
|
* @param {string=} codecOverride
|
|
* @return {string}
|
|
* @private
|
|
*/
|
|
static computeMimeType_(stream, codecOverride) {
|
|
const realMimeType = shaka.util.MimeUtils.getFullType(stream.mimeType,
|
|
codecOverride || stream.codecs);
|
|
if (shaka.media.Transmuxer.isSupported(realMimeType)) {
|
|
// This will be handled by the Transmuxer, so use the MIME type that the
|
|
// Transmuxer will produce.
|
|
return shaka.media.Transmuxer.convertTsCodecs(stream.type, realMimeType);
|
|
}
|
|
return realMimeType;
|
|
}
|
|
|
|
/**
|
|
* @param {!Map.<string, MediaKeySystemConfiguration>} configsByKeySystem
|
|
* A dictionary of configs, indexed by key system, with an iteration order
|
|
* (insertion order) that reflects the preference for the application.
|
|
* @param {!Array.<shaka.extern.Variant>} variants
|
|
* @return {!Promise} Resolved if/when a key system has been chosen.
|
|
* @private
|
|
*/
|
|
async queryMediaKeys_(configsByKeySystem, variants) {
|
|
const drmInfosByKeySystem = new Map();
|
|
|
|
const mediaKeySystemAccess = variants.length ?
|
|
this.getKeySystemAccessFromVariants_(variants, drmInfosByKeySystem) :
|
|
await this.getKeySystemAccessByConfigs_(configsByKeySystem);
|
|
|
|
if (!mediaKeySystemAccess) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.REQUESTED_KEY_SYSTEM_CONFIG_UNAVAILABLE);
|
|
}
|
|
this.destroyer_.ensureNotDestroyed();
|
|
|
|
try {
|
|
// Get the set of supported content types from the audio and video
|
|
// capabilities. Avoid duplicates so that it is easier to read what is
|
|
// supported.
|
|
this.supportedTypes_.clear();
|
|
|
|
// Store the capabilities of the key system.
|
|
const realConfig = mediaKeySystemAccess.getConfiguration();
|
|
|
|
shaka.log.v2(
|
|
'Got MediaKeySystemAccess with configuration',
|
|
realConfig);
|
|
|
|
const audioCaps = realConfig.audioCapabilities || [];
|
|
const videoCaps = realConfig.videoCapabilities || [];
|
|
|
|
for (const cap of audioCaps) {
|
|
this.supportedTypes_.add(cap.contentType.toLowerCase());
|
|
}
|
|
|
|
for (const cap of videoCaps) {
|
|
this.supportedTypes_.add(cap.contentType.toLowerCase());
|
|
}
|
|
|
|
goog.asserts.assert(this.supportedTypes_.size,
|
|
'We should get at least one supported MIME type');
|
|
|
|
if (variants.length) {
|
|
this.currentDrmInfo_ = this.createDrmInfoByInfos_(
|
|
mediaKeySystemAccess.keySystem,
|
|
drmInfosByKeySystem.get(mediaKeySystemAccess.keySystem));
|
|
} else {
|
|
this.currentDrmInfo_ = shaka.media.DrmEngine.createDrmInfoByConfigs_(
|
|
mediaKeySystemAccess.keySystem,
|
|
configsByKeySystem.get(mediaKeySystemAccess.keySystem));
|
|
}
|
|
if (!this.currentDrmInfo_.licenseServerUri) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.NO_LICENSE_SERVER_GIVEN,
|
|
this.currentDrmInfo_.keySystem);
|
|
}
|
|
|
|
const mediaKeys = await mediaKeySystemAccess.createMediaKeys();
|
|
this.destroyer_.ensureNotDestroyed();
|
|
shaka.log.info('Created MediaKeys object for key system',
|
|
this.currentDrmInfo_.keySystem);
|
|
|
|
this.mediaKeys_ = mediaKeys;
|
|
this.initialized_ = true;
|
|
|
|
await this.setServerCertificate();
|
|
this.destroyer_.ensureNotDestroyed();
|
|
} catch (exception) {
|
|
this.destroyer_.ensureNotDestroyed(exception);
|
|
|
|
// Don't rewrap a shaka.util.Error from earlier in the chain:
|
|
this.currentDrmInfo_ = null;
|
|
this.supportedTypes_.clear();
|
|
if (exception instanceof shaka.util.Error) {
|
|
throw exception;
|
|
}
|
|
|
|
// We failed to create MediaKeys. This generally shouldn't happen.
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.FAILED_TO_CREATE_CDM,
|
|
exception.message);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the MediaKeySystemAccess from the decodingInfos of the variants.
|
|
* @param {!Array.<shaka.extern.Variant>} variants
|
|
* @param {!Map.<string, !Array.<shaka.extern.DrmInfo>>} drmInfosByKeySystem
|
|
* A dictionary of drmInfos, indexed by key system.
|
|
* @return {MediaKeySystemAccess}
|
|
* @private
|
|
*/
|
|
getKeySystemAccessFromVariants_(variants, drmInfosByKeySystem) {
|
|
for (const variant of variants) {
|
|
// Get all the key systems in the variant that shouldHaveLicenseServer.
|
|
const drmInfos = this.getVariantDrmInfos_(variant);
|
|
for (const info of drmInfos) {
|
|
if (!drmInfosByKeySystem.has(info.keySystem)) {
|
|
drmInfosByKeySystem.set(info.keySystem, []);
|
|
}
|
|
drmInfosByKeySystem.get(info.keySystem).push(info);
|
|
}
|
|
}
|
|
|
|
if (drmInfosByKeySystem.size == 1 && drmInfosByKeySystem.has('')) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.NO_RECOGNIZED_KEY_SYSTEMS);
|
|
}
|
|
|
|
// If we have configured preferredKeySystems, choose a preferred keySystem
|
|
// if available.
|
|
for (const preferredKeySystem of this.config_.preferredKeySystems) {
|
|
for (const variant of variants) {
|
|
const decodingInfo = variant.decodingInfos.find((decodingInfo) => {
|
|
return decodingInfo.supported &&
|
|
decodingInfo.keySystemAccess != null &&
|
|
decodingInfo.keySystemAccess.keySystem == preferredKeySystem;
|
|
});
|
|
if (decodingInfo) {
|
|
return decodingInfo.keySystemAccess;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Try key systems with configured license servers first. We only have to
|
|
// try key systems without configured license servers for diagnostic
|
|
// reasons, so that we can differentiate between "none of these key
|
|
// systems are available" and "some are available, but you did not
|
|
// configure them properly." The former takes precedence.
|
|
for (const shouldHaveLicenseServer of [true, false]) {
|
|
for (const variant of variants) {
|
|
for (const decodingInfo of variant.decodingInfos) {
|
|
if (!decodingInfo.supported || !decodingInfo.keySystemAccess) {
|
|
continue;
|
|
}
|
|
const drmInfos =
|
|
drmInfosByKeySystem.get(decodingInfo.keySystemAccess.keySystem);
|
|
for (const info of drmInfos) {
|
|
if (!!info.licenseServerUri == shouldHaveLicenseServer) {
|
|
return decodingInfo.keySystemAccess;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Get the MediaKeySystemAccess by querying requestMediaKeySystemAccess.
|
|
* @param {!Map.<string, MediaKeySystemConfiguration>} configsByKeySystem
|
|
* A dictionary of configs, indexed by key system, with an iteration order
|
|
* (insertion order) that reflects the preference for the application.
|
|
* @return {!Promise.<MediaKeySystemAccess>} Resolved if/when a
|
|
* mediaKeySystemAccess has been chosen.
|
|
* @private
|
|
*/
|
|
async getKeySystemAccessByConfigs_(configsByKeySystem) {
|
|
/** @type {MediaKeySystemAccess} */
|
|
let mediaKeySystemAccess;
|
|
|
|
if (configsByKeySystem.size == 1 && configsByKeySystem.has('')) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.NO_RECOGNIZED_KEY_SYSTEMS);
|
|
}
|
|
|
|
// If there are no tracks of a type, these should be not present.
|
|
// Otherwise the query will fail.
|
|
for (const config of configsByKeySystem.values()) {
|
|
if (config.audioCapabilities.length == 0) {
|
|
delete config.audioCapabilities;
|
|
}
|
|
if (config.videoCapabilities.length == 0) {
|
|
delete config.videoCapabilities;
|
|
}
|
|
}
|
|
|
|
// If we have configured preferredKeySystems, choose the preferred one if
|
|
// available.
|
|
for (const keySystem of this.config_.preferredKeySystems) {
|
|
if (configsByKeySystem.has(keySystem)) {
|
|
const config = configsByKeySystem.get(keySystem);
|
|
try {
|
|
mediaKeySystemAccess = // eslint-disable-next-line no-await-in-loop
|
|
await navigator.requestMediaKeySystemAccess(keySystem, [config]);
|
|
return mediaKeySystemAccess;
|
|
} catch (error) {
|
|
// Suppress errors.
|
|
shaka.log.v2(
|
|
'Requesting', keySystem, 'failed with config', config, error);
|
|
}
|
|
this.destroyer_.ensureNotDestroyed();
|
|
}
|
|
}
|
|
|
|
// Try key systems with configured license servers first. We only have to
|
|
// try key systems without configured license servers for diagnostic
|
|
// reasons, so that we can differentiate between "none of these key
|
|
// systems are available" and "some are available, but you did not
|
|
// configure them properly." The former takes precedence.
|
|
// TODO: once MediaCap implementation is complete, this part can be
|
|
// simplified or removed.
|
|
for (const shouldHaveLicenseServer of [true, false]) {
|
|
for (const keySystem of configsByKeySystem.keys()) {
|
|
const config = configsByKeySystem.get(keySystem);
|
|
// TODO: refactor, don't stick drmInfos onto
|
|
// MediaKeySystemConfiguration
|
|
const hasLicenseServer = config['drmInfos'].some((info) => {
|
|
return !!info.licenseServerUri;
|
|
});
|
|
if (hasLicenseServer != shouldHaveLicenseServer) {
|
|
continue;
|
|
}
|
|
|
|
try {
|
|
mediaKeySystemAccess = // eslint-disable-next-line no-await-in-loop
|
|
await navigator.requestMediaKeySystemAccess(keySystem, [config]);
|
|
return mediaKeySystemAccess;
|
|
} catch (error) {
|
|
// Suppress errors.
|
|
shaka.log.v2(
|
|
'Requesting', keySystem, 'failed with config', config, error);
|
|
}
|
|
this.destroyer_.ensureNotDestroyed();
|
|
}
|
|
}
|
|
return mediaKeySystemAccess;
|
|
}
|
|
|
|
/**
|
|
* Create a DrmInfo using configured clear keys.
|
|
* The server URI will be a data URI which decodes to a clearkey license.
|
|
* @return {?shaka.extern.DrmInfo} or null if clear keys are not configured.
|
|
* @private
|
|
* @see https://bit.ly/2K8gOnv for the spec on the clearkey license format.
|
|
*/
|
|
configureClearKey_() {
|
|
const clearKeys = shaka.util.MapUtils.asMap(this.config_.clearKeys);
|
|
if (clearKeys.size == 0) {
|
|
return null;
|
|
}
|
|
|
|
const StringUtils = shaka.util.StringUtils;
|
|
const Uint8ArrayUtils = shaka.util.Uint8ArrayUtils;
|
|
const keys = [];
|
|
const keyIds = [];
|
|
|
|
clearKeys.forEach((keyHex, keyIdHex) => {
|
|
const keyId = Uint8ArrayUtils.fromHex(keyIdHex);
|
|
const key = Uint8ArrayUtils.fromHex(keyHex);
|
|
const keyObj = {
|
|
kty: 'oct',
|
|
kid: Uint8ArrayUtils.toBase64(keyId, false),
|
|
k: Uint8ArrayUtils.toBase64(key, false),
|
|
};
|
|
|
|
keys.push(keyObj);
|
|
keyIds.push(keyObj.kid);
|
|
});
|
|
|
|
const jwkSet = {keys: keys};
|
|
const license = JSON.stringify(jwkSet);
|
|
|
|
// Use the keyids init data since is suggested by EME.
|
|
// Suggestion: https://bit.ly/2JYcNTu
|
|
// Format: https://www.w3.org/TR/eme-initdata-keyids/
|
|
const initDataStr = JSON.stringify({'kids': keyIds});
|
|
const initData =
|
|
shaka.util.BufferUtils.toUint8(StringUtils.toUTF8(initDataStr));
|
|
const initDatas = [{initData: initData, initDataType: 'keyids'}];
|
|
|
|
return {
|
|
keySystem: 'org.w3.clearkey',
|
|
licenseServerUri: 'data:application/json;base64,' + window.btoa(license),
|
|
distinctiveIdentifierRequired: false,
|
|
persistentStateRequired: false,
|
|
audioRobustness: '',
|
|
videoRobustness: '',
|
|
serverCertificate: null,
|
|
serverCertificateUri: '',
|
|
sessionType: '',
|
|
initData: initDatas,
|
|
keyIds: new Set(keyIds),
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @param {string} sessionId
|
|
* @return {!Promise.<MediaKeySession>}
|
|
* @private
|
|
*/
|
|
async loadOfflineSession_(sessionId) {
|
|
let session;
|
|
|
|
const sessionType = 'persistent-license';
|
|
|
|
try {
|
|
shaka.log.v1('Attempting to load an offline session', sessionId);
|
|
session = this.mediaKeys_.createSession(sessionType);
|
|
} catch (exception) {
|
|
const error = new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.FAILED_TO_CREATE_SESSION,
|
|
exception.message);
|
|
this.onError_(error);
|
|
return Promise.reject(error);
|
|
}
|
|
|
|
this.eventManager_.listen(session, 'message',
|
|
/** @type {shaka.util.EventManager.ListenerType} */(
|
|
(event) => this.onSessionMessage_(event)));
|
|
this.eventManager_.listen(session, 'keystatuseschange',
|
|
(event) => this.onKeyStatusesChange_(event));
|
|
|
|
const metadata = {
|
|
initData: null,
|
|
loaded: false,
|
|
oldExpiration: Infinity,
|
|
updatePromise: null,
|
|
type: sessionType,
|
|
};
|
|
this.activeSessions_.set(session, metadata);
|
|
|
|
try {
|
|
const present = await session.load(sessionId);
|
|
this.destroyer_.ensureNotDestroyed();
|
|
shaka.log.v2('Loaded offline session', sessionId, present);
|
|
|
|
if (!present) {
|
|
this.activeSessions_.delete(session);
|
|
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.OFFLINE_SESSION_REMOVED));
|
|
return Promise.resolve();
|
|
}
|
|
|
|
// TODO: We should get a key status change event. Remove once Chrome CDM
|
|
// is fixed.
|
|
metadata.loaded = true;
|
|
if (this.areAllSessionsLoaded_()) {
|
|
this.allSessionsLoaded_.resolve();
|
|
}
|
|
|
|
return session;
|
|
} catch (error) {
|
|
this.destroyer_.ensureNotDestroyed(error);
|
|
|
|
this.activeSessions_.delete(session);
|
|
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.FAILED_TO_CREATE_SESSION,
|
|
error.message));
|
|
}
|
|
return Promise.resolve();
|
|
}
|
|
|
|
/**
|
|
* @param {string} initDataType
|
|
* @param {!Uint8Array} initData
|
|
* @param {string} sessionType
|
|
*/
|
|
createSession(initDataType, initData, sessionType) {
|
|
goog.asserts.assert(this.mediaKeys_,
|
|
'mediaKeys_ should be valid when creating temporary session.');
|
|
|
|
let session;
|
|
|
|
try {
|
|
shaka.log.info('Creating new', sessionType, 'session');
|
|
|
|
session = this.mediaKeys_.createSession(sessionType);
|
|
} catch (exception) {
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.FAILED_TO_CREATE_SESSION,
|
|
exception.message));
|
|
return;
|
|
}
|
|
|
|
this.eventManager_.listen(session, 'message',
|
|
/** @type {shaka.util.EventManager.ListenerType} */(
|
|
(event) => this.onSessionMessage_(event)));
|
|
this.eventManager_.listen(session, 'keystatuseschange',
|
|
(event) => this.onKeyStatusesChange_(event));
|
|
|
|
const metadata = {
|
|
initData: initData,
|
|
loaded: false,
|
|
oldExpiration: Infinity,
|
|
updatePromise: null,
|
|
type: sessionType,
|
|
};
|
|
this.activeSessions_.set(session, metadata);
|
|
|
|
/**
|
|
* initDataTransform is only necessary when using legacy protection
|
|
* APIs, so prevent doing any transform when using the EME HTML5 spec
|
|
*/
|
|
if (shaka.util.Platform.isMediaKeysPolyfilled()) {
|
|
try {
|
|
initData = this.config_.initDataTransform(
|
|
initData, initDataType, this.currentDrmInfo_);
|
|
} catch (error) {
|
|
let shakaError = error;
|
|
if (!(error instanceof shaka.util.Error)) {
|
|
shakaError = new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.INIT_DATA_TRANSFORM_ERROR,
|
|
error);
|
|
}
|
|
this.onError_(shakaError);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (this.config_.logLicenseExchange) {
|
|
const str = shaka.util.Uint8ArrayUtils.toBase64(initData);
|
|
shaka.log.info('EME init data: type=', initDataType, 'data=', str);
|
|
}
|
|
|
|
session.generateRequest(initDataType, initData).catch((error) => {
|
|
if (this.destroyer_.destroyed()) {
|
|
return;
|
|
}
|
|
goog.asserts.assert(error instanceof Error, 'Wrong error type!');
|
|
|
|
this.activeSessions_.delete(session);
|
|
|
|
// This may be supplied by some polyfills.
|
|
/** @type {MediaKeyError} */
|
|
const errorCode = error['errorCode'];
|
|
|
|
let extended;
|
|
if (errorCode && errorCode.systemCode) {
|
|
extended = errorCode.systemCode;
|
|
if (extended < 0) {
|
|
extended += Math.pow(2, 32);
|
|
}
|
|
extended = '0x' + extended.toString(16);
|
|
}
|
|
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.FAILED_TO_GENERATE_LICENSE_REQUEST,
|
|
error.message, error, extended));
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {!Uint8Array} initData
|
|
* @param {string} initDataType
|
|
* @param {?shaka.extern.DrmInfo} drmInfo
|
|
* @return {!Uint8Array}
|
|
*/
|
|
static defaultInitDataTransform(initData, initDataType, drmInfo) {
|
|
if (initDataType == 'skd') {
|
|
const cert = drmInfo.serverCertificate;
|
|
const contentId =
|
|
shaka.util.FairPlayUtils.defaultGetContentId(initData);
|
|
initData = shaka.util.FairPlayUtils.initDataTransform(
|
|
initData, contentId, cert);
|
|
}
|
|
return initData;
|
|
}
|
|
|
|
/**
|
|
* @param {!MediaKeyMessageEvent} event
|
|
* @private
|
|
*/
|
|
onSessionMessage_(event) {
|
|
if (this.delayLicenseRequest_()) {
|
|
this.mediaKeyMessageEvents_.push(event);
|
|
} else {
|
|
this.sendLicenseRequest_(event);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return {boolean}
|
|
* @private
|
|
*/
|
|
delayLicenseRequest_() {
|
|
if (!this.video_) {
|
|
// If there's no video, don't delay the license request; i.e., in the case
|
|
// of offline storage.
|
|
return false;
|
|
}
|
|
return (this.config_.delayLicenseRequestUntilPlayed &&
|
|
this.video_.paused && !this.initialRequestsSent_);
|
|
}
|
|
|
|
/**
|
|
* Sends a license request.
|
|
* @param {!MediaKeyMessageEvent} event
|
|
* @private
|
|
*/
|
|
async sendLicenseRequest_(event) {
|
|
/** @type {!MediaKeySession} */
|
|
const session = event.target;
|
|
shaka.log.v1(
|
|
'Sending license request for session', session.sessionId, 'of type',
|
|
event.messageType);
|
|
if (this.config_.logLicenseExchange) {
|
|
const str = shaka.util.Uint8ArrayUtils.toBase64(event.message);
|
|
shaka.log.info('EME license request', str);
|
|
}
|
|
|
|
const metadata = this.activeSessions_.get(session);
|
|
|
|
let url = this.currentDrmInfo_.licenseServerUri;
|
|
const advancedConfig =
|
|
this.config_.advanced[this.currentDrmInfo_.keySystem];
|
|
|
|
if (event.messageType == 'individualization-request' && advancedConfig &&
|
|
advancedConfig.individualizationServer) {
|
|
url = advancedConfig.individualizationServer;
|
|
}
|
|
|
|
const requestType = shaka.net.NetworkingEngine.RequestType.LICENSE;
|
|
const request = shaka.net.NetworkingEngine.makeRequest(
|
|
[url], this.config_.retryParameters);
|
|
request.body = event.message;
|
|
request.method = 'POST';
|
|
request.licenseRequestType = event.messageType;
|
|
request.sessionId = session.sessionId;
|
|
// NOTE: allowCrossSiteCredentials can be set in a request filter.
|
|
|
|
if (shaka.media.DrmEngine.isPlayReadyKeySystem(
|
|
this.currentDrmInfo_.keySystem)) {
|
|
this.unpackPlayReadyRequest_(request);
|
|
}
|
|
|
|
const startTimeRequest = Date.now();
|
|
|
|
let response;
|
|
try {
|
|
const req = this.playerInterface_.netEngine.request(requestType, request);
|
|
response = await req.promise;
|
|
} catch (error) {
|
|
// Request failed!
|
|
goog.asserts.assert(error instanceof shaka.util.Error,
|
|
'Wrong NetworkingEngine error type!');
|
|
const shakaErr = new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.LICENSE_REQUEST_FAILED,
|
|
error);
|
|
this.onError_(shakaErr);
|
|
if (metadata && metadata.updatePromise) {
|
|
metadata.updatePromise.reject(shakaErr);
|
|
}
|
|
return;
|
|
}
|
|
if (this.destroyer_.destroyed()) {
|
|
return;
|
|
}
|
|
|
|
this.licenseTimeSeconds_ += (Date.now() - startTimeRequest) / 1000;
|
|
|
|
if (this.config_.logLicenseExchange) {
|
|
const str = shaka.util.Uint8ArrayUtils.toBase64(response.data);
|
|
shaka.log.info('EME license response', str);
|
|
}
|
|
|
|
// Request succeeded, now pass the response to the CDM.
|
|
try {
|
|
shaka.log.v1('Updating session', session.sessionId);
|
|
await session.update(response.data);
|
|
} catch (error) {
|
|
// Session update failed!
|
|
const shakaErr = new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.LICENSE_RESPONSE_REJECTED,
|
|
error.message);
|
|
this.onError_(shakaErr);
|
|
if (metadata && metadata.updatePromise) {
|
|
metadata.updatePromise.reject(shakaErr);
|
|
}
|
|
return;
|
|
}
|
|
|
|
const updateEvent = new shaka.util.FakeEvent('drmsessionupdate');
|
|
this.playerInterface_.onEvent(updateEvent);
|
|
|
|
if (metadata) {
|
|
if (metadata.updatePromise) {
|
|
metadata.updatePromise.resolve();
|
|
}
|
|
// In case there are no key statuses, consider this session loaded
|
|
// after a reasonable timeout. It should definitely not take 5
|
|
// seconds to process a license.
|
|
const timer = new shaka.util.Timer(() => {
|
|
metadata.loaded = true;
|
|
if (this.areAllSessionsLoaded_()) {
|
|
this.allSessionsLoaded_.resolve();
|
|
}
|
|
});
|
|
|
|
timer.tickAfter(
|
|
/* seconds= */ shaka.media.DrmEngine.SESSION_LOAD_TIMEOUT_);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Unpacks PlayReady license requests. Modifies the request object.
|
|
* @param {shaka.extern.Request} request
|
|
* @private
|
|
*/
|
|
unpackPlayReadyRequest_(request) {
|
|
// On Edge, the raw license message is UTF-16-encoded XML. We need
|
|
// to unpack the Challenge element (base64-encoded string containing the
|
|
// actual license request) and any HttpHeader elements (sent as request
|
|
// headers).
|
|
|
|
// Example XML:
|
|
|
|
// <PlayReadyKeyMessage type="LicenseAcquisition">
|
|
// <LicenseAcquisition Version="1">
|
|
// <Challenge encoding="base64encoded">{Base64Data}</Challenge>
|
|
// <HttpHeaders>
|
|
// <HttpHeader>
|
|
// <name>Content-Type</name>
|
|
// <value>text/xml; charset=utf-8</value>
|
|
// </HttpHeader>
|
|
// <HttpHeader>
|
|
// <name>SOAPAction</name>
|
|
// <value>http://schemas.microsoft.com/DRM/etc/etc</value>
|
|
// </HttpHeader>
|
|
// </HttpHeaders>
|
|
// </LicenseAcquisition>
|
|
// </PlayReadyKeyMessage>
|
|
|
|
const xml = shaka.util.StringUtils.fromUTF16(
|
|
request.body, /* littleEndian= */ true, /* noThrow= */ true);
|
|
if (!xml.includes('PlayReadyKeyMessage')) {
|
|
// This does not appear to be a wrapped message as on Edge. Some
|
|
// clients do not need this unwrapping, so we will assume this is one of
|
|
// them. Note that "xml" at this point probably looks like random
|
|
// garbage, since we interpreted UTF-8 as UTF-16.
|
|
shaka.log.debug('PlayReady request is already unwrapped.');
|
|
request.headers['Content-Type'] = 'text/xml; charset=utf-8';
|
|
return;
|
|
}
|
|
shaka.log.debug('Unwrapping PlayReady request.');
|
|
const dom = new DOMParser().parseFromString(xml, 'application/xml');
|
|
|
|
// Set request headers.
|
|
const headers = dom.getElementsByTagName('HttpHeader');
|
|
for (const header of headers) {
|
|
const name = header.getElementsByTagName('name')[0];
|
|
const value = header.getElementsByTagName('value')[0];
|
|
goog.asserts.assert(name && value, 'Malformed PlayReady headers!');
|
|
request.headers[name.textContent] = value.textContent;
|
|
}
|
|
|
|
// Unpack the base64-encoded challenge.
|
|
const challenge = dom.getElementsByTagName('Challenge')[0];
|
|
goog.asserts.assert(challenge, 'Malformed PlayReady challenge!');
|
|
goog.asserts.assert(challenge.getAttribute('encoding') == 'base64encoded',
|
|
'Unexpected PlayReady challenge encoding!');
|
|
request.body = shaka.util.Uint8ArrayUtils.fromBase64(challenge.textContent);
|
|
}
|
|
|
|
/**
|
|
* @param {!Event} event
|
|
* @private
|
|
* @suppress {invalidCasts} to swap keyId and status
|
|
*/
|
|
onKeyStatusesChange_(event) {
|
|
const session = /** @type {!MediaKeySession} */(event.target);
|
|
shaka.log.v2('Key status changed for session', session.sessionId);
|
|
|
|
const found = this.activeSessions_.get(session);
|
|
const keyStatusMap = session.keyStatuses;
|
|
let hasExpiredKeys = false;
|
|
|
|
keyStatusMap.forEach((status, keyId) => {
|
|
// The spec has changed a few times on the exact order of arguments here.
|
|
// As of 2016-06-30, Edge has the order reversed compared to the current
|
|
// EME spec. Given the back and forth in the spec, it may not be the only
|
|
// one. Try to detect this and compensate:
|
|
if (typeof keyId == 'string') {
|
|
const tmp = keyId;
|
|
keyId = /** @type {!ArrayBuffer} */(status);
|
|
status = /** @type {string} */(tmp);
|
|
}
|
|
|
|
// Microsoft's implementation in Edge seems to present key IDs as
|
|
// little-endian UUIDs, rather than big-endian or just plain array of
|
|
// bytes.
|
|
// standard: 6e 5a 1d 26 - 27 57 - 47 d7 - 80 46 ea a5 d1 d3 4b 5a
|
|
// on Edge: 26 1d 5a 6e - 57 27 - d7 47 - 80 46 ea a5 d1 d3 4b 5a
|
|
// Bug filed: https://bit.ly/2thuzXu
|
|
|
|
// NOTE that we skip this if byteLength != 16. This is used for Edge
|
|
// which uses single-byte dummy key IDs.
|
|
// However, unlike Edge and Chromecast, Tizen doesn't have this problem.
|
|
if (shaka.media.DrmEngine.isPlayReadyKeySystem(
|
|
this.currentDrmInfo_.keySystem) &&
|
|
keyId.byteLength == 16 &&
|
|
shaka.util.Platform.isEdge()) {
|
|
// Read out some fields in little-endian:
|
|
const dataView = shaka.util.BufferUtils.toDataView(keyId);
|
|
const part0 = dataView.getUint32(0, /* LE= */ true);
|
|
const part1 = dataView.getUint16(4, /* LE= */ true);
|
|
const part2 = dataView.getUint16(6, /* LE= */ true);
|
|
// Write it back in big-endian:
|
|
dataView.setUint32(0, part0, /* BE= */ false);
|
|
dataView.setUint16(4, part1, /* BE= */ false);
|
|
dataView.setUint16(6, part2, /* BE= */ false);
|
|
}
|
|
|
|
if (status != 'status-pending') {
|
|
found.loaded = true;
|
|
}
|
|
|
|
if (!found) {
|
|
// We can get a key status changed for a closed session after it has
|
|
// been removed from |activeSessions_|. If it is closed, none of its
|
|
// keys should be usable.
|
|
goog.asserts.assert(
|
|
status != 'usable', 'Usable keys found in closed session');
|
|
}
|
|
|
|
if (status == 'expired') {
|
|
hasExpiredKeys = true;
|
|
}
|
|
|
|
const keyIdHex = shaka.util.Uint8ArrayUtils.toHex(keyId);
|
|
|
|
this.keyStatusByKeyId_.set(keyIdHex, status);
|
|
});
|
|
|
|
// If the session has expired, close it.
|
|
// Some CDMs do not have sub-second time resolution, so the key status may
|
|
// fire with hundreds of milliseconds left until the stated expiration time.
|
|
const msUntilExpiration = session.expiration - Date.now();
|
|
if (msUntilExpiration < 0 || (hasExpiredKeys && msUntilExpiration < 1000)) {
|
|
// If this is part of a remove(), we don't want to close the session until
|
|
// the update is complete. Otherwise, we will orphan the session.
|
|
if (found && !found.updatePromise) {
|
|
shaka.log.debug('Session has expired', session.sessionId);
|
|
this.activeSessions_.delete(session);
|
|
session.close().catch(() => {}); // Silence uncaught rejection errors
|
|
}
|
|
}
|
|
|
|
if (!this.areAllSessionsLoaded_()) {
|
|
// Don't announce key statuses or resolve the "all loaded" promise until
|
|
// everything is loaded.
|
|
return;
|
|
}
|
|
|
|
this.allSessionsLoaded_.resolve();
|
|
|
|
// Batch up key status changes before checking them or notifying Player.
|
|
// This handles cases where the statuses of multiple sessions are set
|
|
// simultaneously by the browser before dispatching key status changes for
|
|
// each of them. By batching these up, we only send one status change event
|
|
// and at most one EXPIRED error on expiration.
|
|
this.keyStatusTimer_.tickAfter(
|
|
/* seconds= */ shaka.media.DrmEngine.KEY_STATUS_BATCH_TIME);
|
|
}
|
|
|
|
/** @private */
|
|
processKeyStatusChanges_() {
|
|
const privateMap = this.keyStatusByKeyId_;
|
|
const publicMap = this.announcedKeyStatusByKeyId_;
|
|
|
|
// Copy the latest key statuses into the publicly-accessible map.
|
|
publicMap.clear();
|
|
privateMap.forEach((status, keyId) => publicMap.set(keyId, status));
|
|
|
|
// If all keys are expired, fire an error. |every| is always true for an
|
|
// empty array but we shouldn't fire an error for a lack of key status info.
|
|
const statuses = Array.from(publicMap.values());
|
|
const allExpired = statuses.length &&
|
|
statuses.every((status) => status == 'expired');
|
|
|
|
if (allExpired) {
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.DRM,
|
|
shaka.util.Error.Code.EXPIRED));
|
|
}
|
|
|
|
this.playerInterface_.onKeyStatus(shaka.util.MapUtils.asObject(publicMap));
|
|
}
|
|
|
|
/**
|
|
* Returns true if the browser has recent EME APIs.
|
|
*
|
|
* @return {boolean}
|
|
*/
|
|
static isBrowserSupported() {
|
|
const basic =
|
|
!!window.MediaKeys &&
|
|
!!window.navigator &&
|
|
!!window.navigator.requestMediaKeySystemAccess &&
|
|
!!window.MediaKeySystemAccess &&
|
|
// eslint-disable-next-line no-restricted-syntax
|
|
!!window.MediaKeySystemAccess.prototype.getConfiguration;
|
|
|
|
return basic;
|
|
}
|
|
|
|
/**
|
|
* Returns a Promise to a map of EME support for well-known key systems.
|
|
*
|
|
* @return {!Promise.<!Object.<string, ?shaka.extern.DrmSupportType>>}
|
|
*/
|
|
static async probeSupport() {
|
|
goog.asserts.assert(shaka.media.DrmEngine.isBrowserSupported(),
|
|
'Must have basic EME support');
|
|
|
|
const testKeySystems = [
|
|
'org.w3.clearkey',
|
|
'com.widevine.alpha',
|
|
'com.microsoft.playready',
|
|
'com.microsoft.playready.recommendation',
|
|
'com.apple.fps.3_0',
|
|
'com.apple.fps.2_0',
|
|
'com.apple.fps.1_0',
|
|
'com.apple.fps',
|
|
'com.adobe.primetime',
|
|
];
|
|
|
|
const basicVideoCapabilities = [
|
|
{contentType: 'video/mp4; codecs="avc1.42E01E"'},
|
|
{contentType: 'video/webm; codecs="vp8"'},
|
|
];
|
|
|
|
const basicConfig = {
|
|
initDataTypes: ['cenc'],
|
|
videoCapabilities: basicVideoCapabilities,
|
|
};
|
|
const offlineConfig = {
|
|
videoCapabilities: basicVideoCapabilities,
|
|
persistentState: 'required',
|
|
sessionTypes: ['persistent-license'],
|
|
};
|
|
|
|
// Try the offline config first, then fall back to the basic config.
|
|
const configs = [offlineConfig, basicConfig];
|
|
|
|
/** @type {!Map.<string, ?shaka.extern.DrmSupportType>} */
|
|
const support = new Map();
|
|
|
|
const testSystem = async (keySystem) => {
|
|
try {
|
|
// Our Polyfill will reject anything apart com.apple.fps key systems.
|
|
// It seems the Safari modern EME API will allow to request a
|
|
// MediaKeySystemAccess for the ClearKey CDM, create and update a key
|
|
// session but playback will never start
|
|
// Safari bug: https://bugs.webkit.org/show_bug.cgi?id=231006
|
|
if (keySystem === 'org.w3.clearkey' &&
|
|
shaka.util.Platform.isSafari()) {
|
|
throw new Error('Unsupported keySystem');
|
|
}
|
|
|
|
const access = await navigator.requestMediaKeySystemAccess(
|
|
keySystem, configs);
|
|
|
|
// Edge doesn't return supported session types, but current versions
|
|
// do not support persistent-license. If sessionTypes is missing,
|
|
// assume no support for persistent-license.
|
|
// TODO: Polyfill Edge to return known supported session types.
|
|
// Edge bug: https://bit.ly/2IeKzho
|
|
const sessionTypes = access.getConfiguration().sessionTypes;
|
|
let persistentState = sessionTypes ?
|
|
sessionTypes.includes('persistent-license') : false;
|
|
|
|
// Tizen 3.0 doesn't support persistent licenses, but reports that it
|
|
// does. It doesn't fail until you call update() with a license
|
|
// response, which is way too late.
|
|
// This is a work-around for #894.
|
|
if (shaka.util.Platform.isTizen3()) {
|
|
persistentState = false;
|
|
}
|
|
|
|
support.set(keySystem, {persistentState: persistentState});
|
|
await access.createMediaKeys();
|
|
} catch (e) {
|
|
// Either the request failed or createMediaKeys failed.
|
|
// Either way, write null to the support object.
|
|
support.set(keySystem, null);
|
|
}
|
|
};
|
|
|
|
// Test each key system.
|
|
const tests = testKeySystems.map((keySystem) => testSystem(keySystem));
|
|
await Promise.all(tests);
|
|
return shaka.util.MapUtils.asObject(support);
|
|
}
|
|
|
|
/** @private */
|
|
onPlay_() {
|
|
for (const event of this.mediaKeyMessageEvents_) {
|
|
this.sendLicenseRequest_(event);
|
|
}
|
|
|
|
this.initialRequestsSent_ = true;
|
|
this.mediaKeyMessageEvents_ = [];
|
|
}
|
|
|
|
/**
|
|
* Close a drm session while accounting for a bug in Chrome. Sometimes the
|
|
* Promise returned by close() never resolves.
|
|
*
|
|
* See issue #2741 and http://crbug.com/1108158.
|
|
* @param {!MediaKeySession} session
|
|
* @return {!Promise}
|
|
* @private
|
|
*/
|
|
async closeSession_(session) {
|
|
const DrmEngine = shaka.media.DrmEngine;
|
|
|
|
const timeout = new Promise((resolve, reject) => {
|
|
const timer = new shaka.util.Timer(reject);
|
|
timer.tickAfter(DrmEngine.CLOSE_TIMEOUT_);
|
|
});
|
|
|
|
try {
|
|
await Promise.race([
|
|
Promise.all([session.close(), session.closed]),
|
|
timeout,
|
|
]);
|
|
} catch (e) {
|
|
shaka.log.warning('Timeout waiting for session close');
|
|
}
|
|
}
|
|
|
|
/** @private */
|
|
async closeOpenSessions_() {
|
|
// Close all open sessions.
|
|
const openSessions = Array.from(this.activeSessions_.entries());
|
|
this.activeSessions_.clear();
|
|
|
|
// Close all sessions before we remove media keys from the video element.
|
|
await Promise.all(openSessions.map(async ([session, metadata]) => {
|
|
try {
|
|
/**
|
|
* Special case when a persistent-license session has been initiated,
|
|
* without being registered in the offline sessions at start-up.
|
|
* We should remove the session to prevent it from being orphaned after
|
|
* the playback session ends
|
|
*/
|
|
if (!this.initializedForStorage_ &&
|
|
!this.offlineSessionIds_.includes(session.sessionId) &&
|
|
metadata.type === 'persistent-license') {
|
|
shaka.log.v1('Removing session', session.sessionId);
|
|
|
|
await session.remove();
|
|
} else {
|
|
shaka.log.v1('Closing session', session.sessionId, metadata);
|
|
|
|
await this.closeSession_(session);
|
|
}
|
|
} catch (error) {
|
|
// Ignore errors when closing the sessions. Closing a session that
|
|
// generated no key requests will throw an error.
|
|
|
|
shaka.log.error('Failed to close or remove the session', error);
|
|
}
|
|
}));
|
|
}
|
|
|
|
/**
|
|
* Check if a variant is likely to be supported by DrmEngine. This will err on
|
|
* the side of being too accepting and may not reject a variant that it will
|
|
* later fail to play.
|
|
*
|
|
* @param {!shaka.extern.Variant} variant
|
|
* @return {boolean}
|
|
*/
|
|
supportsVariant(variant) {
|
|
/** @type {?shaka.extern.Stream} */
|
|
const audio = variant.audio;
|
|
/** @type {?shaka.extern.Stream} */
|
|
const video = variant.video;
|
|
|
|
if (audio && audio.encrypted) {
|
|
const audioContentType = shaka.media.DrmEngine.computeMimeType_(audio);
|
|
if (!this.willSupport(audioContentType)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (video && video.encrypted) {
|
|
const videoContentType = shaka.media.DrmEngine.computeMimeType_(video);
|
|
if (!this.willSupport(videoContentType)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
const keySystem = shaka.media.DrmEngine.keySystem(this.currentDrmInfo_);
|
|
const drmInfos = this.getVariantDrmInfos_(variant);
|
|
|
|
return drmInfos.length == 0 ||
|
|
drmInfos.some((drmInfo) => drmInfo.keySystem == keySystem);
|
|
}
|
|
|
|
/**
|
|
* Checks if two DrmInfos can be decrypted using the same key system.
|
|
* Clear content is considered compatible with every key system.
|
|
*
|
|
* @param {!Array.<!shaka.extern.DrmInfo>} drms1
|
|
* @param {!Array.<!shaka.extern.DrmInfo>} drms2
|
|
* @return {boolean}
|
|
*/
|
|
static areDrmCompatible(drms1, drms2) {
|
|
if (!drms1.length || !drms2.length) {
|
|
return true;
|
|
}
|
|
|
|
return shaka.media.DrmEngine.getCommonDrmInfos(
|
|
drms1, drms2).length > 0;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of drm infos that are present in both input arrays.
|
|
* If one of the arrays is empty, returns the other one since clear
|
|
* content is considered compatible with every drm info.
|
|
*
|
|
* @param {!Array.<!shaka.extern.DrmInfo>} drms1
|
|
* @param {!Array.<!shaka.extern.DrmInfo>} drms2
|
|
* @return {!Array.<!shaka.extern.DrmInfo>}
|
|
*/
|
|
static getCommonDrmInfos(drms1, drms2) {
|
|
if (!drms1.length) {
|
|
return drms2;
|
|
}
|
|
if (!drms2.length) {
|
|
return drms1;
|
|
}
|
|
|
|
const commonDrms = [];
|
|
|
|
for (const drm1 of drms1) {
|
|
for (const drm2 of drms2) {
|
|
// This method is only called to compare drmInfos of a video and an
|
|
// audio adaptations, so we shouldn't have to worry about checking
|
|
// robustness.
|
|
if (drm1.keySystem == drm2.keySystem) {
|
|
/** @type {Array<shaka.extern.InitDataOverride>} */
|
|
let initData = [];
|
|
initData = initData.concat(drm1.initData || []);
|
|
initData = initData.concat(drm2.initData || []);
|
|
initData = initData.filter((d, i) => {
|
|
return d.keyId === undefined || i === initData.findIndex((d2) => {
|
|
return d2.keyId === d.keyId;
|
|
});
|
|
});
|
|
|
|
const keyIds = drm1.keyIds && drm2.keyIds ?
|
|
new Set([...drm1.keyIds, ...drm2.keyIds]) :
|
|
drm1.keyIds || drm2.keyIds;
|
|
const mergedDrm = {
|
|
keySystem: drm1.keySystem,
|
|
licenseServerUri: drm1.licenseServerUri || drm2.licenseServerUri,
|
|
distinctiveIdentifierRequired: drm1.distinctiveIdentifierRequired ||
|
|
drm2.distinctiveIdentifierRequired,
|
|
persistentStateRequired: drm1.persistentStateRequired ||
|
|
drm2.persistentStateRequired,
|
|
videoRobustness: drm1.videoRobustness || drm2.videoRobustness,
|
|
audioRobustness: drm1.audioRobustness || drm2.audioRobustness,
|
|
serverCertificate: drm1.serverCertificate || drm2.serverCertificate,
|
|
serverCertificateUri: drm1.serverCertificateUri ||
|
|
drm2.serverCertificateUri,
|
|
initData,
|
|
keyIds,
|
|
};
|
|
commonDrms.push(mergedDrm);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return commonDrms;
|
|
}
|
|
|
|
/**
|
|
* Concat the audio and video drmInfos in a variant.
|
|
* @param {shaka.extern.Variant} variant
|
|
* @return {!Array.<!shaka.extern.DrmInfo>}
|
|
* @private
|
|
*/
|
|
getVariantDrmInfos_(variant) {
|
|
const videoDrmInfos = variant.video ? variant.video.drmInfos : [];
|
|
const audioDrmInfos = variant.audio ? variant.audio.drmInfos : [];
|
|
return videoDrmInfos.concat(audioDrmInfos);
|
|
}
|
|
|
|
/**
|
|
* Called in an interval timer to poll the expiration times of the sessions.
|
|
* We don't get an event from EME when the expiration updates, so we poll it
|
|
* so we can fire an event when it happens.
|
|
* @private
|
|
*/
|
|
pollExpiration_() {
|
|
this.activeSessions_.forEach((metadata, session) => {
|
|
const oldTime = metadata.oldExpiration;
|
|
let newTime = session.expiration;
|
|
if (isNaN(newTime)) {
|
|
newTime = Infinity;
|
|
}
|
|
|
|
if (newTime != oldTime) {
|
|
this.playerInterface_.onExpirationUpdated(session.sessionId, newTime);
|
|
metadata.oldExpiration = newTime;
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @return {boolean}
|
|
* @private
|
|
*/
|
|
areAllSessionsLoaded_() {
|
|
const metadatas = this.activeSessions_.values();
|
|
return shaka.util.Iterables.every(metadatas, (data) => data.loaded);
|
|
}
|
|
|
|
/**
|
|
* Replace the drm info used in each variant in |variants| to reflect each
|
|
* key service in |keySystems|.
|
|
*
|
|
* @param {!Array.<shaka.extern.Variant>} variants
|
|
* @param {!Map.<string, string>} keySystems
|
|
* @private
|
|
*/
|
|
static replaceDrmInfo_(variants, keySystems) {
|
|
const drmInfos = [];
|
|
|
|
keySystems.forEach((uri, keySystem) => {
|
|
drmInfos.push({
|
|
keySystem: keySystem,
|
|
licenseServerUri: uri,
|
|
distinctiveIdentifierRequired: false,
|
|
persistentStateRequired: false,
|
|
audioRobustness: '',
|
|
videoRobustness: '',
|
|
serverCertificate: null,
|
|
serverCertificateUri: '',
|
|
initData: [],
|
|
keyIds: new Set(),
|
|
});
|
|
});
|
|
|
|
for (const variant of variants) {
|
|
if (variant.video) {
|
|
variant.video.drmInfos = drmInfos;
|
|
}
|
|
if (variant.audio) {
|
|
variant.audio.drmInfos = drmInfos;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Creates a DrmInfo object describing the settings used to initialize the
|
|
* engine.
|
|
*
|
|
* @param {string} keySystem
|
|
* @param {!Array.<shaka.extern.DrmInfo>} drmInfos
|
|
* @return {shaka.extern.DrmInfo}
|
|
*
|
|
* @private
|
|
*/
|
|
createDrmInfoByInfos_(keySystem, drmInfos) {
|
|
/** @type {!Array.<string>} */
|
|
const licenseServers = [];
|
|
|
|
/** @type {!Array.<string>} */
|
|
const serverCertificateUris = [];
|
|
|
|
/** @type {!Array.<!Uint8Array>} */
|
|
const serverCerts = [];
|
|
|
|
/** @type {!Array.<!shaka.extern.InitDataOverride>} */
|
|
const initDatas = [];
|
|
|
|
/** @type {!Set.<string>} */
|
|
const keyIds = new Set();
|
|
|
|
shaka.media.DrmEngine.processDrmInfos_(
|
|
drmInfos, licenseServers, serverCerts,
|
|
serverCertificateUris, initDatas, keyIds);
|
|
|
|
if (serverCerts.length > 1) {
|
|
shaka.log.warning('Multiple unique server certificates found! ' +
|
|
'Only the first will be used.');
|
|
}
|
|
|
|
if (licenseServers.length > 1) {
|
|
shaka.log.warning('Multiple unique license server URIs found! ' +
|
|
'Only the first will be used.');
|
|
}
|
|
|
|
if (serverCertificateUris.length > 1) {
|
|
shaka.log.warning('Multiple unique server certificate URIs found! ' +
|
|
'Only the first will be used.');
|
|
}
|
|
|
|
const defaultSessionType =
|
|
this.usePersistentLicenses_ ? 'persistent-license' : 'temporary';
|
|
|
|
/** @type {shaka.extern.DrmInfo} */
|
|
const res = {
|
|
keySystem,
|
|
licenseServerUri: licenseServers[0],
|
|
distinctiveIdentifierRequired: drmInfos[0].distinctiveIdentifierRequired,
|
|
persistentStateRequired: drmInfos[0].persistentStateRequired,
|
|
sessionType: drmInfos[0].sessionType || defaultSessionType,
|
|
audioRobustness: drmInfos[0].audioRobustness || '',
|
|
videoRobustness: drmInfos[0].videoRobustness || '',
|
|
serverCertificate: serverCerts[0],
|
|
serverCertificateUri: serverCertificateUris[0],
|
|
initData: initDatas,
|
|
keyIds,
|
|
};
|
|
|
|
for (const info of drmInfos) {
|
|
if (info.distinctiveIdentifierRequired) {
|
|
res.distinctiveIdentifierRequired = info.distinctiveIdentifierRequired;
|
|
}
|
|
|
|
if (info.persistentStateRequired) {
|
|
res.persistentStateRequired = info.persistentStateRequired;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* Creates a DrmInfo object describing the settings used to initialize the
|
|
* engine.
|
|
*
|
|
* @param {string} keySystem
|
|
* @param {MediaKeySystemConfiguration} config
|
|
* @return {shaka.extern.DrmInfo}
|
|
*
|
|
* @private
|
|
*/
|
|
static createDrmInfoByConfigs_(keySystem, config) {
|
|
/** @type {!Array.<string>} */
|
|
const licenseServers = [];
|
|
|
|
/** @type {!Array.<string>} */
|
|
const serverCertificateUris = [];
|
|
|
|
/** @type {!Array.<!Uint8Array>} */
|
|
const serverCerts = [];
|
|
|
|
/** @type {!Array.<!shaka.extern.InitDataOverride>} */
|
|
const initDatas = [];
|
|
|
|
/** @type {!Set.<string>} */
|
|
const keyIds = new Set();
|
|
|
|
// TODO: refactor, don't stick drmInfos onto MediaKeySystemConfiguration
|
|
shaka.media.DrmEngine.processDrmInfos_(
|
|
config['drmInfos'], licenseServers, serverCerts,
|
|
serverCertificateUris, initDatas, keyIds);
|
|
|
|
if (serverCerts.length > 1) {
|
|
shaka.log.warning('Multiple unique server certificates found! ' +
|
|
'Only the first will be used.');
|
|
}
|
|
|
|
if (serverCertificateUris.length > 1) {
|
|
shaka.log.warning('Multiple unique server certificate URIs found! ' +
|
|
'Only the first will be used.');
|
|
}
|
|
|
|
if (licenseServers.length > 1) {
|
|
shaka.log.warning('Multiple unique license server URIs found! ' +
|
|
'Only the first will be used.');
|
|
}
|
|
|
|
// TODO: This only works when all DrmInfo have the same robustness.
|
|
const audioRobustness =
|
|
config.audioCapabilities ? config.audioCapabilities[0].robustness : '';
|
|
const videoRobustness =
|
|
config.videoCapabilities ? config.videoCapabilities[0].robustness : '';
|
|
|
|
const distinctiveIdentifier = config.distinctiveIdentifier;
|
|
return {
|
|
keySystem,
|
|
licenseServerUri: licenseServers[0],
|
|
distinctiveIdentifierRequired: (distinctiveIdentifier == 'required'),
|
|
persistentStateRequired: (config.persistentState == 'required'),
|
|
sessionType: config.sessionTypes[0] || 'temporary',
|
|
audioRobustness: audioRobustness || '',
|
|
videoRobustness: videoRobustness || '',
|
|
serverCertificate: serverCerts[0],
|
|
serverCertificateUri: serverCertificateUris[0],
|
|
initData: initDatas,
|
|
keyIds,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Extract license server, server cert, and init data from |drmInfos|, taking
|
|
* care to eliminate duplicates.
|
|
*
|
|
* @param {!Array.<shaka.extern.DrmInfo>} drmInfos
|
|
* @param {!Array.<string>} licenseServers
|
|
* @param {!Array.<!Uint8Array>} serverCerts
|
|
* @param {!Array.<string>} serverCertificateUris
|
|
* @param {!Array.<!shaka.extern.InitDataOverride>} initDatas
|
|
* @param {!Set.<string>} keyIds
|
|
* @private
|
|
*/
|
|
static processDrmInfos_(
|
|
drmInfos, licenseServers, serverCerts,
|
|
serverCertificateUris, initDatas, keyIds) {
|
|
/** @type {function(shaka.extern.InitDataOverride,
|
|
* shaka.extern.InitDataOverride):boolean} */
|
|
const initDataOverrideEqual = (a, b) => {
|
|
if (a.keyId && a.keyId == b.keyId) {
|
|
// Two initDatas with the same keyId are considered to be the same,
|
|
// unless that "same keyId" is null.
|
|
return true;
|
|
}
|
|
return a.initDataType == b.initDataType &&
|
|
shaka.util.BufferUtils.equal(a.initData, b.initData);
|
|
};
|
|
|
|
for (const drmInfo of drmInfos) {
|
|
// Build an array of unique license servers.
|
|
if (!licenseServers.includes(drmInfo.licenseServerUri)) {
|
|
licenseServers.push(drmInfo.licenseServerUri);
|
|
}
|
|
|
|
// Build an array of unique license servers.
|
|
if (!serverCertificateUris.includes(drmInfo.serverCertificateUri)) {
|
|
serverCertificateUris.push(drmInfo.serverCertificateUri);
|
|
}
|
|
|
|
// Build an array of unique server certs.
|
|
if (drmInfo.serverCertificate) {
|
|
const found = serverCerts.some(
|
|
(cert) => shaka.util.BufferUtils.equal(
|
|
cert, drmInfo.serverCertificate));
|
|
if (!found) {
|
|
serverCerts.push(drmInfo.serverCertificate);
|
|
}
|
|
}
|
|
|
|
// Build an array of unique init datas.
|
|
if (drmInfo.initData) {
|
|
for (const initDataOverride of drmInfo.initData) {
|
|
const found = initDatas.some(
|
|
(initData) =>
|
|
initDataOverrideEqual(initData, initDataOverride));
|
|
if (!found) {
|
|
initDatas.push(initDataOverride);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (drmInfo.keyIds) {
|
|
for (const keyId of drmInfo.keyIds) {
|
|
keyIds.add(keyId);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Use |servers| and |advancedConfigs| to fill in missing values in drmInfo
|
|
* that the parser left blank. Before working with any drmInfo, it should be
|
|
* passed through here as it is uncommon for drmInfo to be complete when
|
|
* fetched from a manifest because most manifest formats do not have the
|
|
* required information.
|
|
*
|
|
* @param {shaka.extern.DrmInfo} drmInfo
|
|
* @param {!Map.<string, string>} servers
|
|
* @param {!Map.<string, shaka.extern.AdvancedDrmConfiguration>}
|
|
* advancedConfigs
|
|
* @private
|
|
*/
|
|
static fillInDrmInfoDefaults_(drmInfo, servers, advancedConfigs) {
|
|
if (!drmInfo.keySystem) {
|
|
// This is a placeholder from the manifest parser for an unrecognized key
|
|
// system. Skip this entry, to avoid logging nonsensical errors.
|
|
return;
|
|
}
|
|
|
|
// The order of preference for drmInfo:
|
|
// 1. Clear Key config, used for debugging, should override everything else.
|
|
// (The application can still specify a clearkey license server.)
|
|
// 2. Application-configured servers, if any are present, should override
|
|
// anything from the manifest. Nuance: if key system A is in the
|
|
// manifest and key system B is in the player config, only B will be
|
|
// used, not A.
|
|
// 3. Manifest-provided license servers are only used if nothing else is
|
|
// specified.
|
|
// This is important because it allows the application a clear way to
|
|
// indicate which DRM systems should be used on platforms with multiple DRM
|
|
// systems.
|
|
// The only way to get license servers from the manifest is not to specify
|
|
// any in your player config.
|
|
|
|
if (drmInfo.keySystem == 'org.w3.clearkey' && drmInfo.licenseServerUri) {
|
|
// Preference 1: Clear Key with pre-configured keys will have a data URI
|
|
// assigned as its license server. Don't change anything.
|
|
return;
|
|
} else if (servers.size) {
|
|
// Preference 2: If anything is configured at the application level,
|
|
// override whatever was in the manifest.
|
|
const server = servers.get(drmInfo.keySystem) || '';
|
|
|
|
drmInfo.licenseServerUri = server;
|
|
} else {
|
|
// Preference 3: Keep whatever we had in drmInfo.licenseServerUri, which
|
|
// comes from the manifest.
|
|
}
|
|
|
|
if (!drmInfo.keyIds) {
|
|
drmInfo.keyIds = new Set();
|
|
}
|
|
|
|
const advancedConfig = advancedConfigs.get(drmInfo.keySystem);
|
|
|
|
if (advancedConfig) {
|
|
if (!drmInfo.distinctiveIdentifierRequired) {
|
|
drmInfo.distinctiveIdentifierRequired =
|
|
advancedConfig.distinctiveIdentifierRequired;
|
|
}
|
|
|
|
if (!drmInfo.persistentStateRequired) {
|
|
drmInfo.persistentStateRequired =
|
|
advancedConfig.persistentStateRequired;
|
|
}
|
|
|
|
if (!drmInfo.videoRobustness) {
|
|
drmInfo.videoRobustness = advancedConfig.videoRobustness;
|
|
}
|
|
|
|
if (!drmInfo.audioRobustness) {
|
|
drmInfo.audioRobustness = advancedConfig.audioRobustness;
|
|
}
|
|
|
|
if (!drmInfo.serverCertificate) {
|
|
drmInfo.serverCertificate = advancedConfig.serverCertificate;
|
|
}
|
|
|
|
if (advancedConfig.sessionType) {
|
|
drmInfo.sessionType = advancedConfig.sessionType;
|
|
}
|
|
|
|
if (!drmInfo.serverCertificateUri) {
|
|
drmInfo.serverCertificateUri = advancedConfig.serverCertificateUri;
|
|
}
|
|
}
|
|
|
|
// Chromecast has a variant of PlayReady that uses a different key
|
|
// system ID. Since manifest parsers convert the standard PlayReady
|
|
// UUID to the standard PlayReady key system ID, here we will switch
|
|
// to the Chromecast version if we are running on that platform.
|
|
// Note that this must come after fillInDrmInfoDefaults_, since the
|
|
// player config uses the standard PlayReady ID for license server
|
|
// configuration.
|
|
if (window.cast && window.cast.__platform__) {
|
|
if (drmInfo.keySystem == 'com.microsoft.playready') {
|
|
drmInfo.keySystem = 'com.chromecast.playready';
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @typedef {{
|
|
* loaded: boolean,
|
|
* initData: Uint8Array,
|
|
* oldExpiration: number,
|
|
* type: string,
|
|
* updatePromise: shaka.util.PublicPromise
|
|
* }}
|
|
*
|
|
* @description A record to track sessions and suppress duplicate init data.
|
|
* @property {boolean} loaded
|
|
* True once the key status has been updated (to a non-pending state). This
|
|
* does not mean the session is 'usable'.
|
|
* @property {Uint8Array} initData
|
|
* The init data used to create the session.
|
|
* @property {!MediaKeySession} session
|
|
* The session object.
|
|
* @property {number} oldExpiration
|
|
* The expiration of the session on the last check. This is used to fire
|
|
* an event when it changes.
|
|
* @property {string} type
|
|
* The session type
|
|
* @property {shaka.util.PublicPromise} updatePromise
|
|
* An optional Promise that will be resolved/rejected on the next update()
|
|
* call. This is used to track the 'license-release' message when calling
|
|
* remove().
|
|
*/
|
|
shaka.media.DrmEngine.SessionMetaData;
|
|
|
|
|
|
/**
|
|
* @typedef {{
|
|
* netEngine: !shaka.net.NetworkingEngine,
|
|
* onError: function(!shaka.util.Error),
|
|
* onKeyStatus: function(!Object.<string,string>),
|
|
* onExpirationUpdated: function(string,number),
|
|
* onEvent: function(!Event)
|
|
* }}
|
|
*
|
|
* @property {shaka.net.NetworkingEngine} netEngine
|
|
* The NetworkingEngine instance to use. The caller retains ownership.
|
|
* @property {function(!shaka.util.Error)} onError
|
|
* Called when an error occurs. If the error is recoverable (see
|
|
* {@link shaka.util.Error}) then the caller may invoke either
|
|
* StreamingEngine.switch*() or StreamingEngine.seeked() to attempt recovery.
|
|
* @property {function(!Object.<string,string>)} onKeyStatus
|
|
* Called when key status changes. The argument is a map of hex key IDs to
|
|
* statuses.
|
|
* @property {function(string,number)} onExpirationUpdated
|
|
* Called when the session expiration value changes.
|
|
* @property {function(!Event)} onEvent
|
|
* Called when an event occurs that should be sent to the app.
|
|
*/
|
|
shaka.media.DrmEngine.PlayerInterface;
|
|
|
|
/**
|
|
* The amount of time, in seconds, we wait to consider a session closed.
|
|
* This allows us to work around Chrome bug https://crbug.com/1108158.
|
|
* @private {number}
|
|
*/
|
|
shaka.media.DrmEngine.CLOSE_TIMEOUT_ = 1;
|
|
|
|
|
|
/**
|
|
* The amount of time, in seconds, we wait to consider session loaded even if no
|
|
* key status information is available. This allows us to support browsers/CDMs
|
|
* without key statuses.
|
|
* @private {number}
|
|
*/
|
|
shaka.media.DrmEngine.SESSION_LOAD_TIMEOUT_ = 5;
|
|
|
|
|
|
/**
|
|
* The amount of time, in seconds, we wait to batch up rapid key status changes.
|
|
* This allows us to avoid multiple expiration events in most cases.
|
|
* @type {number}
|
|
*/
|
|
shaka.media.DrmEngine.KEY_STATUS_BATCH_TIME = 0.5;
|
|
|
|
|
|
/**
|
|
* Contains the suggested "default" key ID used by EME polyfills that do not
|
|
* have a per-key key status. See w3c/encrypted-media#32.
|
|
* @type {!shaka.util.Lazy.<!ArrayBuffer>}
|
|
*/
|
|
shaka.media.DrmEngine.DUMMY_KEY_ID = new shaka.util.Lazy(
|
|
() => shaka.util.BufferUtils.toArrayBuffer(new Uint8Array([0])));
|