web-audio-api/build/DspObject.js

Node.js implementation of Web audio API

var PRS$0 = (function(o,t){o["__proto__"]={"a":t};return o["a"]===t})({},{});var DP$0 = Object.defineProperty;var GOPD$0 = Object.getOwnPropertyDescriptor;var MIXIN$0 = function(t,s){for(var p in s){if(s.hasOwnProperty(p)){DP$0(t,p,GOPD$0(s,p));}}return t};var SP$0 = Object.setPrototypeOf||function(o,p){if(PRS$0){o["__proto__"]=p;}else {DP$0(o,"__proto__",{"value":p,"configurable":true,"enumerable":false,"writable":true});}return o};var OC$0 = Object.create;var _ = require('underscore')
  , events = require('events')

var DspObject = (function(super$0){"use strict";super$0=events.EventEmitter;if(!PRS$0)MIXIN$0(DspObject, super$0);var proto$0={};

  function DspObject(context) {
    super$0.call(this)
    this.context = context
    this._scheduled = []
  }if(super$0!==null)SP$0(DspObject,super$0);DspObject.prototype = OC$0(super$0!==null?super$0.prototype:null,{"constructor":{"value":DspObject,"configurable":true,"writable":true}});DP$0(DspObject,"prototype",{"configurable":false,"enumerable":false,"writable":false});

  proto$0._tick = function() {
    this._frame++
    var event = this._scheduled.shift()
      , eventsSameTime, eventsToExecute = []
      , previousTime
    
    // Gather all events that need to be executed at this tick
    while (event && event.time <= this.context.currentTime) {
      previousTime = event.time
      eventsSameTime = []
      // Gather all the events with same time
      while (event && event.time === previousTime) {
        // Add the event only if there isn't already events with same type
        if (eventsSameTime.every(function(other) {
          return event.type !== other.type
        })) eventsSameTime.push(event)
        event = this._scheduled.shift()
      }
      eventsSameTime.forEach(function(event) {
        eventsToExecute.push(event)
      })
    }
    if (event) this._scheduled.unshift(event)
    
    // And execute
    eventsToExecute.reverse().forEach(function(event) {
      event.func && event.func()
    })
  };

  proto$0._schedule = function(type, time, func, args) {
    var event = {
        time: time,
        func: func,
        type: type
      },
      ind = _.sortedIndex(this._scheduled, event, function(e) {
        return e.time
      })
    if (args) event.args = args
    this._scheduled.splice(ind, 0, event)
  };

  proto$0._unscheduleTypes = function(types) {
    this._scheduled = _.reject(this._scheduled, function(event) {
      return _.contains(types, event.type)
    })
  };

MIXIN$0(DspObject.prototype,proto$0);proto$0=void 0;return DspObject;})();

module.exports = DspObject