org.dcm4che3.imageio.plugins.rle

Class RLEImageReader

java.lang.Object

javax.imageio.ImageReader

org.dcm4che3.imageio.plugins.rle.RLEImageReader

public class RLEImageReader
extends ImageReader

Author:

Gunter Zeilinger

Field Summary

Fields

Modifier and Type	Field and Description
private byte[]	buf
private int	bufLen
private long	bufOff
private int	bufPos
private int[]	header
private long	headerPos
private int	height
private ImageInputStream	iis
private static Logger	LOG
private static String	MISMATCH_NUM_RLE_SEGMENTS
private static String	UNKNOWN_IMAGE_TYPE
private static String	UNSUPPORTED_DATA_TYPE
private int	width

Fields inherited from class javax.imageio.ImageReader

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

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RLEImageReader(ImageReaderSpi originatingProvider)

Method Summary

Modifier and Type	Method and Description
boolean	canReadRaster()
private void	checkIndex(int imageIndex)
private void	fillBuffer()
private BufferedImage	getDestination(ImageReadParam param)
private WritableRaster	getDestinationRaster(ImageReadParam param)
int	getHeight(int imageIndex)
IIOMetadata	getImageMetadata(int imageIndex)
Iterator<ImageTypeSpecifier>	getImageTypes(int imageIndex)
int	getNumImages(boolean allowSearch)
IIOMetadata	getStreamMetadata()
int	getWidth(int imageIndex)
private byte	nextByte()
private void	read(byte[][] bands)
private void	read(byte[] data, int pos, int len)
private void	read(DataBuffer db)
BufferedImage	read(int imageIndex, ImageReadParam param)
private void	read(short[] data)
private void	read(short[] data, int pos, int len, int shift)
Raster	readRaster(int imageIndex, ImageReadParam param)
private void	readRLEHeader(int numSegments)
private void	resetInternalState()
private void	seekSegment(int seg)
void	setInput(Object input, boolean seekForwardOnly, boolean ignoreMetadata)
private void	unrle(int seg, byte[] data)
private void	unrle(int seg, short[] data)

Methods inherited from class javax.imageio.ImageReader

abort, abortRequested, addIIOReadProgressListener, addIIOReadUpdateListener, addIIOReadWarningListener, checkReadParamBandSettings, clearAbortRequest, computeRegions, dispose, getAspectRatio, getAvailableLocales, getDefaultReadParam, getDestination, getFormatName, getImageMetadata, getInput, getLocale, getMinIndex, getNumThumbnails, getOriginatingProvider, getRawImageType, 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, readThumbnail, readTile, readTileRaster, removeAllIIOReadProgressListeners, removeAllIIOReadUpdateListeners, removeAllIIOReadWarningListeners, removeIIOReadProgressListener, removeIIOReadUpdateListener, removeIIOReadWarningListener, reset, setInput, setInput, setLocale

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static Logger LOG

UNKNOWN_IMAGE_TYPE

private static final String UNKNOWN_IMAGE_TYPE

See Also:

Constant Field Values

UNSUPPORTED_DATA_TYPE

private static final String UNSUPPORTED_DATA_TYPE

See Also:

Constant Field Values

MISMATCH_NUM_RLE_SEGMENTS

private static final String MISMATCH_NUM_RLE_SEGMENTS

See Also:

Constant Field Values

header

private final int[] header

buf

private final byte[] buf

headerPos

private long headerPos

bufOff

private long bufOff

bufPos

private int bufPos

bufLen

private int bufLen

iis

private ImageInputStream iis

width

private int width

height

private int height

Constructor Detail

RLEImageReader

protected RLEImageReader(ImageReaderSpi originatingProvider)

Method Detail

setInput

public void setInput(Object input,
                     boolean seekForwardOnly,
                     boolean ignoreMetadata)

Overrides:

setInput in class ImageReader

resetInternalState

private void resetInternalState()

getNumImages

public int getNumImages(boolean allowSearch)
                 throws IOException

Specified by:

getNumImages in class ImageReader

Throws:

IOException

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

getImageTypes

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

Specified by:

getImageTypes in class ImageReader

Throws:

IOException

getStreamMetadata

public IIOMetadata getStreamMetadata()
                              throws IOException

Specified by:

getStreamMetadata in class ImageReader

Throws:

IOException

getImageMetadata

public IIOMetadata getImageMetadata(int imageIndex)
                             throws IOException

Specified by:

getImageMetadata in class ImageReader

Throws:

IOException

canReadRaster

public boolean canReadRaster()

Overrides:

canReadRaster in class ImageReader

readRaster

public Raster readRaster(int imageIndex,
                         ImageReadParam param)
                  throws IOException

Overrides:

readRaster in class ImageReader

Throws:

IOException

read

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

Specified by:

read in class ImageReader

Throws:

IOException

checkIndex

private void checkIndex(int imageIndex)

getDestination

private BufferedImage getDestination(ImageReadParam param)

getDestinationRaster

private WritableRaster getDestinationRaster(ImageReadParam param)

read

private void read(DataBuffer db)
           throws IOException

Throws:

IOException

read

private void read(byte[][] bands)
           throws IOException

Throws:

IOException

read

private void read(short[] data)
           throws IOException

Throws:

IOException

seekSegment

private void seekSegment(int seg)
                  throws IOException

Throws:

IOException

readRLEHeader

private void readRLEHeader(int numSegments)
                    throws IOException

Throws:

IOException

unrle

private void unrle(int seg,
                   byte[] data)
            throws IOException

Throws:

IOException

read

private void read(byte[] data,
                  int pos,
                  int len)
           throws IOException

Throws:

IOException

unrle

private void unrle(int seg,
                   short[] data)
            throws IOException

Throws:

IOException

read

private void read(short[] data,
                  int pos,
                  int len,
                  int shift)
           throws IOException

Throws:

IOException

fillBuffer

private void fillBuffer()
                 throws IOException

Throws:

IOException

nextByte

private byte nextByte()
               throws IOException

Throws:

IOException