dcmjpls/include/dcmtk/dcmjpls/djcodecd.h

/*
 *
 *  Copyright (C) 2007-2010, 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:  dcmjpls
 *
 *  Author:  Martin Willkomm, Marco Eichelberg
 *
 *  Purpose: codec classes for JPEG-LS decoders.
 *
 *  Last Update:      $Author: joergr $
 *  Update Date:      $Date: 2010-10-14 13:17:19 $
 *  CVS/RCS Revision: $Revision: 1.6 $
 *  Status:           $State: Exp $
 *
 *  CVS/RCS Log at end of file
 *
 */

#ifndef DCMJPLS_DJCODECD_H
#define DCMJPLS_DJCODECD_H

#include "dcmtk/config/osconfig.h"
#include "dcmtk/dcmdata/dccodec.h"  /* for class DcmCodec */
#include "dcmtk/ofstd/ofstring.h"

/* forward declaration */
class DJLSCodecParameter;

class DJLSDecoderBase: public DcmCodec
{
public:

  DJLSDecoderBase();

  virtual ~DJLSDecoderBase();

  virtual OFCondition decode(
    const DcmRepresentationParameter * fromRepParam,
    DcmPixelSequence * pixSeq,
    DcmPolymorphOBOW& uncompressedPixelData,
    const DcmCodecParameter * cp,
    const DcmStack& objStack) const;

  virtual OFCondition decodeFrame(
    const DcmRepresentationParameter * fromParam,
    DcmPixelSequence * fromPixSeq,
    const DcmCodecParameter * cp,
    DcmItem *dataset,
    Uint32 frameNo,
    Uint32& startFragment,
    void *buffer,
    Uint32 bufSize,
    OFString& decompressedColorModel) const;

  virtual OFCondition encode(
    const Uint16 * pixelData,
    const Uint32 length,
    const DcmRepresentationParameter * toRepParam,
    DcmPixelSequence * & pixSeq,
    const DcmCodecParameter *cp,
    DcmStack & objStack) const;

  virtual OFCondition encode(
    const E_TransferSyntax fromRepType,
    const DcmRepresentationParameter * fromRepParam,
    DcmPixelSequence * fromPixSeq,
    const DcmRepresentationParameter * toRepParam,
    DcmPixelSequence * & toPixSeq,
    const DcmCodecParameter * cp,
    DcmStack & objStack) const;

  virtual OFBool canChangeCoding(
    const E_TransferSyntax oldRepType,
    const E_TransferSyntax newRepType) const;

  virtual OFCondition determineDecompressedColorModel(
    const DcmRepresentationParameter *fromParam,
    DcmPixelSequence *fromPixSeq,
    const DcmCodecParameter *cp,
    DcmItem *dataset,
    OFString &decompressedColorModel) const;

private:

  // static private helper methods

  static OFCondition decodeFrame(
    DcmPixelSequence * fromPixSeq,
    const DJLSCodecParameter *cp,
    DcmItem *dataset,
    Uint32 frameNo,
    Uint32& startFragment,
    void *buffer,
    Uint32 bufSize,
    Sint32 imageFrames,
    Uint16 imageColumns,
    Uint16 imageRows,
    Uint16 imageSamplesPerPixel,
    Uint16 bytesPerSample);

  static Uint16 determinePlanarConfiguration(
    const OFString& sopClassUID,
    const OFString& photometricInterpretation);

  static Uint32 computeNumberOfFragments(
    Sint32 numberOfFrames,
    Uint32 currentFrame,
    Uint32 startItem,
    OFBool ignoreOffsetTable,
    DcmPixelSequence *pixSeq);

  static OFBool isJPEGLSStartOfImage(Uint8 *fragmentData);

  static OFCondition createPlanarConfiguration1Byte(
    Uint8 *imageFrame,
    Uint16 columns,
    Uint16 rows);

  static OFCondition createPlanarConfiguration1Word(
    Uint16 *imageFrame,
    Uint16 columns,
    Uint16 rows);

  static OFCondition createPlanarConfiguration0Byte(
    Uint8 *imageFrame,
    Uint16 columns,
    Uint16 rows);

  static OFCondition createPlanarConfiguration0Word(
    Uint16 *imageFrame,
    Uint16 columns,
    Uint16 rows);
};

class DJLSLosslessDecoder : public DJLSDecoderBase
{
  virtual E_TransferSyntax supportedTransferSyntax() const;
};

class DJLSNearLosslessDecoder : public DJLSDecoderBase
{
  virtual E_TransferSyntax supportedTransferSyntax() const;
};

#endif

/*
 * CVS/RCS Log:
 * $Log: djcodecd.h,v $
 * Revision 1.6  2010-10-14 13:17:19  joergr
 * Updated copyright header. Added reference to COPYRIGHT file.
 *
 * Revision 1.5  2010-10-12 12:32:22  uli
 * Avoid redundant findAndGet*() calls.
 *
 * Revision 1.4  2010-03-01 10:35:28  uli
 * Renamed include guards to avoid name clash with e.g. dcmjpeg.
 *
 * Revision 1.3  2009-11-17 16:57:14  joergr
 * Added new method that allows for determining the color model of the
 * decompressed image.
 *
 * Revision 1.2  2009-10-07 13:16:47  uli
 * Switched to logging mechanism provided by the "new" oflog module.
 *
 * Revision 1.1  2009-07-29 14:46:46  meichel
 * Initial release of module dcmjpls, a JPEG-LS codec for DCMTK based on CharLS
 *
 * Revision 1.2  2008-05-29 10:54:05  meichel
 * Implemented new method DcmPixelData::getUncompressedFrame
 *   that permits frame-wise access to compressed and uncompressed
 *   objects without ever loading the complete object into main memory.
 *   For this new method to work with compressed images, all classes derived from
 *   DcmCodec need to implement a new method decodeFrame(). For now, only
 *   dummy implementations returning an error code have been defined.
 *
 * Revision 1.1  2007/06/15 14:35:45  meichel
 * Renamed CMake project and include directory from dcmjpgls to dcmjpls
 *
 * Revision 1.4  2007/06/15 10:39:15  meichel
 * Completed implementation of decoder, which now correctly processes all
 *   of the NEMA JPEG-LS sample images, including fragmented frames.
 *
 * Revision 1.3  2007/06/14 12:36:14  meichel
 * Further code clean-up. Updated doxygen comments.
 *
 * Revision 1.2  2007/06/13 16:41:07  meichel
 * Code clean-up and removal of dead code
 *
 *
 */

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