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Summary: 

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Method

Detail: 

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Method

org.libjpegturbo.turbojpeg

Class TJTransform

java.lang.Object

java.awt.geom.RectangularShape

java.awt.geom.Rectangle2D

java.awt.Rectangle

org.libjpegturbo.turbojpeg.TJTransform

All Implemented Interfaces:

java.awt.Shape, java.io.Serializable, java.lang.Cloneable

public class TJTransform

extends java.awt.Rectangle

Lossless transform parameters

See Also:
Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Rectangle2D

java.awt.geom.Rectangle2D.Double, java.awt.geom.Rectangle2D.Float

Field Summary

Fields 

Modifier and Type

Field and Description

TJCustomFilter

cf

Custom filter instance

static int

NUMOP

The number of lossless transform operations

int

op

Transform operation (one of OP_*)

static int

OP_HFLIP

Flip (mirror) image horizontally.

static int

OP_NONE

Do not transform the position of the image pixels.

static int

OP_ROT180

Rotate image 180 degrees.

static int

OP_ROT270

Rotate image counter-clockwise by 90 degrees.

static int

OP_ROT90

Rotate image clockwise by 90 degrees.

static int

OP_TRANSPOSE

Transpose image (flip/mirror along upper left to lower right axis).

static int

OP_TRANSVERSE

Transverse transpose image (flip/mirror along upper right to lower left

 axis).

static int

OP_VFLIP

Flip (mirror) image vertically.

static int

OPT_COPYNONE

This option will prevent TJTransformer.transform() from copying any extra markers (including EXIF

 and ICC profile data) from the source image to the output image.

static int

OPT_CROP

This option will enable lossless cropping.

static int

OPT_GRAY

This option will discard the color data in the input image and produce

 a grayscale output image.

static int

OPT_NOOUTPUT

This option will prevent TJTransformer.transform() from outputting a JPEG image for this

 particular transform.

static int

OPT_PERFECT

This option will cause TJTransformer.transform() to throw an exception if the transform is not

 perfect.

static int

OPT_PROGRESSIVE

This option will enable progressive entropy coding in the output image

 generated by this particular transform.

static int

OPT_TRIM

This option will discard any partial MCU blocks that cannot be

 transformed.

int

options

Transform options (bitwise OR of one or more of OPT_*)

Fields inherited from class java.awt.Rectangle

height, width, x, y

Fields inherited from class java.awt.geom.Rectangle2D

OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP

Constructor Summary

Constructors 

Constructor and Description

TJTransform()

Create a new lossless transform instance.

TJTransform(int x,

           int y,

           int w,

           int h,

           int op,

           int options,

           TJCustomFilter cf)

Create a new lossless transform instance with the given parameters.

TJTransform(java.awt.Rectangle r,

           int op,

           int options,

           TJCustomFilter cf)

Create a new lossless transform instance with the given parameters.

Method Summary

Methods inherited from class java.awt.Rectangle

add, add, add, contains, contains, contains, contains, createIntersection, createUnion, equals, getBounds, getBounds2D, getHeight, getLocation, getSize, getWidth, getX, getY, grow, inside, intersection, intersects, isEmpty, move, outcode, reshape, resize, setBounds, setBounds, setLocation, setLocation, setRect, setSize, setSize, toString, translate, union

Methods inherited from class java.awt.geom.Rectangle2D

add, add, add, contains, contains, getPathIterator, getPathIterator, hashCode, intersect, intersects, intersectsLine, intersectsLine, outcode, setFrame, setRect, union

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getCenterX, getCenterY, getFrame, getMaxX, getMaxY, getMinX, getMinY, intersects, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.awt.Shape

contains, contains, contains, contains, getPathIterator, getPathIterator, intersects, intersects

Field Detail

NUMOP

public static final int NUMOP

The number of lossless transform operations

See Also:
Constant Field Values

OP_NONE

public static final int OP_NONE

Do not transform the position of the image pixels.

See Also:
Constant Field Values

OP_HFLIP

public static final int OP_HFLIP

Flip (mirror) image horizontally.  This transform is imperfect if there

 are any partial MCU blocks on the right edge.

See Also:
OPT_PERFECT, 

Constant Field Values

OP_VFLIP

public static final int OP_VFLIP

Flip (mirror) image vertically.  This transform is imperfect if there are

 any partial MCU blocks on the bottom edge.

See Also:
OPT_PERFECT, 

Constant Field Values

OP_TRANSPOSE

public static final int OP_TRANSPOSE

Transpose image (flip/mirror along upper left to lower right axis).  This

 transform is always perfect.

See Also:
OPT_PERFECT, 

Constant Field Values

OP_TRANSVERSE

public static final int OP_TRANSVERSE

Transverse transpose image (flip/mirror along upper right to lower left

 axis).  This transform is imperfect if there are any partial MCU blocks in

 the image.

See Also:
OPT_PERFECT, 

Constant Field Values

OP_ROT90

public static final int OP_ROT90

Rotate image clockwise by 90 degrees.  This transform is imperfect if

 there are any partial MCU blocks on the bottom edge.

See Also:
OPT_PERFECT, 

Constant Field Values

OP_ROT180

public static final int OP_ROT180

Rotate image 180 degrees.  This transform is imperfect if there are any

 partial MCU blocks in the image.

See Also:
OPT_PERFECT, 

Constant Field Values

OP_ROT270

public static final int OP_ROT270

Rotate image counter-clockwise by 90 degrees.  This transform is imperfect

 if there are any partial MCU blocks on the right edge.

See Also:
OPT_PERFECT, 

Constant Field Values

OPT_PERFECT

public static final int OPT_PERFECT

This option will cause TJTransformer.transform() to throw an exception if the transform is not

 perfect.  Lossless transforms operate on MCU blocks, whose size depends on

 the level of chrominance subsampling used.  If the image's width or height

 is not evenly divisible by the MCU block size (see TJ.getMCUWidth(int)

 and TJ.getMCUHeight(int)), then there will be partial MCU blocks on the

 right and/or bottom edges.   It is not possible to move these partial MCU

 blocks to the top or left of the image, so any transform that would

 require that is "imperfect."  If this option is not specified, then any

 partial MCU blocks that cannot be transformed will be left in place, which

 will create odd-looking strips on the right or bottom edge of the image.

See Also:
Constant Field Values

OPT_TRIM

public static final int OPT_TRIM

This option will discard any partial MCU blocks that cannot be

 transformed.

See Also:
Constant Field Values

OPT_CROP

public static final int OPT_CROP

This option will enable lossless cropping.

See Also:
Constant Field Values

OPT_GRAY

public static final int OPT_GRAY

This option will discard the color data in the input image and produce

 a grayscale output image.

See Also:
Constant Field Values

OPT_NOOUTPUT

public static final int OPT_NOOUTPUT

This option will prevent TJTransformer.transform() from outputting a JPEG image for this

 particular transform.  This can be used in conjunction with a custom

 filter to capture the transformed DCT coefficients without transcoding

 them.

See Also:
Constant Field Values

OPT_PROGRESSIVE

public static final int OPT_PROGRESSIVE

This option will enable progressive entropy coding in the output image

 generated by this particular transform.  Progressive entropy coding will

 generally improve compression relative to baseline entropy coding (the

 default), but it will reduce compression and decompression performance

 considerably.

See Also:
Constant Field Values

OPT_COPYNONE

public static final int OPT_COPYNONE

This option will prevent TJTransformer.transform() from copying any extra markers (including EXIF

 and ICC profile data) from the source image to the output image.

See Also:
Constant Field Values

op

public int op

Transform operation (one of OP_*)

options

public int options

Transform options (bitwise OR of one or more of OPT_*)

cf

public TJCustomFilter cf

Custom filter instance

Constructor Detail

TJTransform

public TJTransform()

Create a new lossless transform instance.

TJTransform

public TJTransform(int x,

           int y,

           int w,

           int h,

           int op,

           int options,

           TJCustomFilter cf)

Create a new lossless transform instance with the given parameters.

Parameters:
x - the left boundary of the cropping region.  This must be evenly

 divisible by the MCU block width (see TJ.getMCUWidth(int))
y - the upper boundary of the cropping region.  This must be evenly

 divisible by the MCU block height (see TJ.getMCUHeight(int))
w - the width of the cropping region.  Setting this to 0 is the

 equivalent of setting it to (width of the source JPEG image -

 x).
h - the height of the cropping region.  Setting this to 0 is the

 equivalent of setting it to (height of the source JPEG image -

 y).
op - one of the transform operations (OP_*)
options - the bitwise OR of one or more of the transform options

 (OPT_*)
cf - an instance of an object that implements the TJCustomFilter interface, or null if no custom filter is needed

TJTransform

public TJTransform(java.awt.Rectangle r,

           int op,

           int options,

           TJCustomFilter cf)

Create a new lossless transform instance with the given parameters.

Parameters:
r - a Rectangle instance that specifies the cropping

 region.  See TJTransform(int, int, int, int, int, int, TJCustomFilter) for more

 detail.
op - one of the transform operations (OP_*)
options - the bitwise OR of one or more of the transform options

 (OPT_*)
cf - an instance of an object that implements the TJCustomFilter interface, or null if no custom filter is needed

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Summary: 

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