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vllm-omni/tests/e2e/offline_inference/test_moss_tts_v1_5.py
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Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
"""E2E offline inference test for MOSS-TTS-v1.5 (MossTTSDelay-8B).
MOSS-TTS-v1.5 is a continued-training upgrade of MOSS-TTS 1.0 with the SAME
``MossTTSDelay`` architecture and API, so it reuses the existing talker/codec
path unchanged — this test just pins that the 8B v1.5 checkpoint loads and
produces audio.
The model is 8B, so this lives in its own file (one module-scoped engine per
file, per skill invariant I4) and is gated behind an 80 GB GPU; the small-GPU
MossTTSDelay coverage stays in ``test_moss_tts.py`` (1.7B VoiceGenerator).
"""
from __future__ import annotations
import os
import urllib.request
import pytest
import torch
from vllm import SamplingParams
from tests.helpers.mark import hardware_test
from vllm_omni import Omni
# H100-gated (8B). Picked up by the nightly "TTS · Function Test with H100"
# job (-m "full_model and H100 and tts"); the L4 MOSS-TTS tests land in the
# sibling L4 tts lane instead.
# TODO: Fix this test
# pytestmark = [pytest.mark.full_model, pytest.mark.tts]
SAMPLE_RATE = 24_000
REF_AUDIO_URL = "https://raw.githubusercontent.com/OpenMOSS/MOSS-TTS/main/assets/audio/reference_zh_1.wav"
_MODEL = "OpenMOSS-Team/MOSS-TTS-v1.5"
_DEFAULT_SAMPLING = SamplingParams(
temperature=1.7,
top_p=0.8,
top_k=25,
max_tokens=512, # short for tests (~20 s at 24 kHz, ~12.5 tokens/s)
seed=42,
detokenize=False,
)
@pytest.fixture(scope="session")
def ref_audio_path(tmp_path_factory) -> str:
"""Download the upstream reference clip once per session.
Set ``MOSS_TTS_SKIP_ON_NET_FAIL=1`` to skip in air-gapped environments.
"""
target = tmp_path_factory.mktemp("moss_tts_v15_ref") / "zh_1.wav"
try:
with urllib.request.urlopen(REF_AUDIO_URL, timeout=30) as resp:
target.write_bytes(resp.read())
except Exception as exc: # noqa: BLE001
msg = f"Cannot fetch reference clip {REF_AUDIO_URL}: {exc}"
if os.environ.get("MOSS_TTS_SKIP_ON_NET_FAIL"):
pytest.skip(msg)
pytest.fail(msg)
if not target.exists() or target.stat().st_size == 0:
pytest.fail(f"Reference clip empty after download: {target}")
return str(target)
@pytest.fixture(scope="module")
def v15_engine():
return Omni(model=_MODEL, stage_init_timeout=600)
def _build_request(text: str, ref_audio_path: str) -> dict:
return {
"prompt": "<|im_start|>assistant\n",
"additional_information": {
"task_type": ["voice_clone"],
"text": [text],
"mode": ["voice_clone"],
"prompt_audio_path": [ref_audio_path],
"seed": [42],
},
}
def _collect_audio(omni: Omni, request: dict) -> tuple[torch.Tensor, int]:
for stage_outputs in omni.generate(request, _DEFAULT_SAMPLING):
for req_output in stage_outputs.request_output:
mm = req_output.outputs[0].multimodal_output
assert mm is not None, "Expected non-None multimodal_output"
audio = mm.get("audio")
if audio is None:
audio = mm.get("model_outputs")
sr = mm.get("sr")
assert audio is not None, "Expected 'audio' or 'model_outputs' in multimodal_output"
if isinstance(audio, list):
audio = torch.cat(
[t.reshape(-1) for t in audio if isinstance(t, torch.Tensor) and t.numel() > 0],
dim=0,
)
assert isinstance(audio, torch.Tensor), f"Expected Tensor, got {type(audio)}"
return audio.reshape(-1).cpu(), int(sr.item()) if sr is not None else SAMPLE_RATE
raise AssertionError("No stage outputs received")
@hardware_test(res={"cuda": "H100"})
def test_moss_tts_v15_voice_clone(v15_engine, ref_audio_path):
"""MOSS-TTS-v1.5 (8B): voice_clone produces non-empty 24 kHz audio."""
req = _build_request("Hello, this is a MOSS-TTS v1.5 voice cloning test.", ref_audio_path)
audio, sr = _collect_audio(v15_engine, req)
assert sr == SAMPLE_RATE, f"Expected {SAMPLE_RATE} Hz, got {sr}"
assert audio.numel() > 0, "Audio tensor is empty"
assert not torch.all(audio == 0), "Audio is silence"