public static async Task <Tag> FromStream(Stream stream, int tagLength)
{
var newTag = new Tag();
while (stream.Position < tagLength && stream.ReadByte() != 0x00)
{
stream.Seek(-1, SeekOrigin.Current);
Frame23Header frameHeader = Frame23Header.FromStream(stream);
Frame tag = GetFrame(frameHeader.Id);
if (tag != null)
{
await tag.FromStreamAsync(stream, frameHeader.Size, TagVersion.V23).ConfigureAwait(false);
newTag.Frames.Add(tag);
}
else
{
Debug.WriteLine($"Unable to read {frameHeader.Id} tag. Skipping it.");
stream.Seek(frameHeader.Size, SeekOrigin.Current);
}
}
return(newTag);
}
public static Frame23Header FromStream(Stream stream)
{
var frameHeader = ArrayPool <byte> .Shared.Rent(10);
stream.Read(frameHeader, 0, 10);
var header = new Frame23Header();
header.Id = frameHeader.ReadUInt32(0);
header.Size = frameHeader.ReadUInt32(4);
header.TagAlterPreservation = ((frameHeader[8] & 0x80) == 0x80);
header.FileAlterPreservation = ((frameHeader[8] & 0x40) == 0x40);
header.ReadOnly = ((frameHeader[8] & 0x10) == 0x10);
header.Compression = ((frameHeader[9] & 0x80) == 0x80);
header.Encryption = ((frameHeader[9] & 0x40) == 0x40);
header.GroupingIdentity = ((frameHeader[9] & 0x20) == 0x20);
ArrayPool <byte> .Shared.Return(frameHeader);
return(header);
}
