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audiojs.as
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audiojs.as
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package {
import flash.display.Sprite;
import flash.external.ExternalInterface;
import flash.net.URLRequest;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundTransform;
import flash.events.Event;
import flash.errors.IOError;
import flash.events.IOErrorEvent;
import flash.events.ProgressEvent;
import flash.events.TimerEvent;
import flash.utils.Timer;
import flash.system.Security;
public class audiojs extends Sprite {
private var _channel:SoundChannel;
private var sound:Sound;
private var duration:Number;
private var playerInstance:String;
private var pausePoint:Number = 0;
private var playing:Boolean = false;
private var volume:Number = 1;
private var timer:Timer = new Timer(250, 0);
private function get channel():SoundChannel {
return this._channel;
}
private function set channel(channel:SoundChannel):void {
this._channel = channel;
this._channel.addEventListener(Event.SOUND_COMPLETE, this.soundEnded);
}
public function audiojs():void {
Security.allowDomain("*");
this.playerInstance = root.loaderInfo.parameters.playerInstance+'.';
ExternalInterface.addCallback('init', init);
ExternalInterface.addCallback('load', load);
ExternalInterface.addCallback('playPause', playPause);
ExternalInterface.addCallback('pplay', play);
ExternalInterface.addCallback('ppause', pause);
ExternalInterface.addCallback('skipTo', skipTo);
ExternalInterface.addCallback('setVolume', setVolume);
ExternalInterface.call(this.playerInstance+'loadStarted');
}
private function updatePlayhead(e:TimerEvent = null):void {
var targetPosition:Number = e ? this.channel.position : this.pausePoint;
var playProgress:Number = targetPosition / this.duration;
if (playProgress > 1) playProgress = 1;
if (playProgress > 0) {
ExternalInterface.call(this.playerInstance+'updatePlayhead', playProgress);
}
}
private function loadProgress(e:ProgressEvent):void {
this.duration = (e.bytesTotal / (e.bytesLoaded / this.sound.length))
var loadPercent:Number = e.bytesLoaded / e.bytesTotal;
if (loadPercent > 1) loadPercent = 1;
if (loadPercent > 0) {
ExternalInterface.call(this.playerInstance+'loadProgress', loadPercent, (this.duration/1000));
}
}
private function init(mp3:String):void {
this.load(mp3);
}
private function load(mp3:String):void {
if (this.channel) this.channel.stop();
if (this.sound) this.sound.removeEventListener(ProgressEvent.PROGRESS, this.loadProgress);
this.channel = new SoundChannel();
this.sound = new Sound(new URLRequest(mp3));
this.pausePoint = 0;
this.sound.addEventListener(IOErrorEvent.IO_ERROR, this.loadError);
this.sound.addEventListener(ProgressEvent.PROGRESS, this.loadProgress);
this.timer.addEventListener(TimerEvent.TIMER, this.updatePlayhead);
this.timer.start();
}
private function loadError(e:IOErrorEvent):void {
ExternalInterface.call(this.playerInstance+'loadError');
}
private function play():void {
this.channel = this.sound.play(this.pausePoint);
this.setVolume(this.volume);
this.playing = true;
this.timer.start();
}
private function pause():void {
this.pausePoint = this.channel.position;
this.channel.stop();
this.playing = false;
this.timer.stop();
}
private function playPause():void {
if (this.playing) {
this.pause();
} else {
this.play();
}
}
private function skipTo(percent:Number):void {
this.channel.stop();
this.pausePoint = this.duration * percent;
if (this.playing) {
this.channel = this.sound.play(this.pausePoint);
this.setVolume(this.volume);
} else {
this.updatePlayhead();
}
}
private function setVolume(vol:Number):void {
this.volume = vol;
var transform:SoundTransform = this.channel.soundTransform;
if (vol < 0) vol = 0;
if (vol > 1) vol = 1;
transform.volume = vol;
channel.soundTransform = transform;
}
private function soundEnded(e:Event):void {
ExternalInterface.call(this.playerInstance+'trackEnded');
}
}
}