Package com.twelvemonkeys.imageio.plugins.pnm

Class PNMImageReader

java.lang.Object

javax.imageio.ImageReader

com.twelvemonkeys.imageio.ImageReaderBase

com.twelvemonkeys.imageio.plugins.pnm.PNMImageReader

public final class PNMImageReader
extends ImageReaderBase

Field Summary

Fields

Modifier and Type	Field	Description
private PNMHeader	header

Fields inherited from class com.twelvemonkeys.imageio.ImageReaderBase

imageInput

Fields inherited from class javax.imageio.ImageReader

availableLocales, ignoreMetadata, input, locale, minIndex, originatingProvider, progressListeners, seekForwardOnly, updateListeners, warningListeners, warningLocales

Constructor Summary

Constructors

Constructor	Description
PNMImageReader(javax.imageio.spi.ImageReaderSpi provider)

Method Summary

Modifier and Type	Method	Description
(package private) static java.lang.String	asASCII(short type)
private java.awt.image.Raster	clipRowToRect(java.awt.image.Raster raster, java.awt.Rectangle rect, int[] bands, int xSub)
private java.awt.image.WritableRaster	clipToRect(java.awt.image.WritableRaster raster, java.awt.Rectangle rect, int[] bands)
private int[]	createBandOffsets(int numBands)
int	getHeight(int imageIndex)
javax.imageio.metadata.IIOMetadata	getImageMetadata(int imageIndex)	Default implementation that always returns null.
java.util.Iterator<javax.imageio.ImageTypeSpecifier>	getImageTypes(int imageIndex)
javax.imageio.ImageTypeSpecifier	getRawImageType(int imageIndex)
int	getWidth(int imageIndex)
static void	main(java.lang.String[] args)
private void	normalize(byte[] rowData, int start, int length)
private void	normalize(float[] rowData)
private void	normalize(short[] rowData)
java.awt.image.BufferedImage	read(int imageIndex, javax.imageio.ImageReadParam param)
private static void	readFully(java.io.DataInput input, float[] floats)
private static void	readFully(java.io.DataInput input, short[] shorts)
private void	readHeader()
private void	readRowByte(java.awt.image.WritableRaster destRaster, java.awt.image.Raster rowRaster, byte[] rowDataByte, int bitsPerSample, int samplesPerPixel, java.io.DataInput input, int y, java.awt.Rectangle srcRegion, int xSub, int ySub)
private void	readRowFloat(java.awt.image.WritableRaster destRaster, java.awt.image.Raster rowRaster, float[] rowDataFloat, int samplesPerPixel, java.io.DataInput input, int y, java.awt.Rectangle srcRegion, int xSub, int ySub)
private void	readRowUShort(java.awt.image.WritableRaster destRaster, java.awt.image.Raster rowRaster, short[] rowDataUShort, int samplesPerPixel, java.io.DataInput input, int y, java.awt.Rectangle srcRegion, int xSub, int ySub)
protected void	resetMembers()	Resets all member variables.
private java.io.DataInput	wrapInput()

Methods inherited from class com.twelvemonkeys.imageio.ImageReaderBase

assertInput, checkBounds, dispose, fakeAOI, fakeSubsampling, getDestination, getNumImages, getStreamMetadata, hasExplicitDestination, reset, setInput, showIt

Methods inherited from class javax.imageio.ImageReader

abort, abortRequested, addIIOReadProgressListener, addIIOReadUpdateListener, addIIOReadWarningListener, canReadRaster, checkReadParamBandSettings, clearAbortRequest, computeRegions, getAspectRatio, getAvailableLocales, getDefaultReadParam, getFormatName, getImageMetadata, getInput, getLocale, getMinIndex, getNumThumbnails, getOriginatingProvider, getSourceRegion, getStreamMetadata, getThumbnailHeight, getThumbnailWidth, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileWidth, hasThumbnails, isIgnoringMetadata, isImageTiled, isRandomAccessEasy, isSeekForwardOnly, processImageComplete, processImageProgress, processImageStarted, processImageUpdate, processPassComplete, processPassStarted, processReadAborted, processSequenceComplete, processSequenceStarted, processThumbnailComplete, processThumbnailPassComplete, processThumbnailPassStarted, processThumbnailProgress, processThumbnailStarted, processThumbnailUpdate, processWarningOccurred, processWarningOccurred, read, readAll, readAll, readAsRenderedImage, readerSupportsThumbnails, readRaster, readThumbnail, readTile, readTileRaster, removeAllIIOReadProgressListeners, removeAllIIOReadUpdateListeners, removeAllIIOReadWarningListeners, removeIIOReadProgressListener, removeIIOReadUpdateListener, removeIIOReadWarningListener, setInput, setInput, setLocale

Methods inherited from class java.lang.Object

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

Field Detail

header

private PNMHeader header

Constructor Detail

PNMImageReader

PNMImageReader(javax.imageio.spi.ImageReaderSpi provider)

Method Detail

resetMembers

protected void resetMembers()

Description copied from class: ImageReaderBase

Resets all member variables. This method is by default invoked from:

• ImageReaderBase.setInput(Object, boolean, boolean)
• ImageReaderBase.dispose()
• ImageReaderBase.reset()

Specified by:

resetMembers in class ImageReaderBase

readHeader

private void readHeader()
                 throws java.io.IOException

Throws:

java.io.IOException

asASCII

static java.lang.String asASCII(short type)

getWidth

public int getWidth(int imageIndex)
             throws java.io.IOException

Specified by:

getWidth in class javax.imageio.ImageReader

Throws:

java.io.IOException

getHeight

public int getHeight(int imageIndex)
              throws java.io.IOException

Specified by:

getHeight in class javax.imageio.ImageReader

Throws:

java.io.IOException

getRawImageType

public javax.imageio.ImageTypeSpecifier getRawImageType(int imageIndex)
                                                 throws java.io.IOException

Overrides:

getRawImageType in class javax.imageio.ImageReader

Throws:

java.io.IOException

createBandOffsets

private int[] createBandOffsets(int numBands)

getImageTypes

public java.util.Iterator<javax.imageio.ImageTypeSpecifier> getImageTypes(int imageIndex)
                                                                   throws java.io.IOException

Specified by:

getImageTypes in class javax.imageio.ImageReader

Throws:

java.io.IOException

read

public java.awt.image.BufferedImage read(int imageIndex,
                                         javax.imageio.ImageReadParam param)
                                  throws java.io.IOException

Specified by:

read in class javax.imageio.ImageReader

Throws:

java.io.IOException

wrapInput

private java.io.DataInput wrapInput()
                             throws javax.imageio.IIOException

Throws:

javax.imageio.IIOException

clipRowToRect

private java.awt.image.Raster clipRowToRect(java.awt.image.Raster raster,
                                            java.awt.Rectangle rect,
                                            int[] bands,
                                            int xSub)

clipToRect

private java.awt.image.WritableRaster clipToRect(java.awt.image.WritableRaster raster,
                                                 java.awt.Rectangle rect,
                                                 int[] bands)

readRowByte

private void readRowByte(java.awt.image.WritableRaster destRaster,
                         java.awt.image.Raster rowRaster,
                         byte[] rowDataByte,
                         int bitsPerSample,
                         int samplesPerPixel,
                         java.io.DataInput input,
                         int y,
                         java.awt.Rectangle srcRegion,
                         int xSub,
                         int ySub)
                  throws java.io.IOException

Throws:

java.io.IOException

readRowUShort

private void readRowUShort(java.awt.image.WritableRaster destRaster,
                           java.awt.image.Raster rowRaster,
                           short[] rowDataUShort,
                           int samplesPerPixel,
                           java.io.DataInput input,
                           int y,
                           java.awt.Rectangle srcRegion,
                           int xSub,
                           int ySub)
                    throws java.io.IOException

Throws:

java.io.IOException

readRowFloat

private void readRowFloat(java.awt.image.WritableRaster destRaster,
                          java.awt.image.Raster rowRaster,
                          float[] rowDataFloat,
                          int samplesPerPixel,
                          java.io.DataInput input,
                          int y,
                          java.awt.Rectangle srcRegion,
                          int xSub,
                          int ySub)
                   throws java.io.IOException

Throws:

java.io.IOException

readFully

private static void readFully(java.io.DataInput input,
                              short[] shorts)
                       throws java.io.IOException

Throws:

java.io.IOException

readFully

private static void readFully(java.io.DataInput input,
                              float[] floats)
                       throws java.io.IOException

Throws:

java.io.IOException

normalize

private void normalize(byte[] rowData,
                       int start,
                       int length)

normalize

private void normalize(short[] rowData)

normalize

private void normalize(float[] rowData)

getImageMetadata

public javax.imageio.metadata.IIOMetadata getImageMetadata(int imageIndex)
                                                    throws java.io.IOException

Description copied from class: ImageReaderBase

Default implementation that always returns null.

Overrides:

getImageMetadata in class ImageReaderBase

Parameters:

imageIndex - ignored, unless overridden

Returns:

null, unless overridden

Throws:

java.io.IOException - never, unless overridden.

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Throws:

java.io.IOException