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

#include "type-def.h"
#include "util.h"
#include "imageio.h"

int main(int argc, char **argv)
{
  char fName[256];
  int i, k;
  IMAGEINT_MBAND obsImg;
  int k1, k2;
  obsImg.nband = 0;
  for (i=1; i < (argc-1); i+=2) {
    printf("Reading %s and writing to %s... ", argv[i], argv[i+1]);
    fflush(stdout);
    ReadP6(argv[i], &obsImg);
    WriteP6Char(argv[i+1], &obsImg, 1);
    do {
      printf("Input pixel position: ");
      scanf("%d%d", &k1, &k2);
      if (k1 < 0 || k1 >= obsImg.nrow) break;
      if (k2 < 0 || k2 >= obsImg.ncol) break;
      printf("The value of pixel (%d,%d) is : ", k1, k2);
      for (k=0; k < obsImg.nband; k++) {
	printf("%d(%d) ", obsImg.bands[k].data[k1][k2],k);
      }
      printf("\n");
    } while(1);
    if (obsImg.nband == 3) {
      for (k=0; k < obsImg.nband; k++) {
	strcpy(fName, argv[i+1]);
	switch(k) {
	case 0:
	  strcat(fName,"_red");
	  break;
	case 1:
	  strcat(fName,"_green");
	  break;
	case 2:
	  strcat(fName,"_blue");
	  break;
	}
	Write_An_Image_Int(&(obsImg.bands[k]), (int)1, fName);
      }
    }
  }
  Free_Image_MBAND(&obsImg);
  
  return 0;
}