#include <iostream>
  #include "wavdata.h"
  #include "fft.h"
  #include <math.h>

  #include <stdio.h>
  #include <stdlib.h>
  

  
  #define DELAY 5000

  #define TOUCH 30000

  #define AMPLITUDE 0.5
  

  #define DO_FREQ 16744
  #define RE_FREQ 18794
  #define MI_FREQ 21096
  #define FA_FREQ 22350
  #define SOL_FREQ 25087
  #define LA_FREQ 28160
  #define SI_FREQ 31608

  #define MAX_NOTES 7

  char * sounds[MAX_NOTES];
  char buttons[MAX_NOTES];
  int freqs[MAX_NOTES];

  void save(int freq, char * filename) {
      WavData data;
      data.load("COW.WAV");

      data.setFrequency(freq);

      char * data_do = data.data();
      char *data2 = new char[data.datasize()/2];
  

      // accelerate in 2 times

  	int i;
      int j = 0;
  	for(i=0;i<data.datasize();i+=2) {
  		data2[j]=data_do[i];
          j++;
      }

      // resize to one size (TOUCH)

      int size = data.datasize()/2;

      if (size > TOUCH) size = TOUCH;
      

      data.clearData();
  	data.setDatasize(size);
  	data.setData(data2);
  

      // save with its filename

      data.save(filename);
  }
  
  void generate_sounds() {
      for (int i = 0; i < MAX_NOTES; i++) {
          save(freqs[i], sounds[i]);
      }
  }
  
  int play_music(char* filename) {

      char command[256];
      int status;

      /* make a command*/

      sprintf( command, "aplay -c 1 -q -t wav %s", filename );
  

      /* execute command of play*/

      status = system( command );
       
      return status;
  }
  
  int run_sound(char button) {

      for(int i = 0; i < MAX_NOTES; i++ ) {
          if (buttons[i] == button) {
              return play_music(sounds[i]);
          }
      }

      return -1;
  }
  
  void load_data() {
      sounds[0] = "DO.WAV",
      sounds[1] = "RE.WAV",
      sounds[2] = "MI.WAV",
      sounds[3] = "FA.WAV",
      sounds[4] = "SOL.WAV",
      sounds[5] = "LA.WAV",
      sounds[6] = "SI.WAV";
      
      buttons[0] = 'q';
      buttons[1] = 's';
      buttons[2] = 'd';
      buttons[3] = 'f';
      buttons[4] = 'g';
      buttons[5] = 'h';
      buttons[6] = 'j';
      
      freqs[0] = DO_FREQ;
      freqs[1] = RE_FREQ;
      freqs[2] = MI_FREQ;
      freqs[3] = FA_FREQ;
      freqs[4] = SOL_FREQ;
      freqs[5] = LA_FREQ;
      freqs[6] = SI_FREQ;
  }
  
  int main(int argc, char **argv)
  {

      char button;

      /* load sounds, buttons and frequencies*/
      load_data();

      /* generate sounds from do to si (you'll find them in the same repository)*/
      generate_sounds();

      printf("You can play on the keyboards q-j which corresponds to the notes do - si\n. To exit press e.\n  Enjoy!\n");

      /* reconfigure consol to detect pressed key without enter pressing*/
      system ("/bin/stty raw");
  
      /* char can be read without enter; to stop it - . should be pressed*/    
      while((button=getchar())!= '.') {
          putchar(button);
          run_sound(button);
      }

      /* return to normal consol mode*/
      system ("/bin/stty cooked");

      return 0;

      
  }