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/****************************************************************************
* NCSA HDF *
* National Comptational Science Alliance *
* University of Illinois at Urbana-Champaign *
* 605 E. Springfield, Champaign IL 61820 *
* *
* For conditions of distribution and use, see the accompanying *
* hdf/COPYING file. *
* *
****************************************************************************/
package ncsa.hdf.hdflib;
public class HDFNativeData
{
public HDFNativeData() {}
public static native int[] byteToInt( byte[] data );
public static native float[] byteToFloat( byte[] data );
public static native short[] byteToShort( byte[] data );
public static native long[] byteToLong( byte[] data );
public static native double[] byteToDouble( byte[] data );
public static native int[] byteToInt( int start, int len, byte[] data );
public static int byteToInt( byte[] data, int start)
{
int []ival = new int[1];
ival = byteToInt(start,1,data);
return(ival[0]);
}
public static native short[] byteToShort( int start, int len, byte[] data );
public static short byteToShort( byte[] data, int start)
{
short []sval = new short[1];
sval = byteToShort(start,1,data);
return(sval[0]);
}
public static native float[] byteToFloat( int start, int len, byte[] data );
public static float byteToFloat( byte[] data, int start)
{
float []fval = new float[1];
fval = byteToFloat(start,1,data);
return(fval[0]);
}
public static native long[] byteToLong( int start, int len, byte[] data );
public static long byteToLong( byte[] data, int start)
{
long []lval = new long[1];
lval = byteToLong(start,1,data);
return(lval[0]);
}
public static native double[] byteToDouble( int start, int len, byte[] data );
public static double byteToDouble( byte[] data, int start)
{
double []dval = new double[1];
dval = byteToDouble(start,1,data);
return(dval[0]);
}
public static native byte[] intToByte( int start, int len, int[] data);
public static native byte[] shortToByte( int start, int len, short[] data);
public static native byte[] floatToByte( int start, int len, float[] data);
public static native byte[] longToByte( int start, int len, long[] data);
public static native byte[] doubleToByte( int start, int len, double[] data);
public static native byte[] byteToByte( byte data);
static byte[] byteToByte( Byte data){return byteToByte(data.byteValue());}
public static native byte[] intToByte( int data);
static byte[] intToByte( Integer data){return intToByte(data.intValue());}
public static native byte[] shortToByte(short data);
static byte[] shortToByte( Short data){return shortToByte(data.shortValue());}
public static native byte[] floatToByte( float data);
static byte[] floatToByte( Float data){return floatToByte(data.floatValue());};
public static native byte[] longToByte( long data);
static byte[] longToByte(Long data){ return longToByte(data.longValue());}
public static native byte[] doubleToByte( double data);
static byte[] doubleToByte( Double data){return doubleToByte(data.doubleValue());}
public Object byteToNumber( byte[] barray, Object obj)
throws HDFException
{
Class theClass = obj.getClass();
String type = theClass.getName();
Object retobj = null;
if (type.equals("java.lang.Integer")) {
int[] i = ncsa.hdf.hdflib.HDFNativeData.byteToInt(0,1,barray);
retobj = new Integer(i[0]);
} else if (type.equals("java.lang.Byte")) {
retobj = new Byte(barray[0]);
} else if (type.equals("java.lang.Short")) {
short[] f = ncsa.hdf.hdflib.HDFNativeData.byteToShort(0,1,barray);
retobj = new Short(f[0]) ;
} else if (type.equals("java.lang.Float")) {
float[] f = ncsa.hdf.hdflib.HDFNativeData.byteToFloat(0,1,barray);
retobj = new Float(f[0]) ;
} else if (type.equals("java.lang.Long")) {
long[] f = ncsa.hdf.hdflib.HDFNativeData.byteToLong(0,1,barray);
retobj = new Long(f[0]) ;
} else if (type.equals("java.lang.Double")) {
double[] f = ncsa.hdf.hdflib.HDFNativeData.byteToDouble(0,1,barray);
retobj = new Double(f[0] );
} else {
/* exception: unsupprted type */
HDFException ex =
(HDFException)new HDFJavaException("byteToNumber: setfield bad type: "+obj+" "+type);
throw(ex);
}
return(retobj);
}
/**
* Allocate a 1D array large enough to hold a multidimensional
* array of 'datasize' elements of 'dataType' numbers.
* This is called from ncsa.hdf.hdfobject.HDFGR and
* ncsa.hdf.hdfobject.HDFSDS, and hdf.ncsa.io.ASCII2HDF
*
* @param dataType the type of the iamge data
* @param datasize the size of the image data array
* @returns an array of 'datasize' numbers of 'dataType
*
* @see ncsa.hdf.hdfobject.HDFGR
* @see ncsa.hdf.hdfobject.HDFSDS
*/
public static Object defineDataObject(int dataType, int datasize)
{
Object data = null;
if ((dataType & HDFConstants.DFNT_LITEND) != 0) {
dataType -= HDFConstants.DFNT_LITEND;
}
switch(dataType)
{
case HDFConstants.DFNT_INT16:
case HDFConstants.DFNT_UINT16:
data = new short[datasize];
break;
case HDFConstants.DFNT_INT32:
case HDFConstants.DFNT_UINT32:
data = new int[datasize];
break;
case HDFConstants.DFNT_INT64:
case HDFConstants.DFNT_UINT64:
data = new long[datasize];
break;
case HDFConstants.DFNT_FLOAT32:
data = new float[datasize];
break;
case HDFConstants.DFNT_FLOAT64:
data = new double[datasize];
break;
default:
case HDFConstants.DFNT_CHAR:
case HDFConstants.DFNT_UCHAR8:
case HDFConstants.DFNT_UINT8:
case HDFConstants.DFNT_INT8:
data = new byte[datasize];
break;
}
return data;
}
}
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