Source Code Cross Referenced for ImageReadCIF.java in  » 6.0-JDK-Modules » Java-Advanced-Imaging » com » sun » media » jai » imageioimpl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » com.sun.media.jai.imageioimpl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $RCSfile: ImageReadCIF.java,v $
003:         *
004:         * 
005:         * Copyright (c) 2005 Sun Microsystems, Inc. All  Rights Reserved.
006:         * 
007:         * Redistribution and use in source and binary forms, with or without
008:         * modification, are permitted provided that the following conditions
009:         * are met: 
010:         * 
011:         * - Redistribution of source code must retain the above copyright 
012:         *   notice, this  list of conditions and the following disclaimer.
013:         * 
014:         * - Redistribution in binary form must reproduce the above copyright
015:         *   notice, this list of conditions and the following disclaimer in 
016:         *   the documentation and/or other materials provided with the
017:         *   distribution.
018:         * 
019:         * Neither the name of Sun Microsystems, Inc. or the names of 
020:         * contributors may be used to endorse or promote products derived 
021:         * from this software without specific prior written permission.
022:         * 
023:         * This software is provided "AS IS," without a warranty of any 
024:         * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
025:         * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
026:         * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027:         * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL 
028:         * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
029:         * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030:         * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR 
031:         * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032:         * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033:         * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034:         * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035:         * POSSIBILITY OF SUCH DAMAGES. 
036:         * 
037:         * You acknowledge that this software is not designed or intended for 
038:         * use in the design, construction, operation or maintenance of any 
039:         * nuclear facility. 
040:         *
041:         * $Revision: 1.1 $
042:         * $Date: 2005/02/11 05:01:54 $
043:         * $State: Exp $
044:         */
045:        package com.sun.media.jai.imageioimpl;
046:
047:        import java.awt.Dimension;
048:        import java.awt.RenderingHints;
049:        import java.awt.image.renderable.ParameterBlock;
050:        import java.util.ArrayList;
051:        import java.util.List;
052:        import javax.imageio.ImageReader;
053:        import javax.media.jai.CollectionImage;
054:        import javax.media.jai.CollectionImageFactory;
055:        import javax.media.jai.CollectionOp;
056:        import javax.media.jai.JAI;
057:        import javax.media.jai.PlanarImage;
058:        import com.sun.media.jai.operator.ImageReadDescriptor;
059:
060:        public class ImageReadCIF implements  CollectionImageFactory {
061:
062:            static CollectionImage createStatic(ParameterBlock args,
063:                    RenderingHints hints) {
064:
065:                // Clone the ParameterBlock as the ImageChoice will be overwritten.
066:                ParameterBlock renderedPB = (ParameterBlock) args.clone();
067:
068:                // Get the ImageChoice.
069:                int[] imageIndices = (int[]) args.getObjectParameter(1);
070:
071:                // Variables to be set in the subsequent "if" block.
072:                // XXX Could probably collapse the if block into a single code seq.
073:                int numSources;
074:                ImageIOCollectionImage imageList = null;
075:
076:                if (imageIndices == null) {
077:                    // null-valued ImageChoice: load all images.
078:
079:                    // Load the first image.
080:                    renderedPB.set(0, 1);
081:                    PlanarImage image = JAI.create("ImageRead", renderedPB,
082:                            hints);
083:
084:                    // Get the ImageReader property.
085:                    Object readerProperty = image
086:                            .getProperty(ImageReadDescriptor.PROPERTY_NAME_IMAGE_READER);
087:
088:                    // Try to read the number of images.
089:                    if (readerProperty instanceof  ImageReader) {
090:                        try {
091:                            // XXX Really should not allow search here. If search
092:                            // is disallowed and -1 is returned from getNumImages(),
093:                            // then "ImageRead" should just be called until an
094:                            // IndexOutOfBoundsException is caught.
095:                            numSources = ((ImageReader) readerProperty)
096:                                    .getNumImages(true);
097:                        } catch (Exception e) { // IOException
098:                            // Default to one source.
099:                            numSources = 1;
100:                        }
101:                    } else {
102:                        numSources = 1;
103:                    }
104:
105:                    // Allocate and fill index array.
106:                    imageIndices = new int[numSources];
107:                    for (int i = 0; i < numSources; i++) {
108:                        imageIndices[i] = i;
109:                    }
110:
111:                    // Allocate list and add first image.
112:                    imageList = new ImageIOCollectionImage(numSources);
113:                    imageList.add(image);
114:                } else {
115:                    // Set the number of sources and create the list.
116:                    numSources = imageIndices.length;
117:                    imageList = new ImageIOCollectionImage(numSources);
118:
119:                    // Load the first image requested.
120:                    renderedPB.set(imageIndices[0], 1);
121:                    PlanarImage image = JAI.create("ImageRead", renderedPB,
122:                            hints);
123:
124:                    // Add the first image to the list.
125:                    imageList.add(image);
126:                }
127:
128:                // Read subsequent images and add to the list.
129:                for (int idx = 1; idx < numSources; idx++) {
130:                    renderedPB.set(imageIndices[idx], 1);
131:                    PlanarImage image = JAI.create("ImageRead", renderedPB,
132:                            hints);
133:                    imageList.add(image);
134:                }
135:
136:                // Get the first image in the Collection.
137:                PlanarImage firstImage = (PlanarImage) imageList.get(0);
138:
139:                // Transfer properties to the Collection.
140:                ImageReadCRIF.copyProperty(firstImage, imageList,
141:                        ImageReadDescriptor.PROPERTY_NAME_IMAGE_READ_PARAM);
142:                ImageReadCRIF.copyProperty(firstImage, imageList,
143:                        ImageReadDescriptor.PROPERTY_NAME_IMAGE_READER);
144:                ImageReadCRIF.copyProperty(firstImage, imageList,
145:                        ImageReadDescriptor.PROPERTY_NAME_METADATA_STREAM);
146:
147:                return imageList;
148:            }
149:
150:            /** Constructor. */
151:            public ImageReadCIF() {
152:            }
153:
154:            public CollectionImage create(ParameterBlock args,
155:                    RenderingHints hints) {
156:                return createStatic(args, hints);
157:            }
158:
159:            // Forget it.
160:            public CollectionImage update(ParameterBlock oldParamBlock,
161:                    RenderingHints oldHints, ParameterBlock newParamBlock,
162:                    RenderingHints newHints, CollectionImage oldRendering,
163:                    CollectionOp op) {
164:                return null;
165:            }
166:        }
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