Crate timestretch 

timestretch time/pitch processing through one host-driven session.

use timestretch::{render, Backend, Parameters, SessionConfig, TempoRate};
let config = SessionConfig {
    channels: 1,
    backend: Backend::Portable,
    parameters: Parameters::keylock(TempoRate::new(0.75)?),
    ..SessionConfig::default()
};
let audio = render(&vec![0.0; 4410], config)?;
assert!(audio.samples.len() > 4410);

Preparation allocates. StreamSession processing is synchronous and bounded by a work quota; the host chooses its thread and scheduling policy. Offline rendering drives exactly the same adapter. Source frames, collected output, and acknowledged playback progress are distinct. See examples/realtime_stream.rs.

Re-exports

pub use error::StretchError;

Modules

error

Error types for the timestretch crate.

Structs

AppliedParameters

DurationRatio

Output time / source time, from 0.25 to 32. Inverse of TempoRate.

Epoch

OutputConsumption

OutputStamp

OwnedMemory

Heap-owned buffers and boxed states. Allocator overhead, host queues and opaque FFT plans are separate; None does not mean zero plan memory.

Parameters

PitchRatio

Frequency multiplier, from 0.25 to 4 (−24 to +24 semitones).

PreparedSession

Allocates and validates everything before a host starts processing.

ProcessReport

RenderReport

RenderedAudio

SessionConfig

SessionCounters

SourceRequest

StreamSession

Owns DSP and transport semantics. Hosts own thread scheduling and device queues.

TempoRate

Source time / output time, from 1/32 to 4. Zero speed is a transport action.

TimingInfo

TransitionEnvelope

Small reusable transition ramp. Hosts supply the last delivered frame; generation never reads DSP buffers or allocates.

Enums

Backend

ProcessStatus

RatePolicy

RatioConstraint

SessionError

SourceAccess

Transport

Functions

render

Render interleaved samples without normalization or a second DSP path.

Type Aliases

SessionResult