/**
* @license
* Copyright 2015 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
goog.provide('shaka.media.ISegmentIndexSource');
goog.require('shaka.media.SegmentIndex');
/**
* A SegmentIndexSource creates a SegmentIndex from a source of metadata, e.g.,
* a container or a manifest.
*
* Constructing a SegmentIndex may require a fetch or may require some
* non-trivial computation, so constructing several SegmentIndexes before
* starting playback may not be desirable. A SegmentIndexSource allows
* lazy-loading a SegmentIndex.
*
* A SegmentIndexSource also separates how a SegmentIndex is constructed from
* how it behaves, which enables combining SegmentIndexSources and
* SegmentIndexes in various ways.
*
* @interface
*/
shaka.media.ISegmentIndexSource = function() {};
/**
* Destroys this SegmentIndexSource.
*/
shaka.media.ISegmentIndexSource.prototype.destroy = function() {};
/**
* Creates the SegmentIndex.
* The SegmentIndexSource retains ownership of the SegmentIndex.
*
* @return {!Promise.<!shaka.media.SegmentIndex>}
*/
shaka.media.ISegmentIndexSource.prototype.create = function() {};