jj2000.j2k.fileformat.writer
Class FileFormatWriter

java.lang.Object
  |
  +--jj2000.j2k.fileformat.writer.FileFormatWriter

All Implemented Interfaces:

FileFormatBoxes

public class FileFormatWriter

extends java.lang.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

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 static int	CSB_LENGTH Length of Colour Specification Box
private BEBufferedRandomAccessFile	fi The file from which to read the codestream and write file
private java.lang.String	filename The name of the file from which to read the codestream and to write the JP2 file
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 int	nc Number of components
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_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

FileFormatWriter(java.lang.String filename, int height, int width, int nc, int[] bpc, int clength)
The constructor of the FileFormatWriter.

Method Summary

void	writeBitsPerComponentBox() This method writes the Bits Per Component box
void	writeColourSpecificationBox() This method writes the Colour Specification box
void	writeContiguousCodeStreamBox(byte[] cs) 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
void	writeFileTypeBox() This method writes the File Type box
void	writeImageHeaderBox() This method writes the Image Header box
void	writeJP2HeaderBox() This method writes the JP2Header box

Methods inherited from class java.lang.Object

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

Field Detail

fi

private BEBufferedRandomAccessFile fi

The file from which to read the codestream and write file

filename

private java.lang.String filename

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

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

Constructor Detail

FileFormatWriter

public FileFormatWriter(java.lang.String filename,
                        int height,
                        int width,
                        int nc,
                        int[] bpc,
                        int clength)

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

Parameters:

filename - 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

Method Detail

writeFileFormat

public int writeFileFormat()
                    throws java.io.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:

java.io.IOException - If an I/O error ocurred.

writeFileTypeBox

public void writeFileTypeBox()
                      throws java.io.IOException

This method writes the File Type box

Throws:

java.io.IOException - If an I/O error ocurred.

writeJP2HeaderBox

public void writeJP2HeaderBox()
                       throws java.io.IOException

This method writes the JP2Header box

Throws:

java.io.IOException - If an I/O error ocurred.

writeBitsPerComponentBox

public void writeBitsPerComponentBox()
                              throws java.io.IOException

This method writes the Bits Per Component box

Throws:

java.io.IOException - If an I/O error ocurred.

writeColourSpecificationBox

public void writeColourSpecificationBox()
                                 throws java.io.IOException

This method writes the Colour Specification box

Throws:

java.io.IOException - If an I/O error ocurred.

writeImageHeaderBox

public void writeImageHeaderBox()
                         throws java.io.IOException

This method writes the Image Header box

Throws:

java.io.IOException - If an I/O error ocurred.

writeContiguousCodeStreamBox

public void writeContiguousCodeStreamBox(byte[] cs)
                                  throws java.io.IOException

This method writes the Contiguous codestream box

Parameters:

cs - The contiguous codestream

Throws:

java.io.IOException - If an I/O error ocurred.