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MulAdd.js
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MulAdd.js
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/*!
* @depends ../core/AudioletNode.js
*/
/*
* Multiply and add values
*
* **Inputs**
*
* - Audio
* - Multiply audio
* - Add audio
*
* **Outputs**
*
* - MulAdded audio
*
* **Parameters**
*
* - mul The value to multiply by. Linked to input 1.
* - add The value to add. Linked to input 2.
*
* @constructor
* @extends AudioletNode
* @param {Audiolet} audiolet The audiolet object.
* @param {Number} [mul=1] The initial value to multiply by.
* @param {Number} [add=0] The initial value to add.
*/
var MulAdd = function(audiolet, mul, add) {
AudioletNode.call(this, audiolet, 3, 1);
this.linkNumberOfOutputChannels(0, 0);
this.mul = new AudioletParameter(this, 1, mul || 1);
this.add = new AudioletParameter(this, 2, add || 0);
};
extend(MulAdd, AudioletNode);
/**
* Process samples
*/
MulAdd.prototype.generate = function() {
var input = this.inputs[0];
var output = this.outputs[0];
var mul = this.mul.getValue();
var add = this.add.getValue();
var numberOfChannels = input.samples.length;
for (var i = 0; i < numberOfChannels; i++) {
output.samples[i] = input.samples[i] * mul + add;
}
};
/**
* toString
*
* @return {String} String representation.
*/
MulAdd.prototype.toString = function() {
return 'Multiplier/Adder';
};