void TagLibExtractor::extract(ExtractionResult* result)
{
const QString fileUrl = result->inputUrl();
const QString mimeType = result->inputMimetype();
TagLib::FileRef file(fileUrl.toUtf8().constData(), true);
if (file.isNull()) {
return;
}
TagLib::Tag* tags = file.tag();
result->addType(Type::Audio);
TagLib::String artists;
TagLib::String albumArtists;
TagLib::String composers;
TagLib::String lyricists;
TagLib::StringList genres;
// Handling multiple tags in mpeg files.
if ((mimeType == QLatin1String("audio/mpeg")) || (mimeType == QLatin1String("audio/mpeg3")) || (mimeType == QLatin1String("audio/x-mpeg"))) {
TagLib::MPEG::File mpegFile(fileUrl.toUtf8().constData(), true);
if (mpegFile.ID3v2Tag() && !mpegFile.ID3v2Tag()->isEmpty()) {
TagLib::ID3v2::FrameList lstID3v2;
// Artist.
lstID3v2 = mpegFile.ID3v2Tag()->frameListMap()["TPE1"];
if (!lstID3v2.isEmpty()) {
for (TagLib::ID3v2::FrameList::ConstIterator it = lstID3v2.begin(); it != lstID3v2.end(); ++it) {
if (!artists.isEmpty()) {
artists += ", ";
}
artists += (*it)->toString();
}
}
// Album Artist.
lstID3v2 = mpegFile.ID3v2Tag()->frameListMap()["TPE2"];
if (!lstID3v2.isEmpty()) {
for (TagLib::ID3v2::FrameList::ConstIterator it = lstID3v2.begin(); it != lstID3v2.end(); ++it) {
if (!albumArtists.isEmpty()) {
albumArtists += ", ";
}
albumArtists += (*it)->toString();
}
}
// Composer.
lstID3v2 = mpegFile.ID3v2Tag()->frameListMap()["TCOM"];
if (!lstID3v2.isEmpty()) {
for (TagLib::ID3v2::FrameList::ConstIterator it = lstID3v2.begin(); it != lstID3v2.end(); ++it) {
if (!composers.isEmpty()) {
composers += ", ";
}
composers += (*it)->toString();
}
}
// Lyricist.
lstID3v2 = mpegFile.ID3v2Tag()->frameListMap()["TEXT"];
if (!lstID3v2.isEmpty()) {
for (TagLib::ID3v2::FrameList::ConstIterator it = lstID3v2.begin(); it != lstID3v2.end(); ++it) {
if (!lyricists.isEmpty()) {
lyricists += ", ";
}
lyricists += (*it)->toString();
}
}
// Genre.
lstID3v2 = mpegFile.ID3v2Tag()->frameListMap()["TCON"];
if (!lstID3v2.isEmpty()) {
for (TagLib::ID3v2::FrameList::ConstIterator it = lstID3v2.begin(); it != lstID3v2.end(); ++it) {
genres.append((*it)->toString());
}
}
}
}
// Handling multiple tags in Ogg containers.
{
TagLib::Ogg::FieldListMap lstOgg;
// FLAC files.
if (mimeType == QLatin1String("audio/flac")) {
TagLib::FLAC::File flacFile(fileUrl.toUtf8().constData(), true);
if (flacFile.xiphComment() && !flacFile.xiphComment()->isEmpty()) {
lstOgg = flacFile.xiphComment()->fieldListMap();
}
}
// Vorbis files.
if (mimeType == QLatin1String("audio/ogg") || mimeType == QLatin1String("audio/x-vorbis+ogg")) {
TagLib::Ogg::Vorbis::File oggFile(fileUrl.toUtf8().constData(), true);
if (oggFile.tag() && !oggFile.tag()->isEmpty()) {
lstOgg = oggFile.tag()->fieldListMap();
}
}
// Opus files.
if (mimeType == QLatin1String("audio/opus") || mimeType == QLatin1String("audio/x-opus+ogg")) {
TagLib::Ogg::Opus::File opusFile(fileUrl.toUtf8().constData(), true);
if (opusFile.tag() && !opusFile.tag()->isEmpty()) {
lstOgg = opusFile.tag()->fieldListMap();
}
}
// Handling OGG container tags.
if (!lstOgg.isEmpty()) {
TagLib::Ogg::FieldListMap::ConstIterator itOgg;
// Artist.
itOgg = lstOgg.find("ARTIST");
if (itOgg != lstOgg.end()) {
if (!artists.isEmpty()) {
artists += ", ";
}
artists += (*itOgg).second.toString(", ");
}
// Album Artist.
itOgg = lstOgg.find("ALBUMARTIST");
if (itOgg != lstOgg.end()) {
if (!albumArtists.isEmpty()) {
albumArtists += ", ";
}
albumArtists += (*itOgg).second.toString(", ");
}
// Composer.
itOgg = lstOgg.find("COMPOSER");
if (itOgg != lstOgg.end()) {
if (!composers.isEmpty()) {
composers += ", ";
}
composers += (*itOgg).second.toString(", ");
}
// Lyricist.
itOgg = lstOgg.find("LYRICIST");
if (itOgg != lstOgg.end()) {
if (!lyricists.isEmpty()) {
lyricists += ", ";
}
lyricists += (*itOgg).second.toString(", ");
}
// Genre.
itOgg = lstOgg.find("GENRE");
if (itOgg != lstOgg.end()) {
genres.append((*itOgg).second);
}
}
}
// Handling multiple tags in Musepack files.
if (mimeType == QLatin1String("audio/x-musepack")) {
TagLib::MPC::File mpcFile(fileUrl.toUtf8().constData(), true);
if (mpcFile.tag() && !mpcFile.tag()->isEmpty()) {
TagLib::APE::ItemListMap lstMusepack = mpcFile.APETag()->itemListMap();
TagLib::APE::ItemListMap::ConstIterator itMPC;
// Artist.
itMPC = lstMusepack.find("ARTIST");
if (itMPC != lstMusepack.end()) {
if (!artists.isEmpty()) {
artists += ", ";
}
artists += (*itMPC).second.toString();
}
// Album Artist.
itMPC = lstMusepack.find("ALBUMARTIST");
if (itMPC != lstMusepack.end()) {
if(!albumArtists.isEmpty()) {
albumArtists += ", ";
}
albumArtists += (*itMPC).second.toString();
}
// Composer.
itMPC = lstMusepack.find("COMPOSER");
if (itMPC != lstMusepack.end()) {
if (!composers.isEmpty()) {
composers += ", ";
}
composers += (*itMPC).second.toString();
}
// Lyricist.
itMPC = lstMusepack.find("LYRICIST");
if (itMPC != lstMusepack.end()) {
if (!lyricists.isEmpty()) {
lyricists += ", ";
}
lyricists += (*itMPC).second.toString();
}
// Genre.
itMPC = lstMusepack.find("GENRE");
if (itMPC != lstMusepack.end()) {
genres.append((*itMPC).second.toString());
}
}
}
if (!tags->isEmpty()) {
QString title = t2q(tags->title());
if (!title.isEmpty()) {
result->add(Property::Title, title);
}
QString comment = t2q(tags->comment());
if (!comment.isEmpty()) {
result->add(Property::Comment, comment);
}
if (genres.isEmpty()) {
genres.append(tags->genre());
}
for (uint i = 0; i < genres.size(); i++) {
QString genre = t2q(genres[i]).trimmed();
// Convert from int
bool ok = false;
int genreNum = genre.toInt(&ok);
if (ok) {
genre = t2q(TagLib::ID3v1::genre(genreNum));
}
result->add(Property::Genre, genre);
}
QString artistString;
if (artists.isEmpty()) {
artistString = t2q(tags->artist());
} else {
artistString = t2q(artists).trimmed();
}
QStringList artists = contactsFromString(artistString);
foreach(const QString& artist, artists) {
result->add(Property::Artist, artist);
}
QByteArray TagReader::LoadEmbeddedArt(const QString& filename) const {
if (filename.isEmpty()) return QByteArray();
qLog(Debug) << "Loading art from" << filename;
#ifdef Q_OS_WIN32
TagLib::FileRef ref(filename.toStdWString().c_str());
#else
TagLib::FileRef ref(QFile::encodeName(filename).constData());
#endif
if (ref.isNull() || !ref.file()) return QByteArray();
// MP3
TagLib::MPEG::File* file = dynamic_cast<TagLib::MPEG::File*>(ref.file());
if (file && file->ID3v2Tag()) {
TagLib::ID3v2::FrameList apic_frames =
file->ID3v2Tag()->frameListMap()["APIC"];
if (apic_frames.isEmpty()) return QByteArray();
TagLib::ID3v2::AttachedPictureFrame* pic =
static_cast<TagLib::ID3v2::AttachedPictureFrame*>(apic_frames.front());
return QByteArray((const char*)pic->picture().data(),
pic->picture().size());
}
// Ogg vorbis/speex
TagLib::Ogg::XiphComment* xiph_comment =
dynamic_cast<TagLib::Ogg::XiphComment*>(ref.file()->tag());
if (xiph_comment) {
TagLib::Ogg::FieldListMap map = xiph_comment->fieldListMap();
// Other than the below mentioned non-standard COVERART,
// METADATA_BLOCK_PICTURE
// is the proposed tag for cover pictures.
// (see http://wiki.xiph.org/VorbisComment#METADATA_BLOCK_PICTURE)
if (map.contains("METADATA_BLOCK_PICTURE")) {
TagLib::StringList pict_list = map["METADATA_BLOCK_PICTURE"];
for (std::list<TagLib::String>::iterator it = pict_list.begin();
it != pict_list.end(); ++it) {
QByteArray data(QByteArray::fromBase64(it->toCString()));
TagLib::ByteVector tdata(data.data(), data.size());
TagLib::FLAC::Picture p(tdata);
if (p.type() == TagLib::FLAC::Picture::FrontCover)
return QByteArray(p.data().data(), p.data().size());
}
// If there was no specific front cover, just take the first picture
QByteArray data(QByteArray::fromBase64(
map["METADATA_BLOCK_PICTURE"].front().toCString()));
TagLib::ByteVector tdata(data.data(), data.size());
TagLib::FLAC::Picture p(tdata);
return QByteArray(p.data().data(), p.data().size());
}
// Ogg lacks a definitive standard for embedding cover art, but it seems
// b64 encoding a field called COVERART is the general convention
if (!map.contains("COVERART")) return QByteArray();
return QByteArray::fromBase64(map["COVERART"].toString().toCString());
}
#ifdef TAGLIB_HAS_FLAC_PICTURELIST
// Flac
TagLib::FLAC::File* flac_file = dynamic_cast<TagLib::FLAC::File*>(ref.file());
if (flac_file && flac_file->xiphComment()) {
TagLib::List<TagLib::FLAC::Picture*> pics = flac_file->pictureList();
if (!pics.isEmpty()) {
// Use the first picture in the file - this could be made cleverer and
// pick the front cover if it's present.
std::list<TagLib::FLAC::Picture*>::iterator it = pics.begin();
TagLib::FLAC::Picture* picture = *it;
return QByteArray(picture->data().data(), picture->data().size());
}
}
#endif
// MP4/AAC
TagLib::MP4::File* aac_file = dynamic_cast<TagLib::MP4::File*>(ref.file());
if (aac_file) {
TagLib::MP4::Tag* tag = aac_file->tag();
const TagLib::MP4::ItemListMap& items = tag->itemListMap();
TagLib::MP4::ItemListMap::ConstIterator it = items.find("covr");
if (it != items.end()) {
const TagLib::MP4::CoverArtList& art_list = it->second.toCoverArtList();
if (!art_list.isEmpty()) {
// Just take the first one for now
const TagLib::MP4::CoverArt& art = art_list.front();
return QByteArray(art.data().data(), art.data().size());
}
}
}
return QByteArray();
}
int main(int argc, char *argv[])
{
for(int i = 1; i < argc; i++) {
cout << "******************** \"" << argv[i] << "\" ********************" << endl;
TagLib::FileRef f(argv[i]);
if(!f.isNull() && f.tag()) {
TagLib::Tag *tag = f.tag();
cout << "-- TAG --" << endl;
cout << "title - \"" << tag->title() << "\"" << endl;
cout << "artist - \"" << tag->artist() << "\"" << endl;
cout << "album artist - \"" << tag->albumArtist() << "\"" << endl;
cout << "album - \"" << tag->album() << "\"" << endl;
cout << "year - \"" << tag->year() << "\"" << endl;
cout << "comment - \"" << tag->comment() << "\"" << endl;
cout << "track - \"" << tag->track() << "\"" << endl;
cout << "genre - \"" << tag->genre() << "\"" << endl;
cout << "grouping - \"" << tag->grouping() << "\"" << endl;
TagLib::Ogg::XiphComment *comment = NULL;
TagLib::FLAC::File *flac = dynamic_cast<TagLib::FLAC::File *>(f.file());
if (flac) {
cout << "flac:" << endl;
cout << "id3v1 - \"" << flac->ID3v1Tag() << "\"" << endl;
cout << "id3v2 - \"" << flac->ID3v2Tag() << "\"" << endl;
cout << "xiph - \"" << flac->xiphComment() << "\"" << endl;
comment = flac->xiphComment();
}
if (!comment) {
comment = dynamic_cast<TagLib::Ogg::XiphComment *>(tag);
}
if (comment) {
TagLib::Ogg::FieldListMap fields = comment->fieldListMap();
for(TagLib::Ogg::FieldListMap::ConstIterator it = fields.begin(), end = fields.end(); it != end; it++) {
if (!it->second.isEmpty())
cout << "xiph:" << it->first << " \"" << it->second[0].substr(0,3) << "\"" << endl;
}
}
cout << "pictures- \"" << f.file()->pictures().size() << "\"" << endl;
TagLib::File::PictureList l = f.file()->pictures();
for (TagLib::File::_PictureList::ConstIterator i = l.begin(), end = l.end(); i != end; i++) {
cout << "\t" << (*i)->typeName() << ' ' << (*i)->mimeType() << ' ' << (*i)->base64data().size() << endl;
}
cout << "pictures- \"" << tag->pictures().size() << "\"" << endl;
}
if(!f.isNull() && f.audioProperties()) {
TagLib::AudioProperties *properties = f.audioProperties();
int seconds = properties->length() % 60;
int minutes = (properties->length() - seconds) / 60;
cout << "-- AUDIO --" << endl;
cout << "bitrate - " << properties->bitrate() << endl;
cout << "sample rate - " << properties->sampleRate() << endl;
cout << "channels - " << properties->channels() << endl;
cout << "length - " << minutes << ":" << formatSeconds(seconds) << endl;
}
}
return 0;
}
