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73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
"""Resolved runtime configuration for voice (TTS / STT) providers.
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These dataclasses are the read-side adapter between the model catalog
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(``services.tts`` / ``services.stt``) and the HTTP adapters. They mirror the
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shape of :class:`ResolvedEmbeddingConfig` so a single OpenAI-compatible
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adapter can cover OpenAI, Groq, SiliconFlow, OpenRouter, Azure OpenAI and
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local vLLM/LM Studio by swapping ``base_url`` + ``api_key`` + ``model``.
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"""
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from __future__ import annotations
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from dataclasses import dataclass, field
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# Auth header styles understood by the OpenAI-compatible adapter.
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AUTH_BEARER = "bearer" # Authorization: Bearer <key> (OpenAI, Groq, SiliconFlow, OpenRouter)
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AUTH_API_KEY_HEADER = "api_key_header" # api-key: <key> (Azure OpenAI)
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AUTH_TOKEN = "token" # Authorization: Token <key> (reserved for Deepgram-style)
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# STT request encodings.
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STT_MULTIPART = "multipart" # OpenAI/Groq/SiliconFlow/Azure: file upload + form fields
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STT_BASE64_JSON = "base64_json" # OpenRouter: {model, input_audio:{data,format}}
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# OpenAI caps speech input at 4096 chars; keep a safe generic ceiling.
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DEFAULT_MAX_INPUT_CHARS = 4096
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@dataclass(slots=True)
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class TTSConfig:
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"""Resolved text-to-speech configuration for one synthesis call."""
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model: str
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provider_name: str = "openai"
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adapter: str = "openai_compat"
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auth_style: str = AUTH_BEARER
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api_key: str = ""
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base_url: str = ""
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api_version: str | None = None
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extra_headers: dict[str, str] = field(default_factory=dict)
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voice: str = ""
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response_format: str = "mp3"
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speed: float | None = None
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max_input_chars: int = DEFAULT_MAX_INPUT_CHARS
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request_timeout: int = 60
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@dataclass(slots=True)
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class STTConfig:
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"""Resolved speech-to-text configuration for one transcription call."""
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model: str
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provider_name: str = "openai"
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adapter: str = "openai_compat"
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request_style: str = STT_MULTIPART
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auth_style: str = AUTH_BEARER
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api_key: str = ""
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base_url: str = ""
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api_version: str | None = None
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extra_headers: dict[str, str] = field(default_factory=dict)
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language: str | None = None
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request_timeout: int = 120
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__all__ = [
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"AUTH_BEARER",
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"AUTH_API_KEY_HEADER",
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"AUTH_TOKEN",
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"STT_MULTIPART",
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"STT_BASE64_JSON",
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"DEFAULT_MAX_INPUT_CHARS",
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"TTSConfig",
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"STTConfig",
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]
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