HDFNativeData Class Reference

Detailed Description

This class encapsulates native methods to deal with arrays of numbers, converting from numbers to bytes and bytes to numbers.

These routines are used by class HDFArray to pass data to and from the HDF library.

Methods xxxToByte() convert a Java array of primitive numbers (int, short, ...) to a Java array of bytes. Methods byteToXxx() convert from a Java array of bytes into a Java array of primitive numbers (int, short, ...)

Variant interfaces convert a section of an array, and also can convert to sub-classes of Java Number.

See also: hdf.hdflib.HDFArray.

Static Public Member Functions
static synchronized native int[]	byteToInt (byte[] data)
static synchronized native float[]	byteToFloat (byte[] data)
static synchronized native short[]	byteToShort (byte[] data)
static synchronized native long[]	byteToLong (byte[] data)
static synchronized native double[]	byteToDouble (byte[] data)
static synchronized native int[]	byteToInt (int start, int len, byte[] data)
static synchronized int	byteToInt (byte[] data, int start)
static synchronized native short[]	byteToShort (int start, int len, byte[] data)
static synchronized short	byteToShort (byte[] data, int start)
static synchronized native float[]	byteToFloat (int start, int len, byte[] data)
static synchronized float	byteToFloat (byte[] data, int start)
static synchronized native long[]	byteToLong (int start, int len, byte[] data)
static synchronized long	byteToLong (byte[] data, int start)
static synchronized native double[]	byteToDouble (int start, int len, byte[] data)
static synchronized double	byteToDouble (byte[] data, int start)
static synchronized native byte[]	intToByte (int start, int len, int[] data)
static synchronized native byte[]	shortToByte (int start, int len, short[] data)
static synchronized native byte[]	floatToByte (int start, int len, float[] data)
static synchronized native byte[]	longToByte (int start, int len, long[] data)
static synchronized native byte[]	doubleToByte (int start, int len, double[] data)
static synchronized native byte[]	byteToByte (byte data)
static synchronized byte[]	byteToByte (Byte data)
static synchronized native byte[]	intToByte (int data)
static synchronized byte[]	intToByte (Integer data)
static synchronized native byte[]	shortToByte (short data)
static synchronized byte[]	shortToByte (Short data)
static synchronized native byte[]	floatToByte (float data)
static synchronized byte[]	floatToByte (Float data)
static synchronized native byte[]	longToByte (long data)
static synchronized byte[]	longToByte (Long data)
static synchronized native byte[]	doubleToByte (double data)
static synchronized byte[]	doubleToByte (Double data)
static synchronized Object	byteToNumber (byte[] barray, Object obj) throws HDFException
static Object	defineDataObject (int dataType, int datasize)

Member Function Documentation

byteToByte() [1/2]

static synchronized native byte[] byteToByte ( byte data )

static

Convert a single byte into an array of one byte.

(This is a trivial method.)

Parameters

data	The input byte

Returns

an array of bytes

byteToByte() [2/2]

static synchronized byte[] byteToByte ( Byte data )

static

Convert a single Byte object into an array of one byte.

(This is an almost trivial method.)

Parameters

data	The input Byte

Returns

an array of bytes

byteToDouble() [1/3]

static synchronized native double[] byteToDouble ( byte[] data )

static

Convert an array of bytes into an array of double

Parameters

data	The input array of bytes

Returns

an array of double

byteToDouble() [2/3]

static synchronized double byteToDouble ( byte[] data, int start )

static

Convert 8 bytes from an array of bytes into a single double

Parameters

start	The position in the input array of bytes to start
data	The input array of bytes

Returns

The double value of the bytes.

byteToDouble() [3/3]

static synchronized native double[] byteToDouble ( int start, int len, byte[] data )

static

Convert a range from an array of bytes into an array of double

Parameters

start	The position in the input array of bytes to start
len	The number of 'double' to convert
data	The input array of bytes

Returns

an array of 'len' double

byteToFloat() [1/3]

static synchronized native float[] byteToFloat ( byte[] data )

static

Convert an array of bytes into an array of floats

Parameters

data	The input array of bytes

Returns

an array of float

byteToFloat() [2/3]

static synchronized float byteToFloat ( byte[] data, int start )

static

Convert 4 bytes from an array of bytes into a single float

Parameters

start	The position in the input array of bytes to start
data	The input array of bytes

Returns

The float value of the bytes.

byteToFloat() [3/3]

static synchronized native float[] byteToFloat ( int start, int len, byte[] data )

static

Convert a range from an array of bytes into an array of float

Parameters

start	The position in the input array of bytes to start
len	The number of 'float' to convert
data	The input array of bytes

Returns

an array of 'len' float

byteToInt() [1/3]

static synchronized native int[] byteToInt ( byte[] data )

static

Convert an array of bytes into an array of ints

Parameters

data	The input array of bytes

Returns

an array of int

byteToInt() [2/3]

static synchronized int byteToInt ( byte[] data, int start )

static

Convert 4 bytes from an array of bytes into a single int

Parameters

start	The position in the input array of bytes to start
data	The input array of bytes

Returns

The integer value of the bytes.

byteToInt() [3/3]

static synchronized native int[] byteToInt ( int start, int len, byte[] data )

static

Convert a range from an array of bytes into an array of int

Parameters

start	The position in the input array of bytes to start
len	The number of 'int' to convert
data	The input array of bytes

Returns

an array of 'len' int

byteToLong() [1/3]

static synchronized native long[] byteToLong ( byte[] data )

static

Convert an array of bytes into an array of long

Parameters

data	The input array of bytes

Returns

an array of long

byteToLong() [2/3]

static synchronized long byteToLong ( byte[] data, int start )

static

Convert 8 bytes from an array of bytes into a single long

Parameters

start	The position in the input array of bytes to start
data	The input array of bytes

Returns

The long value of the bytes.

byteToLong() [3/3]

static synchronized native long[] byteToLong ( int start, int len, byte[] data )

static

Convert a range from an array of bytes into an array of long

Parameters

start	The position in the input array of bytes to start
len	The number of 'long' to convert
data	The input array of bytes

Returns

an array of 'len' long

byteToNumber()

static synchronized Object byteToNumber ( byte[] barray, Object obj ) throws HDFException

static

Create a Number object from an array of bytes.

Parameters

barray	The bytes to be converted
obj	Input object of the desired output class. Must be a sub-class of Number.

Returns

A Object of the type of obj.

Exceptions

HDFException

Error unsupported type.

byteToShort() [1/3]

static synchronized native short[] byteToShort ( byte[] data )

static

Convert an array of bytes into an array of shorts

Parameters

data	The input array of bytes

Returns

an array of short

byteToShort() [2/3]

static synchronized short byteToShort ( byte[] data, int start )

static

Convert 2 bytes from an array of bytes into a single short

Parameters

start	The position in the input array of bytes to start
data	The input array of bytes

Returns

The short value of the bytes.

byteToShort() [3/3]

static synchronized native short[] byteToShort ( int start, int len, byte[] data )

static

Convert a range from an array of bytes into an array of short

Parameters

start	The position in the input array of bytes to start
len	The number of 'short' to convert
data	The input array of bytes

Returns

an array of 'len' short

defineDataObject()

static Object defineDataObject ( int dataType, int datasize )

static

Allocate a 1D array large enough to hold a multidimensional array of 'datasize' elements of 'dataType' numbers. This is called from hdf.hdfobject.HDFGR and hdf.hdfobject.HDFSDS, and hdf.io.ASCII2HDF

Parameters

dataType	the type of the image data
datasize	the size of the image data array

Returns

an array of 'datasize' numbers of 'dataType

doubleToByte() [1/3]

static synchronized native byte[] doubleToByte ( double data )

static

Convert a single double into an array of 8 bytes.

Parameters

data	The input double

Returns

an array of bytes

doubleToByte() [2/3]

static synchronized byte[] doubleToByte ( Double data )

static

Convert a single Double object into an array of 8 bytes.

Parameters

data	The input Double

Returns

an array of bytes

doubleToByte() [3/3]

static synchronized native byte[] doubleToByte ( int start, int len, double[] data )

static

Convert a range from an array of double into an array of bytes.

Parameters

start	The position in the input array of double to start
len	The number of 'double' to convert
data	The input array of double

Returns

an array of bytes

floatToByte() [1/3]

static synchronized native byte[] floatToByte ( float data )

static

Convert a single float into an array of 4 bytes.

Parameters

data	The input float

Returns

an array of bytes

floatToByte() [2/3]

static synchronized byte[] floatToByte ( Float data )

static

Convert a single Float object into an array of 4 bytes.

Parameters

data	The input Float

Returns

an array of bytes

floatToByte() [3/3]

static synchronized native byte[] floatToByte ( int start, int len, float[] data )

static

Convert a range from an array of float into an array of bytes.

Parameters

start	The position in the input array of int to start
len	The number of 'float' to convert
data	The input array of float

Returns

an array of bytes

intToByte() [1/3]

static synchronized native byte[] intToByte ( int data )

static

Convert a single int into an array of 4 bytes.

Parameters

data	The input int

Returns

an array of bytes

intToByte() [2/3]

static synchronized native byte[] intToByte ( int start, int len, int[] data )

static

Convert a range from an array of int into an array of bytes.

Parameters

start	The position in the input array of int to start
len	The number of 'int' to convert
data	The input array of int

Returns

an array of bytes

intToByte() [3/3]

static synchronized byte[] intToByte ( Integer data )

static

Convert a single Integer object into an array of 4 bytes.

Parameters

data	The input Integer

Returns

an array of bytes

longToByte() [1/3]

static synchronized native byte[] longToByte ( int start, int len, long[] data )

static

Convert a range from an array of long into an array of bytes.

Parameters

start	The position in the input array of int to start
len	The number of 'long' to convert
data	The input array of long

Returns

an array of bytes

longToByte() [2/3]

static synchronized native byte[] longToByte ( long data )

static

Convert a single long into an array of 8 bytes.

Parameters

data	The input long

Returns

an array of bytes

longToByte() [3/3]

static synchronized byte[] longToByte ( Long data )

static

Convert a single Long object into an array of 8 bytes.

Parameters

data	The input Long

Returns

an array of bytes

shortToByte() [1/3]

static synchronized native byte[] shortToByte ( int start, int len, short[] data )

static

Convert a range from an array of short into an array of bytes.

Parameters

start	The position in the input array of int to start
len	The number of 'short' to convert
data	The input array of short

Returns

an array of bytes

shortToByte() [2/3]

static synchronized native byte[] shortToByte ( short data )

static

Convert a single short into an array of 2 bytes.

Parameters

data	The input short

Returns

an array of bytes

shortToByte() [3/3]

static synchronized byte[] shortToByte ( Short data )

static

Convert a single Short object into an array of 2 bytes.

Parameters

data	The input Short

Returns

an array of bytes

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The documentation for this class was generated from the following file:

• java/src/hdf/hdflib/HDFNativeData.java