jj2000.j2k.fileformat.writer

Class FileFormatWriter

java.lang.Object

jj2000.j2k.fileformat.writer.FileFormatWriter

All Implemented Interfaces:

FileFormatBoxes

public class FileFormatWriter
extends Object
implements FileFormatBoxes

This class writes the file format wrapper that may or may not exist around a valid JPEG 2000 codestream. This class writes the simple possible legal fileformat

See Also:

FileFormatReader

Field Summary

Fields

Modifier and Type	Field and Description
private int[]	bpc Bits per component
private static int	BPC_LENGTH base length of Bits Per Component box
private boolean	bpcVaries Flag indicating whether number of bits per component varies
private int	clength Length of codestream
private ColorModel	colorModel The color model of the image to be compressed.
private static int	CSB_LENGTH Length of Colour Specification Box
private File	file The name of the file from which to read the codestream and to write the JP2 file
(package private) J2KMetadataFormat	format cache the J2KMetadataFormat
private static int	FTB_LENGTH Length of File Type Box
private int	height Image height
private static int	IHB_LENGTH Length of Image Header Box
private boolean	isIndexed Indicates that the colorModel is a IndexColorModel
private J2KMetadata	metadata The sample model of the image to be compressed.
private int	nc Number of components
private int	otherLength The length not counted by the orginal JJ2000 packages.
private SampleModel	sampleModel The sample model of the image to be compressed.
private ImageOutputStream	stream
private int	width Image width

Fields inherited from interface jj2000.j2k.fileformat.FileFormatBoxes

BITS_PER_COMPONENT_BOX, CAPTURE_RESOLUTION_BOX, CHANNEL_DEFINITION_BOX, COLOUR_SPECIFICATION_BOX, COMPONENT_MAPPING_BOX, CONTIGUOUS_CODESTREAM_BOX, CSB_APPROX, CSB_ENUM_GREY, CSB_ENUM_SRGB, CSB_ENUM_YCC, CSB_METH, CSB_PREC, DEFAULT_DISPLAY_RESOLUTION_BOX, FILE_TYPE_BOX, FT_BR, IMAGE_HEADER_BOX, IMB_C, IMB_IPR, IMB_UnkC, IMB_VERS, INTELLECTUAL_PROPERTY_BOX, JP2_HEADER_BOX, JP2_SIGNATURE_BOX, PALETTE_BOX, RESOLUTION_BOX, URL_BOX, UUID_BOX, UUID_INFO_BOX, UUID_LIST_BOX, XML_BOX

Constructor Summary

Constructors

Constructor and Description
FileFormatWriter(File file, ImageOutputStream stream, int height, int width, int nc, int[] bpc, int clength, ColorModel colorModel, SampleModel sampleModel, J2KMetadata metadata) The constructor of the FileFormatWriter.

Method Summary

Methods

Modifier and Type	Method and Description
private int	computeLength(IIOMetadataNode root)
private void	writeBox(IIOMetadataNode node)
void	writeContiguousCodeStreamBox() This method writes the Contiguous codestream box
int	writeFileFormat() This method reads the codestream and writes the file format wrapper and the codestream to the same file
private void	writeMetadata(J2KMetadata metadata)
private void	writeSuperBox(IIOMetadataNode node)

Methods inherited from class java.lang.Object

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

Field Detail

file

private File file

The name of the file from which to read the codestream and to write the JP2 file

stream

private ImageOutputStream stream

height

private int height

Image height

width

private int width

Image width

nc

private int nc

Number of components

bpc

private int[] bpc

Bits per component

bpcVaries

private boolean bpcVaries

Flag indicating whether number of bits per component varies

clength

private int clength

Length of codestream

CSB_LENGTH

private static final int CSB_LENGTH

Length of Colour Specification Box

See Also:

Constant Field Values

FTB_LENGTH

private static final int FTB_LENGTH

Length of File Type Box

See Also:

Constant Field Values

IHB_LENGTH

private static final int IHB_LENGTH

Length of Image Header Box

See Also:

Constant Field Values

BPC_LENGTH

private static final int BPC_LENGTH

base length of Bits Per Component box

See Also:

Constant Field Values

colorModel

private ColorModel colorModel

The color model of the image to be compressed.

sampleModel

private SampleModel sampleModel

The sample model of the image to be compressed.

metadata

private J2KMetadata metadata

The sample model of the image to be compressed.

isIndexed

private boolean isIndexed

Indicates that the colorModel is a IndexColorModel

otherLength

private int otherLength

The length not counted by the orginal JJ2000 packages.

format

J2KMetadataFormat format

cache the J2KMetadataFormat

Constructor Detail

FileFormatWriter

public FileFormatWriter(File file,
                ImageOutputStream stream,
                int height,
                int width,
                int nc,
                int[] bpc,
                int clength,
                ColorModel colorModel,
                SampleModel sampleModel,
                J2KMetadata metadata)

The constructor of the FileFormatWriter. It receives all the information necessary about a codestream to generate a legal JP2 file

Parameters:

file - The name of the file that is to be made a JP2 file

height - The height of the image

width - The width of the image

nc - The number of components

bpc - The number of bits per component

clength - Length of codestream

colorModel - The color model of the image to be compressed.

Method Detail

writeFileFormat

public int writeFileFormat()
                    throws IOException

This method reads the codestream and writes the file format wrapper and the codestream to the same file

Returns:

The number of bytes increases because of the file format

Throws:

IOException - If an I/O error ocurred.

writeMetadata

private void writeMetadata(J2KMetadata metadata)
                    throws IOException

Throws:

IOException

writeSuperBox

private void writeSuperBox(IIOMetadataNode node)
                    throws IOException

Throws:

IOException

writeBox

private void writeBox(IIOMetadataNode node)
               throws IOException

Throws:

IOException

computeLength

private int computeLength(IIOMetadataNode root)

writeContiguousCodeStreamBox

public void writeContiguousCodeStreamBox()
                                  throws IOException

This method writes the Contiguous codestream box

Throws:

IOException - If an I/O error ocurred.