loci.formats.codec

Class RPZACodec

java.lang.Object

loci.formats.codec.BaseCodec

loci.formats.codec.RPZACodec

All Implemented Interfaces:

Codec

public class RPZACodec
extends BaseCodec

Implements encoding and decoding methods for Apple RPZA. This code was adapted from the RPZA codec for ffmpeg - see http://ffmpeg.mplayerhq.hu

Field Summary

Fields

Modifier and Type	Field and Description
private int	pixelPtr
private int	rowPtr
private int	stride
private int	totalBlocks

Fields inherited from class loci.formats.codec.BaseCodec

LOGGER

Constructor Summary

Constructors

Constructor and Description
RPZACodec()

Method Summary

Modifier and Type	Method and Description
byte[]	compress(byte[] input, CodecOptions options) Compresses a block of data.
byte[]	decompress(loci.common.RandomAccessInputStream in, CodecOptions options) The CodecOptions parameter should have the following fields set: width height
private void	unpack(short s, byte[] array, int offset, int len)
private void	updateBlock(int width)

Methods inherited from class loci.formats.codec.BaseCodec

compress, decompress, decompress, decompress, decompress, test

Methods inherited from class java.lang.Object

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

Field Detail

totalBlocks

private int totalBlocks

pixelPtr

private int pixelPtr

rowPtr

private int rowPtr

stride

private int stride

Constructor Detail

RPZACodec

public RPZACodec()

Method Detail

compress

public byte[] compress(byte[] input,
                       CodecOptions options)
                throws FormatException

Description copied from interface: Codec

Compresses a block of data.

Parameters:

input - The data to be compressed.

options - Options to be used during compression, if appropriate.

Returns:

The compressed data.

Throws:

FormatException - If input is not a compressed data block of the appropriate type.

decompress

public byte[] decompress(loci.common.RandomAccessInputStream in,
                         CodecOptions options)
                  throws FormatException,
                         IOException

The CodecOptions parameter should have the following fields set: width height

Specified by:

decompress in interface Codec

Specified by:

decompress in class BaseCodec

Parameters:

in - The stream from which to read compressed data.

options - Options to be used during decompression.

Returns:

The decompressed data.

Throws:

FormatException - If data is not valid compressed data for this decompressor.

IOException

See Also:

Codec.decompress(RandomAccessInputStream, CodecOptions)

unpack

private void unpack(short s,
                    byte[] array,
                    int offset,
                    int len)

updateBlock

private void updateBlock(int width)