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;
34 import java.io.ByteArrayOutputStream;
36 import java.io.FileOutputStream;
37 import java.io.IOException;
38 import java.io.OutputStream;
40 import javax.media.jai.InterpolationBilinear;
41 import javax.media.jai.JAI;
42 import javax.media.jai.ParameterBlockJAI;
43 import javax.media.jai.PlanarImage;
45 import mir.log.LoggerWrapper;
47 import com.sun.media.jai.codec.ByteArraySeekableStream;
48 import com.sun.media.jai.codec.FileSeekableStream;
49 import com.sun.media.jai.codec.SeekableStream;
53 * <p>Title: Image processor</p>
54 * <p>Description: Temporary image processor class. (Made for the immediate needs of CMI brasil.
55 * Will become obsolete when mh's media handler rewrite is finished. </p>
60 public class ImageProcessor {
61 static final LoggerWrapper logger = new LoggerWrapper("media");
63 private PlanarImage image;
64 private PlanarImage scaledImage;
66 private byte[] iconData;
67 private byte[] imageData;
68 private int iconWidth;
69 private int iconHeight;
70 private String imageType;
72 // public ImageScaler(
74 public ImageProcessor(SeekableStream anImageStream, String anImageType) throws IOException {
75 image = JAI.create("stream", anImageStream);
77 imageType = anImageType;
80 public ImageProcessor(File aFile, String anImageType) throws IOException {
81 this(new FileSeekableStream(aFile), anImageType);
84 public ImageProcessor(byte[] anImageData, String anImageType) throws IOException {
85 this(new ByteArraySeekableStream(anImageData), anImageType);
88 public void descaleImage(int aMaxSize) throws java.io.IOException {
89 descaleImage(aMaxSize, 0);
92 public void descaleImage(int aMaxSize, float aMinDescale) throws java.io.IOException {
93 descaleImage(aMaxSize, aMaxSize, aMinDescale, 0);
96 public void descaleImage(int aMaxSize, int aMinResize) throws java.io.IOException {
97 descaleImage(aMaxSize, aMaxSize, 0, aMinResize);
100 public void descaleImage(int aMaxSize, float aMinDescale, int aMinResize) throws java.io.IOException {
101 descaleImage(aMaxSize, aMaxSize, aMinDescale, aMinResize);
106 * Resizes an image to fit inside <code>aMaxWidth</code> and <code>aMaxHeight</code>, provided
107 * this requires at least <code>aMinResize</code> pixels will be removed from either the width or
114 * @throws java.io.IOException
116 public void descaleImage(int aMaxWidth, int aMaxHeight, float aMinDescale, int aMinResize) throws java.io.IOException {
120 if ((aMaxWidth>0 && image.getWidth()>aMaxWidth+aMinResize-1) || (aMaxHeight>0 && image.getHeight()>aMaxHeight+aMinResize-1))
122 logger.info("Scaling image");
126 if (aMaxWidth>0 && image.getWidth()>aMaxWidth) {
127 scale = Math.min(scale, (float) aMaxWidth / (float) image.getWidth());
129 if (aMaxHeight>0 && image.getHeight()>aMaxHeight) {
130 scale = Math.min(scale, (float) aMaxHeight / (float) image.getHeight());
133 if (1-scale>aMinDescale) {
139 public void scaleImage(float aScalingFactor) throws java.io.IOException {
140 ParameterBlockJAI params = new ParameterBlockJAI("scale");
141 params.addSource(image);
143 params.setParameter("xScale", aScalingFactor);
144 params.setParameter("yScale", aScalingFactor);
145 params.setParameter("xTrans", 0.0F);
146 params.setParameter("yTrans", 0.0F);
147 params.setParameter("interpolation", new InterpolationBilinear());
148 scaledImage = JAI.create("scale", params);
151 public int getWidth() {
152 return image.getWidth();
155 public int getHeight() {
156 return image.getHeight();
159 public int getScaledWidth() {
160 return scaledImage.getWidth();
163 public int getScaledHeight() {
164 return scaledImage.getHeight();
167 public void writeScaledData(OutputStream aStream) {
168 JAI.create("encode", scaledImage, aStream, imageType, null);
171 public byte[] getScaledData() {
172 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
173 writeScaledData(outputStream);
174 return outputStream.toByteArray();
177 public void writeScaledData(File aFile) throws IOException {
178 writeScaledData(new FileOutputStream(aFile));