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/** \file
* \brief Image Conversion
*
* See Copyright Notice in im_lib.h
* $Id: im_convertbitmap.cpp,v 1.1 2008/10/17 06:10:16 scuri Exp $
*/
#include "im.h"
#include "im_util.h"
#include "im_complex.h"
#include "im_image.h"
#include "im_convert.h"
#include "im_counter.h"
#include <stdlib.h>
#include <assert.h>
#include <memory.h>
int imConvertToBitmap(const imImage* src_image, imImage* dst_image, int cpx2real, float gamma, int abssolute, int cast_mode)
{
assert(src_image);
assert(dst_image);
if (!imImageMatchSize(src_image, dst_image) || !imImageIsBitmap(dst_image))
return IM_ERR_DATA;
int counter = imCounterBegin("Building Bitmap");
int ret;
if (src_image->data_type == IM_BYTE)
{
// NO data type conversion, only color mode conversion
ret = imConvertColorSpace(src_image, dst_image);
}
else
{
if (src_image->color_space == IM_RGB ||
src_image->color_space == IM_GRAY)
{
// data type conversion, but NO color mode conversion
ret = imConvertDataType(src_image, dst_image, cpx2real, gamma, abssolute, cast_mode);
}
else
{
// data type conversion AND color mode conversion
imImage* temp_image = imImageCreate(src_image->width, src_image->height, dst_image->color_space, src_image->data_type);
if (!temp_image)
ret = IM_ERR_MEM;
else
{
// first convert color_mode in the bigger precision
ret = imConvertColorSpace(src_image, temp_image);
if (ret == IM_ERR_NONE)
{
// second just convert data type
ret = imConvertDataType(temp_image, dst_image, cpx2real, gamma, abssolute, cast_mode);
}
imImageDestroy(temp_image);
}
}
}
imCounterEnd(counter);
return ret;
}
template <class T>
void iDoChangePacking(const T* src_data, T* dst_data, int width, int height, int depth,
int src_is_packed)
{
int count = width*height;
if (src_is_packed)
{
for (int i = 0; i < count; i++)
{
for (int d = 0; d < depth; d++)
{
*(dst_data + d*count) = *src_data++;
}
dst_data++;
}
}
else
{
for (int i = 0; i < count; i++)
{
for (int d = 0; d < depth; d++)
{
*dst_data++ = *(src_data + d*count);
}
src_data++;
}
}
}
void imConvertPacking(const void* src_data, void* dst_data, int width, int height, int depth,
int data_type, int src_is_packed)
{
switch(data_type)
{
case IM_BYTE:
iDoChangePacking((const imbyte*)src_data, (imbyte*)dst_data, width, height, depth, src_is_packed);
break;
case IM_USHORT:
iDoChangePacking((const imushort*)src_data, (imushort*)dst_data, width, height, depth, src_is_packed);
break;
case IM_INT:
iDoChangePacking((const int*)src_data, (int*)dst_data, width, height, depth, src_is_packed);
break;
case IM_FLOAT:
iDoChangePacking((const float*)src_data, (float*)dst_data, width, height, depth, src_is_packed);
break;
case IM_CFLOAT:
iDoChangePacking((const imcfloat*)src_data, (imcfloat*)dst_data, width, height, depth, src_is_packed);
break;
}
}
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