IsoFile isoFile;
// The MP4Parser library accepts either a File, or a byte array
// As MP4 video files are typically large, always use a file to
// avoid OOMs that may occur with in-memory buffering
TemporaryResources tmp = new TemporaryResources();
TikaInputStream tstream = TikaInputStream.get(stream, tmp);
try {
isoFile = new IsoFile(new DirectFileReadDataSource(tstream.getFile()));
tmp.addResource(isoFile);
// Grab the file type box
FileTypeBox fileType = getOrNull(isoFile, FileTypeBox.class);
if (fileType != null) {
// Identify the type
MediaType type = MediaType.application("mp4");
for (MediaType t : typesMap.keySet()) {
if (typesMap.get(t).contains(fileType.getMajorBrand())) {
type = t;
break;
}
}
metadata.set(Metadata.CONTENT_TYPE, type.toString());
if (type.getType().equals("audio")) {
metadata.set(XMPDM.AUDIO_COMPRESSOR, fileType.getMajorBrand().trim());
}
} else {
// Some older QuickTime files lack the FileType
metadata.set(Metadata.CONTENT_TYPE, "video/quicktime");
}
// Get the main MOOV box
MovieBox moov = getOrNull(isoFile, MovieBox.class);
if (moov == null) {
// Bail out
return;
}
XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
xhtml.startDocument();
// Pull out some information from the header box
MovieHeaderBox mHeader = getOrNull(moov, MovieHeaderBox.class);
if (mHeader != null) {
// Get the creation and modification dates
metadata.set(Metadata.CREATION_DATE, mHeader.getCreationTime());
metadata.set(TikaCoreProperties.MODIFIED, mHeader.getModificationTime());
// Get the duration
double durationSeconds = ((double)mHeader.getDuration()) / mHeader.getTimescale();
// TODO Use this
// The timescale is normally the sampling rate
metadata.set(XMPDM.AUDIO_SAMPLE_RATE, (int)mHeader.getTimescale());
}
// Get some more information from the track header
// TODO Decide how to handle multiple tracks
List<TrackBox> tb = moov.getBoxes(TrackBox.class);
if (tb.size() > 0) {
TrackBox track = tb.get(0);
TrackHeaderBox header = track.getTrackHeaderBox();
// Get the creation and modification dates
metadata.set(TikaCoreProperties.CREATED, header.getCreationTime());
metadata.set(TikaCoreProperties.MODIFIED, header.getModificationTime());
// Get the video with and height
metadata.set(Metadata.IMAGE_WIDTH, (int)header.getWidth());
metadata.set(Metadata.IMAGE_LENGTH, (int)header.getHeight());
// Get the sample information
SampleTableBox samples = track.getSampleTableBox();
SampleDescriptionBox sampleDesc = samples.getSampleDescriptionBox();
if (sampleDesc != null) {
// Look for the first Audio Sample, if present
AudioSampleEntry sample = getOrNull(sampleDesc, AudioSampleEntry.class);
if (sample != null) {
XMPDM.ChannelTypePropertyConverter.convertAndSet(metadata, sample.getChannelCount());
//metadata.set(XMPDM.AUDIO_SAMPLE_TYPE, sample.getSampleSize()); // TODO Num -> Type mapping
metadata.set(XMPDM.AUDIO_SAMPLE_RATE, (int)sample.getSampleRate());
//metadata.set(XMPDM.AUDIO_, sample.getSamplesPerPacket());
//metadata.set(XMPDM.AUDIO_, sample.getBytesPerSample());
}
}
}
// Get metadata from the User Data Box
UserDataBox userData = getOrNull(moov, UserDataBox.class);
if (userData != null) {
MetaBox meta = getOrNull(userData, MetaBox.class);
// Check for iTunes Metadata
// See http://atomicparsley.sourceforge.net/mpeg-4files.html and
// http://code.google.com/p/mp4v2/wiki/iTunesMetadata for more on these
AppleItemListBox apple = getOrNull(meta, AppleItemListBox.class);
if (apple != null) {
// Title
AppleNameBox title = getOrNull(apple, AppleNameBox.class);
addMetadata(TikaCoreProperties.TITLE, metadata, title);
// Artist
AppleArtistBox artist = getOrNull(apple, AppleArtistBox.class);
addMetadata(TikaCoreProperties.CREATOR, metadata, artist);
addMetadata(XMPDM.ARTIST, metadata, artist);
// Album Artist
AppleArtist2Box artist2 = getOrNull(apple, AppleArtist2Box.class);
addMetadata(XMPDM.ALBUM_ARTIST, metadata, artist2);
// Album
AppleAlbumBox album = getOrNull(apple, AppleAlbumBox.class);
addMetadata(XMPDM.ALBUM, metadata, album);
// Composer
AppleTrackAuthorBox composer = getOrNull(apple, AppleTrackAuthorBox.class);
addMetadata(XMPDM.COMPOSER, metadata, composer);
// Genre
AppleGenreBox genre = getOrNull(apple, AppleGenreBox.class);
addMetadata(XMPDM.GENRE, metadata, genre);
// Year
AppleRecordingYear2Box year = getOrNull(apple, AppleRecordingYear2Box.class);
if (year != null) {
metadata.set(XMPDM.RELEASE_DATE, year.getValue());
}
// Track number
AppleTrackNumberBox trackNum = getOrNull(apple, AppleTrackNumberBox.class);
if (trackNum != null) {
metadata.set(XMPDM.TRACK_NUMBER, trackNum.getA());
//metadata.set(XMPDM.NUMBER_OF_TRACKS, trackNum.getB()); // TODO
}
// Disc number
AppleDiskNumberBox discNum = getOrNull(apple, AppleDiskNumberBox.class);
if (discNum != null) {
metadata.set(XMPDM.DISC_NUMBER, discNum.getA());
}
// Compilation
AppleCompilationBox compilation = getOrNull(apple, AppleCompilationBox.class);
if (compilation != null) {
metadata.set(XMPDM.COMPILATION, (int)compilation.getValue());
}
// Comment
AppleCommentBox comment = getOrNull(apple, AppleCommentBox.class);
addMetadata(XMPDM.LOG_COMMENT, metadata, comment);
// Encoder
AppleEncoderBox encoder = getOrNull(apple, AppleEncoderBox.class);
if (encoder != null) {
metadata.set(XMP.CREATOR_TOOL, encoder.getValue());
}
// As text
for (Box box : apple.getBoxes()) {
if (box instanceof Utf8AppleDataBox) {
xhtml.element("p", ((Utf8AppleDataBox)box).getValue());
}
}
}
// TODO Check for other kinds too
}
// All done
xhtml.endDocument();
} finally {
tmp.dispose();
}
}