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* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import DashJSError from './vo/DashJSError.js';
import URLLoader from './net/URLLoader.js';
import {HTTPRequest} from './vo/metrics/HTTPRequest.js';
import TextRequest from './vo/TextRequest.js';
import EventBus from '../core/EventBus.js';
import Events from '../core/events/Events.js';
import FactoryMaker from '../core/FactoryMaker.js';
import Errors from '../core/errors/Errors.js';
function XlinkLoader(config) {
config = config || {};
const RESOLVE_TO_ZERO = 'urn:mpeg:dash:resolve-to-zero:2013';
const context = this.context;
const eventBus = EventBus(context).getInstance();
let urlLoader = URLLoader(context).create({
errHandler: config.errHandler,
dashMetrics: config.dashMetrics,
mediaPlayerModel: config.mediaPlayerModel,
errors: Errors
});
let instance;
function load(url, element, resolveObject) {
const report = function (content, resolveToZero) {
element.resolved = true;
element.resolvedContent = content ? content : null;
eventBus.trigger(Events.XLINK_ELEMENT_LOADED, {
element: element,
resolveObject: resolveObject,
error: content || resolveToZero ?
null :
new DashJSError(
Errors.XLINK_LOADER_LOADING_FAILURE_ERROR_CODE,
Errors.XLINK_LOADER_LOADING_FAILURE_ERROR_MESSAGE + url
)
});
};
if (url === RESOLVE_TO_ZERO) {
report(null, true);
} else {
const request = new TextRequest(url, HTTPRequest.XLINK_EXPANSION_TYPE);
urlLoader.load({
request: request,
success: function (data) {
report(data);
},
error: function () {
report(null);
}
});
}
}
function reset() {
if (urlLoader) {
urlLoader.abort();
urlLoader = null;
}
}
instance = {
load: load,
reset: reset
};
return instance;
}
XlinkLoader.__dashjs_factory_name = 'XlinkLoader';
export default FactoryMaker.getClassFactory(XlinkLoader);
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