Function encode 

pub fn encode(message: &[u8], parity: u8) -> Result<Buffer, EncodeError>

Encodes a message by adding an error-correcting code.

Messages longer than 255 - 2 * parity bytes are encoded in the long ECC format; all other messages become a single Reed-Solomon codeword.

Errors

For messages that fit a single codeword:

• RSConstructorError is returned if parity exceeds crate::MAX_PARITY.
• RSEncodeError is returned if encoding fails.

For longer messages:

• LongEccEncodeError is returned if long encoding fails.