loci.formats.in

Class NiftiReader

java.lang.Object

loci.formats.FormatHandler

loci.formats.FormatReader

loci.formats.in.NiftiReader

All Implemented Interfaces:

Closeable, AutoCloseable, IFormatHandler, IFormatReader, IMetadataConfigurable

public class NiftiReader
extends FormatReader

NiftiReader is the file format reader for NIfTI files.

Author:

Melissa Linkert melissa at glencoesoftware.com

Field Summary

Fields

Modifier and Type	Field and Description
private double	deltaT
private String	description
private short	nDimensions
private RandomAccessInputStream	pixelFile File containing the pixel data.
private int	pixelOffset Offset to the pixel data in the .img file.
private String	pixelsFilename
private double	sliceThickness
private static int	UNITS_METER Code for meters.
private static int	UNITS_MM Code for millimeters.
private static int	UNITS_MSEC Code for milliseconds.
private static int	UNITS_USEC Code for microseconds.
private double	voxelHeight
private double	voxelWidth

Fields inherited from class loci.formats.FormatReader

core, coreIndex, datasetDescription, domains, filterMetadata, flattenedResolutions, group, hasCompanionFiles, in, indexedAsRGB, metadata, metadataStore, normalizeData, resolution, saveOriginalMetadata, series, suffixNecessary, suffixSufficient, THUMBNAIL_DIMENSION

Fields inherited from class loci.formats.FormatHandler

COMPRESSION_SUFFIXES, currentId, format, LOGGER, metadataOptions, suffixes

Fields inherited from interface loci.formats.IFormatReader

CAN_GROUP, CANNOT_GROUP, MUST_GROUP

Constructor Summary

Constructors

Constructor and Description
NiftiReader() Constructs a new NIfTI reader.

Method Summary

Methods

Modifier and Type	Method and Description
void	close(boolean fileOnly) Closes the currently open file.
int	fileGroupOption(String id) Returns an int indicating that we cannot, must, or might group the files in a given dataset.
String[]	getDomains() Returns the list of domains represented by the current file.
String[]	getSeriesUsedFiles(boolean noPixels) Returns an array of filenames needed to open the current series.
protected void	initFile(String id) Initializes the given file (parsing header information, etc.).
boolean	isSingleFile(String id) Returns true if this is a single-file format.
boolean	isThisType(RandomAccessInputStream stream) Checks if the given stream is a valid stream for this file format.
boolean	isThisType(String name, boolean open) Checks if a file matches the type of this format reader.
byte[]	openBytes(int no, byte[] buf, int x, int y, int w, int h) Obtains a sub-image of the specified image plane into a pre-allocated byte array.
private void	populateExtendedMetadata()
private void	populatePixelType(int dataType)
void	reopenFile() Reopen any files that were closed, and which are expected to be open while the reader is open.

Methods inherited from class loci.formats.FormatReader

addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMeta, addGlobalMetaList, addMeta, addMetaList, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMeta, addSeriesMetaList, close, coreIndexToSeries, flattenHashtables, get16BitLookupTable, get8BitLookupTable, getAcquisitionMode, getAdvancedSeriesUsedFiles, getAdvancedUsedFiles, getArcType, getBinning, getBitsPerPixel, getCompression, getContrastMethod, getCoreIndex, getCoreMetadataList, getCorrection, getCurrentFile, getDatasetStructureDescription, getDetectorType, getDimensionOrder, getDimensionOrder, getEffectiveSizeC, getExperimentType, getFilamentType, getFillRule, getFilterType, getFontFamily, getFontStyle, getGlobalMeta, getGlobalMetadata, getIlluminationType, getImageCount, getImmersion, getIndex, getIndex, getLaserMedium, getLaserType, getMarker, getMedium, getMetadataStore, getMetadataStoreRoot, getMetadataValue, getMicrobeamManipulationType, getMicroscopeType, getModuloC, getModuloT, getModuloZ, getNamingConvention, getOptimalTileHeight, getOptimalTileWidth, getPixelType, getPixelType, getPossibleDomains, getPulse, getRequiredDirectories, getResolution, getResolutionCount, getRGBChannelCount, getRotationTransform, getSeries, getSeriesCount, getSeriesMeta, getSeriesMetadata, getSeriesMetadataValue, getSeriesUsedFiles, getSizeC, getSizeT, getSizeX, getSizeY, getSizeZ, getThumbSizeX, getThumbSizeY, getUnderlyingReaders, getUsedFiles, getUsedFiles, getZCTCoords, getZCTModuloCoords, hasCompanionFiles, hasFlattenedResolutions, isFalseColor, isGroupFiles, isIndexed, isInterleaved, isInterleaved, isLittleEndian, isMetadataComplete, isMetadataFiltered, isNormalized, isOrderCertain, isOriginalMetadataPopulated, isRGB, isThisType, isThisType, isThumbnailSeries, isUsedFile, makeFilterMetadata, openBytes, openBytes, openBytes, openPlane, openThumbBytes, readPlane, readPlane, seriesToCoreIndex, setCoreIndex, setFlattenedResolutions, setGroupFiles, setId, setMetadataFiltered, setMetadataStore, setNormalized, setOriginalMetadataPopulated, setResolution, setSeries

Methods inherited from class loci.formats.FormatHandler

checkSuffix, checkSuffix, getFormat, getMetadataOptions, getNativeDataType, getSuffixes, getSupportedMetadataLevels, setMetadataOptions

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface loci.formats.IFormatHandler

getFormat, getNativeDataType, getSuffixes

Methods inherited from interface loci.formats.IMetadataConfigurable

getMetadataOptions, getSupportedMetadataLevels, setMetadataOptions

Field Detail

UNITS_METER

private static final int UNITS_METER

Code for meters.

See Also:

Constant Field Values

UNITS_MM

private static final int UNITS_MM

Code for millimeters.

See Also:

Constant Field Values

UNITS_MSEC

private static final int UNITS_MSEC

Code for milliseconds.

See Also:

Constant Field Values

UNITS_USEC

private static final int UNITS_USEC

Code for microseconds.

See Also:

Constant Field Values

pixelOffset

private int pixelOffset

Offset to the pixel data in the .img file.

pixelFile

private transient RandomAccessInputStream pixelFile

File containing the pixel data.

pixelsFilename

private String pixelsFilename

nDimensions

private short nDimensions

description

private String description

voxelWidth

private double voxelWidth

voxelHeight

private double voxelHeight

sliceThickness

private double sliceThickness

deltaT

private double deltaT

Constructor Detail

NiftiReader

public NiftiReader()

Constructs a new NIfTI reader.

Method Detail

isSingleFile

public boolean isSingleFile(String id)
                     throws FormatException,
                            IOException

Description copied from interface: IFormatReader

Returns true if this is a single-file format.

Specified by:

isSingleFile in interface IFormatReader

Overrides:

isSingleFile in class FormatReader

Throws:

FormatException

IOException

isThisType

public boolean isThisType(String name,
                 boolean open)

Description copied from class: FormatReader

Checks if a file matches the type of this format reader. Checks filename suffixes against those known for this format. If the suffix check is inconclusive and the open parameter is true, the file is opened and tested with FormatReader.isThisType(RandomAccessInputStream).

Specified by:

isThisType in interface IFormatReader

Overrides:

isThisType in class FormatReader

open - If true, and the file extension is insufficient to determine the file type, the (existing) file is opened for further analysis.

isThisType

public boolean isThisType(RandomAccessInputStream stream)
                   throws IOException

Description copied from interface: IFormatReader

Checks if the given stream is a valid stream for this file format.

Specified by:

isThisType in interface IFormatReader

Overrides:

isThisType in class FormatReader

Throws:

IOException

getDomains

public String[] getDomains()

Description copied from interface: IFormatReader

Returns the list of domains represented by the current file.

Specified by:

getDomains in interface IFormatReader

Overrides:

getDomains in class FormatReader

openBytes

public byte[] openBytes(int no,
               byte[] buf,
               int x,
               int y,
               int w,
               int h)
                 throws FormatException,
                        IOException

Description copied from interface: IFormatReader

Obtains a sub-image of the specified image plane into a pre-allocated byte array.

Specified by:

openBytes in interface IFormatReader

Specified by:

openBytes in class FormatReader

Parameters:

no - the image index within the file.

buf - a pre-allocated buffer.

x - X coordinate of the upper-left corner of the sub-image

y - Y coordinate of the upper-left corner of the sub-image

w - width of the sub-image

h - height of the sub-image

Returns:

the pre-allocated buffer buf for convenience.

Throws:

FormatException - if there was a problem parsing the metadata of the file.

IOException - if there was a problem reading the file.

See Also:

IFormatReader.openBytes(int, byte[], int, int, int, int)

getSeriesUsedFiles

public String[] getSeriesUsedFiles(boolean noPixels)

Description copied from interface: IFormatReader

Returns an array of filenames needed to open the current series. If the 'noPixels' flag is set, then only files that do not contain pixel data will be returned.

Specified by:

getSeriesUsedFiles in interface IFormatReader

Overrides:

getSeriesUsedFiles in class FormatReader

fileGroupOption

public int fileGroupOption(String id)
                    throws FormatException,
                           IOException

Description copied from interface: IFormatReader

Returns an int indicating that we cannot, must, or might group the files in a given dataset.

Specified by:

fileGroupOption in interface IFormatReader

Overrides:

fileGroupOption in class FormatReader

Throws:

FormatException

IOException

close

public void close(boolean fileOnly)
           throws IOException

Description copied from interface: IFormatReader

Closes the currently open file. If the flag is set, this is all that happens; if unset, it is equivalent to calling Closeable.close().

Specified by:

close in interface IFormatReader

Overrides:

close in class FormatReader

Throws:

IOException

reopenFile

public void reopenFile()
                throws IOException

Description copied from interface: IFormatReader

Reopen any files that were closed, and which are expected to be open while the reader is open. This assumes that IFormatHandler.setId(java.lang.String) has been called, but close(false) has not been called.

Specified by:

reopenFile in interface IFormatReader

Overrides:

reopenFile in class FormatReader

Throws:

IOException

initFile

protected void initFile(String id)
                 throws FormatException,
                        IOException

Description copied from class: FormatReader

Initializes the given file (parsing header information, etc.). Most subclasses should override this method to perform initialization operations such as parsing metadata.

Overrides:

initFile in class FormatReader

Throws:

FormatException - if a parsing error occurs processing the file.

IOException - if an I/O error occurs processing the file

populatePixelType

private void populatePixelType(int dataType)
                        throws FormatException

Throws:

FormatException

populateExtendedMetadata

private void populateExtendedMetadata()
                               throws IOException

Throws:

IOException