Struct LanguageCode 

pub struct LanguageCode {
    pub raw: u16,
}

Two-byte ASCII language / country code packed into a single u16 register slot — the high byte is the first character, the low byte the second character, per the SPRM 0 / 12 / 16 / 18 layout on docs/container/dvd/application/mpucoder-sprm.html. The 0xFFFF value spelled out in the SPRM 16 / 18 default column is the spec page’s “not specified” sentinel.

Fields

raw: u16

The original SPRM word — exposed so a caller can round-trip the slot bit-for-bit including the 0xFFFF sentinel.

Implementations

impl LanguageCode

pub const NOT_SPECIFIED: u16 = 0xFFFF

0xFFFF — the SPRM 16 / 18 default “preferred language not specified” sentinel.

pub fn from_raw(raw: u16) -> Self

Wrap a raw 16-bit SPRM slot.

pub fn is_not_specified(self) -> bool

true when the slot encodes the 0xFFFF “not specified” sentinel used by the SPRM 16 / 18 defaults.

pub fn ascii_bytes(self) -> Option<[u8; 2]>

Return the two-byte ASCII code as a [u8; 2] when the slot carries one (i.e. is not the 0xFFFF sentinel and both bytes are printable ASCII letters per ISO 639 / ISO 3166). Returns None otherwise — including the “player specific” default for SPRM 0 / 12 (which has no on-wire representation; the spec leaves the slot uninitialised).

pub fn as_string(self) -> Option<String>

Return the code as a 2-character String, lowercased per ISO 639 / ISO 3166 alpha-2 convention. None when no valid ASCII code is present.

Trait Implementations

impl Clone for LanguageCode

fn clone(&self) -> LanguageCode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for LanguageCode

impl Debug for LanguageCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for LanguageCode

impl PartialEq for LanguageCode

fn eq(&self, other: &LanguageCode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for LanguageCode