com.sun.media.imageioimpl.plugins.tiff

Class TIFFRLECompressor

java.lang.Object

com.sun.media.imageio.plugins.tiff.TIFFCompressor

com.sun.media.imageioimpl.plugins.tiff.TIFFFaxCompressor

com.sun.media.imageioimpl.plugins.tiff.TIFFRLECompressor

public class TIFFRLECompressor
extends TIFFFaxCompressor

Field Summary

Fields inherited from class com.sun.media.imageioimpl.plugins.tiff.TIFFFaxCompressor

bits, BLACK, byteTable, horz, horzMode, inverseFill, makeupCodes, makeupCodesBlack, makeupCodesWhite, ndex, pass, passMode, termCodes, termCodesBlack, termCodesWhite, vert, vertMode, WHITE

Fields inherited from class com.sun.media.imageio.plugins.tiff.TIFFCompressor

compressionTagValue, compressionType, isCompressionLossless, metadata, stream, writer

Constructor Summary

Constructors

Constructor and Description
TIFFRLECompressor()

Method Summary

Modifier and Type	Method and Description
int	encode(byte[] b, int off, int width, int height, int[] bitsPerSample, int scanlineStride) Encodes the supplied image data, writing to the currently set ImageOutputStream.
int	encodeRLE(byte[] data, int rowOffset, int colOffset, int rowLength, byte[] compData) Encode a row of data using Modified Huffman Compression also known as CCITT RLE (Run Lenth Encoding).

Methods inherited from class com.sun.media.imageioimpl.plugins.tiff.TIFFFaxCompressor

add1DBits, add2DBits, addEOFB, addEOL, encode1D, initBitBuf, nextState, setMetadata

Methods inherited from class com.sun.media.imageio.plugins.tiff.TIFFCompressor

getCompressionTagValue, getCompressionType, getMetadata, getStream, getWriter, isCompressionLossless, setStream, setWriter

Methods inherited from class java.lang.Object

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

Constructor Detail

TIFFRLECompressor

public TIFFRLECompressor()

Method Detail

encodeRLE

public int encodeRLE(byte[] data,
                     int rowOffset,
                     int colOffset,
                     int rowLength,
                     byte[] compData)

Encode a row of data using Modified Huffman Compression also known as CCITT RLE (Run Lenth Encoding).

Parameters:

data - The row of data to compress.

rowOffset - Starting index in data.

colOffset - Bit offset within first data[rowOffset].

rowLength - Number of bits in the row.

compData - The compressed data.

Returns:

The number of bytes saved in the compressed data array.

encode

public int encode(byte[] b,
                  int off,
                  int width,
                  int height,
                  int[] bitsPerSample,
                  int scanlineStride)
           throws IOException

Description copied from class: TIFFCompressor

Encodes the supplied image data, writing to the currently set ImageOutputStream.

Specified by:

encode in class TIFFCompressor

Parameters:

b - an array of bytes containing the packed but uncompressed image data.

off - the starting offset of the data to be written in the array b.

width - the width of the rectangle of pixels to be written.

height - the height of the rectangle of pixels to be written.

bitsPerSample - an array of ints indicting the number of bits used to represent each image sample within a pixel.

scanlineStride - the number of bytes separating each row of the input data.

Returns:

the number of bytes written.

Throws:

IOException - if the supplied data cannot be encoded by this TIFFCompressor, or if any I/O error occurs during writing.