/*
  ==============================================================================

    port.cpp
    Created: 25 Oct 2025 2:09:16pm
    Author:  mickl

  ==============================================================================
*/

#include "port.h"
#include "math.h"

void Port::Init(float sample_rate, float htime)
{
    yt1_ = 0;
    prvhtim_ = -100.0;
    htime_ = htime;

    sample_rate_ = sample_rate;
    onedsr_ = 1.0 / sample_rate_;
}

float Port::Process(float in)
{
    if (prvhtim_ != htime_)
    {
        c2_ = powf(0.5, onedsr_ / htime_);
        c1_ = 1.0 - c2_;
        prvhtim_ = htime_;
    }

    return yt1_ = c1_ * in + c2_ * yt1_;
}