C++ CFileItem::GetMusicInfoTag方法代码示例

bool CMusicThumbLoader::FillLibraryArt(CFileItem &item)
{
  CMusicInfoTag &tag = *item.GetMusicInfoTag();
  if (tag.GetDatabaseId() > -1 && !tag.GetType().empty())
  {
    m_musicDatabase->Open();
    map<string, string> artwork;
    if (m_musicDatabase->GetArtForItem(tag.GetDatabaseId(), tag.GetType(), artwork))
      item.SetArt(artwork);
    else if (tag.GetType() == "song")
    { // no art for the song, try the album
      ArtCache::const_iterator i = m_albumArt.find(tag.GetAlbumId());
      if (i == m_albumArt.end())
      {
        m_musicDatabase->GetArtForItem(tag.GetAlbumId(), "album", artwork);
        i = m_albumArt.insert(make_pair(tag.GetAlbumId(), artwork)).first;
      }
      if (i != m_albumArt.end())
      {
        item.AppendArt(i->second, "album");
        for (map<string, string>::const_iterator j = i->second.begin(); j != i->second.end(); ++j)
          item.SetArtFallback(j->first, "album." + j->first);
      }
    }
    if (tag.GetType() == "song" || tag.GetType() == "album")
    { // fanart from the artist
      string fanart = m_musicDatabase->GetArtistArtForItem(tag.GetDatabaseId(), tag.GetType(), "fanart");
      if (!fanart.empty())
      {
        item.SetArt("artist.fanart", fanart);
        item.SetArtFallback("fanart", "artist.fanart");
      }
    }
    m_musicDatabase->Close();
  }
  return !item.GetArt().empty();
}

int CMusicInfoScanner::RetrieveMusicInfo(CFileItemList& items, const CStdString& strDirectory)
{
  CSongMap songsMap;

  // get all information for all files in current directory from database, and remove them
  if (m_musicDatabase.RemoveSongsFromPath(strDirectory, songsMap))
    m_needsCleanup = true;

  VECSONGS songsToAdd;
  // for every file found, but skip folder
  for (int i = 0; i < items.Size(); ++i)
  {
    CFileItem* pItem = items[i];
    CStdString strExtension;
    CUtil::GetExtension(pItem->m_strPath, strExtension);

    if (m_bStop)
      return 0;

    // dont try reading id3tags for folders, playlists or shoutcast streams
    if (!pItem->m_bIsFolder && !pItem->IsPlayList() && !pItem->IsShoutCast() && !pItem->IsPicture())
    {
      m_currentItem++;
//      CLog::Log(LOGDEBUG, "%s - Reading tag for: %s", __FUNCTION__, pItem->m_strPath.c_str());

      // grab info from the song
      CSong *dbSong = songsMap.Find(pItem->m_strPath);

      CMusicInfoTag& tag = *pItem->GetMusicInfoTag();
      if (!tag.Loaded() )
      { // read the tag from a file
        auto_ptr<IMusicInfoTagLoader> pLoader (CMusicInfoTagLoaderFactory::CreateLoader(pItem->m_strPath));
        if (NULL != pLoader.get())
          pLoader->Load(pItem->m_strPath, tag);
      }

      // if we have the itemcount, notify our
      // observer with the progress we made
      if (m_pObserver && m_itemCount>0)
        m_pObserver->OnSetProgress(m_currentItem, m_itemCount);

      if (tag.Loaded())
      {
        CSong song(tag);
        song.iStartOffset = pItem->m_lStartOffset;
        song.iEndOffset = pItem->m_lEndOffset;
        if (dbSong)
        { // keep the db-only fields intact on rescan...
          song.iTimesPlayed = dbSong->iTimesPlayed;
          song.lastPlayed = dbSong->lastPlayed;
          if (song.rating == '0') song.rating = dbSong->rating;
        }
        pItem->SetMusicThumb();
        song.strThumb = pItem->GetThumbnailImage();
        songsToAdd.push_back(song);
//        CLog::Log(LOGDEBUG, "%s - Tag loaded for: %s", __FUNCTION__, spItem->m_strPath.c_str());
      }
      else
        CLog::Log(LOGDEBUG, "%s - No tag found for: %s", __FUNCTION__, pItem->m_strPath.c_str());
    }
  }

  CheckForVariousArtists(songsToAdd);
  if (!items.HasThumbnail())
    UpdateFolderThumb(songsToAdd, items.m_strPath);

  // finally, add these to the database
  for (unsigned int i = 0; i < songsToAdd.size(); ++i)
  {
    if (m_bStop) return i;
    CSong &song = songsToAdd[i];
    m_musicDatabase.AddSong(song, false);
    if (!m_bStop && g_guiSettings.GetBool("musiclibrary.autoartistinfo"))
    {
      long iArtist = m_musicDatabase.GetArtistByName(song.strArtist);
      CStdString strPath;
      strPath.Format("musicdb://2/%u/",iArtist);
      if (find(m_artistsScanned.begin(),m_artistsScanned.end(),iArtist) == m_artistsScanned.end())
        if (DownloadArtistInfo(strPath,song.strArtist))
          m_artistsScanned.push_back(iArtist);

      if (m_pObserver)
        m_pObserver->OnStateChanged(READING_MUSIC_INFO);
    }
    if (!m_bStop && g_guiSettings.GetBool("musiclibrary.autoalbuminfo"))
    {
      long iAlbum = m_musicDatabase.GetAlbumByName(song.strAlbum,song.strArtist);
      CStdString strPath;
      strPath.Format("musicdb://3/%u/",iAlbum);
      
      CMusicAlbumInfo albumInfo;
      bool bCanceled;
      if (find(m_albumsScanned.begin(),m_albumsScanned.end(),iAlbum) == m_albumsScanned.end())
        if (DownloadAlbumInfo(strPath,song.strArtist,song.strAlbum,bCanceled,albumInfo))
          m_albumsScanned.push_back(iAlbum);

      if (m_pObserver)
        m_pObserver->OnStateChanged(READING_MUSIC_INFO);
    }
  }
//.........这里部分代码省略.........

JSONRPC_STATUS CAudioLibrary::GetSongs(const std::string &method, ITransportLayer *transport, IClient *client, const CVariant &parameterObject, CVariant &result)
{
  CMusicDatabase musicdatabase;
  if (!musicdatabase.Open())
    return InternalError;

  CMusicDbUrl musicUrl;
  if (!musicUrl.FromString("musicdb://songs/"))
    return InternalError;

  if (parameterObject["singlesonly"].asBoolean())
    musicUrl.AddOption("singles", true);
  else if (!parameterObject["includesingles"].asBoolean())
    musicUrl.AddOption("singles", false);

  bool allroles = false;
  if (parameterObject["allroles"].isBoolean())
    allroles = parameterObject["allroles"].asBoolean();

  const CVariant &filter = parameterObject["filter"];

  if (allroles)
    musicUrl.AddOption("roleid", -1000); //All roles, override implicit roleid=1 filter required for backward compatibility
  else if (filter.isMember("roleid"))
    musicUrl.AddOption("roleid", static_cast<int>(filter["roleid"].asInteger()));
  else if (filter.isMember("role"))
    musicUrl.AddOption("role", filter["role"].asString());
  // Only one of genreid/genre, artistid/artist, albumid/album or rules type filter is allowed by filter syntax
  if (filter.isMember("artistid"))
    musicUrl.AddOption("artistid", static_cast<int>(filter["artistid"].asInteger()));
  else if (filter.isMember("artist"))
    musicUrl.AddOption("artist", filter["artist"].asString());
  else if (filter.isMember("genreid"))
    musicUrl.AddOption("genreid", static_cast<int>(filter["genreid"].asInteger()));
  else if (filter.isMember("genre"))
    musicUrl.AddOption("genre", filter["genre"].asString());
  else if (filter.isMember("albumid"))
    musicUrl.AddOption("albumid", static_cast<int>(filter["albumid"].asInteger()));
  else if (filter.isMember("album"))
    musicUrl.AddOption("album", filter["album"].asString());
  else if (filter.isObject())
  {
    std::string xsp;
    if (!GetXspFiltering("songs", filter, xsp))
      return InvalidParams;

    musicUrl.AddOption("xsp", xsp);
  }

  SortDescription sorting;
  ParseLimits(parameterObject, sorting.limitStart, sorting.limitEnd);
  if (!ParseSorting(parameterObject, sorting.sortBy, sorting.sortOrder, sorting.sortAttributes))
    return InvalidParams;

  int total;
  std::set<std::string> fields;
  if (parameterObject.isMember("properties") && parameterObject["properties"].isArray())
  {
    for (CVariant::const_iterator_array field = parameterObject["properties"].begin_array();
      field != parameterObject["properties"].end_array(); field++)
      fields.insert(field->asString());
  }

  if (!musicdatabase.GetSongsByWhereJSON(fields, musicUrl.ToString(), result, total, sorting))
    return InternalError;

  if (!result.isNull())
  {
    bool bFetchArt = fields.find("art") != fields.end();
    bool bFetchFanart = fields.find("fanart") != fields.end();
    bool bFetchThumb = fields.find("thumbnail") != fields.end();
    if (bFetchArt || bFetchFanart || bFetchThumb)
    {
      CThumbLoader* thumbLoader = new CMusicThumbLoader();
      thumbLoader->OnLoaderStart();

      std::set<std::string> artfields;
      if (bFetchArt)
        artfields.insert("art");
      if (bFetchFanart)
        artfields.insert("fanart");
      if (bFetchThumb)
        artfields.insert("thumbnail");

      for (unsigned int index = 0; index < result["songs"].size(); index++)
      {
        CFileItem item;
        // Only needs song and album id (if we have it) set to get art
        // Getting art is quicker if "albumid" has been fetched
        item.GetMusicInfoTag()->SetDatabaseId(result["songs"][index]["songid"].asInteger(), MediaTypeSong);
        if (result["songs"][index].isMember("albumid"))
          item.GetMusicInfoTag()->SetAlbumId(result["songs"][index]["albumid"].asInteger());
        else
          item.GetMusicInfoTag()->SetAlbumId(-1);

        // Could use FillDetails, but it does unnecessary serialization of empty MusiInfoTag
        // CFileItemPtr itemptr(new CFileItem(item));
        // FillDetails(item.GetMusicInfoTag(), itemptr, artfields, result["songs"][index], thumbLoader);

        thumbLoader->FillLibraryArt(item);
//.........这里部分代码省略.........

CSong::CSong(CFileItem& item)
{
  CMusicInfoTag& tag = *item.GetMusicInfoTag();
  SYSTEMTIME stTime;
  tag.GetReleaseDate(stTime);
  strTitle = tag.GetTitle();
  genre = tag.GetGenre();
  std::vector<std::string> artist = tag.GetArtist();
  std::vector<std::string> musicBrainArtistHints = tag.GetMusicBrainzArtistHints();
  strArtistDesc = tag.GetArtistString();
  if (!tag.GetMusicBrainzArtistID().empty())
  { // have musicbrainz artist info, so use it
    for (size_t i = 0; i < tag.GetMusicBrainzArtistID().size(); i++)
    {
      std::string artistId = tag.GetMusicBrainzArtistID()[i];
      std::string artistName;
      /*
       We try and get the corresponding artist name from the hints list.
       If the hints list is missing or the wrong length, it will try the artist list.
       We match on the same index, and if that fails just use the first name we have.
       */
      if (i < musicBrainArtistHints.size())
        artistName = musicBrainArtistHints[i];
      else if (!artist.empty())
        artistName = (i < artist.size()) ? artist[i] : artist[0];
      if (artistName.empty())
        artistName = artistId;
      std::string strJoinPhrase = (i == tag.GetMusicBrainzArtistID().size()-1) ? "" : g_advancedSettings.m_musicItemSeparator;
      CArtistCredit artistCredit(artistName, artistId, strJoinPhrase);
      artistCredits.push_back(artistCredit);
    }
  }
  else
  { // no musicbrainz info, so fill in directly
    for (std::vector<std::string>::const_iterator it = tag.GetArtist().begin(); it != tag.GetArtist().end(); ++it)
    {
      std::string strJoinPhrase = (it == --tag.GetArtist().end() ? "" : g_advancedSettings.m_musicItemSeparator);
      CArtistCredit artistCredit(*it, "", strJoinPhrase);
      artistCredits.push_back(artistCredit);
    }
  }
  strAlbum = tag.GetAlbum();
  m_albumArtist = tag.GetAlbumArtist();
  strMusicBrainzTrackID = tag.GetMusicBrainzTrackID();
  strComment = tag.GetComment();
  strCueSheet = tag.GetCueSheet();
  strMood = tag.GetMood();
  rating = tag.GetRating();
  userrating = tag.GetUserrating();
  votes = tag.GetVotes();
  iYear = stTime.wYear;
  iTrack = tag.GetTrackAndDiscNumber();
  iDuration = tag.GetDuration();
  bCompilation = tag.GetCompilation();
  embeddedArt = tag.GetCoverArtInfo();
  strFileName = tag.GetURL().empty() ? item.GetPath() : tag.GetURL();
  dateAdded = tag.GetDateAdded();
  strThumb = item.GetUserMusicThumb(true);
  iStartOffset = item.m_lStartOffset;
  iEndOffset = item.m_lEndOffset;
  idSong = -1;
  iTimesPlayed = 0;
  idAlbum = -1;
}

CAlbum::CAlbum(const CFileItem& item)
{
  Reset();
  const CMusicInfoTag& tag = *item.GetMusicInfoTag();
  SYSTEMTIME stTime;
  tag.GetReleaseDate(stTime);
  strAlbum = tag.GetAlbum();
  strMusicBrainzAlbumID = tag.GetMusicBrainzAlbumID();
  genre = tag.GetGenre();
  std::vector<std::string> musicBrainAlbumArtistHints = tag.GetMusicBrainzAlbumArtistHints();
  strArtistDesc = tag.GetAlbumArtistString();

  if (!tag.GetMusicBrainzAlbumArtistID().empty())
  { // have musicbrainz artist info, so use it
    for (size_t i = 0; i < tag.GetMusicBrainzAlbumArtistID().size(); i++)
    {
      std::string artistId = tag.GetMusicBrainzAlbumArtistID()[i];
      std::string artistName;

      /*
         We try and get the mbrainzid <-> name matching from the hints and match on the same index.
         If not found, we try and use the mbrainz <-> name matching from the artists fields
         If still not found, try and use the same index of the albumartist field.
         If still not found, use the mbrainzid and hope we later on can update that entry
         */

      if (i < musicBrainAlbumArtistHints.size())
        artistName = musicBrainAlbumArtistHints[i];
      else if (!tag.GetMusicBrainzArtistID().empty() && !tag.GetArtist().empty())
      {
        for (size_t j = 0; j < tag.GetMusicBrainzArtistID().size(); j++)
        {
          if (artistId == tag.GetMusicBrainzArtistID()[j])
          {
            if (j < tag.GetMusicBrainzArtistHints().size())
              artistName = tag.GetMusicBrainzArtistHints()[j];
            else
              artistName = (j < tag.GetArtist().size()) ? tag.GetArtist()[j] : tag.GetArtist()[0];
          }
        }
      }

      if (artistName.empty() && tag.GetMusicBrainzAlbumArtistID().size() == tag.GetAlbumArtist().size())
        artistName = tag.GetAlbumArtist()[i];

      if (artistName.empty())
        artistName = artistId;

      std::string strJoinPhrase = (i == tag.GetMusicBrainzAlbumArtistID().size()-1) ? "" : g_advancedSettings.m_musicItemSeparator;
      CArtistCredit artistCredit(artistName, tag.GetMusicBrainzAlbumArtistID()[i], strJoinPhrase);
      artistCredits.push_back(artistCredit);
    }
  }
  else
  { // no musicbrainz info, so fill in directly
    for (std::vector<std::string>::const_iterator it = tag.GetAlbumArtist().begin(); it != tag.GetAlbumArtist().end(); ++it)
    {
      std::string strJoinPhrase = (it == --tag.GetAlbumArtist().end() ? "" : g_advancedSettings.m_musicItemSeparator);
      CArtistCredit artistCredit(*it, "", strJoinPhrase);
      artistCredits.push_back(artistCredit);
    }
  }
  iYear = stTime.wYear;
  bCompilation = tag.GetCompilation();
  iTimesPlayed = 0;
  dateAdded.Reset();
  lastPlayed.Reset();
  releaseType = tag.GetAlbumReleaseType();
}

CSong::CSong(CFileItem& item)
{
  CMusicInfoTag& tag = *item.GetMusicInfoTag();
  SYSTEMTIME stTime;
  tag.GetReleaseDate(stTime);
  strTitle = tag.GetTitle();
  genre = tag.GetGenre();
  std::vector<std::string> artist = tag.GetArtist();
  std::vector<std::string> musicBrainzArtistHints = tag.GetMusicBrainzArtistHints();
  strArtistDesc = tag.GetArtistString();

  if (!tag.GetMusicBrainzArtistID().empty())
  { // Have musicbrainz artist info, so use it

    // Vector of possible separators in the order least likely to be part of artist name
    const std::vector<std::string> separators{ " feat. ", " ft. ", " Feat. "," Ft. ", ";", ":", "|", "#", "/", " with ", ",", "&" };

    // Establish tag consistency - do the number of musicbrainz ids and number of names in hints or artist match
    if (tag.GetMusicBrainzArtistID().size() != musicBrainzArtistHints.size() &&
        tag.GetMusicBrainzArtistID().size() != artist.size())
    {
      // Tags mis-match - report it and then try to fix
      CLog::Log(LOGDEBUG, "Mis-match in song file tags: %i mbid %i names %s %s", 
        (int)tag.GetMusicBrainzArtistID().size(), (int)artist.size(), strTitle.c_str(), strArtistDesc.c_str());
      /*
        Most likey we have no hints and a single artist name like "Artist1 feat. Artist2"
        or "Composer; Conductor, Orchestra, Soloist" or "Artist1/Artist2" where the
        expected single item separator (default = space-slash-space) as not been used.
        Ampersand (&), comma and slash (no spaces) are poor delimiters as could be in name
        e.g. "AC/DC", "Earth, Wind & Fire", but here treat them as such in attempt to find artist names.
        When there are hints but count not match mbid they could be poorly formatted using unexpected
        separators so attempt to split them. Or we could have more hints or artist names than
        musicbrainz id so ingore them but raise warning.
      */
      // Do hints exist yet mis-match
      if (musicBrainzArtistHints.size() > 0 &&
        musicBrainzArtistHints.size() != tag.GetMusicBrainzArtistID().size())
      {
        if (artist.size() == tag.GetMusicBrainzArtistID().size())
          // Artist name count matches, use that as hints
          musicBrainzArtistHints = artist;
        else if (musicBrainzArtistHints.size() < tag.GetMusicBrainzArtistID().size())
        { // Try splitting the hints until have matching number
          musicBrainzArtistHints = StringUtils::SplitMulti(musicBrainzArtistHints, separators, tag.GetMusicBrainzArtistID().size());
        }
        else
          // Extra hints, discard them.
          musicBrainzArtistHints.resize(tag.GetMusicBrainzArtistID().size());
      }
      // Do hints not exist or still mis-match, try artists
      if (musicBrainzArtistHints.size() != tag.GetMusicBrainzArtistID().size())
        musicBrainzArtistHints = artist;
      // Still mis-match, try splitting the hints (now artists) until have matching number
      if (musicBrainzArtistHints.size() < tag.GetMusicBrainzArtistID().size())
      {
        musicBrainzArtistHints = StringUtils::SplitMulti(musicBrainzArtistHints, separators, tag.GetMusicBrainzArtistID().size());
      }
    }
    else
    { // Either hints or artist names (or both) matches number of musicbrainz id
      // If hints mis-match, use artists
      if (musicBrainzArtistHints.size() != tag.GetMusicBrainzArtistID().size())
        musicBrainzArtistHints = tag.GetArtist();
    }

    for (size_t i = 0; i < tag.GetMusicBrainzArtistID().size(); i++)
    {
      std::string artistId = tag.GetMusicBrainzArtistID()[i];
      std::string artistName;
      /*
       We try and get the corresponding artist name from the hints list.
       Having already attempted to make the number of hints match, if they
       still don't then use musicbrainz id as the name and hope later on we
       can update that entry.
      */
      if (i < musicBrainzArtistHints.size())
        artistName = musicBrainzArtistHints[i];
      else
        artistName = artistId;
      artistCredits.emplace_back(StringUtils::Trim(artistName), artistId);
    }
  }
  else
  { // No musicbrainz artist ids, so fill in directly
    // Separate artist names further, if possible, and trim blank space.
    if (musicBrainzArtistHints.size() > tag.GetArtist().size())
      // Make use of hints (ARTISTS tag), when present, to separate artist names
      artist = musicBrainzArtistHints;
    else
      // Split artist names further using multiple possible delimiters, over single separator applied in Tag loader
      artist = StringUtils::SplitMulti(artist, g_advancedSettings.m_musicArtistSeparators);

    for (auto artistname: artist)
    {
      artistCredits.emplace_back(StringUtils::Trim(artistname));
    }
  }
  strAlbum = tag.GetAlbum();
  m_albumArtist = tag.GetAlbumArtist();
  // Separate album artist names further, if possible, and trim blank space.
//.........这里部分代码省略.........

//.........这里部分代码省略.........
            infoLabels->push_back(g_infoManager.GetLabel(g_infoManager.TranslateString(pMsg->params[i])));
        }
      }
      break;
    case TMSG_GUI_INFOBOOL:
      {
        if (pMsg->lpVoid)
        {
          vector<bool> *infoLabels = (vector<bool> *)pMsg->lpVoid;
          for (unsigned int i = 0; i < pMsg->params.size(); i++)
            infoLabels->push_back(g_infoManager.EvaluateBool(pMsg->params[i]));
        }
      }
      break;

    case TMSG_CALLBACK:
      {
        ThreadMessageCallback *callback = (ThreadMessageCallback*)pMsg->lpVoid;
        callback->callback(callback->userptr);
      }
      break;

    case TMSG_VOLUME_SHOW:
      {
        CAction action(pMsg->param1);
        g_application.ShowVolumeBar(&action);
      }
      break;
      
    case TMSG_DISPLAY_SETUP:
    {
      *((bool*)pMsg->lpVoid) = g_application.InitWindow();
      g_application.SetRenderGUI(true);
    }
    break;
    
    case TMSG_DISPLAY_DESTROY:
    {
      *((bool*)pMsg->lpVoid) = g_application.DestroyWindow();
      g_application.SetRenderGUI(false);
    }
    break;

    case TMSG_UPDATE_CURRENT_ITEM:
    {
      CFileItem* item = (CFileItem*)pMsg->lpVoid;
      if (!item)
        return;
      if (pMsg->param1 == 1 && item->HasMusicInfoTag()) // only grab music tag
        g_infoManager.SetCurrentSongTag(*item->GetMusicInfoTag());
      else if (pMsg->param1 == 2 && item->HasVideoInfoTag()) // only grab video tag
        g_infoManager.SetCurrentVideoTag(*item->GetVideoInfoTag());
      else
        g_infoManager.SetCurrentItem(*item);
      delete item;
      break;
    }

    case TMSG_LOADPROFILE:
    {
      CGUIWindowLoginScreen::LoadProfile(pMsg->param1);
      break;
    }
    case TMSG_CECTOGGLESTATE:
    {
      *((bool*)pMsg->lpVoid) = g_peripherals.ToggleDeviceState(STATE_SWITCH_TOGGLE);
      break;
    }
    case TMSG_CECACTIVATESOURCE:
    {
      g_peripherals.ToggleDeviceState(STATE_ACTIVATE_SOURCE);
      break;
    }
    case TMSG_CECSTANDBY:
    {
      g_peripherals.ToggleDeviceState(STATE_STANDBY);
      break;
    }
    case TMSG_START_ANDROID_ACTIVITY:
    {
#if defined(TARGET_ANDROID)
      if (pMsg->params.size())
      {
        CXBMCApp::StartActivity(pMsg->params[0],
                                pMsg->params.size() > 1 ? pMsg->params[1] : "",
                                pMsg->params.size() > 2 ? pMsg->params[2] : "",
                                pMsg->params.size() > 3 ? pMsg->params[3] : "");
      }
#endif
      break;
    }
    case TMSG_SETPVRMANAGERSTATE:
    {
      if (pMsg->param1 != 0)
        g_application.StartPVRManager();
      else
        g_application.StopPVRManager();
    }
  }
}

bool CPVRManager::UpdateItem(CFileItem& item)
{
  /* Don't update if a recording is played */
  if (item.IsPVRRecording())
    return false;

  if (!item.IsPVRChannel())
  {
    CLog::Log(LOGERROR, "CPVRManager - %s - no channel tag provided", __FUNCTION__);
    return false;
  }

  CSingleLock lock(m_critSection);
  if (!m_currentFile || *m_currentFile->GetPVRChannelInfoTag() == *item.GetPVRChannelInfoTag())
    return false;

  g_application.SetCurrentFileItem(*m_currentFile);
  CFileItemPtr itemptr(new CFileItem(*m_currentFile));
  g_infoManager.SetCurrentItem(itemptr);

  CPVRChannelPtr channelTag(item.GetPVRChannelInfoTag());
  CEpgInfoTagPtr epgTagNow(channelTag->GetEPGNow());

  if (channelTag->IsRadio())
  {
    CMusicInfoTag* musictag = item.GetMusicInfoTag();
    if (musictag)
    {
      musictag->SetTitle(epgTagNow ?
          epgTagNow->Title() :
          CSettings::GetInstance().GetBool(CSettings::SETTING_EPG_HIDENOINFOAVAILABLE) ?
              "" :
              g_localizeStrings.Get(19055)); // no information available
      if (epgTagNow)
        musictag->SetGenre(epgTagNow->Genre());
      musictag->SetDuration(epgTagNow ? epgTagNow->GetDuration() : 3600);
      musictag->SetURL(channelTag->Path());
      musictag->SetArtist(channelTag->ChannelName());
      musictag->SetAlbumArtist(channelTag->ChannelName());
      musictag->SetLoaded(true);
      musictag->SetComment("");
      musictag->SetLyrics("");
    }
  }
  else
  {
    CVideoInfoTag *videotag = item.GetVideoInfoTag();
    if (videotag)
    {
      videotag->m_strTitle = epgTagNow ?
          epgTagNow->Title() :
          CSettings::GetInstance().GetBool(CSettings::SETTING_EPG_HIDENOINFOAVAILABLE) ?
              "" :
              g_localizeStrings.Get(19055); // no information available
      if (epgTagNow)
        videotag->m_genre = epgTagNow->Genre();
      videotag->m_strPath = channelTag->Path();
      videotag->m_strFileNameAndPath = channelTag->Path();
      videotag->m_strPlot = epgTagNow ? epgTagNow->Plot() : "";
      videotag->m_strPlotOutline = epgTagNow ? epgTagNow->PlotOutline() : "";
      videotag->m_iEpisode = epgTagNow ? epgTagNow->EpisodeNumber() : 0;
    }
  }

  return false;
}

bool CMusicThumbLoader::FillLibraryArt(CFileItem &item)
{
  /* Called for any item with MusicInfoTag and no art. 
     Items on Genres, Sources and Roles nodes have ID (although items on Years
     node do not) so check for song/album/artist specifically.
     Non-library songs (file view) can also have MusicInfoTag but no ID or type
  */
  bool artfound(false);
  std::vector<ArtForThumbLoader> art;
  CMusicInfoTag &tag = *item.GetMusicInfoTag();
  if (tag.GetDatabaseId() > -1 && (tag.GetType() == MediaTypeSong || 
      tag.GetType() == MediaTypeAlbum || 
      tag.GetType() == MediaTypeArtist))
  {
    // Item in music library, fetch the art
    m_musicDatabase->Open();
    if (tag.GetType() == MediaTypeSong)
      artfound = m_musicDatabase->GetArtForItem(tag.GetDatabaseId(), tag.GetAlbumId(), -1, false, art);
    else if (tag.GetType() == MediaTypeAlbum)
      artfound = m_musicDatabase->GetArtForItem(-1, tag.GetDatabaseId(), -1, false, art);
    else //Artist
      artfound = m_musicDatabase->GetArtForItem(-1, -1, tag.GetDatabaseId(), true, art);

    m_musicDatabase->Close();
  }
  else if (!tag.GetArtist().empty() && 
    (tag.GetType() == MediaTypeNone || tag.GetType() == MediaTypeSong))
  {
    /* 
    Could be non-library song - has musictag but no ID or type (may have
    thumb already). Try to fetch both song artist(s) and album artist(s) art by
    artist name, e.g. "artist.thumb", "artist.fanart", "artist.clearlogo",
    "artist.banner", "artist1.thumb", "artist1.fanart", "artist1.clearlogo",
    "artist1.banner", "albumartist.thumb", "albumartist.fanart" etc. 
    Set fanart as fallback.
    */
    CSong song;
    // Try to split song artist names (various tags) into artist credits
    song.SetArtistCredits(tag.GetArtist(), tag.GetMusicBrainzArtistHints(), tag.GetMusicBrainzArtistID());
    if (!song.artistCredits.empty())
    {
      tag.SetType(MediaTypeSong);  // Makes "Information" context menu visible
      m_musicDatabase->Open();
      int iOrder = 0;
      // Song artist art
      for (const auto& artistCredit : song.artistCredits)
      {
        int idArtist = m_musicDatabase->GetArtistByName(artistCredit.GetArtist());
        if (idArtist > 0)
        {
          std::vector<ArtForThumbLoader> artistart;
          if (m_musicDatabase->GetArtForItem(-1, -1, idArtist, true, artistart))
          {
            for (auto& artitem : artistart)
            {
              if (iOrder > 0)
                artitem.prefix = StringUtils::Format("artist%i", iOrder);
              else
                artitem.prefix = "artist";
            }
            art.insert(art.end(), artistart.begin(), artistart.end());
          }
        }
        ++iOrder;
      }
      // Album artist art
      if (!tag.GetAlbumArtist().empty() && tag.GetArtistString().compare(tag.GetAlbumArtistString()) != 0)
      {
        // Split song artist names correctly into artist credits from various tag
        // arrays, inc. fallback to song artist names
        CAlbum album;
        album.SetArtistCredits(tag.GetAlbumArtist(), tag.GetMusicBrainzAlbumArtistHints(), tag.GetMusicBrainzAlbumArtistID(),
          tag.GetArtist(), tag.GetMusicBrainzArtistHints(), tag.GetMusicBrainzArtistID());

        iOrder = 0;
        for (const auto& artistCredit : album.artistCredits)
        {
          int idArtist = m_musicDatabase->GetArtistByName(artistCredit.GetArtist());
          if (idArtist > 0)
          {
            std::vector<ArtForThumbLoader> artistart;
            if (m_musicDatabase->GetArtForItem(-1, -1, idArtist, true, artistart))
            {
              for (auto& artitem : artistart)
              {
                if (iOrder > 0)
                  artitem.prefix = StringUtils::Format("albumartist%i", iOrder);
                else
                  artitem.prefix = "albumartist";
              }
              art.insert(art.end(), artistart.begin(), artistart.end());
            }
          }
          ++iOrder;
        }
      }
      else
      {
        // Replicate the artist art as album artist art
        std::vector<ArtForThumbLoader> artistart;
//.........这里部分代码省略.........

void CGUIWindowMusicBase::OnInfo(CFileItem *pItem, bool bShowInfo)
{
  if (pItem->m_bIsFolder && pItem->IsParentFolder()) 
    return;

  if (pItem->IsVideoDb())
  {
    OnContextButton(m_viewControl.GetSelectedItem(), CONTEXT_BUTTON_INFO); // nasty but it is the same item i promise :)
    return;
  }

  CStdString strPath = pItem->m_strPath;

  // Try to find an album to lookup from the current item
  CAlbum album;
  CArtist artist;
  bool foundAlbum = false;
  
  album.idAlbum = -1;
  
  if (pItem->IsMusicDb())
  {
    CQueryParams params;
    CDirectoryNode::GetDatabaseInfo(pItem->m_strPath, params);
    if (params.GetAlbumId() == -1)
    {
      artist.idArtist = params.GetArtistId();
      artist.strArtist = pItem->GetMusicInfoTag()->GetArtist();
    }
    else
    {
      // show dialog box indicating we're searching the album name
      if (m_dlgProgress && bShowInfo)
      {
        m_dlgProgress->SetHeading(185);
        m_dlgProgress->SetLine(0, 501);
        m_dlgProgress->SetLine(1, "");
        m_dlgProgress->SetLine(2, "");
        m_dlgProgress->StartModal();
        m_dlgProgress->Progress();
        if (m_dlgProgress->IsCanceled()) 
          return;
      }

      album.idAlbum = params.GetAlbumId();
      album.strAlbum = pItem->GetMusicInfoTag()->GetAlbum();
      album.strArtist = pItem->GetMusicInfoTag()->GetArtist();

      // we're going to need it's path as well (we assume that there's only one) - this is for
      // assigning thumbs to folders, and obtaining the local folder.jpg
      m_musicdatabase.GetAlbumPath(album.idAlbum, strPath);
    }
  }
  else
  { // lookup is done on a folder - find the albums in the folder
    CFileItemList items;
    GetDirectory(strPath, items);

    // check the first song we find in the folder, and grab it's album info
    for (int i = 0; i < items.Size() && !foundAlbum; i++)
    {
      CFileItem* pItem = items[i];
      pItem->LoadMusicTag();
      if (pItem->HasMusicInfoTag() && pItem->GetMusicInfoTag()->Loaded() && 
         !pItem->GetMusicInfoTag()->GetAlbum().IsEmpty())
      {
        // great, have a song - use it.
        CSong song(*pItem->GetMusicInfoTag());
        // this function won't be needed if/when the tag has idSong information
        if (!m_musicdatabase.GetAlbumFromSong(song, album))
        { // album isn't in the database - construct it from the tag info we have
          CMusicInfoTag *tag = pItem->GetMusicInfoTag();
          album.strAlbum = tag->GetAlbum();
          album.strArtist = tag->GetAlbumArtist().IsEmpty() ? tag->GetArtist() : tag->GetAlbumArtist();
          album.idAlbum = -1; // the -1 indicates it's not in the database
        }
        foundAlbum = true;
      }
    }
    if (!foundAlbum)
    {
      CLog::Log(LOGINFO, "%s called on a folder containing no songs with tag info - nothing can be done", __FUNCTION__);
      if (m_dlgProgress && bShowInfo) m_dlgProgress->Close();
    }
  }

  if (m_dlgProgress && bShowInfo) m_dlgProgress->Close();

  if (album.idAlbum == -1 && foundAlbum == false)
    ShowArtistInfo(artist, pItem->m_strPath, false, bShowInfo);
  else
    ShowAlbumInfo(album, strPath, false, bShowInfo);
}

void CGUIWindowMusicBase::UpdateThumb(const CAlbum &album, const CStdString &path)
{
  // check user permissions
  bool saveDb = album.idAlbum != -1;
  bool saveDirThumb = true;
  if (!g_settings.m_vecProfiles[g_settings.m_iLastLoadedProfileIndex].canWriteDatabases() && !g_passwordManager.bMasterUser)
  {
    saveDb = false;
    saveDirThumb = false;
  }

  CStdString albumThumb(CUtil::GetCachedAlbumThumb(album.strAlbum, album.strArtist));

  // Update the thumb in the music database (songs + albums)
  CStdString albumPath(path);
  if (saveDb && CFile::Exists(albumThumb))
    m_musicdatabase.SaveAlbumThumb(album.idAlbum, albumThumb);

  // Update currently playing song if it's from the same album.  This is necessary as when the album
  // first gets it's cover, the info manager's item doesn't have the updated information (so will be
  // sending a blank thumb to the skin.)
  if (g_application.IsPlayingAudio())
  {
    CStdString strSongFolder;
    const CMusicInfoTag* tag=g_infoManager.GetCurrentSongTag();
    if (tag)
    {
      // really, this may not be enough as it is to reliably update this item.  eg think of various artists albums
      // that aren't tagged as such (and aren't yet scanned).  But we probably can't do anything better than this
      // in that case
      if (album.strAlbum == tag->GetAlbum() && (album.strArtist == tag->GetAlbumArtist() || 
                                                album.strArtist == tag->GetArtist()))
      {
        g_infoManager.SetCurrentAlbumThumb(albumThumb);
      }
    }
  }

  // Save this thumb as the directory thumb if it's the only album in the folder (files view nicety)
  // We do this by grabbing all the songs in the folder, and checking to see whether they come
  // from the same album.
  if (saveDirThumb && CFile::Exists(albumThumb) && !albumPath.IsEmpty() && !CUtil::IsCDDA(albumPath))
  {
    CFileItemList items;
    GetDirectory(albumPath, items);
    OnRetrieveMusicInfo(items);
    VECSONGS songs;
    for (int i = 0; i < items.Size(); i++)
    {
      CFileItem *item = items[i];
      if (item->HasMusicInfoTag() && item->GetMusicInfoTag()->Loaded())
      {
        CSong song(*item->GetMusicInfoTag());
        songs.push_back(song);
      }
    }
    CMusicInfoScanner::CheckForVariousArtists(songs);
    CStdString album, artist;
    if (CMusicInfoScanner::HasSingleAlbum(songs, album, artist))
    { // can cache as the folder thumb
      CStdString folderThumb(CUtil::GetCachedMusicThumb(albumPath));
      ::CopyFile(albumThumb, folderThumb, false);
    }
  }

  // update the file listing
  int iSelectedItem = m_viewControl.GetSelectedItem();
  if (iSelectedItem >= 0 && m_vecItems->Get(iSelectedItem))
  {
    CFileItem* pSelectedItem=m_vecItems->Get(iSelectedItem);
    if (pSelectedItem->m_bIsFolder)
    {
      // refresh only the icon of
      // the current folder
      pSelectedItem->FreeMemory();
      if (!pSelectedItem->HasThumbnail())
        pSelectedItem->SetThumbnailImage(albumThumb);
      pSelectedItem->FillInDefaultIcon();
    }
    else
    {
      // Refresh all items
      m_vecItems->RemoveDiscCache();
      Update(m_vecItems->m_strPath);
    }

    //  Do we have to autoswitch to the thumb control?
    m_guiState.reset(CGUIViewState::GetViewState(GetID(), *m_vecItems));
    UpdateButtons();
  }
}

bool PAPlayer::QueueNextFileEx(const CFileItem &file, bool fadeIn/* = true */, bool job /* = false */)
{
  // check if we advance a track of a CUE sheet
  // if this is the case we don't need to open a new stream
  std::string newURL = file.GetMusicInfoTag() ? file.GetMusicInfoTag()->GetURL() : file.GetPath();
  std::string oldURL = m_FileItem->GetMusicInfoTag() ? m_FileItem->GetMusicInfoTag()->GetURL() : m_FileItem->GetPath();
  if (newURL.compare(oldURL) == 0 &&
      file.m_lStartOffset &&
      file.m_lStartOffset == m_FileItem->m_lEndOffset &&
      m_currentStream && m_currentStream->m_prepareTriggered)
  {
    m_continueStream = true;
    m_upcomingCrossfadeMS = 0;
    *m_FileItem = file;
    return true;
  }
  else
  {
    m_continueStream = false;
  }

  StreamInfo *si = new StreamInfo();
  if (!si->m_decoder.Create(file, (file.m_lStartOffset * 1000) / 75))
  {
    CLog::Log(LOGWARNING, "PAPlayer::QueueNextFileEx - Failed to create the decoder");

    delete si;
    // advance playlist
    if (job)
      m_callback.OnPlayBackStarted();
    m_callback.OnQueueNextItem();
    return false;
  }

  /* decode until there is data-available */
  si->m_decoder.Start();
  while(si->m_decoder.GetDataSize() == 0)
  {
    int status = si->m_decoder.GetStatus();
    if (status == STATUS_ENDED   ||
        status == STATUS_NO_FILE ||
        si->m_decoder.ReadSamples(PACKET_SIZE) == RET_ERROR)
    {
      CLog::Log(LOGINFO, "PAPlayer::QueueNextFileEx - Error reading samples");

      si->m_decoder.Destroy();
      delete si;
      // advance playlist
      if (job)
        m_callback.OnPlayBackStarted();
      m_callback.OnQueueNextItem();
      return false;
    }

    /* yield our time so that the main PAP thread doesnt stall */
    CThread::Sleep(1);
  }

  // set m_upcomingCrossfadeMS depending on type of file and user settings
  UpdateCrossfadeTime(file);

  /* init the streaminfo struct */
  si->m_decoder.GetDataFormat(&si->m_channelInfo, &si->m_sampleRate, &si->m_encodedSampleRate, &si->m_dataFormat);
  si->m_startOffset        = file.m_lStartOffset * 1000 / 75;
  si->m_endOffset          = file.m_lEndOffset   * 1000 / 75;
  si->m_bytesPerSample     = CAEUtil::DataFormatToBits(si->m_dataFormat) >> 3;
  si->m_bytesPerFrame      = si->m_bytesPerSample * si->m_channelInfo.Count();
  si->m_started            = false;
  si->m_finishing          = false;
  si->m_framesSent         = 0;
  si->m_seekNextAtFrame    = 0;
  si->m_seekFrame          = -1;
  si->m_stream             = NULL;
  si->m_volume             = (fadeIn && m_upcomingCrossfadeMS) ? 0.0f : 1.0f;
  si->m_fadeOutTriggered   = false;
  si->m_isSlaved           = false;

  int64_t streamTotalTime = si->m_decoder.TotalTime();
  if (si->m_endOffset)
    streamTotalTime = si->m_endOffset - si->m_startOffset;
  
  si->m_prepareNextAtFrame = 0;
  // cd drives don't really like it to be crossfaded or prepared
  if(!file.IsCDDA())
  {
    if (streamTotalTime >= TIME_TO_CACHE_NEXT_FILE + m_defaultCrossfadeMS)
      si->m_prepareNextAtFrame = (int)((streamTotalTime - TIME_TO_CACHE_NEXT_FILE - m_defaultCrossfadeMS) * si->m_sampleRate / 1000.0f);
  }

  if (m_currentStream && (AE_IS_RAW(m_currentStream->m_dataFormat) || AE_IS_RAW(si->m_dataFormat)))
  {
    m_currentStream->m_prepareTriggered = false;
    m_currentStream->m_waitOnDrain = true;
    m_currentStream->m_prepareNextAtFrame = 0;
    si->m_decoder.Destroy();
    delete si;
    return false;
  }

  si->m_prepareTriggered = false;
//.........这里部分代码省略.........

bool CPVRManager::UpdateItem(CFileItem& item)
{
  /* Don't update if a recording is played */
  if (item.IsPVRRecording())
    return false;

  if (!item.IsPVRChannel())
  {
    CLog::Log(LOGERROR, "CPVRManager - %s - no channel tag provided", __FUNCTION__);
    return false;
  }

  CSingleLock lock(m_critSection);
  if (!m_currentFile || *m_currentFile->GetPVRChannelInfoTag() == *item.GetPVRChannelInfoTag())
    return false;

  g_application.CurrentFileItem() = *m_currentFile;
  g_infoManager.SetCurrentItem(*m_currentFile);

  CPVRChannel* channelTag = item.GetPVRChannelInfoTag();
  CEpgInfoTag epgTagNow;
  bool bHasTagNow = channelTag->GetEPGNow(epgTagNow);

  if (channelTag->IsRadio())
  {
    CMusicInfoTag* musictag = item.GetMusicInfoTag();
    if (musictag)
    {
      musictag->SetTitle(bHasTagNow ?
          epgTagNow.Title() :
          g_guiSettings.GetBool("epg.hidenoinfoavailable") ?
              StringUtils::EmptyString :
              g_localizeStrings.Get(19055)); // no information available
      if (bHasTagNow)
        musictag->SetGenre(epgTagNow.Genre());
      musictag->SetDuration(bHasTagNow ? epgTagNow.GetDuration() : 3600);
      musictag->SetURL(channelTag->Path());
      musictag->SetArtist(channelTag->ChannelName());
      musictag->SetAlbumArtist(channelTag->ChannelName());
      musictag->SetLoaded(true);
      musictag->SetComment(StringUtils::EmptyString);
      musictag->SetLyrics(StringUtils::EmptyString);
    }
  }
  else
  {
    CVideoInfoTag *videotag = item.GetVideoInfoTag();
    if (videotag)
    {
      videotag->m_strTitle = bHasTagNow ?
          epgTagNow.Title() :
          g_guiSettings.GetBool("epg.hidenoinfoavailable") ?
              StringUtils::EmptyString :
              g_localizeStrings.Get(19055); // no information available
      if (bHasTagNow)
        videotag->m_genre = epgTagNow.Genre();
      videotag->m_strPath = channelTag->Path();
      videotag->m_strFileNameAndPath = channelTag->Path();
      videotag->m_strPlot = bHasTagNow ? epgTagNow.Plot() : StringUtils::EmptyString;
      videotag->m_strPlotOutline = bHasTagNow ? epgTagNow.PlotOutline() : StringUtils::EmptyString;
      videotag->m_iEpisode = bHasTagNow ? epgTagNow.EpisodeNum() : 0;
    }
  }

  return false;
}

void CGUIWindowMusicNav::GetContextButtons(int itemNumber, CContextButtons &buttons)
{
  CGUIWindowMusicBase::GetContextButtons(itemNumber, buttons);

  CGUIDialogMusicScan *musicScan = (CGUIDialogMusicScan *)m_gWindowManager.GetWindow(WINDOW_DIALOG_MUSIC_SCAN);
  CFileItem *item = (itemNumber >= 0 && itemNumber < m_vecItems->Size()) ? m_vecItems->Get(itemNumber) : NULL;
  if (item && (item->GetExtraInfo().Find("lastfm") < 0))
  {
    // are we in the playlists location?
    bool inPlaylists = m_vecItems->m_strPath.Equals(CUtil::MusicPlaylistsLocation()) ||
                       m_vecItems->m_strPath.Equals("special://musicplaylists/");

    CMusicDatabaseDirectory dir;
    SScraperInfo info;
    m_musicdatabase.GetScraperForPath(item->m_strPath,info);
    // enable music info button on an album or on a song.
    if (item->IsAudio() && !item->IsPlayList() && !item->IsSmartPlayList() &&
       !item->IsLastFM() && !item->IsShoutCast())
    {
      buttons.Add(CONTEXT_BUTTON_SONG_INFO, 658);
    }
    else if (item->IsVideoDb())
    {
      if (!item->m_bIsFolder) // music video
       buttons.Add(CONTEXT_BUTTON_INFO, 20393);
      if (item->m_strPath.Left(14).Equals("videodb://3/4/") &&
          item->m_strPath.size() > 14 && item->m_bIsFolder)
      {
        long idArtist = m_musicdatabase.GetArtistByName(m_vecItems->Get(itemNumber)->GetLabel());
        if (idArtist > - 1)
          buttons.Add(CONTEXT_BUTTON_INFO,21891);
      }
    }
    else if (!inPlaylists && (dir.HasAlbumInfo(item->m_strPath)||
                              dir.IsArtistDir(item->m_strPath)   )      &&
             !dir.IsAllItem(item->m_strPath) && !item->IsParentFolder() &&
             !item->IsLastFM() && !item->IsShoutCast()                  &&
             !item->m_strPath.Left(14).Equals("musicsearch://"))
    {
      if (dir.IsArtistDir(item->m_strPath))
        buttons.Add(CONTEXT_BUTTON_INFO, 21891);
      else
        buttons.Add(CONTEXT_BUTTON_INFO, 13351);
    }

    // enable query all albums button only in album view
    if (dir.HasAlbumInfo(item->m_strPath) && !dir.IsAllItem(item->m_strPath) &&
        item->m_bIsFolder && !item->IsVideoDb() && !item->IsParentFolder()   &&
       !item->IsLastFM() &&  !item->IsShoutCast()                            &&
       !item->m_strPath.Left(14).Equals("musicsearch://"))
    {
      buttons.Add(CONTEXT_BUTTON_INFO_ALL, 20059);
    }

    // enable query all artist button only in album view
    if (dir.IsArtistDir(item->m_strPath)        && !dir.IsAllItem(item->m_strPath) &&
        item->m_bIsFolder && !item->IsVideoDb() && !info.strContent.IsEmpty())
    {
      buttons.Add(CONTEXT_BUTTON_INFO_ALL, 21884);
    }

    // turn off set artist image if not at artist listing.
    if (dir.IsArtistDir(item->m_strPath) && !dir.IsAllItem(item->m_strPath) ||
       (item->m_strPath.Left(14).Equals("videodb://3/4/") &&
        item->m_strPath.size() > 14 && item->m_bIsFolder))
    {
      buttons.Add(CONTEXT_BUTTON_SET_ARTIST_THUMB, 13359);
    }

    if (m_vecItems->m_strPath.Equals("plugin://music/"))
      buttons.Add(CONTEXT_BUTTON_SET_PLUGIN_THUMB, 1044);

    //Set default or clear default
    NODE_TYPE nodetype = dir.GetDirectoryType(item->m_strPath);
    if (!item->IsParentFolder() && !inPlaylists &&
        (nodetype == NODE_TYPE_ROOT     ||
         nodetype == NODE_TYPE_OVERVIEW ||
         nodetype == NODE_TYPE_TOP100))
    {
      if (!item->m_strPath.Equals(g_settings.m_defaultMusicLibSource))
        buttons.Add(CONTEXT_BUTTON_SET_DEFAULT, 13335); // set default
      if (strcmp(g_settings.m_defaultMusicLibSource, ""))
        buttons.Add(CONTEXT_BUTTON_CLEAR_DEFAULT, 13403); // clear default
    }
    NODE_TYPE childtype = dir.GetDirectoryChildType(item->m_strPath);
    if (childtype == NODE_TYPE_ALBUM || childtype == NODE_TYPE_ARTIST ||
        nodetype == NODE_TYPE_GENRE  || nodetype == NODE_TYPE_ALBUM)
    {
      // we allow the user to set content for
      // 1. general artist and album nodes
      // 2. specific per genre
      // 3. specific per artist
      // 4. specific per album
      buttons.Add(CONTEXT_BUTTON_SET_CONTENT,20195);
    }
    if (item->HasMusicInfoTag() && item->GetMusicInfoTag()->GetArtist().size() > 0)
    {
      CVideoDatabase database;
      database.Open();
      if (database.GetMusicVideoArtistByName(item->GetMusicInfoTag()->GetArtist()) > -1)
//.........这里部分代码省略.........

CAlbum::CAlbum(const CFileItem& item)
{
  Reset();
  const CMusicInfoTag& tag = *item.GetMusicInfoTag();
  SYSTEMTIME stTime;
  tag.GetReleaseDate(stTime);
  strAlbum = tag.GetAlbum();
  strMusicBrainzAlbumID = tag.GetMusicBrainzAlbumID();
  genre = tag.GetGenre();
  std::vector<std::string> musicBrainzAlbumArtistHints = tag.GetMusicBrainzAlbumArtistHints();
  strArtistDesc = tag.GetAlbumArtistString();

  if (!tag.GetMusicBrainzAlbumArtistID().empty())
  { // Have musicbrainz artist info, so use it
    
    // Vector of possible separators in the order least likely to be part of artist name
    const std::vector<std::string> separators{ " feat. ", ";", ":", "|", "#", "/", ",", "&" };

    // Establish tag consistency
    // Do the number of musicbrainz ids and number of names in hints and artist mis-match?
    if (musicBrainzAlbumArtistHints.size() != tag.GetMusicBrainzAlbumArtistID().size() &&
      tag.GetAlbumArtist().size() != tag.GetMusicBrainzAlbumArtistID().size())
    {
      // Tags mis-match - report it and then try to fix
      CLog::Log(LOGDEBUG, "Mis-match in song file albumartist tags: %i mbid %i name album: %s %s",
        (int)tag.GetMusicBrainzAlbumArtistID().size(),
        (int)tag.GetAlbumArtist().size(),
        strAlbum.c_str(), strArtistDesc.c_str());
      /*
      Most likely we have no hints and a single artist name like "Artist1 feat. Artist2"
      or "Composer; Conductor, Orchestra, Soloist" or "Artist1/Artist2" where the
      expected single item separator (default = space-slash-space) as not been used.
      Comma and slash (no spaces) are poor delimiters as could be in name e.g. AC/DC,
      but here treat them as such in attempt to find artist names.
      When there are hints they could be poorly formatted using unexpected separators, 
      so attempt to split them. Or we could have more hints or artist names than 
      musicbrainz so ignore them but raise warning.
      */
       
      // Do hints exist yet mis-match
      if (!musicBrainzAlbumArtistHints.empty() &&
          musicBrainzAlbumArtistHints.size() != tag.GetMusicBrainzAlbumArtistID().size())
      {
        if (tag.GetAlbumArtist().size() == tag.GetMusicBrainzAlbumArtistID().size())
          // Album artist name count matches, use that as hints
          musicBrainzAlbumArtistHints = tag.GetAlbumArtist(); 
        else if (musicBrainzAlbumArtistHints.size() < tag.GetMusicBrainzAlbumArtistID().size())
        { // Try splitting the hints until have matching number
          musicBrainzAlbumArtistHints = StringUtils::SplitMulti(musicBrainzAlbumArtistHints, separators, tag.GetMusicBrainzAlbumArtistID().size());
        }
        else
          // Extra hints, discard them.
          musicBrainzAlbumArtistHints.resize(tag.GetMusicBrainzAlbumArtistID().size());
      }
      // Do hints not exist or still mis-match, try album artists
      if (musicBrainzAlbumArtistHints.size() != tag.GetMusicBrainzAlbumArtistID().size())
        musicBrainzAlbumArtistHints = tag.GetAlbumArtist();
      // Still mis-match, try splitting the hints (now artists) until have matching number
      if (musicBrainzAlbumArtistHints.size() < tag.GetMusicBrainzAlbumArtistID().size())
        musicBrainzAlbumArtistHints = StringUtils::SplitMulti(musicBrainzAlbumArtistHints, separators, tag.GetMusicBrainzAlbumArtistID().size());
      // Try matching on artists or artist hints field, if it is reliable
      if (musicBrainzAlbumArtistHints.size() != tag.GetMusicBrainzAlbumArtistID().size())
      {
        if (!tag.GetMusicBrainzArtistID().empty() && 
           (tag.GetMusicBrainzArtistID().size() == tag.GetArtist().size() ||
            tag.GetMusicBrainzArtistID().size() == tag.GetMusicBrainzArtistHints().size()))
        {
          for (size_t i = 0; i < tag.GetMusicBrainzAlbumArtistID().size(); i++)
          {
            for (size_t j = 0; j < tag.GetMusicBrainzArtistID().size(); j++)
            {
              if (tag.GetMusicBrainzAlbumArtistID()[i] == tag.GetMusicBrainzArtistID()[j])
              {
                if (musicBrainzAlbumArtistHints.size() < i + 1)
                  musicBrainzAlbumArtistHints.resize(i + 1);
                if (tag.GetMusicBrainzArtistID().size() == tag.GetMusicBrainzArtistHints().size())
                  musicBrainzAlbumArtistHints[j] = tag.GetMusicBrainzArtistHints()[j];
                else
                  musicBrainzAlbumArtistHints[j] = tag.GetArtist()[j];
              }
            }
          }
        }
      }
    }
    else
    { // Either hints or album artists (or both) name matches number of musicbrainz id
      // If hints mis-match, use album artists
      if (musicBrainzAlbumArtistHints.size() != tag.GetMusicBrainzAlbumArtistID().size())
        musicBrainzAlbumArtistHints = tag.GetAlbumArtist();
    }

    for (size_t i = 0; i < tag.GetMusicBrainzAlbumArtistID().size(); i++)
    {
      std::string artistId = tag.GetMusicBrainzAlbumArtistID()[i];
      std::string artistName;
      /*
         We try and get the mbrainzid <-> name matching from the hints and match on the same index.
         Some album artist hints could be blank (if populated from artist or artist hints).
         If not found, use the mbrainzid and hope we later on can update that entry
//.........这里部分代码省略.........