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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
*
* Purpose: Codec class for encoding JPEG Spectral Selection (lossy, 8/12-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/djencsps.h"
#include "dcmtk/dcmjpeg/djcparam.h"
#include "dcmtk/dcmjpeg/djrploss.h"
#include "dcmtk/dcmjpeg/djeijg8.h"
#include "dcmtk/dcmjpeg/djeijg12.h"
DJEncoderSpectralSelection::DJEncoderSpectralSelection()
: DJCodecEncoder()
{
}
DJEncoderSpectralSelection::~DJEncoderSpectralSelection()
{
}
E_TransferSyntax DJEncoderSpectralSelection::supportedTransferSyntax() const
{
return EXS_JPEGProcess6_8TransferSyntax;
}
OFBool DJEncoderSpectralSelection::isLosslessProcess() const
{
return OFFalse;
}
void DJEncoderSpectralSelection::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 spectral selection ";
if (bitsPerSample > 8) derivationDescription += "12 bit"; else derivationDescription += "8 bit";
derivationDescription += ", IJG quality factor ";
sprintf(buf, "%u", rp->getQuality());
derivationDescription += buf;
derivationDescription += ", compression ratio ";
appendCompressionRatio(derivationDescription, ratio);
}
DJEncoder *DJEncoderSpectralSelection::createEncoderInstance(
const DcmRepresentationParameter * toRepParam,
const DJCodecParameter *cp,
Uint8 bitsPerSample) const
{
DJ_RPLossy defaultRP;
const DJ_RPLossy *rp = toRepParam ? (const DJ_RPLossy *)toRepParam : &defaultRP ;
DJEncoder *result = NULL;
if (bitsPerSample > 8)
result = new DJCompressIJG12Bit(*cp, EJM_spectralSelection, rp->getQuality());
else result = new DJCompressIJG8Bit(*cp, EJM_spectralSelection, rp->getQuality());
return result;
}
/*
* CVS/RCS Log
* $Log: djencsps.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 15:43:47 meichel
* Changed include path schema for all DCMTK header files
*
* Revision 1.1 2001/11/13 15:58:33 meichel
* Initial release of module dcmjpeg
*
*
*/
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