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# SoundManager2.as |
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¶ ## SoundManager 2: Javascript Sound for the Web http://schillmania.com/projects/soundmanager2/ Copyright © 2007, Scott Schiller. All rights reserved. Code licensed under the BSD License: http://www.schillmania.com/projects/soundmanager2/license.txt Flash 8 / ActionScript 2 version Compiling AS to Flash 8 SWF using MTASC (free compiler – http://www.mtasc.org/): mtasc -swf soundmanager2.swf -main -header 16:16:30 SoundManager2.as -version 8 ActionScript Sound class reference (Macromedia), documentation download: http://livedocs.macromedia.com/flash/8/ Previously-live URL: http://livedocs.macromedia.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00002668.html *** NOTE ON LOCAL FILE SYSTEM ACCESS *** Flash security allows local OR network access, but not both unless explicitly whitelisted/allowed by the flash player’s security settings. To enable in-flash messaging for troubleshooting, pass debug=1 in FlashVars (within object/embed code) SM2 will do this by default when soundManager.debugFlash = true. |
    import flash.external.ExternalInterface; // woo

    class SoundManager2 {

      static var app: SoundManager2;

      function SoundManager2() {

        var version = "V2.97a.20110918";
        var version_as = "(AS2/Flash 8)";
¶ Cross-domain security options HTML on foo.com loading .swf hosted on bar.com? Define your “HTML domain” here to allow JS+Flash communication to work. // allowxdomainscripting = true; // xdomain = “foo.com”; For all domains (possible security risk?), use xdomain = “”; which ends up as System.security.allowDomain(“”); When loading from HTTPS, use System.security.allowInsecureDomain(); See “allowDomain (security.allowDomain method)” in Flash 8/AS2 liveDocs documentation (AS2 reference –> classes –> security) download from http://livedocs.macromedia.com/flash/8/ Related AS3 documentation: http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/system/Security.html#allowDomain%28%29 |
        var allow_xdomain_scripting = false;
        var xdomain = "*";

        if (allow_xdomain_scripting && xdomain) {
          System.security.allowDomain(xdomain);
          version_as += ' - cross-domain enabled';
        }
¶ externalInterface references (for Javascript callbacks) |
        var baseJSController = "soundManager";
        var baseJSObject = baseJSController + ".sounds";
¶ internal objects |
        var sounds = []; // indexed string array
        var soundObjects = []; // associative Sound() object array
        var timer = null;
        var pollingEnabled = false; // polling (timer) flag - disabled by default, enabled by JS->Flash call
        var debugEnabled = true; // Flash debug output enabled by default, disabled by JS call
        var flashDebugEnabled = false; // debug output to flash movie, off by default
        var didSandboxMessage = false;
        var caughtFatal = false;
¶ for flash text output, debugging etc. |
        var _messages = [];
        var _messageObj = null;
        flashDebugEnabled = (_root.debug == 1);
¶ display stuffs |
        Stage.scaleMode = 'noScale';
        Stage.align = 'TL';
¶ context menu item with version info |
        var doNothing = function() {}

        var sm2Menu:ContextMenu = new ContextMenu();
        var sm2MenuItem:ContextMenuItem = new ContextMenuItem('SoundManager ' + version + ' ' + version_as, doNothing);
        sm2MenuItem.enabled = false;
        sm2Menu.customItems.push(sm2MenuItem);
        _root.menu = sm2Menu;

        var writeDebug = function(s) {
¶ |
          if (!debugEnabled) return false;
          ExternalInterface.call(baseJSController + "['_writeDebug']", "(Flash): " + s);
¶ |
        }

        var flashDebug = function(messageText) {
¶ |
          _messages.push(messageText);
          if (!flashDebugEnabled) {
            return false;
          }
          var sans = new TextFormat();
          sans.size = 12;
          sans.font = "Arial";
¶ 320x240 if no stage dimensions (happens in IE, apparently 0 before stage resize event fires.) |
          var w = Stage.width?Stage.width:320;
          var h = Stage.height?Stage.height:240;
          if (!_messageObj) {
            _messageObj = _root.createTextField("_messageObj", 0, 0, 0, w, h);
            _messageObj.x = 0;
            _messageObj.y = 0;
            _messageObj.multiline = true;
            _messageObj.html = true;
            _messageObj.wordWrap = true;
            _messageObj.align = 'left';
            _messageObj.autoSize = false;
          }
          _messageObj.htmlText = _messages.join('\n');
          _messageObj.setTextFormat(sans);
          _messageObj.width = w;
          _messageObj.height = h;
¶ |
        }

        var _externalInterfaceTest = function(isFirstCall) {
          var sandboxType = System.security['sandboxType'];
          try {
            if (isFirstCall) {
              flashDebug('Testing Flash -&gt; JS...')
              if (!didSandboxMessage && sandboxType != 'remote' && sandboxType != 'localTrusted') {
                didSandboxMessage = true;
                flashDebug('<br><b>Fatal: Security sandbox error: Got "' + sandboxType + '", expected "remote" or "localTrusted".<br>Additional security permissions need to be granted.<br>See <a href="http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html">flash security settings panel</a> for non-HTTP, eg. file:// use.</b><br>http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html<br><br>You may also be able to right-click this movie and choose from the menu: <br>"Global Settings" -> "Advanced" tab -> "Trusted Location Settings"<br>');
              }
              var d = new Date();
              ExternalInterface.call(baseJSController + "._externalInterfaceOK", d.getTime());
              if (!didSandboxMessage) {
                flashDebug('Flash -&gt; JS OK');
              }
            } else {
              writeDebug('SM2 SWF ' + version + ' ' + version_as);
              flashDebug('JS -&gt; Flash OK');
              writeDebug('JS to/from Flash OK');
              ExternalInterface.call(baseJSController + "._setSandboxType", sandboxType);
            }
          } catch(e) {
            flashDebug(e.toString());
            if (!caughtFatal) {
              caughtFatal = true;
            }
            return false;
          }
          return true; // to verify that a call from JS to here, works. (eg. JS receives "true", thus OK.)
        }

        var _disableDebug = function() {
¶ prevent future debug calls from Flash going to client (maybe improve performance) |
          writeDebug('_disableDebug()');
          debugEnabled = false;
        }

        var checkProgress = function() {
          var bL = 0;
          var bT = 0;
          var nD = 0;
          var nP = 0;
          var oSound = null;
          for (var i = 0, j = sounds.length; i < j; i++) {
            oSound = soundObjects[sounds[i]];
            bL = oSound.getBytesLoaded();
            bT = oSound.getBytesTotal();
            nD = oSound.duration || 0; // can sometimes be null with short MP3s? Wack.
            nP = oSound.position;
            if (bL && bT && bL != oSound.lastValues.bytes) {
              oSound.lastValues.bytes = bL;
              ExternalInterface.call(baseJSObject + "['" + oSound.sID + "']._whileloading", bL, bT, nD);
            }
            if (typeof nP != 'undefined' && nP != oSound.lastValues.position) {
              oSound.lastValues.position = nP;
              ExternalInterface.call(baseJSObject + "['" + oSound.sID + "']._whileplaying", nP);
¶ if position changed, check for near-end |
            }
          }
        }

        var onLoad = function(bSuccess) {
          checkProgress(); // ensure progress stats are up-to-date
¶ force duration update (doesn’t seem to be always accurate) |
          ExternalInterface.call(baseJSObject + "['" + this.sID + "']._whileloading", this.getBytesLoaded(), this.getBytesTotal(), this.duration);
          ExternalInterface.call(baseJSObject + "['" + this.sID + "']._onload", this.duration > 0 ? 1 : 0); // bSuccess doesn't always seem to work, so check MP3 duration instead.
        }

        var onID3 = function() {
¶ ## —– NOTE: BUGGY? —– TODO: Investigate holes in ID3 parsing – for some reason, Album will be populated with Date if empty and date is provided. (?) ID3V1 seem to parse OK, but “holes” / blanks in ID3V2 data seem to get messed up (eg. missing album gets filled with date.) iTunes issues: onID3 was not called with a test MP3 encoded with iTunes 7.01, and what appeared to be valid ID3V2 data. May be related to thumbnails for album art included in MP3 file by iTunes. See http://mabblog.com/blog/?p=33 |
          var id3Data = [];
          var id3Props = [];
          for (var prop in this.id3) {
            id3Props.push(prop);
            id3Data.push(this.id3[prop]);
¶ writeDebug(‘id3[’+prop+‘]: ’+this.id3[prop]); |
          }
          ExternalInterface.call(baseJSObject + "['" + this.sID + "']._onid3", id3Props, id3Data);
¶ unhook own event handler, prevent second call (can fire twice as data is received – ID3V2 at beginning, ID3V1 at end.) Therefore if ID3V2 data is received, ID3V1 is ignored. |
          soundObjects[this.sID].onID3 = null;
        }

        var registerOnComplete = function(sID) {
          soundObjects[sID].onSoundComplete = function() {
            checkProgress();
            ExternalInterface.call(baseJSObject + "['" + sID + "']._onfinish");
          }
        }

        var _setPosition = function(sID, nSecOffset, isPaused) {
          var s = soundObjects[sID];
¶ writeDebug(‘_setPosition()’); |
          s.lastValues.position = s.position;
          if (s.lastValues.loops > 1 && nSecOffset != 0) {
            writeDebug('Warning: Looping functionality being disabled due to Flash limitation.');
            s.lastValues.loops = 1;
          }
          s.start(nSecOffset, s.lastValues.nLoops || 1); // start playing at new position
          if (isPaused) {
            s.stop();
          }
        }

        var _load = function(sID, sURL, bStream, bAutoPlay, bCheckPolicyFile) {
¶ writeDebug(‘_load(): ’+sID+‘, ’+sURL+‘, ’+bStream+‘, ’+bAutoPlay); |
          if (typeof bAutoPlay == 'undefined') {
            bAutoPlay = false;
          }
          if (typeof bStream == 'undefined') {
            bStream = true;
          }
          if (typeof bCheckPolicyFile == 'undefined') {
            bCheckPolicyFile = false;
          }
¶ writeDebug(‘bStream: ’+bStream); writeDebug(‘bAutoPlay: ’+bAutoPlay); checkProgress(); |
          var s = soundObjects[sID];
          s.onID3 = onID3;
          s.onLoad = onLoad;
          s.loaded = true;
          s.checkPolicyFile = bCheckPolicyFile;
          s.loadSound(sURL, bStream);
          if (bAutoPlay != true) {
            s.stop(); // prevent default auto-play behaviour
          } else {
            writeDebug('auto-play allowed');
          }
          registerOnComplete(sID);
        }

        var _unload = function(sID, sURL) {
¶ effectively “stop” loading by loading a tiny MP3 |
          var s = soundObjects[sID];
          s.onID3 = null;
          s.onLoad = null;
          s.loaded = false;
¶ ensure position is reset, if unload fails |
          s.start(0,1);
          s.stop();
          s.loadSound(sURL, true);
          s.stop(); // prevent auto-play
        }

        var _createSound = function(sID, loops, checkPolicyFile) {
          var s = new Sound();
          if (!soundObjects[sID]) {
            sounds.push(sID);
          }
          soundObjects[sID] = s;
          s.setVolume(100);
          s.sID = sID;
          s.paused = false;
          s.loaded = false;
          s.checkPolicyFile = checkPolicyFile;
          s.lastValues = {
            bytes: 0,
            position: 0,
            nLoops: loops||1
          };
        }

        var _destroySound = function(sID) {
¶ for the power of garbage collection! .. er, Greyskull! |
          var s = (soundObjects[sID] || null);
          if (!s) {
            return false;
          }
          for (var i = 0; i < sounds.length; i++) {
            if (sounds[i] == sID) {
              sounds.splice(i, 1);
              break;
            }
          }
          s = null;
          delete soundObjects[sID];
        }

        var _stop = function(sID, bStopAll) {
¶ stop this particular instance (or “all”, based on parameter) |
          if (bStopAll) {
            _root.stop();
          } else {
            soundObjects[sID].stop();
            soundObjects[sID].paused = false;
          }
        }

        var _start = function(sID, nLoops, nMsecOffset) {
¶ writeDebug(‘_start: ’ + sID + ‘, loops: ’ + nLoops + ‘, nMsecOffset: ’ + nMsecOffset); |
          registerOnComplete();
          var s = soundObjects[sID];
          s.lastValues.paused = false; // reset pause if applicable
          s.lastValues.nLoops = (nLoops || 1);
          s.start(nMsecOffset, nLoops);
        }

        var _pause = function(sID) {
¶ writeDebug(‘_pause()’); |
          var s = soundObjects[sID];
          if (!s.paused) {
¶ reference current position, stop sound |
            s.paused = true;
            s.lastValues.position = s.position;
¶ writeDebug(‘_pause(): position: ’+s.lastValues.position); |
            s.stop();
          } else {
¶ resume playing from last position writeDebug(‘resuming – playing at ’+s.lastValues.position+‘, ’+s.lastValues.nLoops+‘ times’); |
            s.paused = false;
            s.start(s.lastValues.position / 1000, s.lastValues.nLoops);
          }
        }

        var _setPan = function(sID, nPan) {
          soundObjects[sID].setPan(nPan);
        }

        var _setVolume = function(sID, nVol) {
          soundObjects[sID].setVolume(nVol);
        }

        var _setPolling = function(bPolling, timerInterval) {
          if (typeof timerInterval === 'undefined') {
            timerInterval = 50;
          }
          pollingEnabled = bPolling;
          if (timer == null && pollingEnabled) {
            writeDebug('Enabling polling, ' + timerInterval + ' ms interval');
            timer = setInterval(checkProgress, timerInterval);
          } else if (timer && !pollingEnabled) {
            writeDebug('Disabling polling');
            clearInterval(timer);
            timer = null;
          }
        }

        var _init = function() {
¶ OK now stuff should be available |
          try {
            flashDebug('Adding ExternalInterface callbacks...');
            ExternalInterface.addCallback('_load', this, _load);
            ExternalInterface.addCallback('_unload', this, _unload);
            ExternalInterface.addCallback('_stop', this, _stop);
            ExternalInterface.addCallback('_start', this, _start);
            ExternalInterface.addCallback('_pause', this, _pause);
            ExternalInterface.addCallback('_setPosition', this, _setPosition);
            ExternalInterface.addCallback('_setPan', this, _setPan);
            ExternalInterface.addCallback('_setVolume', this, _setVolume);
            ExternalInterface.addCallback('_setPolling', this, _setPolling);
            ExternalInterface.addCallback('_externalInterfaceTest', this, _externalInterfaceTest);
            ExternalInterface.addCallback('_disableDebug', this, _disableDebug);
            ExternalInterface.addCallback('_createSound', this, _createSound);
            ExternalInterface.addCallback('_destroySound', this, _destroySound);
          } catch(e) {
            flashDebug('Fatal: ExternalInterface error: ' + e.toString());
          }
¶ try to talk to JS, do init etc. |
          _externalInterfaceTest(true);
¶ flashDebug(‘Init OK’); |
        }

        flashDebug('SM2 SWF ' + version + ' ' + version_as);

        if (ExternalInterface.available) {
          flashDebug('ExternalInterface available');
          _init();
        } else {
¶ d'oh! – may be from a corrupt install, ancient (pre-Netscape 6?) browser etc. |
          flashDebug('Fatal: ExternalInterface (Flash &lt;-&gt; JS) not available');
        }

      } // SoundManager2()
¶ entry point |
      static function main(mc) {
        app = new SoundManager2();
      }

    }