diff options
Diffstat (limited to 'src/java/com/jogamp/gluegen/runtime/Buffers.java')
| -rwxr-xr-x | src/java/com/jogamp/gluegen/runtime/Buffers.java | 668 |
1 files changed, 668 insertions, 0 deletions
diff --git a/src/java/com/jogamp/gluegen/runtime/Buffers.java b/src/java/com/jogamp/gluegen/runtime/Buffers.java new file mode 100755 index 0000000..843d8a6 --- /dev/null +++ b/src/java/com/jogamp/gluegen/runtime/Buffers.java @@ -0,0 +1,668 @@ +/* + * 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.gluegen.runtime; + +import java.nio.*; + +/** + * @author Kenneth Russel + * @author Sven Gothel + * @author Michael Bien + */ +public class Buffers { + + public static final int SIZEOF_BYTE = 1; + public static final int SIZEOF_SHORT = 2; + public static final int SIZEOF_CHAR = 2; + public static final int SIZEOF_INT = 4; + public static final int SIZEOF_FLOAT = 4; + public static final int SIZEOF_LONG = 8; + public static final int SIZEOF_DOUBLE = 8; + + private Buffers() {} + + /** + * Allocates a new direct ByteBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static ByteBuffer newDirectByteBuffer(int numElements) { + return nativeOrder(ByteBuffer.allocateDirect(numElements)); + } + + public static ByteBuffer newDirectByteBuffer(byte[] values, int offset, int lenght) { + return (ByteBuffer)newDirectByteBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static ByteBuffer newDirectByteBuffer(byte[] values, int offset) { + return newDirectByteBuffer(values, offset, values.length-offset); + } + + public static ByteBuffer newDirectByteBuffer(byte[] values) { + return newDirectByteBuffer(values, 0); + } + + /** + * Allocates a new direct DoubleBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static DoubleBuffer newDirectDoubleBuffer(int numElements) { + return newDirectByteBuffer(numElements * SIZEOF_DOUBLE).asDoubleBuffer(); + } + + public static DoubleBuffer newDirectDoubleBuffer(double[] values, int offset, int lenght) { + return (DoubleBuffer)newDirectDoubleBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static DoubleBuffer newDirectDoubleBuffer(double[] values, int offset) { + return newDirectDoubleBuffer(values, offset, values.length - offset); + } + + public static DoubleBuffer newDirectDoubleBuffer(double[] values) { + return newDirectDoubleBuffer(values, 0); + } + + /** + * Allocates a new direct FloatBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static FloatBuffer newDirectFloatBuffer(int numElements) { + return newDirectByteBuffer(numElements * SIZEOF_FLOAT).asFloatBuffer(); + } + + public static FloatBuffer newDirectFloatBuffer(float[] values, int offset, int lenght) { + return (FloatBuffer)newDirectFloatBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static FloatBuffer newDirectFloatBuffer(float[] values, int offset) { + return newDirectFloatBuffer(values, offset, values.length - offset); + } + + public static FloatBuffer newDirectFloatBuffer(float[] values) { + return newDirectFloatBuffer(values, 0); + } + + /** + * Allocates a new direct IntBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static IntBuffer newDirectIntBuffer(int numElements) { + return newDirectByteBuffer(numElements * SIZEOF_INT).asIntBuffer(); + } + + public static IntBuffer newDirectIntBuffer(int[] values, int offset, int lenght) { + return (IntBuffer)newDirectIntBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static IntBuffer newDirectIntBuffer(int[] values, int offset) { + return newDirectIntBuffer(values, offset, values.length - offset); + } + + public static IntBuffer newDirectIntBuffer(int[] values) { + return newDirectIntBuffer(values, 0); + } + + /** + * Allocates a new direct LongBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static LongBuffer newDirectLongBuffer(int numElements) { + return newDirectByteBuffer(numElements * SIZEOF_LONG).asLongBuffer(); + } + + public static LongBuffer newDirectLongBuffer(long[] values, int offset, int lenght) { + return (LongBuffer)newDirectLongBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static LongBuffer newDirectLongBuffer(long[] values, int offset) { + return newDirectLongBuffer(values, offset, values.length - offset); + } + + public static LongBuffer newDirectLongBuffer(long[] values) { + return newDirectLongBuffer(values, 0); + } + + /** + * Allocates a new direct ShortBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static ShortBuffer newDirectShortBuffer(int numElements) { + return newDirectByteBuffer(numElements * SIZEOF_SHORT).asShortBuffer(); + } + + public static ShortBuffer newDirectShortBuffer(short[] values, int offset, int lenght) { + return (ShortBuffer)newDirectShortBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static ShortBuffer newDirectShortBuffer(short[] values, int offset) { + return newDirectShortBuffer(values, offset, values.length - offset); + } + + public static ShortBuffer newDirectShortBuffer(short[] values) { + return newDirectShortBuffer(values, 0); + } + + /** + * Allocates a new direct CharBuffer with the specified number of + * elements. The returned buffer will have its byte order set to + * the host platform's native byte order. + */ + public static CharBuffer newDirectCharBuffer(int numElements) { + return newDirectByteBuffer(numElements * SIZEOF_SHORT).asCharBuffer(); + } + + public static CharBuffer newDirectCharBuffer(char[] values, int offset, int lenght) { + return (CharBuffer)newDirectCharBuffer(lenght).put(values, offset, lenght).rewind(); + } + + public static CharBuffer newDirectCharBuffer(char[] values, int offset) { + return newDirectCharBuffer(values, offset, values.length - offset); + } + + public static CharBuffer newDirectCharBuffer(char[] values) { + return newDirectCharBuffer(values, 0); + } + + /** + * Helper routine to set a ByteBuffer to the native byte order, if + * that operation is supported by the underlying NIO + * implementation. + */ + public static ByteBuffer nativeOrder(ByteBuffer buf) { + if (Platform.isJavaSE()) { + return buf.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. + return buf; + } + } + + /** + * Helper routine to tell whether a buffer is direct or not. Null + * pointers are considered NOT direct. isDirect() should really be + * public in Buffer and not replicated in all subclasses. + */ + public static boolean isDirect(Object 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 IntBuffer) { + return ((IntBuffer) buf).isDirect(); + } else if (buf instanceof ShortBuffer) { + return ((ShortBuffer) buf).isDirect(); + } else if (buf instanceof PointerBuffer) { + return ((PointerBuffer) buf).isDirect(); + } else if (Platform.isJavaSE()) { + if (buf instanceof DoubleBuffer) { + return ((DoubleBuffer) buf).isDirect(); + } else if (buf instanceof LongBuffer) { + return ((LongBuffer) buf).isDirect(); + }else if (buf instanceof CharBuffer) { + return ((CharBuffer) buf).isDirect(); + } + } + throw new RuntimeException("Unexpected buffer type " + buf.getClass().getName()); + } + + /** + * Helper routine to get the Buffer byte offset by taking into + * account the Buffer position and the underlying type. This is + * the total offset for Direct Buffers. + */ + public static int getDirectBufferByteOffset(Object buf) { + if (buf == null) { + return 0; + } + if (buf instanceof Buffer) { + int pos = ((Buffer) buf).position(); + if (buf instanceof ByteBuffer) { + return pos; + } else if (buf instanceof FloatBuffer) { + return pos * SIZEOF_FLOAT; + } else if (buf instanceof IntBuffer) { + return pos * SIZEOF_INT; + } else if (buf instanceof ShortBuffer) { + return pos * SIZEOF_SHORT; + }else if(Platform.isJavaSE()) { + if (buf instanceof DoubleBuffer) { + return pos * SIZEOF_DOUBLE; + } else if (buf instanceof LongBuffer) { + return pos * SIZEOF_LONG; + } else if (buf instanceof CharBuffer) { + return pos * SIZEOF_CHAR; + } + } + } else if (buf instanceof PointerBuffer) { + PointerBuffer pointerBuffer = (PointerBuffer) buf; + return pointerBuffer.position() * PointerBuffer.elementSize(); + } + + throw new RuntimeException("Disallowed array backing store type in buffer " + + buf.getClass().getName()); + } + + /** + * Helper routine to return the array backing store reference from + * a Buffer object. + */ + public static Object getArray(Object buf) { + if (buf == null) { + return null; + } + if (buf instanceof ByteBuffer) { + return ((ByteBuffer) buf).array(); + } else if (buf instanceof FloatBuffer) { + return ((FloatBuffer) buf).array(); + } else if (buf instanceof IntBuffer) { + return ((IntBuffer) buf).array(); + } else if (buf instanceof ShortBuffer) { + return ((ShortBuffer) buf).array(); + } else if (buf instanceof PointerBuffer) { + return ((PointerBuffer) buf).array(); + }else if(Platform.isJavaSE()) { + if (buf instanceof DoubleBuffer) { + return ((DoubleBuffer) buf).array(); + } else if (buf instanceof LongBuffer) { + return ((LongBuffer) buf).array(); + } else if (buf instanceof CharBuffer) { + return ((CharBuffer) buf).array(); + } + } + + throw new RuntimeException("Disallowed array backing store type in buffer " + + buf.getClass().getName()); + } + + /** + * Helper routine to get the full byte offset from the beginning of + * the array that is the storage for the indirect Buffer + * object. The array offset also includes the position offset + * within the buffer, in addition to any array offset. + */ + public static int getIndirectBufferByteOffset(Object buf) { + if (buf == null) { + return 0; + } + if (buf instanceof Buffer) { + int pos = ((Buffer) buf).position(); + if (buf instanceof ByteBuffer) { + return (((ByteBuffer) buf).arrayOffset() + pos); + } else if (buf instanceof FloatBuffer) { + return (SIZEOF_FLOAT * (((FloatBuffer) buf).arrayOffset() + pos)); + } else if (buf instanceof IntBuffer) { + return (SIZEOF_INT * (((IntBuffer) buf).arrayOffset() + pos)); + } else if (buf instanceof ShortBuffer) { + return (SIZEOF_SHORT * (((ShortBuffer) buf).arrayOffset() + pos)); + }else if(Platform.isJavaSE()) { + if (buf instanceof DoubleBuffer) { + return (SIZEOF_DOUBLE * (((DoubleBuffer) buf).arrayOffset() + pos)); + } else if (buf instanceof LongBuffer) { + return (SIZEOF_LONG * (((LongBuffer) buf).arrayOffset() + pos)); + } else if (buf instanceof CharBuffer) { + return (SIZEOF_CHAR * (((CharBuffer) buf).arrayOffset() + pos)); + } + } + } else if (buf instanceof PointerBuffer) { + PointerBuffer pointerBuffer = (PointerBuffer) buf; + return PointerBuffer.elementSize() * (pointerBuffer.arrayOffset() + pointerBuffer.position()); + } + + throw new RuntimeException("Unknown buffer type " + buf.getClass().getName()); + } + + + //---------------------------------------------------------------------- + // Copy routines (type-to-type) + // + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed ByteBuffer into + * a newly-allocated direct ByteBuffer. The returned buffer will + * have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static ByteBuffer copyByteBuffer(ByteBuffer orig) { + ByteBuffer dest = newDirectByteBuffer(orig.remaining()); + dest.put(orig); + dest.rewind(); + return dest; + } + + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed FloatBuffer + * into a newly-allocated direct FloatBuffer. The returned buffer + * will have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static FloatBuffer copyFloatBuffer(FloatBuffer orig) { + return copyFloatBufferAsByteBuffer(orig).asFloatBuffer(); + } + + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed IntBuffer + * into a newly-allocated direct IntBuffer. The returned buffer + * will have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static IntBuffer copyIntBuffer(IntBuffer orig) { + return copyIntBufferAsByteBuffer(orig).asIntBuffer(); + } + + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed ShortBuffer + * into a newly-allocated direct ShortBuffer. The returned buffer + * will have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static ShortBuffer copyShortBuffer(ShortBuffer orig) { + return copyShortBufferAsByteBuffer(orig).asShortBuffer(); + } + + //---------------------------------------------------------------------- + // Copy routines (type-to-ByteBuffer) + // + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed FloatBuffer + * into a newly-allocated direct ByteBuffer. The returned buffer + * will have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static ByteBuffer copyFloatBufferAsByteBuffer(FloatBuffer orig) { + ByteBuffer dest = newDirectByteBuffer(orig.remaining() * SIZEOF_FLOAT); + dest.asFloatBuffer().put(orig); + dest.rewind(); + return dest; + } + + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed IntBuffer into + * a newly-allocated direct ByteBuffer. The returned buffer will + * have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static ByteBuffer copyIntBufferAsByteBuffer(IntBuffer orig) { + ByteBuffer dest = newDirectByteBuffer(orig.remaining() * SIZEOF_INT); + dest.asIntBuffer().put(orig); + dest.rewind(); + return dest; + } + + /** + * Copies the <i>remaining</i> elements (as defined by + * <code>limit() - position()</code>) in the passed ShortBuffer + * into a newly-allocated direct ByteBuffer. The returned buffer + * will have its byte order set to the host platform's native byte + * order. The position of the newly-allocated buffer will be zero, + * and the position of the passed buffer is unchanged (though its + * mark is changed). + */ + public static ByteBuffer copyShortBufferAsByteBuffer(ShortBuffer orig) { + ByteBuffer dest = newDirectByteBuffer(orig.remaining() * SIZEOF_SHORT); + dest.asShortBuffer().put(orig); + dest.rewind(); + return dest; + } + + //---------------------------------------------------------------------- + // Conversion routines + // + public final static FloatBuffer getFloatBuffer(DoubleBuffer source) { + source.rewind(); + FloatBuffer dest = newDirectFloatBuffer(source.limit()); + while (source.hasRemaining()) { + dest.put((float) source.get()); + } + return dest; + } + + //---------------------------------------------------------------------- + // Convenient put methods with generic target Buffer + // + public static Buffer put(Buffer dest, Buffer src) { + if ((dest instanceof ByteBuffer) && (src instanceof ByteBuffer)) { + return ((ByteBuffer) dest).put((ByteBuffer) src); + } else if ((dest instanceof ShortBuffer) && (src instanceof ShortBuffer)) { + return ((ShortBuffer) dest).put((ShortBuffer) src); + } else if ((dest instanceof IntBuffer) && (src instanceof IntBuffer)) { + return ((IntBuffer) dest).put((IntBuffer) src); + } else if ((dest instanceof FloatBuffer) && (src instanceof FloatBuffer)) { + return ((FloatBuffer) dest).put((FloatBuffer) src); + } else if (Platform.isJavaSE()) { + if ((dest instanceof LongBuffer) && (src instanceof LongBuffer)) { + return ((LongBuffer) dest).put((LongBuffer) src); + } else if ((dest instanceof DoubleBuffer) && (src instanceof DoubleBuffer)) { + return ((DoubleBuffer) dest).put((DoubleBuffer) src); + } else if ((dest instanceof CharBuffer) && (src instanceof CharBuffer)) { + return ((CharBuffer) dest).put((CharBuffer) src); + } + } + throw new RuntimeException("Incompatible Buffer classes: dest = " + dest.getClass().getName() + ", src = " + src.getClass().getName()); + } + + public static Buffer putb(Buffer dest, byte v) { + if (dest instanceof ByteBuffer) { + return ((ByteBuffer) dest).put(v); + } else if (dest instanceof ShortBuffer) { + return ((ShortBuffer) dest).put((short) v); + } else if (dest instanceof IntBuffer) { + return ((IntBuffer) dest).put((int) v); + } else { + throw new RuntimeException("Byte doesn't match Buffer Class: " + dest); + } + } + + public static Buffer puts(Buffer dest, short v) { + if (dest instanceof ShortBuffer) { + return ((ShortBuffer) dest).put(v); + } else if (dest instanceof IntBuffer) { + return ((IntBuffer) dest).put((int) v); + } else { + throw new RuntimeException("Short doesn't match Buffer Class: " + dest); + } + } + + public static void puti(Buffer dest, int v) { + if (dest instanceof IntBuffer) { + ((IntBuffer) dest).put(v); + } else { + throw new RuntimeException("Integer doesn't match Buffer Class: " + dest); + } + } + + public static void putf(Buffer dest, float v) { + if (dest instanceof FloatBuffer) { + ((FloatBuffer) dest).put(v); +/* TODO FixedPoint required + } else if (dest instanceof IntBuffer) { + ((IntBuffer) dest).put(FixedPoint.toFixed(v)); +*/ + } else { + throw new RuntimeException("Float doesn't match Buffer Class: " + dest); + } + } + public static void putd(Buffer dest, double v) { + if (dest instanceof FloatBuffer) { + ((FloatBuffer) dest).put((float) v); + } else { + throw new RuntimeException("Double doesn't match Buffer Class: " + dest); + } + } + + public static void rangeCheck(byte[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(char[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(short[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(int[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(long[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(float[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(double[] array, int offset, int minElementsRemaining) { + if (array == null) { + return; + } + + if (array.length < offset + minElementsRemaining) { + throw new ArrayIndexOutOfBoundsException("Required " + minElementsRemaining + " elements in array, only had " + (array.length - offset)); + } + } + + public static void rangeCheck(Buffer buffer, int minElementsRemaining) { + if (buffer == null) { + return; + } + + if (buffer.remaining() < minElementsRemaining) { + throw new IndexOutOfBoundsException("Required " + minElementsRemaining + " remaining elements in buffer, only had " + buffer.remaining()); + } + } + + public static void rangeCheckBytes(Object buffer, int minBytesRemaining) { + if (buffer == null) { + return; + } + + int bytesRemaining = 0; + if (buffer instanceof Buffer) { + int elementsRemaining = ((Buffer) buffer).remaining(); + if (buffer instanceof ByteBuffer) { + bytesRemaining = elementsRemaining; + } else if (buffer instanceof FloatBuffer) { + bytesRemaining = elementsRemaining * SIZEOF_FLOAT; + } else if (buffer instanceof IntBuffer) { + bytesRemaining = elementsRemaining * SIZEOF_INT; + } else if (buffer instanceof ShortBuffer) { + bytesRemaining = elementsRemaining * SIZEOF_SHORT; + }else if(Platform.isJavaSE()) { + if (buffer instanceof DoubleBuffer) { + bytesRemaining = elementsRemaining * SIZEOF_DOUBLE; + } else if (buffer instanceof LongBuffer) { + bytesRemaining = elementsRemaining * SIZEOF_LONG; + } else if (buffer instanceof CharBuffer) { + bytesRemaining = elementsRemaining * SIZEOF_CHAR; + } + } + } else if (buffer instanceof PointerBuffer) { + PointerBuffer pointerBuffer = (PointerBuffer) buffer; + bytesRemaining = pointerBuffer.remaining() * PointerBuffer.elementSize(); + } + if (bytesRemaining < minBytesRemaining) { + throw new IndexOutOfBoundsException("Required " + minBytesRemaining + " remaining bytes in buffer, only had " + bytesRemaining); + } + } + +} |