org.icepdf.core.pobjects

Class ImageStream

java.lang.Object

org.icepdf.core.pobjects.Dictionary

org.icepdf.core.pobjects.Stream

org.icepdf.core.pobjects.ImageStream

public class ImageStream
extends Stream

ImageStream contains image data that is contains in an XObject of subtype Image.

Since:

5.0

Field Summary

Fields

Modifier and Type	Field and Description
static Name	BITSPERCOMPONENT_KEY
static Name	BLACKIS1_KEY
static Name	BPC_KEY
protected static java.lang.String[]	CCITTFAX_DECODE_FILTERS
static Name	COLUMNS_KEY
static Name	D_KEY
protected static java.lang.String[]	DCT_DECODE_FILTERS
static Name	DECODE_KEY
static Name	DECODEPARMS_KEY
static Name	DP_KEY
static Name	ENCODEDBYTEALIGN_KEY
protected static java.lang.String[]	JBIG2_DECODE_FILTERS
static Name	JBIG2GLOBALS_KEY
protected static java.lang.String[]	JPX_DECODE_FILTERS
static Name	K_KEY
static Name	MASK_KEY
static Name	ROWS_KEY
static Name	SMASK_KEY
static Name	TYPE_VALUE

Fields inherited from class org.icepdf.core.pobjects.Stream

COLORSPACE_KEY, compressed, CS_KEY, DECODEPARAM_KEY, F_KEY, FILTER_KEY, H_KEY, HEIGHT_KEY, I_KEY, IM_KEY, IMAGEMASK_KEY, INDEXED_KEY, pObjectReference, rawBytes, W_KEY, WIDTH_KEY

Fields inherited from class org.icepdf.core.pobjects.Dictionary

entries, FORM_TYPE_KEY, inited, isDeleted, isNew, LENGTH_KEY, library, SUBTYPE_KEY, TYPE_KEY

Constructor Summary

Constructors

Constructor and Description
ImageStream(Library l, java.util.HashMap h, byte[] rawBytes)
ImageStream(Library l, java.util.HashMap h, SeekableInputConstrainedWrapper streamInputWrapper) Create a new instance of a Stream.

Method Summary

Modifier and Type	Method and Description
static void	forceJaiCcittFax(boolean enable) Used to enable/disable the loading of CCITTFax images using JAI library.
boolean	getBlackIs1(Library library, java.util.HashMap decodeParmsDictionary) If BlackIs1 was not specified, then return null, instead of the default value of false, so we can tell if it was given or not
PColorSpace	getColourSpace()
int	getHeight()
java.awt.image.BufferedImage	getImage(GraphicsState graphicsState, Resources resources) Gets the image object for the given resource.
int	getWidth()
void	init() Initiate the Dictionary.
boolean	isImageMask() Does the image have an ImageMask.
java.lang.String	toString() Return a string description of the object.

Methods inherited from class org.icepdf.core.pobjects.Stream

getDecodedByteArrayInputStream, getDecodedStreamBytes, getDecodedStreamBytes, getFilterNames, getNormalisedFilterNames, getPObjectReference, getRawBytes, isImageSubtype, isRawBytesCompressed, setPObjectReference, setRawBytes

Methods inherited from class org.icepdf.core.pobjects.Dictionary

getEntries, getFloat, getInt, getLibrary, getNumber, getObject, isDeleted, isNew, setDeleted, setNew

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_VALUE

public static final Name TYPE_VALUE

BITSPERCOMPONENT_KEY

public static final Name BITSPERCOMPONENT_KEY

BPC_KEY

public static final Name BPC_KEY

DECODE_KEY

public static final Name DECODE_KEY

D_KEY

public static final Name D_KEY

SMASK_KEY

public static final Name SMASK_KEY

MASK_KEY

public static final Name MASK_KEY

JBIG2GLOBALS_KEY

public static final Name JBIG2GLOBALS_KEY

DECODEPARMS_KEY

public static final Name DECODEPARMS_KEY

DP_KEY

public static final Name DP_KEY

K_KEY

public static final Name K_KEY

ENCODEDBYTEALIGN_KEY

public static final Name ENCODEDBYTEALIGN_KEY

COLUMNS_KEY

public static final Name COLUMNS_KEY

ROWS_KEY

public static final Name ROWS_KEY

BLACKIS1_KEY

public static final Name BLACKIS1_KEY

CCITTFAX_DECODE_FILTERS

protected static final java.lang.String[] CCITTFAX_DECODE_FILTERS

DCT_DECODE_FILTERS

protected static final java.lang.String[] DCT_DECODE_FILTERS

JBIG2_DECODE_FILTERS

protected static final java.lang.String[] JBIG2_DECODE_FILTERS

JPX_DECODE_FILTERS

protected static final java.lang.String[] JPX_DECODE_FILTERS

Constructor Detail

ImageStream

public ImageStream(Library l,
                   java.util.HashMap h,
                   SeekableInputConstrainedWrapper streamInputWrapper)

Create a new instance of a Stream.

Parameters:

l - library containing a hash of all document objects

h - HashMap of parameters specific to the Stream object.

streamInputWrapper - Accessor to stream byte data

ImageStream

public ImageStream(Library l,
                   java.util.HashMap h,
                   byte[] rawBytes)

Method Detail

init

public void init()

Description copied from class: Dictionary

Initiate the Dictionary. Retrieve any needed attributes.

Overrides:

init in class Dictionary

getWidth

public int getWidth()

getHeight

public int getHeight()

getImage

public java.awt.image.BufferedImage getImage(GraphicsState graphicsState,
                                             Resources resources)

Gets the image object for the given resource. This method can optionally scale an image to reduce the total memory foot print or to increase the perceived render quality on screen at low zoom levels.

Parameters:

graphicsState - graphic state for image or parent form

resources - resources containing image reference

Returns:

new image object

getBlackIs1

public boolean getBlackIs1(Library library,
                           java.util.HashMap decodeParmsDictionary)

If BlackIs1 was not specified, then return null, instead of the default value of false, so we can tell if it was given or not

isImageMask

public boolean isImageMask()

Does the image have an ImageMask.

forceJaiCcittFax

public static void forceJaiCcittFax(boolean enable)

Used to enable/disable the loading of CCITTFax images using JAI library. This method can be used in place of the system property org.icepdf.core.ccittfax.jai .

Parameters:

enable - eanb

getColourSpace

public PColorSpace getColourSpace()

toString

public java.lang.String toString()

Return a string description of the object. Primarily used for debugging.

Overrides:

toString in class Stream

Returns:

dictionary values.