ml::ManagedSubImage Class Reference

ManagedSubImage is derived from SubImage and frees its allocated memory automatically when it is destructed. More...

#include <mlManagedSubImage.h>

Inheritance diagram for ml::ManagedSubImage:

Public Member Functions
	ManagedSubImage ()
	Constructor.
ManagedSubImage &	operator= (const SubImage &si)
	Copy operator from SubImage.
	~ManagedSubImage () override
	Destruct the object and freeing the memory.
void *	takeData ()
	Returns the data pointer and set the internal data to NULL (so it passes the ownership of the data to the caller) Note: This should only be used on images that where allocated via MLAlloc or with user provided memory.
Public Member Functions inherited from ml::SubImage
const SubImageBox &	getBox () const
	Returns the box describing the origin/extent of the subimage.
void	setSourceImageExtent (const ImageVector &extent)
	Sets the image extent of the source image that was used to create this SubImage to extent.
ImageVector	getSourceImageExtent () const
	Returns the image extent of the source image that was used to create this SubImage.
SubImageBox	getValidRegion () const
	Returns the valid region of the SubImage, which is defined by the intersection of the SubImage::getBox() and the SubImageBox(ImageVector(0), SubImage::getSourceImageExtent()-1).
MLint	getNumVoxels () const
	Returns number of voxels in (sub)image.
MLint	getSizeInBytes () const
	Returns number of potential bytes in (sub)image.
ImageVector	getStride () const
	Returns a stride vector to address the memory efficiently.
MLint	getOffset (const ImageVector &voxelPosition) const
	Returns the array index offset from the origin (0,0,0,0,0,0) to the voxelPosition.
void	setDataType (MLDataType dataType)
	Override the inherited setDataType method to set type of data to dataType.
MLDataType	getDataType () const
	Returns the type of image data.
const MLTypeInfos *	getDataTypeInfos () const
	Returns MLTypeInfos for image data type.
MLEXPORT ImageProperties	toImageProperties () const
	Converts the Subimage's data type and extend to an ImageProperties object.
MLEXPORT void	setFromImageProperties (const ImageProperties &imageProperties)
	Sets the image box and data type from the imageProperties extent and data type.
void	toStream (std::ostream &ostr) const
	SubImage ()
	Constructor: Creates a subimage with no data.
	SubImage (const SubImage &si)
	Copy constructor to get identical copy.
	SubImage (const SubImageBox &box, MLDataType datatype, void *data=nullptr)
	Constructor for a rectangular 6D image region with position and extent given by box, with data type data type and memory given by the pointer data.
	SubImage (const SubImage &si, const ImageVector &offset)
	Copy constructor to get identical copy.
virtual	~SubImage ()=default
	Virtual destructor to suppress compiler warnings.
SubImage &	operator= (const SubImage &si)
	Assignment operator to get identical copy.
void	setBox (const SubImageBox &subImageBox)
	Sets a rectangular 6D region of the subimage to subImageBox.
void	setBox (const ImageVector &imageExtent)
	Sets a rectangular 6D region of the subimage to imageExtent.
void	translate (const ImageVector &offset)
	Translates the box of the subimage by adding the vector offset.
const ImageVector &	getOrigin () const
	Returns the origin of the subimage, which is identical to getBox().v1.
void	setOrigin (const ImageVector &newOrigin)
	Sets the origin of the subimage, which moves the box of the subimage to newOrigin.
ImageVector	getExtent () const
	Returns the extent of the subimage, which is identical to getBox().getExtent().
void	setExtent (MLint x, MLint y, MLint z=1, MLint c=1, MLint t=1, MLint u=1)
	Sets the extent of the subimage to newExtent.
void	setExtent (const ImageVector &newExtent)
	Sets the extent of the subimage to newExtent. This also changes the strides.
SubImageBox	getBoxFromExtent () const
	Returns the size of image as box with origin 0.
SubImageBox	getBoxFromImageExtent () const
ImageVector	getImageExtent () const
void	setImageExtent (const ImageVector &newExtent)
void *	getSubImagePointer (const ImageVector &voxelPosition) const
	Returns a pointer to voxel data of image voxel at 6D voxelPosition relative to the origin of the subimage region.
void *	getSubImagePointer (MLint x, MLint y, MLint z) const
	Returns a pointer to voxel data of image voxel at 3D position p=(x,y,z) relative to the origin of the subimage region.
void *	getImagePointer (const ImageVector &voxelPosition) const
	Returns a pointer to voxel data of image voxel at 6D position voxelPosition relative to the origin of the complete image region.
void *	getImagePointer (MLint x, MLint y, MLint z) const
	Returns a pointer to voxel data of image voxel at 3D position p=(x, y, z) relative to the origin of the complete image region.
MLEXPORT void	copySubImage (const SubImage &fromImage, const ScaleShiftData &scaleShiftData)
	Copies image data from the subimage fromImage into the overlapping region of this subimage.
MLEXPORT void	copySubImage (const SubImage &fromImage)
	Implements a special case for void copySubImage(const TSubImage<FROM_DATATYPE> &typedFromImg, const ScaleShiftData& scaleShiftData) where scaleShiftData is default.
bool	isValidSubImagePosition (const ImageVector &voxelPosition) const
	Returns true if the 6D voxelPosition is a valid position within the subimage region, i.e., if voxelPosition is within (0,0,0,0,0,0) and subimage extents.
bool	isValidSubImagePosition (MLint x, MLint y, MLint z) const
	Returns true if the 3D position p=(x, y, z) is a valid position within the subimage region, i.e., if the position is within (0,0,0) and subimage extents.
bool	isValidImagePosition (const ImageVector &voxelPosition) const
	Returns true if the 6D voxelPosition is a valid position within the subimage region, i.e., if voxelPosition is within subImgBox.v1 and subImgBox.v2.
bool	isValidImagePosition (MLint x, MLint y, MLint z) const
	Returns true if the 3D position p=(x, y, z) is a valid position within the subimage region, i.e., if the position is within subImgBox.v1 and subImgBox.v2.
MLEXPORT void	allocate (MLMemoryErrorHandling handleFailure)
	Allocates data with MLAlloc().
MLEXPORT void	allocateAsMemoryBlockHandle (MLMemoryErrorHandling handleFailure=ML_RETURN_NULL)
	Allocates data using the ML memory manager. For failure handing, see SubImage::allocate().
MLEXPORT void	free ()
	Frees data pointed to by getData() with MLFree().
MLEXPORT bool	isOneValued () const
	Returns true if all page voxels have the same value or if the page contains only one voxel.
MLEXPORT MLint	calculateMinMax (MLdouble &minValue, MLdouble &maxValue, const SubImageBox *const validBox=nullptr) const
	Scans subimage and determines minimum and maximum values on region, which is part of subimage box and of validBox.
MLEXPORT void	compare (const SubImage &subImage2, bool *regionsMatch, bool *dataTypesMatch, bool *thisBoxIsPartOfRegion2, bool *region2IsPartOfThisBox, bool *overlapHasSameValues, ImageVector *firstMismatchPos) const
	Compares two subimages with respect to their regions and their contents.
MLEXPORT void	fill (MLdouble value)
	Fills the subimage with a value that is cast to the data type of the subimage.
MLEXPORT void	fillWithTypeData (const MLTypeData *value)
	Fills the subimage with a value given as MLTypeData.
MLEXPORT void	fillBordersWithScalarValue (const SubImageBox &box, MLdouble fillValue)
	Fills all regions with the fill value fillValue that are not covered by box.
MLEXPORT void	fillBordersWithTypeData (const SubImageBox &box, const MLTypeData *fillValue)
	Fills all regions with the fill value fillValue which are not covered by box.
MLEXPORT void	fillBordersWithInputValues (const SubImageBox &box, const SubImage &inputSubImage)
	Fills all regions with values from inputSubImage which are not covered by box; however, only valid regions of inputSubImage are read.
MLEXPORT void	fillBordersWithBorderValues (const SubImageBox &box)
	Each voxel that is not inside box is filled with the voxel value of the nearest voxel that is inside box.
void	fillInvalidRegionWithScalarValue (MLdouble value)
	Fills the invalid region (everything outside of getValidRegion()) with the given value.
void	fillInvalidRegionWithTypeData (const MLTypeData *value)
	Fills the invalid region (everything outside of getValidRegion()) with the given value.
void	fillInvalidRegionWithBorderValues ()
	Fills the invalid region.
MLEXPORT bool	isValid () const
	Returns 1 (=true) if image region and data is valid.
void *	getData () const
	Returns the memory address of the memory managed by the subimage.
MLEXPORT void	setData (void *data)
	Sets data as a new memory block for the subimage.
MLEXPORT void	setDataFromMemoryBlockHandle (const MLMemoryBlockHandle &data)
	Sets the managed data from a given MLMemoryBlockHandle, the subimage will store this handle and thus reference count the memory managed by the handle as long as the SubImage stays alive.
const MLMemoryBlockHandle &	getMemoryBlockHandle () const
	Returns the memory block handle that manages the data of this SubImage if it has been set via setDataFromMemoryBlockHandle().

Additional Inherited Members
Static Public Member Functions inherited from ml::SubImage
static MLEXPORT MLint	coordToIndex (MLint x, MLint y, MLint z, MLint c, MLint t, MLint u, const ImageVector &size)
	Converts the coordinate (x, y, z, c, t,u) to an index into an image with 6D extents given by size.
static MLEXPORT MLint	coordToIndex (const ImageVector &voxelPosition, const ImageVector &size)
	Converts the coordinate voxelPosition into the image with extents size to an index.
static MLEXPORT ImageVector	indexToCoord (MLint index, const ImageVector &extent)
	Converts an index into an array with extents extent to a coordinate.
Protected Member Functions inherited from ml::SubImage
void	_calcFillAreaParams (const SubImageBox &box, const SubImageBox &maxValidInputRegion, ImageVector &boxV1, ImageVector &boxV2, ImageVector &outputTSubImageV1, ImageVector &outputTSubImageV2, MLint &fullLineLenX, MLint &fullLineLenXB, MLint &leftLineStartX, MLint &leftLineLenX, MLint &leftLineLenXB, MLint &rightLineStartX, MLint &rightLineLenX, MLint &rightLineLenXB)
	Helper method to calculate important parameters for page based border filling.
void	_copySubImageGeneric (const SubImage &fromImage, const ScaleShiftData &scaleShiftData)
	Generic, non-optimized version of copySubImage.
const MLTypeInfos *	_getDataTypeInfos (MLDataType dt) const
	Returns MLTypeInfos for used datatypes, indicates error if the type dt is not registered.
Protected Attributes inherited from ml::SubImage
SubImageBox	_box
	The box of the subimage.
ImageVector	_sourceImageExtent
	The extent of the source image, which is used for getValidRegion().
void *	_data
	Memory chunk managed by this subimage.
MLMemoryBlockHandle	_memoryBlock
	Memory block used by this subimage.
ImageVector	_stride
	Stride vector to address the memory efficiently.
MLDataType	_dataType
	Data type of the image.

Detailed Description

ManagedSubImage is derived from SubImage and frees its allocated memory automatically when it is destructed.

If you make use of TileRequest::AllocationPolicy == TileRequest::ExternalBuffer, make sure that you call takeData(); otherwise, this class will delete your external buffer in its destructor!

The class is not exported to make inlining possible.

Definition at line 30 of file mlManagedSubImage.h.

Constructor & Destructor Documentation

ManagedSubImage()

ml::ManagedSubImage::ManagedSubImage ( )

inline

Constructor.

Definition at line 35 of file mlManagedSubImage.h.

~ManagedSubImage()

ml::ManagedSubImage::~ManagedSubImage ( )

inlineoverride

Destruct the object and freeing the memory.

Definition at line 44 of file mlManagedSubImage.h.

Member Function Documentation

operator=()

ManagedSubImage & ml::ManagedSubImage::operator= ( const SubImage & si )

inline

Copy operator from SubImage.

Definition at line 38 of file mlManagedSubImage.h.

References mlrange_cast().

takeData()

void * ml::ManagedSubImage::takeData ( )

inline

Returns the data pointer and set the internal data to NULL (so it passes the ownership of the data to the caller) Note: This should only be used on images that where allocated via MLAlloc or with user provided memory.

It will not work correctly on memory allocated by the MemoryManager, as one has to use getMemoryBlockHandle() instead to get the data.

Definition at line 52 of file mlManagedSubImage.h.

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

• MeVis/Foundation/Sources/MLBackgroundTasks/mlManagedSubImage.h