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Update the MP3 extractor to output audio keys (related to ALF-6170), and refactor the audio extractors to share more common code. Also expands the audio extractor tests to share common code, and test more metadata. (Needed for devcon demo)

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31013 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Nick Burch
2011-10-06 16:17:06 +00:00
parent e180abafe4
commit 9f60d2b246
11 changed files with 438 additions and 88 deletions
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70
source/java/org/alfresco/repo/content/metadata/MP3MetadataExtracter.java
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@@ -31,38 +31,35 @@ import org.apache.tika.parser.mp3.Mp3Parser;
/**
* Extracts the following values from MP3 files:
* <pre>
* <b>songTitle:</b> -- {music}songTitle, cm:title
* <b>albumTitle:</b> -- {music}albumTitle
* <b>artist:</b> -- {music}artist, cm:author
* <b>songTitle:</b> -- cm:title
* <b>albumTitle:</b> -- audio:album
* <b>artist:</b> -- audio:artist, cm:author
* <b>description:</b> -- cm:description
* <b>comment:</b> -- {music}comment
* <b>yearReleased:</b> -- {music}yearReleased
* <b>trackNumber:</b> -- {music}trackNumber
* <b>genre:</b> -- {music}genre
* <b>composer:</b> -- {music}composer
* <b>lyrics:</b> -- {music}lyrics
* <b>comment:</b> --
* <b>yearReleased:</b> -- audio:releaseDate
* <b>trackNumber:</b> -- audio:trackNumber
* <b>genre:</b> -- audio:genre
* <b>composer:</b> -- audio:composer
* <b>lyrics:</b> --
* </pre>
*
* TODO Get hold of a mp3 file with some lyrics in it, so we
* can contribute the patch to Tika
* Note - XMPDM metadata keys are also emitted, in common with
* the other Tika powered extracters
*
* Uses Apache Tika
*
* @author Nick Burch
* @author Roy Wetherall
*/
public class MP3MetadataExtracter extends TikaPoweredMetadataExtracter
public class MP3MetadataExtracter extends TikaAudioMetadataExtracter
{
private static final String KEY_SONG_TITLE = "songTitle";
private static final String KEY_ALBUM_TITLE = "albumTitle";
private static final String KEY_ARTIST = "artist";
private static final String KEY_DESCRIPTION = "description";
private static final String KEY_COMMENT = "comment";
private static final String KEY_YEAR_RELEASED = "yearReleased";
private static final String KEY_TRACK_NUMBER = "trackNumber";
private static final String KEY_GENRE = "genre";
private static final String KEY_COMPOSER = "composer";
private static final String KEY_LYRICS = "lyrics";
public static ArrayList<String> SUPPORTED_MIMETYPES = buildSupportedMimetypes(
new String[] { MimetypeMap.MIMETYPE_MP3 },
@@ -82,6 +79,12 @@ public class MP3MetadataExtracter extends TikaPoweredMetadataExtracter
@Override
protected Map<String, Serializable> extractSpecific(Metadata metadata,
Map<String, Serializable> properties, Map<String,String> headers) {
// Do the normal Audio mappings
super.extractSpecific(metadata, properties, headers);
// Now do the compatibility ones
// We only need these for people who had pre-existing mapping
// properties from before the proper audio model was added
putRawValue(KEY_ALBUM_TITLE, metadata.get(XMPDM.ALBUM), properties);
putRawValue(KEY_SONG_TITLE, metadata.get(Metadata.TITLE), properties);
putRawValue(KEY_ARTIST, metadata.get(XMPDM.ARTIST), properties);
@@ -90,41 +93,8 @@ public class MP3MetadataExtracter extends TikaPoweredMetadataExtracter
putRawValue(KEY_GENRE, metadata.get(XMPDM.GENRE), properties);
putRawValue(KEY_YEAR_RELEASED, metadata.get(XMPDM.RELEASE_DATE), properties);
putRawValue(KEY_COMPOSER, metadata.get(XMPDM.COMPOSER), properties);
// TODO lyrics
//putRawValue(KEY_LYRICS, getLyrics(), properties);
putRawValue(KEY_DESCRIPTION, generateDescription(metadata), properties);
// All done
return properties;
}
/**
* Generate the description
*
* @param props the properties extracted from the file
* @return the description
*/
private String generateDescription(Metadata metadata)
{
StringBuilder result = new StringBuilder();
if (metadata.get(Metadata.TITLE) != null)
{
result.append(metadata.get(Metadata.TITLE));
if (metadata.get(XMPDM.ALBUM) != null)
{
result
.append(" - ")
.append(metadata.get(XMPDM.ALBUM));
}
if (metadata.get(XMPDM.ARTIST) != null)
{
result
.append(" (")
.append(metadata.get(XMPDM.ARTIST))
.append(")");
}
}
return result.toString();
}
}