/**
* @license
* Copyright 2016 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
goog.provide('shaka.util.ManifestParserUtils');
goog.require('goog.Uri');
goog.require('shaka.util.Functional');
/**
* @namespace shaka.util.ManifestParserUtils
* @summary Utility functions for manifest parsing.
*/
/**
* Resolves an array of relative URIs to the given base URIs. This will result
* in M*N number of URIs.
*
* @param {!Array.<string>} baseUris
* @param {!Array.<string>} relativeUris
* @return {!Array.<string>}
*/
shaka.util.ManifestParserUtils.resolveUris = function(baseUris, relativeUris) {
const Functional = shaka.util.Functional;
if (relativeUris.length == 0) {
return baseUris;
}
let relativeAsGoog =
relativeUris.map(function(uri) { return new goog.Uri(uri); });
// Resolve each URI relative to each base URI, creating an Array of Arrays.
// Then flatten the Arrays into a single Array.
return baseUris.map(function(uri) { return new goog.Uri(uri); })
.map(function(base) { return relativeAsGoog.map(base.resolve.bind(base)); })
.reduce(Functional.collapseArrays, [])
.map(function(uri) { return uri.toString(); });
};
/**
* Creates a DrmInfo object from the given info.
*
* @param {string} keySystem
* @param {Array.<shaka.extern.InitDataOverride>} initData
* @return {shaka.extern.DrmInfo}
*/
shaka.util.ManifestParserUtils.createDrmInfo = function(keySystem, initData) {
return {
keySystem: keySystem,
licenseServerUri: '',
distinctiveIdentifierRequired: false,
persistentStateRequired: false,
audioRobustness: '',
videoRobustness: '',
serverCertificate: null,
initData: initData || [],
keyIds: [],
};
};
/**
* @enum {string}
*/
shaka.util.ManifestParserUtils.ContentType = {
VIDEO: 'video',
AUDIO: 'audio',
TEXT: 'text',
IMAGE: 'image',
APPLICATION: 'application',
};
/**
* @enum {string}
*/
shaka.util.ManifestParserUtils.TextStreamKind = {
SUBTITLE: 'subtitle',
CLOSED_CAPTION: 'caption',
};
/**
* Specifies how tolerant the player is of inaccurate segment start times and
* end times within a manifest. For example, gaps or overlaps between segments
* in a SegmentTimeline which are greater than or equal to this value will
* result in a warning message.
*
* @const {number}
*/
shaka.util.ManifestParserUtils.GAP_OVERLAP_TOLERANCE_SECONDS = 1 / 15;