Struct NtpClock 

pub struct NtpClock { /* private fields */ }

A ClockSource anchored to the host wall clock (NTP fallback).

On construction, sample index 0 is anchored to the current wall-clock time. The anchor may be moved later with NtpClock::reanchor (e.g. when an audio device reports its actual start time) and inspected with NtpClock::anchor.

Implementations

impl NtpClock

pub fn new(sample_rate: u32) -> Result<Self>

Creates a clock anchored at sample 0 to the current wall-clock time.

Errors

• ClockError::InvalidSampleRate when sample_rate == 0.
• ClockError::NotSynced when the system clock is before the epoch.

pub fn with_anchor(anchor: ClockAnchor) -> Self

Creates a clock over a pre-built anchor (e.g. restored from a session).

pub fn anchor(&self) -> ClockAnchor

Returns the current anchor.

pub fn reanchor(&mut self, ref_sample: i64) -> Result<()>

Re-anchors so that ref_sample maps to the current wall-clock time.

Useful when an audio device reports the actual start sample after open.

Errors

• ClockError::NotSynced when the system clock is before the epoch.

Trait Implementations

impl ClockSource for NtpClock

fn ptp_now_ns(&self) -> Result<i64>

Returns the current PTP timestamp in nanoseconds since the epoch.

fn sample_to_ptp(&self, sample_idx: i64) -> i64

Converts a sample index to a PTP timestamp in nanoseconds.

fn ptp_to_sample(&self, ptp_ns: i64) -> i64

Converts a PTP timestamp in nanoseconds to a sample index.

impl Debug for NtpClock

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

Formats the value using the given formatter.