web-audio-api/build/GainNode.js

Node.js implementation of Web audio API

var AudioNode = require('./AudioNode')
  , AudioParam = require('./AudioParam')
  , AudioBuffer = require('./AudioBuffer')
  , BLOCK_SIZE = require('./constants').BLOCK_SIZE
  , readOnlyAttr = require('./utils').readOnlyAttr

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

  function GainNode(context) {
    super$0.call(this, context, 1, 1, undefined, 'max', 'speakers')
    readOnlyAttr(this, 'gain', new AudioParam(this.context, 1, 'a'))
  }if(super$0!==null)SP$0(GainNode,super$0);GainNode.prototype = OC$0(super$0!==null?super$0.prototype:null,{"constructor":{"value":GainNode,"configurable":true,"writable":true}});DP$0(GainNode,"prototype",{"configurable":false,"enumerable":false,"writable":false});

  proto$0._tick = function() {
    var outBuff, inBuff, gainArray, i, ch, inChArray, outChArray
    super$0.prototype._tick.call(this, arguments)
    inBuff = this._inputs[0]._tick()
    gainArray = this.gain._tick().getChannelData(0)
    outBuff = new AudioBuffer(inBuff.numberOfChannels, BLOCK_SIZE, this.context.sampleRate)
    for (ch = 0; ch < inBuff.numberOfChannels; ch++) {
      inChArray = inBuff.getChannelData(ch)
      outChArray = outBuff.getChannelData(ch)
      for (i = 0; i < BLOCK_SIZE; i++) {
        outChArray[i] = inChArray[i] * gainArray[i]
      }
    }
    return outBuff
  };

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

module.exports = GainNode