guitfx/gate.h

#pragma once

#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>

struct gate {
  float threshold;
  bool enable_calibration;

  unsigned block_size;
  unsigned cur_block_count;
  float cur_block_sum;
  float last_block_sum;

  bool is_active;
  float cur_gain;

  float attack;
  float release;
};

void gate_init();
void gate_process(
     struct gate * gate,
     size_t frame_size,
     float const * in,
     float * out
);