Function parse_form 

pub fn parse_form(data: &[u8]) -> Result<Form<'_>, IffError>

Parse a DjVu IFF byte stream into a Form.

This is the new spec-based zero-copy parser. It returns borrowed data from the input slice.

Errors

Returns IffError if:

• The data does not begin with the AT&T magic bytes
• The FORM chunk header is missing or malformed
• Any chunk extends beyond the available data