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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 ObjectUtils from '../utils/ObjectUtils.js';
import FactoryMaker from '../../core/FactoryMaker.js';
const DEFAULT_INDEX = NaN;
class Node {
constructor(_baseUrls, _selectedIdx) {
this.data = {
baseUrls: _baseUrls || null,
selectedIdx: _selectedIdx || DEFAULT_INDEX
};
this.children = [];
}
}
function BaseURLTreeModel() {
let instance,
root,
adapter,
contentSteeringController;
const context = this.context;
const objectUtils = ObjectUtils(context).getInstance();
function setup() {
reset();
}
function setConfig(config) {
if (config.adapter) {
adapter = config.adapter;
}
if (config.contentSteeringController) {
contentSteeringController = config.contentSteeringController
}
}
function checkConfig() {
if (!adapter || !adapter.hasOwnProperty('getBaseURLsFromElement') || !adapter.hasOwnProperty('getRepresentationSortFunction')) {
throw new Error('setConfig function has to be called previously');
}
}
function updateChildData(node, index, element) {
const baseUrls = _getAvailableBaseUrls(element);
if (!node[index]) {
node[index] = new Node(baseUrls);
} else E{
if (!objectUtils.areEqual(baseUrls, node[index].data.baseUrls)) {
node[index].data.baseUrls = baseUrls;
node[index].data.selectedIdx = DEFAULT_INDEX;
}
}
}
function getBaseURLCollectionsFromManifest(manifest) {
checkConfig();
const baseUrls = _getAvailableBaseUrls(manifest)
if (!objectUtils.areEqual(baseUrls, root.data.baseUrls)) {
root.data.baseUrls = baseUrls;
root.data.selectedIdx = DEFAULT_INDEX;
}
if (manifest && manifest.Period) {
manifest.Period.forEach((p, pi) => {
updateChildData(root.children, pi, p);
if (p.AdaptationSet) {
p.AdaptationSet.forEach((a, ai) => {
updateChildData(root.children[pi].children, ai, a);
if (a.Representation) {
a.Representation.sort(
adapter.getRepresentationSortFunction()
).forEach((r, ri) => {
updateChildData(
root.children[pi].children[ai].children,
ri,
r
);
});
}
});
}
});
}
}
function _getAvailableBaseUrls(root) {
let targetBaseUrls = adapter.getBaseURLsFromElement(root);
const synthesizedBaseUrls = contentSteeringController.getSynthesizedBaseUrlElements(targetBaseUrls);
Iif (synthesizedBaseUrls && synthesizedBaseUrls.length > 0) {
synthesizedBaseUrls.forEach((synthesizedBaseUrl) => {
// If we already have a BaseURL with the same serviceLocation, we overwrite it with the synthesized one
const foundIndex = targetBaseUrls.findIndex((elem) => {
return elem.serviceLocation === synthesizedBaseUrl.serviceLocation
})
if (foundIndex !== -1) {
targetBaseUrls[foundIndex] = synthesizedBaseUrl;
} else {
targetBaseUrls.push(synthesizedBaseUrl)
}
})
}
return targetBaseUrls;
}
function getBaseUrls(manifest) {
return _getAvailableBaseUrls(manifest);
}
function walk(callback, node) {
const target = node || root;
callback(target.data);
if (target.children) {
target.children.forEach(child => walk(callback, child));
}
}
function invalidateSelectedIndexes(serviceLocation) {
walk((data) => {
if (!isNaN(data.selectedIdx)) {
if (serviceLocation === data.baseUrls[data.selectedIdx].serviceLocation) {
data.selectedIdx = DEFAULT_INDEX;
}
}
});
}
function update(manifest) {
getBaseURLCollectionsFromManifest(manifest);
}
function reset() {
root = new Node();
}
function getForPath(path) {
let target = root;
const nodes = [target.data];
if (path) {
path.forEach(p => {
target = target.children[p];
Iif (target) {
nodes.push(target.data);
}
});
}
return nodes.filter(n => n.baseUrls.length);
}
instance = {
reset,
update,
getForPath,
invalidateSelectedIndexes,
setConfig,
getBaseUrls
};
setup();
return instance;
}
BaseURLTreeModel.__dashjs_factory_name = 'BaseURLTreeModel';
export default FactoryMaker.getClassFactory(BaseURLTreeModel);
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