boatmanandYueqian Lin
32dddfcef4
Signed-off-by: boatman <109857087+sphinxkkkbc@users.noreply.github.com> Co-authored-by: Yueqian Lin <70319226+linyueqian@users.noreply.github.com>
35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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"""Step-Audio2 serving adapter."""
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from typing import TYPE_CHECKING
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from vllm_omni.entrypoints.openai.tts_adapters import register_tts_adapter
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from vllm_omni.entrypoints.openai.tts_adapters.base import ARTTSAdapter, PreparedRequest
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if TYPE_CHECKING:
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from vllm_omni.entrypoints.openai.protocol.audio import OpenAICreateSpeechRequest
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@register_tts_adapter
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class StepAudio2Adapter(ARTTSAdapter):
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"""Adapter for Step-Audio2 (AR ``engine_client`` backend).
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Step-Audio2 runs a single thinker stage that emits audio tokens after a
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``<tts_start>`` marker; prompt building is a synchronous chat-template
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construction with no uploaded-voice / ref-audio handling.
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"""
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stage_keys = frozenset({"step_audio2_thinker"})
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name = "step_audio2"
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def validate(self, request: "OpenAICreateSpeechRequest") -> str | None:
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if not request.input or not request.input.strip():
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return "Input text cannot be empty"
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return None
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async def build(
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self, request: "OpenAICreateSpeechRequest", sampling_params_list: list, has_inline_ref_audio: bool
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) -> PreparedRequest:
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prompt = self.ctx.server._build_step_audio2_prompt(request)
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return PreparedRequest(prompt=prompt, tts_params={}, model_type="step_audio2")
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