116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
/*
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*
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* Copyright (C) 1996-2016, OFFIS e.V.
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* All rights reserved. See COPYRIGHT file for details.
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*
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* This software and supporting documentation were developed by
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*
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* OFFIS e.V.
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* R&D Division Health
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* Escherweg 2
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* D-26121 Oldenburg, Germany
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*
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*
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* Module: dcmimage
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*
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* Author: Joerg Riesmeier
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*
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* Purpose: DicomPalettePixelTemplate (Header)
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*
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*/
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#ifndef DIPALPXT_H
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#define DIPALPXT_H
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#include "dcmtk/config/osconfig.h"
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#include "dcmtk/dcmimage/dicopxt.h"
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#include "dcmtk/dcmimgle/diluptab.h"
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#include "dcmtk/dcmimgle/diinpx.h" /* gcc 3.4 needs this */
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/*---------------------*
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* class declaration *
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*---------------------*/
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/** Template class to handle Palette color pixel data
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*/
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template<class T1, class T2, class T3>
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class DiPalettePixelTemplate
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: public DiColorPixelTemplate<T3>
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{
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public:
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/** constructor
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*
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** @param docu pointer to DICOM document
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* @param pixel pointer to input pixel representation
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* @param palette pointer to RGB color palette
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* @param status reference to status variable
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*/
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DiPalettePixelTemplate(const DiDocument *docu,
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const DiInputPixel *pixel,
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DiLookupTable *palette[3],
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EI_Status &status)
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: DiColorPixelTemplate<T3>(docu, pixel, 1, status)
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{
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if ((pixel != NULL) && (this->Count > 0) && (status == EIS_Normal))
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{
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if (this->PlanarConfiguration)
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{
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status = EIS_InvalidValue;
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DCMIMAGE_ERROR("invalid value for 'PlanarConfiguration' (" << this->PlanarConfiguration << ")");
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}
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else
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convert(OFstatic_cast(const T1 *, pixel->getData()) + pixel->getPixelStart(), palette);
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}
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}
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/** destructor
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*/
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virtual ~DiPalettePixelTemplate()
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{
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}
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private:
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/** convert input pixel data to intermediate representation
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*
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** @param pixel pointer to input pixel data
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* @param palette pointer to RGB color palette
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*/
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void convert(const T1 *pixel,
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DiLookupTable *palette[3])
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{ // can be optimized if necessary !
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if (this->Init(pixel))
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{
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const T1 *p = pixel;
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T2 value = 0;
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unsigned long i;
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int j;
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// use the number of input pixels derived from the length of the 'PixelData'
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// attribute), but not more than the size of the intermediate buffer
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const unsigned long count = (this->InputCount < this->Count) ? this->InputCount : this->Count;
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for (i = 0; i < count; ++i)
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{
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value = OFstatic_cast(T2, *(p++));
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for (j = 0; j < 3; ++j)
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{
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if (value <= palette[j]->getFirstEntry(value))
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this->Data[j][i] = OFstatic_cast(T3, palette[j]->getFirstValue());
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else if (value >= palette[j]->getLastEntry(value))
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this->Data[j][i] = OFstatic_cast(T3, palette[j]->getLastValue());
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else
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this->Data[j][i] = OFstatic_cast(T3, palette[j]->getValue(value));
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}
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}
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}
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}
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};
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#endif
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