org.apache.commons.imaging.formats.tiff.TiffTags Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.commons.imaging.formats.tiff;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.imaging.formats.tiff.constants.AdobePageMaker6TagConstants;
import org.apache.commons.imaging.formats.tiff.constants.AdobePhotoshopTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.AliasSketchbookProTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.DcfTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.DngTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.ExifTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.GdalLibraryTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.GeoTiffTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.GpsTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.HylaFaxTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.MicrosoftHdPhotoTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.MicrosoftTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.MolecularDynamicsGelTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.OceScanjobTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.Rfc2301TagConstants;
import org.apache.commons.imaging.formats.tiff.constants.Tiff4TagConstants;
import org.apache.commons.imaging.formats.tiff.constants.TiffDirectoryType;
import org.apache.commons.imaging.formats.tiff.constants.TiffEpTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
import org.apache.commons.imaging.formats.tiff.constants.WangTagConstants;
import org.apache.commons.imaging.formats.tiff.taginfos.TagInfo;
final class TiffTags {
private TiffTags() {
}
private static final List ALL_TAGS = makeMergedTagList();
private static final Map> ALL_TAG_MAP = makeTagMap(TiffTags.ALL_TAGS);
private static final Map TAG_COUNTS = countTags(TiffTags.ALL_TAGS);
private static List makeMergedTagList() {
final ArrayList result = new ArrayList<>();
result.addAll(AdobePageMaker6TagConstants.ALL_ADOBE_PAGEMAKER_6_TAGS);
result.addAll(AdobePhotoshopTagConstants.ALL_ADOBE_PHOTOSHOP_TAGS);
result.addAll(AliasSketchbookProTagConstants.ALL_ALIAS_SKETCHBOOK_PRO_TAGS);
result.addAll(DcfTagConstants.ALL_DCF_TAGS);
result.addAll(DngTagConstants.ALL_DNG_TAGS);
result.addAll(ExifTagConstants.ALL_EXIF_TAGS);
result.addAll(GeoTiffTagConstants.ALL_GEO_TIFF_TAGS);
result.addAll(GdalLibraryTagConstants.ALL_GDAL_LIBRARY_TAGS);
result.addAll(GpsTagConstants.ALL_GPS_TAGS);
result.addAll(HylaFaxTagConstants.ALL_HYLAFAX_TAGS);
result.addAll(MicrosoftTagConstants.ALL_MICROSOFT_TAGS);
result.addAll(MicrosoftHdPhotoTagConstants.ALL_MICROSOFT_HD_PHOTO_TAGS);
result.addAll(MolecularDynamicsGelTagConstants.ALL_MOLECULAR_DYNAMICS_GEL_TAGS);
result.addAll(OceScanjobTagConstants.ALL_OCE_SCANJOB_TAGS);
result.addAll(Rfc2301TagConstants.ALL_RFC_2301_TAGS);
result.addAll(Tiff4TagConstants.ALL_TIFF_4_TAGS);
result.addAll(TiffEpTagConstants.ALL_TIFF_EP_TAGS);
result.addAll(TiffTagConstants.ALL_TIFF_TAGS);
result.addAll(WangTagConstants.ALL_WANG_TAGS);
return Collections.unmodifiableList(result);
}
private static Map> makeTagMap(
final List tags) {
// make sure to use the thread-safe version; this is shared state.
final Map> map = new HashMap<>();
for (final TagInfo tag : tags) {
List tagList = map.computeIfAbsent(tag.tag, k -> new ArrayList<>());
tagList.add(tag);
}
return map;
}
private static Map countTags(final List tags) {
final Map map = new HashMap<>();
for (final TagInfo tag : tags) {
map.merge(tag.tag, 1, Integer::sum);
}
return map;
}
static Integer getTagCount(final int tag) {
return TAG_COUNTS.get(tag);
}
static TagInfo getTag(final int directoryType, final int tag) {
final List possibleMatches = ALL_TAG_MAP.get(tag);
if (null == possibleMatches) {
return TiffTagConstants.TIFF_TAG_UNKNOWN;
}
return getTag(directoryType, possibleMatches);
}
private static TagInfo getTag(final int directoryType, final List possibleMatches) {
// Please keep this method in sync with TiffImageMetadata's findField()
if (possibleMatches.isEmpty()) {
return null;
}
// first search for exact match.
for (final TagInfo tagInfo : possibleMatches) {
if (tagInfo.directoryType == TiffDirectoryType.EXIF_DIRECTORY_UNKNOWN) {
// pass
continue;
}
if (directoryType == tagInfo.directoryType.directoryType) {
return tagInfo;
}
}
// accept an inexact match.
for (final TagInfo tagInfo : possibleMatches) {
if (tagInfo.directoryType == TiffDirectoryType.EXIF_DIRECTORY_UNKNOWN) {
// pass
continue;
}
if (directoryType >= 0
&& tagInfo.directoryType.isImageDirectory()) {
return tagInfo;
}
if (directoryType < 0
&& !tagInfo.directoryType.isImageDirectory()) {
return tagInfo;
}
}
// accept a wildcard match.
for (final TagInfo tagInfo : possibleMatches) {
if (tagInfo.directoryType == TiffDirectoryType.EXIF_DIRECTORY_UNKNOWN) {
return tagInfo;
}
}
return TiffTagConstants.TIFF_TAG_UNKNOWN;
}
}