C++ flac::Picture类代码示例

/*
** Extracts cover art embedded in FLAC files.
**
*/
bool CCover::ExtractFLAC(TagLib::FLAC::File* file, const std::wstring& target)
{
	const TagLib::List<TagLib::FLAC::Picture*>& picList = file->pictureList();
	if (!picList.isEmpty())
	{
		// Let's grab the first image
		TagLib::FLAC::Picture* pic = picList[0];
		return WriteCover(pic->data(), target);
	}

	return false;
}

/*
** Extracts cover art embedded in FLAC files.
**
*/
bool QCoverArt::ExtractFLAC(TagLib::FLAC::File* file)
{
    const TagLib::List<TagLib::FLAC::Picture*>& picList = file->pictureList();
    if (!picList.isEmpty())
    {
        // Let's grab the first image
        TagLib::FLAC::Picture* pic = picList[0];
        img.loadFromData((const unsigned char*)pic->data().data(), (int)pic->data().size());

        return true;
    }

    return false;
}

QImage SoundSourceSndFile::parseCoverArt() {
    QImage coverArt;
    QString location = getFilename();
    setType(location.section(".",-1).toLower());
    const QByteArray qBAFilename(getFilename().toLocal8Bit());

    if (getType() == "flac") {
        TagLib::FLAC::File f(qBAFilename.constData());
        TagLib::ID3v2::Tag* id3v2 = f.ID3v2Tag();
        if (id3v2) {
            coverArt = Mixxx::getCoverInID3v2Tag(*id3v2);
        }
        if (coverArt.isNull()) {
            TagLib::Ogg::XiphComment *xiph = f.xiphComment();
            if (xiph) {
                coverArt = Mixxx::getCoverInXiphComment(*xiph);
            }
        }
        if (coverArt.isNull()) {
            TagLib::List<TagLib::FLAC::Picture*> covers = f.pictureList();
            if (!covers.isEmpty()) {
                std::list<TagLib::FLAC::Picture*>::iterator it = covers.begin();
                TagLib::FLAC::Picture* cover = *it;
                coverArt = QImage::fromData(
                    QByteArray(cover->data().data(), cover->data().size()));
            }
        }
    } else if (getType() == "wav") {
        TagLib::RIFF::WAV::File f(qBAFilename.constData());
        TagLib::ID3v2::Tag* id3v2 = f.tag();
        if (id3v2) {
            coverArt = Mixxx::getCoverInID3v2Tag(*id3v2);
        }
    } else {
        // Try AIFF
        TagLib::RIFF::AIFF::File f(qBAFilename.constData());
        TagLib::ID3v2::Tag* id3v2 = f.tag();
        if (id3v2) {
            coverArt = Mixxx::getCoverInID3v2Tag(*id3v2);
        }
    }
    return coverArt;
}

QImage SoundSourceFLAC::parseCoverArt() {
    QImage coverArt;
    setType("flac");
    TagLib::FLAC::File f(m_qFilename.toLocal8Bit().constData());
    coverArt = getCoverInID3v2Tag(f.ID3v2Tag());
    if (coverArt.isNull()) {
        coverArt = getCoverInXiphComment(f.xiphComment());
    }
    if (coverArt.isNull()) {
        TagLib::List<TagLib::FLAC::Picture*> covers = f.pictureList();
        if (!covers.isEmpty()) {
            std::list<TagLib::FLAC::Picture*>::iterator it = covers.begin();
            TagLib::FLAC::Picture* cover = *it;
            coverArt = QImage::fromData(
                QByteArray(cover->data().data(), cover->data().size()));
        }
    }
    return coverArt;
}

bool mediaFLAC(Artwork *art, const char *filePath)
{
    TagLib::FLAC::File f(filePath);
    if (!f.tag()) {
        return false;
    }
    if (!mediaTag(art, &f)) {
        return false;
    }
    art->filetype = FILETYPE_FLAC;

#if 0
    const TagLib::List<TagLib::FLAC::Picture*> picturelist = f->pictureList();
    for(TagLib::List<TagLib::FLAC::Picture*>::ConstIterator it = picturelist.begin();
        it != picturelist.end();
        it++) {
        TagLib::FLAC::Picture *picture = (*it);
        if (picture) {
            if (picture->type() == TagLib::FLAC::Picture::FileIcon ||
                    picture->type() == TagLib::FLAC::Picture::OtherFileIcon ||
                    picture->type( )== TagLib::FLAC::Picture::ColouredFish) {
                // skip!
            }
            else {
                if (!art->hasCover()) {
                    saveImage(art, (const uchar *) picture->data().data(), picture->data().size());
                }
                break;
            }
        }
    }

#endif

    return art;
}

QByteArray TagReader::LoadEmbeddedArt(const QString& filename) const {
  if (filename.isEmpty()) return QByteArray();

  qLog(Debug) << "Loading art from" << filename;

#ifdef Q_OS_WIN32
  TagLib::FileRef ref(filename.toStdWString().c_str());
#else
  TagLib::FileRef ref(QFile::encodeName(filename).constData());
#endif

  if (ref.isNull() || !ref.file()) return QByteArray();

  // MP3
  TagLib::MPEG::File* file = dynamic_cast<TagLib::MPEG::File*>(ref.file());
  if (file && file->ID3v2Tag()) {
    TagLib::ID3v2::FrameList apic_frames =
        file->ID3v2Tag()->frameListMap()["APIC"];
    if (apic_frames.isEmpty()) return QByteArray();

    TagLib::ID3v2::AttachedPictureFrame* pic =
        static_cast<TagLib::ID3v2::AttachedPictureFrame*>(apic_frames.front());

    return QByteArray((const char*)pic->picture().data(),
                      pic->picture().size());
  }

  // Ogg vorbis/speex
  TagLib::Ogg::XiphComment* xiph_comment =
      dynamic_cast<TagLib::Ogg::XiphComment*>(ref.file()->tag());

  if (xiph_comment) {
    TagLib::Ogg::FieldListMap map = xiph_comment->fieldListMap();

    // Other than the below mentioned non-standard COVERART,
    // METADATA_BLOCK_PICTURE
    // is the proposed tag for cover pictures.
    // (see http://wiki.xiph.org/VorbisComment#METADATA_BLOCK_PICTURE)
    if (map.contains("METADATA_BLOCK_PICTURE")) {
      TagLib::StringList pict_list = map["METADATA_BLOCK_PICTURE"];
      for (std::list<TagLib::String>::iterator it = pict_list.begin();
           it != pict_list.end(); ++it) {
        QByteArray data(QByteArray::fromBase64(it->toCString()));
        TagLib::ByteVector tdata(data.data(), data.size());
        TagLib::FLAC::Picture p(tdata);
        if (p.type() == TagLib::FLAC::Picture::FrontCover)
          return QByteArray(p.data().data(), p.data().size());
      }
      // If there was no specific front cover, just take the first picture
      QByteArray data(QByteArray::fromBase64(
          map["METADATA_BLOCK_PICTURE"].front().toCString()));
      TagLib::ByteVector tdata(data.data(), data.size());
      TagLib::FLAC::Picture p(tdata);
      return QByteArray(p.data().data(), p.data().size());
    }

    // Ogg lacks a definitive standard for embedding cover art, but it seems
    // b64 encoding a field called COVERART is the general convention
    if (!map.contains("COVERART")) return QByteArray();

    return QByteArray::fromBase64(map["COVERART"].toString().toCString());
  }

#ifdef TAGLIB_HAS_FLAC_PICTURELIST
  // Flac
  TagLib::FLAC::File* flac_file = dynamic_cast<TagLib::FLAC::File*>(ref.file());
  if (flac_file && flac_file->xiphComment()) {
    TagLib::List<TagLib::FLAC::Picture*> pics = flac_file->pictureList();
    if (!pics.isEmpty()) {
      // Use the first picture in the file - this could be made cleverer and
      // pick the front cover if it's present.

      std::list<TagLib::FLAC::Picture*>::iterator it = pics.begin();
      TagLib::FLAC::Picture* picture = *it;

      return QByteArray(picture->data().data(), picture->data().size());
    }
  }
#endif

  // MP4/AAC
  TagLib::MP4::File* aac_file = dynamic_cast<TagLib::MP4::File*>(ref.file());
  if (aac_file) {
    TagLib::MP4::Tag* tag = aac_file->tag();
    const TagLib::MP4::ItemListMap& items = tag->itemListMap();
    TagLib::MP4::ItemListMap::ConstIterator it = items.find("covr");
    if (it != items.end()) {
      const TagLib::MP4::CoverArtList& art_list = it->second.toCoverArtList();

      if (!art_list.isEmpty()) {
        // Just take the first one for now
        const TagLib::MP4::CoverArt& art = art_list.front();
        return QByteArray(art.data().data(), art.data().size());
      }
    }
  }

  return QByteArray();
}

bool CTagLoaderTagLib::ParseTag(Ogg::XiphComment *xiph, EmbeddedArt *art, CMusicInfoTag& tag)
{
  if (!xiph)
    return false;

  FLAC::Picture pictures[3];
  ReplayGain replayGainInfo;

  const Ogg::FieldListMap& fieldListMap = xiph->fieldListMap();
  for (Ogg::FieldListMap::ConstIterator it = fieldListMap.begin(); it != fieldListMap.end(); ++it)
  {
    if (it->first == "ARTIST")
      SetArtist(tag, StringListToVectorString(it->second));
    else if (it->first == "ARTISTS")
      tag.SetMusicBrainzArtistHints(StringListToVectorString(it->second));
    else if (it->first == "ALBUMARTIST" || it->first == "ALBUM ARTIST")
      SetAlbumArtist(tag, StringListToVectorString(it->second));
    else if (it->first == "ALBUMARTISTS" || it->first == "ALBUM ARTISTS")
      tag.SetMusicBrainzAlbumArtistHints(StringListToVectorString(it->second));
    else if (it->first == "ALBUM")
      tag.SetAlbum(it->second.front().to8Bit(true));
    else if (it->first == "TITLE")
      tag.SetTitle(it->second.front().to8Bit(true));
    else if (it->first == "TRACKNUMBER")
      tag.SetTrackNumber(it->second.front().toInt());
    else if (it->first == "DISCNUMBER")
      tag.SetDiscNumber(it->second.front().toInt());
    else if (it->first == "YEAR")
      tag.SetYear(it->second.front().toInt());
    else if (it->first == "DATE")
      tag.SetYear(it->second.front().toInt());
    else if (it->first == "GENRE")
      SetGenre(tag, StringListToVectorString(it->second));
    else if (it->first == "COMMENT")
      tag.SetComment(it->second.front().to8Bit(true));
    else if (it->first == "CUESHEET")
      tag.SetCueSheet(it->second.front().to8Bit(true));
    else if (it->first == "ENCODEDBY")
    {}
    else if (it->first == "ENSEMBLE")
    {}
    else if (it->first == "COMPILATION")
      tag.SetCompilation(it->second.front().toInt() == 1);
    else if (it->first == "LYRICS")
      tag.SetLyrics(it->second.front().to8Bit(true));
    else if (it->first == "REPLAYGAIN_TRACK_GAIN")
      replayGainInfo.ParseGain(ReplayGain::TRACK, it->second.front().toCString(true));
    else if (it->first == "REPLAYGAIN_ALBUM_GAIN")
      replayGainInfo.ParseGain(ReplayGain::ALBUM, it->second.front().toCString(true));
    else if (it->first == "REPLAYGAIN_TRACK_PEAK")
      replayGainInfo.ParsePeak(ReplayGain::TRACK, it->second.front().toCString(true));
    else if (it->first == "REPLAYGAIN_ALBUM_PEAK")
      replayGainInfo.ParsePeak(ReplayGain::ALBUM, it->second.front().toCString(true));
    else if (it->first == "MUSICBRAINZ_ARTISTID")
      tag.SetMusicBrainzArtistID(SplitMBID(StringListToVectorString(it->second)));
    else if (it->first == "MUSICBRAINZ_ALBUMARTISTID")
      tag.SetMusicBrainzAlbumArtistID(SplitMBID(StringListToVectorString(it->second)));
    else if (it->first == "MUSICBRAINZ_ALBUMARTIST")
      SetAlbumArtist(tag, StringListToVectorString(it->second));
    else if (it->first == "MUSICBRAINZ_ALBUMID")
      tag.SetMusicBrainzAlbumID(it->second.front().to8Bit(true));
    else if (it->first == "MUSICBRAINZ_TRACKID")
      tag.SetMusicBrainzTrackID(it->second.front().to8Bit(true));
    else if (it->first == "RATING")
    {
      // Vorbis ratings are a mess because the standard forgot to mention anything about them.
      // If you want to see how emotive the issue is and the varying standards, check here:
      // http://forums.winamp.com/showthread.php?t=324512
      // The most common standard in that thread seems to be a 0-100 scale for 1-5 stars.
      // So, that's what we'll support for now.
      int iRating = it->second.front().toInt();
      if (iRating > 0 && iRating <= 100)
        tag.SetUserrating((iRating / 20) + '0');
    }
    else if (it->first == "METADATA_BLOCK_PICTURE")
    {
      const char* b64 = it->second.front().toCString();
      std::string decoded_block = Base64::Decode(b64, it->second.front().size());
      ByteVector bv(decoded_block.data(), decoded_block.size());
      TagLib::FLAC::Picture* pictureFrame = new TagLib::FLAC::Picture(bv);

      if      (pictureFrame->type() == FLAC::Picture::FrontCover) pictures[0].parse(bv);
      else if (pictureFrame->type() == FLAC::Picture::Other)      pictures[1].parse(bv);

      delete pictureFrame;
    }
    else if (it->first == "COVERART")
    {
      const char* b64 = it->second.front().toCString();
      std::string decoded_block = Base64::Decode(b64, it->second.front().size());
      ByteVector bv(decoded_block.data(), decoded_block.size());
      pictures[2].setData(bv);
      // Assume jpeg
      if (pictures[2].mimeType().isEmpty())
        pictures[2].setMimeType("image/jpeg");
    }
    else if (it->first == "COVERARTMIME")
    {
      pictures[2].setMimeType(it->second.front());
    }
//.........这里部分代码省略.........

bool FLACMetadata::WriteMetadata(CFErrorRef *error)
{
	UInt8 buf [PATH_MAX];
	if(!CFURLGetFileSystemRepresentation(mURL, false, buf, PATH_MAX))
		return false;

	auto stream = new TagLib::FileStream(reinterpret_cast<const char *>(buf));
	TagLib::FLAC::File file(stream, TagLib::ID3v2::FrameFactory::instance(), false);

	if(!file.isValid()) {
		if(error) {
			CFStringRef description = CFCopyLocalizedString(CFSTR("The file “%@” is not a valid FLAC file."), "");
			CFStringRef failureReason = CFCopyLocalizedString(CFSTR("Not a FLAC file"), "");
			CFStringRef recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
			
			*error = CreateErrorForURL(AudioMetadataErrorDomain, AudioMetadataInputOutputError, description, mURL, failureReason, recoverySuggestion);
			
			CFRelease(description), description = nullptr;
			CFRelease(failureReason), failureReason = nullptr;
			CFRelease(recoverySuggestion), recoverySuggestion = nullptr;
		}

		return false;
	}

	SetXiphCommentFromMetadata(*this, file.xiphComment(), false);

	// Remove existing cover art
	file.removePictures();

	// Add album art
	for(auto attachedPicture : GetAttachedPictures()) {
	
		CGImageSourceRef imageSource = CGImageSourceCreateWithData(attachedPicture->GetData(), nullptr);
		if(nullptr == imageSource) {
			LOGGER_ERR("org.sbooth.AudioEngine.AudioMetadata.FLAC", "Skipping album art (unable to create image)");
			continue;
		}

		TagLib::FLAC::Picture *picture = new TagLib::FLAC::Picture;
		picture->setData(TagLib::ByteVector((const char *)CFDataGetBytePtr(attachedPicture->GetData()), (TagLib::uint)CFDataGetLength(attachedPicture->GetData())));
		picture->setType(static_cast<TagLib::FLAC::Picture::Type>(attachedPicture->GetType()));
		if(attachedPicture->GetDescription())
			picture->setDescription(TagLib::StringFromCFString(attachedPicture->GetDescription()));

		// Convert the image's UTI into a MIME type
		CFStringRef mimeType = UTTypeCopyPreferredTagWithClass(CGImageSourceGetType(imageSource), kUTTagClassMIMEType);
		if(mimeType) {
			picture->setMimeType(TagLib::StringFromCFString(mimeType));
			CFRelease(mimeType), mimeType = nullptr;
		}

		// Flesh out the height, width, and depth
		CFDictionaryRef imagePropertiesDictionary = CGImageSourceCopyPropertiesAtIndex(imageSource, 0, nullptr);
		if(imagePropertiesDictionary) {
			CFNumberRef imageWidth = (CFNumberRef)CFDictionaryGetValue(imagePropertiesDictionary, kCGImagePropertyPixelWidth);
			CFNumberRef imageHeight = (CFNumberRef)CFDictionaryGetValue(imagePropertiesDictionary, kCGImagePropertyPixelHeight);
			CFNumberRef imageDepth = (CFNumberRef)CFDictionaryGetValue(imagePropertiesDictionary, kCGImagePropertyDepth);

			int height, width, depth;

			// Ignore numeric conversion errors
			CFNumberGetValue(imageWidth, kCFNumberIntType, &width);
			CFNumberGetValue(imageHeight, kCFNumberIntType, &height);
			CFNumberGetValue(imageDepth, kCFNumberIntType, &depth);

			picture->setHeight(height);
			picture->setWidth(width);
			picture->setColorDepth(depth);

			CFRelease(imagePropertiesDictionary), imagePropertiesDictionary = nullptr;
		}

		file.addPicture(picture);

		CFRelease(imageSource), imageSource = nullptr;
	}

	if(!file.save()) {
		if(error) {
			CFStringRef description = CFCopyLocalizedString(CFSTR("The file “%@” is not a valid FLAC file."), "");
			CFStringRef failureReason = CFCopyLocalizedString(CFSTR("Unable to write metadata"), "");
			CFStringRef recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
			
			*error = CreateErrorForURL(AudioMetadataErrorDomain, AudioMetadataInputOutputError, description, mURL, failureReason, recoverySuggestion);
			
			CFRelease(description), description = nullptr;
			CFRelease(failureReason), failureReason = nullptr;
			CFRelease(recoverySuggestion), recoverySuggestion = nullptr;
		}

		return false;
	}

	MergeChangedMetadataIntoMetadata();

	return true;
}

bool SFB::Audio::AddAPETagToDictionary(CFMutableDictionaryRef dictionary, std::vector<std::shared_ptr<AttachedPicture>>& attachedPictures, const TagLib::APE::Tag *tag)
{
	if(nullptr == dictionary || nullptr == tag)
		return false;

	if(tag->isEmpty())
		return true;

	SFB::CFMutableDictionary additionalMetadata(0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
	
	for(auto iterator : tag->itemListMap()) {
		auto item = iterator.second;

		if(item.isEmpty())
			continue;

		if(TagLib::APE::Item::Text == item.type()) {
			SFB::CFString key(item.key().toCString(true), kCFStringEncodingUTF8);
			SFB::CFString value(item.toString().toCString(true), kCFStringEncodingUTF8);

			if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUM"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kAlbumTitleKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ARTIST"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kArtistKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUMARTIST"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kAlbumArtistKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("COMPOSER"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kComposerKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("GENRE"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kGenreKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DATE"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kReleaseDateKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DESCRIPTION"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kCommentKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TITLE"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kTitleKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TRACKNUMBER"), kCFCompareCaseInsensitive))
				AddIntToDictionary(dictionary, Metadata::kTrackNumberKey, CFStringGetIntValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TRACKTOTAL"), kCFCompareCaseInsensitive))
				AddIntToDictionary(dictionary, Metadata::kTrackTotalKey, CFStringGetIntValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("COMPILATION"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kCompilationKey, CFStringGetIntValue(value) ? kCFBooleanTrue : kCFBooleanFalse);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DISCNUMBER"), kCFCompareCaseInsensitive))
				AddIntToDictionary(dictionary, Metadata::kDiscNumberKey, CFStringGetIntValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DISCTOTAL"), kCFCompareCaseInsensitive))
				AddIntToDictionary(dictionary, Metadata::kDiscTotalKey, CFStringGetIntValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("LYRICS"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kLyricsKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("BPM"), kCFCompareCaseInsensitive))
				AddIntToDictionary(dictionary, Metadata::kBPMKey, CFStringGetIntValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("RATING"), kCFCompareCaseInsensitive))
				AddIntToDictionary(dictionary, Metadata::kRatingKey, CFStringGetIntValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ISRC"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kISRCKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("MCN"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kMCNKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("MUSICBRAINZ_ALBUMID"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kMusicBrainzReleaseIDKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("MUSICBRAINZ_TRACKID"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kMusicBrainzRecordingIDKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TITLESORT"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kTitleSortOrderKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUMTITLESORT"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kAlbumTitleSortOrderKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ARTISTSORT"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kArtistSortOrderKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUMARTISTSORT"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kAlbumArtistSortOrderKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("COMPOSERSORT"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kComposerSortOrderKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("GROUPING"), kCFCompareCaseInsensitive))
				CFDictionarySetValue(dictionary, Metadata::kGroupingKey, value);
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_REFERENCE_LOUDNESS"), kCFCompareCaseInsensitive))
				AddDoubleToDictionary(dictionary, Metadata::kReferenceLoudnessKey, CFStringGetDoubleValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_TRACK_GAIN"), kCFCompareCaseInsensitive))
				AddDoubleToDictionary(dictionary, Metadata::kTrackGainKey, CFStringGetDoubleValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_TRACK_PEAK"), kCFCompareCaseInsensitive))
				AddDoubleToDictionary(dictionary, Metadata::kTrackPeakKey, CFStringGetDoubleValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_ALBUM_GAIN"), kCFCompareCaseInsensitive))
				AddDoubleToDictionary(dictionary, Metadata::kAlbumGainKey, CFStringGetDoubleValue(value));
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_ALBUM_PEAK"), kCFCompareCaseInsensitive))
				AddDoubleToDictionary(dictionary, Metadata::kAlbumPeakKey, CFStringGetDoubleValue(value));
#if 0
			else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("METADATA_BLOCK_PICTURE"), kCFCompareCaseInsensitive)) {
				// Handle embedded pictures
				for(auto blockIterator : item.values()) {
					auto encodedBlock = blockIterator.data(TagLib::String::UTF8);

					// Decode the Base-64 encoded data
					auto decodedBlock = TagLib::DecodeBase64(encodedBlock);

					// Create the picture
					TagLib::FLAC::Picture picture;
					picture.parse(decodedBlock);

					SFB::CFData data((const UInt8 *)picture.data().data(), picture.data().size());

					SFB::CFString description = nullptr;
					if(!picture.description().isNull())
						description(picture.description().toCString(true), kCFStringEncodingUTF8);
//.........这里部分代码省略.........

bool SFB::Audio::AddXiphCommentToDictionary(CFMutableDictionaryRef dictionary, std::vector<std::shared_ptr<AttachedPicture>>& attachedPictures, const TagLib::Ogg::XiphComment *tag)
{
	if(nullptr == dictionary || nullptr == tag)
		return false;

	SFB::CFMutableDictionary additionalMetadata = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

	for(auto it : tag->fieldListMap()) {
		// According to the Xiph comment specification keys should only contain a limited subset of ASCII, but UTF-8 is a safer choice
		SFB::CFString key = CFStringCreateWithCString(kCFAllocatorDefault, it.first.toCString(true), kCFStringEncodingUTF8);
		
		// Vorbis allows multiple comments with the same key, but this isn't supported by AudioMetadata
		SFB::CFString value = CFStringCreateWithCString(kCFAllocatorDefault, it.second.front().toCString(true), kCFStringEncodingUTF8);
		
		if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUM"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kAlbumTitleKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ARTIST"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kArtistKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUMARTIST"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kAlbumArtistKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("COMPOSER"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kComposerKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("GENRE"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kGenreKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DATE"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kReleaseDateKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DESCRIPTION"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kCommentKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TITLE"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kTitleKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TRACKNUMBER"), kCFCompareCaseInsensitive))
			AddIntToDictionary(dictionary, Metadata::kTrackNumberKey, CFStringGetIntValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TRACKTOTAL"), kCFCompareCaseInsensitive))
			AddIntToDictionary(dictionary, Metadata::kTrackTotalKey, CFStringGetIntValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("COMPILATION"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kCompilationKey, CFStringGetIntValue(value) ? kCFBooleanTrue : kCFBooleanFalse);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DISCNUMBER"), kCFCompareCaseInsensitive))
			AddIntToDictionary(dictionary, Metadata::kDiscNumberKey, CFStringGetIntValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("DISCTOTAL"), kCFCompareCaseInsensitive))
			AddIntToDictionary(dictionary, Metadata::kDiscTotalKey, CFStringGetIntValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("LYRICS"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kLyricsKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("BPM"), kCFCompareCaseInsensitive))
			AddIntToDictionary(dictionary, Metadata::kBPMKey, CFStringGetIntValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("RATING"), kCFCompareCaseInsensitive))
			AddIntToDictionary(dictionary, Metadata::kRatingKey, CFStringGetIntValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ISRC"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kISRCKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("MCN"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kMCNKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("MUSICBRAINZ_ALBUMID"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kMusicBrainzReleaseIDKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("MUSICBRAINZ_TRACKID"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kMusicBrainzRecordingIDKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("TITLESORT"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kTitleSortOrderKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUMTITLESORT"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kAlbumTitleSortOrderKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ARTISTSORT"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kArtistSortOrderKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("ALBUMARTISTSORT"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kAlbumArtistSortOrderKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("COMPOSERSORT"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kComposerSortOrderKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("GROUPING"), kCFCompareCaseInsensitive))
			CFDictionarySetValue(dictionary, Metadata::kGroupingKey, value);
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_REFERENCE_LOUDNESS"), kCFCompareCaseInsensitive))
			AddDoubleToDictionary(dictionary, Metadata::kReferenceLoudnessKey, CFStringGetDoubleValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_TRACK_GAIN"), kCFCompareCaseInsensitive))
			AddDoubleToDictionary(dictionary, Metadata::kTrackGainKey, CFStringGetDoubleValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_TRACK_PEAK"), kCFCompareCaseInsensitive))
			AddDoubleToDictionary(dictionary, Metadata::kTrackPeakKey, CFStringGetDoubleValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_ALBUM_GAIN"), kCFCompareCaseInsensitive))
			AddDoubleToDictionary(dictionary, Metadata::kAlbumGainKey, CFStringGetDoubleValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("REPLAYGAIN_ALBUM_PEAK"), kCFCompareCaseInsensitive))
			AddDoubleToDictionary(dictionary, Metadata::kAlbumPeakKey, CFStringGetDoubleValue(value));
		else if(kCFCompareEqualTo == CFStringCompare(key, CFSTR("METADATA_BLOCK_PICTURE"), kCFCompareCaseInsensitive)) {
			// Handle embedded pictures
			for(auto blockIterator : it.second) {
				auto encodedBlock = blockIterator.data(TagLib::String::UTF8);

				// Decode the Base-64 encoded data
				auto decodedBlock = TagLib::DecodeBase64(encodedBlock);

				// Create the picture
				TagLib::FLAC::Picture picture;
				picture.parse(decodedBlock);
				
				SFB::CFData data = CFDataCreate(kCFAllocatorDefault, (const UInt8 *)picture.data().data(), (CFIndex)picture.data().size());

				SFB::CFString description;
				if(!picture.description().isEmpty())
					description = CFStringCreateWithCString(kCFAllocatorDefault, picture.description().toCString(true), kCFStringEncodingUTF8);

				attachedPictures.push_back(std::make_shared<AttachedPicture>(data, (AttachedPicture::Type)picture.type(), description));
			}
		}
		// Put all unknown tags into the additional metadata
		else
			CFDictionarySetValue(additionalMetadata, key, value);
//.........这里部分代码省略.........

bool
SetAPETagFromMetadata(const AudioMetadata& metadata, TagLib::APE::Tag *tag, bool setAlbumArt)
{
	if(nullptr == tag)
		return false;

	// Standard tags
	SetAPETag(tag, "ALBUM", metadata.GetAlbumTitle());
	SetAPETag(tag, "ARTIST", metadata.GetArtist());
	SetAPETag(tag, "ALBUMARTIST", metadata.GetAlbumArtist());
	SetAPETag(tag, "COMPOSER", metadata.GetComposer());
	SetAPETag(tag, "GENRE", metadata.GetGenre());
	SetAPETag(tag, "DATE", metadata.GetReleaseDate());
	SetAPETag(tag, "DESCRIPTION", metadata.GetComment());
	SetAPETag(tag, "TITLE", metadata.GetTitle());
	SetAPETagNumber(tag, "TRACKNUMBER", metadata.GetTrackNumber());
	SetAPETagNumber(tag, "TRACKTOTAL", metadata.GetTrackTotal());
	SetAPETagBoolean(tag, "COMPILATION", metadata.GetCompilation());
	SetAPETagNumber(tag, "DISCNUMBER", metadata.GetDiscNumber());
	SetAPETagNumber(tag, "DISCTOTAL", metadata.GetDiscTotal());
	SetAPETagNumber(tag, "BPM", metadata.GetBPM());
	SetAPETagNumber(tag, "RATING", metadata.GetRating());
	SetAPETag(tag, "ISRC", metadata.GetISRC());
	SetAPETag(tag, "MCN", metadata.GetMCN());
	SetAPETag(tag, "TITLESORT", metadata.GetTitleSortOrder());
	SetAPETag(tag, "ALBUMTITLESORT", metadata.GetAlbumTitleSortOrder());
	SetAPETag(tag, "ARTISTSORT", metadata.GetArtistSortOrder());
	SetAPETag(tag, "ALBUMARTISTSORT", metadata.GetAlbumArtistSortOrder());
	SetAPETag(tag, "COMPOSERSORT", metadata.GetComposerSortOrder());
	SetAPETag(tag, "GROUPING", metadata.GetGrouping());

	// Additional metadata
	CFDictionaryRef additionalMetadata = metadata.GetAdditionalMetadata();
	if(nullptr != additionalMetadata) {
		CFIndex count = CFDictionaryGetCount(additionalMetadata);
		
		const void * keys [count];
		const void * values [count];
		
		CFDictionaryGetKeysAndValues(additionalMetadata, reinterpret_cast<const void **>(keys), reinterpret_cast<const void **>(values));
		
		for(CFIndex i = 0; i < count; ++i) {
			CFIndex keySize = CFStringGetMaximumSizeForEncoding(CFStringGetLength(reinterpret_cast<CFStringRef>(keys[i])), kCFStringEncodingASCII);
			char key [keySize + 1];
			
			if(!CFStringGetCString(reinterpret_cast<CFStringRef>(keys[i]), key, keySize + 1, kCFStringEncodingASCII)) {
				LOGGER_ERR("org.sbooth.AudioEngine", "CFStringGetCString failed");
				continue;
			}
			
			SetAPETag(tag, key, reinterpret_cast<CFStringRef>(values[i]));
		}
	}
	
	// ReplayGain info
	SetAPETagDouble(tag, "REPLAYGAIN_REFERENCE_LOUDNESS", metadata.GetReplayGainReferenceLoudness(), CFSTR("%2.1f dB"));
	SetAPETagDouble(tag, "REPLAYGAIN_TRACK_GAIN", metadata.GetReplayGainTrackGain(), CFSTR("%+2.2f dB"));
	SetAPETagDouble(tag, "REPLAYGAIN_TRACK_PEAK", metadata.GetReplayGainTrackPeak(), CFSTR("%1.8f"));
	SetAPETagDouble(tag, "REPLAYGAIN_ALBUM_GAIN", metadata.GetReplayGainAlbumGain(), CFSTR("%+2.2f dB"));
	SetAPETagDouble(tag, "REPLAYGAIN_ALBUM_PEAK", metadata.GetReplayGainAlbumPeak(), CFSTR("%1.8f"));

	// Album art
	if(setAlbumArt) {
		tag->removeItem("Cover Art (Front)");
		tag->removeItem("Cover Art (Back)");
#if 0
		tag->removeItem("METADATA_BLOCK_PICTURE");
#endif

		for(auto attachedPicture : metadata.GetAttachedPictures()) {
			// APE can handle front and back covers natively
			if(AttachedPicture::Type::FrontCover == attachedPicture->GetType() || AttachedPicture::Type::FrontCover == attachedPicture->GetType()) {
				TagLib::ByteVector data;
				
				if(attachedPicture->GetDescription())
					data.append(TagLib::StringFromCFString(attachedPicture->GetDescription()).data(TagLib::String::UTF8));
				data.append('\0');
				data.append(TagLib::ByteVector((const char *)CFDataGetBytePtr(attachedPicture->GetData()), (TagLib::uint)CFDataGetLength(attachedPicture->GetData())));

				if(AttachedPicture::Type::FrontCover == attachedPicture->GetType())
					tag->setData("Cover Art (Front)", data);
				else if(AttachedPicture::Type::BackCover == attachedPicture->GetType())
					tag->setData("Cover Art (Back)", data);
			}
#if 0
			else {
				CGImageSourceRef imageSource = CGImageSourceCreateWithData(attachedPicture->GetData(), nullptr);
				if(nullptr == imageSource)
					return false;

				TagLib::FLAC::Picture picture;
				picture.setData(TagLib::ByteVector((const char *)CFDataGetBytePtr(attachedPicture->GetData()), (TagLib::uint)CFDataGetLength(attachedPicture->GetData())));
				picture.setType(static_cast<TagLib::FLAC::Picture::Type>(attachedPicture->GetType()));
				if(attachedPicture->GetDescription())
					picture.setDescription(TagLib::StringFromCFString(attachedPicture->GetDescription()));

				// Convert the image's UTI into a MIME type
				CFStringRef mimeType = UTTypeCopyPreferredTagWithClass(CGImageSourceGetType(imageSource), kUTTagClassMIMEType);
				if(mimeType) {
					picture.setMimeType(TagLib::StringFromCFString(mimeType));
//.........这里部分代码省略.........

void import_flac_file(const std::string& filename)
{
  //std::cerr << "import_flac_file " << filename << std::endl;

  TagLib::FLAC::File file(filename.c_str());

  auto tag = file.tag();

  auto artist_name = tag->artist().to8Bit(true);
  auto album_title = tag->album().to8Bit(true);
  auto track_title = tag->title().to8Bit(true);

  auto artist = dm::artist::find_by_name(artist_name);

  if ( artist.is_null() )
  {
    // Create artist.
    artist.name(artist_name);
    artist.save();
  }

  auto album = artist.find_album_by_title(album_title);

  if ( album.is_null() )
  {
    // Create album.
    album.title(album_title);
    album.member("artist", json::object{ { "id", artist.id() }, { "name", artist.name() } });
    album.save();

    // Add album to artist albums.
    artist.add_album(album);
    artist.save();
  }

  auto track = album.find_track_by_title_and_number(track_title, tag->track());

  // Set/update track attributes.

  track.title(track_title);
  track.track_number(tag->track());
  track.disc_number(1);

  // Create track source object.
  json::object source{ { "name", "local" }, { "uri", filename } };

  TagLib::FLAC::Properties* properties = file.audioProperties();
  if ( properties )
  {
    track.duration(properties->length());
  }

  TagLib::Ogg::XiphComment* xiph_comment = file.xiphComment();
  if ( xiph_comment )
  {
    auto field_map = xiph_comment->fieldListMap();

    json::object replaygain;

    for ( auto& field : field_map )
    {
      if ( field.first == "TRACK NUMBER" || field.first == "TRACKNUMBER" )
      {
        if ( field.second.size() > 0 ) {
          track.track_number(std::stoi(field.second[0].to8Bit()));
        }
        else {
          std::cerr << "field='" << field.first << "' string list size=" << field.second.size() << std::endl;
        }
      }
      else if ( field.first == "DISC NUMBER" || field.first == "DISCNUMBER" )
      {
        if ( field.second.size() > 0 ) {
          track.disc_number(std::stoi(field.second[0].to8Bit()));
        }
        else {
          std::cerr << "field='" << field.first << "' string list size=" << field.second.size() << std::endl;
        }
      }
      else if ( field.first == "REPLAYGAIN_REFERENCE_LOUDNESS" )
      {
        auto ref_loudness = std::stod(field.second[0].to8Bit());
        replaygain["reference_loudness"] = ref_loudness;
      }
      else if ( field.first == "REPLAYGAIN_TRACK_GAIN" )
      {
        auto gain = std::stod(field.second[0].to8Bit());
        replaygain["track_gain"] = gain;
      }
    }

    if ( !replaygain.empty() ) {
      source["replaygain"] = replaygain;
    }
  }

  const TagLib::List<TagLib::FLAC::Picture*>& images = file.pictureList();

  if ( images.size() > 0 )
  {
//.........这里部分代码省略.........