Struct PlaybackStarter 

pub struct PlaybackStarter { /* private fields */ }

Poll-driven CD-DA start handshake (SetMode -> Demute -> Play).

let mut starter = PlaybackStarter::new();
starter.begin(tick); // arms the cold-drive delay
// then, once per tick:
if starter.tick(tick, track) {
    // playback accepted this tick; e.g. clock.start(tick)
}

Implementations

impl PlaybackStarter

pub const fn new() -> Self

A starter in the Done state; call PlaybackStarter::begin to arm it.

pub const fn with_spins(self, spins: u32) -> Self

Override the per-command spin budget (emulators answer instantly; silicon wants the default).

pub const fn with_retry_ticks(self, ticks: u32) -> Self

Override the delay after a rejected command. Successful steps retain their two-tick controller settling gap.

pub fn begin_after(&mut self, now_tick: u32, delay: u32)

Arm with an explicit initial delay (zero for an already warm drive).

pub fn begin(&mut self, now_tick: u32)

Arm the handshake: first command fires COLD_DRIVE_DELAY_TICKS after now_tick.

pub fn has_started(&self) -> bool

Whether Play has been accepted (the handshake is finished).

pub fn step_code(&self) -> u8

Which handshake step is pending, for on-screen diagnostics: 0 SetMode, 1 Demute, 2 Play, 3 Done. Note that Done means Play was ACCEPTED, not that the head has arrived; the drive may still be seeking when this reads 3.

pub fn tick_on(&mut self, cd: &mut Cd, now_tick: u32, track: u8) -> bool

Drive one attempt if due, issuing its command through cd. Returns true exactly once, on the tick the Play command is accepted. Safe to keep calling afterwards (no-op).

impl PlaybackStarter

pub fn tick(&mut self, now_tick: u32, track: u8) -> bool

👎Deprecated:

use tick_on with the Cd token

tick_on on a token the caller does not hold.

pub fn started(&self) -> bool

👎Deprecated:

renamed to has_started

Renamed to Self::has_started.

Trait Implementations

impl Clone for PlaybackStarter

fn clone(&self) -> PlaybackStarter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlaybackStarter

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

Formats the value using the given formatter.

impl Default for PlaybackStarter

fn default() -> Self

Returns the “default value” for a type.

impl Copy for PlaybackStarter