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# 360player.js |
--- | ---
¶ ## SoundManager 2 Demo: 360-degree / “donut player” http://schillmania.com/projects/soundmanager2/ An inline player with a circular UI. Based on the original SM2 inline player. Inspired by Apple’s preview feature in the iTunes music store (iPhone), among others. Requires SoundManager 2 Javascript API. Also uses Bernie’s Better Animation Class (BSD): http://www.berniecode.com/writing/animator.html |
    /*jslint white: false, onevar: true, undef: true, nomen: false, eqeqeq: true, plusplus: false, bitwise: true, regexp: false, newcap: true, immed: true */
    /*global document, window, soundManager, navigator */

    var threeSixtyPlayer, // instance
        ThreeSixtyPlayer; // constructor

    (function(window) {

    function ThreeSixtyPlayer() {

      var self = this,
          pl = this,
          sm = soundManager, // soundManager instance
          uA = navigator.userAgent,
          isIE = (uA.match(/msie/i)),
          isOpera = (uA.match(/opera/i)),
          isSafari = (uA.match(/safari/i)),
          isChrome = (uA.match(/chrome/i)),
          isFirefox = (uA.match(/firefox/i)),
          isTouchDevice = (uA.match(/ipad|iphone/i)),
          hasRealCanvas = (typeof window.G_vmlCanvasManager === 'undefined' && typeof document.createElement('canvas').getContext('2d') !== 'undefined'),
¶ I dunno what Opera doesn’t like about this. I’m probably doing it wrong. |
          fullCircle = (isOpera||isChrome?359.9:360);
¶ CSS class for ignoring MP3 links |
      this.excludeClass = 'threesixty-exclude';
      this.links = [];
      this.sounds = [];
      this.soundsByURL = [];
      this.indexByURL = [];
      this.lastSound = null;
      this.lastTouchedSound = null;
      this.soundCount = 0;
      this.oUITemplate = null;
      this.oUIImageMap = null;
      this.vuMeter = null;
      this.callbackCount = 0;
      this.peakDataHistory = [];
¶ 360player configuration options |
      this.config = {

        playNext: false,   // stop after one sound, or play through list until end
        autoPlay: false,   // start playing the first sound right away
        allowMultiple: false,  // let many sounds play at once (false = only one sound playing at a time)
        loadRingColor: '#ccc', // how much has loaded
        playRingColor: '#000', // how much has played
        backgroundRingColor: '#eee', // color shown underneath load + play ("not yet loaded" color)
¶ optional segment/annotation (metadata) stuff.. |
        segmentRingColor: 'rgba(255,255,255,0.33)', // metadata/annotation (segment) colors
        segmentRingColorAlt: 'rgba(0,0,0,0.1)',
        loadRingColorMetadata: '#ddd', // "annotations" load color
        playRingColorMetadata: 'rgba(128,192,256,0.9)', // how much has played when metadata is present

        circleDiameter: null, // set dynamically according to values from CSS
        circleRadius: null,
        animDuration: 500,
        animTransition: window.Animator.tx.bouncy, // http://www.berniecode.com/writing/animator.html
        showHMSTime: false, // hours:minutes:seconds vs. seconds-only
        scaleFont: true,  // also set the font size (if possible) while animating the circle
¶ optional: spectrum or EQ graph in canvas (not supported in IE <9, too slow via ExCanvas) |
        useWaveformData: false,
        waveformDataColor: '#0099ff',
        waveformDataDownsample: 3, // use only one in X (of a set of 256 values) - 1 means all 256
        waveformDataOutside: false,
        waveformDataConstrain: false, // if true, +ve values only - keep within inside circle
        waveformDataLineRatio: 0.64,
¶ “spectrum frequency” option |
        useEQData: false,
        eqDataColor: '#339933',
        eqDataDownsample: 4, // use only one in X (of 256 values)
        eqDataOutside: true,
        eqDataLineRatio: 0.54,
¶ enable “amplifier” (canvas pulses like a speaker) effect |
        usePeakData: true,
        peakDataColor: '#ff33ff',
        peakDataOutside: true,
        peakDataLineRatio: 0.5,

        useAmplifier: true, // "pulse" like a speaker

        fontSizeMax: null, // set according to CSS

        scaleArcWidth: 1,  // thickness factor of playback progress ring

        useFavIcon: false // Experimental (also requires usePeakData: true).. Try to draw a "VU Meter" in the favicon area, if browser supports it (Firefox + Opera as of 2009)

      };

      this.css = {
¶ CSS class names appended to link during various states |
        sDefault: 'sm2_link', // default state
        sBuffering: 'sm2_buffering',
        sPlaying: 'sm2_playing',
        sPaused: 'sm2_paused'

      };

      this.addEventHandler = (typeof window.addEventListener !== 'undefined' ? function(o, evtName, evtHandler) {
        return o.addEventListener(evtName,evtHandler,false);
      } : function(o, evtName, evtHandler) {
        o.attachEvent('on'+evtName,evtHandler);
      });

      this.removeEventHandler = (typeof window.removeEventListener !== 'undefined' ? function(o, evtName, evtHandler) {
        return o.removeEventListener(evtName,evtHandler,false);
      } : function(o, evtName, evtHandler) {
        return o.detachEvent('on'+evtName,evtHandler);
      });

      this.hasClass = function(o,cStr) {
        return typeof(o.className)!=='undefined'?o.className.match(new RegExp('(\\s|^)'+cStr+'(\\s|$)')):false;
      };

      this.addClass = function(o,cStr) {

        if (!o || !cStr || self.hasClass(o,cStr)) {
          return false;
        }
        o.className = (o.className?o.className+' ':'')+cStr;

      };

      this.removeClass = function(o,cStr) {

        if (!o || !cStr || !self.hasClass(o,cStr)) {
          return false;
        }
        o.className = o.className.replace(new RegExp('( '+cStr+')|('+cStr+')','g'),'');

      };

      this.getElementsByClassName = function(className,tagNames,oParent) {

        var doc = (oParent||document),
            matches = [], i,j, nodes = [];
        if (typeof tagNames !== 'undefined' && typeof tagNames !== 'string') {
          for (i=tagNames.length; i--;) {
            if (!nodes || !nodes[tagNames[i]]) {
              nodes[tagNames[i]] = doc.getElementsByTagName(tagNames[i]);
            }
          }
        } else if (tagNames) {
          nodes = doc.getElementsByTagName(tagNames);
        } else {
          nodes = doc.all||doc.getElementsByTagName('*');
        }
        if (typeof(tagNames)!=='string') {
          for (i=tagNames.length; i--;) {
            for (j=nodes[tagNames[i]].length; j--;) {
              if (self.hasClass(nodes[tagNames[i]][j],className)) {
                matches.push(nodes[tagNames[i]][j]);
              }
            }
          }
        } else {
          for (i=0; i<nodes.length; i++) {
            if (self.hasClass(nodes[i],className)) {
              matches.push(nodes[i]);
            }
          }
        }
        return matches;

      };

      this.getParentByNodeName = function(oChild,sParentNodeName) {

        if (!oChild || !sParentNodeName) {
          return false;
        }
        sParentNodeName = sParentNodeName.toLowerCase();
        while (oChild.parentNode && sParentNodeName !== oChild.parentNode.nodeName.toLowerCase()) {
          oChild = oChild.parentNode;
        }
        return (oChild.parentNode && sParentNodeName === oChild.parentNode.nodeName.toLowerCase()?oChild.parentNode:null);

      };

      this.getParentByClassName = function(oChild,sParentClassName) {

        if (!oChild || !sParentClassName) {
          return false;
        }
        while (oChild.parentNode && !self.hasClass(oChild.parentNode,sParentClassName)) {
          oChild = oChild.parentNode;
        }
        return (oChild.parentNode && self.hasClass(oChild.parentNode,sParentClassName)?oChild.parentNode:null);

      };

      this.getSoundByURL = function(sURL) {
        return (typeof self.soundsByURL[sURL] !== 'undefined'?self.soundsByURL[sURL]:null);
      };

      this.isChildOfNode = function(o,sNodeName) {

        if (!o || !o.parentNode) {
          return false;
        }
        sNodeName = sNodeName.toLowerCase();
        do {
          o = o.parentNode;
        } while (o && o.parentNode && o.nodeName.toLowerCase() !== sNodeName);
        return (o && o.nodeName.toLowerCase() === sNodeName?o:null);

      };

      this.isChildOfClass = function(oChild,oClass) {

        if (!oChild || !oClass) {
          return false;
        }
        while (oChild.parentNode && !self.hasClass(oChild,oClass)) {
          oChild = self.findParent(oChild);
        }
        return (self.hasClass(oChild,oClass));

      };

      this.findParent = function(o) {

        if (!o || !o.parentNode) {
          return false;
        }
        o = o.parentNode;
        if (o.nodeType === 2) {
          while (o && o.parentNode && o.parentNode.nodeType === 2) {
            o = o.parentNode;
          }
        }
        return o;

      };

      this.getStyle = function(o,sProp) {
¶ http://www.quirksmode.org/dom/getstyles.html |
        try {
          if (o.currentStyle) {
            return o.currentStyle[sProp];
          } else if (window.getComputedStyle) {
            return document.defaultView.getComputedStyle(o,null).getPropertyValue(sProp);
          }
        } catch(e) {
¶ oh well |
        }
        return null;

      };

      this.findXY = function(obj) {

        var curleft = 0, curtop = 0;
        do {
          curleft += obj.offsetLeft;
          curtop += obj.offsetTop;
        } while (!!(obj = obj.offsetParent));
        return [curleft,curtop];

      };

      this.getMouseXY = function(e) {
¶ http://www.quirksmode.org/js/events_properties.html |
        e = e?e:window.event;
        if (isTouchDevice && e.touches) {
          e = e.touches[0];
        }
        if (e.pageX || e.pageY) {
          return [e.pageX,e.pageY];
        } else if (e.clientX || e.clientY) {
          return [e.clientX+self.getScrollLeft(),e.clientY+self.getScrollTop()];
        }

      };

      this.getScrollLeft = function() {
        return (document.body.scrollLeft+document.documentElement.scrollLeft);
      };

      this.getScrollTop = function() {
        return (document.body.scrollTop+document.documentElement.scrollTop);
      };

      this.events = {
¶ handlers for sound events as they’re started/stopped/played |
        play: function() {
          pl.removeClass(this._360data.oUIBox,this._360data.className);
          this._360data.className = pl.css.sPlaying;
          pl.addClass(this._360data.oUIBox,this._360data.className);
          self.fanOut(this);
        },

        stop: function() {
          pl.removeClass(this._360data.oUIBox,this._360data.className);
          this._360data.className = '';
          self.fanIn(this);
        },

        pause: function() {
          pl.removeClass(this._360data.oUIBox,this._360data.className);
          this._360data.className = pl.css.sPaused;
          pl.addClass(this._360data.oUIBox,this._360data.className);
        },

        resume: function() {
          pl.removeClass(this._360data.oUIBox,this._360data.className);
          this._360data.className = pl.css.sPlaying;
          pl.addClass(this._360data.oUIBox,this._360data.className);
        },

        finish: function() {
          var nextLink;
          pl.removeClass(this._360data.oUIBox,this._360data.className);
          this._360data.className = '';
¶ self.clearCanvas(this._360data.oCanvas); |
          this._360data.didFinish = true; // so fan draws full circle
          self.fanIn(this);
          if (pl.config.playNext) {
            nextLink = (pl.indexByURL[this._360data.oLink.href]+1);
            if (nextLink<pl.links.length) {
              pl.handleClick({'target':pl.links[nextLink]});
            }
          }
        },

        whileloading: function() {
          if (this.paused) {
            self.updatePlaying.apply(this);
          }
        },

        whileplaying: function() {
          self.updatePlaying.apply(this);
          this._360data.fps++;
        },

        bufferchange: function() {
          if (this.isBuffering) {
            pl.addClass(this._360data.oUIBox,pl.css.sBuffering);
          } else {
            pl.removeClass(this._360data.oUIBox,pl.css.sBuffering);
          }
        }

      };

      this.stopEvent = function(e) {

       if (typeof e !== 'undefined' && typeof e.preventDefault !== 'undefined') {
          e.preventDefault();
        } else if (typeof window.event !== 'undefined' && typeof window.event.returnValue !== 'undefined') {
          window.event.returnValue = false;
        }
        return false;

      };

      this.getTheDamnLink = (isIE)?function(e) {
¶ I really didn’t want to have to do this. |
        return (e && e.target?e.target:window.event.srcElement);
      }:function(e) {
        return e.target;
      };

      this.handleClick = function(e) {
¶ a sound link was clicked |
        if (e.button > 1) {
¶ only catch left-clicks |
          return true;
        }

        var o = self.getTheDamnLink(e),
            sURL, soundURL, thisSound, oContainer, has_vis, diameter;

        if (o.nodeName.toLowerCase() !== 'a') {
          o = self.isChildOfNode(o,'a');
          if (!o) {
            return true;
          }
        }

        if (!self.isChildOfClass(o,'ui360')) {
¶ not a link we’re interested in |
          return true;
        }

        sURL = o.getAttribute('href');

        if (!o.href || !sm.canPlayLink(o) || self.hasClass(o,self.excludeClass)) {
          return true; // pass-thru for non-MP3/non-links
        }

        sm._writeDebug('handleClick()');
        soundURL = (o.href);
        thisSound = self.getSoundByURL(soundURL);

        if (thisSound) {
¶ already exists |
          if (thisSound === self.lastSound) {
¶ and was playing (or paused) |
            thisSound.togglePause();
          } else {
¶ different sound |
            thisSound.togglePause(); // start playing current
            sm._writeDebug('sound different than last sound: '+self.lastSound.sID);
            if (!self.config.allowMultiple && self.lastSound) {
              self.stopSound(self.lastSound);
            }
          }

        } else {
¶ append some dom shiz, make noise |
          oContainer = o.parentNode;
          has_vis = (self.getElementsByClassName('ui360-vis','div',oContainer.parentNode).length);
¶ create sound |
          thisSound = sm.createSound({
           id:'ui360Sound'+(self.soundCount++),
           url:soundURL,
           onplay:self.events.play,
           onstop:self.events.stop,
           onpause:self.events.pause,
           onresume:self.events.resume,
           onfinish:self.events.finish,
           onbufferchange:self.events.bufferchange,
           whileloading:self.events.whileloading,
           whileplaying:self.events.whileplaying,
           useWaveformData:(has_vis && self.config.useWaveformData),
           useEQData:(has_vis && self.config.useEQData),
           usePeakData:(has_vis && self.config.usePeakData)
          });
¶ tack on some custom data |
          diameter = parseInt(self.getElementsByClassName('sm2-360ui','div',oContainer)[0].offsetWidth, 10);

          thisSound._360data = {
            oUI360: self.getParentByClassName(o,'ui360'), // the (whole) entire container
            oLink: o, // DOM node for reference within SM2 object event handlers
            className: self.css.sPlaying,
            oUIBox: self.getElementsByClassName('sm2-360ui','div',oContainer)[0],
            oCanvas: self.getElementsByClassName('sm2-canvas','canvas',oContainer)[0],
            oButton: self.getElementsByClassName('sm2-360btn','span',oContainer)[0],
            oTiming: self.getElementsByClassName('sm2-timing','div',oContainer)[0],
            oCover: self.getElementsByClassName('sm2-cover','div',oContainer)[0],
            circleDiameter: diameter,
            circleRadius: diameter/2,
            lastTime: null,
            didFinish: null,
            pauseCount:0,
            radius:0,
            fontSize: 1,
            fontSizeMax: self.config.fontSizeMax,
            scaleFont: (has_vis && self.config.scaleFont),
            showHMSTime: has_vis,
            amplifier: (has_vis && self.config.usePeakData?0.9:1), // TODO: x1 if not being used, else use dynamic "how much to amplify by" value
            radiusMax: diameter*0.175, // circle radius
            width:0,
            widthMax: diameter*0.4, // width of the outer ring
            lastValues: {
              bytesLoaded: 0,
              bytesTotal: 0,
              position: 0,
              durationEstimate: 0
            }, // used to track "last good known" values before sound finish/reset for anim
            animating: false,
            oAnim: new window.Animator({
              duration: self.config.animDuration,
              transition:self.config.animTransition,
              onComplete: function() {
¶ var thisSound = this; thisSound._360data.didFinish = false; // reset full circle |
              }
            }),
            oAnimProgress: function(nProgress) {
              var thisSound = this;
              thisSound._360data.radius = parseInt(thisSound._360data.radiusMax*thisSound._360data.amplifier*nProgress, 10);
              thisSound._360data.width = parseInt(thisSound._360data.widthMax*thisSound._360data.amplifier*nProgress, 10);
              if (thisSound._360data.scaleFont && thisSound._360data.fontSizeMax !== null) {
                thisSound._360data.oTiming.style.fontSize = parseInt(Math.max(1,thisSound._360data.fontSizeMax*nProgress), 10)+'px';
                thisSound._360data.oTiming.style.opacity = nProgress;
              }
              if (thisSound.paused || thisSound.playState === 0 || thisSound._360data.lastValues.bytesLoaded === 0 || thisSound._360data.lastValues.position === 0) {
                self.updatePlaying.apply(thisSound);
              }
            },
            fps: 0
          };
¶ “Metadata” (annotations) |
          if (typeof self.Metadata !== 'undefined' && self.getElementsByClassName('metadata','div',thisSound._360data.oUI360).length) {
            thisSound._360data.metadata = new self.Metadata(thisSound,self);
          }
¶ minimize ze font |
          if (thisSound._360data.scaleFont && thisSound._360data.fontSizeMax !== null) {
            thisSound._360data.oTiming.style.fontSize = '1px';
          }
¶ set up ze animation |
          thisSound._360data.oAnim.addSubject(thisSound._360data.oAnimProgress,thisSound);
¶ animate the radius out nice |
          self.refreshCoords(thisSound);

          self.updatePlaying.apply(thisSound);

          self.soundsByURL[soundURL] = thisSound;
          self.sounds.push(thisSound);
          if (!self.config.allowMultiple && self.lastSound) {
            self.stopSound(self.lastSound);
          }
          thisSound.play();

        }

        self.lastSound = thisSound; // reference for next call

        if (typeof e !== 'undefined' && typeof e.preventDefault !== 'undefined') {
          e.preventDefault();
        } else if (typeof window.event !== 'undefined') {
          window.event.returnValue = false;
        }
        return false;

      };

      this.fanOut = function(oSound) {

         var thisSound = oSound;
         if (thisSound._360data.animating === 1) {
           return false;
         }
         thisSound._360data.animating = 0;
         soundManager._writeDebug('fanOut: '+thisSound.sID+': '+thisSound._360data.oLink.href);
         thisSound._360data.oAnim.seekTo(1); // play to end
         window.setTimeout(function() {
¶ oncomplete hack |
           thisSound._360data.animating = 0;
         },self.config.animDuration+20);

      };

      this.fanIn = function(oSound) {

         var thisSound = oSound;
         if (thisSound._360data.animating === -1) {
           return false;
         }
         thisSound._360data.animating = -1;
         soundManager._writeDebug('fanIn: '+thisSound.sID+': '+thisSound._360data.oLink.href);
¶ massive hack |
         thisSound._360data.oAnim.seekTo(0); // play to end
         window.setTimeout(function() {
¶ reset full 360 fill after animation has completed (oncomplete hack) |
           thisSound._360data.didFinish = false;
           thisSound._360data.animating = 0;
           self.resetLastValues(thisSound);
         }, self.config.animDuration+20);

      };

      this.resetLastValues = function(oSound) {
        oSound._360data.lastValues.position = 0;
      };

      this.refreshCoords = function(thisSound) {

        thisSound._360data.canvasXY = self.findXY(thisSound._360data.oCanvas);
        thisSound._360data.canvasMid = [thisSound._360data.circleRadius,thisSound._360data.circleRadius];
        thisSound._360data.canvasMidXY = [thisSound._360data.canvasXY[0]+thisSound._360data.canvasMid[0], thisSound._360data.canvasXY[1]+thisSound._360data.canvasMid[1]];

      };

      this.stopSound = function(oSound) {

        soundManager._writeDebug('stopSound: '+oSound.sID);
        soundManager.stop(oSound.sID);
        if (!isTouchDevice) { // iOS 4.2+ security blocks onfinish() -> playNext() if we set a .src in-between(?)
          soundManager.unload(oSound.sID);
        }

      };

      this.buttonClick = function(e) {

        var o = e?(e.target?e.target:e.srcElement):window.event.srcElement;
        self.handleClick({target:self.getParentByClassName(o,'sm2-360ui').nextSibling}); // link next to the nodes we inserted
        return false;

      };

      this.buttonMouseDown = function(e) {
¶ user might decide to drag from here watch for mouse move |
        if (!isTouchDevice) {
          document.onmousemove = function(e) {
¶ should be boundary-checked, really (eg. move 3px first?) |
            self.mouseDown(e);
          };
        } else {
          self.addEventHandler(document,'touchmove',self.mouseDown);
        }
        self.stopEvent(e);
        return false;

      };

      this.mouseDown = function(e) {

        if (!isTouchDevice && e.button > 1) {
          return true; // ignore non-left-click
        }

        if (!self.lastSound) {
          self.stopEvent(e);
          return false;
        }

        var evt = e?e:window.event,
            target, thisSound, oData;

        if (isTouchDevice && evt.touches) {
          evt = evt.touches[0];
        }
        target = (evt.target||evt.srcElement);

        thisSound = self.getSoundByURL(self.getElementsByClassName('sm2_link','a',self.getParentByClassName(target,'ui360'))[0].href); // self.lastSound; // TODO: In multiple sound case, figure out which sound is involved etc.
¶ just in case, update coordinates (maybe the element moved since last time.) |
        self.lastTouchedSound = thisSound;
        self.refreshCoords(thisSound);
        oData = thisSound._360data;
        self.addClass(oData.oUIBox,'sm2_dragging');
        oData.pauseCount = (self.lastTouchedSound.paused?1:0);
¶ self.lastSound.pause(); |
        self.mmh(e?e:window.event);

        if (isTouchDevice) {
          self.removeEventHandler(document,'touchmove',self.mouseDown);
          self.addEventHandler(document,'touchmove',self.mmh);
          self.addEventHandler(document,'touchend',self.mouseUp);
        } else {
¶ incredibly old-skool. TODO: Modernize. |
          document.onmousemove = self.mmh;
          document.onmouseup = self.mouseUp;
        }

        self.stopEvent(e);
        return false;

      };

      this.mouseUp = function(e) {

        var oData = self.lastTouchedSound._360data;
        self.removeClass(oData.oUIBox,'sm2_dragging');
        if (oData.pauseCount === 0) {
          self.lastTouchedSound.resume();
        }
        if (!isTouchDevice) {
          document.onmousemove = null;
          document.onmouseup = null;
        } else {
          self.removeEventHandler(document,'touchmove',self.mmh);
          self.removeEventHandler(document,'touchend',self.mouseUP);
        }

      };

      this.mmh = function(e) {

        if (typeof e === 'undefined') {
          e = window.event;
        }
        var oSound = self.lastTouchedSound,
            coords = self.getMouseXY(e),
            x = coords[0],
            y = coords[1],
            deltaX = x-oSound._360data.canvasMidXY[0],
            deltaY = y-oSound._360data.canvasMidXY[1],
            angle = Math.floor(fullCircle-(self.rad2deg(Math.atan2(deltaX,deltaY))+180));

        oSound.setPosition(oSound.durationEstimate*(angle/fullCircle));
        self.stopEvent(e);
        return false;

      };
¶ assignMouseDown(); |
      this.drawSolidArc = function(oCanvas, color, radius, width, radians, startAngle, noClear) {
¶ thank you, http://www.snipersystems.co.nz/community/polarclock/tutorial.html |
        var x = radius,
            y = radius,
            canvas = oCanvas,
            ctx, innerRadius, doesntLikeZero, endPoint;

        if (canvas.getContext){
¶ use getContext to use the canvas for drawing |
          ctx = canvas.getContext('2d');
        }
¶ re-assign canvas as the actual context |
        oCanvas = ctx;

        if (!noClear) {
          self.clearCanvas(canvas);
        }
¶ ctx.restore(); |
        if (color) {
          ctx.fillStyle = color;
        }

        oCanvas.beginPath();

        if (isNaN(radians)) {
          radians = 0;
        }

        innerRadius = radius-width;
        doesntLikeZero = (isOpera || isSafari); // safari 4 doesn't actually seem to mind.

        if (!doesntLikeZero || (doesntLikeZero && radius > 0)) {
          oCanvas.arc(0, 0, radius, startAngle, radians, false);
          endPoint = self.getArcEndpointCoords(innerRadius, radians);
          oCanvas.lineTo(endPoint.x, endPoint.y);
          oCanvas.arc(0, 0, innerRadius, radians, startAngle, true);
          oCanvas.closePath();
          oCanvas.fill();
        }

      };

      this.getArcEndpointCoords = function(radius, radians) {

        return {
          x: radius * Math.cos(radians),
          y: radius * Math.sin(radians)
        };

      };

      this.deg2rad = function(nDeg) {
        return (nDeg * Math.PI/180);
      };

      this.rad2deg = function(nRad) {
        return (nRad * 180/Math.PI);
      };

      this.getTime = function(nMSec,bAsString) {
¶ convert milliseconds to mm:ss, return as object literal or string |
        var nSec = Math.floor(nMSec/1000),
            min = Math.floor(nSec/60),
            sec = nSec-(min*60);
¶ if (min === 0 && sec === 0) return null; // return 0:00 as null |
        return (bAsString?(min+':'+(sec<10?'0'+sec:sec)):{'min':min,'sec':sec});

      };

      this.clearCanvas = function(oCanvas) {

        var canvas = oCanvas,
            ctx = null,
            width, height;
        if (canvas.getContext){
¶ use getContext to use the canvas for drawing |
          ctx = canvas.getContext('2d');
        }
        width = canvas.offsetWidth;
        height = canvas.offsetHeight;
        ctx.clearRect(-(width/2), -(height/2), width, height);

      };

      this.updatePlaying = function() {

        var timeNow = (this._360data.showHMSTime?self.getTime(this.position,true):parseInt(this.position/1000, 10));
        var ringScaleFactor = self.config.scaleArcWidth;

        if (this.bytesLoaded) {
          this._360data.lastValues.bytesLoaded = this.bytesLoaded;
          this._360data.lastValues.bytesTotal = this.bytesTotal;
        }

        if (this.position) {
          this._360data.lastValues.position = this.position;
        }

        if (this.durationEstimate) {
          this._360data.lastValues.durationEstimate = this.durationEstimate;
        }
¶ background ring |
        self.drawSolidArc(this._360data.oCanvas,self.config.backgroundRingColor,this._360data.width,this._360data.radius * ringScaleFactor,self.deg2rad(fullCircle),false);
¶ loaded ring |
        self.drawSolidArc(this._360data.oCanvas,(this._360data.metadata?self.config.loadRingColorMetadata:self.config.loadRingColor),this._360data.width,this._360data.radius * ringScaleFactor,self.deg2rad(fullCircle*(this._360data.lastValues.bytesLoaded/this._360data.lastValues.bytesTotal)),0,true);
¶ don’t draw if 0 (full black circle in Opera) |
        if (this._360data.lastValues.position !== 0) {
          self.drawSolidArc(this._360data.oCanvas,(this._360data.metadata?self.config.playRingColorMetadata:self.config.playRingColor),this._360data.width,this._360data.radius * ringScaleFactor,self.deg2rad((this._360data.didFinish===1?fullCircle:fullCircle*(this._360data.lastValues.position/this._360data.lastValues.durationEstimate))),0,true);
        }
¶ metadata goes here |
        if (this._360data.metadata) {
          this._360data.metadata.events.whileplaying();
        }

        if (timeNow !== this._360data.lastTime) {
          this._360data.lastTime = timeNow;
          this._360data.oTiming.innerHTML = timeNow;
        }
¶ draw spectrum, if applicable |
        if ((this.instanceOptions.useWaveformData || this.instanceOptions.useEQData) && hasRealCanvas) { // IE <9 can render maybe 3 or 4 FPS when including the wave/EQ, so don't bother.
          self.updateWaveform(this);
        }

        if (self.config.useFavIcon && self.vuMeter) {
          self.vuMeter.updateVU(this);
        }

      };

      this.updateWaveform = function(oSound) {

        if ((!self.config.useWaveformData && !self.config.useEQData) || (!sm.features.waveformData && !sm.features.eqData)) {
¶ feature not enabled.. |
          return false;
        }

        if (!oSound.waveformData.left.length && !oSound.eqData.length && !oSound.peakData.left) {
¶ no data (or errored out/paused/unavailable?) |
          return false;
        }

        /* use for testing the data */
        /*
         for (i=0; i<256; i++) {
           oSound.eqData[i] = 1-(i/256);
         }
        */

        var oCanvas = oSound._360data.oCanvas.getContext('2d'),
            offX = 0,
            offY = parseInt(oSound._360data.circleDiameter/2, 10),
            scale = offY/2, // Y axis (+/- this distance from 0)
¶ lineWidth = Math.floor(oSound.360data.circleDiameter-(oSound.360data.circleDiameter*0.175)/(oSound._360data.circleDiameter/255)); // width for each line |
            lineWidth = 1,
            lineHeight = 1,
            thisY = 0,
            offset = offY,
            i, j, direction, downSample, dataLength, sampleCount, startAngle, endAngle, waveData, innerRadius, perItemAngle, yDiff, eqSamples, playedAngle, iAvg, nPeak;

        if (self.config.useWaveformData) {
¶ raw waveform |
          downSample = self.config.waveformDataDownsample; // only sample X in 256 (greater number = less sample points)
          downSample = Math.max(1,downSample); // make sure it's at least 1
          dataLength = 256;
          sampleCount = (dataLength/downSample);
          startAngle = 0;
          endAngle = 0;
          waveData = null;
          innerRadius = (self.config.waveformDataOutside?1:(self.config.waveformDataConstrain?0.5:0.565));
          scale = (self.config.waveformDataOutside?0.7:0.75);
          perItemAngle = self.deg2rad((360/sampleCount)*self.config.waveformDataLineRatio); // 0.85 = clean pixel lines at 150? // self.deg2rad(360*(Math.max(1,downSample-1))/sampleCount);
          for (i=0; i<dataLength; i+=downSample) {
            startAngle = self.deg2rad(360*(i/(sampleCount)*1/downSample)); // +0.67 - counter for spacing
            endAngle = startAngle+perItemAngle;
            waveData = oSound.waveformData.left[i];
            if (waveData<0 && self.config.waveformDataConstrain) {
              waveData = Math.abs(waveData);
            }
            self.drawSolidArc(oSound._360data.oCanvas,self.config.waveformDataColor,oSound._360data.width*innerRadius*(2-self.config.scaleArcWidth),oSound._360data.radius*scale*1.25*waveData,endAngle,startAngle,true);
          }
        }

        if (self.config.useEQData) {
¶ EQ spectrum |
          downSample = self.config.eqDataDownsample; // only sample N in 256
          yDiff = 0;
          downSample = Math.max(1,downSample); // make sure it's at least 1
          eqSamples = 192; // drop the last 25% of the spectrum (>16500 Hz), most stuff won't actually use it.
          sampleCount = (eqSamples/downSample);
          innerRadius = (self.config.eqDataOutside?1:0.565);
          direction = (self.config.eqDataOutside?-1:1);
          scale = (self.config.eqDataOutside?0.5:0.75);
          startAngle = 0;
          endAngle = 0;
          perItemAngle = self.deg2rad((360/sampleCount)*self.config.eqDataLineRatio); // self.deg2rad(360/(sampleCount+1));
          playedAngle = self.deg2rad((oSound._360data.didFinish===1?360:360*(oSound._360data.lastValues.position/oSound._360data.lastValues.durationEstimate)));
          j=0;
          iAvg = 0;
          for (i=0; i<eqSamples; i+=downSample) {
            startAngle = self.deg2rad(360*(i/eqSamples));
            endAngle = startAngle+perItemAngle;
            self.drawSolidArc(oSound._360data.oCanvas,(endAngle>playedAngle?self.config.eqDataColor:self.config.playRingColor),oSound._360data.width*innerRadius,oSound._360data.radius*scale*(oSound.eqData.left[i]*direction),endAngle,startAngle,true);
          }
        }

        if (self.config.usePeakData) {
          if (!oSound._360data.animating) {
            nPeak = (oSound.peakData.left||oSound.peakData.right);
¶ GIANT HACK: use EQ spectrum data for bass frequencies |
            eqSamples = 3;
            for (i=0; i<eqSamples; i++) {
              nPeak = (nPeak||oSound.eqData[i]);
            }
            oSound._360data.amplifier = (self.config.useAmplifier?(0.9+(nPeak*0.1)):1);
            oSound._360data.radiusMax = oSound._360data.circleDiameter*0.175*oSound._360data.amplifier;
            oSound._360data.widthMax = oSound._360data.circleDiameter*0.4*oSound._360data.amplifier;
            oSound._360data.radius = parseInt(oSound._360data.radiusMax*oSound._360data.amplifier, 10);
            oSound._360data.width = parseInt(oSound._360data.widthMax*oSound._360data.amplifier, 10);
          }
        }

      };

      this.getUIHTML = function(diameter) {

        return [
         '<canvas class="sm2-canvas" width="'+diameter+'" height="'+diameter+'"></canvas>',
         ' <span class="sm2-360btn sm2-360btn-default"></span>', // note use of imageMap, edit or remove if you use a different-size image.
         ' <div class="sm2-timing'+(navigator.userAgent.match(/safari/i)?' alignTweak':'')+'"></div>', // + Ever-so-slight Safari horizontal alignment tweak
         ' <div class="sm2-cover"></div>'
        ];

      };

      this.uiTest = function(sClass) {
¶ fake a 360 UI so we can get some numbers from CSS, etc. |
        var oTemplate = document.createElement('div'),
            oFakeUI, oFakeUIBox, oTemp, fakeDiameter, uiHTML, circleDiameter, circleRadius, fontSizeMax, oTiming;

        oTemplate.className = 'sm2-360ui';

        oFakeUI = document.createElement('div');
        oFakeUI.className = 'ui360'+(sClass?' '+sClass:''); // ui360 ui360-vis

        oFakeUIBox = oFakeUI.appendChild(oTemplate.cloneNode(true));

        oFakeUI.style.position = 'absolute';
        oFakeUI.style.left = '-9999px';

        oTemp = document.body.appendChild(oFakeUI);

        fakeDiameter = oFakeUIBox.offsetWidth;

        uiHTML = self.getUIHTML(fakeDiameter);

        oFakeUIBox.innerHTML = uiHTML[1]+uiHTML[2]+uiHTML[3];

        circleDiameter = parseInt(oFakeUIBox.offsetWidth, 10);
        circleRadius = parseInt(circleDiameter/2, 10);

        oTiming = self.getElementsByClassName('sm2-timing','div',oTemp)[0];
        fontSizeMax = parseInt(self.getStyle(oTiming,'font-size'), 10);
        if (isNaN(fontSizeMax)) {
¶ getStyle() etc. didn’t work. |
          fontSizeMax = null;
        }
¶ soundManager._writeDebug(‘diameter, font size: ’+circleDiameter+‘,’+fontSizeMax); |
        oFakeUI.parentNode.removeChild(oFakeUI);

        uiHTML = oFakeUI = oFakeUIBox = oTemp = null;

        return {
          circleDiameter: circleDiameter,
          circleRadius: circleRadius,
          fontSizeMax: fontSizeMax
        };

      };

      this.init = function() {

        sm._writeDebug('threeSixtyPlayer.init()');

        var oItems = self.getElementsByClassName('ui360','div'),
            i, j, oLinks = [], is_vis = false, foundItems = 0, oCanvas, oCanvasCTX, oCover, diameter, radius, uiData, uiDataVis, oUI, oBtn, o, o2, oID;

        for (i=0,j=oItems.length; i<j; i++) {
          oLinks.push(oItems[i].getElementsByTagName('a')[0]);
¶ remove “fake” play button (unsupported case) |
          oItems[i].style.backgroundImage = 'none';
        }
¶ grab all links, look for .mp3 |
        self.oUITemplate = document.createElement('div');
        self.oUITemplate.className = 'sm2-360ui';

        self.oUITemplateVis = document.createElement('div');
        self.oUITemplateVis.className = 'sm2-360ui';

        uiData = self.uiTest();

        self.config.circleDiameter = uiData.circleDiameter;
        self.config.circleRadius = uiData.circleRadius;
¶ self.config.fontSizeMax = uiData.fontSizeMax; |
        uiDataVis = self.uiTest('ui360-vis');

        self.config.fontSizeMax = uiDataVis.fontSizeMax;
¶ canvas needs inline width and height, doesn’t quite work otherwise |
        self.oUITemplate.innerHTML = self.getUIHTML(self.config.circleDiameter).join('');

        self.oUITemplateVis.innerHTML = self.getUIHTML(uiDataVis.circleDiameter).join('');

        for (i=0,j=oLinks.length; i<j; i++) {
          if (sm.canPlayLink(oLinks[i]) && !self.hasClass(oLinks[i],self.excludeClass) && !self.hasClass(oLinks[i],self.css.sDefault)) {
            self.addClass(oLinks[i],self.css.sDefault); // add default CSS decoration
            self.links[foundItems] = (oLinks[i]);
            self.indexByURL[oLinks[i].href] = foundItems; // hack for indexing
            foundItems++;

            is_vis = self.hasClass(oLinks[i].parentNode, 'ui360-vis');

            diameter = (is_vis ? uiDataVis : uiData).circleDiameter;
            radius = (is_vis ? uiDataVis : uiData).circleRadius;
¶ add canvas shiz |
            oUI = oLinks[i].parentNode.insertBefore((is_vis?self.oUITemplateVis:self.oUITemplate).cloneNode(true),oLinks[i]);

            if (isIE && typeof window.G_vmlCanvasManager !== 'undefined') { // IE only
              o = oLinks[i].parentNode;
              o2 = document.createElement('canvas');
              o2.className = 'sm2-canvas';
              oID = 'sm2_canvas_'+parseInt(Math.random()*1048576, 10);
              o2.id = oID;
              o2.width = diameter;
              o2.height = diameter;
              oUI.appendChild(o2);
              window.G_vmlCanvasManager.initElement(o2); // Apply ExCanvas compatibility magic
              oCanvas = document.getElementById(oID);
            } else {
¶ add a handler for the button |
              oCanvas = oLinks[i].parentNode.getElementsByTagName('canvas')[0];
            }
            oCover = self.getElementsByClassName('sm2-cover','div',oLinks[i].parentNode)[0];
            oBtn = oLinks[i].parentNode.getElementsByTagName('span')[0];
            self.addEventHandler(oBtn,'click',self.buttonClick);
            if (!isTouchDevice) {
              self.addEventHandler(oCover,'mousedown',self.mouseDown);
            } else {
              self.addEventHandler(oCover,'touchstart',self.mouseDown);
            }
            oCanvasCTX = oCanvas.getContext('2d');
            oCanvasCTX.translate(radius, radius);
            oCanvasCTX.rotate(self.deg2rad(-90)); // compensate for arc starting at EAST // http://stackoverflow.com/questions/319267/tutorial-for-html-canvass-arc-function
          }
        }
        if (foundItems>0) {
          self.addEventHandler(document,'click',self.handleClick);
          if (self.config.autoPlay) {
            self.handleClick({target:self.links[0],preventDefault:function(){}});
          }
        }
        sm._writeDebug('threeSixtyPlayer.init(): Found '+foundItems+' relevant items.');

        if (self.config.useFavIcon && typeof this.VUMeter !== 'undefined') {
          this.vuMeter = new this.VUMeter(this);
        }

      };

    }
¶ Optional: VU Meter component |
    ThreeSixtyPlayer.prototype.VUMeter = function(oParent) {

      var self = oParent,
          me = this,
          _head = document.getElementsByTagName('head')[0],
          isOpera = (navigator.userAgent.match(/opera/i)),
          isFirefox = (navigator.userAgent.match(/firefox/i));

      this.vuMeterData = [];
      this.vuDataCanvas = null;

      this.setPageIcon = function(sDataURL) {

        if (!self.config.useFavIcon || !self.config.usePeakData || !sDataURL) {
          return false;
        }

        var link = document.getElementById('sm2-favicon');
        if (link) {
          _head.removeChild(link);
          link = null;
        }
        if (!link) {
          link = document.createElement('link');
          link.id = 'sm2-favicon';
          link.rel = 'shortcut icon';
          link.type = 'image/png';
          link.href = sDataURL;
          document.getElementsByTagName('head')[0].appendChild(link);
        }

      };

      this.resetPageIcon = function() {

        if (!self.config.useFavIcon) {
          return false;
        }
        var link = document.getElementById('favicon');
        if (link) {
          link.href = '/favicon.ico';
        }

      };

      this.updateVU = function(oSound) {

        if (soundManager.flashVersion >= 9 && self.config.useFavIcon && self.config.usePeakData) {
          me.setPageIcon(me.vuMeterData[parseInt(16*oSound.peakData.left, 10)][parseInt(16*oSound.peakData.right, 10)]);
        }

      };

      this.createVUData = function() {

        var i=0, j=0,
            canvas = me.vuDataCanvas.getContext('2d'),
            vuGrad = canvas.createLinearGradient(0, 16, 0, 0),
            bgGrad = canvas.createLinearGradient(0, 16, 0, 0),
            outline = 'rgba(0,0,0,0.2)';

        vuGrad.addColorStop(0,'rgb(0,192,0)');
        vuGrad.addColorStop(0.30,'rgb(0,255,0)');
        vuGrad.addColorStop(0.625,'rgb(255,255,0)');
        vuGrad.addColorStop(0.85,'rgb(255,0,0)');
        bgGrad.addColorStop(0,outline);
        bgGrad.addColorStop(1,'rgba(0,0,0,0.5)');
        for (i=0; i<16; i++) {
          me.vuMeterData[i] = [];
        }
        for (i=0; i<16; i++) {
          for (j=0; j<16; j++) {
¶ reset/erase canvas |
            me.vuDataCanvas.setAttribute('width',16);
            me.vuDataCanvas.setAttribute('height',16);
¶ draw new stuffs |
            canvas.fillStyle = bgGrad;
            canvas.fillRect(0,0,7,15);
            canvas.fillRect(8,0,7,15);
            /*
¶ shadow |
            canvas.fillStyle = 'rgba(0,0,0,0.1)';
            canvas.fillRect(1,15-i,7,17-(17-i));
            canvas.fillRect(9,15-j,7,17-(17-j));
            */
            canvas.fillStyle = vuGrad;
            canvas.fillRect(0,15-i,7,16-(16-i));
            canvas.fillRect(8,15-j,7,16-(16-j));
¶ and now, clear out some bits. |
            canvas.clearRect(0,3,16,1);
            canvas.clearRect(0,7,16,1);
            canvas.clearRect(0,11,16,1);
            me.vuMeterData[i][j] = me.vuDataCanvas.toDataURL('image/png');
¶ for debugging VU images |
            /*
            var o = document.createElement('img');
            o.style.marginRight = '5px';
            o.src = vuMeterData[i][j];
            document.documentElement.appendChild(o);
            */
          }
        }

      };

      this.testCanvas = function() {
¶ canvas + toDataURL(); |
        var c = document.createElement('canvas'),
            ctx = null, ok;
        if (!c || typeof c.getContext === 'undefined') {
          return null;
        }
        ctx = c.getContext('2d');
        if (!ctx || typeof c.toDataURL !== 'function') {
          return null;
        }
¶ just in case.. |
        try {
          ok = c.toDataURL('image/png');
        } catch(e) {
¶ no canvas or no toDataURL() |
          return null;
        }
¶ assume we’re all good. |
        return c;

      };

      this.init = function() {

        if (self.config.useFavIcon) {
          me.vuDataCanvas = me.testCanvas();
          if (me.vuDataCanvas && (isFirefox || isOpera)) {
¶ these browsers support dynamically-updating the favicon |
            me.createVUData();
          } else {
¶ browser doesn’t support doing this |
            self.config.useFavIcon = false;
          }
        }

      };

      this.init();

    };
¶ completely optional: Metadata/annotations/segments code |
    ThreeSixtyPlayer.prototype.Metadata = function(oSound, oParent) {

      soundManager._wD('Metadata()');

      var me = this,
          oBox = oSound._360data.oUI360,
          o = oBox.getElementsByTagName('ul')[0],
          oItems = o.getElementsByTagName('li'),
          isFirefox = (navigator.userAgent.match(/firefox/i)),
          isAlt = false, i, oDuration;

      this.lastWPExec = 0;
      this.refreshInterval = 250;
      this.totalTime = 0;

      this.events = {

        whileplaying: function() {

          var width = oSound._360data.width,
              radius = oSound._360data.radius,
              fullDuration = (oSound.durationEstimate||(me.totalTime*1000)),
              isAlt = null, i, j, d;

          for (i=0,j=me.data.length; i<j; i++) {
            isAlt = (i%2===0);
            oParent.drawSolidArc(oSound._360data.oCanvas,(isAlt?oParent.config.segmentRingColorAlt:oParent.config.segmentRingColor),isAlt?width:width, isAlt?radius/2:radius/2, oParent.deg2rad(360*(me.data[i].endTimeMS/fullDuration)), oParent.deg2rad(360*((me.data[i].startTimeMS||1)/fullDuration)), true);
          }
          d = new Date();
          if (d-me.lastWPExec>me.refreshInterval) {
            me.refresh();
            me.lastWPExec = d;
          }

        }

      };

      this.refresh = function() {
¶ Display info as appropriate |
        var i, j, index = null,
            now = oSound.position,
            metadata = oSound._360data.metadata.data;

        for (i=0, j=metadata.length; i<j; i++) {
          if (now >= metadata[i].startTimeMS && now <= metadata[i].endTimeMS) {
            index = i;
            break;
          }
        }
        if (index !== metadata.currentItem && index < metadata.length) {
¶ update |
          oSound._360data.oLink.innerHTML = metadata.mainTitle+' <span class="metadata"><span class="sm2_divider"> | </span><span class="sm2_metadata">'+metadata[index].title+'</span></span>';
¶ self.setPageTitle(metadata[index].title+‘ | ’+metadata.mainTitle); |
          metadata.currentItem = index;
        }

      };

      this.strToTime = function(sTime) {
        var segments = sTime.split(':'),
            seconds = 0, i;
        for (i=segments.length; i--;) {
          seconds += parseInt(segments[i], 10)*Math.pow(60,segments.length-1-i); // hours, minutes
        }
        return seconds;
      };

      this.data = [];
      this.data.givenDuration = null;
      this.data.currentItem = null;
      this.data.mainTitle = oSound._360data.oLink.innerHTML;

      for (i=0; i<oItems.length; i++) {
        this.data[i] = {
          o: null,
          title: oItems[i].getElementsByTagName('p')[0].innerHTML,
          startTime: oItems[i].getElementsByTagName('span')[0].innerHTML,
          startSeconds: me.strToTime(oItems[i].getElementsByTagName('span')[0].innerHTML.replace(/[()]/g,'')),
          duration: 0,
          durationMS: null,
          startTimeMS: null,
          endTimeMS: null,
          oNote: null
        };
      }
      oDuration = oParent.getElementsByClassName('duration','div',oBox);
      this.data.givenDuration = (oDuration.length?me.strToTime(oDuration[0].innerHTML)*1000:0);
      for (i=0; i<this.data.length; i++) {
        this.data[i].duration = parseInt(this.data[i+1]?this.data[i+1].startSeconds:(me.data.givenDuration?me.data.givenDuration:oSound.durationEstimate)/1000, 10)-this.data[i].startSeconds;
        this.data[i].startTimeMS = this.data[i].startSeconds*1000;
        this.data[i].durationMS = this.data[i].duration*1000;
        this.data[i].endTimeMS = this.data[i].startTimeMS+this.data[i].durationMS;
        this.totalTime += this.data[i].duration;
      }

    };

    if (navigator.userAgent.match(/webkit/i) && navigator.userAgent.match(/mobile/i)) {
¶ iPad, iPhone etc. |
      soundManager.useHTML5Audio = true;
    }

    soundManager.html5PollingInterval = 50; // increased framerate for whileplaying() etc.
    soundManager.debugMode = (window.location.href.match(/debug=1/i)); // disable or enable debug output
    soundManager.consoleOnly = true;
    soundManager.flashVersion = 9;
    soundManager.useHighPerformance = true;
    soundManager.useFlashBlock = true;
¶ soundManager.useFastPolling = true; // for more aggressive, faster UI updates (higher CPU use) |
¶ FPS data, testing/debug only |
    if (soundManager.debugMode) {
      window.setInterval(function() {
        var p = window.threeSixtyPlayer;
        if (p && p.lastSound && p.lastSound._360data.fps && typeof window.isHome === 'undefined') {
          soundManager._writeDebug('fps: ~'+p.lastSound._360data.fps);
          p.lastSound._360data.fps = 0;
        }
      },1000);
    }

    window.ThreeSixtyPlayer = ThreeSixtyPlayer; // constructor

    }(window));

    threeSixtyPlayer = new ThreeSixtyPlayer();
¶ hook into SM2 init |
    soundManager.onready(threeSixtyPlayer.init);