329 lines
11 KiB
ActionScript
329 lines
11 KiB
ActionScript
/*
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* jPlayer Plugin for jQuery JavaScript Library
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* http://www.happyworm.com/jquery/jplayer
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*
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* Copyright (c) 2009 - 2011 Happyworm Ltd
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* Dual licensed under the MIT and GPL licenses.
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* - http://www.opensource.org/licenses/mit-license.php
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* - http://www.gnu.org/copyleft/gpl.html
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*
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* Author: Mark J Panaghiston
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* Date: 1st September 2011
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*/
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package happyworm.jPlayer {
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import flash.display.Sprite;
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import flash.media.Sound;
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import flash.media.SoundChannel;
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import flash.media.SoundLoaderContext;
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import flash.media.SoundTransform;
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import flash.net.URLRequest;
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import flash.utils.Timer;
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import flash.errors.IOError;
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import flash.events.*;
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public class JplayerMp3 extends Sprite {
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private var mySound:Sound = new Sound();
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private var myChannel:SoundChannel = new SoundChannel();
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private var myContext:SoundLoaderContext = new SoundLoaderContext(3000, false);
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private var myTransform:SoundTransform = new SoundTransform();
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private var myRequest:URLRequest = new URLRequest();
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private var timeUpdateTimer:Timer = new Timer(250, 0); // Matched to HTML event freq
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private var progressTimer:Timer = new Timer(250, 0); // Matched to HTML event freq
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private var seekingTimer:Timer = new Timer(100, 0); // Internal: How often seeking is checked to see if it is over.
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public var myStatus:JplayerStatus = new JplayerStatus();
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public function JplayerMp3(volume:Number) {
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timeUpdateTimer.addEventListener(TimerEvent.TIMER, timeUpdateHandler);
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progressTimer.addEventListener(TimerEvent.TIMER, progressHandler);
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seekingTimer.addEventListener(TimerEvent.TIMER, seekingHandler);
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setVolume(volume);
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}
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public function setFile(src:String):void {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.DEBUG_MSG, myStatus, "setFile: " + src));
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if(myStatus.isPlaying) {
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myChannel.stop();
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progressUpdates(false);
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timeUpdates(false);
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}
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try {
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mySound.close();
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} catch (err:IOError) {
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// Occurs if the file is either yet to be opened or has finished downloading.
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}
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mySound = null;
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mySound = new Sound();
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mySound.addEventListener(IOErrorEvent.IO_ERROR, errorHandler);
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mySound.addEventListener(Event.OPEN, loadOpen);
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mySound.addEventListener(Event.COMPLETE, loadComplete);
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myRequest = new URLRequest(src);
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myStatus.reset();
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myStatus.src = src;
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myStatus.srcSet = true;
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timeUpdateEvent();
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}
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public function clearFile():void {
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setFile("");
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myStatus.srcSet = false;
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}
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private function errorHandler(err:IOErrorEvent):void {
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// MP3 player needs to stop progress and timeupdate events as they are started before the error occurs.
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// NB: The MP4 player works differently and the error occurs before they are started.
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progressUpdates(false);
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timeUpdates(false);
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myStatus.error(); // Resets status except the src, and it sets srcError property.
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_ERROR, myStatus));
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}
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private function loadOpen(e:Event):void {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.DEBUG_MSG, myStatus, "loadOpen:"));
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myStatus.loading();
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if(myStatus.playOnLoad) {
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myStatus.playOnLoad = false; // Capture the flag
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_LOADSTART, myStatus)); // So loadstart event happens before play event occurs.
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play();
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} else {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_LOADSTART, myStatus));
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pause();
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}
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progressUpdates(true);
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}
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private function loadComplete(e:Event):void {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.DEBUG_MSG, myStatus, "loadComplete:"));
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myStatus.loaded();
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progressUpdates(false);
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progressEvent();
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}
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private function soundCompleteHandler(e:Event):void {
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myStatus.pausePosition = 0;
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myStatus.isPlaying = false;
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timeUpdates(false);
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timeUpdateEvent();
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_ENDED, myStatus));
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}
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private function progressUpdates(active:Boolean):void {
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// Using a timer rather than Flash's load progress event, because that event gave data at about 200Hz. The 10Hz timer is closer to HTML5 norm.
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if(active) {
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progressTimer.start();
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} else {
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progressTimer.stop();
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}
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}
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private function progressHandler(e:TimerEvent):void {
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progressEvent();
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}
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private function progressEvent():void {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.DEBUG_MSG, myStatus, "progressEvent:"));
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updateStatusValues();
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_PROGRESS, myStatus));
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}
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private function timeUpdates(active:Boolean):void {
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if(active) {
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timeUpdateTimer.start();
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} else {
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timeUpdateTimer.stop();
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}
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}
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private function timeUpdateHandler(e:TimerEvent):void {
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timeUpdateEvent();
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}
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private function timeUpdateEvent():void {
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updateStatusValues();
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_TIMEUPDATE, myStatus));
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}
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private function seeking(active:Boolean):void {
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if(active) {
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if(!myStatus.isSeeking) {
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seekingEvent();
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seekingTimer.start();
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}
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} else {
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seekingTimer.stop();
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}
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}
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private function seekingHandler(e:TimerEvent):void {
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if(myStatus.pausePosition <= getDuration()) {
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seekedEvent();
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seeking(false);
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if(myStatus.playOnSeek) {
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myStatus.playOnSeek = false; // Capture the flag.
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play();
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}
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} else if(myStatus.isLoaded && (myStatus.pausePosition > getDuration())) {
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// Illegal seek time
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seeking(false);
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seekedEvent();
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pause(0);
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}
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}
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private function seekingEvent():void {
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myStatus.isSeeking = true;
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updateStatusValues();
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_SEEKING, myStatus));
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}
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private function seekedEvent():void {
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myStatus.isSeeking = false;
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updateStatusValues();
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_SEEKED, myStatus));
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}
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public function load():Boolean {
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if(myStatus.loadRequired()) {
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myStatus.startingDownload();
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mySound.load(myRequest, myContext);
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return true;
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} else {
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return false;
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}
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}
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public function play(time:Number = NaN):Boolean {
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var wasPlaying:Boolean = myStatus.isPlaying;
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if(!isNaN(time) && myStatus.srcSet) {
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if(myStatus.isPlaying) {
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myChannel.stop();
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myStatus.isPlaying = false;
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}
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myStatus.pausePosition = time;
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}
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if(myStatus.isStartingDownload) {
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myStatus.playOnLoad = true; // Raise flag, captured in loadOpen()
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return true;
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} else if(myStatus.loadRequired()) {
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myStatus.playOnLoad = true; // Raise flag, captured in loadOpen()
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return load();
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} else if((myStatus.isLoading || myStatus.isLoaded) && !myStatus.isPlaying) {
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if(myStatus.isLoaded && myStatus.pausePosition > getDuration()) { // The time is invalid, ie., past the end.
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myStatus.pausePosition = 0;
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timeUpdates(false);
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timeUpdateEvent();
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if(wasPlaying) { // For when playing and then get a play(huge)
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_PAUSE, myStatus));
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}
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} else if(myStatus.pausePosition > getDuration()) {
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myStatus.playOnSeek = true;
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seeking(true);
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} else {
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myStatus.isPlaying = true; // Set immediately before playing. Could affects events.
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myChannel = mySound.play(myStatus.pausePosition);
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myChannel.soundTransform = myTransform;
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myChannel.addEventListener(Event.SOUND_COMPLETE, soundCompleteHandler);
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timeUpdates(true);
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if(!wasPlaying) {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_PLAY, myStatus));
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}
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}
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return true;
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} else {
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return false;
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}
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}
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public function pause(time:Number = NaN):Boolean {
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myStatus.playOnLoad = false; // Reset flag in case load/play issued immediately before this command, ie., before loadOpen() event.
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myStatus.playOnSeek = false; // Reset flag in case play(time) issued before the command and is still seeking to time set.
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var wasPlaying:Boolean = myStatus.isPlaying;
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// To avoid possible loops with timeupdate and pause(time). A pause() does not have the problem.
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var alreadyPausedAtTime:Boolean = false;
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if(!isNaN(time) && myStatus.pausePosition == time) {
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alreadyPausedAtTime = true;
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}
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if(myStatus.isPlaying) {
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myStatus.isPlaying = false;
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myChannel.stop();
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if(myChannel.position > 0) { // Required otherwise a fast play then pause causes myChannel.position to equal zero and not the correct value. ie., When it happens leave pausePosition alone.
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myStatus.pausePosition = myChannel.position;
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}
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}
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if(!isNaN(time) && myStatus.srcSet) {
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myStatus.pausePosition = time;
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}
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if(wasPlaying) {
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this.dispatchEvent(new JplayerEvent(JplayerEvent.JPLAYER_PAUSE, myStatus));
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}
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if(myStatus.isStartingDownload) {
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return true;
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} else if(myStatus.loadRequired()) {
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if(time > 0) { // We do not want the stop() command, which does pause(0), causing a load operation.
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return load();
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} else {
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return true; // Technically the pause(0) succeeded. ie., It did nothing, since nothing was required.
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}
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} else if(myStatus.isLoading || myStatus.isLoaded) {
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if(myStatus.isLoaded && myStatus.pausePosition > getDuration()) { // The time is invalid, ie., past the end.
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myStatus.pausePosition = 0;
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} else if(myStatus.pausePosition > getDuration()) {
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seeking(true);
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}
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timeUpdates(false);
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// Need to be careful with timeupdate event, otherwise a pause in a timeupdate event can cause a loop.
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// Neither pause() nor pause(time) will cause a timeupdate loop.
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if(wasPlaying || !isNaN(time) && !alreadyPausedAtTime) {
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timeUpdateEvent();
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}
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return true;
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} else {
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return false;
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}
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}
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public function playHead(percent:Number):Boolean {
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var time:Number = percent * getDuration() / 100;
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if(myStatus.isPlaying || myStatus.playOnLoad || myStatus.playOnSeek) {
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return play(time);
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} else {
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return pause(time);
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}
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}
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public function setVolume(v:Number):void {
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myStatus.volume = v;
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myTransform.volume = v;
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myChannel.soundTransform = myTransform;
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}
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private function updateStatusValues():void {
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myStatus.seekPercent = 100 * getLoadRatio();
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myStatus.currentTime = getCurrentTime();
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myStatus.currentPercentRelative = 100 * getCurrentRatioRel();
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myStatus.currentPercentAbsolute = 100 * getCurrentRatioAbs();
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myStatus.duration = getDuration();
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}
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public function getLoadRatio():Number {
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if((myStatus.isLoading || myStatus.isLoaded) && mySound.bytesTotal > 0) {
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return mySound.bytesLoaded / mySound.bytesTotal;
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} else {
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return 0;
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}
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}
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public function getDuration():Number {
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if(mySound.length > 0) {
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return mySound.length;
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} else {
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return 0;
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}
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}
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public function getCurrentTime():Number {
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if(myStatus.isPlaying) {
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return myChannel.position;
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} else {
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return myStatus.pausePosition;
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}
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}
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public function getCurrentRatioRel():Number {
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if((getDuration() > 0) && (getCurrentTime() <= getDuration())) {
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return getCurrentTime() / getDuration();
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} else {
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return 0;
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}
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}
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public function getCurrentRatioAbs():Number {
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return getCurrentRatioRel() * getLoadRatio();
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}
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}
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}
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