Package gov.nih.mipav.model.file.rawjp2

Class ImgReaderRAWColorSlice

java.lang.Object

jj2000.j2k.image.input.ImgReader

gov.nih.mipav.model.file.rawjp2.ImgReaderRAWSlice

gov.nih.mipav.model.file.rawjp2.ImgReaderRAWColorSlice

All Implemented Interfaces:

jj2000.j2k.image.BlkImgDataSrc, jj2000.j2k.image.ImgData

public class ImgReaderRAWColorSlice
extends ImgReaderRAWSlice

Field Summary

Fields

Modifier and Type	Field	Description
private int	cFactor
private int[]	linebuf
private int	sliceOffset

Fields inherited from class gov.nih.mipav.model.file.rawjp2.ImgReaderRAWSlice

DC_OFFSET, fName, image, in, intBlk, rb, useModImg

Fields inherited from class jj2000.j2k.image.input.ImgReader

h, nc, w

Constructor Summary

Constructors

Constructor	Description
ImgReaderRAWColorSlice(ModelImage image, int si, boolean savingAsEncJP2)
ImgReaderRAWColorSlice(ModelImage image, int si, int ti, boolean savingAsEncJP2)
ImgReaderRAWColorSlice(File file, int si)
ImgReaderRAWColorSlice(RandomAccessFile in, int si)
ImgReaderRAWColorSlice(String fname, int si)

Method Summary

Modifier and Type	Method	Description
jj2000.j2k.image.DataBlk	getInternCompData(jj2000.j2k.image.DataBlk blk, int c)	Returns, in the blk argument, the block of image data containing the specifed rectangular area, in the specified component.
int	getNomRangeBits(int c)	Returns the number of bits corresponding to the nominal range of the data in the specified component.
boolean	isOrigSigned(int c)	Returns true if the data read was originally signed in the specified component, false if not.
void	setSliceIndex(int si, boolean useModImg)
void	setSliceIndex(int si, int ti, boolean useModImg)

Methods inherited from class gov.nih.mipav.model.file.rawjp2.ImgReaderRAWSlice

close, getCompData, getFixedPoint, toString

Methods inherited from class jj2000.j2k.image.input.ImgReader

getCompImgHeight, getCompImgWidth, getCompSubsX, getCompSubsY, getCompULX, getCompULY, getImgHeight, getImgULX, getImgULY, getImgWidth, getNomTileHeight, getNomTileWidth, getNumComps, getNumTiles, getNumTiles, getTile, getTileCompHeight, getTileCompWidth, getTileHeight, getTileIdx, getTilePartULX, getTilePartULY, getTileWidth, nextTile, setTile

Methods inherited from class java.lang.Object

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

Field Details

cFactor

private int cFactor

linebuf

private int[] linebuf

sliceOffset

private int sliceOffset

Constructor Details

ImgReaderRAWColorSlice

public ImgReaderRAWColorSlice(File file,
 int si)
                       throws IOException

Throws:

IOException

ImgReaderRAWColorSlice

public ImgReaderRAWColorSlice(String fname,
 int si)
                       throws IOException

Throws:

IOException

ImgReaderRAWColorSlice

public ImgReaderRAWColorSlice(RandomAccessFile in,
 int si)
                       throws EOFException,
IOException

Throws:

EOFException

IOException

ImgReaderRAWColorSlice

public ImgReaderRAWColorSlice(ModelImage image,
 int si,
 boolean savingAsEncJP2)

ImgReaderRAWColorSlice

public ImgReaderRAWColorSlice(ModelImage image,
 int si,
 int ti,
 boolean savingAsEncJP2)

Method Details

setSliceIndex

public void setSliceIndex(int si,
 boolean useModImg)
                   throws IOException

Overrides:

setSliceIndex in class ImgReaderRAWSlice

Throws:

IOException

setSliceIndex

public void setSliceIndex(int si,
 int ti,
 boolean useModImg)
                   throws IOException

Overrides:

setSliceIndex in class ImgReaderRAWSlice

Throws:

IOException

getInternCompData

public jj2000.j2k.image.DataBlk getInternCompData(jj2000.j2k.image.DataBlk blk,
 int c)

Description copied from class: ImgReaderRAWSlice

Returns, in the blk argument, the block of image data containing the specifed rectangular area, in the specified component. The data is returned, as a reference to the internal data, if any, instead of as a copy, therefore the returned data should not be modified.

After being read the coefficients are level shifted by subtracting 2^(nominal bit range - 1)

The rectangular area to return is specified by the 'ulx', 'uly', 'w' and 'h' members of the 'blk' argument, relative to the current tile. These members are not modified by this method. The 'offset' and 'scanw' of the returned data can be arbitrary. See the 'DataBlk' class.

If the data array in blk is null, then a new one is created if necessary. The implementation of this interface may choose to return the same array or a new one, depending on what is more efficient. Therefore, the data array in blk prior to the method call should not be considered to contain the returned data, a new array may have been created. Instead, get the array from blk after the method has returned.

The returned data always has its 'progressive' attribute unset (i.e. false).

When an I/O exception is encountered the JJ2KExceptionHandler is used. The exception is passed to its handleException method. The action that is taken depends on the action that has been registered in JJ2KExceptionHandler. See JJ2KExceptionHandler for details.

Specified by:

getInternCompData in interface jj2000.j2k.image.BlkImgDataSrc

Overrides:

getInternCompData in class ImgReaderRAWSlice

Parameters:

blk - Its coordinates and dimensions specify the area to return. Some fields in this object are modified to return the data.

c - The index of the component from which to get the data. Only 0 is valid.

Returns:

The requested DataBlk

See Also:

• ImgReaderRAWSlice.getCompData(jj2000.j2k.image.DataBlk, int)
• JJ2KExceptionHandler

getNomRangeBits

public int getNomRangeBits(int c)

Description copied from class: ImgReaderRAWSlice

Returns the number of bits corresponding to the nominal range of the data in the specified component. This is the value rb (range bits) that was specified in the constructor, which normally is 8 for non bilevel data, and 1 for bilevel data.

If this number is b then the nominal range is between -2^(b-1) and 2^(b-1)-1, since unsigned data is level shifted to have a nominal average of 0.

Specified by:

getNomRangeBits in interface jj2000.j2k.image.ImgData

Overrides:

getNomRangeBits in class ImgReaderRAWSlice

Parameters:

c - The index of the component.

Returns:

The number of bits corresponding to the nominal range of the data. Fro floating-point data this value is not applicable and the return value is undefined.

isOrigSigned

public boolean isOrigSigned(int c)

Returns true if the data read was originally signed in the specified component, false if not. This method always returns false since PPM data is always unsigned.

Overrides:

isOrigSigned in class ImgReaderRAWSlice

Parameters:

c - The index of the component, from 0 to N-1.

Returns:

always false, since PPM data is always unsigned.