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Diffstat (limited to 'src/java/com/jogamp/common/nio/Int64Buffer.java')
-rw-r--r-- | src/java/com/jogamp/common/nio/Int64Buffer.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/java/com/jogamp/common/nio/Int64Buffer.java b/src/java/com/jogamp/common/nio/Int64Buffer.java new file mode 100644 index 0000000..d1fafb6 --- /dev/null +++ b/src/java/com/jogamp/common/nio/Int64Buffer.java @@ -0,0 +1,170 @@ +/* + * Copyright (c) 2010, Michael Bien + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions 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 Michael Bien nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Michael Bien BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +package com.jogamp.common.nio; + +import com.jogamp.common.os.Platform; +import java.nio.ByteBuffer; + +/** + * Hardware independent container for native int64_t arrays. + * + * The native values (NIO direct ByteBuffer) are always 64bit wide. + * + * @author Michael Bien + * @author Sven Gothel + */ +public abstract class Int64Buffer implements NativeBuffer/*<PointerBuffer>*/ { + + protected final ByteBuffer bb; + protected int capacity; + protected int position; + protected long[] backup; + + protected Int64Buffer(ByteBuffer bb) { + this.bb = bb; + } + + public static Int64Buffer allocate(int size) { + if (Platform.isJavaSE()) { + return new Int64BufferSE(ByteBuffer.wrap(new byte[elementSize() * size])); + } else { + return new Int64BufferME_CDC_FP(ByteBuffer.wrap(new byte[elementSize() * size])); + } + } + + public static Int64Buffer allocateDirect(int size) { + if (Platform.isJavaSE()) { + return new Int64BufferSE(Buffers.newDirectByteBuffer(elementSize() * size)); + } else { + return new Int64BufferME_CDC_FP(Buffers.newDirectByteBuffer(elementSize() * size)); + } + } + + public static Int64Buffer wrap(ByteBuffer src) { + Int64Buffer res; + if (Platform.isJavaSE()) { + res = new Int64BufferSE(src); + } else { + res = new Int64BufferME_CDC_FP(src); + } + res.updateBackup(); + return res; + + } + + void updateBackup() { + for (int i = 0; i < capacity; i++) { + backup[i] = get(i); + } + } + + int arrayOffset() { + return 0; + } + + public static int elementSize() { + return Buffers.SIZEOF_LONG; + } + + public int limit() { + return capacity; + } + + public int capacity() { + return capacity; + } + + public int position() { + return position; + } + + public Int64Buffer position(int newPos) { + if (0 > newPos || newPos >= capacity) { + throw new IndexOutOfBoundsException("Sorry to interrupt, but the position "+newPos+" was out of bounds. " + + "My capacity is "+capacity()+"."); + } + position = newPos; + return this; + } + + public int remaining() { + return capacity - position; + } + + public boolean hasRemaining() { + return position < capacity; + } + + public Int64Buffer rewind() { + position = 0; + return this; + } + + boolean hasArray() { + return true; + } + + public long[] array() { + return backup; + } + + public ByteBuffer getBuffer() { + return bb; + } + + public boolean isDirect() { + return bb.isDirect(); + } + + public long get() { + long r = get(position); + position++; + return r; + } + + public abstract long get(int idx); + + public abstract Int64Buffer put(int index, long value); + + public abstract Int64Buffer put(long value); + + public Int64Buffer put(Int64Buffer src) { + if (remaining() < src.remaining()) { + throw new IndexOutOfBoundsException(); + } + while (src.hasRemaining()) { + put(src.get()); + } + return this; + } + + public String toString() { + return "Int64Buffer[capacity "+capacity+", position "+position+", elementSize "+elementSize()+", ByteBuffer.capacity "+bb.capacity()+"]"; + } + +} |