C++ taglib::Tag类代码示例

Tag::Tag(const QString &filename)
    : m_filename(filename)
{
    TagLib::MPEG::File mpegfile(filename.toLocal8Bit().constData());
    TagLib::ID3v2::Tag* id3v2 = mpegfile.ID3v2Tag();
    if (id3v2 && !id3v2->isEmpty()) {
        readRegularTag(id3v2, m_data);

        int picnum = 0;

        TagLib::ID3v2::FrameList frames = id3v2->frameListMap()["APIC"]; // attached picture
        TagLib::ID3v2::FrameList::ConstIterator it = frames.begin();
        while (it != frames.end()) {
            TagLib::ID3v2::AttachedPictureFrame* apic = static_cast<TagLib::ID3v2::AttachedPictureFrame*>(*it);
            TagLib::ByteVector bytes = apic->picture();
            QImage img = QImage::fromData(reinterpret_cast<const uchar*>(bytes.data()), bytes.size());
            if (!img.isNull()) {
                m_data[QLatin1String("picture") + QString::number(picnum++)] = QVariant(img);
            }
            ++it;
        }

    } else {
        TagLib::FileRef fileref(filename.toLocal8Bit().constData());
        if (fileref.isNull())
            return;
        TagLib::Tag* tag = fileref.tag();
        if (!tag || tag->isEmpty())
            return;

        readRegularTag(tag, m_data);
    }
}

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;
    }
}

QVector<bool> TagsManager::writeTags(const QVector<SongFile>& songs)
{
    QVector<bool> result;

    for (SongFile const& song : songs)
    {
        bool success = false;

        if (!song.getAuthors().isEmpty() || !song.getTitle().isEmpty())
        {
            const QString songFilePath = song.getFilepath();
            TagLib::FileRef file(songFilePath.toStdString().c_str());

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

                tag->setArtist(song.getAuthors().join(";").toStdString());
                tag->setTitle(song.getTitle().toStdString());

                success = file.save();
            }
        }

        result.append(success);
    }

    return result;
}

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();
}

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);
}

JNIEXPORT jstring JNICALL Java_TagLibReader_getTitle (JNIEnv *env, jobject thisObj, jstring path) {
	const jchar *pathCStr = env->GetStringChars(path, NULL);
	TagLib::FileRef f(reinterpret_cast<const wchar_t*>(pathCStr));
	if(!f.isNull() && f.tag()) {
      TagLib::Tag *tag = f.tag();
      return env->NewStringUTF(tag->title().toCString(true));
    }
    else {
    	return NULL;
    }
}

bool WriteTag(const musik::Core::SongInfo& info)
{
    bool ret = true;

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

            tag->setArtist(info.GetArtist().c_str());
            tag->setAlbum(info.GetAlbum().c_str());
            tag->setTitle(info.GetTitle().c_str());
            tag->setGenre(info.GetGenre().c_str());
            tag->setYear(musik::Core::StringToInt(info.GetYear()));
            tag->setTrack(musik::Core::StringToInt(info.GetTrackNum()));
            tag->setComment(info.GetNotes().c_str());

            tag_file.save();
        }
    }
    catch (...)
    {
        ret = false;
        cout << "taglib crashed trying to write: " << info.GetFilename().c_str() << endl;
    }

    return ret;
}

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;
        }
    }
}

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;
}

    void MediaController::metaDataChanged()
    {
        QString extra_data;
        QByteArray encoded = QFile::encodeName(current_file.path());
        TagLib::FileRef ref(encoded.data(), true, TagLib::AudioProperties::Fast);
        if (ref.isNull())
        {
            info_label->setText(i18n("Playing: <b>%1</b>", current_file.name()));
            return;
        }

        TagLib::Tag* tag = ref.tag();
        if (!tag)
        {
            info_label->setText(i18n("Playing: <b>%1</b>", current_file.name()));
            return;
        }

        QString artist = t2q(tag->artist());
        QString title =  t2q(tag->title());
        QString album = t2q(tag->album());

        bool has_artist = !artist.isEmpty();
        bool has_title = !title.isEmpty();
        bool has_album = !album.isEmpty();

        if (has_artist && has_title && has_album)
        {
            extra_data = i18n("<b>%2</b> - <b>%1</b> (Album: <b>%3</b>)", title, artist, album);
            info_label->setText(extra_data);
        }
        else if (has_title && has_artist)
        {
            extra_data = i18n("<b>%2</b> - <b>%1</b>", title, artist);
            info_label->setText(extra_data);
        }
        else if (has_title)
        {
            extra_data = i18n("<b>%1</b>", title);
            info_label->setText(extra_data);
        }
        else
        {
            info_label->setText(i18n("<b>%1</b>", current_file.name()));
        }
    }

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;
}

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;
}

string scan_file(const char* path)
{
    TagLib::FileRef f(path);
    if (!f.isNull() && f.tag()) {
        TagLib::Tag *tag = f.tag();
        int filesize = boost::filesystem::file_size(path);
        int bitrate = 0;
        int duration = 0;
        if (f.audioProperties()) {
            TagLib::AudioProperties *properties = f.audioProperties();
            duration = properties->length();
            bitrate = properties->bitrate();
        }
        string artist = tag->artist().toCString(true);
        string album  = tag->album().toCString(true);
        string track  = tag->title().toCString(true);
        boost::trim(artist);
        boost::trim(album);
        boost::trim(track);
        if (artist.length()==0 || track.length()==0) {
            return "{\"error\" : \"no tags\"}\n";
        }
        string ext(toUtf8(boost::filesystem::extension(path)));
        string mimetype = ext2mime(boost::to_lower_copy(ext));
        // turn it into a url by prepending file://
        // because we pass all urls to curl:
        string urlpath = urlify( toUtf8(path) );

        ostringstream os;
        os      <<  "{  \"url\" : \"" << urlpath << "\","
                    "   \"filesize\" : " << filesize << ","
                    "   \"mimetype\" : \"" << mimetype << "\","
                    "   \"artist\" : \"" << tidy(artist) << "\","
                    "   \"album\" : \"" << tidy(album) << "\","
                    "   \"track\" : \"" << tidy(track) << "\","
                    "   \"duration\" : " << duration << ","
                    "   \"bitrate\" : " << bitrate << ","
                    "   \"trackno\" : " << tag->track()

                <<  "}\n";
        return os.str();
    }
    return "{\"error\" : \"no tags\"}\n";
}