File: djencbas.cc

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/*
 *
 *  Copyright (C) 1997-2010, 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:  dcmjpeg
 *
 *  Author:  Marco Eichelberg, Norbert Olges
 *
 *  Purpose: Codec class for encoding JPEG Baseline (lossy, 8-bit)
 *
 *  Last Update:      $Author: joergr $
 *  Update Date:      $Date: 2010-10-14 13:14:22 $
 *  CVS/RCS Revision: $Revision: 1.3 $
 *  Status:           $State: Exp $
 *
 *  CVS/RCS Log at end of file
 *
 */

#include "dcmtk/config/osconfig.h"
#include "dcmtk/dcmjpeg/djencbas.h"
#include "dcmtk/dcmjpeg/djcparam.h"
#include "dcmtk/dcmjpeg/djrploss.h"
#include "dcmtk/dcmjpeg/djeijg8.h"


DJEncoderBaseline::DJEncoderBaseline()
: DJCodecEncoder()
{
}


DJEncoderBaseline::~DJEncoderBaseline()
{
}


E_TransferSyntax DJEncoderBaseline::supportedTransferSyntax() const
{
  return EXS_JPEGProcess1TransferSyntax;
}


OFBool DJEncoderBaseline::isLosslessProcess() const
{
  return OFFalse;
}


void DJEncoderBaseline::createDerivationDescription(
  const DcmRepresentationParameter * toRepParam,
  const DJCodecParameter * /* cp */,
  Uint8 /* bitsPerSample */ ,
  double ratio,
  OFString& derivationDescription) const
{
  DJ_RPLossy defaultRP;
  const DJ_RPLossy *rp = toRepParam ? (const DJ_RPLossy *)toRepParam : &defaultRP ;
  char buf[64];
 
  derivationDescription =  "Lossy compression with JPEG baseline, IJG quality factor ";
  sprintf(buf, "%u", rp->getQuality());
  derivationDescription += buf;
  derivationDescription += ", compression ratio ";
  appendCompressionRatio(derivationDescription, ratio);
}


DJEncoder *DJEncoderBaseline::createEncoderInstance(
    const DcmRepresentationParameter * toRepParam,
    const DJCodecParameter *cp,
    Uint8 /* bitsPerSample */) const
{
  DJ_RPLossy defaultRP;
  const DJ_RPLossy *rp = toRepParam ? (const DJ_RPLossy *)toRepParam : &defaultRP ;
  DJCompressIJG8Bit *result = new DJCompressIJG8Bit(*cp, EJM_baseline, rp->getQuality());

  return result;
}


/*
 * CVS/RCS Log
 * $Log: djencbas.cc,v $
 * Revision 1.3  2010-10-14 13:14:22  joergr
 * Updated copyright header. Added reference to COPYRIGHT file.
 *
 * Revision 1.2  2005-12-08 15:43:42  meichel
 * Changed include path schema for all DCMTK header files
 *
 * Revision 1.1  2001/11/13 15:58:31  meichel
 * Initial release of module dcmjpeg
 *
 *
 */