loci.formats
Class TiffTools

java.lang.Object
  loci.formats.TiffTools

public abstract class TiffTools

extends Object

A utility class for manipulating TIFF files.

Field Summary

static int	ARTIST
static int	ASCII
static int	BIG
static int	BITS_PER_SAMPLE
static int	BLACK_IS_ZERO
static int	BYTE
static int	CCITT_1D
static int	CELL_LENGTH
static int	CELL_WIDTH
static int	CIE_LAB
static int	CMYK
static int	COLOR_MAP
static int	COMPRESSION
static int	COPYRIGHT
static int	DATE_TIME
static boolean	DEBUG
static int	DEFLATE
static int	DOCUMENT_NAME
static int	DOT_RANGE
static int	DOUBLE
static int	EXTRA_SAMPLES
static int	FILL_ORDER
static int	FLOAT
static int	FREE_BYTE_COUNTS
static int	FREE_OFFSETS
static int	GRAY_RESPONSE_CURVE
static int	GRAY_RESPONSE_UNIT
static int	GROUP_3_FAX
static int	GROUP_4_FAX
static int	HALFTONE_HINTS
static int	HOST_COMPUTER
static int	IMAGE_DESCRIPTION
static int	IMAGE_LENGTH
static int	IMAGE_WIDTH
static int	INK_NAMES
static int	INK_SET
static int	JPEG
static int	JPEG_AC_TABLES
static int	JPEG_DC_TABLES
static int	JPEG_INTERCHANGE_FORMAT
static int	JPEG_INTERCHANGE_FORMAT_LENGTH
static int	JPEG_LOSSLESS_PREDICTORS
static int	JPEG_POINT_TRANSFORMS
static int	JPEG_PROC
static int	JPEG_Q_TABLES
static int	JPEG_RESTART_INTERVAL
static int	LITTLE
static int	LITTLE_ENDIAN
static int	LONG
static int	LZW
static int	MAGIC_NUMBER
static int	MAKE
static int	MAX_SAMPLE_VALUE
static int	MIN_SAMPLE_VALUE
static int	MODEL
static int	NEW_SUBFILE_TYPE
static int	NUMBER_OF_INKS
static int	ORIENTATION
static int	PACK_BITS
static int	PAGE_NAME
static int	PAGE_NUMBER
static int	PHOTOMETRIC_INTERPRETATION
static int	PLANAR_CONFIGURATION
static int	PREDICTOR
static int	PRIMARY_CHROMATICITIES
static int	PROPRIETARY_DEFLATE
static int	RATIONAL
static int	REFERENCE_BLACK_WHITE
static int	RESOLUTION_UNIT
static int	RGB
static int	RGB_PALETTE
static int	ROWS_PER_STRIP
static int	S_MAX_SAMPLE_VALUE
static int	S_MIN_SAMPLE_VALUE
static int	SAMPLE_FORMAT
static int	SAMPLES_PER_PIXEL
static int	SBYTE
static int	SHORT
static int	SLONG
static int	SOFTWARE
static int	SRATIONAL
static int	SSHORT
static int	STRIP_BYTE_COUNTS
static int	STRIP_OFFSETS
static int	SUBFILE_TYPE
static int	T4_OPTIONS
static int	T6_OPTIONS
static int	TARGET_PRINTER
static int	THRESHHOLDING
static int	THUNDERSCAN
static int	TILE_BYTE_COUNTS
static int	TILE_LENGTH
static int	TILE_OFFSETS
static int	TILE_WIDTH
static int	TRANSFER_FUNCTION
static int	TRANSFER_RANGE
static int	TRANSPARENCY_MASK
static int	UNCOMPRESSED
static int	UNDEFINED
static int	WHITE_IS_ZERO
static int	WHITE_POINT
static int	X_POSITION
static int	X_RESOLUTION
static int	Y_CB_CR
static int	Y_CB_CR_COEFFICIENTS
static int	Y_CB_CR_POSITIONING
static int	Y_CB_CR_SUB_SAMPLING
static int	Y_POSITION
static int	Y_RESOLUTION

Constructor Summary

TiffTools()

Method Summary

static byte[]	compress(byte[] input, int compression) Encodes a strip of data with the given compression scheme.
static void	debug(String message) Prints a debugging message with current time.
static void	difference(byte[] input, int[] bitsPerSample, long width, int planarConfig, int predictor) Performs in-place differencing according to the given predictor value.
static int[]	getIFDIntArray(Hashtable ifd, int tag, boolean checkNull) Gets the given directory entry values in int format from the specified IFD, performing some error checking.
static int	getIFDIntValue(Hashtable ifd, int tag) Gets the given directory entry value in int format from the specified IFD, or -1 if the given directory does not exist.
static int	getIFDIntValue(Hashtable ifd, int tag, boolean checkNull, int defaultValue) Gets the given directory entry value in int format from the specified IFD, performing some error checking.
static long[]	getIFDLongArray(Hashtable ifd, int tag, boolean checkNull) Gets the given directory entry values in long format from the specified IFD, performing some error checking.
static long	getIFDLongValue(Hashtable ifd, int tag, boolean checkNull, long defaultValue) Gets the given directory entry value in long format from the specified IFD, performing some error checking.
static TiffRational	getIFDRationalValue(Hashtable ifd, int tag, boolean checkNull) Gets the given directory entry value in rational format from the specified IFD, performing some error checking.
static Hashtable[]	getIFDs(RandomAccessFile in) Gets all IFDs within the given TIFF file, or null if the given file is not a valid TIFF file.
static Hashtable[]	getIFDs(RandomAccessFile in, int globalOffset) Gets all IFDs within the given TIFF file, or null if the given file is not a valid TIFF file.
static short[]	getIFDShortArray(Hashtable ifd, int tag, boolean checkNull) Gets the given directory entry values in short format from the specified IFD, performing some error checking.
static String	getIFDTagName(int tag) Gets the name of the IFD tag encoded by the given number.
static Object	getIFDValue(Hashtable ifd, int tag) Gets the given directory entry value from the specified IFD.
static Object	getIFDValue(Hashtable ifd, int tag, boolean checkNull, Class checkClass) Gets the given directory entry value from the specified IFD, performing some error checking.
static BufferedImage	getImage(Hashtable ifd, RandomAccessFile in) Reads the image defined in the given IFD from the specified file.
static BufferedImage	getImage(Hashtable ifd, RandomAccessFile in, int globalOffset) Reads the image defined in the given IFD from the specified file.
static boolean	isLittleEndian(Hashtable ifd) Gets whether the TIFF information in the given IFD is little endian.
static boolean	isValidHeader(byte[] block) Tests the given data block to see if it represents the first few bytes of a TIFF file.
static void	planarUnpack(short[][] samples, int startIndex, byte[] bytes, int[] bitsPerSample, int photoInterp, boolean littleEndian, int strip, int numStrips) Extracts pixel information from the given byte array according to the bits per sample, photometric interpretation, and the specified byte ordering.
static void	putIFDValue(Hashtable ifd, int tag, int value) Adds a directory entry of type SHORT to an IFD.
static void	putIFDValue(Hashtable ifd, int tag, long value) Adds a directory entry of type LONG to an IFD.
static void	putIFDValue(Hashtable ifd, int tag, Object value) Adds a directory entry to an IFD.
static void	putIFDValue(Hashtable ifd, int tag, short value) Adds a directory entry of type BYTE to an IFD.
static byte[]	uncompress(byte[] input, int compression) Decodes a strip of data compressed with the given compression scheme.
static void	undifference(byte[] input, int[] bitsPerSample, long width, int planarConfig, int predictor) Undoes in-place differencing according to the given predictor value.
static void	unpackBytes(short[][] samples, int startIndex, byte[] bytes, int[] bitsPerSample, int photoInterp, int[] colorMap, boolean littleEndian, long maxValue, int planar, int strip, int numStrips) Extracts pixel information from the given byte array according to the bits per sample, photometric interpretation and color map IFD directory entry values, and the specified byte ordering.
static long	writeImage(Image image, Hashtable ifd, OutputStream out, int offset, boolean last) Writes the given field to the specified output stream using the given byte offset and IFD, in big-endian format.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

public static final boolean DEBUG

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Constant Field Values

LITTLE_ENDIAN

public static final int LITTLE_ENDIAN

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NEW_SUBFILE_TYPE

public static final int NEW_SUBFILE_TYPE

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SUBFILE_TYPE

public static final int SUBFILE_TYPE

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IMAGE_WIDTH

public static final int IMAGE_WIDTH

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IMAGE_LENGTH

public static final int IMAGE_LENGTH

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BITS_PER_SAMPLE

public static final int BITS_PER_SAMPLE

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COMPRESSION

public static final int COMPRESSION

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PHOTOMETRIC_INTERPRETATION

public static final int PHOTOMETRIC_INTERPRETATION

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THRESHHOLDING

public static final int THRESHHOLDING

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CELL_WIDTH

public static final int CELL_WIDTH

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CELL_LENGTH

public static final int CELL_LENGTH

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FILL_ORDER

public static final int FILL_ORDER

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DOCUMENT_NAME

public static final int DOCUMENT_NAME

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IMAGE_DESCRIPTION

public static final int IMAGE_DESCRIPTION

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MAKE

public static final int MAKE

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MODEL

public static final int MODEL

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STRIP_OFFSETS

public static final int STRIP_OFFSETS

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ORIENTATION

public static final int ORIENTATION

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SAMPLES_PER_PIXEL

public static final int SAMPLES_PER_PIXEL

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ROWS_PER_STRIP

public static final int ROWS_PER_STRIP

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STRIP_BYTE_COUNTS

public static final int STRIP_BYTE_COUNTS

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MIN_SAMPLE_VALUE

public static final int MIN_SAMPLE_VALUE

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MAX_SAMPLE_VALUE

public static final int MAX_SAMPLE_VALUE

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X_RESOLUTION

public static final int X_RESOLUTION

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Y_RESOLUTION

public static final int Y_RESOLUTION

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PLANAR_CONFIGURATION

public static final int PLANAR_CONFIGURATION

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PAGE_NAME

public static final int PAGE_NAME

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X_POSITION

public static final int X_POSITION

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Y_POSITION

public static final int Y_POSITION

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FREE_OFFSETS

public static final int FREE_OFFSETS

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FREE_BYTE_COUNTS

public static final int FREE_BYTE_COUNTS

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GRAY_RESPONSE_UNIT

public static final int GRAY_RESPONSE_UNIT

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GRAY_RESPONSE_CURVE

public static final int GRAY_RESPONSE_CURVE

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T4_OPTIONS

public static final int T4_OPTIONS

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T6_OPTIONS

public static final int T6_OPTIONS

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RESOLUTION_UNIT

public static final int RESOLUTION_UNIT

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PAGE_NUMBER

public static final int PAGE_NUMBER

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TRANSFER_FUNCTION

public static final int TRANSFER_FUNCTION

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SOFTWARE

public static final int SOFTWARE

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DATE_TIME

public static final int DATE_TIME

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ARTIST

public static final int ARTIST

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HOST_COMPUTER

public static final int HOST_COMPUTER

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PREDICTOR

public static final int PREDICTOR

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WHITE_POINT

public static final int WHITE_POINT

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PRIMARY_CHROMATICITIES

public static final int PRIMARY_CHROMATICITIES

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COLOR_MAP

public static final int COLOR_MAP

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HALFTONE_HINTS

public static final int HALFTONE_HINTS

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TILE_WIDTH

public static final int TILE_WIDTH

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TILE_LENGTH

public static final int TILE_LENGTH

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TILE_OFFSETS

public static final int TILE_OFFSETS

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TILE_BYTE_COUNTS

public static final int TILE_BYTE_COUNTS

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INK_SET

public static final int INK_SET

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INK_NAMES

public static final int INK_NAMES

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NUMBER_OF_INKS

public static final int NUMBER_OF_INKS

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DOT_RANGE

public static final int DOT_RANGE

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TARGET_PRINTER

public static final int TARGET_PRINTER

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EXTRA_SAMPLES

public static final int EXTRA_SAMPLES

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SAMPLE_FORMAT

public static final int SAMPLE_FORMAT

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S_MIN_SAMPLE_VALUE

public static final int S_MIN_SAMPLE_VALUE

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S_MAX_SAMPLE_VALUE

public static final int S_MAX_SAMPLE_VALUE

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TRANSFER_RANGE

public static final int TRANSFER_RANGE

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JPEG_PROC

public static final int JPEG_PROC

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JPEG_INTERCHANGE_FORMAT

public static final int JPEG_INTERCHANGE_FORMAT

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JPEG_INTERCHANGE_FORMAT_LENGTH

public static final int JPEG_INTERCHANGE_FORMAT_LENGTH

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JPEG_RESTART_INTERVAL

public static final int JPEG_RESTART_INTERVAL

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JPEG_LOSSLESS_PREDICTORS

public static final int JPEG_LOSSLESS_PREDICTORS

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JPEG_POINT_TRANSFORMS

public static final int JPEG_POINT_TRANSFORMS

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JPEG_Q_TABLES

public static final int JPEG_Q_TABLES

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JPEG_DC_TABLES

public static final int JPEG_DC_TABLES

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JPEG_AC_TABLES

public static final int JPEG_AC_TABLES

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Y_CB_CR_COEFFICIENTS

public static final int Y_CB_CR_COEFFICIENTS

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Y_CB_CR_SUB_SAMPLING

public static final int Y_CB_CR_SUB_SAMPLING

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Y_CB_CR_POSITIONING

public static final int Y_CB_CR_POSITIONING

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REFERENCE_BLACK_WHITE

public static final int REFERENCE_BLACK_WHITE

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COPYRIGHT

public static final int COPYRIGHT

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UNCOMPRESSED

public static final int UNCOMPRESSED

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CCITT_1D

public static final int CCITT_1D

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GROUP_3_FAX

public static final int GROUP_3_FAX

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GROUP_4_FAX

public static final int GROUP_4_FAX

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LZW

public static final int LZW

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JPEG

public static final int JPEG

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PACK_BITS

public static final int PACK_BITS

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PROPRIETARY_DEFLATE

public static final int PROPRIETARY_DEFLATE

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DEFLATE

public static final int DEFLATE

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THUNDERSCAN

public static final int THUNDERSCAN

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WHITE_IS_ZERO

public static final int WHITE_IS_ZERO

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BLACK_IS_ZERO

public static final int BLACK_IS_ZERO

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RGB

public static final int RGB

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RGB_PALETTE

public static final int RGB_PALETTE

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TRANSPARENCY_MASK

public static final int TRANSPARENCY_MASK

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CMYK

public static final int CMYK

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Y_CB_CR

public static final int Y_CB_CR

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CIE_LAB

public static final int CIE_LAB

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BYTE

public static final int BYTE

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ASCII

public static final int ASCII

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SHORT

public static final int SHORT

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LONG

public static final int LONG

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RATIONAL

public static final int RATIONAL

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SBYTE

public static final int SBYTE

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UNDEFINED

public static final int UNDEFINED

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SSHORT

public static final int SSHORT

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SLONG

public static final int SLONG

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SRATIONAL

public static final int SRATIONAL

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FLOAT

public static final int FLOAT

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DOUBLE

public static final int DOUBLE

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MAGIC_NUMBER

public static final int MAGIC_NUMBER

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LITTLE

public static final int LITTLE

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BIG

public static final int BIG

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Constructor Detail

TiffTools

public TiffTools()

Method Detail

isValidHeader

public static boolean isValidHeader(byte[] block)

Tests the given data block to see if it represents the first few bytes of a TIFF file.

isLittleEndian

public static boolean isLittleEndian(Hashtable ifd)
                              throws FormatException

Gets whether the TIFF information in the given IFD is little endian.

Throws:

FormatException

getIFDs

public static Hashtable[] getIFDs(RandomAccessFile in)
                           throws IOException

Gets all IFDs within the given TIFF file, or null if the given file is not a valid TIFF file.

Throws:

IOException

getIFDs

public static Hashtable[] getIFDs(RandomAccessFile in,
                                  int globalOffset)
                           throws IOException

Gets all IFDs within the given TIFF file, or null if the given file is not a valid TIFF file.

Throws:

IOException

getIFDTagName

public static String getIFDTagName(int tag)

Gets the name of the IFD tag encoded by the given number.

getIFDValue

public static Object getIFDValue(Hashtable ifd,
                                 int tag)

Gets the given directory entry value from the specified IFD.

getIFDValue

public static Object getIFDValue(Hashtable ifd,
                                 int tag,
                                 boolean checkNull,
                                 Class checkClass)
                          throws FormatException

Gets the given directory entry value from the specified IFD, performing some error checking.

Throws:

FormatException

getIFDLongValue

public static long getIFDLongValue(Hashtable ifd,
                                   int tag,
                                   boolean checkNull,
                                   long defaultValue)
                            throws FormatException

Gets the given directory entry value in long format from the specified IFD, performing some error checking.

Throws:

FormatException

getIFDIntValue

public static int getIFDIntValue(Hashtable ifd,
                                 int tag)

Gets the given directory entry value in int format from the specified IFD, or -1 if the given directory does not exist.

getIFDIntValue

public static int getIFDIntValue(Hashtable ifd,
                                 int tag,
                                 boolean checkNull,
                                 int defaultValue)
                          throws FormatException

Gets the given directory entry value in int format from the specified IFD, performing some error checking.

Throws:

FormatException

getIFDRationalValue

public static TiffRational getIFDRationalValue(Hashtable ifd,
                                               int tag,
                                               boolean checkNull)
                                        throws FormatException

Gets the given directory entry value in rational format from the specified IFD, performing some error checking.

Throws:

FormatException

getIFDLongArray

public static long[] getIFDLongArray(Hashtable ifd,
                                     int tag,
                                     boolean checkNull)
                              throws FormatException

Gets the given directory entry values in long format from the specified IFD, performing some error checking.

Throws:

FormatException

getIFDIntArray

public static int[] getIFDIntArray(Hashtable ifd,
                                   int tag,
                                   boolean checkNull)
                            throws FormatException

Gets the given directory entry values in int format from the specified IFD, performing some error checking.

Throws:

FormatException

getIFDShortArray

public static short[] getIFDShortArray(Hashtable ifd,
                                       int tag,
                                       boolean checkNull)
                                throws FormatException

Gets the given directory entry values in short format from the specified IFD, performing some error checking.

Throws:

FormatException

getImage

public static BufferedImage getImage(Hashtable ifd,
                                     RandomAccessFile in)
                              throws FormatException,
                                     IOException

Reads the image defined in the given IFD from the specified file.

Throws:

FormatException

IOException

getImage

public static BufferedImage getImage(Hashtable ifd,
                                     RandomAccessFile in,
                                     int globalOffset)
                              throws FormatException,
                                     IOException

Reads the image defined in the given IFD from the specified file.

Throws:

FormatException

IOException

planarUnpack

public static void planarUnpack(short[][] samples,
                                int startIndex,
                                byte[] bytes,
                                int[] bitsPerSample,
                                int photoInterp,
                                boolean littleEndian,
                                int strip,
                                int numStrips)
                         throws FormatException

Extracts pixel information from the given byte array according to the bits per sample, photometric interpretation, and the specified byte ordering. No error checking is performed. This method is tailored specifically for planar (separated) images.

Throws:

FormatException

unpackBytes

public static void unpackBytes(short[][] samples,
                               int startIndex,
                               byte[] bytes,
                               int[] bitsPerSample,
                               int photoInterp,
                               int[] colorMap,
                               boolean littleEndian,
                               long maxValue,
                               int planar,
                               int strip,
                               int numStrips)
                        throws FormatException

Extracts pixel information from the given byte array according to the bits per sample, photometric interpretation and color map IFD directory entry values, and the specified byte ordering. No error checking is performed.

Throws:

FormatException

uncompress

public static byte[] uncompress(byte[] input,
                                int compression)
                         throws FormatException,
                                IOException

Decodes a strip of data compressed with the given compression scheme.

Throws:

FormatException

IOException

undifference

public static void undifference(byte[] input,
                                int[] bitsPerSample,
                                long width,
                                int planarConfig,
                                int predictor)
                         throws FormatException

Undoes in-place differencing according to the given predictor value.

Throws:

FormatException

putIFDValue

public static void putIFDValue(Hashtable ifd,
                               int tag,
                               Object value)

Adds a directory entry to an IFD.

putIFDValue

public static void putIFDValue(Hashtable ifd,
                               int tag,
                               short value)

Adds a directory entry of type BYTE to an IFD.

putIFDValue

public static void putIFDValue(Hashtable ifd,
                               int tag,
                               int value)

Adds a directory entry of type SHORT to an IFD.

putIFDValue

public static void putIFDValue(Hashtable ifd,
                               int tag,
                               long value)

Adds a directory entry of type LONG to an IFD.

writeImage

public static long writeImage(Image image,
                              Hashtable ifd,
                              OutputStream out,
                              int offset,
                              boolean last)
                       throws FormatException,
                              IOException

Writes the given field to the specified output stream using the given byte offset and IFD, in big-endian format.

Parameters:

image - The field to write

ifd - Hashtable representing the TIFF IFD; can be null

out - The output stream to which the TIFF data should be written

offset - The value to use for specifying byte offsets

last - Whether this image is the final IFD entry of the TIFF data

Returns:

total number of bytes written

Throws:

FormatException

IOException

compress

public static byte[] compress(byte[] input,
                              int compression)
                       throws FormatException,
                              IOException

Encodes a strip of data with the given compression scheme.

Throws:

FormatException

IOException

difference

public static void difference(byte[] input,
                              int[] bitsPerSample,
                              long width,
                              int planarConfig,
                              int predictor)
                       throws FormatException

Performs in-place differencing according to the given predictor value.

Throws:

FormatException

debug

public static void debug(String message)

Prints a debugging message with current time.