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 ImageReaderBase

imageInput

Fields inherited from class ImageReader

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

Constructor Summary

Constructors

Constructor	Description
PNMImageReader(ImageReaderSpi provider)

Method Summary

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

Methods inherited from class ImageReaderBase

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

Methods inherited from class 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 Object

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

Field Details

header

private PNMHeader header

Constructor Details

PNMImageReader

PNMImageReader(ImageReaderSpi provider)

Method Details

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 IOException

Throws:

IOException

asASCII

static String asASCII(short type)

getWidth

public int getWidth(int imageIndex)
             throws IOException

Specified by:

getWidth in class ImageReader

Throws:

IOException

getHeight

public int getHeight(int imageIndex)
              throws IOException

Specified by:

getHeight in class ImageReader

Throws:

IOException

getRawImageType

public ImageTypeSpecifier getRawImageType(int imageIndex)
                                   throws IOException

Overrides:

getRawImageType in class ImageReader

Throws:

IOException

createBandOffsets

private int[] createBandOffsets(int numBands)

getImageTypes

public Iterator<ImageTypeSpecifier> getImageTypes(int imageIndex)
                                           throws IOException

Specified by:

getImageTypes in class ImageReader

Throws:

IOException

read

public BufferedImage read(int imageIndex,
 ImageReadParam param)
                   throws IOException

Specified by:

read in class ImageReader

Throws:

IOException

wrapInput

private DataInput wrapInput()
                     throws IIOException

Throws:

IIOException

clipRowToRect

private Raster clipRowToRect(Raster raster,
 Rectangle rect,
 int[] bands,
 int xSub)

clipToRect

private WritableRaster clipToRect(WritableRaster raster,
 Rectangle rect,
 int[] bands)

readRowByte

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

Throws:

IOException

readRowUShort

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

Throws:

IOException

readRowFloat

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

Throws:

IOException

readFully

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

Throws:

IOException

readFully

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

Throws:

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 IIOMetadata getImageMetadata(int imageIndex)
                             throws 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:

IOException - never, unless overridden.

main

public static void main(String[] args)
                 throws IOException

Throws:

IOException