Wikiadmin: Created page with "The Core class in nxm.ice.lib provides the standard framework for developing a Java callable Core. The wrappers for each hardware implementation are auto-generated by the inne..."

2020-04-14T15:06:07Z

Created page with "The Core class in nxm.ice.lib provides the standard framework for developing a Java callable Core. The wrappers for each hardware implementation are auto-generated by the inne..."

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The Core class in nxm.ice.lib provides the standard framework for developing a Java callable Core. The wrappers for each hardware implementation are auto-generated by the inner class definitions in the Java reference class.

== Example ==
Here is an example Java reference implementation of the noop function contained in the file Noop.java:

The three declarations for the CPU, VHS, and ICE classes are all that is needed to have NeXtMidas build the Native code and/or code wrappers for those implementations as well.

package nxm.ice.core;

import nxm.ice.lib.*;
import nxm.sys.lib.Data;
import nxm.sys.lib.Convert;

/**
Implements data copy with optional decimation and reformat.
*/
public class Noop extends CoreFactory {

// native implementation wrappers
public static class CPU extends CoreNative { public native long alloc(); }
public static class VHS extends CoreNative { public native long alloc(); }
public static class ICE extends CoreNative { public native long alloc(); }

// java implementation
public static class JVM extends Core {

private int dec,ioff,ibps,obps;

/** set parameters */
public void set (String key, Data value) {
if (key.equals("DECIMATION")) dec = value.toL();
else super.set(key,value);
}

/** get parameters */
public Data get (String key, byte type) {
if (key.equals("DECIMATION")) return new Data(dec);
else return super.get(key,type);
}

/** Ready this engine with current parameters */
public int open() {
ioff = 0;
ibps = getFormatBytes(1);
obps = getFormatBytes(2);
return 0; /** process a buffer of data */
}

public int process (byte[] a, int na, byte[] b, int nb) {
int n=0,i=ioff,n1=na/ibps;
if (ibps==1) {
for (; i<n1; i+=dec) b[n++]=a[i];
}
else if (ibps==2) {
short[] ai = Convert.castI(a,true);
short[] bi = Convert.castI(b,false);
for (; i<n1; i+=dec) bi[n++]=ai[i];
Convert.uncast(ai,a,false);
Convert.uncast(bi,b,true);
}
else if (ibps==4) {
int[] ai = Convert.castL(a,true);
int[] bi = Convert.castL(b,false);
for (; i<n1; i+=dec) bi[n++]=ai[i];
Convert.uncast(ai,a,false);
Convert.uncast(bi,b,true);
}
ioff = i%n1;
return n*obps;
}

}
}

[[Category:ICE_Cores|0]]

CORE JDK - Revision history

Wikiadmin: Created page with "The Core class in nxm.ice.lib provides the standard framework for developing a Java callable Core. The wrappers for each hardware implementation are auto-generated by the inne..."