DJEncoderRegistration Class Reference

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

List of all members.

Static Public Member Functions

static void registerCodecs (E_CompressionColorSpaceConversion pCompressionCSConversion=ECC_lossyYCbCr, E_UIDCreation pCreateSOPInstanceUID=EUC_default, OFBool pVerbose=OFFalse, OFBool pOptimizeHuffman=OFFalse, int pSmoothingFactor=0, int pForcedBitDepth=0, Uint32 pFragmentSize=0, OFBool pCreateOffsetTable=OFTrue, E_SubSampling pSampleFactors=ESS_444, OFBool pWriteYBR422=OFFalse, OFBool pConvertToSC=OFFalse, unsigned long pWindowType=0, unsigned long pWindowParameter=0, double pVoiCenter=0.0, double pVoiWidth=0.0, unsigned long pRoiLeft=0, unsigned long pRoiTop=0, unsigned long pRoiWidth=0, unsigned long pRoiHeight=0, OFBool pUsePixelValues=OFTrue, OFBool pUseModalityRescale=OFFalse, OFBool pAcceptWrongPaletteTags=OFFalse, OFBool pAcrNemaCompatibility=OFFalse, OFBool pRealLossless=OFFalse)
 registers encoders for all supported JPEG processes.
static void cleanup ()
 deregisters encoders.

Static Private Attributes

static OFBool registered
 flag indicating whether the encoders are already registered.
static DJCodecParameter * cp
 pointer to codec parameter shared by all encoders
static DJEncoderBaseline * encbas
 pointer to encoder for baseline JPEG
static DJEncoderExtended * encext
 pointer to encoder for extended JPEG
static DJEncoderSpectralSelection * encsps
 pointer to encoder for spectral selection JPEG
static DJEncoderProgressive * encpro
 pointer to encoder for progressive JPEG
static DJEncoderP14SV1 * encsv1
 pointer to encoder for lossless SV1 JPEG
static DJEncoderLossless * enclol
 pointer to encoder for lossless JPEG

Detailed Description

singleton class that registers encoders for all supported JPEG processes.

Definition at line 52 of file djencode.h.

Member Function Documentation

static void DJEncoderRegistration::cleanup (   )  [static]
 

deregisters encoders.

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

static void DJEncoderRegistration::registerCodecs (  E_CompressionColorSpaceConversion  pCompressionCSConversion = ECC_lossyYCbCr,
E_UIDCreation  pCreateSOPInstanceUID = EUC_default,
OFBool  pVerbose = OFFalse,
OFBool  pOptimizeHuffman = OFFalse,
int  pSmoothingFactor = 0,
int  pForcedBitDepth = 0,
Uint32  pFragmentSize = 0,
OFBool  pCreateOffsetTable = OFTrue,
E_SubSampling  pSampleFactors = ESS_444,
OFBool  pWriteYBR422 = OFFalse,
OFBool  pConvertToSC = OFFalse,
unsigned long  pWindowType = 0,
unsigned long  pWindowParameter = 0,
double  pVoiCenter = 0.0,
double  pVoiWidth = 0.0,
unsigned long  pRoiLeft = 0,
unsigned long  pRoiTop = 0,
unsigned long  pRoiWidth = 0,
unsigned long  pRoiHeight = 0,
OFBool  pUsePixelValues = OFTrue,
OFBool  pUseModalityRescale = OFFalse,
OFBool  pAcceptWrongPaletteTags = OFFalse,
OFBool  pAcrNemaCompatibility = OFFalse,
OFBool  pRealLossless = OFFalse
)  [static]
 

registers encoders for all supported JPEG processes.

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

Parameters:
pCompressionCSConversion color conversion mode for compression
pCreateSOPInstanceUID mode for SOP Instance UID creation
pVerbose verbose mode flag
pOptimizeHuffman perform huffman table optimization for 8 bits/pixel compression?
pSmoothingFactor smoothing factor for image compression, 0..100
pForcedBitDepth forced bit depth for image compression, 0 (auto) or 8/12/16
pFragmentSize maximum fragment size (in kbytes) for compression, 0 for unlimited.
pCreateOffsetTable create offset table during image compression?
pSampleFactors subsampling mode for color image compression
pWriteYBR422 flag indicating whether a compressed YBR color stream should be marked as YBR_FULL or YBR_FULL_422 on DICOM level
pConvertToSC flag indicating whether image should be converted to Secondary Capture upon compression
pWindowType mode for VOI transformation of monochrome images
pWindowParameter parameter for VOI transform of monochrome images, used in modes 1, 2, 4, 6
pVoiCenter VOI window center for mode 5
pVoiWidth VOI window width for mode 5
pRoiLeft Region of Interest left corner for for VOI transform of monochrome images, mode 7
pRoiTop Region of Interest upper corner for for VOI transform of monochrome images, mode 7
pRoiWidth Region of Interest width for for VOI transform of monochrome images, mode 7
pRoiHeight Region of Interest height for for VOI transform of monochrome images, mode 7
pUsePixelValues Check smallest and largest pixel value and optimize compression, mode 0 only
pUseModalityRescale Create Rescale Slope/Intercept to scale back to original pixel range, mode 0 only
pAcceptWrongPaletteTags Accept wrong palette attribute tags (only "pseudo lossless" encoder)
pAcrNemaCompatibility Accept old ACR-NEMA images without photometric interpretation (only "pseudo lossless" encoder)
pRealLossless Enables true lossless compression (replaces old "pseudo" lossless encoders)

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

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