//##############################################################################
// version.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
/**
* Static class holding library specific information such as the version and buildDate of the library.
* The SoundJS class has been renamed {{#crossLink "Sound"}}{{/crossLink}}. Please see {{#crossLink "Sound"}}{{/crossLink}}
* for information on using sound.
* @class SoundJS
**/
var s = createjs.SoundJS = createjs.SoundJS || {};
/**
* The version string for this release.
* @property version
* @type String
* @static
**/
s.version = /*=version*/""; // injected by build process
/**
* The build date for this release in UTC format.
* @property buildDate
* @type String
* @static
**/
s.buildDate = /*=date*/""; // injected by build process
})();
//##############################################################################
// extend.js
//##############################################################################
this.createjs = this.createjs||{};
/**
* @class Utility Methods
*/
/**
* Sets up the prototype chain and constructor property for a new class.
*
* This should be called right after creating the class constructor.
*
* function MySubClass() {}
* createjs.extend(MySubClass, MySuperClass);
* ClassB.prototype.doSomething = function() { }
*
* var foo = new MySubClass();
* console.log(foo instanceof MySuperClass); // true
* console.log(foo.prototype.constructor === MySubClass); // true
*
* @method extends
* @param {Function} subclass The subclass.
* @param {Function} superclass The superclass to extend.
* @return {Function} Returns the subclass's new prototype.
*/
createjs.extend = function(subclass, superclass) {
"use strict";
function o() { this.constructor = subclass; }
o.prototype = superclass.prototype;
return (subclass.prototype = new o());
};
//##############################################################################
// promote.js
//##############################################################################
this.createjs = this.createjs||{};
/**
* @class Utility Methods
*/
/**
* Promotes any methods on the super class that were overridden, by creating an alias in the format `prefix_methodName`.
* It is recommended to use the super class's name as the prefix.
* An alias to the super class's constructor is always added in the format `prefix_constructor`.
* This allows the subclass to call super class methods without using `function.call`, providing better performance.
*
* For example, if `MySubClass` extends `MySuperClass`, and both define a `draw` method, then calling `promote(MySubClass, "MySuperClass")`
* would add a `MySuperClass_constructor` method to MySubClass and promote the `draw` method on `MySuperClass` to the
* prototype of `MySubClass` as `MySuperClass_draw`.
*
* This should be called after the class's prototype is fully defined.
*
* function ClassA(name) {
* this.name = name;
* }
* ClassA.prototype.greet = function() {
* return "Hello "+this.name;
* }
*
* function ClassB(name, punctuation) {
* this.ClassA_constructor(name);
* this.punctuation = punctuation;
* }
* createjs.extend(ClassB, ClassA);
* ClassB.prototype.greet = function() {
* return this.ClassA_greet()+this.punctuation;
* }
* createjs.promote(ClassB, "ClassA");
*
* var foo = new ClassB("World", "!?!");
* console.log(foo.greet()); // Hello World!?!
*
* @method promote
* @param {Function} subclass The class to promote super class methods on.
* @param {String} prefix The prefix to add to the promoted method names. Usually the name of the superclass.
* @return {Function} Returns the subclass.
*/
createjs.promote = function(subclass, prefix) {
"use strict";
var subP = subclass.prototype, supP = (Object.getPrototypeOf&&Object.getPrototypeOf(subP))||subP.__proto__;
if (supP) {
subP[(prefix+="_") + "constructor"] = supP.constructor; // constructor is not always innumerable
for (var n in supP) {
if (subP.hasOwnProperty(n) && (typeof supP[n] == "function")) { subP[prefix + n] = supP[n]; }
}
}
return subclass;
};
//##############################################################################
// IndexOf.js
//##############################################################################
this.createjs = this.createjs||{};
/**
* @class Utility Methods
*/
/**
* Finds the first occurrence of a specified value searchElement in the passed in array, and returns the index of
* that value. Returns -1 if value is not found.
*
* var i = createjs.indexOf(myArray, myElementToFind);
*
* @method indexOf
* @param {Array} array Array to search for searchElement
* @param searchElement Element to find in array.
* @return {Number} The first index of searchElement in array.
*/
createjs.indexOf = function (array, searchElement){
"use strict";
for (var i = 0,l=array.length; i < l; i++) {
if (searchElement === array[i]) {
return i;
}
}
return -1;
};
//##############################################################################
// Proxy.js
//##############################################################################
this.createjs = this.createjs||{};
/**
* Various utilities that the CreateJS Suite uses. Utilities are created as separate files, and will be available on the
* createjs namespace directly.
*
* Example
*
* myObject.addEventListener("change", createjs.proxy(myMethod, scope));
*
* @class Utility Methods
* @main Utility Methods
*/
(function() {
"use strict";
/**
* A function proxy for methods. By default, JavaScript methods do not maintain scope, so passing a method as a
* callback will result in the method getting called in the scope of the caller. Using a proxy ensures that the
* method gets called in the correct scope.
*
* Additional arguments can be passed that will be applied to the function when it is called.
*
* Example
*
* myObject.addEventListener("event", createjs.proxy(myHandler, this, arg1, arg2));
*
* function myHandler(arg1, arg2) {
* // This gets called when myObject.myCallback is executed.
* }
*
* @method proxy
* @param {Function} method The function to call
* @param {Object} scope The scope to call the method name on
* @param {mixed} [arg] * Arguments that are appended to the callback for additional params.
* @public
* @static
*/
createjs.proxy = function (method, scope) {
var aArgs = Array.prototype.slice.call(arguments, 2);
return function () {
return method.apply(scope, Array.prototype.slice.call(arguments, 0).concat(aArgs));
};
}
}());
//##############################################################################
// definePropertySupported.js
//##############################################################################
this.createjs = this.createjs||{};
/**
* @class Utility Methods
*/
(function() {
"use strict";
/**
* Boolean value indicating if Object.defineProperty is supported.
*
* Example
*
* if (createjs.definePropertySupported) { // add getter / setter}
*
* @property definePropertySupported
* @type {Boolean}
* @default true
*/
var t = Object.defineProperty ? true : false;
// IE8 has Object.defineProperty, but only for DOM objects, so check if fails to suppress errors
var foo = {};
try {
Object.defineProperty(foo, "bar", {
get: function () {
return this._bar;
},
set: function (value) {
this._bar = value;
}
});
} catch (e) {
t = false;
}
createjs.definePropertySupported = t;
}());
//##############################################################################
// BrowserDetect.js
//##############################################################################
this.createjs = this.createjs||{};
/**
* @class Utility Methods
*/
(function() {
"use strict";
/**
* An object that determines the current browser, version, operating system, and other environment
* variables via user agent string.
*
* Used for audio because feature detection is unable to detect the many limitations of mobile devices.
*
* Example
*
* if (createjs.BrowserDetect.isIOS) { // do stuff }
*
* @property BrowserDetect
* @type {Object}
* @param {Boolean} isFirefox True if our browser is Firefox.
* @param {Boolean} isOpera True if our browser is opera.
* @param {Boolean} isChrome True if our browser is Chrome. Note that Chrome for Android returns true, but is a
* completely different browser with different abilities.
* @param {Boolean} isIOS True if our browser is safari for iOS devices (iPad, iPhone, and iPod).
* @param {Boolean} isAndroid True if our browser is Android.
* @param {Boolean} isBlackberry True if our browser is Blackberry.
* @constructor
* @static
*/
function BrowserDetect() {
throw "BrowserDetect cannot be instantiated";
};
var agent = BrowserDetect.agent = window.navigator.userAgent;
BrowserDetect.isWindowPhone = (agent.indexOf("IEMobile") > -1) || (agent.indexOf("Windows Phone") > -1);
BrowserDetect.isFirefox = (agent.indexOf("Firefox") > -1);
BrowserDetect.isOpera = (window.opera != null);
BrowserDetect.isChrome = (agent.indexOf("Chrome") > -1); // NOTE that Chrome on Android returns true but is a completely different browser with different abilities
BrowserDetect.isIOS = (agent.indexOf("iPod") > -1 || agent.indexOf("iPhone") > -1 || agent.indexOf("iPad") > -1) && !BrowserDetect.isWindowPhone;
BrowserDetect.isAndroid = (agent.indexOf("Android") > -1) && !BrowserDetect.isWindowPhone;
BrowserDetect.isBlackberry = (agent.indexOf("Blackberry") > -1);
createjs.BrowserDetect = BrowserDetect;
}());
//##############################################################################
// EventDispatcher.js
//##############################################################################
this.createjs = this.createjs||{};
(function() {
"use strict";
// constructor:
/**
* EventDispatcher provides methods for managing queues of event listeners and dispatching events.
*
* You can either extend EventDispatcher or mix its methods into an existing prototype or instance by using the
* EventDispatcher {{#crossLink "EventDispatcher/initialize"}}{{/crossLink}} method.
*
* Together with the CreateJS Event class, EventDispatcher provides an extended event model that is based on the
* DOM Level 2 event model, including addEventListener, removeEventListener, and dispatchEvent. It supports
* bubbling / capture, preventDefault, stopPropagation, stopImmediatePropagation, and handleEvent.
*
* EventDispatcher also exposes a {{#crossLink "EventDispatcher/on"}}{{/crossLink}} method, which makes it easier
* to create scoped listeners, listeners that only run once, and listeners with associated arbitrary data. The
* {{#crossLink "EventDispatcher/off"}}{{/crossLink}} method is merely an alias to
* {{#crossLink "EventDispatcher/removeEventListener"}}{{/crossLink}}.
*
* Another addition to the DOM Level 2 model is the {{#crossLink "EventDispatcher/removeAllEventListeners"}}{{/crossLink}}
* method, which can be used to listeners for all events, or listeners for a specific event. The Event object also
* includes a {{#crossLink "Event/remove"}}{{/crossLink}} method which removes the active listener.
*
* Example
* Add EventDispatcher capabilities to the "MyClass" class.
*
* EventDispatcher.initialize(MyClass.prototype);
*
* Add an event (see {{#crossLink "EventDispatcher/addEventListener"}}{{/crossLink}}).
*
* instance.addEventListener("eventName", handlerMethod);
* function handlerMethod(event) {
* console.log(event.target + " Was Clicked");
* }
*
* Maintaining proper scope
* Scope (ie. "this") can be be a challenge with events. Using the {{#crossLink "EventDispatcher/on"}}{{/crossLink}}
* method to subscribe to events simplifies this.
*
* instance.addEventListener("click", function(event) {
* console.log(instance == this); // false, scope is ambiguous.
* });
*
* instance.on("click", function(event) {
* console.log(instance == this); // true, "on" uses dispatcher scope by default.
* });
*
* If you want to use addEventListener instead, you may want to use function.bind() or a similar proxy to manage scope.
*
*
* @class EventDispatcher
* @constructor
**/
function EventDispatcher() {
// private properties:
/**
* @protected
* @property _listeners
* @type Object
**/
this._listeners = null;
/**
* @protected
* @property _captureListeners
* @type Object
**/
this._captureListeners = null;
}
var p = EventDispatcher.prototype;
// static public methods:
/**
* Static initializer to mix EventDispatcher methods into a target object or prototype.
*
* EventDispatcher.initialize(MyClass.prototype); // add to the prototype of the class
* EventDispatcher.initialize(myObject); // add to a specific instance
*
* @method initialize
* @static
* @param {Object} target The target object to inject EventDispatcher methods into. This can be an instance or a
* prototype.
**/
EventDispatcher.initialize = function(target) {
target.addEventListener = p.addEventListener;
target.on = p.on;
target.removeEventListener = target.off = p.removeEventListener;
target.removeAllEventListeners = p.removeAllEventListeners;
target.hasEventListener = p.hasEventListener;
target.dispatchEvent = p.dispatchEvent;
target._dispatchEvent = p._dispatchEvent;
target.willTrigger = p.willTrigger;
};
// public methods:
/**
* Adds the specified event listener. Note that adding multiple listeners to the same function will result in
* multiple callbacks getting fired.
*
* Example
*
* displayObject.addEventListener("click", handleClick);
* function handleClick(event) {
* // Click happened.
* }
*
* @method addEventListener
* @param {String} type The string type of the event.
* @param {Function | Object} listener An object with a handleEvent method, or a function that will be called when
* the event is dispatched.
* @param {Boolean} [useCapture] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.
* @return {Function | Object} Returns the listener for chaining or assignment.
**/
p.addEventListener = function(type, listener, useCapture) {
var listeners;
if (useCapture) {
listeners = this._captureListeners = this._captureListeners||{};
} else {
listeners = this._listeners = this._listeners||{};
}
var arr = listeners[type];
if (arr) { this.removeEventListener(type, listener, useCapture); }
arr = listeners[type]; // remove may have deleted the array
if (!arr) { listeners[type] = [listener]; }
else { arr.push(listener); }
return listener;
};
/**
* A shortcut method for using addEventListener that makes it easier to specify an execution scope, have a listener
* only run once, associate arbitrary data with the listener, and remove the listener.
*
* This method works by creating an anonymous wrapper function and subscribing it with addEventListener.
* The created anonymous function is returned for use with .removeEventListener (or .off).
*
* Example
*
* var listener = myBtn.on("click", handleClick, null, false, {count:3});
* function handleClick(evt, data) {
* data.count -= 1;
* console.log(this == myBtn); // true - scope defaults to the dispatcher
* if (data.count == 0) {
* alert("clicked 3 times!");
* myBtn.off("click", listener);
* // alternately: evt.remove();
* }
* }
*
* @method on
* @param {String} type The string type of the event.
* @param {Function | Object} listener An object with a handleEvent method, or a function that will be called when
* the event is dispatched.
* @param {Object} [scope] The scope to execute the listener in. Defaults to the dispatcher/currentTarget for function listeners, and to the listener itself for object listeners (ie. using handleEvent).
* @param {Boolean} [once=false] If true, the listener will remove itself after the first time it is triggered.
* @param {*} [data] Arbitrary data that will be included as the second parameter when the listener is called.
* @param {Boolean} [useCapture=false] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.
* @return {Function} Returns the anonymous function that was created and assigned as the listener. This is needed to remove the listener later using .removeEventListener.
**/
p.on = function(type, listener, scope, once, data, useCapture) {
if (listener.handleEvent) {
scope = scope||listener;
listener = listener.handleEvent;
}
scope = scope||this;
return this.addEventListener(type, function(evt) {
listener.call(scope, evt, data);
once&&evt.remove();
}, useCapture);
};
/**
* Removes the specified event listener.
*
* Important Note: that you must pass the exact function reference used when the event was added. If a proxy
* function, or function closure is used as the callback, the proxy/closure reference must be used - a new proxy or
* closure will not work.
*
* Example
*
* displayObject.removeEventListener("click", handleClick);
*
* @method removeEventListener
* @param {String} type The string type of the event.
* @param {Function | Object} listener The listener function or object.
* @param {Boolean} [useCapture] For events that bubble, indicates whether to listen for the event in the capture or bubbling/target phase.
**/
p.removeEventListener = function(type, listener, useCapture) {
var listeners = useCapture ? this._captureListeners : this._listeners;
if (!listeners) { return; }
var arr = listeners[type];
if (!arr) { return; }
for (var i=0,l=arr.length; iExample
*
* // Remove all listeners
* displayObject.removeAllEventListeners();
*
* // Remove all click listeners
* displayObject.removeAllEventListeners("click");
*
* @method removeAllEventListeners
* @param {String} [type] The string type of the event. If omitted, all listeners for all types will be removed.
**/
p.removeAllEventListeners = function(type) {
if (!type) { this._listeners = this._captureListeners = null; }
else {
if (this._listeners) { delete(this._listeners[type]); }
if (this._captureListeners) { delete(this._captureListeners[type]); }
}
};
/**
* Dispatches the specified event to all listeners.
*
* Example
*
* // Use a string event
* this.dispatchEvent("complete");
*
* // Use an Event instance
* var event = new createjs.Event("progress");
* this.dispatchEvent(event);
*
* @method dispatchEvent
* @param {Object | String | Event} eventObj An object with a "type" property, or a string type.
* While a generic object will work, it is recommended to use a CreateJS Event instance. If a string is used,
* dispatchEvent will construct an Event instance with the specified type.
* @return {Boolean} Returns the value of eventObj.defaultPrevented.
**/
p.dispatchEvent = function(eventObj) {
if (typeof eventObj == "string") {
// won't bubble, so skip everything if there's no listeners:
var listeners = this._listeners;
if (!listeners || !listeners[eventObj]) { return false; }
eventObj = new createjs.Event(eventObj);
} else if (eventObj.target && eventObj.clone) {
// redispatching an active event object, so clone it:
eventObj = eventObj.clone();
}
try { eventObj.target = this; } catch (e) {} // try/catch allows redispatching of native events
if (!eventObj.bubbles || !this.parent) {
this._dispatchEvent(eventObj, 2);
} else {
var top=this, list=[top];
while (top.parent) { list.push(top = top.parent); }
var i, l=list.length;
// capture & atTarget
for (i=l-1; i>=0 && !eventObj.propagationStopped; i--) {
list[i]._dispatchEvent(eventObj, 1+(i==0));
}
// bubbling
for (i=1; i
* capture phase: starting from the top parent to the target
* at target phase: currently being dispatched from the target
* bubbling phase: from the target to the top parent
*
* @property eventPhase
* @type Number
* @default 0
* @readonly
*/
this.eventPhase = 0;
/**
* Indicates whether the event will bubble through the display list.
* @property bubbles
* @type Boolean
* @default false
* @readonly
*/
this.bubbles = !!bubbles;
/**
* Indicates whether the default behaviour of this event can be cancelled via
* {{#crossLink "Event/preventDefault"}}{{/crossLink}}. This is set via the Event constructor.
* @property cancelable
* @type Boolean
* @default false
* @readonly
*/
this.cancelable = !!cancelable;
/**
* The epoch time at which this event was created.
* @property timeStamp
* @type Number
* @default 0
* @readonly
*/
this.timeStamp = (new Date()).getTime();
/**
* Indicates if {{#crossLink "Event/preventDefault"}}{{/crossLink}} has been called
* on this event.
* @property defaultPrevented
* @type Boolean
* @default false
* @readonly
*/
this.defaultPrevented = false;
/**
* Indicates if {{#crossLink "Event/stopPropagation"}}{{/crossLink}} or
* {{#crossLink "Event/stopImmediatePropagation"}}{{/crossLink}} has been called on this event.
* @property propagationStopped
* @type Boolean
* @default false
* @readonly
*/
this.propagationStopped = false;
/**
* Indicates if {{#crossLink "Event/stopImmediatePropagation"}}{{/crossLink}} has been called
* on this event.
* @property immediatePropagationStopped
* @type Boolean
* @default false
* @readonly
*/
this.immediatePropagationStopped = false;
/**
* Indicates if {{#crossLink "Event/remove"}}{{/crossLink}} has been called on this event.
* @property removed
* @type Boolean
* @default false
* @readonly
*/
this.removed = false;
}
var p = Event.prototype;
// public methods:
/**
* Sets {{#crossLink "Event/defaultPrevented"}}{{/crossLink}} to true.
* Mirrors the DOM event standard.
* @method preventDefault
**/
p.preventDefault = function() {
this.defaultPrevented = this.cancelable&&true;
};
/**
* Sets {{#crossLink "Event/propagationStopped"}}{{/crossLink}} to true.
* Mirrors the DOM event standard.
* @method stopPropagation
**/
p.stopPropagation = function() {
this.propagationStopped = true;
};
/**
* Sets {{#crossLink "Event/propagationStopped"}}{{/crossLink}} and
* {{#crossLink "Event/immediatePropagationStopped"}}{{/crossLink}} to true.
* Mirrors the DOM event standard.
* @method stopImmediatePropagation
**/
p.stopImmediatePropagation = function() {
this.immediatePropagationStopped = this.propagationStopped = true;
};
/**
* Causes the active listener to be removed via removeEventListener();
*
* myBtn.addEventListener("click", function(evt) {
* // do stuff...
* evt.remove(); // removes this listener.
* });
*
* @method remove
**/
p.remove = function() {
this.removed = true;
};
/**
* Returns a clone of the Event instance.
* @method clone
* @return {Event} a clone of the Event instance.
**/
p.clone = function() {
return new Event(this.type, this.bubbles, this.cancelable);
};
/**
* Provides a chainable shortcut method for setting a number of properties on the instance.
*
* @method set
* @param {Object} props A generic object containing properties to copy to the instance.
* @return {Event} Returns the instance the method is called on (useful for chaining calls.)
*/
p.set = function(props) {
for (var n in props) { this[n] = props[n]; }
return this;
};
/**
* Returns a string representation of this object.
* @method toString
* @return {String} a string representation of the instance.
**/
p.toString = function() {
return "[Event (type="+this.type+")]";
};
createjs.Event = Event;
}());
//##############################################################################
// ProgressEvent.js
//##############################################################################
this.createjs = this.createjs || {};
(function (scope) {
"use strict";
/**
* A createjs Event that is dispatched when progress changes.
* @class ProgressEvent
* @param {Number} loaded The amount that has been loaded. This can be any number relative to the total.
* @param {Number} [total] The total amount that will load. This will default to 0, so does not need to be passed in,
* as long as the loaded value is a progress value (between 0 and 1).
* @constructor
*/
function ProgressEvent(loaded, total) {
this.Event_constructor("progress");
/**
* The amount that has been loaded (out of a total amount)
* @property loaded
* @type {Number}
*/
this.loaded = loaded;
/**
* The total "size" of the load.
* @oroperty size
* @type {Number}
* @default 1
*/
this.total = (total == null) ? 1 : total;
/**
* The percentage (out of 1) that the load has been completed. This is calculated using `loaded/total`.
* @property progress
* @type {Number}
* @default 0
*/
this.progress = (total == 0) ? 0 : this.loaded / this.total;
};
var p = createjs.extend(ProgressEvent, createjs.Event);
/**
* Returns a clone of the ProgressEvent instance.
* @method clone
* @return {ProgressEvent} a clone of the Event instance.
**/
p.clone = function() {
return new createjs.ProgressEvent(this.loaded, this.total);
};
createjs.ProgressEvent = createjs.promote(ProgressEvent, "Event");
}(window));
//##############################################################################
// LoadItem.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
/**
* @class LoadItem
*
* @constructor
*/
function LoadItem() {
/**
* The source of the file that is being loaded. This property is required. The source can
* either be a string (recommended), or an HTML tag.
*
* @type {null}
*/
this.src = null;
/**
* The source of the file that is being loaded. This property is required. The source can
* either be a string (recommended), or an HTML tag.
*
* Check {{#crossLink "DataTypes"}}DataTypes{{/crossLink}} for the full list of supported types.
*
* @type {String|HTMLMediaElement|HTMLImageElement|HTMLLinkElement}
*/
this.type = createjs.AbstractLoader.TEXT;
/**
* A string identifier which can be used to reference the loaded object.
*
* @type {String|Number}
*/
this.id = null;
/**
* Set to `true` to ensure this asset loads in the order defined in the manifest. This
* will happen when the max connections has been set above 1 (using {{#crossLink "LoadQueue/setMaxConnections"}}{{/crossLink}}),
* and will only affect other assets also defined as `maintainOrder`. Everything else will finish as it is
* loaded. Ordered items are combined with script tags loading in order when {{#crossLink "LoadQueue/maintainScriptOrder:property"}}{{/crossLink}}
* is set to `true`.
*
* @type {boolean}
*/
this.maintainOrder = false;
/**
* Optional, used for JSONP requests, to define what method to call when the JSONP is loaded.
*
* @type {String}
*/
this.callback = null;
/**
* An arbitrary data object, which is included with the loaded object
*
* @type {Object}
*/
this.data = null;
/**
* uUsed to define if this request uses GET or POST when sending data to the server. The default value is "GET"
*
* @type {String}
*/
this.method = createjs.LoadItem.GET;
/**
* Optional object of name/value pairs to send to the server.
*
* @type {Object}
*/
this.values = null;
/**
* Optional object hash of headers to attach to an XHR request. PreloadJS will automatically
* attach some default headers when required, including Origin, Content-Type, and X-Requested-With. You may
* override the default headers if needed.
*
* @type {Object}
*/
this.headers = null;
/**
* Default false; Set to true if you need to enable credentials for XHR requests.
*
* @type {boolean}
*/
this.withCredentials = false;
/**
* String, Default for text bases files (json, xml, text, css, js) "text/plain; charset=utf-8"; Sets the mime type of XHR.
*
* @type {String}
*/
this.mimeType = null;
/**
* Sets the crossorigin attribute on images.
*
* @default Anonymous
*
* @type {boolean}
*/
this.crossOrigin = "Anonymous";
/**
* how long before we stop a request. Only applies to Tag loading and XHR level one loading.
*
* @type {number}
*/
this.loadTimeout = 8000;
};
var p = LoadItem.prototype = {};
var s = LoadItem;
s.create = function (value) {
if (typeof value == "string") {
var item = new LoadItem();
item.src = value;
return item;
} else if (value instanceof s) {
return value;
} else if (value instanceof Object) { // Don't modify object, allows users to attach random data to the item.
return value;
} else {
throw new Error("Type not recognized.");
}
};
/**
* Provides a chainable shortcut method for setting a number of properties on the instance.
*
* Example
*
* var loadItem = new createjs.LoadItem().set({src:"image.png", maintainOrder:true});
*
* @method set
* @param {Object} props A generic object containing properties to copy to the LoadItem instance.
* @return {LoadItem} Returns the instance the method is called on (useful for chaining calls.)
*/
p.set = function(props) {
for (var n in props) { this[n] = props[n]; }
return this;
};
createjs.LoadItem = s;
}());
//##############################################################################
// RequestUtils.js
//##############################################################################
(function () {
var s = {};
/**
* The Regular Expression used to test file URLS for an absolute path.
* @property ABSOLUTE_PATH
* @static
* @type {RegExp}
* @since 0.4.2
*/
s.ABSOLUTE_PATT = /^(?:\w+:)?\/{2}/i;
/**
* The Regular Expression used to test file URLS for an absolute path.
* @property RELATIVE_PATH
* @static
* @type {RegExp}
* @since 0.4.2
*/
s.RELATIVE_PATT = (/^[./]*?\//i);
/**
* The Regular Expression used to test file URLS for an extension. Note that URIs must already have the query string
* removed.
* @property EXTENSION_PATT
* @static
* @type {RegExp}
* @since 0.4.2
*/
s.EXTENSION_PATT = /\/?[^/]+\.(\w{1,5})$/i;
/**
* @method _parseURI
* Parse a file path to determine the information we need to work with it. Currently, PreloadJS needs to know:
*
* - If the path is absolute. Absolute paths start with a protocol (such as `http://`, `file://`, or
* `//networkPath`)
* - If the path is relative. Relative paths start with `../` or `/path` (or similar)
* - The file extension. This is determined by the filename with an extension. Query strings are dropped, and
* the file path is expected to follow the format `name.ext`.
*
*
* Note: This has changed from earlier versions, which used a single, complicated Regular Expression, which
* was difficult to maintain, and over-aggressive in determining all file properties. It has been simplified to
* only pull out what it needs.
* @param path
* @returns {Object} An Object with an `absolute` and `relative` Boolean, as well as an optional 'extension` String
* property, which is the lowercase extension.
* @private
*/
s.parseURI = function (path) {
var info = {absolute: false, relative: false};
if (path == null) { return info; }
// Drop the query string
var queryIndex = path.indexOf("?");
if (queryIndex > -1) {
path = path.substr(0, queryIndex);
}
// Absolute
var match;
if (s.ABSOLUTE_PATT.test(path)) {
info.absolute = true;
// Relative
} else if (s.RELATIVE_PATT.test(path)) {
info.relative = true;
}
// Extension
if (match = path.match(s.EXTENSION_PATT)) {
info.extension = match[1].toLowerCase();
}
return info;
};
/**
* Formats an object into a query string for either a POST or GET request.
* @method _formatQueryString
* @param {Object} data The data to convert to a query string.
* @param {Array} [query] Existing name/value pairs to append on to this query.
* @private
*/
s.formatQueryString = function (data, query) {
if (data == null) {
throw new Error('You must specify data.');
}
var params = [];
for (var n in data) {
params.push(n + '=' + escape(data[n]));
}
if (query) {
params = params.concat(query);
}
return params.join('&');
};
/**
* A utility method that builds a file path using a source and a data object, and formats it into a new path. All
* of the loaders in PreloadJS use this method to compile paths when loading.
* @method buildPath
* @param {String} src The source path to add values to.
* @param {Object} [data] Object used to append values to this request as a query string. Existing parameters on the
* path will be preserved.
* @returns {string} A formatted string that contains the path and the supplied parameters.
* @since 0.3.1
*/
s.buildPath = function (src, data) {
if (data == null) {
return src;
}
var query = [];
var idx = src.indexOf('?');
if (idx != -1) {
var q = src.slice(idx + 1);
query = query.concat(q.split('&'));
}
if (idx != -1) {
return src.slice(0, idx) + '?' + this._formatQueryString(data, query);
} else {
return src + '?' + this._formatQueryString(data, query);
}
};
/**
* @method _isCrossDomain
* @param {Object} item A load item with a `src` property
* @return {Boolean} If the load item is loading from a different domain than the current location.
* @private
*/
s.isCrossDomain = function (item) {
var target = document.createElement("a");
target.href = item.src;
var host = document.createElement("a");
host.href = location.href;
var crossdomain = (target.hostname != "") &&
(target.port != host.port ||
target.protocol != host.protocol ||
target.hostname != host.hostname);
return crossdomain;
};
/**
* @method _isLocal
* @param {Object} item A load item with a `src` property
* @return {Boolean} If the load item is loading from the "file:" protocol. Assume that the host must be local as
* well.
* @private
*/
s.isLocal = function (item) {
var target = document.createElement("a");
target.href = item.src;
return target.hostname == "" && target.protocol == "file:";
};
/**
* Determine if a specific type should be loaded as a binary file. Currently, only images and items marked
* specifically as "binary" are loaded as binary. Note that audio is not a binary type, as we can not play
* back using an audio tag if it is loaded as binary. Plugins can change the item type to binary to ensure they get
* a binary result to work with. Binary files are loaded using XHR2.
* @method isBinary
* @param {String} type The item type.
* @return {Boolean} If the specified type is binary.
* @private
*/
s.isBinary = function (type) {
switch (type) {
case createjs.AbstractLoader.IMAGE:
case createjs.AbstractLoader.BINARY:
return true;
default:
return false;
}
};
/**
* Utility function to check if item is a valid HTMLImageElement
*
* @param item {object}
* @returns {boolean}
*/
s.isImageTag = function(item) {
return item instanceof HTMLImageElement;
};
/**
* Utility function to check if item is a valid HTMLAudioElement
*
* @param item
* @returns {boolean}
*/
s.isAudioTag = function(item) {
if (window.HTMLAudioElement) {
return item instanceof HTMLAudioElement;
} else {
return false;
}
};
/**
* Utility function to check if item is a valid HTMLVideoElement
*
* @param item
* @returns {boolean}
*/
s.isVideoTag = function(item) {
if (window.HTMLVideoElement) {
return item instanceof HTMLVideoElement;
} else {
false;
}
};
/**
* Determine if a specific type is a text based asset, and should be loaded as UTF-8.
* @method isText
* @param {String} type The item type.
* @return {Boolean} If the specified type is text.
* @private
*/
s.isText = function (type) {
switch (type) {
case createjs.AbstractLoader.TEXT:
case createjs.AbstractLoader.JSON:
case createjs.AbstractLoader.MANIFEST:
case createjs.AbstractLoader.XML:
case createjs.AbstractLoader.HTML:
case createjs.AbstractLoader.CSS:
case createjs.AbstractLoader.SVG:
case createjs.AbstractLoader.JAVASCRIPT:
return true;
default:
return false;
}
};
/**
* Determine the type of the object using common extensions. Note that the type can be passed in with the load item
* if it is an unusual extension.
* @param {String} extension The file extension to use to determine the load type.
* @return {String} The determined load type (for example, AbstractLoader.IMAGE or null if it can not be
* determined by the extension.
* @private
*/
s.getTypeByExtension = function (extension) {
if (extension == null) {
return createjs.AbstractLoader.TEXT;
}
switch (extension.toLowerCase()) {
case "jpeg":
case "jpg":
case "gif":
case "png":
case "webp":
case "bmp":
return createjs.AbstractLoader.IMAGE;
case "ogg":
case "mp3":
case "webm":
return createjs.AbstractLoader.SOUND;
case "mp4":
case "webm":
case "ts":
return createjs.AbstractLoader.VIDEO;
case "json":
return createjs.AbstractLoader.JSON;
case "xml":
return createjs.AbstractLoader.XML;
case "css":
return createjs.AbstractLoader.CSS;
case "js":
return createjs.AbstractLoader.JAVASCRIPT;
case 'svg':
return createjs.AbstractLoader.SVG;
default:
return createjs.AbstractLoader.TEXT;
}
};
createjs.RequestUtils = s;
}());
//##############################################################################
// AbstractLoader.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor
/**
* The base loader, which defines all the generic callbacks and events. All loaders extend this class, including the
* {{#crossLink "LoadQueue"}}{{/crossLink}}.
* @class AbstractLoader
* @extends EventDispatcher
*/
function AbstractLoader(loadItem, preferXHR, type) {
this.EventDispatcher_constructor();
// public properties
/**
* If the loader has completed loading. This provides a quick check, but also ensures that the different approaches
* used for loading do not pile up resulting in more than one complete event.
* @property loaded
* @type {Boolean}
* @default false
*/
this.loaded = false;
/**
* Determine if the loader was canceled. Canceled loads will not fire complete events. Note that
* {{#crossLink "LoadQueue"}}{{/crossLink}} queues should be closed using {{#crossLink "AbstractLoader/close"}}{{/crossLink}}
* instead of setting this property.
* @property canceled
* @type {Boolean}
* @default false
*/
this.canceled = false;
/**
* The current load progress (percentage) for this item. This will be a number between 0 and 1.
*
* Example
*
* var queue = new createjs.LoadQueue();
* queue.loadFile("largeImage.png");
* queue.on("progress", function() {
* console.log("Progress:", queue.progress, event.progress);
* });
*
* @property progress
* @type {Number}
* @default 0
*/
this.progress = 0;
/**
* The type of this item.
* See {{#crossLink}}DataTypes{{/crossLink}} for a full list of supported types.
*
* @type {null}
*/
this.type = type;
// protected properties
/**
* The item this loader represents. Note that this is null in a {{#crossLink "LoadQueue"}}{{/crossLink}}, but will
* be available on loaders such as {{#crossLink "XMLLoader"}}{{/crossLink}} and {{#crossLink "ImageLoader"}}{{/crossLink}}.
* @property _item
* @type {Object}
* @private
*/
if (loadItem) {
this._item = createjs.LoadItem.create(loadItem);
} else {
this._item = null;
}
this._preferXHR = preferXHR;
this._rawResult = null;
/**
* A list of items that loaders load behind the scenes. This does not include the main item the loader is
* responsible for loading. Examples of loaders that have subitems include the {{#crossLink "SpriteSheetLoader"}}{{/crossLink}} and
* {{#crossLink "ManifestLoader"}}{{/crossLink}}.
* @property _loadItems
* @type {null}
* @protected
*/
this._loadedItems = null;
};
var p = createjs.extend(AbstractLoader, createjs.EventDispatcher);
var s = AbstractLoader;
/**
* Defines a POST request, use for a method value when loading data.
* @property POST
* @type {string}
* @defaultValue post
*/
s.POST = "POST";
/**
* Defines a GET request, use for a method value when loading data.
* @property GET
* @type {string}
* @defaultValue get
*/
s.GET = "GET";
/**
* The preload type for generic binary types. Note that images are loaded as binary files when using XHR.
* @property BINARY
* @type {String}
* @default binary
* @static
* @since 0.6.0
*/
s.BINARY = "binary";
/**
* The preload type for css files. CSS files are loaded using a <link> when loaded with XHR, or a
* <style> tag when loaded with tags.
* @property CSS
* @type {String}
* @default css
* @static
* @since 0.6.0
*/
s.CSS = "css";
/**
* The preload type for image files, usually png, gif, or jpg/jpeg. Images are loaded into an <image> tag.
* @property IMAGE
* @type {String}
* @default image
* @static
* @since 0.6.0
*/
s.IMAGE = "image";
/**
* The preload type for javascript files, usually with the "js" file extension. JavaScript files are loaded into a
* <script> tag.
*
* Since version 0.4.1+, due to how tag-loaded scripts work, all JavaScript files are automatically injected into
* the body of the document to maintain parity between XHR and tag-loaded scripts. In version 0.4.0 and earlier,
* only tag-loaded scripts are injected.
* @property JAVASCRIPT
* @type {String}
* @default javascript
* @static
* @since 0.6.0
*/
s.JAVASCRIPT = "javascript";
/**
* The preload type for json files, usually with the "json" file extension. JSON data is loaded and parsed into a
* JavaScript object. Note that if a `callback` is present on the load item, the file will be loaded with JSONP,
* no matter what the {{#crossLink "LoadQueue/preferXHR:property"}}{{/crossLink}} property is set to, and the JSON
* must contain a matching wrapper function.
* @property JSON
* @type {String}
* @default json
* @static
* @since 0.6.0
*/
s.JSON = "json";
/**
* The preload type for jsonp files, usually with the "json" file extension. JSON data is loaded and parsed into a
* JavaScript object. You are required to pass a callback parameter that matches the function wrapper in the JSON.
* Note that JSONP will always be used if there is a callback present, no matter what the {{#crossLink "LoadQueue/preferXHR:property"}}{{/crossLink}}
* property is set to.
* @property JSONP
* @type {String}
* @default jsonp
* @static
* @since 0.6.0
*/
s.JSONP = "jsonp";
/**
* The preload type for json-based manifest files, usually with the "json" file extension. The JSON data is loaded
* and parsed into a JavaScript object. PreloadJS will then look for a "manifest" property in the JSON, which is an
* Array of files to load, following the same format as the {{#crossLink "LoadQueue/loadManifest"}}{{/crossLink}}
* method. If a "callback" is specified on the manifest object, then it will be loaded using JSONP instead,
* regardless of what the {{#crossLink "LoadQueue/preferXHR:property"}}{{/crossLink}} property is set to.
* @property MANIFEST
* @type {String}
* @default manifest
* @static
* @since 0.6.0
*/
s.MANIFEST = "manifest";
/**
* The preload type for sound files, usually mp3, ogg, or wav. When loading via tags, audio is loaded into an
* <audio> tag.
* @property SOUND
* @type {String}
* @default sound
* @static
* @since 0.6.0
*/
s.SOUND = "sound";
/**
* The preload type for video files, usually mp4, ts, or ogg. When loading via tags, video is loaded into an
* <video> tag.
* @property VIDEO
* @type {String}
* @default video
* @static
* @since 0.6.0
*/
s.VIDEO = "video";
/**
* The preload type for SpriteSheet files. SpriteSheet files are JSON files that contain string image paths.
* @property SPRITESHEET
* @type {String}
* @default spritesheet
* @static
* @since 0.6.0
*/
s.SPRITESHEET = "spritesheet";
/**
* The preload type for SVG files.
* @property SVG
* @type {String}
* @default svg
* @static
* @since 0.6.0
*/
s.SVG = "svg";
/**
* The preload type for text files, which is also the default file type if the type can not be determined. Text is
* loaded as raw text.
* @property TEXT
* @type {String}
* @default text
* @static
* @since 0.6.0
*/
s.TEXT = "text";
/**
* The preload type for xml files. XML is loaded into an XML document.
* @property XML
* @type {String}
* @default xml
* @static
* @since 0.6.0
*/
s.XML = "xml";
// Events
/**
* The event that is fired when the overall progress changes.
* @event progress
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @param {Number} loaded The amount that has been loaded so far. Note that this is may just be a percentage of 1,
* since file sizes can not be determined before a load is kicked off, if at all.
* @param {Number} total The total number of bytes. Note that this may just be 1.
* @param {Number} progress The ratio that has been loaded between 0 and 1.
* @since 0.3.0
*/
/**
* The event that is fired when a load starts.
* @event loadstart
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.3.1
*/
/**
* The event that is fired when the entire queue has been loaded.
* @event complete
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.3.0
*/
/**
* The event that is fired when the loader encounters an error. If the error was encountered by a file, the event will
* contain the item that caused the error. There may be additional properties such as the error reason on event
* objects.
* @event error
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @param {Object} [item] The item that was being loaded that caused the error. The item was specified in
* the {{#crossLink "LoadQueue/loadFile"}}{{/crossLink}} or {{#crossLink "LoadQueue/loadManifest"}}{{/crossLink}}
* call. If only a string path or tag was specified, the object will contain that value as a `src` property.
* @param {String} [error] The error object or text.
* @since 0.3.0
*/
/**
* Dispatched after our XHRRequest is created, but before a load.
* Allows updates to the loader for specific loading needs (ex, Binary loading, or XHR image loading.)
*
* @event initialize
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @param {AbstractLoader} loader The loader that has been initialized.
*/
//TODO: Deprecated
/**
* REMOVED. Use {{#crossLink "EventDispatcher/addEventListener"}}{{/crossLink}} and the {{#crossLink "AbstractLoader/progress:event"}}{{/crossLink}}
* event.
* @property onProgress
* @type {Function}
* @deprecated Use addEventListener and the "progress" event.
*/
/**
* REMOVED. Use {{#crossLink "EventDispatcher/addEventListener"}}{{/crossLink}} and the {{#crossLink "AbstractLoader/loadstart:event"}}{{/crossLink}}
* event.
* @property onLoadStart
* @type {Function}
* @deprecated Use addEventListener and the "loadstart" event.
*/
/**
* REMOVED. Use {{#crossLink "EventDispatcher/addEventListener"}}{{/crossLink}} and the {{#crossLink "AbstractLoader/complete:event"}}{{/crossLink}}
* event.
* @property onComplete
* @type {Function}
* @deprecated Use addEventListener and the "complete" event.
*/
/**
* REMOVED. Use {{#crossLink "EventDispatcher/addEventListener"}}{{/crossLink}} and the {{#crossLink "AbstractLoader/error:event"}}{{/crossLink}}
* event.
* @property onError
* @type {Function}
* @deprecated Use addEventListener and the "error" event.
*/
/**
* Get a reference to the manifest item that is loaded by this loader. In most cases this will be the value that was
* passed into {{#crossLink "LoadQueue"}}{{/crossLink}} using {{#crossLink "LoadQueue/loadFile"}}{{/crossLink}} or
* {{#crossLink "LoadQueue/loadManifest"}}{{/crossLink}}. However if only a String path was passed in, then it will
* be an Object created by the LoadQueue.
* @return {Object} The manifest item that this loader is responsible for loading.
*/
p.getItem = function () {
return this._item;
};
p.getResult = function (raw) {
return raw ? this._rawResult : this._result;
};
p.getTag = function () {
return this._tag;
};
p.setTag = function(tag) {
this._tag = tag;
};
/**
* Begin loading the queued items. This method can be called when a {{#crossLink "LoadQueue"}}{{/crossLink}} is set
* up but not started immediately.
* @example
* var queue = new createjs.LoadQueue();
* queue.addEventListener("complete", handleComplete);
* queue.loadManifest(fileArray, false); // Note the 2nd argument that tells the queue not to start loading yet
* queue.load();
* @method load
*/
p.load = function () {
this._createRequest();
this._request.on("complete", this, this);
this._request.on("progress", this, this);
this._request.on("loadStart", this, this);
this._request.on("abort", this, this);
this._request.on("timeout", this, this);
this._request.on("error", this, this);
var evt = new createjs.Event("initialize");
evt.loader = this._request;
this.dispatchEvent(evt);
this._request.load();
};
p._createRequest = function() {
if (!this._preferXHR) {
this._request = new createjs.TagRequest(this._item, false, this._tag || this._createTag(), this._tagSrcAttribute);
} else {
this._request = new createjs.XHRRequest(this._item, false);
}
};
/**
* Close the active queue. Closing a queue completely empties the queue, and prevents any remaining items from
* starting to download. Note that currently any active loads will remain open, and events may be processed.
*
* To stop and restart a queue, use the {{#crossLink "LoadQueue/setPaused"}}{{/crossLink}} method instead.
* @method close
*/
p.close = function () {
};
/**
*
*/
p.cancel = function () {
this.canceled = true;
this.destroy();
};
/**
* Remove all references to this loader.
* @method destroy
*/
p.destroy = function() {
if (this._request) {
this._request.removeAllEventListeners();
this._request.destroy();
}
this._request = null;
this._item = null;
this._rawResult = null;
this._result = null;
this._loadItems = null;
this.removeAllEventListeners();
};
/**
* Get any items loaded internally by the loader.
* @method getLoadedItems
* @returns {Array} A list of the items loaded by the loader.
*/
p.getLoadedItems = function () {
return this._loadedItems;
};
// Callback proxies
/**
* Dispatch a loadstart event. Please see the {{#crossLink "AbstractLoader/loadstart:event"}}{{/crossLink}} event
* for details on the event payload.
* @method _sendLoadStart
* @protected
*/
p._sendLoadStart = function () {
if (this._isCanceled()) { return; }
this.dispatchEvent("loadstart");
};
/**
* Dispatch a progress event. Please see the {{#crossLink "AbstractLoader/progress:event"}}{{/crossLink}} event for
* details on the event payload.
* @method _sendProgress
* @param {Number | Object} value The progress of the loaded item, or an object containing loaded
* and total properties.
* @protected
*/
p._sendProgress = function (value) {
if (this._isCanceled()) { return; }
var event = null;
if (typeof(value) == "number") {
this.progress = value;
event = new createjs.ProgressEvent(this.progress);
} else {
event = value;
this.progress = value.loaded / value.total;
event.progress = this.progress;
if (isNaN(this.progress) || this.progress == Infinity) { this.progress = 0; }
}
this.hasEventListener("progress") && this.dispatchEvent(event);
};
/**
* Dispatch a complete event. Please see the {{#crossLink "AbstractLoader/complete:event"}}{{/crossLink}} event
* @method _sendComplete
* @protected
*/
p._sendComplete = function () {
if (this._isCanceled()) { return; }
this.loaded = true;
var event = new createjs.Event("complete");
event.rawResult = this._rawResult;
if (this._result != null) {
event.result = this._result;
}
this.dispatchEvent(event);
};
/**
* Dispatch an error event. Please see the {{#crossLink "AbstractLoader/error:event"}}{{/crossLink}} event for
* details on the event payload.
* @method _sendError
* @param {Object} event The event object containing specific error properties.
* @protected
*/
p._sendError = function (event) {
if (this._isCanceled() || !this.hasEventListener("error")) { return; }
if (event == null) {
event = new createjs.ErrorEvent(); // TODO: Populate error
}
this.dispatchEvent(event);
};
/**
* Determine if the load has been canceled. This is important to ensure that method calls or asynchronous events
* do not cause issues after the queue has been cleaned up.
* @method _isCanceled
* @return {Boolean} If the loader has been canceled.
* @protected
*/
p._isCanceled = function () {
if (window.createjs == null || this.canceled) {
return true;
}
return false;
};
/**
* Optional; Called just before a request dispatches its complete event.
* Allows plugins to set a custom result value.
* Will be passed a single loader parameter, which is the current loader in use.
*
* @type Function
* @returns {Object}
* @private
*/
p.resultFormatter = null;
p.handleEvent = function (event) {
switch (event.type) {
case "complete":
this._rawResult = event.target._response;
this._result = this.resultFormatter && this.resultFormatter(this) || this._rawResult;
this._sendComplete();
break;
case "progress":
this._sendProgress(event);
break;
case "error":
this._sendError(event);
break;
case "loadstart":
this._sendLoadStart();
break;
case "abort":
case "timeout":
if (!this._isCanceled()) {
this.dispatchEvent(event.type);
}
break;
}
};
/**
* @deprecated Prefer RequestUtils.buildPath instead of this method.
*/
p.buildPath = function (src, data) {
return createjs.RequestUtils.buildPath(src, data);
};
/**
* @method toString
* @return {String} a string representation of the instance.
*/
p.toString = function () {
return "[PreloadJS AbstractLoader]";
};
createjs.AbstractLoader = createjs.promote(AbstractLoader, "EventDispatcher");
}());
//##############################################################################
// AbstractMediaLoader.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor
/**
* The AbstractMediaLoader class description goes here.
*
*/
function AbstractMediaLoader(loadItem, preferXHR, type) {
this.AbstractLoader_constructor(loadItem, preferXHR, type);
// public properties
// protected properties
this._tagSrcAttribute = "src";
/**
* Used to determine what type of tag to create, for example "audio"
* @property _tagType
* @type {string}
* @private
*/
this._tagType = type;
this.resultFormatter = this._formatResult;
};
var p = createjs.extend(AbstractMediaLoader, createjs.AbstractLoader);
// static properties
// public methods
// protected methods
p.load = function () {
// TagRequest will handle most of this, but Sound / Video need a few custom properties, so just handle them here.
if (!this._tag) {
this._tag = this._createTag(this._item.src);
}
this._tag.preload = "auto";
this._tag.load();
this.AbstractLoader_load();
};
/**
* Abstract, create a new tag if none exist.
*
* @private
*/
p._createTag = function () {
};
p._formatResult = function (loader) {
this._tag.removeEventListener && this._tag.removeEventListener("canplaythrough", this._loadedHandler);
this._tag.onstalled = null;
if (this._preferXHR) {
loader.getTag().src = loader.getResult(true);
}
return loader.getTag();
};
createjs.AbstractMediaLoader = createjs.promote(AbstractMediaLoader, "AbstractLoader");
}());
//##############################################################################
// AbstractRequest.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
var AbstractRequest = function (item) {
this._item = item;
};
var p = createjs.extend(AbstractRequest, createjs.EventDispatcher);
var s = AbstractRequest;
/**
* Abstract function.
*
*/
p.load = function() {
};
p.destroy = function() {
};
p.cancel = function() {
};
createjs.AbstractRequest = createjs.promote(AbstractRequest, "EventDispatcher");
}());
//##############################################################################
// TagRequest.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor
/**
* The TagRequest class description goes here.
*
*/
function TagRequest(loadItem, preferXHR, tag, srcAttribute) {
this.AbstractRequest_constructor(loadItem, preferXHR);
// public properties
// protected properties
this._tag = tag;
this._tagSrcAttribute = srcAttribute;
this._loadedHandler = createjs.proxy(this._handleTagComplete, this);
};
var p = createjs.extend(TagRequest, createjs.AbstractRequest);
var s = TagRequest;
p.load = function () {
window.document.body.appendChild(this._tag);
this._tag.onload = createjs.proxy(this._handleTagComplete, this);
this._tag.onreadystatechange = createjs.proxy(this._handleReadyStateChange, this);
var evt = new createjs.Event("initialize");
evt.loader = this._tag;
this.dispatchEvent(evt);
this._tag[this._tagSrcAttribute] = this._item.src;
};
p.destroy = function() {
this._clean();
this._tag = null;
this.AbstractRequest_destory();
};
/**
* Handle the readyStateChange event from a tag. We sometimes need this in place of the onload event (mainly SCRIPT
* and LINK tags), but other cases may exist.
* @method _handleReadyStateChange
* @private
*/
p._handleReadyStateChange = function () {
clearTimeout(this._loadTimeout);
// This is strictly for tags in browsers that do not support onload.
var tag = this._tag;
// Complete is for old IE support.
if (tag.readyState == "loaded" || tag.readyState == "complete") {
this._handleTagComplete();
}
};
p._handleTagComplete = function () {
this._rawResult = this._tag;
this._result = this.resultFormatter && this.resultFormatter(this) || this._rawResult;
this._clean();
this.dispatchEvent("complete");
};
/**
* Remove event listeners, but don't destory the request object
*
* @private
*/
p._clean = function() {
this._tag.onload = null;
this._tag.onreadystatechange = null;
};
/**
* Handle a stalled audio event. The main place we seem to get these is with HTMLAudio in Chrome when we try and
* playback audio that is already in a load, but not complete.
* @method _handleStalled
* @private
*/
p._handleStalled = function () {
//Ignore, let the timeout take care of it. Sometimes its not really stopped.
};
createjs.TagRequest = createjs.promote(TagRequest, "AbstractRequest");
}());
//##############################################################################
// MediaTagRequest.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor
/**
* The TagRequest class description goes here.
*
*/
function MediaTagRequest(loadItem, preferXHR, tag, srcAttribute) {
this.AbstractRequest_constructor(loadItem, preferXHR);
// public properties
// protected properties
this._tag = tag;
this._tagSrcAttribute = srcAttribute;
this._loadedHandler = createjs.proxy(this._handleTagComplete, this);
};
var p = createjs.extend(MediaTagRequest, createjs.TagRequest);
var s = MediaTagRequest;
p.load = function () {
this._tag.onstalled = createjs.proxy(this._handleStalled, this);
this._tag.onprogress = createjs.proxy(this._handleProgress, this);
// This will tell us when audio is buffered enough to play through, but not when its loaded.
// The tag doesn't keep loading in Chrome once enough has buffered, and we have decided that behaviour is sufficient.
this._tag.addEventListener && this._tag.addEventListener("canplaythrough", this._loadedHandler); // canplaythrough callback doesn't work in Chrome, so we use an event.
this.TagRequest_load();
};
/**
* Handle the readyStateChange event from a tag. We sometimes need this in place of the onload event (mainly SCRIPT
* and LINK tags), but other cases may exist.
* @method _handleReadyStateChange
* @private
*/
p._handleReadyStateChange = function () {
clearTimeout(this._loadTimeout);
// This is strictly for tags in browsers that do not support onload.
var tag = this._tag;
// Complete is for old IE support.
if (tag.readyState == "loaded" || tag.readyState == "complete") {
this._handleTagComplete();
}
};
/**
* Handle a stalled audio event. The main place we seem to get these is with HTMLAudio in Chrome when we try and
* playback audio that is already in a load, but not complete.
* @method _handleStalled
* @private
*/
p._handleStalled = function () {
//Ignore, let the timeout take care of it. Sometimes its not really stopped.
};
/**
* The XHR request has reported progress.
* @method _handleProgress
* @param {Object} event The XHR progress event.
* @private
*/
p._handleProgress = function (event) {
if (!event || event.loaded > 0 && event.total == 0) {
return; // Sometimes we get no "total", so just ignore the progress event.
}
var newEvent = new createjs.ProgressEvent(event.loaded, event.total);
this.dispatchEvent(newEvent);
};
/**
*
* @private
*/
p._clean = function () {
this._tag.removeEventListener && this._tag.removeEventListener("canplaythrough", this._loadedHandler);
this._tag.onstalled = null;
this._tag.onprogress = null;
this.TagRequest__clean();
};
createjs.MediaTagRequest = createjs.promote(MediaTagRequest, "TagRequest");
}());
//##############################################################################
// XHRRequest.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor
/**
* A preloader that loads items using XHR requests, usually XMLHttpRequest. However XDomainRequests will be used
* for cross-domain requests if possible, and older versions of IE fall back on to ActiveX objects when necessary.
* XHR requests load the content as text or binary data, provide progress and consistent completion events, and
* can be canceled during load. Note that XHR is not supported in IE 6 or earlier, and is not recommended for
* cross-domain loading.
* @class XHRRequest
* @constructor
* @param {Object} item The object that defines the file to load. Please see the {{#crossLink "LoadQueue/loadFile"}}{{/crossLink}}
* for an overview of supported file properties.
* @extends AbstractLoader
*/
function XHRRequest(item) {
this.AbstractRequest_constructor(item);
// protected properties
/**
* A reference to the XHR request used to load the content.
* @property _request
* @type {XMLHttpRequest | XDomainRequest | ActiveX.XMLHTTP}
* @private
*/
this._request = null;
/**
* A manual load timeout that is used for browsers that do not support the onTimeout event on XHR (XHR level 1,
* typically IE9).
* @property _loadTimeout
* @type {Number}
* @private
*/
this._loadTimeout = null;
/**
* The browser's XHR (XMLHTTPRequest) version. Supported versions are 1 and 2. There is no official way to detect
* the version, so we use capabilities to make a best guess.
* @property _xhrLevel
* @type {Number}
* @default 1
* @private
*/
this._xhrLevel = 1;
/**
* The response of a loaded file. This is set because it is expensive to look up constantly. This property will be
* null until the file is loaded.
* @property _response
* @type {mixed}
* @private
*/
this._response = null;
/**
* The response of the loaded file before it is modified. In most cases, content is converted from raw text to
* an HTML tag or a formatted object which is set to the result property, but the developer may still
* want to access the raw content as it was loaded.
* @property _rawResponse
* @type {String|Object}
* @private
*/
this._rawResponse = null;
this._canceled = false;
// Setup our event handlers now.
this._handleLoadStartProxy = createjs.proxy(this._handleLoadStart, this);
this._handleProgressProxy = createjs.proxy(this._handleProgress, this);
this._handleAbortProxy = createjs.proxy(this._handleAbort, this);
this._handleErrorProxy = createjs.proxy(this._handleError, this);
this._handleTimeoutProxy = createjs.proxy(this._handleTimeout, this);
this._handleLoadProxy = createjs.proxy(this._handleLoad, this);
this._handleReadyStateChangeProxy = createjs.proxy(this._handleReadyStateChange, this);
if (!this._createXHR(item)) {
//TODO: Throw error?
}
};
var p = createjs.extend(XHRRequest, createjs.AbstractRequest);
// static properties
/**
* A list of XMLHTTP object IDs to try when building an ActiveX object for XHR requests in earlier versions of IE.
* @property ACTIVEX_VERSIONS
* @type {Array}
* @since 0.4.2
* @private
*/
XHRRequest.ACTIVEX_VERSIONS = [
"Msxml2.XMLHTTP.6.0",
"Msxml2.XMLHTTP.5.0",
"Msxml2.XMLHTTP.4.0",
"MSXML2.XMLHTTP.3.0",
"MSXML2.XMLHTTP",
"Microsoft.XMLHTTP"
];
// Public methods
/**
* Look up the loaded result.
* @method getResult
* @param {Boolean} [raw=false] Return a raw result instead of a formatted result. This applies to content
* loaded via XHR such as scripts, XML, CSS, and Images. If there is no raw result, the formatted result will be
* returned instead.
* @return {Object} A result object containing the content that was loaded, such as:
*
* - An image tag (<image />) for images
* - A script tag for JavaScript (<script />). Note that scripts loaded with tags may be added to the
* HTML head.
* - A style tag for CSS (<style />)
* - Raw text for TEXT
* - A formatted JavaScript object defined by JSON
* - An XML document
* - An binary arraybuffer loaded by XHR
*
* Note that if a raw result is requested, but not found, the result will be returned instead.
*/
p.getResult = function (raw) {
if (raw && this._rawResponse) {
return this._rawResponse;
}
return this._response;
};
// Overrides abstract method in AbstractRequest
p.cancel = function () {
this.canceled = true;
this._clean();
this._request.abort();
};
// Overrides abstract method in AbstractLoader
p.load = function () {
if (this._request == null) {
this._handleError();
return;
}
//Events
this._request.addEventListener("loadstart", this._handleLoadStartProxy);
this._request.addEventListener("progress", this._handleProgressProxy);
this._request.addEventListener("abort", this._handleAbortProxy);
this._request.addEventListener("error",this._handleErrorProxy);
this._request.addEventListener("timeout", this._handleTimeoutProxy);
// Note: We don't get onload in all browsers (earlier FF and IE). onReadyStateChange handles these.
this._request.addEventListener("load", this._handleLoadProxy);
this._request.addEventListener("readystatechange", this._handleReadyStateChangeProxy);
// Set up a timeout if we don't have XHR2
if (this._xhrLevel == 1) {
this._loadTimeout = setTimeout(createjs.proxy(this._handleTimeout, this), this.getItem().loadTimeout);
}
// Sometimes we get back 404s immediately, particularly when there is a cross origin request. // note this does not catch in Chrome
try {
if (!this._item.values || this._item.method == createjs.AbstractLoader.GET) {
this._request.send();
} else if (this._item.method == createjs.AbstractLoader.POST) {
this._request.send(createjs.RequestUtils.formatQueryString(this._item.values));
}
} catch (error) {
this.dispatchEvent(new createjs.ErrorEvent("XHR_SEND", null, error));
}
};
p.setResponseType = function (type) {
this._request.responseType = type;
};
/**
* Get all the response headers from the XmlHttpRequest.
*
* From the docs: Return all the HTTP headers, excluding headers that are a case-insensitive match
* for Set-Cookie or Set-Cookie2, as a single string, with each header line separated by a U+000D CR U+000A LF pair,
* excluding the status line, and with each header name and header value separated by a U+003A COLON U+0020 SPACE
* pair.
* @method getAllResponseHeaders
* @return {String}
* @since 0.4.1
*/
p.getAllResponseHeaders = function () {
if (this._request.getAllResponseHeaders instanceof Function) {
return this._request.getAllResponseHeaders();
} else {
return null;
}
};
/**
* Get a specific response header from the XmlHttpRequest.
*
* From the docs: Returns the header field value from the response of which the field name matches
* header, unless the field name is Set-Cookie or Set-Cookie2.
* @method getResponseHeader
* @param {String} header The header name to retrieve.
* @return {String}
* @since 0.4.1
*/
p.getResponseHeader = function (header) {
if (this._request.getResponseHeader instanceof Function) {
return this._request.getResponseHeader(header);
} else {
return null;
}
};
// protected methods
/**
* The XHR request has reported progress.
* @method _handleProgress
* @param {Object} event The XHR progress event.
* @private
*/
p._handleProgress = function (event) {
if (!event || event.loaded > 0 && event.total == 0) {
return; // Sometimes we get no "total", so just ignore the progress event.
}
var newEvent = new createjs.ProgressEvent(event.loaded, event.total);
this.dispatchEvent(newEvent);
};
/**
* The XHR request has reported a load start.
* @method _handleLoadStart
* @param {Object} event The XHR loadStart event.
* @private
*/
p._handleLoadStart = function (event) {
clearTimeout(this._loadTimeout);
this.dispatchEvent("loadstart");
};
/**
* The XHR request has reported an abort event.
* @method handleAbort
* @param {Object} event The XHR abort event.
* @private
*/
p._handleAbort = function (event) {
this._clean();
this.dispatchEvent(new createjs.ErrorEvent("XHR_ABORTED", null, event));
};
/**
* The XHR request has reported an error event.
* @method _handleError
* @param {Object} event The XHR error event.
* @private
*/
p._handleError = function (event) {
this._clean();
this.dispatchEvent(new createjs.ErrorEvent(null, null, event));
};
/**
* The XHR request has reported a readyState change. Note that older browsers (IE 7 & 8) do not provide an onload
* event, so we must monitor the readyStateChange to determine if the file is loaded.
* @method _handleReadyStateChange
* @param {Object} event The XHR readyStateChange event.
* @private
*/
p._handleReadyStateChange = function (event) {
if (this._request.readyState == 4) {
this._handleLoad();
}
};
/**
* The XHR request has completed. This is called by the XHR request directly, or by a readyStateChange that has
* request.readyState == 4. Only the first call to this method will be processed.
* @method _handleLoad
* @param {Object} event The XHR load event.
* @private
*/
p._handleLoad = function (event) {
if (this.loaded) {
return;
}
this.loaded = true;
var error = this._checkError();
if (error) {
this._handleError(error);
return;
}
this._response = this._getResponse();
this._clean();
this.dispatchEvent(new createjs.Event("complete"));
};
/**
* The XHR request has timed out. This is called by the XHR request directly, or via a setTimeout
* callback.
* @method _handleTimeout
* @param {Object} [event] The XHR timeout event. This is occasionally null when called by the backup setTimeout.
* @private
*/
p._handleTimeout = function (event) {
this._clean();
this.dispatchEvent(new createjs.ErrorEvent("PRELOAD_TIMEOUT", null, event));
};
// Protected
/**
* Determine if there is an error in the current load. This checks the status of the request for problem codes. Note
* that this does not check for an actual response. Currently, it only checks for 404 or 0 error code.
* @method _checkError
* @return {int} If the request status returns an error code.
* @private
*/
p._checkError = function () {
//LM: Probably need additional handlers here, maybe 501
var status = parseInt(this._request.status);
switch (status) {
case 404: // Not Found
case 0: // Not Loaded
return new Error(status);
}
return null;
};
/**
* Validate the response. Different browsers have different approaches, some of which throw errors when accessed
* in other browsers. If there is no response, the _response property will remain null.
* @method _getResponse
* @private
*/
p._getResponse = function () {
if (this._response != null) {
return this._response;
}
if (this._request.response != null) {
return this._request.response;
}
// Android 2.2 uses .responseText
try {
if (this._request.responseText != null) {
return this._request.responseText;
}
} catch (e) {
}
// When loading XML, IE9 does not return .response, instead it returns responseXML.xml
try {
if (this._request.responseXML != null) {
return this._request.responseXML;
}
} catch (e) {
}
return null;
};
/**
* Create an XHR request. Depending on a number of factors, we get totally different results.
* - Some browsers get an
XDomainRequest when loading cross-domain.
* - XMLHttpRequest are created when available.
* - ActiveX.XMLHTTP objects are used in older IE browsers.
* - Text requests override the mime type if possible
* - Origin headers are sent for crossdomain requests in some browsers.
* - Binary loads set the response type to "arraybuffer"
* @method _createXHR
* @param {Object} item The requested item that is being loaded.
* @return {Boolean} If an XHR request or equivalent was successfully created.
* @private
*/
p._createXHR = function (item) {
// Check for cross-domain loads. We can't fully support them, but we can try.
var crossdomain = createjs.RequestUtils.isCrossDomain(item);
var headers = {};
// Create the request. Fallback to whatever support we have.
var req = null;
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
// This is 8 or 9, so use XDomainRequest instead.
if (crossdomain && req.withCredentials === undefined && window.XDomainRequest) {
req = new XDomainRequest();
}
} else { // Old IE versions use a different approach
for (var i = 0, l = s.ACTIVEX_VERSIONS.length; i < l; i++) {
var axVersion = s.ACTIVEX_VERSIONS[i];
try {
req = new ActiveXObject(axVersions);
break;
} catch (e) {}
}
if (req == null) { return false; }
}
// IE9 doesn't support overrideMimeType(), so we need to check for it.
if (item.mimeType && req.overrideMimeType) {
req.overrideMimeType(item.mimeType);
}
// Determine the XHR level
this._xhrLevel = (typeof req.responseType === "string") ? 2 : 1;
var src = null;
if (item.method == createjs.AbstractLoader.GET) {
src = createjs.RequestUtils.buildPath(item.src, item.values);
} else {
src = item.src;
}
// Open the request. Set cross-domain flags if it is supported (XHR level 1 only)
req.open(item.method || createjs.AbstractLoader.GET, src, true);
if (crossdomain && req instanceof XMLHttpRequest && this._xhrLevel == 1) {
headers["Origin"] = location.origin;
}
// To send data we need to set the Content-type header)
if (item.values && item.method == createjs.AbstractLoader.POST) {
headers["Content-Type"] = "application/x-www-form-urlencoded";
}
if (!crossdomain && !headers["X-Requested-With"]) {
headers["X-Requested-With"] = "XMLHttpRequest";
}
if (item.headers) {
for (var n in item.headers) {
headers[n] = item.headers[n];
}
}
for (n in headers) {
req.setRequestHeader(n, headers[n])
}
if (req instanceof XMLHttpRequest && item.withCredentials !== undefined) {
req.withCredentials = item.withCredentials;
}
this._request = req;
return true;
};
/**
* A request has completed (or failed or canceled), and needs to be disposed.
* @method _clean
* @private
*/
p._clean = function () {
clearTimeout(this._loadTimeout);
this._request.removeEventListener("loadstart", this._handleLoadStartProxy);
this._request.removeEventListener("progress", this._handleProgressProxy);
this._request.removeEventListener("abort", this._handleAbortProxy);
this._request.removeEventListener("error",this._handleErrorProxy);
this._request.removeEventListener("timeout", this._handleTimeoutProxy);
this._request.removeEventListener("load", this._handleLoadProxy);
this._request.removeEventListener("readystatechange", this._handleReadyStateChangeProxy);
};
p.toString = function () {
return "[PreloadJS XHRRequest]";
};
createjs.XHRRequest = createjs.promote(XHRRequest, "AbstractRequest");
}());
//##############################################################################
// SoundLoader.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor
/**
* The SoundLoader class description goes here.
*
*/
function SoundLoader(loadItem, preferXHR) {
this.AbstractMediaLoader_constructor(loadItem, preferXHR, createjs.AbstractLoader.SOUND);
this._tagType = "audio";
if (createjs.RequestUtils.isAudioTag(loadItem) || createjs.RequestUtils.isAudioTag(loadItem.src)) {
this._preferXHR = false;
this._tag =createjs.RequestUtils.isAudioTag(loadItem)?loadItem:loadItem.src;
}
};
var p = createjs.extend(SoundLoader, createjs.AbstractMediaLoader);
var s = SoundLoader;
/**
* LoadQueue calls this when it creates loaders.
* Each loader has the option to say either yes (true) or no (false).
*
* @private
* @param item The LoadItem LoadQueue is trying to load.
* @returns {boolean}
*/
s.canLoadItem = function (item) {
return item.type == createjs.AbstractLoader.SOUND;
};
p._createRequest = function() {
if (!this._preferXHR) {
this._request = new createjs.MediaTagRequest(this._item, false, this._tag || this._createTag(), this._tagSrcAttribute);
} else {
this._request = new createjs.XHRRequest(this._item, false);
}
};
/**
* Create an HTML audio tag.
* @method _createTag
* @param {String} src The source file to set for the audio tag.
* @return {HTMLElement} Returns an HTML audio tag.
* @protected
*/
p._createTag = function (src) {
var tag = document.createElement(this._tagType);
tag.autoplay = false;
tag.preload = "none";
//LM: Firefox fails when this the preload="none" for other tags, but it needs to be "none" to ensure PreloadJS works.
tag.src = src;
return tag;
};
createjs.SoundLoader = createjs.promote(SoundLoader, "AbstractMediaLoader");
}());
//##############################################################################
// Sound.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
/**
* The Sound class is the public API for creating sounds, controlling the overall sound levels, and managing plugins.
* All Sound APIs on this class are static.
*
* Registering and Preloading
* Before you can play a sound, it must be registered. You can do this with {{#crossLink "Sound/registerSound"}}{{/crossLink}},
* or register multiple sounds using {{#crossLink "Sound/registerSounds"}}{{/crossLink}}. If you don't register a
* sound prior to attempting to play it using {{#crossLink "Sound/play"}}{{/crossLink}} or create it using {{#crossLink "Sound/createInstance"}}{{/crossLink}},
* the sound source will be automatically registered but playback will fail as the source will not be ready. If you use
* PreloadJS, registration is handled for you when the sound is
* preloaded. It is recommended to preload sounds either internally using the register functions or externally using
* PreloadJS so they are ready when you want to use them.
*
* Playback
* To play a sound once it's been registered and preloaded, use the {{#crossLink "Sound/play"}}{{/crossLink}} method.
* This method returns a {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} which can be paused, resumed, muted, etc.
* Please see the {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} documentation for more on the instance control APIs.
*
* Plugins
* By default, the {{#crossLink "WebAudioPlugin"}}{{/crossLink}} or the {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}}
* are used (when available), although developers can change plugin priority or add new plugins (such as the
* provided {{#crossLink "FlashAudioPlugin"}}{{/crossLink}}). Please see the {{#crossLink "Sound"}}{{/crossLink}} API
* methods for more on the playback and plugin APIs. To install plugins, or specify a different plugin order, see
* {{#crossLink "Sound/installPlugins"}}{{/crossLink}}.
*
* Example
* createjs.Sound.registerPlugins([createjs.WebAudioPlugin, createjs.FlashAudioPlugin]);
* createjs.Sound.alternateExtensions = ["mp3"];
* createjs.Sound.addEventListener("fileload", createjs.proxy(this.loadHandler, (this));
* createjs.Sound.registerSound("path/to/mySound.ogg", "sound");
* function loadHandler(event) {
* // This is fired for each sound that is registered.
* var instance = createjs.Sound.play("sound"); // play using id. Could also use full source path or event.src.
* instance.addEventListener("complete", createjs.proxy(this.handleComplete, this));
* instance.volume = 0.5;
* }
*
* The maximum number of concurrently playing instances of the same sound can be specified in the "data" argument
* of {{#crossLink "Sound/registerSound"}}{{/crossLink}}. Note that if not specified, the active plugin will apply
* a default limit. Currently HTMLAudioPlugin sets a default limit of 2, while WebAudioPlugin and FlashAudioPlugin set a
* default limit of 100.
*
* createjs.Sound.registerSound("sound.mp3", "soundId", 4);
*
* Sound can be used as a plugin with PreloadJS to help preload audio properly. Audio preloaded with PreloadJS is
* automatically registered with the Sound class. When audio is not preloaded, Sound will do an automatic internal
* load. As a result, it may fail to play the first time play is called if the audio is not finished loading. Use the
* {{#crossLink "Sound/fileload"}}{{/crossLink}} event to determine when a sound has finished internally preloading.
* It is recommended that all audio is preloaded before it is played.
*
* var queue = new createjs.LoadQueue();
* queue.installPlugin(createjs.Sound);
*
* Audio Sprites
* SoundJS has added support for Audio Sprites, available as of version 0.6.0.
* For those unfamiliar with audio sprites, they are much like CSS sprites or sprite sheets: multiple audio assets
* grouped into a single file.
*
* Benefits of Audio Sprites
* - More robust support for older browsers and devices that only allow a single audio instance, such as iOS 5.
* - They provide a work around for the Internet Explorer 9 audio tag limit, which until now restricted how many
* different sounds we could load at once.
* - Faster loading by only requiring a single network request for several sounds, especially on mobile devices
* where the network round trip for each file can add significant latency.
*
* Drawbacks of Audio Sprites
* - No guarantee of smooth looping when using HTML or Flash audio. If you have a track that needs to loop
* smoothly and you are supporting non-web audio browsers, do not use audio sprites for that sound if you can avoid it.
* - No guarantee that HTML audio will play back immediately, especially the first time. In some browsers (Chrome!),
* HTML audio will only load enough to play through – so we rely on the “canplaythrough” event to determine if the audio is loaded.
* Since audio sprites must jump ahead to play specific sounds, the audio may not yet have downloaded.
* - Audio sprites share the same core source, so if you have a sprite with 5 sounds and are limited to 2
* concurrently playing instances, that means you can only play 2 of the sounds at the same time.
*
* Example
* createjs.Sound.initializeDefaultPlugins();
* var assetsPath = "./assets/";
* var sounds = [{
* src:"MyAudioSprite.ogg", data: {
* audioSprite: [
* {id:"sound1", startTime:0, duration:500},
* {id:"sound2", startTime:1000, duration:400},
* {id:"sound3", startTime:1700, duration: 1000}
* ]}
* }
* ];
* createjs.Sound.alternateExtensions = ["mp3"];
* createjs.Sound.addEventListener("fileload", loadSound);
* createjs.Sound.registerSounds(sounds, assetsPath);
* // after load is complete
* createjs.Sound.play("sound2");
*
* You can also create audio sprites on the fly by setting the startTime and duration when creating an new AbstractSoundInstance.
*
* createjs.Sound.play("MyAudioSprite", {startTime: 1000, duration: 400});
*
* Mobile Safe Approach
* Mobile devices require sounds to be played inside of a user initiated event (touch/click) in varying degrees.
* As of SoundJS 0.4.1, you can launch a site inside of a user initiated event and have audio playback work. To
* enable as broadly as possible, the site needs to setup the Sound plugin in its initialization (for example via
* createjs.Sound.initializeDefaultPlugins();), and all sounds need to be played in the scope of the
* application. See the MobileSafe demo for a working example.
*
* Example
* document.getElementById("status").addEventListener("click", handleTouch, false); // works on Android and iPad
* function handleTouch(event) {
* document.getElementById("status").removeEventListener("click", handleTouch, false); // remove the listener
* var thisApp = new myNameSpace.MyApp(); // launch the app
* }
*
* Known Browser and OS issues
* IE 9 HTML Audio limitations
* - There is a delay in applying volume changes to tags that occurs once playback is started. So if you have
* muted all sounds, they will all play during this delay until the mute applies internally. This happens regardless of
* when or how you apply the volume change, as the tag seems to need to play to apply it.
* - MP3 encoding will not always work for audio tags, particularly in Internet Explorer. We've found default
* encoding with 64kbps works.
* - Occasionally very short samples will get cut off.
* - There is a limit to how many audio tags you can load and play at once, which appears to be determined by
* hardware and browser settings. See {{#crossLink "HTMLAudioPlugin.MAX_INSTANCES"}}{{/crossLink}} for a safe estimate.
*
* Firefox 25 Web Audio limitations
* - mp3 audio files do not load properly on all windows machines, reported
* here.
* For this reason it is recommended to pass another FF supported type (ie ogg) first until this bug is resolved, if possible.
* Safari limitations
* - Safari requires Quicktime to be installed for audio playback.
*
* iOS 6 Web Audio limitations
* - Sound is initially muted and will only unmute through play being called inside a user initiated event
* (touch/click).
* - A bug exists that will distort un-cached web audio when a video element is present in the DOM that has audio at a different sampleRate.
* - Note HTMLAudioPlugin is not supported on iOS by default. See {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}}
* for more details.
*
*
* Android HTML Audio limitations
* - We have no control over audio volume. Only the user can set volume on their device.
* - We can only play audio inside a user event (touch/click). This currently means you cannot loop sound or use
* a delay.
*
*
* @class Sound
* @static
* @uses EventDispatcher
*/
function Sound() {
throw "Sound cannot be instantiated";
}
var s = Sound;
// Static Properties
/**
* The interrupt value to interrupt any currently playing instance with the same source, if the maximum number of
* instances of the sound are already playing.
* @property INTERRUPT_ANY
* @type {String}
* @default any
* @static
*/
s.INTERRUPT_ANY = "any";
/**
* The interrupt value to interrupt the earliest currently playing instance with the same source that progressed the
* least distance in the audio track, if the maximum number of instances of the sound are already playing.
* @property INTERRUPT_EARLY
* @type {String}
* @default early
* @static
*/
s.INTERRUPT_EARLY = "early";
/**
* The interrupt value to interrupt the currently playing instance with the same source that progressed the most
* distance in the audio track, if the maximum number of instances of the sound are already playing.
* @property INTERRUPT_LATE
* @type {String}
* @default late
* @static
*/
s.INTERRUPT_LATE = "late";
/**
* The interrupt value to not interrupt any currently playing instances with the same source, if the maximum number of
* instances of the sound are already playing.
* @property INTERRUPT_NONE
* @type {String}
* @default none
* @static
*/
s.INTERRUPT_NONE = "none";
/**
* Defines the playState of an instance that is still initializing.
* @property PLAY_INITED
* @type {String}
* @default playInited
* @static
*/
s.PLAY_INITED = "playInited";
/**
* Defines the playState of an instance that is currently playing or paused.
* @property PLAY_SUCCEEDED
* @type {String}
* @default playSucceeded
* @static
*/
s.PLAY_SUCCEEDED = "playSucceeded";
/**
* Defines the playState of an instance that was interrupted by another instance.
* @property PLAY_INTERRUPTED
* @type {String}
* @default playInterrupted
* @static
*/
s.PLAY_INTERRUPTED = "playInterrupted";
/**
* Defines the playState of an instance that completed playback.
* @property PLAY_FINISHED
* @type {String}
* @default playFinished
* @static
*/
s.PLAY_FINISHED = "playFinished";
/**
* Defines the playState of an instance that failed to play. This is usually caused by a lack of available channels
* when the interrupt mode was "INTERRUPT_NONE", the playback stalled, or the sound could not be found.
* @property PLAY_FAILED
* @type {String}
* @default playFailed
* @static
*/
s.PLAY_FAILED = "playFailed";
/**
* A list of the default supported extensions that Sound will try to play. Plugins will check if the browser
* can play these types, so modifying this list before a plugin is initialized will allow the plugins to try to
* support additional media types.
*
* NOTE this does not currently work for {{#crossLink "FlashAudioPlugin"}}{{/crossLink}}.
*
* More details on file formats can be found at http://en.wikipedia.org/wiki/Audio_file_format.
* A very detailed list of file formats can be found at http://www.fileinfo.com/filetypes/audio.
* @property SUPPORTED_EXTENSIONS
* @type {Array[String]}
* @default ["mp3", "ogg", "mpeg", "wav", "m4a", "mp4", "aiff", "wma", "mid"]
* @since 0.4.0
*/
s.SUPPORTED_EXTENSIONS = ["mp3", "ogg", "mpeg", "wav", "m4a", "mp4", "aiff", "wma", "mid"];
/**
* Some extensions use another type of extension support to play (one of them is a codex). This allows you to map
* that support so plugins can accurately determine if an extension is supported. Adding to this list can help
* plugins determine more accurately if an extension is supported.
*
* A useful list of extensions for each format can be found at http://html5doctor.com/html5-audio-the-state-of-play/.
* @property EXTENSION_MAP
* @type {Object}
* @since 0.4.0
* @default {m4a:"mp4"}
*/
s.EXTENSION_MAP = {
m4a:"mp4"
};
/**
* The RegExp pattern used to parse file URIs. This supports simple file names, as well as full domain URIs with
* query strings. The resulting match is: protocol:$1 domain:$2 path:$3 file:$4 extension:$5 query:$6.
* @property FILE_PATTERN
* @type {RegExp}
* @static
* @protected
*/
s.FILE_PATTERN = /^(?:(\w+:)\/{2}(\w+(?:\.\w+)*\/?))?([/.]*?(?:[^?]+)?\/)?((?:[^/?]+)\.(\w+))(?:\?(\S+)?)?$/;
// Class Public properties
/**
* Determines the default behavior for interrupting other currently playing instances with the same source, if the
* maximum number of instances of the sound are already playing. Currently the default is {{#crossLink "Sound/INTERRUPT_NONE:property"}}{{/crossLink}}
* but this can be set and will change playback behavior accordingly. This is only used when {{#crossLink "Sound/play"}}{{/crossLink}}
* is called without passing a value for interrupt.
* @property defaultInterruptBehavior
* @type {String}
* @default Sound.INTERRUPT_NONE, or "none"
* @static
* @since 0.4.0
*/
s.defaultInterruptBehavior = s.INTERRUPT_NONE; // OJR does s.INTERRUPT_ANY make more sense as default? Needs game dev testing to see which case makes more sense.
/**
* An array of extensions to attempt to use when loading sound, if the default is unsupported by the active plugin.
* These are applied in order, so if you try to Load Thunder.ogg in a browser that does not support ogg, and your
* extensions array is ["mp3", "m4a", "wav"] it will check mp3 support, then m4a, then wav. The audio files need
* to exist in the same location, as only the extension is altered.
*
* Note that regardless of which file is loaded, you can call {{#crossLink "Sound/createInstance"}}{{/crossLink}}
* and {{#crossLink "Sound/play"}}{{/crossLink}} using the same id or full source path passed for loading.
* Example
* var sounds = [
* {src:"myPath/mySound.ogg", id:"example"},
* ];
* createjs.Sound.alternateExtensions = ["mp3"]; // now if ogg is not supported, SoundJS will try asset0.mp3
* createjs.Sound.addEventListener("fileload", handleLoad); // call handleLoad when each sound loads
* createjs.Sound.registerSounds(sounds, assetPath);
* // ...
* createjs.Sound.play("myPath/mySound.ogg"); // works regardless of what extension is supported. Note calling with ID is a better approach
*
* @property alternateExtensions
* @type {Array}
* @since 0.5.2
*/
s.alternateExtensions = [];
/**
* The currently active plugin. If this is null, then no plugin could be initialized. If no plugin was specified,
* Sound attempts to apply the default plugins: {{#crossLink "WebAudioPlugin"}}{{/crossLink}}, followed by
* {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}}.
* @property activePlugin
* @type {Object}
* @static
*/
s.activePlugin = null;
// Class Private properties
/**
* Determines if the plugins have been registered. If false, the first call to play() will instantiate the default
* plugins ({{#crossLink "WebAudioPlugin"}}{{/crossLink}}, followed by {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}}).
* If plugins have been registered, but none are applicable, then sound playback will fail.
* @property _pluginsRegistered
* @type {Boolean}
* @default false
* @static
* @protected
*/
s._pluginsRegistered = false;
/**
* Used internally to assign unique IDs to each AbstractSoundInstance.
* @property _lastID
* @type {Number}
* @static
* @protected
*/
s._lastID = 0;
/**
* The master volume value, which affects all sounds. Use {{#crossLink "Sound/getVolume"}}{{/crossLink}} and
* {{#crossLink "Sound/setVolume"}}{{/crossLink}} to modify the volume of all audio.
* @property _masterVolume
* @type {Number}
* @default 1
* @protected
* @since 0.4.0
*/
s._masterVolume = 1;
/**
* The master mute value, which affects all sounds. This is applies to all sound instances. This value can be set
* through {{#crossLink "Sound/setMute"}}{{/crossLink}} and accessed via {{#crossLink "Sound/getMute"}}{{/crossLink}}.
* @property _masterMute
* @type {Boolean}
* @default false
* @protected
* @static
* @since 0.4.0
*/
s._masterMute = false;
/**
* An array containing all currently playing instances. This allows Sound to control the volume, mute, and playback of
* all instances when using static APIs like {{#crossLink "Sound/stop"}}{{/crossLink}} and {{#crossLink "Sound/setVolume"}}{{/crossLink}}.
* When an instance has finished playback, it gets removed via the {{#crossLink "Sound/finishedPlaying"}}{{/crossLink}}
* method. If the user replays an instance, it gets added back in via the {{#crossLink "Sound/_beginPlaying"}}{{/crossLink}}
* method.
* @property _instances
* @type {Array}
* @protected
* @static
*/
s._instances = [];
/**
* An object hash storing objects with sound sources, startTime, and duration via there corresponding ID.
* @property _idHash
* @type {Object}
* @protected
* @static
*/
s._idHash = {};
/**
* An object hash that stores preloading sound sources via the parsed source that is passed to the plugin. Contains the
* source, id, and data that was passed in by the user. Parsed sources can contain multiple instances of source, id,
* and data.
* @property _preloadHash
* @type {Object}
* @protected
* @static
*/
s._preloadHash = {};
// EventDispatcher methods:
s.addEventListener = null;
s.removeEventListener = null;
s.removeAllEventListeners = null;
s.dispatchEvent = null;
s.hasEventListener = null;
s._listeners = null;
createjs.EventDispatcher.initialize(s); // inject EventDispatcher methods.
// Events
/**
* This event is fired when a file finishes loading internally. This event is fired for each loaded sound,
* so any handler methods should look up the event.src to handle a particular sound.
* @event fileload
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @param {String} src The source of the sound that was loaded.
* @param {String} [id] The id passed in when the sound was registered. If one was not provided, it will be null.
* @param {Number|Object} [data] Any additional data associated with the item. If not provided, it will be undefined.
* @since 0.4.1
*/
/**
* This event is fired when a file fails loading internally. This event is fired for each loaded sound,
* so any handler methods should look up the event.src to handle a particular sound.
* @event fileerror
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @param {String} src The source of the sound that was loaded.
* @param {String} [id] The id passed in when the sound was registered. If one was not provided, it will be null.
* @param {Number|Object} [data] Any additional data associated with the item. If not provided, it will be undefined.
* @since 0.6.0
*/
// Class Public Methods
/**
* Get the preload rules to allow Sound to be used as a plugin by PreloadJS.
* Any load calls that have the matching type or extension will fire the callback method, and use the resulting
* object, which is potentially modified by Sound. This helps when determining the correct path, as well as
* registering the audio instance(s) with Sound. This method should not be called, except by PreloadJS.
* @method getPreloadHandlers
* @return {Object} An object containing:
* - callback: A preload callback that is fired when a file is added to PreloadJS, which provides
* Sound a mechanism to modify the load parameters, select the correct file format, register the sound, etc.
* - types: A list of file types that are supported by Sound (currently supports "sound").
* - extensions: A list of file extensions that are supported by Sound (see {{#crossLink "Sound.SUPPORTED_EXTENSIONS"}}{{/crossLink}}).
* @static
* @protected
*/
s.getPreloadHandlers = function () {
return {
callback:createjs.proxy(s.initLoad, s),
types:["sound"],
extensions:s.SUPPORTED_EXTENSIONS
};
};
/**
* Used to dispatch fileload events from internal loading.
* @method _handleLoadComplete
* @param event A loader event.
* @protected
* @static
* @since 0.6.0
*/
s._handleLoadComplete = function(event) {
var src = event.target.getItem().src;
if (!s._preloadHash[src]) {return;}
for (var i = 0, l = s._preloadHash[src].length; i < l; i++) {
var item = s._preloadHash[src][i];
s._preloadHash[src][i] = true;
if (!s.hasEventListener("fileload")) { continue; }
var event = new createjs.Event("fileload");
event.src = item.src;
event.id = item.id;
event.data = item.data;
event.sprite = item.sprite;
s.dispatchEvent(event);
}
};
/**
* Used to dispatch error events from internal preloading.
* @param event
* @protected
* @since 0.6.0
*/
s._handleLoadError = function(event) {
var src = event.target.getItem().src;
if (!s._preloadHash[src]) {return;}
for (var i = 0, l = s._preloadHash[src].length; i < l; i++) {
var item = s._preloadHash[src][i];
s._preloadHash[src][i] = false;
if (!s.hasEventListener("fileerror")) { continue; }
var event = new createjs.Event("fileerror");
event.src = item.src;
event.id = item.id;
event.data = item.data;
event.sprite = item.sprite;
s.dispatchEvent(event);
}
};
/**
* Used by {{#crossLink "Sound/registerPlugins"}}{{/crossLink}} to register a Sound plugin.
*
* @method _registerPlugin
* @param {Object} plugin The plugin class to install.
* @return {Boolean} Whether the plugin was successfully initialized.
* @static
* @private
*/
s._registerPlugin = function (plugin) {
// Note: Each plugin is passed in as a class reference, but we store the activePlugin as an instance
if (plugin.isSupported()) {
s.activePlugin = new plugin();
return true;
}
return false;
};
/**
* Register a list of Sound plugins, in order of precedence. To register a single plugin, pass a single element in the array.
*
* Example
* createjs.FlashAudioPlugin.swfPath = "../src/soundjs/flashaudio/";
* createjs.Sound.registerPlugins([createjs.WebAudioPlugin, createjs.HTMLAudioPlugin, createjs.FlashAudioPlugin]);
*
* @method registerPlugins
* @param {Array} plugins An array of plugins classes to install.
* @return {Boolean} Whether a plugin was successfully initialized.
* @static
*/
s.registerPlugins = function (plugins) {
s._pluginsRegistered = true;
for (var i = 0, l = plugins.length; i < l; i++) {
if (s._registerPlugin(plugins[i])) {
return true;
}
}
return false;
};
/**
* Initialize the default plugins. This method is automatically called when any audio is played or registered before
* the user has manually registered plugins, and enables Sound to work without manual plugin setup. Currently, the
* default plugins are {{#crossLink "WebAudioPlugin"}}{{/crossLink}} followed by {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}}.
*
* Example
* if (!createjs.initializeDefaultPlugins()) { return; }
*
* @method initializeDefaultPlugins
* @returns {Boolean} True if a plugin was initialized, false otherwise.
* @since 0.4.0
*/
s.initializeDefaultPlugins = function () {
if (s.activePlugin != null) {return true;}
if (s._pluginsRegistered) {return false;}
if (s.registerPlugins([createjs.WebAudioPlugin, createjs.HTMLAudioPlugin])) {return true;}
return false;
};
/**
* Determines if Sound has been initialized, and a plugin has been activated.
*
* Example
* This example sets up a Flash fallback, but only if there is no plugin specified yet.
*
* if (!createjs.Sound.isReady()) {
* createjs.FlashAudioPlugin.swfPath = "../src/soundjs/flashaudio/";
* createjs.Sound.registerPlugins([createjs.WebAudioPlugin, createjs.HTMLAudioPlugin, createjs.FlashAudioPlugin]);
* }
*
* @method isReady
* @return {Boolean} If Sound has initialized a plugin.
* @static
*/
s.isReady = function () {
return (s.activePlugin != null);
};
/**
* Get the active plugins capabilities, which help determine if a plugin can be used in the current environment,
* or if the plugin supports a specific feature. Capabilities include:
*
* - panning: If the plugin can pan audio from left to right
* - volume; If the plugin can control audio volume.
* - tracks: The maximum number of audio tracks that can be played back at a time. This will be -1
* if there is no known limit.
*
An entry for each file type in {{#crossLink "Sound/SUPPORTED_EXTENSIONS:property"}}{{/crossLink}}:
* - mp3: If MP3 audio is supported.
* - ogg: If OGG audio is supported.
* - wav: If WAV audio is supported.
* - mpeg: If MPEG audio is supported.
* - m4a: If M4A audio is supported.
* - mp4: If MP4 audio is supported.
* - aiff: If aiff audio is supported.
* - wma: If wma audio is supported.
* - mid: If mid audio is supported.
*
* @method getCapabilities
* @return {Object} An object containing the capabilities of the active plugin.
* @static
*/
s.getCapabilities = function () {
if (s.activePlugin == null) {return null;}
return s.activePlugin._capabilities;
};
/**
* Get a specific capability of the active plugin. See {{#crossLink "Sound/getCapabilities"}}{{/crossLink}} for a
* full list of capabilities.
*
* Example
* var maxAudioInstances = createjs.Sound.getCapability("tracks");
*
* @method getCapability
* @param {String} key The capability to retrieve
* @return {Number|Boolean} The value of the capability.
* @static
* @see getCapabilities
*/
s.getCapability = function (key) {
if (s.activePlugin == null) {return null;}
return s.activePlugin._capabilities[key];
};
/**
* Process manifest items from PreloadJS. This method is intended
* for usage by a plugin, and not for direct interaction.
* @method initLoad
* @param {String | Object} src The src or object to load. This is usually a string path, but can also be an
* HTMLAudioElement or similar audio playback object.
* @param {String} [type] The type of object. Will likely be "sound" or null.
* @param {String} [id] An optional user-specified id that is used to play sounds.
* @param {Number|String|Boolean|Object} [data] Data associated with the item. Sound uses the data parameter as the
* number of channels for an audio instance, however a "channels" property can be appended to the data object if
* this property is used for other information. The audio channels will set a default based on plugin if no value is found.
* @return {Boolean|Object} An object with the modified values of those that were passed in, or false if the active
* plugin can not play the audio type.
* @protected
* @static
*/
s.initLoad = function (src, type, id, data) {
return s._registerSound(src, id, data);
};
/**
* Internal method for loading sounds. This should not be called directly.
*
* @method _registerSound
* @param {String | Object} src The source to load.
* @param {String} [id] An id specified by the user to play the sound later.
* @param {Number | Object} [data] Data associated with the item. Sound uses the data parameter as the number of
* channels for an audio instance, however a "channels" property can be appended to the data object if it is used
* for other information. The audio channels will set a default based on plugin if no value is found.
* Sound also uses the data property to hold an audioSprite array of objects in the following format {id, startTime, duration}.
* id used to play the sound later, in the same manner as a sound src with an id.
* startTime is the initial offset to start playback and loop from, in milliseconds.
* duration is the amount of time to play the clip for, in milliseconds.
* This allows Sound to support audio sprites that are played back by id.
* @return {Object} An object with the modified values that were passed in, which defines the sound.
* Returns false if the source cannot be parsed or no plugins can be initialized.
* Returns true if the source is already loaded.
* @static
* @private
* @since 0.6.0
*/
s._registerSound = function (src, id, data) {
if (!s.initializeDefaultPlugins()) {return false;}
var details = s._parsePath(src);
if (details == null) {return false;}
details.type = "sound";
details.id = id;
details.data = data;
var numChannels = s.activePlugin.defaultNumChannels || null;
if (data != null) {
if (!isNaN(data.channels)) {
numChannels = parseInt(data.channels);
} else if (!isNaN(data)) {
numChannels = parseInt(data);
}
if(data.audioSprite) {
var sp;
for(var i = data.audioSprite.length; i--; ) {
sp = data.audioSprite[i];
s._idHash[sp.id] = {src: details.src, startTime: parseInt(sp.startTime), duration: parseInt(sp.duration)};
}
}
}
if (id != null) {s._idHash[id] = {src: details.src}};
var loader = s.activePlugin.register(details.src, numChannels); // Note only HTML audio uses numChannels
SoundChannel.create(details.src, numChannels);
// return the number of instances to the user. This will also be returned in the load event.
if (data == null || !isNaN(data)) {
details.data = numChannels || SoundChannel.maxPerChannel();
} else {
details.data.channels = numChannels || SoundChannel.maxPerChannel();
}
details.loader = loader;
if (loader.onload) {details.completeHandler = loader.onload;} // used by preloadJS
if (loader.type) {details.type = loader.type;}
return details;
};
/**
* Register an audio file for loading and future playback in Sound. This is automatically called when using
* PreloadJS. It is recommended to register all sounds that
* need to be played back in order to properly prepare and preload them. Sound does internal preloading when required.
*
* Example
* createjs.Sound.alternateExtensions = ["mp3"];
* createjs.Sound.addEventListener("fileload", handleLoad); // add an event listener for when load is completed
* createjs.Sound.registerSound("myAudioPath/mySound.ogg", "myID", 3);
*
* @method registerSound
* @param {String | Object} src The source or an Object with a "src" property
* @param {String} [id] An id specified by the user to play the sound later.
* @param {Number | Object} [data] Data associated with the item. Sound uses the data parameter as the number of
* channels for an audio instance, however a "channels" property can be appended to the data object if it is used
* for other information. The audio channels will set a default based on plugin if no value is found.
* Sound also uses the data property to hold an audioSprite array of objects in the following format {id, startTime, duration}.
* id used to play the sound later, in the same manner as a sound src with an id.
* startTime is the initial offset to start playback and loop from, in milliseconds.
* duration is the amount of time to play the clip for, in milliseconds.
* This allows Sound to support audio sprites that are played back by id.
* @param {string} basePath Set a path that will be prepended to src for loading.
* @return {Object} An object with the modified values that were passed in, which defines the sound.
* Returns false if the source cannot be parsed or no plugins can be initialized.
* Returns true if the source is already loaded.
* @static
* @since 0.4.0
*/
s.registerSound = function (src, id, data, basePath) {
if (src instanceof Object) {
basePath = id;
id = src.id;
data = src.data;
src = src.src;
}
if (basePath != null) {src = basePath + src;}
var details = s._registerSound(src, id, data);
if(!details) {return false;}
if (!s._preloadHash[details.src]) { s._preloadHash[details.src] = [];}
s._preloadHash[details.src].push({src:src, id:id, data:details.data});
if (s._preloadHash[details.src].length == 1) {
// OJR note this will disallow reloading a sound if loading fails or the source changes
var loader = details.loader;
loader.on("complete", createjs.proxy(this._handleLoadComplete, this));
loader.on("error", createjs.proxy(this._handleLoadError, this));
s.activePlugin.preload(details.loader);
} else {
if (s._preloadHash[details.src][0] == true) {return true;}
}
return details;
};
/**
* Register an array of audio files for loading and future playback in Sound. It is recommended to register all
* sounds that need to be played back in order to properly prepare and preload them. Sound does internal preloading
* when required.
*
* Example
* var sounds = [
* {src:"asset0.ogg", id:"example"},
* {src:"asset1.ogg", id:"1", data:6},
* {src:"asset2.mp3", id:"works"}
* ];
* createjs.Sound.alternateExtensions = ["mp3"]; // if the passed extension is not supported, try this extension
* createjs.Sound.addEventListener("fileload", handleLoad); // call handleLoad when each sound loads
* createjs.Sound.registerSounds(sounds, assetPath);
*
* @method registerSounds
* @param {Array} sounds An array of objects to load. Objects are expected to be in the format needed for
* {{#crossLink "Sound/registerSound"}}{{/crossLink}}: {src:srcURI, id:ID, data:Data}
* with "id" and "data" being optional. You can also set an optional path property that will be prepended to the src of each object.
* @param {string} basePath Set a path that will be prepended to each src when loading. When creating, playing, or removing
* audio that was loaded with a basePath by src, the basePath must be included.
* @return {Object} An array of objects with the modified values that were passed in, which defines each sound.
* Like registerSound, it will return false for any values when the source cannot be parsed or if no plugins can be initialized.
* Also, it will return true for any values when the source is already loaded.
* @static
* @since 0.6.0
*/
s.registerSounds = function (sounds, basePath) {
var returnValues = [];
if (sounds.path) {
if (!basePath) {
basePath = sounds.path;
} else {
basePath = basePath + sounds.path;
}
}
for (var i = 0, l = sounds.length; i < l; i++) {
returnValues[i] = createjs.Sound.registerSound(sounds[i].src, sounds[i].id, sounds[i].data, basePath);
}
return returnValues;
};
/**
* Deprecated. Please use {{#crossLink "Sound/registerSounds"}}{{/crossLink} instead.
*
* @method registerManifest
* @param {Array} sounds An array of objects to load. Objects are expected to be in the format needed for
* {{#crossLink "Sound/registerSound"}}{{/crossLink}}: {src:srcURI, id:ID, data:Data}
* with "id" and "data" being optional.
* @param {string} basePath Set a path that will be prepended to each src when loading. When creating, playing, or removing
* audio that was loaded with a basePath by src, the basePath must be included.
* @return {Object} An array of objects with the modified values that were passed in, which defines each sound.
* Like registerSound, it will return false for any values when the source cannot be parsed or if no plugins can be initialized.
* Also, it will return true for any values when the source is already loaded.
* @since 0.4.0
* @depreacted
*/
s.registerManifest = function(manifest, basePath) {
try {
console.log("createjs.Sound.registerManifest is deprecated, please use createjs.Sound.registerSounds.")
} catch (error) {
};
return this.registerSounds(manifest, basePath);
};
/**
* Remove a sound that has been registered with {{#crossLink "Sound/registerSound"}}{{/crossLink}} or
* {{#crossLink "Sound/registerSounds"}}{{/crossLink}}.
*
Note this will stop playback on active instances playing this sound before deleting them.
*
Note if you passed in a basePath, you need to pass it or prepend it to the src here.
*
* Example
* createjs.Sound.removeSound("myAudioBasePath/mySound.ogg");
* createjs.Sound.removeSound("myID");
*
* @method removeSound
* @param {String | Object} src The src or ID of the audio, or an Object with a "src" property
* @param {string} basePath Set a path that will be prepended to each src when removing.
* @return {Boolean} True if sound is successfully removed.
* @static
* @since 0.4.1
*/
s.removeSound = function(src, basePath) {
if (s.activePlugin == null) {return false;}
if (src instanceof Object) {src = src.src;}
src = s._getSrcById(src).src;
if (basePath != null) {src = basePath + src;}
var details = s._parsePath(src);
if (details == null) {return false;}
src = details.src;
for(var prop in s._idHash){
if(s._idHash[prop].src == src) {
delete(s._idHash[prop]);
}
}
// clear from SoundChannel, which also stops and deletes all instances
SoundChannel.removeSrc(src);
delete(s._preloadHash[src]);
s.activePlugin.removeSound(src);
return true;
};
/**
* Remove an array of audio files that have been registered with {{#crossLink "Sound/registerSound"}}{{/crossLink}} or
* {{#crossLink "Sound/registerSounds"}}{{/crossLink}}.
*
Note this will stop playback on active instances playing this audio before deleting them.
*
Note if you passed in a basePath, you need to pass it or prepend it to the src here.
*
* Example
* var sounds = [
* {src:"asset0.ogg", id:"example"},
* {src:"asset1.ogg", id:"1", data:6},
* {src:"asset2.mp3", id:"works"}
* ];
* createjs.Sound.removeSounds(sounds, assetPath);
*
* @method removeSounds
* @param {Array} sounds An array of objects to remove. Objects are expected to be in the format needed for
* {{#crossLink "Sound/removeSound"}}{{/crossLink}}: {srcOrID:srcURIorID}.
* You can also set an optional path property that will be prepended to the src of each object.
* @param {string} basePath Set a path that will be prepended to each src when removing.
* @return {Object} An array of Boolean values representing if the sounds with the same array index were
* successfully removed.
* @static
* @since 0.4.1
*/
s.removeSounds = function (sounds, basePath) {
var returnValues = [];
if (sounds.path) {
if (!basePath) {
basePath = sounds.path;
} else {
basePath = basePath + sounds.path;
}
}
for (var i = 0, l = sounds.length; i < l; i++) {
returnValues[i] = createjs.Sound.removeSound(sounds[i].src, basePath);
}
return returnValues;
};
/**
* Deprecated. Please use {{#crossLink "Sound/removeSounds"}}{{/crossLink}} instead.
*
* @method removeManifest
* @param {Array} manifest An array of objects to remove. Objects are expected to be in the format needed for
* {{#crossLink "Sound/removeSound"}}{{/crossLink}}: {srcOrID:srcURIorID}
* @param {string} basePath Set a path that will be prepended to each src when removing.
* @return {Object} An array of Boolean values representing if the sounds with the same array index in manifest was
* successfully removed.
* @static
* @since 0.4.1
* @deprecated
*/
s.removeManifest = function (manifest, basePath) {
try {
console.log("createjs.Sound.removeManifest is deprecated, please use createjs.Sound.removeSounds.");
} catch (error) {
};
return s.removeSounds(manifest, basePath);
};
/**
* Remove all sounds that have been registered with {{#crossLink "Sound/registerSound"}}{{/crossLink}} or
* {{#crossLink "Sound/registerSounds"}}{{/crossLink}}.
*
Note this will stop playback on all active sound instances before deleting them.
*
* Example
* createjs.Sound.removeAllSounds();
*
* @method removeAllSounds
* @static
* @since 0.4.1
*/
s.removeAllSounds = function() {
s._idHash = {};
s._preloadHash = {};
SoundChannel.removeAll();
if (s.activePlugin) {s.activePlugin.removeAllSounds();}
};
/**
* Check if a source has been loaded by internal preloaders. This is necessary to ensure that sounds that are
* not completed preloading will not kick off a new internal preload if they are played.
*
* Example
* var mySound = "assetPath/asset0.ogg";
* if(createjs.Sound.loadComplete(mySound) {
* createjs.Sound.play(mySound);
* }
*
* @method loadComplete
* @param {String} src The src or id that is being loaded.
* @return {Boolean} If the src is already loaded.
* @since 0.4.0
*/
s.loadComplete = function (src) {
if (!s.isReady()) { return false; }
var details = s._parsePath(src);
if (details) {
src = s._getSrcById(details.src).src;
} else {
src = s._getSrcById(src).src;
}
return (s._preloadHash[src][0] == true); // src only loads once, so if it's true for the first it's true for all
};
/**
* Parse the path of a sound. alternate extensions will be attempted in order if the
* current extension is not supported
* @method _parsePath
* @param {String} value The path to an audio source.
* @return {Object} A formatted object that can be registered with the {{#crossLink "Sound/activePlugin:property"}}{{/crossLink}}
* and returned to a preloader like PreloadJS.
* @protected
*/
s._parsePath = function (value) {
if (typeof(value) != "string") {value = value.toString();}
var match = value.match(s.FILE_PATTERN);
if (match == null) {return false;}
var name = match[4];
var ext = match[5];
var c = s.getCapabilities();
var i = 0;
while (!c[ext]) {
ext = s.alternateExtensions[i++];
if (i > s.alternateExtensions.length) { return null;} // no extensions are supported
}
value = value.replace("."+match[5], "."+ext);
var ret = {name:name, src:value, extension:ext};
return ret;
};
/* ---------------
Static API.
--------------- */
/**
* Play a sound and get a {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} to control. If the sound fails to play, a
* AbstractSoundInstance will still be returned, and have a playState of {{#crossLink "Sound/PLAY_FAILED:property"}}{{/crossLink}}.
* Note that even on sounds with failed playback, you may still be able to call AbstractSoundInstance {{#crossLink "AbstractSoundInstance/play"}}{{/crossLink}},
* since the failure could be due to lack of available channels. If the src does not have a supported extension or
* if there is no available plugin, a default AbstractSoundInstance will be returned which will not play any audio, but will not generate errors.
*
* Example
* createjs.Sound.addEventListener("fileload", handleLoad);
* createjs.Sound.registerSound("myAudioPath/mySound.mp3", "myID", 3);
* function handleLoad(event) {
* createjs.Sound.play("myID");
* // we can pass in options we want to set inside of an object, and store off AbstractSoundInstance for controlling
* var myInstance = createjs.Sound.play("myID", {interrupt: createjs.Sound.INTERRUPT_ANY, loop:-1});
* // alternately, we can pass full source path and specify each argument individually
* var myInstance = createjs.Sound.play("myAudioPath/mySound.mp3", createjs.Sound.INTERRUPT_ANY, 0, 0, -1, 1, 0);
* }
*
* NOTE to create an audio sprite that has not already been registered, both startTime and duration need to be set.
* This is only when creating a new audio sprite, not when playing using the id of an already registered audio sprite.
*
* @method play
* @param {String} src The src or ID of the audio.
* @param {String | Object} [interrupt="none"|options] How to interrupt any currently playing instances of audio with the same source,
* if the maximum number of instances of the sound are already playing. Values are defined as INTERRUPT_TYPE
* constants on the Sound class, with the default defined by {{#crossLink "Sound/defaultInterruptBehavior:property"}}{{/crossLink}}.
*
OR
* This parameter can be an object that contains any or all optional properties by name, including: interrupt,
* delay, offset, loop, volume, pan, startTime, and duration (see the above code sample).
* @param {Number} [delay=0] The amount of time to delay the start of audio playback, in milliseconds.
* @param {Number} [offset=0] The offset from the start of the audio to begin playback, in milliseconds.
* @param {Number} [loop=0] How many times the audio loops when it reaches the end of playback. The default is 0 (no
* loops), and -1 can be used for infinite playback.
* @param {Number} [volume=1] The volume of the sound, between 0 and 1. Note that the master volume is applied
* against the individual volume.
* @param {Number} [pan=0] The left-right pan of the sound (if supported), between -1 (left) and 1 (right).
* @param {Number} [startTime=null] To create an audio sprite (with duration), the initial offset to start playback and loop from, in milliseconds.
* @param {Number} [duration=null] To create an audio sprite (with startTime), the amount of time to play the clip for, in milliseconds.
* @return {AbstractSoundInstance} A {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} that can be controlled after it is created.
* @static
*/
s.play = function (src, interrupt, delay, offset, loop, volume, pan, startTime, duration) {
if (interrupt instanceof Object) {
delay = interrupt.delay;
offset = interrupt.offset;
loop = interrupt.loop;
volume = interrupt.volume;
pan = interrupt.pan;
startTime = interrupt.startTime;
duration = interrupt.duration;
interrupt = interrupt.interrupt;
}
var instance = s.createInstance(src, startTime, duration);
var ok = s._playInstance(instance, interrupt, delay, offset, loop, volume, pan);
if (!ok) {instance._playFailed();}
return instance;
};
/**
* Creates a {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} using the passed in src. If the src does not have a
* supported extension or if there is no available plugin, a default AbstractSoundInstance will be returned that can be
* called safely but does nothing.
*
* Example
* var myInstance = null;
* createjs.Sound.addEventListener("fileload", handleLoad);
* createjs.Sound.registerSound("myAudioPath/mySound.mp3", "myID", 3);
* function handleLoad(event) {
* myInstance = createjs.Sound.createInstance("myID");
* // alternately we could call the following
* myInstance = createjs.Sound.createInstance("myAudioPath/mySound.mp3");
* }
*
* NOTE to create an audio sprite that has not already been registered, both startTime and duration need to be set.
* This is only when creating a new audio sprite, not when playing using the id of an already registered audio sprite.
*
* @method createInstance
* @param {String} src The src or ID of the audio.
* @param {Number} [startTime=null] To create an audio sprite (with duration), the initial offset to start playback and loop from, in milliseconds.
* @param {Number} [duration=null] To create an audio sprite (with startTime), the amount of time to play the clip for, in milliseconds.
* @return {AbstractSoundInstance} A {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} that can be controlled after it is created.
* Unsupported extensions will return the default AbstractSoundInstance.
* @since 0.4.0
*/
s.createInstance = function (src, startTime, duration) {
if (!s.initializeDefaultPlugins()) {return new createjs.DefaultSoundInstance(src, startTime, duration);}
src = s._getSrcById(src);
var details = s._parsePath(src.src);
var instance = null;
if (details != null && details.src != null) {
SoundChannel.create(details.src);
if (startTime == null) {startTime = src.startTime;}
instance = s.activePlugin.create(details.src, startTime, duration || src.duration);
} else {
instance = new createjs.DefaultSoundInstance(src, startTime, duration);;
}
instance.uniqueId = s._lastID++;
return instance;
};
/**
* Set the master volume of Sound. The master volume is multiplied against each sound's individual volume. For
* example, if master volume is 0.5 and a sound's volume is 0.5, the resulting volume is 0.25. To set individual
* sound volume, use AbstractSoundInstance {{#crossLink "AbstractSoundInstance/setVolume"}}{{/crossLink}} instead.
*
* Example
* createjs.Sound.setVolume(0.5);
*
* @method setVolume
* @param {Number} value The master volume value. The acceptable range is 0-1.
* @static
*/
s.setVolume = function (value) {
if (Number(value) == null) {return false;}
value = Math.max(0, Math.min(1, value));
s._masterVolume = value;
if (!this.activePlugin || !this.activePlugin.setVolume || !this.activePlugin.setVolume(value)) {
var instances = this._instances;
for (var i = 0, l = instances.length; i < l; i++) {
instances[i].setMasterVolume(value);
}
}
};
/**
* Get the master volume of Sound. The master volume is multiplied against each sound's individual volume.
* To get individual sound volume, use AbstractSoundInstance {{#crossLink "AbstractSoundInstance/volume:property"}}{{/crossLink}} instead.
*
* Example
* var masterVolume = createjs.Sound.getVolume();
*
* @method getVolume
* @return {Number} The master volume, in a range of 0-1.
* @static
*/
s.getVolume = function () {
return s._masterVolume;
};
/**
* Mute/Unmute all audio. Note that muted audio still plays at 0 volume. This global mute value is maintained
* separately and when set will override, but not change the mute property of individual instances. To mute an individual
* instance, use AbstractSoundInstance {{#crossLink "AbstractSoundInstance/setMute"}}{{/crossLink}} instead.
*
* Example
* createjs.Sound.setMute(true);
*
* @method setMute
* @param {Boolean} value Whether the audio should be muted or not.
* @return {Boolean} If the mute was set.
* @static
* @since 0.4.0
*/
s.setMute = function (value) {
if (value == null) {return false;}
this._masterMute = value;
if (!this.activePlugin || !this.activePlugin.setMute || !this.activePlugin.setMute(value)) {
var instances = this._instances;
for (var i = 0, l = instances.length; i < l; i++) {
instances[i].setMasterMute(value);
}
}
return true;
};
/**
* Returns the global mute value. To get the mute value of an individual instance, use AbstractSoundInstance
* {{#crossLink "AbstractSoundInstance/getMute"}}{{/crossLink}} instead.
*
* Example
* var muted = createjs.Sound.getMute();
*
* @method getMute
* @return {Boolean} The mute value of Sound.
* @static
* @since 0.4.0
*/
s.getMute = function () {
return this._masterMute;
};
/**
* Stop all audio (global stop). Stopped audio is reset, and not paused. To play audio that has been stopped,
* call AbstractSoundInstance {{#crossLink "AbstractSoundInstance/play"}}{{/crossLink}}.
*
* Example
* createjs.Sound.stop();
*
* @method stop
* @static
*/
s.stop = function () {
var instances = this._instances;
for (var i = instances.length; i--; ) {
instances[i].stop(); // NOTE stop removes instance from this._instances
}
};
/* ---------------
Internal methods
--------------- */
/**
* Play an instance. This is called by the static API, as well as from plugins. This allows the core class to
* control delays.
* @method _playInstance
* @param {AbstractSoundInstance} instance The {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} to start playing.
* @param {String | Object} [interrupt="none"|options] How to interrupt any currently playing instances of audio with the same source,
* if the maximum number of instances of the sound are already playing. Values are defined as INTERRUPT_TYPE
* constants on the Sound class, with the default defined by {{#crossLink "Sound/defaultInterruptBehavior"}}{{/crossLink}}.
*
OR
* This parameter can be an object that contains any or all optional properties by name, including: interrupt,
* delay, offset, loop, volume, and pan (see the above code sample).
* @param {Number} [delay=0] Time in milliseconds before playback begins.
* @param {Number} [offset=instance.offset] Time into the sound to begin playback in milliseconds. Defaults to the
* current value on the instance.
* @param {Number} [loop=0] The number of times to loop the audio. Use 0 for no loops, and -1 for an infinite loop.
* @param {Number} [volume] The volume of the sound between 0 and 1. Defaults to current instance value.
* @param {Number} [pan] The pan of the sound between -1 and 1. Defaults to current instance value.
* @return {Boolean} If the sound can start playing. Sounds that fail immediately will return false. Sounds that
* have a delay will return true, but may still fail to play.
* @protected
* @static
*/
s._playInstance = function (instance, interrupt, delay, offset, loop, volume, pan) {
if (interrupt instanceof Object) {
delay = interrupt.delay;
offset = interrupt.offset;
loop = interrupt.loop;
volume = interrupt.volume;
pan = interrupt.pan;
interrupt = interrupt.interrupt;
}
interrupt = interrupt || s.defaultInterruptBehavior;
if (delay == null) {delay = 0;}
if (offset == null) {offset = instance.getPosition();}
if (loop == null) {loop = instance.loop;}
if (volume == null) {volume = instance.volume;}
if (pan == null) {pan = instance.pan;}
if (delay == 0) {
var ok = s._beginPlaying(instance, interrupt, offset, loop, volume, pan);
if (!ok) {return false;}
} else {
//Note that we can't pass arguments to proxy OR setTimeout (IE only), so just wrap the function call.
// OJR WebAudio may want to handle this differently, so it might make sense to move this functionality into the plugins in the future
var delayTimeoutId = setTimeout(function () {
s._beginPlaying(instance, interrupt, offset, loop, volume, pan);
}, delay);
instance.delayTimeoutId = delayTimeoutId;
}
this._instances.push(instance);
return true;
};
/**
* Begin playback. This is called immediately or after delay by {{#crossLink "Sound/playInstance"}}{{/crossLink}}.
* @method _beginPlaying
* @param {AbstractSoundInstance} instance A {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} to begin playback.
* @param {String} [interrupt=none] How this sound interrupts other instances with the same source. Defaults to
* {{#crossLink "Sound/INTERRUPT_NONE:property"}}{{/crossLink}}. Interrupts are defined as INTERRUPT_TYPE
* constants on Sound.
* @param {Number} [offset] Time in milliseconds into the sound to begin playback. Defaults to the current value on
* the instance.
* @param {Number} [loop=0] The number of times to loop the audio. Use 0 for no loops, and -1 for an infinite loop.
* @param {Number} [volume] The volume of the sound between 0 and 1. Defaults to the current value on the instance.
* @param {Number} [pan=instance.pan] The pan of the sound between -1 and 1. Defaults to current instance value.
* @return {Boolean} If the sound can start playing. If there are no available channels, or the instance fails to
* start, this will return false.
* @protected
* @static
*/
s._beginPlaying = function (instance, interrupt, offset, loop, volume, pan) {
if (!SoundChannel.add(instance, interrupt)) {
return false;
}
var result = instance._beginPlaying(offset, loop, volume, pan);
if (!result) {
var index = createjs.indexOf(this._instances, instance);
if (index > -1) {this._instances.splice(index, 1);}
return false;
}
return true;
};
/**
* Get the source of a sound via the ID passed in with a register call. If no ID is found the value is returned
* instead.
* @method _getSrcById
* @param {String} value The ID the sound was registered with.
* @return {String} The source of the sound if it has been registered with this ID or the value that was passed in.
* @protected
* @static
*/
s._getSrcById = function (value) {
return s._idHash[value] || {src: value};
};
/**
* A sound has completed playback, been interrupted, failed, or been stopped. This method removes the instance from
* Sound management. It will be added again, if the sound re-plays. Note that this method is called from the
* instances themselves.
* @method _playFinished
* @param {AbstractSoundInstance} instance The instance that finished playback.
* @protected
* @static
*/
s._playFinished = function (instance) {
SoundChannel.remove(instance);
var index = createjs.indexOf(this._instances, instance);
if (index > -1) {this._instances.splice(index, 1);} // OJR this will always be > -1, there is no way for an instance to exist without being added to this._instances
};
createjs.Sound = Sound;
/**
* An internal class that manages the number of active {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} instances for
* each sound type. This method is only used internally by the {{#crossLink "Sound"}}{{/crossLink}} class.
*
* The number of sounds is artificially limited by Sound in order to prevent over-saturation of a
* single sound, as well as to stay within hardware limitations, although the latter may disappear with better
* browser support.
*
* When a sound is played, this class ensures that there is an available instance, or interrupts an appropriate
* sound that is already playing.
* #class SoundChannel
* @param {String} src The source of the instances
* @param {Number} [max=1] The number of instances allowed
* @constructor
* @protected
*/
function SoundChannel(src, max) {
this.init(src, max);
}
/* ------------
Static API
------------ */
/**
* A hash of channel instances indexed by source.
* #property channels
* @type {Object}
* @static
*/
SoundChannel.channels = {};
/**
* Create a sound channel. Note that if the sound channel already exists, this will fail.
* #method create
* @param {String} src The source for the channel
* @param {Number} max The maximum amount this channel holds. The default is {{#crossLink "SoundChannel.maxDefault"}}{{/crossLink}}.
* @return {Boolean} If the channels were created.
* @static
*/
SoundChannel.create = function (src, max) {
var channel = SoundChannel.get(src);
if (channel == null) {
SoundChannel.channels[src] = new SoundChannel(src, max);
return true;
}
return false;
};
/**
* Delete a sound channel, stop and delete all related instances. Note that if the sound channel does not exist, this will fail.
* #method remove
* @param {String} src The source for the channel
* @return {Boolean} If the channels were deleted.
* @static
*/
SoundChannel.removeSrc = function (src) {
var channel = SoundChannel.get(src);
if (channel == null) {return false;}
channel._removeAll(); // this stops and removes all active instances
delete(SoundChannel.channels[src]);
return true;
};
/**
* Delete all sound channels, stop and delete all related instances.
* #method removeAll
* @static
*/
SoundChannel.removeAll = function () {
for(var channel in SoundChannel.channels) {
SoundChannel.channels[channel]._removeAll(); // this stops and removes all active instances
}
SoundChannel.channels = {};
};
/**
* Add an instance to a sound channel.
* #method add
* @param {AbstractSoundInstance} instance The instance to add to the channel
* @param {String} interrupt The interrupt value to use. Please see the {{#crossLink "Sound/play"}}{{/crossLink}}
* for details on interrupt modes.
* @return {Boolean} The success of the method call. If the channel is full, it will return false.
* @static
*/
SoundChannel.add = function (instance, interrupt) {
var channel = SoundChannel.get(instance.src);
if (channel == null) {return false;}
return channel._add(instance, interrupt);
};
/**
* Remove an instance from the channel.
* #method remove
* @param {AbstractSoundInstance} instance The instance to remove from the channel
* @return The success of the method call. If there is no channel, it will return false.
* @static
*/
SoundChannel.remove = function (instance) {
var channel = SoundChannel.get(instance.src);
if (channel == null) {return false;}
channel._remove(instance);
return true;
};
/**
* Get the maximum number of sounds you can have in a channel.
* #method maxPerChannel
* @return {Number} The maximum number of sounds you can have in a channel.
*/
SoundChannel.maxPerChannel = function () {
return p.maxDefault;
};
/**
* Get a channel instance by its src.
* #method get
* @param {String} src The src to use to look up the channel
* @static
*/
SoundChannel.get = function (src) {
return SoundChannel.channels[src];
};
var p = SoundChannel.prototype;
p.constructor = SoundChannel;
/**
* The source of the channel.
* #property src
* @type {String}
*/
p.src = null;
/**
* The maximum number of instances in this channel. -1 indicates no limit
* #property max
* @type {Number}
*/
p.max = null;
/**
* The default value to set for max, if it isn't passed in. Also used if -1 is passed.
* #property maxDefault
* @type {Number}
* @default 100
* @since 0.4.0
*/
p.maxDefault = 100;
/**
* The current number of active instances.
* #property length
* @type {Number}
*/
p.length = 0;
/**
* Initialize the channel.
* #method init
* @param {String} src The source of the channel
* @param {Number} max The maximum number of instances in the channel
* @protected
*/
p.init = function (src, max) {
this.src = src;
this.max = max || this.maxDefault;
if (this.max == -1) {this.max = this.maxDefault;}
this._instances = [];
};
/**
* Get an instance by index.
* #method get
* @param {Number} index The index to return.
* @return {AbstractSoundInstance} The AbstractSoundInstance at a specific instance.
*/
p._get = function (index) {
return this._instances[index];
};
/**
* Add a new instance to the channel.
* #method add
* @param {AbstractSoundInstance} instance The instance to add.
* @return {Boolean} The success of the method call. If the channel is full, it will return false.
*/
p._add = function (instance, interrupt) {
if (!this._getSlot(interrupt, instance)) {return false;}
this._instances.push(instance);
this.length++;
return true;
};
/**
* Remove an instance from the channel, either when it has finished playing, or it has been interrupted.
* #method remove
* @param {AbstractSoundInstance} instance The instance to remove
* @return {Boolean} The success of the remove call. If the instance is not found in this channel, it will
* return false.
*/
p._remove = function (instance) {
var index = createjs.indexOf(this._instances, instance);
if (index == -1) {return false;}
this._instances.splice(index, 1);
this.length--;
return true;
};
/**
* Stop playback and remove all instances from the channel. Usually in response to a delete call.
* #method removeAll
*/
p._removeAll = function () {
// Note that stop() removes the item from the list
for (var i=this.length-1; i>=0; i--) {
this._instances[i].stop();
}
};
/**
* Get an available slot depending on interrupt value and if slots are available.
* #method getSlot
* @param {String} interrupt The interrupt value to use.
* @param {AbstractSoundInstance} instance The sound instance that will go in the channel if successful.
* @return {Boolean} Determines if there is an available slot. Depending on the interrupt mode, if there are no slots,
* an existing AbstractSoundInstance may be interrupted. If there are no slots, this method returns false.
*/
p._getSlot = function (interrupt, instance) {
var target, replacement;
if (interrupt != Sound.INTERRUPT_NONE) {
// First replacement candidate
replacement = this._get(0);
if (replacement == null) {
return true;
}
}
for (var i = 0, l = this.max; i < l; i++) {
target = this._get(i);
// Available Space
if (target == null) {
return true;
}
// Audio is complete or not playing
if (target.playState == Sound.PLAY_FINISHED ||
target.playState == Sound.PLAY_INTERRUPTED ||
target.playState == Sound.PLAY_FAILED) {
replacement = target;
break;
}
if (interrupt == Sound.INTERRUPT_NONE) {
continue;
}
// Audio is a better candidate than the current target, according to playhead
if ((interrupt == Sound.INTERRUPT_EARLY && target.getPosition() < replacement.getPosition()) ||
(interrupt == Sound.INTERRUPT_LATE && target.getPosition() > replacement.getPosition())) {
replacement = target;
}
}
if (replacement != null) {
replacement._interrupt();
this._remove(replacement);
return true;
}
return false;
};
p.toString = function () {
return "[Sound SoundChannel]";
};
// do not add SoundChannel to namespace
}());
//##############################################################################
// AbstractSoundInstance.js
//##############################################################################
this.createjs = this.createjs || {};
/**
* A AbstractSoundInstance is created when any calls to the Sound API method {{#crossLink "Sound/play"}}{{/crossLink}} or
* {{#crossLink "Sound/createInstance"}}{{/crossLink}} are made. The AbstractSoundInstance is returned by the active plugin
* for control by the user.
*
* Example
* var myInstance = createjs.Sound.play("myAssetPath/mySrcFile.mp3");
*
* A number of additional parameters provide a quick way to determine how a sound is played. Please see the Sound
* API method {{#crossLink "Sound/play"}}{{/crossLink}} for a list of arguments.
*
* Once a AbstractSoundInstance is created, a reference can be stored that can be used to control the audio directly through
* the AbstractSoundInstance. If the reference is not stored, the AbstractSoundInstance will play out its audio (and any loops), and
* is then de-referenced from the {{#crossLink "Sound"}}{{/crossLink}} class so that it can be cleaned up. If audio
* playback has completed, a simple call to the {{#crossLink "AbstractSoundInstance/play"}}{{/crossLink}} instance method
* will rebuild the references the Sound class need to control it.
*
* var myInstance = createjs.Sound.play("myAssetPath/mySrcFile.mp3", {loop:2});
* myInstance.addEventListener("loop", handleLoop);
* function handleLoop(event) {
* myInstance.volume = myInstance.volume * 0.5;
* }
*
* Events are dispatched from the instance to notify when the sound has completed, looped, or when playback fails
*
* var myInstance = createjs.Sound.play("myAssetPath/mySrcFile.mp3");
* myInstance.addEventListener("complete", handleComplete);
* myInstance.addEventListener("loop", handleLoop);
* myInstance.addEventListener("failed", handleFailed);
*
*
* @class AbstractSoundInstance
* @param {String} src The path to and file name of the sound.
* @param {Number} startTime Audio sprite property used to apply an offset, in milliseconds.
* @param {Number} duration Audio sprite property used to set the time the clip plays for, in milliseconds.
* @param {Object} playbackResource Any resource needed by plugin to support audio playback.
* @extends EventDispatcher
* @constructor
*/
(function () {
"use strict";
// Constructor:
var AbstractSoundInstance = function (src, startTime, duration, playbackResource) {
this.EventDispatcher_constructor();
// public properties:
/**
* The source of the sound.
* @property src
* @type {String}
* @default null
*/
this.src = src;
/**
* The unique ID of the instance. This is set by {{#crossLink "Sound"}}{{/crossLink}}.
* @property uniqueId
* @type {String} | Number
* @default -1
*/
this.uniqueId = -1;
/**
* The play state of the sound. Play states are defined as constants on {{#crossLink "Sound"}}{{/crossLink}}.
* @property playState
* @type {String}
* @default null
*/
this.playState = null;
/**
* A Timeout created by {{#crossLink "Sound"}}{{/crossLink}} when this AbstractSoundInstance is played with a delay.
* This allows AbstractSoundInstance to remove the delay if stop, pause, or cleanup are called before playback begins.
* @property delayTimeoutId
* @type {timeoutVariable}
* @default null
* @protected
* @since 0.4.0
*/
this.delayTimeoutId = null;
// TODO consider moving delay into AbstractSoundInstance so it can be handled by plugins
// private properties
/**
* Audio sprite property used to determine the starting offset.
* @type {Number}
* @default null
* @protected
*/
this._startTime = Math.max(0, startTime || 0);
//TODO add a getter / setter for startTime?
// Getter / Setter Properties
// OJR TODO find original reason that we didn't use defined functions. I think it was performance related
/**
* The volume of the sound, between 0 and 1.
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower and Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower. Instead use {{#crossLink "AbstractSoundInstance/setVolume"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/getVolume"}}{{/crossLink}}.
*
* The actual output volume of a sound can be calculated using:
* myInstance.volume * createjs.Sound.getVolume();
*
* @property volume
* @type {Number}
* @default 1
*/
this._volume = 1;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "volume", {
get: this.getVolume,
set: this.setVolume
});
}
/**
* The pan of the sound, between -1 (left) and 1 (right). Note that pan is not supported by HTML Audio.
*
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower, Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower. Instead use {{#crossLink "AbstractSoundInstance/setPan"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/getPan"}}{{/crossLink}}.
*
Note in WebAudioPlugin this only gives us the "x" value of what is actually 3D audio.
*
* @property pan
* @type {Number}
* @default 0
*/
this._pan = 0;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "pan", {
get: this.getPan,
set: this.setPan
});
}
/**
* The length of the audio clip, in milliseconds.
*
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower, Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower. Instead use {{#crossLink "AbstractSoundInstance/setDuration"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/getDuration"}}{{/crossLink}}.
*
* @property duration
* @type {Number}
* @default 0
* @since 0.6.0
*/
this._duration = Math.max(0, duration || 0);
if (createjs.definePropertySupported) {
Object.defineProperty(this, "duration", {
get: this.getDuration,
set: this.setDuration
});
}
/**
* Object that holds plugin specific resource need for audio playback.
* This is set internally by the plugin. For example, WebAudioPlugin will set an array buffer,
* HTMLAudioPlugin will set a tag, FlashAudioPlugin will set a flash reference.
*
* @property playbackResource
* @type {Object}
* @default null
*/
this._playbackResource = null;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "playbackResource", {
get: this.getPlaybackResource,
set: this.setPlaybackResource
});
}
if(playbackResource !== false && playbackResource !== true) { this.setPlaybackResource(playbackResource); }
/**
* The position of the playhead in milliseconds. This can be set while a sound is playing, paused, or stopped.
*
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower, Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower. Instead use {{#crossLink "AbstractSoundInstance/setPosition"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/getPosition"}}{{/crossLink}}.
*
* @property position
* @type {Number}
* @default 0
* @since 0.6.0
*/
this._position = 0;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "position", {
get: this.getPosition,
set: this.setPosition
});
}
/**
* The number of play loops remaining. Negative values will loop infinitely.
*
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower, Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower. Instead use {{#crossLink "AbstractSoundInstance/setLoop"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/getLoop"}}{{/crossLink}}.
*
* @property loop
* @type {Number}
* @default 0
* @public
* @since 0.6.0
*/
this._loop = 0;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "loop", {
get: this.getLoop,
set: this.setLoop
});
}
/**
* Determines if the audio is currently muted.
*
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower, Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower. Instead use {{#crossLink "AbstractSoundInstance/setMute"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/getMute"}}{{/crossLink}}.
*
* @property muted
* @type {Boolean}
* @default false
* @since 0.6.0
*/
this._muted = false;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "muted", {
get: this.getMuted,
set: this.setMuted
});
}
/**
* Tells you if the audio is currently paused.
*
*
Note this uses a getter setter, which is not supported by Firefox versions 3.6 or lower, Opera versions 11.50 or lower,
* and Internet Explorer 8 or lower.
* Use {{#crossLink "AbstractSoundInstance/pause:method"}}{{/crossLink}} and {{#crossLink "AbstractSoundInstance/resume:method"}}{{/crossLink}} to set.
*
* @property paused
* @type {Boolean}
*/
this._paused = false;
if (createjs.definePropertySupported) {
Object.defineProperty(this, "paused", {
get: this.getPaused,
set: this.setPaused
});
}
// Events
/**
* The event that is fired when playback has started successfully.
* @event succeeded
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.4.0
*/
/**
* The event that is fired when playback is interrupted. This happens when another sound with the same
* src property is played using an interrupt value that causes this instance to stop playing.
* @event interrupted
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.4.0
*/
/**
* The event that is fired when playback has failed. This happens when there are too many channels with the same
* src property already playing (and the interrupt value doesn't cause an interrupt of another instance), or
* the sound could not be played, perhaps due to a 404 error.
* @event failed
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.4.0
*/
/**
* The event that is fired when a sound has completed playing but has loops remaining.
* @event loop
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.4.0
*/
/**
* The event that is fired when playback completes. This means that the sound has finished playing in its
* entirety, including its loop iterations.
* @event complete
* @param {Object} target The object that dispatched the event.
* @param {String} type The event type.
* @since 0.4.0
*/
};
var p = createjs.extend(AbstractSoundInstance, createjs.EventDispatcher);
// Public Methods:
/**
* Play an instance. This method is intended to be called on SoundInstances that already exist (created
* with the Sound API {{#crossLink "Sound/createInstance"}}{{/crossLink}} or {{#crossLink "Sound/play"}}{{/crossLink}}).
*
* Example
* var myInstance = createjs.Sound.createInstance(mySrc);
* myInstance.play({offset:1, loop:2, pan:0.5}); // options as object properties
* myInstance.play(createjs.Sound.INTERRUPT_ANY); // options as parameters
*
* Note that if this sound is already playing, this call will do nothing.
*
* @method play
* @param {String | Object} [interrupt="none"|options] How to interrupt any currently playing instances of audio with the same source,
* if the maximum number of instances of the sound are already playing. Values are defined as INTERRUPT_TYPE
* constants on the Sound class, with the default defined by Sound {{#crossLink "Sound/defaultInterruptBehavior:property"}}{{/crossLink}}.
*
OR
* This parameter can be an object that contains any or all optional properties by name, including: interrupt,
* delay, offset, loop, volume, and pan (see the above code sample).
* @param {Number} [delay=0] The delay in milliseconds before the sound starts
* @param {Number} [offset=0] How far into the sound to begin playback, in milliseconds.
* @param {Number} [loop=0] The number of times to loop the audio. Use -1 for infinite loops.
* @param {Number} [volume=1] The volume of the sound, between 0 and 1.
* @param {Number} [pan=0] The pan of the sound between -1 (left) and 1 (right). Note that pan is not supported
* for HTML Audio.
* @return {AbstractSoundInstance} A reference to itself, intended for chaining calls.
*/
p.play = function (interrupt, delay, offset, loop, volume, pan) {
if (this.playState == createjs.Sound.PLAY_SUCCEEDED) {
if (interrupt instanceof Object) {
offset = interrupt.offset;
loop = interrupt.loop;
volume = interrupt.volume;
pan = interrupt.pan;
}
if (offset != null) { this.setPosition(offset) }
if (loop != null) { this.setLoop(loop); }
if (volume != null) { this.setVolume(volume); }
if (pan != null) { this.setPan(pan); }
if (this._paused) { this.setPaused(false); }
return;
}
this._cleanUp();
createjs.Sound._playInstance(this, interrupt, delay, offset, loop, volume, pan); // make this an event dispatch??
return this;
};
/**
* Deprecated, please use {{#crossLink "AbstractSoundInstance/paused:property"}}{{/crossLink}} instead.
*
* @method pause
* @return {Boolean} If the pause call succeeds. This will return false if the sound isn't currently playing.
* @deprecated
*/
p.pause = function () {
if (this._paused || this.playState != createjs.Sound.PLAY_SUCCEEDED) {return false;}
this.setPaused(true);
return true;
};
/**
* Deprecated, please use {{#crossLink "AbstractSoundInstance/paused:property"}}{{/crossLink}} instead.
*
* @method resume
* @return {Boolean} If the resume call succeeds. This will return false if called on a sound that is not paused.
* @deprecated
*/
p.resume = function () {
if (!this._paused) {return false;}
this.setPaused(false);
return true;
};
/**
* Stop playback of the instance. Stopped sounds will reset their position to 0, and calls to {{#crossLink "AbstractSoundInstance/resume"}}{{/crossLink}}
* will fail. To start playback again, call {{#crossLink "AbstractSoundInstance/play"}}{{/crossLink}}.
*
* Example
*
* myInstance.stop();
*
* @method stop
* @return {AbstractSoundInstance} A reference to itself, intended for chaining calls.
*/
p.stop = function () {
this._position = 0;
this._paused = false;
this._handleStop();
this._cleanUp();
this.playState = createjs.Sound.PLAY_FINISHED;
return this;
};
/**
* Remove all external references and resources from AbstractSoundInstance. Note this is irreversible and AbstractSoundInstance will no longer work
* @method destroy
* @since 0.6.0
*/
p.destroy = function() {
this._cleanUp();
this.src = null;
this.playbackResource = null;
this.removeAllEventListeners();
};
p.toString = function () {
return "[AbstractSoundInstance]";
};
// get/set methods that allow support for IE8
/**
* NOTE {{#crossLink "AbstractSoundInstance/paused:property"}}{{/crossLink}} can be accessed directly as a property,
* and getPaused remains to allow support for IE8 with FlashAudioPlugin.
*
* Returns true if the instance is currently paused.
*
* @method getPaused
* @returns {boolean} If the instance is currently paused
* @since 0.6.0
*/
p.getPaused = function() {
return this._paused;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/paused:property"}}{{/crossLink}} can be accessed directly as a property,
* setPaused remains to allow support for IE8 with FlashAudioPlugin.
*
* Pause or resume the instance. Note you can also resume playback with {{#crossLink "AbstractSoundInstance/play"}}{{/crossLink}}.
*
* @param {boolean} value
* @since 0.6.0
* @return {AbstractSoundInstance} A reference to itself, intended for chaining calls.
*/
p.setPaused = function (value) {
if ((value !== true && value !== false) || this._paused == value) {return;}
if (value == true && this.playState != createjs.Sound.PLAY_SUCCEEDED) {return;}
this._paused = value;
if(value) {
this._pause();
} else {
this._resume();
}
clearTimeout(this.delayTimeoutId);
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/volume:property"}}{{/crossLink}} can be accessed directly as a property,
* setVolume remains to allow support for IE8 with FlashAudioPlugin.
*
* Set the volume of the instance.
*
* Example
* myInstance.setVolume(0.5);
*
* Note that the master volume set using the Sound API method {{#crossLink "Sound/setVolume"}}{{/crossLink}}
* will be applied to the instance volume.
*
* @method setVolume
* @param value The volume to set, between 0 and 1.
* @return {AbstractSoundInstance} A reference to itself, intended for chaining calls.
*/
p.setVolume = function (value) {
if (value == this._volume) { return this; }
this._volume = Math.max(0, Math.min(1, value));
if (!this._muted) {
this._updateVolume();
}
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/volume:property"}}{{/crossLink}} can be accessed directly as a property,
* getVolume remains to allow support for IE8 with FlashAudioPlugin.
*
* Get the volume of the instance. The actual output volume of a sound can be calculated using:
* myInstance.getVolume() * createjs.Sound.getVolume();
*
* @method getVolume
* @return The current volume of the sound instance.
*/
p.getVolume = function () {
return this._volume;
};
/**
* Deprecated, please use {{#crossLink "AbstractSoundInstance/muted:property"}}{{/crossLink}} instead.
*
* @method setMute
* @param {Boolean} value If the sound should be muted.
* @return {Boolean} If the mute call succeeds.
* @deprecated
*/
p.setMute = function (value) {
this.setMuted(value);
};
/**
* Deprecated, please use {{#crossLink "AbstractSoundInstance/muted:property"}}{{/crossLink}} instead.
*
* @method getMute
* @return {Boolean} If the sound is muted.
* @deprecated
*/
p.getMute = function () {
return this._muted;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/muted:property"}}{{/crossLink}} can be accessed directly as a property,
* setMuted exists to allow support for IE8 with FlashAudioPlugin.
*
* Mute and unmute the sound. Muted sounds will still play at 0 volume. Note that an unmuted sound may still be
* silent depending on {{#crossLink "Sound"}}{{/crossLink}} volume, instance volume, and Sound muted.
*
* Example
* myInstance.setMuted(true);
*
* @method setMute
* @param {Boolean} value If the sound should be muted.
* @return {AbstractSoundInstance} A reference to itself, intended for chaining calls.
* @since 0.6.0
*/
p.setMuted = function (value) {
if (value !== true && value !== false) {return;}
this._muted = value;
this._updateVolume();
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/muted:property"}}{{/crossLink}} can be accessed directly as a property,
* getMuted remains to allow support for IE8 with FlashAudioPlugin.
*
* Get the mute value of the instance.
*
* Example
* var isMuted = myInstance.getMuted();
*
* @method getMute
* @return {Boolean} If the sound is muted.
* @since 0.6.0
*/
p.getMuted = function () {
return this._muted;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/pan:property"}}{{/crossLink}} can be accessed directly as a property,
* getPan remains to allow support for IE8 with FlashAudioPlugin.
*
* Set the left(-1)/right(+1) pan of the instance. Note that {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}} does not
* support panning, and only simple left/right panning has been implemented for {{#crossLink "WebAudioPlugin"}}{{/crossLink}}.
* The default pan value is 0 (center).
*
* Example
*
* myInstance.setPan(-1); // to the left!
*
* @method setPan
* @param {Number} value The pan value, between -1 (left) and 1 (right).
* @return {AbstractSoundInstance} Returns reference to itself for chaining calls
*/
p.setPan = function (value) {
if(value == this._pan) { return this; }
this._pan = Math.max(-1, Math.min(1, value));
this._updatePan();
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/pan:property"}}{{/crossLink}} can be accessed directly as a property,
* getPan remains to allow support for IE8 with FlashAudioPlugin.
*
* Get the left/right pan of the instance. Note in WebAudioPlugin this only gives us the "x" value of what is
* actually 3D audio.
*
* Example
*
* var myPan = myInstance.getPan();
*
* @method getPan
* @return {Number} The value of the pan, between -1 (left) and 1 (right).
*/
p.getPan = function () {
return this._pan;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/position:property"}}{{/crossLink}} can be accessed directly as a property,
* getPosition remains to allow support for IE8 with FlashAudioPlugin.
*
* Get the position of the playhead of the instance in milliseconds.
*
* Example
* var currentOffset = myInstance.getPosition();
*
* @method getPosition
* @return {Number} The position of the playhead in the sound, in milliseconds.
*/
p.getPosition = function () {
if (!this._paused && this.playState == createjs.Sound.PLAY_SUCCEEDED) {
return this._calculateCurrentPosition(); // sets this._position
}
return this._position;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/position:property"}}{{/crossLink}} can be accessed directly as a property,
* setPosition remains to allow support for IE8 with FlashAudioPlugin.
*
* Set the position of the playhead in the instance. This can be set while a sound is playing, paused, or
* stopped.
*
* Example
* myInstance.setPosition(myInstance.getDuration()/2); // set audio to its halfway point.
*
* @method setPosition
* @param {Number} value The position to place the playhead, in milliseconds.
* @return {AbstractSoundInstance} Returns reference to itself for chaining calls
*/
p.setPosition = function (value) {
this._position = Math.max(0, value);
if (this.playState == createjs.Sound.PLAY_SUCCEEDED) {
this._updatePosition();
}
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/duration:property"}}{{/crossLink}} can be accessed directly as a property,
* getDuration exists to allow support for IE8 with FlashAudioPlugin.
*
* Get the duration of the instance, in milliseconds.
* Note a sound needs to be loaded before it will have duration, unless it was set manually to create an audio sprite.
*
* Example
* var soundDur = myInstance.getDuration();
*
* @method getDuration
* @return {Number} The duration of the sound instance in milliseconds.
*/
p.getDuration = function () {
return this._duration;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/duration:property"}}{{/crossLink}} can be accessed directly as a property,
* setDuration exists to allow support for IE8 with FlashAudioPlugin.
*
* Set the duration of the audio. Generally this is not called, but it can be used to create an audio sprite out of an existing AbstractSoundInstance.
*
* @method setDuration
* @param {number} value The new duration time in milli seconds.
* @return {AbstractSoundInstance} Returns reference to itself for chaining calls
* @since 0.6.0
*/
p.setDuration = function (value) {
if (value == this._duration) { return this; }
this._duration = Math.max(0, value || 0);
this._updateDuration();
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/playbackResource:property"}}{{/crossLink}} can be accessed directly as a property,
* setPlaybackResource exists to allow support for IE8 with FlashAudioPlugin.
*
* An object containing any resources needed for audio playback, set by the plugin.
* Only meant for use by advanced users.
*
* @method setPlayback
* @param {Object} value The new playback resource.
* @return {AbstractSoundInstance} Returns reference to itself for chaining calls
* @since 0.6.0
**/
p.setPlaybackResource = function (value) {
this._playbackResource = value;
if (this._duration == 0) { this._setDurationFromSource(); }
return this;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/playbackResource:property"}}{{/crossLink}} can be accessed directly as a property,
* getPlaybackResource exists to allow support for IE8 with FlashAudioPlugin.
*
* An object containing any resources needed for audio playback, usually set by the plugin.
*
* @method setPlayback
* @param {Object} value The new playback resource.
* @return {Object} playback resource used for playing audio
* @since 0.6.0
**/
p.getPlaybackResource = function () {
return this._playbackResource;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/loop:property"}}{{/crossLink}} can be accessed directly as a property,
* getLoop exists to allow support for IE8 with FlashAudioPlugin.
*
* The number of play loops remaining. Negative values will loop infinitely.
*
* @method getLoop
* @return {number}
* @since 0.6.0
**/
p.getLoop = function () {
return this._loop;
};
/**
* NOTE {{#crossLink "AbstractSoundInstance/loop:property"}}{{/crossLink}} can be accessed directly as a property,
* setLoop exists to allow support for IE8 with FlashAudioPlugin.
*
* Set the number of play loops remaining.
*
* @method setLoop
* @param {number} value The number of times to loop after play.
* @since 0.6.0
*/
p.setLoop = function (value) {
if(this._playbackResource != null) {
// remove looping
if (this._loop != 0 && value == 0) {
this._removeLooping(value);
}
// add looping
if (this._loop == 0 && value != 0) {
this._addLooping(value);
}
}
this._loop = value;
};
// Private Methods:
/**
* A helper method that dispatches all events for AbstractSoundInstance.
* @method _sendEvent
* @param {String} type The event type
* @protected
*/
p._sendEvent = function (type) {
var event = new createjs.Event(type);
this.dispatchEvent(event);
};
/**
* Clean up the instance. Remove references and clean up any additional properties such as timers.
* @method _cleanUp
* @protected
*/
p._cleanUp = function () {
clearTimeout(this.delayTimeoutId); // clear timeout that plays delayed sound
this._handleCleanUp();
this._paused = false;
createjs.Sound._playFinished(this); // TODO change to an event
};
/**
* The sound has been interrupted.
* @method _interrupt
* @protected
*/
p._interrupt = function () {
this._cleanUp();
this.playState = createjs.Sound.PLAY_INTERRUPTED;
this._sendEvent("interrupted");
};
/**
* Called by the Sound class when the audio is ready to play (delay has completed). Starts sound playing if the
* src is loaded, otherwise playback will fail.
* @method _beginPlaying
* @param {Number} offset How far into the sound to begin playback, in milliseconds.
* @param {Number} loop The number of times to loop the audio. Use -1 for infinite loops.
* @param {Number} volume The volume of the sound, between 0 and 1.
* @param {Number} pan The pan of the sound between -1 (left) and 1 (right). Note that pan does not work for HTML Audio.
* @return {Boolean} If playback succeeded.
* @protected
*/
p._beginPlaying = function (offset, loop, volume, pan) {
this.setPosition(offset);
this.setLoop(loop);
this.setVolume(volume);
this.setPan(pan);
if (this._playbackResource != null && this._position < this._duration) {
this._paused = false;
this._handleSoundReady();
this.playState = createjs.Sound.PLAY_SUCCEEDED;
this._sendEvent("succeeded");
return true;
} else {
this._playFailed();
return false;
}
};
/**
* Play has failed, which can happen for a variety of reasons.
* Cleans up instance and dispatches failed event
* @method _playFailed
* @private
*/
p._playFailed = function () {
this._cleanUp();
this.playState = createjs.Sound.PLAY_FAILED;
this._sendEvent("failed");
};
/**
* Audio has finished playing. Manually loop it if required.
* @method _handleSoundComplete
* @param event
* @protected
*/
p._handleSoundComplete = function (event) {
this._position = 0; // have to set this as it can be set by pause during playback
if (this._loop != 0) {
this._loop--; // NOTE this introduces a theoretical limit on loops = float max size x 2 - 1
this._handleLoop();
this._sendEvent("loop");
return;
}
this._cleanUp();
this.playState = createjs.Sound.PLAY_FINISHED;
this._sendEvent("complete");
};
// Plugin specific code
/**
* Handles starting playback when the sound is ready for playing.
* @method _handleSoundReady
* @protected
*/
p._handleSoundReady = function () {
// plugin specific code
};
/**
* Internal function used to update the volume based on the instance volume, master volume, instance mute value,
* and master mute value.
* @method _updateVolume
* @protected
*/
p._updateVolume = function () {
// plugin specific code
};
/**
* Internal function used to update the pan
* @method _updatePan
* @protected
* @since 0.6.0
*/
p._updatePan = function () {
// plugin specific code
};
/**
* Internal function used to update the duration of the audio.
* @method _updateDuration
* @protected
* @since 0.6.0
*/
p._updateDuration = function () {
// plugin specific code
};
/**
* Internal function used to get the duration of the audio from the source we'll be playing.
* @method _updateDuration
* @protected
* @since 0.6.0
*/
p._setDurationFromSource = function () {
// plugin specific code
};
/**
* Internal function that calculates the current position of the playhead and sets it on this._position
* @method _updatePosition
* @protected
* @since 0.6.0
*/
p._calculateCurrentPosition = function () {
// plugin specific code that sets this.position
};
/**
* Internal function used to update the position of the playhead.
* @method _updatePosition
* @protected
* @since 0.6.0
*/
p._updatePosition = function () {
// plugin specific code
};
/**
* Internal function called when looping is removed during playback.
* @method _removeLooping
* @protected
* @since 0.6.0
*/
p._removeLooping = function () {
// plugin specific code
};
/**
* Internal function called when looping is added during playback.
* @method _addLooping
* @protected
* @since 0.6.0
*/
p._addLooping = function () {
// plugin specific code
};
/**
* Internal function called when pausing playback
* @method _pause
* @protected
* @since 0.6.0
*/
p._pause = function () {
// plugin specific code
};
/**
* Internal function called when resuming playback
* @method _resume
* @protected
* @since 0.6.0
*/
p._resume = function () {
// plugin specific code
};
/**
* Internal function called when stopping playback
* @method _handleStop
* @protected
* @since 0.6.0
*/
p._handleStop = function() {
// plugin specific code
};
/**
* Internal function called when AbstractSoundInstance is being cleaned up
* @method _handleCleanUp
* @protected
* @since 0.6.0
*/
p._handleCleanUp = function() {
// plugin specific code
};
/**
* Internal function called when AbstractSoundInstance has played to end and is looping
* @method _handleCleanUp
* @protected
* @since 0.6.0
*/
p._handleLoop = function () {
// plugin specific code
};
createjs.AbstractSoundInstance = createjs.promote(AbstractSoundInstance, "EventDispatcher");
createjs.DefaultSoundInstance = createjs.AbstractSoundInstance; // used when no plugin is supported
}());
//##############################################################################
// AbstractPlugin.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
// constructor:
/**
* A default plugin class used as a base for all other plugins.
* @class AbstractPlugin
* @constructor
* @since 0.6.0
*/
var AbstractPlugin = function () {
// private properties:
/**
* The capabilities of the plugin.
* method and is used internally.
* @property _capabilities
* @type {Object}
* @default null
* @protected
* @static
*/
this._capabilities = null;
/**
* Object hash indexed by the source URI of all created loaders, used to properly destroy them if sources are removed.
* @type {Object}
* @protected
*/
this._loaders = {};
/**
* Object hash indexed by the source URI of each file to indicate if an audio source has begun loading,
* is currently loading, or has completed loading. Can be used to store non boolean data after loading
* is complete (for example arrayBuffers for web audio).
* @property _audioSources
* @type {Object}
* @protected
*/
this._audioSources = {};
/**
* Object hash indexed by the source URI of all created SoundInstances, updates the playbackResource if it loads after they are created,
* and properly destroy them if sources are removed
* @type {Object}
* @protected
*/
this._soundInstances = {};
/**
* A reference to a loader class used by a plugin that must be set.
* @type {Object}
* @protected
*/
this._loaderClass;
/**
* A reference to an AbstractSoundInstance class used by a plugin that must be set.
* @type {Object}
* @protected;
*/
this._soundInstanceClass;
};
var p = AbstractPlugin.prototype;
// Static Properties:
// NOTE THESE PROPERTIES NEED TO BE ADDED TO EACH PLUGIN
/**
* The capabilities of the plugin. This is generated via the {{#crossLink "WebAudioPlugin/_generateCapabilities:method"}}{{/crossLink}}
* method and is used internally.
* @property _capabilities
* @type {Object}
* @default null
* @protected
* @static
*/
AbstractPlugin._capabilities = null;
/**
* Determine if the plugin can be used in the current browser/OS.
* @method isSupported
* @return {Boolean} If the plugin can be initialized.
* @static
*/
AbstractPlugin.isSupported = function () {
return true;
};
// public methods:
/**
* Pre-register a sound for preloading and setup. This is called by {{#crossLink "Sound"}}{{/crossLink}}.
* Note all plugins provide a Loader instance, which PreloadJS
* can use to assist with preloading.
* @method register
* @param {String} src The source of the audio
* @param {Number} instances The number of concurrently playing instances to allow for the channel at any time.
* Note that not every plugin will manage this value.
* @return {Object} A result object, containing a "tag" for preloading purposes.
*/
p.register = function (src, instances) {
this._audioSources[src] = true;
this._soundInstances[src] = [];
if(this._loaders[src]) {return this._loaders[src];} // already loading/loaded this, so don't load twice
// OJR potential issue that we won't be firing loaded event, might need to trigger if this is already loaded?
var loader = new this._loaderClass(src);
loader.on("complete", createjs.proxy(this._handlePreloadComplete, this));
this._loaders[src] = loader;
return loader;
};
// note sound calls register before calling preload
/**
* Internally preload a sound.
* @method preload
* @param {Loader} loader The sound URI to load.
*/
p.preload = function (loader) {
loader.on("error", createjs.proxy(this._handlePreloadError, this));
loader.load();
};
/**
* Checks if preloading has started for a specific source. If the source is found, we can assume it is loading,
* or has already finished loading.
* @method isPreloadStarted
* @param {String} src The sound URI to check.
* @return {Boolean}
*/
p.isPreloadStarted = function (src) {
return (this._audioSources[src] != null);
};
/**
* Checks if preloading has finished for a specific source.
* @method isPreloadComplete
* @param {String} src The sound URI to load.
* @return {Boolean}
*/
p.isPreloadComplete = function (src) {
return (!(this._audioSources[src] == null || this._audioSources[src] == true));
};
/**
* Remove a sound added using {{#crossLink "WebAudioPlugin/register"}}{{/crossLink}}. Note this does not cancel a preload.
* @method removeSound
* @param {String} src The sound URI to unload.
*/
p.removeSound = function (src) {
for (var i = this._soundInstances[src].length; i--; ) {
var item = this._soundInstances[src][i];
item.destroy();
}
delete(this._soundInstances[src]);
delete(this._audioSources[src]);
this._loaders[src].destroy();
delete(this._loaders[src]);
};
/**
* Remove all sounds added using {{#crossLink "WebAudioPlugin/register"}}{{/crossLink}}. Note this does not cancel a preload.
* @method removeAllSounds
* @param {String} src The sound URI to unload.
*/
p.removeAllSounds = function () {
for(var key in this._audioSources) {
this.removeSound(key);
}
};
/**
* Create a sound instance. If the sound has not been preloaded, it is internally preloaded here.
* @method create
* @param {String} src The sound source to use.
* @param {Number} startTime Audio sprite property used to apply an offset, in milliseconds.
* @param {Number} duration Audio sprite property used to set the time the clip plays for, in milliseconds.
* @return {AbstractSoundInstance} A sound instance for playback and control.
*/
p.create = function (src, startTime, duration) {
if (!this.isPreloadStarted(src)) {
this.preload(this.register(src));
}
var si = new this._soundInstanceClass(src, startTime, duration, this._audioSources[src]);
this._soundInstances[src].push(si);
return si;
};
// TODO Volume & mute Getter / Setter??
// TODO change calls to return nothing or this for chaining??
// if a plugin does not support volume and mute, it should set these to null
/**
* Set the master volume of the plugin, which affects all SoundInstances.
* @method setVolume
* @param {Number} value The volume to set, between 0 and 1.
* @return {Boolean} If the plugin processes the setVolume call (true). The Sound class will affect all the
* instances manually otherwise.
*/
p.setVolume = function (value) {
this._volume = value;
this._updateVolume();
return true;
};
/**
* Get the master volume of the plugin, which affects all SoundInstances.
* @method getVolume
* @return The volume level, between 0 and 1.
*/
p.getVolume = function () {
return this._volume;
};
/**
* Mute all sounds via the plugin.
* @method setMute
* @param {Boolean} value If all sound should be muted or not. Note that plugin-level muting just looks up
* the mute value of Sound {{#crossLink "Sound/getMute"}}{{/crossLink}}, so this property is not used here.
* @return {Boolean} If the mute call succeeds.
*/
p.setMute = function (value) {
this._updateVolume();
return true;
};
// plugins should overwrite this method
p.toString = function () {
return "[AbstractPlugin]";
};
// private methods:
/**
* Handles internal preload completion.
* @method _handlePreloadComplete
* @protected
*/
p._handlePreloadComplete = function (event) {
var src = event.target.getItem().src;
this._audioSources[src] = event.result;
for (var i = 0, l = this._soundInstances[src].length; i < l; i++) {
var item = this._soundInstances[src][i];
item.setPlaybackResource(this._audioSources[src]);
// ToDo consider adding play call here if playstate == playfailed
}
};
/**
* Handles internal preload erros
* @method _handlePreloadError
* @param event
* @protected
*/
p._handlePreloadError = function(event) {
//delete(this._audioSources[src]);
};
/**
* Set the gain value for master audio. Should not be called externally.
* @method _updateVolume
* @protected
*/
p._updateVolume = function () {
// Plugin Specific code
};
createjs.AbstractPlugin = AbstractPlugin;
}());
//##############################################################################
// WebAudioLoader.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
/**
* Loader provides a mechanism to preload Web Audio content via PreloadJS or internally. Instances are returned to
* the preloader, and the load method is called when the asset needs to be requested.
*
* @class WebAudioLoader
* @param {String} src The path to the sound
* @param {Object} flash The flash instance that will do the preloading.
* @extends XHRRequest
* @protected
*/
function Loader(src) {
this.AbstractLoader_constructor(src, true, createjs.AbstractLoader.SOUND);
};
var p = createjs.extend(Loader, createjs.AbstractLoader);
/**
* web audio context required for decoding audio
* @property context
* @type {AudioContext}
* @static
*/
Loader.context = null;
// public methods
p.toString = function () {
return "[WebAudioLoader]";
};
// private methods
p._createRequest = function() {
this._request = new createjs.XHRRequest(this._item, false);
this._request.setResponseType("arraybuffer");
};
p._sendComplete = function (event) {
// OJR we leave this wrapped in Loader because we need to reference src and the handler only receives a single argument, the decodedAudio
Loader.context.decodeAudioData(this._rawResult,
createjs.proxy(this._handleAudioDecoded, this),
createjs.proxy(this._handleError, this));
};
/**
* The audio has been decoded.
* @method handleAudioDecoded
* @param decoded
* @protected
*/
p._handleAudioDecoded = function (decodedAudio) {
this._result = decodedAudio;
this.AbstractLoader__sendComplete();
};
createjs.WebAudioLoader = createjs.promote(Loader, "AbstractLoader");
}());
//##############################################################################
// WebAudioSoundInstance.js
//##############################################################################
this.createjs = this.createjs || {};
/**
* WebAudioSoundInstance extends the base api of {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} and is used by
* {{#crossLink "WebAudioPlugin"}}{{/crossLink}}.
*
* WebAudioSoundInstance exposes audioNodes for advanced users.
*
* @param {String} src The path to and file name of the sound.
* @param {Number} startTime Audio sprite property used to apply an offset, in milliseconds.
* @param {Number} duration Audio sprite property used to set the time the clip plays for, in milliseconds.
* @param {Object} playbackResource Any resource needed by plugin to support audio playback.
* @class WebAudioSoundInstance
* @extends AbstractSoundInstance
* @constructor
*/
(function () {
"use strict";
function WebAudioSoundInstance(src, startTime, duration, playbackResource) {
this.AbstractSoundInstance_constructor(src, startTime, duration, playbackResource);
// public properties
/**
* NOTE this is only intended for use by advanced users.
*
GainNode for controlling WebAudioSoundInstance volume. Connected to the {{#crossLink "WebAudioSoundInstance/destinationNode:property"}}{{/crossLink}}.
* @property gainNode
* @type {AudioGainNode}
* @since 0.4.0
*
*/
this.gainNode = s.context.createGain();
/**
* NOTE this is only intended for use by advanced users.
*
A panNode allowing left and right audio channel panning only. Connected to WebAudioSoundInstance {{#crossLink "WebAudioSoundInstance/gainNode:property"}}{{/crossLink}}.
* @property panNode
* @type {AudioPannerNode}
* @since 0.4.0
*/
this.panNode = s.context.createPanner();
this.panNode.panningModel = s._panningModel;
this.panNode.connect(this.gainNode);
/**
* NOTE this is only intended for use by advanced users.
*
sourceNode is the audio source. Connected to WebAudioSoundInstance {{#crossLink "WebAudioSoundInstance/panNode:property"}}{{/crossLink}}.
* @property sourceNode
* @type {AudioNode}
* @since 0.4.0
*
*/
this.sourceNode = null;
// private properties
/**
* Timeout that is created internally to handle sound playing to completion.
* Stored so we can remove it when stop, pause, or cleanup are called
* @property _soundCompleteTimeout
* @type {timeoutVariable}
* @default null
* @protected
* @since 0.4.0
*/
this._soundCompleteTimeout = null;
/**
* NOTE this is only intended for use by very advanced users.
* _sourceNodeNext is the audio source for the next loop, inserted in a look ahead approach to allow for smooth
* looping. Connected to {{#crossLink "WebAudioSoundInstance/gainNode:property"}}{{/crossLink}}.
* @property _sourceNodeNext
* @type {AudioNode}
* @default null
* @protected
* @since 0.4.1
*
*/
this._sourceNodeNext = null;
/**
* Time audio started playback, in seconds. Used to handle set position, get position, and resuming from paused.
* @property _playbackStartTime
* @type {Number}
* @default 0
* @protected
* @since 0.4.0
*/
this._playbackStartTime = 0;
// Proxies, make removing listeners easier.
this._endedHandler = createjs.proxy(this._handleSoundComplete, this);
};
var p = createjs.extend(WebAudioSoundInstance, createjs.AbstractSoundInstance);
var s = WebAudioSoundInstance;
/**
* Note this is only intended for use by advanced users.
*
Audio context used to create nodes. This is and needs to be the same context used by {{#crossLink "WebAudioPlugin"}}{{/crossLink}}.
* @property context
* @type {AudioContext}
* @static
* @since 0.6.0
*/
s.context = null;
/**
* Note this is only intended for use by advanced users.
*
Audio node from WebAudioPlugin that sequences to context.destination
* @property destinationNode
* @type {AudioNode}
* @static
* @since 0.6.0
*/
s.destinationNode = null;
/**
* Value to set panning model to equal power for WebAudioSoundInstance. Can be "equalpower" or 0 depending on browser implementation.
* @property _panningModel
* @type {Number / String}
* @protected
* @static
* @since 0.6.0
*/
s._panningModel = "equalpower";
// Public methods
p.destroy = function() {
this.AbstractSoundInstance_destroy();
this.panNode.disconnect(0);
this.panNode = null;
this.gainNode.disconnect(0);
this.gainNode = null;
};
p.toString = function () {
return "[WebAudioSoundInstance]";
};
// Private Methods
p._updatePan = function() {
this.panNode.setPosition(this._pan, 0, -0.5);
// z need to be -0.5 otherwise the sound only plays in left, right, or center
};
p._removeLooping = function() {
this._sourceNodeNext = this._cleanUpAudioNode(this._sourceNodeNext);
};
p._addLooping = function() {
if (this.playState != createjs.Sound.PLAY_SUCCEEDED) { return; }
this._sourceNodeNext = this._createAndPlayAudioNode(this._playbackStartTime, 0);
};
p._setDurationFromSource = function () {
this._duration = this.playbackResource.duration * 1000;
};
p._handleCleanUp = function () {
if (this.sourceNode && this.playState == createjs.Sound.PLAY_SUCCEEDED) {
this.sourceNode = this._cleanUpAudioNode(this.sourceNode);
this._sourceNodeNext = this._cleanUpAudioNode(this._sourceNodeNext);
}
if (this.gainNode.numberOfOutputs != 0) {this.gainNode.disconnect(0);}
// OJR there appears to be a bug that this doesn't always work in webkit (Chrome and Safari). According to the documentation, this should work.
clearTimeout(this._soundCompleteTimeout);
this._playbackStartTime = 0; // This is used by getPosition
};
/**
* Turn off and disconnect an audioNode, then set reference to null to release it for garbage collection
* @method _cleanUpAudioNode
* @param audioNode
* @return {audioNode}
* @protected
* @since 0.4.1
*/
p._cleanUpAudioNode = function(audioNode) {
if(audioNode) {
audioNode.stop(0);
audioNode.disconnect(0);
audioNode = null;
}
return audioNode;
};
p._handleSoundReady = function (event) {
this.gainNode.connect(s.destinationNode); // this line can cause a memory leak. Nodes need to be disconnected from the audioDestination or any sequence that leads to it.
var dur = this._duration * 0.001;
var pos = this._position * 0.001;
this.sourceNode = this._createAndPlayAudioNode((s.context.currentTime - dur), pos);
this._playbackStartTime = this.sourceNode.startTime - pos;
this._soundCompleteTimeout = setTimeout(this._endedHandler, (dur - pos) * 1000);
if(this._loop != 0) {
this._sourceNodeNext = this._createAndPlayAudioNode(this._playbackStartTime, 0);
}
};
/**
* Creates an audio node using the current src and context, connects it to the gain node, and starts playback.
* @method _createAndPlayAudioNode
* @param {Number} startTime The time to add this to the web audio context, in seconds.
* @param {Number} offset The amount of time into the src audio to start playback, in seconds.
* @return {audioNode}
* @protected
* @since 0.4.1
*/
p._createAndPlayAudioNode = function(startTime, offset) {
var audioNode = s.context.createBufferSource();
audioNode.buffer = this.playbackResource;
audioNode.connect(this.panNode);
var dur = this._duration * 0.001;
audioNode.startTime = startTime + dur;
audioNode.start(audioNode.startTime, offset+(this._startTime*0.001), dur - offset);
return audioNode;
};
p._pause = function () {
this._position = (s.context.currentTime - this._playbackStartTime) * 1000; // * 1000 to give milliseconds, lets us restart at same point
this.sourceNode = this._cleanUpAudioNode(this.sourceNode);
this._sourceNodeNext = this._cleanUpAudioNode(this._sourceNodeNext);
if (this.gainNode.numberOfOutputs != 0) {this.gainNode.disconnect(0);}
clearTimeout(this._soundCompleteTimeout);
};
p._resume = function () {
this._handleSoundReady();
};
/*
p._handleStop = function () {
// web audio does not need to do anything extra
};
*/
p._updateVolume = function () {
var newVolume = this._muted ? 0 : this._volume;
if (newVolume != this.gainNode.gain.value) {
this.gainNode.gain.value = newVolume;
}
};
p._calculateCurrentPosition = function () {
return ((s.context.currentTime - this._playbackStartTime) * 1000); // pos in seconds * 1000 to give milliseconds
};
p._updatePosition = function () {
this.sourceNode = this._cleanUpAudioNode(this.sourceNode);
this._sourceNodeNext = this._cleanUpAudioNode(this._sourceNodeNext);
clearTimeout(this._soundCompleteTimeout);
if (!this._paused) {this._handleSoundReady();}
};
// OJR we are using a look ahead approach to ensure smooth looping.
// We add _sourceNodeNext to the audio context so that it starts playing even if this callback is delayed.
// This technique is described here: http://www.html5rocks.com/en/tutorials/audio/scheduling/
// NOTE the cost of this is that our audio loop may not always match the loop event timing precisely.
p._handleLoop = function () {
this._cleanUpAudioNode(this.sourceNode);
this.sourceNode = this._sourceNodeNext;
this._playbackStartTime = this.sourceNode.startTime;
this._sourceNodeNext = this._createAndPlayAudioNode(this._playbackStartTime, 0);
this._soundCompleteTimeout = setTimeout(this._endedHandler, this._duration);
};
p._updateDuration = function () {
this._pause();
this._resume();
};
createjs.WebAudioSoundInstance = createjs.promote(WebAudioSoundInstance, "AbstractSoundInstance");
}());
//##############################################################################
// WebAudioPlugin.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
/**
* Play sounds using Web Audio in the browser. The WebAudioPlugin is currently the default plugin, and will be used
* anywhere that it is supported. To change plugin priority, check out the Sound API
* {{#crossLink "Sound/registerPlugins"}}{{/crossLink}} method.
* Known Browser and OS issues for Web Audio
* Firefox 25
* - mp3 audio files do not load properly on all windows machines, reported
* here.
* For this reason it is recommended to pass another FF supported type (ie ogg) first until this bug is resolved, if possible.
*
* Webkit (Chrome and Safari)
* - AudioNode.disconnect does not always seem to work. This can cause the file size to grow over time if you
* are playing a lot of audio files.
*
* iOS 6 limitations
* - Sound is initially muted and will only unmute through play being called inside a user initiated event (touch/click).
* - A bug exists that will distort uncached audio when a video element is present in the DOM. You can avoid this bug
* by ensuring the audio and video audio share the same sampleRate.
*
* @class WebAudioPlugin
* @extends AbstractPlugin
* @constructor
* @since 0.4.0
*/
function WebAudioPlugin() {
this.AbstractPlugin_constructor();
// Private Properties
/**
* Value to set panning model to equal power for WebAudioSoundInstance. Can be "equalpower" or 0 depending on browser implementation.
* @property _panningModel
* @type {Number / String}
* @protected
*/
this._panningModel = s._panningModel;;
/**
* The internal master volume value of the plugin.
* @property _volume
* @type {Number}
* @default 1
* @protected
*/
this._volume = 1;
/**
* The web audio context, which WebAudio uses to play audio. All nodes that interact with the WebAudioPlugin
* need to be created within this context.
* @property context
* @type {AudioContext}
*/
this.context = s.context;
/**
* A DynamicsCompressorNode, which is used to improve sound quality and prevent audio distortion.
* It is connected to context.destination.
*
* Can be accessed by advanced users through createjs.Sound.activePlugin.dynamicsCompressorNode.
* @property dynamicsCompressorNode
* @type {AudioNode}
*/
this.dynamicsCompressorNode = this.context.createDynamicsCompressor();
this.dynamicsCompressorNode.connect(this.context.destination);
/**
* A GainNode for controlling master volume. It is connected to {{#crossLink "WebAudioPlugin/dynamicsCompressorNode:property"}}{{/crossLink}}.
*
* Can be accessed by advanced users through createjs.Sound.activePlugin.gainNode.
* @property gainNode
* @type {AudioGainNode}
*/
this.gainNode = this.context.createGain();
this.gainNode.connect(this.dynamicsCompressorNode);
createjs.WebAudioSoundInstance.destinationNode = this.gainNode;
this._capabilities = s._capabilities;
this._loaderClass = createjs.WebAudioLoader;
this._soundInstanceClass = createjs.WebAudioSoundInstance;
this._addPropsToClasses();
}
var p = createjs.extend(WebAudioPlugin, createjs.AbstractPlugin);
// Static Properties
var s = WebAudioPlugin;
/**
* The capabilities of the plugin. This is generated via the {{#crossLink "WebAudioPlugin/_generateCapabilities:method"}}{{/crossLink}}
* method and is used internally.
* @property _capabilities
* @type {Object}
* @default null
* @protected
* @static
*/
s._capabilities = null;
/**
* Value to set panning model to equal power for WebAudioSoundInstance. Can be "equalpower" or 0 depending on browser implementation.
* @property _panningModel
* @type {Number / String}
* @protected
* @static
*/
s._panningModel = "equalpower";
/**
* The web audio context, which WebAudio uses to play audio. All nodes that interact with the WebAudioPlugin
* need to be created within this context.
*
* Advanced users can set this to an existing context, but must do so before they call
* {{#crossLink "Sound/registerPlugins"}}{{/crossLink}} or {{#crossLink "Sound/initializeDefaultPlugins"}}{{/crossLink}}.
*
* @property context
* @type {AudioContext}
* @static
*/
s.context = null;
// Static Public Methods
/**
* Determine if the plugin can be used in the current browser/OS.
* @method isSupported
* @return {Boolean} If the plugin can be initialized.
* @static
*/
s.isSupported = function () {
// check if this is some kind of mobile device, Web Audio works with local protocol under PhoneGap and it is unlikely someone is trying to run a local file
var isMobilePhoneGap = createjs.BrowserDetect.isIOS || createjs.BrowserDetect.isAndroid || createjs.BrowserDetect.isBlackberry;
// OJR isMobile may be redundant with _isFileXHRSupported available. Consider removing.
if (location.protocol == "file:" && !isMobilePhoneGap && !this._isFileXHRSupported()) { return false; } // Web Audio requires XHR, which is not usually available locally
s._generateCapabilities();
if (s.context == null) {return false;}
return true;
};
/**
* Plays an empty sound in the web audio context. This is used to enable web audio on iOS devices, as they
* require the first sound to be played inside of a user initiated event (touch/click). This is called when
* {{#crossLink "WebAudioPlugin"}}{{/crossLink}} is initialized (by Sound {{#crossLink "Sound/initializeDefaultPlugins"}}{{/crossLink}}
* for example).
*
* Example
* function handleTouch(event) {
* createjs.WebAudioPlugin.playEmptySound();
* }
*
* @method playEmptySound
* @static
* @since 0.4.1
*/
s.playEmptySound = function() {
var source = s.context.createBufferSource();
source.buffer = s.context.createBuffer(1, 1, 22050);
source.connect(s.context.destination);
source.start(0, 0, 0);
};
// Static Private Methods
/**
* Determine if XHR is supported, which is necessary for web audio.
* @method _isFileXHRSupported
* @return {Boolean} If XHR is supported.
* @since 0.4.2
* @protected
* @static
*/
s._isFileXHRSupported = function() {
// it's much easier to detect when something goes wrong, so let's start optimistically
var supported = true;
var xhr = new XMLHttpRequest();
try {
xhr.open("GET", "WebAudioPluginTest.fail", false); // loading non-existant file triggers 404 only if it could load (synchronous call)
} catch (error) {
// catch errors in cases where the onerror is passed by
supported = false;
return supported;
}
xhr.onerror = function() { supported = false; }; // cause irrelevant
// with security turned off, we can get empty success results, which is actually a failed read (status code 0?)
xhr.onload = function() { supported = this.status == 404 || (this.status == 200 || (this.status == 0 && this.response != "")); };
try {
xhr.send();
} catch (error) {
// catch errors in cases where the onerror is passed by
supported = false;
}
return supported;
};
/**
* Determine the capabilities of the plugin. Used internally. Please see the Sound API {{#crossLink "Sound/getCapabilities"}}{{/crossLink}}
* method for an overview of plugin capabilities.
* @method _generateCapabilities
* @static
* @protected
*/
s._generateCapabilities = function () {
if (s._capabilities != null) {return;}
// Web Audio can be in any formats supported by the audio element, from http://www.w3.org/TR/webaudio/#AudioContext-section
var t = document.createElement("audio");
if (t.canPlayType == null) {return null;}
if (s.context == null) {
if (window.AudioContext) {
s.context = new AudioContext();
} else if (window.webkitAudioContext) {
s.context = new webkitAudioContext();
} else {
return null;
}
}
s._compatibilitySetUp();
// playing this inside of a touch event will enable audio on iOS, which starts muted
s.playEmptySound();
s._capabilities = {
panning:true,
volume:true,
tracks:-1
};
// determine which extensions our browser supports for this plugin by iterating through Sound.SUPPORTED_EXTENSIONS
var supportedExtensions = createjs.Sound.SUPPORTED_EXTENSIONS;
var extensionMap = createjs.Sound.EXTENSION_MAP;
for (var i = 0, l = supportedExtensions.length; i < l; i++) {
var ext = supportedExtensions[i];
var playType = extensionMap[ext] || ext;
s._capabilities[ext] = (t.canPlayType("audio/" + ext) != "no" && t.canPlayType("audio/" + ext) != "") || (t.canPlayType("audio/" + playType) != "no" && t.canPlayType("audio/" + playType) != "");
} // OJR another way to do this might be canPlayType:"m4a", codex: mp4
// 0=no output, 1=mono, 2=stereo, 4=surround, 6=5.1 surround.
// See http://www.w3.org/TR/webaudio/#AudioChannelSplitter for more details on channels.
if (s.context.destination.numberOfChannels < 2) {
s._capabilities.panning = false;
}
};
/**
* Set up compatibility if only deprecated web audio calls are supported.
* See http://www.w3.org/TR/webaudio/#DeprecationNotes
* Needed so we can support new browsers that don't support deprecated calls (Firefox) as well as old browsers that
* don't support new calls.
*
* @method _compatibilitySetUp
* @static
* @protected
* @since 0.4.2
*/
s._compatibilitySetUp = function() {
s._panningModel = "equalpower";
//assume that if one new call is supported, they all are
if (s.context.createGain) { return; }
// simple name change, functionality the same
s.context.createGain = s.context.createGainNode;
// source node, add to prototype
var audioNode = s.context.createBufferSource();
audioNode.__proto__.start = audioNode.__proto__.noteGrainOn; // note that noteGrainOn requires all 3 parameters
audioNode.__proto__.stop = audioNode.__proto__.noteOff;
// panningModel
s._panningModel = 0;
};
// Public Methods
p.toString = function () {
return "[WebAudioPlugin]";
};
// Private Methods
/**
* Set up needed properties on supported classes WebAudioSoundInstance and WebAudioLoader.
* @method _addPropsToClasses
* @static
* @protected
* @since 0.6.0
*/
p._addPropsToClasses = function() {
var c = this._soundInstanceClass;
c.context = this.context;
c.destinationNode = this.gainNode;
c._panningModel = this._panningModel;
this._loaderClass.context = this.context;
};
/**
* Set the gain value for master audio. Should not be called externally.
* @method _updateVolume
* @protected
*/
p._updateVolume = function () {
var newVolume = createjs.Sound._masterMute ? 0 : this._volume;
if (newVolume != this.gainNode.gain.value) {
this.gainNode.gain.value = newVolume;
}
};
createjs.WebAudioPlugin = createjs.promote(WebAudioPlugin, "AbstractPlugin");
}());
//##############################################################################
// HTMLAudioTagPool.js
//##############################################################################
this.createjs = this.createjs || {};
//TODO verify that tags no longer need to be precreated (mac and pc)
//TODO modify this now that tags do not need to be precreated
(function () {
"use strict";
/**
* The TagPool is an object pool for HTMLAudio tag instances. In Chrome, we have to pre-create the number of HTML
* audio tag instances that we are going to play before we load the data, otherwise the audio stalls.
* (Note: This seems to be a bug in Chrome)
* @class HTMLAudioTagPool
* @param {String} src The source of the channel.
* @protected
*/
function TagPool(src) {
//Public Properties
/**
* The source of the tag pool.
* #property src
* @type {String}
* @protected
*/
this.src = src;
/**
* The total number of HTMLAudio tags in this pool. This is the maximum number of instance of a certain sound
* that can play at one time.
* #property length
* @type {Number}
* @default 0
* @protected
*/
this.length = 0;
/**
* The number of unused HTMLAudio tags.
* #property available
* @type {Number}
* @default 0
* @protected
*/
this.available = 0;
/**
* A list of all available tags in the pool.
* #property tags
* @type {Array}
* @protected
*/
this.tags = [];
/**
* The duration property of all audio tags, converted to milliseconds, which originally is only available on the
* last tag in the tags array because that is the one that is loaded.
* #property
* @type {Number}
* @protected
*/
this.duration = 0;
};
var p = TagPool.prototype;
p.constructor = TagPool;
var s = TagPool;
// Static Properties
/**
* A hash lookup of each sound channel, indexed by the audio source.
* #property tags
* @static
* @protected
*/
s.tags = {};
// Static Methods
/**
* Get a tag pool. If the pool doesn't exist, create it.
* #method get
* @param {String} src The source file used by the audio tag.
* @static
* @protected
*/
s.get = function (src) {
var channel = s.tags[src];
if (channel == null) {
channel = s.tags[src] = new TagPool(src);
}
return channel;
};
/**
* Delete a TagPool and all related tags. Note that if the TagPool does not exist, this will fail.
* #method remove
* @param {String} src The source for the tag
* @return {Boolean} If the TagPool was deleted.
* @static
*/
s.remove = function (src) {
var channel = s.tags[src];
if (channel == null) {return false;}
channel.removeAll();
delete(s.tags[src]);
return true;
};
/**
* Get a tag instance. This is a shortcut method.
* #method getInstance
* @param {String} src The source file used by the audio tag.
* @static
* @protected
*/
s.getInstance = function (src) {
var channel = s.tags[src];
if (channel == null) {return null;}
return channel.get();
};
/**
* Return a tag instance. This is a shortcut method.
* #method setInstance
* @param {String} src The source file used by the audio tag.
* @param {HTMLElement} tag Audio tag to set.
* @static
* @protected
*/
s.setInstance = function (src, tag) {
var channel = s.tags[src];
if (channel == null) {return null;}
return channel.set(tag);
};
/**
* Gets the duration of the src audio in milliseconds
* #method getDuration
* @param {String} src The source file used by the audio tag.
* @return {Number} Duration of src in milliseconds
*/
s.getDuration= function (src) {
var channel = s.tags[src];
if (channel == null) {return 0;}
return channel.getDuration();
};
// Public Methods
/**
* Add an HTMLAudio tag into the pool.
* #method add
* @param {HTMLAudioElement} tag A tag to be used for playback.
*/
p.add = function (tag) {
this.tags.push(tag);
this.length++;
this.available++;
};
/**
* Remove all tags from the channel. Usually in response to a delete call.
* #method removeAll
*/
p.removeAll = function () {
var tag;
while(this.length--) {
tag = this.tags[this.length];
if(tag.parentNode) {
tag.parentNode.removeChild(tag);
}
delete(this.tags[this.length]); // NOTE that the audio playback is already stopped by this point
}
this.src = null;
this.tags.length = 0;
};
/**
* Get an HTMLAudioElement for immediate playback. This takes it out of the pool.
* #method get
* @return {HTMLAudioElement} An HTML audio tag.
*/
p.get = function () {
if (this.tags.length == 0) {return null;}
this.available = this.tags.length;
var tag = this.tags.pop();
if (tag.parentNode == null) {document.body.appendChild(tag);}
return tag;
};
/**
* Put an HTMLAudioElement back in the pool for use.
* #method set
* @param {HTMLAudioElement} tag HTML audio tag
*/
p.set = function (tag) {
var index = createjs.indexOf(this.tags, tag);
if (index == -1) {this.tags.push(tag);}
this.available = this.tags.length;
};
/**
* Gets the duration for the src audio and on first call stores it to this.duration
* #method getDuration
* @return {Number} Duration of the src in milliseconds
*/
p.getDuration = function () {
// this will work because this will be only be run the first time a sound instance is created and before any tags are taken from the pool
if (!this.duration) {this.duration = this.tags[this.tags.length - 1].duration * 1000;}
return this.duration;
};
p.toString = function () {
return "[HTMLAudioTagPool]";
};
createjs.HTMLAudioTagPool = TagPool;
}());
//##############################################################################
// HTMLAudioSoundInstance.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
/**
* HTMLAudioSoundInstance extends the base api of {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} and is used by
* {{#crossLink "HTMLAudioPlugin"}}{{/crossLink}}.
*
* @param {String} src The path to and file name of the sound.
* @param {Number} startTime Audio sprite property used to apply an offset, in milliseconds.
* @param {Number} duration Audio sprite property used to set the time the clip plays for, in milliseconds.
* @param {Object} playbackResource Any resource needed by plugin to support audio playback.
* @class HTMLAudioSoundInstance
* @extends AbstractSoundInstance
* @constructor
*/
function HTMLAudioSoundInstance(src, startTime, duration, playbackResource) {
this.AbstractSoundInstance_constructor(src, startTime, duration, playbackResource);
// Private Properties
this._audioSpriteStopTime = null;
this._delayTimeoutId = null;
// Proxies, make removing listeners easier.
this._endedHandler = createjs.proxy(this._handleSoundComplete, this);
this._readyHandler = createjs.proxy(this._handleTagReady, this);
this._stalledHandler = createjs.proxy(this.playFailed, this);
this._audioSpriteEndHandler = createjs.proxy(this._handleAudioSpriteLoop, this);
this._loopHandler = createjs.proxy(this._handleSoundComplete, this);
if (duration) {
this._audioSpriteStopTime = (startTime + duration) * 0.001;
} else {
this._duration = createjs.HTMLAudioTagPool.getDuration(this.src);
}
}
var p = createjs.extend(HTMLAudioSoundInstance, createjs.AbstractSoundInstance);
// Public Methods
/**
* Called by {{#crossLink "Sound"}}{{/crossLink}} when plugin does not handle master volume.
* undoc'd because it is not meant to be used outside of Sound
* #method setMasterVolume
* @param value
*/
p.setMasterVolume = function (value) {
this._updateVolume();
};
/**
* Called by {{#crossLink "Sound"}}{{/crossLink}} when plugin does not handle master mute.
* undoc'd because it is not meant to be used outside of Sound
* #method setMasterMute
* @param value
*/
p.setMasterMute = function (isMuted) {
this._updateVolume();
};
p.toString = function () {
return "[HTMLAudioSoundInstance]";
};
//Private Methods
p._removeLooping = function() {
if(this._playbackResource == null) {return;}
this._playbackResource.loop = false;
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
};
p._addLooping = function() {
if(this._playbackResource == null || this._audioSpriteStopTime) {return;}
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
this._playbackResource.loop = true;
};
p._handleCleanUp = function () {
var tag = this._playbackResource;
if (tag != null) {
tag.pause();
tag.loop = false;
tag.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_ENDED, this._endedHandler, false);
tag.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_READY, this._readyHandler, false);
tag.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_STALLED, this._stalledHandler, false);
tag.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
tag.removeEventListener(createjs.HTMLAudioPlugin._TIME_UPDATE, this._audioSpriteEndHandler, false);
try {
tag.currentTime = this._startTime;
} catch (e) {
} // Reset Position
createjs.HTMLAudioTagPool.setInstance(this.src, tag);
this._playbackResource = null;
}
};
p._beginPlaying = function (offset, loop, volume, pan) {
this._playbackResource = createjs.HTMLAudioTagPool.getInstance(this.src);
return this.AbstractSoundInstance__beginPlaying(offset, loop, volume, pan);
};
p._handleSoundReady = function (event) {
if (this._playbackResource.readyState !== 4) {
var tag = this._playbackResource;
tag.addEventListener(createjs.HTMLAudioPlugin._AUDIO_READY, this._readyHandler, false);
tag.addEventListener(createjs.HTMLAudioPlugin._AUDIO_STALLED, this._stalledHandler, false);
tag.preload = "auto"; // This is necessary for Firefox, as it won't ever "load" until this is set.
tag.load();
return;
}
this._updateVolume();
this._playbackResource.currentTime = (this._startTime + this._position) * 0.001;
if (this._audioSpriteStopTime) {
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._TIME_UPDATE, this._audioSpriteEndHandler, false);
} else {
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._AUDIO_ENDED, this._endedHandler, false);
if(this._loop != 0) {
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
this._playbackResource.loop = true;
}
}
this._playbackResource.play();
};
/**
* Used to handle when a tag is not ready for immediate playback when it is returned from the HTMLAudioTagPool.
* @method _handleTagReady
* @param event
* @protected
*/
p._handleTagReady = function (event) {
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_READY, this._readyHandler, false);
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_STALLED, this._stalledHandler, false);
this._handleSoundReady();
};
p._pause = function () {
this._playbackResource.pause();
};
p._resume = function () {
this._playbackResource.play();
};
p._updateVolume = function () {
if (this._playbackResource != null) {
var newVolume = (this._muted || createjs.Sound._masterMute) ? 0 : this._volume * createjs.Sound._masterVolume;
if (newVolume != this._playbackResource.volume) {this._playbackResource.volume = newVolume;}
}
};
p._calculateCurrentPosition = function() {
return (this._playbackResource.currentTime * 1000) - this._startTime;
};
p._updatePosition = function() {
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._handleSetPositionSeek, false);
try {
this._playbackResource.currentTime = (this._position + this._startTime) * 0.001;
} catch (error) { // Out of range
this._handleSetPositionSeek(null);
}
};
/**
* Used to enable setting position, as we need to wait for that seek to be done before we add back our loop handling seek listener
* @method _handleSetPositionSeek
* @param event
* @protected
*/
p._handleSetPositionSeek = function(event) {
if (this._playbackResource == null) { return; }
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._handleSetPositionSeek, false);
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
};
/**
* Timer used to loop audio sprites.
* NOTE because of the inaccuracies in the timeupdate event (15 - 250ms) and in setting the tag to the desired timed
* (up to 300ms), it is strongly recommended not to loop audio sprites with HTML Audio if smooth looping is desired
*
* @method _handleAudioSpriteLoop
* @param event
* @private
*/
p._handleAudioSpriteLoop = function (event) {
if(this._playbackResource.currentTime <= this._audioSpriteStopTime) {return;}
this._playbackResource.pause();
if(this._loop == 0) {
this._handleSoundComplete(null);
} else {
this._position = 0;
this._loop--;
this._playbackResource.currentTime = this._startTime * 0.001;
if(!this._paused) {this._playbackResource.play();}
this._sendEvent("loop");
}
};
// NOTE with this approach audio will loop as reliably as the browser allows
// but we could end up sending the loop event after next loop playback begins
p._handleLoop = function (event) {
if(this._loop == 0) {
this._playbackResource.loop = false;
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_SEEKED, this._loopHandler, false);
}
};
p._updateDuration = function () {
this._audioSpriteStopTime = (startTime + duration) * 0.001;
if(this.playState == createjs.Sound.PLAY_SUCCEEDED) {
this._playbackResource.removeEventListener(createjs.HTMLAudioPlugin._AUDIO_ENDED, this._endedHandler, false);
this._playbackResource.addEventListener(createjs.HTMLAudioPlugin._TIME_UPDATE, this._audioSpriteEndHandler, false);
}
};
/* This should never change
p._setDurationFromSource = function () {
this._duration = createjs.HTMLAudioTagPool.getDuration(this.src);
};
*/
createjs.HTMLAudioSoundInstance = createjs.promote(HTMLAudioSoundInstance, "AbstractSoundInstance");
}());
//##############################################################################
// HTMLAudioPlugin.js
//##############################################################################
this.createjs = this.createjs || {};
(function () {
"use strict";
/**
* Play sounds using HTML <audio> tags in the browser. This plugin is the second priority plugin installed
* by default, after the {{#crossLink "WebAudioPlugin"}}{{/crossLink}}. For older browsers that do not support html
* audio, include and install the {{#crossLink "FlashAudioPlugin"}}{{/crossLink}}.
*
* Known Browser and OS issues for HTML Audio
* All browsers
* Testing has shown in all browsers there is a limit to how many audio tag instances you are allowed. If you exceed
* this limit, you can expect to see unpredictable results. This will be seen as soon as you register sounds, as
* tags are precreated to allow Chrome to load them. Please use {{#crossLink "Sound.MAX_INSTANCES"}}{{/crossLink}} as
* a guide to how many total audio tags you can safely use in all browsers.
*
* IE html limitations
* - There is a delay in applying volume changes to tags that occurs once playback is started. So if you have
* muted all sounds, they will all play during this delay until the mute applies internally. This happens regardless of
* when or how you apply the volume change, as the tag seems to need to play to apply it.
* - MP3 encoding will not always work for audio tags if it's not default. We've found default encoding with
* 64kbps works.
* - Occasionally very short samples will get cut off.
* - There is a limit to how many audio tags you can load and play at once, which appears to be determined by
* hardware and browser settings. See {{#crossLink "HTMLAudioPlugin.MAX_INSTANCES"}}{{/crossLink}} for a safe estimate.
* Note that audio sprites can be used as a solution to this issue.
*
* Safari limitations
* - Safari requires Quicktime to be installed for audio playback.
*
* iOS 6 limitations
* - Note it is recommended to use {{#crossLink "WebAudioPlugin"}}{{/crossLink}} for iOS (6+)
* - HTML Audio is disabled by default because
* - can only have one <audio> tag
* - can not preload or autoplay the audio
* - can not cache the audio
* - can not play the audio except inside a user initiated event.
* - audio sprites can be used to mitigate some of these issues and are strongly recommended on iOS
*
*
* Android Native Browser limitations
* - We have no control over audio volume. Only the user can set volume on their device.
* - We can only play audio inside a user event (touch/click). This currently means you cannot loop sound or use a delay.
* Android Chrome 26.0.1410.58 specific limitations
* - Can only play 1 sound at a time.
* - Sound is not cached.
* - Sound can only be loaded in a user initiated touch/click event.
* - There is a delay before a sound is played, presumably while the src is loaded.
*
*
* See {{#crossLink "Sound"}}{{/crossLink}} for general notes on known issues.
*
* @class HTMLAudioPlugin
* @extends AbstractPlugin
* @constructor
*/
function HTMLAudioPlugin() {
this.AbstractPlugin_constructor();
// Public Properties
/**
* The default number of instances to allow. Used by {{#crossLink "Sound"}}{{/crossLink}} when a source
* is registered using the {{#crossLink "Sound/register"}}{{/crossLink}} method. This is only used if
* a value is not provided.
*
* NOTE this property only exists as a limitation of HTML audio.
* @property defaultNumChannels
* @type {Number}
* @default 2
* @since 0.4.0
*/
this.defaultNumChannels = 2;
this._capabilities = s._capabilities;
this._loaderClass = createjs.SoundLoader;
this._soundInstanceClass = createjs.HTMLAudioSoundInstance;
}
var p = createjs.extend(HTMLAudioPlugin, createjs.AbstractPlugin);
var s = HTMLAudioPlugin;
// Static Properties
/**
* The maximum number of instances that can be loaded and played. This is a browser limitation, primarily limited to IE9.
* The actual number varies from browser to browser (and is largely hardware dependant), but this is a safe estimate.
* Audio sprites work around this limitation.
* @property MAX_INSTANCES
* @type {Number}
* @default 30
* @static
*/
s.MAX_INSTANCES = 30;
/**
* Event constant for the "canPlayThrough" event for cleaner code.
* @property _AUDIO_READY
* @type {String}
* @default canplaythrough
* @static
* @protected
*/
s._AUDIO_READY = "canplaythrough";
/**
* Event constant for the "ended" event for cleaner code.
* @property _AUDIO_ENDED
* @type {String}
* @default ended
* @static
* @protected
*/
s._AUDIO_ENDED = "ended";
/**
* Event constant for the "seeked" event for cleaner code. We utilize this event for maintaining loop events.
* @property _AUDIO_SEEKED
* @type {String}
* @default seeked
* @static
* @protected
*/
s._AUDIO_SEEKED = "seeked";
/**
* Event constant for the "stalled" event for cleaner code.
* @property _AUDIO_STALLED
* @type {String}
* @default stalled
* @static
* @protected
*/
s._AUDIO_STALLED = "stalled";
/**
* Event constant for the "timeupdate" event for cleaner code. Utilized for looping audio sprites.
* This event callsback ever 15 to 250ms and can be dropped by the browser for performance.
* @property _TIME_UPDATE
* @type {String}
* @default timeupdate
* @static
* @protected
*/
s._TIME_UPDATE = "timeupdate";
/**
* The capabilities of the plugin. This is generated via the {{#crossLink "HTMLAudioPlugin/_generateCapabilities"}}{{/crossLink}}
* method. Please see the Sound {{#crossLink "Sound/getCapabilities"}}{{/crossLink}} method for an overview of all
* of the available properties.
* @property _capabilities
* @type {Object}
* @protected
* @static
*/
s._capabilities = null;
/**
* Deprecated now that we have audio sprite support. Audio sprites are strongly recommend on iOS for the following reasons:
* it can only have one <audio> tag
* can not preload or autoplay the audio
* can not cache the audio
* can not play the audio except inside a user initiated event
*
* @property enableIOS
* @type {Boolean}
* @default false
* @deprecated
*/
s.enableIOS = false;
// Static Methods
/**
* Determine if the plugin can be used in the current browser/OS. Note that HTML audio is available in most modern
* browsers, but is disabled in iOS because of its limitations.
* @method isSupported
* @return {Boolean} If the plugin can be initialized.
* @static
*/
s.isSupported = function () {
s._generateCapabilities();
if (s._capabilities == null) {return false;}
return true;
};
/**
* Determine the capabilities of the plugin. Used internally. Please see the Sound API {{#crossLink "Sound/getCapabilities"}}{{/crossLink}}
* method for an overview of plugin capabilities.
* @method _generateCapabilities
* @static
* @protected
*/
s._generateCapabilities = function () {
if (s._capabilities != null) {return;}
var t = document.createElement("audio");
if (t.canPlayType == null) {return null;}
s._capabilities = {
panning:true,
volume:true,
tracks:-1
};
// determine which extensions our browser supports for this plugin by iterating through Sound.SUPPORTED_EXTENSIONS
var supportedExtensions = createjs.Sound.SUPPORTED_EXTENSIONS;
var extensionMap = createjs.Sound.EXTENSION_MAP;
for (var i = 0, l = supportedExtensions.length; i < l; i++) {
var ext = supportedExtensions[i];
var playType = extensionMap[ext] || ext;
s._capabilities[ext] = (t.canPlayType("audio/" + ext) != "no" && t.canPlayType("audio/" + ext) != "") || (t.canPlayType("audio/" + playType) != "no" && t.canPlayType("audio/" + playType) != "");
} // OJR another way to do this might be canPlayType:"m4a", codex: mp4
};
// public methods
p.register = function (src, instances) {
var channel = createjs.HTMLAudioTagPool.get(src);
var tag = null;
for (var i = 0; i < instances; i++) {
tag = this._createTag(src);
channel.add(tag);
}
var loader = this.AbstractPlugin_register(src, instances);
loader.setTag(tag);
return loader;
};
p.removeSound = function (src) {
this.AbstractPlugin_removeSound(src);
createjs.HTMLAudioTagPool.remove(src);
};
p.create = function (src, startTime, duration) {
var si = this.AbstractPlugin_create(src, startTime, duration);
si.setPlaybackResource(null);
return si;
};
p.toString = function () {
return "[HTMLAudioPlugin]";
};
// plugin does not support these
p.setVolume = p.getVolume = p.setMute = null;
// private methods
/**
* Create an HTML audio tag.
* @method _createTag
* @param {String} src The source file to set for the audio tag.
* @return {HTMLElement} Returns an HTML audio tag.
* @protected
*/
// TODO move this to tagpool when it changes to be a standard object pool
p._createTag = function (src) {
var tag = document.createElement("audio");
tag.autoplay = false;
tag.preload = "none";
//LM: Firefox fails when this the preload="none" for other tags, but it needs to be "none" to ensure PreloadJS works.
tag.src = src;
return tag;
};
createjs.HTMLAudioPlugin = createjs.promote(HTMLAudioPlugin, "AbstractPlugin");
}());