public class ComponentSampleModel extends SampleModel
DataBuffer.TYPE_BYTE
,
DataBuffer.TYPE_USHORT
, or DataBuffer.TYPE_INT
,
respectively), data for which each sample is a signed integral number
which can be stored in 16 bits (using DataBuffer.TYPE_SHORT
),
or data for which each sample is a signed float or double quantity
(using DataBuffer.TYPE_FLOAT
or
DataBuffer.TYPE_DOUBLE
, respectively).
All samples of a given ComponentSampleModel
are stored with the same precision. All strides and offsets must be
non-negative. This class supports
TYPE_BYTE
,
TYPE_USHORT
,
TYPE_SHORT
,
TYPE_INT
,
TYPE_FLOAT
,
TYPE_DOUBLE
,PixelInterleavedSampleModel
,
BandedSampleModel
Modifier and Type | Field and Description |
---|---|
protected int[] |
bandOffsets
Offsets for all bands in data array elements.
|
protected int[] |
bankIndices
Index for each bank storing a band of image data.
|
protected int |
numBands
The number of bands in this
ComponentSampleModel . |
protected int |
numBanks
The number of banks in this
ComponentSampleModel . |
protected int |
pixelStride
Pixel stride (in data array elements) of the region of image
data described by this ComponentSampleModel.
|
protected int |
scanlineStride
Line stride (in data array elements) of the region of image
data described by this ComponentSampleModel.
|
dataType, height, width
Constructor and Description |
---|
ComponentSampleModel(int dataType,
int w,
int h,
int pixelStride,
int scanlineStride,
int[] bandOffsets)
Constructs a ComponentSampleModel with the specified parameters.
|
ComponentSampleModel(int dataType,
int w,
int h,
int pixelStride,
int scanlineStride,
int[] bankIndices,
int[] bandOffsets)
Constructs a ComponentSampleModel with the specified parameters.
|
Modifier and Type | Method and Description |
---|---|
SampleModel |
createCompatibleSampleModel(int w,
int h)
Creates a new
ComponentSampleModel with the specified
width and height. |
DataBuffer |
createDataBuffer()
Creates a
DataBuffer that corresponds to this
ComponentSampleModel . |
SampleModel |
createSubsetSampleModel(int[] bands)
Creates a new ComponentSampleModel with a subset of the bands
of this ComponentSampleModel.
|
boolean |
equals(Object o)
Indicates whether some other object is "equal to" this one.
|
int[] |
getBandOffsets()
Returns the band offset for all bands.
|
int[] |
getBankIndices()
Returns the bank indices for all bands.
|
Object |
getDataElements(int x,
int y,
Object obj,
DataBuffer data)
Returns data for a single pixel in a primitive array of type
TransferType . |
int |
getNumDataElements()
Returns the number of data elements needed to transfer a pixel
with the
getDataElements(int, int, Object, DataBuffer) and
setDataElements(int, int, Object, DataBuffer)
methods. |
int |
getOffset(int x,
int y)
Gets the offset for the first band of pixel (x,y).
|
int |
getOffset(int x,
int y,
int b)
Gets the offset for band b of pixel (x,y).
|
int[] |
getPixel(int x,
int y,
int[] iArray,
DataBuffer data)
Returns all samples for the specified pixel in an int array,
one sample per array element.
|
int[] |
getPixels(int x,
int y,
int w,
int h,
int[] iArray,
DataBuffer data)
Returns all samples for the specified rectangle of pixels in
an int array, one sample per array element.
|
int |
getPixelStride()
Returns the pixel stride of this ComponentSampleModel.
|
int |
getSample(int x,
int y,
int b,
DataBuffer data)
Returns as int the sample in a specified band for the pixel
located at (x,y).
|
double |
getSampleDouble(int x,
int y,
int b,
DataBuffer data)
Returns the sample in a specified band
for a pixel located at (x,y) as a double.
|
float |
getSampleFloat(int x,
int y,
int b,
DataBuffer data)
Returns the sample in a specified band
for the pixel located at (x,y) as a float.
|
int[] |
getSamples(int x,
int y,
int w,
int h,
int b,
int[] iArray,
DataBuffer data)
Returns the samples in a specified band for the specified rectangle
of pixels in an int array, one sample per data array element.
|
int[] |
getSampleSize()
Returns the number of bits per sample for all bands.
|
int |
getSampleSize(int band)
Returns the number of bits per sample for the specified band.
|
int |
getScanlineStride()
Returns the scanline stride of this ComponentSampleModel.
|
int |
hashCode()
Returns a hash code value for the object.
|
void |
setDataElements(int x,
int y,
Object obj,
DataBuffer data)
Sets the data for a single pixel in the specified
DataBuffer from a primitive array of type
TransferType . |
void |
setPixel(int x,
int y,
int[] iArray,
DataBuffer data)
Sets a pixel in the
DataBuffer using an int array of
samples for input. |
void |
setPixels(int x,
int y,
int w,
int h,
int[] iArray,
DataBuffer data)
Sets all samples for a rectangle of pixels from an int array containing
one sample per array element.
|
void |
setSample(int x,
int y,
int b,
double s,
DataBuffer data)
Sets a sample in the specified band for the pixel located at (x,y)
in the
DataBuffer using a double for input. |
void |
setSample(int x,
int y,
int b,
float s,
DataBuffer data)
Sets a sample in the specified band for the pixel located at (x,y)
in the
DataBuffer using a float for input. |
void |
setSample(int x,
int y,
int b,
int s,
DataBuffer data)
Sets a sample in the specified band for the pixel located at (x,y)
in the
DataBuffer using an int for input. |
void |
setSamples(int x,
int y,
int w,
int h,
int b,
int[] iArray,
DataBuffer data)
Sets the samples in the specified band for the specified rectangle
of pixels from an int array containing one sample per data array element.
|
getDataElements, getDataType, getHeight, getNumBands, getPixel, getPixel, getPixels, getPixels, getSamples, getSamples, getTransferType, getWidth, setDataElements, setPixel, setPixel, setPixels, setPixels, setSamples, setSamples
protected int[] bandOffsets
protected int[] bankIndices
protected int numBands
ComponentSampleModel
.protected int numBanks
ComponentSampleModel
.protected int scanlineStride
protected int pixelStride
public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride, int[] bandOffsets)
dataType
- the data type for storing samplesw
- the width (in pixels) of the region of
image data describedh
- the height (in pixels) of the region of
image data describedpixelStride
- the pixel stride of the region of image
data describedscanlineStride
- the line stride of the region of image
data describedbandOffsets
- the offsets of all bandsIllegalArgumentException
- if w
or
h
is not greater than 0IllegalArgumentException
- if pixelStride
is less than 0IllegalArgumentException
- if scanlineStride
is less than 0IllegalArgumentException
- if numBands
is less than 1IllegalArgumentException
- if the product of w
and h
is greater than
Integer.MAX_VALUE
IllegalArgumentException
- if dataType
is not
one of the supported data typespublic ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride, int[] bankIndices, int[] bandOffsets)
dataType
- the data type for storing samplesw
- the width (in pixels) of the region of
image data describedh
- the height (in pixels) of the region of
image data describedpixelStride
- the pixel stride of the region of image
data describedscanlineStride
- The line stride of the region of image
data describedbankIndices
- the bank indices of all bandsbandOffsets
- the band offsets of all bandsIllegalArgumentException
- if w
or
h
is not greater than 0IllegalArgumentException
- if pixelStride
is less than 0IllegalArgumentException
- if scanlineStride
is less than 0IllegalArgumentException
- if the length of
bankIndices
does not equal the length of
bankOffsets
IllegalArgumentException
- if any of the bank indices
of bandIndices
is less than 0IllegalArgumentException
- if dataType
is not
one of the supported data typespublic SampleModel createCompatibleSampleModel(int w, int h)
ComponentSampleModel
with the specified
width and height. The new SampleModel
will have the same
number of bands, storage data type, interleaving scheme, and
pixel stride as this SampleModel
.createCompatibleSampleModel
in class SampleModel
w
- the width of the resulting SampleModel
h
- the height of the resulting SampleModel
ComponentSampleModel
with the specified sizeIllegalArgumentException
- if w
or
h
is not greater than 0public SampleModel createSubsetSampleModel(int[] bands)
createSubsetSampleModel
in class SampleModel
bands
- a subset of bands from this
ComponentSampleModel
ComponentSampleModel
created with a subset
of bands from this ComponentSampleModel
.public DataBuffer createDataBuffer()
DataBuffer
that corresponds to this
ComponentSampleModel
.
The DataBuffer
object's data type, number of banks,
and size are be consistent with this ComponentSampleModel
.createDataBuffer
in class SampleModel
DataBuffer
whose data type, number of banks
and size are consistent with this
ComponentSampleModel
.public int getOffset(int x, int y)
DataBuffer
data
with a ComponentSampleModel
csm
as
data.getElem(csm.getOffset(x, y));
x
- the X location of the pixely
- the Y location of the pixelpublic int getOffset(int x, int y, int b)
b
can be retrieved from a
DataBuffer
data
with a ComponentSampleModel
csm
as
data.getElem(csm.getOffset(x, y, b));
x
- the X location of the specified pixely
- the Y location of the specified pixelb
- the specified bandpublic final int[] getSampleSize()
getSampleSize
in class SampleModel
public final int getSampleSize(int band)
getSampleSize
in class SampleModel
band
- the specified bandpublic final int[] getBankIndices()
public final int[] getBandOffsets()
public final int getScanlineStride()
ComponentSampleModel
.public final int getPixelStride()
ComponentSampleModel
.public final int getNumDataElements()
getDataElements(int, int, Object, DataBuffer)
and
setDataElements(int, int, Object, DataBuffer)
methods.
For a ComponentSampleModel
, this is identical to the
number of bands.getNumDataElements
in class SampleModel
getDataElements
and
setDataElements
methods.SampleModel.getNumDataElements()
,
SampleModel.getNumBands()
public Object getDataElements(int x, int y, Object obj, DataBuffer data)
TransferType
. For a ComponentSampleModel
,
this is the same as the data type, and samples are returned
one per array element. Generally, obj
should
be passed in as null
, so that the Object
is created automatically and is the right primitive data type.
The following code illustrates transferring data for one pixel from
DataBuffer
db1
, whose storage layout is
described by ComponentSampleModel
csm1
,
to DataBuffer
db2
, whose storage layout
is described by ComponentSampleModel
csm2
.
The transfer is usually more efficient than using
getPixel
and setPixel
.
ComponentSampleModel csm1, csm2; DataBufferInt db1, db2; csm2.setDataElements(x, y, csm1.getDataElements(x, y, null, db1), db2);Using
getDataElements
and setDataElements
to transfer between two DataBuffer/SampleModel
pairs is legitimate if the SampleModel
objects have
the same number of bands, corresponding bands have the same number of
bits per sample, and the TransferType
s are the same.
If obj
is not null
, it should be a
primitive array of type TransferType
.
Otherwise, a ClassCastException
is thrown. An
ArrayIndexOutOfBoundsException
might be thrown if the
coordinates are not in bounds, or if obj
is not
null
and is not large enough to hold
the pixel data.
getDataElements
in class SampleModel
x
- the X coordinate of the pixel locationy
- the Y coordinate of the pixel locationobj
- if non-null
, a primitive array
in which to return the pixel datadata
- the DataBuffer
containing the image dataNullPointerException
- if data is null.ArrayIndexOutOfBoundsException
- if the coordinates are
not in bounds, or if obj is too small to hold the ouput.setDataElements(int, int, Object, DataBuffer)
public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds.getPixel
in class SampleModel
x
- the X coordinate of the pixel locationy
- the Y coordinate of the pixel locationiArray
- If non-null, returns the samples in this arraydata
- The DataBuffer containing the image dataNullPointerException
- if data is null.ArrayIndexOutOfBoundsException
- if the coordinates are
not in bounds, or if iArray is too small to hold the output.setPixel(int, int, int[], DataBuffer)
public int[] getPixels(int x, int y, int w, int h, int[] iArray, DataBuffer data)
ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds.getPixels
in class SampleModel
x
- The X coordinate of the upper left pixel locationy
- The Y coordinate of the upper left pixel locationw
- The width of the pixel rectangleh
- The height of the pixel rectangleiArray
- If non-null, returns the samples in this arraydata
- The DataBuffer containing the image datasetPixels(int, int, int, int, int[], DataBuffer)
public int getSample(int x, int y, int b, DataBuffer data)
ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds.getSample
in class SampleModel
x
- the X coordinate of the pixel locationy
- the Y coordinate of the pixel locationb
- the band to returndata
- the DataBuffer
containing the image datasetSample(int, int, int, int, DataBuffer)
public float getSampleFloat(int x, int y, int b, DataBuffer data)
ArrayIndexOutOfBoundsException
might be
thrown if the coordinates are not in bounds.getSampleFloat
in class SampleModel
x
- The X coordinate of the pixel locationy
- The Y coordinate of the pixel locationb
- The band to returndata
- The DataBuffer containing the image datapublic double getSampleDouble(int x, int y, int b, DataBuffer data)
ArrayIndexOutOfBoundsException
might be
thrown if the coordinates are not in bounds.getSampleDouble
in class SampleModel
x
- The X coordinate of the pixel locationy
- The Y coordinate of the pixel locationb
- The band to returndata
- The DataBuffer containing the image datapublic int[] getSamples(int x, int y, int w, int h, int b, int[] iArray, DataBuffer data)
ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds.getSamples
in class SampleModel
x
- The X coordinate of the upper left pixel locationy
- The Y coordinate of the upper left pixel locationw
- the width of the pixel rectangleh
- the height of the pixel rectangleb
- the band to returniArray
- if non-null
, returns the samples
in this arraydata
- the DataBuffer
containing the image datasetSamples(int, int, int, int, int, int[], DataBuffer)
public void setDataElements(int x, int y, Object obj, DataBuffer data)
DataBuffer
from a primitive array of type
TransferType
. For a ComponentSampleModel
,
this is the same as the data type, and samples are transferred
one per array element.
The following code illustrates transferring data for one pixel from
DataBuffer
db1
, whose storage layout is
described by ComponentSampleModel
csm1
,
to DataBuffer
db2
, whose storage layout
is described by ComponentSampleModel
csm2
.
The transfer is usually more efficient than using
getPixel
and setPixel
.
ComponentSampleModel csm1, csm2; DataBufferInt db1, db2; csm2.setDataElements(x, y, csm1.getDataElements(x, y, null, db1), db2);Using
getDataElements
and setDataElements
to transfer between two DataBuffer/SampleModel
pairs
is legitimate if the SampleModel
objects have
the same number of bands, corresponding bands have the same number of
bits per sample, and the TransferType
s are the same.
A ClassCastException
is thrown if obj
is not
a primitive array of type TransferType
.
An ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds, or if obj
is not large
enough to hold the pixel data.
setDataElements
in class SampleModel
x
- the X coordinate of the pixel locationy
- the Y coordinate of the pixel locationobj
- a primitive array containing pixel datadata
- the DataBuffer containing the image datagetDataElements(int, int, Object, DataBuffer)
public void setPixel(int x, int y, int[] iArray, DataBuffer data)
DataBuffer
using an int array of
samples for input. An ArrayIndexOutOfBoundsException
might be thrown if the coordinates are
not in bounds.setPixel
in class SampleModel
x
- The X coordinate of the pixel locationy
- The Y coordinate of the pixel locationiArray
- The input samples in an int arraydata
- The DataBuffer containing the image datagetPixel(int, int, int[], DataBuffer)
public void setPixels(int x, int y, int w, int h, int[] iArray, DataBuffer data)
ArrayIndexOutOfBoundsException
might be thrown if the
coordinates are not in bounds.setPixels
in class SampleModel
x
- The X coordinate of the upper left pixel locationy
- The Y coordinate of the upper left pixel locationw
- The width of the pixel rectangleh
- The height of the pixel rectangleiArray
- The input samples in an int arraydata
- The DataBuffer containing the image datagetPixels(int, int, int, int, int[], DataBuffer)
public void setSample(int x, int y, int b, int s, DataBuffer data)
DataBuffer
using an int for input.
An ArrayIndexOutOfBoundsException
might be thrown if the
coordinates are not in bounds.setSample
in class SampleModel
x
- The X coordinate of the pixel locationy
- The Y coordinate of the pixel locationb
- the band to sets
- the input sample as an intdata
- the DataBuffer containing the image datagetSample(int, int, int, DataBuffer)
public void setSample(int x, int y, int b, float s, DataBuffer data)
DataBuffer
using a float for input.
An ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds.setSample
in class SampleModel
x
- The X coordinate of the pixel locationy
- The Y coordinate of the pixel locationb
- The band to sets
- The input sample as a floatdata
- The DataBuffer containing the image datagetSample(int, int, int, DataBuffer)
public void setSample(int x, int y, int b, double s, DataBuffer data)
DataBuffer
using a double for input.
An ArrayIndexOutOfBoundsException
might be thrown if
the coordinates are not in bounds.setSample
in class SampleModel
x
- The X coordinate of the pixel locationy
- The Y coordinate of the pixel locationb
- The band to sets
- The input sample as a doubledata
- The DataBuffer containing the image datagetSample(int, int, int, DataBuffer)
public void setSamples(int x, int y, int w, int h, int b, int[] iArray, DataBuffer data)
ArrayIndexOutOfBoundsException
might be thrown if the
coordinates are not in bounds.setSamples
in class SampleModel
x
- The X coordinate of the upper left pixel locationy
- The Y coordinate of the upper left pixel locationw
- The width of the pixel rectangleh
- The height of the pixel rectangleb
- The band to setiArray
- The input samples in an int arraydata
- The DataBuffer containing the image datagetSamples(int, int, int, int, int, int[], DataBuffer)
public boolean equals(Object o)
Object
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
x
and y
, multiple invocations of
x.equals(y)
consistently return true
or consistently return false
, provided no
information used in equals
comparisons on the
objects is modified.
x
,
x.equals(null)
should return false
.
The equals
method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x
and
y
, this method returns true
if and only
if x
and y
refer to the same object
(x == y
has the value true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode
method, which states
that equal objects must have equal hash codes.
equals
in class Object
o
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
HashMap
public int hashCode()
Object
HashMap
.
The general contract of hashCode
is:
hashCode
method
must consistently return the same integer, provided no information
used in equals
comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode
method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
class Object
does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
JavaTM programming language.)
hashCode
in class Object
Object.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)
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