's'

web2_host_caps.py

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+"""本机能力探测：GPU 等（供控制台 UI）。"""
+from __future__ import annotations
+
+import platform
+import subprocess
+from typing import Any
+
+
+def detect_nvidia_gpu() -> bool:
+    if platform.system().lower() not in ("windows", "linux"):
+        return False
+    try:
+        _kw: dict = {"capture_output": True, "timeout": 4}
+        if platform.system().lower() == "windows":
+            _kw["creationflags"] = subprocess.CREATE_NO_WINDOW
+        r = subprocess.run(["nvidia-smi"], **_kw)
+        return r.returncode == 0
+    except Exception:
+        return False
+
+
+def detect_nvenc_available() -> bool:
+    if not detect_nvidia_gpu():
+        return False
+    try:
+        _kw = {"capture_output": True, "text": True, "timeout": 8}
+        if platform.system().lower() == "windows":
+            _kw["creationflags"] = subprocess.CREATE_NO_WINDOW
+        r = subprocess.run(["ffmpeg", "-hide_banner", "-encoders"], **_kw)
+        return r.returncode == 0 and "h264_nvenc" in (r.stdout or "")
+    except Exception:
+        return False
+
+
+def gpu_status_payload() -> dict[str, Any]:
+    nv = detect_nvidia_gpu()
+    enc = detect_nvenc_available()
+    return {
+        "nvidia_detected": nv,
+        "nvenc_available": enc,
+    }