axthima.js

/* DASH Playback Technology - Wrapper for Axthima DASHP2P API
================================================================================ */

//_V_.options.techOrder.push("axthima");

_V_.axthima = _V_.PlaybackTech.extend({

  init: function(player, options){
    this.player = player;
	this.options = options;
    this.el = this.createElement();
	
	this.addEvent("click", this.proxy(this.onClick));
	
	console.log("axthimaTech!");
	
	this.event_handlers = { onMetaData : _V_.axthima.onMetaData.bind(this),
							   onBuffering : _V_.axthima.onBuffering.bind(this),
							   onFinish : _V_.axthima.onFinish.bind(this)
							 };
	
	
	require([this.player.options.DASHR_API], _V_.axthima.onReady.bind(this) );
	
	this.player.ready(_V_.axthima.CheckAutoplay.bind(this));
	
	this.setupTriggers();
  },
  
  
  
   setupTriggers: function(){
    _V_.each.call(this, _V_.axthima.events, function(type){
      _V_.addEvent(this.el, type, _V_.proxy(this.player, this.eventHandler));
    });
  },
  removeTriggers: function(){
    _V_.each.call(this, _V_.axthima.events, function(type){
      _V_.removeEvent(this.el, type, _V_.proxy(this.player, this.eventHandler));
    });
  },
  eventHandler: function(e){
    e.stopPropagation();
    this.triggerEvent(e);
  },

  destroy: function(){
    this.player.tag = false;
	//this.aDash.Stop();
    this.el.parentNode.removeChild(this.el);
  },

  createElement: function(){
    var axthima = _V_.axthima,
        player = this.player,

        // If possible, reuse original tag for HTML5 playback technology element
        el = player.tag,
        newEl;

    // Check if this browser supports moving the element into the box.
    // On the iPhone video will break if you move the element,
    // So we have to create a brand new element.
    if (!el || this.support.movingElementInDOM === false) {

      // If the original tag is still there, remove it.
      if (el) {
        player.el.removeChild(el);
      }

      newEl = _V_.createElement("video", {
        id: el.id || player.el.id + "_dashr_api",
        className: el.className || "vjs-tech"
      });

      el = newEl;
      _V_.insertFirst(el, player.el);
    }

    // Update tag settings, in case they were overridden
    _V_.each(["autoplay","preload","loop","muted"], function(attr){ // ,"poster"
      if (player.options[attr] !== null) {
        el[attr] = player.options[attr];
      }
    }, this);

    return el;
  },

  play: function(){ this.aDash.play(); this.player.triggerEvent('play'); },
  pause: function(){ if(!this.el.seeking) { this.aDash.pause(); this.player.triggerEvent('pause'); } ; },
  paused: function(){ return this.aDash.paused(); }, //ne pas pauser si on est en train de seeker

  currentTime: function(){ return this.el.currentTime; },
  setCurrentTime: function(seconds){
    this.aDash.seek(seconds);
  },

  duration: function(){ return this.el.duration; },
  buffered: function(){ 
  var r= this.aDash.getBuffered(); 
  //video-js doesn't handle buffer ranges with multiranges
  var max_time = this.getMaxTime(r);
  return _V_.createTimeRange(0,max_time);
   },

   getMaxTime: function(buf){
    for(var i=0; i<buf.buffered.length; i++)
    {
      if(buf.start(i)<=this.currentTime() && this.currentTime()<=buf.end(i))
      {
        return buf.end(i);
      }
    }
    return this.currentTime();
   },

  volume: function(){ return this.el.volume; },
  setVolume: function(percentAsDecimal){ this.el.volume = percentAsDecimal; },
  muted: function(){ return this.el.muted; },
  setMuted: function(muted){ this.el.muted = muted; },

  width: function(){ return this.el.offsetWidth; },
  height: function(){ return this.el.offsetHeight; },

  supportsFullScreen: function(){
    if (typeof this.el.webkitEnterFullScreen == 'function') {

      // Seems to be broken in Chromium/Chrome && Safari in Leopard
      if (!navigator.userAgent.match("Chrome") && !navigator.userAgent.match("Mac OS X 10.5")) {
        return true;
      }
    }
    return false;
  },

  enterFullScreen: function(){
      try {
        this.el.webkitEnterFullScreen();
      } catch (e) {
        if (e.code == 11) {
          // this.warning(VideoJS.warnings.videoNotReady);
          _V_.log("VideoJS: Video not ready.");
        }
      }
  },
  exitFullScreen: function(){
      try {
        this.el.webkitExitFullScreen();
      } catch (e) {
        if (e.code == 11) {
          // this.warning(VideoJS.warnings.videoNotReady);
          _V_.log("VideoJS: Video not ready.");
        }
      }
  },
  src: function(src){ this.el.src = src; },
  load: function(){ this.el.load(); },
  currentSrc: function(){ return this.el.currentSrc; },

  preload: function(){ return this.el.preload; },
  setPreload: function(val){ this.el.preload = val; },
  autoplay: function(){ return this.el.autoplay; },
  setAutoplay: function(val){ this.el.autoplay = val; },
  loop: function(){ return this.el.loop; },
  setLoop: function(val){ this.el.loop = val; },

  error: function(){ return this.el.error; },
  // networkState: function(){ return this.el.networkState; },
  // readyState: function(){ return this.el.readyState; },
  seeking: function(){ return this.el.seeking; },
  // initialTime: function(){ return this.el.initialTime; },
  // startOffsetTime: function(){ return this.el.startOffsetTime; },
  // played: function(){ return this.el.played; },
  // seekable: function(){ return this.el.seekable; },
  ended: function(){ return this.el.ended; },
  // videoTracks: function(){ return this.el.videoTracks; },
  // audioTracks: function(){ return this.el.audioTracks; },
  // videoWidth: function(){ return this.el.videoWidth; },
  // videoHeight: function(){ return this.el.videoHeight; },
  // textTracks: function(){ return this.el.textTracks; },
  // defaultPlaybackRate: function(){ return this.el.defaultPlaybackRate; },
  // playbackRate: function(){ return this.el.playbackRate; },
  // mediaGroup: function(){ return this.el.mediaGroup; },
  // controller: function(){ return this.el.controller; },
  controls: function(){ return this.player.options.controls; },
  defaultMuted: function(){ return this.el.defaultMuted; }
});

/* AxthimaDash Support Testing -------------------------------------------------------- */

_V_.axthima.isSupported = function(){
  // test de media source plutot je pense
  return !!(window.MediaSource || window.WebKitMediaSource || window.webkitMediaSource);
};

_V_.axthima.canPlaySource = function(srcObj){
  return srcObj.type == "video/dash";
  // TODO: Check Type
  // If no Type, check ext
  // Check Media Type
};

// List of all HTML5 events (various uses).
_V_.axthima.events = "loadstart,suspend,abort,error,emptied,stalled,loadedmetadata,playing,waiting,seeking,seeked,ended,durationchange,timeupdate,progress,ratechange,volumechange".split(","); // tous sauf play et pause pour pouvoir controler les etat reels de lecture/buffering.

/* HTML5 Device Fixes ---------------------------------------------------------- */

_V_.axthima.prototype.support = {

  // Support for tech specific full screen. (webkitEnterFullScreen, not requestFullscreen)
  // http://developer.apple.com/library/safari/#documentation/AudioVideo/Reference/HTMLVideoElementClassReference/HTMLVideoElement/HTMLVideoElement.html
  // Seems to be broken in Chromium/Chrome && Safari in Leopard
  fullscreen: (typeof _V_.testVid.webkitEnterFullScreen !== undefined) ? (!_V_.ua.match("Chrome") && !_V_.ua.match("Mac OS X 10.5") ? true : false) : false,

  // In iOS, if you move a video element in the DOM, it breaks video playback.
  movingElementInDOM: !_V_.isIOS(),
  formats: {
    "video/dash": "MPD"
  }

};

// Android
if (_V_.isAndroid()) {

  // Override Android 2.2 and less canPlayType method which is broken
  if (_V_.androidVersion() < 3) {
    document.createElement("video").constructor.prototype.canPlayType = function(type){
      return (type && type.toLowerCase().indexOf("video/mp4") != -1) ? "maybe" : "";
    };
  }
}


// Event callbacks ------------------------------------------------------------
_V_.axthima.CheckAutoplay = function ()
{
	if (this.el.autoplay && this.paused())  //histoire de bug
  {
	this.el.poster = null; // Chrome Fix. Fixed in Chrome v16.
	this.play();
  }
}

_V_.axthima.onReady = function(api) {
  console.log('DASH Module Loaded');  
  this.aDash = new api(this.el,this.options.source.src,this.event_handlers,this.player.options.preselected_tracks);
  
  this.player.tech.triggerReady();
  this.player.triggerReady();
  
  
  
  this.player.triggerEvent("canplay");
  
};

_V_.axthima.onMetaData = function(tracksList)
{
	console.log('onMetaDataReceived');
	console.log(tracksList);
	var audiotracksinfos = new Array();
	var videotracksinfos = new Array();
	for(var i=0;i<tracksList.length;i++)
	{
		if(tracksList[i].type == 'audio')
		{
			audiotracksinfos.push(tracksList[i]);
		}
		else if(tracksList[i].type =='video')
		{
			videotracksinfos.push(tracksList[i]);
		}
	}
	if(audiotracksinfos.length)
	{
		this.player.controlBar.addComponent("audioButton", audiotracksinfos);
	}
	if(videotracksinfos.length)
	{
		this.player.controlBar.addComponent("videoButton", videotracksinfos);
	}
}

_V_.axthima.onBuffering = function() {
  this.player.triggerEvent("waiting");
};

_V_.axthima.onFinish = function() {
  this.player.triggerEvent("ended");
  this.pause();
  this.setCurrentTime(0);
};



/* Text Track Menu Items
================================================================================ */
_V_.AlternativeTrackeMenuItem = _V_.MenuItem.extend({

  init: function(player, options,parent){
    // Modify options for parent MenuItem class's init.
	
	this.parentMenu = parent;
	if(!options.auto)
	{
    
    	options.label = (options.lang) ? '['+options.lang+'] '+ Math.floor((options.bandwidth/1024)) + 'kbps' : Math.floor(options.bandwidth/1024) + 'kbps';
	}
	else 
	{
		options.label = (options.lang) ? '['+options.lang+'] ' + "Auto" : 'Auto';
		options.id_rep = -1;
	}
	this.track = options;
    options.selected = options.selected | false;
    this._super(player, options);
	
  },

  onClick: function(){
    this._super();
	for (var i=0; i< this.parentMenu.items.length; i++)
	{
		if(this !== this.parentMenu.items[i])
		{
				this.parentMenu.items[i].selected(false);
		}
	}
	this.player.tech.aDash.switchRepresentation(this.track.type, this.track.id_aset, this.track.id_rep);
  }

});

/* Captions Button
================================================================================ */
_V_.AlternativeTrackButton = _V_.Button.extend({

  init: function(player, options){
    this._super(player, options);

	this.options = options;
	this.player = player;
	
    this.menu = this.createMenu();
	
/*
    if (this.items.length === 0) {
      this.hide();
    } */
  },

  createMenu: function(){
	
    var menu = new _V_.Menu(this.player);

    // Add a title list item to the top
    menu.el.appendChild(_V_.createElement("li", {
      className: "vjs-menu-title",
      innerHTML: _V_.uc(this.kind)
    }));
	
	this.items = new Array();
    
	for(var i=0; i<this.options.length; i++)
	{
		if(this.options[i].auto)
		{
			var m = new _V_.AlternativeTrackeMenuItem(this.player, {type : this.options[i].type, lang:this.options[i].lang,  id_aset :this.options[i].id_aset, auto:true, selected : this.options[i].selected},this);
		}
		else 
		{
			var id_aset = this.options[i].id_aset;
			var bw = this.options[i].bandwidth
			var id_rep = this.options[i].id_rep;
			var selected = this.options[i].selected | false;
      if(this.options[i].lang)
      {
        var tracklang = this.options[i].lang;
      }
			var m = new _V_.AlternativeTrackeMenuItem(this.player, {type : this.options[i].type, lang : tracklang, id_aset:id_aset, id_rep : id_rep, bandwidth : bw, selected : selected},this);
		}
		this.items.push(m);
		menu.addItem(m);
		
	}

    // Add list to element
    this.addComponent(menu);

    return menu;
  },

  buildCSSClass: function(){
    return this.className + " vjs-menu-button " + this._super();
  },

  // Focus - Add keyboard functionality to element
  onFocus: function(){
    // Show the menu, and keep showing when the menu items are in focus
    this.menu.lockShowing();
    // this.menu.el.style.display = "block";

    // When tabbing through, the menu should hide when focus goes from the last menu item to the next tabbed element.
    _V_.one(this.menu.el.childNodes[this.menu.el.childNodes.length - 1], "blur", this.proxy(function(){
      this.menu.unlockShowing();
    }));
  },
  // Can't turn off list display that we turned on with focus, because list would go away.
  onBlur: function(){},

  onClick: function(){
    // When you click the button it adds focus, which will show the menu indefinitely.
    // So we'll remove focus when the mouse leaves the button.
    // Focus is needed for tab navigation.
    this.one("mouseout", this.proxy(function(){
      this.menu.unlockShowing();
      this.el.blur();
    }));
  }

});

_V_.AudioButton = _V_.AlternativeTrackButton.extend({
  kind: "audio",
  buttonText: "Audio Tracks",
  className: "vjs-dashr-audiotracks-button"
});

_V_.VideoButton = _V_.AlternativeTrackButton.extend({
  kind: "video",
  buttonText: "Video Tracks",
  className: "vjs-dashr-videotracks-button"
});

// Add Buttons to controlBar
/*_V_.merge(_V_.ControlBar.prototype.options.components, {
  "audioButton": {},
  "videoButton": {}
});*/



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