Files
hao-ai-lab-FastVideo/v2/serving/protocol.py
T
SolitaryThinker 4e331eb7ff [refactor] v2: use absolute imports (v2.*) everywhere instead of relative
Mechanical conversion of every relative import under v2/ to an absolute v2.* path
(from .x / ..x / ...x -> from v2.<pkg>.x) so imports are unambiguous, grep-able, and
stable when code is copied/moved between entrypoints (VideoGenerator, CLI, server).

Surgical prefix-only rewrite: only the 'from <dots><module>' prefix changed — import
names, parentheses, multi-line formatting, comments, and ordering are byte-for-byte
preserved (no collapsing, no reorder, no unrelated reformatting).

- 471 imports across 125 files; v2/tests/ was already absolute (untouched).
- Validated: all 125 files compile, every 'from v2.* import' target resolves to a real
  module/package, zero relative imports remain (full sweep), CPU mini suite green
  (202 passed, 2 skipped).
2026-07-04 17:15:34 +00:00

118 lines
4.6 KiB
Python

"""OpenAI-shaped request schemas (design_v3 §12; the vllm-omni protocol, framework-free).
Plain dataclasses parsed from JSON (no pydantic dep). Each translates to a typed ``OmniRequest`` at
the server boundary — "the request is the only currency crossing the product boundary" (§12).
"""
from __future__ import annotations
from dataclasses import dataclass, field
from typing import Any
from v2.request import DiffusionParams, OutputSpec, SamplingParams, TaskType, make_request
def _wh(size: str, default=(832, 480)) -> tuple[int, int]:
try:
w, h = size.lower().split("x")
return int(w), int(h)
except Exception:
return default
def _task_for(model_id: str, kind: str) -> TaskType:
m = model_id.lower()
if kind == "image":
return TaskType.T2I if ("bagel" in m or "image" in m) else TaskType.T2V
if kind == "video":
return TaskType.T2V
if kind == "chat":
if "bagel" in m:
return TaskType.T2I
if "cosmos" in m or "omni" in m:
return TaskType.T2V
return TaskType.T2V
return TaskType.T2V
@dataclass
class ImageGenerationRequest:
prompt: str
model: str
n: int = 1
size: str = "832x480"
num_inference_steps: int = 4
guidance_scale: float = 5.0
seed: int = 0
@classmethod
def from_json(cls, d: dict) -> "ImageGenerationRequest":
return cls(prompt=d.get("prompt", ""), model=d.get("model", ""), n=int(d.get("n", 1)),
size=d.get("size", "832x480"), num_inference_steps=int(d.get("num_inference_steps", 4)),
guidance_scale=float(d.get("guidance_scale", 5.0)), seed=int(d.get("seed", 0)))
def to_omni(self):
w, h = _wh(self.size)
return make_request(_task_for(self.model, "image"), self.model, self.prompt,
diffusion=DiffusionParams(num_steps=self.num_inference_steps,
guidance_scale=self.guidance_scale,
height=h, width=w, seed=self.seed))
@dataclass
class VideoGenerationRequest:
prompt: str
model: str
seconds: float = 2.0
size: str = "832x480"
num_frames: int = 81
num_inference_steps: int = 4
guidance_scale: float = 5.0
seed: int = 0
stream: dict = field(default_factory=dict)
@classmethod
def from_json(cls, d: dict) -> "VideoGenerationRequest":
return cls(prompt=d.get("prompt", ""), model=d.get("model", ""),
seconds=float(d.get("seconds", 2.0)), size=d.get("size", "832x480"),
num_frames=int(d.get("num_frames", 81)),
num_inference_steps=int(d.get("num_inference_steps", 4)),
guidance_scale=float(d.get("guidance_scale", 5.0)), seed=int(d.get("seed", 0)),
stream={"video": True} if d.get("stream") else {})
def to_omni(self):
w, h = _wh(self.size)
return make_request(TaskType.T2V, self.model, self.prompt,
diffusion=DiffusionParams(num_steps=self.num_inference_steps,
guidance_scale=self.guidance_scale, height=h, width=w,
num_frames=self.num_frames, seed=self.seed),
outputs=OutputSpec(modalities=frozenset({"video"}), stream=self.stream))
@dataclass
class ChatCompletionRequest:
model: str
messages: list[dict]
stream: bool = False
max_tokens: int = 6
num_inference_steps: int = 4
seed: int = 0
@classmethod
def from_json(cls, d: dict) -> "ChatCompletionRequest":
return cls(model=d.get("model", ""), messages=d.get("messages", []),
stream=bool(d.get("stream", False)), max_tokens=int(d.get("max_tokens", 6)),
num_inference_steps=int(d.get("num_inference_steps", 4)), seed=int(d.get("seed", 0)))
def prompt(self) -> str:
for m in reversed(self.messages):
if m.get("role") == "user":
c = m.get("content", "")
return c if isinstance(c, str) else " ".join(p.get("text", "") for p in c if isinstance(p, dict))
return ""
def to_omni(self):
return make_request(_task_for(self.model, "chat"), self.model, self.prompt(),
sampling=SamplingParams(max_tokens=self.max_tokens, seed=self.seed),
diffusion=DiffusionParams(num_steps=self.num_inference_steps, seed=self.seed),
outputs=OutputSpec(stream={"video": True} if self.stream else {}))