mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Jacob Trimble
a0392286b2
This also fixes some bugs in the errors that were thrown from the offline code. Issue #1157 Change-Id: Ia0a0df458e764df5693ea3e6c1f38f91712e5280
128 lines
3.5 KiB
JavaScript
128 lines
3.5 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.OfflineManifestParser');
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goog.require('goog.asserts');
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goog.require('shaka.log');
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goog.require('shaka.media.ManifestParser');
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goog.require('shaka.offline.ManifestConverter');
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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.Error');
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/**
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* @summary Creates a new offline manifest parser.
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* @implements {shaka.extern.ManifestParser}
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*/
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shaka.offline.OfflineManifestParser = class {
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constructor() {
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/** @private {shaka.offline.OfflineUri} */
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this.uri_ = null;
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}
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/** @override */
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configure(config) {
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// No-op
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}
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/** @override */
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async start(uriString, playerInterface) {
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/** @type {shaka.offline.OfflineUri} */
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const uri = shaka.offline.OfflineUri.parse(uriString);
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this.uri_ = uri;
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if (uri == null || !uri.isManifest()) {
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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.NETWORK,
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shaka.util.Error.Code.MALFORMED_OFFLINE_URI,
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uriString);
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}
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/** @type {!shaka.offline.StorageMuxer} */
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const muxer = new shaka.offline.StorageMuxer();
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try {
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await muxer.init();
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const cell = await muxer.getCell(uri.mechanism(), uri.cell());
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const manifests = await cell.getManifests([uri.key()]);
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const manifest = manifests[0];
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const converter = new shaka.offline.ManifestConverter(
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uri.mechanism(), uri.cell());
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return converter.fromManifestDB(manifest);
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} finally {
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await muxer.destroy();
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}
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}
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/** @override */
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stop() {
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return Promise.resolve();
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}
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/** @override */
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update() {
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// No-op
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}
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/** @override */
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async onExpirationUpdated(sessionId, expiration) {
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goog.asserts.assert(
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this.uri_,
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'Should not get update event before start has been called');
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/** @type {!shaka.offline.OfflineUri} */
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const uri = this.uri_;
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/** @type {!shaka.offline.StorageMuxer} */
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const muxer = new shaka.offline.StorageMuxer();
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try {
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await muxer.init();
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const cell = await muxer.getCell(uri.mechanism(), uri.cell());
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const manifests = await cell.getManifests([uri.key()]);
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const manifest = manifests[0];
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const foundSession = manifest.sessionIds.includes(sessionId);
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const newExpiration = manifest.expiration == undefined ||
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manifest.expiration > expiration;
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if (foundSession && newExpiration) {
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shaka.log.debug('Updating expiration for stored content');
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await cell.updateManifestExpiration(uri.key(), expiration);
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}
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} catch (e) {
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// Ignore errors with update.
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shaka.log.error('There was an error updating', uri, e);
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} finally {
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await muxer.destroy();
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}
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}
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};
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shaka.media.ManifestParser.registerParserByMime(
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'application/x-offline-manifest', shaka.offline.OfflineManifestParser);
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