Package org.loboevolution.pdfview

Class PdfSubByteSampleModel

java.lang.Object

java.awt.image.SampleModel

org.loboevolution.pdfview.PdfSubByteSampleModel

public class PdfSubByteSampleModel
extends SampleModel

Provides a read-only sample-model where components are less than a byte in width while allowing for pixels to cross byte-boundaries. For example, this allows 2 pixels made of 3 4-bit-bands (p[pixel,band]) to be stored in 3 bytes as p[0,1] p[0,2] | p[0,3] p[1,0] | p[1,1] p[1,2]. MultiPixelPackedSampleModel, which allows for sub-byte components, does not allow for such byte spanning, while the PDF specification does permit it -- hence the existence of this class.

Author Luke Kirby, Pirion Systems

Field Summary

Fields inherited from class java.awt.image.SampleModel

dataType, height, numBands, width

Constructor Summary

Constructors

Constructor	Description
PdfSubByteSampleModel(int w, int h, int numComponents, int bitsPerComponent)	Constructor for PdfSubByteSampleModel.

Method Summary

Modifier and Type	Method	Description
SampleModel	createCompatibleSampleModel(int w, int h)
DataBuffer	createDataBuffer()
SampleModel	createSubsetSampleModel(int[] bands)
Object	getDataElements(int x, int y, Object obj, DataBuffer data)
int	getNumDataElements()
int	getSample(int x, int y, int b, DataBuffer data)
int[]	getSampleSize()
int	getSampleSize(int band)
void	setDataElements(int x, int y, Object obj, DataBuffer data)
void	setSample(int x, int y, int b, int s, DataBuffer data)

Methods inherited from class java.awt.image.SampleModel

getDataElements, getDataType, getHeight, getNumBands, getPixel, getPixel, getPixel, getPixels, getPixels, getPixels, getSampleDouble, getSampleFloat, getSamples, getSamples, getSamples, getTransferType, getWidth, setDataElements, setPixel, setPixel, setPixel, setPixels, setPixels, setPixels, setSample, setSample, setSamples, setSamples, setSamples

Methods inherited from class java.lang.Object

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

Constructor Details

PdfSubByteSampleModel

public PdfSubByteSampleModel(int w,
 int h,
 int numComponents,
 int bitsPerComponent)

Constructor for PdfSubByteSampleModel.

Parameters:

w - a Integer object.

h - a Integer object.

numComponents - a Integer object.

bitsPerComponent - a Integer object.

Method Details

getNumDataElements

public int getNumDataElements()

Specified by:

getNumDataElements in class SampleModel

getDataElements

public Object getDataElements(int x,
 int y,
 Object obj,
 DataBuffer data)

Specified by:

getDataElements in class SampleModel

setDataElements

public void setDataElements(int x,
 int y,
 Object obj,
 DataBuffer data)

Specified by:

setDataElements in class SampleModel

getSample

public int getSample(int x,
 int y,
 int b,
 DataBuffer data)

Specified by:

getSample in class SampleModel

setSample

public void setSample(int x,
 int y,
 int b,
 int s,
 DataBuffer data)

Specified by:

setSample in class SampleModel

createCompatibleSampleModel

public SampleModel createCompatibleSampleModel(int w,
 int h)

Specified by:

createCompatibleSampleModel in class SampleModel

createSubsetSampleModel

public SampleModel createSubsetSampleModel(int[] bands)

Specified by:

createSubsetSampleModel in class SampleModel

createDataBuffer

public DataBuffer createDataBuffer()

Specified by:

createDataBuffer in class SampleModel

getSampleSize

public int[] getSampleSize()

Specified by:

getSampleSize in class SampleModel

getSampleSize

public int getSampleSize(int band)

Specified by:

getSampleSize in class SampleModel