digilib-old: servlet/src/digilib/image/JAIDocuImage.java annotate

annotate servlet/src/digilib/image/JAIDocuImage.java @ 566:50f291d808b1 digilibPDF

starting stream support

author	robcast
date	Mon, 20 Dec 2010 11:57:55 +0100
parents	4c51d71aef13
children	beeedf90cb81

rev	line source
1 0ff3ede32060 Initial revision robcast parents: diff changeset	1 /* JAIDocuImage -- Image class implementation using JAI (Java Advanced Imaging)
0ff3ede32060 Initial revision robcast parents: diff changeset	2
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	3 Digital Image Library servlet components
1 0ff3ede32060 Initial revision robcast parents: diff changeset	4
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	5 Copyright (C) 2001, 2002, 2003 Robert Casties (robcast@mail.berlios.de)
1 0ff3ede32060 Initial revision robcast parents: diff changeset	6
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	7 This program is free software; you can redistribute it and/or modify it
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	8 under the terms of the GNU General Public License as published by the
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	9 Free Software Foundation; either version 2 of the License, or (at your
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	10 option) any later version.
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	11
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	12 Please read license.txt for the full details. A copy of the GPL
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	13 may be found at http://www.gnu.org/copyleft/lgpl.html
1 0ff3ede32060 Initial revision robcast parents: diff changeset	14
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	15 You should have received a copy of the GNU General Public License
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	16 along with this program; if not, write to the Free Software
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1 0ff3ede32060 Initial revision robcast parents: diff changeset	18
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	19 */
1 0ff3ede32060 Initial revision robcast parents: diff changeset	20
0ff3ede32060 Initial revision robcast parents: diff changeset	21 package digilib.image;
0ff3ede32060 Initial revision robcast parents: diff changeset	22
470 16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	23 import java.awt.Rectangle;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	24 import java.awt.RenderingHints;
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	25 import java.awt.image.RenderedImage;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	26 import java.awt.image.renderable.ParameterBlock;
462 03ff7238c9d4 second try for flashpix support (doesn't work currently...) robcast parents: 208 diff changeset	27 import java.io.File;
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	28 import java.io.IOException;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	29 import java.io.OutputStream;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	30 import java.util.ArrayList;
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	31 import java.util.Enumeration;
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	32 import java.util.Iterator;
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	33 import java.util.List;
1 0ff3ede32060 Initial revision robcast parents: diff changeset	34
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	35 import javax.media.jai.BorderExtender;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	36 import javax.media.jai.Interpolation;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	37 import javax.media.jai.JAI;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	38 import javax.media.jai.KernelJAI;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	39 import javax.media.jai.ParameterBlockJAI;
462 03ff7238c9d4 second try for flashpix support (doesn't work currently...) robcast parents: 208 diff changeset	40 import javax.media.jai.RenderedOp;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	41 import javax.media.jai.operator.TransposeDescriptor;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	42 import javax.media.jai.operator.TransposeType;
1 0ff3ede32060 Initial revision robcast parents: diff changeset	43
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	44 import com.sun.media.jai.codec.ImageCodec;
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	45
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	46 import digilib.io.FileOpException;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	47 import digilib.io.FileOps;
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	48 import digilib.io.ImageFile;
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	49 import digilib.io.ImageFileset;
566 50f291d808b1 starting stream support robcast parents: 564 diff changeset	50 import digilib.io.ImageInput;
1 0ff3ede32060 Initial revision robcast parents: diff changeset	51
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	52 /** A DocuImage implementation using Java Advanced Imaging Library. */
564 4c51d71aef13 more reshuffling of classes robcast parents: 563 diff changeset	53 public class JAIDocuImage extends ImageInfoDocuImage {
1 0ff3ede32060 Initial revision robcast parents: diff changeset	54
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	55 protected RenderedImage img;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	56
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	57 protected Interpolation interpol = null;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	58
470 16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	59 /*
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	60 * static { // we could set our own tile cache size here TileCache tc =
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	61 * JAI.createTileCache(10010241024);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	62 * JAI.getDefaultInstance().setTileCache(tc); }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	63 */
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	64
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	65 public boolean isSubimageSupported() {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	66 return true;
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	67 }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	68
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	69 /*
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	70 * Real setQuality implementation. Creates the correct Interpolation.
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	71 */
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	72 public void setQuality(int qual) {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	73 quality = qual;
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	74 // setup interpolation quality
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	75 if (qual > 1) {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	76 logger.debug("quality q2");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	77 interpol = Interpolation.getInstance(Interpolation.INTERP_BICUBIC);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	78 } else if (qual == 1) {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	79 logger.debug("quality q1");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	80 interpol = Interpolation.getInstance(Interpolation.INTERP_BILINEAR);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	81 } else {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	82 logger.debug("quality q0");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	83 interpol = Interpolation.getInstance(Interpolation.INTERP_NEAREST);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	84 }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	85 }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	86
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	87 /* returns a list of supported image formats */
531 9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	88 @SuppressWarnings("unchecked") // ImageCodec.getCodecs() returns a naked Enumeration
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	89 public Iterator<String> getSupportedFormats() {
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	90 Enumeration<ImageCodec> codecs = ImageCodec.getCodecs();
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	91 List<String> formats = new ArrayList<String>();
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	92 for (ImageCodec codec = codecs.nextElement(); codecs.hasMoreElements(); codec = codecs
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	93 .nextElement()) {
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	94 logger.debug("known format:"+codec.getFormatName());
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	95 formats.add(codec.getFormatName());
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	96 }
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	97 logger.debug("tilecachesize:"
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	98 + JAI.getDefaultInstance().getTileCache().getMemoryCapacity());
9cedd170b581 * PDF generation works now even with subdirectories robcast parents: 1 diff changeset	99 return formats.iterator();
1 0ff3ede32060 Initial revision robcast parents: diff changeset	100 }
462 03ff7238c9d4 second try for flashpix support (doesn't work currently...) robcast parents: 208 diff changeset	101
470 16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	102 /* Check image size and type and store in ImageFile f */
566 50f291d808b1 starting stream support robcast parents: 564 diff changeset	103 public ImageInput identify(ImageFile imageFile) throws IOException {
563 686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	104 // try parent method first
566 50f291d808b1 starting stream support robcast parents: 564 diff changeset	105 ImageInput imf = super.identify(imageFile);
563 686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	106 if (imf != null) {
686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	107 return imf;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	108 }
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	109 // fileset to store the information
563 686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	110 ImageFileset imgfs = imageFile.getParent();
686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	111 File f = imageFile.getFile();
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	112 if (f == null) {
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	113 throw new IOException("File not found!");
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	114 }
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	115 /*
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	116 * try JAI
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	117 */
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	118 logger.debug("identifying (JAI) " + f);
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	119 try {
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	120 RenderedOp img = JAI.create("fileload", f.getAbsolutePath());
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	121 ImageSize d = new ImageSize(img.getWidth(), img.getHeight());
563 686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	122 imageFile.setSize(d);
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	123 String t = FileOps.mimeForFile(f);
563 686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	124 imageFile.setMimetype(t);
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	125 // logger.debug(" format:"+t);
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	126 if (imgfs != null) {
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	127 imgfs.setAspect(d);
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	128 }
563 686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	129 logger.debug("image size: " + imageFile.getSize());
686086d6e6d6 more refactoring and rearranging robcast parents: 543 diff changeset	130 return imageFile;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	131 } catch (Exception e) {
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	132 throw new FileOpException("ERROR: unknown image file format!");
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	133 }
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	134 }
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	135
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	136 /* Load an image file into the Object. */
159 e743b853efca servlet version 1.16a4 robcast parents: 149 diff changeset	137 public void loadImage(ImageFile f) throws FileOpException {
149 04ad64b2137a Servlet version 1.14b1 robcast parents: 144 diff changeset	138 img = JAI.create("fileload", f.getFile().getAbsolutePath());
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	139 if (img == null) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	140 throw new FileOpException("Unable to load File!");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	141 }
543 919e008ab1fb more steps towards more standard java.util.concurrent design robcast parents: 536 diff changeset	142 mimeType = f.getMimetype();
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	143 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	144
470 16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	145 /* Load an image file into the Object. */
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	146 public void loadSubimage(ImageFile f, Rectangle region, int subsample)
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	147 throws FileOpException {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	148 logger.debug("loadSubimage");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	149 img = JAI.create("fileload", f.getFile().getAbsolutePath());
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	150 if ((region.width < img.getWidth())
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	151 \|\| (region.height < img.getHeight())) {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	152 // setup Crop
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	153 ParameterBlock cp = new ParameterBlock();
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	154 cp.addSource(img);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	155 cp.add((float) region.x);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	156 cp.add((float) region.y);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	157 cp.add((float) region.width);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	158 cp.add((float) region.height);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	159 logger.debug("loadSubimage: crop");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	160 img = JAI.create("crop", cp);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	161 }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	162 if (subsample > 1) {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	163 float sc = 1f / subsample;
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	164 ParameterBlockJAI sp = new ParameterBlockJAI("scale");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	165 sp.addSource(img);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	166 sp.setParameter("xScale", sc);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	167 sp.setParameter("yScale", sc);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	168 sp.setParameter("interpolation", Interpolation
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	169 .getInstance(Interpolation.INTERP_NEAREST));
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	170 // scale
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	171 logger.debug("loadSubimage: scale");
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	172 img = JAI.create("scale", sp);
543 919e008ab1fb more steps towards more standard java.util.concurrent design robcast parents: 536 diff changeset	173 mimeType = f.getMimetype();
470 16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	174 }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	175 }
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	176
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	177 /* Write the current image to an OutputStream. */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	178 public void writeImage(String mt, OutputStream ostream)
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	179 throws FileOpException {
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	180 try {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	181 // setup output
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	182 ParameterBlock pb3 = new ParameterBlock();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	183 pb3.addSource(img);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	184 pb3.add(ostream);
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	185 if (mt == "image/jpeg") {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	186 pb3.add("JPEG");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	187 } else if (mt == "image/png") {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	188 pb3.add("PNG");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	189 } else {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	190 // unknown mime type
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	191 throw new FileOpException("Unknown mime type: " + mt);
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	192 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	193 // render output
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	194 JAI.create("encode", pb3);
1 0ff3ede32060 Initial revision robcast parents: diff changeset	195
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	196 } catch (IOException e) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	197 throw new FileOpException("Error writing image.");
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	198 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	199 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	200
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	201 /**
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	202 * The width of the curent image in pixel.
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	203 *
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	204 * @return Image width in pixels.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	205 */
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	206 public int getWidth() {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	207 if (img != null) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	208 return img.getWidth();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	209 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	210 return 0;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	211 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	212
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	213 /**
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	214 * The height of the curent image in pixel.
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	215 *
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	216 * @return Image height in pixels.
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	217 */
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	218 public int getHeight() {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	219 if (img != null) {
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	220 return img.getHeight();
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	221 }
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	222 return 0;
3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	223 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	224
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	225 /* scales the current image */
149 04ad64b2137a Servlet version 1.14b1 robcast parents: 144 diff changeset	226 public void scale(double scale, double scaleY) throws ImageOpException {
208 460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	227 logger.debug("scale");
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	228 if ((scale < 1) && (img.getColorModel().getPixelSize() == 1)
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	229 && (quality > 0)) {
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	230 /*
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	231 * "SubsampleBinaryToGray" for downscaling BW
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	232 */
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	233 scaleBinary((float) scale);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	234 } else if ((scale <= 0.5) && (quality > 1)) {
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	235 /*
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	236 * blur and "Scale" for downscaling color images
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	237 */
470 16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	238 if ((scale <= 0.5) && (quality > 1)) {
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	239 int bl = (int) Math.floor(1 / scale);
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	240 // don't blur more than 3
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	241 blur(Math.min(bl, 3));
16bd70715ac3 Improved performance of JAIDocuImage for large images robcast parents: 468 diff changeset	242 }
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	243 scaleAll((float) scale);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	244 } else {
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	245 /*
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	246 * "Scale" for the rest
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	247 */
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	248 scaleAll((float) scale);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	249 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	250
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	251 // DEBUG
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	252 logger.debug("SCALE: " + scale + " ->" + img.getWidth() + "x"
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	253 + img.getHeight());
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	254
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	255 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	256
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	257 public void scaleAll(float scale) throws ImageOpException {
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	258 RenderedImage scaledImg;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	259 // DEBUG
181 afe7ff98bb71 Servlet version 1.18b1 robcast parents: 159 diff changeset	260 logger.debug("scaleAll: " + scale);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	261 ParameterBlockJAI param = new ParameterBlockJAI("Scale");
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	262 param.addSource(img);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	263 param.setParameter("xScale", scale);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	264 param.setParameter("yScale", scale);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	265 param.setParameter("interpolation", interpol);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	266 // hint with border extender
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	267 RenderingHints hint = new RenderingHints(JAI.KEY_BORDER_EXTENDER,
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	268 BorderExtender.createInstance(BorderExtender.BORDER_COPY));
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	269 // scale
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	270 scaledImg = JAI.create("Scale", param, hint);
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	271
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	272 if (scaledImg == null) {
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	273 throw new ImageOpException("Unable to scale");
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	274 }
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	275 img = scaledImg;
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	276 }
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	277
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	278 public void blur(int radius) throws ImageOpException {
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	279 RenderedImage blurredImg;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	280 int klen = Math.max(radius, 2);
468 0fc853d98820 Experiment with TileCache size (better leave it...) robcast parents: 466 diff changeset	281 logger.debug("blur: " + klen);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	282 int ksize = klen * klen;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	283 float f = 1f / ksize;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	284 float[] kern = new float[ksize];
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	285 for (int i = 0; i < ksize; i++) {
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	286 kern[i] = f;
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	287 }
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	288 KernelJAI blur = new KernelJAI(klen, klen, kern);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	289 ParameterBlockJAI param = new ParameterBlockJAI("Convolve");
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	290 param.addSource(img);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	291 param.setParameter("kernel", blur);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	292 // hint with border extender
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	293 RenderingHints hint = new RenderingHints(JAI.KEY_BORDER_EXTENDER,
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	294 BorderExtender.createInstance(BorderExtender.BORDER_COPY));
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	295 blurredImg = JAI.create("Convolve", param, hint);
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	296 if (blurredImg == null) {
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	297 throw new ImageOpException("Unable to scale");
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	298 }
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	299 img = blurredImg;
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	300 }
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	301
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	302 public void scaleBinary(float scale) throws ImageOpException {
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	303 RenderedImage scaledImg;
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	304 // DEBUG
181 afe7ff98bb71 Servlet version 1.18b1 robcast parents: 159 diff changeset	305 logger.debug("scaleBinary: " + scale);
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	306 ParameterBlockJAI param = new ParameterBlockJAI("SubsampleBinaryToGray");
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	307 param.addSource(img);
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	308 param.setParameter("xScale", scale);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	309 param.setParameter("yScale", scale);
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	310 // hint with border extender
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	311 RenderingHints hint = new RenderingHints(JAI.KEY_BORDER_EXTENDER,
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	312 BorderExtender.createInstance(BorderExtender.BORDER_COPY));
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	313 // scale
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	314 scaledImg = JAI.create("SubsampleBinaryToGray", param, hint);
144 d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	315 if (scaledImg == null) {
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	316 throw new ImageOpException("Unable to scale");
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	317 }
d87a7e2515af Sevlet version 1.12b5 robcast parents: 142 diff changeset	318 img = scaledImg;
142 f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	319 }
f52a7664a807 Servlet version 1.12b3 robcast parents: 101 diff changeset	320
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	321 /* crops the current image */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	322 public void crop(int x_off, int y_off, int width, int height)
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	323 throws ImageOpException {
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	324 // setup Crop
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	325 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	326 param.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	327 param.add((float) x_off);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	328 param.add((float) y_off);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	329 param.add((float) width);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	330 param.add((float) height);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	331 RenderedImage croppedImg = JAI.create("crop", param);
1 0ff3ede32060 Initial revision robcast parents: diff changeset	332
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	333 logger.debug("CROP: " + x_off + "," + y_off + ", " + width + ","
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	334 + height + " ->" + croppedImg.getWidth() + "x"
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	335 + croppedImg.getHeight());
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	336 img = croppedImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	337 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	338
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	339 /* rotates the current image */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	340 public void rotate(double angle) throws ImageOpException {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	341 RenderedImage rotImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	342 // convert degrees to radians
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	343 double rangle = Math.toRadians(angle);
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	344 double x = img.getWidth() / 2;
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	345 double y = img.getHeight() / 2;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	346
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	347 // optimize rotation by right angles
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	348 TransposeType rotOp = null;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	349 if (Math.abs(angle - 0) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	350 // 0 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	351 return;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	352 } else if (Math.abs(angle - 90) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	353 // 90 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	354 rotOp = TransposeDescriptor.ROTATE_90;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	355 } else if (Math.abs(angle - 180) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	356 // 180 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	357 rotOp = TransposeDescriptor.ROTATE_180;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	358 } else if (Math.abs(angle - 270) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	359 // 270 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	360 rotOp = TransposeDescriptor.ROTATE_270;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	361 } else if (Math.abs(angle - 360) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	362 // 360 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	363 return;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	364 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	365 if (rotOp != null) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	366 // use Transpose operation
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	367 ParameterBlock pb = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	368 pb.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	369 pb.add(rotOp);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	370 rotImg = JAI.create("transpose", pb);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	371 } else {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	372 // setup "normal" rotation
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	373 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	374 param.addSource(img);
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	375 param.add((float) x);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	376 param.add((float) y);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	377 param.add((float) rangle);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	378 param.add(interpol);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	379
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	380 rotImg = JAI.create("rotate", param);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	381 }
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	382
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	383 logger.debug("ROTATE: " + x + "," + y + ", " + angle + " (" + rangle
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	384 + ")" + " ->" + rotImg.getWidth() + "x" + rotImg.getHeight());
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	385 img = rotImg;
73 3b8797fc3e90 New servlet version 1.5b. robcast parents: 1 diff changeset	386 }
1 0ff3ede32060 Initial revision robcast parents: diff changeset	387
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	388 /*
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	389 * mirrors the current image works only horizontal and vertical
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	390 */
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	391 public void mirror(double angle) throws ImageOpException {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	392 RenderedImage mirImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	393 // only mirroring by right angles
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	394 TransposeType rotOp = null;
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	395 if (Math.abs(angle) < epsilon) {
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	396 // 0 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	397 rotOp = TransposeDescriptor.FLIP_HORIZONTAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	398 } else if (Math.abs(angle - 90) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	399 // 90 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	400 rotOp = TransposeDescriptor.FLIP_VERTICAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	401 } else if (Math.abs(angle - 180) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	402 // 180 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	403 rotOp = TransposeDescriptor.FLIP_HORIZONTAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	404 } else if (Math.abs(angle - 270) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	405 // 270 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	406 rotOp = TransposeDescriptor.FLIP_VERTICAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	407 } else if (Math.abs(angle - 360) < epsilon) {
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	408 // 360 degree
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	409 rotOp = TransposeDescriptor.FLIP_HORIZONTAL;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	410 }
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	411 // use Transpose operation
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	412 ParameterBlock param = new ParameterBlock();
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	413 param.addSource(img);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	414 param.add(rotOp);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	415 mirImg = JAI.create("transpose", param);
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	416
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	417 if (mirImg == null) {
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	418 throw new ImageOpException("Unable to flip");
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	419 }
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	420 img = mirImg;
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	421 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	422
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	423 /* contrast and brightness enhancement */
86 997ba69afb81 New version 1.8b1. robcast parents: 85 diff changeset	424 public void enhance(float mult, float add) throws ImageOpException {
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	425 RenderedImage enhImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	426 double[] ma = { mult };
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	427 double[] aa = { add };
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	428 // use Rescale operation
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	429 ParameterBlock param = new ParameterBlock();
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	430 param.addSource(img);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	431 param.add(ma);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	432 param.add(aa);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	433 enhImg = JAI.create("rescale", param);
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	434
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	435 logger.debug("ENHANCE: *" + mult + ", +" + add + " ->"
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	436 + enhImg.getWidth() + "x" + enhImg.getHeight());
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	437 // DEBUG
79 63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	438 img = enhImg;
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	439 }
63c8186455c1 Servlet version 1.6b. Further cleanup and new functionality: robcast parents: 73 diff changeset	440
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	441 /*
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	442 * (non-Javadoc)
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	443 *
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	444 * @see digilib.image.DocuImage#enhanceRGB(float[], float[])
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	445 */
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	446 public void enhanceRGB(float[] rgbm, float[] rgba) throws ImageOpException {
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	447 RenderedImage enhImg;
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	448 int nb = rgbm.length;
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	449 double[] ma = new double[nb];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	450 double[] aa = new double[nb];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	451 for (int i = 0; i < nb; i++) {
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	452 ma[i] = rgbm[i];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	453 aa[i] = rgba[i];
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	454 }
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	455 // use Rescale operation
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	456 ParameterBlock param = new ParameterBlock();
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	457 param.addSource(img);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	458 param.add(ma);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	459 param.add(aa);
78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	460 enhImg = JAI.create("rescale", param);
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	461
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	462 logger.debug("ENHANCE_RGB: *" + rgbm + ", +" + rgba + " ->"
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	463 + enhImg.getWidth() + "x" + enhImg.getHeight());
101 78f52a1876fe digilib V1.9b1 robcast parents: 90 diff changeset	464 img = enhImg;
90 8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	465 }
8058d3b3466a New version 1.8b4. robcast parents: 86 diff changeset	466
466 64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	467 /*
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	468 * (non-Javadoc)
64cc0edac363 Servlet version 1.10b robcast parents: 462 diff changeset	469 *
208 460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	470 * @see digilib.image.DocuImage#dispose()
460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	471 */
460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	472 public void dispose() {
460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	473 img = null;
460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	474 }
460cd1f18b96 Servlet version 1.18b9 -- cleanup and bugfixes robcast parents: 185 diff changeset	475
1 0ff3ede32060 Initial revision robcast parents: diff changeset	476 }

Mercurial > hg > digilib-old

annotate servlet/src/digilib/image/JAIDocuImage.java @ 566:50f291d808b1 digilibPDF