Class ComponentSampleModel
- Direct Known Subclasses:
BandedSampleModel, PixelInterleavedSampleModel
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,- See Also:
Field Summary
| Modifier and Type | Field | 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. |
Fields declared in class SampleModel
dataType, height, width | Modifier and Type | Field | Description |
|---|---|---|
protected int |
dataType |
Data type of the DataBuffer storing the pixel data. |
protected int |
height |
Height in pixels of the region of image data that this SampleModel describes. |
protected int |
width |
Width in pixels of the region of image data that this SampleModel describes. |
Constructor Summary
| Constructor | Description |
|---|---|
ComponentSampleModel |
Constructs a ComponentSampleModel with the specified parameters. |
ComponentSampleModel |
Constructs a ComponentSampleModel with the specified parameters. |
Method Summary
| Modifier and Type | Method | Description |
|---|---|---|
SampleModel |
createCompatibleSampleModel |
Creates a new ComponentSampleModel with the specified width and height. |
DataBuffer |
createDataBuffer() |
Creates a DataBuffer that corresponds to this ComponentSampleModel. |
SampleModel |
createSubsetSampleModel |
Creates a new ComponentSampleModel with a subset of the bands of this ComponentSampleModel. |
final int[] |
getBandOffsets() |
Returns the band offset for all bands. |
final int[] |
getBankIndices() |
Returns the bank indices for all bands. |
Object |
getDataElements |
Returns data for a single pixel in a primitive array of type TransferType. |
final 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 |
Gets the offset for the first band of pixel (x,y). |
int |
getOffset |
Gets the offset for band b of pixel (x,y). |
int[] |
getPixel |
Returns the samples for a specified pixel in an int array, one sample per array element. |
int[] |
getPixels |
Returns all samples for a rectangle of pixels in an int array, one sample per array element. |
final int |
getPixelStride() |
Returns the pixel stride of this ComponentSampleModel. |
int |
getSample |
Returns the sample in a specified band for the pixel located at (x,y) as an int. |
double |
getSampleDouble |
Returns the sample in a specified band for a pixel located at (x,y) as a double. |
float |
getSampleFloat |
Returns the sample in a specified band for the pixel located at (x,y) as a float. |
int[] |
getSamples |
Returns the samples for a specified band for the specified rectangle of pixels in an int array, one sample per array element. |
final int[] |
getSampleSize() |
Returns the number of bits per sample for all bands. |
final int |
getSampleSize |
Returns the number of bits per sample for the specified band. |
final int |
getScanlineStride() |
Returns the scanline stride of this ComponentSampleModel. |
void |
setDataElements |
Sets the data for a single pixel in the specified DataBuffer from a primitive array of type TransferType. |
void |
setPixel |
Sets a pixel in the DataBuffer using an int array of samples for input. |
void |
setPixels |
Sets all samples for a rectangle of pixels from an int array containing one sample per array element. |
void |
setSample |
Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a double for input. |
void |
setSample |
Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using a float for input. |
void |
setSample |
Sets a sample in the specified band for the pixel located at (x,y) in the DataBuffer using an int for input. |
void |
setSamples |
Sets the samples in the specified band for the specified rectangle of pixels from an int array containing one sample per array element. |
Methods declared in class SampleModel
getDataElements, getDataType, getHeight, getNumBands, getPixel, getPixel, getPixels, getPixels, getSamples, getSamples, getTransferType, getWidth, setDataElements, setPixel, setPixel, setPixels, setPixels, setSamples, setSamples | Modifier and Type | Method | Description |
|---|---|---|
Object |
getDataElements |
Returns the pixel data for the specified rectangle of pixels in a primitive array of type TransferType. |
final int |
getDataType() |
Returns the data type of the DataBuffer storing the pixel data. |
final int |
getHeight() |
Returns the height in pixels. |
final int |
getNumBands() |
Returns the total number of bands of image data. |
double[] |
getPixel |
Returns the samples for the specified pixel in an array of double. |
float[] |
getPixel |
Returns the samples for the specified pixel in an array of float. |
double[] |
getPixels |
Returns all samples for a rectangle of pixels in a double array, one sample per array element. |
float[] |
getPixels |
Returns all samples for a rectangle of pixels in a float array, one sample per array element. |
double[] |
getSamples |
Returns the samples for a specified band for a specified rectangle of pixels in a double array, one sample per array element. |
float[] |
getSamples |
Returns the samples for a specified band for the specified rectangle of pixels in a float array, one sample per array element. |
int |
getTransferType() |
Returns the TransferType used to transfer pixels via the getDataElements and setDataElements methods. |
final int |
getWidth() |
Returns the width in pixels. |
void |
setDataElements |
Sets the data for a rectangle of pixels in the specified DataBuffer from a primitive array of type TransferType. |
void |
setPixel |
Sets a pixel in the DataBuffer using a double array of samples for input. |
void |
setPixel |
Sets a pixel in the DataBuffer using a float array of samples for input. |
void |
setPixels |
Sets all samples for a rectangle of pixels from a double array containing one sample per array element. |
void |
setPixels |
Sets all samples for a rectangle of pixels from a float array containing one sample per array element. |
void |
setSamples |
Sets the samples in the specified band for the specified rectangle of pixels from a double array containing one sample per array element. |
void |
setSamples |
Sets the samples in the specified band for the specified rectangle of pixels from a float array containing one sample per array element. |
Methods declared in class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | Modifier and Type | Method | Description |
|---|---|---|
protected Object |
clone() |
Creates and returns a copy of this object. |
boolean |
equals |
Indicates whether some other object is "equal to" this one. |
protected void |
finalize() |
Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release. |
final Class |
getClass() |
Returns the runtime class of this Object. |
int |
hashCode() |
Returns a hash code value for this object. |
final void |
notify() |
Wakes up a single thread that is waiting on this object's monitor. |
final void |
notifyAll() |
Wakes up all threads that are waiting on this object's monitor. |
String |
toString() |
Returns a string representation of the object. |
final void |
wait() |
Causes the current thread to wait until it is awakened, typically by being notified or interrupted. |
final void |
wait |
Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. |
final void |
wait |
Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. |
Field Details
bandOffsets
protected int[] bandOffsets
bankIndices
protected int[] bankIndices
numBands
protected int numBands
ComponentSampleModel.numBanks
protected int numBanks
ComponentSampleModel.scanlineStride
protected int scanlineStride
pixelStride
protected int pixelStride
Constructor Details
ComponentSampleModel
public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride, int[] bandOffsets)
- 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 region of image data described -
scanlineStride- the line stride of the region of image data described -
bandOffsets- the offsets of all bands - Throws:
-
IllegalArgumentException- ifwandhare not both greater than 0 -
IllegalArgumentException- if the product ofwandhis greater thanInteger.MAX_VALUE -
IllegalArgumentException- ifpixelStrideis less than 0 -
IllegalArgumentException- ifscanlineStrideis less than 0 -
NullPointerException- ifbandOffsetsisnull -
IllegalArgumentException- ifbandOffsets.lengthis 0 -
IllegalArgumentException- ifdataTypeis not one of the supported data types for this sample model.
ComponentSampleModel
public ComponentSampleModel(int dataType, int w, int h, int pixelStride, int scanlineStride, int[] bankIndices, int[] bandOffsets)
- 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 region of image data described -
scanlineStride- The line stride of the region of image data described -
bankIndices- the bank indices of all bands -
bandOffsets- the band offsets of all bands - Throws:
-
IllegalArgumentException- ifwandhare not both greater than 0 -
IllegalArgumentException- if the product ofwandhis greater thanInteger.MAX_VALUE -
IllegalArgumentException- ifpixelStrideis less than 0 -
IllegalArgumentException- ifscanlineStrideis less than 0 -
NullPointerException- ifbankIndicesisnull -
NullPointerException- ifbandOffsetsisnull -
IllegalArgumentException- ifbandOffsets.lengthis 0 -
IllegalArgumentException- if the length ofbankIndicesdoes not equal the length ofbandOffsets -
IllegalArgumentException- if any of the bank indices ofbandIndicesis less than 0 -
IllegalArgumentException- ifdataTypeis not one of the supported data types for this sample model
Method Details
createCompatibleSampleModel
public 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.- Specified by:
-
createCompatibleSampleModelin classSampleModel - Parameters:
-
w- the width of the resultingSampleModel -
h- the height of the resultingSampleModel - Returns:
- a new
ComponentSampleModelwith the specified size - Throws:
-
IllegalArgumentException- ifworhis not greater than 0
createSubsetSampleModel
public SampleModel createSubsetSampleModel(int[] bands)
- Specified by:
-
createSubsetSampleModelin classSampleModel - Parameters:
-
bands- a subset of bands from thisComponentSampleModel - Returns:
- a
ComponentSampleModelcreated with a subset of bands from thisComponentSampleModel. - Throws:
-
NullPointerException- ifbandsisnull -
IllegalArgumentException- if the number of bands is not greater than 0 -
RasterFormatException- if the number of bands is greater than the number of banks in this sample model. -
ArrayIndexOutOfBoundsException- if any of the band indices is out of bounds
createDataBuffer
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.- Specified by:
-
createDataBufferin classSampleModel - Returns:
- a
DataBufferwhose data type, number of banks and size are consistent with thisComponentSampleModel.
getOffset
public int getOffset(int x, int y)
DataBuffer data with a ComponentSampleModel csm as
data.getElem(csm.getOffset(x, y));
- Parameters:
-
x- the X location of the pixel -
y- the Y location of the pixel - Returns:
- the offset for the first band of the specified pixel.
getOffset
public 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));
- Parameters:
-
x- the X location of the specified pixel -
y- the Y location of the specified pixel -
b- the specified band - Returns:
- the offset for the specified band of the specified pixel.
getSampleSize
public final int[] getSampleSize()
- Specified by:
-
getSampleSizein classSampleModel - Returns:
- an array containing the number of bits per sample for all bands, where each element in the array represents a band.
getSampleSize
public final int getSampleSize(int band)
Since all bands of a ComponentSampleModel are the same size, this method ignores the band parameter and returns the size of the first (0th) band.
- Specified by:
-
getSampleSizein classSampleModel - Parameters:
-
band- the specified band (ignored) - Returns:
- the number of bits per sample for the specified band.
getBankIndices
public final int[] getBankIndices()
- Returns:
- the bank indices for all bands.
getBandOffsets
public final int[] getBandOffsets()
- Returns:
- the band offsets for all bands.
getScanlineStride
public final int getScanlineStride()
- Returns:
- the scanline stride of this
ComponentSampleModel.
getPixelStride
public final int getPixelStride()
- Returns:
- the pixel stride of this
ComponentSampleModel.
getNumDataElements
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.- Specified by:
-
getNumDataElementsin classSampleModel - Returns:
- the number of data elements needed to transfer a pixel with the
getDataElementsandsetDataElementsmethods. - See Also:
getDataElements
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 TransferTypes 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.
- Specified by:
-
getDataElementsin classSampleModel - Parameters:
-
x- the X coordinate of the pixel location -
y- the Y coordinate of the pixel location -
obj- if non-null, a primitive array in which to return the pixel data -
data- theDataBuffercontaining the image data - Returns:
- the data of the specified pixel
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates are not in bounds, or if obj is too small to hold the output. - See Also:
getPixel
public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
- Overrides:
-
getPixelin classSampleModel - Parameters:
-
x- The X coordinate of the pixel location -
y- The Y coordinate of the pixel location -
iArray- If non-null, returns the samples in this array -
data- The DataBuffer containing the image data - Returns:
- the samples for the specified pixel.
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates are not in bounds, or ifiArrayis too small to hold the output. - See Also:
getPixels
public int[] getPixels(int x, int y, int w, int h, int[] iArray, DataBuffer data)
- Overrides:
-
getPixelsin classSampleModel - Parameters:
-
x- The X coordinate of the upper left pixel location. -
y- The Y coordinate of the upper left pixel location. -
w- The width of the pixel rectangle. -
h- The height of the pixel rectangle. -
iArray- If non-null, returns the samples in this array. -
data- The DataBuffer containing the image data. - Returns:
- the samples for the specified region of pixels.
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates are not in bounds, orworhis negative or ifiArrayis too small to hold the output. - See Also:
getSample
public int getSample(int x, int y, int b, DataBuffer data)
- Specified by:
-
getSamplein classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
b- The band to return. -
data- The DataBuffer containing the image data. - Returns:
- the sample in a specified band for the specified pixel.
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or the band index are not in bounds. - See Also:
getSampleFloat
public float getSampleFloat(int x, int y, int b, DataBuffer data)
- Overrides:
-
getSampleFloatin classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
b- The band to return. -
data- The DataBuffer containing the image data. - Returns:
- the sample in a specified band for the specified pixel.
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or the band index are not in bounds.
getSampleDouble
public double getSampleDouble(int x, int y, int b, DataBuffer data)
- Overrides:
-
getSampleDoublein classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
b- The band to return. -
data- The DataBuffer containing the image data. - Returns:
- the sample in a specified band for the specified pixel.
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or the band index are not in bounds.
getSamples
public int[] getSamples(int x, int y, int w, int h, int b, int[] iArray, DataBuffer data)
- Overrides:
-
getSamplesin classSampleModel - Parameters:
-
x- The X coordinate of the upper left pixel location. -
y- The Y coordinate of the upper left pixel location. -
w- The width of the pixel rectangle. -
h- The height of the pixel rectangle. -
b- The band to return. -
iArray- If non-null, returns the samples in this array. -
data- The DataBuffer containing the image data. - Returns:
- the samples for the specified band for the specified region of pixels.
- Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or band index are not in bounds, orworhis negative, or ifiArrayis too small to hold the output. - See Also:
setDataElements
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 TransferTypes 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.
- Specified by:
-
setDataElementsin classSampleModel - Parameters:
-
x- the X coordinate of the pixel location -
y- the Y coordinate of the pixel location -
obj- a primitive array containing pixel data -
data- the DataBuffer containing the image data - Throws:
-
NullPointerException- ifobjordataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates are not in bounds, or if obj is too small to hold the input. - See Also:
setPixel
public void setPixel(int x, int y, int[] iArray, DataBuffer data)
- Overrides:
-
setPixelin classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
iArray- The input samples in an int array. -
data- The DataBuffer containing the image data. - Throws:
-
NullPointerException- ifiArrayordataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates are not in bounds, or ifiArrayis too small to hold the input. - See Also:
setPixels
public void setPixels(int x, int y, int w, int h, int[] iArray, DataBuffer data)
- Overrides:
-
setPixelsin classSampleModel - Parameters:
-
x- The X coordinate of the upper left pixel location. -
y- The Y coordinate of the upper left pixel location. -
w- The width of the pixel rectangle. -
h- The height of the pixel rectangle. -
iArray- The input samples in an int array. -
data- The DataBuffer containing the image data. - Throws:
-
NullPointerException- ifiArrayordataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates are not in bounds, orworhis negative or ifiArrayis too small to hold the input. - See Also:
setSample
public void setSample(int x, int y, int b, int s, DataBuffer data)
- Specified by:
-
setSamplein classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
b- The band to set. -
s- The input sample as an int. -
data- The DataBuffer containing the image data. - Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or the band index are not in bounds. - See Also:
setSample
public void setSample(int x, int y, int b, float s, DataBuffer data)
setSample(int, int, int, DataBuffer) method using that int value. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.- Overrides:
-
setSamplein classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
b- The band to set. -
s- The input sample as a float. -
data- The DataBuffer containing the image data. - Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or the band index are not in bounds. - See Also:
setSample
public void setSample(int x, int y, int b, double s, DataBuffer data)
setSample(int, int, int, DataBuffer) method using that int value. ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds.- Overrides:
-
setSamplein classSampleModel - Parameters:
-
x- The X coordinate of the pixel location. -
y- The Y coordinate of the pixel location. -
b- The band to set. -
s- The input sample as a double. -
data- The DataBuffer containing the image data. - Throws:
-
NullPointerException- ifdataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or the band index are not in bounds. - See Also:
setSamples
public void setSamples(int x, int y, int w, int h, int b, int[] iArray, DataBuffer data)
- Overrides:
-
setSamplesin classSampleModel - Parameters:
-
x- The X coordinate of the upper left pixel location. -
y- The Y coordinate of the upper left pixel location. -
w- The width of the pixel rectangle. -
h- The height of the pixel rectangle. -
b- The band to set. -
iArray- The input samples in an int array. -
data- The DataBuffer containing the image data. - Throws:
-
NullPointerException- ifiArrayordataisnull. -
ArrayIndexOutOfBoundsException- if the coordinates or band index are not in bounds, orworhis negative, or ifiArrayis too small to hold the input. - See Also:
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