dicoimg.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:  dcmimage
 *
 *  Author:  Joerg Riesmeier
 *
 *  Purpose: DicomColorImage (Header)
 *
 *  Last Update:         $Author: meichel $
 *  Update Date:         $Date: 2005/12/08 16:01:30 $
 *  CVS/RCS Revision:    $Revision: 1.23 $
 *  Status:              $State: Exp $
 *
 *  CVS/RCS Log at end of file
 *
 */


#ifndef DICOIMG_H
#define DICOIMG_H

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

#include "dcmtk/dcmimgle/diimage.h"
#include "dcmtk/dcmimage/dicopx.h"
#include "dcmtk/dcmimgle/diutils.h"


/*------------------------*
 *  forward declarations  *
 *------------------------*/

class DiColorOutputPixel;


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

/** Base class for color images
 */
class DiColorImage
  : public DiImage
{

 public:

    /** constructor
     *
     ** @param  docu    pointer to the DICOM document
     *  @param  status  status of the image object
     *  @param  spp     sample per pixel (1, 3 or 4 depending on the color model)
     *  @param  rgb     specifies whether internal image representation is in RGB format
     */
    DiColorImage(const DiDocument *docu,
                 const EI_Status status,
                 const int spp,
                 const OFBool rgb = OFTrue);

    /** destructor
     */
    virtual ~DiColorImage();

    /** get color model of internal pixel representation.
     *
     ** @return returns EPI_RGB or EPI_YBR_Full depending on the 'rgb' flag in the constructor
     */
    virtual EP_Interpretation getInternalColorModel() const
    {
        return (RGBColorModel) ? EPI_RGB : EPI_YBR_Full;
    }

    /** get number of bytes required for the rendered output of a single frame
     *
     *  @param  bits  number of bits for the output pixel data (depth)
     *
     ** @return number of bytes if successful, 0 otherwise
     */
    virtual unsigned long getOutputDataSize(const int bits = 0) const;

    /** get pixel data with specified format.
     *  (memory is handled internally)
     *  The standard color model of the pixel data is RGB, but if the flag "rgb" is OFFalse
     *  and the original color model was YCbCr_Full or YCbCr_Full_422 YCbCr_Full is used instead.
     *
     ** @param  frame   number of frame to be rendered
     *  @param  bits    number of bits per sample for the output pixel data (depth)
     *  @param  planar  0 = color-by-pixel (R1G1B1...R2G2B2...R3G2B2...)
     *                  1 = color-by-plane (R1R2R3...G1G2G3...B1B2B3...)
     *
     ** @return untyped pointer to the pixel data if successful, NULL otherwise
     */
    const void *getOutputData(const unsigned long frame,
                              const int bits,
                              const int planar = 0);

    /** get pixel data with specified format.
     *  (memory is handled externally)
     *  The standard color model of the pixel data is RGB, but if the flag "rgb" is OFFalse
     *  and the original color model was YCbCr_Full or YCbCr_Full_422 YCbCr_Full is used instead.
     *
     ** @param  buffer  untyped pointer to the externally allocated memory buffer
     *  @param  size    size of the memory buffer in bytes (will be checked)
     *  @param  frame   number of frame to be rendered
     *  @param  bits    number of bits per sample for the output pixel data (depth)
     *  @param  planar  0 = color-by-pixel (R1G1B1...R2G2B2...R3G2B2...)
     *                  1 = color-by-plane (R1R2R3...G1G2G3...B1B2B3...)
     *
     ** @return status, true if successful, false otherwise
     */
    int getOutputData(void *buffer,
                      const unsigned long size,
                      const unsigned long frame,
                      const int bits,
                      const int planar = 0);

    /** get pixel data of specified plane.
     *  (memory is handled internally)
     *
     ** @param  plane  index of color plane
     *
     ** @return untyped pointer to the pixel data if successful, NULL otherwise
     */
    const void *getOutputPlane(const int plane) const;

    /** delete internally handled output memory buffer
     *  Save memory if data is no longer needed.
     */
    void deleteOutputData();

    /** create copy of current image object
     *
     ** @param  fstart  first frame to be processed
     *  @param  fcount  number of frames
     *
     ** @return pointer to new DicomImage object (NULL if an error occurred)
     */
    DiImage *createImage(const unsigned long fstart,
                         const unsigned long fcount) const;

    /** create scaled copy of specified (clipping) area of the current image object.
     *
     ** @param  left_pos      x coordinate of top left corner of area to be scaled
     *                        (referring to image origin, negative values create a border around the image)
     *  @param  top_pos       y coordinate of top left corner of area to be scaled
     *  @param  src_cols      width of area to be scaled
     *  @param  src_rows      height of area to be scaled
     *  @param  dest_cols     width of scaled image (in pixels)
     *  @param  dest_rows     height of scaled image (in pixels)
     *  @param  interpolate   specifies whether scaling algorithm should use interpolation (if necessary)
     *                        default: no interpolation (0), 1 = pbmplus algorithm, 2 = c't algorithm
     *  @param  aspect        specifies whether pixel aspect ratio should be taken into consideration
     *                        (if true, width OR height should be 0, i.e. this component will be calculated
     *                         automatically)
     *  @param  pvalue        dummy parameter (only used for monochrome images)
     *
     ** @return pointer to new DiImage object (NULL if an error occurred)
     */
    DiImage *createScale(const signed long left_pos,
                         const signed long top_pos,
                         const unsigned long src_cols,
                         const unsigned long src_rows,
                         const unsigned long dest_cols,
                         const unsigned long dest_rows,
                         const int interpolate,
                         const int aspect,
                         const Uint16 pvalue) const;

    /** flip current image (horizontally and/or vertically)
     *
     ** @param  horz  flip horizontally if true
     *  @param  vert  flip vertically if true
     *
     ** @return true if successful (1 = flipped at least direction,
     *                              2 = not flipped, because of image resolution - width and/or height equal to 1),
     *          false otherwise
     */
    int flip(const int horz,
             const int vert);

    /** create a flipped copy of the current image
     *
     ** @param  horz  flip horizontally if true
     *  @param  vert  flip vertically if true
     *
     ** @return pointer to new DiImage object (NULL if an error occurred)
     */
    DiImage *createFlip(const int horz,
                        const int vert) const;

    /** rotate current image (by steps of 90 degrees)
     *
     ** @param  degree  angle by which the image shall be rotated (-360, -270, -180, -90, 0, 90, 180, 270, 360)
     *
     ** @return true if successful (1 = rotated by at least 90 degrees,
     *                              2 = not rotated, because of image resolution or angle),
     *          false otherwise
     */
    int rotate(const int degree);

    /** create a rotated copy of the current image.
     *
     ** @param  degree  angle by which the image shall be rotated
     *
     ** @return pointer to new DiImage object (NULL if an error occurred)
     */
    DiImage *createRotate(const int degree) const;

    /** create monochrome copy of the current image
     *
     ** @param  red    coefficient by which the red component is weighted
     *  @param  green  coefficient by which the green component is weighted
     *  @param  blue   coefficient by which the blue component is weighted
     *
     ** @return pointer to new DiImage object (NULL if an error occurred)
     */
    DiImage *createMono(const double red,
                        const double green,
                        const double blue) const;

    /** get pointer to intermediate pixel data representation
     *
     ** @return pointer to intermediate pixel data
     */
    const DiPixel *getInterData() const
    {
        return InterData;
    }

    /** get pointer to intermediate pixel data representation
     *
     ** @return pointer to intermediate pixel data
     */
    const DiColorPixel *getColorInterData() const
    {
        return InterData;
    }

    /** create true color (24/32 bit) bitmap for MS Windows.
     *  memory is not handled internally - must be deleted from calling program.
     *
     ** @param  data        untyped pointer memory buffer (set to NULL if not allocated externally)
     *  @param  size        size of the memory buffer in bytes (if 0 'data' is set to NULL)
     *  @param  frame       index of frame to be converted (starting from 0)
     *  @param  bits        number of bits per pixel used for the output bitmap (24 or 32)
     *  @param  upsideDown  specifies the order of lines in the images (0 = top-down, bottom-up otherwise)
     *  @param  padding     align each line to a 32-bit address if true (default)
     *
     ** @return number of bytes allocated by the bitmap, or 0 if an error occured
     */
    unsigned long createDIB(void *&data,
                            const unsigned long size,
                            const unsigned long frame,
                            const int bits,