new: new ui.display.video.on_frame configuration to use fbi on framebuffer based screens

pwnagotchi/defaults.yml

@@ -204,6 +204,10 @@ ui:
             address: '0.0.0.0'
             origin: '*'
             port: 8080
+            # command to be executed when a new png frame is available
+            # for instance, to use with framebuffer based displays:
+            # on_frame: 'fbi -a -d /dev/fb1 -T 1 /root/pwnagotchi.png'
+            on_frame: ''
 
 
 # bettercap rest api configuration

pwnagotchi/ui/display.py

@@ -1,3 +1,4 @@
+import os
 import logging
 import pwnagotchi.plugins as plugins
 
@@ -60,6 +61,12 @@ class Display(View):
 
     def _on_view_rendered(self, img):
         web.update_frame(img)
+        try:
+            if self._config['ui']['display']['video']['on_frame'] != '':
+                os.system(self._config['ui']['display']['video']['on_frame'])
+        except Exception as e:
+            logging.error("%s" % e)
+
         if self._enabled:
             self._canvas = (img if self._rotation == 0 else img.rotate(self._rotation))
             if self._implementation is not None: