Enum DataUnitId 

#[non_exhaustive]
pub enum DataUnitId {
    EbuTeletextNonSubtitle,
    EbuTeletextSubtitle,
    InvertedTeletext,
    Vps,
    Wss,
    ClosedCaptioning,
    Monochrome422Samples,
    Stuffing,
    Reserved(u8),
    UserDefined(u8),
}

A decoded data_unit_id (ETSI EN 301 775 §4.4.2, Table 3).

The named variants carry the typed payloads this crate decodes; everything else falls into DataUnitId::Reserved or DataUnitId::UserDefined, preserving the raw byte. Per Table 3 the spec action for the latter two is “discard”.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EbuTeletextNonSubtitle

0x02 — EBU Teletext non-subtitle data.

EbuTeletextSubtitle

0x03 — EBU Teletext subtitle data.

InvertedTeletext

0xC0 — Inverted Teletext.

Vps

0xC3 — VPS (Video Programme System).

Wss

0xC4 — WSS (Wide Screen Signalling).

ClosedCaptioning

0xC5 — Closed Captioning (line 21, EIA-608 Rev A).

Monochrome422Samples

0xC6 — monochrome 4:2:2 luminance samples.

Stuffing

0xFF — stuffing (no data field).

Reserved(u8)

0x00–0x01, 0x04–0x7F, 0xC1, 0xC2, 0xC7–0xFE — reserved for future use (Table 3: discard). Carries the raw data_unit_id.

UserDefined(u8)

0x80–0xBF — user defined (Table 3: discard). Carries the raw data_unit_id.

Implementations

impl DataUnitId

pub fn from_u8(raw: u8) -> Self

Decode a raw 8-bit data_unit_id per Table 3.

pub fn to_u8(self) -> u8

Encode back to the raw 8-bit wire value.

pub fn name(&self) -> &'static str

Spec label for this data_unit_id (Table 3).

Trait Implementations

impl Clone for DataUnitId

fn clone(&self) -> DataUnitId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DataUnitId

impl Debug for DataUnitId

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

Formats the value using the given formatter.

impl Display for DataUnitId

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

Formats the value using the given formatter.

impl Eq for DataUnitId

impl Hash for DataUnitId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DataUnitId

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for DataUnitId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for DataUnitId