/*
 * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
 * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
 * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed or intended for use
 * in the design, construction, operation or maintenance of any nuclear
 * facility.
 * 
 * Sun gratefully acknowledges that this software was originally authored
 * and developed by Kenneth Bradley Russell and Christopher John Kline.
 */

package net.java.games.gluegen.runtime;

import java.nio.*;

public class BufferFactory {
  public static ByteBuffer newDirectByteBuffer(int size) {
    ByteBuffer buf = ByteBuffer.allocateDirect(size);
    buf.order(ByteOrder.nativeOrder());
    return buf;
  }

  /** Helper routine to tell whether a buffer is direct or not. Null
      pointers are considered direct. isDirect() should really be
      public in Buffer and not replicated in all subclasses. */
  public static boolean isDirect(Buffer buf) {
    if (buf == null) {
      return true;
    }
    if (buf instanceof ByteBuffer) {
      return ((ByteBuffer) buf).isDirect();
    } else if (buf instanceof FloatBuffer) {
      return ((FloatBuffer) buf).isDirect();
    } else if (buf instanceof DoubleBuffer) {
      return ((DoubleBuffer) buf).isDirect();
    } else if (buf instanceof CharBuffer) {
      return ((CharBuffer) buf).isDirect();
    } else if (buf instanceof ShortBuffer) {
      return ((ShortBuffer) buf).isDirect();
    } else if (buf instanceof IntBuffer) {
      return ((IntBuffer) buf).isDirect();
    } else if (buf instanceof LongBuffer) {
      return ((LongBuffer) buf).isDirect();
    }
    throw new RuntimeException("Unknown buffer type " + buf.getClass().getName());
  }
}