2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
32 package mircoders.media;
35 import java.awt.image.renderable.ParameterBlock;
36 import javax.media.jai.*;
37 import com.sun.media.jai.codec.*;
43 * <p>Title: Image processor</p>
44 * <p>Description: Temporary image processor class. (Made for the immediate needs of CMI brasil.
45 * Will become obsolete when mh's media handler rewrite is finished. </p>
50 public class ImageProcessor {
51 static final LoggerWrapper logger = new LoggerWrapper("media");
53 private static final int DEFAULT_MAX_ICON_SIZE=120;
54 private static final int DEFAULT_MAX_IMAGE_SIZE=640;
56 private PlanarImage image;
57 private PlanarImage scaledImage;
59 private byte[] iconData;
60 private byte[] imageData;
61 private int iconWidth;
62 private int iconHeight;
63 private String imageType;
65 // public ImageScaler(
67 public ImageProcessor(SeekableStream anImageStream, String anImageType) throws IOException {
68 image = JAI.create("stream", anImageStream);
70 imageType = anImageType;
73 public ImageProcessor(File aFile, String anImageType) throws IOException {
74 this(new FileSeekableStream(aFile), anImageType);
77 public ImageProcessor(byte[] anImageData, String anImageType) throws IOException {
78 this(new ByteArraySeekableStream(anImageData), anImageType);
81 public void descaleImage(int aMaxSize) throws java.io.IOException {
82 descaleImage(aMaxSize, 0);
85 public void descaleImage(int aMaxSize, float aMinDescale) throws java.io.IOException {
86 descaleImage(aMaxSize, aMaxSize, aMinDescale);
89 public void descaleImage(int aMaxWidth, int aMaxHeight, float aMinDescale) throws java.io.IOException {
93 if ((aMaxWidth>0 && image.getWidth()>aMaxWidth) || (aMaxHeight>0 && image.getHeight()>aMaxHeight))
95 logger.info("Scaling image");
99 if (aMaxWidth>0 && image.getWidth()>aMaxWidth) {
100 scale = Math.min(scale, (float) aMaxWidth / (float) image.getWidth());
102 if (aMaxHeight>0 && image.getHeight()>aMaxHeight) {
103 scale = Math.min(scale, (float) aMaxHeight / (float) image.getHeight());
106 if (1-scale>aMinDescale) {
112 public void scaleImage(float aScalingFactor) throws java.io.IOException {
113 ParameterBlockJAI params = new ParameterBlockJAI("scale");
114 params.addSource(image);
116 params.setParameter("xScale", aScalingFactor);
117 params.setParameter("yScale", aScalingFactor);
118 params.setParameter("xTrans", 0.0F);
119 params.setParameter("yTrans", 0.0F);
120 params.setParameter("interpolation", new InterpolationBilinear());
121 scaledImage = JAI.create("scale", params);
124 public int getWidth() {
125 return image.getWidth();
128 public int getHeight() {
129 return image.getWidth();
132 public int getScaledWidth() {
133 return scaledImage.getWidth();
136 public int getScaledHeight() {
137 return scaledImage.getWidth();
140 public void writeScaledData(OutputStream aStream) {
141 JAI.create("encode", scaledImage, aStream, imageType, null);
144 public byte[] getScaledData() {
145 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
146 writeScaledData(outputStream);
147 return outputStream.toByteArray();
150 public void writeScaledData(File aFile) throws IOException {
151 writeScaledData(new FileOutputStream(aFile));