Package loci.formats.services

Class JPEGTurboServiceImpl

java.lang.Object

loci.formats.services.JPEGTurboServiceImpl

All Implemented Interfaces:

loci.common.services.Service, JPEGTurboService

public class JPEGTurboServiceImpl
extends Object
implements JPEGTurboService

Based upon the NDPI to OME-TIFF converter by Matthias Baldauf: http://matthias-baldauf.at/software/ndpi_converter/

Author:

Melissa Linkert melissa at glencoesoftware.com

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	DRI
private static final int	EOI
private byte[]	header
private long	imageDimensions
private int	imageHeight
private int	imageWidth
private loci.common.RandomAccessInputStream	in
private static boolean	libraryLoaded
private Logger	logger
private static final org.slf4j.Logger	LOGGER
private int	mcuHeight
private int	mcuWidth
private static final String	NATIVE_LIB_CLASS
private long	offset
private int	restartInterval
private ArrayList<Long>	restartMarkers
private static final int	RST0
private static final int	RST7
private static final int	SOF0
private long	sos
private static final int	SOS
private int	tileHeight
private int	tileWidth
private int	xTiles
private int	yTiles

Constructor Summary

Constructors

Constructor	Description
JPEGTurboServiceImpl()

Method Summary

Modifier and Type	Method	Description
void	close()	Free resources associated with the initialized stream.
byte[]	getCompressedTile(byte[] data, int tileX, int tileY)	Similar to getTile(int, int), but returns the JPEG-compressed bytes.
byte[]	getCompressedTile(int tileX, int tileY)	Similar to getTile(int, int), but returns the JPEG-compressed bytes.
private byte[]	getFixedHeader()
long[]	getRestartMarkers()
byte[]	getTile(byte[] buf, int xCoordinate, int yCoordinate, int width, int height)	Get the uncompressed bytes representing the given bounding box.
byte[]	getTile(int tileX, int tileY)	Get the uncompressed bytes representing the given tile index.
int	getTileColumns()
int	getTileHeight()
int	getTileRows()
int	getTileWidth()
void	initialize(loci.common.RandomAccessInputStream jpeg, int width, int height)	Initialize the given stream, which represents an image of the given width and height.
boolean	isLibraryLoaded()
private void	parseSOF()
void	setRestartMarkers(long[] markers)

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

NATIVE_LIB_CLASS

private static final String NATIVE_LIB_CLASS

See Also:

• Constant Field Values

SOF0

private static final int SOF0

See Also:

• Constant Field Values

DRI

private static final int DRI

See Also:

• Constant Field Values

SOS

private static final int SOS

See Also:

• Constant Field Values

RST0

private static final int RST0

See Also:

• Constant Field Values

RST7

private static final int RST7

See Also:

• Constant Field Values

EOI

private static final int EOI

See Also:

• Constant Field Values

logger

private transient Logger logger

imageWidth

private int imageWidth

imageHeight

private int imageHeight

offset

private long offset

in

private loci.common.RandomAccessInputStream in

restartInterval

private int restartInterval

sos

private long sos

imageDimensions

private long imageDimensions

mcuWidth

private int mcuWidth

mcuHeight

private int mcuHeight

tileWidth

private int tileWidth

tileHeight

private int tileHeight

xTiles

private int xTiles

yTiles

private int yTiles

restartMarkers

private ArrayList<Long> restartMarkers

header

private byte[] header

libraryLoaded

private static boolean libraryLoaded

Constructor Details

JPEGTurboServiceImpl

public JPEGTurboServiceImpl()

Method Details

setRestartMarkers

public void setRestartMarkers(long[] markers)

Specified by:

setRestartMarkers in interface JPEGTurboService

Parameters:

markers - precalculated restart markers associated with the current JPEG stream

getRestartMarkers

public long[] getRestartMarkers()

Specified by:

getRestartMarkers in interface JPEGTurboService

Returns:

the restart markers associated with the current JPEG stream

initialize

public void initialize(loci.common.RandomAccessInputStream jpeg,
 int width,
 int height)
                throws loci.common.services.ServiceException,
IOException

Description copied from interface: JPEGTurboService

Initialize the given stream, which represents an image of the given width and height. This service is primarily intended for very large JPEG images whose width and/or height exceed 65535 (the maximum that can be recorded in a JPEG stream).

Specified by:

initialize in interface JPEGTurboService

Parameters:

jpeg - open stream containing JPEG data

width - total image width

height - total image height

Throws:

loci.common.services.ServiceException

IOException

getTileWidth

public int getTileWidth()

Specified by:

getTileWidth in interface JPEGTurboService

Returns:

the width (in pixels) of a tile

getTileHeight

public int getTileHeight()

Specified by:

getTileHeight in interface JPEGTurboService

Returns:

the height (in pixels) of a tile

getTileRows

public int getTileRows()

Specified by:

getTileRows in interface JPEGTurboService

Returns:

the number of rows of tiles

getTileColumns

public int getTileColumns()

Specified by:

getTileColumns in interface JPEGTurboService

Returns:

the number of columns of tiles

getTile

public byte[] getTile(byte[] buf,
 int xCoordinate,
 int yCoordinate,
 int width,
 int height)
               throws IOException

Description copied from interface: JPEGTurboService

Get the uncompressed bytes representing the given bounding box.

Specified by:

getTile in interface JPEGTurboService

Parameters:

buf - array in which to store uncompressed bytes

xCoordinate - upper-left X coordinate of bounding box

yCoordinate - upper-left Y coordinate of bounding box

width - width of bounding box

height - height of bounding box

Returns:

uncompressed bytes

Throws:

IOException

getTile

public byte[] getTile(int tileX,
 int tileY)
               throws IOException

Description copied from interface: JPEGTurboService

Get the uncompressed bytes representing the given tile index.

Specified by:

getTile in interface JPEGTurboService

Parameters:

tileX - column index of the tile

tileY - row index of the tile

Returns:

uncompressed bytes

Throws:

IOException

getCompressedTile

public byte[] getCompressedTile(int tileX,
 int tileY)
                         throws IOException

Description copied from interface: JPEGTurboService

Similar to getTile(int, int), but returns the JPEG-compressed bytes.

Specified by:

getCompressedTile in interface JPEGTurboService

Parameters:

tileX - column index of the tile

tileY - row index of the tile

Returns:

JPEG-compressed bytes

Throws:

IOException

getCompressedTile

public byte[] getCompressedTile(byte[] data,
 int tileX,
 int tileY)
                         throws IOException

Description copied from interface: JPEGTurboService

Similar to getTile(int, int), but returns the JPEG-compressed bytes.

Specified by:

getCompressedTile in interface JPEGTurboService

Parameters:

data - preallocated array for storing tile

tileX - column index of the tile

tileY - row index of the tile

Returns:

JPEG-compressed bytes

Throws:

IOException

close

public void close()
           throws IOException

Description copied from interface: JPEGTurboService

Free resources associated with the initialized stream.

Specified by:

close in interface JPEGTurboService

Throws:

IOException

isLibraryLoaded

public boolean isLibraryLoaded()

Specified by:

isLibraryLoaded in interface JPEGTurboService

Returns:

true if the underlying native library was successfully loaded

getFixedHeader

private byte[] getFixedHeader()
                       throws IOException

Throws:

IOException

parseSOF

private void parseSOF()
               throws IOException

Throws:

IOException