JIU 0.14.3

net.sourceforge.jiu.codecs.tiff
Class TIFFDecoderLogLuv

java.lang.Object
  extended by net.sourceforge.jiu.codecs.tiff.TIFFDecoder
      extended by net.sourceforge.jiu.codecs.tiff.TIFFDecoderLogLuv

public class TIFFDecoderLogLuv
extends TIFFDecoder

A TIFF decoder for files compressed with the LogLuv RLE method. This compression algorithm has the value 34676 (TIFFConstants.COMPRESSION_SGI_LOG_RLE) in the compression tag of an image file directory. Only image data with a photometric interpretation value of TIFFConstants.PHOTOMETRIC_TRUECOLOR_LOGLUV can be compressed with this method.

This implementation is based on the file tif_luv.c which is part of the TIFF library libtiff. The original implementation was written by Greg W. Larson.

Learn more about the color type and its encoding on Greg's page LogLuv Encoding for TIFF Images. You will also find numerous sample image files there.

Since:
0.10.0
Author:
Marco Schmidt

Constructor Summary
TIFFDecoderLogLuv()
           
 
Method Summary
 void decode()
          Decode data from input and write the decompressed pixel data to the image associated with this decoder.
 Integer[] getCompressionTypes()
          Returns an array with Integer values of all compression types supported by this decoder (see the COMPRESSION_xyz constants in TIFFConstants.
 void initialize()
          Check if all necessary parameters have been given to this decoder and initialize several internal fields from them.
 
Methods inherited from class net.sourceforge.jiu.codecs.tiff.TIFFDecoder
getBytesPerRow, getCodec, getImageFileDirectory, getInput, getTileIndex, getX1, getX2, getY1, getY2, putBytes, setCodec, setImageFileDirectory, setTileIndex
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TIFFDecoderLogLuv

public TIFFDecoderLogLuv()
Method Detail

decode

public void decode()
            throws InvalidFileStructureException,
                   IOException
Description copied from class: TIFFDecoder
Decode data from input and write the decompressed pixel data to the image associated with this decoder. Child classes must override this method to implement the decoding for a particular compression type.

Specified by:
decode in class TIFFDecoder
Throws:
InvalidFileStructureException
IOException

getCompressionTypes

public Integer[] getCompressionTypes()
Description copied from class: TIFFDecoder
Returns an array with Integer values of all compression types supported by this decoder (see the COMPRESSION_xyz constants in TIFFConstants. Normally, this is only one value, but some compression types got assigned more than one constant (e.g. deflated). Also, a decoder could be capable of dealing with more than one type of compression if the compression types are similar enough to justify that. However, typically a decoder can only deal with one type of compression.

Specified by:
getCompressionTypes in class TIFFDecoder
Returns:
array with Integer objects of all TIFF compression constants supported by this decoder

initialize

public void initialize()
                throws IOException,
                       MissingParameterException
Description copied from class: TIFFDecoder
Check if all necessary parameters have been given to this decoder and initialize several internal fields from them. Required parameters are a TIFFCodec object, a TIFFImageFileDirectory object and a tile index.

Overrides:
initialize in class TIFFDecoder
Throws:
IOException
MissingParameterException

JIU 0.14.3

Copyright © 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Marco Schmidt