| /* Copyright (C) 2004 Free Software Foundation |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package java.awt.image; |
| |
| import java.awt.Point; |
| |
| /** |
| * The BufferedImageFilter class wraps BufferedImageOp objects in a Filter. |
| * |
| * When pixels are pushed through the filter, we create a BufferedImage, |
| * apply the BufferedImageOp, and pass the filtered pixels to the base class. |
| * |
| * @author jlquinn@optonline.net |
| */ |
| public class BufferedImageFilter extends ImageFilter implements Cloneable |
| { |
| private BufferedImageOp op; |
| |
| /** |
| * |
| */ |
| public BufferedImageFilter(BufferedImageOp op) |
| { |
| super(); |
| if (op == null) |
| throw new NullPointerException("BufferedImageFilter null" |
| + " op in constructor"); |
| this.op = op; |
| } |
| |
| /** |
| * @return Returns the contained BufferedImageOp. |
| */ |
| public BufferedImageOp getBufferedImageOp() |
| { |
| return op; |
| } |
| |
| // FIXME: Definitely not sure this is the right thing. I'm not sure how to |
| // create a compatible sample model that incorporates scansize != w. I |
| // asume off is handled by the db itself. |
| public void setPixels(int x, int y, int w, int h, ColorModel model, |
| byte[] pixels, int off, int scansize) |
| { |
| // Create an input BufferedImage |
| DataBufferByte db = new DataBufferByte(pixels, scansize * h + off, off); |
| SampleModel sm = model.createCompatibleSampleModel(scansize, h); |
| WritableRaster wr = new WritableRaster(sm, db, new Point(0, 0)); |
| BufferedImage in = |
| new BufferedImage(model, wr, model.isAlphaPremultiplied(), null); |
| BufferedImage out = op.createCompatibleDestImage(in, model); |
| op.filter(in, out); |
| DataBuffer dbout = out.getRaster().getDataBuffer(); |
| super.setPixels(0, 0, w, h, model, ((DataBufferByte)dbout).getData(), 0, |
| scansize); |
| } |
| |
| // FIXME: Definitely not sure this is the right thing. I'm not sure how |
| // to create a compatible sample model that incorporates |
| // scansize != w. I asume off is handled by the db itself. |
| public void setPixels(int x, int y, int w, int h, ColorModel model, |
| int[] pixels, int off, int scansize) |
| { |
| // Create an input BufferedImage |
| DataBufferInt db = new DataBufferInt(pixels, scansize * h + off, off); |
| SampleModel sm = model.createCompatibleSampleModel(scansize, h); |
| WritableRaster wr = new WritableRaster(sm, db, new Point(0, 0)); |
| BufferedImage in = |
| new BufferedImage(model, wr, model.isAlphaPremultiplied(), null); |
| BufferedImage out = op.createCompatibleDestImage(in, model); |
| op.filter(in, out); |
| DataBuffer dbout = out.getRaster().getDataBuffer(); |
| super.setPixels(0, 0, w, h, model, ((DataBufferInt)dbout).getData(), 0, |
| scansize); |
| } |
| } |