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| """Runtime settings, read once from environment variables. | |
| Every limit can be changed without touching code, e.g. in the Space's | |
| "Variables and secrets" page. | |
| """ | |
| from __future__ import annotations | |
| import os | |
| def _int(name: str, default: int) -> int: | |
| try: | |
| return int(os.environ.get(name, default)) | |
| except (TypeError, ValueError): | |
| return default | |
| def _list(name: str, default: list[str]) -> list[str]: | |
| raw = os.environ.get(name, "") | |
| items = [x.strip() for x in raw.replace("\n", ",").split(",") if x.strip()] | |
| return items or list(default) | |
| # --- Gemini ----------------------------------------------------------------- | |
| # Models are tried in order; a 404 / "not available" moves on to the next one. | |
| # GEMINI_MODEL may hold a single name or a comma-separated list. | |
| AUDIO_MODELS = _list( | |
| "GEMINI_MODEL", | |
| ["gemini-3.8-flash", "gemini-flash-latest", "gemini-3.5-flash", "gemini-2.5-flash"], | |
| ) | |
| # Used for the text-only reasoning steps when the user picks "Deep". | |
| DEEP_MODELS = _list( | |
| "GEMINI_DEEP_MODEL", | |
| ["gemini-pro-latest", "gemini-3.1-pro-preview", "gemini-2.5-pro"], | |
| ) | |
| REQUEST_TIMEOUT_S = _int("GEMINI_TIMEOUT_S", 600) | |
| MAX_RETRIES = _int("GEMINI_MAX_RETRIES", 4) | |
| # Files processed at the same time (Gemini calls run in threads). | |
| PARALLEL_FILES = max(1, _int("PARALLEL_FILES", 3)) | |
| # --- Audio ------------------------------------------------------------------ | |
| ANALYSIS_SR = 16_000 # Gemini hears audio at 16 kHz; features use the same rate | |
| CHUNK_TARGET_S = _int("CHUNK_SECONDS", 600) # transcription chunk length (~10 min) | |
| CHUNK_SLACK_S = 60 # cut at the longest pause within +/- this window | |
| OPUS_BITRATE = 32_000 | |
| MAX_FILES = _int("MAX_FILES", 20) | |
| MAX_MINUTES_PER_FILE = _int("MAX_MINUTES_PER_FILE", 180) | |
| MAX_TOTAL_MINUTES = _int("MAX_TOTAL_MINUTES", 600) | |
| MAX_UPLOAD_MB = _int("MAX_UPLOAD_MB", 500) | |
| AUDIO_EXTENSIONS = [ | |
| ".wav", ".mp3", ".m4a", ".aac", ".flac", ".ogg", ".oga", ".opus", ".wma", | |
| ".aif", ".aiff", ".amr", ".webm", ".mp4", ".mov", ".mkv", ".3gp", ".caf", | |
| ] | |
| def api_keys(extra: str | None = None) -> list[str]: | |
| """All configured Gemini keys, de-duplicated, user-supplied key first. | |
| Sources: the optional key typed in the UI, GEMINI_API_KEYS (comma or | |
| newline separated, for rotating between several keys when one hits its | |
| quota), GEMINI_API_KEY and GOOGLE_API_KEY. | |
| """ | |
| keys: list[str] = [] | |
| candidates = [extra or ""] | |
| candidates += os.environ.get("GEMINI_API_KEYS", "").replace("\n", ",").split(",") | |
| candidates += [os.environ.get("GEMINI_API_KEY", ""), os.environ.get("GOOGLE_API_KEY", "")] | |
| for k in candidates: | |
| k = k.strip().strip('"').strip("'") | |
| if k and k not in keys: | |
| keys.append(k) | |
| return keys | |