Ejemplo n.º 1
0
// extractID3 attempts to extract MusicBrainz Picard tags from m.Raw(), where m.Format
// is assumed to be a supported version of ID3.
func extractID3(m tag.Metadata) Info {
	var txxx, ufid string
	switch m.Format() {
	case tag.ID3v2_2:
		txxx, ufid = "TXX", "UFI"
	case tag.ID3v2_3, tag.ID3v2_4:
		txxx, ufid = "TXXX", "UFID"
	}

	i := Info{}
	for k, v := range m.Raw() {
		switch {
		case strings.HasPrefix(k, txxx):
			if str, ok := v.(*tag.Comm); ok {
				i.set(str.Description, str.Text)
			}
		case strings.HasPrefix(k, ufid):
			if id, ok := v.(*tag.UFID); ok {
				if id.Provider == UFIDProviderURL {
					i.set(Recording, string(id.Identifier))
				}
			}
		}
	}
	return i
}
Ejemplo n.º 2
0
// extractMP4Vorbis attempts to extract MusicBrainz Picard tags from m.Raw(), where m.Format
// is assumed to be MP4 or VORBIS.
func extractMP4Vorbis(m tag.Metadata) Info {
	i := Info{}
	for t, v := range m.Raw() {
		if s, ok := v.(string); ok {
			i.set(t, s)
		}
	}
	return i
}