sequencer.hh

// 
// YASE Sequencer Module Header
// 
// Copyright (C) 2022 Eric Klavins
// This file is part of YASE
// 
// YASE is free software: you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
//
// YASE is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
// details.
// 
// You should have received a copy of the GNU General Public License along
// with YASE. If not, see <https://www.gnu.org/licenses/>.
// 
 
#ifndef YASE_SEQUENCER_H
#define YASE_SEQUENCER_H
 
#include <vector>
#include "event.hh"
#include "yase.hh"
 
namespace yase {
 
    
    class Sequencer : public Module {
 
    typedef  void (Sequencer::*UpdateFunction)();  
    static const int DOWN = 0;
    static const int UP = 1;
 
    public:
 
      Sequencer();
      ~Sequencer();
 
      void init();
      void update();
 
      void keydown(const Event &e);
      void keyup(const Event &e);
      void insert_rest();
 
      void reset();
      void record();
      void stop();
      void play();
      void clear();
 
      void allocate(int n);
      void set(int index, int note);
      bool is_rest(int index);
      void rest(int index);
 
      void decrease_duration(double amount);
      void increase_duration(double amount);
 
      bool is_playing();
 
    private:
 
      vector<Event *> sequence;
      int step, mode;
      double t, period, prev_clock;
      int duration, clock;
      bool tick;
 
      UpdateFunction update_fcn;
 
      void recording();
      void playing();
      void idle();
 
    };
 
}
 
#endif