mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-25 17:45:03 +03:00
Natalie Harris
76 lines
2.3 KiB
JavaScript
76 lines
2.3 KiB
JavaScript
/**
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* Copyright 2014 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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* @fileoverview Implements an MPD request.
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*/
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goog.provide('shaka.dash.MpdRequest');
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goog.require('shaka.dash.mpd');
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goog.require('shaka.player.Defaults');
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goog.require('shaka.util.AjaxRequest');
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/**
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* Creates an MpdRequest.
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*
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* @param {string} url The URL.
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* @param {number=} opt_requestTimeout The timeout for a MpdRequest in seconds.
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*
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* @struct
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* @constructor
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* @extends {shaka.util.AjaxRequest}
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*/
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shaka.dash.MpdRequest = function(url, opt_requestTimeout) {
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shaka.util.AjaxRequest.call(this, url);
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this.parameters.responseType = 'text';
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this.parameters.maxAttempts = 3;
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var timeoutSeconds = opt_requestTimeout != null ?
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opt_requestTimeout : shaka.player.Defaults.MPD_REQUEST_TIMEOUT;
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this.parameters.requestTimeoutMs = timeoutSeconds * 1000;
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// The server delivering the DASH manifest is the only one that we should
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// be synchronizing our clock against, because the time parameters in the
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// DASH manifest are the only ones in this system which are sensitive to
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// getting out of sync. This is specifically true for live content.
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this.parameters.synchronizeClock = true;
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};
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goog.inherits(shaka.dash.MpdRequest, shaka.util.AjaxRequest);
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/**
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* Sends the MPD request.
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* @return {!Promise.<!shaka.dash.mpd.Mpd>}
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*/
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shaka.dash.MpdRequest.prototype.send = function() {
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var url = this.url;
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return this.sendInternal().then(
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/** @param {!XMLHttpRequest} xhr */
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function(xhr) {
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var mpd = shaka.dash.mpd.parseMpd(xhr.responseText, url);
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if (mpd) {
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return Promise.resolve(mpd);
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}
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var error = new Error('MPD parse failure.');
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error.type = 'mpd';
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return Promise.reject(error);
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}
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);
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};
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