gnu.javax.imageio.jpeg
Class ZigZag
This class implements the Zig Zag Algorithm on any array with
the same amount of rows and columns. It takes a matrix and in turn builds an
encoded byte array (or double array) from it. The adverse is also true, this
will take a byte or double array and build a matrix based on the zig zag
algorithm.
This is used exclusively in the JPEG DCT encoding.
static byte[][] | decode(byte[] data)- Convert a byte array into a matrix with the same amount of columns and
rows with length sqrt(double array length)
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static byte[][] | decode(byte[] data, int width, int height)
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static double[][] | decode(double[] data)- Convert a double array into a matrix with the same amount of columns and
rows with length sqrt(double array length)
|
static double[][] | decode(double[] data, int width, int height)
|
static float[][] | decode(float[] data, int width, int height)
|
static int[][] | decode(int[] data)
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static int[][] | decode(int[] data, int width, int height)
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static double[][] | decode8x8_map(input[] )
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static byte[] | encode(byte[][] matrix)- Encodes a matrix of equal width and height to a byte array.
|
static double[] | encode(double[][] matrix)- Encodes a matrix of equal width and height to a double array
|
static float[] | encode(float[][] matrix)- Encodes a matrix of equal width and height to a float array
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static short[] | encode(short[][] matrix)- Encodes a matrix of equal width and height to a float array
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clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
decode
public static byte[][] decode(byte[] data)
Convert a byte array into a matrix with the same amount of columns and
rows with length sqrt(double array length)
decode
public static byte[][] decode(byte[] data,
int width,
int height)
decode
public static double[][] decode(double[] data)
Convert a double array into a matrix with the same amount of columns and
rows with length sqrt(double array length)
decode
public static double[][] decode(double[] data,
int width,
int height)
decode
public static float[][] decode(float[] data,
int width,
int height)
decode
public static int[][] decode(int[] data)
decode
public static int[][] decode(int[] data,
int width,
int height)
encode
public static byte[] encode(byte[][] matrix)
Encodes a matrix of equal width and height to a byte array.
encode
public static double[] encode(double[][] matrix)
Encodes a matrix of equal width and height to a double array
encode
public static float[] encode(float[][] matrix)
Encodes a matrix of equal width and height to a float array
encode
public static short[] encode(short[][] matrix)
Encodes a matrix of equal width and height to a float array
ZigZag.java --
Copyright (C) 2005 Free Software Foundation, Inc.
This file is part of GNU Classpath.
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