1 files changed, 169 insertions, 0 deletions
diff --git a/src/java/com/jogamp/gluegen/runtime/PointerBuffer.java b/src/java/com/jogamp/gluegen/runtime/PointerBuffer.java
new file mode 100755
index 0000000..09ca2db
--- /dev/null
+++ b/src/java/com/jogamp/gluegen/runtime/PointerBuffer.java
@@ -0,0 +1,169 @@
+/*
+ * 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.
+ */
+
+package com.jogamp.gluegen.runtime;
+
+import java.nio.*;
+
+public class PointerBuffer {
+  private ByteBuffer   bb;
+  private Buffer       pb;
+  private int capacity, position;
+  private long[] backup;
+
+  private PointerBuffer(ByteBuffer bb) {
+    this.bb = bb;
+
+    if(CPU.is32Bit()) {
+       this.pb = bb.asIntBuffer();
+    }else{
+       this.pb = bb.asLongBuffer();
+    }
+
+    capacity = bb.capacity() / elementSize();
+
+    position=0;
+    backup = new long[capacity];
+  }
+
+  public final int limit() {
+    return capacity;
+  }
+  public final int capacity() {
+    return capacity;
+  }
+
+  public final int position() {
+    return position;
+  }
+
+  public final PointerBuffer position(int newPos) {
+    if(0>newPos || newPos>=capacity) {
+        throw new IndexOutOfBoundsException();
+    }
+    position = newPos;
+    return this;
+  }
+
+  public final int remaining() {
+    return capacity - position;
+  }
+
+  public final boolean hasRemaining() {
+    return position < capacity;
+  }
+
+  public final PointerBuffer rewind() {
+    position=0;
+    return this;
+  }
+
+  int   arrayOffset() { return 0; }
+
+  boolean   hasArray() { return true; }
+
+  public long[] array() {
+    return backup;
+  }
+
+  public static PointerBuffer allocate(int size) {
+      return new PointerBuffer(ByteBuffer.wrap(new byte[elementSize()* size]));
+  }
+
+  public static PointerBuffer allocateDirect(int size) {
+      return new PointerBuffer(BufferFactory.newDirectByteBuffer(elementSize() * size));
+  }
+
+  public static PointerBuffer wrap(ByteBuffer src) {
+    PointerBuffer res =  new PointerBuffer(src);
+    res.updateBackup();
+    return res;
+  }
+
+  public ByteBuffer getBuffer() {
+    return bb;
+  }
+
+  public boolean isDirect() {
+    return bb.isDirect();
+  }
+
+  public long get(int idx) {
+    if(0>idx || idx>=capacity) {
+        throw new IndexOutOfBoundsException();
+    }
+    if(CPU.is32Bit()) {
+        return ((IntBuffer)pb).get(idx);
+    } else {
+        return ((LongBuffer)pb).get(idx);
+    }
+  }
+
+  public long get() {
+    long r = get(position);
+    position++;
+    return r;
+  }
+
+  public PointerBuffer put(int idx, long v) {
+    if(0>idx || idx>=capacity) {
+        throw new IndexOutOfBoundsException();
+    }
+    backup[idx] = v;
+    if(CPU.is32Bit()) {
+        ((IntBuffer)pb).put(idx, (int)v);
+    } else {
+        ((LongBuffer)pb).put(idx, v);
+    }
+    return this;
+  }
+
+  public PointerBuffer put(long v) {
+    put(position, v);
+    position++;
+    return this;
+  }
+
+  private void updateBackup() {
+    for (int i = 0; i < capacity; i++) {
+      backup[i] = get(i);
+    }
+  }
+
+  public static int elementSize() {
+    return CPU.is32Bit() ? BufferFactory.SIZEOF_INT : BufferFactory.SIZEOF_LONG;
+  }
+}