MFCC.hpp

#pragma once
#include <Engine/Node/SimpleApi.hpp>
 
#include <Analysis/GistState.hpp>
 
#include <numeric>
namespace Analysis
{
struct Spectrum
{
  struct Metadata : Control::Meta_base
  {
    static const constexpr auto prettyName = "Spectrum";
    static const constexpr auto objectKey = "Mel";
    static const constexpr auto category = "Analysis/Spectrum";
    static const constexpr auto author = "ossia score, Gist library";
    static const constexpr auto kind = Process::ProcessCategory::Analyzer;
    static const constexpr auto description = "Get the magnitude spectrum of a signal";
    static const constexpr auto tags = std::array<const char*, 0>{};
    static const uuid_constexpr auto uuid
        = make_uuid("422a1f92-821c-4073-ae50-e7c21487e27d");
 
    static const constexpr audio_in audio_ins[]{"in"};
    static const constexpr audio_out audio_outs[]{"out"};
    static const constexpr auto controls = tuplet::make_tuple(
        Control::LogFloatSlider{"Gain", 0., 100., 1.},
        Control::FloatSlider{"Gate", 0., 1., 0.});
  };
 
  using State = GistState;
  using control_policy = ossia::safe_nodes::last_tick;
 
  static void
  run(const ossia::audio_port& in, float gain, float gate, ossia::audio_port& out,
      ossia::token_request tk, ossia::exec_state_facade e, State& st)
  {
    st.processVector<&Gist<double>::getMagnitudeSpectrum>(in, gain, gate, out, tk, e);
  }
};
 
struct MelSpectrum
{
  struct Metadata : Control::Meta_base
  {
    static const constexpr auto prettyName = "Mel spectrum";
    static const constexpr auto objectKey = "Mel";
    static const constexpr auto category = "Analysis/Spectrum";
    static const constexpr auto author = "ossia score, Gist library";
    static const constexpr auto kind = Process::ProcessCategory::Analyzer;
    static const constexpr auto description
        = "Get the Mel frequency spectrum of a signal";
    static const constexpr auto tags = std::array<const char*, 0>{};
    static const uuid_constexpr auto uuid
        = make_uuid("f2b62e47-0e67-476f-b757-ef6a48610a78");
 
    static const constexpr audio_in audio_ins[]{"in"};
    static const constexpr audio_out audio_outs[]{"out"};
    static const constexpr auto controls = tuplet::make_tuple(
        Control::LogFloatSlider{"Gain", 0., 100., 1.},
        Control::FloatSlider{"Gate", 0., 1., 0.});
  };
 
  using State = GistState;
  using control_policy = ossia::safe_nodes::last_tick;
 
  static void
  run(const ossia::audio_port& in, float gain, float gate, ossia::audio_port& out,
      ossia::token_request tk, ossia::exec_state_facade e, State& st)
  {
    st.processVector<&Gist<double>::getMelFrequencySpectrum>(in, gain, gate, out, tk, e);
  }
};
 
struct MFCC
{
  struct Metadata : Control::Meta_base
  {
    static const constexpr auto prettyName = "MFCC";
    static const constexpr auto objectKey = "MFCC";
    static const constexpr auto category = "Analysis/Spectrum";
    static const constexpr auto author = "ossia score, Gist library";
    static const constexpr auto kind = Process::ProcessCategory::Analyzer;
    static const constexpr auto description
        = "Get the mel-frequency cepstral coefficients of a signal";
    static const constexpr auto tags = std::array<const char*, 0>{};
    static const uuid_constexpr auto uuid
        = make_uuid("26684acb-36f5-4a8b-8ed3-f32f9ffb436b");
 
    static const constexpr audio_in audio_ins[]{"in"};
    static const constexpr audio_out audio_outs[]{"out"};
    static const constexpr auto controls = tuplet::make_tuple(
        Control::LogFloatSlider{"Gain", 0., 100., 1.},
        Control::FloatSlider{"Gate", 0., 1., 0.});
  };
 
  using State = GistState;
  using control_policy = ossia::safe_nodes::last_tick;
 
  static void
  run(const ossia::audio_port& in, float gain, float gate, ossia::audio_port& out,
      ossia::token_request tk, ossia::exec_state_facade e, State& st)
  {
    st.processVector<&Gist<double>::getMelFrequencyCepstralCoefficients>(
        in, gain, gate, out, tk, e);
  }
};
}