org.esa.snap.core.image

Class TiledFileOpImage

java.lang.Object

javax.media.jai.PlanarImage

javax.media.jai.OpImage

javax.media.jai.SourcelessOpImage

org.esa.snap.core.image.TiledFileOpImage

All Implemented Interfaces:

RenderedImage, javax.media.jai.ImageJAI, javax.media.jai.PropertyChangeEmitter, javax.media.jai.PropertySource, javax.media.jai.WritablePropertySource

public class TiledFileOpImage
extends javax.media.jai.SourcelessOpImage

Field Summary

Fields inherited from class javax.media.jai.OpImage

cache, cobbleSources, OP_COMPUTE_BOUND, OP_IO_BOUND, OP_NETWORK_BOUND, tileCacheMetric, tileRecycler

Fields inherited from class javax.media.jai.PlanarImage

colorModel, eventManager, height, minX, minY, properties, sampleModel, tileFactory, tileGridXOffset, tileGridYOffset, tileHeight, tileWidth, width

Method Summary

Modifier and Type	Method and Description
Raster	computeTile(int tileX, int tileY) Computes a tile.
static TiledFileOpImage	create(File imageDir, Properties defaultImageProperties)
static TiledFileOpImage	create(Path imageDir, Properties defaultImageProperties)
static TiledFileOpImage	create(VirtualDir imageDir, Properties defaultImageProperties)
void	dispose()
static Object	getDataObject(Raster raster) Gets the data object from the data buffer of the given raster.
static void	readRawDataTile(ImageInputStream stream, WritableRaster raster) Reads the data buffer of the given raster from the given image input stream.
static void	writeRawDataTile(Raster raster, ImageOutputStream stream) Writes the data buffer of the given raster to the given image output stream.

Methods inherited from class javax.media.jai.SourcelessOpImage

computesUniqueTiles, mapDestRect, mapSourceRect

Methods inherited from class javax.media.jai.OpImage

addTileToCache, cancelTiles, computeRect, computeRect, createTile, getExpandedNumBands, getFormatTags, getOperationComputeType, getTile, getTileCache, getTileCacheMetric, getTileDependencies, getTileFromCache, getTileRecycler, getTiles, hasExtender, mapDestPoint, mapSourcePoint, prefetchTiles, queueTiles, recycleTile, setTileCache, vectorize, vectorize, vectorize

Methods inherited from class javax.media.jai.PlanarImage

addPropertyChangeListener, addPropertyChangeListener, addSink, addSink, addSource, addTileComputationListener, copyData, copyData, copyExtendedData, createColorModel, createSnapshot, createWritableRaster, finalize, getAsBufferedImage, getAsBufferedImage, getBounds, getColorModel, getData, getData, getDefaultColorModel, getExtendedData, getGraphics, getHeight, getImageID, getMaxTileX, getMaxTileY, getMaxX, getMaxY, getMinTileX, getMinTileY, getMinX, getMinY, getNumBands, getNumSources, getNumXTiles, getNumYTiles, getProperties, getProperty, getPropertyClass, getPropertyNames, getPropertyNames, getSampleModel, getSinks, getSource, getSourceImage, getSourceObject, getSources, getSplits, getTileComputationListeners, getTileFactory, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileIndices, getTileRect, getTiles, getTileWidth, getWidth, overlapsMultipleTiles, removeProperty, removePropertyChangeListener, removePropertyChangeListener, removeSink, removeSink, removeSinks, removeSource, removeSources, removeTileComputationListener, setImageLayout, setProperties, setProperty, setSource, setSources, tileXToX, tileXToX, tileYToY, tileYToY, toString, wrapRenderedImage, XToTileX, XToTileX, YToTileY, YToTileY

Methods inherited from class java.lang.Object

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

Method Detail

create

public static TiledFileOpImage create(File imageDir,
                                      Properties defaultImageProperties)
                               throws IOException

Throws:

IOException

create

public static TiledFileOpImage create(VirtualDir imageDir,
                                      Properties defaultImageProperties)
                               throws IOException

Throws:

IOException

create

public static TiledFileOpImage create(Path imageDir,
                                      Properties defaultImageProperties)
                               throws IOException

Throws:

IOException

computeTile

public Raster computeTile(int tileX,
                          int tileY)

Computes a tile. Since the operation has no sources, there is no need to worry about cobbling.

Subclasses should implement the computeRect(PlanarImage[], WritableRaster, Rectangle) method to perform the actual computation.

Overrides:

computeTile in class javax.media.jai.SourcelessOpImage

Parameters:

tileX - The X index of the tile.

tileY - The Y index of the tile.

readRawDataTile

public static void readRawDataTile(ImageInputStream stream,
                                   WritableRaster raster)
                            throws IOException

Reads the data buffer of the given raster from the given image input stream.

Parameters:

raster - The raster.

stream - The image input stream.

Throws:

IOException - if an I/O error occurs

IllegalArgumentException - if the raster's data arrays cannot be retrieved

NullPointerException - if raster or stream is null

writeRawDataTile

public static void writeRawDataTile(Raster raster,
                                    ImageOutputStream stream)
                             throws IOException

Writes the data buffer of the given raster to the given image output stream.

Parameters:

raster - The raster.

stream - The image output stream.

Throws:

IOException - if an I/O error occurs

IllegalArgumentException - if the raster's data arrays cannot be retrieved

NullPointerException - if raster or stream is null

getDataObject

public static Object getDataObject(Raster raster)

Gets the data object from the data buffer of the given raster. The data object which will always be of a primitive array type.

Parameters:

raster - The raster.

Returns:

The data array.

Throws:

IllegalArgumentException - if the raster's data arrays cannot be retrieved

NullPointerException - if raster is null

dispose

public void dispose()

Overrides:

dispose in class javax.media.jai.OpImage