Constant WIRE_HEADER_SIZE 

pub const WIRE_HEADER_SIZE: usize = 59;

Header size: magic(4) + version(1) + ambient_dim(4) + block_dim(4)

• codebook_size(4) + rotation_seed(8) + wire_index_bits(1) + norm_format(1)
• profile_digest(32) = 59 bytes.