/usr/include/dcmtk/dcmimage/diargpxt.h is in libdcmtk-dev 3.6.1~20160216-4.
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*
* Copyright (C) 1996-2011, OFFIS e.V.
* All rights reserved. See COPYRIGHT file for details.
*
* This software and supporting documentation were developed by
*
* OFFIS e.V.
* R&D Division Health
* Escherweg 2
* D-26121 Oldenburg, Germany
*
*
* Module: dcmimage
*
* Author: Joerg Riesmeier
*
* Purpose: DicomARGBPixelTemplate (Header) - UNTESTED !!!
*
*/
#ifndef DIARGPXT_H
#define DIARGPXT_H
#include "dcmtk/config/osconfig.h"
#include "dcmtk/dcmimage/dicopxt.h"
#include "dcmtk/dcmimgle/diluptab.h"
#include "dcmtk/dcmimgle/diinpx.h" /* gcc 3.4 needs this */
/*---------------------*
* class declaration *
*---------------------*/
/** Template class to handle ARGB pixel data
*/
template<class T1, class T2, class T3>
class DiARGBPixelTemplate
: public DiColorPixelTemplate<T3>
{
public:
/** constructor
*
** @param docu pointer to DICOM document
* @param pixel pointer to input pixel representation
* @param palette pointer to RGB color palette
* @param status reference to status variable
* @param planeSize number of pixels in a plane
* @param bits number of bits per sample
*/
DiARGBPixelTemplate(const DiDocument *docu,
const DiInputPixel *pixel,
DiLookupTable *palette[3],
EI_Status &status,
const unsigned long planeSize,
const int bits)
: DiColorPixelTemplate<T3>(docu, pixel, 4, status)
{
if ((pixel != NULL) && (this->Count > 0) && (status == EIS_Normal))
convert(OFstatic_cast(const T1 *, pixel->getData()) + pixel->getPixelStart(), palette, planeSize, bits);
}
/** destructor
*/
virtual ~DiARGBPixelTemplate()
{
}
private:
/** convert input pixel data to intermediate representation
*
** @param pixel pointer to input pixel data
* @param palette pointer to RGB color palette
* @param planeSize number of pixels in a plane
* @param bits number of bits per sample
*/
void convert(const T1 *pixel,
DiLookupTable *palette[3],
const unsigned long planeSize,
const int bits)
{ // not very much optimized, but no one really uses ARGB !!
if (this->Init(pixel))
{
register T2 value;
const T1 offset = OFstatic_cast(T1, DicomImageClass::maxval(bits - 1));
// use the number of input pixels derived from the length of the 'PixelData'
// attribute), but not more than the size of the intermediate buffer
const unsigned long count = (this->InputCount < this->Count) ? this->InputCount : this->Count;
if (this->PlanarConfiguration)
{
/*
register const T1 *a = pixel; // points to alpha plane
const T1 *rgb[3];
rgb[0] = a + this->InputCount; // points to red plane
rgb[1] = rgb[0] + this->InputCount; // points to green plane
rgb[2] = rgb[1] + this->InputCount; // points to blue plane
for (i = 0; i < count; ++i)
{
value = OFstatic_cast(T2, *(a++)); // get alpha value
if (value > 0)
{
for (int j = 0; j < 3; ++j) // set palette color
{
if (value <= palette[j]->getFirstEntry(value))
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getFirstValue());
else if (value >= palette[j]->getLastEntry(value))
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getLastValue());
else
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getValue(value));
++rgb[j]; // skip RGB values
}
}
else
{
for (j = 0; j < 3; ++j) // copy RGB values
this->Data[j][i] = OFstatic_cast(T3, removeSign(*(rgb[j]++), offset));
}
}
*/
register unsigned long l;
register unsigned long i = 0;
register const T1 *a = pixel; // points to alpha plane
const T1 *rgb[3];
rgb[0] = a + planeSize; // points to red plane
rgb[1] = rgb[0] + planeSize; // points to green plane
rgb[2] = rgb[1] + planeSize; // points to blue plane
while (i < count)
{
/* convert a single frame */
for (l = planeSize; (l != 0) && (i < count); --l, ++i)
{
value = OFstatic_cast(T2, *(a++)); // get alpha value
if (value > 0)
{
for (int j = 0; j < 3; ++j) // set palette color
{
if (value <= palette[j]->getFirstEntry(value))
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getFirstValue());
else if (value >= palette[j]->getLastEntry(value))
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getLastValue());
else
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getValue(value));
++rgb[j]; // skip RGB values
}
}
else
{
for (int j = 0; j < 3; ++j) // copy RGB values
this->Data[j][i] = OFstatic_cast(T3, removeSign(*(rgb[j]++), offset));
}
}
/* jump to next frame start (skip 2 planes) */
a += 2 * planeSize;
for (int j = 0; j < 3; ++j)
rgb[j] += 2 * planeSize;
}
} else {
register unsigned long i;
register const T1 *p = pixel;
for (i = 0; i < count; ++i)
{
value = OFstatic_cast(T2, *(p++)); // get alpha value
if (value > 0)
{
for (int j = 0; j < 3; ++j) // set palette color
{
if (value <= palette[j]->getFirstEntry(value))
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getFirstValue());
else if (value >= palette[j]->getLastEntry(value))
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getLastValue());
else
this->Data[j][i] = OFstatic_cast(T3, palette[j]->getValue(value));
}
p += 3; // skip RGB values
}
else
{
for (int j = 0; j < 3; ++j) // copy RGB values
this->Data[j][i] = OFstatic_cast(T3, removeSign(*(p++), offset));
}
}
}
}
}
};
#endif
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