internal static void Serialize(TagModel tagModel, Stream stream)
{
// Skip the header 10 bytes for now, we will come back and write the Header
// with the correct size once have the tag size + padding
stream.Seek(10, SeekOrigin.Begin);
// Write the frames in binary format
using (var writer = new TagWriter(stream))
foreach (var frame in tagModel.Frames)
{
#if NETSTANDARD2_0
writer.Write(frame.FrameId.ToCharArray());
#else
writer.Write(frame.FrameId.AsSpan());
#endif
// Skip the size bytes for now
var sizeIndex = stream.Position;
stream.Seek(4, SeekOrigin.Current);
// Set the FileAlter flag, if requested
writer.Write((short)(frame.FileAlter ? tagModel.Header.Version == 4 ? 0b0010_0000 : 0b0100_0000 : 0));
frame.Write(stream);
var frameSize = (uint)(stream.Position - sizeIndex - 6);
// Now update the size
stream.Seek(sizeIndex, SeekOrigin.Begin);
if (tagModel.Header.Version == 4)
{
writer.WriteSyncSafe(frameSize);
}
else
{
writer.WriteBigEndian(frameSize);
}
stream.Seek(2 + frameSize, SeekOrigin.Current);
}
// update the TagSize stored in the tagModel
var id3TagSize = (uint)stream.Position - 10;
tagModel.Header.TagSize = id3TagSize;
// Write the padding
for (var i = 0; i < tagModel.Header.PaddingSize; i++)
{
stream.WriteByte(0);
}
// Now seek back to the start and write the header
var position = stream.Position;
stream.Seek(0, SeekOrigin.Begin);
tagModel.Header.Serialize(stream);
stream.Position = position;
}
internal void Serialize(Stream stream)
{
using (var writer = new TagWriter(stream))
{
writer.Write(_id3);
writer.Write(Version);
writer.Write((byte)0);
writer.Write((byte)0);
writer.WriteSyncSafe(TagSize + PaddingSize);
}
}