public bool Read(Id3Tag tag, Stream mp3Stream)
{
//Check wether the file contains an Id3v1 tag--------------------------------
mp3Stream.Seek( -128 , SeekOrigin.End);
byte[] b = new byte[3];
mp3Stream.Read( b, 0, 3 );
mp3Stream.Seek(0, SeekOrigin.Begin);
string tagS = Encoding.ASCII.GetString(b);
if(tagS != "TAG")
return false;
mp3Stream.Seek( - 128 + 3, SeekOrigin.End );
//Parse the tag -)------------------------------------------------
tag.AddTitle(Read(mp3Stream, 30));
tag.AddArtist(Read(mp3Stream, 30));
tag.AddAlbum(Read(mp3Stream, 30));
//------------------------------------------------
tag.AddYear(Read(mp3Stream, 4));
tag.AddComment(Read(mp3Stream, 30));
//string trackNumber;
mp3Stream.Seek(- 2, SeekOrigin.Current);
b = new byte[2];
mp3Stream.Read(b, 0, 2);
if (b[0] == 0)
tag.AddTrack(b[1].ToString());
byte genreByte = (byte) mp3Stream.ReadByte();
mp3Stream.Seek(0, SeekOrigin.Begin);
tag.AddGenre(TagGenres.Get(genreByte));
return true;
}
private void AddId3Frame(Id3Tag tag, string field, byte[] b, byte version)
{
if (version == Id3Tag.ID3V22)
{
field = ConvertFromId3v22(field);
}
if (field == "" || field.Length < 4)
{
return;
}
//FIXME: We do not support non-text frames yet.
if (field != "COMM" && (field[0] != 'T' || field[1] == 'X'))
{
return;
}
if (field == "COMM")
{
TextId3Frame f = new CommId3Frame(b, version);
tag.AddComment(f.Content);
}
else if (field[0] == 'T' && field[1] != 'X')
{
/*
* FIXME: Add support for: they have a special format
* if (field.equalsIgnoreCase("TDRC")) {
* return new TimeId3Frame(field, data, version);
* }
* return new TextId3Frame(field, data, version);
*/
TextId3Frame f = new TextId3Frame(field, b, version);
switch (field)
{
case "TCON": // genre
tag.AddGenre(TranslateGenre(f.Content));
break;
case "TRCK": // track number
string num, count;
Utils.SplitTrackNumber(f.Content, out num, out count);
if (num != null)
{
tag.AddTrack(num);
}
if (count != null)
{
tag.AddTrackCount(count);
}
break;
default:
tag.Add(field, f.Content);
break;
}
}
}
public bool Read(Id3Tag tag, Stream mp3Stream)
{
//Check wether the file contains an Id3v1 tag--------------------------------
mp3Stream.Seek(-128, SeekOrigin.End);
byte[] b = new byte[3];
mp3Stream.Read(b, 0, 3);
mp3Stream.Seek(0, SeekOrigin.Begin);
string tagS = Encoding.ASCII.GetString(b);
if (tagS != "TAG")
{
return(false);
}
mp3Stream.Seek(-128 + 3, SeekOrigin.End);
//Parse the tag -)------------------------------------------------
tag.AddTitle(Read(mp3Stream, 30));
tag.AddArtist(Read(mp3Stream, 30));
tag.AddAlbum(Read(mp3Stream, 30));
//------------------------------------------------
tag.AddYear(Read(mp3Stream, 4));
tag.AddComment(Read(mp3Stream, 30));
//string trackNumber;
mp3Stream.Seek(-2, SeekOrigin.Current);
b = new byte[2];
mp3Stream.Read(b, 0, 2);
if (b[0] == 0)
{
tag.AddTrack(b[1].ToString());
}
byte genreByte = (byte)mp3Stream.ReadByte();
mp3Stream.Seek(0, SeekOrigin.Begin);
tag.AddGenre(TagGenres.Get(genreByte));
return(true);
}
private void AddId3Frame(Id3Tag tag, string field, byte[] b, byte version) {
if(version == Id3Tag.ID3V22)
field = ConvertFromId3v22(field);
if (field == "" || field.Length < 4)
return;
//FIXME: We do not support non-text frames yet.
if (field != "COMM" && (field[0] != 'T' || field[1] == 'X'))
return;
if (field == "COMM") {
TextId3Frame f = new CommId3Frame(b, version);
tag.AddComment(f.Content);
} else if (field[0] == 'T' && field[1] != 'X') {
/*
FIXME: Add support for: they have a special format
if (field.equalsIgnoreCase("TDRC")) {
return new TimeId3Frame(field, data, version);
}
return new TextId3Frame(field, data, version);
*/
TextId3Frame f = new TextId3Frame(field, b, version);
switch (field) {
case "TCON": // genre
tag.AddGenre(TranslateGenre(f.Content));
break;
case "TRCK": // track number
string num, count;
Utils.SplitTrackNumber(f.Content, out num, out count);
if (num != null)
tag.AddTrack(num);
if (count != null)
tag.AddTrackCount(count);
break;
default:
tag.Add(field, f.Content);
break;
}
}
}
