Class ShortLookupTable

java.lang.Object
java.awt.image.LookupTable
java.awt.image.ShortLookupTable
public class ShortLookupTable extends LookupTable
This class defines a lookup table object. The output of a lookup operation using an object of this class is interpreted as an unsigned short quantity. The lookup table contains short data arrays for one or more bands (or components) of an image, and it contains an offset which will be subtracted from the input values before indexing the arrays. 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 bands.
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    ShortLookupTable(int offset, short[] data)
    Constructs a ShortLookupTable object from an array of shorts representing a lookup table for each band.
    ShortLookupTable(int offset, short[][] data)
    Constructs a ShortLookupTable object from an array of short arrays representing a lookup table for each band.

  • Method Summary

    Modifier and Type
    Method
    Description
    final short[][]
    getTable()
    Returns the lookup table data by reference.
    int[]
    lookupPixel(int[] src, int[] dst)
    Returns an array of samples of a pixel, translated with the lookup table.
    short[]
    lookupPixel(short[] src, short[] dst)
    Returns an array of samples of a pixel, translated with the lookup table.

    Methods declared in class LookupTable

    getNumComponents, getOffset
    Modifier and Type
    Method
    Description
    int
    getNumComponents()
    Returns the number of components in the lookup table.
    int
    getOffset()
    Returns the offset.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • ShortLookupTable

      public ShortLookupTable(int offset, short[][] data)
      Constructs a ShortLookupTable object from an array of short arrays representing a lookup table for each band. The offset will be subtracted from the input values before indexing into the arrays. The number of bands is the length of the data argument. The data array for each band is stored as a reference.
      Parameters:
      offset - the value subtracted from the input values before indexing into the arrays
      data - an array of short arrays representing a lookup table for each band

    • ShortLookupTable

      public ShortLookupTable(int offset, short[] data)
      Constructs a ShortLookupTable object from an array of shorts representing a lookup table for each band. The offset will be subtracted from the input values before indexing into the array. The data array is stored as a reference.
      Parameters:
      offset - the value subtracted from the input values before indexing into the arrays
      data - an array of shorts

  • Method Details

    • getTable

      public final short[][] getTable()
      Returns the lookup table data by reference. If this ShortLookupTable was constructed using a single short array, the length of the returned array is one.
      Returns:
      ShortLookupTable data array.

    • lookupPixel

      public int[] lookupPixel(int[] src, int[] dst)
      Returns an array of samples of a pixel, translated with the lookup table. The source and destination array can be the same array. Array dst is returned.
      Specified by:
      lookupPixel in class LookupTable
      Parameters:
      src - the source array.
      dst - the destination array. This array must be at least as long as src. If dst is null, a new array will be allocated having the same length as src.
      Returns:
      the array dst, an int array of samples.
      Throws:
      ArrayIndexOutOfBoundsException - if src is longer than dst or if for any element i of src, (src[i]&0xffff)-offset is either less than zero or greater than or equal to the length of the lookup table for any band.

    • lookupPixel

      public short[] lookupPixel(short[] src, short[] dst)
      Returns an array of samples of a pixel, translated with the lookup table. The source and destination array can be the same array. Array dst is returned.
      Parameters:
      src - the source array.
      dst - the destination array. This array must be at least as long as src. If dst is null, a new array will be allocated having the same length as src.
      Returns:
      the array dst, an int array of samples.
      Throws:
      ArrayIndexOutOfBoundsException - if src is longer than dst or if for any element i of src, (src[i]&0xffff)-offset is either less than zero or greater than or equal to the length of the lookup table for any band.