offline_net_IndexDBOfflineLoader.js
/**
* 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 IndexDBStore from '../storage/IndexDBStore';
function IndexDBOfflineLoader(config) {
config = config || {};
const context = this.context;
const urlUtils = config.urlUtils;
const constants = config.constants;
const dashConstants = config.dashConstants;
let instance,
indexDBStore;
function setup() {
indexDBStore = IndexDBStore(context).getInstance();
}
function getManifestId (url) {
let myURL = urlUtils.removeHostname(url);
var parts = myURL.split('/');
return parts[0];
}
/**
* Load manifest or fragment from indexeddb database
* @param {object} config configuration of request
*/
function load(config) {
if (config.request) {
let manifestId = getManifestId(config.request.url);
if (manifestId % 1 === 0) {
if (
config.request.mediaType === constants.AUDIO ||
config.request.mediaType === constants.VIDEO ||
config.request.mediaType === constants.TEXT ||
config.request.mediaType === constants.MUXED ||
config.request.mediaType === constants.IMAGE
) {
let suffix = config.request.type === 'InitializationSegment' ? 'init' : config.request.index;
let key = config.request.representationId + '_' + suffix;
indexDBStore.getFragmentByKey(manifestId, key).then(function (fragment) {
config.success(fragment, null, config.request.url, constants.ARRAY_BUFFER);
}).catch(function (err) {
config.error(err);
});
} else if (config.request.type === dashConstants.MPD) {
indexDBStore.getManifestById(manifestId).then(function (item) {
indexDBStore.createFragmentStore(item.fragmentStore);
config.success(item.manifest, null, config.request.url, constants.XML);
}).catch(function (err) {
config.error(config.request, 404, err);
});
}
} else {
config.error(config.request, null, 'MediaType can not be found');
}
}
}
function abort() {
// nothing to do
}
setup();
instance = {
load: load,
abort: abort
};
return instance;
}
IndexDBOfflineLoader.__dashjs_factory_name = 'IndexDBOfflineLoader';
const factory = dashjs.FactoryMaker.getClassFactory(IndexDBOfflineLoader); /* jshint ignore:line */
export default factory;