java.lang.Object
- net.sourceforge.jiu.codecs.tiff.TIFFDecoder
- - 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

Field Summary

Fields
Modifier and Type Field Description

private int compressedSize

private DataInput in

private boolean rle

private int tileWidth

Constructor Summary

Constructors
Constructor Description

TIFFDecoderLogLuv()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`decode()`	Decode data from input and write the decompressed pixel data to the image associated with this decoder.
`private void`	`decodeRow(byte[] row)`
`private void`	`decodeRowPacked24(byte[] row)`
`private void`	`decodeRowRLE(byte[] row)`
`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

- Field Detail
  - in
```
private DataInput in
```
  - compressedSize
```
private int compressedSize
```
  - tileWidth
```
private int tileWidth
```
  - rle
```
private boolean rle
```
- 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
  - decodeRow
```
private void decodeRow(byte[] row)
                throws InvalidFileStructureException,
                       IOException
```
    Throws:
    
    InvalidFileStructureException
    
    IOException
  - decodeRowPacked24
```
private void decodeRowPacked24(byte[] row)
                        throws InvalidFileStructureException,
                               IOException
```
    Throws:
    
    InvalidFileStructureException
    
    IOException
  - decodeRowRLE
```
private void decodeRowRLE(byte[] row)
                   throws InvalidFileStructureException,
                          IOException
```
    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

Modifier and Type	Field	Description
`private int`	`compressedSize`
`private DataInput`	`in`
`private boolean`	`rle`
`private int`	`tileWidth`

Class TIFFDecoderLogLuv

Field Summary

Constructor Summary

Method Summary

Methods inherited from class net.sourceforge.jiu.codecs.tiff.TIFFDecoder

Methods inherited from class java.lang.Object

Field Detail

in

compressedSize

tileWidth

rle

Constructor Detail

TIFFDecoderLogLuv

Method Detail

decode

decodeRow

decodeRowPacked24

decodeRowRLE

getCompressionTypes

initialize