Package nom.tam.image.compression.tile

Class TileCompressionOperation

java.lang.Object

nom.tam.image.tile.operation.AbstractTileOperation

nom.tam.image.compression.tile.TileCompressionOperation

All Implemented Interfaces:

java.lang.Runnable, ITileOperation

Direct Known Subclasses:

TileCompressor, TileDecompressor

abstract class TileCompressionOperation
extends AbstractTileOperation
implements ITileOperation

abstract information holder about the a tile that represents a rectangular part of the image. Will be sub classed for compression and decompression variants.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.nio.ByteBuffer	compressedData
protected int	compressedOffset
protected TileCompressionType	compressionType
protected ICompressOption	tileOptions

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	TileCompressionOperation(TiledImageCompressionOperation operation, int tileIndex, TileArea area)

Method Summary

Modifier and Type	Method	Description
private java.nio.ByteBuffer	convertToBuffer(java.lang.Object data)
protected abstract AbstractNullPixelMask	createImageNullPixelMask(ImageNullPixelMask imageNullPixelMask)
protected void	forceNoLoss(boolean value)	should the data of this tile be forced to case no data loss.
protected byte[]	getCompressedData()
protected java.nio.ByteBuffer	getCompressedWholeArea()
protected TileCompressionType	getCompressionType()
protected ICompressorControl	getCompressorControl()
protected ICompressorControl	getGzipCompressorControl()
protected TileCompressionOperation	initTileOptions()
protected TileCompressionOperation	setCompressed(java.lang.Object data, TileCompressionType type)
protected TileCompressionOperation	setCompressedOffset(int value)
TileCompressionOperation	setDimensions(int dataOffset, int width, int height)
protected void	setWholeImageCompressedBuffer(java.nio.ByteBuffer compressed)	set the buffer that describes the whole compressed image and let the tile create a slice of it from the position where the tile starts in the whole image.
java.lang.String	toString()

Methods inherited from class nom.tam.image.tile.operation.AbstractTileOperation

execute, getArea, getBaseType, getPixelSize, getPreviousTileOperation, getTileBuffer, getTiledImageOperation, getTileIndex, setTileBuffer, setWholeImageBuffer, waitForResult

Methods inherited from class java.lang.Object

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

Methods inherited from interface nom.tam.image.tile.operation.ITileOperation

waitForResult

Methods inherited from interface java.lang.Runnable

run

Field Detail

compressedData

protected java.nio.ByteBuffer compressedData

compressedOffset

protected int compressedOffset

compressionType

protected TileCompressionType compressionType

tileOptions

protected ICompressOption tileOptions

Constructor Detail

TileCompressionOperation

protected TileCompressionOperation(TiledImageCompressionOperation operation,
                                   int tileIndex,
                                   TileArea area)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

convertToBuffer

private java.nio.ByteBuffer convertToBuffer(java.lang.Object data)

forceNoLoss

protected void forceNoLoss(boolean value)

should the data of this tile be forced to case no data loss. This information is not relevant in all cases that it is ignored by default.

Parameters:

value - the value to set.

getCompressedData

protected byte[] getCompressedData()

getCompressedWholeArea

protected java.nio.ByteBuffer getCompressedWholeArea()

getCompressionType

protected TileCompressionType getCompressionType()

getCompressorControl

protected ICompressorControl getCompressorControl()

getGzipCompressorControl

protected ICompressorControl getGzipCompressorControl()

initTileOptions

protected TileCompressionOperation initTileOptions()

setCompressed

protected TileCompressionOperation setCompressed(java.lang.Object data,
                                                 TileCompressionType type)

setCompressedOffset

protected TileCompressionOperation setCompressedOffset(int value)

setDimensions

public TileCompressionOperation setDimensions(int dataOffset,
                                              int width,
                                              int height)

Specified by:

setDimensions in interface ITileOperation

Overrides:

setDimensions in class AbstractTileOperation

setWholeImageCompressedBuffer

protected void setWholeImageCompressedBuffer(java.nio.ByteBuffer compressed)

set the buffer that describes the whole compressed image and let the tile create a slice of it from the position where the tile starts in the whole image. Attention this method is not thread-safe because it changes the position of the buffer parameter. This buffer is just as big as the image buffer but will be reduced to the needed size as a last step of the Compression.

Parameters:

compressed - the buffer that describes the whole image.

createImageNullPixelMask

protected abstract AbstractNullPixelMask createImageNullPixelMask(ImageNullPixelMask imageNullPixelMask)