DiffusionScheduler class

Scheduler / sampler algorithm — forward-looking union.

Pre-IDL sources all expose the same eight cases (DPM++ 2M Karras, DPM++ 2M, DPM++ 2M SDE, DDIM, Euler, Euler Ancestral, PNDM, LMS); see: Swift DiffusionTypes.swift:184 (.dpmPP2MKarras .. .lms) Kotlin DiffusionTypes.kt:155 (DPM_PP_2M_KARRAS .. LMS) RN DiffusionTypes.ts:48 (DPMPP2MKarras .. LMS) Web DiffusionTypes.ts:3 (numeric DPM_PP_2M_Karras .. LMS, matches C ABI) C ABI rac_diffusion_types.h:31 (RAC_DIFFUSION_SCHEDULER_*)

This proto enum extends that with two values that downstream backends are expected to grow into but no SDK exposes yet:

  • DDPM — original Ho et al. 2020 sampler
  • LCM — Latent Consistency Model sampler (paired with the LCM model variant; today Swift/Kotlin reuse DPM++ 2M Karras for LCM models because no LCM scheduler case exists). And it intentionally omits DPMPP_2M_SDE, which exists in every SDK today but is being collapsed back into DPMPP_2M for the v1 IDL surface (the SDE variant is purely an algorithmic toggle on DPM++ 2M; backends accept either tag).

Drift reconciliation:

  • Swift/Kotlin/RN/Web/C-ABI carriers of DPMPP_2M_SDE must round-trip that case to DIFFUSION_SCHEDULER_DPMPP_2M (lossy in name, equivalent in semantics — the SDE flag is a backend implementation detail).
  • DDPM and LCM are new slots; SDKs that don't yet recognize them must fall back to DIFFUSION_SCHEDULER_DPMPP_2M_KARRAS (the recommended default).

Properties

hashCode → int
The hash code for this object.
no setterinherited
name → String
This enum's name, as specified in the .proto file.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → int
This enum's integer value, as specified in the .proto file.
finalinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
Returns this enum's name or the value if names are not represented.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

valueOf(int value) → DiffusionScheduler?