feat(tts): echtes lokales TTS via piper (kein Stub mehr)
PiperTTSProvider ruft das piper-Binary (--output-raw) async auf, liest die native Sample-Rate aus der .onnx.json und resampelt per ffmpeg auf 24000 Hz (Gateway-Norm). Nicht passende Stimmen (z. B. Cloud-Stimme 'Zephyr' aus der Route) fallen auf die konfigurierte Default-Stimme zurueck. Damit ist eine voll-lokale Konstellation (faster-whisper + Ollama + piper) moeglich -> keine API-Kosten, max. Datenschutz. - config: PIPER_BIN/PIPER_VOICES_DIR/PIPER_VOICE/TTS_SAMPLE_RATE (+ .env.example) - dependencies: piper-Factory mit Settings verdrahtet - tests: tests/test_piper_tts.py (offline, Fake-Binary; Resample-Test skippt ohne ffmpeg); e2e/auth-Tests nutzen jetzt einen Stub-TTS statt 'piper' als Pseudo-Stub - docs: README, BEDIENUNGSANLEITUNG (voll-lokal-Beispiel), Architektur-Roadmap Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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10 changed files with 269 additions and 15 deletions
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@ -9,15 +9,25 @@ from tests.conftest import loopback_output
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client = TestClient(app)
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def test_speak_loopback_collects_chunks():
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# piper-Stub liefert b"" -> kein Netzcall; Loopback sammelt den Chunk.
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def _stub_tts(monkeypatch, name="stub-tts", audio=b""):
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"""Registriert einen deterministischen TTS-Stub (kein Netz, kein lokales Binary)."""
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class StubTTS:
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async def synthesize(self, text, voice=None, audio_format="pcm"):
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return audio
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monkeypatch.setitem(deps.TTS_REGISTRY, name, lambda s: StubTTS())
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return name
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def test_speak_loopback_collects_chunks(monkeypatch):
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# Stub-TTS liefert b"" -> kein Netzcall; Loopback sammelt den Chunk.
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tts = _stub_tts(monkeypatch)
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resp = client.post(
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"/api/speak",
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json={"text": "Hallo Welt", "tts_provider": "piper", "output_endpoint": "loopback"},
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json={"text": "Hallo Welt", "tts_provider": tts, "output_endpoint": "loopback"},
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)
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assert resp.status_code == 200
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assert resp.headers["X-Output-Endpoint"] == "loopback"
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assert resp.headers["X-TTS-Provider"] == "piper"
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assert resp.headers["X-TTS-Provider"] == tts
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assert len(loopback_output().chunks) == 1
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@ -35,15 +45,16 @@ def test_unknown_provider_returns_422():
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assert resp.status_code == 422
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def test_session_route_applies():
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def test_session_route_applies(monkeypatch):
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tts = _stub_tts(monkeypatch)
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client.post(
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"/api/sessions/s1/route",
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json={"tts_provider": "piper", "output_endpoint": "loopback"},
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json={"tts_provider": tts, "output_endpoint": "loopback"},
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)
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resp = client.post("/api/speak?session_id=s1", json={"text": "hallo"})
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assert resp.status_code == 200
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assert resp.headers["X-Output-Endpoint"] == "loopback"
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assert resp.headers["X-TTS-Provider"] == "piper"
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assert resp.headers["X-TTS-Provider"] == tts
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def test_chat_per_request_override_and_loopback(monkeypatch):
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