dicoopxt.h

转化为DIB位图再显示出来的dicom文件C++代码

/*
 *
 *  Copyright (C) 1996-2005, OFFIS
 *
 *  This software and supporting documentation were developed by
 *
 *    Kuratorium OFFIS e.V.
 *    Healthcare Information and Communication Systems
 *    Escherweg 2
 *    D-26121 Oldenburg, Germany
 *
 *  THIS SOFTWARE IS MADE AVAILABLE,  AS IS,  AND OFFIS MAKES NO  WARRANTY
 *  REGARDING  THE  SOFTWARE,  ITS  PERFORMANCE,  ITS  MERCHANTABILITY  OR
 *  FITNESS FOR ANY PARTICULAR USE, FREEDOM FROM ANY COMPUTER DISEASES  OR
 *  ITS CONFORMITY TO ANY SPECIFICATION. THE ENTIRE RISK AS TO QUALITY AND
 *  PERFORMANCE OF THE SOFTWARE IS WITH THE USER.
 *
 *  Module:  dcmimgle
 *
 *  Author:  Joerg Riesmeier
 *
 *  Purpose: DicomColorOutputPixelTemplate (Header)
 *
 *  Last Update:      $Author: meichel $
 *  Update Date:      $Date: 2005/12/08 16:01:33 $
 *  CVS/RCS Revision: $Revision: 1.24 $
 *  Status:           $State: Exp $
 *
 *  CVS/RCS Log at end of file
 *
 */


#ifndef DICOOPXT_H
#define DICOOPXT_H

#include "dcmtk/config/osconfig.h"
#include "dcmtk/dcmdata/dctypes.h"

#include "dcmtk/dcmimage/dicoopx.h"
#include "dcmtk/dcmimage/dicopx.h"
#include "dcmtk/dcmimgle/dipxrept.h"
#include "dcmtk/dcmimgle/diutils.h"


/*---------------------*
 *  class declaration  *
 *---------------------*/

/** Template class to create color output data
 */
template<class T1, class T2>
class DiColorOutputPixelTemplate
  : public DiColorOutputPixel,
    public DiPixelRepresentationTemplate<T2>
{

 public:

    /** constructor
     *
     ** @param  buffer   storage area for the output pixel data (optional, maybe NULL)
     *  @param  pixel    pointer to intermediate pixel representation (color)
     *  @param  count    number of pixels per frame
     *  @param  frame    frame to be rendered
     *  @param  bits1    bit depth of input data (intermediate)
     *  @param  bits2    bit depth of output data
     *  @param  planar   flag indicating whether data shall be stored color-by-pixel or color-by-plane
     *  @param  inverse  invert pixel data if true (0/0/0 = white)
     */
    DiColorOutputPixelTemplate(void *buffer,
                               const DiColorPixel *pixel,
                               const unsigned long count,
                               const unsigned long frame,
                               const int bits1, /* input depth */
                               const int bits2, /* output depth */
                               const int planar,
                               const int inverse)
      : DiColorOutputPixel(pixel, count, frame),
        Data(NULL),
        DeleteData(buffer == NULL),
        isPlanar(planar)
    {
        if ((pixel != NULL) && (Count > 0) && (FrameSize >= Count))
        {
            Data = OFstatic_cast(T2 *, buffer);
            convert(OFstatic_cast(const T1 **, OFconst_cast(void *, pixel->getData())), frame * FrameSize, bits1, bits2, planar, inverse);
        }
    }

    /** constructor
     *
     ** @param  buffer  storage area for the output pixel data (optional, maybe NULL)
     *  @param  pixel   pointer to intermediate pixel representation
     *  @param  count   number of pixels per frame
     *  @param  frame   frame to be rendered
     *  #param  frames  (total number of frames present in intermediate representation)
     *  @param  planar  flag indicating whether data shall be stored color-by-pixel or color-by-plane
     */
    DiColorOutputPixelTemplate(void *buffer,
                               const DiPixel *pixel,
                               const unsigned long count,
                               const unsigned long frame,
                               const unsigned long /*frames*/,
                               const int planar)
      : DiColorOutputPixel(pixel, count, frame),
        Data(NULL),
        DeleteData(buffer == NULL),
        isPlanar(planar)
    {
        if ((pixel != NULL) && (Count > 0) && (FrameSize >= Count))
            Data = OFstatic_cast(T2 *, buffer);
    }

    /** destructor
     */
    virtual ~DiColorOutputPixelTemplate()
    {
        if (DeleteData)
            delete[] Data;
    }

    /** get integer representation
     *
     ** @return integer representation
     */
    inline EP_Representation getRepresentation() const
    {
        return DiPixelRepresentationTemplate<T2>::getRepresentation();
    }

    /** get size of one pixel / item in the pixel array
     *
     ** @return item size
     */
    inline size_t getItemSize() const
    {
        return sizeof(T2) * 3;
    }

    /** get pointer to output pixel data
     *
     ** @return pointer to pixel data
     */
    inline const void *getData() const
    {
        return OFstatic_cast(const void *, Data);
    }

    /** get pointer to output pixel data
     *
     ** @return pointer to pixel data
     */
    virtual void *getDataPtr()
    {
        return OFstatic_cast(void *, Data);
    }

    /** get pointer to given plane of output pixel data
     *
     ** @param  plane  number of the plane to be retrieved (0..2)
     *
     ** @return pointer to beginning of plane if sucessful, NULL otherwise
     */
    inline const void *getPlane(const int plane) const
    {
        void *result = NULL;
        if (Data != NULL)
        {
            if (plane <= 0)
                result = OFstatic_cast(void *, Data);
            else
            {
                if (isPlanar)
                    result = OFstatic_cast(void *, Data + ((plane == 1) ? 1 : 2) * FrameSize);
                else
                    result = OFstatic_cast(void *, Data + ((plane == 1) ? 1 : 2));
            }
        }
        return result;
    }

    /** write pixel data of selected frame to PPM/ASCII file
     *
     ** @param  stream  open C++ output stream
     *
     ** @return status, true if successful, false otherwise
     */
    int writePPM(ostream &stream) const
    {
        if (Data != NULL)
        {
            register T2 *p = Data;
            register unsigned long i;
            register int j;
            for (i = FrameSize; i != 0; --i)
                for (j = 3; j != 0; --j)
                    stream << OFstatic_cast(unsigned long, *(p++)) << " ";     // typecast to resolve problems with 'char'
            return 1;
        }
        return 0;
    }

    /** write pixel data of selected frame to PPM/ASCII file
     *
     ** @param  stream  open C file stream
     *
     ** @return status, true if successful, false otherwise
     */
    int writePPM(FILE *stream) const
    {
        if (Data != NULL)
        {
            register T2 *p = Data;
            register unsigned long i;
            register int j;
            for (i = FrameSize; i != 0; --i)
                for (j = 3; j != 0; --j)
                    fprintf(stream, "%lu ", OFstatic_cast(unsigned long, *(p++)));
            return 1;
        }
        return 0;
    }


 protected:

    /// pointer to the storage area where the output data should be stored
    T2 *Data;


 private:

    /** convert intermediate pixel data to output format (render pixel data)
     *
     ** @param  pixel    pointer to intermediate pixel representation (color)
     *  @param  start    offset to first pixel to be converted
     *  @param  bits1    bit depth of input data (intermediate)
     *  @param  bits2    bit depth of output data
     *  @param  planar   flag indicating whether data shall be stored color-by-pixel or color-by-plane
     *  @param  inverse  invert pixel data if true (0/0/0 = white)
     */
    void convert(const T1 *pixel[3],
                 const unsigned long start,
                 const int bits1,
                 const int bits2,
                 const int planar,
                 const int inverse)
    {
        if ((pixel[0] != NULL) && (pixel[1] != NULL) && (pixel[2] != NULL))
        {
            if (Data == NULL)
                Data = new T2[FrameSize * 3];
            if (Data != NULL)
            {
                register T2 *q = Data;