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 any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
31 package mircoders.media;
33 import java.io.ByteArrayOutputStream;
35 import java.io.FileOutputStream;
36 import java.io.IOException;
37 import java.io.OutputStream;
39 import javax.media.jai.InterpolationBilinear;
40 import javax.media.jai.JAI;
41 import javax.media.jai.ParameterBlockJAI;
42 import javax.media.jai.PlanarImage;
44 import mir.log.LoggerWrapper;
46 import com.sun.media.jai.codec.ByteArraySeekableStream;
47 import com.sun.media.jai.codec.FileSeekableStream;
48 import com.sun.media.jai.codec.SeekableStream;
52 * <p>Title: Image processor</p>
53 * <p>Description: Temporary image processor class. (Made for the immediate needs of CMI brasil.
54 * Will become obsolete when mh's media handler rewrite is finished. </p>
59 public class ImageProcessor {
60 static final LoggerWrapper logger = new LoggerWrapper("media");
62 private PlanarImage image;
63 private PlanarImage scaledImage;
65 private byte[] iconData;
66 private byte[] imageData;
67 private int iconWidth;
68 private int iconHeight;
69 private String imageType;
71 // public ImageScaler(
73 public ImageProcessor(SeekableStream anImageStream, String anImageType) throws IOException {
74 image = JAI.create("stream", anImageStream);
76 imageType = anImageType;
79 public ImageProcessor(File aFile, String anImageType) throws IOException {
80 this(new FileSeekableStream(aFile), anImageType);
83 public ImageProcessor(byte[] anImageData, String anImageType) throws IOException {
84 this(new ByteArraySeekableStream(anImageData), anImageType);
87 public void descaleImage(int aMaxSize) throws java.io.IOException {
88 descaleImage(aMaxSize, 0);
91 public void descaleImage(int aMaxSize, float aMinDescale) throws java.io.IOException {
92 descaleImage(aMaxSize, aMaxSize, aMinDescale, 0);
95 public void descaleImage(int aMaxSize, int aMinResize) throws java.io.IOException {
96 descaleImage(aMaxSize, aMaxSize, 0, aMinResize);
99 public void descaleImage(int aMaxSize, float aMinDescale, int aMinResize) throws java.io.IOException {
100 descaleImage(aMaxSize, aMaxSize, aMinDescale, aMinResize);
105 * Resizes an image to fit inside <code>aMaxWidth</code> and <code>aMaxHeight</code>, provided
106 * this requires at least <code>aMinResize</code> pixels will be removed from either the width or
113 * @throws java.io.IOException
115 public void descaleImage(int aMaxWidth, int aMaxHeight, float aMinDescale, int aMinResize) throws java.io.IOException {
119 if ((aMaxWidth>0 && image.getWidth()>aMaxWidth+aMinResize-1) || (aMaxHeight>0 && image.getHeight()>aMaxHeight+aMinResize-1))
121 logger.info("Scaling image");
125 if (aMaxWidth>0 && image.getWidth()>aMaxWidth) {
126 scale = Math.min(scale, (float) aMaxWidth / (float) image.getWidth());
128 if (aMaxHeight>0 && image.getHeight()>aMaxHeight) {
129 scale = Math.min(scale, (float) aMaxHeight / (float) image.getHeight());
132 if (1-scale>aMinDescale) {
138 public void scaleImage(float aScalingFactor) throws java.io.IOException {
139 ParameterBlockJAI params = new ParameterBlockJAI("scale");
140 params.addSource(image);
142 params.setParameter("xScale", aScalingFactor);
143 params.setParameter("yScale", aScalingFactor);
144 params.setParameter("xTrans", 0.0F);
145 params.setParameter("yTrans", 0.0F);
146 params.setParameter("interpolation", new InterpolationBilinear());
147 scaledImage = JAI.create("scale", params);
150 public int getWidth() {
151 return image.getWidth();
154 public int getHeight() {
155 return image.getHeight();
158 public int getScaledWidth() {
159 return scaledImage.getWidth();
162 public int getScaledHeight() {
163 return scaledImage.getHeight();
166 public void writeScaledData(OutputStream aStream) {
167 JAI.create("encode", scaledImage, aStream, imageType, null);
170 public byte[] getScaledData() {
171 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
172 writeScaledData(outputStream);
173 return outputStream.toByteArray();
176 public void writeScaledData(File aFile) throws IOException {
177 writeScaledData(new FileOutputStream(aFile));