package com.aurellem.gb;

 

 import java.nio.ByteBuffer;

 import java.nio.IntBuffer;

 import java.nio.ByteOrder;

 

 public class Gb {

  

     

     public Gb(){}

 

 

     /** 

      * Hello World! This is just to test the native interface.

      */

     public static native void sayHello();

     

     /** 

      * Run the emulator on a given rom

      * @param rom - the name of the rom.

      */

     public static native void startEmulator(String rom);

 

     

     public static void loadVBA(){

 	System.loadLibrary("vba");

     }

 

     public static native void step();

 

     public static native void step(int keymask);

 

     public static native void shutdown();

 

     public static native void saveState(ByteBuffer buffer, int size);

 

     public static native void loadState(ByteBuffer buffer, int size);

 

     public static final int SAVE_SIZE = 90000;

 

     public static ByteBuffer saveState(){

 	ByteBuffer buf = 

 	    ByteBuffer.allocateDirect(SAVE_SIZE)

 	              .order(ByteOrder.nativeOrder());

 	buf.clear();

 	saveState(buf, SAVE_SIZE);

 	buf.flip();

 	return buf;

     }

 

     public static void loadState(ByteBuffer saveState){

 	loadState(saveState, SAVE_SIZE);

     }

 

     public static native int getROMSize();

     public static native int getRAMSize();

     

 

     public static final int WRAM_SIZE = 0x8000;

 

     public static final int VRAM_SIZE = 0x4000;

 

     public static final int NUM_REGISTERS = 27;

 

     public static native void getRAM(int[] store);

 

     public static native void getROM(int[] store);

 

     public static native void getWRAM(int[] store);

 

     public static native void getVRAM(int[] store);

     

     public static native void getRegisters(int[] store);

 }