java.awt.image
Class PixelInterleavedSampleModel
java.lang.Object
java.awt.image.SampleModel
java.awt.image.ComponentSampleModel
java.awt.image.PixelInterleavedSampleModel
- public class PixelInterleavedSampleModel
- extends ComponentSampleModel
This class represents image data which is stored in a pixel interleaved
fashion and for
which each sample of a pixel occupies one data element of the DataBuffer.
It subclasses ComponentSampleModel but provides a more efficent
implementation for accessing pixel interleaved image data than is provided
by ComponentSampleModel. This class
stores sample data for all bands in a single bank of the
DataBuffer. Accessor methods are provided so that image data can be
manipulated directly. Pixel stride is the number of
data array elements between two samples for the same band on the same
scanline. Scanline stride is the number of data array elements between
a given sample and the corresponding sample in the same column of the next
scanline. Band offsets denote the number
of data array elements from the first data array element of the bank
of the DataBuffer holding each band to the first sample of the band.
The bands are numbered from 0 to N-1.
Bank indices denote the correspondence between a bank of the data buffer
and a band of image data.
This class supports
TYPE_BYTE,
TYPE_USHORT,
TYPE_SHORT,
TYPE_INT,
TYPE_FLOAT and
TYPE_DOUBLE datatypes.
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Constructor Summary |
PixelInterleavedSampleModel(int dataType,
int w,
int h,
int pixelStride,
int scanlineStride,
int[] bandOffsets)
Constructs a PixelInterleavedSampleModel with the specified parameters.
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| Methods inherited from class java.awt.image.ComponentSampleModel |
createDataBuffer, equals, getBandOffsets, getBankIndices, getDataElements, getNumDataElements, getOffset, getOffset, getPixel, getPixels, getPixelStride, getSample, getSampleDouble, getSampleFloat, getSamples, getSampleSize, getSampleSize, getScanlineStride, orderBands, setDataElements, setPixel, setPixels, setSample, setSample, setSample, setSamples |
| Methods inherited from class java.awt.image.SampleModel |
getDataElements, getDataType, getHeight, getNumBands, getPixel, getPixel, getPixels, getPixels, getSamples, getSamples, getTransferType, getWidth, setDataElements, setPixel, setPixel, setPixels, setPixels, setSamples, setSamples |
PixelInterleavedSampleModel
public PixelInterleavedSampleModel(int dataType,
int w,
int h,
int pixelStride,
int scanlineStride,
int[] bandOffsets)
- Constructs a PixelInterleavedSampleModel with the specified parameters.
The number of bands will be given by the length of the bandOffsets
array.
- Parameters:
dataType - The data type for storing samples.w - The width (in pixels) of the region of
image data described.h - The height (in pixels) of the region of
image data described.pixelStride - The pixel stride of the image data.scanlineStride - The line stride of the image data.bandOffsets - The offsets of all bands.
- Throws:
IllegalArgumentException - if w or
h is not greater than 0
IllegalArgumentException - if any offset between bands is
greater than the scanline stride
IllegalArgumentException - if the product of
pixelStride and w is greater
than scanlineStride
IllegalArgumentException - if pixelStride is
less than any offset between bands
IllegalArgumentException - if dataType is not
one of the supported data types
createCompatibleSampleModel
public SampleModel createCompatibleSampleModel(int w,
int h)
- Creates a new PixelInterleavedSampleModel with the specified
width and height. The new PixelInterleavedSampleModel will have the
same number of bands, storage data type, and pixel stride
as this PixelInterleavedSampleModel. The band offsets may be
compressed such that the minimum of all of the band offsets is zero.
- Overrides:
createCompatibleSampleModel in class ComponentSampleModel
- Parameters:
w - the width of the resulting SampleModelh - the height of the resulting SampleModel
- Returns:
- a new
SampleModel with the specified width
and height.
- Throws:
IllegalArgumentException - if w or
h is not greater than 0
createSubsetSampleModel
public SampleModel createSubsetSampleModel(int[] bands)
- Creates a new PixelInterleavedSampleModel with a subset of the
bands of this PixelInterleavedSampleModel. The new
PixelInterleavedSampleModel can be used with any DataBuffer that the
existing PixelInterleavedSampleModel can be used with. The new
PixelInterleavedSampleModel/DataBuffer combination will represent
an image with a subset of the bands of the original
PixelInterleavedSampleModel/DataBuffer combination.
- Overrides:
createSubsetSampleModel in class ComponentSampleModel
- Parameters:
bands - a subset of bands from this
ComponentSampleModel
- Returns:
- a
ComponentSampleModel created with a subset
of bands from this ComponentSampleModel.
hashCode
public int hashCode()
- Description copied from class:
Object
- Returns a hash code value for the object. This method is
supported for the benefit of hashtables such as those provided by
java.util.Hashtable.
The general contract of hashCode is:
- Whenever it is invoked on the same object more than once during
an execution of a Java application, the 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.
- If two objects are equal according to the equals(Object)
method, then calling the
hashCode method on each of
the two objects must produce the same integer result.
- It is not required that if two objects are unequal
according to the
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 hashtables.
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.)
- Overrides:
hashCode in class ComponentSampleModel