DJDecoderRegistration Class Reference

singleton class that registers decoders for all supported JPEG processes. More...

Static Public Member Functions
static void	registerCodecs (E_DecompressionColorSpaceConversion pDecompressionCSConversion=EDC_photometricInterpretation, E_UIDCreation pCreateSOPInstanceUID=EUC_default, E_PlanarConfiguration pPlanarConfiguration=EPC_default, OFBool predictor6WorkaroundEnable=OFFalse, OFBool cornellWorkaroundEnable=OFFalse, OFBool pForceSingleFragmentPerFrame=OFFalse, OFBool setPreserveBitsStored=OFFalse)
	registers decoders for all supported JPEG processes.
static void	cleanup ()
	deregisters decoders.

Static Private Attributes
static OFBool	registered
	flag indicating whether the decoders are already registered.
static DJCodecParameter *	cp
	pointer to codec parameter shared by all decoders
static DJDecoderBaseline *	decbas
	pointer to decoder for baseline JPEG
static DJDecoderExtended *	decext
	pointer to decoder for extended JPEG
static DJDecoderSpectralSelection *	decsps
	pointer to decoder for spectral selection JPEG
static DJDecoderProgressive *	decpro
	pointer to decoder for progressive JPEG
static DJDecoderP14SV1 *	decsv1
	pointer to decoder for lossless SV1 JPEG
static DJDecoderLossless *	declol
	pointer to decoder for lossless JPEG

Detailed Description

singleton class that registers decoders for all supported JPEG processes.

Member Function Documentation

cleanup()

void DJDecoderRegistration::cleanup ( )

static

deregisters decoders.

Attention: Must not be called while other threads might still use the registered codecs, e.g. because they are currently decoding DICOM data sets through dcmdata.

registerCodecs()

void DJDecoderRegistration::registerCodecs ( E_DecompressionColorSpaceConversion pDecompressionCSConversion = EDC_photometricInterpretation, E_UIDCreation pCreateSOPInstanceUID = EUC_default, E_PlanarConfiguration pPlanarConfiguration = EPC_default, OFBool predictor6WorkaroundEnable = OFFalse, OFBool cornellWorkaroundEnable = OFFalse, OFBool pForceSingleFragmentPerFrame = OFFalse, OFBool setPreserveBitsStored = OFFalse )

static

registers decoders for all supported JPEG processes.

If already registered, call is ignored unless cleanup() has been performed before.

Parameters

pCreateSOPInstanceUID	flag indicating whether or not a new SOP Instance UID should be assigned upon decompression.
pPlanarConfiguration	flag indicating how planar configuration of color images should be encoded upon decompression.
predictor6WorkaroundEnable	enable workaround for buggy lossless compressed images with overflow in predictor 6 for images with 16 bits/pixel
cornellWorkaroundEnable	enable workaround for buggy Cornell lossless compressed images with Huffman table overflow
pForceSingleFragmentPerFrame	while decompressing a multiframe image, assume one fragment per frame even if the JPEG data for some frame is incomplete
setPreserveBitsStored	preserve BitsStored when decompressing even if inconsistent with J2K bitstream

References EDC_photometricInterpretation, EPC_default, and EUC_default.

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The documentation for this class was generated from the following file:

• dcmjpeg/include/dcmtk/dcmjpeg/djdecode.h