introduced com.jogamp.common.{nio,os} packages and moved some classes.

1 files changed, 327 insertions, 0 deletions

diff --git a/src/java/com/jogamp/common/nio/StructAccessor.java b/src/java/com/jogamp/common/nio/StructAccessor.java
new file mode 100644
index 0000000..117e8de
--- /dev/null
+++ b/src/java/com/jogamp/common/nio/StructAccessor.java
@@ -0,0 +1,327 @@
+/*
+ * 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 com.jogamp.common.nio;
+
+import com.jogamp.common.os.Platform;
+import java.nio.*;
+
+/**
+ * @author Kenneth Russel
+ * @author Michael Bien
+ */
+public class StructAccessor {
+
+    private ByteBuffer bb;
+    private FloatBuffer fb;
+    private IntBuffer ib;
+    private ShortBuffer sb;
+    
+    //Java SE only
+    private CharBuffer cb;
+    private DoubleBuffer db;
+    private LongBuffer lb;
+
+    public StructAccessor(ByteBuffer bb) {
+        // Setting of byte order is concession to native code which needs
+        // to instantiate these
+        if(Platform.isJavaSE()) {
+            this.bb = bb.order(ByteOrder.nativeOrder());
+        }else{
+            // JSR 239 does not support the ByteOrder class or the order methods.
+            // The initial order of a byte buffer is the platform byte order.
+            this.bb = bb;
+        }
+    }
+
+    public ByteBuffer getBuffer() {
+        return bb;
+    }
+
+    /** 
+     * Returns a slice of the current ByteBuffer starting at the
+     * specified byte offset and extending the specified number of
+     * bytes. Note that this method is not thread-safe with respect to
+     * the other methods in this class.
+     */
+    public ByteBuffer slice(int byteOffset, int byteLength) {
+        bb.position(byteOffset);
+        bb.limit(byteOffset + byteLength);
+        ByteBuffer newBuf = bb.slice();
+        bb.position(0);
+        bb.limit(bb.capacity());
+        return newBuf;
+    }
+
+    /** Retrieves the byte at the specified slot (byte offset). */
+    public byte getByteAt(int slot) {
+        return bb.get(slot);
+    }
+
+    /** Puts a byte at the specified slot (byte offset). */
+    public void setByteAt(int slot, byte v) {
+        bb.put(slot, v);
+    }
+
+    /** Retrieves the char at the specified slot (2-byte offset). */
+    public char getCharAt(int slot) {
+        return charBuffer().get(slot);
+    }
+
+    /** Puts a char at the specified slot (2-byte offset). */
+    public void setCharAt(int slot, char v) {
+        charBuffer().put(slot, v);
+    }
+
+    /** Retrieves the double at the specified slot (8-byte offset). */
+    public double getDoubleAt(int slot) {
+        return doubleBuffer().get(slot);
+    }
+
+    /** Puts a double at the specified slot (8-byte offset). */
+    public void setDoubleAt(int slot, double v) {
+        doubleBuffer().put(slot, v);
+    }
+
+    /** Retrieves the float at the specified slot (4-byte offset). */
+    public float getFloatAt(int slot) {
+        return floatBuffer().get(slot);
+    }
+
+    /** Puts a float at the specified slot (4-byte offset). */
+    public void setFloatAt(int slot, float v) {
+        floatBuffer().put(slot, v);
+    }
+
+    /** Retrieves the int at the specified slot (4-byte offset). */
+    public int getIntAt(int slot) {
+        return intBuffer().get(slot);
+    }
+
+    /** Puts a int at the specified slot (4-byte offset). */
+    public void setIntAt(int slot, int v) {
+        intBuffer().put(slot, v);
+    }
+
+    /** Retrieves the short at the specified slot (2-byte offset). */
+    public short getShortAt(int slot) {
+        return shortBuffer().get(slot);
+    }
+
+    /** Puts a short at the specified slot (2-byte offset). */
+    public void setShortAt(int slot, short v) {
+        shortBuffer().put(slot, v);
+    }
+
+    public void setBytesAt(int slot, byte[] v) {
+        for (int i = 0; i < v.length; i++) {
+            bb.put(slot++, v[i]);
+        }
+    }
+
+    public byte[] getBytesAt(int slot, byte[] v) {
+        for (int i = 0; i < v.length; i++) {
+            v[i] = bb.get(slot++);
+        }
+        return v;
+    }
+
+    public void setCharsAt(int slot, char[] v) {
+        for (int i = 0; i < v.length; i++) {
+            charBuffer().put(slot++, v[i]);
+        }
+    }
+
+    public char[] getCharsAt(int slot, char[] v) {
+        for (int i = 0; i < v.length; i++) {
+            v[i] = charBuffer().get(slot++);
+        }
+        return v;
+    }
+
+    public void setIntsAt(int slot, int[] v) {
+        for (int i = 0; i < v.length; i++) {
+            intBuffer().put(slot++, v[i]);
+        }
+    }
+
+    public int[] getIntsAt(int slot, int[] v) {
+        for (int i = 0; i < v.length; i++) {
+            v[i] = intBuffer().get(slot++);
+        }
+        return v;
+    }
+
+    public void setFloatsAt(int slot, float[] v) {
+        for (int i = 0; i < v.length; i++) {
+            floatBuffer().put(slot++, v[i]);
+        }
+    }
+
+    public float[] getFloatsAt(int slot, float[] v) {
+        for (int i = 0; i < v.length; i++) {
+            v[i] = floatBuffer().get(slot++);
+        }
+        return v;
+    }
+
+    /**
+     * Puts a double at the specified slot (8-byte offset).
+     * May throw an {@link UnsupportedOperationException}
+     */
+    public void setDoublesAt(int slot, double[] v) {
+        for (int i = 0; i < v.length; i++) {
+            doubleBuffer().put(slot++, v[i]);
+        }
+    }
+
+    /**
+     * Retrieves the long at the specified slot (8-byte offset).
+     * May throw an {@link UnsupportedOperationException}
+     */
+    public double[] getDoublesAt(int slot, double[] v) {
+        for (int i = 0; i < v.length; i++) {
+            v[i] = doubleBuffer().get(slot++);
+        }
+        return v;
+    }
+
+    /**
+     * Retrieves the long at the specified slot (8-byte offset).
+     */
+    public long getLongAt(int slot) {
+        if(Platform.isJavaSE()){
+            return longBuffer().get(slot);
+        }else{
+            return getLongCDCAt(slot);
+        }
+    }
+
+    /**
+     * Puts a long at the specified slot (8-byte offset).
+     */
+    public void setLongAt(int slot, long v) {
+        if(Platform.isJavaSE()){
+            longBuffer().put(slot, v);
+        }else{
+            setLongCDCAt(slot, v);
+        }
+    }
+
+    //----------------------------------------------------------------------
+    // Internals only below this point
+    //
+
+    private final long getLongCDCAt(int slot) {
+        slot = slot << 1; // 8-byte to 4-byte offset
+        IntBuffer intBuffer = intBuffer();
+        long lo = 0x00000000FFFFFFFFL & ((long) intBuffer.get(slot));
+        long hi = 0x00000000FFFFFFFFL & ((long) intBuffer.get(slot + 1));
+        if (Platform.isLittleEndian()) {
+            return hi << 32 | lo;
+        }
+        return lo << 32 | hi;
+    }
+
+    private final void setLongCDCAt(int slot, long v) {
+        slot = slot << 1; // 8-byte to 4-byte offset
+        IntBuffer intBuffer = intBuffer();
+        int lo = (int) ((v) & 0x00000000FFFFFFFFL);
+        int hi = (int) ((v >> 32) & 0x00000000FFFFFFFFL);
+        if (Platform.isLittleEndian()) {
+            intBuffer.put(slot, lo);
+            intBuffer.put(slot + 1, hi);
+        } else {
+            intBuffer.put(slot, hi);
+            intBuffer.put(slot + 1, lo);
+        }
+    }
+
+    private final FloatBuffer floatBuffer() {
+        if (fb == null) {
+            fb = bb.asFloatBuffer();
+        }
+        return fb;
+    }
+
+    private final IntBuffer intBuffer() {
+        if (ib == null) {
+            ib = bb.asIntBuffer();
+        }
+        return ib;
+    }
+
+    private final ShortBuffer shortBuffer() {
+        if (sb == null) {
+            sb = bb.asShortBuffer();
+        }
+        return sb;
+    }
+
+    // - - Java SE only - -
+
+    private final LongBuffer longBuffer() {
+        checkSE();
+        if (lb == null) {
+            lb = bb.asLongBuffer();
+        }
+        return lb;
+    }
+
+    private final DoubleBuffer doubleBuffer() {
+        checkSE();
+        if (db == null) {
+            db = bb.asDoubleBuffer();
+        }
+        return db;
+    }
+
+    private final CharBuffer charBuffer() {
+        checkSE();
+        if (cb == null) {
+            cb = bb.asCharBuffer();
+        }
+        return cb;
+    }
+
+    private static void checkSE() {
+        if (!Platform.isJavaSE()) {
+            throw new UnsupportedOperationException("I am affraid, this Operation is not supportet on this platform.");
+        }
+    }
+}