forward_node.hpp

#pragma once
#include <ossia/dataflow/audio_port.hpp>
#include <ossia/dataflow/graph_node.hpp>
#include <ossia/dataflow/midi_port.hpp>
#include <ossia/dataflow/port.hpp>
namespace ossia::nodes
{
class forward_node : public ossia::nonowning_graph_node
{
public:
  forward_node()
  {
    m_inlets.push_back(&audio_in);
    // m_inlets.push_back(&midi_in);
    m_outlets.push_back(&audio_out);
    // m_outlets.push_back(&midi_out);
  }
 
  void run(const token_request& t, exec_state_facade) noexcept override
  {
    // OPTIMIZEME : we copy the ins & outs of the token more
    // than necessary
    {
      ossia::audio_port& i = *audio_in;
      ossia::audio_port& o = *audio_out;
      if(!audio_out.has_gain)
      {
        o = i;
      }
      else
      {
        switch(i.channels())
        {
          case 0:
            return;
 
          case 1:
            process_audio_out_mono(i, audio_out);
            break;
 
          default:
            process_audio_out_general(i, audio_out);
            break;
        }
      }
    }
    // {
    //   auto i = midi_in.target<ossia::midi_port>();
    //   auto o = midi_out.target<ossia::midi_port>();
    //   o->messages = i->messages;
    // }
  }
 
  ossia::audio_inlet audio_in;
  // ossia::midi_inlet midi_in;
  ossia::audio_outlet audio_out;
  // ossia::midi_outlet midi_out;
};
 
class interval final : public forward_node
{
public:
  using forward_node::forward_node;
 
  ~interval()
  {
    if(m_inlets.size() == 4)
    {
      delete m_inlets[1];
      delete m_inlets[2];
      delete m_inlets[3];
      m_inlets.resize(1);
    }
  }
  [[nodiscard]] std::string label() const noexcept override { return "Interval"; }
 
  void run(const token_request& t, exec_state_facade f) noexcept override
  {
    forward_node::run(t, f);
    if(m_inlets.size() >= 4)
    {
      {
        ossia::value_port& vp = *m_inlets[1]->target<ossia::value_port>();
        if(auto& data = vp.get_data(); !data.empty())
        {
          tempo = ossia::convert<float>(data.back().value);
        }
      }
      {
        ossia::value_port& vp = *m_inlets[3]->target<ossia::value_port>();
        if(auto& data = vp.get_data(); !data.empty())
        {
          float seek_ms = ossia::convert<float>(data.back().value);
          seek = ossia::flicks_per_millisecond<double> * seek_ms;
        }
      }
    }
  }
 
  static const constexpr float no_tempo = -1000.f;
  float tempo{no_tempo};
  int64_t seek{std::numeric_limits<int64_t>::min()};
};
class loop final : public forward_node
{
public:
  using forward_node::forward_node;
  [[nodiscard]] std::string label() const noexcept override { return "Loop"; }
};
class scenario final : public forward_node
{
public:
  using forward_node::forward_node;
  [[nodiscard]] std::string label() const noexcept override { return "Scenario"; }
};
}