/// <summary>
/// Loads the metadata for this file.
/// </summary>
public void Load()
{
IntPtr fileHandle = NativeMethods.MP4Read(this.fileName);
if (fileHandle != IntPtr.Zero)
{
try
{
this.metadataTags = MetadataTags.ReadFromFile(fileHandle);
this.chapters = ChapterList.ReadFromFile(fileHandle);
}
finally
{
NativeMethods.MP4Close(fileHandle);
}
}
}
/// <summary>
/// Reads the tags from the specified file.
/// </summary>
/// <param name="fileHandle">The handle to the file from which to read the tags.</param>
/// <returns>A new instance of a <see cref="MetadataTags"/> object containing the values
/// in the metadata tags for the file.</returns>
internal static MetadataTags ReadFromFile(IntPtr fileHandle)
{
IntPtr tagPtr = NativeMethods.MP4TagsAlloc();
NativeMethods.MP4TagsFetch(tagPtr, fileHandle);
NativeMethods.MP4Tags tags = tagPtr.ReadStructure <NativeMethods.MP4Tags>();
MetadataTags managedTags = new MetadataTags();
managedTags.Title = tags.name;
managedTags.Artist = tags.artist;
managedTags.AlbumArtist = tags.albumArtist;
managedTags.Album = tags.album;
managedTags.Grouping = tags.grouping;
managedTags.Composer = tags.composer;
managedTags.Comment = tags.comment;
managedTags.Genre = tags.genre;
managedTags.ReadTrackInfo(tags.track);
managedTags.ReadDiskInfo(tags.disk);
managedTags.Tempo = tags.tempo.ReadShort();
managedTags.IsCompilation = tags.compilation.ReadBoolean();
managedTags.Copyright = tags.copyright;
managedTags.EncodingTool = tags.encodingTool;
managedTags.EncodedBy = tags.encodedBy;
// Tags specific to TV Episodes.
managedTags.EpisodeNumber = tags.tvEpisode.ReadInt();
managedTags.SeasonNumber = tags.tvSeason.ReadInt();
managedTags.EpisodeId = tags.tvEpisodeID;
managedTags.TVNetwork = tags.tvNetwork;
managedTags.TVShow = tags.tvShow;
managedTags.Description = tags.description;
managedTags.LongDescription = tags.longDescription;
managedTags.Lyrics = tags.lyrics;
managedTags.SortName = tags.sortName;
managedTags.SortArtist = tags.sortArtist;
managedTags.SortAlbumArtist = tags.sortAlbumArtist;
managedTags.SortAlbum = tags.sortAlbum;
managedTags.SortComposer = tags.sortComposer;
managedTags.SortTVShow = tags.sortTVShow;
managedTags.ArtworkCount = tags.artworkCount;
managedTags.ReadArtwork(tags.artwork);
managedTags.IsPodcast = tags.podcast.ReadBoolean();
managedTags.Keywords = tags.keywords;
managedTags.Category = tags.category;
managedTags.IsHDVideo = tags.hdVideo.ReadEnumValue <HDKind>(HDKind.SD);
managedTags.MediaType = tags.mediaType.ReadEnumValue <MediaKind>(MediaKind.NotSet);
managedTags.ContentRating = tags.contentRating.ReadEnumValue <ContentRating>(ContentRating.NotSet);
managedTags.IsGapless = tags.gapless.ReadBoolean();
managedTags.MediaStoreAccount = tags.itunesAccount;
managedTags.MediaStoreCountry = tags.iTunesCountry.ReadEnumValue <Country>(Country.None);
managedTags.MediaStoreAccountType = tags.iTunesAccountType.ReadEnumValue <MediaStoreAccountKind>(MediaStoreAccountKind.NotSet);
managedTags.ContentId = tags.contentID.ReadInt();
managedTags.ArtistId = tags.artistID.ReadInt();
managedTags.PlaylistId = tags.playlistID.ReadInt();
managedTags.GenreId = tags.genreID.ReadInt();
managedTags.ComposerId = tags.composerID.ReadInt();
managedTags.Xid = tags.xid;
NativeMethods.MP4TagsFree(tagPtr);
managedTags.RatingInfo = ReadRawAtom <RatingInfo>(fileHandle);
managedTags.MovieInfo = ReadRawAtom <MovieInfo>(fileHandle);
return(managedTags);
}
