Package com.luciad.format.bci

Class TLcdBCITileDecoder

java.lang.Object

com.luciad.format.raster.ALcdTileDecoder

com.luciad.format.bci.TLcdBCITileDecoder

All Implemented Interfaces:

ILcdTileDecoder, ILcdInputStreamFactoryCapable

public class TLcdBCITileDecoder
extends ALcdTileDecoder
implements ILcdTileDecoder

This class is an ILcdTileDecoder for BCI tiles.

Since:

7.0.17

Constructor Summary

Constructors

Constructor	Description
TLcdBCITileDecoder(ColorModel aColorModel)	Creates a new TLcdBCITileDecoder object with a given color model.
TLcdBCITileDecoder(ColorModel aColorModel, int[][] aDecompressionLookupTable)	Creates a new TLcdBCITileDecoder object with a given color model and a decompression lookup table.

Method Summary

Modifier and Type	Method	Description
protected ILcdTileInfo	readTileFromStream(InputStream aInputStream, int aImageIndex, int aSubTileWidth, int aSubTileHeight, int aSubTileRowIndex, int aSubTileColumnIndex, ILcdBuffer aBuffer)	Reads a sub-tile from an input stream.

Methods inherited from class com.luciad.format.raster.ALcdTileDecoder

getInputStreamFactory, isTraceOn, readTile, readTile, setClassTraceOn, setInputStreamFactory, setTraceOn

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.luciad.format.raster.ILcdTileDecoder

readTile, readTile

Constructor Details

TLcdBCITileDecoder

public TLcdBCITileDecoder(ColorModel aColorModel)

Creates a new TLcdBCITileDecoder object with a given color model.

Parameters:

aColorModel - the color model to be used for decoded tiles. The color model must be an 8-bit (image maps) or 16-bit (elevation maps) IndexColorModel.

TLcdBCITileDecoder

public TLcdBCITileDecoder(ColorModel aColorModel,
 int[][] aDecompressionLookupTable)

Creates a new TLcdBCITileDecoder object with a given color model and a decompression lookup table. The decompression lookup table is required when the tiles are compressed using vector quantization. It is the decoded version of the file "vqtable" that can be associated with a BCI raster.

Parameters:

aColorModel - the color model to be used for decoded tiles. The color model must be an 8-bit (image maps) or 16-bit (elevation maps) IndexColorModel.

aDecompressionLookupTable - the decompression lookup table to be used for decoded tiles (4 x 4096 elements).

Method Details

readTileFromStream

protected ILcdTileInfo readTileFromStream(InputStream aInputStream,
 int aImageIndex,
 int aSubTileWidth,
 int aSubTileHeight,
 int aSubTileRowIndex,
 int aSubTileColumnIndex,
 ILcdBuffer aBuffer)
                                   throws TLcdCodecException

Description copied from class: ALcdTileDecoder

Reads a sub-tile from an input stream.

Specified by:

readTileFromStream in class ALcdTileDecoder

Parameters:

aInputStream - the input stream from which the tile data can be read.

aImageIndex - the index of the tile in the given input stream (if applicable).

aSubTileWidth - the width of the sub-tiles, expressed in pixels.

aSubTileHeight - the height of the sub-tiles, expressed in pixels.

aSubTileRowIndex - the row number of the sub-tile to be decoded.

aSubTileColumnIndex - the column number of the sub-tile to be decoded.

aBuffer - the buffer in which the decoded bytes will be stored.

Returns:

ILcdTileInfo information about the decoded tile.

Throws:

TLcdCodecException - in case of decoding problems.