/*
* #%L
* BSD implementations of Bio-Formats readers and writers
* %%
* Copyright (C) 2015 Open Microscopy Environment:
* - Board of Regents of the University of Wisconsin-Madison
* - Glencoe Software, Inc.
* - University of Dundee
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package loci.formats.services;
import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import loci.common.services.AbstractService;
import loci.common.services.ServiceException;
import com.drew.imaging.ImageMetadataReader;
import com.drew.metadata.exif.ExifSubIFDDirectory;
import com.drew.metadata.Metadata;
import com.drew.metadata.Directory;
import com.drew.metadata.Tag;
import com.drew.imaging.ImageProcessingException;
/**
*
*/
public class EXIFServiceImpl extends AbstractService implements EXIFService {
private ExifSubIFDDirectory directory;
// -- Constructor --
public EXIFServiceImpl() {
// check for metadata-extractor.jar
checkClassDependency(ImageMetadataReader.class);
// check for xmpcore.jar
checkClassDependency(com.adobe.xmp.XMPMeta.class);
// check for xercesImpl.jar
checkClassDependency(org.apache.xerces.dom.NodeImpl.class);
}
// -- EXIFService API methods --
@Override
public void initialize(String file) throws ServiceException, IOException {
try {
File jpegFile = new File(file);
Metadata metadata = ImageMetadataReader.readMetadata(jpegFile);
directory = metadata.getDirectory(ExifSubIFDDirectory.class);
}
catch (Throwable e) {
throw new ServiceException("Could not read EXIF data", e);
}
}
@Override
public HashMap<String, String> getTags() {
HashMap<String, String> tagMap = new HashMap<String, String>();
if (directory != null) {
for (Tag tag : directory.getTags()) {
tagMap.put(tag.getTagName(), tag.getDescription());
}
}
return tagMap;
}
@Override
public Date getCreationDate() {
if (directory != null) {
return directory.getDate(ExifSubIFDDirectory.TAG_DATETIME_ORIGINAL);
}
return null;
}
@Override
public void close() throws IOException {
directory = null;
}
}