mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-16 16:16:40 +03:00
Aaron Vaage
8040f78883
This CL replaces the old storage system with the storage muxer system. In addition to replacing the old system, this CL removes all the code that was only used by the old system. As of this change Storage Muxer support shaka player's V1, V2, and V2 indexeddb schemes and exposes a plug-in system for other offline storage components. Issue #1248 Change-Id: I1a4914477ad8db29fd0e7ad7de2f149b6497f67e
108 lines
3.1 KiB
JavaScript
108 lines
3.1 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('goog.asserts');
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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.StorageMuxer');
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goog.require('shaka.util.AbortableOperation');
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goog.require('shaka.util.Error');
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goog.require('shaka.util.IDestroyable');
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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 {shaka.extern.Request} request
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* @param {shaka.net.NetworkingEngine.RequestType=} requestType
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* @return {!shaka.extern.IAbortableOperation.<shaka.extern.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 offlineUri = shaka.offline.OfflineUri.parse(uri);
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if (offlineUri && offlineUri.isManifest()) {
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return shaka.offline.OfflineScheme.getManifest_(uri);
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}
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if (offlineUri && offlineUri.isSegment()) {
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return shaka.offline.OfflineScheme.getSegment_(
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offlineUri.key(), offlineUri);
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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 {!shaka.extern.IAbortableOperation.<shaka.extern.Response>}
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* @private
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*/
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shaka.offline.OfflineScheme.getManifest_ = function(uri) {
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/** @type {shaka.extern.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 {!shaka.offline.OfflineUri} uri
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* @return {!shaka.extern.IAbortableOperation.<shaka.extern.Response>}
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* @private
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*/
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shaka.offline.OfflineScheme.getSegment_ = function(id, uri) {
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goog.asserts.assert(
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uri.isSegment(),
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'Only segment uri\'s should be given to getSegment');
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let muxer = new shaka.offline.StorageMuxer();
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let promise = shaka.util.IDestroyable.with([muxer], async () => {
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await muxer.init();
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let cell = await muxer.getCell(uri.mechanism(), uri.cell());
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let segments = await cell.getSegments([uri.key()]);
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let segment = segments[0];
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return {
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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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});
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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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