// wav_to_dat.c  read a .wav  write a .dat  just the amplitude
//               wav_to_dat  file.wav  file.dat
//               compile with  rw_wav.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "rw_wav.h"

int main(int argc, char * argv[])
{
  int i;
  char input_name[60] = "cat.wav";
  char output_name[60] = "cat.dat";
  header w;
  char sound[1000000];
  FILE * outp;
  int count;
 
  printf("wav_to_dat.c running \n");
  if(argc<2)
  {
    printf("no input file given, using %s \n", input_name);
  }
  else
  {
    strcpy(input_name, argv[1]);
    printf("try to open %s for reading. \n", input_name);
  }

  if(argc<3)
  {
    printf("no output file given, using %s \n", output_name);
  }
  else
  {
    strcpy(output_name, argv[2]);
    printf("try to open %s for writing. \n", output_name);
  }

  printf("calling read_wave from %s \n", input_name);

  read_wave(input_name, & w, sound);

  printf("writing float data to %s \n", output_name);

  outp = fopen(output_name, "w");
  if(outp==0) { printf("can not open %s \n", output_name); exit(-1); }
  printf("header.csize=%d \n", w.csize);
  count = w.csize-1;
  for(i=0; i<count; i++)
    fprintf(outp, "%f\n", (double)sound[i]/128.0);

  fclose(outp);

  printf("wav_to_dat.c  done. new %s file written \n", output_name);
  return 0;
} // end wav_to_dat.c