WIP: cattura in processo separato + close_stream (NON validata, sospesa)

backend/ambilightd.py

@@ -19,6 +19,7 @@ Config: ~/.config/ambilight/config.json
 """
 import json
 import os
+import sys
 import threading
 import time
 
@@ -193,7 +194,7 @@ def apply_params(zones, cfg):
 
 def capture_loop(state, strip):
     """Ciclo di cattura: sceglie il backend (portal o kmsgrab) e invia i frame."""
-    from ambicapture import Capture, KmsgrabCapture, screencast_stream
+    from ambicapture import ChildCapture, KmsgrabCapture
 
     cap = None
     key = None
@@ -206,10 +207,13 @@ def capture_loop(state, strip):
         if cfg["capture"] == "kmsgrab":
             c = KmsgrabCapture(cfg["leds"], fps=cfg["fps"], device=cfg["drm_device"]).start()
             return c, f"kmsgrab {c.binary} su {cfg['drm_device']}"
-        node, w, h = screencast_stream()
-        c = Capture(node, cfg["leds"], fps=cfg["fps"])
-        c.start()
-        return c, f"portal node={node} sorgente {w}x{h}"
+        helper = os.path.join(os.path.dirname(os.path.abspath(__file__)), "ambicatcher.py")
+        c = ChildCapture([sys.executable, helper,
+                          "--leds", str(cfg["leds"]), "--rows", "72", "--sub", "4",
+                          "--fps", str(int(cfg["fps"])), "--drain"],
+                         cfg["leds"]).start()
+        return c, f"portal (processo separato) node={c.header.get('node')} " \
+                  f"sorgente {c.header.get('w')}x{c.header.get('h')}"
 
     while True:
         cfg = state.snapshot()