#include "prj.h"
#include <time.h>

int mv2(short frame,short row,short column,short num)
{
  register short mx,my; /* testing motion vectors */
  short min_x,min_y,max_x,max_y; /* scale of testing */
  short vector_x,vector_y; /* save mv for temp */
  int curr_mad,value; /* current minimum mad value and current value */

  if(frame<=0 || frame>=FRAME) return 1;
  if(row<0 || row>ROW-N2) return 1;
  if(column<0 || column>COLUMN-N2) return 1;

  min_x=(column-N2<0)? 0:1-N2;
  max_x=(column+N2>COLUMN)? 0:N2-1;
  min_y=(row-N2<0)? 0:1-N2;
  max_y=(row+N2>ROW)? 0:N2-1;

  vector_x=0; vector_y=0;
  curr_mad=mad2(frame,row,column,0,0,999999,num);
  for(my=min_y;my<=max_y;my++)
    for(mx=min_x;mx<max_x;mx++){
      value=mad2(frame,row,column,my,mx,curr_mad,num);
      tot_count++;
      if(value<curr_mad){
	vector_y=my;
	vector_x=mx;
	curr_mad=value;
      }else if(value==curr_mad)
	if(vector_x*vector_x+vector_y*vector_y>mx*mx+my*my){
	  vector_y=my;
	  vector_x=mx;
	}
    }

  mad_value[frame][row/N2][column/N2]=curr_mad;
  mv_y[frame][row/N2][column/N2]=vector_y;
  mv_x[frame][row/N2][column/N2]=vector_x;

  return 0;
}