mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-14 15:56:38 +03:00
Joey Parrish
4cc4e96dbd
* Updates all Copyright years to 2015. * Adds licenses annotations to all JS. * Makes all licenses identical to avoid repeated appearance in the compiled output. * Drops fileoverview annotations, which do not affect docs output. * The linter still requires fileoverview on externs. This patch required a newer closure compiler, since the previous version we used had a bug regarding license annotations that caused the license comment block to appear in the output once per file regardless of uniqueness. Change-Id: I2e9272db680cba7ecc4613d97f1d3a94ac2244cc
119 lines
3.7 KiB
JavaScript
119 lines
3.7 KiB
JavaScript
/**
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* @license
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* Copyright 2015 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.util.ContentDatabaseReader');
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goog.require('shaka.util.ArrayUtils');
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goog.require('shaka.util.ContentDatabase');
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goog.require('shaka.util.PublicPromise');
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goog.require('shaka.util.TypedBind');
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/**
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* Creates a new ContentDatabaseReader.
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*
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* @constructor
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* @struct
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* @extends {shaka.util.ContentDatabase}
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*/
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shaka.util.ContentDatabaseReader = function() {
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shaka.util.ContentDatabase.call(this, 'readonly', null);
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};
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goog.inherits(shaka.util.ContentDatabaseReader, shaka.util.ContentDatabase);
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/**
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* Retrieves an array of all stored group IDs.
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* @return {!Promise.<!Array.<number>>} The unique IDs of all of the
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* stored groups.
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*/
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shaka.util.ContentDatabaseReader.prototype.retrieveGroupIds = function() {
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var p = new shaka.util.PublicPromise();
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var groupIds = [];
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var request = this.getGroupStore().openCursor();
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request.onerror = function(e) { p.reject(request.error); };
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request.onsuccess = function(e) {
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var cursor = e.target.result;
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if (cursor) {
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groupIds.push(cursor.key);
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cursor.continue();
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} else {
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p.resolve(groupIds);
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}
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};
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return p;
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};
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/**
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* Retrieves the group for a stream from the database.
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* @param {number} groupId The unique id of the group.
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* @return {!Promise.<shaka.util.ContentDatabase.GroupInformation>} The unique
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* ids of the streams the group.
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*/
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shaka.util.ContentDatabaseReader.prototype.retrieveGroup = function(groupId) {
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var p = this.retrieveItem(this.getGroupStore(), groupId);
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return p.then(shaka.util.TypedBind(this,
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/** @param {shaka.util.ContentDatabase.GroupInformation} groupInfo */
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function(groupInfo) {
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groupInfo['session_ids'] =
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shaka.util.ArrayUtils.removeDuplicates(groupInfo['session_ids']);
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if (!groupInfo.hasOwnProperty('duration') &&
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!groupInfo.hasOwnProperty('key_system')) {
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return this.retrieveStreamIndex(groupInfo['stream_ids'][0]).then(
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function(index) {
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groupInfo['duration'] = index['duration'];
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groupInfo['key_system'] = index['key_system'];
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return Promise.resolve(groupInfo);
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});
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} else {
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return Promise.resolve(groupInfo);
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}
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}));
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};
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/**
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* Retrieves the index for a stream from the database.
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* @param {number} streamId The unique id of the stream.
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* @return {!Promise.<shaka.util.ContentDatabase.StreamIndex>}
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*/
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shaka.util.ContentDatabaseReader.prototype.retrieveStreamIndex = function(
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streamId) {
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return this.retrieveItem(this.getIndexStore(), streamId);
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};
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/**
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* Retrieves the segment with |segmentId| from the stream with |streamId| in
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* the database.
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* @param {number} streamId The unique id of the stream to retrieve.
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* @param {number} segmentId The id of the segment to retrieve.
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* @return {!Promise.<ArrayBuffer>}
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*/
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shaka.util.ContentDatabaseReader.prototype.retrieveSegment = function(
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streamId, segmentId) {
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var p = this.retrieveItem(
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this.getContentStore().index('segment'), [streamId, segmentId]);
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return p.then(function(data) { return Promise.resolve(data.content); });
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};
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