tts/dashscope-cosyvoice.ts

TTS adapter for Alibaba DashScope Cosyvoice, sending requests and retrieving voice catalog via UnSpeech.

// Source: https://github.com/moeru-ai/airi | License: MIT | Copyright 2024-PRESENT Neko Ayaka
// Provided via justclaw.it.com; keep this notice with the code.
import type { Voice } from 'unspeech'

import type { TtsAdapter, TtsAdapterContext, TtsInput, TtsResult, TtsVoiceCatalogContext } from './types'

import { createBadRequestError } from '@proj-airi/http-error-shared'

import { audioMimeFromFormat } from './audio-format'
import { listVoicesViaUnSpeech, sendSpeechViaUnSpeech } from './unspeech'

/**
 * Default cosyvoice audio format. Mirrors the OpenAI `mp3` default expected by
 * downstream consumers.
 */
const DEFAULT_COSYVOICE_FORMAT = 'mp3'

/**
 * Default cosyvoice model id. v1 was dropped from the official "REST-supported
 * models" list (the official list now starts at v2 and run

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