Enum Bandwidth 

#[non_exhaustive]
#[repr(u8)]
pub enum Bandwidth {
    Mhz1_7 = 0,
    Mhz5 = 1,
    Mhz6 = 2,
    Mhz7 = 3,
    Mhz8 = 4,
    Mhz10 = 5,
}

Bandwidth per §5.2.7 Table 3.

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.

Mhz1_7 = 0

1.7 MHz bandwidth.

Mhz5 = 1

5 MHz bandwidth.

Mhz6 = 2

6 MHz bandwidth.

Mhz7 = 3

7 MHz bandwidth.

Mhz8 = 4

8 MHz bandwidth.

Mhz10 = 5

10 MHz bandwidth.

Implementations

impl Bandwidth

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

Human-readable spec label (ETSI TS 102 773 Table 3).

impl Bandwidth

pub fn t_sub(self) -> (u32, u32)

Return the elementary period Tsub as a rational (numerator, denominator) in nanoseconds, exact and without floating-point.

ETSI TS 102 773 §5.2.7 Table 4 gives Tsub = 1/D µs (where D is the bandwidth-dependent denominator), so in nanoseconds: Tsub = 1000/D ns.

The returned value (numer, denom) satisfies Tsub_ns = numer / denom. The fraction is not reduced (numer is always 1000, denom is D), so callers can multiply subseconds × 1000 and divide by denom to get the total subsecond nanoseconds without any floating-point.

Example

use dvb_t2mi::payload::timestamp::Bandwidth;

// 8 MHz: Tsub = 1/64 µs = 1000/64 ns.
let (n, d) = Bandwidth::Mhz8.t_sub();
assert_eq!((n, d), (1000, 64));
// subseconds = 32_000_000 → total nanos = 32_000_000 × 1000 / 64 = 500_000_000 ns = 0.5 s.
let nanos = 32_000_000u128 * u128::from(n) / u128::from(d);
assert_eq!(nanos, 500_000_000);

pub fn subseconds_per_second(self) -> u64

Return the number of subsecond ticks per second for this bandwidth.

Equals D × 1_000_000, where D is the denominator from ETSI TS 102 773 §5.2.7 Table 4 (Tsub = 1/D µs).

Trait Implementations

impl Clone for Bandwidth

fn clone(&self) -> Bandwidth

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Bandwidth

impl Debug for Bandwidth

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

Formats the value using the given formatter.

impl Display for Bandwidth

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

Formats the value using the given formatter.

impl Eq for Bandwidth

impl From<Bandwidth> for u8

fn from(bw: Bandwidth) -> Self

Converts to this type from the input type.

impl PartialEq for Bandwidth

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Bandwidth

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 Bandwidth

impl TryFrom<u8> for Bandwidth

type Error = TryFromPrimitiveError<Bandwidth>

The type returned in the event of a conversion error.

fn try_from(number: u8) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for Bandwidth

const NAME: &'static str = "Bandwidth"

type Primitive = u8

type Error = TryFromPrimitiveError<Bandwidth>

fn try_from_primitive( number: Self::Primitive, ) -> Result<Self, TryFromPrimitiveError<Self>>