public static ID3v1Tag FromV2Tag(TagBase tag, IGenreManager genreManager)
{
if (tag == null)
{
throw new ArgumentNullException("tag", "Argument 'tag' can not be null.");
}
ID3v1Tag information = new ID3v1Tag();
Frames.AlbumTextFrame album = tag.SearchForFrame(typeof(Frames.AlbumTextFrame)) as Frames.AlbumTextFrame;
Frames.ArtistTextFrame artist = tag.SearchForFrame(typeof(Frames.ArtistTextFrame)) as Frames.ArtistTextFrame;
Frames.CommentExtendedTextFrame comment = tag.SearchForFrame(typeof(Frames.CommentExtendedTextFrame)) as Frames.CommentExtendedTextFrame;
Frames.GenreTextFrame genre = tag.SearchForFrame(typeof(Frames.GenreTextFrame)) as Frames.GenreTextFrame;
Frames.ReleaseTimeTextFrame releaseTime = tag.SearchForFrame(typeof(Frames.ReleaseTimeTextFrame)) as Frames.ReleaseTimeTextFrame;
Frames.TitleTextFrame title = tag.SearchForFrame(typeof(Frames.TitleTextFrame)) as Frames.TitleTextFrame;
Frames.TrackTextFrame track = tag.SearchForFrame(typeof(Frames.TrackTextFrame)) as Frames.TrackTextFrame;
Frames.YearTextFrame year = tag.SearchForFrame(typeof(Frames.YearTextFrame)) as Frames.YearTextFrame;
if (album != null)
{
information.Album = album.Text;
}
if (artist != null)
{
information.Artist = album.Text;
}
if (comment != null)
{
information.Comment = album.Text;
}
if (genre != null)
{
information.GenreCode = genreManager.GetGenreCode(genre.Text);
}
if (releaseTime != null)
{
information.Year = releaseTime.Text.Substring(0, 4);
}
else if (year != null)
{
information.Year = year.Text;
}
if (track != null)
{
information.TrackNumber = (byte)track.TrackNumber;
}
if (title != null)
{
information.Title = title.Text;
}
return(information);
}
/// <summary>
/// Writes the information provided in the TagInformation object
/// to the given FileStream in ID3v1.1 format.
/// </summary>
/// <param name="stream">The FileStream that can read and write to the file. Must also support seeking.</param>
/// <param name="tag">The TagInformation object containing the tag information. </param>
private void WriteToFile(FileStream stream)
{
if (!(stream.CanRead && stream.CanSeek && stream.CanSeek))
{
throw (new ArgumentException("The passed Stream object must support seeking, reading and writing."));
}
ID3v1Tag tagInformation = new ID3v1Tag();
if (!tagInformation.ReadFromFile(stream))
{
stream.Seek(stream.Length, SeekOrigin.Begin);
}
else
{
stream.Seek(stream.Length - 128, SeekOrigin.Begin);
}
stream.Write(Encoding.GetEncoding("ISO-8859-1").GetBytes("TAG"), 0, 3);
byte[] b = new byte[0];
if (Title != "")
{
b = Encoding.GetEncoding("ISO-8859-1").GetBytes(Title);
}
for (int i = 0; i < 30; i++)
{
if (i < b.Length)
{
stream.WriteByte(b[i]);
}
else
{
stream.WriteByte(0);
}
}
b = new byte[0];
if (Artist != "")
{
b = Encoding.GetEncoding("ISO-8859-1").GetBytes(Artist);
}
for (int i = 0; i < 30; i++)
{
if (i < b.Length)
{
stream.WriteByte(b[i]);
}
else
{
stream.WriteByte(0);
}
}
b = new byte[0];
if (Album != "")
{
b = Encoding.GetEncoding("ISO-8859-1").GetBytes(Album);
}
for (int i = 0; i < 30; i++)
{
if (i < b.Length)
{
stream.WriteByte(b[i]);
}
else
{
stream.WriteByte(0);
}
}
b = new byte[0];
if (Year != "")
{
b = Encoding.GetEncoding("ISO-8859-1").GetBytes(Year);
}
for (int i = 0; i < 4; i++)
{
if (i < b.Length)
{
stream.WriteByte(b[i]);
}
else
{
stream.WriteByte(0);
}
}
b = new byte[0];
if (Comment != "")
{
b = Encoding.GetEncoding("ISO-8859-1").GetBytes(Comment);
}
for (int i = 0; i < 28; i++)
{
if (i < b.Length)
{
stream.WriteByte(b[i]);
}
else
{
stream.WriteByte(0);
}
}
stream.WriteByte(0);
stream.WriteByte(TrackNumber);
stream.WriteByte(GenreCode);
}