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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.image.impl;
import com.sun.javafx.image.BytePixelAccessor;
import com.sun.javafx.image.BytePixelGetter;
import com.sun.javafx.image.BytePixelSetter;
import com.sun.javafx.image.ByteToBytePixelConverter;
import java.nio.ByteBuffer;
abstract class BaseByteToByteConverter
implements ByteToBytePixelConverter
{
protected final BytePixelGetter getter;
protected final BytePixelSetter setter;
protected final int nSrcElems;
protected final int nDstElems;
BaseByteToByteConverter(BytePixelGetter getter, BytePixelSetter setter) {
this.getter = getter;
this.setter = setter;
this.nSrcElems = getter.getNumElements();
this.nDstElems = setter.getNumElements();
}
@Override
public final BytePixelGetter getGetter() {
return getter;
}
@Override
public final BytePixelSetter getSetter() {
return setter;
}
abstract void doConvert(byte srcarr[], int srcoff, int srcscanbytes,
byte dstarr[], int dstoff, int dstscanbytes,
int w, int h);
abstract void doConvert(ByteBuffer srcbuf, int srcoff, int srcscanbytes,
ByteBuffer dstbuf, int dstoff, int dstscanbytes,
int w, int h);
@Override
public final void convert(byte srcarr[], int srcoff, int srcscanbytes,
byte dstarr[], int dstoff, int dstscanbytes,
int w, int h)
{
if (w <= 0 || h <= 0) return;
if (srcscanbytes == w * nSrcElems &&
dstscanbytes == w * nDstElems)
{
w *= h;
h = 1;
}
doConvert(srcarr, srcoff, srcscanbytes,
dstarr, dstoff, dstscanbytes,
w, h);
}
@Override
public final void convert(ByteBuffer srcbuf, int srcoff, int srcscanbytes,
ByteBuffer dstbuf, int dstoff, int dstscanbytes,
int w, int h)
{
if (w <= 0 || h <= 0) return;
if (srcscanbytes == w * nSrcElems &&
dstscanbytes == w * nDstElems)
{
w *= h;
h = 1;
}
if (srcbuf.hasArray() && dstbuf.hasArray()) {
srcoff += srcbuf.arrayOffset();
dstoff += dstbuf.arrayOffset();
doConvert(srcbuf.array(), srcoff, srcscanbytes,
dstbuf.array(), dstoff, dstscanbytes,
w, h);
} else {
doConvert(srcbuf, srcoff, srcscanbytes,
dstbuf, dstoff, dstscanbytes,
w, h);
}
}
@Override
public final void convert(ByteBuffer srcbuf, int srcoff, int srcscanbytes,
byte dstarr[], int dstoff, int dstscanbytes,
int w, int h)
{
if (w <= 0 || h <= 0) return;
if (srcscanbytes == w * nSrcElems &&
dstscanbytes == w * nDstElems)
{
w *= h;
h = 1;
}
if (srcbuf.hasArray()) {
byte srcarr[] = srcbuf.array();
srcoff += srcbuf.arrayOffset();
doConvert(srcarr, srcoff, srcscanbytes,
dstarr, dstoff, dstscanbytes,
w, h);
} else {
ByteBuffer dstbuf = ByteBuffer.wrap(dstarr);
doConvert(srcbuf, srcoff, srcscanbytes,
dstbuf, dstoff, dstscanbytes,
w, h);
}
}
@Override
public final void convert(byte srcarr[], int srcoff, int srcscanbytes,
ByteBuffer dstbuf, int dstoff, int dstscanbytes,
int w, int h)
{
if (w <= 0 || h <= 0) return;
if (srcscanbytes == w * nSrcElems &&
dstscanbytes == w * nDstElems)
{
w *= h;
h = 1;
}
if (dstbuf.hasArray()) {
byte dstarr[] = dstbuf.array();
dstoff += dstbuf.arrayOffset();
doConvert(srcarr, srcoff, srcscanbytes,
dstarr, dstoff, dstscanbytes,
w, h);
} else {
ByteBuffer srcbuf = ByteBuffer.wrap(srcarr);
doConvert(srcbuf, srcoff, srcscanbytes,
dstbuf, dstoff, dstscanbytes,
w, h);
}
}
static ByteToBytePixelConverter create(BytePixelAccessor fmt) {
return new ByteAnyToSameConverter(fmt);
}
static class ByteAnyToSameConverter extends BaseByteToByteConverter {
ByteAnyToSameConverter(BytePixelAccessor fmt) {
super(fmt, fmt);
}
@Override
void doConvert(byte srcarr[], int srcoff, int srcscanbytes,
byte dstarr[], int dstoff, int dstscanbytes,
int w, int h)
{
while (--h >= 0) {
System.arraycopy(srcarr, srcoff, dstarr, dstoff, w * nSrcElems);
srcoff += srcscanbytes;
dstoff += dstscanbytes;
}
}
@Override
void doConvert(ByteBuffer srcbuf, int srcoff, int srcscanbytes,
ByteBuffer dstbuf, int dstoff, int dstscanbytes,
int w, int h)
{
int srclimit = srcbuf.limit();
int origsrcpos = srcbuf.position();
int origdstpos = dstbuf.position();
try {
while (--h >= 0) {
int newlimit = srcoff + w * nSrcElems;
if (newlimit > srclimit) {
throw new IndexOutOfBoundsException("" + srclimit);
}
srcbuf.limit(newlimit);
srcbuf.position(srcoff);
dstbuf.position(dstoff);
dstbuf.put(srcbuf);
srcoff += srcscanbytes;
dstoff += dstscanbytes;
}
} finally {
srcbuf.limit(srclimit);
srcbuf.position(origsrcpos);
dstbuf.position(origdstpos);
}
}
}
public static ByteToBytePixelConverter
createReorderer(BytePixelGetter getter, BytePixelSetter setter,
int c0, int c1, int c2, int c3)
{
return new FourByteReorderer(getter, setter, c0, c1, c2, c3);
}
static class FourByteReorderer extends BaseByteToByteConverter {
private final int c0, c1, c2, c3;
FourByteReorderer(BytePixelGetter getter, BytePixelSetter setter,
int c0, int c1, int c2, int c3)
{
super(getter, setter);
this.c0 = c0;
this.c1 = c1;
this.c2 = c2;
this.c3 = c3;
}
@Override
void doConvert(byte srcarr[], int srcoff, int srcscanbytes,
byte dstarr[], int dstoff, int dstscanbytes,
int w, int h)
{
srcscanbytes -= w * 4;
dstscanbytes -= w * 4;
while (--h >= 0) {
for (int x = 0; x < w; x++) {
// load all then store in case the buffers point to
// the same memory
byte b0 = srcarr[srcoff + c0];
byte b1 = srcarr[srcoff + c1];
byte b2 = srcarr[srcoff + c2];
byte b3 = srcarr[srcoff + c3];
dstarr[dstoff++] = b0;
dstarr[dstoff++] = b1;
dstarr[dstoff++] = b2;
dstarr[dstoff++] = b3;
srcoff += 4;
}
srcoff += srcscanbytes;
dstoff += dstscanbytes;
}
}
@Override
void doConvert(ByteBuffer srcbuf, int srcoff, int srcscanbytes,
ByteBuffer dstbuf, int dstoff, int dstscanbytes,
int w, int h)
{
srcscanbytes -= w * 4;
dstscanbytes -= w * 4;
while (--h >= 0) {
for (int x = 0; x < w; x++) {
// load all then store in case the buffers point to
// the same memory
byte b0 = srcbuf.get(srcoff + c0);
byte b1 = srcbuf.get(srcoff + c1);
byte b2 = srcbuf.get(srcoff + c2);
byte b3 = srcbuf.get(srcoff + c3);
dstbuf.put(dstoff , b0);
dstbuf.put(dstoff + 1, b1);
dstbuf.put(dstoff + 2, b2);
dstbuf.put(dstoff + 3, b3);
srcoff += 4;
dstoff += 4;
}
srcoff += srcscanbytes;
dstoff += dstscanbytes;
}
}
}
}