/**
* @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.SegmentInitSource');
goog.require('shaka.asserts');
goog.require('shaka.util.FailoverUri');
/**
* Creates a SegmentInitSource.
*
* @param {shaka.util.FailoverUri} metadata
* @param {ArrayBuffer=} opt_data
* @constructor
* @struct
*/
shaka.media.SegmentInitSource = function(metadata, opt_data) {
shaka.asserts.assert(!metadata || !opt_data);
/** @private {shaka.util.FailoverUri} */
this.metadata_ = metadata;
/** @private {ArrayBuffer} */
this.data_ = opt_data || null;
};
/**
* Destroys this SegmentInitSource.
*/
shaka.media.SegmentInitSource.prototype.destroy = function() {
if (this.metadata_) {
this.metadata_.abortFetch();
this.metadata_ = null;
}
this.data_ = null;
};
/**
* Creates the initialization data.
*
* @return {!Promise.<ArrayBuffer>}
*/
shaka.media.SegmentInitSource.prototype.create = function() {
return this.metadata_ ?
/** @type {!Promise.<ArrayBuffer>} */ (this.metadata_.fetch()) :
Promise.resolve(this.data_);
};