| /* |
| * 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.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| 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 javax.sound.sampled.AudioFileFormat.Type; |
| |
| import org.apache.tika.exception.TikaException; |
| import org.apache.tika.metadata.Metadata; |
| import org.apache.tika.metadata.XMPDM; |
| import org.apache.tika.mime.MediaType; |
| import org.apache.tika.parser.ParseContext; |
| 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 { |
| |
| private static final Set<MediaType> SUPPORTED_TYPES = |
| Collections.unmodifiableSet(new HashSet<MediaType>(Arrays.asList( |
| MediaType.audio("basic"), |
| MediaType.audio("x-wav"), |
| MediaType.audio("x-aiff")))); |
| |
| public Set<MediaType> getSupportedTypes(ParseContext context) { |
| return SUPPORTED_TYPES; |
| } |
| |
| public void parse( |
| InputStream stream, ContentHandler handler, |
| Metadata metadata, ParseContext context) |
| throws IOException, SAXException, TikaException { |
| // AudioSystem expects the stream to support the mark feature |
| if (!stream.markSupported()) { |
| stream = new BufferedInputStream(stream); |
| } |
| try { |
| AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(stream); |
| Type type = fileFormat.getType(); |
| if (type == Type.AIFC || type == Type.AIFF) { |
| metadata.set(Metadata.CONTENT_TYPE, "audio/x-aiff"); |
| } else if (type == Type.AU || type == Type.SND) { |
| metadata.set(Metadata.CONTENT_TYPE, "audio/basic"); |
| } else if (type == Type.WAVE) { |
| metadata.set(Metadata.CONTENT_TYPE, "audio/x-wav"); |
| } |
| |
| AudioFormat audioFormat = fileFormat.getFormat(); |
| int channels = audioFormat.getChannels(); |
| if (channels != AudioSystem.NOT_SPECIFIED) { |
| metadata.set("channels", String.valueOf(channels)); |
| // TODO: Use XMPDM.TRACKS? (see also frame rate in AudioFormat) |
| } |
| float rate = audioFormat.getSampleRate(); |
| if (rate != AudioSystem.NOT_SPECIFIED) { |
| metadata.set("samplerate", String.valueOf(rate)); |
| metadata.set( |
| XMPDM.AUDIO_SAMPLE_RATE, |
| Integer.toString((int) rate)); |
| } |
| int bits = audioFormat.getSampleSizeInBits(); |
| if (bits != AudioSystem.NOT_SPECIFIED) { |
| metadata.set("bits", String.valueOf(bits)); |
| if (bits == 8) { |
| metadata.set(XMPDM.AUDIO_SAMPLE_TYPE, "8Int"); |
| } else if (bits == 16) { |
| metadata.set(XMPDM.AUDIO_SAMPLE_TYPE, "16Int"); |
| } else if (bits == 32) { |
| metadata.set(XMPDM.AUDIO_SAMPLE_TYPE, "32Int"); |
| } |
| } |
| metadata.set("encoding", audioFormat.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 |
| |
| addMetadata(metadata, fileFormat.properties()); |
| addMetadata(metadata, audioFormat.properties()); |
| } catch (UnsupportedAudioFileException e) { |
| // There is no way to know whether this exception was |
| // caused by the document being corrupted or by the format |
| // just being unsupported. So we do nothing. |
| } |
| |
| XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata); |
| xhtml.startDocument(); |
| xhtml.endDocument(); |
| } |
| |
| private void addMetadata(Metadata metadata, Map<String, Object> properties) { |
| if (properties != null) { |
| for (Entry<String, Object> entry : properties.entrySet()) { |
| Object value = entry.getValue(); |
| if (value != null) { |
| metadata.set(entry.getKey(), value.toString()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * @deprecated This method will be removed in Apache Tika 1.0. |
| */ |
| public void parse( |
| InputStream stream, ContentHandler handler, Metadata metadata) |
| throws IOException, SAXException, TikaException { |
| parse(stream, handler, metadata, new ParseContext()); |
| } |
| |
| } |