root
736eccb932
Working snapshot before the OpenVINO MetricGAN GPU spike: thread-capped SpeechBrain DelaySum+MetricGAN on CPU, hop 200 ms, video hold for A/V sync, Arc VAAPI H.264, headless kmssink wall. 32 tests passing. Do not treat this as a GPU audio path.
157 lines
6.4 KiB
Python
157 lines
6.4 KiB
Python
"""Load configuration from environment / .env file."""
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import os
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from dataclasses import dataclass, field
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from pathlib import Path
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from typing import Optional
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def _load_dotenv(path: Path) -> None:
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if not path.is_file():
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return
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for line in path.read_text().splitlines():
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line = line.strip()
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if not line or line.startswith("#") or "=" not in line:
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continue
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key, _, value = line.partition("=")
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os.environ.setdefault(key.strip(), value.strip())
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@dataclass
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class Config:
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# connection
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url: str = ""
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api_key: str = ""
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api_secret: str = ""
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room: str = "cameras"
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participant_prefix: str = "cam"
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# video
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width: int = 640
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height: int = 360
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fps: int = 30
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min_fps: int = 5
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video_bitrate: int = 800_000
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video_codec: str = "h264"
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video_encoder: str = "vaapi" # auto|software|hardware|nvenc|vaapi
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vaapi_device: str = "/dev/dri/renderD129"
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# audio
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audio_rate: int = 16000
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audio_channels: int = 1
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# speechbrain cleanup
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enhance_mode: str = "auto" # auto | force | off
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enhance_model: str = "speechbrain/metricgan-plus-voicebank"
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enhance_chunk_s: float = 1.0
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enhance_hop_s: float = 0.2
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# SpeechBrain Delay-and-Sum (GCC-PHAT) on C920 stereo before enhance
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beamform_mode: str = "auto" # auto | force | off
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torch_num_threads: int = 1
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beamform_tdoa_every: int = 5
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# misc
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publish_timeout_s: float = 60.0
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log_level: str = "INFO"
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cameras: list[str] = field(default_factory=lambda: ["all"])
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# headless displays (LiveKit subscribe -> GStreamer kmssink)
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display_count: int = 3
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display_identities: list[str] = field(
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default_factory=lambda: ["cam-01", "cam-02", "cam-03"])
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display_connectors: list[str] = field(default_factory=list)
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display_identity: str = "display-wall"
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display_roles: list[str] = field(
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default_factory=lambda: ["grid", "speaker", "screenshare"])
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display_speaker_camera: str = "cam-01" # cam-NN or "active"
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display_speaker_participant: str = "speaker"
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display_grid_cols: int = 5
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display_grid_rows: int = 4
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display_grid_width: int = 1920
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display_grid_height: int = 1080
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display_grid_fps: int = 30
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livekit_public_url: str = ""
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def _parse_cameras(spec: str) -> list[str]:
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"""Expand 'all' / '1,3,5' / '0-19' into a list of indices ('' = all)."""
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spec = (spec or "all").strip().lower()
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if spec in ("all", ""):
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return ["all"]
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out = []
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for part in spec.split(","):
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part = part.strip()
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if not part:
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continue
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if "-" in part:
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lo, hi = part.split("-", 1)
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out.extend(str(i) for i in range(int(lo), int(hi) + 1))
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else:
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out.append(part)
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return out
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def _parse_list(spec: str) -> list[str]:
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"""Comma-separated names, preserving case (HDMI-A-7, cam-01)."""
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spec = (spec or "").strip()
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if not spec:
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return []
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return [p.strip() for p in spec.split(",") if p.strip()]
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def load_config(env_path: Optional[Path] = None) -> Config:
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_load_dotenv(Path(env_path or Path(__file__).parent / ".env"))
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cfg = Config(
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url=os.environ.get("LIVEKIT_URL", ""),
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api_key=os.environ.get("LIVEKIT_API_KEY", ""),
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api_secret=os.environ.get("LIVEKIT_API_SECRET", ""),
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room=os.environ.get("LIVEKIT_ROOM", "cameras"),
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participant_prefix=os.environ.get("PARTICIPANT_PREFIX", "cam"),
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width=int(os.environ.get("VIDEO_WIDTH", "640")),
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height=int(os.environ.get("VIDEO_HEIGHT", "360")),
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fps=int(os.environ.get("VIDEO_FPS", "30")),
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min_fps=int(os.environ.get("VIDEO_MIN_FPS", "5")),
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video_bitrate=int(os.environ.get("VIDEO_BITRATE", "800000")),
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video_codec=os.environ.get("VIDEO_CODEC", "h264").lower(),
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video_encoder=os.environ.get("VIDEO_ENCODER", "vaapi").lower(),
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vaapi_device=os.environ.get("LIBVA_DRM_DEVICE", "/dev/dri/renderD129"),
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audio_rate=int(os.environ.get("AUDIO_SAMPLE_RATE", "16000")),
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audio_channels=int(os.environ.get("AUDIO_CHANNELS", "1")),
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enhance_mode=os.environ.get("ENHANCE_MODE", "auto").lower(),
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enhance_model=os.environ.get(
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"ENHANCE_MODEL", "speechbrain/metricgan-plus-voicebank"
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),
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enhance_chunk_s=float(os.environ.get("ENHANCE_CHUNK_S", "1.0")),
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enhance_hop_s=float(os.environ.get("ENHANCE_HOP_S", "0.2")),
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beamform_mode=os.environ.get("BEAMFORM_MODE", "auto").lower(),
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torch_num_threads=int(os.environ.get("TORCH_NUM_THREADS", "1")),
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beamform_tdoa_every=int(os.environ.get("BEAMFORM_TDOA_EVERY", "5")),
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publish_timeout_s=float(os.environ.get("PUBLISH_TIMEOUT_S", "60")),
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log_level=os.environ.get("LOG_LEVEL", "INFO").upper(),
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cameras=_parse_cameras(os.environ.get("CAMERAS", "all")),
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display_count=int(os.environ.get("DISPLAY_COUNT", "3")),
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display_identities=_parse_list(
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os.environ.get("DISPLAY_IDENTITIES", "cam-01,cam-02,cam-03")),
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display_connectors=_parse_list(os.environ.get("DISPLAY_CONNECTORS", "")),
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display_identity=os.environ.get("DISPLAY_IDENTITY", "display-wall"),
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display_roles=_parse_list(
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os.environ.get("DISPLAY_ROLES", "grid,speaker,screenshare"))
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or ["grid", "speaker", "screenshare"],
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display_speaker_camera=os.environ.get("DISPLAY_SPEAKER_CAMERA", "cam-01"),
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display_speaker_participant=os.environ.get(
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"DISPLAY_SPEAKER_PARTICIPANT", "speaker"),
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display_grid_cols=int(os.environ.get("DISPLAY_GRID_COLS", "5")),
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display_grid_rows=int(os.environ.get("DISPLAY_GRID_ROWS", "4")),
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display_grid_width=int(os.environ.get("DISPLAY_GRID_WIDTH", "1920")),
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display_grid_height=int(os.environ.get("DISPLAY_GRID_HEIGHT", "1080")),
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display_grid_fps=int(os.environ.get("DISPLAY_GRID_FPS", "30")),
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livekit_public_url=os.environ.get("LIVEKIT_PUBLIC_URL", ""),
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)
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if cfg.enhance_mode not in ("auto", "force", "off"):
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raise ValueError(f"ENHANCE_MODE must be auto|force|off, got {cfg.enhance_mode}")
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if cfg.beamform_mode not in ("auto", "force", "off"):
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raise ValueError(
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f"BEAMFORM_MODE must be auto|force|off, got {cfg.beamform_mode}")
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if cfg.torch_num_threads < 1:
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raise ValueError("TORCH_NUM_THREADS must be >= 1")
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if cfg.beamform_tdoa_every < 1:
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raise ValueError("BEAMFORM_TDOA_EVERY must be >= 1")
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return cfg
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