C++ CMusicInfoTag::GetAlbumArtist方法代码示例

CSong::CSong(CMusicInfoTag& tag)
{
  SYSTEMTIME stTime;
  tag.GetReleaseDate(stTime);
  strTitle = tag.GetTitle();
  strGenre = tag.GetGenre();
  strFileName = tag.GetURL();
  strArtist = tag.GetArtist();
  strAlbum = tag.GetAlbum();
  strAlbumArtist = tag.GetAlbumArtist();
  strComment = tag.GetComment();
  strLabel = tag.GetLabel(); // Laureon: Added getLabel 
  strISRC = tag.GetISRC(); // Laureon: Added getISRC
  iVisible = 1; // Laureon: Added: Song Visibility
  rating = tag.GetRating();
  iYear = stTime.wYear;
  iTrack = tag.GetTrackAndDiskNumber();
  iDuration = tag.GetDuration();
  strThumb = "";
  iStartOffset = 0;
  iEndOffset = 0;
  idSong = -1;
  iTimesPlayed = 0;
  iKaraokeNumber = 0;
  iKaraokeDelay = 0;         //! Karaoke song lyrics-music delay in 1/10 seconds.
  iArtistId = -1;
  iAlbumId = -1;
}

CSong::CSong(CMusicInfoTag& tag)
{
  SYSTEMTIME stTime;
  tag.GetReleaseDate(stTime);
  strTitle = tag.GetTitle();
  genre = tag.GetGenre();
  strFileName = tag.GetURL();
  artist = tag.GetArtist();
  strAlbum = tag.GetAlbum();
  albumArtist = tag.GetAlbumArtist();
  strMusicBrainzTrackID = tag.GetMusicBrainzTrackID();
  strMusicBrainzArtistID = tag.GetMusicBrainzArtistID();
  strMusicBrainzAlbumID = tag.GetMusicBrainzAlbumID();
  strMusicBrainzAlbumArtistID = tag.GetMusicBrainzAlbumArtistID();
  strMusicBrainzTRMID = tag.GetMusicBrainzTRMID();
  strComment = tag.GetComment();
  rating = tag.GetRating();
  iYear = stTime.wYear;
  iTrack = tag.GetTrackAndDiskNumber();
  iDuration = tag.GetDuration();
  bCompilation = tag.GetCompilation();
  embeddedArt = tag.GetCoverArtInfo();
  strThumb = "";
  iStartOffset = 0;
  iEndOffset = 0;
  idSong = -1;
  iTimesPlayed = 0;
  iKaraokeNumber = 0;
  iKaraokeDelay = 0;         //! Karaoke song lyrics-music delay in 1/10 seconds.
  iAlbumId = -1;
}

bool CMusicInfoTagLoaderMP4::Load(const CStdString& strFileName, CMusicInfoTag& tag, EmbeddedArt *art)
{
  try
  {
    // Initially we say that we've not loaded any tag information
    tag.SetLoaded(false);

    // Attempt to open the file..
    if ( !m_file.Open( strFileName ) )
    {
      CLog::Log(LOGDEBUG, "Tag loader mp4: failed to open file %s", strFileName.c_str() );
      return false;
    }

    // We've opened it, so associate the tag with the filename.
    tag.SetURL(strFileName);

    // Now go parse our atom data
    m_isCompilation = false;
    ParseAtom( 0, m_file.GetLength(), tag, art );

    if (m_isCompilation)
    { // iTunes compilation flag is set - this could be a various artists file
      if (tag.GetAlbumArtist().empty())
        tag.SetAlbumArtist(g_localizeStrings.Get(340)); // Various Artists
    }
    // Close the file..
    m_file.Close();

    // Return to caller
    return true;
  }

  catch (...)
  {
    CLog::Log(LOGERROR, "Tag loader mp4: exception in file %s", strFileName.c_str());
  }

  // Something must have gone wrong for us to get here, so let's report our failure to the boss..
  tag.SetLoaded(false);
  return false;
}

void CGUIWindowMusicBase::OnInfo(CFileItem *pItem, bool bShowInfo)
{
  if ((pItem->IsMusicDb() && !pItem->HasMusicInfoTag()) || pItem->IsParentFolder() ||
       URIUtils::IsSpecial(pItem->GetPath()) || pItem->GetPath().Left(14).Equals("musicsearch://"))
    return; // nothing to do

  if (!pItem->m_bIsFolder)
  { // song lookup
    ShowSongInfo(pItem);
    return;
  }

  CStdString strPath = pItem->GetPath();

  // Try to find an album to lookup from the current item
  CAlbum album;
  CArtist artist;
  bool foundAlbum = false;

  album.idAlbum = -1;

  // we have a folder
  if (pItem->IsMusicDb())
  {
    CQueryParams params;
    CDirectoryNode::GetDatabaseInfo(pItem->GetPath(), params);
    if (params.GetAlbumId() == -1)
    { // artist lookup
      artist.idArtist = params.GetArtistId();
      artist.strArtist = StringUtils::Join(pItem->GetMusicInfoTag()->GetArtist(), g_advancedSettings.m_musicItemSeparator);
    }
    else
    { // album lookup
      album.idAlbum = params.GetAlbumId();
      album.strAlbum = pItem->GetMusicInfoTag()->GetAlbum();
      album.artist = 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
  { // from filemode, so find the albums in the folder
    CFileItemList items;
    GetDirectory(strPath, items);

    // 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;
    }
    // check the first song we find in the folder, and grab it's album info
    for (int i = 0; i < items.Size() && !foundAlbum; i++)
    {
      CFileItemPtr 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.artist = tag->GetAlbumArtist().empty() ? 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();
      return;
    }

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

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

bool CMusicInfoTagLoaderMP4::Load(const CStdString& strFileName, CMusicInfoTag& tag)
{
  try
  {
    // Initially we say that we've not loaded any tag information
    tag.SetLoaded(false);

    // Attempt to open the file..
    if ( !m_file.Open( strFileName ) )
    {
      CLog::Log(LOGDEBUG, "Tag loader mp4: failed to open file %s", strFileName.c_str() );
      return false;
    }

    // We've opened it, so associate the tag with the filename.
    tag.SetURL(strFileName);

    // Now go parse our atom data
    m_thumbSize = false;
    m_thumbData = NULL;
    m_isCompilation = false;
    ParseAtom( 0, m_file.GetLength(), tag );

    if (m_thumbData)
    { // cache the thumb
      // if we don't have an album tag, cache with the full file path so that
      // other non-tagged files don't get this album image
      CStdString strCoverArt;
      if (!tag.GetAlbum().IsEmpty() && (!tag.GetAlbumArtist().IsEmpty() || !tag.GetArtist().IsEmpty()))
        strCoverArt = CThumbnailCache::GetAlbumThumb(&tag);
      else
        strCoverArt = CThumbnailCache::GetMusicThumb(tag.GetURL());
      if (!CUtil::ThumbExists(strCoverArt))
      {
        if (CPicture::CreateThumbnailFromMemory( m_thumbData, m_thumbSize, "", strCoverArt ) )
        {
          CUtil::ThumbCacheAdd( strCoverArt, true );
        }
        else
        {
          CLog::Log(LOGDEBUG, "%s unable to cache thumb as %s", __FUNCTION__, strCoverArt.c_str());
          CUtil::ThumbCacheAdd( strCoverArt, false );
        }
      }
      delete[] m_thumbData;
    }

    if (m_isCompilation)
    { // iTunes compilation flag is set - this could be a various artists file
      if (tag.GetAlbumArtist().IsEmpty())
        tag.SetAlbumArtist(g_localizeStrings.Get(340)); // Various Artists
    }
    // Close the file..
    m_file.Close();

    // Return to caller
    return true;
  }

  catch (...)
  {
    CLog::Log(LOGERROR, "Tag loader mp4: exception in file %s", strFileName.c_str());
  }

  // Something must have gone wrong for us to get here, so let's report our failure to the boss..
  tag.SetLoaded(false);
  return false;
}

void CMusicInfoTagLoaderWMA::SetTagValueBinary(const CStdString& strFrameName, const unsigned char* pValue, CMusicInfoTag& tag)
{
  if (strFrameName == "WM/Picture")
  {
    WM_PICTURE picture;
    int iPicOffset = 0;

    // Picture types: http://msdn.microsoft.com/library/en-us/wmform/htm/wm_picture.asp
    picture.bPictureType = (BYTE)pValue[iPicOffset];
    iPicOffset += 1;

    picture.dwDataLen = (DWORD)pValue[iPicOffset] + (pValue[iPicOffset + 1] * 0x100) + (pValue[iPicOffset + 2] * 0x10000);
    iPicOffset += 4;

    CStdStringW wString;
    CStdString16 utf16String = (uint16_t*)(pValue+iPicOffset);
    g_charsetConverter.utf16LEtoW(utf16String, wString);
    g_charsetConverter.wToUTF8(wString, picture.pwszMIMEType);
    iPicOffset += (wString.length() * 2);
    iPicOffset += 2;

    utf16String = (uint16_t*)(pValue+iPicOffset);
    g_charsetConverter.utf16LEtoW(utf16String, picture.pwszDescription);
    iPicOffset += (picture.pwszDescription.length() * 2);
    iPicOffset += 2;

    picture.pbData = (BYTE *)(pValue + iPicOffset);

    // many wma's don't have the bPictureType specified.  For now, just take
    // Cover Front (3) or Other (0) as the cover.
    if (picture.bPictureType == 3 || picture.bPictureType == 0) // Cover Front
    {
      CStdString strExtension(picture.pwszMIMEType);
      // if we don't have an album tag, cache with the full file path so that
      // other non-tagged files don't get this album image
      CStdString strCoverArt;
      if (!tag.GetAlbum().IsEmpty() && (!tag.GetAlbumArtist().IsEmpty() || !tag.GetArtist().IsEmpty()))
        strCoverArt = CUtil::GetCachedAlbumThumb(tag.GetAlbum(), tag.GetAlbumArtist().IsEmpty() ? tag.GetArtist() : tag.GetAlbumArtist());
      else
        strCoverArt = CUtil::GetCachedMusicThumb(tag.GetURL());
      if (!CUtil::ThumbExists(strCoverArt))
      {
        int nPos = strExtension.Find('/');
        if (nPos > -1)
          strExtension.Delete(0, nPos + 1);

        if (picture.pbData != NULL && picture.dwDataLen > 0)
        {
          if (CPicture::CreateThumbnailFromMemory(picture.pbData, picture.dwDataLen, strExtension, strCoverArt))
          {
            CUtil::ThumbCacheAdd(strCoverArt, true);
          }
          else
          {
            CUtil::ThumbCacheAdd(strCoverArt, false);
            CLog::Log(LOGERROR, "Tag loader wma: "
                                "Unable to create album art for %s "
                                "(extension=%s, size=%u)",
                      tag.GetURL().c_str(), strExtension.c_str(),
                      picture.dwDataLen);
          }
        }
      }
    }
  }
}

void CMusicInfoTagLoaderWMA::SetTagValueString(const CStdString& strFrameName, const CStdString& strValue, CMusicInfoTag& tag)
{
  if (strFrameName == "WM/AlbumTitle")
  {
    tag.SetAlbum(strValue);
  }
  else if (strFrameName == "WM/AlbumArtist")
  {
    if (tag.GetAlbumArtist().IsEmpty()) tag.SetAlbumArtist(strValue);
  }
  else if (strFrameName == "Author")
  {
    // Multiple artists are stored in multiple "Author" tags we have get them
    // separatly and merge them to our system
    if (tag.GetArtist().IsEmpty())
      tag.SetArtist(strValue);
    else
      tag.SetArtist(tag.GetArtist() + g_advancedSettings.m_musicItemSeparator + strValue);
  }
  else if (strFrameName == "WM/TrackNumber")
  {
    if (tag.GetTrackNumber() <= 0) tag.SetTrackNumber(atoi(strValue.c_str()));
  }
  else if (strFrameName == "WM/PartOfSet")
  {
    tag.SetPartOfSet(atoi(strValue.c_str()));
  }
  //else if (strFrameName=="WM/Track") // Old Tracknumber, should not be used anymore
  else if (strFrameName == "WM/Year")
  {
    SYSTEMTIME dateTime;
    dateTime.wYear = atoi(strValue.c_str());
    tag.SetReleaseDate(dateTime);
  }
  else if (strFrameName == "WM/Genre")
  {
    // Multiple genres are stared in multiple "WM/Genre" tags we have to get them
    // separatly and merge them to our system
    if (tag.GetGenre().IsEmpty())
      tag.SetGenre(strValue);
    else
      tag.SetGenre(tag.GetGenre() + g_advancedSettings.m_musicItemSeparator + strValue);
  }
  else if (strFrameName == "WM/Lyrics")
  {
    tag.SetLyrics(strValue);
  }
  //else if (strFrameName=="WM/DRM")
  //{
  // // File is DRM protected
  // pwszValue;
  //}
  //else if (strFrameName=="WM/Codec")
  //{
  // pwszValue;
  //}
  //else if (strFrameName=="WM/BeatsPerMinute")
  //{
  // pwszValue;
  //}
  //else if (strFrameName=="WM/Mood")
  //{
  // pwszValue;
  //}
  //else if (strFrameName=="WM/RadioStationName")
  //{
  // pwszValue;
  //}
  //else if (strFrameName=="WM/RadioStationOwner")
  //{
  // pwszValue;
  //}
}

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);
}

//.........这里部分代码省略.........
      }
    }
    return;
  }
// end boxee section  

  if (pItem->m_bIsFolder && pItem->IsParentFolder()) 
    return;

  if (!pItem->m_bIsFolder)
  { // song lookup
    ShowSongInfo(pItem);
    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;
  
  // we have a folder
  if (pItem->IsMusicDb())
  {
    CQueryParams params;
    CDirectoryNode::GetDatabaseInfo(pItem->m_strPath, params);
    if (params.GetAlbumId() == -1)
    { // artist lookup
      artist.idArtist = params.GetArtistId();
      artist.strArtist = pItem->GetMusicInfoTag()->GetArtist();
    }
    else
    { // album lookup
      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
  { // from filemode, so find the albums in the folder
    CFileItemList items;
    GetDirectory(strPath, items);

    // 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;
    }
    // check the first song we find in the folder, and grab it's album info
    for (int i = 0; i < items.Size() && !foundAlbum; i++)
    {
      CFileItemPtr 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();
      return;
    }

    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);
}