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( function( mw, $ ) { "use strict";
var support = mw.OgvJsSupport;
mw.EmbedPlayerOgvJs = {
// Instance name:
instanceOf: 'OgvJs',
// Supported feature set of the OGVPlayer widget:
supports: {
'playHead' : true,
'pause' : true,
'stop' : true,
'fullscreen' : true,
'sourceSwitch': true,
'timeDisplay' : true,
'volumeControl' : false,
'overlays': true,
'timedText': true
},
/**
* Perform setup in response to a play start command.
* This means loading the code asynchronously if needed,
* and enabling web audio for iOS Safari inside the event
* handler.
*
* @return jQuery.Deferred
*/
_ogvJsPreInit: function() {
if( mw.isIOS() ) {
this._initializeAudioForiOS();
}
return support.loadOgvJs();
},
/**
* Actually initialize the player.
*
* @return OGVPlayer
*/
_ogvJsInit: function() {
var options = {};
if ( this._iOSAudioContext ) {
// Reuse the audio context we opened earlier
options.audioContext = this._iOSAudioContext;
}
return new OGVPlayer( options );
},
_iOSAudioContext: undefined,
_initializeAudioForiOS: function() {
// iOS Safari Web Audio API must be initialized from an input event handler
if ( this._iOSAudioContext ) {
return;
}
this._iOSAudioContext = support.initAudioContext();
},
/**
* Output the the embed html
*/
embedPlayerHTML: function (optionalCallback) {
$( this )
.empty()
.append( $.createSpinner( {
size: 'large',
type: 'block'
} ) );
var _this = this;
if( mw.isIOS() ) {
_this._initializeAudioForiOS();
}
support.loadOgvJs().done( function() {
var player = _this._ogvJsInit();
player.id = _this.pid;
player.style.width = '100%';
player.style.height = '100%';
player.src = _this.getSrc();
if ( _this.getDuration() ) {
player.durationHint = parseFloat( _this.getDuration() );
}
player.addEventListener('ended', function() {
_this.onClipDone();
});
// simulate timeupdate events, needed for subtitles
// @todo switch this to native timeupdate event when available upstream
var lastTime = 0,
timeupdateInterval = 0.25;
player.addEventListener( 'framecallback', function( event ) {
var player = _this.getPlayerElement(),
now = player ? player.currentTime : lastTime;
// Don't spam time updates on every frame
if ( Math.abs( now - lastTime ) >= timeupdateInterval ) {
lastTime = now;
$( _this ).trigger( 'timeupdate', [event, _this.id] );
}
});
$( _this ).empty().append( player );
player.play();
// Start the monitor:
_this.monitor();
if ( optionalCallback ) {
optionalCallback();
}
});
},
/**
* Get the embed player time
*/
getPlayerElementTime: function() {
this.getPlayerElement();
var currentTime = 0;
if ( this.playerElement ) {
currentTime = this.playerElement.currentTime;
} else {
mw.log( "EmbedPlayerOgvJs:: Could not find playerElement" );
}
return currentTime;
},
/**
* Update the playerElement instance with a pointer to the embed object
*/
getPlayerElement: function() {
// this.pid is in the form 'pid_mwe_player_<number>'; inherited from mw.EmbedPlayer.js
var $el = $( '#' + this.pid );
if( !$el.length ) {
return false;
}
this.playerElement = $el.get( 0 );
return this.playerElement;
},
/**
* Issue the doPlay request to the playerElement
* calls parent_play to update interface
*/
play: function() {
this.getPlayerElement();
this.parent_play();
if ( this.playerElement ) {
this.playerElement.play();
// Restart the monitor if on second playthrough
this.monitor();
}
},
/**
* Pause playback
* calls parent_pause to update interface
*/
pause: function() {
this.getPlayerElement();
// Update the interface
this.parent_pause();
// Call the pause function if it exists:
if ( this.playerElement ) {
this.playerElement.pause();
}
},
/**
* Switch the source!
* For simplicity we just replace the player here.
*/
playerSwitchSource: function( source, switchCallback, doneCallback ){
var _this = this;
var src = source.getSrc();
var vid = this.getPlayerElement();
if ( typeof vid.stop !== 'undefined' ) {
vid.stop();
}
switchCallback();
// Currently have to tear down the player and make a new one
this.embedPlayerHTML( doneCallback );
},
/**
* Seek in the ogg stream
* @param {Float} percentage Percentage to seek into the stream
*/
seek: function( percentage ) {
this.setCurrentTime( percentage * parseFloat( this.getDuration() ) );
},
setCurrentTime: function( time, callback ) {
this.getPlayerElement();
if ( this.playerElement ) {
this.playerElement.currentTime = time;
}
this.currentTime = time;
this.previousTime = time; // prevent weird double-seek. MwEmbedPlyer is weird!
// Run the onSeeking interface update
this.controlBuilder.onSeek();
// @todo add proper events upstream
if( this.seeking ){
this.seeking = false;
$( this ).trigger( 'seeked' );
}
if ( $.isFunction( callback ) ) {
callback();
}
}
};
} )( mediaWiki, jQuery );
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