Struct PlayContext 

pub struct PlayContext {
    pub transport: Symbol,
    pub tempo: TempoMapRef,
    pub sample_rate: u32,
    pub ppq: u32,
    pub range: TimeRange,
    pub seed: u64,
    pub capabilities: Vec<String>,
    pub site: SiteHint,
    pub upstream: Vec<PlayEvent>,
}

Rendering context handed to a Playable during prepare/render/freeze.

Carries the transport identity, tempo map, clock resolution, time window, and any upstream events that a render run depends on.

Fields

transport: Symbol

Symbol identifying the transport that drives this render.

tempo: TempoMapRef

Reference to the tempo map used to relate musical and wall-clock time.

sample_rate: u32

Audio sample rate in hertz.

ppq: u32

Pulses (ticks) per quarter note for tick-domain conversion.

range: TimeRange

Time window the render is clipped to.

seed: u64

Deterministic seed for any randomized rendering.

capabilities: Vec<String>

Capability tokens the render site advertises.

site: SiteHint

Hint describing where the render is expected to execute.

upstream: Vec<PlayEvent>

Events fed in from upstream stages of a chain.

Implementations

impl PlayContext

pub fn new(range: TimeRange) -> Self

Creates a context over range with offline transport defaults.

pub fn stream_metadata( &self, id: Symbol, item_count: usize, ) -> Result<StreamMetadata>

Builds stream metadata for a source stream of item_count data items.

Trait Implementations

impl Clone for PlayContext

fn clone(&self) -> PlayContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlayContext

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

Formats the value using the given formatter.

impl Eq for PlayContext

impl PartialEq for PlayContext

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PlayContext