mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-24 17:35:10 +03:00
Jacob Trimble
4004bd42fd
This is part of a change to convert all usages of 'var' with either 'let' or 'const'. This takes a conservative approach for 'const' where it will only be used for aliases and storing the "original" values in tests. Change-Id: Ib137fbfde50f1330c74c040fc062aa8e2c6d1e57
119 lines
3.4 KiB
JavaScript
119 lines
3.4 KiB
JavaScript
/**
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* @license
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* Copyright 2016 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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goog.provide('shaka.offline.OfflineScheme');
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goog.require('shaka.net.NetworkingEngine');
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goog.require('shaka.offline.OfflineUri');
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goog.require('shaka.offline.StorageEngineFactory');
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goog.require('shaka.util.AbortableOperation');
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goog.require('shaka.util.Error');
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/**
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* @namespace
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* @summary A plugin that handles requests for offline content.
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* @param {string} uri
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* @param {shakaExtern.Request} request
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* @param {shaka.net.NetworkingEngine.RequestType=} requestType
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* @return {!shakaExtern.IAbortableOperation.<shakaExtern.Response>}
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* @export
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*/
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shaka.offline.OfflineScheme = function(uri, request, requestType) {
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let manifestId = shaka.offline.OfflineUri.uriToManifestId(uri);
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if (manifestId != null) {
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return shaka.offline.OfflineScheme.onManifest_(uri);
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}
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let segmentId = shaka.offline.OfflineUri.uriToSegmentId(uri);
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if (segmentId != null) {
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return shaka.offline.OfflineScheme.onSegment_(segmentId, uri);
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}
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return shaka.util.AbortableOperation.failed(
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new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.NETWORK,
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shaka.util.Error.Code.MALFORMED_OFFLINE_URI,
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uri));
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};
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/**
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* @param {string} uri
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* @return {!shakaExtern.IAbortableOperation.<shakaExtern.Response>}
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* @private
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*/
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shaka.offline.OfflineScheme.onManifest_ = function(uri) {
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/** @type {shakaExtern.Response} */
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let response = {
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uri: uri,
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data: new ArrayBuffer(0),
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headers: {'content-type': 'application/x-offline-manifest'}
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};
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return shaka.util.AbortableOperation.completed(response);
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};
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/**
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* @param {number} id
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* @param {string} uri
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* @return {!shakaExtern.IAbortableOperation.<shakaExtern.Response>}
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* @private
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*/
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shaka.offline.OfflineScheme.onSegment_ = function(id, uri) {
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/** @type {shaka.offline.IStorageEngine} */
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let storageEngine;
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let segment;
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let promise = shaka.offline.StorageEngineFactory.createStorageEngine()
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.then(function(se) {
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storageEngine = se;
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return storageEngine.getSegment(id);
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})
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.then(function(seg) {
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segment = seg;
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return storageEngine.destroy();
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})
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.then(function() {
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if (!segment) {
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throw new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.STORAGE,
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shaka.util.Error.Code.REQUESTED_ITEM_NOT_FOUND,
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id);
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}
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/** @type {shakaExtern.Response} */
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let response = {
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uri: uri,
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data: segment.data,
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headers: {}
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};
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return response;
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});
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// TODO: support abort() in OfflineScheme
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return shaka.util.AbortableOperation.notAbortable(promise);
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};
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shaka.net.NetworkingEngine.registerScheme(
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'offline', shaka.offline.OfflineScheme);
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