C++ Tag::genre方法代码示例

bool MP3::readID3v2(const std::string& filename, Metadata& meta) {
	// After reading http://mail.kde.org/pipermail/taglib-devel/2008-March/000902.html
	// adding a big lock seems reasonable
	try {
		taglib_mutex.lock();	
		TagLib::MPEG::File f(filename.c_str());
		
		if (f.isValid() && f.tag()) {
			TagLib::Tag* pTag = f.tag();
			meta.interpret = pTag->artist().isNull() ? "" : pTag->artist().to8Bit(true);
			meta.album = pTag->album().isNull() ? "" : pTag->album().to8Bit(true);
			meta.title = pTag->title().isNull() ? "" : pTag->title().to8Bit(true);
			meta.genre = pTag->genre().isNull() ? "" : pTag->genre().to8Bit(true);
			meta.track_no = pTag->track();
			meta.year = pTag->year();
			taglib_mutex.unlock();
			return meta.complete();
		}
	} catch (const std::exception&) {
		taglib_mutex.unlock();
		// ...
	}
	
	return false;
}

void Track::readTags()
{
    QByteArray fileName = QFile::encodeName( p->url.toLocalFile() );
    const char * encodedName = fileName.constData();
    TagLib::FileRef fileref = TagLib::FileRef( encodedName, true, TagLib::AudioProperties::Fast);

   if ( !fileref.isNull() )
   {
        if( fileref.tag() )
        {
            TagLib::Tag *tag = fileref.tag();

            p->title   = !tag->title().isNull() ? TStringToQString( tag->title() ).trimmed() : QObject::tr("Unknown");
            p->artist  = !tag->artist().isNull() ? TStringToQString( tag->artist() ).trimmed() : QObject::tr("Unknown");
            p->album   = !tag->album().isNull() ? TStringToQString( tag->album() ).trimmed() : QObject::tr("Unknown");
            p->comment = TStringToQString( tag->comment() ).trimmed();
            p->genre   = !tag->genre().isNull() ? TStringToQString( tag->genre() ).trimmed() : QObject::tr("Unknown");
            p->year    = tag->year() ? QString::number( tag->year() ) : QString::null;
            p->tracknumber   = tag->track() ? QString::number( tag->track() ) : QString::null;
            p->length     = fileref.audioProperties()->length();
            p->counter = 0;
            p->rate = 0;

            //polish up empty tags
            if( p->title == QObject::tr("Unknown") ) {
                QFileInfo fileInfo(p->url.toLocalFile());
                p->title = fileInfo.fileName().replace( '_', ' ' ).replace('.' + fileInfo.suffix(),"") ;
            }
        }
    }

}

bool MetaData(const char* filepath, cFields& fields, cRow& props)
{
#define ADD(x, t) do { if (t) { fields.push_back(x); props.push_back(t); } } while(0)
#define ADDSTRING(x, t) do { if (!t.empty()) { fields.push_back(x); props.push_back(t); } } while(0)
#define ADDINT(x, t) do { std::string c = *itoa(t); if (!c.empty()){ fields.push_back(x); props.push_back(c);} } while(0)
    
    TagLib::FileRef f(filepath);

    fields.clear();
    props.clear();

    //cTag t;
    //const char* tmp = NULL;
    std::string tmp;
    
    if (f.isNull()) 
    {
        std::cerr<< "Taglib failed on " << filepath << std::endl;
        ADD("metadata_needs_update", "2"); // failure
        return false;
    }
   
    TagLib::Tag *tag = f.tag();
    
    if (tag) 
    {
#if 0
      tmp   = toString(tag->title()).c_str();   ADD("title",   tmp);
      tmp   = toString(tag->artist()).c_str();  ADD("artist",  tmp);
      tmp   = toString(tag->album()).c_str();   ADD("album",   tmp);
      tmp   = toString(tag->comment()).c_str(); ADD("comment", tmp);
      tmp   = toString(tag->genre()).c_str();   ADD("genre",   tmp);
#else
        tmp   = toString(tag->title());   ADDSTRING("title",   tmp);
        tmp   = toString(tag->artist());  ADDSTRING("artist",  tmp);
        tmp   = toString(tag->album());   ADDSTRING("album",   tmp);
        tmp   = toString(tag->comment()); ADDSTRING("comment", tmp);
        tmp   = toString(tag->genre());   ADDSTRING("genre",   tmp);
#endif
      
      //ADDINT("track", tag->track());
      ADDINT("year",  tag->year());
    }
    
    TagLib::AudioProperties *prop = f.audioProperties();
    if (prop) 
    {
        ADDINT("bitrate",    prop->bitrate());
        ADDINT("samplerate", prop->sampleRate());
      //  ADDINT("channels",   prop->channels());
        ADDINT("length" ,    prop->length());
    }
 
    ADD("metadata_needs_update", "0");
    return true;
}

Tune* tuneFromFile(const QString& file)
{
	Tune* tune = new Tune(false);
	tune->file = file;

	TagLib::FileRef ref = fileName2TaglibRef(file);
	if(!ref.isNull()) {
		if(ref.tag()) {
			TagLib::Tag* tag = ref.tag();
			tune->artist = safeTagLibString2QString( tag->artist() );
			tune->album = safeTagLibString2QString( tag->album() );
			tune->title = safeTagLibString2QString( tag->title() );
			tune->trackNumber = QString::number( tag->track() );
			tune->genre = safeTagLibString2QString( tag->genre() );
		}

		Qomp::loadCover(tune, ref.file());

		if(ref.audioProperties()) {
			TagLib::AudioProperties *prop = ref.audioProperties();
			tune->duration = Qomp::durationSecondsToString( prop->length() );
			tune->bitRate = QString::number( prop->bitrate() );
		}

		tune->setMetadataResolved(true);
	}

	return tune;
}

void getMp3Info(const WCHAR* fileName, MP3Info &info)
{
    TagLib::FileRef f(fileName);

    if (!f.isNull() && f.tag())
    {
        TagLib::Tag *tag = f.tag();

        info.tag[0] = tag->title().toWString();
        info.tag[1] = tag->artist().toWString();
        info.tag[2] = tag->album().toWString();
        info.tag[3] = tag->comment().toWString();
        info.tag[4] = tag->genre().toWString();
        info.year = tag->year();
        info.track = tag->track();

        TagLib::PropertyMap tags = f.file()->properties();

        if (!f.isNull() && f.audioProperties()) 
        {
            TagLib::AudioProperties *properties = f.audioProperties();

            int seconds = properties->length() % 60;
            int minutes = (properties->length() - seconds) / 60;

            info.bitrate = properties->bitrate();
            info.sample_rate = properties->sampleRate();
            info.channels = properties->channels();
            info.length_minutes = minutes;
            info.length_seconds = seconds;
        }
    }
}

AlbumTrack::AlbumTrack(Album* album, QString trackPath)
{
    this->path = trackPath;
    this->number = 0;
    this->artist = "Unknown Artist";
    this->album = album;
    this->genre = "Unknown Genre";

    TagLib::FileRef f(trackPath.toStdString().c_str());
    if(!f.isNull() && f.tag())
    {
        TagLib::Tag *tag = f.tag();
        title = QString(tag->title().toCString());
        number = tag->track();
        artist = QString(tag->artist().toCString());
        albumName = QString(tag->album().toCString());
        genre = QString(tag->genre().toCString());
    }
    if(!f.isNull() && f.audioProperties())
    {
        TagLib::AudioProperties *properties = f.audioProperties();
        duration = properties->length() * 1000;
        //Weil Fmod die gerne in Millisekunden hätte
    }
}

int handle_file(const char* filepath, const char* filekey, AudioFileRecordStore& record_store)
{
    bool record_exists = record_store.find_record(filekey) != NULL;

    // Scanning a file for tags is expensive, so only do it if required.
    if(record_exists
            && !record_store.record_update_required(filekey))
    {
        // no update reqquired so has been handled.
        return 1;
    }

    TagLib::FileRef f(filepath);
    if (!f.isNull() && f.tag())
    {
        AudioFileRecord &record = record_store.get_record(filekey);
        record.update_start();

        if (verbose)
        {
            TagLib::Tag *tag = f.tag();
            std::cout << filepath << endl;
            std::cout << filekey << endl;
            std::cout << "-- TAG (basic) --" << endl;
            std::cout << "title   - \"" << tag->title()   << "\"" << endl;
            std::cout << "artist  - \"" << tag->artist()  << "\"" << endl;
            std::cout << "album   - \"" << tag->album()   << "\"" << endl;
            std::cout << "year    - \"" << tag->year()    << "\"" << endl;
            std::cout << "comment - \"" << tag->comment() << "\"" << endl;
            std::cout << "track   - \"" << tag->track()   << "\"" << endl;
            std::cout << "genre   - \"" << tag->genre()   << "\"" << endl;
        }

        TagLib::PropertyMap tags = f.file()->properties();

        for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i)
        {
            for(TagLib::StringList::ConstIterator j = i->second.begin(); j != i->second.end(); ++j) 
            {
                record.update(i->first.toCString(true), j->toCString(true));
            }
        }

        if (f.audioProperties())
        {
            TagLib::AudioProperties *properties = f.audioProperties();
            record.update(audio_tags::BITRATE, properties->bitrate());
            record.update(audio_tags::LENGTH, properties->length());
            record.update(audio_tags::SAMPLERATE, properties->sampleRate());
            record.update(audio_tags::CHANNELS, properties->channels());
        }

        record.update_complete();
        return 1;
    }

    return 0;
}

TagLibTokenizer::TagLibTokenizer(const Document *pDocument) :
	Tokenizer(NULL),
	m_pTagDocument(NULL)
{
	if (pDocument != NULL)
	{
		Url urlObj(pDocument->getLocation());
		string pseudoContent;

		if ((urlObj.isLocal() == true) &&
			(urlObj.getFile().empty() == false))
		{
			string location(urlObj.getLocation());
			string trackTitle;

			location += "/";
			location += urlObj.getFile();

			TagLib::FileRef fileRef(location.c_str(), false);
			if (fileRef.isNull() == false)
			{
				TagLib::Tag *pTag = fileRef.tag();
				if ((pTag != NULL) &&
					(pTag->isEmpty() == false))
				{
					char yearStr[64];

					trackTitle = pTag->title().to8Bit(); 
					trackTitle += " ";
					trackTitle += pTag->artist().to8Bit();

					pseudoContent = trackTitle;
					pseudoContent += " ";
					pseudoContent += pTag->album().to8Bit();
					pseudoContent += " ";
					pseudoContent += pTag->comment().to8Bit();
					pseudoContent += " ";
					pseudoContent += pTag->genre().to8Bit();
					snprintf(yearStr, 64, " %u", pTag->year());
					pseudoContent += yearStr;
				}
			}
			else
			{
				trackTitle = pseudoContent = pDocument->getTitle();
			}

			m_pTagDocument = new Document(trackTitle, pDocument->getLocation(),
				pDocument->getType(), pDocument->getLanguage());
			m_pTagDocument->setData(pseudoContent.c_str(), pseudoContent.length());
			m_pTagDocument->setTimestamp(pDocument->getTimestamp());
			m_pTagDocument->setSize(pDocument->getSize());

			// Give the result to the parent class
			setDocument(m_pTagDocument);
		}
	}
}

bool ReadTag(const musik::Core::String& fn, musik::Core::SongInfo& target)
{
    bool ret = true;

    musik::Core::Filename mfn(fn);

    target.SetFilename(fn);
    target.SetFormat("Ogg Vorbis");

    try
    {
#if defined (WIN32)
        TagLib::FileRef tag_file(fn.c_str());
#else    
        TagLib::FileRef tag_file(utf16to8(fn, true).c_str());
#endif
        if (!tag_file.isNull())
        {
            if (tag_file.tag())
            {
                TagLib::Tag *tag = tag_file.tag();        

                target.SetArtist(musik::Core::utf8to16(tag->artist().to8Bit(true)));
                target.SetAlbum(musik::Core::utf8to16(tag->album().to8Bit(true)));
                target.SetTitle(musik::Core::utf8to16(tag->title().to8Bit(true)));
                target.SetGenre(musik::Core::utf8to16(tag->genre().to8Bit(true)));
                target.SetNotes(musik::Core::utf8to16(tag->comment().to8Bit(true)));

                target.SetYear(musik::Core::IntToString(tag->year()));
                target.SetTrackNum(musik::Core::IntToString(tag->track()));
            }

            if (tag_file.audioProperties())
            {
                TagLib::AudioProperties *properties = tag_file.audioProperties();
                int duration = properties->length() * 1000;
                target.SetBitrate(musik::Core::IntToString(properties->bitrate()));
                target.SetDuration(musik::Core::IntToString(duration));
            }
        }

        // if the title is empty, then use the
        // filename...
        if (target.GetTitle().IsEmpty())
        {
            musik::Core::Filename MFN(fn);
            target.SetTitle(MFN.GetJustFilename());
        }
    }
    catch (...)
    {
        ret = false;
        cout << "taglib crashed reading: " << fn.c_str() << endl;
    }

    return ret;
}

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 (basic) --" << endl;
      cout << "title   - \"" << tag->title()   << "\"" << endl;
      cout << "artist  - \"" << tag->artist()  << "\"" << 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;

      TagLib::PropertyMap tags = f.file()->properties();

      unsigned int longest = 0;
      for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
        if (i->first.size() > longest) {
          longest = i->first.size();
        }
      }

      cout << "-- TAG (properties) --" << endl;
      for(TagLib::PropertyMap::ConstIterator i = tags.begin(); i != tags.end(); ++i) {
        for(TagLib::StringList::ConstIterator j = i->second.begin(); j != i->second.end(); ++j) {
          cout << left << std::setw(longest) << i->first << " - " << '"' << *j << '"' << 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 << ":" << setfill('0') << setw(2) << seconds << endl;
    }
  }
  return 0;
}

void DataStore::addSongToLibrary(const Phonon::MediaSource& song, QSqlQuery &addQuery){
  QString fileName = song.fileName();
  QString songName;
  QString artistName;
  QString albumName;
  QString genre;
  int track;
  int duration;
  TagLib::FileRef f(fileName.toStdString().c_str());
  if(!f.isNull() && f.tag() && f.audioProperties()){
    TagLib::Tag *tag = f.tag();
    songName = TStringToQString(tag->title());
    artistName = TStringToQString(tag->artist());
    albumName = TStringToQString(tag->album());
    genre = TStringToQString(tag->genre());
    duration = f.audioProperties()->length();
    track = tag->track();
  }
  else{
    //TODO throw error
    return;
  }

  if(songName == ""){
    songName = unknownSongTitle();
  }
  if(artistName == ""){
    artistName = unknownSongArtist();
  }
  if(albumName == ""){
    albumName = unknownSongAlbum();
  }
  if(genre == ""){
    genre = unknownGenre();
  }

  Logger::instance()->log("adding song with title: " + songName + " to database");

  library_song_id_t hostId =-1;

  addQuery.bindValue(":song", songName);
  addQuery.bindValue(":artist", artistName);
  addQuery.bindValue(":album", albumName);
  addQuery.bindValue(":genre", genre);
  addQuery.bindValue(":track", track);
  addQuery.bindValue(":file", fileName);
  addQuery.bindValue(":duration", duration);
  EXEC_INSERT(
    "Failed to add song library" << songName.toStdString(), 
    addQuery,
    hostId,
    library_song_id_t)
}

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   - \"" << tag->album()   << "\"" << endl;
            cout << "year    - \"" << tag->year()    << "\"" << endl;
            cout << "comment - \"" << tag->comment() << "\"" << endl;
            cout << "track   - \"" << tag->track()   << "\"" << endl;
            cout << "genre   - \"" << tag->genre()   << "\"" << 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;
}

bool mediaTag(Artwork *art, TagLib::File *f)
{
    Q_ASSERT(f != NULL);
    Q_ASSERT(f->tag());

    TagLib::Tag *tag = f->tag();
    art->filetype = FILETYPE_UNKNOWN;

    // The basic stuff!!!
    art->artist = TStringToQString(tag->artist()).trimmed();
    art->album = TStringToQString(tag->album()).trimmed();
    art->track = TStringToQString(tag->title()).trimmed();
    art->genre = TStringToQString(tag->genre()).trimmed();
    art->year = tag->year();
    art->trackNo = tag->track();

    // we need something to search on!
    if (art->artist == "" && art->album == "" && art->track == "") {
        return false;
    }

    // Any audio properties???
    if (f->audioProperties()) {
        TagLib::AudioProperties *properties = f->audioProperties();

        int seconds = properties->length() % 60;
        int minutes = (properties->length() - seconds) / 60;
        art->duration = minutes * 60 + seconds;

        art->bitRate = properties->bitrate();
        art->sampleRate = properties->sampleRate();
        art->channels = properties->channels();
    }

    art->makeSearchable();
    return true;
}

	void FileStore::scan(const string & a_path) {
		if (!fs::exists(a_path)) 
			return;
		if (fs::is_directory(a_path)) {
			fs::directory_iterator end; // default construction yields past-the-end
			for (fs::directory_iterator curr(a_path); curr != end; ++curr) {
				fs::path p = curr->path();
				string s = p.string();
				scan(s);
			}
		} else if (fs::is_regular_file(a_path)) {
			if (pathExists(a_path))
				return;
			TagLib::FileRef file_ref(a_path.c_str(), false);
			if (!file_ref.isNull() && file_ref.tag()) {
				cerr << "indexing " << a_path << endl;
				TagLib::Tag *t = file_ref.tag();
				string artist = t->artist().to8Bit(true);
				string album = t->album().to8Bit(true);
				string title = t->title().to8Bit(true);
				string genre = t->genre().to8Bit(true);
				string year = t->year() > 0 ? lexical_cast<string>(t->year()) : "";
				string track = t->track() > 0 ? lexical_cast<string>(t->track()) : "";
				string uri = "file://" + a_path;
				shared_ptr<UUID> fileID(generateID());
				addField(*fileID, ARTIST, artist);
				addField(*fileID, ARTIST, artist);
				addField(*fileID, ALBUM, album);
				addField(*fileID, YEAR, year);
				addField(*fileID, TITLE, title);
				addField(*fileID, GENRE, genre);
				addField(*fileID, TRACK, track);
				addField(*fileID, URI, uri);
			}
		}
	}

bool SoundSource::processTaglibFile(TagLib::File& f) {
    if (s_bDebugMetadata)
        qDebug() << "Parsing" << getFilename();

    if (f.isValid()) {
        TagLib::Tag *tag = f.tag();
        if (tag) {
            QString title = TStringToQString(tag->title());
            setTitle(title);

            QString artist = TStringToQString(tag->artist());
            setArtist(artist);

            QString album = TStringToQString(tag->album());
            setAlbum(album);

            QString comment = TStringToQString(tag->comment());
            setComment(comment);

            QString genre = TStringToQString(tag->genre());
            setGenre(genre);

            int iYear = tag->year();
            QString year = "";
            if (iYear > 0) {
                year = QString("%1").arg(iYear);
                setYear(year);
            }

            int iTrack = tag->track();
            QString trackNumber = "";
            if (iTrack > 0) {
                trackNumber = QString("%1").arg(iTrack);
                setTrackNumber(trackNumber);
            }

            if (s_bDebugMetadata)
                qDebug() << "TagLib" << "title" << title << "artist" << artist << "album" << album << "comment" << comment << "genre" << genre << "year" << year << "trackNumber" << trackNumber;
        }

        TagLib::AudioProperties *properties = f.audioProperties();
        if (properties) {
            int lengthSeconds = properties->length();
            int bitrate = properties->bitrate();
            int sampleRate = properties->sampleRate();
            int channels = properties->channels();

            if (s_bDebugMetadata)
                qDebug() << "TagLib" << "length" << lengthSeconds << "bitrate" << bitrate << "sampleRate" << sampleRate << "channels" << channels;

            setDuration(lengthSeconds);
            setBitrate(bitrate);
            setSampleRate(sampleRate);
            setChannels(channels);
        }

        // If we didn't get any audio properties, this was a failure.
        return (properties!=NULL);
    }
    return false;
}