/*
* 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.
*/
package org.apache.tika.parser.audio;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map.Entry;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.UnsupportedAudioFileException;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.Parser;
import org.apache.tika.sax.XHTMLContentHandler;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
public class AudioParser implements Parser {
public void parse(InputStream stream, ContentHandler handler,
Metadata metadata) throws IOException, SAXException, TikaException {
parse(stream, metadata);
XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
xhtml.startDocument();
xhtml.endDocument();
}
public void parse(InputStream stream, Metadata metadata)
throws IOException, TikaException {
String type = metadata.get(Metadata.CONTENT_TYPE);
if (type != null) {
try {
AudioFileFormat fileFormat = AudioSystem
.getAudioFileFormat(stream);
AudioFormat format = fileFormat.getFormat();
metadata.set("samplerate", Integer.toString((int) format
.getSampleRate()));
metadata
.set("channels", Integer.toString(format.getChannels()));
metadata.set("bits", Integer.toString(format
.getSampleSizeInBits()));
metadata.set("encoding", format.getEncoding().toString());
// Javadoc suggests that some of the following properties might
// be available, but I had no success in finding any:
// "duration" Long playback duration of the file in microseconds
// "author" String name of the author of this file
// "title" String title of this file
// "copyright" String copyright message
// "date" Date date of the recording or release
// "comment" String an arbitrary text
for (Entry<String, Object> entry : format.properties()
.entrySet()) {
metadata.set(entry.getKey(), entry.getValue().toString());
}
} catch (UnsupportedAudioFileException e) {
// cannot parse, unknown format
}
}
}
}