com.sun.media.imageioimpl.plugins.tiff

Class TIFFLZWCompressor

java.lang.Object

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

com.sun.media.imageioimpl.plugins.tiff.TIFFLZWCompressor

public class TIFFLZWCompressor
extends TIFFCompressor

LZW Compressor.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	predictor

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

compressionTagValue, compressionType, isCompressionLossless, metadata, stream, writer

Constructor Summary

Constructors

Constructor and Description
TIFFLZWCompressor(int predictorValue)

Method Summary

Methods

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.
void	setStream(ImageOutputStream stream) Sets the ImageOutputStream to be written.

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

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

Methods inherited from class java.lang.Object

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

Field Detail

predictor

int predictor

Constructor Detail

TIFFLZWCompressor

public TIFFLZWCompressor(int predictorValue)

Method Detail

setStream

public void setStream(ImageOutputStream stream)

Description copied from class: TIFFCompressor

Sets the ImageOutputStream to be written.

Overrides:

setStream in class TIFFCompressor

Parameters:

stream - an ImageOutputStream to be written.

See Also:

TIFFCompressor.getStream()

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.