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/** \file
* \brief Logical Arithmetic Operations
*
* See Copyright Notice in im_lib.h
* $Id: im_logic.cpp,v 1.1 2008/10/17 06:16:33 scuri Exp $
*/
#include <im.h>
#include <im_util.h>
#include "im_process_pon.h"
#include <stdlib.h>
#include <memory.h>
template <class T>
static void DoBitwiseOp(T *map1, T *map2, T *map, int count, int op)
{
int i;
switch(op)
{
case IM_BIT_AND:
for (i = 0; i < count; i++)
map[i] = map1[i] & map2[i];
break;
case IM_BIT_OR:
for (i = 0; i < count; i++)
map[i] = map1[i] | map2[i];
break;
case IM_BIT_XOR:
for (i = 0; i < count; i++)
map[i] = (T)~(map1[i] | map2[i]);
break;
}
}
void imProcessBitwiseOp(const imImage* src_image1, const imImage* src_image2, imImage* dst_image, int op)
{
int count = src_image1->count*src_image1->depth;
switch(src_image1->data_type)
{
case IM_BYTE:
DoBitwiseOp((imbyte*)src_image1->data[0], (imbyte*)src_image2->data[0], (imbyte*)dst_image->data[0], count, op);
break;
case IM_USHORT:
DoBitwiseOp((imushort*)src_image1->data[0], (imushort*)src_image2->data[0], (imushort*)dst_image->data[0], count, op);
break;
case IM_INT:
DoBitwiseOp((int*)src_image1->data[0], (int*)src_image2->data[0], (int*)dst_image->data[0], count, op);
break;
}
}
template <class T>
static void DoBitwiseNot(T *map1, T *map, int count)
{
for (int i = 0; i < count; i++)
map[i] = ~map1[i];
}
static void DoBitwiseNotBin(imbyte *map1, imbyte *map, int count)
{
for (int i = 0; i < count; i++)
map[i] = map1[i]? 0: 1;
}
void imProcessBitwiseNot(const imImage* src_image, imImage* dst_image)
{
int count = src_image->count*src_image->depth;
if (dst_image->color_space == IM_BINARY)
{
DoBitwiseNotBin((imbyte*)src_image->data[0], (imbyte*)dst_image->data[0], count);
return;
}
switch(src_image->data_type)
{
case IM_BYTE:
DoBitwiseNot((imbyte*)src_image->data[0], (imbyte*)dst_image->data[0], count);
break;
case IM_USHORT:
DoBitwiseNot((imushort*)src_image->data[0], (imushort*)dst_image->data[0], count);
break;
case IM_INT:
DoBitwiseNot((int*)src_image->data[0], (int*)dst_image->data[0], count);
break;
}
}
void imProcessBitMask(const imImage* src_image, imImage* dst_image, unsigned char mask, int op)
{
imbyte* src_map = (imbyte*)src_image->data[0];
imbyte* dst_map = (imbyte*)dst_image->data[0];
int i;
int count = dst_image->count * dst_image->depth;
switch(op)
{
case IM_BIT_AND:
for (i = 0; i < count; i++)
*dst_map++ = *src_map++ & mask;
break;
case IM_BIT_OR:
for (i = 0; i < count; i++)
*dst_map++ = *src_map++ | mask;
break;
case IM_BIT_XOR:
for (i = 0; i < count; i++)
*dst_map++ = (imbyte)~(*src_map++ | mask);
break;
}
if ((op == IM_BIT_XOR || op == IM_BIT_OR) && dst_image->color_space == IM_BINARY && mask > 1)
dst_image->color_space = IM_GRAY;
}
void imProcessBitPlane(const imImage* src_image, imImage* dst_image, int plane, int reset)
{
imbyte mask = imbyte(0x01 << plane);
if (reset) mask = ~mask;
imbyte* src_map = (imbyte*)src_image->data[0];
imbyte* dst_map = (imbyte*)dst_image->data[0];
int count = dst_image->count * dst_image->depth;
for (int i = 0; i < count; i++)
{
if (reset)
*dst_map++ = *src_map & mask;
else
*dst_map++ = (*src_map & mask)? 1: 0;
src_map++;
}
}
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