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/*
* 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.mp3;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import org.apache.tika.exception.TikaException;
import org.apache.tika.io.TailStream;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.metadata.TikaCoreProperties;
import org.apache.tika.metadata.XMPDM;
import org.apache.tika.mime.MediaType;
import org.apache.tika.parser.AbstractParser;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.mp3.ID3Tags.ID3Comment;
import org.apache.tika.sax.XHTMLContentHandler;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* The Mp3Parser is used to parse ID3 Version 1 Tag information
* from an MP3 file, if available.
*
* @see MP3 ID3 Version 1 specification
* @see MP3 ID3 Version 2.4 Structure Specification
* @see MP3 ID3 Version 2.4 Frames Specification
*/
public class Mp3Parser extends AbstractParser {
/** Serial version UID */
private static final long serialVersionUID = 8537074922934844370L;
private static final Set SUPPORTED_TYPES =
Collections.singleton(MediaType.audio("mpeg"));
public Set getSupportedTypes(ParseContext context) {
return SUPPORTED_TYPES;
}
public void parse(
InputStream stream, ContentHandler handler,
Metadata metadata, ParseContext context)
throws IOException, SAXException, TikaException {
metadata.set(Metadata.CONTENT_TYPE, "audio/mpeg");
metadata.set(XMPDM.AUDIO_COMPRESSOR, "MP3");
XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
xhtml.startDocument();
// Create handlers for the various kinds of ID3 tags
ID3TagsAndAudio audioAndTags = getAllTagHandlers(stream, handler);
if (audioAndTags.tags.length > 0) {
CompositeTagHandler tag = new CompositeTagHandler(audioAndTags.tags);
metadata.set(TikaCoreProperties.TITLE, tag.getTitle());
metadata.set(TikaCoreProperties.CREATOR, tag.getArtist());
metadata.set(XMPDM.ARTIST, tag.getArtist());
metadata.set(XMPDM.ALBUM_ARTIST, tag.getAlbumArtist());
metadata.set(XMPDM.COMPOSER, tag.getComposer());
metadata.set(XMPDM.ALBUM, tag.getAlbum());
metadata.set(XMPDM.COMPILATION, tag.getCompilation());
metadata.set(XMPDM.RELEASE_DATE, tag.getYear());
metadata.set(XMPDM.GENRE, tag.getGenre());
metadata.set(XMPDM.DURATION, audioAndTags.duration);
List comments = new ArrayList();
for (ID3Comment comment : tag.getComments()) {
StringBuffer cmt = new StringBuffer();
if (comment.getLanguage() != null) {
cmt.append(comment.getLanguage());
cmt.append(" - ");
}
if (comment.getDescription() != null) {
cmt.append(comment.getDescription());
if (comment.getText() != null) {
cmt.append("\n");
}
}
if (comment.getText() != null) {
cmt.append(comment.getText());
}
comments.add(cmt.toString());
metadata.add(XMPDM.LOG_COMMENT.getName(), cmt.toString());
}
xhtml.element("h1", tag.getTitle());
xhtml.element("p", tag.getArtist());
// ID3v1.1 Track addition
StringBuilder sb = new StringBuilder();
sb.append(tag.getAlbum());
if (tag.getTrackNumber() != null) {
sb.append(", track ").append(tag.getTrackNumber());
metadata.set(XMPDM.TRACK_NUMBER, tag.getTrackNumber());
}
if (tag.getDisc() != null) {
sb.append(", disc ").append(tag.getDisc());
metadata.set(XMPDM.DISC_NUMBER, tag.getDisc());
}
xhtml.element("p", sb.toString());
xhtml.element("p", tag.getYear());
xhtml.element("p", tag.getGenre());
xhtml.element("p", String.valueOf(audioAndTags.duration));
for (String comment : comments) {
xhtml.element("p", comment);
}
}
if (audioAndTags.audio != null) {
metadata.set("samplerate", String.valueOf(audioAndTags.audio.getSampleRate()));
metadata.set("channels", String.valueOf(audioAndTags.audio.getChannels()));
metadata.set("version", audioAndTags.audio.getVersion());
metadata.set(
XMPDM.AUDIO_SAMPLE_RATE,
Integer.toString(audioAndTags.audio.getSampleRate()));
if(audioAndTags.audio.getChannels() == 1) {
metadata.set(XMPDM.AUDIO_CHANNEL_TYPE, "Mono");
} else if(audioAndTags.audio.getChannels() == 2) {
metadata.set(XMPDM.AUDIO_CHANNEL_TYPE, "Stereo");
} else if(audioAndTags.audio.getChannels() == 5) {
metadata.set(XMPDM.AUDIO_CHANNEL_TYPE, "5.1");
} else if(audioAndTags.audio.getChannels() == 7) {
metadata.set(XMPDM.AUDIO_CHANNEL_TYPE, "7.1");
}
}
if (audioAndTags.lyrics != null && audioAndTags.lyrics.hasLyrics()) {
xhtml.startElement("p", "class", "lyrics");
xhtml.characters(audioAndTags.lyrics.lyricsText);
xhtml.endElement("p");
}
xhtml.endDocument();
}
/**
* Scans the MP3 frames for ID3 tags, and creates ID3Tag Handlers
* for each supported set of tags.
*/
protected static ID3TagsAndAudio getAllTagHandlers(InputStream stream, ContentHandler handler)
throws IOException, SAXException, TikaException {
ID3v24Handler v24 = null;
ID3v23Handler v23 = null;
ID3v22Handler v22 = null;
ID3v1Handler v1 = null;
LyricsHandler lyrics = null;
AudioFrame firstAudio = null;
TailStream tailStream = new TailStream(stream, 10240+128);
MpegStream mpegStream = new MpegStream(tailStream);
// ID3v2 tags live at the start of the file
// You can apparently have several different ID3 tag blocks
// So, keep going until we don't find any more
MP3Frame f;
while ((f = ID3v2Frame.createFrameIfPresent(mpegStream)) != null) {
if(f instanceof ID3v2Frame) {
ID3v2Frame id3F = (ID3v2Frame)f;
if (id3F.getMajorVersion() == 4) {
v24 = new ID3v24Handler(id3F);
} else if(id3F.getMajorVersion() == 3) {
v23 = new ID3v23Handler(id3F);
} else if(id3F.getMajorVersion() == 2) {
v22 = new ID3v22Handler(id3F);
}
}
}
// Now iterate over all audio frames in the file
AudioFrame frame = mpegStream.nextFrame();
float duration = 0;
while (frame != null)
{
duration += frame.getDuration();
if (firstAudio == null)
{
firstAudio = frame;
}
mpegStream.skipFrame();
frame = mpegStream.nextFrame();
}
// ID3v1 tags live at the end of the file
// Lyrics live just before ID3v1, at the end of the file
// Search for both (handlers seek to the end for us)
lyrics = new LyricsHandler(tailStream.getTail());
v1 = lyrics.id3v1;
// Go in order of preference
// Currently, that's newest to oldest
List tags = new ArrayList();
if(v24 != null && v24.getTagsPresent()) {
tags.add(v24);
}
if(v23 != null && v23.getTagsPresent()) {
tags.add(v23);
}
if(v22 != null && v22.getTagsPresent()) {
tags.add(v22);
}
if(v1 != null && v1.getTagsPresent()) {
tags.add(v1);
}
ID3TagsAndAudio ret = new ID3TagsAndAudio();
ret.audio = firstAudio;
ret.lyrics = lyrics;
ret.tags = tags.toArray(new ID3Tags[tags.size()]);
ret.duration = duration;
return ret;
}
protected static class ID3TagsAndAudio {
private ID3Tags[] tags;
private AudioFrame audio;
private LyricsHandler lyrics;
private float duration;
}
}
