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) 2013
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.io;
040
041import java.util.List;
042
043import org.dcm4che3.data.Tag;
044import org.dcm4che3.data.Attributes;
045import org.dcm4che3.data.ItemPointer;
046import org.dcm4che3.data.VR;
047import org.dcm4che3.util.TagUtils;
048
049/**
050 * @author Gunter Zeilinger <gunterze@gmail.com>
051 *
052 */
053public abstract class BulkDataDescriptor {
054
055    public final static BulkDataDescriptor DEFAULT = new BulkDataDescriptor() {
056
057        @Override
058        public boolean isBulkData(String privateCreator, int tag, VR vr, int length,
059                                      ItemPointer... itemPointer) {
060            switch (TagUtils.normalizeRepeatingGroup(tag)) {
061            case Tag.PixelDataProviderURL:
062            case Tag.AudioSampleData:
063            case Tag.CurveData:
064            case Tag.SpectroscopyData:
065            case Tag.OverlayData:
066            case Tag.EncapsulatedDocument:
067            case Tag.FloatPixelData:
068            case Tag.DoubleFloatPixelData:
069            case Tag.PixelData:
070                return itemPointer.length == 0;
071            case Tag.WaveformData:
072                return itemPointer.length == 1
073                    && itemPointer[0].sequenceTag == Tag.WaveformSequence;
074            }
075            return false;
076        }
077    };
078
079    public final static BulkDataDescriptor PIXELDATA = new BulkDataDescriptor() {
080
081        @Override
082        public boolean isBulkData(String privateCreator, int tag, VR vr, int length,
083                                      ItemPointer... itemPointer) {
084            return tag == Tag.PixelData;
085        }
086    };
087
088    public static BulkDataDescriptor valueOf(final Attributes blkAttrs) {
089        return new BulkDataDescriptor() {
090
091            @Override
092            public boolean isBulkData(String privateCreator, int tag, VR vr, int length,
093                                      ItemPointer... itemPointer) {
094                Attributes item = blkAttrs;
095                for (ItemPointer ip : itemPointer) {
096                    item = item.getNestedDataset(
097                            ip.privateCreator, ip.sequenceTag, ip.itemIndex);
098                }
099                return item != null && item.contains(privateCreator, tag);
100            }
101        };
102    }
103
104    public abstract boolean isBulkData(String privateCreator, int tag, VR vr, int length,
105                                       ItemPointer... itemPointer);
106
107}