Package de.digitalcollections.openjpeg.imageio

Class OpenJp2ImageReader

java.lang.Object

javax.imageio.ImageReader

de.digitalcollections.openjpeg.imageio.OpenJp2ImageReader

public class OpenJp2ImageReader
extends ImageReader

ImageReader for JPEG2000 images, based on the openjp2 library from the OpenJPEG project, accessed via JNR-FFI.

Field Summary

Fields inherited from class javax.imageio.ImageReader

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

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	OpenJp2ImageReader(ImageReaderSpi originatingProvider, OpenJpeg lib)

Method Summary

Modifier and Type	Method	Description
void	dispose()
int	getHeight(int imageIndex)	Get the height of the given resolution of the image.
IIOMetadata	getImageMetadata(int imageIndex)
Iterator<ImageTypeSpecifier>	getImageTypes(int imageIndex)
int	getNumImages(boolean allowSearch)	Corresponds to the number of resolutions in the image.
IIOMetadata	getStreamMetadata()
int	getTileGridXOffset(int imageIndex)
int	getTileGridYOffset(int imageIndex)
int	getTileHeight(int imageIndex)
int	getTileWidth(int imageIndex)
int	getWidth(int imageIndex)	Get the width of the given resolution of the image.
boolean	isImageTiled(int imageIndex)
BufferedImage	read(int imageIndex, ImageReadParam param)	Read the image in the given resolution.
BufferedImage	readTile(int imageIndex, int tileX, int tileY)
void	setInput(Object input, boolean seekForwardOnly, boolean ignoreMetadata)

Methods inherited from class javax.imageio.ImageReader

abort, abortRequested, addIIOReadProgressListener, addIIOReadUpdateListener, addIIOReadWarningListener, canReadRaster, checkReadParamBandSettings, clearAbortRequest, computeRegions, getAspectRatio, getAvailableLocales, getDefaultReadParam, getDestination, getFormatName, getImageMetadata, getInput, getLocale, getMinIndex, getNumThumbnails, getOriginatingProvider, getRawImageType, getSourceRegion, getStreamMetadata, getThumbnailHeight, getThumbnailWidth, hasThumbnails, isIgnoringMetadata, 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, 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

Constructor Detail

OpenJp2ImageReader

protected OpenJp2ImageReader(ImageReaderSpi originatingProvider,
                             OpenJpeg lib)

Method Detail

setInput

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

Overrides:

setInput in class ImageReader

getNumImages

public int getNumImages(boolean allowSearch)

Corresponds to the number of resolutions in the image.

Image 0 has the native resolution, all following indices are 1/2^idx times smaller.

Specified by:

getNumImages in class ImageReader

getWidth

public int getWidth(int imageIndex)

Get the width of the given resolution of the image.

Specified by:

getWidth in class ImageReader

getHeight

public int getHeight(int imageIndex)

Get the height of the given resolution of the image.

Specified by:

getHeight in class ImageReader

getImageTypes

public Iterator<ImageTypeSpecifier> getImageTypes(int imageIndex)

Specified by:

getImageTypes in class ImageReader

read

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

Read the image in the given resolution.

Specified by:

read in class ImageReader

Throws:

IOException

isImageTiled

public boolean isImageTiled(int imageIndex)

Overrides:

isImageTiled in class ImageReader

getTileWidth

public int getTileWidth(int imageIndex)

Overrides:

getTileWidth in class ImageReader

getTileHeight

public int getTileHeight(int imageIndex)

Overrides:

getTileHeight in class ImageReader

getTileGridXOffset

public int getTileGridXOffset(int imageIndex)

Overrides:

getTileGridXOffset in class ImageReader

getTileGridYOffset

public int getTileGridYOffset(int imageIndex)

Overrides:

getTileGridYOffset in class ImageReader

readTile

public BufferedImage readTile(int imageIndex,
                              int tileX,
                              int tileY)
                       throws IOException

Overrides:

readTile in class ImageReader

Throws:

IOException

getStreamMetadata

public IIOMetadata getStreamMetadata()

Specified by:

getStreamMetadata in class ImageReader

getImageMetadata

public IIOMetadata getImageMetadata(int imageIndex)

Specified by:

getImageMetadata in class ImageReader

dispose

public void dispose()

Overrides:

dispose in class ImageReader