/*
  * Khoros: $Id$
  */

#if !defined(__lint) && !defined(__CODECENTER__)
static char rcsid[] = "Khoros: $Id$";
#endif

/*
 * Copyright (C) 1993 - 1997, Khoral Research, Inc., ("KRI").
 * All rights reserved.  See $BOOTSTRAP/repos/license/License or run klicense.
 */

/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>> <<<<<<<<<<<<<<<<<<<<<<<<<<
   >>>> 
   >>>> 	Main program for myhistogramstretch
   >>>> 
   >>>>  Private: 
   >>>> 	main
   >>>> 
   >>>>   Static: 
   >>>>   Public: 
   >>>> 
   >>>>>>>>>>>>>>>>>>>>>>>>>>>>> <<<<<<<<<<<<<<<<<<<<<<<<<< */


#include "myhistogramstretch.h"

clui_info_struct *clui_info = NULL;

/*-----------------------------------------------------------
|
|  Routine Name: main() - My Histogram Stretch
|
|       Purpose: main program for myhistogramstretch
|
|         Input:
|		char *clui_info->i_file; {First Input data object}
|		int   clui_info->i_flag; {TRUE if -i specified}
|
|		char *clui_info->o_file; {Resulting output data object}
|		int   clui_info->o_flag; {TRUE if -o specified}
|
|        Output:
|       Returns:
|
|    Written By: 
|          Date: July 1, 1997
| Modifications:
|
------------------------------------------------------------*/

int main(
   int  argc,
   char **argv)
{

/* -main_variable_list */
   char *lib = "myhistorgramstretch_obj";
   char *rtn = "main";
   kobject in_object = NULL;
   kobject out_object = NULL;
   unsigned char *plane;
   unsigned char *res_plane;
   int w, h, d, t, e;
   int cw, ch, ct, pos;
   int histw, min, max; /* segédváltozók a hisztogram szélésségének meghatározásához */
/* -main_variable_list_end */

	khoros_init(argc, argv, "PROBA", PRODUCT_RELEASE_DATE,
	            PRODUCT_RELEASE_NAME, PRODUCT_RELEASE_VERSION,
	            PRODUCT_RELEASE_MAJOR, PRODUCT_RELEASE_MINOR,
	            "$PROBA/objects/kroutine/myhistogramstretch");
	kexit_handler(myhistogramstretch_free_args, NULL);

/* -main_get_args_call */
	kclui_init("PROBA", "myhistogramstretch", KGEN_KROUTINE,  &clui_uis_spec,
		   myhistogramstretch_usage_additions, myhistogramstretch_get_args,
 		   myhistogramstretch_free_args);
/* -main_get_args_call_end */

/* -main_before_lib_call */
   if ((in_object = kpds_open_input_object(clui_info->i_file))
          == KOBJECT_INVALID) {
     kerror(lib, rtn, "Can not open input object %s.\n", clui_info->i_file);
     kexit(KEXIT_FAILURE);
   }
   if ((out_object = kpds_open_output_object(clui_info->o_file))
        == KOBJECT_INVALID) {
     kerror(lib, rtn, "Can not open output object %s.\n", clui_info->o_file);
     kexit(KEXIT_FAILURE);
   }
   if (!kpds_copy_object(in_object, out_object)) {
     kerror(lib, rtn, "Can not copy input object to output object.\n");
     kexit(KEXIT_FAILURE);
   }
   kpds_set_attribute(in_object,  KPDS_VALUE_DATA_TYPE, KUBYTE);
   kpds_set_attribute(out_object, KPDS_VALUE_DATA_TYPE, KUBYTE);

  kpds_get_attribute(in_object, KPDS_VALUE_SIZE, &w, &h, &d, &t, &e);           

  plane = (unsigned char *)kmalloc(w*h*sizeof(unsigned char));
  res_plane = (char *)kmalloc(w*h*sizeof(unsigned char));
  if (!plane || !res_plane) {
     kerror(lib, rtn, "Could not allocate memory for the image\n");
     kexit(KEXIT_FAILURE);
  }
/* -main_before_lib_call_end */

/* -main_library_call */
  for (ct = 0; ct < t; ct++) {
		min = 255;
		max = 0;
    kpds_set_attribute(in_object, KPDS_VALUE_POSITION, 0, 0, 0, ct, 0);
    kpds_get_data(in_object, KPDS_VALUE_PLANE, (kaddr)plane);
    kmemset(res_plane, 0, w*h*sizeof(char));

    /* meghatározzuk a hisztogram szélességét */
    for (ch = 0; ch < h; ch++) {
      for (cw = 0; cw < w; cw++) {
        pos = ch*w + cw;
	
	    	if ( min > plane[pos] ) min = plane[pos];
		    if ( max < plane[pos] ) max = plane[pos];
	
      }
    }
    histw = max - min;	/* a szélesség a maximum és minimum különbsége lesz */

    /* eltoljuk a hisztogramot a 0-ba */
    for (ch = 0; ch < h; ch++) {
      for (cw = 0; cw < w; cw++) {
        pos = ch*w + cw;
	  res_plane[pos] = plane[pos] - min;
				
      }
    }
	
    /* transzformáljuk a hisztogramot 0-255 közé */	
    for (ch = 0; ch < h; ch++) {
      for (cw = 0; cw < w; cw++) {
        pos = ch*w + cw;
	      res_plane[pos] = res_plane[pos] * 255 / histw;
				
      }
    }
		
    kpds_set_attribute(out_object, KPDS_VALUE_POSITION, 0, 0, 0, ct, 0);
    kpds_put_data(out_object, KPDS_VALUE_PLANE, (kaddr)res_plane);
  }
/* -main_library_call_end */

/* -main_after_lib_call */
   if (!kpds_set_attribute(out_object, KPDS_HISTORY, kpds_history_string())) {
     kerror(lib,rtn,"Unable to set history on the destination object");
     kexit(KEXIT_FAILURE);
   }
   if (plane)
     kfree(plane);
   if (res_plane)
     kfree(res_plane);
   kpds_close_object(in_object);
   kpds_close_object(out_object);
/* -main_after_lib_call_end */


	kexit(KEXIT_SUCCESS);
}


/*-----------------------------------------------------------
| 
|  Routine Name: myhistogramstretch_usage_additions
| 
|       Purpose: Prints usage additions in myhistogramstretch_usage routine
| 
|         Input: None
| 
|        Output: None
|    Written By: ghostwriter -oname myhistogramstretch
|          Date: July 1, 1997
| Modifications: 
| 
------------------------------------------------------------*/
void myhistogramstretch_usage_additions(void)
{
	kfprintf(kstderr, "\tMy Histogram Stretch\n");

/* -usage_additions */
/* -usage_additions_end */

}
/*-----------------------------------------------------------
| 
|  Routine Name: myhistogramstretch_free_args
| 
|       Purpose: Frees CLUI struct allocated in myhistogramstretch_get_args()
| 
|         Input: None
| 
|        Output: None
|    Written By: ghostwriter -oname myhistogramstretch
|          Date: July 1, 1997
| Modifications: 
| 
------------------------------------------------------------*/
/* ARGSUSED */
void
myhistogramstretch_free_args(
    kexit_status status,
    kaddr        client_data)
{

	/* do the wild and free thing */
	if (clui_info != NULL)
	{
		kfree_and_NULL(clui_info->i_file);
		kfree_and_NULL(clui_info->o_file);
		kfree_and_NULL(clui_info);
	}

/* -free_handler_additions */
/* -free_handler_additions_end */
}