C++ File::ID3v1Tag方法代码示例

void
MetaBundle::readTags( TagLib::AudioProperties::ReadStyle readStyle )
{
    if( m_url.protocol() != "file" )
        return;

    const QString path = m_url.path();
    TagLib::FileRef fileref;
    TagLib::Tag *tag = 0;

    if( AmarokConfig::recodeID3v1Tags() && path.endsWith( ".mp3", false ) )
    {
        TagLib::MPEG::File *mpeg = new TagLib::MPEG::File( QFile::encodeName( path ), true, readStyle );
        fileref = TagLib::FileRef( mpeg );

        if( mpeg->isValid() )
            // we prefer ID3v1 over ID3v2 if recoding tags because
            // apparently this is what people who ignore ID3 standards want
            tag = mpeg->ID3v1Tag() ? (TagLib::Tag*)mpeg->ID3v1Tag() : (TagLib::Tag*)mpeg->ID3v2Tag();
    }

    else {
        fileref = TagLib::FileRef( QFile::encodeName( path ), true, readStyle );

        if( !fileref.isNull() )
            tag = fileref.tag();
    }

    if( !fileref.isNull() ) {
        if ( tag ) {
            #define strip( x ) TStringToQString( x ).stripWhiteSpace()
            m_title   = strip( tag->title() );
            m_artist  = strip( tag->artist() );
            m_album   = strip( tag->album() );
            m_comment = strip( tag->comment() );
            m_genre   = strip( tag->genre() );
            m_year    = tag->year() ? QString::number( tag->year() ) : QString();
            m_track   = tag->track() ? QString::number( tag->track() ) : QString();
            #undef strip

            m_isValidMedia = true;
        }

        init( fileref.audioProperties() );
    }

    //FIXME disabled for beta4 as it's simpler to not got 100 bug reports
    //else if( KMimeType::findByUrl( m_url )->is( "audio" ) )
    //    init( KFileMetaInfo( m_url, QString::null, KFileMetaInfo::Everything ) );
}

//.........这里部分代码省略.........
  TagLib::Ogg::Vorbis::File* oggVorbisFile = NULL;
  TagLib::Ogg::FLAC::File*   oggFlacFile = NULL;
  TagLib::S3M::File*         s3mFile = NULL;
  TagLib::TrueAudio::File*   ttaFile = NULL;
  TagLib::WavPack::File*     wvFile = NULL;
  TagLib::XM::File*          xmFile = NULL;
  TagLib::RIFF::WAV::File *  wavFile = NULL;
  TagLib::RIFF::AIFF::File * aiffFile = NULL;

  if (strExtension == "ape")
    file = apeFile = new APE::File(stream);
  else if (strExtension == "asf" || strExtension == "wmv" || strExtension == "wma")
    file = asfFile = new ASF::File(stream);
  else if (strExtension == "flac")
    file = flacFile = new FLAC::File(stream, ID3v2::FrameFactory::instance());
  else if (strExtension == "it")
    file = itFile = new IT::File(stream);
  else if (strExtension == "mod" || strExtension == "module" || strExtension == "nst" || strExtension == "wow")
    file = modFile = new Mod::File(stream);
  else if (strExtension == "mp4" || strExtension == "m4a" ||
           strExtension == "m4r" || strExtension == "m4b" ||
           strExtension == "m4p" || strExtension == "3g2")
    file = mp4File = new MP4::File(stream);
  else if (strExtension == "mpc")
    file = mpcFile = new MPC::File(stream);
  else if (strExtension == "mp3" || strExtension == "aac")
    file = mpegFile = new MPEG::File(stream, ID3v2::FrameFactory::instance());
  else if (strExtension == "s3m")
    file = s3mFile = new S3M::File(stream);
  else if (strExtension == "tta")
    file = ttaFile = new TrueAudio::File(stream, ID3v2::FrameFactory::instance());
  else if (strExtension == "wv")
    file = wvFile = new WavPack::File(stream);
  else if (strExtension == "aif" || strExtension == "aiff")
    file = aiffFile = new RIFF::AIFF::File(stream);
  else if (strExtension == "wav")
    file = wavFile = new RIFF::WAV::File(stream);
  else if (strExtension == "xm")
    file = xmFile = new XM::File(stream);
  else if (strExtension == "ogg")
    file = oggVorbisFile = new Ogg::Vorbis::File(stream);
  else if (strExtension == "oga") // Leave this madness until last - oga container can have Vorbis or FLAC
  {
    file = oggFlacFile = new Ogg::FLAC::File(stream);
    if (!file || !file->isValid())
    {
      delete file;
      oggFlacFile = NULL;
      file = oggVorbisFile = new Ogg::Vorbis::File(stream);
    }
  }

  if (!file || !file->isOpen())
  {
    delete file;
    delete stream;
    CLog::Log(LOGDEBUG, "file could not be opened for tag reading");
    return false;
  }

  APE::Tag *ape = NULL;
  ASF::Tag *asf = NULL;
  MP4::Tag *mp4 = NULL;
  ID3v1::Tag *id3v1 = NULL;
  ID3v2::Tag *id3v2 = NULL;
  Ogg::XiphComment *xiph = NULL;
  Tag *generic = NULL;

  if (apeFile)
    ape = apeFile->APETag(false);
  else if (asfFile)
    asf = asfFile->tag();
  else if (flacFile)
  {
    xiph = flacFile->xiphComment(false);
    id3v2 = flacFile->ID3v2Tag(false);
  }
  else if (mp4File)
    mp4 = mp4File->tag();
  else if (mpegFile)
  {
    id3v1 = mpegFile->ID3v1Tag(false);
    id3v2 = mpegFile->ID3v2Tag(false);
    ape = mpegFile->APETag(false);
  }
  else if (oggFlacFile)
    xiph = dynamic_cast<Ogg::XiphComment *>(oggFlacFile->tag());
  else if (oggVorbisFile)
    xiph = dynamic_cast<Ogg::XiphComment *>(oggVorbisFile->tag());
  else if (ttaFile)
    id3v2 = ttaFile->ID3v2Tag(false);
  else if (aiffFile)
    id3v2 = aiffFile->tag();
  else if (wavFile)
#if TAGLIB_MAJOR_VERSION > 1 || TAGLIB_MINOR_VERSION > 8
    id3v2 = wavFile->ID3v2Tag();
#else
    id3v2 = wavFile->tag();
#endif
  else if (wvFile)

/*!
 * \copydoc MetaIO::read()
 */
Metadata *MetaIOID3::read(QString filename)
{
    TagLib::MPEG::File *mpegfile = OpenFile(filename);

    if (!mpegfile)
        return NULL;

    TagLib::ID3v2::Tag *tag = mpegfile->ID3v2Tag();

    if (!tag)
    {
        delete mpegfile;
        return NULL;
    }

    // if there is no ID3v2 tag, try to read the ID3v1 tag and copy it to the ID3v2 tag structure
    if (tag->isEmpty())
    {
        TagLib::ID3v1::Tag *tag_v1 = mpegfile->ID3v1Tag();

        if (!tag_v1)
        {
            delete mpegfile;
            return NULL;
        }

        if (!tag_v1->isEmpty())
        {
            tag->setTitle(tag_v1->title());
            tag->setArtist(tag_v1->artist());
            tag->setAlbum(tag_v1->album());
            tag->setTrack(tag_v1->track());
            tag->setYear(tag_v1->year());
            tag->setGenre(tag_v1->genre());
        }
    }

    Metadata *metadata = new Metadata(filename);

    ReadGenericMetadata(tag, metadata);

    bool compilation = false;

    // Compilation Artist (TPE4 Remix) or fallback to (TPE2 Band)
    // N.B. The existance of a either frame is NOT an indication that this
    // is a compilation, but if it is then one of them will probably hold
    // the compilation artist.
    TextIdentificationFrame *tpeframe = NULL;
    TagLib::ID3v2::FrameList tpelist = tag->frameListMap()["TPE4"];
    if (tpelist.isEmpty() || tpelist.front()->toString().isEmpty())
        tpelist = tag->frameListMap()["TPE2"];
    if (!tpelist.isEmpty())
        tpeframe = (TextIdentificationFrame *)tpelist.front();

    if (tpeframe && !tpeframe->toString().isEmpty())
    {
        QString compilation_artist = TStringToQString(tpeframe->toString())
                                                                    .trimmed();
        metadata->setCompilationArtist(compilation_artist);
    }

    // MythTV rating and playcount, stored in POPM frame
    PopularimeterFrame *popm = findPOPM(tag, email);

    if (!popm)
    {
        if (!tag->frameListMap()["POPM"].isEmpty())
            popm = dynamic_cast<PopularimeterFrame *>
                                        (tag->frameListMap()["POPM"].front());
    }

    if (popm)
    {
        int rating = popm->rating();
        rating = static_cast<int>(((static_cast<float>(rating)/255.0)
                                                                * 10.0) + 0.5);
        metadata->setRating(rating);
        metadata->setPlaycount(popm->counter());
    }

    // Look for MusicBrainz Album+Artist ID in TXXX Frame
    UserTextIdentificationFrame *musicbrainz = find(tag,
                                            "MusicBrainz Album Artist Id");

    if (musicbrainz)
    {
        // If the MusicBrainz ID is the special "Various Artists" ID
        // then compilation is TRUE
        if (!compilation && !musicbrainz->fieldList().isEmpty())
            compilation = (MYTH_MUSICBRAINZ_ALBUMARTIST_UUID
            == TStringToQString(musicbrainz->fieldList().front()));
    }

    // TLEN - Ignored intentionally, some encoders write bad values
    // e.g. Lame under certain circumstances will always write a length of
    // 27 hours

//.........这里部分代码省略.........

bool mttFile::Open( QString filename )
{
    bool changed = false;

    fname = filename;

    fileref = new TagLib::FileRef( QFile::encodeName( filename ).constData() );
    if ( filename.endsWith( QString( ".mp3" ), Qt::CaseInsensitive ) ) {
        ismpeg = true;
        TagLib::MPEG::File *f = dynamic_cast<TagLib::MPEG::File *>(fileref->file());
        if ( f ) {
            if ( f->ID3v1Tag() ) {
                if ( !(f->ID3v2Tag()) ) {
					qDebug("ID3v1 found");
                    // Copy id3v1 tag to id3v2 tag
                    TagLib::ID3v1::Tag *v1tag = f->ID3v1Tag();
                    TagLib::ID3v2::Tag *v2tag = f->ID3v2Tag( true );
    
                    v2tag->setAlbum( v1tag->album() );
                    v2tag->setArtist( v1tag->artist() );
                    v2tag->setComment( v1tag->comment() );
                    v2tag->setGenre( v1tag->genre() );
                    v2tag->setTitle( v1tag->title() );
                    v2tag->setTrack( v1tag->track() );
                    v2tag->setYear( v1tag->year() );
                    changed = true;
                }
                else if ( f->ID3v2Tag() && f->ID3v1Tag() ) {
					qDebug("ID3v1 & v2 found");
                    // Fill gaps of ID3v2Tag from ID3v1Tag
                    TagLib::ID3v1::Tag *v1tag = f->ID3v1Tag();
                    TagLib::ID3v2::Tag *v2tag = f->ID3v2Tag();
    
                    if ( v2tag->album().isEmpty() ) {
                        v2tag->setAlbum( v1tag->album() );
                        changed = true;
                    }
                    if ( v2tag->artist().isEmpty() ) {
                        v2tag->setArtist( v1tag->artist() );
                        changed = true;
                    }
                    if ( v2tag->comment().isEmpty() ) {
                        v2tag->setComment( v1tag->comment() );
                        changed = true;
                    }
                    if ( v2tag->genre().isEmpty() ) {
                        v2tag->setGenre( v1tag->genre() );
                        changed = true;
                    }
                    if ( v2tag->title().isEmpty() ) {
                        v2tag->setTitle( v1tag->title() );
                        changed = true;
                    }
                    if ( v2tag->track() == 0 ) {
                        v2tag->setTrack( v1tag->track() );
                        changed = true;
                    }
                    if ( v2tag->year() == 0 ) {
                        v2tag->setYear( v1tag->year() );
                        changed = true;
                    }
                }
            }
        }
    }
    else if ( filename.endsWith( QString( ".ogg" ), Qt::CaseInsensitive ) ) {
        isogg = true;
    }
    else if ( filename.endsWith( QString( ".flac" ), Qt::CaseInsensitive ) ) {
        isflac = true;
    }

    delete fileref;
    fileref = NULL;

    return changed;
}

//.........这里部分代码省略.........
  else if (strExtension == "mp3" || strExtension == "aac")
    file = mpegFile = new MPEG::File(stream, ID3v2::FrameFactory::instance());
  else if (strExtension == "s3m")
    file = s3mFile = new S3M::File(stream);
  else if (strExtension == "tta")
    file = ttaFile = new TrueAudio::File(stream, ID3v2::FrameFactory::instance());
  else if (strExtension == "wv")
    file = wvFile = new WavPack::File(stream);
  else if (strExtension == "xm")
    file = xmFile = new XM::File(stream);
  else if (strExtension == "ogg")
    file = oggVorbisFile = new Ogg::Vorbis::File(stream);
  else if (strExtension == "oga") // Leave this madness until last - oga container can have Vorbis or FLAC
  {
    file = oggFlacFile = new Ogg::FLAC::File(stream);
    if (!file || !file->isValid())
    {
      delete file;
      oggFlacFile = NULL;
      file = oggVorbisFile = new Ogg::Vorbis::File(stream);
    }
  }

  if (!file || !file->isOpen())
  {
    delete file;
    delete stream;
    CLog::Log(LOGDEBUG, "file could not be opened for tag reading");
    return false;
  }

  APE::Tag *ape = NULL;
  ASF::Tag *asf = NULL;
  MP4::Tag *mp4 = NULL;
  ID3v1::Tag *id3v1 = NULL;
  ID3v2::Tag *id3v2 = NULL;
  Ogg::XiphComment *xiph = NULL;
  Tag *generic = NULL;

  if (apeFile)
    ape = apeFile->APETag(false);
  else if (asfFile)
    asf = asfFile->tag();
  else if (flacFile)
  {
    xiph = flacFile->xiphComment(false);
    id3v2 = flacFile->ID3v2Tag(false);
  }
  else if (mp4File)
    mp4 = mp4File->tag();
  else if (mpegFile)
  {
    id3v1 = mpegFile->ID3v1Tag(false);
    id3v2 = mpegFile->ID3v2Tag(false);
    ape = mpegFile->APETag(false);
  }
  else if (oggFlacFile)
    xiph = dynamic_cast<Ogg::XiphComment *>(oggFlacFile->tag());
  else if (oggVorbisFile)
    xiph = dynamic_cast<Ogg::XiphComment *>(oggVorbisFile->tag());
  else if (ttaFile)
    id3v2 = ttaFile->ID3v2Tag(false);
  else if (wvFile)
    ape = wvFile->APETag(false);
  else if (mpcFile)
    ape = mpcFile->APETag(false);
  else    // This is a catch all to get generic information for other files types (s3m, xm, it, mod, etc)
    generic = file->tag();

  if (file->audioProperties())
    tag.SetDuration(file->audioProperties()->length());

  if (asf)
    ParseASF(asf, art, tag);
  if (id3v1)
    ParseID3v1Tag(id3v1, art, tag);
  if (id3v2)
    ParseID3v2Tag(id3v2, art, tag);
  if (generic)
    ParseGenericTag(generic, art, tag);
  if (mp4)
    ParseMP4Tag(mp4, art, tag);
  if (xiph) // xiph tags override id3v2 tags in badly tagged FLACs
    ParseXiphComment(xiph, art, tag);
  if (ape && (!id3v2 || g_advancedSettings.m_prioritiseAPEv2tags)) // ape tags override id3v2 if we're prioritising them
    ParseAPETag(ape, art, tag);

  // art for flac files is outside the tag
  if (flacFile)
    SetFlacArt(flacFile, art, tag);

  if (!tag.GetTitle().empty() || !tag.GetArtist().empty() || !tag.GetAlbum().empty())
    tag.SetLoaded();
  tag.SetURL(strFileName);

  delete file;
  delete stream;
  
  return true;
}

/* LOAD UP THE FILE'S TAG
 * Search each file type individually so we can get individual tags for
 * custom tagging.
 */
TagDatac * tag_data_load (char *url, int *pvalid)
{
    TagData * data;
    TagLib::String s = url;
    int mtime;
    struct stat buf;
    if (!stat (url, &buf))
        mtime = (int) buf.st_mtime;


   /* FIXME: Using filename to find media type. GStreamer probe instead?
   */
    if(s.size() > 4) {
        if(s.substr(s.size() - 4, 4).upper() == ".OGG")
        {
            TagLib::Vorbis::File * f = new TagLib::Vorbis::File(url);
            if (! f->isValid ())
                return NULL;
            data = (TagData*) malloc (sizeof (TagData));
            data->file = new TagLib::FileRef (f);
            data->id3v2 = NULL;
            data->id3v1 = NULL;
            data->ape   = NULL;
            data->xiph  = f->tag ();
            data->mime  = "application/ogg";
            data->mtime = mtime;
            return reinterpret_cast<TagDatac *> (data);
        }
        if(s.substr(s.size() - 4, 4).upper() == ".MP3")
        {
            TagLib::MPEG::File * f = new TagLib::MPEG::File(url);
            if (! f->isValid ())
                return NULL;
            data = (TagData*) malloc (sizeof (TagData));
            data->file = new TagLib::FileRef (f);
            data->id3v2 = f->ID3v2Tag ();
            data->id3v1 = f->ID3v1Tag ();
            data->ape   = f->APETag ();
            data->xiph  = NULL;
            data->mime  = "audio/mpeg";
            data->mtime = mtime;
            return reinterpret_cast<TagDatac *>(data);
        }
        if(s.substr(s.size() - 5, 5).upper() == ".FLAC")
        {
            TagLib::FLAC::File * f = new TagLib::FLAC::File(url);
            if ((! f->isValid ())&& (pvalid != NULL)){
				*pvalid = -1;//paul add on 080827 merge from Olive
                return NULL;
			}
            data = (TagData*) malloc (sizeof (TagData));
            data->file = new TagLib::FileRef (f);
            data->id3v2 = f->ID3v2Tag ();
            data->id3v1 = f->ID3v1Tag ();
            data->ape   = NULL;
            data->xiph  = f->xiphComment ();
            data->mime  = "audio/x-flac";
            data->mtime = mtime;
            return reinterpret_cast<TagDatac *>(data);
        }
        if(s.substr(s.size() - 4, 4).upper() == ".MPC" || s.substr(s.size() - 4, 4).upper() == ".AAC")
        {
            TagLib::MPC::File * f = new TagLib::MPC::File(url);
            if (! f->isValid ())
                return NULL;
            data = (TagData*) malloc (sizeof (TagData));
            data->file = new TagLib::FileRef (f);
            data->id3v2 = NULL;
            data->id3v1 = f->ID3v1Tag ();
            data->ape   = f->APETag ();
            data->xiph  = NULL;
            data->mime  = "audio/x-musepack";
            data->mtime = mtime;
            return reinterpret_cast<TagDatac *>(data);
        }
    }
    return NULL;
}

int TagLibMetadata::setKey(const QString& key){

  if(f == NULL || !f->isValid()){
    qDebug("Cannot set grouping tag on invalid file object");
    return 1;
  }

  TagLib::MPEG::File* fileTestMpeg = dynamic_cast<TagLib::MPEG::File*>(f);
  if(fileTestMpeg != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestMpeg->ID3v2Tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::Frame* frm = new TagLib::ID3v2::TextIdentificationFrame("TKEY");
      frm->setText(TagLib::String(key.toUtf8().data()));
      tagTestId3v2->removeFrames("TKEY");
      tagTestId3v2->addFrame(frm);
      f->save();
      return 0;
    }else{
      TagLib::ID3v1::Tag* tagTestId3v1 = fileTestMpeg->ID3v1Tag();
      if(tagTestId3v1 != NULL){
        #ifdef Q_OS_WIN
          qDebug("ID3v1 does not support the Key tag");
        #else
          qDebug("ID3v1 does not support the Key tag (%s)",f->name());
        #endif
        return 1;
      }
    }
  }

  TagLib::RIFF::AIFF::File* fileTestAiff = dynamic_cast<TagLib::RIFF::AIFF::File*>(f);
  if(fileTestAiff != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestAiff->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::Frame* frm = new TagLib::ID3v2::TextIdentificationFrame("TKEY");
      frm->setText(TagLib::String(key.toUtf8().data()));
      tagTestId3v2->removeFrames("TKEY");
      tagTestId3v2->addFrame(frm);
      f->save();
      return 0;
    }
  }

  TagLib::RIFF::WAV::File* fileTestWav = dynamic_cast<TagLib::RIFF::WAV::File*>(f);
  if(fileTestWav != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestWav->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::Frame* frm = new TagLib::ID3v2::TextIdentificationFrame("TKEY");
      frm->setText(TagLib::String(key.toUtf8().data()));
      tagTestId3v2->removeFrames("TKEY");
      tagTestId3v2->addFrame(frm);
      f->save();
      return 0;
    }
  }

  TagLib::MP4::Tag* tagTestMp4 = dynamic_cast<TagLib::MP4::Tag*>(f->tag());
  if(tagTestMp4 != NULL){
    #ifdef Q_OS_WIN
      qDebug("iTunes metadata does not support the Key tag");
    #else
      qDebug("iTunes metadata does not support the Key tag (%s)",f->name());
    #endif
    return 1;
  }

  TagLib::ASF::Tag* tagTestAsf = dynamic_cast<TagLib::ASF::Tag*>(f->tag());
  if(tagTestAsf != NULL){
    tagTestAsf->setAttribute("WM/InitialKey",TagLib::String(key.toUtf8().data()));
    f->save();
    return 0;
  }

  TagLib::APE::Tag* tagTestApe = dynamic_cast<TagLib::APE::Tag*>(f->tag());
  if(tagTestApe != NULL){
    #ifdef Q_OS_WIN
      qDebug("APE metadata does not support the Key tag");
    #else
      qDebug("APE metadata does not support the Key tag (%s)",f->name());
    #endif
    return 1;
  }

  #ifdef Q_OS_WIN
    qDebug("Key tag write failed all tests");
  #else
    qDebug("Key tag write failed all tests on %s",f->name());
  #endif
  return 1;
}

int TagLibMetadata::setGrouping(const QString& grp){

  if(f == NULL || !f->isValid()){
    qDebug("Cannot set grouping tag on invalid file object");
    return 1;
  }

  TagLib::MPEG::File* fileTestMpeg = dynamic_cast<TagLib::MPEG::File*>(f);
  if(fileTestMpeg != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestMpeg->ID3v2Tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::Frame* frm = new TagLib::ID3v2::TextIdentificationFrame("TIT1");
      frm->setText(TagLib::String(grp.toUtf8().data()));
      tagTestId3v2->removeFrames("TIT1");
      tagTestId3v2->addFrame(frm);
      f->save();
      return 0;
    }else{
      TagLib::ID3v1::Tag* tagTestId3v1 = fileTestMpeg->ID3v1Tag();
      if(tagTestId3v1 != NULL){
        #ifdef Q_OS_WIN
          qDebug("ID3v1 does not support the Grouping tag");
        #else
          qDebug("ID3v1 does not support the Grouping tag (%s)",f->name());
        #endif
        return 1;
      }
    }
  }

  TagLib::RIFF::AIFF::File* fileTestAiff = dynamic_cast<TagLib::RIFF::AIFF::File*>(f);
  if(fileTestAiff != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestAiff->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::Frame* frm = new TagLib::ID3v2::TextIdentificationFrame("TIT1");
      frm->setText(TagLib::String(grp.toUtf8().data()));
      tagTestId3v2->removeFrames("TIT1");
      tagTestId3v2->addFrame(frm);
      f->save();
      return 0;
    }
  }

  TagLib::RIFF::WAV::File* fileTestWav = dynamic_cast<TagLib::RIFF::WAV::File*>(f);
  if(fileTestWav != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestWav->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::Frame* frm = new TagLib::ID3v2::TextIdentificationFrame("TIT1");
      frm->setText(TagLib::String(grp.toUtf8().data()));
      tagTestId3v2->removeFrames("TIT1");
      tagTestId3v2->addFrame(frm);
      f->save();
      return 0;
    }
  }

  TagLib::MP4::Tag* tagTestMp4 = dynamic_cast<TagLib::MP4::Tag*>(f->tag());
  if(tagTestMp4 != NULL){
    TagLib::StringList sl(TagLib::String(grp.toUtf8().data()));
    tagTestMp4->itemListMap()["\251grp"] = sl;
    tagTestMp4->save();
    f->save();
    return 0;
  }

  TagLib::ASF::Tag* tagTestAsf = dynamic_cast<TagLib::ASF::Tag*>(f->tag());
  if(tagTestAsf != NULL){
    tagTestAsf->setAttribute("WM/ContentGroupDescription",TagLib::String(grp.toUtf8().data()));
    f->save();
    return 0;
  }

  TagLib::APE::Tag* tagTestApe = dynamic_cast<TagLib::APE::Tag*>(f->tag());
  if(tagTestApe != NULL){
    tagTestApe->addValue("GROUPING",TagLib::String(grp.toUtf8().data()));
    f->save();
    return 0;
  }

  #ifdef Q_OS_WIN
    qDebug("Grouping tag write failed all tests");
  #else
    qDebug("Grouping tag write failed all tests on %s",f->name());
  #endif
  return 1;
}

QString TagLibMetadata::getKey() const{

  if(f == NULL || !f->isValid())
    return "";

  TagLib::MPEG::File* fileTestMpeg = dynamic_cast<TagLib::MPEG::File*>(f);
  if(fileTestMpeg != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestMpeg->ID3v2Tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::FrameList l = tagTestId3v2->frameListMap()["TKEY"];
      if(!l.isEmpty()){
        TagLib::String out = l.front()->toString();
        return QString::fromUtf8((out.toCString()));
      }
      return "";
    }
    TagLib::ID3v1::Tag* tagTestId3v1 = fileTestMpeg->ID3v1Tag();
    if(tagTestId3v1 != NULL){
      #ifdef Q_OS_WIN
        qDebug("ID3v1 does not support the Key tag");
      #else
        qDebug("ID3v1 does not support the Key tag (%s)",f->name());
      #endif
      return "N/A";
    }
  }

  TagLib::RIFF::AIFF::File* fileTestAiff = dynamic_cast<TagLib::RIFF::AIFF::File*>(f);
  if(fileTestAiff != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestAiff->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::FrameList l = tagTestId3v2->frameListMap()["TKEY"];
      if(!l.isEmpty()){
        TagLib::String out = l.front()->toString();
        return QString::fromUtf8((out.toCString()));
      }
      return "";
    }
  }

  TagLib::RIFF::WAV::File* fileTestWav = dynamic_cast<TagLib::RIFF::WAV::File*>(f);
  if(fileTestWav != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestWav->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::FrameList l = tagTestId3v2->frameListMap()["TKEY"];
      if(!l.isEmpty()){
        TagLib::String out = l.front()->toString();
        return QString::fromUtf8((out.toCString()));
      }
      return "";
    }
  }

  TagLib::MP4::Tag* tagTestMp4 = dynamic_cast<TagLib::MP4::Tag*>(f->tag());
  if(tagTestMp4 != NULL){
    #ifdef Q_OS_WIN
      qDebug("iTunes metadata does not support the Key tag");
    #else
      qDebug("iTunes metadata does not support the Key tag (%s)",f->name());
    #endif
    return "N/A";
  }

  TagLib::ASF::Tag* tagTestAsf = dynamic_cast<TagLib::ASF::Tag*>(f->tag());
  if(tagTestAsf != NULL){
    TagLib::ASF::AttributeList l = tagTestAsf->attributeListMap()["WM/InitialKey"];
    if(!l.isEmpty()){
      TagLib::String out = l.front().toString();
      return QString::fromUtf8((out.toCString()));
    }
    return "";
  }

  TagLib::APE::Tag* tagTestApe = dynamic_cast<TagLib::APE::Tag*>(f->tag());
  if(tagTestApe != NULL){
    #ifdef Q_OS_WIN
      qDebug("APE metadata does not support the Key tag");
    #else
      qDebug("APE metadata does not support the Key tag (%s)",f->name());
    #endif
    return "N/A";
  }

  #ifdef Q_OS_WIN
    qDebug("Key tag read failed all tests");
  #else
    qDebug("Key tag read failed all tests on %s",f->name());
  #endif

  return "N/A";
}

QString TagLibMetadata::getGrouping() const{

  if(f == NULL || !f->isValid())
    return "";

  TagLib::MPEG::File* fileTestMpeg = dynamic_cast<TagLib::MPEG::File*>(f);
  if(fileTestMpeg != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestMpeg->ID3v2Tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::FrameList l = tagTestId3v2->frameListMap()["TIT1"];
      if(!l.isEmpty()){
        TagLib::String out = l.front()->toString();
        return QString::fromUtf8((out.toCString()));
      }
      return "";
    }
    TagLib::ID3v1::Tag* tagTestId3v1 = fileTestMpeg->ID3v1Tag();
    if(tagTestId3v1 != NULL){
      #ifdef Q_OS_WIN
        qDebug("ID3v1 does not support the Grouping tag");
      #else
        qDebug("ID3v1 does not support the Grouping tag (%s)",f->name());
      #endif
      return "N/A";
    }
  }

  TagLib::RIFF::AIFF::File* fileTestAiff = dynamic_cast<TagLib::RIFF::AIFF::File*>(f);
  if(fileTestAiff != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestAiff->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::FrameList l = tagTestId3v2->frameListMap()["TIT1"];
      if(!l.isEmpty()){
        TagLib::String out = l.front()->toString();
        return QString::fromUtf8((out.toCString()));
      }
      return "";
    }
  }

  TagLib::RIFF::WAV::File* fileTestWav = dynamic_cast<TagLib::RIFF::WAV::File*>(f);
  if(fileTestWav != NULL){
    TagLib::ID3v2::Tag* tagTestId3v2 = fileTestWav->tag();
    if(tagTestId3v2 != NULL){
      TagLib::ID3v2::FrameList l = tagTestId3v2->frameListMap()["TIT1"];
      if(!l.isEmpty()){
        TagLib::String out = l.front()->toString();
        return QString::fromUtf8((out.toCString()));
      }
      return "";
    }
  }

  TagLib::MP4::Tag* tagTestMp4 = dynamic_cast<TagLib::MP4::Tag*>(f->tag());
  if(tagTestMp4 != NULL){
    TagLib::MP4::Item m = tagTestMp4->itemListMap()["\251grp"];
    if(m.isValid()){
      TagLib::String out = m.toStringList().front();
      return QString::fromUtf8((out.toCString()));
    }
    return "";
  }

  TagLib::ASF::Tag* tagTestAsf = dynamic_cast<TagLib::ASF::Tag*>(f->tag());
  if(tagTestAsf != NULL){
    TagLib::ASF::AttributeList l = tagTestAsf->attributeListMap()["WM/ContentGroupDescription"];
    if(!l.isEmpty()){
      TagLib::String out = l.front().toString();
      return QString::fromUtf8((out.toCString()));
    }
    return "";
  }

  TagLib::APE::Tag* tagTestApe = dynamic_cast<TagLib::APE::Tag*>(f->tag());
  if(tagTestApe != NULL){
    TagLib::APE::Item m = tagTestApe->itemListMap()["Grouping"];
    if(!m.isEmpty()){
      TagLib::String out = m.toStringList().front();
      return QString::fromUtf8((out.toCString()));
    }
    return "";
  }

  #ifdef Q_OS_WIN
    qDebug("Grouping tag read failed all tests");
  #else
    qDebug("Grouping tag read failed all tests on %s",f->name());
  #endif
  return "N/A";
}