score-avnd-senior/Ottobit/OttobitModel.hpp

#pragma once

#include <cmath>

#include <halp/audio.hpp>
#include <halp/controls.hpp>
#include <halp/mappers.hpp>
#include <halp/meta.hpp>

namespace Meris
{

class Ottobit
{
#define BITS 16
#define RATE 64

public:
  halp_meta(name, "Ottobit")
  halp_meta(category, "Audio")
  halp_meta(c_name, "ottobit")
  halp_meta(uuid, "fe8425d7-64d3-4b8b-a652-1d80026edc8b")

  // Define inputs and outputs ports.
  // See the docs at https://github.com/celtera/avendish
  struct ins
  {
    halp::dynamic_audio_bus<"Input", double> audio;
    struct : halp::knob_f32<"Bits", halp::range{.min = 3, .max = BITS, .init = BITS}>
    {
      using mapper = halp::log_mapper<std::ratio<95, 100>>;
    } bits;
    halp::knob_f32<"Rate", halp::range{.min = .1, .max = 1., .init = 1.}> rate;
  } inputs;

  struct
  {
    halp::dynamic_audio_bus<"Output", double> audio;
  } outputs;

  using setup = halp::setup;
  void prepare(setup info)
  {
    // Initialization, this method will be called with buffer size, etc.
    set_bit_factor();
    skipped_frames.resize(info.input_channels);
  }

  // Do our processing for N samples
  using tick = halp::tick;

  // Defined in the .cpp
  void operator()(tick t);

  // UI is defined in another file to keep things clear.
  struct ui;

private:
  // Local variables
  int bit_factor, step_size{0};

  std::vector<int> skipped_frames;

  double previous_bits{BITS}, previous_rate{1};

  void set_bit_factor();
  double crush_frame(const double& f);
};

}