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/*
* Copyright 2002-2017 Drew Noakes
*
* Licensed 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.
*
* More information about this project is available at:
*
* https://drewnoakes.com/code/exif/
* https://github.com/drewnoakes/metadata-extractor
*/
package com.drew.metadata;
import com.adobe.xmp.XMPException;
import com.adobe.xmp.XMPIterator;
import com.adobe.xmp.XMPMeta;
import com.adobe.xmp.properties.XMPPropertyInfo;
import com.drew.imaging.ImageMetadataReader;
import com.drew.imaging.ImageProcessingException;
import com.drew.metadata.xmp.XmpDirectory;
import java.io.IOException;
import java.io.InputStream;
/**
* Shows basic extraction and iteration of XMP data.
* <p>
* For more information, see the project wiki: https://github.com/drewnoakes/metadata-extractor/wiki/GettingStarted
*
* @author Drew Noakes https://drewnoakes.com
*/
public class XmpSample
{
private static void xmpSample(InputStream imageStream) throws XMPException, ImageProcessingException, IOException
{
// Extract metadata from the image
Metadata metadata = ImageMetadataReader.readMetadata(imageStream);
// Iterate through any XMP directories we may have received
for (XmpDirectory xmpDirectory : metadata.getDirectoriesOfType(XmpDirectory.class)) {
// Usually with metadata-extractor, you iterate a directory's tags. However XMP has
// a complex structure with many potentially unknown properties. This doesn't map
// well to metadata-extractor's directory-and-tag model.
//
// If you need to use XMP data, access the XMPMeta object directly.
XMPMeta xmpMeta = xmpDirectory.getXMPMeta();
XMPIterator itr = xmpMeta.iterator();
// Iterate XMP properties
while (itr.hasNext()) {
XMPPropertyInfo property = (XMPPropertyInfo) itr.next();
// Print details of the property
System.out.println(property.getPath() + ": " + property.getValue());
}
}
}
}
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