com.luciad.format.ecw

Advanced Raster ServicesClass TLcdECWImageDecoder

java.lang.Object

com.luciad.format.ecw.TLcdECWImageDecoder

All Implemented Interfaces:

ILcdTileDecoder

public class TLcdECWImageDecoder
extends Object
implements ILcdTileDecoder

This class is an ILcdTileDecoder for ECW images.

When reading a tile, the image index specifies the downscaling factor to be applied to the original image size. E.g. with a factor of 2, the image behaves as if it is twice as small compared to its actual width and height.

This class is part of the Advanced Raster Connectors component.

Constructor Summary

Constructors

Constructor and Description
TLcdECWImageDecoder() Creates a new TLcdECWImageDecoder.

Method Summary

Modifier and Type	Method and Description
ILcdTileInfo	readTile(String aFileName, int aImageIndex, int aSubTileWidth, int aSubTileHeight, int aSubTileRowIndex, int aSubTileColumnIndex, ILcdBuffer aBuffer) Reads a sub-tile from a file.
ILcdTileInfo	readTile(URL aURL, int aScaleFactor, int aSubTileWidth, int aSubTileHeight, int aSubTileRowIndex, int aSubTileColumnIndex, ILcdBuffer aBuffer) Reads a sub-tile from a URL.

Methods inherited from class java.lang.Object

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

Constructor Detail

TLcdECWImageDecoder

public TLcdECWImageDecoder()

Creates a new TLcdECWImageDecoder.

Method Detail

readTile

public ILcdTileInfo readTile(URL aURL,
                             int aScaleFactor,
                             int aSubTileWidth,
                             int aSubTileHeight,
                             int aSubTileRowIndex,
                             int aSubTileColumnIndex,
                             ILcdBuffer aBuffer)
                      throws TLcdCodecException

Description copied from interface: ILcdTileDecoder

Reads a sub-tile from a URL.

Specified by:

readTile in interface ILcdTileDecoder

Parameters:

aURL - the URL containing the tile.

aScaleFactor - the index of the tile in the given URL (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.

readTile

public ILcdTileInfo readTile(String aFileName,
                             int aImageIndex,
                             int aSubTileWidth,
                             int aSubTileHeight,
                             int aSubTileRowIndex,
                             int aSubTileColumnIndex,
                             ILcdBuffer aBuffer)
                      throws TLcdCodecException

Description copied from interface: ILcdTileDecoder

Reads a sub-tile from a file.

Specified by:

readTile in interface ILcdTileDecoder

Parameters:

aFileName - the name of the file containing the tile.

aImageIndex - the index of the tile in the given file (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.