/*
* ModeShape (http://www.modeshape.org)
*
* 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.
*/
package org.modeshape.sequencer.mp3;
import static org.modeshape.sequencer.mp3.Mp3MetadataLexicon.ALBUM;
import static org.modeshape.sequencer.mp3.Mp3MetadataLexicon.AUTHOR;
import static org.modeshape.sequencer.mp3.Mp3MetadataLexicon.COMMENT;
import static org.modeshape.sequencer.mp3.Mp3MetadataLexicon.METADATA_NODE;
import static org.modeshape.sequencer.mp3.Mp3MetadataLexicon.TITLE;
import static org.modeshape.sequencer.mp3.Mp3MetadataLexicon.YEAR;
import java.io.IOException;
import java.io.InputStream;
import javax.jcr.Binary;
import javax.jcr.NamespaceRegistry;
import javax.jcr.Node;
import javax.jcr.Property;
import javax.jcr.RepositoryException;
import org.modeshape.common.util.CheckArg;
import org.modeshape.jcr.api.nodetype.NodeTypeManager;
import org.modeshape.jcr.api.sequencer.Sequencer;
/**
* A sequencer that processes the binary content of an MP3 audio file, extracts the metadata for the file, and then writes that
* audio metadata to the repository.
* <p>
* This sequencer produces data that corresponds to the following structure:
* <ul>
* <li><strong>mp3:metadata</strong> node of type <code>mp3:metadata</code>
* <ul>
* <li><strong>mp3:title</strong> - optional string property for the name of the audio file or recording</li>
* <li><strong>mp3:author</strong> - optional string property for the author of the recording</li>
* <li><strong>mp3:album</strong> - optional string property for the name of the album</li>
* <li><strong>mp3:year</strong> - optional integer property for the year the recording as created</li>
* <li><strong>mp3:comment</strong> - optional string property specifying a comment</li>
* </ul>
* </li>
* </ul>
* </p>
*
* @deprecated starting with 5.1 this should be replaced with the Audio sequencer; this will be removed in the next major version
*/
@Deprecated
public class Mp3MetadataSequencer extends Sequencer {
public static final class MimeTypeConstants {
public static final String MP3 = "audio/mpeg";
}
@Override
public void initialize( NamespaceRegistry registry,
NodeTypeManager nodeTypeManager ) throws RepositoryException, IOException {
super.registerNodeTypes("mp3.cnd", nodeTypeManager, true);
registerDefaultMimeTypes(MimeTypeConstants.MP3);
}
@Override
public boolean execute( Property inputProperty,
Node outputNode,
Context context ) throws Exception {
Binary binaryValue = inputProperty.getBinary();
CheckArg.isNotNull(binaryValue, "binary");
Mp3Metadata metadata = null;
try (InputStream stream = binaryValue.getStream()) {
metadata = Mp3Metadata.instance(stream);
}
Node sequencedNode = outputNode;
if (outputNode.isNew()) {
outputNode.setPrimaryType(METADATA_NODE);
} else {
sequencedNode = outputNode.addNode(METADATA_NODE, METADATA_NODE);
}
sequencedNode.setProperty(TITLE, metadata.getTitle());
sequencedNode.setProperty(AUTHOR, metadata.getAuthor());
sequencedNode.setProperty(ALBUM, metadata.getAlbum());
sequencedNode.setProperty(YEAR, metadata.getYear());
sequencedNode.setProperty(COMMENT, metadata.getComment());
return true;
}
}