Class java.awt.image.ByteLookupTable
java.lang.Object
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+----java.awt.image.LookupTable
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+----java.awt.image.ByteLookupTable
- public class ByteLookupTable
- extends LookupTable
This class defines a lookup table object. The lookup table
contains byte data for one or more tile channels or image components
(for example, separate arrays for R, G, and B),
and it contains an offset which will be subtracted from the
input value before indexing the array. This allows an array
smaller than the native data size to be provided for a
constrained input. If there is only one array in the lookup
table, it will be applied to all channels.
The byte data is expected to be unsigned data so it will be ANDed
with 0xff before it is used to index into the lookup table.
- See Also:
- ShortLookupTable, LookupOp
Constructor Summary
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ByteLookupTable(int offset,
byte[][] data)
Create a LookupTable object from an array of byte
arrays representing a lookup table for each tile
channel.
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ByteLookupTable(int offset,
byte[] data)
Create a LookupTable object from an array
of bytes representing a lookup table for each tile
channel.
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Method Summary
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byte[][]
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getDataStorage()
Returns the lookup table data.
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int[]
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lookupPixel(int[] src,
int[] dst)
Returns an array of components of a pixel, translated with the lookup
table.
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byte[]
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lookupPixel(byte[] src,
byte[] dst)
Returns an array of components of a pixel, translated with the lookup
table.
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Methods inherited from class java.lang.Object
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ByteLookupTable
public ByteLookupTable(int offset,
byte[][] data)
- Create a LookupTable object from an array of byte
arrays representing a lookup table for each tile
channel. The offset will be subtracted from the input
value before indexing into the arrays. The number of
components is the length of the data argument. The
data array for each component stored as a reference.
ByteLookupTable
public ByteLookupTable(int offset,
byte[] data)
- Create a LookupTable object from an array
of bytes representing a lookup table for each tile
channel. The offset will be subtracted from the input
value before indexing into the array. The number of
components is one. The data array will be stored internally.
getDataStorage
public byte[][] getDataStorage()
- Returns the lookup table data.
- Returns:
- LookupTable data array.
lookupPixel
public int[] lookupPixel(int[] src,
int[] dst)
- Returns an array of components of a pixel, translated with the lookup
table. The source and destination can be equal. If dst is null,
a new array will be allocated. The dst array is returned.
- Returns:
- an int array of components.
- Overrides:
- lookupPixel in class LookupTable
lookupPixel
public byte[] lookupPixel(byte[] src,
byte[] dst)
- Returns an array of components of a pixel, translated with the lookup
table. The source and destination can be equal. If dst is null,
a new array will be allocated. The dst array is returned.
- Returns:
- a byte array of components.
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