mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Timothy Drews
689c2a47aa
Use 'keystatuseschange' events from EME together with cenc:default_KID from the MPD so StreamVideoSource can determine if the key system can/will decrypt a stream before it attempts to play it. This enables the Player to safely (and automatically) switch between streams that are encrypted with different keys. Support AdaptationSet @group, which is the preferred approach to safely use multiple encryption keys over multiple Representations. * Squash AdaptationSets from the same group into one StreamSetInfo. This enables support for @group without introducing special case code into StreamVideoSource and EmeManager. * Fire 'trackchanged' events when tracks becomes available/unavailable either from application restrictions or key status changes. * Pull key IDs out of DrmInfo and put them into StreamInfo so key status changes can drive per stream availability instead of per StreamSet (AdaptationSet) availability. Closes #67 Issue #160 Change-Id: Ife0814deb65715923a572b45880137a99b378035
66 lines
1.9 KiB
JavaScript
66 lines
1.9 KiB
JavaScript
/**
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* Copyright 2014 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @fileoverview String utility functions.
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*/
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goog.provide('shaka.util.StringUtils');
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/**
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* @namespace shaka.util.StringUtils
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* @summary A set of string utility functions.
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*/
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/**
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* Convert a raw string to a base64 string. The output will always use the
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* alternate encoding/alphabet also known as "base64url".
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* @param {string} str
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* @param {boolean=} opt_padding If true, pad the output with equals signs.
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* Defaults to true.
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* @return {string}
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*/
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shaka.util.StringUtils.toBase64 = function(str, opt_padding) {
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var padding = (opt_padding == undefined) ? true : opt_padding;
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var base64 = window.btoa(str).replace(/\+/g, '-').replace(/\//g, '_');
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return padding ? base64 : base64.replace(/=*$/, '');
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};
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/**
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* Convert a base64 string to a raw string. Accepts either the standard
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* alphabet or the alternate "base64url" alphabet.
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* @param {string} str
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* @return {string}
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*/
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shaka.util.StringUtils.fromBase64 = function(str) {
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return window.atob(str.replace(/-/g, '+').replace(/_/g, '/'));
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};
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/**
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* Separates every 4 characters by a space.
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* @param {string} str
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* @return {string}
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*/
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shaka.util.StringUtils.formatHexString = function(str) {
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return str.split('').reduce(
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function(acc, ch, i) {
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return acc + (i && (i % 4 == 0) ? ' ' + ch : ch);
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});
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};
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