/*********************************************************************
 * Copyright (C) 2002 Maenpaa
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.Redistributions of source code must retain all copyright
 *   notices, this list of conditions and the following disclaimer.
 *
 * 2.Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * 3.The name(s) of the author(s) may not be used to endorse or
 *   promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *********************************************************************/

#ifndef _LBP_H
#define _LBP_H

#include <values.h>
#include <math.h>

/* Compare a value pointed to by 'ptr' to the 'center' value and
 * increment pointer. Comparison is made by masking the most
 * significant bit of an integer (the sign) and shifting it to an
 * appropriate position. */
#define compab_mask_inc(ptr,shift) { value |= ((unsigned int)(*center - *ptr - 1) & 0x80000000) >> (31-shift); ptr++; }
/* Compare a value 'val' to the 'center' value. */
#define compab_mask(val,shift) { value |= ((unsigned int)(*center - (val) - 1) & 0x80000000) >> (31-shift); }
/* Predicate 1 for the 3x3 neighborhood */
#define predicate 1
/* The number of bits */
#define bits 8

typedef struct
{
	int x,y;
} integerpoint;

typedef struct
{
	double x,y;
} doublepoint;

void calculate_points(void);
inline double interpolate_at_ptr(int* upperLeft, int i, int columns);
int* lbp_histogram(int* img, int rows, int columns, int* result, int interpolated);

#endif