gdcm::JPEGCodec Class Reference

JPEG codec Class to do JPEG (8bits, 12bits, 16bits lossy & lossless). It redispatch in between the different codec implementation: gdcm::JPEG8Codec, gdcm::JPEG12Codec & gdcm::JPEG16Codec It also support inconsistency in between DICOM header and JPEG compressed stream ImageCodec implementation for the JPEG case. More...

#include <gdcmJPEGCodec.h>

Inheritance diagram for gdcm::JPEGCodec:

Collaboration diagram for gdcm::JPEGCodec:

List of all members.

Public Member Functions
	JPEGCodec ()
	~JPEGCodec ()
bool	CanCode (TransferSyntax const &ts) const
	Return whether this coder support this transfer syntax (can code it)
bool	CanDecode (TransferSyntax const &ts) const
	Return whether this decoder support this transfer syntax (can decode it)
bool	Code (DataElement const &in, DataElement &out)
	Compress into JPEG.
void	ComputeOffsetTable (bool b)
	Compute the offset table:
bool	Decode (DataElement const &is, DataElement &os)
	Decode.
virtual bool	GetHeaderInfo (std::istream &is, TransferSyntax &ts)
bool	GetLossless () const
double	GetQuality () const
void	SetLossless (bool l)
void	SetPixelFormat (PixelFormat const &pf)
void	SetQuality (double q)
Protected Member Functions
bool	DecodeByStreams (std::istream &is, std::ostream &os)
bool	DecodeExtent (char *buffer, unsigned int xmin, unsigned int xmax, unsigned int ymin, unsigned int ymax, unsigned int zmin, unsigned int zmax, std::istream &is)
virtual bool	IsStateSuspension () const
bool	IsValid (PhotometricInterpretation const &pi)
void	SetBitSample (int bit)
Protected Attributes
int	BitSample
bool	Lossless
int	Quality
Friends
class	ImageRegionReader

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Detailed Description

JPEG codec Class to do JPEG (8bits, 12bits, 16bits lossy & lossless). It redispatch in between the different codec implementation: gdcm::JPEG8Codec, gdcm::JPEG12Codec & gdcm::JPEG16Codec It also support inconsistency in between DICOM header and JPEG compressed stream ImageCodec implementation for the JPEG case.

Note:

Things you should know if you ever want to dive into DICOM/JPEG world (among other):

• http://groups.google.com/group/comp.protocols.dicom/browse_thread/thread/625e46919f2080e1
• http://groups.google.com/group/comp.protocols.dicom/browse_thread/thread/75fdfccc65a6243
• http://groups.google.com/group/comp.protocols.dicom/browse_thread/thread/2d525ef6a2f093ed
• http://groups.google.com/group/comp.protocols.dicom/browse_thread/thread/6b93af410f8c921f

Examples:

GetJPEGSamplePrecision.cxx.

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Constructor & Destructor Documentation

gdcm::JPEGCodec::JPEGCodec

(

)

gdcm::JPEGCodec::~JPEGCodec

(

)

---

Member Function Documentation

bool gdcm::JPEGCodec::CanCode

(

TransferSyntax const &

)

const [virtual]

Return whether this coder support this transfer syntax (can code it)

Reimplemented from gdcm::ImageCodec.

bool gdcm::JPEGCodec::CanDecode

(

TransferSyntax const &

)

const [virtual]

Return whether this decoder support this transfer syntax (can decode it)

Reimplemented from gdcm::ImageCodec.

bool gdcm::JPEGCodec::Code	(	DataElement const &	in,
		DataElement &	out
	)		[virtual]

Compress into JPEG.

Reimplemented from gdcm::Coder.

void gdcm::JPEGCodec::ComputeOffsetTable

(

bool

b

)

Compute the offset table:

bool gdcm::JPEGCodec::Decode	(	DataElement const &	,
		DataElement &
	)		[virtual]

Decode.

Reimplemented from gdcm::ImageCodec.

bool gdcm::JPEGCodec::DecodeByStreams	(	std::istream &	is,
		std::ostream &	os
	)		[protected, virtual]

Reimplemented from gdcm::ImageCodec.

Reimplemented in gdcm::JPEG12Codec, gdcm::JPEG16Codec, and gdcm::JPEG8Codec.

bool gdcm::JPEGCodec::DecodeExtent	(	char *	buffer,
		unsigned int	xmin,
		unsigned int	xmax,
		unsigned int	ymin,
		unsigned int	ymax,
		unsigned int	zmin,
		unsigned int	zmax,
		std::istream &	is
	)		[protected]

virtual bool gdcm::JPEGCodec::GetHeaderInfo	(	std::istream &	is,
		TransferSyntax &	ts
	)		[virtual]

Reimplemented from gdcm::ImageCodec.

Reimplemented in gdcm::JPEG12Codec, gdcm::JPEG16Codec, and gdcm::JPEG8Codec.

Examples:

GetJPEGSamplePrecision.cxx.

bool gdcm::JPEGCodec::GetLossless

(

)

const

double gdcm::JPEGCodec::GetQuality

(

)

const

virtual bool gdcm::JPEGCodec::IsStateSuspension

(

)

const [protected, virtual]

Reimplemented in gdcm::JPEG12Codec, gdcm::JPEG16Codec, and gdcm::JPEG8Codec.

bool gdcm::JPEGCodec::IsValid

(

PhotometricInterpretation const &

pi

)

[protected, virtual]

Reimplemented from gdcm::ImageCodec.

void gdcm::JPEGCodec::SetBitSample

(

int

bit

)

[protected]

void gdcm::JPEGCodec::SetLossless

(

bool

l

)

void gdcm::JPEGCodec::SetPixelFormat

(

PixelFormat const &

pf

)

[virtual]

Reimplemented from gdcm::ImageCodec.

Examples:

GetJPEGSamplePrecision.cxx.

void gdcm::JPEGCodec::SetQuality

(

double

q

)

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Friends And Related Function Documentation

friend class ImageRegionReader [friend]

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Member Data Documentation

int gdcm::JPEGCodec::BitSample [protected]

bool gdcm::JPEGCodec::Lossless [protected]

int gdcm::JPEGCodec::Quality [protected]

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

• gdcmJPEGCodec.h