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https://gitee.com/wanwujie/deer-flow
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132 lines
4.0 KiB
Python
132 lines
4.0 KiB
Python
# Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
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# SPDX-License-Identifier: MIT
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"""
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Text-to-Speech module using volcengine TTS API.
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"""
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import json
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import uuid
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import logging
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import requests
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from typing import Optional, Dict, Any
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logger = logging.getLogger(__name__)
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class VolcengineTTS:
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"""
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Client for volcengine Text-to-Speech API.
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"""
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def __init__(
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self,
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appid: str,
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access_token: str,
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cluster: str = "volcano_tts",
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voice_type: str = "BV700_V2_streaming",
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host: str = "openspeech.bytedance.com",
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):
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"""
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Initialize the volcengine TTS client.
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Args:
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appid: Platform application ID
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access_token: Access token for authentication
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cluster: TTS cluster name
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voice_type: Voice type to use
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host: API host
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"""
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self.appid = appid
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self.access_token = access_token
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self.cluster = cluster
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self.voice_type = voice_type
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self.host = host
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self.api_url = f"https://{host}/api/v1/tts"
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self.header = {"Authorization": f"Bearer;{access_token}"}
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def text_to_speech(
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self,
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text: str,
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encoding: str = "mp3",
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speed_ratio: float = 1.0,
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volume_ratio: float = 1.0,
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pitch_ratio: float = 1.0,
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text_type: str = "plain",
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with_frontend: int = 1,
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frontend_type: str = "unitTson",
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uid: Optional[str] = None,
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) -> Dict[str, Any]:
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"""
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Convert text to speech using volcengine TTS API.
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Args:
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text: Text to convert to speech
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encoding: Audio encoding format
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speed_ratio: Speech speed ratio
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volume_ratio: Speech volume ratio
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pitch_ratio: Speech pitch ratio
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text_type: Text type (plain or ssml)
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with_frontend: Whether to use frontend processing
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frontend_type: Frontend type
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uid: User ID (generated if not provided)
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Returns:
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Dictionary containing the API response and base64-encoded audio data
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"""
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if not uid:
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uid = str(uuid.uuid4())
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request_json = {
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"app": {
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"appid": self.appid,
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"token": self.access_token,
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"cluster": self.cluster,
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},
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"user": {"uid": uid},
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"audio": {
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"voice_type": self.voice_type,
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"encoding": encoding,
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"speed_ratio": speed_ratio,
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"volume_ratio": volume_ratio,
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"pitch_ratio": pitch_ratio,
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},
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"request": {
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"reqid": str(uuid.uuid4()),
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"text": text,
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"text_type": text_type,
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"operation": "query",
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"with_frontend": with_frontend,
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"frontend_type": frontend_type,
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},
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}
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try:
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logger.debug(f"Sending TTS request for text: {text[:50]}...")
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response = requests.post(
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self.api_url, json.dumps(request_json), headers=self.header
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)
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response_json = response.json()
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if response.status_code != 200:
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logger.error(f"TTS API error: {response_json}")
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return {"success": False, "error": response_json, "audio_data": None}
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if "data" not in response_json:
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logger.error(f"TTS API returned no data: {response_json}")
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return {
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"success": False,
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"error": "No audio data returned",
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"audio_data": None,
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}
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return {
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"success": True,
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"response": response_json,
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"audio_data": response_json["data"], # Base64 encoded audio data
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}
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except Exception as e:
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logger.exception(f"Error in TTS API call: {str(e)}")
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return {"success": False, "error": str(e), "audio_data": None}
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