001/* ***** BEGIN LICENSE BLOCK *****
002 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
003 *
004 * The contents of this file are subject to the Mozilla Public License Version
005 * 1.1 (the "License"); you may not use this file except in compliance with
006 * the License. You may obtain a copy of the License at
007 * http://www.mozilla.org/MPL/
008 *
009 * Software distributed under the License is distributed on an "AS IS" basis,
010 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
011 * for the specific language governing rights and limitations under the
012 * License.
013 *
014 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
015 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
016 *
017 * The Initial Developer of the Original Code is
018 * Agfa Healthcare.
019 * Portions created by the Initial Developer are Copyright (C) 2011
020 * the Initial Developer. All Rights Reserved.
021 *
022 * Contributor(s):
023 * See @authors listed below
024 *
025 * Alternatively, the contents of this file may be used under the terms of
026 * either the GNU General Public License Version 2 or later (the "GPL"), or
027 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
028 * in which case the provisions of the GPL or the LGPL are applicable instead
029 * of those above. If you wish to allow use of your version of this file only
030 * under the terms of either the GPL or the LGPL, and not to allow others to
031 * use your version of this file under the terms of the MPL, indicate your
032 * decision by deleting the provisions above and replace them with the notice
033 * and other provisions required by the GPL or the LGPL. If you do not delete
034 * the provisions above, a recipient may use your version of this file under
035 * the terms of any one of the MPL, the GPL or the LGPL.
036 *
037 * ***** END LICENSE BLOCK ***** */
038
039package org.dcm4che3.imageio.codec;
040
041import org.dcm4che3.conf.core.api.ConfigurableClass;
042import org.dcm4che3.conf.core.api.ConfigurableProperty;
043import org.dcm4che3.conf.core.api.LDAP;
044import org.dcm4che3.data.Attributes;
045import org.dcm4che3.data.Tag;
046import org.dcm4che3.image.PhotometricInterpretation;
047
048import java.io.Serializable;
049import java.util.ArrayList;
050import java.util.Collections;
051import java.util.Iterator;
052import java.util.List;
053
054
055/**
056 * @author Gunter Zeilinger <gunterze@gmail.com>
057 * @author Roman K
058 */
059@ConfigurableClass
060public class CompressionRules
061        implements Iterable<CompressionRule>, Serializable {
062    
063    private static final long serialVersionUID = 5027417735779753342L;
064
065    /**
066     * This list has a consistent order wrt config save/load
067     */
068    @LDAP(noContainerNode = true)
069    @ConfigurableProperty
070    private List<CompressionRule> list = new ArrayList<CompressionRule>();
071
072    /**
073     * this list is sorted wrt weighting logic (elements with the same weight might not follow a deterministic order)
074     */
075    private List<CompressionRule> weightedList = new ArrayList<CompressionRule>();
076
077    public void add(CompressionRule rule) {
078        if (findByCommonName(rule.getCommonName()) != null)
079            throw new IllegalStateException("CompressionRule with cn: '"
080                    + rule.getCommonName() + "' already exists");
081        int index = Collections.binarySearch(weightedList, rule);
082        if (index < 0)
083            index = -(index+1);
084        weightedList.add(index, rule);
085        list.add(rule);
086    }
087
088    public void add(CompressionRules rules) {
089         for (CompressionRule rule : rules) add(rule);
090    }
091
092    /**
093     * Removes a compression rule with the same Common Name
094     * @param ac
095     * @return
096     */
097    public boolean remove(CompressionRule ac) {
098
099        if (ac == null || ac.getCommonName() == null)
100            return false;
101
102        boolean res = false;
103        Iterator<CompressionRule> iterator = weightedList.iterator();
104        while (iterator.hasNext()) {
105            CompressionRule compressionRule = iterator.next();
106            if (ac.getCommonName().equals(compressionRule.getCommonName())) {
107                res = true;
108                // will remove below
109                break;
110            }
111        }
112
113        Iterator<CompressionRule> listIterator = list.iterator();
114        while (listIterator.hasNext()) {
115            CompressionRule next = listIterator.next();
116            if (ac.getCommonName().equals(next.getCommonName())) {
117                if (!res) throw new IllegalStateException("Compression rule lists are not consistent, will not remove rule "+next.getCommonName());
118                listIterator.remove();
119                iterator.remove();
120                break;
121            }
122        }
123        return res;
124    }
125
126    public void clear() {
127        weightedList.clear();
128        list.clear();
129    }
130
131    public CompressionRule findByCommonName(String commonName) {
132        for (CompressionRule rule : weightedList)
133            if (commonName.equals(rule.getCommonName()))
134                return rule;
135        return null;
136    }
137
138    public CompressionRule findCompressionRule(String aeTitle, Attributes attrs) {
139        try {
140            return findCompressionRule(aeTitle,
141                    PhotometricInterpretation.fromString(
142                            attrs.getString(Tag.PhotometricInterpretation)),
143                    attrs.getInt(Tag.BitsStored, 0),
144                    attrs.getInt(Tag.PixelRepresentation, 0),
145                    attrs.getString(Tag.SOPClassUID),
146                    attrs.getStrings(Tag.ImageType),
147                    attrs.getString(Tag.BodyPartExamined));
148        } catch (IllegalArgumentException ignore) {
149            return null;
150        }
151    }
152
153    public CompressionRule findCompressionRule(String aeTitle,
154                                               PhotometricInterpretation pmi,
155                                               int bitsStored, int pixelRepresentation,
156                                               String sopClass, String[] imgTypes, String bodyPart) {
157        for (CompressionRule ac : weightedList)
158            if (ac.matchesCondition(pmi, bitsStored, pixelRepresentation,
159                    aeTitle, sopClass, imgTypes, bodyPart))
160                return ac;
161        return null;
162    }
163
164    @Override
165    public Iterator<CompressionRule> iterator() {
166        return weightedList.iterator();
167    }
168
169    public List<CompressionRule> getList() {
170        return list;
171    }
172
173    public void setList(List<CompressionRule> list) {
174        this.list.clear();
175        this.weightedList.clear();
176        for (CompressionRule rule : list) add(rule);
177    }
178}