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Fancall Backend

AI 아이돌과 실시간 영상 통화 Python 패키지

주요 기능

  • LiveKit 기반 실시간 음성/영상 통화
  • ElevenLabs TTS 음성 합성
  • Simli 실시간 립싱크 아바타 (선택)
  • 동적 설정 (voice_id, avatar_id, system_prompt)

Fish Audio에서 옮겨오는 호스트 앱: voice_id는 이제 ElevenLabs voice ID입니다. 기존 Fish Audio voice_id를 그대로 넘기면 ElevenLabs에서 찾지 못해 음성 합성이 실패하므로, ElevenLabs voice ID로 바꾸거나 voice_id를 비워 기본 목소리를 쓰세요. create_worker_options()의 fish_settings 인자는 elevenlabs_settings로 바뀌었습니다.

설치

cd backend
poetry install
poetry run uvicorn main:app --reload

API 문서:

  • Swagger UI: http://localhost:8000/docs
  • ReDoc: http://localhost:8000/redoc

LiveKit 설정

서버

brew install livekit
livekit-server --dev

서버: ws://localhost:7880 (API Key: devkey, Secret: secret)

Agent

cd backend
export OPENAI_API_KEY=sk-...
export ELEVEN_API_KEY=...

# 개발 모드
python -m fancall.agent.worker dev

# 프로덕션 모드
python -m fancall.agent.worker start

# 특정 룸 연결
python -m fancall.agent.worker connect --room <room-name>

사용법

FastAPI 통합

from fancall.api.router import create_fancall_router
from fancall.factories import LiveRoomRepositoryFactory
from fancall.settings import LiveKitSettings

router = create_fancall_router(
    livekit_settings=LiveKitSettings(),
    jwt_settings=jwt_settings,
    db_session_factory=db_session_factory,
    repository_factory=LiveRoomRepositoryFactory(db_session_factory),
)
app.include_router(router, prefix="/api")

개발

poetry install
make lint
make type-check
make unit-test
make format

데이터베이스 마이그레이션

데이터베이스 스키마를 최신 상태로 업데이트하려면:

make migrate

새로운 마이그레이션을 생성하려면 (models.py 변경 후):

poetry run alembic revision --autogenerate -m "변경 설명"

환경 변수

필수 (Agent 실행 시)

변수 설명
OPENAI_API_KEY OpenAI API 키
ELEVEN_API_KEY ElevenLabs TTS API 키

선택 (기능 활성화)

변수 기본값 설명
FANCALL_OPENAI_MODEL gpt-4o-mini 사용할 OpenAI LLM 모델
FANCALL_ELEVENLABS_MODEL eleven_flash_v2_5 사용할 ElevenLabs TTS 모델
SIMLI_API_KEY - Simli 아바타 API 키. avatar_id(Simli face ID)가 있는 페르소나에 사용
CORS_ALLOWED_ORIGINS http://localhost:3000 쿠키를 실은 요청을 허용할 프런트 origin (쉼표로 구분). 운영에서는 실제 도메인으로 설정

키가 없거나 avatar_id가 없거나 시작에 실패하면 음성 통화로 진행되고, 프런트는 프로필 사진을 보여줍니다. 아바타는 LiveKit 방에 별도 참가자로 접속하므로 LIVEKIT_URL이 외부에서 접근 가능해야 합니다 (로컬 ws://localhost 불가).

Hedra에서 옮겨오는 호스트 앱: Hedra 실시간 아바타는 서비스가 종료되었습니다. create_worker_options()의 hedra_settings 인자는 simli_settings(SimliSettings)로 바뀌었고 HEDRA_ENABLED/HEDRA_API_KEY는 더 이상 읽지 않습니다. avatar_id는 이제 Simli face ID입니다.

참고: LiveKit, 데이터베이스, 모델 등 추가 설정은 기본값으로 로컬 개발 가능합니다. 변경이 필요한 경우 fancall/settings.py의 Settings 클래스를 참고하세요.

의존성

  • aioia-core (공통 인프라)
  • FastAPI, SQLAlchemy, Pydantic
  • livekit-api, livekit-agents

라이선스

Apache 2.0

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