com.sun.media.imageioimpl.plugins.jpeg2000

Class J2KImageWriteParamJava

java.lang.Object

javax.imageio.IIOParam

javax.imageio.ImageWriteParam

com.sun.media.imageioimpl.plugins.jpeg2000.J2KImageWriteParamJava

public class J2KImageWriteParamJava
extends ImageWriteParam

A subclass of ImageWriteParam for writing images in the JPEG 2000 format.

JPEG 2000 plugin supports to losslessly or lossy compress gray-scale, RGB, and RGBA images with byte, unsigned short or short data type. It also supports losslessly compress bilevel, and 8-bit indexed. The result data is in the format of JP2 (JPEG 2000 Part 1 or baseline format).

Many encoding parameters for JPEG 2000 can be tile-component specific. These parameters are marked as Yes in the column TC_SPEC in the following parameter table. They must be provided according to the pattern: [<tile-component idx>] <param> (repeated as many time as needed), where <tile-component idx> respect the following policy according to the degree of priority:

(1) t<idx> c<idx> : Tile-component specification.

(2) t<idx> : Tile specification.

(3) c<idx> : Component specification.

(4) <void> : Default specification.

Where the priorities of the specifications are: (1) > (2) > (3) > (4), (">" means "overrides") <idx>: "," separates indexes, "-" separates bounds of indexes list. (for example, 0,2-4 means indexes 0,2,3 and 4).

The parameters for encoding JPEG 2000 are listed in the following table: *

JPEG 2000 Plugin Decoding Parameters

Parameter Name	Description	TC_SPEC
encodingRate	The bitrate in bits-per-pixel for encoding. Should be set when lossy compression scheme is used. With the default value Double.MAX_VALUE, a lossless compression will be done.	No
lossless	Indicates using the loseless scheme or not. It is equivalent to use reversible quantization and 5x3 integer wavelet filters. The default is true.	No
componentTransformation	Specifies to utilize the component transformation on some tiles. If the wavelet transform is reversible (w5x3 filter), the Reversible Component Transformation (RCT) is applied. If not reversible (w9x7 filter), the Irreversible Component Transformation (ICT) is used.	Yes, Tile_Specific
filters	Specifies which wavelet filters to use for the specified tile-components. JPEG 2000 part I only supports w5x3 and w9x7 filters.	Yes
decompositionLevel	Specifies the wavelet decomposition levels to apply to the image. If it is 0, no wavelet transform is performed, in which case the original image data will be sent to the encoder and an example is the binary data. All components and all tiles have the same number of decomposition levels. The default value is 5.	No
guardBits	The number of bits used for each tile-component in the quantizer to avoid overflow. It takes values in the range 0 through 7. The default value is 2.	Yes
quantizationStep	This parameter specifies the base normalized quantization step size for the tiles/components. It is normalized to a dynamic range of 1 in the image domain. This parameter is ignored in reversible coding. The default value is 0.0078125.	Yes
quantizationType	Specifies which quantization type to use for specified tiles/components. Not specified for lossless compression. By default, the quantization step size is "expounded". Supported quantization types specification are : "reversible" (no quantization), "derived" (derived quantization step size) and "expounded".	Yes
codeBlockSize	Specifies the maximum code-block size to use for tile-component. The maximum width and height is 1024, however the block size (i.e. width x height) must not exceed 4096. The minimum width and height is 4. The default values are (64, 64).	Yes
progressionType	Specifies which type of progression should be used when generating the codestream. The format is [<tile index>] res|layer|res-pos|pos-comp|comp-pos [res_start comp_start layer_end res_end comp_end prog] [[res_start comp_start layer_end res_end comp_end prog]...] [[<tile-component idx]...]. The value "res" generates a resolution progressive codestream with the number of layers specified by "layers" parameter. The value "layer" generates a layer progressive codestream with multiple layers. In any case, the rate-allocation algorithm optimizes for best quality in each layer. The quality measure is mean squared error (MSE) or a weighted version of it (WMSE). If no progression type is specified or imposed by other parameters, the default value is "layer". It is also possible to describe progression order changes. In this case, "res_start" is the index (from 0) of the first resolution level, "comp_start" is the index (from 0) of the first component, "layer_end" is the index (from 0) of the first layer not included, "res_end" is the index (from 0) of the first resolution level not included, "comp_end" is index (from 0) of the first component not included and "prog" is the progression type to be used for the rest of the tile/image. Several progression order changes can be specified, one after the other.	Yes
packPacketHeaderInTile	Indicates that the packet headers are packed in the tiles' headers. The default is false.	No
packPacketHeaderInMain	Indicates that the packet headers are packed in the main header. The default is false.	No
packetPerTilePart	Specifies the maximum number of packets to be put into one tile-part. Zero means putting all packets in the first tile-part of each tile.	No
ROIs	Specifies ROIs shape and location. The component index specifies which components contain the ROI. If this parameter is used, the codestream is layer progressive by default unless it is overridden by the progressionType. A rectanglar or circular ROI can be specified in the format: [<component idx>] R <left> <top> <width> <height> or [<component idx>] C <center x> <center y> <radius>. An arbitrary shape can be assigned by [<component idx>] A <PGM file>	Yes, component-specified
startLevelROI	This parameter defines the lowest resolution levels to belong to the ROI. By doing this, it is possible to avoid getting information for the ROI at an early stage of transmission. startLevelROI = 0 means the lowest resolution level belongs to the ROI, 1 means the second lowest etc. The default values, -1, deactivates this parameter.	No
alignROI	By specifying this parameter, the ROI mask will be limited to covering only entire code-blocks. The ROI coding can then be performed without any actual scaling of the coefficients but by instead scaling the distortion estimates.	No
bypass	Uses the lazy coding mode with the entropy coder. This will bypass the MQ coder for some of the coding passes, where the distribution is often close to uniform. Since the MQ codeword will be terminated at least once per lazy pass, it is important to use an efficient termination algorithm, methodForMQTermination. true enables, and false disables it. The default value is false.	Yes
resetMQ	If this is enabled the probability estimates of the MQ coder are reset after each arithmetically coded (i.e. non-lazy) coding pass. true enables, and false disables it. The default value is false.	Yes
terminateOnByte	If this is enabled the codeword (raw or MQ) is terminated on a byte boundary after each coding pass. In this case it is important to use an efficient termination algorithm, "methodForMQTermination". true enables, and false disables it. The default value is false.	Yes
causalCXInfo	Uses vertically stripe causal context formation. If this is enabled the context formation process in one stripe is independant of the next stripe (i.e. the one below it). true enables, and false disables it. The default value is false.	Yes
codeSegSymbol	Inserts an error resilience segmentation symbol in the MQ codeword at the end of each bit-plane (cleanup pass). Decoders can use this information to detect and conceal errors. true enables, and false disables it. The default value is false.	Yes
methodForMQTermination	Specifies the algorithm used to terminate the MQ codeword. The most efficient one is "near_opt", which delivers a codeword which in almost all cases is the shortest possible. The "easy" is a simpler algorithm that delivers a codeword length that is close to the previous one (in average 1 bit longer). The "predict" is almost the same as the "easy" but it leaves error resilient information on the spare least significant bits (in average 3.5 bits), which can be used by a decoder to detect errors. The "full" algorithm performs a full flush of the MQ coder and is highly inefficient. It is important to use a good termination policy since the MQ codeword can be terminated quite often, specially if the "bypass" or "terminateOnByte" parameters are enabled (in the normal case it would be terminated once per code-block, while "terminateOnByte" is specified it will be done almost 3 times per bit-plane in each code-block). The default value is "near_opt".	Yes
methodForMQLengthCalc	Specifies the algorithm to use in calculating the necessary MQ length for each decoding pass. The best one is "near_opt", which performs a rather sophisticated calculation and provides the best results. The "lazy_good" and "lazy" are very simple algorithms that provide rather conservative results. "lazy_good" performs slightly better. Please use the default unless the experiments show the benefits of different length calculation algorithms. The default value is "near_opt".	Yes
precinctPartition	Specifies precinct partition dimensions for tiles/components. They are stored from those applied to the highest resolution to those applied to the remaining resolutions in decreasing order. If less values than the number of decomposition levels are specified, then the last two values are used for the remaining resolutions.	Yes
layers	Explicitly specifies the codestream layer formation parameters. The rate (double) parameter specifies the bitrate to which the first layer should be optimized. The layers (int) parameter, if present, specifies the number of extra layers that should be added for scalability. These extra layers are not optimized. Any extra rate and layers parameters add more layers, in the same way. An additional layer is always added at the end, which is optimized to the overall target bitrate of the bit stream. Any layers (optimized or not) whose target bitrate is higher that the overall target bitrate are silently ignored. The bitrates of the extra layers that are added through the layers parameter are approximately log-spaced between the other target bitrates. If several (rate, layers) constructs appear the rate parameters must appear in increasing order. The rate allocation algorithm ensures that all coded layers have a minimal reasonable size, if not these layers are silently ignored. Default: 0.015 +20 2.0 +10.	No
SOP	Specifies whether start of packet (SOP) markers should be used. true enables, false disables it. The default value is false.	Yes
EPH	Specifies whether end of packet header (EPH) markers should be used. true enables, false disables it. The default value is false.	Yes

Field Summary

Fields inherited from class javax.imageio.ImageWriteParam

canOffsetTiles, canWriteCompressed, canWriteProgressive, canWriteTiles, compressionMode, compressionQuality, compressionType, compressionTypes, locale, MODE_COPY_FROM_METADATA, MODE_DEFAULT, MODE_DISABLED, MODE_EXPLICIT, preferredTileSizes, progressiveMode, tileGridXOffset, tileGridYOffset, tileHeight, tileWidth, tilingMode, tilingSet

Fields inherited from class javax.imageio.IIOParam

controller, defaultController, destinationOffset, destinationType, sourceBands, sourceRegion, sourceXSubsampling, sourceYSubsampling, subsamplingXOffset, subsamplingYOffset

Constructor Summary

Constructors

Constructor and Description
J2KImageWriteParamJava() Constructs a J2KImageWriteParamJava object with default values for all parameters.
J2KImageWriteParamJava(IIOImage image, ImageWriteParam param) Constructor to set locales.
J2KImageWriteParamJava(Raster raster) Constructs a J2KImageWriteParamJava object with default values for all parameters.
J2KImageWriteParamJava(RenderedImage imgsrc) Constructs a J2KImageWriteParamJava object with default values for all parameters.
J2KImageWriteParamJava(RenderedImage imgsrc, Locale locale) Constructor to set locales.

Method Summary

Modifier and Type	Method and Description
boolean	getAlignROI() Gets alignROI
StringSpec	getBypass() Gets bypass
StringSpec	getCausalCXInfo() Gets causalCXInfo
CBlkSizeSpec	getCodeBlockSize() Gets codeBlockSize
StringSpec	getCodeSegSymbol() Gets codeSegSymbol
ForwCompTransfSpec	getComponentTransformation() Gets componentTransformation
IntegerSpec	getDecompositionLevel() Gets decompositionLevel
double	getEncodingRate() Gets encodingRate
StringSpec	getEPH() Gets EPH
AnWTFilterSpec	getFilters() Gets filters
GuardBitsSpec	getGuardBits() Gets guardBits
String	getLayers() Gets layers
boolean	getLossless() Gets encodingRate
StringSpec	getMethodForMQLengthCalc() Gets methodForMQLengthCalc
StringSpec	getMethodForMQTermination() Gets methodForMQTermination
int	getMinX() Gets minX
int	getMinY() Gets minY
int	getNumComponents() Gets the number of components
int	getNumTiles() Gets the number of tiles
int	getPacketPerTilePart() Gets packetPerTilePart
boolean	getPackPacketHeaderInMain() Gets packPacketHeaderInMain
boolean	getPackPacketHeaderInTile() Gets packPacketHeaderInTile
PrecinctSizeSpec	getPrecinctPartition() Gets precinctPartition
String	getProgressionName() Gets progressionType
ProgressionSpec	getProgressionType() Gets progressionType
QuantStepSizeSpec	getQuantizationStep() Gets quantizationStep
QuantTypeSpec	getQuantizationType() Gets quantizationType
StringSpec	getResetMQ() Gets resetMQ
MaxShiftSpec	getROIs() Gets ROIs
StringSpec	getSOP() Gets SOP
int	getStartLevelROI() Gets startLevel
StringSpec	getTerminateOnByte() Gets terminateOnByte
void	setAlignROI(boolean align) Sets alignROI
void	setBypass(String values) Sets bypass
void	setCausalCXInfo(String values) Sets causalCXInfo
void	setCodeBlockSize(String values) Sets codeBlockSize
void	setCodeSegSymbol(String values) Sets codeSegSymbol
void	setComponentTransformation(String values) Sets componentTransformation
void	setDecompositionLevel(String values) Sets decompositionLevel
void	setEncodingRate(double rate) Sets encodingRate
void	setEPH(String values) Sets EPH
void	setFilters(String values) Sets filters
void	setGuardBits(String values) Sets guardBits
void	setLayers(String value) Sets the layers
void	setLossless(boolean lossless) Sets lossless
void	setMethodForMQLengthCalc(String values) Sets methodForMQLengthCalc
void	setMethodForMQTermination(String values) Sets methodForMQTermination
void	setMinX(int minX) Sets minX
void	setMinY(int minY) Sets minY
void	setPacketPerTilePart(int packetPerTilePart) Sets packetPerTilePart
void	setPackPacketHeaderInMain(boolean packPacketHeaderInMain) Sets packPacketHeaderInMain
void	setPackPacketHeaderInTile(boolean packPacketHeaderInTile) Sets packPacketHeaderInTile
void	setPrecinctPartition(String values) Sets precinctPartition
void	setProgressionName(String values) Sets progressionName
void	setProgressionType(LayersInfo lyrs, String values) Sets progressionType
void	setQuantizationStep(String values) Sets quantizationStep
void	setQuantizationType(String values) Sets quantizationType
void	setResetMQ(String values) Sets resetMQ
void	setROIs(String values) Sets ROIs
void	setSOP(String values) Sets SOP
void	setSourceBands(int[] bands) Override the method setSourceBands in the super class.
void	setSourceSubsampling(int sx, int sy, int xOff, int yOff) Override the method setSourceSubsampling in the super class.
void	setStartLevelROI(int value) Sets the startLevelROI
void	setTerminateOnByte(String values) Sets terminateOnByte
void	setTiling(int tw, int th, int xOff, int yOff) Override the method setTiling in the super class.

Methods inherited from class javax.imageio.ImageWriteParam

canOffsetTiles, canWriteCompressed, canWriteProgressive, canWriteTiles, getBitRate, getCompressionMode, getCompressionQuality, getCompressionQualityDescriptions, getCompressionQualityValues, getCompressionType, getCompressionTypes, getLocale, getLocalizedCompressionTypeName, getPreferredTileSizes, getProgressiveMode, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileWidth, getTilingMode, isCompressionLossless, setCompressionMode, setCompressionQuality, setCompressionType, setProgressiveMode, setTilingMode, unsetCompression, unsetTiling

Methods inherited from class javax.imageio.IIOParam

activateController, getController, getDefaultController, getDestinationOffset, getDestinationType, getSourceBands, getSourceRegion, getSourceXSubsampling, getSourceYSubsampling, getSubsamplingXOffset, getSubsamplingYOffset, hasController, setController, setDestinationOffset, setDestinationType, setSourceRegion

Methods inherited from class java.lang.Object

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

Constructor Detail

J2KImageWriteParamJava

public J2KImageWriteParamJava(RenderedImage imgsrc,
                              Locale locale)

Constructor to set locales.

J2KImageWriteParamJava

public J2KImageWriteParamJava(IIOImage image,
                              ImageWriteParam param)

Constructor to set locales.

J2KImageWriteParamJava

public J2KImageWriteParamJava()

Constructs a J2KImageWriteParamJava object with default values for all parameters.

J2KImageWriteParamJava

public J2KImageWriteParamJava(RenderedImage imgsrc)

Constructs a J2KImageWriteParamJava object with default values for all parameters.

J2KImageWriteParamJava

public J2KImageWriteParamJava(Raster raster)

Constructs a J2KImageWriteParamJava object with default values for all parameters.

Method Detail

setEncodingRate

public void setEncodingRate(double rate)

Sets encodingRate

getEncodingRate

public double getEncodingRate()

Gets encodingRate

setLossless

public void setLossless(boolean lossless)

Sets lossless

getLossless

public boolean getLossless()

Gets encodingRate

setPacketPerTilePart

public void setPacketPerTilePart(int packetPerTilePart)

Sets packetPerTilePart

getPacketPerTilePart

public int getPacketPerTilePart()

Gets packetPerTilePart

setPackPacketHeaderInTile

public void setPackPacketHeaderInTile(boolean packPacketHeaderInTile)

Sets packPacketHeaderInTile

getPackPacketHeaderInTile

public boolean getPackPacketHeaderInTile()

Gets packPacketHeaderInTile

setPackPacketHeaderInMain

public void setPackPacketHeaderInMain(boolean packPacketHeaderInMain)

Sets packPacketHeaderInMain

getPackPacketHeaderInMain

public boolean getPackPacketHeaderInMain()

Gets packPacketHeaderInMain

setAlignROI

public void setAlignROI(boolean align)

Sets alignROI

getAlignROI

public boolean getAlignROI()

Gets alignROI

setROIs

public void setROIs(String values)

Sets ROIs

getROIs

public MaxShiftSpec getROIs()

Gets ROIs

setQuantizationType

public void setQuantizationType(String values)

Sets quantizationType

getQuantizationType

public QuantTypeSpec getQuantizationType()

Gets quantizationType

setQuantizationStep

public void setQuantizationStep(String values)

Sets quantizationStep

getQuantizationStep

public QuantStepSizeSpec getQuantizationStep()

Gets quantizationStep

setGuardBits

public void setGuardBits(String values)

Sets guardBits

getGuardBits

public GuardBitsSpec getGuardBits()

Gets guardBits

setFilters

public void setFilters(String values)

Sets filters

getFilters

public AnWTFilterSpec getFilters()

Gets filters

setDecompositionLevel

public void setDecompositionLevel(String values)

Sets decompositionLevel

getDecompositionLevel

public IntegerSpec getDecompositionLevel()

Gets decompositionLevel

setComponentTransformation

public void setComponentTransformation(String values)

Sets componentTransformation

getComponentTransformation

public ForwCompTransfSpec getComponentTransformation()

Gets componentTransformation

setMethodForMQLengthCalc

public void setMethodForMQLengthCalc(String values)

Sets methodForMQLengthCalc

getMethodForMQLengthCalc

public StringSpec getMethodForMQLengthCalc()

Gets methodForMQLengthCalc

setMethodForMQTermination

public void setMethodForMQTermination(String values)

Sets methodForMQTermination

getMethodForMQTermination

public StringSpec getMethodForMQTermination()

Gets methodForMQTermination

setCodeSegSymbol

public void setCodeSegSymbol(String values)

Sets codeSegSymbol

getCodeSegSymbol

public StringSpec getCodeSegSymbol()

Gets codeSegSymbol

setCausalCXInfo

public void setCausalCXInfo(String values)

Sets causalCXInfo

getCausalCXInfo

public StringSpec getCausalCXInfo()

Gets causalCXInfo

setTerminateOnByte

public void setTerminateOnByte(String values)

Sets terminateOnByte

getTerminateOnByte

public StringSpec getTerminateOnByte()

Gets terminateOnByte

setResetMQ

public void setResetMQ(String values)

Sets resetMQ

getResetMQ

public StringSpec getResetMQ()

Gets resetMQ

setBypass

public void setBypass(String values)

Sets bypass

getBypass

public StringSpec getBypass()

Gets bypass

setCodeBlockSize

public void setCodeBlockSize(String values)

Sets codeBlockSize

getCodeBlockSize

public CBlkSizeSpec getCodeBlockSize()

Gets codeBlockSize

setPrecinctPartition

public void setPrecinctPartition(String values)

Sets precinctPartition

getPrecinctPartition

public PrecinctSizeSpec getPrecinctPartition()

Gets precinctPartition

setSOP

public void setSOP(String values)

Sets SOP

getSOP

public StringSpec getSOP()

Gets SOP

setEPH

public void setEPH(String values)

Sets EPH

getEPH

public StringSpec getEPH()

Gets EPH

setProgressionName

public void setProgressionName(String values)

Sets progressionName

getProgressionName

public String getProgressionName()

Gets progressionType

setProgressionType

public void setProgressionType(LayersInfo lyrs,
                               String values)

Sets progressionType

getProgressionType

public ProgressionSpec getProgressionType()

Gets progressionType

setStartLevelROI

public void setStartLevelROI(int value)

Sets the startLevelROI

getStartLevelROI

public int getStartLevelROI()

Gets startLevel

setLayers

public void setLayers(String value)

Sets the layers

getLayers

public String getLayers()

Gets layers

setMinX

public void setMinX(int minX)

Sets minX

getMinX

public int getMinX()

Gets minX

setMinY

public void setMinY(int minY)

Sets minY

getMinY

public int getMinY()

Gets minY

getNumTiles

public int getNumTiles()

Gets the number of tiles

getNumComponents

public int getNumComponents()

Gets the number of components

setSourceBands

public void setSourceBands(int[] bands)

Override the method setSourceBands in the super class. This method should be called before any tile-specific parameter setting method to be called.

Overrides:

setSourceBands in class IIOParam

setTiling

public void setTiling(int tw,
                      int th,
                      int xOff,
                      int yOff)

Override the method setTiling in the super class. This method should be called before any tile-specific parameter setting method to be called.

Overrides:

setTiling in class ImageWriteParam

setSourceSubsampling

public void setSourceSubsampling(int sx,
                                 int sy,
                                 int xOff,
                                 int yOff)

Override the method setSourceSubsampling in the super class. This method should be called before any tile-specific parameter setting method to be called.

Overrides:

setSourceSubsampling in class IIOParam