#include "simple_audio.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
 
sample* sa_note(sa_instrument instrument, char* note, int len) {
  return NULL;
}
 
 
sample sa_swap_bytes(sample s) {
  sample t;
  char* s_bytes;
  char* t_bytes;
  s_bytes = (char*) &s;
  t_bytes = (char*) &t;
 
  t_bytes[0] = t_bytes[1];
  t_bytes[1] = s_bytes[0];
  return t;
}
 
 
int sa_write_samples(char* filename, sample* samples, int len) {
  FILE* handle;
  if( (handle = fopen(filename, "w")) == NULL )
    {
      fprintf(stderr, "Impossibile aprire il file %s\n", filename);
      exit(EXIT_FAILURE);
    }
 
  int counter;
  sample buf;
  for(counter = 0; counter < len; counter ++) {
    buf = samples[counter];
    if(sa_is_little_endian()) { buf = sa_swap_bytes(buf); }
 
    fwrite(&buf, 1, 1, handle);
  }
  fclose (handle);
  return EXIT_SUCCESS;
}
 
int sa_is_little_endian() {
  return 0;
}
 
int sa_is_big_endian() {
  return 1;
}