Package com.luciad.format.raster

Class TLcdGIFImageDecoder

java.lang.Object

com.luciad.format.raster.ALcdTileDecoder

com.luciad.format.raster.TLcdGIFImageDecoder

All Implemented Interfaces:

ILcdTileDecoder, ILcdInputStreamFactoryCapable

public class TLcdGIFImageDecoder
extends ALcdTileDecoder
implements ILcdTileDecoder

This ILcdTileDecoder can decode GIF images. Its decoded images use only a single byte per pixel and an IndexColorModel, unlike the TLcdImageDecoder which produces images with 4 bytes per pixel and a DirectColorModel.

Constructor Summary

Constructors

Constructor	Description
TLcdGIFImageDecoder()

Method Summary

Modifier and Type	Method	Description
protected ILcdTileInfo	readTileFromStream(InputStream aInputStream, int aImageIndex, int aSubTileWidth, int aSubTileHeight, int aRowIndex, int aColumnIndex, 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

TLcdGIFImageDecoder

public TLcdGIFImageDecoder()

Method Details

readTileFromStream

protected ILcdTileInfo readTileFromStream(InputStream aInputStream,
 int aImageIndex,
 int aSubTileWidth,
 int aSubTileHeight,
 int aRowIndex,
 int aColumnIndex,
 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.

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

aColumnIndex - 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.