com.lowagie.text.pdf.codec
Class TiffImage

java.lang.Object
  com.lowagie.text.pdf.codec.TiffImage

public class TiffImage
extends Object

Reads TIFF images

Author:

Paulo Soares (psoares@consiste.pt)

Constructor Summary

TiffImage()

Method Summary

static void	decodePackbits(byte[] data, byte[] dst)
(package private) static long[]	getArrayLongShort(TIFFDirectory dir, int tag)
(package private) static int	getDpi(TIFFField fd, int resolutionUnit)
static int	getNumberOfPages(RandomAccessFileOrArray s) Gets the number of pages the TIFF document has.
static Image	getTiffImage(RandomAccessFileOrArray s, int page) Reads a page from a TIFF image.
static Image	getTiffImage(RandomAccessFileOrArray s, int page, boolean direct) Reads a page from a TIFF image.
protected static Image	getTiffImageColor(TIFFDirectory dir, RandomAccessFileOrArray s)
static void	inflate(byte[] deflated, byte[] inflated)

Methods inherited from class java.lang.Object

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

Constructor Detail

TiffImage

public TiffImage()

Method Detail

getNumberOfPages

public static int getNumberOfPages(RandomAccessFileOrArray s)

Gets the number of pages the TIFF document has.

Parameters:

s - the file source

Returns:

the number of pages

getDpi

static int getDpi(TIFFField fd,
                  int resolutionUnit)

getTiffImage

public static Image getTiffImage(RandomAccessFileOrArray s,
                                 int page)

Reads a page from a TIFF image. Direct mode is not used.

Parameters:

s - the file source

page - the page to get. The first page is 1

Returns:

the Image

getTiffImage

public static Image getTiffImage(RandomAccessFileOrArray s,
                                 int page,
                                 boolean direct)

Reads a page from a TIFF image.

Parameters:

s - the file source

page - the page to get. The first page is 1

direct - for single strip, CCITT images, generate the image by direct byte copying. It's faster but may not work every time

Returns:

the Image

getTiffImageColor

protected static Image getTiffImageColor(TIFFDirectory dir,
                                         RandomAccessFileOrArray s)

getArrayLongShort

static long[] getArrayLongShort(TIFFDirectory dir,
                                int tag)

decodePackbits

public static void decodePackbits(byte[] data,
                                  byte[] dst)

inflate

public static void inflate(byte[] deflated,
                           byte[] inflated)