mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-25 17:45:03 +03:00
Joey Parrish
94 lines
3.0 KiB
JavaScript
94 lines
3.0 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 a DASH video source.
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*/
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goog.provide('shaka.player.DashVideoSource');
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goog.require('shaka.dash.MpdProcessor');
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goog.require('shaka.dash.MpdRequest');
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goog.require('shaka.dash.mpd');
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goog.require('shaka.player.DrmSchemeInfo');
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goog.require('shaka.player.StreamVideoSource');
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goog.require('shaka.util.TypedBind');
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/**
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* Creates a DashVideoSource.
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* @param {string} mpdUrl The MPD URL.
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* @param {?shaka.player.DashVideoSource.ContentProtectionCallback}
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* interpretContentProtection A callback to interpret the ContentProtection
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* elements in the MPD.
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*
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* @struct
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* @constructor
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* @extends {shaka.player.StreamVideoSource}
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* @export
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*/
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shaka.player.DashVideoSource = function(mpdUrl, interpretContentProtection) {
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shaka.player.StreamVideoSource.call(this, null);
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/** @private {string} */
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this.mpdUrl_ = mpdUrl;
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/** @private {?shaka.player.DashVideoSource.ContentProtectionCallback} */
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this.interpretContentProtection_ = interpretContentProtection;
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};
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goog.inherits(shaka.player.DashVideoSource, shaka.player.StreamVideoSource);
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/**
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* A callback to the application to interpret DASH ContentProtection elements.
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* These elements can contain almost anything and can be highly application-
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* specific, so they cannot (in general) be interpreted by the library.
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*
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* The first parameter is the ContentProtection element.
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* The callback should return a DrmSchemeInfo object if the ContentProtection
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* element is understood by the application, or null otherwise.
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*
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* @typedef {function(!shaka.dash.mpd.ContentProtection):
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* shaka.player.DrmSchemeInfo}
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* @expose
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*/
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shaka.player.DashVideoSource.ContentProtectionCallback;
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/** @override */
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shaka.player.DashVideoSource.prototype.destroy = function() {
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this.interpretContentProtection_ = null;
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shaka.player.StreamVideoSource.prototype.destroy.call(this);
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};
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/** @override */
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shaka.player.DashVideoSource.prototype.load = function(preferredLanguage) {
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var mpdRequest = new shaka.dash.MpdRequest(this.mpdUrl_);
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return mpdRequest.send().then(shaka.util.TypedBind(this,
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/** @param {!shaka.dash.mpd.Mpd} mpd */
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function(mpd) {
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var mpdProcessor =
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new shaka.dash.MpdProcessor(this.interpretContentProtection_);
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mpdProcessor.process(mpd);
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this.manifestInfo = mpdProcessor.manifestInfo;
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var baseClassLoad = shaka.player.StreamVideoSource.prototype.load;
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return baseClassLoad.call(this, preferredLanguage);
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})
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);
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};
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