147 lines
4.5 KiB
C++
147 lines
4.5 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: DicomCMYKPixelTemplate (Header)
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*
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*/
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#ifndef DICMYPXT_H
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#define DICMYPXT_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/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 CMYK pixel data
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*/
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template<class T1, class T2>
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class DiCMYKPixelTemplate
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: public DiColorPixelTemplate<T2>
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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 status reference to status variable
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* @param planeSize number of pixels in a plane
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* @param bits number of bits per sample
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*/
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DiCMYKPixelTemplate(const DiDocument *docu,
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const DiInputPixel *pixel,
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EI_Status &status,
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const unsigned long planeSize,
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const int bits)
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: DiColorPixelTemplate<T2>(docu, pixel, 4, status)
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{
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if ((pixel != NULL) && (this->Count > 0) && (status == EIS_Normal))
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convert(OFstatic_cast(const T1 *, pixel->getData()) + pixel->getPixelStart(), planeSize, bits);
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}
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/** destructor
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*/
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virtual ~DiCMYKPixelTemplate()
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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 planeSize number of pixels in a plane
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* @param bits number of bits per sample
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*/
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void convert(const T1 *pixel,
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const unsigned long planeSize,
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const int bits)
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{
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if (this->Init(pixel))
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{
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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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const T2 maxvalue = OFstatic_cast(T2, DicomImageClass::maxval(bits));
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const T1 offset = OFstatic_cast(T1, DicomImageClass::maxval(bits - 1));
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const T1 *p = pixel;
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if (this->PlanarConfiguration)
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{
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/*
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const T1 *k;
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T2 *q;
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for (int j = 0; j < 3; ++j)
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{
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q = this->Data[j];
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k = pixel + 3 * this->InputCount; // beginning of 'black' plane
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for (i = count; i != 0; --i)
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*(q++) = maxvalue - removeSign(*(p++), offset) - removeSign(*(k++), offset);
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}
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*/
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const T1 *k;
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T2 *q;
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unsigned long l;
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unsigned long i = 0;
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while (i < count)
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{
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/* store current pixel index */
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const unsigned long iStart = i;
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/* beginning of 'black' plane */
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const T1 *kStart = p + 3 * planeSize;
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/* for all planes ... */
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for (int j = 0; j < 3; ++j)
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{
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q = this->Data[j] + iStart;
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/* reset to beginning of 'black' plane */
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k = kStart;
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/* convert a single plane */
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for (l = planeSize, i = iStart; (l != 0) && (i < count); --l, ++i)
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*(q++) = maxvalue - removeSign(*(p++), offset) - removeSign(*(k++), offset);
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}
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/* skip black plane */
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p += planeSize;
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}
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}
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else
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{
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T1 k;
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int j;
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unsigned long i;
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for (i = 0; i < count; ++i)
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{
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k = *(p + 3);
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for (j = 0; j < 3; ++j)
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this->Data[j][i] = maxvalue - removeSign(*(p++), offset) - removeSign(k, offset);
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++p; // skip 'black'
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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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