/// <summary>
/// Renders the current instance as a raw ID3v2 header.
/// </summary>
/// <returns>
/// A <see cref="ByteVector" /> object containing the
/// rendered header.
/// </returns>
public ByteVector Render()
{
ByteVector v = new ByteVector();
v.Add(FileIdentifier);
v.Add(MajorVersion);
v.Add(RevisionNumber);
v.Add((byte)flags);
v.Add(SynchData.FromUInt(TagSize));
return(v);
}
/// <summary>
/// Renders the current instance, encoded in a specified
/// ID3v2 version.
/// </summary>
/// <param name="version">
/// A <see cref="byte" /> value specifying the version of
/// ID3v2 to use when encoding the current instance.
/// </param>
/// <returns>
/// A <see cref="ByteVector" /> object containing the
/// rendered version of the current instance.
/// </returns>
/// <exception cref="NotImplementedException">
/// The version specified in the current instance is
/// unsupported.
/// </exception>
public ByteVector Render(byte version)
{
ByteVector data = new ByteVector();
ByteVector id = ConvertId(frame_id, version, true);
if (id == null)
{
throw new NotImplementedException();
}
switch (version)
{
case 2:
data.Add(id);
data.Add(ByteVector.FromUInt(frame_size)
.Mid(1, 3));
return(data);
case 3:
ushort new_flags = (ushort)(
(((ushort)flags << 1) & 0xE000) |
(((ushort)flags << 4) & 0x00C0) |
(((ushort)flags >> 1) & 0x0020));
data.Add(id);
data.Add(ByteVector.FromUInt(frame_size));
data.Add(ByteVector.FromUShort(new_flags));
return(data);
case 4:
data.Add(id);
data.Add(SynchData.FromUInt(frame_size));
data.Add(ByteVector.FromUShort((ushort)flags));
return(data);
default:
throw new NotImplementedException(
"Unsupported tag version.");
}
}
