Subversion Repositories DIN Is Noise

/*
* oscilloscope.h
* DIN Is Noise is copyright (c) 2006-2021 Jagannathan Sampath
* DIN Is Noise is released under GNU Public License 2.0
* For more information, please visit https://dinisnoise.org/
*/

#ifndef __oscilloscope
#define __oscilloscope

#define MAX_SAMPLES 1024

#include "box.h"
#include "ui.h"
#include "arrow_button.h"
#include "widget.h"
#include <string>
#include <vector>

struct oscilloscope_params_t {
  int left, base, height;
  int num_samples;
  int visible;
  int folded;
  oscilloscope_params_t (int l, int b, int h, int ns, int v, int f);
};

struct oscilloscope : ui, click_listener, widget {

  struct sample_t {
    static float lmin, lmax; // current min/max of left channel
    static float rmin, rmax; // current min/max of right channel
    float left, right; // stereo
    sample_t () {left = right = 0;}
  } samples [MAX_SAMPLES];

  std::vector<oscilloscope_params_t> params; // for each instrument

  int left, base, height;
  int num_samples;
  int folded;

  void set_folded (int f);

  int viewr;
  int addr;
  void add_samples (float* outl, float* outr, int n);

  std::string settingsf;

  int limit;

  oscilloscope (const std::string& _settingsf);
  ~oscilloscope ();

  int load ();
  int save ();
  void load_current_instrument ();
  void save_current_instrument ();

  // gl
  int* vertex_array;
  float* color_array;

  // ui
  //
  arrow_button fld;
  float lr, lg, lb; // left channel color
  float rr, rg, rb; // right channel color

  box<int> win, pick_win;
  int leftx, rightx, endx;

  int ndraw;
  int label_counter;

  int lly, lry, lh;
  static const int buf_size = 256;
  char lbuf1 [buf_size], rbuf1 [buf_size];

  void set_height (int h);
  void set_num_samples (int n);

  void calc_draw_params ();
  void draw ();

  int lmb_clicked;
  int px, py;
  int move, stop_move;
  int handle_input ();
  void clicked (button& b);

};
#endif