faust_node.hpp

#pragma once
#include <ossia/dataflow/graph_node.hpp>
#include <ossia/dataflow/nodes/faust/faust_utils.hpp>
 
namespace ossia::nodes
{
using faust_port_array
    = ossia::small_vector<std::pair<ossia::value_port*, FAUSTFLOAT*>, 8>;
class faust_mono_fx final : public ossia::graph_node
{
public:
  std::shared_ptr<dsp> m_dsp{};
  faust_port_array controls;
  faust_port_array displays;
 
  struct clone
  {
    explicit clone(dsp* f, const clone& orig)
        : fx{f}
    {
      controls = orig.controls;
      displays = orig.displays;
 
      fx->init(orig.fx->getSampleRate());
 
      faust_exec_ui_clone<clone> ex{*this};
      fx->buildUserInterface(&ex);
    }
 
    clone(dsp* f, const faust_port_array& controls, const faust_port_array& disps)
        : fx{f}
        , controls{controls}
        , displays{disps}
    {
    }
 
    dsp* fx{};
    faust_port_array controls;
    faust_port_array displays;
  };
 
  void set_control(int i, float v) noexcept
  {
    *controls[i].second = v;
    for(std::size_t c = 1; c < clones.size(); c++)
    {
      *clones[c].controls[i].second = v;
    }
  }
 
  std::vector<clone> clones;
  faust_mono_fx(std::shared_ptr<dsp> dsp)
      : m_dsp{std::move(dsp)}
  {
    m_inlets.push_back(new ossia::audio_inlet);
    m_outlets.push_back(new ossia::audio_outlet);
 
    // Initialize the controls
    faust_exec_ui<faust_mono_fx, false> ex{*this};
    m_dsp->buildUserInterface(&ex);
 
    // Preallocate for the most common case, two channels
    clones.emplace_back(m_dsp.get(), controls, displays);
    clones.emplace_back(m_dsp->clone(), clones[0]);
  }
 
  void run(const ossia::token_request& tk, ossia::exec_state_facade e) noexcept override
  {
    faust_node_utils{}.exec_mono_fx(*this, *m_dsp, tk, e);
  }
 
  [[nodiscard]] std::string label() const noexcept override { return "Faust"; }
 
  void all_notes_off() noexcept override { }
 
  ~faust_mono_fx()
  {
    // Clone 0 is the original instance
    for(std::size_t i = 1; i < clones.size(); i++)
      delete clones[i].fx;
  }
};
class faust_fx final : public ossia::graph_node
{
  std::shared_ptr<dsp> m_dsp{};
 
public:
  faust_port_array controls;
  faust_port_array displays;
  faust_fx(std::shared_ptr<dsp> dsp)
      : m_dsp{std::move(dsp)}
  {
    m_inlets.push_back(new ossia::audio_inlet);
    m_outlets.push_back(new ossia::audio_outlet);
    faust_exec_ui<faust_fx, false> ex{*this};
    m_dsp->buildUserInterface(&ex);
  }
 
  void set_control(int i, float v) noexcept { *controls[i].second = v; }
  void run(const ossia::token_request& tk, ossia::exec_state_facade e) noexcept override
  {
    faust_node_utils{}.exec(*this, *m_dsp, tk, e);
  }
 
  [[nodiscard]] std::string label() const noexcept override { return "Faust"; }
 
  void all_notes_off() noexcept override { }
};
 
class faust_synth final : public ossia::graph_node
{
  std::shared_ptr<ossia::nodes::custom_dsp_poly_effect> m_dsp{};
 
public:
  faust_port_array controls;
  faust_port_array displays;
 
  void set_control(int i, float v) noexcept { *controls[i].second = v; }
  std::array<int8_t, 128> in_flight{};
  faust_synth(std::shared_ptr<ossia::nodes::custom_dsp_poly_effect> dsp)
      : m_dsp{std::move(dsp)}
  {
    m_inlets.push_back(new ossia::audio_inlet);
    m_inlets.push_back(new ossia::midi_inlet);
    m_outlets.push_back(new ossia::audio_outlet);
    faust_exec_ui<faust_synth, true> ex{*this};
    m_dsp->buildUserInterface(&ex);
  }
 
  void run(const ossia::token_request& tk, ossia::exec_state_facade e) noexcept override
  {
    faust_node_utils{}.exec_synth(*this, *m_dsp, tk, e);
  }
 
  [[nodiscard]] std::string label() const noexcept override { return "Faust Synth"; }
 
  void all_notes_off() noexcept override
  {
    faust_node_utils{}.all_notes_off(*this, *m_dsp);
  }
};
 
}