Enumerations
enum	{ NumLosslessTransferSyntaxes = 8 }
	Number of supported lossless compression transfer syntax modes. More...

Functions
MLDICOMCachedIO_EXPORT void	pushMessageCollecting ()
	Takes current message handles of DCMTree library and uses redirectStream() to push current handler and message states on a stack and sets up own handlers to collect all messages from that handler and from std::cerr stream; needs to be restored with popMessageCollecting();.

MLDICOMCachedIO_EXPORT void	popMessageCollecting (DicomMessageCollector &dcmMsgCollector, const std::string &callersMessage, size_t outStrMaxSize=std::string::npos, bool addClampInfo=true)
	Restores states which must have been saved before with pushMessageCollecting() and sends collected (and possibly processed) messages to dcmMsgCollector for further processing.

MLDICOMCachedIO_EXPORT void	redirectStream (std::ostream &outputStream, std::streambuf &tempBuf, std::stringbuf &stringBuffer)
	Redirect outputs to outputStream into the temporary buffer tmpBuf.

MLDICOMCachedIO_EXPORT std::string	unRedirectStream (std::ostream &outputStream, std::streambuf &tmpBuf, std::stringbuf &stringBuffer, size_t outStrMaxSize=std::string::npos, bool addClampInfo=true)
	Undo the redirected output of outputStream into the temporary buffer tmpBuf.

MLDICOMCachedIO_EXPORT void	makeWarningsWarningsAndErrorsErrors (std::string &messageString)
	Some messages for example from DCMTree(_OFFIS) are not marked with "error" or "warnings" and cannot be filtered correctly therefore in DicomMessageFilters.

MLDICOMCachedIO_EXPORT DCMTree::TreePtr	getDirectDCMTree (const std::string &fName, DicomMessageCollector &dcmMsgCollector, bool loadPixelData=false)
	Tries to open a file directly by reading it with the DCMTree interfaces and returns a non constant TreePtr pointer on success or a nullptr TreePtr on failure.

MLDICOMCachedIO_EXPORT DCMTree::TransferSyntax	getLosslessStorageTransferSyntax (DCMTree::Const_TreePtr dcmTree)
	If dcmTree has a TransferSyntaxUID tag matching one form LosslessTransferSyntaxUIDs then the corresponding DCMTree::TransferSyntax is returned, otherwise DCMTree::EXPLICIT_LITTLE_ENDIAN is returned.

MLDICOMCachedIO_EXPORT DCMTree::Const_TagPtr	getPrivateTag (const std::string &privateCreatorString, unsigned short groupId, DCMTree::RawTagId lowerEightBitOfElementId, DCMTree::Const_TreePtr dcmTree)
	If a private creator tag with value privateCreatorString in a private slot with groupId and a tag with element id lowerEightBitOfElementId is found then the private tag is returned; in all other cases nullptr is returned.

MLDICOMCachedIO_EXPORT bool	isPhilips3D (DCMTree::Const_TreePtr dcmTree, MLint *spatialExtent=nullptr)
	Looks for Philips3D format and if there is an extra spatial extent then it is returned in spatialExtent (if non-nullptr) and true is returned, in all other cases false is returned and spatialExtent is unchanged.

MLDICOMCachedIO_EXPORT unsigned int	getNumberOfFrames (DCMTree::Const_TreePtr dcmTree, unsigned int *fromTagOnly=nullptr)
	Returns the number of real frames in the data set from Number of Frames tag if possible including a possible private extensions such as Philips 3D; if the number of frames cannot be determined for any reason then 0 is returned; if fromTagOnly is not nullptr then the value of the Number Of Frames tag is returned or 0 if not possible.

MLDICOMCachedIO_EXPORT DCMTree::PixelData	getPixelDataPtrFromTree (DCMTree::Const_TreePtr treePtr, size_t *valSizeInBytes, DicomMessageCollector &dcmMsgCollector)
	Returns the pointer to the pixel data tag value.

MLDICOMCachedIO_EXPORT void	removeAssociatedCacheEntries (const DICOMCachedIOFileHandle &fileHandle)
	Flush all cached entries related to the given file handle.

MLDICOMCachedIO_EXPORT void	clearDICOMCaches ()
	Clears all cached DICOM date including tags, trees, pixel frames and decomposed multi-frame trees.

Variables
MLDICOMCachedIO_EXPORT const char *const	LosslessTransferSyntaxUIDs [NumLosslessTransferSyntaxes]
	Supported lossless compression transfer syntax UIDs.

MLDICOMCachedIO_EXPORT const char *const	LosslessTransferSyntaxNames [NumLosslessTransferSyntaxes]
	Supported lossless compression transfer syntax names.

MLDICOMCachedIO_EXPORT DCMTree::TransferSyntax	LosslessTransferSyntaxCodes [NumLosslessTransferSyntaxes]
	DCMTree::TransferSyntax enums for supported lossless compression transfer syntax.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Number of supported lossless compression transfer syntax modes.

Enumerator
NumLosslessTransferSyntaxes

Definition at line 115 of file mlDICOMCachedIOTools.h.

Function Documentation

◆ clearDICOMCaches()

MLDICOMCachedIO_EXPORT void ml::DICOMCachedIOTools::clearDICOMCaches ( )

Clears all cached DICOM date including tags, trees, pixel frames and decomposed multi-frame trees.

References clearDICOMCaches().

Referenced by clearDICOMCaches().

◆ getDirectDCMTree()

MLDICOMCachedIO_EXPORT DCMTree::TreePtr ml::DICOMCachedIOTools::getDirectDCMTree	(	const std::string &	fName,
		DicomMessageCollector &	dcmMsgCollector,
		bool	loadPixelData = false )

Tries to open a file directly by reading it with the DCMTree interfaces and returns a non constant TreePtr pointer on success or a nullptr TreePtr on failure.

In contrast to the DICOMCachedIOTreeCache interfaces this tree is not cached. issues is set to the amount of fatal and non fatal issues. Note that there also may be non fatal messages in issues while a non nullptr tree is returned. This function is not thread-safe and not reentrant.

Parameters

fName	File name from which the DCMTree is to be read.
dcmMsgCollector	Collects error, info and issue messages (typically related to a handle).
loadPixelData	If false (the default) then do not load pixel data, (usually for performance reasons), otherwise load it.

Returns: a non constant TreePtr pointer on success or a nullptr TreePtr on failure.

References getDirectDCMTree().

Referenced by getDirectDCMTree().

◆ getLosslessStorageTransferSyntax()

MLDICOMCachedIO_EXPORT DCMTree::TransferSyntax ml::DICOMCachedIOTools::getLosslessStorageTransferSyntax ( DCMTree::Const_TreePtr dcmTree )

If dcmTree has a TransferSyntaxUID tag matching one form LosslessTransferSyntaxUIDs then the corresponding DCMTree::TransferSyntax is returned, otherwise DCMTree::EXPLICIT_LITTLE_ENDIAN is returned.

References getLosslessStorageTransferSyntax().

Referenced by getLosslessStorageTransferSyntax().

◆ getNumberOfFrames()

MLDICOMCachedIO_EXPORT unsigned int ml::DICOMCachedIOTools::getNumberOfFrames	(	DCMTree::Const_TreePtr	dcmTree,
		unsigned int *	fromTagOnly = nullptr )

Returns the number of real frames in the data set from Number of Frames tag if possible including a possible private extensions such as Philips 3D; if the number of frames cannot be determined for any reason then 0 is returned; if fromTagOnly is not nullptr then the value of the Number Of Frames tag is returned or 0 if not possible.

References getNumberOfFrames().

Referenced by getNumberOfFrames().

◆ getPixelDataPtrFromTree()

MLDICOMCachedIO_EXPORT DCMTree::PixelData ml::DICOMCachedIOTools::getPixelDataPtrFromTree	(	DCMTree::Const_TreePtr	treePtr,
		size_t *	valSizeInBytes,
		DicomMessageCollector &	dcmMsgCollector )

Returns the pointer to the pixel data tag value.

If data is not found then nullptr is returned. This function does not handle multi-frame pixel tags, nullptr is returned in that case, however, the expected size of pixel data is returned anyway if valSizeInBytes if provided non-nullptr. Only top level tags with ids DCMTree_PixelData, DCMTree_FloatPixelData, and DCMTree_DoubleFloatPixelData are checked.

Parameters

treePtr	The DicomTree from whose pixelDataTag the pixelData shall be read.
valSizeInBytes	If valSizeInBytes is non nullptr then *valSizeInBytes is set to the size of the pixel data chunk in bytes, otherwise it is ignored.
dcmMsgCollector	Collects error, info and issue messages (typically related to a handle).

References getPixelDataPtrFromTree().

Referenced by getPixelDataPtrFromTree().

◆ getPrivateTag()

MLDICOMCachedIO_EXPORT DCMTree::Const_TagPtr ml::DICOMCachedIOTools::getPrivateTag	(	const std::string &	privateCreatorString,
		unsigned short	groupId,
		DCMTree::RawTagId	lowerEightBitOfElementId,
		DCMTree::Const_TreePtr	dcmTree )

If a private creator tag with value privateCreatorString in a private slot with groupId and a tag with element id lowerEightBitOfElementId is found then the private tag is returned; in all other cases nullptr is returned.

References getPrivateTag().

Referenced by getPrivateTag().

◆ isPhilips3D()

MLDICOMCachedIO_EXPORT bool ml::DICOMCachedIOTools::isPhilips3D	(	DCMTree::Const_TreePtr	dcmTree,
		MLint *	spatialExtent = nullptr )

Looks for Philips3D format and if there is an extra spatial extent then it is returned in spatialExtent (if non-nullptr) and true is returned, in all other cases false is returned and spatialExtent is unchanged.

References isPhilips3D().

Referenced by isPhilips3D().

◆ makeWarningsWarningsAndErrorsErrors()

MLDICOMCachedIO_EXPORT void ml::DICOMCachedIOTools::makeWarningsWarningsAndErrorsErrors ( std::string & messageString )

Some messages for example from DCMTree(_OFFIS) are not marked with "error" or "warnings" and cannot be filtered correctly therefore in DicomMessageFilters.

Those ones we know we mark appropriately here by inserting "warning" or "error" at the correct places.

References makeWarningsWarningsAndErrorsErrors().

Referenced by makeWarningsWarningsAndErrorsErrors().

◆ popMessageCollecting()

MLDICOMCachedIO_EXPORT void ml::DICOMCachedIOTools::popMessageCollecting	(	DicomMessageCollector &	dcmMsgCollector,
		const std::string &	callersMessage,
		size_t	outStrMaxSize = std::string::npos,
		bool	addClampInfo = true )

Restores states which must have been saved before with pushMessageCollecting() and sends collected (and possibly processed) messages to dcmMsgCollector for further processing.

callersIssueDescription may contain additional information about the caller, its position etc for enhance message understanding.

Parameters

dcmMsgCollector	The message collector into which the received messages are forwarded.
callersMessage	The message added before the messages forwarded to the dcmMsgCollector.
outStrMaxSize	Passed unchanged to the internally used unRedirectStream.
addClampInfo	Passed unchanged to the internally used unRedirectStream.

References popMessageCollecting().

Referenced by popMessageCollecting().

◆ pushMessageCollecting()

MLDICOMCachedIO_EXPORT void ml::DICOMCachedIOTools::pushMessageCollecting ( )

Takes current message handles of DCMTree library and uses redirectStream() to push current handler and message states on a stack and sets up own handlers to collect all messages from that handler and from std::cerr stream; needs to be restored with popMessageCollecting();.

References pushMessageCollecting().

Referenced by pushMessageCollecting().

◆ redirectStream()

MLDICOMCachedIO_EXPORT void ml::DICOMCachedIOTools::redirectStream	(	std::ostream &	outputStream,
		std::streambuf *&	tempBuf,
		std::stringbuf *&	stringBuffer )

Redirect outputs to outputStream into the temporary buffer tmpBuf.

Parameters

outputStream	The stream which to be redirected until unRedirectStream is called.
tempBuf	The buffer used to store the streambuf used outputStream, must be passed unchanged to unredirectStream later. Previous content will be overwritten.
stringBuffer	The buffer used to collect the stream outputs between the call to redirectStream and unRedirectStream, must be passed unchanged to unredirectStream later. Previous content will be overwritten.

References redirectStream().

Referenced by redirectStream().

◆ removeAssociatedCacheEntries()

MLDICOMCachedIO_EXPORT void ml::DICOMCachedIOTools::removeAssociatedCacheEntries ( const DICOMCachedIOFileHandle & fileHandle )

Flush all cached entries related to the given file handle.

References removeAssociatedCacheEntries().

Referenced by removeAssociatedCacheEntries().

◆ unRedirectStream()

MLDICOMCachedIO_EXPORT std::string ml::DICOMCachedIOTools::unRedirectStream	(	std::ostream &	outputStream,
		std::streambuf *&	tmpBuf,
		std::stringbuf *&	stringBuffer,
		size_t	outStrMaxSize = std::string::npos,
		bool	addClampInfo = true )

Undo the redirected output of outputStream into the temporary buffer tmpBuf.

Parameters

outputStream	The stream which was redirected with redirectStream.
tmpBuf	The buffer used to store the previous streambuf used by outputStream, must be one passed to redirectStream.
stringBuffer	The buffer used to collect the stream outputs between the call to redirectStream and unRedirectStream.
outStrMaxSize	The size to which the collected information will be clamped.
addClampInfo	If the collected stream information was clamped then an information message will be added to inform the user about the clamping.

Returns: An empty string if nothing was collected between the calls to redirectStream and unRedirectStream and passed parameters were valid. Otherwise a string describing the parameter errors or the composed message of collected and/or clamped message possibly with a clamping information.

References unRedirectStream().

Referenced by unRedirectStream().

Variable Documentation

◆ LosslessTransferSyntaxCodes

MLDICOMCachedIO_EXPORT DCMTree::TransferSyntax ml::DICOMCachedIOTools::LosslessTransferSyntaxCodes[NumLosslessTransferSyntaxes]

extern

DCMTree::TransferSyntax enums for supported lossless compression transfer syntax.

◆ LosslessTransferSyntaxNames

MLDICOMCachedIO_EXPORT const char* const ml::DICOMCachedIOTools::LosslessTransferSyntaxNames[NumLosslessTransferSyntaxes]

extern

Supported lossless compression transfer syntax names.

◆ LosslessTransferSyntaxUIDs

MLDICOMCachedIO_EXPORT const char* const ml::DICOMCachedIOTools::LosslessTransferSyntaxUIDs[NumLosslessTransferSyntaxes]

extern

Supported lossless compression transfer syntax UIDs.

Enumerations

Functions

Variables

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ clearDICOMCaches()

◆ getDirectDCMTree()

◆ getLosslessStorageTransferSyntax()

◆ getNumberOfFrames()

◆ getPixelDataPtrFromTree()

◆ getPrivateTag()

◆ isPhilips3D()

◆ makeWarningsWarningsAndErrorsErrors()

◆ popMessageCollecting()

◆ pushMessageCollecting()

◆ redirectStream()

◆ removeAssociatedCacheEntries()

◆ unRedirectStream()

Variable Documentation

◆ LosslessTransferSyntaxCodes

◆ LosslessTransferSyntaxNames

◆ LosslessTransferSyntaxUIDs