C++ Tag::title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;
}

int main(int argc, char *argv[])
{
  for(int i = 1; i < argc; i++) {

    cout << "path:" << argv[i] << endl;

    TagLib::FileRef f(argv[i]);

    if(!f.isNull() && f.tag()) {

      TagLib::Tag *tag = f.tag();

      cout << "title:" << (tag->title()).toCString(true)   << endl;
      cout << "artist:" << (tag->artist()).toCString(true) << endl;
      cout << "album:" << (tag->album()).toCString(true)   << endl;
      cout << "albumartist:" << (tag->albumArtist()).toCString(true) << endl;
      cout << "track:" << tag->track() << endl;
      cout << "disc:"  << tag->cdNr() << endl;
    }

    if(!f.isNull() && f.audioProperties()) {

      TagLib::AudioProperties *properties = f.audioProperties();

      cout << "bitrate:" << properties->bitrate() << endl;
      cout << "length:" << properties->length()  << endl;
    }
  if(i!=argc-1)
    cout << "---" << endl;
  }
  return 0;
}

cFileInfoMenu::cFileInfoMenu(std::string mrl) : cOsdMenu( tr("File Info:"), 12)
{
	//set title
	//SetTitle(tr("mediaplayer - Id3 Info:"));
	mrl_ = mrl;
	fileInfoVec_ = GetFileInfo(mrl_);

	// Get title
	std::string title;
	TagLib::FileRef f( mrl.c_str() );
	if(!f.isNull() && f.tag())
	{
		TagLib::Tag *tag = f.tag();
								 // unicode = false
		title   = tag->title().stripWhiteSpace().toCString(false)  ;

		if (title.size())
		{
			char buffer[128];
			snprintf(buffer, 127, "File Info: %s", title.c_str());
			SetTitle(buffer);
			printf("setting title to : %s\n", buffer);
		}
	}

	ShowInfo();
}

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;
        }
    }
}

QList<QByteArray> MetaDetector::detectEncodings(const MetaPtr meta)
{
    if (meta->localPath.isEmpty()) {
        return QList<QByteArray>() << "UTF-8";
    }
    QByteArray                  detectByte;

    if (!meta->cuePath.isEmpty()) {
        QFile cueFile(meta->cuePath);
        if (cueFile.open(QIODevice::ReadOnly)) {
            detectByte =  cueFile.readAll();
            return detectEncodings(detectByte);
        }
    }

#ifdef _WIN32
    TagLib::FileRef f(meta->localPath.toStdWString().c_str());
#else
    TagLib::FileRef f(meta->localPath.toStdString().c_str());
#endif
    TagLib::Tag *tag = f.tag();

    if (tag) {
        detectByte += tag->title().toCString();
        detectByte += tag->artist().toCString();
        detectByte += tag->album().toCString();
    }

    return detectEncodings(detectByte);
}

bool parseAndWrite(const char* location, Json::Writer& writer)
{
  Json::Value metadata;
  metadata[LOCATION] = location;
  TagLib::FileRef f(location);

  if (f.isNull()){
    return false;
  }

  if (f.tag() && !f.tag()->isEmpty()){
    TagLib::Tag* tag = f.tag();
    TagLib::String artist = tag->artist();
    TagLib::String album = tag->artist();
    TagLib::String title = tag->title();

    uint track = tag->track();
    uint year = tag->year();

    metadata[TITLE] = title.toCString(true);
    metadata[ARTIST] = artist.toCString(true);
    metadata[ALBUM] = album.toCString(true);
    metadata[TRACK] = track;
    metadata[YEAR] = year;
  }

  std::cout << writer.write(metadata);
  return true;
}

void
M3uLoader::getTags( const QFileInfo& info )
{
    QByteArray fileName = QFile::encodeName( info.canonicalFilePath() );
    const char *encodedName = fileName.constData();

    TagLib::FileRef f( encodedName );
    TagLib::Tag *tag = f.tag();

    QString artist = TStringToQString( tag->artist() ).trimmed();
    QString album  = TStringToQString( tag->album() ).trimmed();
    QString track  = TStringToQString( tag->title() ).trimmed();

    if ( artist.isEmpty() || track.isEmpty() )
    {
        qDebug() << "Error parsing" << info.fileName();
        return;
    }
    else
    {
        qDebug() << Q_FUNC_INFO << artist << track << album;
        Tomahawk::query_ptr q = Tomahawk::Query::get( artist, track, album, uuid(), !m_createNewPlaylist );
        if ( !q.isNull() )
            m_tracks << q;
    }
}

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;
}