Files
hao-ai-lab-FastVideo/v2/models/wan_causal/program.py
T
SolitaryThinker a9e5f6ee7a [refactor] rename package mini_fastvideo → v2
Directory rename (git mv, history preserved) plus rewrite of all references: absolute imports in
tests, the zero-dep runner, docstrings, comments, and the README. No behavior change.

Run: python3 -m pytest v2/tests/ -q ; python3 v2/run_tests.py ; python3 -m v2.examples
2026-07-04 17:15:34 +00:00

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Python

"""Wan-causal streaming program: text_encode → chunk_rollout → vae_decode (design_v3 §4, §15e)."""
from __future__ import annotations
from ...program import ComponentNode, ModelLoopNode, Program, ProgramKind
from ..common import text_encode_node_fn as _text_encode
def _vae_decode(instance, slots, request, ctx) -> None:
latents = slots["rollout_out"]["latents"]
slots["video"] = instance.component("vae").decode(latents) if latents is not None else None
def build_wan_causal_program() -> Program:
return Program(
program_id="wan_causal.stream", kind=ProgramKind.INLINE,
nodes=[
ComponentNode("text_encode", fn=_text_encode, writes=("text_embeds", "neg_text_embeds")),
ModelLoopNode("rollout", loop_id="chunk_rollout", output_slot="rollout_out",
reads=("text_embeds",), writes=("rollout_out",)),
ComponentNode("vae_decode", fn=_vae_decode, reads=("rollout_out",), writes=("video",)),
],
output_artifacts={"video": "video", "latents": "rollout_out"},
).validate()