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(function() {
if ( /CrKey\/[0-9]+\.[0-9a-z]+\.[0-9a-z]+/i.exec( navigator.userAgent ) ) {
var castscript = document.createElement('script');
castscript.type = 'text/javascript';
castscript.src = 'https://www.gstatic.com/cast/sdk/libs/receiver/2.0.0/cast_receiver.js'
document.head.appendChild( castscript );
var _requestMediaKeySystemAccess = navigator.requestMediaKeySystemAccess.bind( navigator ),
_setMediaKeys = HTMLMediaElement.prototype.setMediaKeys,
_load = MediaKeySession.prototype.load;
MediaKeySession.prototype.load = function load()
{
return _load.call( this ).then( function( success )
{
return success ? this.remove() : false;
}.bind( this ) );
};
function MediaKeys( mediaKeys )
{
this._mediaKeys = mediaKeys;
}
MediaKeys.prototype.setServerCertificate = function setServerCertificate( certificate )
{
return this._mediaKeys.setServerCertificate( certificate );
};
MediaKeys.prototype.createSession = function createSession( sessionType ) {
if ( sessionType === 'persistent-usage-record' )
{
return cast.receiver.eme.KeySession.createSession( this._mediaKeys, 'persistent-release-message' );
}
return this._mediaKeys.createSession( sessionType );
};
function MediaKeySystemAccess( access )
{
this._access = mediaKeySystemAccess;
}
Object.defineProperty( MediaKeySystemAccess.prototype, 'keySystem', { get: function() { return this._access.keySystem; } } );
MediaKeySystemAccess.prototype.getConfiguration = function getConfiguration() { return this._access.getConfiguration(); };
MediaKeySystemAccess.prototype.createMediaKeys = function createMediaKeys() {
return this._access.createMediaKey().then( function( mediaKeys ) { return new MediaKeys( mediaKeys ); } );
};
HTMLMediaElement.prototype.setMediaKeys = function setMediaKeys( mediaKeys )
{
if ( mediaKeys instanceof MediaKeys )
{
return _setMediaKeys.call( this, mediaKeys._mediaKeys );
}
else
{
return _setMediaKeys.call( this, mediaKeys );
}
};
navigator.requestMediaKeySystemAccess = function requestMediaKeySystemAccess( keysystem, supportedConfigurations ) {
if ( keysystem !== 'com.chromecast.playready' )
{
return _requestMediaKeySystemAccess( keysystem, supportedConfigurations );
}
return _requestMediaKeySystemAccess( keysystem, supportedConfigurations )
.then( function( access ) { return new MediaKeySystemAccess( access ); } );
};
}
})();
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